Energy-saving rotary spraying full-automatic dish washing machine and dish washing method

Abstract

The invention belongs to the technical field of dish washing machines, and particularly relates to an energy-saving rotary spraying full-automatic dish washing machine and a dish washing method. The dish washing machine comprises a main water tank, an upper spraying arm arranged above the main water tank, a plurality of rotary spraying discs arranged on the lower portion of the main water tank, a hot air inlet, a hot air outlet and an air circulation system, wherein the hot air inlet and the hot air outlet are formed in the upper portion of the main water tank, and the air circulation system communicates with the hot air inlet and the hot air outlet. The air circulation system comprises a small heat extraction fan, a hot air exchange box communicated with the small heat extraction fan through a pipeline, an air blower connected with the hot air exchange box through a pipeline, a drying heating module communicated with the air blower through a pipeline, a hot air inlet pipeline communicated with the hot air inlet and a backflow prevention air channel connected between the hot air inlet pipeline and the drying heating module. Hot air in the main water tank is accelerated to circulate through the air circulation system, meanwhile, water vapor in the main water tank is pumped away, the drying speed is increased, tableware is rinsed from the lower side through the rotary spraying disc arranged at the bottom, and the rinsing efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of dishwashers, and in particular relates to an energy-saving rotary spraying fully automatic dishwasher and a dishwashing method. Background Art

[0002] The drying program of a traditional dishwasher heats the air electrically and then blows it toward the dishes to dry them. Excess heat and water vapor are discharged through overflow vents, so the heat is not well utilized, and the water vapor evaporates slowly, resulting in a slow drying speed. In addition, since the heat is not utilized to the maximum extent, it is more energy-consuming.

[0003] During the dishwashing procedure, air is blown into the water through the air nozzle installed in the main water tank. The bubbling principle can be used to speed up the cleaning of the dishes. The air nozzle is set on the pipe connected to the blower. When the bubbling stops, the water in the main water tank will flow back into the pipe, and then more water will enter the blower, which may easily burn the blower or cause unsafe conditions, affecting the service life of the blower.

[0004] After cleaning, traditional dishwashers need to drain the water in the sink completely and then add a sink of water for rinsing, which is slow and wastes a lot of water. In order to speed up cleaning, some dishwashers will set a rotating spray arm above the sink to rinse the tableware, but the underside of the tableware is often not well rinsed and the rinsing is not thorough.

[0005] If a rotating spray arm is also installed under the sink of the dishwasher, the rotating spray arm will interfere with the chopsticks, spoons and other tableware at the bottom. Summary of the invention

[0006] The purpose of the present invention is to overcome the defect that the dishwasher in the prior art does not make the maximum use of heat, resulting in relatively high power consumption, and to provide an energy-saving rotary spraying fully automatic dishwasher and a dishwashing method.

[0007] The technical solution adopted by the present invention to solve its technical problem is:

[0008] An energy-saving rotary spraying fully automatic dishwasher is characterized by comprising: a main water tank, an upper spraying arm arranged above the main water tank, a plurality of rotary spraying discs arranged at the lower part of the main water tank, a hot air inlet and a hot air outlet arranged at the upper part of the main water tank, and an air circulation system connecting the hot air inlet and the hot air outlet.

[0009] Furthermore, the air circulation system includes a small heat extraction fan connected to the hot air outlet pipe, a hot air exchange box connected to the small heat extraction fan pipe, a blower connected to the hot air exchange box pipe, a drying and heating module connected to the blower pipe, a hot air inlet pipe connected to the hot air inlet, and an anti-backflow duct connected between the hot air inlet pipe and the drying and heating module.

[0010] Furthermore, the anti-backflow air duct is an arched pipe, and the top of the arched pipe is higher than the water surface in the main water tank.

[0011] Furthermore, an air nozzle for blowing air toward the inside of the main water tank is provided on the hot air inlet duct below the hot air inlet, and an air duct solenoid valve is provided on the hot air inlet duct between the air nozzle and the hot air inlet.

