Dishwasher, dishwasher control method and storage medium

Abstract

The present application relates to a dishwasher, a control method for the dishwasher and a storage medium. The dishwasher comprises: a steam generator; a water inlet pipe connecting the inlet of the steam generator to an external water source; a first steam inlet pipe connecting the outlet of the steam generator to the gas inlet of a first gas-liquid separator for drying; a second steam inlet pipe connecting the gas outlet of the first gas-liquid separator to the first side of a steam spray connection pipe, delivering the dry hot steam to the steam spray connection pipe and then to the steam spray arm, and the steam spray arm sprays the tableware in the steam sterilization liner; a water inlet solenoid valve for controlling water inlet on the water inlet pipe; a controller connected to the steam generator and the water inlet solenoid valve, which controls the water inlet solenoid valve to open when entering the disinfection work so that the steam generator starts to inlet water, and is also used to control the steam generator to open after the steam generator is inletted with water. The use of this dishwasher can shorten the running time, reduce energy consumption and avoid secondary contamination of tableware.

Description

Technical Field

[0001] The present application relates to the technical field of dishwashers, and in particular to a dishwasher, a control method for a dishwasher, and a storage medium. Background Art

[0002] A dishwasher is a household appliance used to automatically clean tableware. With the improvement of people's living standards, dishwashers have become more and more popular. Most traditional dishwashers generally only have washing and drying functions. Although dishwashers can use hot water to simply sterilize tableware, they cannot achieve the disinfection effect. In order to enable dishwashers to disinfect tableware, disinfectable dishwashers have been developed.

[0003] However, most of the existing dishwashers that can be disinfected are of two types: ultraviolet and steam disinfection. Among them, the existing steam disinfection mostly sets the steam generator on the top of the inner tank of the dishwasher, and sprays steam downward from the top to sterilize the tableware at high temperature. After the sterilization is completed, the air is further heated by a PTC (Positive Temperature Coefficient) heater, and hot air is delivered to the inner tank to dry the tableware. However, high-temperature disinfection and hot air drying cannot be carried out at the same time, resulting in long operating time and high energy consumption of the dishwasher. In addition, the use of a PTC heater will introduce external air into the inner tank, which is very likely to cause secondary contamination of the tableware. Summary of the invention

[0004] In order to solve the problem that the use of a PTC heater makes it impossible to perform disinfection and drying simultaneously, resulting in a long operating time, high energy consumption and easy secondary pollution of the dishwasher, the present invention provides a dishwasher, a control method for the dishwasher and a storage medium. The dishwasher can achieve the technical effect of shortening the operating time, reducing energy consumption and avoiding secondary contamination of tableware.

[0005] A dishwasher, comprising:

[0006] a steam generator for generating hot steam;

[0007] a water inlet pipe connecting the inlet of the steam generator with an external water source, for conveying water to the steam generator;

[0008] A first gas-liquid separator, used for drying the hot steam;

[0009] a first steam inlet pipe connecting the outlet of the steam generator with the gas inlet of the first gas-liquid separator, for conveying the hot steam generated by the steam generator to the first gas-liquid separator for drying;

[0010] Liner;

[0011] A steam spraying arm disposed in the inner pot, for spraying steam to sterilize the tableware in the inner pot;

[0012] A second steam inlet pipe connecting the gas outlet of the first gas-liquid separator to the first side of the steam spray connecting pipe is used to transport the dried hot steam to the steam spray connecting pipe; the second side of the steam spray connecting pipe is connected to the inlet of the steam spray arm to transport the hot steam to the steam spray arm;

[0013] A water inlet solenoid valve disposed on the water inlet pipe, used to control the water inlet of the steam generator;

[0014] The controller connected to the steam generator and the water inlet solenoid valve is used to control the water inlet solenoid valve to open and connect the water inlet pipe and the steam generator when entering the disinfection work, so that the steam generator starts to take in water, and is also used to control the steam generator to open after the steam generator has completed taking in water.

[0015] In one embodiment, it also includes:

[0016] A steam heater having an inlet connected to the second steam inlet pipe and an outlet connected to the first side of the steam spray connection pipe, for heating hot steam;

[0017] A steam solenoid valve provided on the steam spray connection pipe, for controlling the delivery of hot steam;

[0018] A first temperature sensor disposed on the steam spray connection pipe, for detecting the temperature of the hot steam;

[0019] The steam heater, the first temperature sensor, and the steam solenoid valve are connected to the controller, and the controller is also used to control the steam heater to start heating when the temperature of the hot steam does not meet the sterilization temperature; when the temperature of the hot steam in the steam spray connecting pipe reaches the sterilization temperature, control the steam solenoid valve to connect the steam spray connecting pipe and the steam spray arm, so that the hot steam is delivered to the steam spray arm.

[0020] In one embodiment, it also includes:

[0021] Air duct;

[0022] A circulation fan is arranged in the inner tank, the air outlet of which is connected to the air duct, and is used to provide circulation power;

[0023] a steam circulation pipe connecting the air duct with the inlet of the steam heater;

[0024] A second gas-liquid separator disposed in the air duct, for drying the circulating hot steam;

[0025] The circulating fan is connected to the controller, and the controller is also used to control the circulating fan and the steam heater to turn on after the steam generator is turned off, so that the hot steam in the inner tank can be circulated and heated for utilization.

