JPS6129527Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to a control device for an instant warm heater that stops the operation of the blower motor of the instant warm heater when the heater of an air conditioning unit is activated.

In a car, the engine water temperature does not rise easily in winter, so the heater of the air conditioning unit may not work for about 5 to 10 minutes, and the car may be driven with a low interior temperature. Another problem is that the hands gripping the steering wheel are cold, making it difficult to operate the steering wheel. For this reason, there has been proposed an instant heater that heats the user's hands for a predetermined period of time after the engine is started.

An example of a conventional quick-warm heater of this type is shown in FIG. 1. (Refer to Japanese Utility Model Application Publication No. 56-129314 as an earlier application) In the same figure, 1 is an instrument panel, the steering shaft 3 wrapped in a cover 2 passes through the lower part of this, and the tip of this steering shaft 3 A steering wheel 4 is attached to the. 5 is cover 2
This is an instant heating heater attached to the lower part of the heater, and has a flat case 6, and as shown in Fig. 2, a blower motor 7 is installed in the base of the case 6, and a heating element (such as a nichrome heater) 8 is installed at the tip. There is. Reference numeral 9 represents an air intake port, and 10a and 10b represent air outlets that are divided into two parts facing the four directions of the steering wheel.

Figure 2 shows the electrical circuit of the instant heater. In the figure, 11 is an input terminal connected to the power supply side,
The blower motor 7 and heating element 8 are connected to this via a fuse 12 and a power switch 13.

In such a conventional instant heater, when the power switch 13 is turned on, power is supplied to the blower motor 7 and the heating element 8, and the heating element 8 heats the air sent from the blower motor 7 to the air outlet 10a,
It is designed to be sent from 10b to your hand.

Incidentally, although such instant heaters are connected to a power source independently of the air conditioning unit, they often operate the blower motor of the air conditioning unit when the front window is fogged. However, since the heating element of the instant warm heater has a large capacity of 400 to 500 watts in order to produce sufficient hot air, if the blower motor of the air conditioning unit and the blower motor of the instant warm heater are operated at the same time, battery consumption will be significant. This makes it more likely to cause battery build-up.

This invention was made by focusing on such conventional problems, and when the blower motor of the air conditioning unit is operated, the blower motor of the instant heater is stopped, thereby preventing significant battery consumption. Provide a control device for instant heating heaters.

An embodiment of this invention will be described below with reference to FIG. In this figure, the same components as those shown in FIGS. 1 and 2 are given the same reference numerals. 1
4 is an air conditioning unit, 15 is a blower unit, 1
6 is an intake door provided in the blower unit 15, 17 is a blower motor, a cooling unit 18 is provided downstream of these, and further downstream of this cooling unit 18 is a heater core 1.
A heater unit 20 having 9 is provided.

On the other hand, the heater unit 20 near the heater core 19 is provided with an air intake port 21 for the instant heater, and the end of the duct 22 connected to this is connected to another air intake provided in the case 6 of the instant heater 5. Entrance 23
It is connected to the. An air volume adjustment door 24 is provided within the air intake port 23 so as to be openable and closable.

Reference numeral 25 designates an operating switch for the blower motor 17 provided in the blower unit 15 of the air conditioning unit 14, and is connected to the input terminal 11. A relay coil 26 is connected between the operating switch 25 and the blower motor 17. 27 is instant warm heater 5
The operating switch 27 is connected to the input terminal 11 , and the heating element 8 is directly connected to the operating switch 27 . is connected.

Next, we will discuss the effect.

First, when only the instant warm-up heater 5 is to be operated, the operating switch 27 is closed. As a result, the power supply voltage is supplied to the blower motor 7 via the heating element 8 and the relay switch 28, so that both of them operate, and from the heater unit 20 to the air intake port 2.
1. The air taken in by the blower motor 7 from the duct 22 and the air intake port 23 is heated by the heating element 8,
Warm air is blown from the air outlet 10a, 10b to the hand gripping the steering wheel 4.

Next, if the front window becomes cloudy,
If the air conditioning unit 14 is to be operated, the operation switch 25 is closed. Then, power is applied to the blower motor 17 via the relay coil 26, and the blower motor 17 is activated.
While blowing air into the air conditioning unit 14, the relay coil 26 is energized. Therefore, the relay switch 28 is opened, and the power supply to the blower motor 7 of the instant warm-up heater 5 is cut off regardless of whether the operating switch 27 is opened or closed.

In such a case, since the wind sent out by the blower motor 17 of the air conditioning unit 14 passes through the duct 22 and the heating element 8 of the instant warm heater 5,
You can continue to blow hot air to your hands. By closing the air volume adjustment door 24 and reducing the air volume, the blowing temperature can be increased.

As explained above, when the blower motor of the air conditioning unit is operated, the blower motor of the instant warm heater is stopped and the air sent from the blower motor of the air conditioning unit is guided to the heating element of the instant warm heater. By simultaneously operating both blower motors, power consumption is reduced, preventing battery build-up, and the temperature of the air taken into the instant heater increases, allowing high-temperature air to be efficiently delivered to the hand holding the steering wheel. Can be done. In addition, by supplying air from the blower motor of the air conditioning unit to the instant heater when the heating element is not operating, cold air is sent to the aforementioned hands to suppress sweating and prevent hands from slipping on the steering wheel. Various advantages can be obtained, such as the ability to

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing the installation state of a conventional instant heating heater, Fig. 2 is a cross sectional view of the same instant heating heater, and Fig. 3 is an explanatory sectional view of the instant heating heater control device according to this invention. . 5... Instant warm heater, 7... Blower motor, 8...
... Heating element, 14 ... Air conditioning unit, 17 ... Blower motor, 18 ... Cooling unit, 20 ...
...Heater unit, 23...Air intake port, 25,
27...Switch, 26...Relay coil, 28
...Relay switch.

Claims (1)

[Scope of utility model registration request] Apart from the air conditioning unit, which consists of the blower motor, cooling unit, heater unit, etc.
In an instant heater having a blower motor and a heating element installed near the steering post, the air intake port of the instant heater is connected to the downstream portion of the heater core of the heater unit, so that when the blower motor of the air conditioning unit is activated, A control device for an instant warm heater that is equipped with a switch circuit that stops the blower motor of the warm heater.