JPS6130884Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is an electric auxiliary heater that temporarily heats occupants in place of a hot water car heater when a vehicle internal combustion engine (hereinafter referred to as engine) is started in cold weather. Concerning control of equipment.

Conventionally, this type of auxiliary heating device was, for example, an air heater.
The conditioner duct has a positive temperature coefficient and the electrical resistance suddenly changes around the Curie temperature.
A BaTiO ₃ -based oxide semiconductor was installed, and the electric auxiliary heating system temporarily provided supplementary heating for the occupants during the early stages of engine startup when heating by the hot water car heater could not be provided.

However, this type of electric auxiliary heating device
In order to provide comfortable heating to the passengers, a large amount of power is required (for example, about 300W for the face), so if the engine rotation is not stable immediately after starting the engine, or before starting the engine, When the device was activated, the amount of battery discharge increased or the engine stalled due to unstable engine rotation, which sometimes hindered engine starting.

The present invention has been made with the intention of eliminating such drawbacks. The present invention operates by receiving an input signal from the output terminal of a regulator that regulates the generated voltage of a generator driven by a vehicle engine. In other words, a delay circuit that outputs an output voltage several seconds to several tens of seconds after receiving the generated voltage generated by the rotation of the generator as an input signal is used, and the output signal is used to control the power supply circuit of the vehicle's electric auxiliary heating system. By creating a circuit that opens and closes a relay placed in series with the engine, the electric auxiliary heating system for the vehicle cannot be operated for several seconds to several tens of seconds before and after the engine starts, and immediately before and immediately after the engine starts. The purpose of this invention is to prevent the inconvenience of engine stalling due to unstable engine rotation due to the large amount of power consumed.

An embodiment of the present invention will be described below with reference to the accompanying drawings. Referring to FIG. 1, reference numeral 1 denotes a positive temperature coefficient thermistor, which is disposed, for example, near the grille of the duct of an air conditioner. Reference numeral 2 denotes a blower motor that rotates a fan for supplying the heat generated by the positive temperature coefficient thermistor 1 to the passenger as warm air. Reference numeral 3 denotes a known delay circuit, which sends an output signal to relay 3a several seconds to several tens of seconds after receiving an input signal from input terminal 3b, thereby activating it. Input terminal 3 of delay circuit 3
b is L of the regulator 4 that adjusts the generated voltage of the alternator (hereinafter referred to as alternator) 5.
connected to the terminal.

Before starting the engine, the L terminal of the regulator 4 is at ground potential because the movable contact of the switch 4a is connected to the ground side, but when the key switch 9 is turned on and the alternator 5 rotates, the switch 4a is switched and the Since it is connected to the B terminal, an output signal is output from the L terminal. Also, depending on the type of regulator, there are some that output an output signal of about 2V from the L terminal even before the engine starts, but since the operating voltage of this delay circuit is set to 12V, it cannot be used with such a regulator. There is no problem at all if you do.

6 is an operating switch for the electric auxiliary heater, and if the relay 3a is closed, the driver operates the operating switch 6 to open and close the relay 7, allowing the driver to freely operate the electric auxiliary heater as needed. The power supply to the positive temperature coefficient thermistor 1 of the electric auxiliary heater can be turned on and off.

Note that 8a, 8b, and 8c are fuses, and 9 is a key switch.

FIG. 3 shows an example in which the thermistor 1 and blower motor 2 described above are attached to the side wall of a handle column 11 that supports a handle 10, as an electric auxiliary heating device according to the present invention that is separated and independent from the duct of an air conditioner. It has been done. In the figure, 12 is a louver for deflecting the direction of hot air.

The operation will be explained below based on the above embodiment. When the engine is started, the voltage signal generated by the alternator 5 sent from the L terminal of the regulator is applied to the delay circuit 3 from the branch point 3b, and after several seconds to several tens of seconds, the delay circuit 3 outputs an output signal. The signal closes the relay 3a. As a result, if the operating switch 6 is turned on, the relay 7 closes for the first time several seconds to several tens of seconds after the engine starts, supplying power to the heater 1 and motor 2 of the electric auxiliary heating device. Therefore, comfortable heating can be provided to the occupants even immediately after starting when the hot water type car heater is not working.

In the first embodiment described above, the first
The delay circuit 3 was operated by operating the activation switch 6 shown in the figure, but instead of the activation switch 6, an activation switch 3c was placed in the middle of the grounding wire of the delay circuit as shown in Figure 2. The relay 7 may be omitted.

Furthermore, a switch (temperature-sensitive switch such as bimetal) for automatically opening the relay 7 of the electric auxiliary heater when the water temperature of the hot water type car heater rises is provided, for example, in the electric circuit for energizing the relay 7. For example, it is effective in increasing safety, saving power consumption, and informing the occupants of the operating status of the hot water heater.

According to the present invention, in an electric auxiliary heating system for a vehicle that is used when the vehicle engine is started in a cold season and heating cannot be obtained from a hot water car heater, the system is connected in series with a relay to a power supply. , by applying an output signal of a regulator for adjusting the generated voltage of the generator for the vehicle to a delay circuit and opening and closing the electric circuit for energizing the relay by the output signal of the delay circuit, the engine By making the electric auxiliary heating system inoperable for several seconds to several tens of seconds before starting the engine and after starting the engine, it consumes a large amount of power just before and after starting the engine, which causes the engine rotation to become unstable and cause the engine to stall. Inconveniences that may occur can be prevented.

[Brief explanation of the drawing]

FIG. 1 is a circuit diagram of a first embodiment of the present invention.
FIG. 2 is a circuit diagram of a second embodiment of the present invention. FIG. 3 is a schematic diagram illustrating a state in which the electric heater is actually installed in a vehicle. Explanation of symbols, 1...Positive characteristic thermistor, 2...
DC motor, 3...Delay circuit, 3a, 7...Relay, 10...Handle, 11...Handle column, 12...Wind direction deflection louver.

Claims (1)

[Scope of utility model registration request] In an electric auxiliary heating device for a vehicle, the device is connected in series with a relay to a power supply, and the output of a regulator for regulating the generated voltage of the vehicle generator is connected to the input of a delay circuit. An electric auxiliary heating device for a vehicle, comprising a circuit configuration that opens and closes an electric circuit for energizing the relay based on an output signal.