A dishwasher with an adjustable angle spray arm

Abstract

The application discloses a dish-washing machine with an adjustable-angle spraying cleaning arm, and aims at solving the problem of low cleaning efficiency caused by the fixed cleaning angle of the spraying mechanism of the existing dish-washing machine. The transmission mechanism of the application drives the rotating plate to rotate through the transmission mechanism of different shafts, the rotating plate drives the retainer to rotate through the connecting cylinder, the two ends of the retainer are symmetrically provided with sliding seats on the inner sides, the liquid distribution pipes are slidably arranged on the sliding seats, a plurality of nozzles are symmetrically arranged on the opposite surfaces of the two groups of liquid distribution pipes, one end of the sliding seat is hingedly connected to the top end of the telescopic mechanism arranged on the rotating plate, the sliding seat is inserted between the cylindrical frame body and the inner wall of the cleaning chamber at different elevations by controlling the telescopic mechanism, the function of adjusting the spraying angle is realized, the spraying coverage is adjusted by controlling the telescopic liquid distribution pipe, the spraying can be rotated by 360 degrees without dead angle, the kinetic energy loss of the washing liquid sprayed into the gap of the concave tableware is reduced, and the number of nozzles is saved compared with the traditional fixed spraying flushing.

Description

Technical Field

[0001] This invention relates to the field of dishwasher technology, and more specifically to a dishwasher with an adjustable-angle spray cleaning arm. Background Technology

[0002] With the development of society, the variety of household kitchen appliances is increasing along with the demand, especially dishwashers, which have developed and been applied rapidly. More and more families are purchasing dishwashers. Currently, dishwashers are generally built into integrated stoves, which saves space and looks beautiful.

[0003] Meanwhile, existing dishwashers mainly use a spray mechanism installed in the cleaning chamber, with a drive control mechanism installed on one side of the chamber. This mechanism includes a motor, washing pump, drain pump, program controller, pressure switch, solenoid valve, heater, etc. The drive control mechanism circulates the washing liquid to the spray mechanism to rinse the dishes in the cleaning chamber. The existing spray mechanism mainly uses multiple sets of nozzles symmetrically installed at the top and bottom to rinse the dishes located on the middle shelf. However, this method is not effective for rinsing dishes with deep concave surfaces. The reason is that when the washing liquid enters the concave surface through the gaps between the dishes, the angle is vertical, which reduces the impact kinetic energy of the washing liquid and reduces the cleaning efficiency of residual food and grease on the concave surface of the dishes.

[0004] To address the aforementioned problems, this invention proposes a dishwasher with an adjustable-angle spray cleaning arm. Summary of the Invention

[0005] In view of the problems mentioned above, the purpose of this invention is to provide a dishwasher with an adjustable angle spray cleaning arm, which systematically solves the problem of low cleaning efficiency caused by the fixed cleaning angle of the existing dishwasher spray mechanism mentioned in the background art.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0007] A dishwasher with an adjustable angle spray cleaning arm includes a cleaning tank, a base, and an equipment box. The cleaning tank is installed on top of the base, and the equipment box is installed on the back side of the base. The equipment box is equipped with a drive control mechanism for supplying and draining liquid. The cleaning tank is provided with a horizontal columnar cleaning chamber. A rotating mechanism with a different shaft drive is installed on the back plate of the cleaning chamber. The driven gear ring of the rotating mechanism is connected to the middle of the rotating plate.

[0008] The rotating plate is connected in the middle to the frame-shaped retainer via a connecting cylinder;

[0009] The cage is symmetrically equipped with rotatable sliding seats on its upper and lower sides, and one end of the sliding seat is hinged to the top of the telescopic mechanism mounted on the rotating plate.

[0010] A liquid dispersing pipe is slidably mounted on the sliding seat, and multiple nozzles are mounted on the liquid dispersing pipe;

[0011] The first liquid supply pipe output by the drive control mechanism is connected to a rotary joint, the rotary joint passes through the driven toothed ring and is connected to a connecting cylinder, the connecting cylinder is connected to a second liquid supply pipe laid on the retainer, and the hose is connected to the injection joint of the dispensing pipe.

[0012] The cleaning chamber is connected to the liquid collection tank at the bottom, and one side of the liquid collection tank is connected to the drive control mechanism through a return pipe;

[0013] The cleaning chamber contains a cylindrical rack for holding tableware, and a sliding seat is inserted between the rack and the cleaning chamber.

