Dish-washing machine spraying arm capable of spraying in forward and reverse rotation mode and dish-washing machine

Abstract

The utility model discloses a dish-washing machine spraying arm capable of spraying in a forward and reverse rotation mode and a dish-washing machine, and belongs to the technical field of washing devices. The dish-washing machine spraying arm comprises a spraying water pipe, a first spraying arm and a second spraying arm, wherein the first spraying arm and the second spraying arm are communicated with the spraying water pipe; the first spraying arm is rotationally connected with the spraying water pipe, and a first spraying hole is formed in the first spraying arm; the second spraying arm is rotationally connected with the first spraying arm, and second spraying holes are formed in the second spraying arm; and the rotating centers of the first spraying arm and the second spraying arm are positioned at the end parts. By arranging the first spraying arm and the second spraying arm with the ends as the rotating centers, the overlapping area of the spraying arms during rotation is smaller, meanwhile, the rotating size and mass are small, the needed water pressure is small, and cost is low; in addition, multi-angle spraying is conducted in the washing cavity of the dish-washing machine, dead-corner-free cleaning is effectively achieved, and the more efficient spraying and cleaning effect of the dish-washing machine is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of washing devices, in particular to a dishwasher spray arm capable of forward and reverse spraying and a dishwasher. Background Art

[0002] In the prior art, a patent with publication number CN113520263A discloses a dishwasher spray arm and a dishwasher, wherein a distributor is used to alternately distribute the water flow flowing into the distribution chamber to the first spray arm and the second spray arm, so that the spray arm can rotate alternately forward and reverse so that the washing chamber of the dishwasher is sprayed at multiple angles, effectively achieving cleaning without dead angles and realizing a more efficient spray cleaning effect of the dishwasher.

[0003] However, it has the following disadvantages: the forward and reverse rotation is achieved by setting up structures such as a distributor, which has a relatively complex structure and high cost; in addition, when alternating between forward and reverse rotation, a part of the force that pushes the spray arm to rotate has to offset the force of reverse rotation, consuming water resources and wasting the kinetic energy of water.

[0004] In the prior art, there is also a dishwasher with two spray arms arranged at the bottom of the inner tank of the dishwasher. The two spray arms are arranged one high and one low in the up and down directions to ensure that the two spray arms do not interfere with each other when rotating and can operate normally. By setting up two spray arms, a greater water pressure needs to be provided, more electricity needs to be consumed, and the washing pump needs a greater power, which is costly. In addition, the rotating areas of the two overlap with each other. When washing, the dishes in the overlapping area are washed twice as long as those in other areas, resulting in a waste of washing water resources. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a dishwasher spray arm capable of forward and reverse spraying and a dishwasher, so as to solve the problem raised in the background technology.

[0006] In order to solve the above technical problems, the technical solution of the utility model is:

[0007] A dishwasher spray arm capable of spraying in a forward and reverse direction, characterized by comprising:

[0008] A spray water pipe, a first spray arm and a second spray arm connected to the spray water pipe;

[0009] The first spray arm is rotatably connected to the spray water pipe, and a first spray hole is provided on the first spray arm;

[0010] The second spray arm is rotatably connected to the first spray arm, and a second spray hole is provided on the second spray arm;

[0011] The rotation centers of the first spray arm and the second spray arm are both located at their ends.

[0012] Preferably, the first spray hole is used to push the first spray arm to rotate, and the second spray hole is used to push the second spray arm to rotate, and the rotation direction of the second spray arm is opposite to the rotation direction of the first spray arm.

[0013] Preferably, the first spray hole and the second spray hole are both arranged obliquely, and the opening directions of the first spray hole and the second spray hole are opposite.

[0014] Preferably, it further comprises a first balancing block, wherein the first balancing block is arranged at an end of the first spray arm close to one end of the rotation center thereof.

[0015] Preferably, the highest point of the top of the first balancing block is located between the first spray arm and the second spray arm.

[0016] Preferably, the sum of the weight of the first balancing block and the shorter end of the first spray arm is equal to the sum of the weight of the longer end of the first spray arm and the weight of the first spray arm when it is filled with water.

[0017] Preferably, it further comprises a second balancing block, wherein the second balancing block is arranged at an end of the second spray arm close to one end of the rotation center thereof.

[0018] Preferably, the height of the highest point on the upper side of the second balancing block is lower than the highest point on the upper side of the second spray arm, and the lowest point on the lower side of the second balancing block is located between the highest point of the first spray arm and the second spray arm.

