Dishwasher and its control method and control device

Abstract

The present invention provides a dishwasher, a control method thereof, and a control device thereof. A blowing mechanism is arranged inside the dishwasher outside its original spray arm. The blowing mechanism includes a blowing head and a blowing control component connected to the blowing head. The blowing head is respectively connected with an air inlet pipeline and a liquid inlet pipeline. The blowing direction of the blowing head can at least point to the upper dish basket of the dishwasher. The blowing control component can control the position of the blowing landing point of the blowing head on the dish basket. Based on the technical solution of the present invention, the blowing mechanism is used to pre-spray the tableware that needs to be cleaned intensively to improve the washing effect in the subsequent overall washing process; the blowing mechanism can also blow air flow to the tableware in the upper dish basket to pre-dry the water stains on the upper dish basket or use the air flow impact to make them drip onto the lower dish basket first, and then perform overall drying, so as to avoid the water stains on the upper dish basket affecting the drying effect of the tableware in the lower dish basket.

Description

Technical Field

[0001] The present invention relates to the technical field of dishwashing equipment, and particularly to a dishwasher, a control method thereof, and a control device thereof. Background Art

[0002] The dishwasher has the characteristics of high efficiency, strong cleaning ability, easy operation, water and electricity saving, etc., making the dishwasher gradually become an indispensable part of kitchen appliances. At present, when the dishwasher is becoming more and more popular, users have more and more pain points for the dishwasher. For example, currently, most dishwashers are based on a set of cleaning and drying modules for overall cleaning and overall drying, and the overall working mode has some defects.

[0003] Specifically, during the overall cleaning process, the cleaning effect of individual tableware with stubborn stains is not good. During the overall drying process, due to the action of gravity, the water stains on the upper-layer tableware will drip onto the lower-layer tableware, which will cause the upper-layer tableware to be dried while the lower-layer tableware still has residual water stains, resulting in poor drying effect. Only by extending the drying program duration or restarting the drying program to further dry, which will also lead to too long overall drying time, the dishwasher runs overtime and wastes energy.

[0004] Therefore, how to reasonably shorten the working duration of the dishwasher while ensuring the drying effect has become an important direction for the current design of dishwasher products. Summary of the Invention

[0005] In order to solve the problems of the existing dishwashers using overall cleaning and drying, such as poor cleaning and drying effects of components and the extension of the continuous working duration of the dishwasher, the present invention proposes a dishwasher, a control method thereof, and a control device thereof.

[0006] In a first aspect, a dishwasher proposed by the present invention is provided. A spray arm and a blowing mechanism are arranged in the dishwasher. The blowing mechanism includes a blowing head and a blowing control component connected to the blowing head. The blowing head is respectively connected with an air inlet pipeline and a liquid inlet pipeline. The blowing direction of the blowing head can at least point to the upper dish basket of the dishwasher, and the blowing control component can control the position of the blowing landing point of the blowing head on the dish basket.

[0007] In an embodiment, the blowing control component can drive the blowing head to move to adjust its blowing direction, so that the range corresponding to the movement path of the blowing landing point of the blowing head on the dish basket covers the dish basket.

[0008] In one embodiment, the blowing control assembly includes a first servo and a second servo. A first output shaft of the first servo is connected to the blowing head, a second output shaft of the second servo is connected to the first servo, and the first output shaft and the second output shaft are orthogonal to each other.

[0009] In one embodiment, the blowing mechanism is disposed above the upper basket near the side, and the blowing direction of the blowing mechanism faces the upper basket; or

[0010] The blowing mechanism is disposed between the lower basket and the upper basket near the side, and the blowing direction of the blowing mechanism can face the upper basket above.

[0011] In one embodiment, control valves are respectively disposed on the air inlet pipeline and the liquid inlet pipeline.

[0012] In a second aspect, a control method for a dishwasher provided by the present invention includes:

[0013] Determine the operation stage that the dishwasher is to enter, and according to the operation stage, make the blowing mechanism of the dishwasher enter the corresponding operation mode;

[0014] If the operation stage that the dishwasher is to enter is the washing stage, then make the blowing mechanism enter the pre-washing mode, and make the blowing mechanism spray cleaning liquid towards the upper basket and / or the lower basket of the dishwasher;

[0015] If the operation stage that the dishwasher is to enter is the drying stage, then make the blowing mechanism enter the pre-drying mode, and make the blowing mechanism spray air towards the upper basket of the dishwasher.