[0012] Furthermore, the bottom of the hot air exchange box has a plurality of air inlet holes opening downward.

[0013] Furthermore, the drying and heating module includes an air cavity and a heater arranged in the air cavity, the blower blows air into the air cavity, and the heater heats the air.

[0014] Furthermore, the rotating spray disc is installed on the water inlet pipe through a bearing, and the rotating spray disc includes a cylindrical cavity and an arc-shaped cavity arranged on the cylindrical cavity, and the lower end of the cylindrical cavity is sleeved on the outer ring of the bearing; the water inlet pipe is installed in coordination with the inner ring of the bearing; the upper part of the cylindrical cavity is provided with a spiral channel, and the spiral channel is connected to the arc-shaped cavity; the spiral channel is provided with a first water spray hole which is obliquely opened upward.

[0015] Furthermore, a plurality of second water spray holes opening upward are arranged on the cylindrical cavity.

[0016] Furthermore, a low water level switch, a high water level switch and a water tank heating pipe are arranged in the main water tank.

[0017] Furthermore, it also includes a small water tank arranged on the side of the main water tank.

[0018] The present invention also discloses a dishwashing method of the energy-saving rotary spraying fully automatic dishwasher, comprising the following steps:

[0019] Cleaning stage: drain water to the lowest water level switch, start the water tank heating tube, and stop adding water after reaching the highest water level; start the blower to blow fresh air into the main water tank through the air nozzle, and use the bubbling principle to remove the residue from the surface of the tableware faster; in the cleaning stage, the heat extraction fan, drying heating module and air duct solenoid valve are closed;

[0020] After cleaning, the water will be automatically drained;

[0021] Rinsing stage: water is supplied to the upper spray arm and the rotating spray plate, and clean water is sprayed out through the upper spray arm and the rotating spray plate to rinse the washed dishes;

[0022] Drying stage: turn on the small heat extraction fan, blower, drying heating module, and air duct solenoid valve. The blower draws air from the hot air exchange box into the air cavity of the drying heating module, and after being heated into hot air, it is ejected from the jet nozzle and the hot air inlet to dry the tableware. At the same time, the small heat extraction fan sucks the hot air in the main water tank from the hot air outlet into the hot air exchange box. Due to the contact between the hot air and the pipe and the hot air entering from the air inlet, small water droplets will be generated in the hot air exchange box after condensation, and the small water droplets will drip out through the air inlet opening facing downward.

[0023] The beneficial effects of the energy-saving rotary spraying fully automatic dishwasher of the present invention are:

[0024] 1. The present invention accelerates the circulation of hot air in the main water tank through the air circulation system, and at the same time extracts the water vapor in the main water tank to accelerate the drying speed. The tableware is rinsed from the bottom through the rotating spray plate arranged at the bottom, thereby improving the rinsing efficiency.

[0025] 2. By setting up an anti-wind backflow air duct with an arched pipe whose top is higher than the water surface in the main water tank, it can effectively prevent water entering from the air nozzle from flowing back into the drying heating module and the blower, effectively protecting the safety of the electrical appliance.

[0026] 3. After the water pressure enters the spiral channel, the impact on the spiral channel will cause the rotating spray disc to rotate automatically. During the automatic rotation, water will be sprayed out from the first and second spray holes to rinse the tableware. The rotating spray disc is set at the bottom of the main sink. When rinsing, the tableware is rinsed upwards. Chopsticks, spoons and other tableware will not interfere with the rotating cylindrical rotating spray disc. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0028] Figure 1 2 is a schematic front view of an energy-saving rotary spraying fully automatic dishwasher according to an embodiment of the present invention;

[0029] Figure 2 1 is a schematic top view of an energy-saving rotary spraying fully automatic dishwasher according to an embodiment of the present invention;

[0030] Figure 3 This is an overall structural diagram of a rotary spray disk according to an embodiment of the present invention;

[0031] Figure 4 1 is a diagram showing the internal structure of a cylindrical cavity of a rotary spray disk according to an embodiment of the present invention;

[0032] Figure 5 is a diagram showing the internal structure of the arc-shaped cavity of the rotary spray disk according to an embodiment of the present invention;

[0033] Figure 6It is a cross-sectional view of a rotating spray disk using the new embodiment.

