JPH115434A - On-vehicle air-conditioning device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an on-vehicle air-conditioning device which can be stopping an engine, even when a nap is taken for several hours in a service area, in the winter or the summer season. SOLUTION: This on-vehicle air-conditioning device 100 furnishes a separate equipment battery 1 equipped separately from the main battery 10 of a vehicle, and charged during the generator 9 of the vehicle generates the power; and an air-conditioning means (a heater) driven by the power fed from the separate equipment battery 1 separated from the main battery 10 when an engine is stopped. The carging of the separate equipment battery 1 from the generator 9 is to be carried out through a cigar lighter socket 8.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an on-vehicle air conditioner, and more particularly to an on-vehicle air conditioner suitable for use when a long-distance truck parks in a service area for a long time in winter or summer and a driver takes a nap. It relates to an air conditioner.

[0002]

2. Description of the Related Art In recent years, long-haul trucks have been the mainstay of transportation. For example, parts are transported from production factories to assembly factories, and daily necessities are transported from production sites to consumption sites, often by long-distance trucks. Some of these conveyed goods are required to arrive at their destination exactly at a designated time, for reasons such as reduction of inventory and improvement of contents of transportation services. For example, parts used in a factory where a production line process schedule is determined are required to arrive at the factory exactly at a specified time, not sooner or later.

[0003] For this reason, many trucks leave the production area early, and when they come to a service area near the destination, they take a nap until the scheduled time there. Transportation is provided year-round. Therefore, in the winter, you can see a nap taking place while the engine is running and white steam rises from the exhaust pipe. Although it replaces air conditioning, this nap with the engine running can be seen in summer.

[0004] The widespread use of automobiles has enriched our lives, but has also resulted in exhaust emissions. In order to prevent this, exhaust gas regulations were imposed on gasoline vehicles in 1983. On the other hand, for diesel vehicles, technical development was difficult and measures were delayed. However, recently, there has been a movement and regulation to get this done.

[0005] In response, a movement to prevent unnecessary exhaust from diesel vehicles is spreading. For example, in Tokyo and other places, there is a growing movement to stop the engine as much as possible, even when waiting for a traffic light at an intersection, as well as when stopping at the first bus stop. Such an approach is necessary for long-haul trucks. Stopping the engine during a nap in the service area eliminates exhaust gas pollution and saves fuel. Noise is also reduced.

However, when the engine is stopped,
The problem is how to heat and cool the driver's seat. As a result of investigations by the applicant regarding heating, there have been found, as conventional examples, those described in JP-A-58-101811 and those described in JP-A-59-70208. What is described in JP-A-58-101811,
Even when the vehicle is stopped, the power to the seat heater can be arbitrarily supplied, so that the power to the seat heater is stopped when the battery voltage is low, in case the engine cannot be started due to the battery running down.

[0007] Japanese Patent Application Laid-Open No. 59-70208 discloses a method in which heating is performed by utilizing the residual heat of cooling water after the engine is stopped. After the engine is stopped, a cooling water pump and a fan are operated by a battery. Heating. Here as well, there is a fear that the battery runs out, and when the remaining amount of electricity falls below a predetermined amount, the power supply to the pump and the fan is stopped. In addition, Japanese Unexamined Patent Application Publication No.
15, and those described in JP-A-59-188713.

[0008]

However, these conventional devices use a main battery, that is, a battery for starting the engine which is originally mounted on the vehicle, or use the residual heat of the engine cooling water to heat the room. It was to do. As is well known, a large amount of current flows when the engine is started. For this reason, if the charge amount of the battery is insufficient, the engine may not start properly. Especially in winter, the engine cools down and the battery capacity drops, so if the engine does not start after several operations, the starter will eventually stop turning.