[0026] In one embodiment, it also includes:

[0027] A wax motor disposed at the air duct opening is used to control the connection and disconnection between the air duct and the outside;

[0028] The wax motor is connected to the controller, and the controller is also used to control the wax motor to disconnect the air duct from the outside after the washing work is completed, and is also used to control the wax motor and the circulating fan to remove hot steam after the disinfection work is completed.

[0029] In one embodiment, it also includes:

[0030] A flow sensor provided on the steam spray connection pipe and connected to the controller, for detecting the steam flow of hot steam;

[0031] The controller is further configured to control the steam generator to be turned off according to the steam flow rate.

[0032] In one embodiment, it also includes:

[0033] A second temperature sensor disposed at the bottom of the inner pot and connected to the controller, for detecting the temperature of the bottom of the inner pot;

[0034] The controller is also used to control the steam generator to be turned off according to the temperature of the bottom of the inner pot.

[0035] In one embodiment, it also includes:

[0036] A pressure sensor disposed at the bottom of the inner container and connected to the controller, for detecting the pressure at the bottom of the inner container;

[0037] The controller is further configured to control the steam generator to be turned off according to the pressure.

[0038] A method for controlling a dishwasher, the method comprising:

[0039] When entering the disinfection work, the water inlet solenoid valve is controlled to connect the water inlet pipe and the steam generator, so that the water inlet solenoid valve connects the water inlet pipe and the steam generator, so that the steam generator starts to take in water;

[0040] monitoring the water inlet status of the steam generator;

[0041] When it is determined that the water intake of the steam generator is completed, the water inlet solenoid valve is closed and the steam generator is controlled to open, so that the steam generator generates hot steam, and the generated hot steam is transported to the first gas-liquid separator through the first steam inlet pipe for drying, and then transported to the steam spray connecting pipe through the second steam pipe, and then transported to the steam spray arm by the steam spray connecting pipe to spray steam on the inner pot to sterilize the tableware in the inner pot.

[0042] In one embodiment, the method further comprises:

[0043] Acquire a first temperature of hot steam detected by a first temperature sensor on the spray connection pipe;

[0044] When it is determined that the temperature does not meet the sterilization temperature, the steam heater is started for heating, and the process returns to the step of obtaining the first temperature of the hot steam detected by the first temperature sensor on the spray connection pipe;

[0045] When it is determined that the first temperature meets the sterilization temperature, the steam solenoid valve on the steam spray connecting pipe is controlled to open to connect the steam spray connecting pipe with the steam spray arm, so that hot steam meeting the sterilization temperature is delivered to the steam spray arm.

[0046] In one embodiment, the method further comprises:

[0047] When the steam generator is turned off, the circulation fan arranged in the air duct is turned on, so that the circulation fan provides circulation power to drive the hot steam in the inner tank to circulate using the steam circulation pipe connected to the air duct, and during the circulation process, the circulating hot steam is dried by the second gas-liquid separator in the air duct, and the circulating hot steam is heated by the steam heater.

[0048] In one embodiment, the method further comprises:

[0049] When it is detected that the disinfection work meets the preset end conditions, the steam heater is turned off, the wax motor is turned on, and the circulation fan is controlled to run for a fixed time and then turned off, thereby ending the disinfection work.

[0050] In one embodiment, the method further comprises:

[0051] Obtaining the steam flow rate detected by the flow sensor for hot steam;

[0052] When it is determined according to the steam flow that the amount of steam in the inner container meets the amount required for sterilization, the steam generator is turned off.

[0053] In one embodiment, the method further comprises:

[0054] Acquiring a second temperature of the hot steam at the bottom of the inner container detected by a second temperature sensor;

[0055] When it is determined according to the second temperature that the hot steam at the bottom of the inner container meets a preset temperature, the steam generator is turned off.

[0056] In one embodiment, the method further comprises:

[0057] Acquiring the pressure of the hot steam at the bottom of the inner container detected by a pressure sensor;

[0058] When it is determined according to the pressure that the amount of steam in the inner container meets a pressure threshold, the steam generator is turned off.

[0059] In one embodiment, the method further comprises:

[0060] When the flow sensor detects that the circulating steam flow is less than a flow threshold during the circulation process, the steam generator is controlled to start up to supplement steam.

[0061] A computer-readable storage medium stores a computer program, wherein the computer program, when executed by a processor, implements the steps of any one of the above-mentioned methods for controlling a dishwasher.

[0062] The above-mentioned dishwasher, dishwasher control method and storage medium include a steam generator, a water inlet pipe for feeding water into the steam generator, a first gas-liquid separator, a first steam inlet pipe connecting the outlet of the steam generator with the gas inlet of the first gas-liquid separator, and a second steam inlet pipe connecting the gas outlet of the first gas-liquid separator with the first side of a steam spray connection pipe, which is used to transport the dried hot steam to the steam spray connection pipe; the second side of the steam spray connection pipe is connected to the inlet of a steam spray arm, which is used to transport hot steam to the steam spray arm, so that the steam spray arm sprays steam to sterilize the tableware in the inner tank, thereby achieving the goal of transporting the hot steam to the inner tank after drying for simultaneous sterilization and drying, shortening the operating time and reducing energy consumption. In addition, the use of hot steam for drying can avoid secondary contamination of the tableware. BRIEF DESCRIPTION OF THE DRAWINGS

[0063] Figure 1 is a schematic structural diagram of a dishwasher in one embodiment;

[0064] Figure 2 is a schematic structural diagram of a dishwasher in another embodiment;

[0065] Figure 3 is a schematic structural diagram of a dishwasher in another embodiment;

[0066] Figure 4 is a schematic structural diagram of a dishwasher in another embodiment;

[0067] Figure 5is a schematic structural diagram of a dishwasher in another embodiment;

[0068] Figure 6 1 is a flow chart of a method for controlling a dishwasher in one embodiment. DETAILED DESCRIPTION

[0069] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0070] like Figure 1 As shown, a dishwasher is provided, including: a steam generator 11, a water inlet pipe 12, a first gas-liquid separator 13, a first steam inlet pipe 14, a second steam inlet pipe 15, an inner tank 16, a steam spray arm 17, a steam spray connecting pipe 18, a water inlet solenoid valve 19 and a controller (not shown).

