A spray arm and a dishwasher

Abstract

The present application relates to the kitchen electrical technology field, especially a kind of spray arm and dish-washing machine.The spray arm provided by the present application includes spray head, spray arm body and driving device, the spray head can spray water flow, the spray head is movably connected with the spray arm body, the driving device changes the spray direction of water flow by adjusting the posture of spray head, realizes the automatic adjustment of the spray direction of spray head, covers larger cleaning area, and improves cleaning effect.The dish-washing machine provided by the present application has good cleaning effect.

Description

TECHNICAL FIELD

[0001] The present application relates to the kitchen electrical technology field, and particularly relates to a spray arm and a dishwasher. BACKGROUND

[0002] The dishwasher is an equipment for automatically cleaning bowls, chopsticks, plates, dishes, knives and forks, and is widely used in restaurants, hotels, families and other places where various tableware is needed. With the improvement of living standards, dishwashers begin to enter home life, and various styles of dishwashers emerge as the times require to improve the practicality and convenience of dishwashers.

[0003] In the prior art, the spray arm is generally rotated to spray and clean tableware. The spray arm comprises a spray arm body and a plurality of spray heads. The spray arm body is usually fixed with the spray heads, and the spraying direction of the spray heads is also fixed. The coverage area of the spray heads with a single spraying direction is limited, and there is a cleaning dead angle.

[0004] Therefore, it is urgent to design a new spray arm and dishwasher to improve the above problems. SUMMARY

[0005] An object of the present application is to provide a spray arm. A driving device adjusts the posture of a spray head to change the spraying direction of a water flow, realizes automatic adjustment of the spraying direction of the spray head, covers a larger cleaning area, and improves the cleaning effect.

[0006] To achieve this object, the present application adopts the following technical solutions:

[0007] A spray arm comprises:

[0008] a spray head capable of spraying a water flow;

[0009] a spray arm body, the spray head being movably connected with the spray arm body; and

[0010] a driving device configured to adjust the posture of the spray head to change the spraying direction of the water flow.

[0011] As a preferred solution, the driving device is configured to adjust the posture of the spray head according to the temperature of the water flow in the spray arm body.

[0012] As a preferred solution, the spray head is rotatably connected with the spray arm body, and the driving device is configured to drive the spray head to rotate relative to the spray arm body.

[0013] As a preferred solution, the driving device comprises a mounting member and a temperature-sensitive deformation member. The mounting member is arranged on the spray arm body and located at one side of the spray head. One end of the temperature-sensitive deformation member is fixed with the mounting member, the other end of the temperature-sensitive deformation member is movably connected with the spray head, and the temperature-sensitive deformation member is in contact with the spray arm body.

[0014] The driving device comprises a driving assembly and a temperature detecting mechanism configured to detect the temperature of the water flow in the spray arm body, and the driving assembly adjusts the posture of the spray head according to the temperature detected by the temperature detecting mechanism.

[0015] As a preferred solution, the temperature-sensitive deforming member comprises a first limiting part, a limiting slot is formed on the spray head, and the first limiting part is arranged in the limiting slot and movable in the limiting slot.

[0016] As a preferred solution, the limiting slot is provided in at least two, and the at least two limiting slots are arranged at intervals along the circumference of the spray head; and / or

[0017] The limiting slot is formed by inwardly recessing the outer circumferential surface of the spray head.

[0018] As a preferred solution, the temperature-sensitive deforming member is detachably connected with the mounting member; and / or

[0019] The temperature-sensitive deforming member is in the shape of a rod, and the length of the temperature-sensitive deforming member is adjustable.

[0020] As a preferred solution, the driving assembly comprises:

[0021] a linear output driving mechanism arranged on the spray arm body, and a rack, the outer circumference of the spray head is provided with an engaging tooth, and the engaging tooth is engaged with the rack; or

[0022] a rotary output driving mechanism and a gear, the gear is fixed on the output end of the rotary output driving mechanism, the outer circumference of the spray head is provided with an engaging tooth, and the engaging tooth is engaged with the gear; or

[0023] a linear output driving mechanism, a connecting rod, and a sliding block, a sliding slot is formed on the spray arm body, one end of the connecting rod is pivotally connected with the spray head, the other end of the connecting rod is pivotally connected with the sliding block, the sliding block is inserted into the sliding slot and movable along the sliding slot, and the output end of the linear output driving mechanism is connected with the sliding block; or

[0024] a linear driving mechanism and a driven member, the outer circumference of the spray head is in the shape of a cam, the linear driving mechanism can drive the driven member to move in a linear direction, and the free end of the driven member abuts against the outer circumference of the spray head; or

[0025] The rotation output driving mechanism and the transmission assembly, the transmission assembly comprises a first transmission wheel, a second transmission wheel and a ring-shaped transmission belt, the first transmission wheel is pivotally connected with the spray arm body and arranged at one side of the spray head, the second transmission wheel is sleeved on the outer periphery of the spray head, and the ring-shaped transmission belt is sleeved on the outer periphery of the first transmission wheel and the second transmission wheel and is tensioned by the first transmission wheel and the second transmission wheel.

[0026] As a preferred solution, the spray head is spherically hinged with the spray arm body, and the driving device comprises a linear driving mechanism, one of the body and the output rod of the linear driving mechanism is pivotally connected with the spray arm body, and the other is pivotally connected with the spray head.

[0027] As a preferred solution, a spray arm cavity is formed in the spray arm body, and the driving device is arranged in the spray arm cavity or outside the spray arm cavity.

[0028] As a preferred solution, the spray arm body has a wall surface, the spray head is arranged on the wall surface, and the axis of the water outlet through hole is arranged at an angle with the wall surface.

[0029] As a preferred solution, the spray arm body comprises a first spray arm body and a second spray arm body, the first spray arm body is provided with a first spray head, and the second spray arm body is provided with a second spray head.

[0030] When the first spray head is arranged at an angle with the extension line of the first spray arm body when the projection of the first spray arm body is parallel or collinear with the extension line of the first spray arm body, and / or

[0031] When the second spray head is arranged at an angle with the extension line of the second spray arm body when the projection of the second spray arm body is parallel or collinear with the extension line of the second spray arm body.

[0032] As a preferred solution, the spray head is an elastic member, and the aperture size of the water outlet through hole changes with the change of the water flow pressure in the spray arm cavity; and / or

[0033] When the spray arm cavity is not connected with the water flow, the cross-sectional area of the water outlet through hole gradually decreases along the flow direction of the water flow; and / or

[0034] The water outlet through hole comprises a flow guide section and a straight section connected in sequence along the flow direction of the water flow, and the flow guide section is a circular arc transition surface; and / or

[0035] The side wall of the water outlet through hole is provided with an air inlet through hole, the air inlet through hole has a first end and a second end, the first end is communicated with the water outlet through hole, the angle between the axis of the water outlet through hole and the axis of the air inlet through hole is an included angle, and the second end is arranged close to the inlet of the water outlet through hole relative to the first end.

[0036] As a preferred solution, the spray arm body comprises a first connecting member, and the spray head comprises a second connecting member, the first connecting member being detachably connected with the second connecting member.

[0037] Another object of the present application is to provide a dishwasher with good cleaning effect.

[0038] To achieve the above object, the present application adopts the following technical solution:

[0039] A dishwasher comprises the spray arm as described above.

