Steam generating device and cleaning equipment

Abstract

The present invention discloses a steam generating device and a cleaning device. The steam generating device includes a liquid storage structure having one or more liquid outlets; a heating structure having a cavity, an exhaust port and a liquid inlet communicated with the cavity, the heating structure further having a heating part, the liquid inlet is communicated with the liquid outlet, the liquid inside the liquid storage structure enters the inside of the cavity through the liquid outlet and the liquid inlet to be vaporized to form steam, and the steam is discharged from the exhaust port. The present invention also discloses a cleaning device. The cleaning device includes a body having a mounting part; a cleaning part; and the above-mentioned steam generating device, and the steam generating device is installed inside the mounting part. The steam generating device and the cleaning device disclosed by the present invention can solve the problem that the existing steam cleaning device is inconvenient to generate steam.

Description

Technical Field

[0001] The present invention belongs to the technical field related to cleaning equipment, and particularly relates to a steam generating device and a cleaning equipment. Background Art

[0002] With the continuous progress of living conditions and technological levels, cleaning equipment has the advantages of being convenient to use and having a good cleaning effect. Therefore, cleaning equipment has gradually begun to replace manual cleaning and widely appears in life and work. Currently, various types of steam cleaning equipment that use steam for cleaning and sterilization already exist in the market.

[0003] However, currently, the devices for generating steam in steam cleaning equipment all use the "boiler type", that is, directly heating the cavity to boil a certain volume of water inside the cavity to generate steam. Since it is necessary to boil the water in the volume to generate steam, a relatively large power is required for heating. At the same time, a relatively high air pressure will be generated inside the cavity, and the relatively high air pressure will damage the cavity and the pipeline, resulting in inconvenience in generating steam and having safety problems. Moreover, using the "boiler type" heating and boiling will also generate scale, which is not easy to clean and has a poor steam generation effect.

[0004] Therefore, it is necessary to improve the existing technology to overcome the defects in the existing technology. Summary of the Invention

[0005] Therefore, the technical problem to be solved by the present invention is that the existing steam cleaning equipment has the problem of inconvenient steam generation.

[0006] To solve the above technical problem, the present invention provides a steam generating device. The steam generating device includes a liquid storage structure having one or more liquid outlets; a heating structure having a cavity, an exhaust port and a liquid inlet communicated with the cavity, the heating structure further having a heating part, the liquid inlet is communicated with the liquid outlet, and the liquid inside the liquid storage structure enters the inside of the cavity through the liquid outlet and the liquid inlet to be vaporized into steam, and the steam is discharged from the exhaust port.

[0007] Optionally, the heating part is accommodated inside the cavity.

[0008] Optionally, the heating structure further includes a heating plate, the heating plate is embedded inside the cavity and divides the cavity into a heating chamber and an installation chamber, the exhaust port and the liquid inlet are communicated with the heating chamber, the heating part is arranged inside the installation chamber, and the heating part abuts against the heating plate.

[0009] Optionally, the heating part includes an electric heating tube and / or an electric heating plate and / or an electric heating wire.

[0010] Optionally, the surface of the heating plate facing the heating chamber is the heating surface, and a raised structure is provided on the heating surface, and the raised structure is arranged in alignment with the liquid inlet.

[0011] Optionally, the surface of the heating plate facing the heating chamber is the heating surface, and the heating surface slopes downward along the direction from the liquid inlet to the steam outlet.

[0012] Optionally, the heating structure further includes a flow buffering structure, and the flow buffering structure is arranged on the heating surface and between the steam outlet and the liquid inlet.

[0013] Optionally, the flow buffering structure includes a flow guiding rib and / or a raised structure and / or a groove structure.

[0014] Optionally, there are multiple liquid outlets, and the multiple liquid outlets are arranged at intervals along the first direction. There are multiple liquid inlets, and the multiple liquid inlets are respectively arranged in alignment with the liquid outlets. There is one or more steam outlets. When there are multiple steam outlets, the multiple steam outlets are arranged at intervals along the first direction.

[0015] Optionally, there are multiple liquid inlets, and the multiple liquid inlets are arranged at intervals along the first direction. The heating structure further includes at least one partition plate, and the partition plate is arranged in the cavity to divide the cavity into multiple flow channels. Each liquid inlet corresponds to a flow channel, and each flow channel has a corresponding steam outlet.

