JPH0789334A - Air conditioning system for automobiles that uses both electricity and fossil fuels - Google Patents

Abstract

(57) [Abstract] [Purpose] Dehumidification operation is possible with a simple configuration in an electric and fossil fuel air conditioner for automobiles, effective use of other heat sources and improvement of comfort and safety are possible. That is the purpose. [Structure] An engine exhaust heat heat exchanger 13 for cooling the engine 12 with water, a combustion-type water heating device 21 arranged outside the vehicle compartment for heating water by combustion, and an exterior heat exchanger for heating water by electricity. An electric water heating device 18, a water pump 19, a ventilation circuit 9 arranged outside the vehicle interior air heat exchanger 5 and connecting the vehicle interior air outlet 8, a heater core 10 arranged in the ventilation circuit 9, and the combustion type A water circuit 20 that connects the water heating device 21, the electric water heating device 18, the water pump 19, and the heater core 10 in series is provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner for an electric and fossil fuel-combined vehicle for air-conditioning the interior of the vehicle.

[0002]

2. Description of the Related Art In a conventional fuel engine air conditioner for a vehicle, for example, a compressor 1 for compressing a refrigerant is driven by an engine as shown in FIG. After the heat is radiated to the air outside the vehicle compartment to condense and liquefy the refrigerant by the exchanger 2 and the outside air heat exchanger blower 3, the refrigerant is guided to the vehicle interior air heat exchanger 5 via the expansion device 4,
Here, the air in the passenger compartment air heat exchanger 6 cools and dehumidifies the air in the passenger compartment to perform the cooling operation. In addition, the heating operation was performed by a hot water heater using the engine water temperature.

In recent years, development of vehicles using both electric and fossil fuels has started. In the air conditioner for automobiles using both electricity and fossil fuel, the cooling action is the same as the above, but the heating action causes a mode in which the engine water temperature cannot be used only by electrically driving the axle, so the dotted line in FIG. As shown in FIG. 3B, the four-way switching valve 7 is used downstream of the compressor 1 to reverse the refrigerant flow path, and the vehicle interior air heat exchanger 5
After radiating heat to the passenger compartment air to condense and liquefy the refrigerant, the refrigerant is guided to the outside air heat exchanger 2 via the expansion valve 3,
Here, the refrigerant absorbs heat while cooling and dehumidifying the air outside the passenger compartment,
It is necessary to perform heat pump heating to evaporate.

As an example of performing air conditioning by engine water temperature and heat pump heating, Japanese Patent Laid-Open No. 5-39807 is disclosed.

[0005]

[Problems to be Solved by the Invention]

(1) Heat pump When the heating capacity is insufficient, the exhaust heat of the engine cannot be used for the electric / fossil fueled vehicle. Instead, another heat source is used instead, and the window of the vehicle is clouded again. The challenge is the need for thermal cycling.

(2) It is also an object to solve the above problems with a simple structure without largely changing the conventional vehicle layout.

(3) Since it is mounted on a vehicle, it is a problem to configure each device safely with respect to the human body.

(4) Improving comfort such as immediate warming is also an issue. (5) The issue is to make the structure as pollution-free as possible.

The above has been a problem in mounting an air conditioner on an electric / fossil fuel vehicle.

The present invention is intended to solve the above problems, and an object thereof is to enable dehumidification operation with a simple structure, to effectively utilize other heat sources, and to improve comfort and safety. It is a thing.

[0011]

[Means for Solving the Problems]

(Claim 1) In order to solve the above-mentioned problems, the present invention provides an electric water heating device, a water pump, and a vehicle, which are arranged outside the vehicle compartment for heating water by electricity, outside the vehicle compartment air heat exchanger. A ventilation circuit that connects the indoor air outlets, a water circuit that connects the heater core arranged in the ventilation circuit, the electric water heating device, the water pump, and the heater core in series are provided.

(Claim 2) In addition to the means of claim 1, combustion-type water heating is arranged outside the vehicle compartment and is connected in series in the water circuit for heating water by combustion. The combustion type water heating device and a drive device for driving the electric water heating device according to claim 1 are provided outside the device.

