Guide rod for steam generator, steam generator and steam cleaning equipment

Abstract

The utility model provides a guide rod for a steam generator, the steam generator and steam cleaning equipment, the steam generator comprises a pipe body, the guide rod is arranged in the pipe body, the guide rod is provided with a water inlet used for water inflow and a steam outlet used for steam outflow, a vaporization cavity is formed between the guide rod and the pipe body, and the vaporization cavity is communicated with the pipe body. The water inlet is communicated with the vaporization cavity, and the steam outlet is communicated with the vaporization cavity; the steam outlet has a preset first cross sectional area so as to increase the pressure in the vaporization cavity; the first cross section area ranges from 0.0225 pi mm < 2 > to 0.25 pi mm < 2 >. According to the guide rod for the steam generator, the steam generator and the steam cleaning equipment, the vaporization efficiency of water in the steam generator is improved, the atomization effect of steam is improved, the situation that water drips when the steam cleaning equipment is used is prevented, and the use experience of a user is improved.

Description

Technical Field

[0001] The present disclosure relates to the field of cleaning technology, and in particular to a guide rod for a steam generator, a steam generator and a steam cleaning device. Background Art

[0002] With the improvement of living standards, steam cleaning equipment is entering more and more families and becoming a daily cleaning tool. Steam cleaning equipment requires the use of a steam generator to generate steam, but the current steam generator has poor efficiency in vaporizing water in the steam generator, resulting in dripping when using the steam cleaning equipment, which reduces the user experience. Utility Model Content

[0003] In view of this, the purpose of the present disclosure is to provide a guide rod for a steam generator, a steam generator and a steam cleaning device, which can improve the vaporization efficiency of water in the steam generator and improve the atomization effect of steam.

[0004] In order to achieve one of the above disclosed purposes, the present disclosure provides a guide rod for a steam generator, the steam generator comprising a tube body, the guide rod being arranged in the tube body, the guide rod being provided with a water inlet for water inlet and a steam outlet for steam outlet, a vaporization chamber being formed between the guide rod and the tube body, the water inlet being communicated with the vaporization chamber, the steam outlet being communicated with the vaporization chamber; the steam outlet having a preset first cross-sectional area to increase the pressure in the vaporization chamber; the first cross-sectional area being 0.0225πmm 2 -0.25πmm 2 between.

[0005] As a further improvement of an embodiment of the present disclosure, the first cross-sectional area is 0.0225πmm 2 -0.16πmm 2 between.

[0006] As a further improvement of an embodiment of the present disclosure, the diameter of the steam outlet is between 0.3 mm and 1 mm.

[0007] As a further improvement of an embodiment of the present disclosure, the guide rod includes an annular blocking portion and a bare rod portion distributed along the axial direction, and the steam outlet is arranged on the bare rod portion; when the guide rod is installed in the tube body, a gap for water flow is formed between the annular blocking portion and the tube body.

[0008] As a further improvement of an embodiment of the present disclosure, the gap between the annular blocking portion and the tube body is between 0.1 mm and 0.5 mm on one side.

[0009] As a further improvement of an embodiment of the present disclosure, a guide groove is provided at one end of the guide rod, and a steam guide cavity is provided at the other end of the guide rod, and the guide groove and the steam guide cavity extend inward from the end surface of the guide rod; the water inlet is connected to the guide groove, and the steam outlet is connected to the steam guide cavity.

[0010] In order to achieve another of the above disclosed objectives, the present disclosure provides a steam generator, the steam generator comprising:

[0011] case;

[0012] A tube body is arranged in the shell, and a heating chamber is formed between the tube body and the shell;

[0013] A heating body, disposed in the heating chamber, for heating the water in the tube body;

[0014] A heat-insulating layer, disposed between the heating chamber and the shell, for heat-insulating the tube body and the heating body;

[0015] The guide rod described in any of the above items is installed in the tube body.

[0016] As a further improvement of an embodiment of the present disclosure, the steam generator is powered by a 20V battery pack. When powered by the 20V battery pack, the power is between 150W and 400W.

[0017] As a further improvement of an embodiment of the present disclosure, the steam generator also includes rubber plugs respectively arranged between the two ends of the tube body and the shell, and the two ends of the tube body are respectively supported on the corresponding rubber plugs; the shell includes a main body sleeved on the radial outside of the tube body and a water inlet end cover and a steam outlet end cover respectively located at the two ends of the main body; the rubber plugs are respectively arranged on the water inlet end cover and the steam outlet end cover; the two ends of the guide rod are respectively installed on the water inlet end cover and the steam outlet end cover; the water inlet end cover is provided with a water inlet channel, and the steam outlet end cover is provided with a steam outlet channel.

