JPH04104708U - Preheating device for automobile heaters - Google Patents

Abstract

(57) [Summary] [Purpose] The purpose is to provide a heater for an automobile that emits warm air immediately after the engine is started. [Structure] Hot water for engine cooling discharged from the engine is drawn into the heat exchanger 8, air is blown onto the heat exchanger 8 by the blower 9 to warm the air, and the warmed air is passed through the duct to the hot air outlet. In the automobile heater that heats air by blowing air from the heat exchanger 11, an electric heating circuit 16 is provided which operates in conjunction with a drive circuit of the fan 9 for blowing air of the heat exchanger, and the electric heating circuit 16
An electric heater 14 and a thermostat 15 that cuts off power supply to the electric heater when a predetermined temperature is reached are installed between the heat exchanger and the hot air outlet.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

The present invention relates to an improvement of a heater for a car.

0002

[Conventional technology]

Conventional car heaters use engine cooling, which is heated by the engine and becomes hot water. Water for use is drawn into the heat exchanger, and the air is heated by the blower installed on the back of the heat exchanger. The air is blown onto the exchanger to warm it, and the warmed air is sent through the duct to the hot air outlet. It was meant to heat the room by blowing air out of it.

0003

[Problem that the idea aims to solve]

The above heater uses heat warmed by the engine, so until the engine is started, It didn't get warm, especially on mornings in the middle of winter, when the car was shut down overnight, so the inside of the car got cold. Therefore, before driving, the engine must be run while the engine is stopped (so-called idling). Because the engine speed is low, it is not possible to warm up the inside of the car quickly. There was some inconvenience.

0004 In this case, it is not possible to respond if the car needs to be driven immediately, and the driver They have to endure the cold for a while, which causes their bodies to shrink, making them more likely to make mistakes when driving. There are drawbacks. Furthermore, if there is frost on the windshield, remove it by pouring warm water on it before riding. This is complicated and requires work such as removing the paper.

[0005] This invention solves the above drawbacks and provides a heating system for automobiles that generates warm air immediately after the engine starts. The purpose is to provide equipment.

[0006]

[Means to solve the problem]

In order to achieve the above purpose, the present invention has developed a system for cooling engine exhaust gas discharged from the engine. hot water is drawn into the heat exchanger, and air is blown onto the heat exchanger using a blower to warm the air. For automobiles, this heated air is blown out from a hot air outlet through a duct to heat the vehicle. In the heater, an electric heating circuit that operates in conjunction with a drive circuit of a fan for blowing air in the heat exchanger. is installed, and the electric heater of the electric heating circuit is connected to the electric heater. A disconnecting thermostat is installed between the heat exchanger and the hot air outlet. And so.

[0007]

[Effect]

Even before the heat exchanger is warmed up by the engine, the electric heat The air is heated by the heater and hot air is supplied into the duct, and the hot air is released from the hot air outlet. It can quickly heat the inside of the car by blowing air, and when the desired temperature is reached, the electric heater turns on. It is possible to automatically open the channel and switch to engine cooling water only.

[0008]

【Example】

Embodiments of the present invention will be described below with reference to the drawings.

[0009] FIG. 1 is a schematic diagram of the main parts of an automobile equipped with a preheating device according to the present invention. 1 is It is an engine cylinder with a water jacket 2 around its outer circumference and a lamp on the front. A radiator 3 is provided. Then, the warmed water in the water jacket 2 is fed to the water intake pipe 4. The water is drawn into the radiator 3 through the radiator 3 and cooled by applying air in the radiator 3. The cooled water is returned to the water jacket 2 via the cooling water supply pipe 5 and The cooling of the cylinder 1 is performed smoothly.

