JP4659913B1 - Hot air heater for vehicles - Google Patents

Abstract

An object of the present invention is to provide a warm air heater for a vehicle that uses an electromagnetic induction heating means and has little influence on the human body of an electromagnetic field.
In the warm air heater for a vehicle according to the present invention, in the warm air heater body for a vehicle, a magnetic shield 3 made of a conductive wire mesh is provided at the outlet of the warm air generating chamber 1 of a heat-resistant cylindrical body containing a highly permeable material. A toroidal coil 7 spirally wound in an annular cylindrical insulating cylinder 6 is provided on the inner surface of the hot air generating chamber 1, and the insulating cylindrical body 6 is provided inside the toroidal coil 7 with the insulating cylinder 6. A magnetic cylinder 8 made of a hollow cylindrical magnetic metal material provided in a non-contact state with the toroidal coil 7 is provided, and a large number of metal heat sinks 4 capable of wind deformation are generated on the magnetic cylinder 8 to generate the hot air. It is fixed so as to surround the air outlet of the indoor portion 1.
[Selection] Figure 3

Description

  The present invention relates to a warm air heater for a vehicle heated by a heater using electromagnetic induction heating means.

2. Description of the Related Art Conventionally, there is known a combustion heater that performs heating using fuel stored in a fuel tank in order to heat a passenger compartment such as a long-distance truck (see Patent Document 1).
In this known technique, fuel injected by an injector adheres to a vaporization plate, is mixed with air supplied by an air pump, is ignited by an ignition glow plug, forms a flame, and an outer periphery of a combustion cylinder provided around the flame Is a combustion type heater in which a casing is provided and a housing is provided outside the casing, and a heat medium flows between the casing and the housing to exchange heat with the amount of combustion gas generated by the flame. .
In this combustion type heater, a heat medium that has absorbed heat is supplied to a hot water heater mounted on the vehicle and is further converted into hot air, so that it lacks immediate warmth as a vehicle interior heating device, and It could not be used for electric vehicles.

In addition, a magnetic induction heating means is employed as a heat source heating means, and a magnetic induction heating heater is provided in the hot air generation chamber to heat the air of the hair dryer. reference).
This known technique incorporates a heat source, which is formed of a coil wound around an insulating inner cylinder, and a magnetic metal material cylinder inserted into the insulating inner cylinder and in a non-contact state with the coil, into the body of the hair dryer. , A hair dryer that connects a source of a high-frequency alternating magnetic field to the coil to flow a high-frequency current.
In this hair dryer, the heat source of the hair dryer main body is constituted by electromagnetic induction heating means, so that the structure of the heat source is simplified and the temperature distribution of the magnetic metal body to be heated is uniform throughout. However, the influence of the generated electromagnetic field on the human body has not been considered.

JP-A-7-223426 JP 2007-190319 A

  It is an object of the present invention to provide a vehicle warm air heater that uses electromagnetic induction heating means and has little influence on the human body of an electromagnetic field.

The vehicle warm air heater according to the present invention is provided with a magnetic shield of a conductive wire mesh at the outlet of the hot air generating chamber of the heat-resistant cylindrical body containing the highly magnetic permeable material, and an annular tube is provided on the inner surface of the hot air generating chamber. A hollow cylindrical magnetic metal material magnetic cylinder provided with a toroidal coil spirally wound in a cylindrical insulating cylinder, and provided in a non-contact state with the toroidal coil by the insulating cylinder inside the toroidal coil And a magnetic pyramid-shaped metal heat sink composed of a number of trapezoidal trapezoidal trapezoidal wind deformable plates surrounding the air outlet in the hot air generating chamber. It is fixed to.

The vehicle warm air heater according to the present invention is provided with a magnetic shield of a conductive wire mesh at the outlet of the hot air generating chamber of the heat-resistant cylindrical body containing the highly magnetic permeable material, and an annular tube is provided on the inner surface of the hot air generating chamber. A hollow cylindrical magnetic metal material magnetic cylinder provided with a toroidal coil spirally wound in a cylindrical insulating cylinder, and provided in a non-contact state with the toroidal coil by the insulating cylinder inside the toroidal coil And a magnetic pyramid-shaped metal heat sink composed of a number of trapezoidal trapezoidal trapezoidal wind deformable plates surrounding the air outlet in the hot air generating chamber. Therefore, the temperature distribution of the heat radiating plate to be heated is made uniform by the deflection of the heat radiating plate by the wind force , and the influence of the generated electromagnetic field on the human body is less due to the magnetic shield. effective.