[0018] In order to achieve another of the above disclosed objectives, the present disclosure provides a steam cleaning device, the steam cleaning device comprising:

[0019] ontology;

[0020] The steam generator described in any one of the above items is arranged on the body and is used to heat water and output steam;

[0021] a water supply device, connected to the steam generator, comprising a water tank and a water pump for pumping water in the water tank into the steam generator;

[0022] A control device, used for controlling the operation of the steam generator and the water pump;

[0023] Wherein, a battery pack mounting seat is also provided on the main body for connecting a battery pack, and the battery pack provides power for the steam generator, the water pump and the control device.

[0024] Compared with the prior art, the guide rod for the steam generator provided by the present invention is provided with a first cross-sectional area of ​​the steam outlet on the guide rod set at 0.0225πmm 2 -0.25πmm 2 , which can increase the pressure in the vaporization chamber to improve the vaporization efficiency of water in the steam generator, and improve the atomization effect of the steam, prevent dripping when using the steam cleaning equipment, and improve the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic diagram of the structure of a guide rod provided in one embodiment of the present disclosure Figure 1 ;

[0026] Figure 2 A schematic diagram of the structure of a guide rod provided in one embodiment of the present disclosure Figure 2 ;

[0027] Figure 3 A schematic structural diagram of a steam generator provided in one embodiment of the present disclosure;

[0028] Figure 4 A schematic structural diagram of a steam cleaning device provided in one embodiment of the present disclosure;

[0029] Figure 5 A schematic diagram of the internal structure of a steam cleaning device provided in one embodiment of the present disclosure.

[0030] Marking Description:

[0031] 1. Main body; 2. Steam generator; 21. Shell; 211. Main body; 212. Water inlet cover; 2121. Water inlet channel; 2122. Through hole; 213. Steam outlet cover; 2131. Steam outlet channel; 22. Tube body; 23. Guide rod; 231. Water inlet; 232. Steam outlet; 233. Annular blocking part; 234. Steam guide cavity; 235. Guide groove; 236. Opening; 237. Bare rod; 238. Vaporization cavity; 24. Heating body; 25. Heat insulation component; 27. Rubber plug; 3. Water supply device; 31. Water tank; 32. Water pump; 5. Mounting seat; 6. Battery pack. DETAILED DESCRIPTION

[0032] The present disclosure will be described in detail below in conjunction with the specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present disclosure, and any structural, methodological, or functional changes made by a person skilled in the art based on these embodiments are all within the scope of protection of the present disclosure.

[0033] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present disclosure should be understood by people with ordinary skills in the field to which the present disclosure belongs. The "first", "second" and similar words used in the embodiments of the present disclosure do not represent any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing in front of the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0034] like Figure 1-3 As shown, the present disclosure provides a guide rod for a steam generator, the steam generator 2 includes a tube body 22, the tube body 22 has an inlet end and an outlet end, the guide rod 23 is arranged in the tube body 22, and the guide rod 23 is provided with a water inlet 231 for water intake and a steam outlet 232 for steam discharge, the water inlet 231 is located on both sides of the same cross section of the guide rod 23, and is symmetrically arranged, the water inlet 231 can also be multiple, evenly or unevenly arranged on different cross sections at one end of the guide rod 23, and the steam outlet 232 is arranged at the other end of the guide rod 23 as a pressurizing hole. A vaporization chamber 238 is formed between the guide rod 23 and the tube body 22, the water inlet 231 is connected to the vaporization chamber 238, and the steam outlet 232 is connected to the vaporization chamber 238; the steam outlet 232 has a preset first cross-sectional area to increase the pressure in the vaporization chamber 238; the first cross-sectional area is 0.0225πmm 2 -0.25πmm 2 If the first cross-sectional area of ​​the steam outlet 232 is too small, the steam in the vaporization chamber 238 cannot be well discharged from the vaporization chamber 238, which may affect the steam discharge effect of the steam cleaning device, thereby reducing the user experience. If the first cross-sectional area of ​​the steam outlet 232 is too large, it cannot well pressurize the water in the vaporization chamber 238, and dripping may still occur when using the steam cleaning device. The first cross-sectional area of ​​the steam outlet 232 can be specifically 0.0225πmm 2 、0.1πmm 2 、0.16πmm 2、0.25πmm 2 etc.; the specific first cross-sectional area of ​​the steam outlet 232 can be selected according to usage requirements.