[0034] In the figure: 1, main water tank, 2, upper spray arm, 21, spray head, 3, rotating spray plate, 31, cylindrical cavity, 32, arc cavity, 33, spiral channel, 34, first water spray hole, 35, second water spray hole, 4, hot air inlet, 5, hot air outlet, 6, ultrasonic generator, 7, drying and heating module, 71, heater, 72, air cavity, 8, heat extraction small fan, 9, hot air exchange box, 91, air inlet, 10, blower, 11, small water tank, 1 2. Water inlet pipe, 13. Hot air inlet duct, 14. Anti-backflow air duct, 15. Air nozzle, 16. Bottom air duct, 17. Air duct solenoid valve, 18. Low water level switch, 19. High water level switch, 20. Drain main pipe, 21. Oil overflow pipe, 22. Waste collection tank, 23. Control cabinet, 24. Sliding cover, 25. Overflow duct, 26. Overflow port, 27. Sink heating pipe, 28. Automatic drainage ball valve, 29. Water inlet solenoid valve, 30. Partition net. DETAILED DESCRIPTION

[0035] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0036] like Figure 1-Figure 6 The specific embodiment of the energy-saving rotary spraying fully automatic dishwasher of the present invention shown in the figure comprises: a main water tank 1, an upper spray arm 2 arranged above the main water tank 1, a plurality of rotary spray plates 3 arranged at the lower part of the main water tank 1, a hot air inlet 4 and a hot air outlet 5 arranged at the upper part of the main water tank 1, an air circulation system connecting the hot air inlet 4 and the hot air outlet 5, an ultrasonic generator 6 arranged in the main water tank 1, and a small water tank 11 arranged at the side of the main water tank 1.

[0037] The air circulation system includes a small heat extraction fan 8 connected to the hot air outlet 5 pipeline, a hot air exchange box 9 connected to the small heat extraction fan 8 pipeline, a blower 10 connected to the hot air exchange box 9 pipeline, a drying and heating module 7 connected to the blower 10 pipeline, a hot air inlet pipeline 13 connected to the hot air inlet 4, and an anti-backflow air duct 14 connected between the hot air inlet pipeline 13 and the drying and heating module 7; the anti-backflow air duct 14 is an arched pipeline, and the top of the arched pipeline is higher than the water surface in the main water tank 1. The safest solution is that the top of the arched pipeline is higher than the top of the main water tank 1; it can also be higher than the hot air inlet 4.

[0038] The hot air inlet duct 13 below the hot air inlet 4 is provided with an air nozzle 15 blowing toward the inside of the water tank, and an air duct solenoid valve 17 is provided on the hot air inlet duct 13 between the air nozzle 15 and the hot air inlet 4. A bottom air duct 16 connected to the hot air inlet duct 13 is provided on the bottom surface of the main water tank 1, and the bottom air duct 16 is also provided with a plurality of air nozzles 15 blowing upward.

[0039] The bottom of the hot air exchange box 9 has a plurality of air inlet holes 91 opening downward.

[0040] During the cleaning stage, the air duct solenoid valve 17 is closed, the drying and heating module 7 does not start heating, the blower 10 continues to run to extract air, and the gas is ejected from the air nozzle 15 into the cleaning water in the main water tank 1, using the bubbling principle to speed up the cleaning. When the cleaning is completed, the blower 10 stops running. At this time, the water in the main water tank 1 will flow back into the hot air inlet duct 13 through the air nozzle 15. There is a risk that the water will flow back from the hot air inlet duct 13 to the blower 10 and the drying and heating module 7, affecting the safety and service life of the blower 10 and the drying and heating module 7. The present invention sets an arched anti-backflow air duct 14 between the hot air inlet duct 13 and the blower 10, and as long as the top of the anti-backflow air duct 14 is higher than the water surface, water will not flow back into the blower 10. The top of the anti-backflow air duct 14 can be higher than the hot air inlet 4, or it can be safer to be higher than the top of the water tank.