[0016] In one embodiment, it further includes:

[0017] Adjust the spraying landing point of the blowing mechanism on the basket, so that the spraying landing point moves along a preset path on the basket for a predetermined number of times or a predetermined duration, and the range corresponding to the movement of the spraying landing point along the preset path covers the basket.

[0018] In one embodiment, it further includes:

[0019] When making the blowing mechanism spray cleaning liquid towards the upper basket and / or the lower basket of the dishwasher, increase the spraying duration or the spraying number of times on the target area on the upper basket and / or the lower basket.

[0020] In one embodiment, the target area is the area far from the blowing head of the blowing mechanism and / or the placement area of the key cleaning tableware.

[0021] In one embodiment, the preset path is an S-shaped path.

[0022] In a third aspect, a control device for implementing the above control method according to the present invention includes:

[0023] An operation mode determination module, which is used to determine the operation stage that the dishwasher is to enter and cause the spraying mechanism of the dishwasher to enter the corresponding operation mode according to the operation stage;

[0024] A spraying mechanism control module, which is used to control the spraying mechanism to spray cleaning liquid or spray air flow towards the corresponding dish basket of the dishwasher according to the corresponding operation mode.

[0025] The above technical features can be combined in various suitable ways or replaced by equivalent technical features as long as the purpose of the present invention can be achieved.

[0026] A dishwasher, a control method thereof, and a control device provided by the present invention, compared with the prior art, at least have the following beneficial effects:

[0027] A dishwasher, a control method thereof, and a control device of the present invention, by additionally providing a spraying mechanism inside the dishwasher, can pre-spray the tableware that needs to be cleaned intensively to improve the washing effect in the subsequent overall washing process; and the spraying mechanism can also spray the tableware in the upper dish basket before the overall drying, use the air flow to pre-dry the water stains on the upper dish basket or use the air flow impact to make the water stains on the upper dish basket drip onto the lower dish basket first, and then perform overall drying, so that the situation where the tableware in the lower dish basket is not dried due to the water stains on the upper dish basket will not occur. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Hereinafter, the present invention will be described in more detail based on embodiments and with reference to the drawings. Among them:

[0029] Figure 1 shows a schematic diagram of the overall structure of the dishwasher of the present invention;

[0030] Figure 2 shows a schematic diagram of the structure of the spraying mechanism of the dishwasher of the present invention;

[0031] Figure 3 shows a schematic diagram of the path of the spraying mechanism of the dishwasher of the present invention spraying and traveling on the dish basket;

[0032] Figure 4 shows a schematic flowchart of the principle of the method of the present invention.

[0033] In the drawings, the same components are denoted by the same reference numerals. The drawings are not drawn to actual scale.

[0034] Reference numerals:

[0035] 1. Dishwasher; 11. Spray arm; 12. Air outlet; 13. Air inlet; 2. Blowing mechanism; 21. Blowing head; 22. Blowing control component; 221. First servo; 222. Second servo; 3. Air inlet pipeline; 31. Fan; 4. Liquid inlet pipeline; 41. Delivery pump; 5. Control valve. Specific embodiments

[0036] The present invention will be further described below in conjunction with the accompanying drawings.

[0037] Embodiment 1

[0038] An embodiment of the present invention provides a dishwasher 1. A spray arm 11 and a blowing mechanism 2 are arranged inside the dishwasher 1. The blowing mechanism 2 includes a blowing head 21 and a blowing control component 22 connected to the blowing head 21. The blowing head 21 is respectively connected with an air inlet pipeline 3 and a liquid inlet pipeline 4. The blowing direction of the blowing head 21 can at least point to the upper basket of the dishwasher 1, and the blowing control component 22 can control the position of the blowing landing point of the blowing head 21 on the basket.

[0039] Specifically, as shown in the accompanying drawings Figure 1 And Figure 2 shown, a blowing mechanism 2 is arranged inside the dishwasher 1 outside its original spray arm 11. The blowing mechanism 2 can spray liquid or gas. Its blowing head 21 is respectively connected with an air inlet pipeline 3 and a liquid inlet pipeline 4. The air inlet pipeline 3 conveys air flow through a fan 31, and the liquid inlet pipeline 4 conveys liquid (water or cleaning liquid) through a delivery pump 41. The blowing control component 22 of the blowing mechanism 2 can control the orientation of the blowing head 21, so as to perform blowing operations for different positions and different requirements inside the dishwasher 1.

