Dishwasher anti-scaling device, anti-scaling method and dishwasher

Abstract

The present invention provides a scale prevention device for a dishwasher, a scale prevention method and a dishwasher. The scale prevention device includes: a coil assembly, which includes a plurality of electromagnetic coils, and at least a part of the plurality of electromagnetic coils are respectively wound around the water delivery pipe, the water storage cup and the inner tank of the dishwasher; and an electromagnetic generator, which is electrically connected to the coil assembly and is used to control the generation of the magnetic field and the intensity of the generated magnetic field by controlling the electromagnetic coils. Based on the technical solution of the present invention, the magnetic field generated by the electromagnetic coils acts on the ions in the water. Under the action of the high-frequency electromagnetic field, the ions lose their chemical, physical and mutual attraction abilities, gradually form crystal clusters and sink to the bottom, and then are discharged through the drain pipe, so that they will not precipitate and form scale on the wall surfaces of the corresponding components, achieving the effect of preventing scale in the dishwasher.

Description

Technical Field

[0001] The present invention relates to the technical field of dishwashers, and particularly to a scale prevention device for a dishwasher, a scale prevention method, and a dishwasher. Background Art

[0002] With the improvement of people's living standards, dishwashers have gradually entered ordinary families. There is an inevitable physical phenomenon commonly existing in the heating process of dishwashers: as the usage time increases, magnesium and calcium ions originally dissolved in water precipitate to form scale, which adheres to the heater, the inner wall of the inner tank, and the tableware. Adhering to the heater will affect heat transfer, resulting in uneven heat dissipation of the heater, easy damage, and even causing danger.

[0003] In the prior art, large dishwashers are equipped with a water softening device, but users need to regularly add water softening salt to continuously ensure the water softening function; small dishwashers require users to manually remove scale, and the descaling period also needs to be judged by users themselves, and the substances used for descaling are often chemical substances. Incomplete cleaning may affect human health.

[0004] Therefore, the present invention proposes a scale prevention device for a dishwasher, a scale prevention method, and a dishwasher, adopting a brand-new scale prevention means to solve the scale problem. Summary of the Invention

[0005] In order to solve the above problems existing in the prior art scale prevention means, the present invention proposes a scale prevention device for a dishwasher, a scale prevention method, and a dishwasher.

[0006] In a first aspect, a scale prevention device for a dishwasher proposed by the present invention includes:

[0007] A coil assembly, which includes a plurality of electromagnetic coils, and at least some of the plurality of electromagnetic coils are respectively wound around the water delivery pipe, the water storage cup, and the inner tank of the dishwasher; and

[0008] An electromagnetic generator, which is electrically connected to the coil assembly and is used to control the generation of a magnetic field and the intensity of the generated magnetic field by controlling the electromagnetic coils.

[0009] In an embodiment, the electromagnetic coil wound around the inner tank of the dishwasher is composed of at least three coil units, and at least one of the coil units corresponds to the bottom, side, and top of the inner tank respectively.

[0010] In an embodiment, a sensor is further included, and the sensor is disposed in the water storage cup of the dishwasher and is used to detect the crystal concentration of the water in the water storage cup, and the sensor is electrically connected to the electromagnetic generator.

[0011] In a second aspect, a scale prevention method for a dishwasher proposed by the present invention is characterized by including:

[0012] According to the start-up operation instruction of the dishwasher, turn on the first electromagnetic coil in the coil assembly that is wound around the water delivery pipe of the dishwasher;

[0013] Determine the operation stage of the dishwasher;

[0014] According to the operation stage, control the on / off states of the second electromagnetic coil and the third electromagnetic coil in the coil assembly that are respectively wound around the water storage cup and the inner container of the dishwasher.

[0015] In one embodiment, controlling the on / off states of the second electromagnetic coil and the third electromagnetic coil in the coil assembly that are respectively wound around the water storage cup and the inner container of the dishwasher according to the operation stage includes:

[0016] When the operation stage is the washing stage, turn on the second electromagnetic coil and the third electromagnetic coil;

[0017] When the operation stage is other stages than the washing stage, turn off the second electromagnetic coil and the third electromagnetic coil.

[0018] In one embodiment, it further includes:

[0019] During the washing stage, obtain the crystal impurity concentration of the water in the water storage cup of the dishwasher;

[0020] According to the crystal impurity concentration, control the on / off states of the second electromagnetic coil and the third electromagnetic coil.