[0071] The steam generator 11 is used to generate hot steam. The water inlet pipe 12 connects the external water source of the dishwasher with the inlet of the steam generator 11, and is used to deliver water to the steam generator 11. The first gas-liquid separator 13 is used to dry the hot steam. The first steam inlet pipe 14 connects the outlet of the steam generator 11 with the gas inlet of the first gas-liquid separator 13, and is used to deliver the hot steam generated by the steam generator 11 to the first gas-liquid separator 13 for drying. The second steam inlet pipe 15 connects the gas outlet of the first gas-liquid separator 13 with the first side of the steam spray connection pipe 18, and is used to deliver the dried hot steam to the steam spray connection pipe 18. The inner tank 16 is used to place tableware, and the steam spray arm 17 is arranged in the inner tank 16, for example, the steam spray arm 17 is arranged on the top of the inner tank 16, and is used to spray steam to sterilize the tableware in the inner tank 16. The second side of the steam spray connection pipe 18 is connected to the inlet of the steam spray arm 17, and is used to deliver hot steam to the steam spray arm 17. The water inlet solenoid valve 19 is arranged on the water inlet pipe 12, and is used to control the water inlet of the steam generator 11. The controller is connected with the steam generator 11 and the water inlet solenoid valve 19, and is used to control the water inlet solenoid valve 19 to connect the water inlet pipe 12 and the steam generator 11, so that the steam generator 11 starts to take in water, and is also used to control the steam generator 11 to start after the steam generator 11 has completed taking in water.

[0072] Specifically, when the dishwasher is finished cleaning and enters the disinfection stage, the controller controls the water inlet solenoid valve 19 to open and connect the water inlet pipe 12 and the steam generator 11, so that the water inlet pipe 12 transports the water at the water source to the steam generator 11. Then, when it is detected that the steam generator 11 is filled with water, the steam generator 11 is controlled to start working and convert the water into hot steam. The generated hot steam is first transported to the first gas-liquid separator 13 through the first steam inlet pipe 14 for drying. The dried hot steam is transported to the steam spray connection pipe 18 through the second steam inlet pipe 15, and then transported to the steam spray arm 17 set in the inner tank 16 by the steam spray connection pipe 18. The steam spray arm 17 sprays the dried hot steam into the inner tank 16 to disinfect the tableware in the inner tank 16. Through the dry hot steam disinfection, disinfection and drying are carried out simultaneously, which can not only shorten the operation time of the dishwasher, reduce energy consumption, but also avoid secondary contamination of the tableware.

[0073] The above dishwasher, the above dishwasher, the control method of the dishwasher and the storage medium include a steam generator, a water inlet pipe for feeding water into the steam generator, a first gas-liquid separator, a first steam inlet pipe connecting the outlet of the steam generator with the gas inlet of the first gas-liquid separator, and a second steam inlet pipe connecting the gas outlet of the first gas-liquid separator with the first side of the steam spray connection pipe, which is used to transport the dried hot steam to the steam spray connection pipe; the second side of the steam spray connection pipe is connected to the inlet of the steam spray arm, which is used to transport hot steam to the steam spray arm, so that the steam spray arm sprays steam to sterilize the tableware in the inner tank, thereby achieving the goal of transporting the hot steam to the inner tank after drying for simultaneous sterilization and drying, shortening the operating time and reducing energy consumption. In addition, the use of hot steam for drying can avoid secondary contamination of the tableware.

[0074] In one embodiment, Figure 2 As shown, the dishwashing machine further includes: a steam heater 20 , a steam solenoid valve 21 , and a first temperature sensor 22 .

[0075] The inlet of the steam heater 20 is connected to the second steam inlet pipe 15, and the outlet is connected to the steam spray connection pipe 18 ( Figure 2The first side of the steam spray connecting pipe 18 is connected to the first side of the steam spray connecting pipe 18 (not marked) to heat the hot steam. The steam solenoid valve 21 is arranged on the steam spray connecting pipe 18 to control the delivery of the hot steam. The first temperature sensor 22 is arranged on the steam spray connecting pipe 18 to detect the temperature of the hot steam in the steam spray connecting pipe 18. The steam heater 20, the first temperature sensor 22, and the steam solenoid valve 21 are respectively connected to the controller. When the temperature of the hot steam does not meet the sterilization temperature, the controller controls the steam heater 20 to heat the hot steam passing through; when the temperature of the hot steam in the steam spray connecting pipe 18 reaches the sterilization temperature, the steam solenoid valve 21 is controlled to connect the steam spray connecting pipe 18 and the steam spray arm 17, so that the hot steam is delivered to the steam spray arm 17.

