Steam drying sterilization device, method and dishwasher

Abstract

The present invention provides a steam drying and sterilizing device, method, and dishwasher. After receiving a start command, a controller controls a steam generation module to generate steam, and the steam enters a steam storage chamber. A temperature sensor detects the temperature of the steam in the steam storage chamber. A pressure sensor detects the pressure of the steam in the steam storage chamber. When the temperature and pressure of the steam in the steam storage chamber meet a preset first condition, the controller controls the steam storage chamber to communicate with a preset space, so that the steam in the steam storage chamber enters the preset space and dries and sterilizes the washed items in the preset space. By providing a steam storage chamber, the present invention causes the steam continuously generated by the steam generation module to be passively pressurized in the steam storage chamber. The steam temperature increases with the increase in pressure, thereby drying and sterilizing the washed items in the preset space with the higher temperature steam, thereby improving the sterilization effect of the steam.

Description

Technical Field

[0001] The present invention relates to the technical field of household appliances, and in particular to a steam drying and sterilizing device, method and dishwasher. Background Art

[0002] In the related art, steam is usually generated in a steam generating module and circulated in a set space, thereby drying and sterilizing the cleaned items in the set control. In this method, the steam temperature is usually below 100 degrees, which is not conducive to sterilization and results in poor sterilization effect. Summary of the Invention

[0003] In view of this, an object of the present invention is to provide a steam drying and sterilizing device, method and dishwasher to improve the sterilization effect of steam.

[0004] In the first aspect, an embodiment of the present invention provides a steam drying and sterilization device, including a steam generating module, a steam storage chamber, a temperature sensor, a pressure sensor and a controller; the steam generating module is connected to the steam storage chamber; the controller is respectively connected to the steam generating module, the steam storage chamber, the temperature sensor and the pressure sensor; the controller is used to control the steam generating module to generate steam and the steam enters the steam storage chamber after obtaining a start instruction; the temperature sensor is used to detect the temperature of the steam in the steam storage chamber; the pressure sensor is used to detect the pressure of the steam in the steam storage chamber; the controller is used to control the steam storage chamber to be connected to a preset space when the temperature and pressure of the steam in the steam storage chamber meet a preset first condition, so that the steam in the steam storage chamber enters the preset space to dry and sterilize the cleaned items in the preset space.

[0005] In combination with the first aspect, an embodiment of the present invention provides a first possible implementation method of the first aspect, wherein the above-mentioned controller is also used to control the steam generation module to stop generating steam when the temperature of the steam storage chamber and the pressure of the steam storage chamber meet a preset first condition; the controller is also used to control the steam generation module to generate steam when the temperature of the steam storage chamber and the pressure of the steam storage chamber meet a preset second condition.

[0006] In combination with the first aspect, an embodiment of the present invention provides a second possible implementation method of the first aspect, wherein the above-mentioned device also includes an evacuation motor; the evacuation motor is connected to the controller; the evacuation motor is connected to the preset space; and the controller is also used to control the evacuation motor to extract air in the preset space after obtaining a drying instruction.

[0007] In combination with the second possible implementation of the first aspect, an embodiment of the present invention provides a third possible implementation of the first aspect, wherein the above-mentioned controller is also used to control the vacuum motor to stop working when the air pressure in the preset space is less than or equal to the first preset pressure, and control the vacuum motor to extract air in the preset space after a first preset time after the vacuum motor stops working and the number of times the vacuum motor works is less than a preset number.

[0008] In combination with the third possible implementation of the first aspect, an embodiment of the present invention provides a fourth possible implementation of the first aspect, wherein the above-mentioned controller is also used to control the steam generating module to stop generating steam and control the steam storage chamber to stop communicating with the preset space after the number of times the vacuum motor works is equal to the preset number and a second preset time has passed after the vacuum motor stops working.

[0009] In combination with the first aspect, an embodiment of the present invention provides a fifth possible implementation of the first aspect, wherein the above-mentioned device also includes a compressor; the controller is also used to control the steam storage chamber to stop communicating with the preset space after obtaining the preset time of the start-up instruction, control the vacuum motor to extract the air in the preset space, and control the compressor to blow clean air into the preset space.

