A washing machine and a control method thereof

Abstract

The embodiment of the present application discloses a washing machine and a control method thereof, which comprises an inner drum, an outer barrel and a heat exchange structure, the inner drum is sealingly connected in the outer barrel, the outer barrel is connected with a heating structure, and the heat exchange structure is rotationally connected in the outer barrel. Through the washing machine of the embodiment of the present application, water does not exist between the washing barrel and the outer barrel, the heat exchange efficiency of the washing machine is strengthened, and the washing ratio is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of washing machines, and in particular to a washing machine and a control method thereof. Background Art

[0002] With the continuous development of washing machine technology, washing machines have become increasingly large-capacity. This trend inevitably leads to an increase in the overall size of washing machines. At the same time, in existing washing machines, water is distributed between the washing tub and the outer tub during washing, meaning there is also water between the outer tub and the washing tub. This results in a large amount of water consumption and waste of water resources. Dirt easily accumulates between the outer tub and the washing tub, breeding bacteria. Furthermore, because there is water between the outer tub and the washing tub, a large amount of detergent is used, resulting in a waste of detergent resources and a cost-effectiveness. To address this issue, related technologies have proposed washing machines that use the washing tub as a water storage tub. However, since the washing tub is a rotating tub, it cannot directly heat the water in the washing tub, significantly limiting its function of heated water washing.

[0003] Chinese patent CN106032633B discloses a washing machine and its control method. The inner barrel is provided with drainage holes only at the upper part of the barrel body, and the other parts are sealed. The inner barrel is a water storage barrel, and the cavity between the inner and outer barrels constitutes a water heating space. The water heating space is connected to the inner barrel through a circulating water system, and the heated water is introduced into the inner barrel. However, this processing temperature is prone to cause local problems that are too high, resulting in slow heat exchange efficiency.

[0004] Therefore, it is necessary to design a new method to achieve the absence of water between the washing tub and the outer tub, enhance the heat exchange efficiency of the washing machine, and improve the cleaning ratio. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a washing machine and a control method thereof.

[0006] In order to solve the above technical problems, the purpose of the present invention is achieved through the following technical solutions: A washing machine is provided, comprising: an inner drum, an outer barrel and a heat exchange structure, the inner drum is sealed and connected to the outer barrel, a heating structure is connected to the outer barrel, and the heat exchange structure is rotatably connected to the outer barrel.

[0007] A further technical solution is as follows: a clutch structure is connected inside the outer barrel, and the heat exchange structure is connected to the clutch structure.

[0008] A further technical solution is as follows: the heat exchange structure includes a connecting ring and a plurality of blades, the plurality of blades are connected to the connecting ring at intervals, and the connecting ring is connected to the clutch structure.

[0009] A further technical solution is as follows: the lower end of the inner cylinder is connected to a cylinder bottom, and a heat exchange hole is provided on the cylinder bottom.

[0010] A further technical solution is as follows: the bottom of the cylinder is connected to a waterproof cover through a connecting structure, and the heating structure is connected inside the waterproof cover.

[0011] A further technical solution is as follows: the connection structure includes a flange and a connecting piece, the flange is connected to the cylinder bottom, the connecting piece is connected to the flange, and the waterproof cover is rotatably connected to the connecting piece.

[0012] A further technical solution is: the flange is connected to the cylinder bottom through a fastener.

[0013] A further technical solution is as follows: the clutch structure includes a clutch, a dehydration shaft is provided on the clutch, and the heat exchange structure is connected to the dehydration shaft.

[0014] A further technical solution is as follows: a water-permeable hole is provided on the outer barrel.

[0015] In addition, the technical problem to be solved by the present invention is to provide a control method for a washing machine, which is characterized by comprising:

[0016] Detecting the current water level frequency of the washing machine, and if the current water level frequency meets the first setting requirement, turning on the heating structure and detecting the real-time water level frequency, water temperature and outer tub temperature;

[0017] During the heating operation, the water level frequency is detected and recorded at set intervals to obtain detection data;

[0018] When the detection data meets the second setting requirement, the heat exchange structure is turned on to detect and record the temperature difference between the water temperature and the outer barrel temperature within any interval time period;

[0019] Match different heat exchange programs according to temperature difference to carry out heat exchange;

[0020] When the water temperature is detected and recorded to be no less than the set threshold within any set time period, the heating structure is turned off.