(Claim 3) In addition to the means of claim 2, in accordance with signals from the outside air temperature detecting device and the outside air temperature detecting device, at the time of heating operation and dehumidifying heating start, the combustion type water heating device and the electric type are operated until a certain time. The control for controlling the driving device according to claim 2, wherein the water heating device is driven, and thereafter, either or both of the combustion water heating device and the electric water heating device are driven according to the set outside air temperature. A device is provided.

(Claim 4) In addition to the means of claim 2, a combustion type water heating device is provided for a certain period of time at the time of heating operation and dehumidification heating activation by a signal of the traveling operation mode detection device and the signal of the traveling operation mode detection device. Drive the electric water heating device, and then drive either the combustion water heating device or the electric water heating device, at that time, when the traveling operation mode is city driving, drive only the electric water heating device, 3. The drive device according to claim 2, wherein the drive of the combustion water heating device is suppressed, and when the traveling operation mode is traveling in a suburban area, both or either of the combustion water heating device and the electric water heating device are driven. Is provided with a control device for controlling.

(Claim 5) In addition to the means of claim 3, traveling is performed by signals of the traveling operation mode detecting device and the traveling operation mode detecting device, and by signals of the traveling operation mode detecting device and the traveling operation mode detecting device. When the driving mode is city driving, only the electric water heating device is driven, the driving of the combustion type water heating device is suppressed, and when the driving mode is suburban driving, the combustion type water heating device and the electric water heating device are A control device for controlling the drive device according to claim 2 is provided so as to drive both or one of them.

[0016]

[Action]

(Claim 1) The present invention can cool, dehumidify, and heat the air in the vehicle compartment by using engine hot water, an electric water heater, and heat pump heating.

(Claim 2) According to the present invention, the air in the vehicle compartment can be cooled, dehumidified, and heated by the engine hot water, the electric water heating device, the combustion water heating device, and the heat pump heating.

(Claim 3) According to the present invention, engine hot water, electric water heating device, combustion water heating device and heat pump heating device are selected according to the air conditioner operation mode and the outside air temperature to cool and dehumidify the air inside the vehicle. Can be heated.

(Claim 4) The present invention cools the vehicle interior air by selecting engine hot water, electric water heating device, combustion water heating device and heat pump heating device according to the air conditioner operation mode and the running operation mode. It can be dehumidified and heated.

(Claim 5) According to the present invention, engine hot water, electric water heating device, combustion water heating device, and heat pump heating device are selected according to the air conditioner operation mode, the outside air temperature, and the traveling operation mode to select the air inside the vehicle compartment. Can be cooled, dehumidified, and heated.

[0021]

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

The present invention according to claim 1 is intended to enable dehumidification operation with a simple structure, effectively utilize other heat sources, and improve comfort and safety. is there.

FIG. 1 is a system diagram of an embodiment of an air conditioner for an automobile using both electric and fossil fuels according to claim 1.

In FIG. 1, a compressor 1, a vehicle exterior air heat exchanger 2, a vehicle exterior air heat exchanger blower 3, a throttle device 4, a vehicle interior air heat exchanger 5, a vehicle interior air heat exchanger blower 6 are shown. A four-way switching valve 7 and a ventilation circuit 9 which is arranged in the vehicle interior so as to surround the vehicle interior air heat exchanger 5 and introduces the air sucked by the vehicle interior air heat exchanger blower 6 to the vehicle interior outlet 8. And a heater core 10 arranged in the ventilation circuit 9 for heating air with hot water, a generator 11, an engine 12 for driving the generator, and an engine for exchanging engine exhaust heat disposed inside the engine with water. Exhaust heat heat exchanger 13
A storage battery 14, a traveling motor 15, a charging device 16 for charging the storage battery 14 with electric power from the generator 11, and a traveling motor control device 17 for driving the traveling motor 15 with the electric power from the storage battery 14 and electricity by air. Electric water heating device 18 for heating the water, water pump 19, and heater core 1
0, the engine exhaust heat heat exchanger 13, the electric water heating device 18, and the water pump 19 are arranged in series to connect a water circuit 20.

