JP3392691B2 - Automotive air conditioning controller - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air-conditioning control device for air-conditioning the interior of an electric vehicle or a hybrid electric vehicle, and more particularly to an air-conditioning control device that uses a hot water heater.

[0002]

2. Description of the Related Art As an air conditioning control device for air conditioning the interior of an automobile, there is known a device using a hot water type heating device for heating using hot water. As shown in FIG. 6, the hot water type heating device includes a hot water heat exchanger 11 that exchanges heat between hot water and air to generate hot air, a circulation pump 13 that circulates hot water, and hot water heating that heats hot water. It consists of a container 15. In addition to the hot water type heating device, the air conditioning control device further includes a water temperature sensor 17 for detecting the temperature of the hot water, a switch SW1 for starting the hot water type heating device, a control device 23 for controlling the temperature of the hot water, and a hot air And a blower 27 that produces a flow. The control device 23 controls the predetermined target temperature and the water temperature sensor 17
The temperature of the hot water, that is, the temperature of the hot air is controlled by controlling the hot water heater 15 based on the water temperature input from the.

In the conventional air-conditioning control device thus configured, the occupant activates the hot water heating device by turning on the switch SW1. At this time, the hot water is heated by the hot water heater 15 to a constant target temperature regardless of the temperature inside the vehicle compartment. For example, as shown in FIG.
Controlled to ℃. This heated hot water is used by the circulation pump 13
Is circulated in the circulation path 25 and is heat-exchanged with the air flowing in the air conditioning duct 29 in the hot water heat exchanger 11 to generate hot air of a predetermined temperature in the air conditioning duct 29. It is sent to the room and heated.

[0004]

However, in such an air-conditioning control device, the target temperature is set on the assumption of a time when the outside air temperature is low, such as winter, when the heating capacity is very necessary. As described above, the temperature of the hot water is controlled based on the constant target temperature regardless of the temperature inside the vehicle compartment. For this reason, hot water requires much heating capacity in the winter season, etc. even when the heating is used when the heating capacity is not so required, such as in the middle of spring or autumn or when the temperature inside the vehicle is high. It is controlled to the same temperature as the case. Therefore, the hot water is unnecessarily heated during heating when the heating capacity is not so high, such as when the temperature inside the vehicle is high,
There is a problem that occupants feel uncomfortable because wasteful power is consumed and hot air that is unnecessarily hot is blown out.

Therefore, the present invention has been made to solve the above problems, and an object of the present invention is to appropriately control the heating temperature in the passenger compartment and realize low power consumption. An object is to provide a vehicle air conditioning control device suitable for a hybrid electric vehicle.

[0006]

A first air conditioning controller according to the present invention heats hot water to a target temperature and a first switch for starting, and heat-exchanges the heated hot water with air. In the air conditioning control device including a hot water heating device that generates hot air to be used for heating, the target temperature of the hot water when activated by the second switch and the second switch is set to the first switch. And a control device for setting a value lower than the target temperature of the hot water when activated by the switch.

A second air conditioning control device according to the present invention is a hot water type heating device which heats hot water to a target temperature and heat-exchanges the heated hot water with air to generate hot air for heating. in the air conditioning controller having a setting temperature input means for inputting a temperature setting value of the warm air, if the set temperature input temperature set value input by means is smaller than a predetermined value, the hot water of the target temperature the the first target temperature, when the temperature setpoint is above a predetermined value, the hot water of the target temperature first
And a control device for setting a second target temperature lower than the target temperature .

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of an automobile air conditioning control device according to the present invention will be described below with reference to the accompanying drawings.

Embodiment 1. FIG. 1 is a vehicle air conditioning control device according to the first embodiment (hereinafter referred to as "air conditioning control device").
It is a block diagram of. The air conditioning control device of the present embodiment is different from the conventional air conditioning control device shown in FIG. 5 in that the second switch SW2 for starting the hot water heating device in the energy saving mode (details will be described later) is provided to the control device 23. It was provided by. In the prior art, the switch SW1 shown in FIG. 6 is hereinafter referred to as “first switch”, and
The mode when activated by the first switch SW1 is referred to as “normal mode”, and the mode when activated by the second switch SW2 is referred to as “energy saving mode”.
The operation of the air conditioning controller of this embodiment will be described below.

In the air conditioning control device of this embodiment, the first
When the switch SW1 is activated, that is, the operation in the normal mode is as described in the related art. Next, the operation when activated by the second switch SW2, that is, the operation in the energy saving mode will be described.

In the energy saving mode, as shown in FIG. 2, the target temperature of hot water is set to a value lower than a predetermined target temperature of hot water in the normal mode. As described above, in the air conditioning control device of the present embodiment, when the second switch SW2 is activated, the target of the hot water is lower (50 ° C. in FIG. 2) than when it is activated by the first switch SW1. Since the temperature is controlled, the temperature of warm air is also controlled to a temperature lower than that in the normal mode.

Therefore, during heating when the heating capacity is not so required, such as when the outside air temperature is high, the occupant is in the second position.
By activating the heating device by the switch SW2, the temperature of the warm air is not unnecessarily heated to a high temperature, so that heating can be performed at a comfortable temperature and with energy saving.

