Spraying arm structure of dish washing machine and dish washing machine with spraying arm structure

Abstract

The utility model discloses a spraying arm structure of a dish-washing machine and the dish-washing machine with the spraying arm structure, and belongs to the technical field of dish-washing machines, the spraying arm structure of the dish-washing machine comprises a main spraying arm, an auxiliary spraying arm and a spraying pipe, the main spraying arm is rotatably connected with the end part of the spraying pipe; the rotary reset spraying assembly is used for spraying outside the spraying area of the main spraying arm; the rotary reset spraying assembly comprises at least one auxiliary spraying arm, and the auxiliary spraying arm is rotationally connected with the main spraying arm and communicated with the cavity of the main spraying arm; and the reset assembly is arranged between the main spraying arm and the auxiliary spraying arm. The problem of spraying dead angles is solved, the reset assembly is used for guaranteeing the position of the auxiliary spraying arm relative to the main spraying arm, the auxiliary spraying arm continuously makes contact with the inner container of the dish washing machine along with rotation of the main spraying arm, the area which cannot be cleaned by the main spraying arm is cleaned, the structure is simple, reliability is high, cost is low, and repair and maintenance are easy.

Description

Technical Field

[0001] The utility model relates to the technical field of dishwashers, in particular to a spray arm structure of a dishwasher and a dishwasher with the spray arm structure. Background Art

[0002] In the prior art, for example, the patent with publication number CN109620087B discloses a dishwasher sprayer and a dishwasher, comprising a water pipe assembly and a main spray arm rotatably connected to the water pipe assembly, a pair of auxiliary spray arms rotatably mounted at both ends of the main spray arm, and a transmission mechanism for driving the two auxiliary spray arms to rotate relative to the main spray arm when the main spray arm rotates; water spray ports are respectively provided on the main spray arm and the auxiliary spray arm to spray water into the dishwasher; the sprayer has the advantages of a large spray coverage range through the movement coordination of the main spray arm and the auxiliary spray arm, and is particularly suitable for the inner tank of a rectangular dishwasher, which can effectively reduce cleaning dead corners and improve the working efficiency of the dishwasher.

[0003] The patent with the publication number CN107616771A discloses a dishwasher spray structure and a dishwasher, wherein the main sprayer includes at least two spray arms, the ends of the spray arms are provided with planetary shafts, the planetary shafts are rotatably connected with planetary sprayers, each planetary sprayer includes at least one spray rod, and the spray arms and the spray rods are provided with water spray holes. At the same time, a dishwasher having the above-mentioned dishwasher spray structure is disclosed, wherein a planetary sprayer is provided at the end of the main sprayer, so that the spray water column is more easily sprayed to the corner position of the inner tank, which can effectively prevent the occurrence of dead corners in washing, and at the same time, the water column can be sprayed to a high place instead of the side wall, thereby reducing the noise of the dishwasher.

[0004] However, the existing ones have the following shortcomings:

[0005] 1. After the auxiliary spray arm is set, the structure of the entire dishwasher spray arm is more complicated, with low reliability and high cost;

[0006] 2. When the main spray arm rotates to the diagonal of the dishwasher inner tank, the auxiliary spray arm may not overlap with the main spray arm, and the area for solving the blind spot of spraying is limited. Utility Model Content

[0007] The technical problem to be solved by the utility model is to provide a dishwasher spray arm structure and a dishwasher with the spray arm structure, so as to solve the problem raised in the background technology.

[0008] In order to solve the above technical problems, the utility model provides a dishwasher spray arm structure and a dishwasher having the spray arm structure, comprising:

[0009] A main spray arm, the main spray arm is rotatably connected to the end of the spray pipe;

[0010] A rotary reset spray assembly is connected to the main spray arm.

[0011] Preferably, the rotary reset spray assembly comprises:

[0012] At least one auxiliary spray arm, the auxiliary spray arm is rotatably connected to the main spray arm and communicates with the cavity of the main spray arm;

[0013] A reset component is arranged between the main spray arm and the auxiliary spray arm.

[0014] Preferably, the number of the auxiliary spray arms is two, and the two auxiliary spray arms are symmetrically arranged about the rotation center of the main spray arm.

[0015] Preferably, the two auxiliary spray arms are arranged at both ends of the main spray arm.