When the heat pump heating capacity is insufficient in the air conditioner for electric vehicles using electric and fossil fuels which is simply constructed as described above, either one of the engine exhaust heat exchanger 13 and the electric water heating device 18 is used. It is possible to supplement the heat pump heating capacity by heating the water by heating the water with one or both of them and circulating the warm water through the heater core 10 by the water pump 19 to heat the air. In addition, each device has a water circuit 18 in series.
It is possible to supplement the heating capacity even when the engine is not in use because it is connected by.

By setting the refrigerant circuit side in the cooling mode, the dehumidifying and heating operation by reheating can be performed. further,
By arranging the heating device outside the passenger compartment, it can be safely constructed for the human body.

Although a traveling motor is explained in the figure, the same effect can be obtained in an electric direct drive engine-equipped electric and fossil fuel-equipped vehicle.

Further, when the engine is not used, the effect is further enhanced by arranging the valve and the water circuit so as to bypass the engine exhaust heat heat exchanger 13.

The present invention according to claim 2 is intended to enable dehumidification operation with a simple structure, effectively utilize other heat sources, and improve comfort and safety. is there.

FIG. 2 is a system diagram of an embodiment of an air conditioner for electric vehicles using both electric and fossil fuels according to the present invention.

In FIG. 2, a combustion-type water heating device 21 arranged outside the passenger compartment and connected in series in a water circuit 20 for heating water by combustion, and the combustion-type water heating device 21 outside thereof.
And a drive device 22 for driving the electric water heating device 18. Since the other parts are the same as those in FIG. 1, description thereof will be omitted.

When the heat pump heating capacity is insufficient in the air conditioner for electric and fossil fuel combined vehicles, which is simply configured as described above, the engine exhaust heat heat exchanger 13, the electric water heating device 18, and the combustion type are used. Any one of the water heating devices 21 can be selected, and the heat pump heating capacity can be supplemented by heating water and circulating hot water to the heater core 10 by the water pump 19 to heat air. Furthermore, since each device is connected in series by the water circuit 18, it becomes possible to supplement the heating capacity even when the engine is not used. Furthermore, by equipping two external heat sources, it is possible to improve immediate warmth and improve comfort.

By setting the refrigerant circuit side to the cooling mode, the dehumidifying and heating operation by reheating can be performed. further,
By arranging the heating device outside the passenger compartment, it can be safely constructed for the human body.

Although the driving motor has been described in the drawings, the same effect can be obtained in an electric direct drive engine-equipped electric and fossil fuel-equipped vehicle.

Further, when the engine is not used, the effect is further enhanced by arranging the valve and the water circuit so as to bypass the engine exhaust heat heat exchanger 13.

The present invention according to claim 3 is intended to enable dehumidification operation with a simple structure, effectively utilize other heat sources, and improve comfort and safety. is there.

FIG. 3 is a system diagram of an embodiment of the air conditioner for an automobile for electric and fossil fuel use according to claim 3.

In FIG. 3, the combustion-type water heating device 2 is operated for a predetermined time during heating operation and dehumidifying heating activation by signals from the outside air temperature detecting device 23 and the outside air temperature detecting device 23.
1 and the electric water heating device 18 are driven, and thereafter, the combustion water heating device 21 and / or the electric water heating device 18 are driven so as to drive either or both of them according to the set outside air temperature. Control device 24 for controlling the device 22
It is equipped with. Since the other components are the same as those in FIG. 2, description thereof will be omitted.

When the heating device is controlled in the outside air temperature and the air-conditioning operation mode in the air conditioner for electric and fossil fuel combined automobiles which is simply configured as described above, when the outside air temperature is low and the heat pump heating capacity is insufficient, It is possible to automatically select any one of the engine exhaust heat heat exchanger 13, the electric water heating device 18, and the combustion water heating device 21, heat water, and circulate hot water in the heater core 10 by the water pump 19 to generate air. The heating capacity of the heat pump can be supplemented by heating. Furthermore, since each device is connected in series by the water circuit 18, it becomes possible to supplement the heating capacity even when the engine is not used. Furthermore, by equipping two external heat sources, it is possible to improve immediate warmth and improve comfort.

