A negative pressure steam iron
By using a fan to generate negative and positive pressure, the design solves the problems of low reliability of water pumps and poor ironing effect in traditional steam irons. It achieves efficient ironing and water supply without the need for a water pump, improving ironing efficiency and iron reliability, and extending service life.
Patent Information
- Application Number
- CN202522425146.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-15
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-11-15
AI Technical Summary
Traditional steam irons have unreliable water pumps, resulting in poor ironing performance. They are also prone to damage, especially in areas with poor water quality. Furthermore, when hanging clothes to iron, it is difficult for them to adhere tightly to the ironing board, affecting ironing efficiency and effectiveness.
It uses a fan to generate negative pressure to absorb clothes and uses positive pressure to supply water, eliminating the need for a traditional water pump. The design of the steam nozzle and air inlet ensures that the clothes fit tightly against the ironing board, and the positive pressure of the fan enables automatic water supply.
It improves ironing efficiency and results, reduces failure rate, extends service life, has a compact structure, is easy to operate, and enhances user experience.
Smart Images
Figure CN224930849U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of ironing technology, and in particular to a negative pressure steam iron. Background Technology
[0002] Irons are common household appliances, primarily used to remove wrinkles from clothing, making it smooth and neat. Traditional steam irons typically use a water pump to deliver water from a tank to an electrically heated steam generator. The generator heats the water to produce high-temperature steam, which is then sprayed onto the surface of the clothing through nozzles. The high temperature and humidity soften the clothing fibers, and the pressure from the ironing board further smooths the garment. However, this traditional steam iron design has the following technical drawbacks: 1. Low water pump reliability: The water pump is one of the core components of a steam iron, responsible for transporting water from the water tank to the steam generator. Because the water pump needs to be started and stopped frequently and operates under high load for extended periods, it is prone to wear and damage, causing the steam iron to malfunction and affecting its lifespan. This is especially true in areas with poor water quality, where the water pump is more likely to fail due to limescale and other problems.
[0003] 2. Poor steam ironing results: When using a steam iron, the airflow from the steam jet pushes the clothes away from the iron, making it difficult for the clothes to adhere tightly to the ironing board. This not only reduces ironing efficiency but also significantly diminishes the ironing effect, making it difficult to achieve the desired smoothness. This problem is especially pronounced for some thin fabrics.
[0004] Therefore, it is necessary to further improve and perfect the existing technology to overcome these shortcomings, and this utility model is made based on this situation. Utility Model Content
[0005] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a negative pressure steam iron that does not require a water pump and improves ironing efficiency and ironing effect.
[0006] This utility model is achieved through the following technical solution: To solve the above-mentioned technical problems, this utility model provides a negative pressure steam iron, including a shell and a water tank. The shell is equipped with a steam generator and a fan. The front end of the shell is equipped with an ironing board. The ironing board is equipped with a plurality of steam nozzles and air inlets. The steam nozzles are connected to the output end of the steam generator. The air inlets are connected to the air inlet side of the fan. The input end of the steam generator is equipped with a water pipe connected to the water tank. The air outlet side of the fan is equipped with an air pipe connected to the water tank. When the fan is working, it draws air in through the air inlet, creating a negative pressure at the air inlet of the ironing board, and sends some of the gas through the air pipe to the top of the water tank, creating a positive pressure inside the water tank.
[0007] To further address the technical problems to be solved by this utility model, this utility model provides a negative pressure steam iron in which the steam nozzle is located in the central area of the ironing board, and the air inlet is located in the peripheral area of the ironing board, surrounding the steam nozzle.
[0008] To further address the technical problems to be solved by this utility model, this utility model provides a negative pressure steam iron in which the lower end of the water pipe extends to the bottom of the water tank, and the lower end of the steam pipe extends to the top of the water tank.
[0009] In order to further solve the technical problem to be solved by this utility model, the negative pressure steam iron provided by this utility model also has an exhaust hole on the air outlet side of the fan.
[0010] In order to further solve the technical problem to be solved by this utility model, in the negative pressure steam iron provided by this utility model, the air outlet side of the fan is provided with a baffle plate facing the fan, the upper end of the exhaust hole and the air pipe are both set on the side wall of the shell, and the upper end of the air pipe is closer to the baffle plate.
[0011] In order to further solve the technical problem to be solved by this utility model, the present utility model provides a negative pressure steam iron in which the bottom of the shell is provided with a handle, the water tank is connected to the lower end of the handle, and the water pipe and the air pipe pass through the inner cavity of the handle and extend into the water tank.
[0012] In order to further solve the technical problem to be solved by this utility model, the water tank of this utility model is a sealed box with a water inlet on the top and a sealing plug at the water inlet.
[0013] To further solve the technical problem to be solved by this utility model, this utility model provides a negative pressure steam iron in which the shell includes a front cover and an inner shell disposed behind the front cover, the steam generator is disposed in the front cover, the inner cavity of the front cover and the inner cavity of the inner shell are connected to form an air duct, and the fan is disposed in the inner shell.