[0016] Optionally, the flow area of the flow channel gradually increases first and then gradually decreases from the liquid inlet towards the steam outlet.

[0017] Optionally, the steam generating device further includes a liquid absorbing structure accommodated inside the liquid storage structure. The liquid absorbing structure covers the inlet end of the liquid outlet, and the liquid absorbing structure is used to guide liquid to the liquid outlet.

[0018] Optionally, the liquid absorbing structure includes at least one of absorbent cotton and absorbent cloth.

[0019] Optionally, the steam generating device further includes a connecting piece, and the connecting piece is arranged between the liquid inlet and the liquid outlet. The liquid inlet, the liquid outlet and the connecting piece form a liquid passing channel; a stop structure, and the stop structure is movably arranged on the liquid storage structure and / or the connecting piece, and the stop structure opens or closes the liquid passing channel.

[0020] Optionally, the stop structure includes a flow regulating valve, and the flow regulating valve is arranged on the connecting piece.

[0021] Optionally, the stop structure includes at least one stop block, and the stop block is movably arranged inside the liquid storage structure. The steam generating device further includes an electromagnet, and the electromagnet is arranged outside the liquid storage structure and is inductively matched with the stop block. The electromagnet controls the movement of the stop block to open or close the liquid passing channel.

[0022] Optionally, there are multiple stoppers, including a first stopper and a second stopper. The electromagnet includes a first electromagnet and a second electromagnet, which are symmetrically arranged. The first electromagnet is inductively matched with the first stopper, and the first electromagnet controls the movement of the first stopper to open or close part of the liquid passage. The second electromagnet is inductively matched with the second stopper, and the second electromagnet controls the movement of the second stopper to open or close another part of the liquid passage.

[0023] Optionally, the steam generating device further includes a temperature sensor disposed on the heating structure; a controller disposed on the heating structure or the body of the cleaning device, and the controller is connected to the temperature sensor, the electromagnet and the heating part of the steam generating device; a battery compartment disposed on the heating structure, a power supply is installed inside the battery compartment, and the power supply is connected to the controller.

[0024] The present invention also provides a cleaning device. The cleaning device includes a body with a mounting portion thereon; a cleaning member; and the above-mentioned steam generating device, which is installed inside the mounting portion.

[0025] Optionally, the cleaning device further includes a box body installed on the body; a pump body installed on the body, the liquid inlet end of the pump body is communicated with the box body, and the liquid outlet end of the pump body is communicated with the liquid storage structure of the steam generating device.

[0026] The technical solution provided by the present invention has the following advantages:

[0027] In the steam generating device provided by the present invention, the liquid storage structure and the heating structure are isolated. The liquid inside the liquid storage structure enters the liquid inlet of the heating structure through the liquid outlet, so as to enter the cavity of the heating structure. The heating structure has a heating part, and the heating part can evaporate the liquid that enters the cavity in real time and generate steam. The generated steam is provided to the cleaning device through the steam outlet of the heating structure. By adopting the method of heating and evaporating the liquid that enters the cavity in real time to generate steam, the heating power is effectively reduced, and at the same time, the controllability of the steam is improved, the steam generation efficiency is increased, the phenomenon of high-pressure gas generation is avoided, and the safety of the cleaning device is improved.

[0028] In the cleaning device provided by the present invention, the steam generation efficiency is improved by setting the above-mentioned steam generating device, thereby improving the cleaning efficiency and enhancing the user experience. Description of the Drawings

[0029] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0030] Figure 1 FIG. 4 is a schematic perspective view of the steam generating device provided in Embodiment 1 of the present invention;

[0031] Figure 2 FIG. 5 is a front view of the steam generating device provided in Embodiment 1 of the present invention;

[0032] Figure 3 is Figure 2 a sectional view taken along line A-A of

[0033] Figure 4 is Figure 2 a sectional view taken along line B-B of

[0034] Figure 5 is Figure 2 a sectional view taken along line C-C of

[0035] Explanation of reference numerals:

[0036] 100 - liquid storage structure; 101 - liquid outlet; 200 - heating structure; 2001 - liquid inlet; 201 - steam outlet; 202 - heating part; 203 - installation cavity; 204 - heating cavity; 300 - flow - buffering structure; 400 - heating plate; 401 - heating surface; 500 - connecting piece; 501 - liquid - passing channel; 600 - stop structure; 700 - partition board; 800 - flow - through channel. Specific embodiments

[0037] The following will clearly and completely describe the technical solutions of the present invention with reference to the drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. The present invention will be described in detail below with reference to the drawings and in combination with the embodiments. It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0038] It should be noted that the terms "first", "second", etc. in the description and claims of the present invention and the above - mentioned drawings are used to distinguish similar objects, and do not necessarily need to describe a specific order or sequence.