[0014] Furthermore, the rotating mechanism includes a servo motor, a gear, and a driven gear ring. A figure-eight shaped transmission seat is installed on the back plate of the cleaning chamber. The transmission seat is equipped with a meshing gear and a driven gear ring. One end of the gear is connected to the output end of the servo motor. The servo motor is installed on the back plate of the cleaning chamber. One end of the driven gear ring extends through the transmission seat and the back plate of the cleaning chamber, and the other end extends through the sleeve and is installed in the middle of the rotating plate. The rotating joint is installed inside the driven gear ring, and one end of the rotating joint extends through the rotating plate and is inserted into the connecting cylinder.

[0015] Furthermore, plugs are symmetrically installed on the upper and lower inner sides of the retainer, and limiting grooves are symmetrically provided on both sides of the sliding seat to slide and be engaged with the plugs on both sides.

[0016] Furthermore, the rotating plate is provided with an outward-facing groove, and a telescopic mechanism is installed in the groove. The telescopic mechanism is a first electric telescopic component, and the inner end of the sliding seat is hinged to the top of the first electric telescopic component.

[0017] Furthermore, the sliding seat is provided with a telescopic groove with an opening facing outwards, the top of the sliding seat is provided with an upper sliding groove, a second electric telescopic component is installed on the top of the sliding seat, the dispensing pipe is slidably installed in the telescopic groove, a connecting block is installed above the dispensing pipe that penetrates the upper sliding groove, the movable end of the second electric telescopic component is connected to one side of the connecting block, the bottom of the sliding seat is provided with a supply pipe groove and a spray nozzle from the inside out, a plurality of nozzles are installed at the bottom of the dispensing pipe above the spray nozzle, and an injection connector is provided at the bottom of the inner side of the dispensing pipe that penetrates the supply pipe groove, the injection connector being connected to the second supply pipe for supplying liquid.

[0018] Furthermore, the second supply tube is mounted on the retainer via multiple clamps.

[0019] Furthermore, the drive control mechanism includes an electric motor, a washing pump, a drain pump, a programmable controller, a pressure switch, a solenoid valve, a heater, etc.

[0020] Furthermore, the bottom of the cleaning chamber is connected to the liquid collection tank on the base through a through groove. A filter screen can be placed in the liquid collection tank according to usage requirements. Multiple slots are recessed at the front end of the cleaning chamber, and the frame is inserted into the multiple slots.

[0021] Furthermore, the frame includes multiple symmetrically arranged shelves, which are positioned by multiple annular hoops. Multiple L-shaped inserts are installed on the hoop at the front end. One side of each insert is radially to the cylindrical frame and the other side is axially to the cylindrical frame. The frame is inserted into the cleaning chamber through the multiple inserts. A door panel is rotatably installed at the front end of the cleaning chamber.

[0022] Furthermore, the two sets of inserts located at the bottom front end are fitted with arc-shaped baffles that fit against the bottom of the cleaning chamber.

[0023] Compared with the prior art, the present invention has the following advantages:

[0024] (1) In this invention, a transmission mechanism with an off-axis drive is installed on the back plate inside the cleaning chamber. The driven gear ring included in the transmission mechanism drives the rotating plate to rotate in the columnar cleaning chamber. The middle part of the rotating plate is connected to the middle part of a frame-shaped retainer through a connecting cylinder. Sliding seats are symmetrically installed on the inner sides of both ends of the retainer. A spray pipe is slidably installed on the sliding seat. Multiple nozzles are symmetrically arranged on the facing surfaces of the two sets of spray pipes. One end of the sliding seat is hinged to the top of the telescopic mechanism installed on the rotating plate. By controlling the telescopic mechanism, the sliding seat is pulled to insert at different elevation angles. The cylindrical frame and the inner wall of the cleaning chamber allow for adjustable spray angles. The spray coverage is adjusted by controlling the extension and retraction of the dispensing pipe. A transmission mechanism drives the rotating plate, connecting cylinder, retainer, and upper and lower sliding seats to rotate, achieving 360-degree spraying without blind spots. This adjustable spray angle, coverage, and 360-degree spraying significantly reduce the kinetic energy loss of detergent entering the crevices of concave tableware, improving the efficiency of spray washing. Compared to traditional fixed installations, the rotary design reduces the number of spray heads required.

