Dish washing machine and drying control method thereof

Abstract

The invention provides a dish-washing machine and a drying control method thereof.The dish-washing machine comprises a cavity and an air duct, a cleaning cavity is defined by the cavity, and a humidity sensor is fixedly arranged on the inner wall of the cleaning cavity and used for detecting the humidity of the cleaning cavity; the air duct is fixedly arranged on the outer side of the cavity and communicates with the outside and the cleaning cavity, a heating assembly and a temperature sensor used for detecting the airflow temperature are arranged in the air duct, and the heating assembly is used for heating airflow; wherein when the drying mode is started, the heating assembly adjusts the heating temperature according to the humidity of the cleaning cavity and the air flow temperature. The humidity sensor is arranged in the cleaning cavity, the heating assembly and the temperature sensor are arranged in the air duct, and the heating temperature of the heating assembly is adjusted in real time by detecting the humidity in the cleaning cavity and the temperature of the airflow heated by the heating assembly in real time, so that the temperature of the airflow introduced into the cleaning cavity is matched with the humidity in the cleaning cavity; the cleaning cavity is better dried, the drying efficiency of the dish washing machine is dynamically adjusted, the drying efficiency is improved, and energy consumption is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of dishwashers, and in particular to a dishwasher and a drying control method thereof. Background Art

[0002] With the continuous development of science and technology, people's living standards have gradually improved. Dishwashers have gradually become one of the commonly used household appliances in life. Dishwashers automatically clean bowls, chopsticks, plates, dishes and other tableware through internal spray systems, drainage and filtration systems. After research, it was found that when the dishwasher is washing, if water stains accumulate in the inner tank of the dishwasher, it is easy to cause bacteria and mold proliferation, thus affecting the cleaning effect; at the same time, when the water stains in the inner tank of the dishwasher are not dried, mold will be found over time, especially when the user does not use the dishwasher for a long time. At present, dishwashers on the market generally use heating tubes for drying functions, and generally simply set the drying time, and cannot dynamically adjust the drying efficiency, resulting in low drying efficiency. Summary of the invention

[0003] The embodiments of the present invention provide a dishwasher and a drying control method thereof, so as to dynamically adjust the drying efficiency of the dishwasher and improve the drying efficiency.

[0004] The present invention provides a dishwasher, comprising:

[0005] A cavity, wherein the cavity is enclosed to form a clean cavity, and a humidity sensor is fixedly arranged on the inner wall of the clean cavity for detecting the humidity of the clean cavity;

[0006] An air duct, the air duct is fixedly arranged outside the cavity and communicates the outside with the cleaning cavity, a heating component and a temperature sensor for detecting the temperature of the air flow are arranged in the air duct, and the heating component is used to heat the air flow;

[0007] Wherein, when the drying mode is turned on, the heating component adjusts its heating temperature according to the humidity of the cleaning chamber and the temperature of the air flow.

[0008] In the dishwasher provided by the present invention, the heating component includes an ohmic heating tube, and the ohmic heating tube is fixedly arranged on the inner wall of the air duct for heating the airflow.

[0009] In the dishwasher provided by the present invention, the temperature sensor is arranged adjacent to the ohmic heating tube, and the temperature sensor is fixedly arranged on a side of the air duct away from the outside.

[0010] In the dishwasher provided by the present invention, the dishwasher further comprises a fan assembly, the fan assembly is fixedly arranged at one side of the cavity, and one end of the fan assembly is connected to one end of the air duct.

[0011] In the dishwasher provided by the present invention, the fan assembly is fixedly mounted on the lower end surface of the cavity, and the fan assembly comprises an air inlet, and the air inlet faces the ground.

[0012] In the dishwasher provided by the present invention, the air duct is a rectangular structure, and the air duct is extended from the bottom end of the cavity toward the side of the cavity, and the air duct is closely attached to the side of the cavity.

[0013] In the dishwasher provided by the present invention, the air duct includes an arc segment, which is arranged close to the side of the cavity and located above the connection between the air duct and the cavity, and one end of the arc segment is connected to the cavity and passes through the cleaning cavity.

[0014] The present invention further provides a drying control method for a dishwasher, which is applied to any of the above-mentioned dishwashers and comprises:

[0015] Acquire the real-time humidity of the cleaning chamber and the temperature of the heated air flow in the air duct, and determine the difference between the real-time humidity and the preset humidity;

[0016] If the real-time humidity is greater than the preset humidity, increasing the current of the heating component to raise the air flow temperature to a first preset temperature;

[0017] If the real-time humidity is less than the preset humidity, the current of the heating component is reduced to reduce the air flow temperature to a second preset temperature.