[0010] In combination with the fifth possible implementation of the first aspect, an embodiment of the present invention provides a sixth possible implementation of the first aspect, wherein the above-mentioned compressor includes an air filter device; the compressor blows clean air into the preset space through the air filter device.

[0011] In combination with the first aspect, an embodiment of the present invention provides a seventh possible implementation of the first aspect, wherein the center of gravity of the steam generation module is lower than the center of gravity of the steam storage chamber.

[0012] In a second aspect, an embodiment of the present invention also provides a steam drying and sterilization method, which is applied to a steam drying and sterilization device; the device includes a steam generating module, a steam storage chamber, a temperature sensor, a pressure sensor and a controller. The method includes: after obtaining a start instruction, the controller controls the steam generating module to generate steam, and the steam enters the steam storage chamber; the temperature sensor detects the temperature of the steam in the steam storage chamber; the pressure sensor detects the pressure of the steam in the steam storage chamber; when the temperature and pressure of the steam in the steam storage chamber meet a preset first condition, the controller controls the steam storage chamber to be connected to a preset space, so that the steam in the steam storage chamber enters the preset space, and dries and sterilizes the cleaned items in the preset space.

[0013] In a third aspect, an embodiment of the present invention further provides a dishwasher comprising the above-mentioned steam drying and sterilizing device and a dishwasher body; the dishwasher body comprises a preset space that can be communicated with the steam storage chamber of the steam drying and sterilizing device.

[0014] The embodiments of the present invention bring the following beneficial effects:

[0015] Embodiments of the present invention provide a steam drying and sterilization device, method, and dishwasher. After receiving a start command, a controller controls a steam generation module to generate steam, which enters a steam storage chamber. A temperature sensor detects the temperature of the steam in the steam storage chamber, and a pressure sensor detects the pressure of the steam in the steam storage chamber. When the temperature and pressure of the steam in the steam storage chamber meet a first preset condition, the controller controls the steam storage chamber to communicate with a preset space, allowing the steam in the steam storage chamber to enter the preset space and dry and sterilize the washed items in the preset space. This method, by providing a steam storage chamber, causes the steam continuously generated by the steam generation module to be passively pressurized in the steam storage chamber, causing its temperature to rise as the pressure increases. This allows the higher-temperature steam to dry and sterilize the washed items in the preset space, thereby improving the steam sterilization effect.

[0016] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or understood by practicing the present invention. The purposes and other advantages of the present invention are realized and obtained by the structures particularly pointed out in the description, claims and drawings.

[0017] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 A schematic structural diagram of a steam drying and sterilizing device provided in an embodiment of the present invention;

[0020] Figure 2 A schematic structural diagram of another steam drying and sterilizing device provided in an embodiment of the present invention;

[0021] Figure 3 A flow chart of a steam drying sterilization method provided by an embodiment of the present invention;

[0022] Figure 4 This is a structural schematic diagram of a dishwasher provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work shall fall within the scope of protection of the present invention.

[0024] With the improvement of living standards and the popularity of dishwashers, people are more and more pursuing multi-purpose machines. They not only pursue the washing process of tableware, but also pay more and more attention to the drying and sterilization of tableware. Therefore, many dishwashers have added steam generation modules to use steam for drying and sterilization. However, the steam drying and sterilization on dishwashers are basically carried out by circulating steam method. The steam temperature is below 100 degrees, and the steam mixes with the unclean air in the dishwasher, which is not conducive to sterilization, resulting in mediocre sterilization effect.

[0025] Based on this, the steam drying and sterilization device, method and dishwasher provided by the embodiments of the present invention can be applied to various electrical appliances that require steam drying and sterilization.

[0026] To facilitate understanding of this embodiment, a steam drying and sterilizing device disclosed in an embodiment of the present invention is first introduced in detail.

[0027] The embodiment of the present invention provides a steam drying and sterilizing device. Figure 1 As shown, the device includes a steam generating module 10, a steam storage chamber 20, a temperature sensor 30, a pressure sensor 40 and a controller 50. The steam generating module is connected to the steam storage chamber; the controller is connected to the steam generating module, the steam storage chamber, the temperature sensor and the pressure sensor respectively. Figure 1 The curve connection in the figure indicates the connection relationship. The steam storage chamber can be connected to the preset space 1000 under the control of the controller. Figure 1 Connected is represented in the middle.

