Air suction fan and air suction ironing device

Abstract

This utility model discloses a suction fan and a suction iron, belonging to the category of clothing ironing appliances. Existing iron fans expose their motors to airflow with high moisture content, resulting in short motor lifespans. This utility model defines an annular airflow channel by using an inner and outer ring wall extending axially. The motor is located at the second end of the annular airflow channel, avoiding the channel and its extension path. The impeller is connected to the first end of the rotating shaft and corresponds to the first end of the annular airflow channel, drawing airflow in from the first end and discharging it from the second end. Even when steam-containing airflow is drawn in from the first end and discharged from the second end of the annular airflow channel during operation, the motor is not exposed to airflow with high moisture content, thus preventing a reduction in lifespan. Instead, the motor is kept in a normal working environment, ensuring its lifespan. Furthermore, there is no need to wrap the motor with a waterproof sealing layer, which facilitates heat dissipation and extends the motor's lifespan.

Description

Technical Field

[0001] This utility model relates to clothing ironing appliances, specifically a suction fan and a suction iron. Background Technology

[0002] When using a garment steamer, the released steam can blow clothes away from the work surface, hindering the steam and the work surface from effectively ironing the clothes. Therefore, a solution has emerged that uses a fan to draw air towards the work surface during ironing. However, this suction process draws in steam, exposing the fan motor to a high-moisture airflow, which is detrimental to motor operation and reduces its lifespan. Furthermore, wrapping the motor with a waterproof sealing layer would impede heat dissipation. Utility Model Content

[0003] This invention addresses the shortcomings of existing irons that use a fan to draw clothing onto the work surface, resulting in a short motor lifespan due to the motor being exposed to airflow with high moisture content. It provides a suction fan and suction iron that combine waterproof and heat dissipation properties.

[0004] To achieve the above objectives, the suction fan of this utility model is characterized by comprising: An annular air duct, defined between an inner and outer annular wall extending axially; The motor is located at the second end of the annular air duct and avoids the annular air duct and its extended path; The impeller, which is connected to the first end of the rotating shaft and corresponds to the first end of the annular air duct, is used to draw airflow from the first end of the annular air duct and discharge it from the second end of the annular air duct when driven by the motor.

[0005] This design, by placing the motor at the second end of the annular air duct and avoiding the annular air duct and its extension path, ensures that even when steam-containing airflow is drawn in from the first end of the annular air duct and discharged from the second end, the motor is not exposed to airflow with high moisture content, thus preventing a reduction in its lifespan. Instead, the motor is kept in a normal operating environment, ensuring its lifespan. Furthermore, there is no need to wrap the motor with a waterproof sealing layer, which facilitates motor heat dissipation.

[0006] Preferably, the motor includes a stator, a rotor, and a shaft. The stator is fixedly configured to the inner ring wall, the rotor is located inside the stator and maintains a rotational clearance with the stator, the shaft is coaxially fixed to the rotor, and the impeller is connected to the first end of the shaft. This ensures that the motor drives the impeller smoothly at high speed.

[0007] Preferably, the motor is located axially outside the outer ring wall or overlaps with the outer ring wall, with the length of the overlap section being less than 20% of the axial length of the motor. This ensures the unobstructed flow of the annular air duct and prevents the motor from blocking the annular air duct.

[0008] Preferably, the first end of the inner ring wall and the first end of the rotating shaft are sealed with a sealing ring to isolate the inner space of the inner ring wall from the annular air duct. This prevents airflow from entering the inner space of the inner ring wall during operation of the suction fan, thus preventing adverse effects of steam on the motor.

[0009] Preferably, the motor is covered with an annular guide shield, the first end of which is sealed to the inner annular wall, defining the annular air duct and its extension path on the radially outer side of the annular guide shield. The extension path of the annular air duct is located on the radially outer side of the guide shield. Accordingly, the annular guide shield guides the airflow and isolates it from the motor, preventing the motor from operating in a humid environment.