Therefore, the fact that each of the above-mentioned applications pays attention to overdischarging of the battery is a big nod from the viewpoint of preventing the battery from running down. However, it is safer to prohibit the use of the main battery as soon as possible, especially in winter, taking into account the fact that the engine gets cold while stopped and taking a nap. Also, we definitely want to avoid troubles such as the engine not running and not reaching the destination at the scheduled time, so from this point of view, it is better not to use the main battery itself. That is, the conventional method of using the main battery has a danger that the energy that can be actually used is small or that the engine cannot be started. For this reason, there are considerable difficulties in applying these to the applications used here, that is, the applications of a long nap in a service area with the engine stopped in winter and summer.

[0010] In addition, although the object of application will be only heating, there is also a problem in utilizing the residual heat of the cooling water. That is, the cooling water has a water temperature near 100 ° C. immediately after the engine is stopped. However, the amount of water is at most 10 liters. Therefore, less energy is retained. It is assumed that such cooling water is circulated in winter by an electric pump as in the above-described conventional example. These circulate in the radiator for heating the driver's seat and also in the radiator for cooling the engine and in the engine. A radiator for cooling an engine is an excellent heat dissipating element. In addition, the engine driving force transmission mechanism is also made of metal and is a good heat radiator. Therefore, the cooling water circulation dissipates the important heat to the outside while heating the driver's seat. As a result, it would seem that heating this would only last a fairly short time. There is also the disadvantage of cooling down the engine quickly.

An object of the present invention is to solve such a problem of the prior art, and to make it possible to keep the engine stopped even when taking a nap for several hours in a service area in winter or summer. It is to provide a harmony device.

[0012]

In order to solve the above-mentioned problems, according to the present invention, there is provided a separately provided battery which is provided separately from a main battery of a vehicle and is charged while a generator of the vehicle is generating power. Air conditioning means driven by power supplied from the separately-installed battery separated from the main battery (claim 1). In addition, charging of the separate equipment battery from the generator is performed via a cigarette lighter socket provided in the vehicle (claim 2). In addition, the separately provided batteries and the air conditioning means are housed in the same housing (claim 3). Further, each of the air conditioning means is an electric heater (claim 4). Further, each of the air conditioning means is a cooling device using a refrigerant (claim 5). Further, the air conditioning means is a cooling and heating device using a refrigerant (claim 6).

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail based on illustrated embodiments. FIG. 3 shows a mechanical structure of the in-vehicle heating device 100 according to the embodiment. In order to clearly show the internal structure, the housing 16 is shown in a see-through state (two-dot chain line). The in-vehicle heating device 100 is disposed, for example, on the floor of the driver's seat of a truck (here, “cab” means “cab”).
Meaning. It is not "the seat where the driver sits.") There is a separate equipment battery 1 inside and it is heavy, so it will not fall down while running even if it is only placed on the floor, but it is better to secure it to the floor with a belt etc. for safety reasons . Power is taken from the cigarette lighter socket 8 in the driver's seat (described later).

In FIG. 3, reference numeral 18 denotes a suction port, 19 denotes an air outlet, and 17 denotes an air passage connecting these. The ventilation path 17 has an inverted L shape when viewed from the left side, and is arranged along the back and bottom surfaces of the housing 16 (in FIG. 3, the lower left is the front side). A thermostat 13 that is intermittent according to the temperature of the suction air is arranged in the ventilation path 17 near the suction port 18. The line flow fan 15 is arranged at the bent portion of the inverted L-shape. The heater 14 made of ceramic or the like is arranged on the side of the outlet 19. This corresponds to the electric heater in the claims and the air conditioning means in the claims. The air in the driver's seat sucked from the suction port 18 by the rotation of the line flow fan 15 passes through the ventilation path 17, is heated by the heater 14, and is blown out from the outlet 19 into the driver's seat.

