JP2018086979A - Heater system for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heater system for a vehicle capable of reducing cost required for production, by reducing the number of control devices.SOLUTION: A heater system for a vehicle includes a warm wind unit 2 loaded on the vehicle, for sending out warm wind, a heat source (electric heater) 1 for supplying heat to the warm wind unit 2, and an air conditioner 11 for performing air conditioning in the vehicle, and is constituted so that control of the heat source 1 and control of the air conditioner 11 are executed by one control device 16. The warm wind unit 2 includes a heater core 3 into which a heat medium is sent from the heat source 1, and a blower 7 for sending the air into the heater core 3, and may be constituted so that operation for actuating the heat source 1 through the control device 16, and operation for actuating the blower 7 can be interlocked.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a heater system mounted on a vehicle such as an electric vehicle.

  In general, a defroster of a type that blows warm air on the windshield is installed on the windshield of an automobile in order to prevent or remove fogging. In engine vehicles, exhaust heat from the engine is used as a heat source for such a defroster. A heater core and a blower are built in the warm air unit, a heat medium such as water is circulated between the heater core and the engine, and air is sent from the blower to the heater core to create warm air. Such a warm air unit often also serves as a heating device that sends warm air to passengers and the like.

  On the other hand, an electric vehicle that has been put into practical use in recent years does not have an engine as a power source and does not generate exhaust heat that can be used for a hot air unit. For this reason, it is necessary to separately install an electrothermal heater as a heat source.

  FIG. 2 shows an example of a general system configuration (hereinafter referred to as “heater system” or “vehicle heater system”) around the heater and the hot air unit in such an electric vehicle. Here, a heater system mounted on a large bus is illustrated, and an electric heater 1 as a heat source and a heater core 3 built in the hot air unit 2 are connected in a loop by a pipe 4.

  Between the heater core 3 and the heat source (electric heater) 1 is provided a reserve tank 5 for storing a heat medium such as water flowing through the pipe 4, and further in the middle of the pipe 4 extending from the reserve tank 5 to the electric heater 1. The pump 6 is installed, and the heat medium is circulated in the pipe 4 by the operation of the pump 6.

  The electric heater 1 heats the heat medium with electricity supplied from a power source (not shown), and the heated heat medium is sent out toward the downstream heater core 3. Air is sent to the heater core 3 from the blower 7 built in the hot air unit 2 together with the heater core 3, and is exchanged with the heat medium in the heater core 3, and then sent to the outside of the hot air unit 2 as hot air.

  The operation of the electric heater 1 and the pump 6 is controlled by the first control device 8. The first control device 8 is configured to switch the electric heater 1 and the pump 6 on and off by inputting an operation switching signal 1 a to the electric heater 1 and a pump control signal 6 a to the pump 6. At this time, power is supplied to the pump 6 from a power source (not shown) via a relay (not shown), and the power from the power source is received by the relay according to the input of the pump control signal 6a from the first control device 8. Can be configured to turn on and off. The same applies to the on / off of the electric heater 1.

  A temperature sensor 9 is provided at a position corresponding to the outlet of the electric heater 1 in the pipe 4, where the temperature of the heat medium sent from the electric heater 1 is detected and input to the first control device 8 as a temperature signal 9 a. It is like that.

  A warm air unit operation signal 10a can be input to the first control device 8 from a warm air unit operation unit 10 provided in the driver's seat. In addition, a blower operation signal 7a is input from the hot air unit operation section 10 to the blower 7 of the hot air unit 2, and the blower operation signal 7a is used to turn the blower 7 on and off. The amount of warm air delivered from the warm air unit 2 can also be adjusted.

  When the windshield needs to be defrosted or heated, such as in winter, when an operation for operating the electric heater 1 is input by the hot air unit switch 10b provided in the hot air unit operation unit 10 of the driver's seat, In accordance with the wind unit operation signal 10a, the operation switching signal 1a is input from the first control device 8 to the electric heater 1 to turn on the electric heater 1, and the pump is activated by the input of the pump control signal 6a from the first control device 8. 6 operates and the heat medium circulates through the pipe 4.