[0025] (2) The rotating mechanism in this invention includes a servo motor, a gear and a driven gear ring. A figure-eight shaped transmission seat is installed on the back plate of the cleaning chamber. The transmission seat is equipped with a meshing gear and a driven gear ring. One end of the driven gear ring extends through the transmission seat and the back plate of the cleaning chamber, and the other end extends through the sleeve and is installed in the middle of the rotating plate. A rotating joint is installed in the driven gear ring. One end of the rotating joint passes through the rotating plate and is inserted into the connecting tube. The connecting tube is connected to the second liquid supply pipe laid on the retainer. The hose is connected to the injection joint of the dispersing pipe. Through the above structure, the rotating plate can be controlled to rotate at the same time, and the liquid supply pipe can be laid, providing stable rotation and liquid supply functions for cleaning. Attached Figure Description

[0026] Figure 1 A perspective view provided for an embodiment of the present invention;

[0027] Figure 2 A perspective view of the door panel removal provided in an embodiment of the present invention;

[0028] Figure 3 A half-sectional perspective view of the cleaning box provided in an embodiment of the present invention;

[0029] Figure 4 A perspective view of the disassembled frame provided in an embodiment of the present invention;

[0030] Figure 5 A partial perspective view provided for an embodiment of the present invention;

[0031] Figure 6 This is a partial perspective view of the transmission seat in a half-section provided in an embodiment of the present invention;

[0032] Figure 7 This is a perspective view of the rotating plate and the cage installed according to an embodiment of the present invention;

[0033] Figure 8 This is a partial perspective view of the rotating plate and cage provided in an embodiment of the present invention;

[0034] Figure 9 This is a partial perspective view of the slide seat being disassembled according to an embodiment of the present invention;

[0035] Figure 10 The three-dimensional disassembly sliding seat of the liquid distribution tube provided in the embodiment of the present invention Figure 1 ;

[0036] Figure 11 The three-dimensional disassembly sliding seat of the liquid distribution tube provided in the embodiment of the present invention Figure 2 .

[0037] In the diagram: 1. Cleaning box; 2. Door panel; 3. Base; 31. Collection tank; 4. Equipment box; 5. Cleaning chamber; 51. Slot; 6. Through slot; 7. Shelf; 8. Hoop; 9. Gear; 10. Baffle; 11. Drive control mechanism; 111. First supply pipe; 112. Return pipe; 113. Rotary joint; 12. Servo motor; 13. Transmission seat; 14. Gear; 15. Driven gear ring; 16. Rotary... Moving plate; 161, groove; 17, first electric telescopic component; 18, connecting cylinder; 19, retainer; 191, plug; 20, second liquid supply pipe; 21, sliding seat; 211, limiting groove; 212, telescopic groove; 213, spray nozzle; 214, liquid supply pipe slide groove; 215, upper slide groove; 22, second electric telescopic component; 221, connecting block; 23, dispersing pipe; 231, injection connector; 24, nozzle. Detailed Implementation

[0038] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0039] like Figure 1-11As shown, a dishwasher with an adjustable-angle spray cleaning arm includes a cleaning tank 1, a base 3, and an equipment box 4. The cleaning tank 1 is mounted on top of the base 3, and the equipment box 4 is mounted on the back side of the base 3. A drive control mechanism 11 for supplying and draining liquid is installed inside the equipment box 4. A horizontal columnar cleaning chamber 5 is provided inside the cleaning tank 1, with its two ends positioned front and rear. A rotating mechanism with a different shaft drive is installed on the back plate of the cleaning chamber 5. The different shaft drive satisfies the need for drive rotation and provides a foundation for the laying of the liquid supply pipeline. The driven gear ring 15 included in the rotating mechanism is connected to the middle of the rotating plate 16. The middle of the rotating plate 16 is connected to the middle of a frame-shaped retainer 19 through a connecting cylinder 18, and the connection method is a fixed connection. The upper and lower inner sides of the retainer 19 are symmetrically equipped with rotatable adjustable sliding seats 21. One end of the sliding seat 21 is hinged to the top of a telescopic mechanism mounted on the rotating plate 16. The telescopic mechanism is controlled by... The mechanism drives the sliding seat 21 to swing with the rise and fall, adjusting the elevation angle; a liquid distribution pipe 23 is slidably installed on the sliding seat 21 under the control of the second electric telescopic component 22, and multiple nozzles 24 are installed on the liquid distribution pipe 23. The extension and retraction of the liquid distribution pipe 23 is controlled by the second electric telescopic component 22 to adjust and increase the longitudinal depth of the spray coverage; the first liquid supply pipe 111 output by the drive control mechanism is connected to the rotary joint 113. The rotary joint 113 is set to avoid the situation of rotation limit. The rotary joint 113 passes through the driven toothed ring 15 and connects to the connecting cylinder 18. The washing liquid enters the connecting cylinder 18 through the rotary joint 113, and then disperses into the second liquid supply pipe 20 through the connecting cylinder 18. The connecting cylinder 18 is connected to the second liquid supply pipe 20 laid on the retainer 19. The second liquid supply pipe 20 is connected to the injection joint 231 of the liquid distribution pipe 23; the cleaning chamber 5 is connected to the bottom liquid collection tank 31, and one side of the liquid collection tank 31 is connected to the drive control mechanism through the return liquid pipe 112.