It is an external appearance perspective view of Example 1 of the warm air generation chamber of the warm air heater for vehicles of the present invention. It is an external appearance perspective view of Example 1 of the warm air generation chamber shown except a magnetic shield. It is sectional drawing of Example 1 of the warm air generation chamber of the warm air heater for vehicles of this invention. It is operation | movement explanatory drawing of Example 1 of the warm air generation chamber of the warm air heater for vehicles of this invention. It is sectional drawing of Example 2 of the warm air generation chamber of the warm air heater for vehicles of this invention. It is operation | movement explanatory drawing of Example 2 of the warm air generation chamber of the warm air heater for vehicles of this invention. It is an external appearance perspective view of Example 3 of the warm air generation chamber shown except a magnetic shield. It is sectional drawing of Example 3 of the warm air generation chamber of the warm air heater for vehicles of this invention. It is operation | movement explanatory drawing of Example 3 of the warm air generation chamber of the warm air heater for vehicles of this invention.

An embodiment of a warm air heater for a vehicle according to the present invention will be described below with reference to the accompanying drawings.
The vehicle warm air heater according to the present invention has a heat source in a hot air generation chamber, and has a built-in motor that drives a fan and a fan by a power source (not shown), and serves as a heat source for the hot air generation chamber of the vehicle hot air heater body. It uses electromagnetic induction heating means.
Since the heat source of the hot air generating chamber is formed by a toroidal coil and a magnetic cylindrical body made of a hollow cylindrical magnetic metallic material, the magnetic cylindrical body of the magnetic metallic material itself generates heat, so that air heating is quick. It can be heated effectively.

As shown in the external view of FIG. 1, a conductive wire netting magnetic shield 3 is provided at the outlet 2 of the hot air generating chamber 1 of the heat-resistant cylindrical body containing the highly permeable material, and the magnetic shield 3 is excluded. As shown in the perspective view of the appearance of the hot air generating chamber 1 in FIG. A metal heat sink 4 is fixed so as to surround the air outlet 2. In addition, when the said heat sink 4 is made into the fixed type which does not bend (bend), since the front-end | tip is trapezoid shape, the ventilation opening 5 is formed.
As shown in the cross-sectional view of FIG. 3, a toroidal coil 7 spirally wound in an annular cylindrical insulating cylinder 6 is provided on the inner surface of the hot air generating chamber 1, and inside the toroidal coil 7. The insulating cylinder 6 is provided with a magnetic cylinder 8 of a hollow cylindrical magnetic metal material provided in a non-contact state with the toroidal coil 7, and the heat radiating plate 4 is provided on the magnetic cylinder 8 as described above. It is fixed so as to surround the air outlet 2.

Next, the operation of the first embodiment will be described based on the attached drawings.
When the power is turned on, when a high-frequency current flows through the toroidal coil 7 shown in FIG. 3 to generate an alternating magnetic field, an eddy current is generated in the magnetic cylindrical body 8 by the alternating magnetic field, and the magnetism is generated by Joule heat generated by the eddy current. The cylindrical body 8 generates heat, and the air existing in the hot air generation chamber 1 can be heated.
When a motor (not shown) that drives the fan is driven by the blower switch, the fan (not shown) rotates and starts blowing air into the hot air generating chamber 1.
At this time, the heat radiating plate 4 is also heated by the magnetic cylindrical body 8, and the heat radiating plate 4 is bent by the wind force of the fan (not shown) as shown in the operation explanatory diagram of FIG. As shown, uniform hot air is blown out from the air outlet 2.
Moreover, since the magnetic shield 3 of the conductive wire mesh is provided in the blower outlet 2, the generated electromagnetic field is shielded.

The heat sink 4 of FIG. 2 is modified, and as shown in the cross-sectional view of FIG. 5, a part of a trapezoidal trapezoidal shape with a pointed tip toward the center is cut in the hot air generating chamber 1 so that the wind can be deformed. A large number of metal heat radiating plates 4 which are formed with fins 9 are fixed so as to surround the air outlet 2. A ventilation opening 5 is formed at the tip of the heat radiating plate 4.
In the same manner as described above, a toroidal coil 7 spirally wound in an annular cylindrical insulating cylinder 6 is provided on the inner surface of the hot air generating chamber 1, and the insulating cylindrical body 6 is provided inside the toroidal coil 7. Is provided with a hollow cylindrical magnetic metal material 8 provided in a non-contact manner with the toroidal coil 7, and the heat radiating plate 4 surrounds the outlet 2 as described above. To be fixed.