[0076] Specifically, during the process of starting the steam generator 11 to generate steam, the steam solenoid valve 21 can be closed so that the hot steam temporarily stays in the steam spray connection pipe 18 and cannot be delivered to the steam spray arm 17. At the same time, when the hot steam reaches the steam spray connection pipe 18, the first temperature sensor 22 detects the temperature of the hot steam to determine whether the delivered hot steam meets the sterilization temperature (110°C to 150°C). When the controller determines that the hot steam does not meet the sterilization temperature based on the value fed back by the first temperature sensor 22, the controller starts the steam heater 20. Since the delivered hot steam needs to pass through the steam heater 20, it can be heated by the started steam heater 20. Furthermore, when the temperature of the heated hot steam meets the sterilization temperature, the steam solenoid valve 21 is controlled to connect the steam spray connection pipe 18 and the steam spray arm 17, so that the hot steam meeting the sterilization temperature is delivered to the steam spray arm 17. It is also possible to directly open the steam solenoid valve 21 without additional judgment after turning on the steam heater 20. When the controller determines that the hot steam meets the sterilization temperature according to the value fed back by the first temperature sensor 22, the steam heater 20 may not be started for heating, and the steam solenoid valve 21 may be directly controlled to connect the steam spray connection pipe 18 and the steam spray arm 17, so that the hot steam is delivered to the steam spray arm 17. It should be understood that when the steam solenoid valve 21 is connected and in the process of hot steam delivery, the temperature of the hot steam may also be detected in real time by the first temperature sensor 22. During the real-time detection process, once it is determined that the temperature of the hot steam does not meet the sterilization temperature, the controller may control the steam heater 20 in real time to heat the hot steam delivered subsequently, so as to ensure that the hot steam delivered subsequently can meet the sterilization temperature.

[0077] In this embodiment, the steam heater, steam solenoid valve and first temperature sensor determine that the temperature meets the sterilization temperature before delivering it to the inner pot for disinfection, ensuring that the temperature delivered to the inner pot can play a role in sterilization and disinfection, avoiding insufficient temperature and failure to achieve the disinfection effect.

[0078] In one embodiment, Figure 3As shown, the dishwasher further includes: an air duct 23 , a steam circulation pipe 24 , a circulation fan 25 , and a second gas-liquid separator 26 .

[0079] The steam circulation pipe 24 connects the air duct 23 with the inlet of the steam heater 20. The circulation fan 25 is arranged in the inner tank 16, but the air outlet is connected to the air duct 23 to provide circulation power. The second gas-liquid separator 26 is arranged in the air duct 23 to dry the circulating hot steam. The circulation fan 25 is connected to the controller, and the controller is also used to control the circulation fan 25 to turn on after the steam generator 11 is turned off, so that the hot steam in the inner tank 16 is circulated for heating.

[0080] Specifically, when the steam generator 11 is controlled to be turned off, the controller controls the circulation fan 25 and the steam heater 20 to start. The circulation fan 25 provides circulation power, allowing the hot steam to circulate through the steam circulation pipe 24. At the same time, since the tableware is disinfected by superheated steam, the water on the tableware will be vaporized, causing the hot steam to not dry. Therefore, a second gas-liquid separator 26 is set in the air duct 23, and the vaporized water is removed by the second gas-liquid separator 26 to keep the hot steam dry. The temperature of the hot steam after passing through the gas-liquid separator will drop again, so in the process of circulation, it is further heated by the steam heater 20 connected to the steam circulation pipe 24 and started to ensure that the temperature of the hot steam meets the disinfection requirements.

[0081] In this embodiment, the circulating fan is used to perform secondary circulation heating and utilization of steam, effectively recovering the waste heat in the exhaust gas from superheated steam drying, realizing the secondary utilization of steam and saving energy. In addition, the second gas-liquid separator is further used during the circulation process to fully ensure the drying of the hot steam.

[0082] In one embodiment, reference Figure 3 The dishwasher also includes: a wax motor 27 arranged at the opening of the air duct 23 and connected to the controller, for controlling the opening and closing of the air duct 23 and the outside.

[0083] Specifically, when the wax motor 27 is included, the inner tank 16 may be in a state of communication with the outside. Therefore, when the disinfection work starts, in order to avoid the leakage of hot steam, the controller controls the wax motor 27 to close after the washing work is completed, and disconnects the connection between the air duct 23 and the outside, so that the inner tank 16 forms a closed space. Then, when the disinfection work is completed, the controller further controls the wax motor 27 and the circulation fan 25 to turn on. When the inner tank 16 is connected to the outside, the circulation fan 25 provides power to discharge the hot steam after the disinfection work outside the dishwasher, so that the hot steam after disinfection is discharged in time.

[0084] In one embodiment, reference Figure 3 The dishwasher also includes a steam spray connection pipe 18 ( Figure 3 On the controller (not marked), a flow sensor 28 connected to the controller is used to detect the steam flow of the hot steam.

[0085] Specifically, the flow sensor 28 is arranged on the steam spray connection pipe 18. When the hot steam is delivered to the steam spray arm 17 for spray disinfection, the flow sensor 28 detects the steam flow of the hot steam delivered to the inner tank 16. The steam flow can be obtained by multiplying the time and the flow size. When the controller determines that the hot steam delivered to the inner tank 16 is sufficient for disinfection according to the steam flow, the steam generator 11 is controlled to be closed and the generation of hot steam is stopped. Among them, whether the disinfection amount is met can be determined by comparing the detected steam flow with the preset flow critical value. Among them, the flow critical value can be set according to actual conditions, for example, according to the actual size of the inner tank 16. For example, when the controller determines that the steam flow is greater than or equal to the flow critical value, the controller controls the steam generator 11 to be closed and the generation of hot steam is stopped. In this embodiment, the steam flow delivered is detected by the flow sensor to control the generation of hot steam to stop, so as to avoid the steam generator 11 from always generating steam or generating insufficient steam.

