JP3419011B2 - Vehicle air conditioner - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner for automatically adjusting the temperature in a passenger compartment of a vehicle. 2. Description of the Related Art A conventional vehicle air conditioner is, for example, shown in FIG.
As shown in FIG. 2, the cooling operation is as follows. The compressor 1 that compresses the refrigerant is driven by the engine 26, and the outdoor heat exchanger 2 and the blower 3 for the outdoor heat exchanger radiate heat to the vehicle outside air. After condensing and liquefying the refrigerant, the refrigerant is condensed and liquefied by the refrigerant expansion device 4.
Through the indoor heat exchanger 5, and evaporates while cooling the air blown by the indoor blower 6 to perform a cooling operation. In the heating operation, the compressor 1 is stopped, cooling water (warm water) of the engine flows through the heater core 15, and the air blown by the indoor blower 6 is heated. [0004] The temperature of the air blown out of the vehicle interior air outlets 10, 11 and 12 is adjusted by adjusting the opening of a mix damper 16 arranged in a ventilation duct 20.
This is performed by adjusting the amount of warm air flowing through the heater core and the amount of cool air that bypasses the heater core 15. Therefore, by operating the compressor 1, the temperature of the blown air can be continuously adjusted from hot air to cold air, and heating and cooling can be continuously changed. [0005] In addition, for example, as shown in FIG. 5, the controller 25 automatically controls the vehicle interior temperature, the vehicle interior temperature sensor 21, the vehicle interior temperature sensor 22, and the solar radiation amount sensor 2.
3. The mix damper opening is calculated based on information from the set temperature input device 24, and is output to the mix damper adjusting actuator 27. Here, as an example, the calculation is a sum of a basic mix damper opening based on the outside temperature of the vehicle and a correction mix damper opening based on the difference between the vehicle interior temperature and the target temperature, as shown in FIG. Here, the basic mix damper opening is a mix damper opening which is an outlet air temperature that maintains the vehicle interior temperature at the vehicle interior target temperature according to the vehicle exterior temperature. Further, the correction mix damper opening is a value to be added to the basic mix damper opening to make the vehicle interior temperature reach the target temperature when the vehicle interior temperature has not reached the target temperature. [0006] As described above, with respect to the automatic adjustment of the vehicle interior temperature, as shown in FIG. 6, the basic mix damper opening based on the vehicle exterior temperature and the difference between the vehicle interior temperature and the target temperature. No information on the occupant is used in the method of summing with the correction mix damper opening based on the occupant. On the other hand, the automatic adjustment of the vehicle interior temperature is operated by the above-described method to control the air temperature control device for the air blown into the vehicle interior and the air volume control device for the air flow so that the vehicle interior temperature reaches and maintains the vehicle interior target temperature. . Therefore, regardless of the condition of the occupant, the blow-out air temperature and the blow-out air flow rate are adjusted, so that the occupant's intention may not be met and the comfort is impaired. Further, there may be a case where air conditioning is performed more than necessary and energy is wasted. [0007] Therefore, in order to improve the comfort, it is necessary to correct the blow-out air temperature control and blow-out air flow rate adjustment by controlling the temperature in the passenger compartment according to the condition of the occupant. If air conditioning is not required depending on the condition of the occupant, it is necessary to stop the air conditioner and not waste energy. SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a vehicle air conditioner for automatically adjusting the temperature of a vehicle interior, which corrects vehicle interior temperature control in accordance with the condition of an occupant to improve comfort and save energy. . According to the present invention, as a first means, in order to solve the above-mentioned problems, a vehicle interior target temperature is calculated based on a vehicle exterior environment condition and an occupant set temperature input. A vehicle temperature control device for controlling at least the temperature of the air blown into the vehicle interior based on the environmental conditions of the vehicle interior and performing vehicle interior temperature control to reach and maintain the vehicle interior temperature at the vehicle interior target temperature. The vehicle air conditioner further includes a clothing temperature detection device that detects a clothing temperature of an occupant, and the vehicle interior temperature control device corrects the vehicle interior temperature control based on the clothing temperature detected by the clothing temperature detection device. . According to the present invention, as a second means, in order to solve the above-mentioned problem, a vehicle interior target temperature is calculated based on a vehicle exterior environment condition and an occupant set temperature input, and based on the vehicle interior