[0018] The preset humidity of the present invention includes drying humidity, and the step of obtaining the real-time humidity of the cleaning chamber and the temperature of the heated air flow in the air duct, and judging the difference between the real-time humidity and the preset humidity also includes:

[0019] If the real-time humidity is greater than the drying humidity, the drying mode is turned on;

[0020] If the real-time humidity is lower than the drying humidity, the drying mode is turned off.

[0021] The preset humidity of the present invention further includes a first preset humidity and a second preset humidity both greater than the drying humidity, and the first preset humidity is greater than the second preset humidity, and the step of obtaining the real-time humidity of the cleaning chamber and the temperature of the heated air flow in the air duct and determining the magnitude of the real-time humidity and the preset humidity also includes:

[0022] If the real-time humidity is greater than the first preset humidity, increasing the current of the heating component to raise the air flow temperature to the first preset temperature;

[0023] If the real-time humidity is less than the first preset humidity and greater than the second preset humidity, the current of the heating component is reduced to reduce the air flow temperature to the second preset temperature.

[0024] The present application arranges a humidity sensor inside the cleaning chamber, and arranges the heating component and the temperature sensor in the air duct, and detects the humidity in the cleaning chamber and the temperature of the air flow heated by the heating component in real time to adjust the heating temperature of the heating component in real time, so that the temperature of the air flow entering the cleaning chamber is adapted to the humidity in the cleaning chamber, so as to better dry the cleaning chamber, realize dynamic adjustment of the drying efficiency of the dishwasher, improve drying efficiency and save energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

[0026] Figure 1 is a structural diagram of a dishwasher in an embodiment of the present invention;

[0027] Figure 2 for Figure 1 The enlarged view of point A in the middle;

[0028] Figure 3 is an assembly diagram of an air duct and a fan assembly in an embodiment of the present invention;

[0029] Figure 4 is a flow chart of a drying control method of a dishwasher in an embodiment of the present invention;

[0030] Figure 5 is a sub-flow chart of a drying control method for a dishwasher in an embodiment of the present invention;

[0031] Figure 6 is a sub-flow chart of a drying control method for a dishwasher in an embodiment of the present invention;

[0032] Figure 7 1 is a schematic diagram of the steps of the control method of the dishwasher in an embodiment of the present invention;

[0033] The reference numerals in the figures are:

[0034] 1. Cavity; 11. Cleaning cavity; 2. Humidity sensor; 3. Air duct; 31. Heating component; 32. Temperature sensor; 33. Air outlet; 331. Embedded part; 34. Arc segment; 35. Straight segment; 4. Fan assembly; 41. Air inlet. DETAILED DESCRIPTION

[0035] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. Now, in conjunction with the accompanying drawings, the preferred embodiments of the present invention are described in detail.

[0036] Reference Figures 1 to 3 As shown, it shows an embodiment of the dishwasher of the present invention. The dishwasher comprises a cavity 1 and an air duct 3. The cavity 1 encloses a cleaning cavity 11. A humidity sensor 2 is fixedly arranged on the inner wall of the cleaning cavity 11 for detecting the humidity of the cleaning cavity 11. The air duct 3 is fixedly arranged on the outside of the cavity 1 and connects the outside and the cleaning cavity 11. A heating component 31 and a temperature sensor 32 for detecting the temperature of the air flow are arranged in the air duct 3. The heating component 31 is used to heat the air flow. When the drying mode is turned on, the heating component 31 adjusts its heating temperature according to the humidity of the cleaning cavity 11 and the temperature of the air flow.