A separately-installed battery 1 is arranged on the ventilation path 17. This is, for example, a nickel cadmium battery or the like, and a main battery 10 for starting the engine.
Apart from (FIG. 1), it is provided for the vehicle-mounted heating device 100. Any type of battery is acceptable. Ordinary lead batteries may be used. However, considering the arrangement inside the driver's seat, a type that does not emit gas, such as a nickel cadmium battery, is preferable. For a lead battery, a type that does not emit a gas with a catalyst is preferable. However, since the driver's seat is not completely sealed, it is not a useless case unless the type emits gas. The circuit unit 20 is disposed on the separately-installed battery 1. Here, the voltage detection circuit 6, the switching control circuit 7, and other circuits shown in FIGS. 1 and 2 are housed.
A device switch 12 is disposed on the upper surface of the housing.

FIG. 1 shows an electric circuit of the on-vehicle heating apparatus 100 of this embodiment (the right side of the two-dot chain line in FIG. 1 shows a portion of the on-vehicle heating apparatus 100 of this embodiment). In the figure,
Reference numeral 1 denotes a separately-installed battery described above, and reference numeral 2 denotes a heater circuit that receives power from the battery 1. Figure 2 shows the internal configuration
(Described later). Reference numeral 3 denotes a first switch for intermittently connecting the battery 1 and the heater circuit 2 (normally closed). A cigar lighter plug 4 is connected to a cigar lighter socket 8 in the driver's seat. Reference numeral 5 denotes a second switch for interrupting the connection between the cigarette lighter plug 4 and the battery 1 (normally open).

Reference numeral 6 denotes a voltage detection circuit which is connected to the cigar lighter plug 4 and detects the voltage of the main battery 10. Reference numeral 7 denotes a switching control circuit which switches the first and second changeover switches 3 and 5 in response to the output of the voltage detection circuit 6. These circuits 6 and 7 operate on dry batteries (not shown). Since the energy consumption is small and the operation of the circuits 6 and 7 may be stopped when the energy is consumed, the circuit 6 and the circuit 7 may be operated with the battery 1 provided separately. The power of the main battery may be used.

An alternator 9 is connected to the cigar lighter socket 8 via an engine key switch 11 and is connected to a main battery 10. The engine key switch is a multi-circuit switch, and the switch 11 shown here conducts at each of the accessory and engine-on positions. Reference numeral 21 denotes a rectifying diode incorporated in the alternator.

FIG. 2 shows the details of the heater circuit 2. The circuit 2 includes the device switch 12, the line flow fan 15, the thermostat 13, and the heater 14 shown in FIG.
It consists of. These are connected as shown, and the input side (IN) of the device switch 12 is connected to the first switch 3 in FIG.

In the present invention, the battery 1 is provided separately from the main battery 10, and air conditioning (heating, cooling) is performed by utilizing the energy of the sneak. Enable. The separately equipped battery 1 is charged while the engine is running. When using the in-vehicle heating device 100, it is better not to use the power of the main battery. Then, the second switch 5 is opened, and the first switch 3 is turned on. On the other hand, during the rotation of the engine, normal heating using the cooling water can be performed, and the separate battery 1 is preferably sufficiently charged. Therefore, while the engine is rotating, the second switch 5 is turned on and the first switch 3 is opened.

For this reason, the rotation and non-rotation of the engine are detected by the voltage detection circuit 6, and the second switch 5 and the first switch 3 are opened and closed. The rotation or non-rotation of the engine is detected by a change in the terminal voltage of the main battery 10. That is, the alternator 9 generates a predetermined voltage when the engine rotates, and this voltage is set several volts higher than the open terminal voltage of the main battery 10 to charge the main battery 10. Specifically, in the case of a 24 volt system, the terminal voltage of the main battery 10 when the engine is rotating is 27 to 8 volts, and is about 24 volts when the engine is stopped.