[0041] The drying and heating module 7 includes an air cavity 72 and a heater 71 disposed in the air cavity 72 . The blower 10 blows air into the air cavity 72 , and the heater 71 heats the air.

[0042] See also Figure 3-Figure 6 The rotary spray disc 3 of the present invention is mounted on the water inlet pipe 12 through a bearing. The rotary spray disc 3 includes a cylindrical cavity 31 and an arc cavity 32 arranged on the cylindrical cavity 31. The lower end of the cylindrical cavity 31 is sleeved on the outer ring of the bearing; the water inlet pipe 12 is installed in cooperation with the inner ring of the bearing; the upper part of the cylindrical cavity 31 has a spiral channel 33, and the spiral channel 33 is connected to the arc cavity 32; the spiral channel 33 has a first water spray hole 34 that opens obliquely upward. Preferably, the central axis of the first water spray hole 34 and the central axis of the cylindrical cavity 31 are at an angle of 30°-45°. A plurality of second water spray holes 35 that open upward are arranged on the cylindrical cavity 31. Preferably, the central axis of the second water spray hole 35 and the central axis of the cylindrical cavity 31 are at an angle of 15°-45°.

[0043] Since tap water itself has a certain water pressure, after the water inlet pipe 12 enters the spiral channel 33 of the rotating spray plate 3, the spiral spray plate 3 will automatically rotate due to the pressure of the incoming water impacting the spiral channel 33. While rotating automatically, water will be sprayed out from the first water spray hole 34 and the second water spray hole 35 to rinse the tableware.

[0044] In order to ensure that the rotating spray disc 3 sprays water upward with greater spray force on the tableware, the water flow is pressurized by a booster pump before the water inlet pipe 12 enters the rotating spray disc 3.

[0045] The upper spray arm 2 of the present invention is a spray rod provided with a plurality of spray heads 21 with different orientations, and the spray rod is connected to the water inlet pipe 12 through a bearing; because the spray heads 21 have specific different orientations, under the action of tap water pressure, the upper spray arm 2 can rotate around the water inlet pipe 12 while spraying water. The above-mentioned rotatable upper spray arm 2 is relatively common in the art and will not be described in detail here.

[0046] In order to spray water upward from the bottom to strengthen the washing of tableware, the present invention designs a rotating spray plate 3. Considering that some long tableware such as chopsticks and spoons will be deposited at the bottom of the main water tank 1, if a conventional rotating spray arm is used, the operation of the spray arm will often be blocked. The present invention designs a disc-shaped rotating spray plate 3 to solve this problem. The top of the rotating spray plate 3 is arc-shaped or semicircular, and the diameters of the first spray hole 34 and the second spray hole 35 are small, so that chopsticks and the like will not be inserted. In addition, the rotating volume of the rotating spray plate is small, and it will not interfere with the tableware at the bottom of the main water tank 1.

[0047] A low water level switch 18 and a high water level switch 19 are provided in the main water tank 1, a water tank heating pipe 27 is provided in the water tank, a drainage main pipe 20 is provided below the main water tank 1, the drainage main pipe 20 is connected to the main water tank 1 through an automatic drainage ball valve 28, and the drainage pipe of the small water tank 11 is connected to the drainage main pipe 20. An oil overflow pipe 21 is provided in the main water tank 1, the upper end of the oil overflow pipe 21 is at a height close to the height of the high water level switch 19, and the lower end is connected to the drainage main pipe 20.

[0048] Two water level switches are designed in the main water tank of the present invention. When water is put into the low water level switch 18, the program for heating the water in the main water tank 1 can be started, and then water can be added to the high water level switch 19 while heating, saving heating and the entire cleaning time.

[0049] In principle, the top of the arched pipe of the backflow prevention air duct 14 only needs to be higher than the high water level switch 19 .

[0050] The control cabinet 23 of the present invention can be arranged below the small water tank 11 to effectively utilize the product space.