[0016] Preferably, the maximum length of the two auxiliary spray arms when they overlap with the main spray arm is less than the distance between the diagonals of the inner tank of the dishwasher.

[0017] Preferably, the reset assembly includes a reset elastic member, one end of the reset elastic member is connected to the auxiliary spray arm, and the other end of the reset elastic member is connected to the main spray arm.

[0018] Preferably, the rotation center of the auxiliary spray arm is located on a side of the auxiliary spray arm close to the reset assembly.

[0019] Preferably, the resetting elastic member is a spring, and a coating is provided on the outer side wall of the spring.

[0020] Preferably, the water spray holes on the auxiliary spray arm are arranged on a side away from the main spray arm, and the main water spray holes on the main spray arm are arranged on a side facing the auxiliary spray arm.

[0021] The utility model also provides a dishwasher, which has the above-mentioned dishwasher spray arm structure.

[0022] The above technical solution has the following beneficial effects:

[0023] By setting a reset component, the auxiliary spray arm can spray water on the area that the main spray arm cannot clean, thus solving the problem of spray blind spots. The reset component is used to ensure the position of the auxiliary spray arm relative to the main spray arm. As the main spray arm rotates, the auxiliary spray arm continuously contacts the inner tank of the dishwasher to clean the area that the main spray arm cannot clean. It has a simple structure, high reliability, low cost, and simple repair and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1It is a structural schematic diagram of the spray arm structure of the dishwasher of the utility model when the auxiliary spray arm and the main spray arm overlap;

[0025] Figure 2 It is a structural schematic diagram of the coordination between the spray arm structure of the dishwasher and the inner tank of the dishwasher when the auxiliary spray arm and the main spray arm overlap in the utility model;

[0026] Figure 3 It is a structural schematic diagram of the spray arm structure of the dishwasher of the utility model when the auxiliary spray arm and the main spray arm do not overlap;

[0027] Figure 4 It is a structural schematic diagram of the coordination between the spray arm structure of the dishwasher and the inner tank of the dishwasher when the auxiliary spray arm and the main spray arm do not overlap with each other;

[0028] Figure 5 It is another structural schematic diagram of the spray arm structure of the dishwasher of the utility model;

[0029] Figure 6 for Figure 5 The structural diagram of A in the figure;

[0030] Figure 7 This is another structural schematic diagram of the spray arm structure of the dishwasher of the present utility model. DETAILED DESCRIPTION

[0031] The specific implementation methods of the present invention are further described below in conjunction with the accompanying drawings. It should be noted that the description of these implementation methods is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in each implementation method of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0032] Example 1

[0033] refer to Figure 1 to Figure 4 , the dishwasher spray arm structure includes:

[0034] A main spray arm 1, which is rotatably connected to the end of the spray pipe 8 and communicates with the inside of the spray pipe 8. Water in the spray pipe 8 can enter the inside of the main spray arm 1 from the spray pipe 8. The main spray arm 1 rotates to spray water to clean the tableware;

[0035] Two auxiliary spray arms 2 are rotatably connected to the main spray arm 1 and communicated with the cavity of the main spray arm 1. Water entering the main spray arm 1 can enter the auxiliary spray arm 2, and then be discharged through the water spray hole 5 on the auxiliary spray arm 2 to wash the tableware. When the main spray arm 1 rotates to the diagonal position of the dishwasher inner tank 9, the two auxiliary spray arms 2 overlap with the main spray arm 1 or the angle is small, so that the two auxiliary spray arms 2 can clean the blind corners of the dishwasher, and the cleaning is cleaner.

[0036] A reset assembly is arranged between the main spray arm 1 and the auxiliary spray arm 2. The reset assembly is used to reset the auxiliary spray arm 2. The auxiliary spray arm 2 and the main spray arm 1 can rotate relative to each other. After the reset assembly connects the main spray arm 1 and the auxiliary spray arm 2, the initial position is that the auxiliary spray arm 2 and the main spray arm 1 partially overlap. At this time, the reset elastic member 3 of the reset assembly is in a state of no force. At this time, the main spray arm 1 rotates at the diagonal position of the dishwasher inner tank 9, and the auxiliary spray arm 2 partially overlaps with the main spray arm 1. The auxiliary spray arm 2 extends to the corner of the dishwasher inner tank 9 to clean the area that the main spray arm 1 cannot reach, so as to solve the problem of cleaning the dishwasher at a dead corner;