[0039] In the present invention, unless otherwise specified, the orientation terms such as "upper", "lower", "top", and "bottom" generally refer to the directions shown in the drawings or to the vertical, perpendicular, or gravitational directions of the components themselves. Similarly, for the convenience of understanding and description, "inner" and "outer" refer to the inner and outer of the contours of the respective components themselves, but the above orientation terms are not used to limit the present invention.

[0040] The present invention solves the problem that the steam cleaning device in the prior art is inconvenient to generate steam.

[0041] Embodiment 1

[0042] This embodiment provides a steam generating device. As Figures 1 to 5 shown, the steam generating device includes a liquid storage structure 100 and a heating structure 200. The liquid storage structure 100 has a liquid outlet 101. The heating structure 200 has a cavity, an exhaust port 201 and a liquid inlet 2001 communicated with the cavity. The heating structure 200 also has a heating part 202. The liquid inlet 2001 is communicated with the liquid outlet 101. The liquid inside the liquid storage structure 100 enters the inside of the cavity through the liquid outlet 101 and the liquid inlet 2001 to be vaporized to form steam. The steam is discharged from the exhaust port 201, and the steam discharged from the exhaust port 201 can be used to provide steam to the cleaning part of the cleaning device.

[0043] Specifically, the liquid storage structure 100 and the heating structure 200 are arranged separately. The liquid inside the liquid storage structure 100 enters the liquid inlet 2001 of the heating structure 200 through the liquid outlet 101 to enter the inside of the cavity of the heating structure 200. The heating structure 200 has a heating part 202, and the heating part 202 can evaporate the liquid that enters the inside of the cavity in real time and generate steam. The generated steam is provided to the cleaning device through the exhaust port 201 of the heating structure 200. By adopting the method of heating and evaporating the liquid that enters the inside of the cavity in real time to generate steam, the heating power is effectively reduced, and at the same time, the controllability of the steam is improved, the steam generation efficiency is increased, and the phenomenon of generating high-pressure gas is also avoided, improving the safety of the cleaning device.

[0044] In this embodiment, according to the different setting positions of the heating part 202, two different implementation manners are provided, which are specifically as follows.

[0045] In a specific implementation manner not shown in the figure, the heating part 202 is accommodated inside the cavity, and the heating part 202 is arranged opposite to the liquid inlet 2001.

[0046] Specifically, after the liquid inside the liquid storage structure 100 enters the inside of the cavity, the liquid drops onto the heating part 202 in sequence. At this time, the heating part 202 can evaporate the liquid that drops onto the heating part 202 in real time to generate steam, and the steam will be discharged from the exhaust port 201 out of the cavity.

[0047] Of course, it can also be that the liquid entering from the liquid inlet 2001 can flow through the heating part 202. At this time, the heating part 202 can be arranged in a dislocation manner with the liquid inlet 2001.

[0048] Such as Figure 1 、 Figure 3 and Figure 5 In the specific embodiments shown, the heating structure 200 further includes a heating plate 400. The heating plate 400 is embedded inside the cavity and divides the cavity into a heating chamber 204 and an installation chamber 203. The exhaust port 201 and the liquid inlet 2001 are communicated with the heating chamber 204. The heating part 202 is arranged inside the installation chamber 203, and the heating part 202 abuts against the heating plate 400.

[0049] Specifically, the liquid enters the inside of the heating chamber 204 from the liquid inlet 2001. The installation part is arranged inside the heating chamber 204 and heats the heating plate 400. The liquid that enters the inside of the heating chamber 204 will drop onto the heating plate 400. The heating part 202 heats the heating plate 400. The heating plate 400 has a high temperature and evaporates the liquid that drops onto the heating plate 400 to generate steam. The steam is discharged from the exhaust port 201 to the outside of the heating structure 200.