[0040] The present application has the following advantages:

[0041] The spray arm provided by the present application comprises a spray head, a spray arm body and a driving device, the spray head can spray water flow, the spray head is movably connected with the spray arm body, and the driving device adjusts the posture of the spray head to change the spraying direction of the water flow, so that the spraying direction of the spray head is automatically adjusted, a larger cleaning area is covered, and the cleaning effect is improved.

[0042] The driving device comprises a mounting member and a temperature-sensitive deformation member, the mounting member is arranged on the spray arm body and located at one side of the spray head, one end of the temperature-sensitive deformation member is fixed with the mounting member, the other end of the temperature-sensitive deformation member is movably connected with the spray head, and the temperature-sensitive deformation member is attached to the spray arm body. Due to the physical properties of the temperature-sensitive deformation member, the temperature-sensitive deformation member can deform with temperature change, so that the driving device of the present embodiment does not need to additionally add temperature detection components, and only needs the temperature-sensitive deformation member with simple structure to drive the spray head. In addition, the driving device outputs the deformation caused by the temperature change itself, and the driving device does not need to additionally add electric components, on the one hand, energy can be saved, and on the other hand, the influence of water and cleaning liquid in the use environment of the spray arm on the components can be avoided, the short circuit problem of the components can be avoided, the damage of the dishwasher can be avoided, and the use safety of the user can be ensured.

[0043] The temperature-sensitive deformation member comprises a first limiting part, a limiting groove is arranged on the spray head, and the first limiting part is arranged in the limiting groove and can move in the limiting groove. Since the temperature-sensitive deformation member is limited by the limiting groove, when the spray head is assembled, the temperature-sensitive deformation member will not be detached from the spray head.

[0044] The initial spraying directions of the first nozzle and the second nozzle are different, the first nozzle is arranged at an angle with the extension line of the first nozzle body when the projection of the first nozzle body is parallel to the extension line of the first nozzle body, the second nozzle is arranged at an angle with the extension line of the second nozzle body when the projection of the second nozzle body is parallel to the extension line of the second nozzle body, at this time, the second nozzle provides the rotating driving force of the spray arm, and the rotating direction of the spray arm is the O direction.

[0045] The temperature sensing deformation member is rod-shaped, the length of the temperature sensing deformation member is adjustable, the spray head rotating angle controlled by the temperature sensing deformation member with a larger deformation degree is larger, different lengths of the temperature sensing deformation member can be matched according to actual needs, the force value of the spray head driving the spray arm to rotate is different, and the overall rotating speed of the spray arm also has a difference.

[0046] The dishwasher provided by the application has good cleaning effect. BRIEF DESCRIPTION OF DRAWINGS

[0047] Figure 1 FIG. 1 is a structural schematic diagram of a dishwasher provided by an embodiment of the application;

[0048] Figure 2 FIG. 2 is a structural schematic diagram of a spray arm provided by the dishwasher of the embodiment of the application; Figure 1 FIG. 3 is an enlarged view of a part C in FIG. 2;

[0049] Figure 3 FIG. 4 is a structural schematic diagram of a spray head provided by the dishwasher of the embodiment of the application; Figure 1 ;

[0050] Figure 4 FIG. 5 is a structural schematic diagram of a spray head provided by the dishwasher of the embodiment of the application; Figure 2 ;

[0051] Figure 5 FIG. 6 is a structural schematic diagram of a driving device provided by the dishwasher of the embodiment of the application;

[0052] Figure 6 FIG. 7 is a structural schematic diagram of the driving device and the spray head in a high-temperature water flow provided by the dishwasher of the embodiment of the application;

[0053] Figure 7 FIG. 8 is a structural schematic diagram of the driving device and the spray head in a low-temperature water flow provided by the dishwasher of the embodiment of the application;

[0054] Figure 8 is the cross-sectional view of the first nozzle in low pressure water flow provided by the embodiment one of the present application;

[0055] Figure 9 is the cross-sectional view of the first nozzle in high pressure water flow provided by the embodiment one of the present application;

[0056] Figure 10 is the cross-sectional view of the second nozzle provided by the embodiment one of the present application;

[0057] Figure 11 is the cross-sectional view of the third nozzle provided by the embodiment one of the present application;

[0058] Figure 12 is the cross-sectional view of the fourth nozzle provided by the embodiment one of the present application;

[0059] Figure 13 is the cross-sectional view of the fifth nozzle provided by the embodiment one of the present application;

[0060] Figure 14 is the structural schematic view of the driving device and the nozzle in the first state provided by the embodiment two of the present application;

[0061] Figure 15 is the structural schematic view of the driving device and the nozzle in the second state provided by the embodiment two of the present application;

[0062] Figure 16 is the structural schematic view of the driving device and the nozzle in the third state provided by the embodiment two of the present application;

[0063] Figure 17 is the structural schematic view of the driving device and the nozzle provided by the embodiment three of the present application;

[0064] Figure 18 is the structural schematic view of the driving device and the nozzle provided by the embodiment four of the present application;

[0065] Figure 19 is the structural schematic view of the driving device and the nozzle provided by the embodiment five of the present application;

[0066] Figure 20 is the structural schematic view of the driving device and the nozzle provided by the embodiment six of the present application;

[0067] Figure 21 is the structural schematic view of the driving device and the nozzle provided by the embodiment seven of the present application;

[0068] Figure 22 is the cross-sectional view of the driving device and the nozzle provided by the embodiment eight of the present application;

[0069] Figure 23is a structural schematic view of a spray arm in a first state provided by embodiment nine of the present application;

[0070] Figure 24 is a structural schematic view of a spray arm in a second state provided by embodiment nine of the present application;

[0071] Figure 25 is a structural schematic view of a driving device and a spray head provided by embodiment nine of the present application;

[0072] Figure 26 is a structural schematic view of another driving device and a spray head provided by embodiment nine of the present application;

[0073] Figure 27 is a sectional view of a spray head provided by embodiment ten of the present application.

[0074] in the figure:

[0075] 100, a dishwasher;

[0076] 10, a spray arm; 1, a spray arm body; 1a, a first spray arm body; 1b, a second spray arm body; 11, a spray arm cavity; 12, a wall surface; 121, a first connecting piece; 122, an opening; 13, a first limiting piece; 14, a sliding groove; 2, a spray head; 2a, a first spray head; 2b, a second spray head; 21, a water outlet through hole; 211, a flow guiding section; 212, a straight section; 22, a second connecting piece; 221, a second limiting part; 2212, a limiting groove; 222, a main body part; 2221, an air inlet through hole; 22212, a first end; 22211, a second end; 2222, a branch air inlet through hole; 2223, a branch air outlet through hole; 223, a third limiting part; 2231, a cantilever part; 2232, a clamping part; 22321, a triggering surface; 25, an engaging tooth; 3, a buckle; 4, a spray arm shaft; 7, a third spray head; 8, a fourth spray head; 81, a fourth water outlet through hole; 83, a second limiting piece; 9, a driving device; 91, a mounting piece; 911, a mounting groove; 92, a temperature-sensing deforming piece; 921, a first limiting part; 93, a driving assembly; 931, a linear output driving mechanism; 932, a rack; 933, a rotary output driving mechanism; 934, a gear; 935, a connecting rod; 936, a sliding block; 937, a linear driving mechanism; 938, a driven piece; 939, a transmission assembly; 9391, a first transmission wheel; 9392, a second transmission wheel; 9393, an annular transmission belt;

[0077] 20, a bowl basket; 210, a bowl basket frame; 220, a roller; 30, a spray arm water pipe; 40, a water inlet pipe; 60, a clamping piece; 80, a guide rail; 90, a machine body; 910, a containing cavity. DETAILED DESCRIPTION

[0078] The technical solutions of the present application will be further described below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, but not to limit the present application. In addition, it should be noted that, for the convenience of description, only the parts related to the present application are shown in the drawings, but not all.