[0021] In one embodiment, controlling the on / off states of the second electromagnetic coil and the third electromagnetic coil according to the crystal impurity concentration includes:

[0022] Determine the growth value of the crystal impurity concentration within a preset time period;

[0023] Judge the magnitude relationship between the growth value and a preset value;

[0024] If the growth value is less than the preset value, reduce the magnetic field intensity of the second electromagnetic coil and the third electromagnetic coil or turn off the second electromagnetic coil and the third electromagnetic coil;

[0025] Otherwise, keep the second electromagnetic coil and the third electromagnetic coil turned on.

[0026] In one embodiment, when turning on the second electromagnetic coil and the third electromagnetic coil, it further includes:

[0027] Control the magnetic field intensity of the second electromagnetic coil to be less than the magnetic field intensity of the first electromagnetic coil;

[0028] Control the magnetic field intensity of the coil unit corresponding to the bottom of the dishwasher inner tank in the third electromagnetic coil to be greater than that of the coil units corresponding to the top and side surfaces of the dishwasher inner tank.

[0029] Thirdly, a dishwasher scale prevention device proposed by the present invention is characterized by comprising:

[0030] A first coil control module, which is used to conduct the first electromagnetic coil wound on the water delivery pipe of the dishwasher in the coil assembly according to the startup operation instruction of the dishwasher;

[0031] An operation stage detection module, which is used to determine the operation stage of the dishwasher;

[0032] A second coil control module, which is used to control the on / off of the second electromagnetic coil and the third electromagnetic coil respectively wound on the water storage cup and the inner tank of the dishwasher in the coil assembly according to the operation stage.

[0033] Fourthly, a dishwasher proposed by the present invention includes the dishwasher scale prevention device as described above, and thus has all the technical effects thereof.

[0034] 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.

[0035] A dishwasher scale prevention device, a scale prevention method and a dishwasher provided by the present invention, compared with the prior art, at least have the following beneficial effects:

[0036] A dishwasher scale prevention device, a scale prevention method and a dishwasher of the present invention act on ions in water by using the magnetic field generated by the electromagnetic coil. Under the action of the high-frequency electromagnetic field, the ions lose their chemical, physical and mutual attraction abilities, gradually form crystal clusters and sink to the bottom, and then are discharged through the drain pipe, so that they will not precipitate and form scale on the wall surfaces of the corresponding components, realizing the effect of preventing scale in the dishwasher. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Hereinafter, the present invention will be described in more detail based on embodiments and with reference to the drawings. Among them:

[0038] Figure 1 Shows a schematic structural diagram of the scale prevention device of the present invention installed inside the dishwasher.

[0039] In the drawings, the same components are denoted by the same reference numerals. The drawings are not drawn to actual scale.

[0040] Reference numerals:

[0041] 1 - Coil assembly, 11 - First electromagnetic coil, 12 - Second electromagnetic coil, 13 - Third electromagnetic coil, 2 - Electromagnetic generator, 3 - Water delivery pipe, 4 - Water storage cup, 5 - Inner container. Detailed implementation mode

[0042] The present invention will be further described below in conjunction with the accompanying drawings.

[0043] Embodiment 1

[0044] An embodiment of the present invention provides a scale prevention device for a dishwasher, including:

[0045] A coil assembly 1, which includes a plurality of electromagnetic coils, and the plurality of electromagnetic coils are at least respectively wound around the water delivery pipe 3, the water storage cup 4, and the inner container 5 of the dishwasher; and

[0046] An electromagnetic generator 2, which is electrically connected to the coil assembly 1 and is used to control the generation of the magnetic field and the intensity of the generated magnetic field by controlling the electromagnetic coils.

[0047] Specifically, as shown in the accompanying drawings Figure 1 The scale prevention device of the present invention mainly uses an electromagnetic field to achieve the scale prevention effect. The coil assembly 1 of the present invention at least includes a first electromagnetic coil 11, a second electromagnetic coil 12, and a third electromagnetic coil 13 that are respectively wound around the water delivery pipe 3 (including the inlet and outlet pipes of the water pump and the whole machine drain pipe), the water storage cup 4, and the inner container 5 of the dishwasher. The electromagnetic coils are evenly distributed and need to ensure that the entire contact surface is covered. By controlling the current input and the magnitude of the current input for each electromagnetic coil by the electromagnetic generator 2, the corresponding intensity of the electromagnetic field is generated at the corresponding components. Under the action of the high-frequency electromagnetic field, Ca2+, Mg2+ and each bicarbonate ion in the bicarbonate in water will lose their chemical, physical and mutual attraction abilities, gradually form crystal clusters and sink to the bottom, and then be discharged through the drain pipe, so that they will not precipitate on the wall surface of the corresponding components to form scale, realizing the scale prevention effect of the dishwasher.

[0048] Further, the electromagnetic coil wound around the inner container 5 of the dishwasher is composed of at least three coil units, and at least one coil unit corresponds to the bottom, side and top of the inner container 5 respectively.

