JPS5981885A - Heat generating plate - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Field of Technology t'F7] This invention provides, for example, a cylindrical body having an air outlet, and a heat generating plate having a positive resistance-temperature characteristic on a cross section cutting the inner periphery of the cylindrical body; The present invention relates to a heat generating device comprising a blower provided on the opposite side of the air outlet with respect to the heat generating plate, and more specifically to a heat generating plate useful for hair dryers, hot air heaters, futon dryers, etc.

[Background technology]

Conventionally, heat-generating plates are made by providing a large number of air channels on a substrate made of barium titanate, which has positive resistance-temperature characteristics, for example.
It is used to construct a heat generating device such as the one described above, and is evaluated for its safety and ability to obtain hot air at a constant temperature regardless of the amount of air flow. However, this heat generating plate has a problem in that it has a low thermal conductivity, making it difficult to continuously obtain hot air at a high temperature.

[Purpose of the invention]

This invention was made in view of the above facts, and it is possible to pump the heat generated in a substrate with low thermal conductivity to the surface of the substrate, increase the number of air buttons in contact with it, heat it, and obtain high-temperature hot air. The purpose is to provide a heat generating plate that can

[Disclosure of the invention]

The present invention provides a heat generating plate characterized in that a large number of air channels are formed on a substrate having positive resistance-temperature characteristics, and a porous layer made of gold R fibers is formed on the leeward side of the substrate. It is something. The present invention will be explained below based on the drawings shown as one embodiment.

In FIGS. 1 and 2, l represents a substrate 1 having a positive resistance-temperature characteristic, and a number of air flow channels 2 are formed in this substrate l. As the substrate 1, a ceramic semiconductor such as barium titanate is used. The hole shape of the flow path 2 is arbitrary and may be either a circular hole or a square hole. This board 1 has
Porous layer 3 made of metal fibers on the leeward side where air flows
is formed, and the air that has passed through the flow path 2 further passes through the pores of this porous layer 3. This heating plate is provided with electrodes, which are formed by baking nickel plating or silver paste on both the windward and leeward sides.

〔Effect of the invention〕

With the above configuration, the air passing through the flow path of the substrate 1 is heated by the heat generated in the substrate 1, and furthermore, the air passing through the flow path of the substrate 1 is heated by the heat generated in the substrate 1.
The air heated by the substrate 1 passing through the pores of the porous layer 3 is heated by pumping out the heat generated in the porous layer 3, and is heated by the porous layer 3, thereby producing high-temperature hot air.

[Brief explanation of drawings]

1N is a perspective view of one embodiment of the present invention, and FIG. 2 is a sectional view. Figure 1 Figure 2 Procedure TiH Correct 1: 11Total January 30, 2059 To Wa 1 Commissioner of the Japan Patent Office 1, Indication of the case Showa FI + 1957 Patent Application No. 192246 2, Name of the invention Heat generating plate 3, Amendment Relationship with the case of the person who filed the patent application Address of the patent applicant: 1048 Kadoma, Oaza, Shinshi City
Address Name (583) Matsushita Electric Works Co., Ltd. Representative Iku Kobayashi 4, Agent Address Person IWm Kadoma City Daicho Kowama 1048
Address 7, Contents of Amendment Contents of Amendment (1) The scope of claims is amended as follows. "(1) A heat generating plate characterized by forming a large number of air channels on a substrate having positive resistance-temperature characteristics and forming a porous layer made of metal fibers on the leeward side of the substrate." 2) In the fence of the detailed description of the invention, in the specification ■ Page 2, line 5, 1, ``continuously'' should be corrected to ``in large quantities.'' (3. In the Detailed Description of the Invention section, delete ``warmed by substrate 1'' on Seiwa, page 3, lines 15 to 16. (4) In the Detailed Description of the Invention section, delete ``warmed by substrate 1'' on page 3, line 16. ``It is possible.'' [Then, the wind temperature is rising on the leeward side, so the heat exchange rate is getting worse.Therefore, as well as pumping out with metal fibers, the turbulent flow caused by these 1#b fibers on the windward side. The effect increases the heat exchange amount by 1, which improves efficiency.Furthermore, by pumping out the heat from the leeward side, this heating plate is turned on.
This is corrected to ``off (OF>) which has a good switching function and becomes a single-efficiency amplifier.''

Claims (1)

[Claims] +11 A substrate having positive resistance-temperature characteristics is formed with a large number of air flow paths, and a metal layer is formed on the leeward side of the substrate.
A heat generating plate characterized by a porous layer formed of +11.