[0037] When the main spray arm 1 continues to rotate from the diagonal position of the dishwasher inner tank 9, the auxiliary spray arm 2 begins to contact the side wall of the dishwasher inner tank 9, and the main spray arm 1 continues to rotate. Under the push of the main spray arm 1, the angle between the auxiliary spray arm 2 and the main spray arm 1 gradually increases, and at the same time, the reset elastic member 3 of the reset assembly is gradually stressed, and the force of the reset elastic member 3 gradually increases. When the main spray arm 1 rotates 45 degrees from the diagonal position, the force of the reset elastic member 3 reaches the maximum. If the cross section of the dishwasher inner tank 9 is a square, when the main spray arm 1 is rotated to be perpendicular to the side wall of the inner tank 9, the reset elastic member 3 is subjected to the maximum force. If the dishwasher inner tank 9 is The cross section is square. When the main spray arm 1 rotates to the two opposite side walls that are perpendicular to the dishwasher inner tank 9 and are closer, the force on the reset elastic member 3 is the largest. After the reset elastic member 3 reaches the place where the force is the largest, the main spray arm 1 continues to rotate. At this time, the force on the reset elastic member 3 gradually decreases, and the angle between the auxiliary spray arm 2 and the main spray arm 1 also gradually decreases until the auxiliary spray arm 2 overlaps with the main spray arm 1 again. The main spray arm 1 rotates to the diagonal position of the dishwasher inner tank 9, the reset elastic member 3 is not stressed, and the auxiliary spray arm 2 sprays and washes the corners of the dishwasher inner tank 9. As the main spray arm 1 rotates, the above actions are repeated in sequence.

[0038] When rotating, the end of the auxiliary spray arm 2 contacts the side wall of the dishwasher inner tank 9, spraying the area between the spray range of the main spray arm 1 and the dishwasher inner tank 9 that cannot be sprayed, so as to solve the problem of spraying dead angles;

[0039] There are two auxiliary spray arms 2, and the two auxiliary spray arms 2 are symmetrically arranged about the rotation center of the main spray arm 1. By arranging two symmetrical auxiliary spray arms 2, both ends of the main spray arm 1 bear a considerable weight, so that the main spray arm 1 can rotate smoothly, avoid excessive energy loss, and avoid uneven force on both ends of the main spray arm 1 and aggravated wear;

[0040] The maximum length of the two auxiliary spray arms 2 when they overlap with the main spray arm 1 is less than the diagonal distance of the dishwasher inner tank 9. When the two auxiliary spray arms 2 overlap with the main spray arm 1, the resetting elastic member 3 is not stressed and the length of the entire spray arm reaches the maximum.

[0041] The reset assembly includes a reset elastic member 3, one end of which is connected to the auxiliary spray arm 2, and the other end of which is connected to the main spray arm 1. The reset elastic member 3 is used to reset the auxiliary spray arm 2 and limit the position of the auxiliary spray arm 2. During the rotation process, if the end of the main spray arm 1 is close to the side wall of the dishwasher inner tank 9, the reset elastic member 3 is subjected to a large force. If the main spray arm 1 is rotated to a distance where its end is far from the side wall of the dishwasher inner tank 9, the reset elastic member 3 pulls the auxiliary spray arm 2 to a position where the two overlap, and the force on the reset elastic member 3 is small.

[0042] The rotation center of the auxiliary spray arm 2 is located on one side of the auxiliary spray arm 2 close to the reset assembly. The rotation center of the auxiliary spray arm 2 is located between the symmetrical midpoint of the auxiliary spray arm 2 and the end of the auxiliary spray arm 2. On the one hand, the auxiliary spray arm 2 can be extended to a longer distance outside the main spray arm 1 to obtain a larger cleaning area. On the other hand, since the auxiliary spray arm 2 is set shorter to meet the requirements, the weight of the two auxiliary spray arms 2 can be reduced to avoid the entire spray arm being too heavy and losing too much rotation energy.