[0086] In another embodiment, Figure 4 As shown, the dishwasher further includes a second temperature sensor 29 disposed at the bottom of the inner container 16 and connected to the controller for detecting the temperature of the bottom of the inner container 16 .

[0087] Specifically, due to the high temperature of hot steam, it is generally concentrated in the upper part of the inner tank 16 cavity. Therefore, when the second temperature sensor 29 at the bottom of the inner tank 16 cavity detects that the bottom temperature meets the preset temperature, for example, when the hot steam is limited to meet the sterilization temperature (110°C to 150°C) to be input, when the second temperature sensor detects that the bottom temperature is above 110°C, it means that the inner tank 16 cavity is full of steam, which is sufficient for disinfection. The controller controls the steam generator 11 to turn off and stop generating hot steam. In this embodiment, the generation of hot steam is stopped by detecting the bottom temperature through the temperature sensor to prevent the steam generator 11 from continuously generating steam or generating insufficient steam.

[0088] In another embodiment, reference Figure 4 The dishwasher also includes a pressure sensor 30 disposed at the bottom of the inner tank 16 and connected to the controller for detecting the pressure at the bottom of the inner tank 16 .

[0089] Specifically, due to the high temperature of hot steam, it is generally concentrated in the upper part of the inner tank 16 cavity, and as the amount of hot steam increases, the pressure at the bottom of the inner tank 16 will change. Therefore, when the pressure sensor 30 arranged at the bottom of the inner tank 16 detects that the pressure reaches the pressure threshold, it means that the inner tank 16 cavity is completely filled with steam, which is sufficient for disinfection. The controller controls the steam generator 11 to turn off and stop generating hot steam. Among them, the pressure threshold in this embodiment is preferably 0.5Mpa. That is, when the controller receives the pressure feedback from the pressure sensor 30 as 0.5Mpa, it controls the steam generator 11 to turn off. In this embodiment, the bottom pressure is detected by the pressure sensor 30 to stop the generation of hot steam, so as to avoid the steam generator 11 from always generating steam or generating insufficient steam.

[0090] In one embodiment, the dishwasher may include any one or more sensors of a flow sensor 28, a temperature sensor 29, and a pressure sensor 30. When multiple sensors are included, the steam generator 11 is controlled to be turned off when the detection results of the multiple sensors all indicate that the steam is sufficient for sterilization. In this embodiment, the detection accuracy can be improved by detecting multiple sensors with different detection dimensions at the same time.

[0091] In one embodiment, Figure 5 As shown, the dishwasher also includes a water storage tank 31, a condensed water storage tank 32, a drain pipe 33, a drain solenoid valve 34, a drain pump 35, a washing pump 36, a washing water heater 37, a washing spray inlet pipe 38, a washing upper spray arm 39, a washing lower spray arm 40, an upper bowl basket 41 and a lower bowl basket 42.

[0092] Specifically, refer to Figure 5The water storage tank 31 is arranged at the bottom of the inner tank 16 and connected to the drain pipe 33 for storing water. The inlet of the condensed water storage tank 32 is connected to the water outlet of the second gas-liquid separator 26, and the outlet is connected to the drain pipe 33, which is used to store the condensed water generated by the gas-liquid separation of the second gas-liquid separator 26 and discharge it through the drain pipe 33. The drainage solenoid valve 34 and the drainage pump 35 are both arranged on the drain pipe 33, the drainage solenoid valve 34 is used to control the drainage, and the drainage pump 35 is used to provide drainage power. The washing pump 36 and the washing water heater 37 are both arranged on the washing spray water inlet pipe 38, the washing pump 36 is used to provide power to push the washing water, and the washing water heater 37 is used to heat the washing water. The washing spray water inlet pipe 38 connects the water inlet pipe 12 with the upper washing spray arm 39 and the lower washing spray arm 40, and is used to transport washing water to the upper washing spray arm 39 and the lower washing spray arm 40. The upper washing spray arm 39 and the lower washing spray arm 40 are used to spray washing water onto the dishes placed on the upper bowl basket 41 and the lower bowl basket 42 to achieve a washing and cleaning effect. The water spray head of the upper washing spray arm 39 faces the upper bowl basket 41, and the water spray head of the lower washing spray arm 40 faces the lower bowl basket 42. The water outlet of the first gas-liquid separator 13 is connected to the drain pipe 33, which is used to discharge the condensed water generated by the first gas-liquid separator 13.

[0093] In addition, since the steam generator 11 and the washing spray water inlet pipe 38 share a water inlet pipe 12 in this embodiment, in order to accurately control the water inlet direction, the water inlet solenoid valve 19 can be an electromagnetic three-way valve, which controls the water inlet direction by switching different directions.

[0094] In one embodiment, Figure 6 As shown, a control method for a dishwasher is provided, and the method is applied to Figure 5 The controller in the dishwasher shown in the figure is used as an example to illustrate the following steps:

[0095] Step S601, controlling the dishwasher to wash dishes according to the washing mode selected by the user.