The voltage detection circuit 6 detects the difference between the voltages. More specifically, a value approximately halfway between the two voltages is used as the reference voltage, and the voltage detection circuit 6 outputs a high voltage detection signal if the voltage of the main battery 10 is higher than this reference voltage, and otherwise outputs a low voltage detection signal. Generate a voltage detection signal. Upon receiving this signal, the switching control circuit 7
5 is controlled to open and close. That is, since the high voltage detection signal is output when the engine is rotating, during that time,
The second switch 5 is closed and the first switch 3 is opened. This causes a charging current to flow from the alternator 9 to the separately provided battery 1.

In winter, when the engine is stopped in a service area or the like, a low voltage detection signal is sent from the voltage detection circuit 6. The switching control circuit 7 opens the second switch 5 and makes the first switch 3 conductive. Thus, the heater circuit 2 is disconnected from the main battery 10 and connected to the separately-installed battery 1. Then, the device switch 12 is turned on. Heating of the heater 14 and driving of the line flow fan 15 are performed by the power of the separately provided battery 1, and the inside of the driver's seat is heated for a long time. When the temperature is equal to or higher than the set temperature, the thermostat 13 is opened, and the heater 14 is not energized. The capacity of the separately-installed battery 1 is determined by the power consumption of the heater 14 and the integrated value of the desired duration.

FIG. 4 shows a circuit diagram of a vehicle-mounted heating device 200 according to the second embodiment (a portion surrounded by a two-dot chain line in the drawing is a vehicle-mounted heating device 200 according to the second embodiment). . The appearance of the vehicle-mounted heating device 200 according to the second embodiment,
The mechanical structure is the heating device 1 for mounting on a vehicle according to the first embodiment.
00 (FIG. 3), only the circuit connections differ as shown in FIG. 1 and 2 are denoted by the same reference numerals, and description thereof will be omitted. The on-vehicle heating device 200 according to the second embodiment includes a terminal G of the alternator 9.
It is characterized in that the generated voltage of T is supplied directly to the separately provided battery 1 via the diode 22.

That is, the terminal GT of the alternator 9 has a predetermined power generation voltage when the engine is rotating, and supplies a charging current to the separately-installed battery 1 via the diode 22. On the other hand, when the engine is stopped, no voltage is applied to the terminal GT of the alternator 9. However, since it is blocked by the diode 21, it is disconnected from the main battery 10. Further, since the diode 22 is provided, the separately-installed battery 1 does not discharge toward the alternator 9. Further, the current of the separately provided battery 1 flows through the heater 14, and the current of the main battery 10 does not flow. Therefore, even when connected as in the second embodiment 200, charging is performed while the generator of the vehicle is generating power, and air conditioning is performed by a separately-installed battery that is disconnected from the main battery while the engine is stopped. That is, the configuration of the present invention can be realized.

A modified example will be described. The separately-installed battery 1 may be arranged in a place other than the housing 16. For example, a shelf may be provided near the main battery, the separately-equipped battery 1 may be arranged there, and connected to the heater 14 in the driver's seat. It is to be noted that the separately equipped battery 1 as in each embodiment
Is disposed on the heater 14, the battery 14 is separately heated by the heater 14, and even in winter, the energy stored in the battery 1 can be extracted to the end. Instead of using the cigarette lighter plug 4, it may be directly connected to the plus terminal of the main battery 10.

The detection of the rotation and stop of the engine is not limited to the battery voltage. For example, the output of the engine oil pressure sensor may be used, or the output of the on-terminal of the engine key switch may be used. (Strictly speaking, even if the engine key is turned on, the engine is not turned until the starter is turned. Does not turn, but since the engine key switch is not turned on for a long time without starting the engine, this is sufficient.)

The air conditioner includes a heating device (heater 1).
It is not limited to 4). In summer, a cooling device using a refrigerant such as chlorofluorocarbon can be used. It is also good to use a heat pump system for both summer and winter. When implementing the present invention as a cooling device or a cooling / heating device, instead of the heater circuit 2, for example, a configuration similar to that of an air conditioner for a window of a house, that is, a compressor, a room-side radiator, a room-side blower, and a room An outer radiator, an outdoor blower, and the like are incorporated in the housing 16.