[0028] The controller is used to control the steam generating module to generate steam after obtaining the start instruction, and the steam enters the steam storage chamber; the temperature sensor is used to detect the temperature of the steam in the steam storage chamber; the pressure sensor is used to detect the pressure of the steam in the steam storage chamber; the controller is used to control the steam storage chamber to be connected with the preset space when the temperature and pressure of the steam in the steam storage chamber meet the preset first condition, so that the steam in the steam storage chamber enters the preset space to dry and sterilize the cleaned items in the preset space.

[0029] In a specific implementation, a temperature sensor and a pressure sensor can be installed on the inner wall of the steam storage chamber to detect the temperature and pressure of the steam within the steam storage chamber, respectively. The temperature sensor and pressure sensor transmit the detected data to a controller, which compares the received temperature with a first preset temperature and the received pressure with a first preset pressure at a preset frequency. The preset first condition can be that the pressure of the steam within the steam storage chamber is greater than or equal to the preset pressure. When the preset first condition is met, the controller can control the steam storage chamber to communicate with the preset space, allowing steam from the steam storage chamber to enter the preset space and dry and sterilize the washed items in the preset space. To facilitate steam entry into the steam storage chamber, the center of gravity of the steam generation module can be set lower than the center of gravity of the steam storage chamber.

[0030] To enhance sterilization effectiveness, the preset pressure is higher than atmospheric pressure. As steam generated by the steam generation module continuously enters the steam storage chamber, the pressure in the steam storage chamber increases, and the temperature of the steam also rises, resulting in higher-temperature steam. Accordingly, the preset temperature is typically higher than 100°C. The preset temperature can be set based on the sterilization effectiveness of steam at different temperatures, such as 121°C.

[0031] When the temperature and pressure of the steam storage chamber meet a preset first condition, the controller can control the steam generation module to stop generating steam and continuously compare the received temperature with the preset temperature, and the received pressure with the preset pressure. Because the pressure inside the steam storage chamber is greater than the internal pressure of the preset space (typically atmospheric pressure), the steam in the steam storage chamber will enter the preset space, and the pressure inside the steam storage chamber will decrease.

[0032] When it is detected that the pressure of the steam in the steam storage chamber is less than a second preset pressure, or the temperature of the steam in the steam storage chamber is less than a second preset temperature, the steam generating module may be controlled to generate steam. The above-mentioned condition that the pressure of the steam in the steam storage chamber is less than the second preset pressure, or the temperature of the steam in the steam storage chamber is less than the second preset temperature, may be considered a second condition. That is, when the temperature and pressure of the steam storage chamber meet the preset second condition, the controller controls the steam generating module to generate steam to maintain the temperature and pressure of the steam in the steam storage chamber within a preset range.

[0033] In order to allow the steam in the steam storage chamber to more fully fill the preset space, the above-mentioned device also includes an evacuation motor; the evacuation motor is connected to the controller; the evacuation motor is in communication with the preset space; and the controller is further configured to control the evacuation motor to extract the air in the preset space after receiving a drying instruction. When the air pressure in the preset space is less than or equal to a first preset pressure, the evacuation motor is controlled to stop working. After the high-temperature steam is fully mixed with the air in the preset space, that is, after a first preset time has passed after the evacuation motor stops working, and the number of times the evacuation motor has worked is less than a preset number, the evacuation motor is controlled to extract the air in the preset space to extract the mixed gas of steam and air in the preset space and reduce the air pressure in the preset space. The preset number of times begins counting when the controller receives a start instruction.

[0034] After the evacuation motor has operated intermittently several times, it can be considered that the steam content in the preset space has met the sterilization requirements. At this time, the evacuation motor can be controlled to stop operating, so that the steam in the preset space sterilizes the cleaned items in the preset space. The number of times the evacuation motor operates can be a set number of times. The set number of times can be determined through repeated experiments. After the evacuation motor has operated for a predetermined number of times and a second preset time has passed after the evacuation motor has stopped operating, that is, after the steam has continuously sterilized the cleaned items for a second preset time, the controller can control the steam generation module to stop generating steam and control the steam storage chamber to stop communicating with the preset space, thereby completing the steam drying and sterilization process.