[0035] The selection of the first cross-sectional area of ​​the steam outlet is related to the power of the steam generator. If the power of the steam generator is very large, the gas output will increase, and the size of the guide rod will also change accordingly. In some embodiments, a 20V power supply is used, the current is in the range of 7.5A-10A, the power is 150W-200W, and the gas output will be around 3g / min-4g / min. At this time, the first cross-sectional area is selected to be around 0.0225πmm2, and the diameter of the steam outlet is around 0.3mm. Here, the diameter can fluctuate by ±0.1mm. Through this pressurization, the gas is better vaporized in the vaporization chamber, and the steam effect at the gas outlet is improved.

[0036] In some embodiments, a 20V power supply is used, the current is 12.5A, the power is 250W, and the gas output will be around 5.2g / min-5.8g / min. At this time, the first cross-sectional area is selected to be 0.0625πmm2-0.09πmm2, and the diameter of the steam outlet is 0.5mm-0.6mm. Through this pressurization, the liquid stays in the vaporization chamber longer, thereby improving the vaporization effect.

[0037] In some embodiments, a 20V power supply is used, the current is in the range of 17.5A-20A, the power is 350W-400W, and the gas output is about 7.5g / min-8.5g / min. At this time, the first cross-sectional area is selected to be 0.25πmm 2 The diameter of the steam outlet is 1mm. Through this pressurization, the gas is vaporized better in the vaporization chamber, improving the steam effect at the outlet end.

[0038] In other embodiments, when the voltage, current and power of the power supply change, the first cross-sectional area can be adjusted accordingly, and the diameter of the corresponding steam outlet can also be adaptively changed. For example, when the power is 2250W, the diameter of the steam outlet is 1.5mm. However, the volume or mass of the equipment under such high power will also increase accordingly, which is not conducive to hand-held lifting for work.

[0039] The guide rod for the steam generator provided by the present disclosure is configured such that the first cross-sectional area of ​​the steam outlet 232 on the guide rod 23 is set at 0.0225πmm 2 -0.25πmm 2 , the pressure in the vaporization chamber 238 can be increased to improve the vaporization efficiency of water in the steam generator 2, and the atomization effect of the steam is improved, thereby preventing dripping when using the steam cleaning device and improving the user experience.

[0040] In one embodiment, the guide rod 23 includes an annular blocking portion 233 and a light rod portion 237 distributed in the axial direction, and the steam outlet 232 is arranged on the light rod portion 237; when the guide rod 23 is installed in the tube body 22, a gap for water flow is formed between the annular blocking portion 233 and the tube body 22. There are multiple annular blocking portions 233, and water can be vaporized in the cavity between two annular blocking portions 233. The annular blocking portion 233 can also be spiral, and water can be vaporized in the cavity between the gaps between the spirals.

[0041] When water enters from the inlet end of the tube body 22, it first flows into the cavity between the two annular blocking parts 233, and then flows into the next cavity from the gap between the annular blocking part 233 and the tube body 22. The gap between the annular blocking part 233 and the tube body 22 helps to slow down the speed of the water flow and increase the time for the water to flow in the vaporization chamber 238, so as to help increase the time for heating the water, thereby improving the degree of vaporization of the water; when water or steam moves into the vaporization chamber 238 around the light rod part 237, the water or steam flows out through the steam outlet 232 on the light rod part 237. Since the steam outlet 232 has a preset first cross-sectional area, it has the function of pressurizing the gas in the vaporization chamber 238, and the unvaporized water or water droplets are broken up and sprayed out by pressurization, thereby increasing the water content of the steam and improving the atomization effect of the steam, so that there will be no dripping problem.