The outdoor radiator is provided with two ducts (hoses) for introducing and discharging outside air. In use, for example, the window of the passenger seat is slightly lowered, and the ends of the two ducts are put out through the gap. The gap is closed. With an outdoor blower,
Intakes and discharges outside air to release the heat of the outdoor radiator to the outside. Similar to the mounting plate of the window ventilation fan, a plate having a duct opening having a shape corresponding to the window opening may be formed by resin molding, and the duct tip may be attached to the duct opening. A pipe hole may be provided in the driver's seat wall in the same manner as a pipe hole is provided in a house wall.

The application of the present invention is not limited to long-distance tracks. While parked or stopped, it can be used to heat various other vehicles where it is desired to keep the engine off. Although regulated, it does not mean that there is no pollution, so it can be applied to vehicles that use gasoline or other fuels.

[0031]

As described above, according to the first aspect of the present invention, a battery separate from the main battery of the vehicle is provided, and the battery is charged while the generator of the vehicle is generating power. When the engine is stopped, the separately provided battery is separated from the main battery, and the air conditioner is driven by the power of the separately provided battery. Therefore, the battery of this separate equipment is always charged during the running, and the driver's seat can be cooled and heated at any time without turning on the engine when taking a nap in a service area in winter or summer. Since the main battery is not used, there is no worry that the engine cannot be started,
Heating and cooling can be continued until all the energy stored in the separately equipped battery is used up.

[0032] In the invention according to claim 2, charging of the separate battery from the generator is performed via a cigarette lighter socket provided in the vehicle.
In this case, the vehicle air conditioner can be connected and disconnected only by pulling out and inserting the cigarette lighter plug, and can be stored in another place when not in use, such as in summer.

According to the third aspect of the present invention, the separate battery and the air conditioner are housed in the same housing. This makes it easier to handle the device, such as installation, movement, and clearing. In particular, when using a power supply method via a cigar lighter, the ease of handling is further enhanced.
The air conditioning means may be an electric heater (claim 4), a cooling device using a refrigerant (claim 5), or a cooling and heating device using a refrigerant (claim 6). You can do it.

[Brief description of the drawings]

FIG. 1 is a circuit diagram showing a connection in Embodiment 100 of the present invention.

FIG. 2 is a circuit diagram showing a heater circuit according to Embodiment 100 of the present invention.

FIG. 3 is a perspective view showing the structure of Embodiment 100 of the present invention.

FIG. 4 is a circuit diagram showing a connection in Embodiment 200 of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 100 In-vehicle air conditioner of first embodiment 200 In-vehicle air conditioner of second embodiment 1 Separately equipped battery 2 Heater circuit 3 First switch 4 Cigar lighter plug 5 Second switch 6 Voltage detection circuit 7 Switching control circuit 8 Cigarette lighter socket 9 Alternator 10 Main battery 11 Key switch 12 Device switch 13 Thermostat 14 Heater 15 Fan 16 Housing 17 Ventilation path 18 Suction port 19 Blow-off port 20 Circuit section 21 Diode 22 Diode

Claims (6)

[Claims] 1. A battery provided separately from a main battery of a vehicle and charged while a generator of the vehicle is generating power, and a battery provided separately from the main battery when an engine is stopped. And an air conditioner driven by the supplied electric power. 2. The on-vehicle air conditioner according to claim 1, wherein charging from the generator to the battery is performed via a cigarette lighter socket provided in the vehicle. 3. The on-vehicle air conditioner according to claim 1, wherein the separate battery and the air conditioner are housed in the same housing. 4. The on-vehicle air conditioner according to claim 1, wherein the air conditioner is an electric heater. 5. The on-vehicle air conditioner according to claim 1, wherein the air conditioner is a cooling device using a refrigerant. 6. The on-vehicle air conditioner according to claim 1, wherein the air conditioner is a cooling and heating device using a refrigerant.