  In the first control device 8, the electric heater 1 is appropriately switched on and off based on a temperature signal 9 a from the temperature sensor 9 and the temperature of the heat medium flowing through the pipe 4 is adjusted. As a result, the amount of heat supplied from the electric heater 1 to the heater core 3 can be adjusted.

  In addition to the operation of operating the electric heater 1, the operation of operating the blower 7 by the blower switch 10c provided in the hot air unit operation unit 10 is input, and the operation of the blower 7 is turned on by the input of the blower operation signal 7a. Hot air is sent out from the wind unit 2. The blower switch 10c can also adjust the amount of air blown from the warm air unit 2.

  Further, in the case of a vehicle such as a large bus, an air conditioner 11 for heating and cooling a passenger seat or a driver's seat is provided separately from the electric heater 1 and the hot air unit 2 as described above. The air conditioner 11 is controlled via an air conditioning control signal 11a input from the second control device 13 in accordance with an input of an air conditioning operation signal 12a from the air conditioning operation unit 12 provided in the driver's seat. .

  Further, the air conditioning operation unit 12 communicates with the in-vehicle network device 14 provided in the vehicle. A part of the air conditioning operation unit 12 which is an operation panel is configured as a display panel (display unit) 15, and information received from the in-vehicle network device 14 is displayed on the display unit 15.

  Thus, the conventional heater system is installed independently of the system of the air conditioner 11, and these are controlled by mutually different control systems.

  In addition, as a prior art document relevant to the heater system for vehicles mounted in this kind of electric vehicle, there exists the following patent document 1, etc., for example.

JP2013-203252A

  Here, when the heater system is configured by a control system independent of the air conditioner 11 as described above, the second control unit controls the air conditioner 11 separately from the first control unit 8 that controls the electric heater 1 and the pump 6. It is necessary to provide the control device 13, which has been a factor in increasing the cost in manufacturing the electric vehicle.

  In view of such circumstances, the present invention is intended to provide a vehicle heater system that can reduce the number of control devices and reduce the manufacturing cost.

  The present invention includes a hot air unit that is mounted on a vehicle and sends out hot air, a heat source that supplies heat to the hot air unit, and an air conditioner that air-conditions the vehicle, and controls the heat source and the air conditioner. The present invention is directed to a vehicular heater system that is configured to execute control by a single control device.

  Thus, in this way, it is not necessary to newly add a control device for controlling the electric heater or pump separately from the control device for controlling the air conditioner.

  In the vehicle heater system of the present invention, the hot air unit includes a heater core that sends a heat medium from the heat source and a blower that sends air to the heater core, and operates the heat source via the control device. The operation and the operation for operating the blower can be configured to be interlocked. In this way, when the hot air unit is operated, the function of the hot air unit can be activated by a single operation. .

  According to the vehicle heater system of the present invention, the following various excellent effects can be obtained.

  (I) According to the invention described in claim 1 of the present invention, it is not necessary to newly add a control device for electric heater or pump control, so the number of control devices can be reduced and the manufacturing cost can be reduced. Can be reduced.

  (II) According to the invention described in claim 2 of the present invention, when operating the hot air unit, the function of the hot air unit can be activated by a single operation, which is convenient for the passenger.

It is a block diagram which shows an example of a structure of the heater system for vehicles by implementation of this invention. It is a block diagram which shows an example of a structure of the heater system for vehicles in the conventional electric vehicle.

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

  FIG. 1 shows an example of the configuration of a vehicle heater system according to an embodiment of the present invention. In the figure, the same reference numerals as those in FIG. 2 denote the same components. The basic configuration is the same as that of the conventional heater system shown in FIG. 2, but in the case of the vehicle heater system of this embodiment, the control system overlaps with the system of the air conditioner 11, and the electric heater 1 and the pump 6 are A feature is that one control device 16 takes charge of control and control of the air conditioner 11.

