Dishwasher and control method thereof

Abstract

The present invention discloses a dishwasher and a control method thereof. The dishwasher includes: an inner container, a shelf disposed in the inner container for placing tableware, a steam generating device disposed in the inner container for generating water vapor, a heating device disposed in the inner container for heating the tableware before generating water vapor, the heating device making the temperature of the tableware higher than the temperature of the water vapor, and the liquid in the water vapor absorbing heat and vaporizing when contacting the tableware. In the dishwasher proposed by the present invention, the heating device heats the tableware before cleaning the tableware. After the tableware is heated, the steam generating device generates water vapor. The water vapor enters the gap between the stains and the tableware. When the liquid in the water vapor contacts the heated tableware, vaporization occurs. The volume of the liquid increases several times instantaneously after vaporizing into a gas. Therefore, the stains attached to the surface of the tableware will separate from the tableware, thereby making the cleaning effect of the tableware better.

Description

Technical Field

[0001] The present invention relates to the field of household appliances, and particularly to a dishwasher and a control method thereof. Background Art

[0002] With the improvement of living standards, people have higher and higher requirements for the quality of life, and thus have higher and higher requirements for various aspects such as the quality, performance, humanization in use, and intelligence in operation of products. As an excellent product, the dishwasher has gradually entered people's lives. The dishwasher is a device for automatically cleaning tableware such as bowls, chopsticks, plates, dishes, knives, and forks, which greatly facilitates people's lives. Currently, dishwashers mainly use high-pressure water to wash the residues on tableware for a long time to achieve the cleaning of tableware. However, the cleaning power of this method of using high-pressure water to wash tableware is limited, and high-pressure water cannot effectively clean tableware with relatively high viscosity or tableware that has not been cleaned for a long time. Summary of the Invention

[0003] In order to solve the technical problem that the dishwasher in the prior art fails to clean tableware thoroughly, the present invention provides a dishwasher and a control method thereof.

[0004] The technical solution adopted by the present invention is as follows:

[0005] The present invention provides a dishwasher and a control method thereof. The dishwasher includes: an inner container, a rack disposed in the inner container for placing tableware, a steam generating device disposed in the inner container for generating water vapor, and further includes a heating device disposed in the inner container for heating the tableware before generating the water vapor. The heating device makes the temperature of the tableware higher than the temperature of the water vapor, and when the liquid in the water vapor contacts the tableware, it absorbs heat and vaporizes.

[0006] Further, a blower for diffusing water vapor is provided in the inner container.

[0007] Further, a spraying device for flushing the stains on the surface of the tableware is provided in the inner container.

[0008] Preferably, the steam generating device is disposed at the bottom of the inner container, and a water inlet solenoid valve is provided at the bottom of the inner container. Cleaning water enters the inner container from the water inlet solenoid valve, and the steam generating device heats the cleaning water to generate water vapor.

[0009] Preferably, the heating device is an infrared heating device or a microwave heating device.

[0010] The control method of the dishwasher includes the steps of:

[0011] Running a heating program to heat the tableware to a preset temperature;

[0012] Run the steam program to generate water vapor. When the water vapor contacts the tableware, it vaporizes and detaches the stains on the surface of the tableware.

[0013] Run the spray program to rinse the stains on the surface of the tableware.

[0014] Run the drying program to dry the tableware.

[0015] Preferably, running the steam program to generate water vapor. When the water vapor contacts the tableware and vaporizes to detach the stains on the surface of the tableware specifically includes the steps of:

[0016] Introduce cleaning water into the inner container.

[0017] When the water level in the inner container reaches the preset water level, the steam generating device heats the cleaning water to generate water vapor.

[0018] Preferably, the preset water level is lower than the height of the shelf.

[0019] Furthermore, it further includes the step of: turning on the fan to diffuse the water vapor during or after the operation of the steam program.