[0096] Step S602, determining whether the remaining time of the washing operation is less than or equal to a preset time, wherein the preset time can be set between 0 minutes and 10 minutes, and 3 minutes is preferred in this embodiment. That is, when it is determined that the remaining time of the washing operation is less than or equal to 3 minutes, proceed to step S603. When it is determined that the remaining time of the washing operation is greater than 3 minutes, return to step S601.

[0097] Step S603, control the water inlet solenoid valve 19 (electromagnetic three-way valve) to switch the water inlet direction, close the water inlet channel to the washing spray water inlet pipe 38, and open the water inlet channel to the steam generator 11, so that the steam generator 11 starts to take in water.

[0098] Step S604, monitoring and determining whether the steam generator 11 has completed water intake, if the water intake has been completed, proceeding to step S605, if the water intake has not been completed, returning to step S603.

[0099] Step S605, close the water inlet solenoid valve 19 to stop the water inlet, close the steam solenoid valve 21, and turn on the steam generator 11 to generate steam, so that the generated hot steam fills the first steam pipe 14, the second steam pipe 15 and the steam spray connecting pipe 18, and the hot steam is dried through the first gas-liquid separator 13 during the transportation process of the first steam pipe 14, the second steam pipe 15 and the steam spray connecting pipe 18.

[0100] Step S606, determining whether the washing operation is completed. If the washing operation is not completed, returning to step S605. If the washing operation is completed, entering step S607.

[0101] Step S607, turning off the wax motor 27 and the drain solenoid valve 34, so that the inner container 16 forms a closed space.

[0102] Step S608, judging whether the temperature of the hot steam meets the sterilization temperature (110°C to 150°C) according to the first temperature detected by the first temperature sensor 22. If not, proceed to step S609, and if yes, proceed to step S610.

[0103] Step S609, turning on the steam heater 20 to heat the hot steam.

[0104] Step S610, open the steam solenoid valve 21 to connect the steam spray connecting pipe 18 with the steam spray arm 17, so that hot steam meeting the sterilization temperature is delivered to the steam spray arm 17, and then sprayed into the inner pot 16 by the steam spray arm 17.

[0105] Step S611, the sensor detects whether the amount of steam entering the inner container 16 is sufficient for sterilization. If it is determined to be sufficient, the process proceeds to step S612. If it is determined not to be sufficient, the process proceeds to step S605, the steam generator 11 is kept turned on to continuously generate hot steam.

[0106] Specifically, when the sensor is a flow sensor 28 disposed on the steam spray connection pipe 18, the steam flow detected by the flow sensor 28 determines whether the amount of steam entering the inner container 16 is sufficient for disinfection. When the sensor is a second temperature sensor 29 disposed at the bottom of the inner container 16, when the second temperature sensor 29 detects that the temperature of the bottom is above 110°C, it is determined whether the amount of steam entering the inner container 16 is sufficient for disinfection. When the sensor is a pressure sensor 30 disposed at the bottom of the inner container 16, when the pressure sensor 30 detects that the pressure of the bottom is 0.5Mpa, it is determined whether the amount of steam entering the inner container 16 is sufficient for disinfection.

[0107] Step S612, turning off the steam generator 11 and turning on the circulation fan 25.

[0108] Specifically, the circulating fan 25 provides circulating power, so that the hot steam in the inner tank 16 circulates through the steam circulation pipe 24. At the same time, the circulating hot steam is dried by the second gas-liquid separator 26 in the air duct 23 during the circulation process. And the circulating hot steam is further heated by the steam heater 20 connected to the steam circulation pipe 24 and started, ensuring that the temperature of the hot steam meets the disinfection requirements.

[0109] Step S613, determine whether the preset end condition is met, if so, go to step S614. If not, return to step S611.

[0110] Step S614, when the sterilization and disinfection meets the preset end condition, the steam heater 20 is turned off, the wax motor 27 is turned on, and the circulating fan 25 is controlled to run for a fixed time and then turned off. Among them, the preset end condition can be a preset sterilization and disinfection time. When the sterilization and disinfection time meets the preset sterilization and disinfection time, it is determined that the preset end condition is met.

[0111] In one embodiment, when the dishwasher includes a flow sensor 28, after step S612, it also includes: judging whether the steam flow of the circulating hot steam is less than the flow threshold. When it is determined that the steam flow of the circulating hot steam is less than the flow threshold, control to open the steam generator 11 to supplement steam. Among them, the flow threshold can be set according to actual conditions, and 3L / min is preferably used in this embodiment. That is, when the steam flow of the circulating hot steam is less than 3L / min, the steam generator 11 is turned on to supplement steam. In this embodiment, by steam supplementation, a sufficient amount of hot steam can be ensured for disinfection to ensure the disinfection effect.

[0112] It should be understood that although Figure 6 The steps in the flowchart are shown in sequence as indicated by the arrows, but these steps are not necessarily executed in the order indicated by the arrows. Unless otherwise specified in this document, there is no strict order restriction for the execution of these steps, and these steps can be executed in other orders. Moreover, Figure 6 At least part of the steps may include multiple steps or multiple stages. These steps or stages are not necessarily performed at the same time, but can be performed at different times. The execution order of these steps or stages is not necessarily sequential, but can be performed in turn or alternately with other steps or at least part of the steps or stages in other steps.