[0049] Specifically, the third electromagnetic coil 13 is divided into a plurality of coil units, and the magnetic field and the magnetic field intensity of each coil unit can be controlled respectively, so as to carry out targeted prevention and control for different degrees of scale formation possibilities existing in different positions. The bottom of the inner container 5 of the dishwasher is the concentrated area of the dishwashing water, while the water volume on the side and top is small; therefore, the degree of possible scale formation at the bottom is high and the magnetic field intensity needs to be increased, while the magnetic field intensity required for the top and side can be relatively small; which is conducive to the reasonable use of energy.

[0050] Further, it further includes a sensor disposed in the water storage cup 4 of the dishwasher for detecting the crystal concentration of the water in the water storage cup 4, and the sensor is electrically connected to the electromagnetic generator 2.

[0051] Specifically, the sensor (not shown in the drawings) is used to detect the concentration of crystal impurities formed by ions in the water at the water storage cup 4 under the action of the magnetic field, and then judge the possibility of scale formation again, so as to control the operation of the corresponding electromagnetic coil. The greater the concentration of crystal impurities in the water, the more ions have precipitated, the fewer remaining ions in the water, and the smaller the possibility of subsequent scale formation. The magnetic field intensity can be reduced or the magnetic field can be turned off. Or detect the change value of the concentration of crystal impurities within a certain period of time. The smaller the change, the more ions have basically precipitated, and the smaller the possibility of subsequent scale formation. The magnetic field intensity can be reduced or the magnetic field can be turned off.

[0052] Embodiment 2

[0053] An embodiment of the present invention provides a method for preventing scale formation in a dishwasher, including:

[0054] Step S100: According to the startup operation instruction of the dishwasher, turn on the first electromagnetic coil wound around the water delivery pipe of the dishwasher in the coil assembly.

[0055] Specifically, since there is liquid flow to varying degrees at the water delivery pipe in different stages of the dishwasher, and the size of the water delivery pipe is small, even slight scale formation will have a greater impact. Therefore, the first electromagnetic coil starts synchronously when the dishwasher is started.

[0056] Step S200: Determine the operation stage of the dishwasher, and the operation stage includes a water inlet stage, a washing stage, and a drainage stage.

[0057] Step S300: According to the operation stage, control the on-off of the second electromagnetic coil and the third electromagnetic coil wound around the water storage cup and the inner tank of the dishwasher in the coil assembly.

[0058] Step S310: When the operation stage is the washing stage, turn on the second electromagnetic coil and the third electromagnetic coil, control the magnetic field intensity of the second electromagnetic coil to be less than that of the first electromagnetic coil; control the magnetic field intensity of the coil unit corresponding to the bottom of the inner tank of the dishwasher in the third electromagnetic coil to be greater than that of the coil units corresponding to the top and side of the inner tank of the dishwasher.

[0059] Specifically, during the washing stage, water flow will truly enter the water storage cup and the inner tank of the dishwasher. Under the action of synchronous heating inside the dishwasher, it will exacerbate the formation of scale by ions in the water. At this time, the second electromagnetic coil and the third electromagnetic coil need to be activated. And since along the water flow direction, ions in the water continuously form crystal impurities under the action of the magnetic field, the concentration of the remaining ions in the water decreases. Therefore, the magnetic field intensity can be correspondingly reduced, so that the magnetic field intensities of the second electromagnetic coil and even the third electromagnetic coil can be relatively reduced compared to the first electromagnetic coil. In addition, the bottom of the inner tank of the dishwasher is the concentrated area of the dishwashing water, while the water volume on the side and the top is small. Therefore, the degree of possible scaling at the bottom is high and the magnetic field intensity needs to be increased, while the magnetic field intensity required for the top and the side can be relatively small, which is beneficial to the rational use of energy.

[0060] Step S311: During the washing stage, obtain the concentration of crystal impurities in the water in the water storage cup of the dishwasher.

[0061] Step S312: Control the on / off of the second electromagnetic coil and the third electromagnetic coil according to the concentration of crystal impurities.

[0062] Step S312a: Determine the growth value of the concentration of crystal impurities within a preset time period.

[0063] Step S312b: Judge the size relationship between the growth value and.

[0064] Step S312c: If the growth value is less than the preset value, reduce the magnetic field intensity of the second electromagnetic coil and the third electromagnetic coil or turn off the second electromagnetic coil and the third electromagnetic coil.

[0065] Step S312d: Otherwise, keep the second electromagnetic coil and the third electromagnetic coil conducting.