[0040] When the dishwasher 1 is in use, its working process generally first goes through a washing stage and then a drying stage. During the washing stage, for some tableware with stubborn stains, key cleaning is required. Then, the blowing mechanism 2 can be used to pre-wash the key cleaning tableware (achieved by controlling the blowing orientation of the blowing head 21 through the blowing control component 22), that is, before the overall washing stage of the dishwasher 1, pre-wash the key cleaning tableware by spraying water or cleaning liquid to improve the washing effect of the key cleaning tableware in the subsequent overall washing stage. During the drying stage, first perform blowing pre-drying on the upper basket. Use the blowing control component 22 to control the blowing head 21 corresponding to the upper basket, and use the ejected air flow to blow the upper basket and the tableware on the upper basket. It can not only avoid the water stains on the upper basket from dripping later through the pre-drying effect of blowing, but also make the water stains on the upper basket immediately drip onto the lower basket through the impact of the air flow. This can avoid the water stains on the upper basket from dripping during or after the drying process of the lower basket, affecting the final drying effect.

[0041] Therefore, in this embodiment, the actual operation process of the dishwasher 1 is as follows: First, it enters the pre-washing mode of the blowing mechanism 2, and uses the blowing mechanism 2 to pre-wash the tableware; then it enters the original washing stage of the dishwasher 1, and uses the spray arm 11 for spraying; then it enters the pre-drying mode of the blowing mechanism 2, and uses the blowing mechanism 2 to pre-dry the tableware, especially the upper-layer tableware; finally, it enters the original drying stage of the dishwasher 1, and in this stage, air flow is input through the air inlet 13 on the dishwasher 1 for overall drying, and the air flow is output from the air outlet 12.

[0042] In addition, regarding the pre-drying function of the blowing mechanism 2 in this embodiment, it should be further explained that the fundamental reason for the water stains on the upper-layer bowl basket to drip onto the lower-layer bowl basket is that when the upper and lower-layer bowl baskets are dried as a whole, their drying progress and effects are inconsistent. Specifically, restricted by the structural layout of the dishwasher 1, most of the components for realizing the drying function of the dishwasher 1 are arranged near the bottom of the dishwasher 1. Therefore, during drying, the drying effect of the lower-layer bowl basket is better than that of the upper-layer bowl basket. This leads to the situation that when the tableware in the lower-layer bowl basket is already dried, the tableware in the upper-layer bowl basket is not yet dried (or the tableware is already dry but there are still water stains on the upper-layer bowl basket itself). This results in the fact that at the end of drying or in the second half of the drying stage, there are still residual water stains on the tableware in the upper-layer bowl basket. These water stains drip onto the lower-layer bowl basket due to continuous accumulation or external forces (such as the vibration caused by the user opening the dishwasher 1 at the end of drying), thus causing the originally dried lower-layer tableware to be wet again, affecting the drying effect. The influence on the drying effect can be manifested as follows: After the drying is completed, the water stains on the upper-layer bowl basket drip onto the lower-layer bowl basket due to the influence of external forces (such as the vibration caused by the user opening the dishwasher 1 at the end of drying). At this time, the drying has ended, and if drying is needed, the drying needs to be started again; or the water stains on the upper-layer bowl basket drip onto the lower-layer bowl basket during the drying process. If it drips in the first half of the drying stage, the influence is not great. If it drips in the second half of the drying stage, the influence is relatively large because generally the drying power during the drying stage of the dishwasher 1 is not constant and usually decreases with time to save energy. Therefore, the drying power in the second half is relatively low, and the drying effect on the dripping water stains is not ideal.

[0043] Furthermore, regarding the pre-washing function of the blowing mechanism 2 in this embodiment, it should be noted that in the actual application process, a key cleaning tableware placement area can be demarcated inside the dishwasher 1. For example, the range of the key cleaning tableware placement area can be marked with colors on the bowl basket to guide the user to place the tableware with stubborn stains in this area. Then the blowing mechanism 2 can directly perform pre-washing on the key cleaning tableware placement area. At the same time, an image sensor can be set to judge whether there is tableware in the key cleaning tableware placement area during washing, so as to decide whether to perform pre-washing through the blowing mechanism 2.