[0014] In order to further solve the technical problems to be solved by this utility model, the present utility model provides a negative pressure steam iron in which the inner shell is covered by an outer shell, and a gap is provided between the inner shell and the outer shell.
[0015] Compared with the prior art, the present invention has the following advantages: This utility model of a negative pressure steam iron uses a fan to generate negative pressure that adsorbs clothing, overcoming the repulsive effect of the steam jet airflow. This allows the clothing to adhere tightly to the ironing board, and the positive pressure generated by the fan assists in the water supply to the steam generator, eliminating the need for a traditional water pump. This design has the following significant advantages: it improves ironing efficiency and results, especially when hanging ironing; it avoids easily damaged parts such as water pumps, reducing the failure rate and improving the overall reliability and lifespan of the iron; and its compact structure and simple operation enhance the user experience. Attached Figure Description
[0016] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, wherein: Figure 1 This is an exploded view of the present invention; Figure 2 This is a cross-sectional view of the present invention; Figure 3 yes Figure 2 Sectional view at point AA. Detailed Implementation
[0017] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0018] like Figures 1 to 3 As shown, the negative pressure steam iron in this embodiment mainly consists of a shell 1 and a water tank 2. A steam generator 3 and a fan 4 are installed inside the shell 1. The steam generator 3 generates high-temperature steam, and the fan 4 generates negative pressure and assists in water pumping. In this embodiment, the steam generator 3 is preferably an electrically heated steam generator, which has the advantages of fast heating speed, precise temperature control, and ease of use; the fan 4 is preferably a high-speed fan to provide sufficient airflow and pressure.
[0019] An ironing board 5 is connected to the front end of the housing 1. The ironing board 5 is the component that directly contacts and irons the clothing. To achieve the dual effects of negative pressure ironing and steam ironing, the ironing board 5 is provided with several steam nozzles 51 and air inlets 52. The steam nozzles 51 are connected to the output end of the steam generator 3 to spray the high-temperature steam generated by the steam generator 3 onto the surface of the clothing. The air inlets 52 are connected to the air intake side of the fan 4 to draw in air, thereby creating a negative pressure area on the surface of the ironing board 5.
[0020] To supply water to the steam generator 3, in this embodiment, the input end of the steam generator 3 is equipped with a water pipe 6, the other end of which is connected to the bottom of the water tank 2. The water tank 2 is used to store ironing water. An air pipe 7 is provided on the outlet side of the blower 4, the other end of which is connected to the top of the water tank 2. When the blower 4 operates, some gas is introduced into the top of the water tank 2, creating positive pressure within the water tank 2. This positive pressure forces water from the water tank 2 into the water pipe 6, thereby providing water to the steam generator 3 and completing the water supply process.
[0021] The key to this invention lies in utilizing the negative and positive pressures generated by the fan 4 to achieve ironing and water supply. Specifically, when the fan 4 is started, on the one hand, air is drawn in through the air inlet 52, forming a negative pressure area on the surface of the ironing board 5. This negative pressure area can effectively attract clothing, overcoming the repulsive effect of the steam jet on the clothing, allowing the clothing to adhere tightly to the ironing board 5, thereby improving ironing efficiency and effect, especially when hanging ironing, the effect is more significant. On the other hand, the fan 4 introduces some gas through the air pipe 7 into the top of the water tank 2, forming a positive pressure in the water tank 2. This positive pressure is used to force water into the steam generator 3, achieving automatic water supply without the need for a water pump.
[0022] Because this invention uses a high-speed fan for water supply, there is no need for a traditional water pump, thus avoiding easily damaged parts such as water pumps. Furthermore, the high-speed fan has low requirements for water quality, eliminating the impact of limescale, thereby reducing the failure rate and improving the overall reliability and service life of the iron.
[0023] To further improve the ironing effect, such as Figure 1 , Figure 2 As shown, the steam nozzle 51 is preferably located in the central area of the ironing board 5, while the air inlet 52 is located in the peripheral area of the ironing board 5, surrounding the steam nozzle 51. This arrangement allows the steam to act more concentratedly on the center of the garment, while the negative pressure area can better absorb the edges of the garment, achieving a more even and thorough ironing effect.
[0024] To ensure stable pressure within the water tank and to better utilize air pressure, such as Figure 1 As shown, the lower end of the water pipe 6 extends to the bottom of the water tank 2 to draw water from the bottom of the water tank, and the lower end of the air pipe 7 extends to the top of the water tank 2 to utilize air pressure.
[0025] To regulate the pressure inside water tank 2 and prevent it from becoming too high or too low, such as Figure 2 and Figure 3 As shown, the blower 4 is also equipped with an exhaust port 11 on its outlet side. A portion of the gas can be released through the exhaust port 11, thereby controlling the pressure inside the water tank 2 within a suitable range.