[0066] Specifically, after the second electromagnetic coil and the third electromagnetic coil have been conducting for a certain period of time, the change value (growth value) of the concentration of crystal impurities in the water in the water storage cup within a certain time period T is detected by a sensor. When the growth value is greater than the preset value N, it indicates that there are still a large number of crystal impurities precipitating, so the ion concentration in the water is still relatively high and the possibility of scaling is high. Therefore, it is necessary to continue to keep the second electromagnetic coil and the third electromagnetic coil conducting until the subsequent change value meets the conditions. When the growth value is not greater than the preset value N, it indicates that the precipitation amount of crystal impurities is small, the ion concentration in the water decreases, and the possibility of scaling is small. Therefore, the magnetic field intensities of the second electromagnetic coil and the third electromagnetic coil can be relatively reduced (by reducing the current), or the difference between the growth value and the preset value N. When the difference is large, directly turn off the second electromagnetic coil and the third electromagnetic coil.

[0067] Step S320: When the operation stage is other stages except the washing stage, turn off the second electromagnetic coil and the third electromagnetic coil.

[0068] Example 3

[0069] An embodiment of the present invention provides a scale prevention device for a dishwasher, including:

[0070] A first coil control module, which is configured to conduct a first electromagnetic coil wound around a water delivery pipe of the dishwasher in the coil assembly according to a start-up operation instruction of the dishwasher;

[0071] An operation stage detection module, which is configured to determine the operation stage of the dishwasher;

[0072] A second coil control module, which is configured to control the on-off of a second electromagnetic coil and a third electromagnetic coil wound around a water storage cup and an inner tank of the dishwasher in the coil assembly according to the operation stage.

[0073] Example 4

[0074] An embodiment of the present invention provides a dishwasher, including the above-mentioned scale prevention device for a dishwasher, and thus having all the technical effects thereof.

[0075] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "bottom", "top", "front", "rear", "inner", "outer", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, and is 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 therefore should not be construed as a limitation of the present invention.

[0076] 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 deviate from the spirit and scope of the present invention defined by the appended claims. It should be understood that 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 method for preventing scale formation in a dishwasher, characterized in that, Including: According to the start-up operation instruction of the dishwasher, turn on the first electromagnetic coil in the coil assembly that is wound around the water delivery pipe of the dishwasher; Determine the operation stage of the dishwasher; According to the operation stage, control the on / off of the second electromagnetic coil and the third electromagnetic coil in the coil assembly that are respectively wound around the water storage cup and the inner tank of the dishwasher; According to the operation stage, controlling the on / off of the second electromagnetic coil and the third electromagnetic coil in the coil assembly that are respectively wound around the water storage cup and the inner tank of the dishwasher includes: When the operation stage is the washing stage, turn on the second electromagnetic coil and the third electromagnetic coil; When the operation stage is other stages except the washing stage, turn off the second electromagnetic coil and the third electromagnetic coil; During the washing stage, obtain the crystal impurity concentration of the water in the water storage cup of the dishwasher; According to the crystal impurity concentration, control the on / off of the second electromagnetic coil and the third electromagnetic coil.

2. The dishwasher anti-scaling method according to claim 1, wherein According to the crystal impurity concentration, controlling the on / off of the second electromagnetic coil and the third electromagnetic coil includes: Determine the growth value of the crystal impurity concentration within a preset time period; Judge the magnitude relationship between the growth value and a preset value; If the growth value is less than the preset value, reduce the magnetic field intensity of the second electromagnetic coil and the third electromagnetic coil or turn off the second electromagnetic coil and the third electromagnetic coil; Otherwise, keep the second electromagnetic coil and the third electromagnetic coil turned on.

3. The dishwasher anti-scaling method according to claim 1 or 2, characterized in that, When turning on the second electromagnetic coil and the third electromagnetic coil, it further includes: Control the magnetic field intensity of the second electromagnetic coil to be less than that of the first electromagnetic coil; Control the magnetic field intensity of the coil unit corresponding to the bottom of the inner tank of the dishwasher in the third electromagnetic coil to be greater than that of the coil units corresponding to the top and side of the inner tank of the dishwasher.

4. A dishwasher anti-scaling device for removing scale by using the dishwasher anti-scaling method according to any one of claims 1-3, characterized in that, Including: A first coil control module, which is used to turn on the first electromagnetic coil in the coil assembly that is wound around the water delivery pipe of the dishwasher according to the start-up operation instruction of the dishwasher; An operation stage detection module, which is used to determine the operation stage of the dishwasher; A second coil control module, which is used to control the on / off of the second electromagnetic coil and the third electromagnetic coil in the coil assembly that are respectively wound around the water storage cup and the inner tank of the dishwasher according to the operation stage.

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