[0050] Further, the surface of the heating plate 400 facing the heating chamber 204 is the heating surface 401. The height of the heating surface 401 gradually increases in the direction from the exhaust port 201 towards the liquid inlet 2001 to be inclined, that is, the heating surface 401 is inclined downward in the direction from the liquid inlet 2001 to the exhaust port 201. Among them, the inclined heating surface 401 can make the liquid that drops onto the heating surface 401 but is not completely evaporated flow along the surface of the heating surface 401, so that the liquid is gradually evaporated during the flowing process, and the liquid flowing towards the exhaust port 201 can improve the efficiency of the steam flowing out from the exhaust port 201.

[0051] Of course, the inclination direction of the heating surface 401 is not limited to the above structural form, and it can also be inclined in the reverse direction, taking the contact area between the liquid and the heating surface 401 into account.

[0052] Such as Figure 1 and Figure 3 As shown, the heating structure 200 further includes a flow slowing structure 300. The flow slowing structure 300 is arranged on the heating surface 401.

[0053] Specifically, the flow conversion structure can assist in evaporating the liquid, that is, the flow conversion structure can block the liquid on the heating surface 401 and increase the flow path of the liquid to enhance the evaporation efficiency.

[0054] Further, the flow retardation structure 300 is arranged between the steam outlet 201 and the liquid inlet 2001, so that the liquid inlet 2001 enters the heating surface 401. The flow retardation structure 300 on the heating surface 401 increases the contact area between the liquid and the heating surface 401, enhancing the evaporation efficiency.

[0055] In this embodiment, the flow retardation structure 300 can be a guide rib, a convex structure, or a groove structure, so as to enhance the contact area between the liquid and the heating surface 401 and the steam generation efficiency when the liquid flows on the heating surface 401 and when the liquid flows through the flow conversion structure.

[0056] In this embodiment, the heating part 202 can be one of components with heating functions such as an electric heating tube, an electric heating wire, and an electric heating plate 400.

[0057] Such as Figure 1 、 Figure 2 and Figure 5 As shown, one or more liquid outlets 101 can be provided. When multiple liquid outlets 101 are provided, the multiple liquid outlets 101 are arranged at intervals in the first direction. Multiple liquid inlets 2001 are provided, and the multiple liquid inlets 2001 are respectively arranged opposite to the liquid outlets 101.

[0058] Further, the first direction is the extending direction of the liquid storage structure 100. The multiple liquid outlets 101 are arranged at intervals to facilitate the liquid inside the liquid storage structure 100 to flow out of the liquid outlet 101 evenly and at a constant speed.

[0059] Further, the liquid storage structure 100 is a liquid storage pipe, and the first direction is the axial extending direction of the liquid storage pipe.

[0060] Such as Figure 5 As shown, the steam generating device further includes a connecting piece 500 and a stop structure 600. The connecting piece 500 is arranged between the liquid inlet 2001 and the liquid outlet 101, and the liquid inlet 2001, the liquid outlet 101, and the connecting piece 500 form a liquid passing channel 501; the stop structure 600 is movably arranged on the liquid storage structure 100, and the stop structure 600 opens or closes the liquid passing channel 501.

[0061] Furthermore, the stop structure 600 includes a stop block which is movably arranged inside the liquid storage structure 100. The steam generating device further includes an electromagnet which is arranged outside the liquid storage structure 100 and is inductively engaged with the stop block. The electromagnet controls the movement of the stop block to open or close the liquid passing channel 501. By using the magnetic attraction cooperation between the electromagnet and the stop block to control the movement of the stop block inside the liquid storage structure 100, the size of the liquid outlet 101 is adjusted, so as to control the flow rate of the liquid inside the liquid storage structure 100 flowing into the cavity.

[0062] In this embodiment, there is one stop block, and there can also be multiple stop blocks. When there are multiple stop blocks, the multiple stop blocks include a first stop block and a second stop block. The electromagnet includes a first electromagnet and a second electromagnet. The first electromagnet and the second electromagnet are symmetrically arranged. The first electromagnet is inductively engaged with the first stop block, and the first electromagnet controls the movement of the first stop block to open or close a part of the liquid passing channel 501. The second electromagnet is inductively engaged with the second stop block, and the second electromagnet controls the movement of the second stop block to open or close another part of the liquid passing channel 501.