[0040] The cleaning chamber 5 has a cylindrical rack for holding tableware inserted from the front end, and the sliding seat 21 is inserted into the area between the rack and the cleaning chamber 5 to rotate and spray.

[0041] In this embodiment, the design concept, compared to the traditional fixed-distribution cleaning and rinsing mechanism with its spray nozzles, analyzes its spray cleaning principle and cleaning performance in actual application. It concludes that the fixed spray angle is not ideal for cleaning concave tableware gaps. The sprayed detergent cannot directly reach the concave inner wall and needs to be deflected by the obstruction of the tableware's outer edge, ultimately resulting in poor cleaning effect. To solve the above problems, this invention adopts a rotary-mounted spray nozzle for spray cleaning. On the one hand, compared to the traditional fixed installation, the rotary type can save the number of nozzles used. On the other hand, by flexibly setting the sliding seat 21 to carry the liquid distribution pipe 23, the spray angle can be changed by adjusting the elevation angle, and the spray coverage range can be increased by extending and retracting.

[0042] like Figure 3, 5 As shown in Figures 6 and 7, the rotating mechanism of the off-axis transmission includes a servo motor 12, a gear 14, and a driven gear ring 15. An 8-shaped transmission seat 13 is mounted on the back plate of the cleaning chamber 5 using screws. The transmission seat 13 has intersecting slots for mounting the meshing gear 14 and the driven gear ring 15. The slot for the driven gear ring 15 is a through slot, penetrating both the transmission seat 13 and the back plate of the cleaning chamber 5. One end of the gear 14 is connected to the output end of the servo motor 12. By controlling the servo motor 12, the gear 14 rotates, which in turn drives the driven gear ring 15 to rotate. The driven gear ring 15 then drives the rotating plate 16 to rotate. The servo motor 12 is mounted on the back plate of the cleaning chamber 1, and one end of the driven gear ring 15 extends through the transmission seat 13 via a sleeve. The other end of the sleeve is installed in the middle of the rotating plate 16 along with the back panel of the cleaning chamber 5, laying the foundation for the installation of the rotating joint 113 in the driven gear ring 15. The rotating joint 113 is installed in the driven gear ring 15, and one end of the rotating joint 113 passes through the rotating plate 16 and is inserted into the connecting cylinder 18, so that the washing liquid is supplied at the same time as the rotation.

[0043] like Figure 9 As shown, plugs 191 are symmetrically installed on the upper and lower inner sides of the retainer 19. Limiting grooves 211 are symmetrically arranged on both sides of the sliding seat 21 and are slidably locked onto the plugs 191 on both sides. When the telescopic mechanism descends and drives the inner end of the sliding seat 21 to descend, the sliding seat 21 rotates inward and downward relative to the plug 191 while sliding to adjust the elevation angle of the outer end.

[0044] like Figure 8 , 9 As shown, the rotating plate 16 is provided with a groove 161 with an opening facing outward. A telescopic mechanism is installed in the groove 161. The telescopic mechanism is a first electric telescopic component 17. The inner end of the sliding seat 21 is hinged to the top of the first electric telescopic component 17. By controlling the extension and retraction of the first electric telescopic component 17, the inner end of the sliding seat 21 is raised and lowered, thereby adjusting the elevation angle of the outer section of the sliding seat 21.