[0079] In the description of the present application, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or detachably connected, or integrated; it can be mechanically connected, or electrically connected; it can be directly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0080] In the present application, unless otherwise explicitly specified and limited, the first feature "on" or "under" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "under", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0081] In the description of the present embodiment, the terms "up", "down", "left", "right", and other orientation or position relationships are based on the orientation or position relationship shown in the drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only used to distinguish in description, and have no special meaning.

[0082] Embodiment one

[0083] As Figure 1 and Figure 2As shown, the embodiment of the present application provides a dishwasher 100, which comprises a body 90, a basket 20, a spray arm water pipe 30, a spray arm 10 and a water inlet pipe 40. The body 90 is provided with a receiving cavity 910, the basket 20 is arranged in the receiving cavity 910 and used for carrying dishes to be cleaned (not shown in the figure), the water inlet pipe 40 is fixed on the inner wall of the receiving cavity 910, a water source (not shown in the figure), the water inlet pipe 40, the spray arm water pipe 30 and the spray arm 10 are sequentially connected, and the water flow provided by the water source is sequentially passed through the water inlet pipe 40, the spray arm water pipe 30 and the spray arm 10 and then sprayed from the spray arm 10. The sprayed water flow is used for cleaning the dishes to be cleaned in the basket 20 below the basket 20.

[0084] As shown in the figure, Figures 1-2 The dishwasher 100 further comprises a clamping piece 60, which is fixedly connected with the spray arm water pipe 30 and clamped with the basket 20, so as to realize clamping of the spray arm water pipe 30 on the basket 20, and the basket 20 can stably carry the spray arm water pipe 30. Of course, the clamping piece 60 can also be replaced by other fixing pieces capable of fixing the spray arm water pipe 30 on the basket 20, and the fixing piece can be selected from screws, pins and the like, and the embodiment is not limited in particular.

[0085] As shown in the figure, Figures 1-2 The dishwasher 100 further comprises a guide rail 80 arranged on the inner wall of the receiving cavity 910, which extends along the pulling direction of the basket 20. The basket 20 comprises a basket frame 210 and a roller 220 pivotally connected with the basket frame 210, and the roller 220 can move along the guide rail 80. The guide rail 80 can realize better guiding effect on the roller 220, so as to ensure that the basket 20 can be better pulled in the predetermined direction and avoid deflection of the basket 20 during pulling.

[0086] As shown in the figure, Figures 1-2 Since the spray arm water pipe 30 and the basket 20 move together, when the basket 20 is at least partially pulled out of the body 90, the free end of the spray arm water pipe 30 and the free end of the water inlet pipe 40 are separated from each other. When the basket 20 is completely pushed into the body 90, the free end of the spray arm water pipe 30 and the free end of the water inlet pipe 40 are inserted with each other, so as to realize the function that the water flow in the water inlet pipe 40 enters the spray arm water pipe 30 and the spray arm 10.

[0087] As shown in the figure, Figure 2 , Figure 3 and Figure 4As shown in

[0088] As shown in Figure 2 , Figure 3 and Figure 4 , the spray arm body 1 comprises a wall surface 12 and has a spray arm cavity 11, the wall surface 12 is provided with the spray head 2, the third spray head 7 and the fourth spray head 8, the spray head 2 is provided with a water outlet through hole 21 which is in communication with the spray arm cavity 11, the third spray head 7 is provided with a third water outlet through hole which is in communication with the spray arm cavity 11, and the fourth spray head 8 is provided with a fourth water outlet through hole 81 which is in communication with the spray arm cavity 11, the water flow in the spray arm seat or the spray arm water pipe 30 can pass through the spray arm shaft 4 and the spray arm cavity 11 in sequence and be sprayed out from the water outlet through hole 21, the third water outlet through hole and the fourth water outlet through hole 81 respectively.

[0089] As shown in Figure 3 and Figure 4 , the spray head 2 and the third spray head 7 are cleaning spray heads, the number of the cleaning spray heads is large and the cleaning spray heads are scattered on the wall surface 12, the spray direction of the cleaning spray heads is generally perpendicular to the wall surface 12 or is arranged at an angle, and the water flow sprayed by the cleaning spray heads is mainly used for washing dishes. The fourth spray head 8 is a driving spray head, the driving spray head is generally located at the corner position of the spray arm body 1, the spray direction of the driving spray head is at an angle with the wall surface 12, and the spray direction of the driving spray head is opposite to the rotation direction of the spray arm body 1, when the water flow is sprayed out from the driving spray head, under the reaction force of the water flow, the spray arm body 1 will rotate around the spray arm shaft 4 in the opposite direction of the spray direction of the driving spray head. Figure 3 As a preferred solution, as shown in

[0090] In the prior art, the spray arm body 1 is usually fixed with the spray head 2, and the spray direction of the spray head 2 is also fixed, the coverage area of the spray head 2 with a single spray direction is limited, and there is a cleaning dead angle.

[0091] To solve the above problems, as shown in Figure 3 and Figure 4 , the spray head 2 is movably connected with the spray arm body 1, and the driving device 9 is used to adjust the posture of the spray head 2 to change the spraying direction of the water flow. During the operation of the spray arm 10, the driving device 9 adjusts the posture of the spray head 2 to change the spraying direction of the water flow, so as to automatically adjust the spraying direction of the spray head 2, cover a larger cleaning area, and improve the cleaning effect.

[0092] As a preferred solution, the driving device 9 can adjust the posture of the spray head 2 according to the temperature of the water flow in the spray arm body 1. Since the water flow in the spray arm 10 is switched between cold and hot water during each washing process of the dishwasher 100, the spraying direction of the spray head 2 can be changed to different spraying directions according to the temperature change during each washing process, so as to automatically adjust the spraying direction of the spray head 2, cover a larger cleaning area, and improve the cleaning effect.

[0093] As shown in Figure 3 , Figure 6 and Figure 7 , the spray head 2 is rotatably connected with the spray arm body 1, and the driving device 9 is used to drive the spray head 2 to rotate relative to the spray arm body 1. The driving device 9 includes a mounting member 91 and a temperature-sensitive deformation member 92. The mounting member 91 is arranged on the spray arm body 1 and located at one side of the spray head 2. One end of the temperature-sensitive deformation member 92 is fixed with the mounting member 91, and the other end of the temperature-sensitive deformation member 92 is movably connected with the spray head 2. The temperature-sensitive deformation member 92 is in contact with the spray arm body 1.

[0094] As shown in Figure 7 , when the temperature of the water flow in the spray arm body 1 rises, the temperature-sensitive deformation member 92 is affected by the temperature and deforms to bend. At this time, the temperature-sensitive deformation member 92 pushes the spray head 2 to rotate to the position shown in Figure 7 , and the spraying direction of the spray head 2 is changed along with the rotation of the spray head 2.