environment condition. An air conditioning system for a vehicle including a vehicle interior temperature control device that controls a vehicle interior temperature to control at least a vehicle interior temperature to a vehicle interior target temperature by controlling a device for controlling the temperature of air blown into the vehicle interior, A skin temperature detection device for detecting skin temperature is provided, and the vehicle interior temperature control device corrects the vehicle interior temperature control based on the skin temperature detected by the skin temperature detection device. According to the present invention, as a third means, in order to solve the above-mentioned problem, a vehicle interior target temperature is calculated based on a vehicle exterior environment condition and a set temperature input of an occupant, and based on the vehicle interior environment condition. An air conditioning system for a vehicle including a vehicle interior temperature control device that controls a vehicle interior temperature to control at least a vehicle interior temperature to a vehicle interior target temperature by controlling a device for controlling the temperature of air blown into the vehicle interior, A clothing temperature detecting device for detecting a clothing temperature and a skin temperature detecting device for detecting a skin temperature of an occupant are provided, and the vehicle interior temperature control device uses the clothing temperature detected by the clothing temperature detecting device and the skin temperature detecting device. The vehicle interior temperature control is corrected based on the detected skin temperature. According to the first means of the present invention, the target temperature in the vehicle compartment is calculated based on the environmental conditions outside the vehicle compartment and the input of the occupant's set temperature. In this calculation, the set temperature is corrected with, for example, the outside temperature of the vehicle to obtain a target temperature in the vehicle. If the temperature outside the vehicle compartment is high, the target temperature inside the vehicle compartment is set to a value lower than the set temperature.
Further, it is determined whether to perform the heating operation or the cooling operation based on the vehicle interior environment condition. Next, the clothing temperature of the occupant is detected by the clothing temperature detecting device. The vehicle interior temperature control device inputs the clothing temperature and determines whether the temperature is high or low. When it is determined that the clothing temperature is high and the heating operation is to be performed, the vehicle interior temperature control device stops air conditioning until the clothing temperature falls to a predetermined value, or lowers the blowing air temperature and the blowing air volume. And slow heating operation. Thus, when the clothing temperature is high, the occupant does not need to heat immediately or does not need to perform rapid heating, so that it is possible to prevent uncomfortable heating from being uncomfortable. Also, heating energy can be saved. On the other hand, when the cabin temperature control device determines that the clothing temperature is low and the heating operation is to be performed, the heating operation is performed. Accordingly, when the clothing temperature is low, heating is required immediately for the occupant, so that rapid heating can be used, so that comfortable heating can be obtained quickly. According to the second aspect of the present invention, the same effect is obtained by using the skin temperature instead of the clothing temperature in the first aspect. According to the third means of the present invention, by using both the first means and the second means, the air conditioning required for the occupant can be more accurately determined. If it is determined that the heating operation should be performed, the clothing temperature is low, while if the skin temperature is high, the slow heating operation is performed. Thereby, it is possible to cope with a case where the occupant is sufficiently warmed before boarding the vehicle and rides in a cold coat. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described with reference to the drawings, in the case of heating. FIG. 1 shows a configuration diagram of a heat pump air conditioner for a vehicle according to an embodiment of the present invention. Here, the difference from the above-described configuration diagram of the conventional vehicle air conditioner shown in FIG. 5 is that the embodiment of the present invention is different from the conventional example shown in FIG. The device 7 and the skin temperature detecting device 8 are added. FIG. 4 shows a heating determination table according to the embodiment of the present invention. In this example, the clothing temperature is divided into three levels, and the skin temperature is also divided into nine types in three levels. If the clothing temperature is high and the skin temperature is high, the air conditioning is stopped because the occupant does not need heating immediately. In the case of high clothing temperature / skin temperature, and high clothing temperature / skin temperature, the operation is also stopped. However, if the air conditioning is stopped and the temperature of the clothing is high, the temperature of the skin is low, the temperature of the clothing is low, and the temperature of the skin is high when the temperature of the clothing is