[0037] Specifically, the dishwasher has gradually become a common kitchen appliance in daily life, which plays an important role in freeing people's hands and labor. The dishwasher mainly works through physical flushing and ultrasonic cleaning. Physical flushing mainly adopts the principle of physical and chemical cleaning. The surface of the tableware is mechanically flushed 360° by high-temperature and high-pressure water flow to quickly decompose and fall off the oil and residue on the tableware; ultrasonic cleaning is to use the high-frequency vibration generated by ultrasound in the liquid to form a shock wave, so that the dirt on the surface of the tableware is destroyed and falls off from the surface, achieving the cleaning effect. Both methods need to be carried out in the closed cavity 1. After the kitchenware is cleaned, water stains will be left inside the closed cavity 1, which is easy to cause bacteria and mold proliferation, thereby affecting the cleaning effect of the kitchenware; at the same time, when the water stains in the inner tank of the dishwasher are not dried, after a long time, especially when the user does not use the dishwasher for a long time, mold will be found to be generated, which will cause pollution to the storage of the kitchenware, and it is easy to cause the inner tank of the dishwasher to have a peculiar smell, thereby affecting the user experience. At present, most dishwashers have two main drying methods for their inner tanks: the first is condensation drying, which mainly uses the residual heat of the dishwasher after washing, and condenses water vapor into water droplets on the inner tank through the temperature difference, and then discharges it; the second is heat exchange drying, which is to install cold water pipes on both sides of the dishwasher cavity 1, and increase the temperature difference inside the cavity 1 through the cold water pipes, so that water vapor is adsorbed on the cold walls on both sides, so as to achieve the purpose of enhancing the drying effect; the third is hot air drying, which is to install a fan inside the dishwasher cavity 1 to blow out hot air to dry the tableware and the inner tank; the fourth is crystal bud drying, which uses the moisture absorption and heat dissipation characteristics of crystal bud ore for drying. When the dishwasher enters the drying stage, the hot and humid air passes through the crystal bud device, and the crystal bud ore absorbs moisture and then discharges the remaining gas from the dishwasher; the fifth is automatic door opening drying, which is a relatively new drying method. After washing, the dishwasher door will automatically open a door gap to fully connect with the outside air, and at the same time volatilize the hot air from the machine tank, so that the tableware drying effect is only ordinary drying function.

[0038] However, among the above-mentioned drying methods, the drying modes of most dishwashers are relatively simple, and the inner tank of the dishwasher is dried by setting a specific drying temperature and time, which has low drying efficiency and consumes a lot of energy.

[0039] Aiming at the drying mode of the inner tank of the dishwasher, especially the hot air drying mode, the present invention proposes a dishwasher, which includes a cavity 1 and an air duct 3. The cavity 1 is the main body of the dishwasher, and the cavity 1 is enclosed to form a cleaning cavity 11, which is used for storing and cleaning kitchen utensils. The cleaning cavity 11 is mainly provided with a spray module, a drying module, a heating module, a driving module, a drainage and water inlet module, etc. The heating module can heat the dishwashing water to a high temperature state, which is beneficial to the decomposition of oil stains on the one hand, and also helps to disinfect and sterilize on the other hand, making the tableware cleaner and more hygienic; the spray module is responsible for spraying high-pressure water evenly onto the tableware to ensure that every corner can be cleaned; the driving module is a key component for controlling the rotation and movement of the spray module to make the flushing more efficient and comprehensive; the drainage and water inlet module is responsible for draining out the dirty water and bringing in the clean water to ensure the smooth progress of the washing process.

[0040] In addition, a humidity sensor 2 is fixedly provided on the inner wall of the cleaning chamber 11, and the humidity sensor 2 is used to detect the humidity data of the cleaning chamber 11, so as to judge whether to turn on the drying mode of the cleaning chamber 11 according to the humidity data. The humidity sensor 2 has an infrared light source inside, which emits infrared light of a specific wavelength. Water vapor has a strong absorption capacity for infrared light of certain specific wavelengths. When infrared light passes through the air containing water vapor, part of the infrared light will be absorbed by the water vapor. The humidity sensor 2 has an infrared light detector inside, which is used to measure the intensity of the infrared light after passing through the air. By comparing the intensity difference between the emitted light and the received light, the water vapor content in the air can be calculated, and then the humidity and water stains in the cleaning chamber 11 can be judged; the feedback value of the humidity sensor 2 is the humidity. The lower the humidity, the drier the cleaning chamber 11 is.

[0041] The dishwasher also includes an air duct 3, which is fixedly arranged on the outside of the cavity 1, and one end of the air duct 3 is connected to the external space, and the other end is connected to the cleaning cavity 11, so that the airflow in the external space can be guided into the cleaning cavity 11 by the air duct 3. In order to ensure the drying effect of the airflow on the cleaning cavity 11, the airflow needs to be heated. Therefore, a heating component 31 and a temperature sensor 32 are also provided inside the air duct 3. The heating component 31 is used to heat the airflow so that the airflow can reach a high temperature, so that the water stains inside the cleaning cavity 11 can be dried after being guided to the cleaning cavity 11 by the air duct 3; the temperature sensor 32 is used to detect the temperature of the airflow, so as to determine whether the heating temperature of the heating component 31 reaches the specified heating temperature, so as to realize real-time adjustment of the current size of the heating component 31 and thus adjust the heating temperature of the heating component 31.