[0095] As shown in Figure 6 , when the temperature of the water flow in the spray arm body 1 decreases, the temperature-sensitive deformation member 92 returns to the original shape. The temperature-sensitive deformation member 92 pushes the spray head 2 back to the initial position shown in Figure 6 . In this way, with the continuous switching of the temperature of the water flow in the spray arm body 1, the spraying direction of the spray head 2 is automatically adjusted, a larger cleaning area is covered, and the cleaning effect is improved.

[0096] In addition, due to the physical properties of the temperature sensing deformation piece 92, the temperature sensing deformation piece 92 can deform with temperature changes, so the driving device 9 of the present embodiment does not need to additionally add temperature detection components, and can achieve driving of the spray head 2 through the temperature sensing deformation piece 92 which is relatively simple in structure. In addition, the driving device 9 outputs deformation caused by temperature changes itself, and the driving device 9 of the present embodiment does not need to additionally add electrically related components, which can save energy on the one hand, and avoid the influence of water and cleaning liquid in the use environment of the spray arm 10 on the components, avoid short circuit problems of the components, avoid damage to the dishwasher 100, and ensure the safety of the user. Specifically, the temperature sensing deformation piece 92 of the present embodiment is a bimetallic strip, which is a composite material composed of two or more metals or other materials with suitable properties. The bimetallic strip is also called a thermal bimetallic strip. Due to the different thermal expansion coefficients of each component layer, when the temperature changes, the deformation of the active layer is greater than that of the passive layer, so the overall bimetallic strip will bend to the passive layer side. The curvature of this composite material changes and thus deforms.

[0097] As shown in Figures 3-7 , the temperature sensing deformation piece 92 includes a first limiting portion 921, and the spray head 2 is provided with a limiting groove 2212, and the first limiting portion 921 is arranged in the limiting groove 2212 and can move in the limiting groove 2212. Since the temperature sensing deformation piece 92 is limited by the limiting groove 2212, when the spray head 2 is assembled, the temperature sensing deformation piece 92 will not come off the spray head 2. Specifically, the limiting groove 2212 is formed by the inward recess of the outer circumferential surface of the spray head 2. Since one end of the limiting groove 2212 is open, the first limiting portion 921 and the limiting groove 2212 can be quickly disassembled. Of course, in other embodiments, the limiting groove 2212 can be a plug-in through hole opened on the spray head 2, and the first limiting portion 921 is a plug-in protrusion which is inserted into the plug-in through hole. The plug-in protrusion cooperates with the plug-in through hole to also avoid the temperature sensing deformation piece 92 from coming off the spray head 2, and the limiting effect of this type of cooperation is more sufficient than the form of the limiting groove 2212 formed by recessing.

[0098] As shown in Figure 3 and Figure 4 , the temperature sensing deformation piece 92 and the mounting piece 91 are detachably connected, which can realize quick disassembly of the temperature sensing deformation piece 92 from the spray head 2 and the mounting piece 91, respectively, and facilitate the operator to quickly disassemble the temperature sensing deformation piece 92 from the spray head 2 and the mounting piece 91, respectively. Further, as shown in Figure 4 , the mounting piece 91 is provided with a mounting groove 911, one end of the temperature sensing deformation piece 92 is inserted into the mounting groove 911, and the other end of the temperature sensing deformation piece 92 is placed at the limiting groove 2212. Since both ends of the temperature sensing deformation piece 92 are limited, when the spray head 2 is assembled, the temperature sensing deformation piece 92 will not come off.

[0099] As a preferred solution, as shown in Figure 3 , Figure 4 and Figure 8 , a spray arm cavity 11 is formed in the spray arm body 1, and the driving device 9 is arranged outside the spray arm cavity 11, so that the temperature sensing deformation member 92 can be quickly disassembled from the mounting member 91 and the spray head 2.

[0100] In other embodiments, the driving device 9 is arranged inside the spray arm cavity 11, and the structure of the spray head 2 located outside the spray arm cavity 11 is still complete, and the overall appearance of the spray head 2 is more beautiful.

[0101] As shown in Figure 8 and Figure 9 , since the spray hole is made of rubber material, it has the characteristic of deforming under certain pressure. As shown in Figure 9 , when the water pressure is relatively large during the washing process, the water flow from the spray head 2 can extrude the side wall of the spray head 2, so that the first diameter d2 of the outlet of the water outlet hole 21 of the spray head 2 increases, and the diameter of the water flow increases. As shown in Figure 8 , when the washing pump power decreases due to the influence of residues during the washing process, the water pressure provided by the washing pump decreases, and the power of the water flow also decreases relatively. At this time, when the water flow is sprayed from the spray head 2, the spray head 2 will contract, the second diameter d1 of the water outlet hole 21 of the spray head 2 will decrease, and the speed of the water flow will increase. In this way, it can be ensured that even if the water pressure fluctuates during the washing process, the spray head 2 can automatically match the corresponding pressure, adjust the diameter of the water outlet hole 21 of the spray head 2, and thus maintain the speed of the water flow at a relatively high and stable state. In other embodiments, the spray head 2 can also be made of other elastic materials such as silica gel, and all materials capable of elastic deformation are within the protection scope of the present disclosure.

[0102] As a preferred solution, as shown in Figure 8 , when the spray arm cavity 11 is not supplied with water flow, the cross-sectional area of the water outlet hole 21 gradually decreases along the flow direction of the water flow. When the water flow is sprayed from the spray head 2, the diameter of the water flow gradually decreases, and the speed of the water flow gradually increases, so that the water flow can be sprayed at a relatively high speed, thereby improving the cleaning effect of the dishwasher 100.

[0103] As a preferred solution, as shown in Figure 9 and Figure 10 , the water outlet hole 21 includes a flow guide section 211 and a straight section 212 connected in sequence along the flow direction of the water flow. The flow guide section 211 is a circular arc transition surface. When the water flow fills the spray arm cavity 11, it enters the flow guide section 211 of the spray head 2 and is sprayed from the free end of the straight section 212. The circular arc transition surface can reduce the resistance when the water flow passes through, ensure a high flow rate of the water flow sprayed from the spray head 2, and improve the cleaning effect of the dishwasher 100.

[0104] As shown in Figure 5 , Figure 8 and Figure 9 , the main body 222 is provided with an air inlet hole 2221, which is in communication with the water outlet hole 21. According to the Venturi principle, when the water flow is sprayed from the water outlet hole 21, the flow rate is fast, the pressure in the inner wall area is low, and the pressure outside the nozzle 2 is high. The gas will be sucked into the water outlet hole 21 from the air inlet hole 2221 under the driving of the pressure difference and enter the water flow. In this way, small bubbles are mixed in the water flow. When the water flow with small bubbles contacts the surface of the tableware, the bubbles will burst, that is, cavitation phenomenon occurs, generating a large impact force, thereby better cleaning the stains on the surface of the tableware.

[0105] As shown in Figure 5 , Figure 8 and Figure 9 , the side wall of the water outlet hole 21 is provided with an air inlet hole 2221, which has a first end 22212 and a second end 22211. The first end 22212 is in communication with the water outlet hole 21. The angle between the axis of the water outlet hole 21 and the axis of the air inlet hole 2221 is an included angle. The second end 22211 is arranged close to the inlet of the water outlet hole 21 relative to the first end 22212. According to the Venturi principle, when the water flow is sprayed from the water outlet hole 21, the flow rate is fast, the pressure in the inner wall area is low, and the pressure outside the nozzle 2 is high. The gas will be sucked into the water outlet hole 21 from the air inlet hole 2221 and enter the water flow under the driving of the pressure difference. In this way, small bubbles are mixed in the water flow. When the water flow with small bubbles contacts the surface of the tableware, the bubbles will burst, that is, cavitation phenomenon occurs, generating a large impact force, thereby better cleaning the stains on the surface of the tableware.