[0051] The bottom surface of the main water tank 1 is designed as an inclined surface, and a waste collection tank 22 is arranged at the lowest end of the inclined surface. The waste collection tank 22 is connected to the main drainage pipe 20.

[0052] The upper part of the main water tank 1 is sealed by two sliding covers 24 that slide against each other. The sliding covers 24 are hollow covers, which have good heat preservation effect on one hand, and prevent water droplets from splashing out during dishwashing and isolate noise on the other hand.

[0053] An overflow port 26 is provided above the main water tank 1 , and the main water tank 1 is connected to the overflow port 26 through an overflow pipe 25 .

[0054] In order to ensure the orderly arrangement of the tableware, a plurality of parallel partitions 30 are provided in the main sink 1 to separate the rows of tableware.

[0055] The energy-saving rotary spraying fully automatic dishwasher of the present invention is an automated device that can be used to wash tableware, vegetables, fruits, etc. Taking tableware washing as an example, the specific working process is as follows:

[0056] Cleaning stage: drain water to the lowest water level switch 18, start the water tank heating tube 27, and stop adding water after reaching the highest water level. Start the ultrasonic generator 6, and use the ultrasonic transducer to emit high frequency to separate food residues and stains, pesticides and other residues. After several minutes, start the blower 10, blow fresh air into the water tank through the air nozzle 15, and use the bubbling principle to remove the residue from the surface of the tableware faster. In addition, the separated oil stains overflow to the oil overflow pipe 21 through the agitation of the water surface and are directly discharged. In the cleaning stage, the heat extraction fan 8, the drying and heating module 7 and the air duct solenoid valve 17 are closed.

[0057] After the cleaning is completed, the ultrasonic wave and bubbling are stopped, and the automatic drainage ball valve 28 is opened to automatically drain the water.

[0058] Rinsing stage: In the prior art, most of the rinsing still needs to be continued in a sink with hot water for rinsing. The present invention directly rinses by spraying up and down, saving a lot of water and energy. The water inlet solenoid valve 29 on the water inlet pipe 12 is started to supply water to the upper spray arm 2 and the rotating spray plate 3, and water is sprayed through the upper spray arm 2 and the rotating spray plate 3 to rinse the washed dishes.

[0059] Drying stage: turn on the small heat extraction fan 8, the blower 10, the drying heating module 7, and the air duct solenoid valve 17. The blower 10 draws air from the hot air exchange box 9 into the air cavity 72 of the drying heating module 7, and after being heated into hot air, it is ejected from the air nozzle 15 and the hot air inlet 4 to dry the tableware. At the same time, the small heat extraction fan sucks the hot air in the main water tank 1 from the hot air outlet 5 into the hot air exchange box 9. Due to the contact between the hot air and the pipeline and the contact between the hot air and the air entering from the air inlet 91, small water droplets will be generated in the hot air exchange box 9 after condensation, and the small water droplets can drip out through the air inlet 91 with the opening facing downward.

[0060] The design of the small water tank 11 provided in the present invention ensures that the machine can wash while also meeting the manual cleaning requirements.

[0061] It should be understood that the specific embodiments described above are only used to explain the present invention, and are not used to limit the present invention. Obvious changes or modifications derived from the spirit of the present invention are still within the protection scope of the present invention.

Claims

1. An energy-saving rotary spray fully automatic dishwasher, characterized by: include: A main water tank (1), an upper spray arm (2) arranged above the main water tank (1), a plurality of rotating spray discs (3) arranged at the bottom of the main water tank (1), a hot air inlet (4) and a hot air outlet (5) arranged at the top of the main water tank (1), and an air circulation system connecting the hot air inlet (4) and the hot air outlet (5).

2. The energy-saving rotary spray fully automatic dishwasher according to claim 1, characterized in that: The air circulation system comprises a small heat extraction fan (8) connected to the hot air outlet (5) pipeline, a hot air exchange box (9) connected to the hot air extraction fan (8) pipeline, a blower (10) connected to the hot air exchange box (9) pipeline, a drying and heating module (7) connected to the blower (10) pipeline, a hot air inlet pipeline (13) connected to the hot air inlet (4), and an anti-backflow air duct (14) connected between the hot air inlet pipeline (13) and the drying and heating module (7).

