Spraying arm structure of dish washing machine

Abstract

The utility model relates to the technical field of dish-washing machines, in particular to a spraying arm structure of a dish-washing machine, which comprises a spraying arm body, a water cavity is arranged inside the spraying arm body, a water inlet is fixedly connected to the middle of the upper end of the spraying arm body, a plurality of groups of water nozzles are fixedly connected to the lower end of the spraying arm body, and the water inlet and the water nozzles are communicated with the water cavity. A baffle is slidably mounted in the water cavity and abuts against the bottom of the water cavity, fixing blocks are fixedly connected to the two ends of the baffle, the two fixing blocks abut against the top of the water cavity, the baffle is matched with the water nozzle in a shielding mode, and driving assemblies used for driving the baffle to slide are arranged at the two ends of the spraying arm body. The driving assembly pushes the baffle to slide, so that the baffle blocks part of the water nozzles, the water pressure of water sprayed out of other water nozzles is increased, and therefore the water outlet pressure and the water outlet amount of the water nozzles are adjusted according to the working procedures of the dish washing machine and the stain condition of tableware.

Description

Technical Field

[0001] This utility model relates to the field of dishwashers, specifically a spray arm structure for a dishwasher. Background Technology

[0002] A dishwasher is a device that replaces manual washing of dishes. The dishes are cleaned and dried by spraying water, dissolving detergent, and high-temperature drying. The dishwasher is equipped with a spray arm on top, which sprays water onto the dishes.

[0003] Existing dishwasher spray arm structures include, for example, a spray arm and dishwasher with the mechanism proposed in patent application number "CN201820127818.3". The outer wall of the spray arm is provided with several locking holes and a cover plug that seals the locking holes. The cover plug includes a cover body and a screw-on end and a locking end provided on the cover body. The locking end extends into the locking hole and can lock with the locking hole. The screw-on end is exposed outside the locking hole. The locking holes can be opened and closed by manually screwing the cover plug, which facilitates the user's cleaning of the spray arm.

[0004] However, existing technology has defects. The water outlets on the spray arm cannot be controlled, and the water pressure and flow rate of the water outlets cannot be adjusted according to the washing steps. As a result, the water from the spray arm cannot rinse away stubborn impurities on the dishes, nor can it save water. Therefore, a spray arm structure for a dishwasher is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a spray arm structure for a dishwasher to solve the problems mentioned in the background art.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] A spray arm structure for a dishwasher includes a spray arm body, a water cavity is provided inside the spray arm body, a water inlet is fixedly connected to the middle of the upper end of the spray arm body, and multiple sets of water nozzles are fixedly connected to the lower end of the spray arm body. The water inlet and the water nozzles are all connected to the water cavity.

[0008] A baffle is slidably installed inside the water cavity, abutting against the bottom of the water cavity. Fixing blocks are fixed to both ends of the baffle, and both sets of fixing blocks abut against the top of the water cavity. The baffle cooperates with the water nozzle to block it. Both ends of the spray arm body are provided with drive components for driving the baffle to slide.

[0009] Preferably, the multiple sets of water nozzles spray water in different directions, the multiple sets of water nozzles are divided into two rows, and a baffle is located between the two rows of water nozzles, with the baffle sealing and cooperating with one of the water nozzles.

[0010] Preferably, the drive assembly includes a bracket, which is fixed to the upper end of the spray arm assembly. A servo motor is fixed inside the bracket, and a cam is fixed to the output end of the servo motor. The cam is rotatably installed inside the water chamber, and the end of the cam is pressed against a fixed block.

[0011] A spring is fixed to the side of the fixed block away from the cam. The end of the spring is fixed to the inner wall of the water cavity. The spring is in a compressed state and is used to drive the baffle to reset.

[0012] Preferably, an inlet pipe is rotatably installed at the end of the inlet, a ring is fixedly connected to the end of the inlet, and a circular frame is fixedly connected to the end of the inlet pipe near the inlet, with the circular frame and the ring being rotatably installed.

[0013] Preferably, a cylinder is inserted into the water inlet, with one end of the cylinder located inside the water cavity. Filter holes are provided on the side wall and bottom of the cylinder, and a screw is threaded between the upper end of the cylinder and the inner wall of the water inlet.

[0014] Preferably, an outer ring is rotatably installed on the outer wall of the water inlet, and multiple sets of fixing plates are fixedly connected to the upper end of the outer ring. A fixing frame is fixedly connected to the upper end of the multiple sets of fixing plates, and the fixing frame is fixedly connected to the top of the dishwasher.