By setting the refrigerant circuit side to the cooling mode, the dehumidifying and heating operation by reheating becomes possible. further,
By arranging the heating device outside the passenger compartment, it can be safely constructed for the human body.

Although the driving motor has been described in the figure, the same effect can be obtained in an electric direct drive engine-equipped electric and fossil fuel-equipped vehicle.

Further, when the engine is not used, the effect is further enhanced by arranging the valve and the water circuit so as to bypass the engine exhaust heat heat exchanger 13.

The present invention according to claim 4 is intended to enable dehumidifying operation with a simple structure, effectively utilize other heat sources, and improve comfort and safety. is there.

FIG. 4 is a system diagram of an embodiment of an automobile air conditioner for electric and fossil fuel use according to the present invention.

In FIG. 4, signals from the traveling operation mode output device 25 for outputting traveling operation modes such as urban traveling and suburban traveling, and the signals from the traveling operating mode output device 25 are used for heating operation and dehumidifying heating for a certain period of time at the time of activation. The combustion type water heating device 21 and the electric type water heating device 18 are driven, and then either the combustion type water heating device 21 or the electric type water heating device 18 is driven. When traveling, only the electric water heating device 18 is driven, and the drive of the combustion type water heating device 21 is suppressed. When the traveling operation mode is traveling in the suburbs, the combustion type water heating device 21 and the electric water heating device are driven. A control device 26 is provided for controlling the drive device 22 to drive both or either of the devices 18. Other components are shown in Figure 2.
Since it is the same as, the description will be omitted.

By controlling the heating device in the traveling operation mode and the air conditioning operation mode in the air conditioner for electric and fossil fuel combined vehicles, which is simply configured as described above, the heating operation can be performed without pollution in city driving. It will be possible. Since the other effects are the same as those in claim 2, the description thereof will be omitted.

The present invention according to claim 5 is intended to enable dehumidification operation with a simple structure, effectively utilize other heat sources, and improve comfort and safety. is there.

FIG. 5 is a system diagram of an embodiment of the air conditioner for an automobile for electric and fossil fuel use according to claim 5.

In FIG. 5, an outside air temperature detecting device 23, a traveling operation mode output device 25 for outputting a traveling operation mode such as traveling in an urban area and suburban areas, and the outside air temperature detecting device 2 are shown.
3 and the signal from the traveling operation mode output device 25, the combustion water heating device 21 and the electric water heating device 18 are driven for a certain time during heating operation and dehumidification heating activation, and then the combustion water Either the heating device 21 or the electric water heating device 18 is driven. At that time, when the traveling operation mode is city driving, only the electric water heating device 18 is driven to drive the combustion water heating device 21. When the traveling operation mode is traveling in the suburbs, the control device 27 for controlling the drive device 22 so as to drive the combustion type water heating device 21 and the electric water heating device 18 or both of them is controlled. It has. Since the other components are the same as those in FIG. 2, the description is omitted.

By controlling the heating device in the outside air temperature, the running operation mode and the air-conditioning operation mode in the air conditioner for electric and fossil fuel combined vehicles, which is simply constructed as described above, the heat pump heating is performed because the outside air temperature is low. When the capacity is insufficient, any one of the engine exhaust heat heat exchanger 13, the electric water heating device 18, and the combustion water heating device 21 can be automatically selected, and the heating operation can be performed without pollution in the city driving mode. It will be possible. Since the other effects are the same as those in claim 2, the description thereof will be omitted.

[0051]

【The invention's effect】

(Claim 1) In a simple configuration in which hot water circuits are arranged in series, dehumidification in the vehicle interior due to reheating and an external heat source arranged outside the vehicle interior when the heat pump heating capacity is insufficient can be used. In addition, it is safe for the human body because the external heat source is placed outside the vehicle.

(Claim 2) In addition to the effect of claim 1, since a combustion type external heat source can be utilized, it is possible to cope with even lower temperatures.