[0042] When the dishwasher is in drying mode, the air duct 3 is turned on to allow external air to flow into the cleaning chamber 11 through the air duct 3. At this time, the humidity sensor 2 and the temperature sensor 32 are turned on. The humidity sensor 2 detects the humidity inside the cleaning chamber 11, and then combines the air flow temperature detected by the temperature sensor 32 to adjust the heating temperature of the heating component 31 in real time. The heating temperature of the heating component 31 is mainly adjusted by adjusting the current of the heating component 31. The larger the current of the heating component 31, the higher the heating temperature of the heating component 31. Conversely, the smaller the current of the heating component 31, the lower the heating temperature of the heating component 31. The airflow flows from the outside to the inside of the air duct 3, and becomes a high-temperature airflow after being heated by the heating component 31 and flows to the inside of the cleaning chamber 11, thereby finally drying the cleaning chamber 11.

[0043] The present application sets a humidity sensor 2 inside the cleaning chamber 11, and provides the heating component 31 and the temperature sensor 32 in the air duct 3. The humidity in the cleaning chamber 11 and the temperature of the air flow heated by the heating component 31 are detected in real time to adjust the heating temperature of the heating component 31 in real time, so that the temperature of the air flow entering the cleaning chamber 11 is adapted to the humidity in the cleaning chamber 11, so as to better dry the cleaning chamber 11, realize dynamic adjustment of the drying efficiency of the dishwasher, improve drying efficiency and save energy consumption.

[0044] More specifically, the humidity sensor 2 is fixedly mounted on the top of the side wall of the clean chamber 11 , so that the humidity of the clean chamber 11 can be monitored more accurately.

[0045] In one embodiment, the heating assembly 31 includes an ohmic heating tube (not shown in the figure), which is fixed to the inner wall of the air duct 3 and is used to heat the airflow. Specifically, dishwashers on the market generally use heating tubes for drying functions. Although the heating speed of the heating tube is relatively fast, the price is relatively expensive, and the high heating power is not conducive to cost control. At the same time, ohmic heating technology is widely used in food oven heating. In this embodiment, ohmic heating technology is applied to the drying function of the dishwasher. The basic principle of ohmic heating is to use the heat generated when the current passes through the resistance material to heat the surrounding gas, directly converting electrical energy into thermal energy, with less energy loss. Therefore, the heating component 31 in the present embodiment includes an ohmic heating tube, which is fixed on the inner wall of the air duct 3. The ohmic heating tube is used to heat the airflow, so that the airflow flowing from the outside of the air duct 3 into the inside of the air duct 3 is heated when passing through the ohmic heating tube. The heat generated when the current passes through the resistance material is used to heat the gas passing through the ohmic heating tube, and the heated gas is then introduced into the cleaning chamber 11 to dry the cleaning chamber 11. The heating method of the ohmic heating tube is simple, the heating efficiency is high, and the energy consumption is low, which can save power use and reduce drying costs. At the same time, it is convenient to adjust the heating temperature of the ohmic heating tube by adjusting the current flowing through the ohmic heating tube. The adjustment method is simple and can accurately control the heating temperature of the airflow.

[0046] In one embodiment, referring to Figure 3 As shown, the temperature sensor 32 is arranged adjacent to the ohmic heating tube, and the temperature sensor 32 is fixed on the side of the air duct 3 away from the outside. Specifically, the temperature sensor 32 is used to detect the temperature of the heated airflow, so as to judge whether the heating temperature of the ohmic heating tube reaches the specified heating temperature through the airflow temperature; therefore, in order to ensure the accuracy of the detection of the temperature sensor 32, the temperature sensor 32 is fixed on the side of the air duct 3 away from the outside, and is arranged adjacent to the ohmic heating tube, so that the airflow enters the air duct 3 from the outside, is heated by the ohmic heating tube, and then the airflow temperature is directly detected by the temperature sensor 32, so that the airflow temperature obtained by the temperature sensor 32 is more accurate, and then the judgment accuracy of the heating temperature of the ohmic heating tube is higher, so as to achieve more accurate control of the heating temperature of the ohmic heating tube, and improve the drying efficiency and drying effect.