[0010] Preferably, the annular air guide has a gradually increasing guide surface, the diameter of which gradually increases in the direction away from the annular air duct. This changes the direction of airflow, guiding it radially away from the motor.

[0011] Preferably, a heat dissipation gap is maintained between the annular guide shield and the motor. This heat dissipation gap facilitates motor heat dissipation and prevents the motor from being damaged due to excessively high operating temperature.

[0012] Preferably, one end of the inner ring wall has an extension section extending axially to the outside of the outer ring wall, and the motor is at least partially mounted within the extension section. This limits the radial dimension of the motor and ensures unobstructed flow in the annular air duct.

[0013] Preferably, the shaft is mounted within the inner ring wall via a bearing. This keeps the bearing away from the stator, preventing the heat generated during stator operation from adversely affecting the bearing.

[0014] Preferably, the impeller includes a hub and blades distributed radially around the hub, with the blades located inside the outer annular wall. During operation, the impeller rotates, and the blades cause the airflow to flow along the annular duct, preventing air leakage.

[0015] Preferably, the hub is cap-shaped and fits around the outer side of the first end of the inner ring wall while maintaining axial overlap with the inner ring wall. This structure maintains a meandering effect between the annular air duct and the internal space of the inner ring wall, extending the path of airflow in the annular air duct into the internal space of the inner ring wall, and reducing the amount of airflow generated by the suction fan entering the internal space of the inner ring wall.

[0016] Preferably, the first end of the inner ring wall is axially recessed into the first end of the outer ring wall. This substantially positions the entire impeller within the outer ring wall, increasing the impeller's ability to drive airflow.

[0017] Preferably, the inner and outer annular walls are connected as a single unit by guide vanes located within the annular air duct. The guide vanes are inclined to guide the airflow within the annular air duct. The guide vanes maintain the positional relationship between the inner and outer annular walls and guide the airflow generated by the impeller to flow smoothly through the annular air duct.

[0018] Preferably, a first sheath is fitted to the first end of the outer ring wall, and the first sheath defines the inlet of the annular air duct by a first folded edge. A second sheath is fitted to the second end of the outer ring wall, and the second sheath defines the outlet of the annular air duct by a second folded edge. The diameter of the impeller is larger than the diameter of the inlet. The inlet facilitates air intake by the impeller, and the outlet facilitates air exhaust by the annular air duct. Furthermore, the fitting of the first and second sheaths to the outer ring wall facilitates product assembly.

[0019] This utility model discloses a suction iron, comprising a working surface with steam holes and suction holes. The steam holes are used to release steam from a vaporization device. The suction iron includes a suction fan, with a first end of an annular air duct connected to the suction hole and a second end connected to the exhaust hole. When the suction fan is working, it draws in air through the suction hole and exhausts air through the exhaust hole. Accordingly, when ironing, the suction fan draws the clothing onto the working surface while releasing steam from the steam holes. Due to the structure of the suction fan, the steam drawn in during suction is prevented from adversely affecting the suction fan.

[0020] Preferably, the head housing has an air distribution chamber located on the back side of the working surface, and the first end of the annular air duct is connected to the suction port via the air distribution chamber. This ensures that each suction port can exert a consistent suction force on the clothing.

[0021] Preferably, the exhaust vent is tangential to the working surface. This avoids the exhaust air being directed towards the user, which could cause discomfort.

[0022] Preferably, the head shell has an exhaust duct, and the second end of the annular duct is connected to an exhaust hole via the exhaust duct. This ensures that all steam-containing airflow is discharged through the exhaust duct and exhaust hole, preventing it from stagnating inside the iron and creating a damp environment.