[0113] In one embodiment, a computer readable storage medium is provided, on which a computer program is stored, and when the computer program is executed by a processor, the following steps are implemented:

[0114] When entering the disinfection work, the water inlet solenoid valve is controlled to connect the water inlet pipe and the steam generator, so that the water inlet solenoid valve connects the water inlet pipe and the steam generator, so that the steam generator starts to take in water;

[0115] Monitor the water inlet status of the steam generator;

[0116] When it is determined that the steam generator has completed water intake, the water inlet solenoid valve is closed and the steam generator is controlled to open, so that the steam generator generates hot steam, and the generated hot steam is transported to the first gas-liquid separator through the first steam inlet pipe for drying, and then transported to the steam spray connecting pipe through the second steam pipe, and then transported to the steam spray arm by the steam spray connecting pipe to spray steam on the inner tank to sterilize the tableware in the inner tank.

[0117] In one embodiment, when the computer program is executed by the processor, the following steps are also implemented: obtaining the first temperature of the hot steam detected by the first temperature sensor on the spray connecting pipe; when it is determined that the temperature does not meet the sterilization temperature, starting the steam heater for heating, and returning to the step of obtaining the first temperature of the hot steam detected by the first temperature sensor on the spray connecting pipe; when it is determined that the first temperature meets the sterilization temperature, controlling the steam solenoid valve on the steam spray connecting pipe to open and connect the steam spray connecting pipe with the steam spray arm, so that the hot steam meeting the sterilization temperature is delivered to the steam spray arm.

[0118] In one embodiment, when the computer program is executed by the processor, the following steps are also implemented: when the steam generator is turned off, the circulation fan arranged in the air duct is turned on, so that the circulation fan provides circulation power to drive the hot steam in the inner tank to circulate using the steam circulation pipe connected to the air duct, and during the circulation process, the circulating hot steam is dried through the second gas-liquid separator in the air duct, and the circulating hot steam is heated by the steam heater.

[0119] In one embodiment, when the computer program is executed by the processor, the following steps are also implemented: when it is detected that the disinfection work meets the preset end conditions, the steam heater is turned off, the wax motor is turned on, and the circulation fan is controlled to run for a fixed time and then turned off to end the disinfection work.

[0120] In one embodiment, when the computer program is executed by the processor, the following steps are also implemented: obtaining the steam flow rate detected by the flow sensor for hot steam; when it is determined based on the steam flow rate that the amount of steam in the inner pot meets the sterilization amount, turning off the steam generator.

[0121] In one embodiment, when the computer program is executed by the processor, the following steps are further implemented: obtaining a second temperature of the hot steam at the bottom of the inner pot detected by a second temperature sensor;

[0122] When it is determined according to the second temperature that the hot steam at the bottom of the inner container meets a preset temperature, the steam generator is turned off.

[0123] In one embodiment, when the computer program is executed by the processor, the following steps are also implemented: obtaining the pressure of the hot steam at the bottom of the inner pot detected by the pressure sensor; when the amount of steam in the inner pot is determined to meet the pressure threshold based on the pressure, turning off the steam generator.

[0124] In one embodiment, when the computer program is executed by the processor, the following steps are also implemented: when during the circulation process, the flow sensor detects that the circulated steam flow is less than a flow threshold, the steam generator is controlled to start up to supplement steam.

[0125] Those of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory or optical memory, etc. Volatile memory can include random access memory (RAM) or external cache memory. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM).

[0126] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0127] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A dishwasher, characterized in that: include: a steam generator for generating hot steam; a water inlet pipe connecting the inlet of the steam generator with an external water source, for conveying water to the steam generator; A first gas-liquid separator, used for drying the hot steam; a first steam inlet pipe connecting the outlet of the steam generator with the gas inlet of the first gas-liquid separator, for conveying the hot steam generated by the steam generator to the first gas-liquid separator for drying; Liner; A steam spraying arm disposed in the inner pot, for spraying steam to sterilize the tableware in the inner pot; A second steam inlet pipe connecting the gas outlet of the first gas-liquid separator to the first side of the steam spray connecting pipe is used to transport the dried hot steam to the steam spray connecting pipe; the second side of the steam spray connecting pipe is connected to the inlet of the steam spray arm to transport the hot steam to the steam spray arm; a washing spray water inlet pipe connected to the water inlet pipe; A water inlet solenoid valve disposed on the water inlet pipe, used to control the water inlet of the steam generator; The controller connected to the steam generator and the water inlet solenoid valve is used to enter the disinfection work when it is determined that the remaining time of the washing work is less than or equal to the preset time, switch the water inlet direction, close the water inlet channel to the washing spray water inlet pipe, control the water inlet solenoid valve to open and connect the water inlet pipe and the steam generator, so that the steam generator starts to take in water, and is also used to control the steam generator to start after the steam generator has completed taking in water.

2. The dishwasher according to claim 1, characterized in that Also includes: A steam heater having an inlet connected to the second steam inlet pipe and an outlet connected to the first side of the steam spray connection pipe, for heating hot steam; A steam solenoid valve provided on the steam spray connection pipe, for controlling the delivery of hot steam; A first temperature sensor disposed on the steam spray connection pipe, for detecting the temperature of the hot steam; The steam heater, the first temperature sensor, and the steam solenoid valve are connected to the controller, and the controller is also used to control the steam heater to start heating when the temperature of the hot steam does not meet the sterilization temperature; when the temperature of the hot steam in the steam spray connecting pipe reaches the sterilization temperature, control the steam solenoid valve to connect the steam spray connecting pipe and the steam spray arm, so that the hot steam is delivered to the steam spray arm.