[0106] In other embodiments, as shown in Figure 10 , the number of air inlet holes 2221 is at least two. The at least two air inlet holes 2221 are arranged in intervals along the flow direction of the water flow in the water outlet hole 21. The number of air inlet holes 2221 is large, which can realize more gas entering the water flow in the water outlet hole 21, and more small bubbles are formed, thereby realizing better cleaning effect on the surface of the tableware.

[0107] In other embodiments, as shown in Figure 11 and Figure 12 , the at least two air inlet holes 2221 are arranged in intervals along the circumference of the water outlet hole 21, or the at least two air inlet holes 2221 are uniformly distributed on the nozzle 10, which can also realize better cleaning effect on the surface of the tableware.

[0108] Further, as shown in Figures 8-12As shown, the ratio of the diameter of the air inlet through hole 2221 to the diameter of the water outlet through hole 21 is 1 / 100-1 / 2. Since the diameter of the air inlet through hole 2221 is greatly different from the diameter of the water outlet through hole 21, the gas outside the nozzle 2 can enter the water outlet through hole 21 more smoothly and more, thereby forming small bubbles with a higher density, which is beneficial to the cleaning of the tableware by the subsequent water flow mixed with small bubbles. In addition, the diameter of the air inlet through hole 2221 gradually decreases from the second end 22211 to the first end 22212, and the speed of the external gas entering gradually increases, so that the external gas can enter the water flow of the water outlet through hole 21 at a higher speed, thereby improving the density of the small bubbles and improving the cleaning effect of the water flow mixed with small bubbles.

[0109] As a preferred solution, as Figure 13 shown, the side wall of the water outlet through hole 21 is also provided with a branch air inlet through hole 2222, the two ends of the branch air inlet through hole 2222 are respectively communicated with the air inlet through hole 2221 and the external air. More branch air inlet through holes 2222 can realize that more external gas enters the air inlet through hole 2221, so that more gas is mixed into the water flow of the water outlet through hole 21, the small bubbles formed are more dense, and the effect of the small bubbles wrapping the impurities on the surface of the tableware is better, which can realize better cleaning effect on the surface of the tableware. Further, as Figure 13 shown, the ratio of the diameter of the branch air inlet through hole 2222 to the diameter of the air inlet through hole 2221 is 1 / 100-1 / 2, compared with Figure 8 the nozzle 2 shown in Figure 13 the structure of the nozzle 2 can realize the formation of more dense small bubbles, and due to the diameter difference, the external gas can enter the water outlet through hole 21 through the branch air inlet through hole 2222 more smoothly.

[0110] Further, as Figure 13 shown, the number of branch air inlet through holes 2222 is at least two, and at least two branch air inlet through holes 2222 are communicated with the corresponding air inlet through hole 2221, which can realize the effect of more external gas entering the air inlet through hole 2221 through the branch air inlet through hole 2222. In addition, the branch air inlet through hole 2222 of the present embodiment is a straight through hole, which can realize the effect of the external gas entering the air inlet through hole 2221 quickly through the branch air inlet through hole 2222.

[0111] In other embodiments, the branch air inlet through hole 2222 can be a zigzag or a wavy line (not shown in the figure). The external gas passing through the branch air inlet through hole 2222 in this structure can achieve constant impact with the inner wall surface of the branch air inlet through hole 2222, and the direction of the speed of the gas entering the air inlet through hole 2221 and the water outlet through hole 21 through the branch air inlet through hole 2222 is different. The gas in the water flow entering the water outlet through hole 21 can achieve sufficient and complete disorder of the water flow, thereby forming denser bubbles, facilitating better cleaning effect of the small-bubble-containing water flow on tableware.

[0112] In addition, as shown in Figure 13 The side wall of the water outlet through hole 21 is also provided with a branch air outlet through hole 2223, which is in communication with the water outlet through hole 21 and the air inlet through hole 2221, respectively. More gas can enter the water flow in the water outlet through hole 21, further improving the density of small bubbles in the water flow in the water outlet through hole 21, and improving the cleaning effect of the small-bubble-containing water flow in the water outlet through hole 21 on the surface of tableware. In addition, through the arrangement of the branch air outlet through hole 2223, the gas mixing in a larger area of the water flow in the water outlet through hole 21 can be achieved, the gas-liquid mixing efficiency can be improved, and the proportion of small bubbles in a unit volume of water flow can be improved, thereby further improving the cleaning effect of the small-bubble-containing water flow on tableware.

[0113] In the prior art, the spray arm body is usually fixed with the spray head, and the spraying direction of the spray head is also fixed. For different models of dishwashers, the coverage area of the single spray direction spray head is limited, and the spray arm has a cleaning dead angle. If it is necessary to adjust the spraying direction of the spray head, the entire spray arm needs to be re-made. The single model of the spray arm has poor adaptability to different models of dishwashers, and separate corresponding spray arms need to be made for different models of dishwashers, which will result in high manufacturing cost of the dishwasher.

[0114] As Figures 8-13As shown, the spray arm body 1 comprises a first connecting piece 121, the spray head 2 comprises a second connecting piece 22, the first connecting piece 121 is detachably connected with the second connecting piece 22, facilitating the disassembly and replacement of the spray head 2, improving the replacement and cleaning of the spray head 2 by the operator. Since all the spray heads 2 are of a detachable structure, all cavitation type spray heads 2 can be used, or other types of spray heads 2 can be used in combination. During testing, the combination mode of different spray heads 2 can be adjusted according to the actual cleaning effect to achieve the best cleaning effect and shorten the verification time of repeated proofing of different spray arms 10. When cleaning the spray arm 10, the spray head 2 can be directly taken out for cleaning the spray head 2 and the spray arm body 1 separately. In addition, since the full disassembly type spray head 2 is adopted, if a certain spray head 2 is damaged, only the single spray head 2 needs to be replaced during maintenance, without the need to replace the entire spray arm 10, which is simple to operate and greatly reduces the replacement cost of the spray head 2. At the same time, different spray heads 2 can be replaced according to different tableware to achieve differential cleaning of different tableware and achieve the best cleaning effect of the dishwasher 100. In addition, according to the placement of the tableware to be cleaned, the position of the spray head 2 can be changed so that the spray head 2 can be aimed at the tableware that is difficult to clean. In this way, even if the tableware is placed in different positions, the best cleaning effect can be achieved.

[0115] As a preferred solution, as shown in Figure 9 and Figure 10 As shown, one of the first connecting piece 121 and the second connecting piece 22 is a second recess, and at least part of the other is inserted into the second recess, which can realize the quick disassembly and replacement of the spray head 2 and the spray arm body 1.

[0116] As shown in Figures 8-13 The first connecting piece 121 is a second recess provided on the spray arm body 1, the second recess is a jack, the jack is in communication with the spray arm cavity 11, and at least part of the second connecting piece 22 is inserted into the jack and can completely block the second recess. This can prevent the water flow in the spray arm cavity 11 from leaking out of the gap between the first connecting piece 121 and the second connecting piece 22, ensure a high water pressure of the water flow sprayed from the spray head 2, and achieve a good cleaning effect of the water flow sprayed from the spray head 2.