[0020] Compared with the prior art, the heating device in the dishwasher proposed by the present invention heats the tableware before cleaning the tableware. After the tableware is heated, the steam generating device generates water vapor. The water vapor enters the gap between the stains and the tableware. When the liquid in the water vapor contacts the heated tableware, it will vaporize. The volume of the liquid will increase several times instantly after vaporizing into gas. Therefore, the stains attached to the surface of the tableware will detach from the tableware, thereby making the cleaning effect of the tableware better. Description of the Drawings

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0022] Figure 1 It is a schematic structural diagram of the dishwasher in the embodiment of the present invention;

[0023] 1. Inner container; 2. Water inlet solenoid valve; 3. Steam generating device; 4. Heating device; 5. Fan. Detailed Embodiments

[0024] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clear and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0025] With the improvement of living standards, people have higher and higher requirements for the quality of life, and thus have higher and higher requirements for various aspects of product quality, performance, humanization in use, and intelligence in operation. As an excellent product, the dishwasher has gradually entered people's lives. A dishwasher is a device that automatically cleans tableware such as bowls, chopsticks, plates, dishes, knives, and forks, greatly facilitating people's lives. Currently, dishwashers mainly use high-pressure water to wash the residues on tableware for a long time to achieve the cleaning of tableware. However, the cleaning power of this method of using high-pressure water to wash tableware is limited, and high-pressure water cannot effectively clean tableware with relatively high viscosity or tableware that has not been cleaned for a long time.

[0026] Therefore, in order to solve the technical problem in the prior art that dishwashers cannot thoroughly clean the stubborn stains on the surface of tableware, resulting in incomplete cleaning, the present invention proposes a dishwasher, including:

[0027] An inner container, a shelf, a heating device, and a steam generating device provided inside the inner container. Among them, the shelf is used to place tableware, the steam generating device is used to generate water vapor to make the stains attached to the surface of the tableware separate from the tableware, and the heating device is used to heat the tableware before generating water vapor. The heating device makes the temperature on the surface of the tableware higher than the temperature of the water vapor, and the liquid in the water vapor absorbs heat and vaporizes when it contacts the tableware.

[0028] It can be seen from this that the heating device in the dishwasher proposed by the present invention will heat the tableware before cleaning the tableware. After the tableware is heated, the steam generating device generates water vapor. The water vapor enters the gap between the stain and the tableware. When the liquid in the water vapor contacts the heated tableware, it will absorb heat and vaporize. The volume of the liquid will instantaneously increase several times after vaporizing into a gas. Therefore, the stain attached to the surface of the tableware will separate from the tableware, thereby making the cleaning effect of the tableware better.

[0029] The principle and structure of the present invention will be described in detail below with reference to the accompanying drawings and embodiments.

[0030] Such as Figure 1As shown in the figure, the present invention provides a dishwasher, which includes an inner tank 1. A shelf for placing tableware is provided inside the inner tank. A steam generating device 3 for generating water vapor is provided inside the inner tank 1, a heating device 4 for heating the tableware is provided inside the inner tank 1, and a spraying device for rinsing the stains on the surface of the tableware is provided inside the inner tank. Among them, a water inlet solenoid valve 2 is provided at the bottom of the inner tank. The cleaning water enters the inner tank from the water inlet solenoid valve. The steam generating device heats the cleaning water to evaporate it into water vapor. At the same time, heating devices are provided on each side wall of the inner tank. The heating devices are located above and below the shelf, and the heating devices uniformly heat the tableware on the shelf. On the one hand, the heating devices enable the tableware surface to be evenly heated, preventing the cold tableware from coming into uneven contact with the high-temperature water vapor and cracking. On the other hand, the heating devices make the temperature of the tableware surface higher than the temperature of the liquid in the water vapor, so that when the liquid in the water vapor contacts the tableware, vaporization can occur instantaneously. Among them, the heating device can be a microwave heating device or an infrared heating device.

[0031] Further, in order to accelerate the diffusion of water vapor, a blower 5 is also provided on the inner tank.

[0032] Put the tableware into the dishwasher and start the dishwasher. The heating device in the dishwasher will first heat the tableware. After the heating is completed, the water inlet solenoid valve is opened, and the cleaning water enters the inner tank. Then, the steam generating device heats the cleaning water to generate water vapor. During the heating process of the steam heating device or after the heating is completed, the blower is turned on to accelerate the diffusion of the water vapor throughout the inner tank. Because there are gaps between the stains and the tableware surface, the water vapor will diffuse into the gaps between the two. Also, because the tableware surface has been heated before, when the water vapor contacts the tableware surface, the liquid in the water vapor will instantaneously vaporize, the liquid volume will instantaneously increase several times, the air pressure in the gap will instantaneously increase, generating a thrust force to make the stains attached to the tableware surface detach. After the stains detach, the tableware is rinsed, and finally the tableware is dried to complete the washing process.