[0047] In a specific embodiment, refer to Figures 1 to 3As shown, the dishwasher further includes a fan assembly 4, which is fixedly mounted on one side of the cavity 1, and one end of the fan assembly 4 is connected to one end of the air duct 3. Specifically, the dishwasher further includes a fan assembly 4, which is used to drive the flow of gas, so that the external gas can flow into the air duct 3 and flow into the cleaning cavity 11 along the air duct 3; the fan assembly 4 is fixedly mounted on one side of the cavity 1, and one end of the fan assembly 4 is connected to one end of the air duct 3, and the other end of the air duct 3 is connected to the cavity 1, so that the external airflow, under the action of the fan assembly 4, flows into the air duct 3 and is heated by the heating assembly 31, and flows into the cleaning cavity 11 through the air duct 3.

[0048] More specifically, the heating component 31 is located at the rear side of the fan component 4, and the temperature sensor 32 is located at the rear side of the heating component 31, thereby ensuring that the airflow is first heated by the heating component 31 and then the temperature is detected by the temperature sensor 32, thereby ensuring a smooth drying process.

[0049] In one embodiment, referring to Figures 1 to 3 As shown, the fan assembly 4 is fixed on the lower end surface of the cavity 1, and the fan assembly 4 includes an air inlet 41, and the air inlet 41 faces the ground. Specifically, the fan assembly 4 is fixed on the lower end surface of the cavity 1, which can better hide the fan assembly 4, prevent the fan assembly 4 from being affected by external people or objects during operation, and improve the structural stability of the fan assembly 4. At the same time, the fan assembly 4 located on the lower end surface of the cavity 1 has less dust and other impurities falling into it, so as to improve the cleanliness of the fan assembly 4 and avoid affecting the operation and service life; the fan assembly 4 also includes an air inlet 41, which is used for airflow to flow into the interior of the fan assembly 4 and flow to the air duct 3. The air inlet 41 is set toward the ground so that the airflow passes through the air inlet 41 from the bottom of the fan assembly 4 to enter the interior of the fan assembly 4, and then flows to the interior of the air duct 3 until it flows to the interior of the clean cavity 11, thereby ensuring the smoothness of the airflow and improving the structural stability of the fan assembly 4.

[0050] In a specific embodiment, refer to Figures 1 to 3As shown, the air duct 3 is a rectangular structure, and the air duct 3 is extended from the bottom end of the cavity 1 toward the side of the cavity 1, and the air duct 3 is closely attached to the side of the cavity 1. Specifically, the air duct 3 is set as a flat structure, that is, the air duct 3 is set as a rectangular structure, and the air duct 3 is extended from the bottom end of the cavity 1 toward the side of the cavity 1, and the air duct 3 is closely attached to the side of the cavity 1, so that the air duct 3 is more closely attached to the cavity 1, reducing the occupied area of ​​the air duct 3, thereby reducing the occupied area of ​​the dishwasher and improving the user experience.

[0051] More specifically, the cavity 1 is provided with a through hole, which is located at one side of the cavity 1 and passes through to the clean cavity 11 , and is used to connect the air duct 3 and the clean cavity 11 .

[0052] More specifically, the air duct 3 further comprises an air outlet 33, and an embedding portion 331 is provided at the end of the air outlet 33, and the embedding portion 331 is embedded and fixed with the through hole. The assembly of the air duct 3 and the cavity 1 is simple.

[0053] In one embodiment, referring to Figure 1 and Figure 3 As shown, the air duct 3 includes an arc segment 34, which is arranged close to the side of the cavity 1 and located above the connection between the air duct 3 and the cavity 1. One end of the arc segment 34 is connected to the cavity 1 and passes through the cleaning cavity 11. Specifically, the air duct 3 includes an arc segment 34, which is located on one side of the cavity 1 and is closely arranged to the side of the cavity 1. The arc segment 34 is located above the connection between the cavity 1 and the air duct 3, and one end of the arc segment 34 is fixedly connected to the cavity 1, and one end of the arc segment 34 also passes through the cleaning chamber 11, so that the external airflow enters the interior of the air duct 3 from the end of the air duct 3 away from the arc segment 34, and the airflow is heated by the heating component 31 and flows into the air duct 3 of the arc segment 34. The airflow flows along the path of the arc segment 34 above the connection between the cavity 1 and the air duct 3, and then flows downward to the end of the arc segment 34 connected to the cavity 1, and finally flows into the cleaning chamber 11. The arc segment 34 is used to reduce the flow rate of the airflow so that the airflow can slowly flow into the cleaning chamber 11 when flowing into the cleaning chamber 11, thereby ensuring the stability of the internal structure of the cleaning chamber 11.