[0043] The end of the reset elastic member 3 connected to the auxiliary spray arm 2 is closer to the rotation center of the auxiliary spray arm 2, and the end of the reset elastic member 3 connected to the main spray arm 1 is closer to the rotation center of the main spray arm 1 than the end connected to the auxiliary spray arm 2, which is convenient for installing the reset elastic member 3;

[0044] A roller can be provided at the end of the auxiliary spray arm 2 which is farther from the rotation center of the auxiliary spray arm 2. When the main spray arm 1 rotates, the end of the auxiliary spray arm 2 which contacts the side wall of the inner tank 9 of the dishwasher is provided with the above-mentioned roller, so that the sliding connection between the auxiliary spray arm 2 and the side wall of the inner tank 9 of the dishwasher can be changed into a rolling connection, which can reduce the friction force, reduce the wear amount of the auxiliary spray arm 2 on the side wall of the inner tank 9 of the dishwasher, and make the main spray arm 1 rotate more smoothly;

[0045] The resetting elastic member 3 is a spring, and a coating is provided on the outer wall of the spring. The spring has a simple structure, low cost, and is easy to replace and maintain. Since the use environment of the spray arm makes the spring prone to rust and corrosion, a coating needs to be provided on the spring to protect the spring.

[0046] The elastic force of the spring is reasonably set, so that the auxiliary spray arm 2 can be reset, while avoiding excessive resistance to the rotation of the main spray arm 1 and its own rotation, and avoiding excessive power loss. The setting is specifically based on the water pressure, the size of the spray arm, and the size of the water spray hole 5;

[0047] Hooks can be set at both ends of the spring, a first fixing member 7 is set on the main spray arm 1, and a second fixing member 6 is set on the auxiliary spray arm 2. Holes that match the hooks are correspondingly set on the first fixing member 7 and the second fixing member 6, which is convenient for installation and replacement;

[0048] The water spray hole 5 on the auxiliary spray arm 2 is arranged on a side away from the main spray arm 1. The auxiliary spray arm 2 is arranged so that one end is longer away from the rotation center of the auxiliary spray arm 2 and the other end is shorter away from the rotation center. The longer end of the auxiliary spray arm 2 is used for spraying water to complete cleaning, and the shorter end is used for connecting the reset elastic member 3. The end of the auxiliary spray arm 2 closer to its rotation center will not affect the water sprayed by the main spray arm 1. The water spray hole 5 on the auxiliary spray arm 2 is arranged at the end longer away from its rotation center, which can solve the spray dead angle.

[0049] The main water spray hole 4 on the main spray arm 1 is arranged on the side facing the auxiliary spray arm 2. If the main spray arm 1 is arranged at the bottom of the inner tank 9 of the dishwasher, the main spray arm 1 needs to spray water upward for cleaning, and the auxiliary spray arm 2 is arranged above the main spray arm 1. If the main spray arm 1 is arranged at the top of the inner tank 9 of the dishwasher, the main spray arm 1 needs to spray water downward for cleaning, and the auxiliary spray arm 2 is arranged below the main spray arm 1.

[0050] This embodiment also provides a dishwasher having the dishwasher spray arm structure as described above. By providing the dishwasher spray arm structure, the problem of spray blind spots during washing in the dishwasher can be solved.

[0051] Example 2

[0052] refer to Figure 5 , Figure 6 The spray arm structure of the dishwasher includes a main spray arm 1, a reset assembly and an auxiliary spray arm 2 arranged on the main spray arm 1. The auxiliary spray arm 2 is arranged at the end of the main spray arm 1 and is connected to the internal cavity of the main spray arm 1, so that the water in the main spray arm 1 can enter the auxiliary spray arm 2, and then rinse the area that cannot be cleaned by the main spray arm 1;

[0053] A spray pipe 8 connecting the auxiliary spray arm 2 and the main spray arm 1 is provided between the auxiliary spray arm 2 and the main spray arm 1. The reset component is a reset spring 10. The reset spring 10 is sleeved on the spray pipe 8, one end of which is connected to a first limiter 11 on the spray pipe 8. The first limiter 11 is provided with a first limiter hole matched with the end of the reset spring 10, and the other end is connected to a second limiter 12 provided on the auxiliary spray arm 2. When the auxiliary spray arm 2 rotates from the diagonal position of the dishwasher inner tank 9 to the opposite position, when the auxiliary spray arm 2 rotates relative to the main spray arm 1, the reset spring 10 is stressed, and its end contacts the side wall of the dishwasher inner tank 9. When it rotates from the opposite position of the dishwasher inner tank 9 to the diagonal position of the dishwasher inner tank 9, the force on the reset spring 10 gradually decreases from the maximum to the minimum, and at the same time, the auxiliary spray arm 2 is pulled back to the initial position. With the rotation of the main spray arm 1, the above-mentioned action is repeated until the cleaning is completed.