3. The dishwasher according to claim 2, characterized in that: Also includes: Air duct; A circulation fan is arranged in the inner tank, the air outlet of which is connected to the air duct, and is used to provide circulation power; a steam circulation pipe connecting the air duct with the inlet of the steam heater; A second gas-liquid separator disposed in the air duct, for drying the circulating hot steam; The circulating fan is connected to the controller, and the controller is also used to control the circulating fan and the steam heater to turn on after the steam generator is turned off, so that the hot steam in the inner tank can be circulated and heated for utilization.

4. The dishwasher according to claim 3, characterized in that: Also includes: A wax motor disposed at the air duct opening is used to control the connection and disconnection between the air duct and the outside; The wax motor is connected to the controller, and the controller is also used to control the wax motor to disconnect the air duct from the outside after the washing work is completed, and is also used to control the wax motor and the circulating fan to discharge hot steam after the disinfection work is completed.

5. The dishwasher according to any one of claims 1 to 4, characterized in that: Also includes: A flow sensor provided on the steam spray connection pipe and connected to the controller, for detecting the steam flow of hot steam; The controller is further configured to control the steam generator to be turned off according to the steam flow rate.

6. The dishwasher according to any one of claims 1 to 4, characterized in that: Also includes: A second temperature sensor disposed at the bottom of the inner pot and connected to the controller, for detecting the temperature of the hot steam at the bottom of the inner pot; The controller is also used to control the steam generator to be turned off according to the temperature of the hot steam at the bottom of the inner pot.

7. The dishwasher according to any one of claims 1 to 4, characterized in that: Also includes: A pressure sensor disposed at the bottom of the inner pot and connected to the controller, for detecting the pressure of the hot steam at the bottom of the inner pot; The controller is further configured to control the steam generator to be turned off according to the pressure.

8. A method for controlling a dishwasher, characterized in that: The method is implemented based on the dishwasher according to any one of claims 1 to 7, comprising: Controlling the dishwasher to wash dishes according to the washing mode selected by the user; Determine whether the remaining time of the washing operation is less than or equal to the preset time; When the remaining time is less than or equal to the preset time, the disinfection operation is started, the water inlet solenoid valve is controlled to switch the water inlet direction, the water inlet channel to the washing spray water inlet pipe is closed, the water inlet pipe is connected to the steam generator, so that the water inlet solenoid valve connects the water inlet pipe and the steam generator, and the steam generator starts to inlet water; monitoring the water inlet status of the steam generator; When it is determined that the water intake of the steam generator is completed, the water inlet solenoid valve is closed and the steam generator is controlled to open, so that the steam generator generates hot steam, and the generated hot steam is transported to the first gas-liquid separator through the first steam inlet pipe for drying, and then transported to the steam spray connecting pipe through the second steam inlet pipe, and then transported to the steam spray arm by the steam spray connecting pipe to spray steam on the inner pot to sterilize the tableware in the inner pot.

9. The method according to claim 8, characterized in that The method further comprises: Acquire a first temperature of hot steam detected by a first temperature sensor on the steam spray connecting pipe; When it is determined that the first temperature does not meet the sterilization temperature, the steam heater is started for heating, and the step of returning to the step of obtaining the first temperature of the hot steam detected by the first temperature sensor on the steam spray connecting pipe is returned; the inlet of the steam heater is connected to the second steam inlet pipe, and the outlet of the steam heater is connected to the first side of the steam spray connecting pipe for heating the hot steam; When it is determined that the first temperature meets the sterilization temperature, the steam solenoid valve on the steam spray connecting pipe is controlled to open to connect the steam spray connecting pipe with the steam spray arm, so that hot steam meeting the sterilization temperature is delivered to the steam spray arm.

10. The method according to claim 9, characterized in that The method further comprises: When the steam generator is turned off, the circulation fan arranged in the air duct is turned on, so that the circulation fan provides circulation power to drive the hot steam in the inner tank to circulate using the steam circulation pipe connected to the air duct, and during the circulation process, the circulating hot steam is dried by the second gas-liquid separator in the air duct, and the circulating hot steam is heated by the steam heater.

11. The method according to claim 10, characterized in that The method further comprises: When it is detected that the disinfection work meets the preset end conditions, the steam heater is turned off, the wax motor is turned on, and the circulating fan is controlled to run for a fixed time and then turned off to end the disinfection work; the wax motor is arranged at the air duct opening to control the connection and disconnection of the air duct with the outside.

12. The method according to any one of claims 8 to 11, characterized in that: The method further comprises: Acquiring a steam flow rate of hot steam detected by a flow sensor disposed on the steam spray connecting pipe; When it is determined according to the steam flow that the amount of steam in the inner container meets the amount required for sterilization, the steam generator is turned off.

13. The method according to any one of claims 8 to 11, characterized in that: The method further comprises: Acquiring a second temperature of the hot steam at the bottom of the inner container detected by a second temperature sensor; When it is determined according to the second temperature that the hot steam at the bottom of the inner container meets a preset temperature, the steam generator is turned off.

14. The method according to any one of claims 8 to 11, characterized in that: The method further comprises: Acquiring the pressure of the hot steam at the bottom of the inner container detected by a pressure sensor; When it is determined according to the pressure that the amount of steam in the inner container meets a pressure threshold, the steam generator is turned off.

15. The method according to claim 12, characterized in that The method further comprises: When the flow sensor detects that the circulating steam flow is less than a flow threshold during the circulation process, the steam generator is controlled to start up to supplement steam.

16. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 8 to 15 are implemented.

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