[0035] After the steam drying and sterilization, the items in the preset space need to be cooled. To achieve the cooling process, the above device can be provided with a compressor. The controller of the steam drying and sterilizing device with the evacuation motor 60 and the compressor 70 is as follows: Figure 2 As shown, the evacuation motor and compressor are each connected to a preset space. After a preset time after receiving a start command, the steam storage chamber is controlled to stop communicating with the preset space, the evacuation motor is controlled to extract air from the preset space, and the compressor is controlled to blow clean air into the preset space. The preset time after receiving the start command can be the time required to complete the drying and sterilization process using steam. The compressor includes an air filter; the compressor blows clean air into the preset space through the air filter.

[0036] An embodiment of the present invention provides a steam drying and sterilization device. After receiving a start command, a controller controls a steam generation module to generate steam, which enters a steam storage chamber. A temperature sensor detects the temperature of the steam in the steam storage chamber, and a pressure sensor detects the pressure of the steam in the steam storage chamber. When the temperature and pressure of the steam in the steam storage chamber meet a first preset condition, the controller controls the steam storage chamber to communicate with a preset space, allowing the steam in the steam storage chamber to enter the preset space and dry and sterilize the washed items in the preset space. This method, by providing a steam storage chamber, causes the steam continuously generated by the steam generation module to be passively pressurized in the steam storage chamber. Its temperature increases with increasing pressure, thereby drying and sterilizing the washed items in the preset space with the higher-temperature steam, thereby improving the steam sterilization effect.

[0037] This embodiment also provides another steam drying and sterilization device, which can be controlled to achieve high-temperature steam drying and sterilization of tableware. This device is primarily targeted at existing dishwashers, which typically use a steam generator or a PTC heater combined with a fan to dry washed tableware. Steam generators lack a steam storage chamber, resulting in low sterilization efficiency through circulating steam. PTC heaters combined with fans offer limited drying effects, have little sterilization function, and are unable to remove residual water from the shelves and inner pot surfaces.

[0038] The steam drying and sterilization device includes a steam generator, an evacuation motor, a compressor, and other devices, and can be used in dishwashers. The steam generator consists of two parts: a steam generation chamber (equivalent to the aforementioned "steam generation module," also known as a "heating chamber") and a steam storage chamber. The center of gravity of the steam storage chamber is higher than that of the heating chamber to facilitate steam storage. The steam storage chamber is also equipped with a temperature detection device (equivalent to the aforementioned "temperature sensor") and a pressure detection device (equivalent to the aforementioned "pressure sensor").

[0039] When the dishwasher is running, the steam generator also starts working. The steam generating chamber produces steam, and the steam storage chamber stores the steam. As the heating chamber continues to operate, the steam pressure and temperature in the steam storage chamber continue to rise. When the temperature and pressure reach the set value, the steam generator stops working. When the pressure and temperature drop to a certain range, the steam generator starts again, keeping the temperature and pressure of the steam storage chamber stable.

[0040] The vacuum motor in the above device is used to vacuum the air, extracting the unclean air inside the dishwasher during the drying stage and then replacing it with the clean air generated by the compressor; the compressor is used to generate compressed air, and the compressor is equipped with an air filter device to generate clean compressed air, which is used to replace the air inside the dishwasher, cool and dry.

[0041] In short, the steam generator is used to generate and store steam; the compressor is used to generate clean gas source; and the vacuum motor is used to evacuate air.

[0042] The device operates as follows: After the dishwasher is started, the steam generator begins to generate steam. When the steam in the steam storage chamber reaches the set pressure and temperature, the steam generator operates intermittently to maintain the pressure and temperature in the steam storage chamber. When the dishwasher completes the washing cycle and enters the drying phase, the vacuum motor begins to operate, extracting the air from the dishwasher. When the pressure reaches a certain level, the steam switch is turned on, allowing steam to enter the dishwasher. Because steam has a greater specific gravity than air, the upper layer of the dishwasher is clean steam, while the lower layer is residual, unclean air. At this point, the vacuum motor is activated again to extract the mixed steam and air, and this process is repeated several times.