[0023] This invention defines an annular air duct by an inner and outer ring wall extending axially. The motor is located at the second end of the annular air duct, avoiding the annular air duct and its extension path. The impeller is connected to the first end of the rotating shaft and corresponds to the first end of the annular air duct, used to draw airflow in from the first end of the annular air duct and discharge it from the second end. Even when airflow containing steam is drawn in from the first end of the annular air duct and discharged from the second end, the motor is not exposed to airflow with high moisture content, thus preventing a reduction in its lifespan. Instead, the motor is kept in a normal working environment, ensuring its lifespan. Furthermore, there is no need to wrap the motor with a waterproof sealing layer, which facilitates motor heat dissipation and extends motor life. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of a suction fan according to an embodiment of the present invention; Figure 2 for Figure 1 A schematic diagram of the suction fan from another perspective; Figure 3 for Figure 1-2 A schematic diagram of an orthographic projection of the suction fan from one perspective; Figure 4 for Figure 3 Sectional view along line AA; Figure 5 for Figure 4 Enlarged cross-sectional view of BB direction; Figure 6 This is a schematic diagram of a suction fan according to another embodiment of the present invention; Figure 7 for Figure 1 The diagram shown is an exploded view of the suction fan. Figure 8 This is a schematic diagram of the suction iron of this utility model; Figure 9 for Figure 8 A schematic diagram of another perspective of the suction iron shown; Figure 10 for Figure 8-9 A schematic diagram of an orthographic projection of the suction iron shown from one perspective; Figure 11 for Figure 10 CC-direction sectional view; Figure 12 for Figure 8-9 A schematic diagram of another orientation of the suction iron shown; Figure 13 for Figure 12 Enlarged cross-sectional view along the DD direction; Explanation of the labels in the diagram: 10 Head shell, 11 Air distribution chamber, 12 Exhaust duct, 13 Exhaust hole; 20 Working face, 21 Steam hole, 22 Air suction hole; 30 suction fan 40 vaporization device; 100 Annular air duct, 110 Inner ring wall, 111 Extension section, 112 Sealing ring, 120 Outer ring wall, 130 Guide vane; 200 motor, 210 stator, 220 rotor, 230 shaft, 240 bearing, 250 isolation sleeve, 260 rotation clearance; 300 impeller, 310 hub, 320 blades; 400 annular shroud, 410 gradient airflow surface, 420 heat dissipation gap; 510 First sheath, 511 Inlet, 520 Second sheath, 521 Outlet. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0026] The terms “comprising” and “having”, and any variations thereof, in the specification and claims of this utility model are intended to cover non-exclusive inclusion, such as a method or product that includes a series of technical features, not limited to those technical features explicitly listed, but also including other technical features that may be included in the method or product but not explicitly listed.

[0027] In the description of this utility model, it should be understood that the terms "upper," "lower," "left," "right," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Among them, "upper" and "lower," "left" and "right," and "front" and "rear" are opposite directions.

[0028] In the description of this utility model, it should be understood that the technical features defined by terms such as "first" and "second" which have a sequential concept are only for the purpose of clearly describing the defined technical features and making the defined technical features clearly distinguishable from other technical features, and do not represent that they are named in this way in actual implementation. Therefore, they should not be construed as limitations on this utility model.

[0029] The present invention will now be described in detail with reference to specific embodiments and accompanying drawings.

[0030] Figure 1-5 , Figure 7 A suction fan 30 with a structure is shown, which includes an annular air duct 100, a motor 200 and an impeller 300.

[0031] The annular air duct 100 is defined between the inner annular wall 110 and the outer annular wall 120 extending axially (in the direction of the extension of the axis of rotation).

[0032] Motor 200 includes a stator 210, a rotor 220, and a shaft 230. The stator 210 is fixedly configured with the inner annular wall 110. The rotor 220 is located inside the stator 210 and maintains a rotational clearance 260 with the stator. The shaft 230 is coaxially fixed to the rotor 220. This motor 200 is located at the second end of the annular air duct 100. Figure 4 (As shown on the right) and avoids the annular air duct and its extension path. The extension path of the annular air duct is the direction in which the airflow continues to flow after exiting the annular air duct. Figure 4 In the diagram, the direction of airflow is indicated by dashed lines marked with arrows. Given the assembly structure of the motor and impeller, the goal is to ensure that the motor drives the impeller smoothly at high speed.