high, the temperature of the clothing is low, and the heating of the occupant is light, the slow heating operation is required. start. From the beginning, the slow heating operation is performed even when the clothing temperature is during the clothing temperature / skin temperature, the clothing temperature is high / the skin temperature is low, the clothing temperature is low, and the skin temperature is high. When the clothing temperature is low and the skin temperature is low, and when the clothing temperature is low and the skin temperature is low, the occupant needs heating, so the medium-speed heating operation is performed. When the clothing temperature is low and the skin temperature is low, the heating is urgently required for the occupant, so the rapid heating operation is performed. Next, the slow heating operation, the medium heating operation, and the rapid heating operation will be described. FIG. 2 shows an air-conditioning operation specification diagram according to the embodiment of the present invention. FIG. 3 shows an air conditioning operation diagram according to the embodiment of the present invention. The vehicle interior temperature control device 25 is a mix damper adjustment actuator 27 which is a blowout air temperature control device.
To control the vehicle interior temperature to reach and maintain the vehicle interior target temperature. Here, the cabin temperature control device 25 is provided with a mix damper adjusting actuator 27.
The vehicle interior temperature control is performed as the sum of the basic mix damper aperture based on the vehicle exterior temperature and the corrected mix damper aperture based on the difference between the vehicle interior temperature and the target temperature. Here, the vehicle exterior temperature is assumed to be TA. In the case of the slow heating operation, the opening degree of the basic mix damper in FIG. The correction mix damper opening is set to the MM operating specification up to the difference T1 between the vehicle interior temperature and the target temperature. Therefore, the opening degree of the mix damper output from the vehicle interior temperature control device 25 to the mix damper adjusting actuator 27 is MS + until the difference between the vehicle interior temperature and the target temperature is T1.
MM, approaches MS in proportion to the decrease in the difference between the vehicle interior temperature and the target temperature, and becomes MS when the vehicle interior temperature matches the target temperature. Therefore, as shown in FIG. 3, while the high air temperature continues to increase rapidly for a relatively short time t1 from the target temperature to the vehicle temperature T1 lower than the target temperature, the air temperature gradually increases thereafter. And the temperature in the cabin rises slowly. In the case of the medium heating operation and the rapid heating operation, T1 · t1 in the case of the slow heating operation is T2 · t, respectively.
2, replaced by T3 · t3. Therefore, the medium-speed heating operation is faster than the slow-speed heating operation, and the rapid-heating operation is faster than the medium-speed heating operation, so that the vehicle interior temperature reaches the target temperature. In the above embodiment, the clothing temperature and the skin temperature are treated equally, but the determination may be made with weighting either one. Further, the slow heating operation, the medium heating operation, and the rapid heating operation are not limited to the above embodiment, and various methods are possible within a range satisfying the gist of the present invention. Although only the outside temperature is determined as the determinant of the basic opening, the set temperature, the amount of solar radiation, and the like may be included. The corrected opening degree is a straight line characteristic with respect to the difference between the vehicle interior temperature and the target temperature, but may be a curve if necessary, or may be a characteristic of several lines using the vehicle exterior temperature or the like as a parameter. According to the first means, the occupant's clothing temperature is detected by the clothing temperature detecting device, and the cabin temperature control device inputs the clothing temperature and determines whether the temperature is high or low. I do. When it is determined that the clothing temperature is high and the heating operation is to be performed, the vehicle interior temperature control device stops air conditioning until the clothing temperature falls to a predetermined value, or lowers the blowing air temperature and the blowing air volume. And slow heating operation. Thus, when the clothing temperature is high, the occupant does not need to heat immediately or does not need to perform rapid heating, so that it is possible to prevent uncomfortable heating from being uncomfortable. Also, heating energy can be saved. On the other hand, when the cabin temperature control device determines that the clothing temperature is low and the heating operation should be performed, the heating operation is performed. Accordingly, when the clothing temperature is low, heating is required immediately for the occupant, so that rapid heating can be used, so that comfortable heating can be obtained quickly. The same applies when it is determined that the cooling operation should be performed. Therefore, the vehicle interior temperature control is corrected in accordance with the condition of the occupant to improve comfort and save energy.