  The vehicle heater system of the present embodiment is formed by connecting a pipe 4 to a loop between an electric heater 1 as a heat source and a heater core 3 built in the hot air unit 2. A pipe 4 extending from the heater core 3 to the electric heater 1 is provided with a reserve tank 5, and a pump 6 is installed in the pipe 4 between the reserve tank 5 and the electric heater 1, and the heating medium heated by the electric heater 1 is heated. Heat is supplied to the heater core 3 by sending it to the heater core 3 of the wind unit 2. The warm air unit 2 is mounted in the driver's seat, and air is sent from a blower 7 built in together with the heater core 3 to generate warm air, which is then sent out to the windshield of the driver's seat and the occupant.

  And the control apparatus 16 which controls the air conditioner 11 serves as control of the above-mentioned electric heater 1 and the pump 6. FIG. That is, the control device 16 controls the operation of the air conditioner 11 by inputting the air conditioning control signal 11a to the air conditioner 11, and also inputs the operation switching signal 1a or the pump control signal 6a to the electric heater 1 and the pump 6. Then, on / off control of the electric heater 1 and the pump 6 is performed.

  The electric heater 1 is turned on / off, for example, by supplying electric power from a power source (not shown) to the electric heater 1 via a relay (not shown), and switching according to the input of the operation switching signal 1a from the control device 16. It is also possible to perform switching by inputting the operation switching signal 1a from the control device 16 through communication.

  In addition, power is supplied to the pump 6 from a power source (not shown) via a relay (not shown), and power is supplied from the power source by the relay in response to an input of a pump control signal 6a from the control device 16. It can be configured to control.

  A temperature sensor 9 provided at a position corresponding to the outlet of the electric heater 1 in the pipe 4 detects the temperature of the heat medium and inputs it to the control device 16 as a temperature signal 9a.

  A hot air unit operation signal 10 a can be input to the control device 16 from the hot air unit operation unit 10 provided in the driver's seat. In addition, a blower operation signal 7 a is input to the blower 7 from the hot air unit operation unit 10 so that the operation of the blower 7 can be turned on and off, and the amount of air sent from the blower 7 can be operated.

  In the control device 16, the electric heater 1 is appropriately switched on and off based on the temperature signal 9a and the like to adjust the temperature of the heating medium.

  The air conditioning operation unit 12 provided in the driver's seat inputs an air conditioning operation signal 12a to the control device 16, and the control device 16 inputs the air conditioning control signal 11a to the air conditioning device 11 in accordance with the air conditioning operation signal 12a. The operation of the device 11 is controlled.

  When the windshield needs to be defrosted or heated, such as in winter, the warm air unit operation unit 10 is operated to input the warm air unit operation signal 10a and the blower operation signal 7a. At this time, in the conventional example (see FIG. 2), the operation for operating the electric heater 1 and the pump 6 and the operation for operating the blower 7 are performed separately. It can be linked. That is, in this embodiment, when an operation for operating the hot air unit 2 is performed by the hot air unit switch 10d provided in the hot air unit operation unit 10, the blower operation signal 7a for turning on the blower 7 and the electric heater 1 are operated. The operation switching signal 1a for turning on the power is input to the blower 7 and the control device 16, respectively. In this way, when it is desired to operate the hot air unit 2 as a defroster or a heater, the function as a defroster or a heater can be activated by a single operation, which is convenient for the passenger.

  With the input operation to the hot air unit switch 10d, the control device 16 inputs the operation switching signal 1a to the electric heater 1 to turn on the operation, and inputs the pump control signal 6a to the pump 6 to turn on the operation. Then, the heat medium is circulated in the pipe 4. On the other hand, at the driver's seat, the blower 7 can be operated from the hot air unit operation unit 10 to adjust the amount of hot air blown from the hot air unit 2.