[0033] Impeller 300 is connected to the first end of shaft 230. Figure 4 (shown on the left end) and corresponding to the first end of the annular air duct 100 ( Figure 4 The left end (as shown) is used to draw air in from the first end of the annular duct and discharge it from the second end when driven by a motor. The airflow direction is... Figure 4 The dashed line marked with an arrow indicates the point.

[0034] This design, by placing the motor at the second end of the annular duct and avoiding the duct and its extension path, ensures that even when steam-containing airflow is drawn in from the first end of the annular duct and discharged from the second end, the motor is not exposed to airflow with high moisture content, thus preventing a reduction in its lifespan. Instead, the motor remains in a normal operating environment, extending its lifespan. Furthermore, it eliminates the need for a waterproof sealing layer around the motor, facilitating heat dissipation and extending the lifespan of both the motor and the fan.

[0035] like Figure 4 As shown, the motor 200 is axially located outside the outer ring wall 120 to ensure the unobstructed flow of the annular air duct and prevent the motor from blocking the annular air duct. In other embodiments, the motor maintains an overlap section with the outer ring wall in the axial direction, and the length of the overlap section is less than 20% of the axial length of the motor.

[0036] like Figure 4 As shown, the first end of the inner ring wall 110 ( Figure 4 The left end shown) and the first end of the rotating shaft 230 ( Figure 4 The left end (shown) is sealed by a sealing ring 112 to isolate the inner space of the inner ring wall from the annular air duct. This prevents airflow from entering the inner space of the inner ring wall during operation, thus preventing adverse effects of steam on the motor. As shown, the inner space of the inner ring wall 110 connects to the motor's rotation clearance 260; sealing it ensures the motor is not affected by humid steam.

[0037] In the illustrated mechanism, the motor 200 is encased in an annular guide shield 400, and the first end of the annular guide shield 400 ( Figure 4 The left end of the annular duct 100 is sealed to the inner ring wall 110, defining the annular air duct 100 and its extension path on the radially outer side of the annular guide shroud 400. Accordingly, the annular guide shroud guides the airflow and isolates the airflow from the motor, preventing the motor from being in a humid working environment.

[0038] In particular, the annular shroud 400 has a gradually increasing guide surface 410, the diameter of which gradually increases along the direction away from the annular air duct. Accordingly, the airflow direction can be changed, guiding the airflow radially away from the motor. Figure 1-4 In the middle, the annular fairing 400 is approximately cylindrical. And... Figure 6 In another embodiment shown, the gradient guide surface 410 presents as a distinct conical surface, which is more conducive to guiding the axially flowing airflow radially.

[0039] Furthermore, a heat dissipation gap 420 is maintained between the annular guide shroud 400 and the motor 200. This gap facilitates motor heat dissipation and prevents damage from excessively high operating temperatures. In contrast, due to Figure 6 The gradient guide surface shown is a conical surface, so the gap between the annular guide shroud and the stator is larger, which is more conducive to heat dissipation.

[0040] like Figure 4 As shown, the right end of the inner ring wall 110 has an extension 111 extending axially to the outside of the outer ring wall 120, and the motor 200 is at least partially mounted within the extension 111. This limits the radial dimension of the motor and ensures unobstructed flow in the annular air duct.

[0041] like Figure 4 , Figure 7 As shown, to ensure the rotation of the shaft and rotor, the shaft 230 is mounted within the inner ring wall 110 via bearings 240, keeping the bearings away from the stator and preventing the heat generated by the stator during operation from adversely affecting the bearings. In the illustrated structure, there are two bearings 240, and the two bearings 240 are separated by an isolation sleeve 250 fitted onto the shaft 230 to maintain a distance, providing good support for the shaft and preventing it from wobbling during rotation.

[0042] like Figure 4 , Figure 7 As shown, the impeller 300 includes a hub 310 and blades 320 distributed radially around the hub, with the blades 320 located inside the outer annular wall 120. During operation, the impeller rotates, and the blades cause the airflow to flow along the annular duct, preventing air leakage. In particular, the hub 310 is cap-shaped and fits over the outer side of the first end of the inner annular wall 110, maintaining axial overlap with the inner annular wall. This structure maintains a meandering effect between the annular duct and the internal space of the inner annular wall, extending the path of airflow in the annular duct into the internal space of the inner annular wall, and reducing the amount of airflow generated by the suction fan entering the internal space of the inner annular wall.