[0054] The present embodiment also discloses a dishwasher including the above-mentioned dishwasher spray arm structure, which can solve the problem of dead corners in the washing process and has a simple structure. An auxiliary spray arm 2 is provided. While cleaning the dead corners of the main spray arm 1, some water resources can be saved and the resistance to the rotation of the main spray arm 1 can be reduced. By providing a reset spring 10, the overall structure is made more compact.

[0055] Example 3

[0056] refer to Figure 7 , if the maximum length of the two auxiliary spray arms 2 when they overlap with the main spray arm 1 is greater than the diagonal distance of the dishwasher inner tank 9, after the two auxiliary spray arms 2 and the main spray arm 1 are installed, no matter where the main spray arm 1 is in the dishwasher inner tank 9, the end of the auxiliary spray arm 2 is in contact with the side wall of the dishwasher inner tank 9, and the initial position of the reset elastic member 3 can be set to the position where the auxiliary spray arm 2 overlaps with the main spray arm 1, and the reset elastic member 3 is not subjected to force. If the maximum length of the two auxiliary spray arms 2 when they overlap with the main spray arm 1 is greater than the diagonal distance of the dishwasher inner tank 9, then the reset elastic member 3 is not subjected to force at this time;

[0057] The initial position where the resetting elastic member 3 is not subjected to force can also be set at the diagonal position of the main spray arm 1 in the inner tank 9 of the dishwasher. At this time, there is a certain angle between the auxiliary spray arm 2 and the main spray arm 1. The length of the resetting elastic member 3 is set according to the position. When the resetting elastic member 3 is installed at this position, it is not subjected to force. As the main spray arm 1 continues to rotate, the resetting elastic member 3 is subjected to force.

[0058] This embodiment also discloses a dishwasher, which includes the above-mentioned dishwasher spray arm structure, can solve the problem of dead corners in dishwasher cleaning, and has a simple and reliable structure.

[0059] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. A dishwasher spray arm structure, characterized in that: include: A main spray arm, the main spray arm is rotatably connected to the end of the spray pipe; A rotary reset spray assembly for spraying outside the spraying area of ​​the main spray arm; The rotary reset spray assembly comprises: At least one auxiliary spray arm, the auxiliary spray arm is rotatably connected to the main spray arm and communicates with the cavity of the main spray arm; A reset component, the reset component is arranged between the main spray arm and the auxiliary spray arm; The reset assembly includes a reset elastic member, which is a spring. Hooks are arranged at both ends of the spring. A first fixing member is arranged on the main spray arm, and a second fixing member is arranged on the auxiliary spray arm. Holes matching with the hooks are arranged on the first fixing member and the second fixing member respectively.

2. A dishwasher spray arm structure according to claim 1, characterized in that: The number of the auxiliary spray arms is two, and the two auxiliary spray arms are symmetrically arranged about the rotation center of the main spray arm.

3. A dishwasher spray arm structure according to claim 2, characterized in that: The two auxiliary spray arms are arranged at both ends of the main spray arm.

4. A dishwasher spray arm structure according to claim 3, characterized in that: The maximum length of the two auxiliary spray arms when they overlap with the main spray arm is less than the distance between the diagonals of the inner tank of the dishwasher.

5. A dishwasher spray arm structure according to claim 1, characterized in that: The reset assembly comprises a reset elastic member, one end of the reset elastic member is connected to the auxiliary spray arm, and the other end of the reset elastic member is connected to the main spray arm.

6. A dishwasher spray arm structure according to claim 5, characterized in that: The rotation center of the auxiliary spray arm is located on one side of the auxiliary spray arm close to the reset component.

7. A dishwasher spray arm structure according to claim 1, characterized in that: The reset component is a spring, and a coating is arranged on the outer side wall of the spring.

8. The spray arm structure of a dishwasher according to claim 1, characterized in that: The water spray hole on the auxiliary spray arm is arranged on a side away from the main spray arm, and the main water spray hole on the main spray arm is arranged on a side facing the auxiliary spray arm.

9. A dishwasher, characterized in that: The dishwasher spray arm structure has a structure as claimed in any one of claims 1 to 8.

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