(Claim 3) In addition to the effect of claim 2, since the heat source selection can be controlled automatically by the outside air temperature, the electric air heating can be performed until the outside air temperature becomes a constant temperature when necessary. Therefore, air conditioning can be configured as a pollution-free vehicle as much as possible.

(Claim 4) In addition to the effect of claim 2, since the heat source can be automatically selected in the traveling mode, the air conditioning can be configured as a pollution-free vehicle in the city area.

(Claim 5) In addition to the effect of claim 2, the heat source can be automatically selected according to the outside air temperature and the traveling mode, so that electric air heating is performed in urban areas and when the outside air temperature reaches a certain temperature. Therefore, the air conditioning can be further configured as a pollution-free vehicle.

[Brief description of drawings]

FIG. 1 is a system diagram of an embodiment of an air conditioner for an electrically driven vehicle of the present invention.

FIG. 2 is a system diagram of an embodiment of the air conditioner for the electric drive vehicle.

FIG. 3 is a system diagram of an embodiment of the air conditioner for the electric drive vehicle.

FIG. 4 is a system diagram of an embodiment of the air conditioner for the electric drive vehicle.

FIG. 5 is a system diagram of an embodiment of the air conditioner for the electric drive vehicle.

FIG. 6A is a configuration diagram of a conventional cooling air conditioner for a vehicle driven by a fuel engine, and FIG. 6B is a configuration diagram of a conventional air conditioner for an electrically driven automobile.

[Explanation of symbols]

 1 Compressor 2 Outside air heat exchanger for vehicle 3 Air blower for outside air heat exchanger for vehicle 4 Throttle device 5 Air heat exchanger for vehicle interior 6 Air blower for air heat exchanger for vehicle interior 7 Four-way switching valve 8 Air outlet for vehicle interior 9 Ventilation circuit 10 Heater Core 11 Generator 12 Engine 13 Engine Exhaust Heat Heat Exchanger 14 Storage Battery 15 Traveling Motor 16 Charging Device 17 Traveling Motor Control Device 18 Electric Water Heating Device 19 Water Pump 20 Water Circuit 21 Combustion Water Heating Device 22 Drive Device 23 Outside Air Temperature Detection Device 24 Control Device 25 Traveling Mode Output Device 26 Control Device 27 Control Device

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI technical display B60H 1/08 B

Claims (5)

[Claims] 1. A storage battery, an engine, a generator for converting the output of the engine into electricity, a charging circuit for charging the output of the generator to the storage battery, a compressor driven by electricity, and an air heat exchanger outside the vehicle. A heat pump cooling and heating device that consists of a blower device for the outside air heat exchanger, a throttle device that throttles the refrigerant flow rate, an air heat exchanger for the passenger compartment air, a blower device for the passenger compartment air heat exchanger, and a four-way switching valve, and heats water by electricity An electric water heating device arranged outside the vehicle compartment, a water pump, a ventilation circuit arranged outside the vehicle interior air heat exchanger to connect the vehicle interior outlet, a heater core arranged in the ventilation circuit, and the electricity An electric and fossil fuel combined air conditioner for a vehicle, comprising a water circuit that connects each of the water heater, the water pump, and the heater core in series. 2. A combustion-type water heating device, which is arranged outside the passenger compartment and is connected in series in a water circuit for heating water by combustion, and the combustion-type water heating device and the electric water heating device are externally provided. The air conditioner for an electric and fossil fuel combined vehicle according to claim 1, further comprising a driving device for driving. 3. An air conditioner for an electric and fossil fuel combined vehicle according to claim 2, further comprising an outside air temperature detecting device and a control device for controlling the drive device by a signal from the outside air temperature detecting device. 4. An air conditioner for an electric and fossil fuel combined vehicle according to claim 2, further comprising a traveling operation mode detection device and a control device for controlling the drive device by a signal from the traveling operation mode detection device. 5. The air conditioner for an electric and fossil fuel combined vehicle according to claim 3, further comprising a traveling operation mode detection device and a control device for controlling the drive device by a signal from the traveling operation mode detection device.