[0026] To better guide airflow and improve the accuracy of air pressure control, such as Figure 2and Figure 3 As shown, a baffle plate 12 is provided on the air outlet side of the fan 4, directly facing the fan 4. The baffle plate 12 can effectively block and guide the airflow discharged from the fan 4, causing part of it to enter the air pipe 7 and part to be discharged through the exhaust port 11. The upper ends of both the exhaust port 11 and the air pipe 7 are located on the side wall of the housing 1, and the upper end of the air pipe 7 is closer to the baffle plate 12 than the exhaust port 11. This design allows more airflow to enter the air pipe 7, thereby increasing the positive pressure inside the water tank 2.
[0027] To facilitate user grip and operation, such as Figure 1 , Figure 2 As shown, the bottom of the housing 1 has a handle 8, and the water tank 2 is connected to the lower end of the handle 8. The water pipe 6 and the air pipe 7 pass through the inner cavity of the handle 8 and extend into the water tank 2. This design makes the overall structure of the iron more compact and its appearance more aesthetically pleasing.
[0028] To prevent water or air leaks from the water tank, such as Figure 2 As shown, water tank 2 is a sealed tank with a water inlet 21 on its top and a sealing plug 22 at the water inlet 21. The sealing plug 22 can effectively prevent water or air leakage from the water tank.
[0029] To improve the heat insulation performance and aesthetics of irons, such as Figure 3 As shown, the housing 1 includes a front cover 1a, an inner shell 1b, and an outer shell 1c. A steam generator 3 is housed in the front cover 1a, and the inner cavity of the front cover 1a and the inner cavity of the inner shell 1b communicate to form an air duct. A fan 4 is located in the inner shell 1b. The inner shell 1b is covered by the outer shell 1c, with a gap between them. Due to the double-layered housing structure, an exhaust port 11 is located on the side wall of the inner shell 1b, and an air outlet 1c1 is located on the outer shell 1c at the corresponding position. This design effectively isolates the high temperature generated by the steam generator 3, preventing burns to the user, and also improves the overall aesthetics of the iron.
Claims
1. A negative pressure steam iron, characterized in that: The device includes a housing (1) and a water tank (2). The housing (1) is equipped with a steam generator (3) and a fan (4). The front end of the housing (1) is equipped with an ironing board (5). The ironing board (5) is equipped with several steam nozzles (51) and air inlets (52). The steam nozzles (51) are connected to the output end of the steam generator (3). The air inlets (52) are connected to the air inlet side of the fan (4). The input end of the steam generator (3) is equipped with a water pipe (6) connected to the water tank (2). The air outlet side of the fan (4) is equipped with an air pipe (7) connected to the water tank (2). When the fan (4) is working, it draws air from the air inlet (52), creates a negative pressure at the air inlet (52) of the ironing board (5), and sends some gas through the air pipe (7) to the top of the water tank (2), creating a positive pressure inside the water tank (2).
2. The negative pressure steam iron according to claim 1, characterized in that: The steam nozzle (51) is located in the central area of the ironing board (5), and the air inlet (52) is located in the peripheral area of the ironing board (5) and surrounds the steam nozzle (51).
3. A negative pressure steam iron according to claim 1, characterized in that: The lower end of the water pipe (6) extends to the bottom of the water tank (2), and the lower end of the air pipe (7) extends to the top of the water tank (2).
4. A negative pressure steam iron according to claim 1, characterized in that: The fan (4) is also provided with an exhaust port (11) on the air outlet side.
5. A negative pressure steam iron according to claim 4, characterized in that: The blower (4) has a baffle plate (12) facing the blower (4) on the air outlet side. The upper ends of the exhaust hole (11) and the air pipe (7) are both located on the side wall of the housing (1), and the upper end of the air pipe (7) is closer to the baffle plate (12).
6. A negative pressure steam iron according to claim 1, characterized in that: The bottom of the housing (1) is provided with a handle (8), the water tank (2) is connected to the lower end of the handle (8), and the water pipe (6) and air pipe (7) pass through the inner cavity of the handle (8) and extend into the water tank (2).
7. A negative pressure steam iron according to claim 1, characterized in that: The water tank (2) is a sealed tank with a water inlet (21) on the top and a sealing plug (22) at the water inlet (21).
8. A negative pressure steam iron according to claim 1, characterized in that: The housing (1) includes a front cover (1a) and an inner shell (1b) located behind the front cover (1a). The steam generator (3) is located in the front cover (1a). The inner cavity of the front cover (1a) and the inner cavity of the inner shell (1b) are connected to form an air duct. The fan (4) is located in the inner shell (1b).
9. A negative pressure steam iron according to claim 8, characterized in that: The inner shell (1b) is covered by an outer shell (1c), and a gap is provided between the inner shell (1b) and the outer shell (1c).