[0043] like Figure 4 As shown, the first end of the inner ring wall 110 is axially recessed into the first end of the outer ring wall 120. Accordingly, the entire impeller is essentially located within the outer ring wall, increasing the impeller's ability to drive the airflow.

[0044] like Figure 4 As shown, the inner annular wall 110 and the outer annular wall 120 are connected as a single unit by guide vanes 130 located within the annular air duct. The guide vanes are inclined to guide the airflow within the annular air duct. The guide vanes maintain the positional relationship between the inner and outer annular walls and guide the airflow generated by the impeller to flow smoothly through the annular air duct. The inclined shape of the guide vanes ensures that the extended surface of the guide vanes maintains an angle with the axis.

[0045] In the illustrated structure, a first sheath 510 is fitted to the first end of the outer ring wall 120. The first sheath 510 defines the inlet 511 of the annular air duct by a first folded edge. A second sheath 520 is fitted to the second end of the outer ring wall 120. The second sheath 520 defines the outlet 520 of the annular air duct by a second folded edge. The diameter of the impeller 300 is larger than the diameter of the inlet 511. The inlet facilitates impeller air intake, and the outlet facilitates annular air duct exhaust. Furthermore, by fitting the first and second sheaths to the outer ring wall, product assembly is facilitated, such as installing the impeller first and then installing the first and second sheaths.

[0046] Figure 8-13 A vacuum iron is shown, comprising a working surface 20 with steam holes 21 and suction holes 22 distributed thereon. The steam holes are used to release steam from a vaporization device 40. A first end of an annular air duct 100 of the vacuum iron is connected to the suction hole 22, and a second end of the annular air duct 100 is connected to the exhaust hole 13. When the vacuum iron is working, it draws in air from the suction holes and exhausts air from the exhaust holes. Figure 11 , Figure 13 The direction of airflow is indicated by dashed lines marked with arrows. Accordingly, when steam is released from the steam vents for ironing, the suction fan draws the clothing onto the work surface. The suction fan's structure prevents steam from being drawn in and causing adverse effects on the fan itself.

[0047] The illustrated vacuum iron is merely an example to show its shape; in other embodiments, it may be embodied in other shapes.

[0048] like Figure 11 As shown, the head housing 10 has an air distribution cavity 11 located on the back side of the working surface, and the first end of the annular air duct is connected to the suction hole 22 through the air distribution cavity 11. Accordingly, each suction hole can exert a consistent suction force on the clothing.

[0049] In particular, the exhaust vent 13 is tangential to the working surface 20. The tangential direction of the working surface is the direction in which the working surface extends. In the illustrated structure, the two exhaust vents are located on the left and right sides of the suction iron head housing, respectively, to avoid exhaust air being directed towards the user and causing discomfort.

[0050] In the illustrated structure, the head housing 10 has an exhaust channel 12, and the second end of the annular air duct 100 is connected to the exhaust hole 13 via the exhaust channel 12. Accordingly, all the airflow containing steam is discharged through the exhaust channel and the exhaust hole, preventing it from stagnating inside the iron and forming a humid environment.

[0051] The annular guide shroud 400 has a front end that is sealed to the inner ring wall 110 to prevent air leakage in the fan section, and a rear end that is sealed to the internal structure of the head housing 10 to keep the exhaust channel sealed and prevent air leakage into the head housing.

Claims

1. A suction fan, characterized by: include: An annular air duct (100) is defined between an inner annular wall (110) and an outer annular wall (120) extending axially; The motor (200) is located at the second end of the annular air duct (100) and avoids the annular air duct and its extended path; The impeller (300), whose first end corresponds to the annular duct (100), is used to draw airflow from the first end of the annular duct and discharge it from the second end of the annular duct when driven by a motor.