[0063] Specifically, by providing two stop blocks and two electromagnets, the controllability can be increased, and the amount of liquid flowing from the liquid storage structure 100 into the cavity can be better controlled.

[0064] In this embodiment, the stop structure 600 can also be movably arranged on the connecting member 500, and the stop structure 600 opens or closes the liquid passing channel 501.

[0065] Furthermore, the stop structure 600 includes a flow regulating valve. The flow rate of the liquid inside the liquid storage structure 100 flowing into the cavity is controlled by controlling the flow regulating valve.

[0066] It should be noted that it can also be arranged on both the liquid storage structure 100 and the connecting member 500 simultaneously to achieve dual control, so as to increase the controllability of the liquid entering the cavity and further improve the steam generation efficiency.

[0067] Such as Figure 1 、 Figure 2 and Figure 5 shown, there can be one or multiple exhaust ports 201. When there are multiple exhaust ports 201, the multiple exhaust ports 201 are arranged at intervals along the first direction.

[0068] Specifically, by providing multiple exhaust ports 201, the steam is dispersed and ejected from the inside of the cavity, which is beneficial to uniformly providing steam to the cleaning member and also increases the contact area between the steam and the cleaning member.

[0069] Further, the heating structure 200 further includes at least one partition 700. The partition 700 is disposed in the cavity to divide the cavity into a plurality of flow channels 800. Each liquid inlet 2001 corresponds to one flow channel 800, and each flow channel 800 has a corresponding steam outlet 201.

[0070] Specifically, there are a plurality of steam outlets 201, and the cavity is divided into a plurality of diversion channels by the partition 700, so that the internal liquid entering the cavity from the liquid storage structure 100 forms steam in different diversion channels respectively, and flows along the diversion channels and is discharged through the steam outlets 201, so as to improve the uniform fluidity of the steam.

[0071] Such as Figure 3 As shown, the flow area of the flow channel 800 gradually increases first and then gradually decreases from the liquid inlet 2001 towards the steam outlet 201.

[0072] Specifically, the liquid enters the interior of the flow channel 800 from the liquid inlet 2001 and generates steam. The flow area of the flow channel 800 first becomes larger to facilitate the storage of steam. First becoming larger and then smaller can cause the steam to form a steam jet effect at the steam outlet 201 under the action of pressure, and better supply the steam to the cleaning device.

[0073] In this embodiment, the steam generating device further includes a temperature sensor, a controller, and a battery compartment. The temperature sensor is disposed on the heating structure 200, the controller is disposed on the heating structure 200 or the body of the cleaning device, the controller is electrically connected to the temperature sensor, the electromagnet of the steam generating device, and the heating part 202, the battery compartment is disposed on the heating structure 200, a power supply is installed inside the battery compartment, and the power supply is electrically connected to the controller.

[0074] Specifically, the temperature of the heating structure 200 is detected in real time by the temperature sensor. When the temperature of the heating structure 200 reaches the highest temperature in the optimal temperature range for generating steam, a signal is transmitted to the controller, and the controller controls the heating part 202 to stop heating; when the temperature sensor detects that the temperature of the heating structure 200 is at the lowest temperature in the optimal temperature range for generating steam, a signal is transmitted to the controller, and the controller controls the heating part 202 to start heating, so as to reduce power consumption and improve steam generation efficiency.

[0075] Further, a battery is placed inside the battery compartment to supply power through the battery, so as to achieve overall independence without the need for wire connection to the cleaning device, and it is convenient to disassemble.

[0076] In this embodiment, the battery can be a dry battery, a storage battery, or other types of batteries.

[0077] Embodiment 2

[0078] The difference between this embodiment and Embodiment 1 is that, in this embodiment, the steam generating device further includes a liquid absorbing structure accommodated inside the liquid storage structure 100. The liquid absorbing structure covers the inlet end of the liquid outlet 101 and is used to guide liquid to the liquid outlet 101.