[0045] like Figure 9 , 10As shown in Figure 11, the sliding seat 21 has an outward-facing telescopic groove 212 for installing the dispensing pipe 23. The top of the sliding seat 21 has an upper sliding groove 215, and a second electric telescopic component 22 is installed on the top of the sliding seat 21. The dispensing pipe 23 is slidably installed in the telescopic groove 212. A connecting block 221, penetrating the upper sliding groove 215, is installed above the dispensing pipe 23. The movable end of the second electric telescopic component 22 is connected to one side of the connecting block 221. By controlling the second electric telescopic component 22 to push and pull the connecting block 221, the sliding extension and retraction of the sliding seat 21 is controlled. The bottom of the sliding seat 21 has a supply pipe groove 214 and a spray nozzle 213 arranged from the inside out. The supply pipe groove 214 prevents the bottom injection connector 231 from contacting the dispensing pipe 23 when it slides. The spray nozzle 213… Multiple nozzles 24 are installed at the bottom of the upper spray pipe 23. An injection connector 231 is provided on the bottom inner side of the spray pipe 23, which passes through the supply pipe groove 214. The injection connector 231 is connected to the second supply pipe 20 for supplying liquid. The liquid is supplied through the injection connector 231, and sprayed from the spray pipe 23 through the multiple nozzles 24 and the spray port 213. The above structure not only controls the spray coverage of the multiple nozzles 24, but also increases the effect of stable control of the sliding.

[0046] like Figure 9 As shown, the second liquid supply pipe 20 is installed on the retainer 19 by multiple clamps to prevent the second liquid supply pipe 20 from being pulled into the retainer body and obstructing rotation when rotating.

[0047] The drive control mechanism 11 is the circulating liquid control device included in the existing dishwasher, mainly consisting of an electric motor, washing pump, drain pump, program controller, pressure switch, solenoid valve, heater, etc.

[0048] like Figure 3 , 4 As shown, the bottom of the cleaning chamber 5 is connected to the liquid collection tank 31 on the base 3 through the through groove 6. After the washing liquid comes into contact with the surface of the tableware, it drips into the liquid collection tank 31 at the bottom through the through groove 6. The user can place a filter screen in the liquid collection tank 31 according to the usage needs. The front end of the cleaning chamber 5 is recessed with multiple slots 51, and the frame is inserted into the multiple slots 51.

[0049] like Figure 4As shown, the rack includes multiple symmetrically arranged shelves 7. The number of shelves 7 is reasonably arranged according to the power of the dishwasher and the number of nozzles. When the number of shelves 7 increases, the rinsing efficiency decreases due to obstruction. The multiple shelves 7 are positioned by multiple annular clamps 8, and multiple L-shaped inserts 9 are installed on the clamps 8 at the front end. One side of the insert 9 is radially mounted to the cylindrical rack and the other side is axially mounted to the cylindrical rack. The rack is inserted into the cleaning chamber 5 by the multiple inserts 9. A door panel 2 is rotatably installed at the front end of the cleaning chamber 5. When loading or unloading tableware, the door panel 2 is opened to place or remove the tableware one by one, which is convenient to operate.

[0050] like Figure 4 As shown, two sets of inserts 9 located at the bottom front are fitted with arc-shaped baffles 10 that fit against the bottom of the cleaning chamber 5, preventing the washing liquid from seeping out during re-rinsing or collecting in front of the door panel 2 and flowing out when the door is opened.

[0051] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. A dishwasher with an adjustable angle spray cleaning arm, comprising a cleaning tank (1), a base (3) and a device tank (4), the cleaning tank (1) is installed above the base (3), the device tank (4) is installed on the back side of the base (3), a driving control mechanism (11) for supplying and discharging liquid is installed in the device tank (4), characterized in that; The cleaning box (1) is provided with a horizontal columnar cleaning chamber (5), a rotating mechanism with different shafts is installed on the back plate of the cleaning chamber (5), a driven gear ring (15) included in the rotating mechanism is connected to the middle part of a rotating plate (16); ​ The middle part of the rotating plate (16) is connected to the middle part of a frame (19) in the form of a frame through a connecting cylinder (18); A rotatable sliding seat (21) is symmetrically installed on the frame (19) in an up-down manner, one end of the sliding seat (21) is hinged to the top end of an extension mechanism installed on the rotating plate (16); A liquid distribution pipe (23) is slidably installed on the sliding seat (21), a plurality of spray heads (24) are installed on the liquid distribution pipe (23); A first liquid supply pipe (111) output by the driving control mechanism is connected to a rotating joint (113), the rotating joint (113) penetrates the driven gear ring (15) and is connected to the connecting cylinder (18), the connecting cylinder (18) is connected to a second liquid supply pipe (20) laid on the frame (19), the second liquid supply pipe (20) is connected to an injection joint (231) of the liquid distribution pipe (23); The cleaning chamber (5) is connected to a liquid collecting groove (31) at the bottom, one side of the liquid collecting groove (31) is connected to the driving control mechanism through a liquid return pipe (112); A cylindrical rack for holding tableware is inserted into the cleaning chamber (5), the sliding seat (21) is inserted between the rack and the cleaning chamber (5).