[0021] The beneficial effects of the present invention compared with the prior art are: the present invention seals the inner drum in the outer drum to ensure that there is no water between the inner drum and the outer drum, and a heating structure is connected to the outer drum, and a rotatable heat exchange structure is provided in the outer drum. With the help of the heat exchange structure, the heat of the heating structure is transferred to the washing water in the inner drum, so that there is no water between the washing drum and the outer drum, thereby enhancing the heat exchange efficiency of the washing machine and improving the cleaning ratio.

[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 A schematic cross-sectional view of a washing machine provided in an embodiment of the present invention;

[0025] Figure 2 A schematic diagram of a three-dimensional cross-section structure of a washing machine provided by an embodiment of the present invention;

[0026] Figure 3 A schematic flow chart of a method for controlling a washing machine provided by an embodiment of the present invention;

[0027] Description of the symbols in the figure:

[0028] 1. Outer barrel; 2. Balancing ring; 3. Inner barrel; 4. Bottom of barrel; 5. Impeller; 6. Flange; 61. Connector; 7. Clutch; 8. Waterproof cover; 9. Heating structure; 10. Heat exchange hole; 11. Heat exchange structure; 12. Temperature sensor. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0030] It will be understood that when used in this specification and the appended claims, the terms “comprises” and “comprising” indicate the presence of described features, integers, steps, operations, elements and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof.

[0031] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the present invention. As used in the specification and appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms unless the context clearly indicates otherwise.

[0032] It should be further understood that the term "and / or" used in the present description and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

[0033] See also Figure 1 , Figure 1 This is a schematic diagram of the cross-sectional structure of a washing machine provided by an embodiment of the present invention. The washing machine adopts a waterless heating method between barrels, utilizes a temperature control program, and combines a heat exchange structure 11 to enhance heat exchange efficiency and improve cleaning ratio.

[0034] See also Figure 1 The above-mentioned washing machine includes: an inner drum 3, an outer drum 1 and a heat exchange structure 11. The inner drum 3 is sealed and connected to the outer drum 1. The outer drum 1 is connected to a heating structure 9. The heat exchange structure 11 is rotatably connected to the outer drum 1.

[0035] The inner drum 3 is sealed and connected to the outer drum 1, which can ensure that there is no washing water between the inner drum 3 and the outer drum 1. In addition, the heating structure 9 is connected to the outer drum 1 to heat the washing water. With the help of the heat exchange structure 11, the heat exchange structure 11 is started to perform heat exchange according to the temperature difference between the washing water temperature and the temperature of the inner drum 3.

[0036] In one embodiment, see Figure 1 The outer barrel 1 is connected to a clutch structure, and the heat exchange structure 11 is connected to the clutch structure.

[0037] Specifically, the clutch structure includes but is not limited to the clutch 7 , and the heat exchange structure 11 is driven to rotate by the clutch structure, thereby simplifying the overall internal structure.

[0038] In one embodiment, see Figure 2 , Figure 2 It is a schematic diagram of a three-dimensional cross-sectional structure of a washing machine provided by an embodiment of the present invention; the above-mentioned heat exchange structure 11 includes a connecting ring and a plurality of fan blades, the plurality of fan blades are connected to the connecting ring at intervals, and the connecting ring is connected to the clutch structure.

[0039] The fan blades rotate synchronously with the clutch mechanism, transferring heat from the heating structure 9 to the heat exchange holes 10, achieving heat exchange with the wash water. The rotation of the clutch 7 drives the heat exchange structure 11 to rotate synchronously. This rotation of the heat exchange structure 11 helps to enhance the turbulence of the wash water, improve the efficiency of the wash water passing through the heat exchange holes 10, enhance heat exchange efficiency, and improve the cleaning ratio.

[0040] In one embodiment, see Figure 1 and Figure 2 The clutch structure includes a clutch 7, a dehydration shaft is provided on the clutch 7, and a heat exchange structure 11 is connected to the dehydration shaft.

[0041] Specifically, the connecting ring of the heat exchange structure 11 is magnetically connected to the spline on the dehydration shaft of the clutch 7 .

[0042] In one embodiment, see Figure 2 The lower end of the inner drum 3 is connected to the drum bottom 4 , and the drum bottom 4 is provided with a heat exchange hole 10 . During the rotation of the heat exchange structure 11 , it is beneficial to enhance the disturbance of the washing water and improve the efficiency of the washing water passing through the heat exchange hole 10 .