[0117] Further, as shown in Figures 8-13As shown, the second connecting piece 22 comprises a main body part 222, and a second limiting part 221 and a third limiting part 223 arranged on the outer periphery of the main body part 222 and spaced apart along a preset direction. At least part of the main body part 222 is inserted into the insertion hole, and the second limiting part 221 and the third limiting part 223 are clamped on both sides of the wall surface 12 of the insertion hole. When the nozzle 2 is to be assembled onto the spray arm body 1, the third limiting part 223 is pressed towards the insertion hole to extrude the insertion hole, so that the insertion hole is deformed, the third limiting part 223 is inserted into the insertion hole, and then the third limiting part 223 restores to the original shape. Under the limiting action of the second limiting part 221 and the third limiting part 223, the nozzle 2 is fixed on the spray arm body 1. The arrangement of the second limiting part 221 and the third limiting part 223 can prevent the nozzle 2 from falling off the spray arm body 1, and ensure better use effect of the spray arm 10. When the nozzle 2 needs to be disassembled, the nozzle 2 only needs to be pulled outwards with force. Due to the force, the third limiting part 223 deforms and then comes out of the insertion hole, so that the operation is convenient and fast. At the same time, the diameter of the insertion hole can be set larger. Compared with the general fixed nozzle type spray arm 10, the operator can more easily view and clean the inside of the spray arm body 1.

[0118] As shown in the drawings, Figures 8-13 The second limiting part 221 and the third limiting part 223 are plate-shaped, and the cross section of the second limiting part 221 and the third limiting part 223 is larger than the cross section of the insertion hole. The second limiting part 221 and the third limiting part 223 can be in contact with the wall surface 12 with a larger area respectively, and further prevent the nozzle 2 from falling off the spray arm body 1. As a preferred solution, the distance between the second limiting part 221 and the third limiting part 223 is slightly larger than the thickness of the wall surface 12. The second limiting part 221 and the third limiting part 223 can be in clearance fit with the wall surface 12 respectively, so that the nozzle 2 can rotate relative to the wall surface 12, but will not fall off the wall surface 12.

[0119] Since the nozzle 2 and the spray arm body 1 are made of different materials, the nozzle 2 and the spray arm body 1 can be made of different colors. The color of the manufactured spray arm 10 is more rich, and the spray arm 10 is not a single color product, so the spray arm 10 is more beautiful.

[0120] Embodiment Two

[0121] As shown in the drawings, Figures 14-16 The spray arm 10 of the present embodiment has basically the same structure as the spray arm 10 of embodiment one. The main difference between the two is that the limiting groove 2212 is provided as at least two, and the at least two limiting grooves 2212 are spaced apart along the circumference of the nozzle 2. The nozzle 2 can be provided with multiple limiting grooves 2212, which can be adjusted in multiple stages. This can realize the assembly of the nozzle 2 in multiple initial states with different spraying directions and the spray arm body 1, and can meet the needs of more cleaning scenes. At the same time, the actual cleaning situation can be adjusted manually, which is convenient and fast.

[0122] Example 3

[0123] like Figure 17 As shown, this embodiment provides a spray arm 10. The structure of the spray arm 10 in this embodiment is basically the same as that of the spray arm 10 in Embodiment 1. The main difference between the two is that the driving device 9 includes a driving component 93 and a temperature detection mechanism. The temperature detection mechanism is used to detect the temperature of the water flow in the spray arm body 1. The driving component 93 adjusts the posture of the nozzle 2 according to the temperature detected by the temperature detection mechanism. This enables the nozzle 2 to be precisely and quickly adjusted to a specific posture at the corresponding temperature, so that the dishwasher 100 can clean the tableware in the best cleaning state.

[0124] Specifically, the dishwasher 100 also includes a controller, a temperature detection mechanism, and a drive assembly 93, which are electrically connected to the controller. The controller obtains the water flow temperature detected by the temperature detection mechanism, and then controls the drive assembly 93 to work according to the detected water flow temperature. The drive assembly 93 can adjust the nozzle 2 to maintain a specific posture.

[0125] Specifically, such as Figure 17 As shown, the drive assembly 93 includes a linear output drive mechanism 931 and a rack 932. The linear output drive mechanism 931 is mounted on the spray arm body 1. The outer periphery of the nozzle 2 is provided with meshing teeth 25, which mesh with the rack 932. The output end of the linear output drive mechanism 931 drives the rack 932 to move in a linear direction. The rack 932 cooperates with the meshing teeth 25 to realize the rotation of the nozzle 2, which can realize the precise adjustment of the nozzle 2's posture.

[0126] Example 4

[0127] like Figure 18 As shown, this embodiment provides a spray arm 10. The structure of the spray arm 10 in this embodiment is basically the same as that of the spray arm 10 in Embodiment 1. The main difference is that the driving device 9 includes a rotary output driving mechanism 933 and a gear 934. The rotary output driving mechanism 933 is mounted on the spray arm body 1, and the gear 934 is fixed to the output end of the rotary output driving mechanism 933. The outer periphery of the nozzle 2 is provided with meshing teeth 25, which mesh with the gear 934. The output end of the rotary output driving mechanism 933 drives the gear 934 to rotate. The gear 934 and the meshing teeth 25 cooperate to realize the rotation of the nozzle 2, which can achieve precise adjustment of the nozzle 2's posture.

[0128] Example 5

[0129] like Figure 19As shown, this embodiment provides a spray arm 10. The structure of the spray arm 10 in this embodiment is basically the same as that of the spray arm 10 in Embodiment 1. The main difference is that the driving device 9 includes a linear output driving mechanism 931, a connecting rod 935, and a slider 936. A groove 14 is provided on the spray arm body 1. One end of the connecting rod 935 is pivotally connected to the nozzle 2, and the other end of the connecting rod 935 is pivotally connected to the slider 936. The slider 936 is inserted into the groove 14 and can slide along the groove 14. The output end of the linear output driving mechanism 931 is connected to the slider 936. The driving device 9 is a crank-slider structure, which can realize precise adjustment of the nozzle 2's attitude. In addition, through the crank-slider structure, the nozzle 2 can be adjusted in attitude within a large angle range.

[0130] Example 6

[0131] like Figure 20 As shown, this embodiment provides a spray arm 10. The structure of the spray arm 10 in this embodiment is basically the same as that of the spray arm 10 in Embodiment 1. The main difference between the two is that the driving device 9 includes a linear driving mechanism 937 and a follower 938. The outer periphery of the nozzle 2 is cam-shaped. The linear driving mechanism 937 can drive the follower 938 to move in a linear direction. The free end of the follower 938 abuts against the outer periphery of the nozzle 2, which can realize the precise adjustment of the nozzle 2's posture.