[0042] In one embodiment, the steam outlet 232 includes a circle, and the diameter of the steam outlet 232 is between 0.3mm-1mm. If the diameter of the steam outlet 232 is less than 0.3mm, the steam in the vaporization chamber 238 cannot be well guided out from the vaporization chamber 238, which may affect the steam outlet effect of the steam cleaning device, thereby reducing the user's experience. If the diameter of the steam outlet 232 is greater than 1mm, it cannot well pressurize the water in the vaporization chamber 238, and when using the steam cleaning device, dripping may still occur. The specific diameter of the steam outlet 232 can be 0.3mm, 0.5mm, 0.8mm, 1mm, etc., and the specific diameter size can be set according to actual use requirements. Preferably, the diameter of the steam outlet 232 is 0.5mm. The internal pressure in the vaporization chamber 238 can be effectively increased, and the water droplets that are not vaporized in time are broken into water mist, thereby improving the atomization effect of the steam cleaning device. In other embodiments, the steam outlet 232 can be square, oval or other irregular shapes, etc., which are not specifically limited here.

[0043] In one embodiment, the gap between the annular blocking portion 233 and the tube body 22 is between 0.1 mm and 0.5 mm on one side. In the steam generator 2, since the guide rod 23 and the tube body 22 are both circular, when the guide rod 23 is arranged in the tube body 22, there is a gap between the annular blocking portion 233 on the guide rod 23 and the tube body 22, and the gap is between 0.1 mm and 0.5 mm. The gap between the annular blocking portion 233 and the tube body 22 can be 0.1 mm, 0.3 mm, 0.5 mm, etc. on one side; the specific size of the gap between the annular blocking portion 233 and the tube body 22 can be selected according to actual use requirements. If the gap between the annular blocking portion 233 and the tube body 22 is too small, the water will not flow well in the vaporization chamber 238, which is not conducive to the vaporization of water and may affect the steam discharge effect of the steam cleaning equipment. If the gap between the annular blocking portion 233 and the tube body 22 is too large, the time that the water stays in the vaporization chamber 238 will be shortened, resulting in poor vaporization efficiency of the water in the vaporization chamber 238, and water dripping may occur when the steam cleaning device is used. The gap between the annular blocking portion 233 and the tube body 22 can effectively increase the time that the water stays in the vaporization chamber 238, slow down the speed of the water flow, and reduce the occurrence of water dripping when the steam cleaning device is used.

[0044] In some embodiments, due to the change in voltage, the single-side distance of the gap between the annular blocking portion 233 and the tube body 22 can also be synchronously adjusted.

[0045] In one embodiment, a guide groove 235 is provided at one end of the guide rod 23, and a steam guide cavity 234 is provided at the other end of the guide rod 23. The guide groove 235 and the steam guide cavity 234 extend inward from the end surface of the guide rod 23; the water inlet 231 is connected to the guide groove 235, and the steam outlet 232 is connected to the steam guide cavity 234. When the guide rod 23 is installed in the tube body 22, the guide groove 235 can make the flow channel at the inlet end of the tube body 22 communicate with the internal flow channel of the tube body 22, and the steam guide cavity 234 can make the internal flow channel of the tube body 22 communicate with the flow channel at the outlet end of the tube body 22, so as to facilitate the inflow of water and the outflow of steam.

[0046] In one embodiment, the steam outlet 232 is arranged perpendicular to the guide rod 23. When the steam outlet 232 is arranged perpendicular to the guide rod 23, the gas in the vaporization chamber 238 can flow out from the steam outlet 232 in the shortest path, which is conducive to the release of steam. The steam outlet 232 can also be arranged obliquely on the guide rod 23. The specific arrangement of the steam outlet 232 can be selected according to the use requirements.

[0047] An embodiment of the present disclosure also provides a steam generator, such as Figure 3 As shown, the steam generator comprises:

[0048] Housing 21;

[0049] The tube body 22 is disposed in the shell 21, and a heating chamber is formed between the tube body 22 and the shell 21;

[0050] A heating body 24 is disposed in the heating chamber and is used to heat the water in the pipe body 22;

[0051] The heat-insulating layer is arranged between the heating chamber and the shell 21 and is used to keep the tube 22 and the heating body 24 warm;

[0052] The guide rod 23 in the above embodiment is installed in the tube body 22 .

[0053] The steam generator provided in the present disclosure adopts the guide rod 23 provided in the above embodiment, which can effectively solve the problem of water dripping when the steam generator generates steam.

[0054] In one embodiment, the steam generator 2 further includes rubber plugs 27 respectively disposed between the two ends of the tube body 22 and the shell 21, and the two ends of the tube body 22 are respectively supported on the corresponding rubber plugs 27. The rubber plugs 27 can play a role in installing the tube body 22, and can seal between the shell 21, the tube body 22 and the guide rod 23.