[0044] Preferably, control valves 5 are respectively arranged on the air inlet pipeline 3 and the liquid inlet pipeline 4. The control valve 5 is used to control the on-off of the corresponding pipeline when the spraying mechanism 2 switches functions, so as to match the corresponding spraying function.

[0045] Furthermore, the spraying control assembly 22 can drive the spray head 21 to move to adjust its spraying direction, so that the movement path range of the spraying landing point of the spray head 21 on the bowl basket covers the bowl basket. The spraying liquid or air flow can be carried out along a preset path to spray each position of the bowl basket. The preset path can refer to the S-shaped path in the attached drawing Figure 3 .

[0046] Furthermore, referring to the attached drawing Figure 2 , the spraying control assembly 22 includes a first servo motor 221 and a second servo motor 222. The first output shaft of the first servo motor 221 is connected to the spray head 21, and the second output shaft of the second servo motor 222 is connected to the first servo motor 221, and the first output shaft and the second output shaft are orthogonal to each other. The first servo motor 221 adjusts the tilting angle of the spray head 21 in the vertical plane, so as to realize the movement of the spraying landing point along the left-right direction path in the horizontal plane; the second servo motor 222 drives the whole formed by the first servo motor 221 and the spray head 21, so as to realize the movement of the spraying landing point along the front-back direction path in the horizontal plane, and an S-shaped path as shown in the attached drawing Figure 3 can be formed.

[0047] Furthermore, the spraying mechanism 2 is arranged at a position near the side above the upper bowl basket, and the spraying direction of the spraying mechanism 2 faces the upper bowl basket, referring to the attached drawing Figure 1 ; or the spraying mechanism 2 is arranged at a position near the side between the lower bowl basket and the upper bowl basket, and the spraying direction of the spraying mechanism 2 can face the upper bowl basket above. The installation position of the spraying mechanism 2 can be determined according to actual needs. Installing above the upper bowl basket can basically only spray the upper bowl basket; installing between the upper bowl basket and the lower bowl basket can spray both the upper bowl basket and the lower bowl basket, but when spraying the upper bowl basket, the spraying direction is upward, and the fluid needs to overcome its own gravity, which will affect its output kinetic energy. Therefore, it has a certain impact on the spraying effect of the fluid.

[0048] Embodiment 2

[0049] Referring to the attached drawing Figure 4 , an embodiment of the present invention provides a control method for a dishwasher, including:

[0050] Step S100: Determine the operation stage that the dishwasher is to enter, and make the spraying mechanism of the dishwasher enter the corresponding operation mode according to the operation stage;

[0051] Step S200: Determine that the operating phase the dishwasher is about to enter is the washing phase, cause the spraying mechanism to enter the pre-washing mode, cause the spraying mechanism to spray cleaning liquid (water or other detergents) towards the upper basket and / or the lower basket of the dishwasher, adjust the spraying landing points of the spraying mechanism on the basket so that the spraying landing points move along a preset S-shaped path on the basket for a predetermined number of times or a predetermined duration, and make the range corresponding to the movement of the spraying landing points along the preset path cover the entire basket or a predetermined area on the basket;

[0052] Step S210: Increase the spraying duration or the number of spraying times for the target area on the upper basket and / or the lower basket, where the target area is the area far from the spray head of the spraying mechanism and / or the placement area of the key cleaning tableware.

[0053] Step S300: After the pre-washing is completed, cause the dishwasher to enter the washing phase, cut off the supply of the cleaning liquid to the spraying mechanism, put in dishwashing powder and start the spray arm to work normally.

[0054] Step S400: Determine that the operating phase the dishwasher is about to enter is the drying phase, cause the spraying mechanism to enter the pre-drying mode, cause the spraying mechanism to spray air towards the upper basket of the dishwasher, adjust the spraying landing points of the spraying mechanism on the basket so that the spraying landing points move along a preset S-shaped path on the basket for a predetermined number of times or a predetermined duration, and make the range corresponding to the movement of the spraying landing points along the preset path cover the basket.

[0055] Step S500: After the pre-drying is completed, cause the dishwasher to enter the drying phase, start the drying fan of the dishwasher, and dry the entire inner cavity of the dishwasher.

[0056] Specifically, since the water stains on the upper basket and the tableware have been processed (pre-dried or have dripped) in the pre-drying mode, there will be no problem that the water stains on the upper basket and the tableware drip onto the already dried lower tableware, causing the lower tableware to need to be dried repeatedly.