[0015] The beneficial effects of this utility model are:

[0016] This invention installs a baffle and a drive assembly on the spray arm body. The drive assembly operates and pushes the baffle to slide, causing the baffle to block some of the water nozzles. This increases the water pressure of the water sprayed from the other water nozzles, thereby adjusting the water pressure and flow rate of the water nozzles according to the dishwasher's processes and the degree of soiling on the tableware. The higher water pressure washes away stubborn impurities on the tableware and also saves water according to the processes. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the bottom structure of the spray arm body of this utility model;

[0020] Figure 3 This is a schematic diagram of the internal structure of the water cavity of this utility model;

[0021] Figure 4 This is a schematic cross-sectional view of the spray arm body of this utility model;

[0022] Figure 5 yes Figure 4 Enlarged schematic diagram of the structure at point A;

[0023] The attached figures are labeled as follows:

[0024] 1. Spray arm body; 2. Water inlet; 3. Water inlet pipe; 4. Ring; 5. Frame; 6. Cylinder; 7. Filter hole; 8. Screw; 9. Outer ring; 10. Fixing plate; 11. Fixing bracket; 12. Water chamber; 13. Water nozzle; 14. Baffle; 15. Fixing block; 16. Spring; 17. Cam; 18. Servo motor; 19. Bracket. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0026] A spray arm structure for a dishwasher, such as Figures 1-5 As shown, the device includes a spray arm body 1, which is installed on the top of the inner wall of the dishwasher. The spray arm body 1 has a water cavity 12 inside. A water inlet 2 is fixedly connected to the middle of the upper end of the spray arm body 1, and multiple sets of water nozzles 13 are fixedly connected to the lower end of the spray arm body 1. Both the water inlet 2 and the water nozzles 13 are connected to the water cavity 12. Water enters the water cavity 12 through the water inlet 2 and is sprayed out from the multiple sets of water nozzles 13.

[0027] A baffle 14 is slidably installed inside the water cavity 12. The width of the baffle 14 is greater than the diameter of the water nozzle 13. The baffle 14 abuts against the bottom of the water cavity 12. Fixing blocks 15 are fixed to both ends of the baffle 14. Both sets of fixing blocks 15 abut against the top of the water cavity 12. The two sets of fixing blocks 15 abut against both ends of the water cavity 12, so that the baffle 14 and the fixing blocks 15 can only slide inside the water cavity 12. The baffle 14 and the water nozzle 13 cooperate to block each other. Both ends of the spray arm body 1 are provided with driving components for driving the baffle 14 to slide.

[0028] By installing a baffle 14 inside the water chamber 12 of the spray arm body 1 and installing drive components at both ends of the spray arm body 1, the drive components operate and push the baffle 14 to slide, causing the baffle 14 to block part of the water nozzles 13. The number of water nozzles 13 is reduced, which increases the water pressure of the water sprayed from the unblocked water nozzles 13. Thus, the water pressure and water volume of the water nozzles 13 are adjusted according to the dishwasher's process and the degree of stains on the tableware. The water flow with higher pressure is more effective at washing away stubborn impurities on the tableware than the water flow with lower pressure. It can also automatically adjust the water volume according to the process, saving water.

[0029] like Figure 2 As shown, the multiple sets of water nozzles 13 spray water in different directions. The multiple sets of water nozzles 13 are divided into two rows. The baffle 14 is located between the two rows of water nozzles 13 and is sealed and cooperated with one of the water nozzles 13.

[0030] The multiple sets of water nozzles 13 are in two directions, with the number of water nozzles 13 in one direction being greater than the number of water nozzles 13 in the other direction, so that the tilting of the water nozzles 13 will push the spray arm body 1 to rotate.

[0031] like Figure 1 , Figure 3 As shown, the drive assembly includes a bracket 19, which is fixed to the upper end of the spray arm assembly. A servo motor 18 (model F260) is fixed inside the bracket 19. A cam 17 is fixed to the output end of the servo motor 18. The cam 17 is rotatably installed inside the water chamber 12. The end of the cam 17 is pressed against the fixing block 15. When the servo motor 18 runs, the output end drives the cam 17 to rotate, so that the end of the cam 17 presses against the fixing block 15 at the end of the baffle 14, pushing the baffle 14 to slide, so that the baffle 14 blocks one of the drain nozzles 13.

[0032] A spring 16 is fixedly connected to the side of the fixed block 15 away from the cam 17. The end of the spring 16 is fixedly connected to the inner wall of the water cavity 12. The spring 16 is in a compressed state and is used to drive the baffle 14 to reset.

[0033] When the blocking cam 17 presses against the fixing block 15, it causes the baffle 14 to slide, which increases the compression of the spring 16. When the blocking cam 17 reverses, the end of the cam 17 disengages from the fixing block 15, and the spring 16 presses against the fixing block 15, causing the fixing block 15 to return to its position and no longer block the water nozzle 13.

[0034] like Figure 1 , Figure 4 , Figure 5 As shown, a water inlet pipe 3 is rotatably installed at the end of the water inlet 2, and a ring 4 is fixedly connected to the end of the water inlet 2. A circular frame 5 is fixedly connected to the end of the water inlet pipe 3 near the water inlet 2. The circular frame 5 and the circular ring 4 are rotatably installed.