[0043] In one embodiment, see Figure 1 and Figure 2 The above-mentioned cylinder bottom 4 is connected to the waterproof cover 8 through a connecting structure, and the heating structure 9 is connected inside the waterproof cover 8.

[0044] The waterproof cover 8 can further prevent the washing water in the inner drum 3 from entering between the inner drum 3 and the outer barrel 1, thereby ensuring that there is no water between the barrels. Connecting the heating structure 9 in the waterproof cover 8 can achieve the purpose of no water between the inner drum 3 and the outer barrel 1 and heating the washing water in the inner drum 3.

[0045] In one embodiment, see Figure 1 and Figure 2 The above-mentioned connection structure includes a flange 6 and a connecting piece 61. The flange 6 is connected to the cylinder bottom 4, the connecting piece 61 is connected to the flange 6, and the waterproof cover 8 is rotatably connected to the connecting piece 61.

[0046] In one embodiment, see Figure 1 and Figure 2 The above-mentioned flange 6 is connected to the cylinder bottom 4 through fasteners.

[0047] In one embodiment, the outer tub 1 is provided with a water-permeable hole, which can be used to drain the washing water.

[0048] Specifically, the inner cylinder 3 is a hole-free inner cylinder 3, the inner cylinder 3 is riveted to the cylinder bottom 4, the flange 6 and the cylinder bottom 4 are fastened with screws, the connecting piece 61 is fixedly connected to the flange 6, the waterproof cover 8 is rotationally sealed with the connecting piece 61, the clutch structure and the outer barrel 1 are fastened with screws and fixed to the flange 6, thereby sealing other channels between the inner cylinder 3 and the outer barrel 1 to ensure that there is no water between the inner cylinder 3 and the outer barrel 1.

[0049] In this embodiment, the heating structure 9 is but not limited to a heating ring.

[0050] In one embodiment, temperature sensors 12 are provided in the outer tub 1 and the inner tub 3 for detecting the temperature of the outer tub 1 and the temperature of the washing water in the inner tub 3 .

[0051] The temperature sensor 12 is but not limited to a non-contact temperature sensor 12 .

[0052] In this embodiment, the height of the entire assembly of the inner cylinder 3 is 360mm-400mm, the height of the inner cylinder 3 is 280mm-300mm in diameter, the diameter of the heating structure 9 is 6mm-10mm, the annular diameter of the heating structure 9 is 180mm-200mm, the power of the heating structure 9 is 1000w-1500w, the vertical distance of the heating structure 9 from the waterproof cover 8 is 10mm-15mm, the radial distance of the heating structure 9 from the waterproof cover 8 is 10mm-30mm, and the effective cross-sectional area of ​​the water-permeable hole is 600mm. 2 -1000mm 2 , the effective diameter of the heat exchange structure 11 is 50mm-100mm.

[0053] In one embodiment, see Figure 1 and Figure 2 The bottom of the inner drum 3 is connected with a pulsator 5 to achieve the purpose of stirring the washing water in the inner drum 3.

[0054] In one embodiment, see Figure 1 and Figure 2 The top of the inner drum 3 is connected with a balance ring 2, which is used to prevent the inner drum 3 from shaking too much during the disturbance of the washing water in the inner drum 3.

[0055] In this embodiment, the control process of the entire washing machine is as follows: start the heating process, set the water level frequency to WL, set the outer tub 1 temperature to WT, and set the maximum heating time to T; open the water inlet valve to perform water inlet operation, detect the current water level frequency SW1, if SW1-WL≥Ahz, then SW1=SW1+1, and execute the detection of the current water level frequency SW1; if SW1-WL<Ahz, then turn on the heating structure 9, start the timer, record the time T1, start heating, detect the real-time water level frequency SW2, detect the real-time temperature of the temperature sensor 1 WT0, and the temperature of the temperature sensor 2 WT0'; during the heating operation, detect and Record the water level frequency SW3. If SW3-WL≥Bhz, turn on the heat exchange structure 11, detect and record the temperature difference between WT0 and WT0' within any ΔTs, which is divided into three temperature difference stages: WT0-WT0'≤10℃ matches the low heat exchange program, 10℃≤WT0-WT0'≤20℃ matches the medium heat exchange program, and WT0-WT0'≥20℃ matches the high heat exchange program. In this way, the heat exchange program suitable for the built-in is matched. If the water temperature WT0≥90℃ within any 10s is detected and recorded, the heating is terminated. If it does not meet the requirements, the cycle is repeated until the set temperature requirement is reached and the heating is completed. When SW3-WL <Bhz,则SWn=SWn+1,并执行在加热运行过程中,每隔Tmin检测并记录水位频率SW3。

[0056] Among them, Ahz refers to the water level frequency difference threshold corresponding to the first setting requirement; Bhz refers to the water level frequency difference threshold corresponding to the second setting requirement.