[0057] Embodiment 3

[0058] An embodiment of the present invention provides a control device for a dishwasher, including:

[0059] An operating mode determination module, which is used to determine the operating phase the dishwasher is about to enter and cause the spraying mechanism of the dishwasher to enter the corresponding operating mode according to the operating phase;

[0060] A spraying mechanism control module, which is used to control the spraying mechanism to spray cleaning liquid or spray air towards the corresponding basket of the dishwasher according to the corresponding operating mode.

[0061] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "bottom", "top", "front", "rear", "inner", "outer", "left", "right", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation on the present invention.

[0062] Although the present invention has been described herein with reference to specific embodiments, it should be understood that these embodiments are merely examples of the principles and applications of the present invention. Therefore, it should be understood that many modifications can be made to the exemplary embodiments, and other arrangements can be designed, as long as they do not depart from the spirit and scope of the present invention as defined by the appended claims. It should be understood that the different dependent claims and the features described herein can be combined in a manner different from that described in the original claims. It should also be understood that the features described in connection with a single embodiment can be used in other described embodiments.

Claims

1. A dishwasher, characterized in that, A spray arm and a blowing mechanism are provided inside the dishwasher. The blowing mechanism includes a blowing head and a blowing control component connected to the blowing head. The blowing head is respectively connected with an air inlet pipeline and a liquid inlet pipeline. The blowing direction of the blowing head can at least point to the upper basket of the dishwasher. The blowing control component can control the position of the blowing landing point of the blowing head on the basket. The blowing control component can drive the blowing head to move to adjust its blowing direction, so that the range corresponding to the movement path of the blowing landing point of the blowing head on the basket covers the basket. The blowing control component includes a first servo motor and a second servo motor. The first output shaft of the first servo motor is connected to the blowing head. The second output shaft of the second servo motor is connected to the first servo motor, and the first output shaft and the second output shaft are orthogonal to each other. The blowing mechanism is arranged at a position near the side above the upper basket, and the blowing direction of the blowing mechanism faces the upper basket; or The blowing mechanism is arranged at a position near the side between the lower basket and the upper basket, and the blowing direction of the blowing mechanism can face the upper basket above.

2. The dishwasher according to claim 1, characterized in that, Control valves are respectively arranged on the air inlet pipeline and the liquid inlet pipeline.

3. A control method for a dishwasher, characterized in that, The dishwasher includes the dishwasher according to any one of claims 1-2, and further includes: Determine the operation stage that the dishwasher is to enter, and according to the operation stage, make the blowing mechanism of the dishwasher enter the corresponding operation mode. If the operation stage that the dishwasher is to enter is the washing stage, then make the blowing mechanism enter the pre-washing mode, and make the blowing mechanism spray cleaning liquid towards the upper basket and / or the lower basket of the dishwasher. If the operation stage that the dishwasher is to enter is the drying stage, then make the blowing mechanism enter the pre-drying mode, and make the blowing mechanism spray air towards the upper basket of the dishwasher.

4. The control method of the dishwasher according to claim 3, wherein, Further includes: Adjust the spraying landing point of the blowing mechanism on the basket, so that the spraying landing point moves along a preset path on the basket for a predetermined number of times or a predetermined duration, and the range corresponding to the movement of the spraying landing point along the preset path covers the basket.

5. The control method of the dishwasher according to claim 3 or 4, characterized in that, Further includes: When making the blowing mechanism spray cleaning liquid towards the upper basket and / or the lower basket of the dishwasher, increase the spraying duration or the spraying frequency of the target area on the upper basket and / or the lower basket.

6. The control method of the dishwasher according to claim 5, characterized in that, The target area is the area far from the blowing head of the blowing mechanism and / or the placement area of the key cleaning tableware.

7. The control method of the dishwasher according to claim 4, characterized in that, The preset path is an S-shaped path.

8. A control device for implementing the control method according to any one of claims 3 to 7, characterized in that, Includes: An operation mode determination module, which is used to determine the operation stage that the dishwasher is to enter and make the blowing mechanism of the dishwasher enter the corresponding operation mode according to the operation stage. A blowing mechanism control module, which is used to control the blowing mechanism to spray cleaning liquid or spray air towards the corresponding basket of the dishwasher according to the corresponding operation mode.

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