JPH07198206A - Heating apparatus - Google Patents

Abstract

PURPOSE:To miniaturize a heating apparatus and eliminate wasteful use of thermal energy by disposing an electric device between an air fan and a heater. CONSTITUTION:Air sucked into an air fan 11 from upper and lower directions of a casing 10 is blown off from the air fan 11 to the downstream side, part of the air passes through a transistor 12 to cool the transistor 12, and further passes through a heater 13 where it is heated and thereafter blown off from a blow-off outlet 17 into a car. Accordingly, the transistor 12 for controlling the heater 13 produces heat, it is cooled with the air from the air fan 11, so that the air fan 11 is also used as a cooling fan to save a space. Further, the air fed from the air fan 11 absorbs heat of the transistor 12 upon its passing through the transistor 12, and hence the heat is useable for car heating. Hereby, a heating apparatus is miniaturized and wasteful use of thermal energy is eliminated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating device, for example, a simple heating device for automobiles.

[0002]

2. Description of the Related Art Conventionally, as a simple heating system for an automobile,
For example, there is one in which air blown from a blower fan is heated by a heater controlled by a transistor and then blown into the vehicle. The transistor, which generates heat during heating of the heater, is cooled by a cooling fan.

[0003]

However, in the above heating device, since it is necessary to provide a cooling fan in order to cool the high temperature transistor, a space for installing the cooling fan is required, and the device cannot be downsized. Also,
Since the heating device discharges the heat generated by the transistor to the outside and does not use it for heating, there is a problem that heat energy is wasted.

In view of the above problems, it is an object of the present invention to provide a heating device which is small in size and has no waste of heat energy.

[0005]

In order to achieve the above object, a heating device according to the present invention is a heating device for heating air blown from a blower fan through a heater controlled by an electric element to heat the air. The electric element is arranged between the blower fan and the heater.

[0006]

Therefore, according to the present invention, the air blown by the blower fan passes through the electric element and then the heater.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment according to the present invention will be described below with reference to the accompanying drawings shown in FIGS. In this example,
This is a case where it is applied to a simple heating device for automobiles, and a blower fan 1 is provided on the upstream side, which is one end side of a tubular case 10 having a rectangular cross section.
1 is provided, and a transistor 12 and a heater 13 controlled by the transistor 12 are sequentially arranged on the downstream side thereof.

Further, a first thermistor for measuring the ambient temperature is arranged between the blower fan 11 and the transistor 12, and temperature fuses 15 and 15 are arranged between the transistor 12 and the heater 13. A second thermistor 16 for measuring the blowout temperature is arranged on the downstream side of the fuse 13.

Therefore, as shown in FIG.
When the air (indicated by an arrow in the figure) sucked into the blower fan 11 from the vertical direction of 0 is blown out from the blower fan 11 to the downstream side, a part of the air passes through the transistor 12 to be cooled, and further, the heater. After being heated through 13
It is blown into the vehicle from the outlet 17.

Therefore, even if the transistor 12 for controlling the heater 13 generates heat, it is cooled by the air sent from the blower fan 11, so that the transistor 12 is
There is no need to provide a dedicated cooling fan.

In the above embodiment, the case 1
The blowout port 17 of 0 has a mere opening, but not limited to this. For example, as shown in FIG. 3, a bendable bellows-type hose 18 is connected to the blowout port 17 of the case 10. You may stay. With such a structure, the outlet of the heating device can be changed to any position, which is convenient. For example, the bellows-type hose 18
It can also be used as an anti-fog device by bending and blowing out warm air with its outlet on the inner surface of the windshield.

[0012]

As is apparent from the above description, according to the heating device of the present invention, since the control electric element is provided between the blower fan and the heating element, this electric element generates heat. However, since the air blown out from the blower fan passes through the electric element and is cooled, the blower fan can also be used as a cooling fan. Therefore, since it is not necessary to separately provide the cooling fan for electric elements, the installation space can be saved and the device can be downsized. Further, since the air sent out from the blower fan absorbs the heat of the electric element when passing through the electric element, the heat of the electric element can be used for heating. Therefore, the heat energy is not wasted and the heating efficiency is good. Further, according to the present invention, since the blower fan and the heating element and the electric element are incorporated in one device, there is an effect that the device can be easily attached and inspected.

[Brief description of drawings]

FIG. 1 is a schematic plan view showing an embodiment of a heating device according to the present invention.

FIG. 2 is a front sectional view of the heating device shown in FIG.

FIG. 3 is an enlarged perspective view of essential parts showing another embodiment of the heating device according to the present invention.

[Explanation of symbols]

10 ... Case, 11 ... Blower fan, 12 ... Transistor, 13 ... Heater.

Claims (1)

[Claims] 1. A heating device for heating air blown from a blower fan by passing it through a heater controlled by an electric element, wherein the electric element is arranged between the blower fan and the heater. And heating system.