[0043] At this time, the inside of the dishwasher is filled with clean steam, and because the pressure in the steam storage chamber is higher than atmospheric pressure, the temperature of the steam entering the dishwasher is greater than 100 degrees; at this time, the steam generator continues to work, so that the temperature entering the dishwasher is always higher than 100 degrees.

[0044] Controlling the steam temperature above 121 degrees and maintaining it for 15-20 minutes can achieve the level of medical sterilization and remove residual water from the dishwasher's inner tank and shelves.

[0045] When the steam sterilization drying time is reached, the steam generator stops working, the vacuum motor starts to discharge the internal steam, and the compressor starts to blow clean compressed air in to lower the temperature inside the dishwasher, so that the surface temperature of the tableware is reduced to an appropriate range.

[0046] During use of the above-mentioned device, the high-temperature steam generated by the steam generator passes through the steam storage chamber and becomes pressurized high-temperature steam. The temperature of the steam is also higher than before pressurization. In this way, in conjunction with the vacuum motor, the temperature of the steam entering the inner tank during the drying stage is greater than 100 degrees, achieving the purpose of high-temperature drying and disinfection. Then, in conjunction with the vacuum motor and compressor, the hot air in the inner tank is extracted and clean cold air is injected to achieve rapid cooling. Compared with existing drying technologies, the above method can achieve the drying of the inner tank wall, shelves, etc., avoiding the problem of residual condensed water. At the same time, the high-temperature disinfection can reach a medical grade of 121 degrees, which is clean and hygienic, and has a significant disinfection effect.

[0047] Corresponding to the above method embodiment, the embodiment of the present invention also provides a steam drying sterilization method, which is applied to a steam drying sterilization device; the device includes a steam generating module, a steam storage chamber, a temperature sensor, a pressure sensor and a controller. Figure 3 As shown, the method includes the following steps:

[0048] In step 300, after receiving the start instruction, the controller controls the steam generating module to generate steam, and the steam enters the steam storage chamber.

[0049] In step 302, a temperature sensor detects the temperature of steam in the steam storage chamber; and a pressure sensor detects the pressure of steam in the steam storage chamber.

[0050] In step 304, when the temperature and pressure of the steam in the steam storage chamber meet a preset first condition, the controller controls the steam storage chamber to communicate with the preset space, so that the steam in the steam storage chamber enters the preset space to dry and sterilize the washed items in the preset space.

[0051] The steam drying and sterilization method provided in the embodiment of the present invention has the same technical features as the steam drying and sterilization device provided in the above embodiment, and therefore can solve the same technical problems and achieve the same technical effects.

[0052] The embodiment of the present invention further provides a dishwasher, such as Figure 4 As shown, the dishwasher includes the above-mentioned steam drying and sterilizing device 8 and a dishwasher body 9; the dishwasher body includes a preset space that can be communicated with the steam storage chamber of the steam drying and sterilizing device.

[0053] The dishwasher provided in the embodiment of the present invention has the same technical features as the steam drying and sterilizing device provided in the above embodiment, and therefore can solve the same technical problems and achieve the same technical effects.

[0054] The steam drying sterilization device, method, and computer program product of the dishwasher provided in the embodiments of the present invention include a computer-readable storage medium storing program code. The instructions included in the program code can be used to execute the methods described in the previous method embodiments. For specific implementation, please refer to the method embodiments and will not be repeated here.