[0019] Preferably, the sum of the weight of the second balancing block and the shorter end of the second spray arm is equal to the sum of the weight of the longer end of the second spray arm and the weight of the longer end of the second spray arm when it is filled with water.

[0020] Preferably, the dishwasher spray arm is provided in the washing cavity.

[0021] The above technical solution has the following beneficial effects:

[0022] By arranging the first spray arm and the second spray arm with the end portion as the rotation center, the first spray arm and the second spray arm extend outward from the spray water pipe. Compared with the prior art that takes the central section as the rotation center, the utility model can reduce the volume and weight of the first spray arm and the second spray arm, thereby reducing the water pressure that drives the first spray arm and the second spray arm to rotate and reducing the power consumption; in addition, the overlapping area of ​​the first spray arm and the second spray arm will also be halved, effectively reducing the waste of water resources while ensuring the washing effect.

[0023] By setting the first spray hole and the second spray hole, the first spray arm and the second spray arm rotate in opposite directions, and the washing cavity of the dishwasher is sprayed at multiple angles, effectively achieving no dead angle cleaning and achieving a more efficient spray cleaning effect of the dishwasher. In addition, since the first spray hole and the second spray hole are arranged obliquely, when the first spray arm and the second spray arm overlap, the washing positions can be better staggered, thereby further reducing the overlapping area.

[0024] By providing the first balancing block and the second balancing block, and configuring the weight of the components, the first spray arm and the second spray arm can rotate more smoothly. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 The utility model is a structural schematic diagram of a spray arm of a dishwasher capable of forward and reverse spraying.

[0026] Explanation of the accompanying drawings: 1. first spray arm; 2. second spray arm; 3. spray water pipe; 4. second balancing block; 5. first balancing block. DETAILED DESCRIPTION

[0027] The present application is further described below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments are only specific descriptions of the present application, and their purpose is to allow those skilled in the art to better understand the technical solution of the present application, and should not be regarded as limiting the present application.

[0028] In the description of the present application, it should be noted that the orientations or positional relationships indicated by terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", and "outside" are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0029] refer to Figure 1 , a dishwasher spray arm capable of spraying in a forward and reverse direction, comprising:

[0030] A dishwasher spray arm capable of spraying in a forward and reverse direction, characterized in that it comprises: a spray water pipe 3, a first spray arm 1 and a second spray arm 2 connected to the spray water pipe 3; the first spray arm 1 is rotatably connected to the spray water pipe 3, and a first spray hole (not shown in the figure) is arranged on the first spray arm 1; the second spray arm 2 is rotatably connected to the first spray arm 1, and a second spray hole (not shown in the figure) is arranged on the second spray arm 2; the rotation centers of the first spray arm 1 and the second spray arm 2 are both located at their ends. In this way, the first spray arm 1 and the second spray arm 2 are half arms extending outward from the spray water pipe 3. Compared with the prior art in which the center section is the rotation center, the utility model can reduce the volume and weight of the first spray arm 1 and the second spray arm 2, thereby reducing the water pressure driving the first spray arm 1 and the second spray arm 2 to rotate and reducing the power consumption; in addition, the overlapping area of ​​the first spray arm 1 and the second spray arm 2 will also be halved, effectively reducing the waste of water resources while ensuring the washing effect.

[0031] Specifically, the first spray arm 1 is arranged below the second spray arm 2, and a cavity is provided inside the first spray arm 1 and the second spray arm 2, and the cavity is connected to the spray water pipe 3, the first spray hole is arranged at the top of the first spray arm 1, and the second spray hole is arranged at the top of the second spray arm 2, the first spray hole and the second spray hole are both arranged obliquely, and the opening directions of the first spray hole and the second spray hole are opposite. When high-pressure water is sprayed from the first spray hole and the second spray hole, the water pressure drives the first spray arm 1 to rotate, and the second spray hole is used to drive the second spray arm 2 to rotate, and the direction of rotation of the second spray arm 2 is opposite to that of the first spray arm 1. When the first spray arm 1 and the second spray arm 2 overlap, the washing positions can also be better staggered, thereby further reducing the overlapping area.

[0032] The dishwasher spray arm further comprises a first balancing weight 5 and a second balancing weight 4. The first balancing weight 5 is arranged at an end of the first spray arm 1 close to one end of its rotation center, and the second balancing weight 4 is arranged at an end of the second spray arm 2 close to one end of its rotation center. The first balancing weight 5 is used to balance the first spray arm 1 so that the first spray arm 1 rotates in one plane.