2. The suction fan according to claim 1, characterized in that: The motor (200) includes a stator (210), a rotor (220) and a shaft (230). The stator is fixedly configured with the inner ring wall, the rotor is located inside the stator and maintains a rotational clearance (260) with the stator, the shaft is coaxially fixed to the rotor, and the impeller (300) is connected to the first end of the shaft (230).

3. The suction fan according to claim 1, characterized in that: The motor (200) is located outside the outer ring wall (120) or overlaps with the outer ring wall (120) in the axial direction, and the length of the overlap is less than 20% of the axial length of the motor.

4. The suction fan according to claim 2, characterized in that: The first end of the inner ring wall (110) and the first end of the rotating shaft (230) are sealed by a sealing ring (112) to isolate the inner space of the inner ring wall (110) from the annular air duct (100).

5. The suction fan according to any one of claims 1-4, characterized in that: The motor (200) is covered with an annular shroud (400), the first end of which is sealed to the inner ring wall (110) and defines the annular air duct and its extension path on the radial outer side of the shroud (400).

6. The suction fan according to claim 5, characterized in that: The annular shroud (400) has a gradually increasing flow guide surface (410), the diameter of which gradually increases along the direction away from the annular air duct (100).

7. The suction fan according to claim 5, characterized in that: A heat dissipation gap (420) is maintained between the annular shroud (400) and the motor (200).

8. The suction fan according to any one of claims 1-4, characterized in that: The inner ring wall (110) has an extension (111) extending axially to the outer ring wall (120) at one end, and the motor (200) is at least partially mounted in the extension (111).

9. The suction fan according to claim 2, characterized in that: The rotating shaft (230) is assembled inside the inner ring wall (110) via the bearing (240).

10. The suction fan according to any one of claims 1-4, characterized in that: The impeller (300) includes a hub (310) and blades (320) distributed radially around the hub, with the blades (320) located inside the outer ring wall (120).

11. The suction fan according to claim 10, characterized in that: The hub (310) is cap-shaped and fits on the outside of the first end of the inner ring wall (110) while maintaining axial overlap with the inner ring wall (110).

12. The suction fan according to claim 10, characterized in that: The first end of the inner ring wall (110) is axially recessed into the first end of the outer ring wall (120).

13. The suction fan according to any one of claims 1-4, characterized in that: The inner ring wall (110) and the outer ring wall (120) are connected by a guide vane (130) located in the annular air duct (100). The guide vane (130) is inclined to guide the airflow in the annular air duct (100).

14. The suction fan according to any one of claims 1-4, characterized in that: The first end of the outer ring wall (120) is fitted with a first sheath (510), the first sheath (510) defines the inlet (511) of the annular air duct by a first folded edge, the second end of the outer ring wall (120) is fitted with a second sheath (520), the second sheath (520) defines the outlet (521) of the annular air duct by a second folded edge, and the diameter of the impeller (300) is larger than the diameter of the inlet (511).

15. A suction iron, comprising a working surface (20) having steam holes (21) and suction holes (22) distributed thereon, the steam holes being used to release steam from a vaporization device (40), characterized in that: The suction iron includes a suction fan (30) as described in any one of claims 1-14, wherein the first end of the annular air duct (100) is connected to a suction hole (22), and the second end of the annular air duct (100) is connected to an exhaust hole (13). When the suction fan is working, it draws air from the suction hole and exhausts air from the exhaust hole.

16. The suction iron according to claim 15, characterized in that: The head housing (10) has a uniform air chamber (11) located on the back side of the working surface (20), and the first end of the annular air duct (100) is connected to the air intake hole (22) through the uniform air chamber (11).

17. The suction iron according to claim 15 or 16, characterized in that: The exhaust vent (13) faces the tangential direction of the working face (20).

18. The suction iron according to claim 15 or 16, characterized in that: The head housing (10) has an exhaust channel (12), and the second end of the annular air duct (100) is connected to the exhaust hole (13) via the exhaust channel (12).

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