[0033] The present invention also provides a control method for a dishwasher, which includes the steps:

[0034] Run the heating program to heat the tableware to a preset temperature;

[0035] Run the steam program to generate water vapor. After the water vapor contacts the tableware, it vaporizes, causing the stains on the tableware surface to detach;

[0036] Run the spraying program to rinse the stains on the tableware surface;

[0037] Run the drying program to dry the tableware.

[0038] Specifically, place the tableware on the shelf in the inner cavity of the dishwasher. After the dishwasher is turned on, first run the heating program. During this process, the heating device heats the tableware to make the temperature on the surface of the tableware reach the preset temperature, and the preset temperature is higher than the temperature of the water vapor.

[0039] After the heating program runs to completion, run the steam program. During this process, first open the water inlet solenoid valve to introduce cleaning water into the inner cavity. When the water level of the cleaning water reaches the preset water level (the preset water level is lower than the height of the shelf), the steam generating device heats the cleaning water to generate water vapor. The water vapor diffuses into the gaps between the stains attached to the surface of the tableware and the tableware. Since the temperature on the surface of the tableware is higher than the temperature of the water vapor, when the liquid in the water vapor contacts the tableware, it will vaporize. After the liquid vaporizes, its volume will increase, generating a thrust force to make the stains separate from the surface of the tableware. At the same time, during the operation of the steam program or after the steam program runs to completion, turn on the blower to accelerate the diffusion of the water vapor.

[0040] After the steam program runs to completion, run the spraying program. The spraying device rinses the tableware to wash away the stains on the surface of the tableware.

[0041] After the spraying program runs to completion, run the drying program to dry the tableware, and the blower can also be turned on during the drying process to accelerate the drying speed of the tableware.

[0042] In summary, it can be seen that the control method of the dishwasher proposed by the present invention enables the stains to separate from the surface of the tableware by allowing water vapor to enter the gaps between the stains and the tableware and utilizing the vaporization of the water vapor, and can thoroughly and effectively clean the tableware.

[0043] It should be noted that the terms used above are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0044] Unless otherwise specifically stated, the relative arrangement of components and steps, numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for the sake of convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationship. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods, and devices should be regarded as part of the authorization specification. In all the examples shown and discussed here, any specific value should be construed as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, further discussion thereof is not required in subsequent drawings.

[0045] The foregoing is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. Dishwasher, including an inner container, a rack disposed in the inner container for placing tableware, and a steam generating device disposed in the inner container for generating water vapor, characterized in that It further includes a heating device disposed inside the inner container for heating the tableware before generating the water vapor, the heating device making the temperature of the tableware higher than the temperature of the water vapor, and when the liquid in the water vapor contacts the tableware, it absorbs heat and vaporizes, increasing the air pressure in the gap between the tableware and the stains to generate a thrust force, thereby detaching the stains on the surface of the tableware.

2. The dishwasher according to claim 1, characterized in that, A blower for diffusing water vapor is provided inside the inner container.

3. The dishwasher according to claim 1, characterized in that, A spraying device for rinsing the stains on the surface of the tableware is provided inside the inner container.

4. The dishwasher according to claim 1, characterized in that, The steam generating device is disposed at the bottom of the inner container, and an inlet solenoid valve is provided at the bottom of the inner container. The cleaning water enters the inner container from the inlet solenoid valve, and the steam generating device heats the cleaning water to generate water vapor.

5. The dishwasher according to claim 1, wherein, The heating device is an infrared heating device or a microwave heating device.

6. The control method of a dishwasher according to any one of claims 1-5, characterized in that, It includes the steps of: Running a heating program to heat the tableware to a preset temperature; Running a steam program to generate water vapor, and when the water vapor contacts the tableware, it vaporizes to detach the stains on the surface of the tableware; Running a spraying program to rinse the stains on the surface of the tableware; Running a drying program to dry the tableware.

7. The control method of the dishwasher according to claim 6, characterized in that, Running the steam program to generate water vapor, and when the water vapor contacts the tableware and vaporizes to detach the stains on the surface of the tableware specifically includes the steps of: Introducing cleaning water into the inner container; When the water level in the inner container reaches the preset water level, the steam generating device heats the cleaning water to generate water vapor.

8. The control method of the dishwasher according to claim 7, wherein, The preset water level is lower than the height of the shelf.

9. The control method of the dishwasher according to claim 6, characterized in that, It further includes the step of: turning on the blower to diffuse water vapor during or after the operation of the steam program.

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