2. The dishwasher having an angle-adjustable spray arm according to claim 1, wherein The rotating mechanism includes a servo motor (12), a gear (14) and a driven gear ring (15), an 8-shaped transmission seat (13) is installed on the back plate of the cleaning chamber (5), the gear (14) and the driven gear ring (15) are installed on the transmission seat (13) in a meshing manner, one end of the gear (14) is connected to the output end of the servo motor (12), the servo motor (12) is installed on the back plate of the cleaning box (1), one end of the driven gear ring (15) extends a sleeve penetrating the transmission seat (13) and the back plate of the cleaning chamber (5), the other end extends a sleeve installed in the middle part of the rotating plate (16), the rotating joint (113) is installed in the driven gear ring (15), one end of the rotating joint (113) penetrates the rotating plate (16) and is inserted into the connecting cylinder (18).

3. The dishwasher having an angle-adjustable spray arm according to claim 1, wherein Plug-in connectors (191) are symmetrically installed on the inner sides of the frame (19) in an up-down manner, limit grooves (211) are symmetrically arranged on both sides of the sliding seat (21) and are slidably connected to the plug-in connectors (191) on both sides.

4. The dishwasher having an angle-adjustable spray arm according to claim 3, wherein A recess (161) with an opening outward is arranged on the rotating plate (16), an extension mechanism is installed in the recess (161), the extension mechanism is a first electric telescopic member (17), the inner side end of the sliding seat (21) is hinged to the top of the first electric telescopic member (17).

5. The dishwasher having an angle-adjustable spray arm according to claim 3, wherein The sliding seat (21) is internally provided with an opening to the outside end of the telescopic slot (212), the top of the sliding seat (21) is provided with an upper sliding slot (215), the second electric telescopic part (22) is installed on the top of the sliding seat (21), the liquid distribution pipe (23) is slidingly installed in the telescopic slot (212), the connecting block (221) is installed above the liquid distribution pipe (23), the movable end of the second electric telescopic part (22) is connected to one side of the connecting block (221), the bottom of the sliding seat (21) is internally provided with a liquid supply pipe sliding slot (214) and a spray port (213) from inside to outside, respectively, a plurality of spray heads (24) are installed on the bottom of the liquid distribution pipe (23) above the spray port (213), an injection joint (231) is provided on the inside bottom of the liquid distribution pipe (23) and penetrates the liquid supply pipe sliding slot (214), and the injection joint (231) is connected to the second liquid supply pipe (20) for liquid supply.

6. The dishwasher having an angle-adjustable spray arm according to claim 5, wherein The second liquid supply pipe (20) is installed on the holder (19) by a plurality of clamping blocks.

7. The dishwasher having an angle-adjustable spray arm according to claim 1, wherein The drive control mechanism (11) includes a motor, a washing pump, a drainage pump, a program controller, a pressure switch, a solenoid valve, and a heater.

8. The dishwasher having an angle-adjustable spray arm according to claim 1, wherein The bottom of the cleaning chamber (5) is communicated with the liquid collecting groove (31) on the base (3) through a penetrating groove (6), a filter screen can be placed in the liquid collecting groove (31) according to the use requirement, a plurality of insertion grooves (51) are arranged in the front end of the cleaning chamber (5) in a concave manner, and the holder is inserted into the plurality of insertion grooves (51).

9. The dishwasher having an angle-adjustable spray arm according to claim 8, wherein, The holder includes a plurality of layer holders (7) arranged symmetrically upward and downward, the plurality of layer holders (7) are positioned by a plurality of annular hoop holders (8), the hoop holder (8) at the front end is provided with a plurality of L-shaped insertion teeth (9), one side of the insertion tooth (9) is radially installed on the cylindrical holder, and the other side is axially installed on the cylindrical holder, the holder is inserted into the cleaning chamber (5) through the plurality of insertion teeth (9), and the door plate (2) is rotationally installed at the front end of the cleaning chamber (5).

10. The dishwasher having an angle-adjustable spray arm according to claim 9, wherein The two groups of insertion teeth (9) at the front end of the bottom are provided with arc-shaped baffle plates (10) which are attached to the bottom of the cleaning chamber (5).

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