[0132] Example 7

[0133] like Figure 21 As shown, this embodiment provides a spray arm 10. The structure of the spray arm 10 in this embodiment is basically the same as that of the spray arm 10 in Embodiment 5. The main difference is that the driving device 9 includes a rotary output driving mechanism 933 and a transmission assembly 939. The transmission assembly 939 includes a first transmission wheel 9391, a second transmission wheel 9392, and an annular conveyor belt 9393. The first transmission wheel 9391 is pivotally connected to the spray arm body 1 and is disposed on one side of the nozzle 2. The second transmission wheel 9392 is sleeved on the outer periphery of the nozzle 2. The annular conveyor belt 9393 is sleeved on the outer periphery of the first transmission wheel 9391 and the second transmission wheel 9392 and is tensioned by the first transmission wheel 9391 and the second transmission wheel 9392. When the rotary output driving mechanism 933 is working, the first transmission wheel 9391 and the annular conveyor belt 9393 rotate, thereby driving the second transmission wheel 9392 to rotate, thereby realizing the rotation of the nozzle 2 relative to the spray arm body 1, and thus realizing the precise adjustment of the nozzle 2's posture.

[0134] Example 8

[0135] like Figure 22As shown, the embodiment provides a spray arm 10, the structure of the spray arm 10 of the embodiment is basically the same as that of the spray arm 10 in Embodiment One, the main difference between the two is that the spray head 2 is ball-hinged with the spray arm body 1, the driving device 9 includes a linear driving mechanism 937, one of the body and the output rod of the linear driving mechanism 937 is pivoted with the spray arm body 1, the other is pivoted with the spray head 2, the posture of the spray head 2 is adjusted by the extension or retraction of the output rod of the linear driving mechanism 937 relative to the body. Since the spray head 2 is ball-hinged with the spray arm body 1, it can further avoid the spray head 2 from falling off the spray arm body 1, and the ball-hinge can realize more adjustment of the spraying direction of the spray head 2.

[0136] In addition, the linear driving mechanism 937 can also be provided as at least two, the at least two linear driving mechanisms 937 are arranged at the outer periphery of the spray head 2, and through the cooperation of the at least two linear driving mechanisms 937, the spray head 2 can realize more adjustment of the spraying direction.

[0137] As shown, Figure 22 the wall surface 12 is inwardly recessed to form a spherical-shaped accommodation space, the spray head 2 in a spherical shape is at least partially accommodated in the accommodation space, the bottom surface of the accommodation space is provided with an opening 122, the opening 122 is respectively communicated with the spray arm cavity 11 and the water outlet through hole 21, wherein the area of the opening 122 is larger than that of the inlet of the water outlet through hole 21, so as to facilitate the switching of the angle of the spray head 2.

[0138] Embodiment Nine

[0139] As shown, Figure 23 and Figure 24 the embodiment provides a spray arm 10, the structure of the spray arm 10 of the embodiment is basically the same as that of the spray arm 10 in Embodiment One, the main difference between the two is that the spray arm body 1 has a wall surface 12, the spray head 2 is arranged on the wall surface 12, and the axis of the water outlet through hole 21 is arranged at an angle with the wall surface 12. The spray arm body 1 includes a first spray arm body 1a and a second spray arm body 1b, the first spray arm body 1a is provided with a first spray head 2a, and the second spray arm body 1b is provided with a second spray head 2b.

[0140] As can be seen, Figure 23 the initial spraying directions of the first spray head 2a and the second spray head 2b are different, when the projection La of the first spray arm body 1a is parallel or collinear with the extension line of the first spray arm body 1a, the projection Lb of the second spray arm body 1b is arranged at an angle with the extension line of the second spray arm body 1b, at this time, the second spray head 2b provides a rotary driving force for the spray arm 10, and the rotary direction of the spray arm 10 is the O direction (counterclockwise).

[0141] As can be seen, Figure 24As can be seen, when the water in the spray arm body 1 is heated, the temperature sensing deformation member 92 is bent and deformed, pushing the first spray head 2a and the second spray head 2b to rotate, at this time, the second spray head 2b is arranged at an angle with the extension line of the second spray arm body 1b, and the first spray head 2a is arranged at an angle with the projection of the first spray arm body 1a, the first spray head 2a provides a rotary driving force for the spray arm 10, at this time, the rotary direction of the spray arm 10 is the P direction (clockwise). In this way, according to the change of the water temperature during the washing process, the rotary direction of the spray arm 10 is changed, thereby effectively improving the cleaning of the dishes in different positions in the dishwasher 100, and achieving a better cleaning effect on the dishes.

[0142] As shown in Figure 25 and Figure 26 , the temperature sensing deformation member 92 is rod-shaped, the length of the temperature sensing deformation member 92 is adjustable, the temperature sensing deformation member 92 controls a larger rotary angle of the spray head 2 according to the difference in the deformation degree after being affected by the temperature, different lengths of the temperature sensing deformation member 92 can be matched according to actual needs, the force value of the spray head 2 driving the spray arm 10 to rotate is also different, and the overall rotary speed of the spray arm 10 will also be different.

[0143] Example Ten

[0144] As shown in Figure 27 , the spray arm 10 of the present embodiment has a structure basically the same as that of the spray arm 10 in Example One, the main difference between the two is that, as shown in Figure 27 , the third limiting portion 223 of the present embodiment can be a buckle structure, through the arrangement of the buckle structure, the spray head 2 and the spray arm body 1 can be quickly disassembled and assembled, and the disassembly and assembly efficiency of the spray head 2 and the spray arm body 1 is improved.

[0145] Specifically, as shown in Figure 27 , the third limiting portion 223 includes a cantilever portion 2231 and a clamping portion 2232, the two ends of the cantilever portion 2231 are fixedly connected with the main body portion 222 and the clamping portion 2232 respectively, and the cantilever portion 2231 can be elastically deformed due to its slender state. When the spray head 2 is to be assembled to the spray arm body 1, the buckle structure is aligned with the insertion hole on the wall surface 12, and then the spray head 2 is pressed downward, the buckle structure is deformed and clamped into the insertion hole, under the combined limiting action of the plate-shaped second limiting portion 221 and the buckle structure, the spray head 2 is fixed on the spray arm body 1. When the spray head 2 needs to be disassembled, the spray head 2 is only needed to be pulled outward with force, and the buckle structure will be deformed and then come out of the insertion hole, which is convenient and fast. Among them, as shown in Figure 27As shown, the maximum distance between the clamping portion 2232 and the cantilever portion 2231 is 2mm-100mm, when the operator pulls the nozzle 2 outward with a small force, the clamping portion 2232 can be easily pulled out of the insertion hole. As a preferred solution, the maximum distance is preferably 40mm-50mm, which can realize the stable clamping of the clamping portion 2232 and the wall 12, and also facilitate the operator to separate the nozzle 2 from the wall 12.

[0146] Of course, in other embodiments, only the second limiting portion 221 can be provided as a buckle structure, and the second limiting portion 221 and the third limiting portion 223 can also be provided as a buckle structure at the same time.

[0147] As a preferred solution, as shown, Figure 27 The buckle structure is provided in three groups, and the three groups of buckle structures are distributed along the circumference of the main body portion 222, so that each position of the circumference of the main body portion 222 can stably abut against the wall 12. Specifically, the three buckle structures are arranged at equal intervals along the circumference of the main body portion 222, so that each buckle structure is uniformly stressed, avoiding damage to the buckle structure, improving the service life of each buckle structure, reducing the replacement of the nozzle 2 by the user, and reducing the consumption of the dishwasher 100.