[0054] More specifically, the air duct 3 includes a straight segment 35 and an arc segment 34. The straight segment 35 is connected to the fan assembly 4, and the other end extends toward the through hole to be connected to the arc segment 34. The arc segment 34 is located above the through hole, and one end of the arc segment 34 is connected to the through hole.

[0055] The embodiment of the present invention also provides a drying control method for a dishwasher. Figure 7 is a schematic flow chart of the steps of the drying control method of the dishwasher, Figure 4 : is a flow chart of the drying control method of the dishwasher, and the steps of the drying control method of the dishwasher include S110-S130:

[0056] S110, obtaining the real-time humidity of the cleaning chamber 11 and the temperature of the heated air flow in the air duct 3, and determining the difference between the real-time humidity and the preset humidity;

[0057] Specifically, the real-time humidity of the cleaning chamber 11 is detected by the humidity sensor 2 located in the cleaning chamber 11. The humidity sensor 2 has an infrared light source inside, which emits infrared light of a specific wavelength. Water vapor has a strong absorption capacity for infrared light of certain specific wavelengths. When infrared light passes through air containing water vapor, part of the infrared light will be absorbed by water vapor. The humidity sensor 2 has an infrared light detector inside, which is used to measure the intensity of infrared light after passing through the air. By comparing the intensity difference between the emitted light and the received light, the water vapor content in the air can be calculated, and then the humidity and water stains in the cleaning chamber 11 can be judged; the feedback value of the humidity sensor 2 is humidity, and the lower the humidity, the drier the cleaning chamber 11. After obtaining the real-time humidity, the humidity sensor 2 feeds back the real-time humidity to the main control; the airflow temperature is detected by the temperature sensor 32 located in the air duct 3. After obtaining the temperature of the heated airflow, the temperature sensor 32 feeds back the airflow temperature to the main control; the preset humidity refers to the empirical data pre-set on the main control.

[0058] The main control obtains the real-time humidity in the cleaning chamber 11 and the temperature of the heated air flow in the air duct 3, and then determines the size of the real-time humidity and the preset humidity to determine whether it is necessary to adjust the heating temperature of the heating component 31, and then adjusts the size of the air flow temperature so that the temperature of the air flow flowing into the cleaning chamber 11 is adapted to the humidity in the cleaning chamber 11, thereby completing the drying work of the inner tank of the dishwasher in a more systematic and efficient manner and saving energy.

[0059] S120, if the real-time humidity is greater than the preset humidity, increasing the current of the heating component 31 to raise the air flow temperature to a first preset temperature;

[0060] Specifically, the first preset temperature refers to a preset value pre-set on the main control, which is an empirical data; when it is judged that the real-time humidity is greater than the preset humidity, it indicates that the humidity in the cleaning chamber 11 is relatively high at this time, and the current heating temperature of the heating component 31 is relatively low. If the current heating temperature is maintained to heat the airflow, the drying cycle will be longer and the drying efficiency will be low; therefore, the main control increases the current of the heating component 31 to increase the heating temperature of the heating component 31, further increase the temperature of the airflow after the airflow is heated, and control the airflow temperature to the first preset temperature to ensure that the heated airflow can better dry the cleaning chamber 11 and improve the drying efficiency.

[0061] S130, if the real-time humidity is less than the preset humidity, reducing the current of the heating component 31 to reduce the air flow temperature to a second preset temperature;

[0062] Specifically, the second preset temperature refers to a preset value pre-set on the main control, which is an empirical data, and the second preset temperature is lower than the first preset temperature; when it is judged that the real-time humidity is lower than the preset humidity, it indicates that the humidity in the cleaning chamber 11 is low at this time, and the current heating temperature of the heating component 31 is high. If the current heating temperature is maintained to heat the airflow, energy consumption will increase; therefore, the main control reduces the current of the heating component 31 to reduce the heating temperature of the heating component 31, further reduce the temperature of the airflow after the airflow is heated, and control the airflow temperature to the second preset temperature to ensure that the heated airflow can better dry the cleaning chamber 11 while saving energy loss.