0010 6 is a heater for heating the inside of the car, etc. It is warmed by cylinder 1 and generates hot water. A heat exchanger 8 that draws in water for engine cooling through a hot water intake pipe 7, and a heat exchanger A fan 9 as a blower device is installed on the back of the container 8, and this fan 9 blows air. The air is blown onto the heat exchanger 8 to warm it, and the warmed air is blown through the duct 10. The air is blown out from the outlet 11 toward the interior of the vehicle to heat the vehicle. Input from hot water service pipe 7 The heated water is cooled by warming the air, and is sent to the water jacket via the drain pipe 12. The water is returned to the container 2 and heated again by the cylinder 1 to become hot water and circulated.

[0011] The preheating device 13 is provided between the heat exchanger 8 and the hot air outlet 11, and is An electric heater 14 that generates heat by being supplied with power from a battery (not shown) and a preheating device 13. When the temperature reaches a certain level, the electric heating circuit 16 connecting the electric heater 14 and the battery is turned off. The thermostat 15, which turns on when the temperature drops, is installed in the duct facing the heat exchanger 8. It is configured by being provided on the mouth side (see Figure 2). This electric heating circuit 16 is connected to the heat exchanger described above. The circuit is opened and closed in conjunction with the blower circuit of the fan 9 of the device 8.

0012 Start the engine and turn on the blower of the heat exchanger 8 to use the heater 6. The fan 9 is rotated by the motor. This sends air towards heat exchanger 8 However, the cylinder 1 has not yet warmed up, and hot air is not sent toward the duct 10. However, since the electric heating circuit 16 of the electric heater 14 is turned on in conjunction with the blower, Electricity is supplied from the battery and heat is generated immediately, and this heat becomes hot air and is discharged from the hot air outlet 11. It blows out air to heat the inside of the car. If this hot air is blown not only into the car but also towards the window, , defrosting can be done quickly. Therefore, before getting into the car, warm up the inside of the car or turn on the windows. To preheat the inside of the car, the engine is warmed up to defrost the car. This eliminates the need for additional work.

[0013] After a while, cylinder 1 warms up, which causes the water in water jacket 2 to cool down. warms up, hot water is supplied to the heat exchanger 8, and hot air is generated in the heater 6. Then This hot air is supplied to the preheating device 13, which is disposed on the inlet side of the preheating device 13. The thermostat 15 detects the hot air from the heat exchanger 8 and sends it to the electric heater 14. Cut off the power supply to prevent battery consumption. This allows the preheating device 13 to play a role. After finishing the process, the heater 6 heats the inside of the car as before.

[0014] 17 is a thermostat for overheating prevention installed on the outlet side of the preheating device 13, which is always on. closes the circuit and supplies power to the electric heater, and when the temperature inside the preheating device 13 rises, the electric heat is turned on. The power supply to the heater 14 is cut off to prevent fires caused by heating.

[0015]

[Effect of the idea]

As mentioned above, this invention is designed to simultaneously rotate the fan between the heat exchanger and the hot air outlet. Since we installed an electric heater that can be switched on, the warm air outlet can be turned on immediately after the engine starts. Warm air blows out, so you can stay inside the car without shivering from the cold even when idling in winter. It is possible to quickly heat the windows and defrost them quickly. In addition, the temperature sensor This prevents the electric heater from running unnecessarily when the engine warms up. This has the effect of stopping the battery quickly and preventing battery consumption.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram of the main parts of an automobile equipped with a preheating device according to an embodiment of the present invention.

FIG. 2 is an enlarged view of the main parts of the present invention.

[Explanation of symbols]

6 Heater 8 Heat exchanger 9 fans 11 Warm air outlet 14 Electric heater 15 Thermostat

Claims (1)

[Scope of utility model registration request] Claim 1: Hot water for engine cooling discharged from the engine is drawn into a heat exchanger, air is blown onto the heat exchanger by a blower device to warm the air, and this warmed air is passed through a duct from a hot air outlet. In a car heater that heats air by blowing air, an electric heating circuit is provided which is linked to a drive circuit of a blowing fan of the heat exchanger, and an electric heater of the electric heating circuit,
A preheating device comprising a thermostat that cuts off power supply to the electric heater when a predetermined temperature is reached, and is installed between the heat exchanger and the hot air outlet.