3. The energy-saving rotary spray fully automatic dishwasher according to claim 2, characterized in that: The anti-backflow air duct (14) is an arched pipe, and the top of the arched pipe is higher than the water surface in the main water tank (1).

4. The energy-saving rotary spraying fully automatic dishwasher according to claim 2 is characterized in that: The hot air inlet duct (13) below the hot air inlet port (4) is provided with an air nozzle (15) for blowing air toward the inside of the main water tank (1), and an air duct solenoid valve (17) is provided on the hot air inlet duct (13) between the air nozzle (15) and the hot air inlet port (4).

5. The energy-saving rotary spraying fully automatic dishwasher according to claim 4 is characterized in that: The bottom of the hot air exchange box (9) has a plurality of air inlet holes (91) opening downward.

6. The energy-saving rotary spraying fully automatic dishwasher according to claim 5, characterized in that: The drying and heating module (7) comprises an air cavity (72) and a heater (71) arranged in the air cavity (72); the blower (10) blows air into the air cavity (72), and the heater (71) heats the air.

7. The energy-saving rotary spray fully automatic dishwasher according to claim 1, characterized in that: The rotating spray disc (3) is mounted on the water inlet pipe (12) via a bearing. The rotating spray disc (3) comprises a cylindrical cavity (31) and an arc-shaped cavity (32) arranged on the cylindrical cavity (31). The lower end of the cylindrical cavity (31) is sleeved on the outer ring of the bearing. The water inlet pipe (12) is mounted in cooperation with the inner ring of the bearing. The upper part of the cylindrical cavity (31) is provided with a spiral channel (33), which is connected to the arc-shaped cavity (32). The spiral channel (33) is provided with a first water spray hole (34) which is obliquely opened upward.

8. The energy-saving rotary spraying fully automatic dishwasher according to claim 7, characterized in that: A plurality of second water spray holes (35) opening upward are arranged on the cylindrical cavity (31).

9. The energy-saving rotary spraying fully automatic dishwasher according to claim 6, characterized in that: A low water level switch (18), a high water level switch (19) and a water tank heating pipe (27) are arranged in the main water tank (1).

10. The energy-saving rotary spray fully automatic dishwasher according to claim 1, characterized in that: It also includes a small water tank (11) arranged on the side of the main water tank (1).

11. The dishwashing method of the energy-saving rotary spraying fully automatic dishwasher according to claim 9, characterized in that: The following steps are involved: Cleaning step: drain water to the lowest water level switch (18), start the water tank heating pipe (27), and stop adding water after reaching the highest water level; The blower (10) is started to blow fresh air into the main water tank (1) through the air nozzle (15), and the residue is removed from the surface of the tableware more quickly by using the bubbling principle; during the washing step, the heat extraction fan (8), the drying and heating module (7) and the air duct solenoid valve (17) are closed; After cleaning, the water will be automatically drained; Rinsing stage: supplying water to the upper spray arm (2) and the rotating spray plate (3), spraying clean water through the upper spray arm (2) and the rotating spray plate (3) to rinse the washed tableware; Drying step: the small heat extraction fan (8), the blower (10), the drying heating module (7), and the air duct solenoid valve (17) are turned on. The blower (10) draws air from the hot air exchange box (9) into the air cavity (72) of the drying heating module (7). After being heated into hot air, the hot air is ejected from the air nozzle (15) and the hot air inlet (4) to dry the tableware. At the same time, the small heat extraction fan (8) sucks the hot air in the main water tank (1) from the hot air outlet (5) into the hot air exchange box (9). As the hot air contacts the pipeline and contacts the air entering from the air inlet (91), small water droplets are generated in the hot air exchange box (9) after condensation. The small water droplets drip out through the air inlet (91) with the opening facing downward.

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