[0057] The above-mentioned washing machine ensures that there is no water between the inner drum 3 and the outer drum 1 by sealingly connecting the inner drum 3 in the outer drum 1, and a heating structure 9 is connected in the outer drum 1, and a rotatable heat exchange structure 11 is provided in the outer drum 1. With the help of the heat exchange structure 11, the heat of the heating structure 9 is transferred to the washing water in the inner drum 3, so that there is no water between the washing drum and the outer drum 1, thereby enhancing the heat exchange efficiency of the washing machine and improving the cleaning ratio.

[0058] In one embodiment, see Figure 3 , also provides a control method for a washing machine, including the following steps S110 to S150.

[0059] S110, detecting the current water level frequency of the washing machine. If the current water level frequency meets the first setting requirement, turning on the heating structure 9 and detecting the real-time water level frequency, water temperature, and temperature of the inner drum 3;

[0060] S120, during the heating operation, detecting and recording the water level frequency at set intervals to obtain detection data;

[0061] S130: When the detection data meets the second set requirement, the heat exchange structure 11 is turned on to detect and record the temperature difference between the water temperature and the temperature of the inner drum 3 within any interval time period;

[0062] S140, performing heat exchange by matching different heat exchange programs according to the temperature difference;

[0063] S150: When it is detected and recorded that the water temperature within any set time period is not less than the set threshold, the heating structure 9 is turned off.

[0064] It should be noted that those skilled in the art can clearly understand that the specific implementation process of the above-mentioned control method of a washing machine can refer to the corresponding description in the above-mentioned washing machine embodiment. For the convenience and brevity of description, it will not be repeated here.

[0065] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and such modifications or substitutions are intended to be within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope of protection of the claims.

Claims

1. A washing machine, characterized in that: include: An inner barrel, an outer barrel, and a heat exchange structure, wherein the inner barrel is sealed and connected to the outer barrel, a heating structure is connected to the outer barrel, and the heat exchange structure is rotatably connected to the outer barrel; A clutch structure is connected to the outer barrel, and the heat exchange structure is connected to the clutch structure; The heat exchange structure includes a connecting ring and a plurality of blades, wherein the plurality of blades are connected to the connecting ring at intervals, and the connecting ring is connected to the clutch structure; The lower end of the inner cylinder is connected to a cylinder bottom, and the cylinder bottom is provided with a heat exchange hole; During the rotation of the heat exchange structure, it is beneficial to enhance the disturbance of the washing water and improve the efficiency of the washing water passing through the heat exchange holes.

2. A washing machine according to claim 1, characterized in that: The bottom of the cylinder is connected to a waterproof cover through a connecting structure, and the heating structure is connected inside the waterproof cover.

3. A washing machine according to claim 2, characterized in that: The connection structure includes a flange and a connecting piece, the flange is connected to the cylinder bottom, the connecting piece is connected to the flange, and the waterproof cover is rotatably connected to the connecting piece.

4. A washing machine according to claim 3, characterized in that: The flange is connected to the cylinder bottom via fasteners.

5. The washing machine according to claim 1, characterized in that: The clutch structure includes a clutch, a dehydration shaft is provided on the clutch, and the heat exchange structure is connected to the dehydration shaft.

6. The washing machine according to claim 1, characterized in that: The outer barrel is provided with a water permeable hole.

7. A control method for the washing machine according to any one of claims 1 to 6, characterized in that: include: Detecting the current water level frequency of the washing machine, and if the current water level frequency meets the first setting requirement, turning on the heating structure and detecting the real-time water level frequency, water temperature and outer tub temperature; During the heating operation, the water level frequency is detected and recorded at set intervals to obtain detection data; When the detection data meets the second setting requirement, the heat exchange structure is turned on to detect and record the temperature difference between the water temperature and the outer barrel temperature within any interval time period; Match different heat exchange programs according to temperature difference to carry out heat exchange; When the water temperature is detected and recorded to be no less than the set threshold within any set time period, the heating structure is turned off.

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