[0035] The ring 4 rotates inside the circular frame 5, and the water inlet 2 rotates relative to the water inlet pipe 3.

[0036] like Figure 5 As shown, a cylinder 6 is inserted into the water inlet 2. One end of the cylinder 6 is located in the water cavity 12. Filter holes 7 are provided on the side wall and bottom of the cylinder 6. Screws 8 are threaded between the upper end of the cylinder 6 and the inner wall of the water inlet 2.

[0037] The cylinder 6 is installed inside the spray arm body 1. Water passes through the filter holes 7 on the cylinder 6 to prevent impurities in the water from entering the water chamber 12. The screw 8 fixes the cylinder 6 inside the water inlet 2.

[0038] like Figure 1 As shown, an outer ring 9 is rotatably installed on the outer wall of the water inlet 2. Multiple sets of fixing plates 10 are fixedly connected to the upper end of the outer ring 9. A fixing frame 11 is fixedly connected to the upper end of the multiple sets of fixing plates 10. The fixing frame 11 is fixedly connected to the top of the dishwasher.

[0039] The mounting bracket 11 is installed on the top of the inner wall of the dishwasher, suspending the spray arm body 1 inside the dishwasher. The outer ring 9 will not affect the rotation of the spray arm body 1.

[0040] The working principle of the spray arm structure of the dishwasher provided by this utility model is as follows:

[0041] Water is supplied to the water chamber 12 through the water inlet pipe 3 and the water inlet 2. When it is necessary to change the water pressure or water flow of the water nozzle 13, the drive component operates and pushes the baffle 14 to slide, causing the baffle 14 to block part of the water nozzle 13. The number of water nozzles 13 decreases, which increases the water pressure of the water sprayed from the unblocked water nozzles 13. Thus, the water pressure and water flow of the water nozzle 13 are adjusted according to the dishwasher's process and the degree of stains on the tableware. The water flow with higher pressure is more effective at washing away stubborn impurities on the tableware than the water flow with lower pressure. It can also automatically adjust the water flow according to the process, saving water.

[0042] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A spray arm structure for a dishwasher, comprising a spray arm body (1), characterized in that, The spray arm body (1) has a water cavity (12) inside. A water inlet (2) is fixedly connected to the middle of the upper end of the spray arm body (1). Multiple sets of water nozzles (13) are fixedly connected to the lower end of the spray arm body (1). The water inlet (2) and the water nozzles (13) are both connected to the water cavity (12). A baffle (14) is slidably installed inside the water cavity (12). The baffle (14) abuts against the bottom of the water cavity (12). Fixing blocks (15) are fixed at both ends of the baffle (14). Both sets of fixing blocks (15) abut against the top of the water cavity (12). The baffle (14) and the water nozzle (13) cooperate to block each other. Both ends of the spray arm body (1) are provided with driving components for driving the baffle (14) to slide.

2. The spray arm structure of a dishwasher according to claim 1, characterized in that, The multiple sets of water nozzles (13) spray water in different directions. The multiple sets of water nozzles (13) are divided into two rows. The baffle (14) is located between the two rows of water nozzles (13). The baffle (14) is in a blocking cooperation with one of the water nozzles (13).

3. The spray arm structure of a dishwasher according to claim 1, characterized in that, The drive assembly includes a bracket (19), which is fixed to the upper end of the spray arm assembly. A servo motor (18) is fixed inside the bracket (19), and a cam (17) is fixed to the output end of the servo motor (18). The cam (17) is rotatably installed inside the water cavity (12), and the end of the cam (17) is pressed against the fixing block (15). A spring (16) is fixedly connected to the side of the fixed block (15) away from the cam (17). The end of the spring (16) is fixedly connected to the inner wall of the water cavity (12). The spring (16) is in a compressed state and is used to drive the baffle (14) to reset.

4. The spray arm structure of a dishwasher according to claim 1, characterized in that, The inlet (2) is rotatably mounted with an inlet pipe (3), and a ring (4) is fixedly connected to the end of the inlet (2). A circular frame (5) is fixedly connected to one end of the inlet pipe (3) near the inlet (2). The circular frame (5) and the ring (4) are rotatably mounted.

5. The spray arm structure of a dishwasher according to claim 4, characterized in that, A cylinder (6) is inserted into the inlet (2). One end of the cylinder (6) is located in the water cavity (12). Filter holes (7) are provided on the side wall and bottom of the cylinder (6). Screws (8) are threaded between the upper end of the cylinder (6) and the inner wall of the inlet (2).

6. The spray arm structure of a dishwasher according to claim 4, characterized in that, The outer wall of the water inlet (2) is rotatably mounted with an outer ring (9). Multiple sets of fixing plates (10) are fixedly connected to the upper end of the outer ring (9). A fixing frame (11) is fixedly connected to the upper end of the multiple sets of fixing plates (10). The fixing frame (11) is fixedly connected to the top of the dishwasher.

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