[0063] In one embodiment, if Figure 5 As shown, the preset humidity includes drying humidity, and step S110 also includes S111-S112.

[0064] S111, if the real-time humidity is greater than the drying humidity, turning on the drying mode;

[0065] S112, if the real-time humidity is lower than the drying humidity, turning off the drying mode;

[0066] Specifically, the preset humidity includes a drying humidity, which refers to the humidity when the dishwasher needs to enter a drying mode. When the dishwasher finishes cleaning the kitchenware or in other states, the real-time humidity in the cleaning chamber 11 is obtained, and the magnitude of the real-time humidity and the drying humidity is calculated to determine whether the drying mode needs to be turned on.

[0067] When the real-time humidity is greater than the drying humidity, it means that the humidity in the cleaning chamber 11 is high at this time, and the cleaning chamber 11 needs to be dried to ensure that the cleaning chamber 11 is in a dry state to avoid the formation of mold. At this time, the drying mode needs to be turned on, and the main control turns on the fan assembly 4 and the heating assembly to heat the airflow and guide it to the cleaning chamber 11 to perform a drying operation on the cleaning chamber 11.

[0068] When the real-time humidity is lower than the drying humidity, it indicates that the humidity in the cleaning chamber 11 is low and the cleaning chamber 11 does not need to be dried. In this case, the drying mode needs to be turned off or not turned on, and the main control turns off the fan assembly 4 and the heating assembly to save energy.

[0069] In one embodiment, if Figure 6 As shown, the preset humidity also includes a first preset humidity and a second preset humidity both greater than the drying humidity, and the first preset humidity is greater than the second preset humidity. After step S110, steps S113-S114 are also included.

[0070] S113, if the real-time humidity is greater than the first preset humidity, increasing the current of the heating component 31 to raise the air flow temperature to the first preset temperature;

[0071] S114. If the real-time humidity is less than the first preset humidity and greater than the second preset humidity, the current of the heating component 31 is reduced to reduce the air flow temperature to the second preset temperature.

[0072] Specifically, the preset humidity also includes a first preset humidity and a second preset humidity, both of which are greater than the drying humidity, and both of which are preset values ​​pre-set on the main control and are empirical data.

[0073] After obtaining the real-time humidity and the air flow temperature, the main control calculates the real-time humidity and the first preset humidity and the second preset humidity, respectively, and then determines whether to adjust the current of the heating component 31.

[0074] When the real-time humidity is greater than the first preset humidity, it indicates that the humidity in the cleaning chamber 11 is relatively high at this time, and the current heating temperature of the heating component 31 is relatively low. If the current heating temperature is maintained to heat the airflow, the drying cycle will be longer and the drying efficiency will be low. Therefore, the main control increases the current of the heating component 31 to increase the heating temperature of the heating component 31, further increase the temperature of the airflow after the airflow is heated, and control the airflow temperature to the first preset temperature to ensure that the heated airflow can better dry the cleaning chamber 11 and improve the drying efficiency.

[0075] When the real-time humidity is less than the first preset humidity and greater than the second preset humidity, it indicates that the humidity in the cleaning chamber 11 at this time is relatively low, and the heating temperature of the current heating component 31 is relatively high. If the heating temperature of the heating air flow is continuously maintained, it will increase the energy consumption. Therefore, the main control reduces the current of the heating component 31 to lower the heating temperature of the heating component 31, further reducing the temperature of the air flow after being heated, and controls the reduction of the air flow temperature to the second preset temperature, so as to ensure that the heated air flow can better dry the cleaning chamber 11 while saving energy loss.

[0076] Exemplarily, when the dishwashing is completed, the humidity sensor 2 in the cleaning chamber 11 judges the humidity value of the cleaning chamber 11. When the real-time humidity X > t (t refers to the drying humidity), it is determined that the cleaning chamber 11 needs to be dried at this time. At this moment, the dishwasher enters the drying mode, and at the same time, the main control continuously monitors the real-time humidity detected by the humidity sensor 2. When the real-time humidity X > t1 (t1 refers to the first preset humidity, and t1 > t), it is determined that the humidity value in the cleaning chamber 11 is relatively large and the drying power needs to be increased. At this moment, the main control increases the current passing through the heating component 31, and at the same time determines the feedback value of the temperature sensor 32 (the feedback value refers to the air flow temperature), and controls the temperature of the heating component 31 at the T1 temperature (T1 refers to the first preset temperature). When the real-time humidity detected by the humidity sensor 2 in the cleaning chamber 11 satisfies t2 < X < t1 (t2 refers to the second preset humidity), at this moment, the main control reduces the current passing through the heating component 31, and at the same time determines the feedback value of the temperature sensor 32, and controls the temperature of the heating component 31 at the T2 (T2 refers to the second preset temperature, and T1 > T2) temperature, and continuously dries the cleaning chamber 11 until the real-time humidity satisfies X < t, and it is determined that the drying is completed at this time, and the drying function is stopped.