Embodiment 2. FIG. 3 shows a block diagram of an automobile air conditioning control device according to a second embodiment. In the air conditioning control device of the present embodiment, in the vehicle air conditioning control shown in the first embodiment, instead of the second switch SW2, a set temperature input unit 21 for inputting a set temperature of warm air is provided as a control device. It is provided for 23. In the first embodiment, the target temperature of the hot water is changed depending on the type of the activated switch, but here, the target temperature is changed based on the set value set in the set temperature input unit 21.

FIG. 4 shows the set temperature input section 21 for inputting the set temperature. The set temperature input unit 21 has a setting lever 31 that can move to the left and right.
The temperature is set depending on the position of. That is, the setting lever 31 outputs a set value corresponding to the position of the setting lever 31 set by the occupant to the control device 23. Based on the set value from the set temperature input unit 21, the control device 23 of the present embodiment sets the target temperature of the hot water when the setting lever 31 is in the center from the left end (Cold), and sets the target temperature of the hot water from the center to the right end (Hot). ) Is set to a value lower than the target temperature. FIG. 5 shows the relationship between the temperature set value and the target temperature at this time. As shown in this figure, when the setting lever 31 is from the left end (Cold) to the center, the target temperature is set to 50 ° C, and when the setting lever 31 is from the center to the right end (Hot), it is set to 70 ° C. It In this way, the air conditioning controller of the present embodiment controls the target temperature of the hot water based on the set value corresponding to the position of the setting lever 31 of the set temperature input unit 21. Although the target temperature based on the temperature set value is controlled in two steps here, the setting of the target temperature may be controlled in a plurality of steps based on the temperature set value, or the target temperature is set to the temperature set value. You may control so that it may change linearly according to it.

As described above, the air conditioning control device of the present embodiment changes the target temperature of the hot water based on the set value from the set temperature input unit 21, so that heating is performed when the temperature inside the vehicle compartment is high. In this case, heating that is comfortable for the occupants and that saves energy can be performed.

[0016]

According to the first air conditioning control device of the present invention, a second switch is provided, and when the second switch is activated, the control target temperature of the hot water is set to the first for normal activation. Since it is set to be lower than the target temperature when the switch is started by the switch, it is possible to obtain a comfortable heating temperature and reduce power consumption during heating when the temperature in the vehicle compartment is high.

According to the second air conditioning control device of the present invention, the set temperature input means is provided, and the target temperature when the temperature set value set by the set temperature input means is smaller than the predetermined value is set to be smaller than the predetermined value. Since the temperature is set lower than the target temperature when the temperature is high, a comfortable heating temperature can be obtained and the power consumption can be reduced during heating when the temperature in the vehicle compartment is high.

[Brief description of drawings]

FIG. 1 is a block diagram of an air conditioning control device according to a first embodiment.

FIG. 2 is a diagram showing a temperature change of hot water in each mode in the air conditioning control device of the first embodiment.

FIG. 3 is a block diagram of an air conditioning control device according to a second embodiment.

FIG. 4 is a diagram showing a set temperature input unit.

FIG. 5 is a diagram showing a relationship between a temperature set value and a target temperature of hot water in the air conditioning control device according to the second embodiment.

FIG. 6 is a block diagram of a conventional air conditioning control device.

FIG. 7 is a diagram showing a temperature change of hot water in a conventional air conditioning control device.

[Explanation of symbols]

11 ... Hot water heat exchanger, 13 ... Circulation pump, 15 ...
Hot water heater, 17 ... Water temperature sensor, 21 ... Set temperature input section, 23 ... Control device, 25 ... Circulation path, 27 ... Blower, 29 ... Ventilation duct, 31 ... Setting lever, S
W1 ... (first) switch, SW2 ... second switch.

─────────────────────────────────────────────────── --Continued front page (56) Reference JP-A-7-323717 (JP, A) JP-A-6-323556 (JP, A) JP-A-7-4643 (JP, A) JP-A-6- 293211 (JP, A) JP-A-10-203145 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) B60H 1/22 611 B60H 1/22 B60H 1/03 F24F 11/02 F24D 3/00

Claims (2)

(57) [Claims] 1. A first switch for starting, and a hot-water heating device that heats hot water to a target temperature and heat-exchanges the heated hot water with air to generate hot air used for heating. In the air conditioning control device, the target temperature of the hot water when activated by the second switch and the second switch is lower than the target temperature of the hot water when activated by the first switch. An air conditioning control device for an automobile, comprising: 2. An air conditioning control device equipped with a hot water heating device that heats hot water to a target temperature and heat-exchanges the heated hot water with air to generate hot air for heating. Set temperature input means for inputting the temperature set value of, and if the temperature set value input by the set temperature input means is smaller than a predetermined value , the target temperature of the hot water is set to the first target temperature.
The air conditioner for a vehicle, the control device sets a target temperature of hot water to a second target temperature lower than the first target temperature when the temperature set value is equal to or higher than a predetermined value. Control device.