[0055] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the above-described systems and devices can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0056] In addition, in the description of the embodiments of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0057] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0058] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0059] Finally, it should be noted that the above embodiments are only specific implementation methods of the present invention, which are used to illustrate the technical solutions of the present invention, rather than to limit them. The scope of protection of the present invention is not limited thereto. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that any person skilled in the art can modify or easily conceive of changes to the technical solutions described in the above embodiments within the technical scope disclosed by the present invention, or replace some of the technical features therein with equivalents. Such modifications, changes or replacements do not deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A steam drying and sterilizing device, characterized in that: It includes a steam generating module, a steam storage chamber, a temperature sensor, a pressure sensor and a controller; the steam generating module is connected to the steam storage chamber; the controller is connected to the steam generating module, the steam storage chamber, the temperature sensor and the pressure sensor respectively; The controller is used to control the steam generating module to generate steam after receiving a start instruction, and the steam enters the steam storage chamber; The temperature sensor is used to detect the temperature of the steam in the steam storage chamber; The pressure sensor is used to detect the pressure of steam in the steam storage chamber; The controller is configured to control the steam storage chamber to communicate with a preset space when the temperature and pressure of the steam in the steam storage chamber meet a preset first condition, so that the steam in the steam storage chamber enters the preset space to dry and sterilize the washed items in the preset space; The first preset condition is that the pressure of the steam in the steam storage chamber is greater than or equal to the preset pressure, and the temperature of the steam in the steam storage chamber is greater than a first preset temperature, the preset pressure is a pressure higher than atmospheric pressure, and the first preset temperature is higher than 100° C. The device further includes an evacuation motor; the evacuation motor is connected to the controller; the evacuation motor is in communication with the preset space; the controller is further configured to control the evacuation motor to extract air from the preset space after receiving a drying instruction; The controller is further configured to control the evacuation motor to stop working when the air pressure in the preset space is less than or equal to a first preset pressure, and to control the evacuation motor to extract air from the preset space when a first preset time has passed since the evacuation motor stopped working and the number of times the evacuation motor has worked is less than a preset number; The controller is further configured to control the steam generating module to stop generating steam and control the steam storage chamber to stop communicating with the preset space when the number of times the evacuation motor works is equal to a preset number and a second preset time has passed since the evacuation motor stopped working.

2. The device according to claim 1, characterized in that The controller is further configured to control the steam generating module to stop generating steam when the temperature of the steam storage chamber and the pressure of the steam storage chamber meet a preset first condition; The controller is further configured to control the steam generating module to generate steam when the temperature of the steam storage chamber and the pressure of the steam storage chamber meet a preset second condition.

3. The device according to claim 1, characterized in that The device also includes a compressor; the controller is also used to control the steam storage chamber to stop communicating with the preset space after obtaining a preset time of the start instruction, control the vacuum motor to extract the air in the preset space, and control the compressor to blow clean air into the preset space.

4. The device according to claim 3, characterized in that The compressor includes an air filter device; the compressor blows clean air into the preset space through the air filter device.

5. The device according to claim 1, characterized in that The center of gravity of the steam generating module is lower than the center of gravity of the steam storage chamber.

6. A steam drying sterilization method, characterized in that: The method is applied to a steam drying and sterilizing device; the device includes a steam generating module, a steam storage chamber, a temperature sensor, a pressure sensor and a controller, and the method includes: After receiving the start instruction, the controller controls the steam generating module to generate steam, and the steam enters the steam storage chamber; The temperature sensor detects the temperature of the steam in the steam storage chamber; the pressure sensor detects the pressure of the steam in the steam storage chamber; When the temperature and pressure of the steam in the steam storage chamber meet a preset first condition, the controller controls the steam storage chamber to communicate with a preset space, so that the steam in the steam storage chamber enters the preset space to dry and sterilize the washed items in the preset space; The first preset condition is that the pressure of the steam in the steam storage chamber is greater than or equal to the preset pressure, and the temperature of the steam in the steam storage chamber is greater than a first preset temperature, the preset pressure is a pressure higher than atmospheric pressure, and the first preset temperature is higher than 100° C. The device further includes an evacuation motor; the evacuation motor is connected to the controller; the evacuation motor is in communication with the preset space; The controller is further configured to control the vacuum motor to extract air from the preset space after receiving a drying instruction; The controller is further configured to control the evacuation motor to stop working when the air pressure in the preset space is less than or equal to a first preset pressure, and to control the evacuation motor to extract air from the preset space when a first preset time has passed since the evacuation motor stopped working and the number of times the evacuation motor has worked is less than a preset number; The controller is further configured to control the steam generating module to stop generating steam and control the steam storage chamber to stop communicating with the preset space when the number of times the evacuation motor works is equal to a preset number and a second preset time has passed since the evacuation motor stopped working.

7. A dishwasher, characterized in that: It comprises the steam drying and sterilizing device according to any one of claims 1 to 5 and a dishwasher body; the dishwasher body comprises a preset space connected to the steam storage chamber of the steam drying and sterilizing device.

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