[0055] In one embodiment, the shell 21 includes a main body 211 which is sleeved on the radial outer side of the tube body 22 and a water inlet end cover 212 and a steam outlet end cover 213 which are respectively located at both ends of the main body 211. The main body 211 can be annular or rectangular; the rubber plug 27 is respectively arranged on the water inlet end cover 212 and the steam outlet end cover 213; the two ends of the guide rod 23 are respectively installed on the water inlet end cover 212 and the steam outlet end cover 213; the water inlet end cover 212 is provided with a water inlet channel 2121, and the steam outlet end cover 213 is provided with a steam outlet channel 2131.

[0056] Since the steam outlet passage 2131 of the steam outlet cover 213 ejects steam at a relatively high temperature, in one embodiment, a heat insulating component 25 is provided between the steam outlet cover 213 and the main body 211; the heat insulating component 25 may be made of mica material or ceramic material. The heat insulating component 25 blocks the path for the heat of the steam outlet cover 213 to be transferred to other parts of the shell 21. This prevents the heat of the steam outlet cover 213 from being transferred to other parts of the shell 21, thereby causing the temperature of the shell 21 to be relatively high, and also prevents the heat of the steam from being dissipated outward, thereby reducing the thermal efficiency of the steam generator 2.

[0057] In one embodiment, an opening 236 is provided on the guide rod 23 ; when the guide rod 23 is installed on the water inlet end cover 212 , it can be snapped onto the water inlet end cover 212 through the opening 236 to better fix the guide rod 23 .

[0058] In one embodiment, a through hole 2122 is provided on the water inlet end cover 212 to connect the flow channel to the outside of the tube body 22 ; the end surface opening of the guide groove 235 is connected to the through hole 2122 on the water inlet end cover 212 .

[0059] Specifically, a guide groove 235 is provided at one end of the guide rod 23 close to the inlet end of the tube body 22, and a steam guide chamber 234 is provided at one end close to the outlet end of the tube body 22. The guide groove 235 is connected to the through hole 2122 on the water inlet end cover 212. In this way, water entering from the water inlet channel 2121 of the steam generator 2 enters the vaporization chamber 238 through the through hole 2122 and the guide groove 235 on the water inlet end cover 212 at the inlet end in turn. The water in the vaporization chamber 238 is heated to become water vapor and then enters the steam guide chamber 234 through the steam outlet 232. The water vapor is then ejected from the steam outlet channel 2131.

[0060] An embodiment of the present disclosure also provides a steam cleaning device, such as Figure 4 , Figure 5 As shown, the steam cleaning equipment includes:

[0061] Ontology 1;

[0062] The steam generator 2 in the above embodiment is arranged on the body 1 and is used to heat water and output steam;

[0063] A water supply device 3, connected to the steam generator 2, comprising a water tank 31 and a water pump 32 for pumping water in the water tank 31 into the steam generator 2;

[0064] A control device, used to control the operation of the steam generator 2 and the water pump 32;

[0065] A battery pack mounting seat 5 is also provided on the main body 1 for connecting a battery pack 6, which provides power for the steam generator 2, the water pump 32 and the control device.

[0066] Optionally, the main body 1 is provided with a handle for holding, and a steam nozzle is provided at one end of the main body 1; the water tank 31 is provided at the other end of the main body 1 away from the steam nozzle, and the steam nozzle, the steam generator 2, and the water tank 31 are arranged in sequence; the battery pack mounting seat 5 is provided at the end of the handle away from the steam generator.

[0067] The steam cleaning device provided by the present disclosure adopts the steam generator 2 provided by the present disclosure. Since the steam generator 2 has high thermal efficiency and low energy loss, it can be beneficial to reduce the capacity of the battery pack, thereby reducing the weight of the entire steam cleaning device, or when using a set battery pack capacity, it can enhance the battery life of the device.

[0068] In some embodiments, the steam outlet 232 of the guide rod 23 is directed downward perpendicular to the steam outlet channel 2131 and is located above the guide rod 23. Due to gravity, both water and steam are located at a lower position of the cleaning device. Setting the steam outlet above the guide rod 23 is further conducive to increasing the time for water vaporization and improving the degree of liquid vaporization in the steam outlet channel 2131. The "above" here refers to the steam cleaning device in use relative to the ground.

[0069] The steam cleaning device disclosed herein may be a handheld steam cleaning device, or may be a device that uses steam to work, such as a steam mop.