[0079] Specifically, the liquid absorbing structure has the function of absorbing liquid, which can suck the liquid inside the liquid storage structure 100 into the inside of the liquid absorbing structure and make the liquid evenly distributed inside the liquid absorbing structure. When there is enough liquid inside the liquid absorbing structure and liquid is continuously supplied to the inside of the liquid storage structure 100, the liquid inside the liquid absorbing structure will flow from the liquid outlet 101 to the cavity. By setting the liquid absorbing structure, the liquid inside the liquid storage structure 100 can be effectively controlled to flow out evenly from the liquid outlet 101, and at the same time, the liquid flow rate can also be controlled.

[0080] It should be noted that the liquid absorbing structure includes one of absorbent cotton and absorbent cloth. Of course, the liquid absorbing structure can also be other similar structural components.

[0081] Embodiment 3

[0082] The difference between this embodiment and Embodiment 1 is that, in this embodiment, the surface of the heating plate 400 facing the heating cavity 204 is the heating surface 401, and a raised structure is provided on the heating surface 401. The raised structure is arranged in alignment with the liquid inlet 2001 to increase the flow path of the liquid flowing in from the liquid inlet 2001.

[0083] Specifically, the liquid entering the heating surface 401 from the liquid inlet 2001 will drop on the raised structure, and the liquid will flow along the outer surface of the raised structure. It may also disperse the liquid to make the liquid splash, so as to increase the contact area between the liquid and the heating surface 401. By increasing the contact area between the liquid and the heating surface 401, the evaporation efficiency of the liquid is improved.

[0084] Furthermore, there are various types of raised structures, and the specific shape is not limited in this embodiment, as long as it can increase the contact area between the liquid and the heating surface 401.

[0085] Embodiment 4

[0086] This embodiment provides a cleaning device. The cleaning device includes a body, a cleaning member, and the steam generating device in Embodiment 1. There is an installation part on the body, and the steam generating device is installed inside the installation part.

[0087] Furthermore, the cleaning device further includes a box body and a pump body. The box body is installed on the body, the pump body is installed on the body, the liquid inlet end of the pump body is communicated with the box body, and the liquid outlet end of the pump body is communicated with the liquid storage structure 100 of the steam generating device.

[0088] Liquid can be supplied into the interior of the liquid storage structure 100 through the pump body to ensure that there is sufficient liquid inside the liquid storage structure 100.

[0089] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0090] 1. By adopting the method of heating and evaporating the liquid that enters the interior of the cavity in real time to generate steam, the heating power is effectively reduced.

[0091] 2. The controllability of the steam is improved, the steam generation efficiency is increased, the phenomenon of high-pressure gas generation is avoided, and the safety of the cleaning equipment is improved.

[0092] Obviously, the above-described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, those of ordinary skill in the art can make other different forms of changes or modifications without creative efforts, and all of them should fall within the protection scope of the present invention.

Claims

1. A steam generating device, characterized in that it includes: a liquid storage structure (100) having one or more liquid outlets (101); a heating structure (200) having a cavity, a steam outlet (201) and a liquid inlet (2001) communicated with the cavity. The heating structure (200) further includes at least one partition (700) disposed in the cavity to divide the cavity into a plurality of flow channels (800). A plurality of steam outlets (201) are provided, and each of the flow channels (800) has a corresponding steam outlet (201). The heating structure (200) further has a heating portion (202). The liquid inlet (2001) is communicated with the liquid outlet (101). The liquid inside the liquid storage structure (100) enters the inside of the cavity through the liquid outlet (101) and the liquid inlet (2001) to be vaporized into steam, and the steam is discharged from the steam outlet (201); a connecting member (500) disposed between the liquid inlet (2001) and the liquid outlet (101), and the liquid inlet (2001), the liquid outlet (101) and the connecting member (500) form a liquid passing channel (501); a stop structure (600) movably disposed on the liquid storage structure (100) and / or the connecting member (500), and the stop structure (600) opens or closes the liquid passing channel (501).

2. The steam generating device according to claim 1, characterized in that the heating portion (202) is accommodated inside the cavity.

3. The steam generating device according to claim 1, characterized in that the heating structure (200) further includes a heating plate (400) embedded inside the cavity and dividing the cavity into a heating chamber (204) and an installation chamber (203). The steam outlet (201) and the liquid inlet (2001) are communicated with the heating chamber (204). The heating portion (202) is disposed inside the installation chamber (203), and the heating portion (202) abuts against the heating plate (400).