  By the way, in summer and the like, there is a case where it is desired to operate only the blower 7 without using the warm air unit 2 as a defroster or a heater. At that time, the input operation of the blower operation signal 7a and the input of the hot air unit operation signal 10a can be canceled by performing an input operation on the interlock changeover switch 10e of the hot air unit operation unit 10. When the interlock is released, when the hot air unit switch 10d is input, the blower operation signal 7a is input, but the hot air unit operation signal 10a is not input, and the electric heater 1 and the pump 6 are not turned on. In this way, the blower 7 can be operated while the electric heater 1 and the pump 6 are turned off, and the blower 7 can be used as a device for blowing or ventilating. Then, during the summer season, the linkage between the blower operation signal 7a and the hot air unit operation signal 10a is canceled, and when the time when the defroster and the heater are required is input, the linkage changeover switch 10e is input again to link the two. You can do that.

  On the other hand, the air conditioner 11 can be operated in the same manner as the conventional example (see FIG. 2) via the control device 16 by inputting the air conditioning operation signal 12 a from the air conditioning operation unit 12.

  The control device 16 is also configured to communicate with the in-vehicle network device 14 provided in the vehicle. The in-vehicle network device 14 has a self-diagnosis function, and information detected when a failure or the like is detected in a part of the devices (including the electric heater 1, the pump 6, the hot air unit 2, etc.) mounted on the vehicle. Is input to the control device 16. The control device 16 inputs the information received from the in-vehicle network device 14 to the air conditioning operation unit 12 as a display signal 15a, and the air conditioning operation unit 12 has a failure in the display unit 15 that is a display panel incorporated in a part of the operation panel. Information such as location and device status is displayed. The display unit 15 can be provided in the hot air unit operation unit 10 in addition to the air conditioning operation unit 12, or can be provided separately from the air conditioning operation unit 12 and the hot air unit operation unit 10.

  As described above, in the vehicle heater system of this embodiment, the single control device 16 serves as both the control of the electric heater 1 and the pump 6 and the control of the air conditioner 11, and therefore the electric heater 1 and the pump 6 are used. Therefore, there is no need to add a new control device for the control. When manufacturing an electric vehicle, for example, logic relating to the operation of the electric heater 1 and the pump 6 is added to the control device 16 as a control device of the air conditioner 11, and the operation of the electric heater 1 and the pump 6 is controlled via the control device 16. Thus, the number of control devices can be reduced, and the manufacturing cost can be reduced.

  As described above, in this embodiment, the hot air unit 2 mounted on the vehicle and sends out the hot air, the heat source (electric heater) 1 for supplying heat to the hot air unit 2, and the air conditioning of the vehicle are performed. Since the air conditioner 11 is provided and the control of the heat source 1 and the control of the air conditioner 11 are executed by one control device 16, separately from the control device 16 for controlling the air conditioner 11, There is no need to newly add a control device for controlling the electric heater 1 and the pump 6.

  Further, in the present embodiment, the hot air unit 2 includes the heater core 3 that sends the heat medium from the heat source 1 and the blower 7 that sends air to the heater core 3, and the heat source 1 is connected via the control device 16. Since the operation to operate and the operation to operate the blower 7 are configured to be interlocked, when the hot air unit 2 is operated, the function of the hot air unit 2 can be activated by a single operation. Convenient for.

  Therefore, according to the present embodiment, the number of control devices can be reduced and the manufacturing cost can be reduced.

  In addition, the vehicle heater system of the present invention is not limited to the above-described embodiment, and various changes can be made without departing from the scope of the present invention.

1 Heat source (electric heater)
2 Hot air unit 3 Heater core 7 Blower 11 Air conditioner 16 Control device

Claims (2)

  A hot air unit that is mounted on a vehicle and sends out hot air, a heat source that supplies heat to the hot air unit, and an air conditioner that air-conditions the vehicle, each of which controls the heat source and the air conditioner. It is comprised so that it may be performed with the control apparatus of. The heater system for vehicles characterized by the above-mentioned.   The hot air unit includes a heater core that sends a heat medium from the heat source, and a blower that sends air to the heater core, and operates the heat source via the control device and operates the blower. The vehicle heater system according to claim 1, wherein the vehicle heater system is configured to be interlocked with each other.

Images