[0070] In summary, the guide rod for a steam generator, the steam generator and the steam cleaning device provided by the present disclosure are configured such that the first cross-sectional area of ​​the steam outlet on the guide rod is set to 0.0225πmm 2 -0.25πmm 2 , which can increase the pressure in the vaporization chamber to improve the vaporization efficiency of water in the steam generator, and improve the atomization effect of the steam, prevent dripping when using the steam cleaning equipment, and improve the user experience.

[0071] It should be noted that the above describes some embodiments of the present disclosure. Other embodiments are within the scope of the appended claims.

[0072] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present disclosure (including the claims) is limited to these examples. This narrative style of the specification is only for the sake of clarity, and those skilled in the art should take the specification as a whole. Under the concept of the present disclosure, the above embodiments or the technical features in different embodiments may also be appropriately combined, and there are many other variations in different aspects of the embodiments of the present disclosure as described above, which are not provided in detail for the sake of simplicity.

[0073] The embodiments of the present disclosure are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and principles of the embodiments of the present disclosure shall be included in the scope of protection of the present disclosure.

Claims

1. A guide rod for a steam generator, the steam generator comprising a pipe body, characterized in that: The guide rod is arranged in the tube body, and a water inlet for water inlet and a steam outlet for steam outlet are arranged on the guide rod. A vaporization chamber is formed between the guide rod and the tube body, and the water inlet is communicated with the vaporization chamber, and the steam outlet is communicated with the vaporization chamber; the steam outlet has a preset first cross-sectional area to increase the pressure in the vaporization chamber; the first cross-sectional area is 0.0225πmm 2 -0.25πmm 2 between.

2. The guide rod for a steam generator according to claim 1, characterized in that: The first cross-sectional area is 0.0225πmm 2 -0.16πmm 2 between.

3. The guide rod for a steam generator according to claim 1, characterized in that: The diameter of the steam outlet is between 0.3 mm and 1 mm.

4. The guide rod for a steam generator according to claim 1, characterized in that: The guide rod comprises an annular blocking portion and a bare rod portion distributed in the axial direction, and the steam outlet is arranged on the bare rod portion; when the guide rod is installed in the tube body, a gap for water flow is formed between the annular blocking portion and the tube body.

5. The guide rod for a steam generator according to claim 4, characterized in that: The gap between the annular blocking portion and the tube body is between 0.1 mm and 0.5 mm on one side.

6. The guide rod for a steam generator according to claim 1, characterized in that: A guide groove is provided at one end of the guide rod, and a steam guide cavity is provided at the other end of the guide rod. The guide groove and the steam guide cavity extend inward from the end surface of the guide rod; the water inlet is connected to the guide groove, and the steam outlet is connected to the steam guide cavity.

7. A steam generator, characterized in that: The steam generator comprises: case; A tube body is arranged in the shell, and a heating chamber is formed between the tube body and the shell; A heating body, disposed in the heating chamber, for heating the water in the tube body; A heat-insulating layer, disposed between the heating chamber and the shell, for heat-insulating the tube body and the heating body; The guide rod according to any one of claims 1 to 6, wherein the guide rod is installed in the tube body.

8. The steam generator according to claim 7, characterized in that: The steam generator is powered by a 20V battery pack. When powered by the 20V battery pack, the power is between 150W and 400W.

9. The steam generator according to claim 7, characterized in that: The steam generator also includes rubber plugs respectively arranged between the two ends of the tube body and the shell, and the two ends of the tube body are respectively supported on the corresponding rubber plugs; the shell includes a main body sleeved on the radial outside of the tube body and a water inlet end cover and a steam outlet end cover respectively located at the two ends of the main body; the rubber plugs are respectively arranged on the water inlet end cover and the steam outlet end cover; the two ends of the guide rod are respectively installed on the water inlet end cover and the steam outlet end cover; the water inlet end cover is provided with a water inlet channel, and the steam outlet end cover is provided with a steam outlet channel.

10. A steam cleaning device, characterized in that: The steam cleaning device comprises: ontology; The steam generator according to any one of claims 7 to 9, arranged on the body, for heating water and outputting steam; a water supply device, connected to the steam generator, comprising a water tank and a water pump for pumping water in the water tank into the steam generator; A control device, used for controlling the operation of the steam generator and the water pump; Wherein, a battery pack mounting seat is also provided on the main body for connecting a battery pack, and the battery pack provides power for the steam generator, the water pump and the control device.

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