4. The steam generating device according to claim 3, characterized in that the heating portion (202) includes an electric heating tube and / or an electric heating plate (400) and / or an electric heating wire.

5. The steam generating device according to claim 3, characterized in that the surface of the heating plate (400) facing the heating chamber (204) is a heating surface (401), and a raised structure is provided on the heating surface (401), and the raised structure is disposed opposite to the liquid inlet (2001).

6. The steam generating device according to claim 3, characterized in that The surface of the heating plate (400) facing the heating chamber (204) is a heating surface (401), and the heating surface (401) slopes downward in the direction from the liquid inlet (2001) to the exhaust port (201).

7. The steam generating device according to claim 6, wherein the heating structure (200) further includes a flow buffering structure (300), the flow buffering structure (300) is arranged on the heating surface (401), and the flow buffering structure (300) is arranged between the exhaust port (201) and the liquid inlet (2001).

8. The steam generating device according to claim 7, wherein the flow buffering structure (300) includes a flow guiding rib and / or a convex structure and / or a groove structure.

9. The steam generating device according to claim 1, wherein a plurality of liquid outlets (101) are provided, the plurality of liquid outlets (101) are arranged at intervals in a first direction, a plurality of liquid inlets (2001) are provided, the plurality of liquid inlets (2001) are respectively arranged opposite to the liquid outlets (101), and the plurality of exhaust ports (201) are arranged at intervals in the first direction.

10. The steam generating device according to claim 1, wherein a plurality of liquid inlets (2001) are provided, the plurality of liquid inlets (2001) are arranged at intervals in a first direction, and each liquid inlet (2001) corresponds to one flow passage (800).

11. The steam generating device according to claim 10, wherein the flow area of the flow passage (800) gradually increases first and then gradually decreases in the direction from the liquid inlet (2001) to the exhaust port (201).

12. The steam generating device according to any one of claims 1 to 11, wherein the steam generating device further includes a liquid absorbing structure accommodated inside the liquid storage structure (100), the liquid absorbing structure covers the inlet end of the liquid outlet (101), and the liquid absorbing structure is used for guiding liquid to the liquid outlet (101).

13. The steam generating device according to claim 12, wherein the liquid absorbing structure includes at least one of absorbent cotton and absorbent cloth.

14. The steam generating device according to claim 1, wherein the stop structure (600) includes a flow regulating valve, and the flow regulating valve is arranged on the connecting member (500).

15. The steam generating device according to claim 1, wherein the stop structure (600) includes at least one stop block, the stop block is movably arranged inside the liquid storage structure (100), the steam generating device further includes an electromagnet, the electromagnet is arranged outside the liquid storage structure (100) and is inductively matched with the stop block, and the electromagnet controls the movement of the stop block to open or close the liquid passing channel (501).

16. The steam generating device according to claim 15, wherein A plurality of stoppers are provided. The plurality of stoppers include a first stopper and a second stopper. The electromagnet includes a first electromagnet and a second electromagnet. The first electromagnet and the second electromagnet are symmetrically arranged. The first electromagnet is inductively cooperated with the first stopper. The first electromagnet controls the movement of the first stopper to open or close a part of the liquid passage (501). The second electromagnet is inductively cooperated with the second stopper. The second electromagnet controls the movement of the second stopper to open or close another part of the liquid passage (501).

17. The steam generating device according to any one of claims 1 to 11, wherein the steam generating device further comprises: a temperature sensor disposed on the heating structure (200); a controller disposed on the heating structure (200) or the body of the cleaning device. The controller is connected to the temperature sensor, the electromagnet of the steam generating device, and the heating part (202); a battery compartment disposed on the heating structure (200). A power source is installed inside the battery compartment, and the power source is connected to the controller.

18. A cleaning device, wherein the cleaning device comprises: a body having a mounting portion thereon; a cleaning member; the steam generating device according to any one of claims 1 to 17, and the steam generating device is installed inside the mounting portion.

19. The cleaning device according to claim 18, wherein the cleaning device further comprises: a box body installed on the body; a pump body installed on the body. The liquid inlet end of the pump body is communicated with the box body, and the liquid outlet end of the pump body is communicated with the liquid storage structure (100) of the steam generating device.

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