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KR-20260063266-A - Smart hair dryer with leakage current restriction function

KR20260063266AKR 20260063266 AKR20260063266 AKR 20260063266AKR-20260063266-A

Abstract

The present invention relates to a smart hair dryer equipped with a leakage current limiting function, wherein at least one of the parts in the hair dryer where leakage current occurs, namely the power switch, the motor, the airflow intensity adjustment switch, and the heating coil, is provided with a metal structure that limits the leakage current, thereby enabling the leakage current generated in the hair dryer to be limited so that it does not flow into the human body through the user's wet hands.

Inventors

  • 이호석

Assignees

  • (주)비젼테크

Dates

Publication Date
20260507
Application Date
20241030

Claims (7)

  1. A plug connected to an outlet of the power system and receiving commercial AC power; A transformer that transforms commercial AC power applied through a plug into rated AC power; A power switch for turning on or off the commercial AC power supplied to the transformer; A motor that rotates a rotating shaft by receiving rated AC power transformed by a transformer; A blower fan that is mounted on the rotating shaft of a motor and rotates, blowing air drawn in through an intake port and exhausting it through an exhaust port; A blower speed adjustment switch that adjusts the blower fan's blower speed by adjusting the rotational speed of the motor shaft; A heating coil that generates heat by receiving rated AC power transformed by a transformer and heats the air drawn in by a blower fan; A metal structure that limits leakage current leaking from at least one of a power switch, a motor, a blower intensity adjustment switch, and a heating coil; A smart hair dryer equipped with a leakage current limiting function.
  2. In Article 1, The metal structure: A first metal structure that limits leakage current by expanding the N-phase area of the power switch; A smart hair dryer equipped with a leakage current limiting function.
  3. In Article 1, The metal structure: A second metal structure that limits leakage current by expanding the N-phase area of the motor; A smart hair dryer equipped with a leakage current limiting function.
  4. In Article 1, The metal structure: A third metal structure that limits leakage current by expanding the N-phase area of the blower speed adjustment switch; A smart hair dryer equipped with a leakage current limiting function.
  5. In Article 1, The metal structure: A fourth metal structure that limits leakage current by expanding the N-phase area of the heating coil; A smart hair dryer equipped with a leakage current limiting function.
  6. In any one of paragraphs 1 to 5, The metal structure: A smart hair dryer equipped with a leakage current limiting function in the form of a flat metal plate.
  7. In any one of paragraphs 1 to 5, The metal structure: A smart hair dryer equipped with a leakage current limiting function, which is a metal tube with a closed or partially open shape.

Description

Smart hair dryer with leakage current restriction function The present invention relates to a hair dryer for drying hair, and in particular to a smart hair dryer equipped with a leakage current limiting function. A hair dryer is a small, handheld device used to dry hair in places such as homes, accommodations like hotels, and public baths or saunas. However, due to the structure of the hair dryer, it is difficult to waterproof as it uses a heating coil, posing a risk of electric shock to the human body. Korean Registered Patent No. 10-1285469 (published July 12, 2013) discloses an electromagnetic wave removal hair dryer including a grounding circuit that bypasses current leaking from a heating horn to ground. That is, this technology is a technology that removes leakage current by allowing the leakage current remaining in the heating horn to flow to ground (G). However, this technology had a problem in that when a user holds a hair dryer with wet hands, the leakage current from the hair dryer does not flow to ground (G) but forms a closed loop through the human body, and the leakage current from the hair dryer flows through the water into the human body, causing electric shock to the human body. FIG. 1 is a schematic diagram of a smart hair dryer equipped with a leakage current limiting function according to the present invention. FIG. 2 is a circuit diagram illustrating the configuration of an embodiment of a smart hair dryer equipped with a leakage current limiting function according to the present invention. FIG. 3 is a drawing illustrating a metal structure for limiting leakage current of a smart hair dryer equipped with a leakage current limiting function according to the present invention, implemented in the form of a metal plate. FIG. 4 is a drawing illustrating a metal structure for limiting leakage current of a smart hair dryer equipped with a leakage current limiting function according to the present invention, implemented in the form of a metal container. The foregoing and additional aspects are embodied through embodiments described with reference to the attached drawings. It is understood that the components of each embodiment may be combined in various ways within the embodiment or with components of other embodiments, unless otherwise stated or contradicted. Based on the principle that the inventor may appropriately define the concepts of terms to best describe his invention, the terms used in this specification and claims shall be interpreted in a meaning and concept consistent with the description or proposed technical idea. Blocks referred to as 'circuits' in this specification may be composed of hardware such as dedicated semiconductors, gate arrays, FPGAs, or parts thereof. One or more blocks may be implemented as a single piece of hardware. As another example, these blocks may be implemented in software as an information processing device in which a computing element executes program instructions stored in a memory element. Multiple blocks may be implemented as part of a program executed on the same computing element. As another example, these blocks may be implemented in a hybrid form where part of the individual circuit is hardware and part is software. Additionally, in the software implementation, the computational elements may include digital signal processors, dedicated computational processors, artificial intelligence processing engines, dedicated AI processors, and graphics processors, or a combination thereof to the extent possible. Hereinafter, the present invention will be described in detail through preferred embodiments described with reference to the attached drawings so that those skilled in the art can easily understand and reproduce it. Although specific embodiments are illustrated in the drawings and detailed descriptions are provided, this is not intended to limit the various embodiments of the present invention to a specific form. In describing the present invention, if it is determined that a detailed description of related known functions or configurations could unnecessarily obscure the essence of the embodiments of the present invention, such detailed description will be omitted. When it is stated that one component is "connected" or "joined" to another component, it should be understood that while it may be directly connected or joined to that other component, there may also be other components in between. On the other hand, when it is stated that one component is "directly connected" or "directly coupled" to another component, it should be understood that no other component exists in between. FIG. 1 is a schematic diagram of a smart hair dryer equipped with a leakage current limiting function according to the present invention, and FIG. 2 is a circuit diagram illustrating the configuration of an embodiment of a smart hair dryer equipped with a leakage current limiting function according to the present invention. As illustrated in FIGS. 1 and 2, a smart hair drye