[0033] The highest point of the top of the first balancing block 5 is located between the first spray arm 1 and the second spray arm 2. When both the first spray arm 1 and the second spray arm 2 rotate, the first balancing block 5 will not interfere with the second spray arm 2, and both can rotate normally. The sum of the weight of the first balancing block 5 and the shorter end of the first spray arm 1 is equal to the sum of the weight of the longer end of the first spray arm 1 and the weight of the first spray arm 1 when it is filled with water.

[0034] The highest point of the upper side of the second balancing block 4 is lower than the highest point of the upper side of the second spray arm 2, and the lowest point of the lower side of the second balancing block 4 is located between the highest point of the first spray arm 1 and the second spray arm 2. Since a bowl basket is arranged above the second spray arm 2, if the height of the second balancing block 4 is higher than the second spray arm 2, it will affect the placement of the bowl basket and make the space of the entire dishwasher smaller. Therefore, the highest point of the second balancing block 4 needs to be lower than the highest point of the second spray arm 2, and the lowest point of the bottom of the second balancing block 4 is located between the highest point of the first spray arm 1 and the second spray arm 2, so that the second spray arm 2 can rotate normally without interfering with the first spray arm 1.

[0035] The sum of the weight of the second balancing weight 4 and the shorter end of the second spray arm 2 is equal to the sum of the weight of the longer end of the second spray arm 2 and the weight of the longer end of the second spray arm 2 when it is filled with water. By adjusting the weight on both sides of the rotation center of the first spray arm 1 and the weight on both sides of the rotation center of the second spray arm 2, the rotation stability of the first spray arm 1 and the second spray arm 2 can be improved.

[0036] By arranging the first spray arm 1 and the second spray arm 2 with opposite rotation directions, the washing chamber of the dishwasher is sprayed at multiple angles, effectively achieving cleaning without dead angles and realizing a more efficient spray cleaning effect of the dishwasher.

[0037] 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 capable of spraying in a forward and reverse direction, characterized in that: include: A spray water pipe, a first spray arm and a second spray arm connected to the spray water pipe; The first spray arm is rotatably connected to the spray water pipe, and a first spray hole is provided on the first spray arm; The second spray arm is rotatably connected to the first spray arm, and a second spray hole is provided on the second spray arm; The rotation centers of the first spray arm and the second spray arm are both located at their ends.

2. A dishwasher spray arm capable of forward and reverse spraying according to claim 1, characterized in that: The first spray hole is used to push the first spray arm to rotate, and the second spray hole is used to push the second spray arm to rotate. The rotation direction of the second spray arm is opposite to the rotation direction of the first spray arm.

3. A dishwasher spray arm capable of forward and reverse spraying according to claim 2, characterized in that: The first spray hole and the second spray hole are both inclined, and the opening directions of the first spray hole and the second spray hole are opposite.

4. A dishwasher spray arm capable of forward and reverse spraying according to claim 1, characterized in that: It also includes a first balancing block, which is arranged at the end of the first spray arm close to one end of the rotation center.

5. A dishwasher spray arm capable of forward and reverse spraying according to claim 4, characterized in that: The highest point of the top of the first balancing block is located between the first spray arm and the second spray arm.

6. A dishwasher spray arm capable of forward and reverse spraying according to claim 4, characterized in that: The sum of the weight of the first balancing block and the shorter end of the first spray arm is equal to the sum of the weight of the longer end of the first spray arm and the weight of the first spray arm when it is filled with water.

7. A dishwasher spray arm capable of forward and reverse spraying according to any one of claims 1 to 3, characterized in that: It also includes a second balancing block, which is arranged at the end of the second spray arm close to one end of the rotation center.

8. The dishwasher spray arm capable of forward and reverse spraying according to claim 7, characterized in that: The height of the highest point on the upper side of the second balancing block is lower than the highest point on the upper side of the second spray arm, and the lowest point on the lower side of the second balancing block is located between the highest point of the first spray arm and the second spray arm.

9. A dishwasher spray arm capable of forward and reverse spraying according to claim 8, characterized in that: The sum of the weight of the second balancing block and the shorter end of the second spray arm is equal to the sum of the weight of the longer end of the second spray arm and the weight of the longer end of the second spray arm when it is filled with water.

10. A dishwasher comprising a washing chamber, characterized in that: A dishwasher spray arm as claimed in any one of claims 1 to 9 is arranged in the washing chamber.

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