Next, the operation of the second embodiment will be described based on the attached drawings.
When the power is turned on, when a high-frequency current flows through the toroidal coil 7 shown in FIG. 5 to generate an alternating magnetic field, an eddy current is generated in the magnetic cylindrical body 8 by the alternating magnetic field, and the magnetism is generated by Joule heat generated by the eddy current. The cylindrical body 8 generates heat, and the air existing in the hot air generation chamber 1 can be heated.
When a motor (not shown) that drives the fan is driven by the blow switch, the fan (not shown) rotates and starts blowing air into the hot air generating chamber 1.
At that time, the fins 9 of the heat radiating plate 4 are also heated by the magnetic cylindrical body 8, and the fins 9 are bent as shown in the operation explanatory diagram of FIG. 6 by the wind force of the fan (not shown). Uniform warm air is blown out from the outlet 2 as indicated by the arrow.
Moreover, since the magnetic shield 3 of the conductive wire mesh is provided in the blower outlet 2, the generated electromagnetic field is shielded.

As shown in the external perspective view of the hot air generating chamber 1 except for the magnetic shield 3 in FIG. 7, the hot air generating chamber 1 can be deformed by wind force and the central portion is fixed and radially spreads outward. A large number of trapezoidal heat sinks 10 are fixed so as to surround the air outlet 2.
As shown in the sectional view of FIG. 8, a toroidal coil 7 spirally wound in an annular cylindrical insulating cylinder 6 is provided on the inner surface of the hot air generating chamber 1, and inside the toroidal coil 7. A magnetic cylinder 8 made of a hollow cylindrical magnetic metal material provided in a non-contact state with the toroidal coil 7 by the insulating cylinder 6 is provided, and the magnetic cylinder 8 supports the central portion of the heat sink 10. A support rod 11 is provided on the magnetic cylindrical body 8.

Next, the operation of the third embodiment will be described based on the attached drawings.
When the power is turned on, when a high frequency current flows through the toroidal coil 7 shown in FIG. 8 to generate an alternating magnetic field, an eddy current is generated in the magnetic cylindrical body 8 by the alternating magnetic field, and the magnetic field is generated by Joule heat generated by the eddy current. The cylindrical body 8 generates heat, and the air existing in the hot air generation chamber 1 can be heated.
When a motor (not shown) that drives the fan is driven by the blow switch, the fan (not shown) rotates and starts blowing air into the hot air generating chamber 1.
At that time, the heat radiating plate 10 is also heated by the magnetic cylindrical body 8, and the heat radiating plate 10 is bent by the arrow as shown in the operation explanatory diagram of FIG. 9 by the wind force of the fan (not shown). As shown, uniform hot air is blown out from the air outlet 2.
Moreover, since the magnetic shield 3 of the conductive wire mesh is provided in the blower outlet 2, the generated electromagnetic field is shielded.

DESCRIPTION OF SYMBOLS 1 Warm air generation chamber 2 Air outlet 3 Magnetic shield 4 Heat sink 5 Ventilation opening 6 Insulating cylinder 7 Toroidal coil 8 Magnetic cylinder 9 Fin 10 Heat sink 11 Support rod

Claims (2)

A conductive wire mesh magnetic shield is provided at the outlet of the hot air generating chamber of the heat-resistant cylindrical body containing the highly magnetically permeable material, and spirally wound around the inner surface of the hot air generating chamber inside an annular cylindrical insulating cylinder. A magnetic cylindrical body of a hollow cylindrical magnetic metal material provided in a non-contact state with the toroidal coil by the insulating cylindrical body is provided inside the toroidal coil. A vehicle characterized in that a large number of polygonal pyramid-shaped metal heat-dissipating plates having a pointed trapezoidal shape toward the center are deformable so as to surround an air outlet in the warm air generating chamber. Hot air heater. The heat radiating plate is formed by a plurality of wind-deformable polygonal pyramid-shaped metal heat radiating plates in which fins are formed by cutting out a part of a pointed trapezoidal shape toward the center so as to surround the air outlet. The warm air heater for a vehicle according to claim 1, wherein the heater is fixed.

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