[0077] The drying control method of the dishwasher of the present application combines the humidity sensor 2 to detect the humidity environment in the cleaning chamber 11 and the temperature sensor 32 to detect the air flow temperature, and realizes the real-time adjustment of the temperature of the heating component 31 by regulating the magnitude of the current of the heating component 31, so as to more systematically and efficiently complete the drying work of the cleaning chamber 11 of the dishwasher, improve the drying efficiency, and save energy consumption.

[0078] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A dishwasher, characterized in that: include: A cavity, wherein the cavity is enclosed to form a clean cavity, and a humidity sensor is fixedly arranged on the inner wall of the clean cavity for detecting the humidity of the clean cavity; An air duct, the air duct is fixedly arranged outside the cavity and communicates the outside with the cleaning cavity, a heating component and a temperature sensor for detecting the temperature of the air flow are arranged in the air duct, and the heating component is used to heat the air flow; Wherein, when the drying mode is turned on, the heating component adjusts its heating temperature according to the humidity of the cleaning chamber and the temperature of the air flow.

2. The dishwasher according to claim 1, characterized in that The heating component comprises an ohmic heating tube, which is fixed to the inner wall of the air duct and is used for heating the airflow.

3. The dishwasher according to claim 2, characterized in that The temperature sensor is arranged adjacent to the ohmic heating tube, and the temperature sensor is fixedly arranged on a side of the air duct away from the outside.

4. The dishwasher according to claim 1, characterized in that The dishwasher further comprises a fan assembly, which is fixedly arranged at one side of the cavity, and one end of the fan assembly is connected to one end of the air duct.

5. The dishwasher according to claim 4, characterized in that: The fan assembly is fixedly arranged on the lower end surface of the cavity, and the fan assembly comprises an air inlet, and the air inlet faces the ground.

6. The dishwasher according to any one of claims 1 to 5, characterized in that: The air duct is a rectangular structure, and the air duct is extended from the bottom end of the cavity toward the side of the cavity, and the air duct is closely attached to the side of the cavity.

7. The dishwasher according to claim 6, characterized in that The air duct includes an arc segment, which is arranged closely against the side of the cavity and located above the connection between the air duct and the cavity. One end of the arc segment is connected to the cavity and passes through the cleaning cavity.

8. A drying control method for a dishwasher, characterized in that: Applied to the dishwasher according to any one of claims 1 to 7, the method comprises: Acquire the real-time humidity of the cleaning chamber and the temperature of the heated air flow in the air duct, and determine the difference between the real-time humidity and the preset humidity; If the real-time humidity is greater than the preset humidity, increasing the current of the heating component to raise the air flow temperature to a first preset temperature; If the real-time humidity is less than the preset humidity, the current of the heating component is reduced to reduce the air flow temperature to a second preset temperature.

9. The method according to claim 8, characterized in that The preset humidity includes the drying humidity, and the step of obtaining the real-time humidity of the cleaning chamber and the temperature of the heated air flow in the air duct, and determining the difference between the real-time humidity and the preset humidity also includes: If the real-time humidity is greater than the drying humidity, the drying mode is turned on; If the real-time humidity is lower than the drying humidity, the drying mode is turned off.

10. The method according to claim 9, characterized in that The preset humidity also includes a first preset humidity and a second preset humidity both greater than the drying humidity, and the first preset humidity is greater than the second preset humidity, and the step of obtaining the real-time humidity of the cleaning chamber and the temperature of the heated air flow in the air duct and determining the magnitude of the real-time humidity and the preset humidity also includes: If the real-time humidity is greater than the first preset humidity, increasing the current of the heating component to raise the air flow temperature to the first preset temperature; If the real-time humidity is less than the first preset humidity and greater than the second preset humidity, the current of the heating component is reduced to reduce the air flow temperature to the second preset temperature.

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