[0148] As a preferred solution, as shown, Figure 27 The clamping portion 2232 includes a trigger surface 22321, when the operator presses the nozzle 2 downward, the open edge of the insertion hole abuts against the trigger surface 22321, and the open edge of the insertion hole applies pressure to the clamping portion 2232 to move in the direction of the water outlet through-hole 21, so that the cantilever portion 2231 bends in the direction of the water outlet through-hole 21, so that the clamping portion 2232 enters the spray arm cavity 11 through the insertion hole, and the clamping portion 2232 can be clamped against the inner surface of the wall 12. The operator can quickly install the nozzle 2 to the wall 12 by a simple pressing action.

[0149] Specifically, the buckle structure can be made of a material capable of elastic deformation, such as resin, plastic, rubber, etc., which can further improve the elastic deformation capability of the buckle structure after being stressed, and all materials capable of elastic deformation are within the protection scope of the present disclosure.

[0150] Obviously, the above embodiments of the present application are only examples for clear illustration of the present application, and are not intended to limit the embodiments of the present application. Based on the above description, other different forms of changes or variations can be made by those skilled in the art. Here, all embodiments are not required to be exhausted. Any modification, equivalent replacement and improvement made within the spirit and principles of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. A spray arm, characterized in that, include: The nozzle (2) is capable of spraying water. The spray arm body (1) is rotatably connected to the spray arm body (1); as well as The drive device (9) is configured to adjust the attitude of the nozzle (2) to change the spray direction of the water flow, wherein the drive device (9) is configured to drive the nozzle (2) to rotate relative to the spray arm body (1) according to the temperature of the water flow in the spray arm body (1) to adjust the attitude of the nozzle (2). The driving device (9) includes a mounting component (91) and a temperature-sensitive deformable component (92). The mounting component (91) is disposed on the spray arm body (1) and located on one side of the nozzle (2). One end of the temperature-sensitive deformable component (92) is fixed to the mounting component (91), and the other end of the temperature-sensitive deformable component (92) is movably connected to the nozzle (2). The temperature-sensitive deformable component (92) is in contact with the spray arm body (1); or The drive device (9) includes a drive assembly (93) and a temperature detection mechanism, the temperature detection mechanism being configured to detect the temperature of the water flow within the spray arm body (1), and the drive assembly (93) adjusting the posture of the nozzle (2) according to the temperature detected by the temperature detection mechanism.

2. The spray arm according to claim 1, characterized in that, The temperature-sensitive deformable part (92) includes a first limiting part (921), and a limiting groove (2212) is provided on the nozzle (2). The first limiting part (921) is disposed in the limiting groove (2212) and can move in the limiting groove (2212).

3. The spray arm according to claim 2, characterized in that, The limiting groove (2212) is provided in at least two configurations, and the at least two limiting grooves (2212) are arranged at circumferential intervals along the nozzle (2); and / or The limiting groove (2212) is formed by the inward indentation of the outer peripheral surface of the nozzle (2).

4. The spray arm according to claim 1, characterized in that, The temperature-sensitive deformable element (92) is detachably connected to the mounting element (91); and / or The temperature-sensitive deformable element (92) is rod-shaped, and the length of the temperature-sensitive deformable element (92) is adjustable.

5. The spray arm according to claim 1, characterized in that, The driving component (93) includes: A linear output drive mechanism (931) and a rack (932) are provided. The linear output drive mechanism (931) is mounted on the spray arm body (1). The outer periphery of the nozzle (2) is provided with meshing teeth (25), which mesh with the rack (932). A rotary output drive mechanism (933) and a gear (934) are provided. The gear (934) is fixed at the output end of the rotary output drive mechanism (933). The nozzle (2) has meshing teeth (25) on its outer periphery, which mesh with the gear (934). The linear output drive mechanism (931), connecting rod (935), and slider (936) are provided. A groove (14) is provided on the spray arm body (1). One end of the connecting rod (935) is pivotally connected to the nozzle (2), and the other end is pivotally connected to the slider (936). The slider (936) is inserted into the groove (14) and can slide along the groove (14). The output end of the linear output drive mechanism (931) is connected to the slider (936); or A linear drive mechanism (937) and a follower (938) are provided. The outer periphery of the nozzle (2) is cam-shaped. The linear drive mechanism (937) can drive the follower (938) to move in a linear direction. The free end of the follower (938) abuts against the outer periphery of the nozzle (2). The rotary output drive mechanism (933) and the transmission assembly (939) include a first transmission wheel (9391), a second transmission wheel (9392), and an annular conveyor belt (9393). The first transmission wheel (9391) is pivotally connected to the spray arm body (1) and disposed on one side of the nozzle (2). The second transmission wheel (9392) is sleeved on the outer periphery of the nozzle (2). The annular conveyor belt (9393) is sleeved on the outer periphery of the first transmission wheel (9391) and the second transmission wheel (9392) and is tensioned by the first transmission wheel (9391) and the second transmission wheel (9392).

6. The spray arm according to claim 1, characterized in that, The nozzle (2) is ball-jointed to the spray arm body (1). The drive device (9) includes a linear drive mechanism (937). One of the body and the output rod of the linear drive mechanism (937) is pivotally connected to the spray arm body (1), and the other is pivotally connected to the nozzle (2).

7. The spray arm according to any one of claims 1 to 6, characterized in that, The spray arm body (1) has a spray arm cavity (11), and the driving device (9) is located inside or outside the spray arm cavity (11).

8. The spray arm according to any one of claims 1 to 3, characterized in that, The spray arm body (1) has a wall (12), and the nozzle (2) is disposed on the wall (12). The nozzle (2) has a water outlet hole (21), and the axis of the water outlet hole (21) is set at an angle to the wall (12).

9. The spray arm according to claim 8, characterized in that, The spray arm body (1) includes a first spray arm body (1a) and a second spray arm body (1b). The first spray arm body (1a) is provided with a first nozzle (2a), and the second spray arm body (1b) is provided with a second nozzle (2b). When the projection of the first nozzle (2a) onto the first spray arm body (1a) is parallel or collinear with the extension line of the first spray arm body (1a), the projection of the second nozzle (2b) onto the second spray arm body (1b) is set at an angle to the extension line of the second spray arm body (1b); and / or When the projection of the second nozzle (2b) onto the second spray arm body (1b) is parallel or collinear with the extension line of the second spray arm body (1b), the projection of the first nozzle (2a) onto the first spray arm body (1a) is set at an angle to the extension line of the first spray arm body (1a).

10. The spray arm according to claim 8, characterized in that, The nozzle (2) is an elastic element, and the diameter of the water outlet hole (21) changes with the water pressure inside the spray arm cavity (11); and / or When the spray arm cavity (11) is not irrigated with water, the cross-sectional area of ​​the water outlet (21) gradually decreases along the flow direction of the water; and / or The water outlet (21) includes a guide section (211) and a straight section (212) connected sequentially along the flow direction of the water flow, wherein the guide section (211) is a circular arc transition surface; and / or An air inlet (2221) is provided on the side wall of the water outlet (21). The air inlet (2221) has a first end (22212) and a second end (22211). The first end (22212) is connected to the water outlet (21). The axis of the water outlet (21) and the axis of the air inlet (2221) are set at an angle. The second end (22211) is set close to the inlet of the water outlet (21) relative to the first end (22212).

11. The spray arm according to any one of claims 1 to 6, characterized in that, The spray arm body (1) includes a first connector (121), and the nozzle (2) includes a second connector (22). The first connector (121) and the second connector (22) are detachably connected.

12. A dishwasher, characterized in that, Includes the spray arm as described in any one of claims 1 to 11.

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