This makes it possible to provide a vehicle air conditioner that automatically adjusts the temperature inside the vehicle. Therefore, for example, the present invention is suitable for an air conditioner having a large power saving problem such as an electric vehicle air conditioner that heats with a heat pump. The same effect is obtained by using the skin temperature instead of the clothing temperature. Further, by using both the first means and the second means, it is possible to more accurately determine the air conditioning required for the occupant. If it is determined that the heating operation should be performed, the clothing temperature is low, while if the skin temperature is high, the slow heating operation is performed. Accordingly, it is possible to cope with a case where the occupant is warmed sufficiently before getting on the tower in the vehicle and rides in a cold coat. Therefore, a vehicle air conditioner that automatically adjusts the temperature of the vehicle interior, which more accurately determines the condition of the occupant, corrects the temperature control in the vehicle interior, improves comfort and saves energy, becomes possible.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a configuration diagram of a vehicle heat pump air conditioner according to an embodiment of the present invention. FIG. 2 (a) is an air conditioning operation specification diagram according to an embodiment of the present invention. FIG. 3 is a waveform diagram showing an air-conditioning operation according to an embodiment of the present invention. FIG. 4 is a heating determination table according to the embodiment of the present invention. FIG. 5 is a configuration diagram of a conventional automatic air-conditioning device for a vehicle. 6 (a) is an air-conditioning operation specification of a conventional automatic air-conditioning system for a vehicle. (B) is the specification. [Description of References] 1 compressor 2 outdoor heat exchanger 3 blower for outdoor heat exchanger 4 refrigerant throttle device 5 Indoor heat exchanger 6 Indoor blower 7 Clothing temperature detector 8 Skin temperature detector 10 Vent outlet 11 Heat outlet 12 Defrost outlet 13 Bent / heat outlet switching damper 14 Defrost outlet damper 15 Heater core 16 Mix damper 17 Outside air inlet 1 Room air inlet port 19 introduces air switching damper 20 air duct 21 car outdoor temperature sensor 22 vehicle interior temperature sensor 23 solar radiation sensor 24 set temperature input unit 25 vehicle interior temperature controller 26 engine 27 mix damper adjustment actuators

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B60H 1/00-1/30

Claims (1)

(57) [Claims] (1) A vehicle interior temperature detecting device and a vehicle interior temperature detecting device
Device, a set temperature input device, an outlet air temperature control device,
A vehicle interior temperature control device, wherein the vehicle interior temperature control device
However, based on the temperature outside the vehicle compartment from each of the above devices, the set temperature
Calculates the vehicle interior target temperature, and calculates the vehicle exterior temperature from each device.
Air temperature based on the temperature, the cabin temperature, and the set temperature.
By adjusting the temperature of the air blown into the cabin by the degree adjustment device,
Control to make the cabin temperature reach the cabin target temperature
A vehicle air conditioner that detects the occupant's clothing temperature
Clothing temperature detector and skin that detects occupant skin temperature
A temperature detection device is provided to prevent
The cabin temperature control device controls the cabin temperature to the cabin temperature.
Depending on the speed at which the internal target temperature is reached,
Heating, slow heating to reach slowly, and stop operation
The clothing temperature from each of the devices, based on the skin temperature,
If both the clothing temperature and skin temperature are low, use rapid heating.
If both temperature and skin temperature are high, stop
If one of the skin temperature is low and the other is high, select slow heating
An air conditioner for a vehicle.