JPS6061323A - Automatic controlling air conditioner - Google Patents

Abstract

PURPOSE:To make accurate data on an outside air condition obtainable before being affected by radiation of heat in an engine cooling device, by starting an operation control device with a starting switch turned on, while storing an output signal out of an outside air condition detecting sensor in memory as input data at once. CONSTITUTION:When an ignition switch 45 is turned on, the whole lot of a control unit is state to operate, while a discrimination circuit 51 detects a fact that it is in time of idling and stores an outside temperature detecting signal SS2 into a memory 52. Therefore, a signal a1 is formed but a signal a2 is not formed so that a desired temperature operation circuit 53 forms control signals b1-b3 and performs the specified control on the basis of the outside temperature signal a1, a room temperature signal SS1 and a setting temperature signal CS at a time when the switch 45 is in a state of being turned on. Next, when getting rid of idling time, the output signal a1 of the memory 52 is shut off and the signal a2 is formed instead, showing the outside temperature every moment. Accordingly, the circuit 53 forms control signals b1-b3 on the basis of these signals 2a, SS1 and CS change very moment, thus optimum control to the setting temperature is performable.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to an automatically controlled air conditioner, and particularly to an automatically controlled air conditioner for an automobile.

(Prior Art) Conventionally, an automatically controlled air conditioner is known that uses a temperature set by an operator using a setting switch or the like as a target value and performs calculations under various conditions such as room temperature and outside temperature to control the target value.

However, it is difficult to determine how to set various conditions that must be considered in order to reach the target value.2.There are also other points that need to be taken into consideration due to the special circumstances of automobiles, so it is not necessarily the best It cost ¥1t to say that good control had been achieved.

Furthermore, the above-mentioned conditions are affected by complex factors, and the results do not necessarily match the theory, making target value control difficult.

In particular, the outside air temperature sensor that detects the outside air temperature outside the vehicle interior sometimes detects a temperature higher than the actual outside air temperature due to the influence of heat radiation from the engine cooling system. In such a case, it cannot be said that target value control is being performed under correct conditions, and therefore optimal control is not being performed.

In order to eliminate this drawback, we made the outside temperature sensor's cover thicker and selected a material with poor thermal conductivity to make the sensor less sensitive, so that it would not be affected by the temperature rise caused by heat dissipation from the engine cooling system. There was something.

However, according to such a method, the sensor did not respond well, and optimum idle control could not be performed at times other than idling.

(Purpose of the Invention) The present invention has been made in an attempt to eliminate the above-mentioned drawbacks of the prior art. The purpose of the present invention is to provide an automatically controlled air conditioner capable of optimally controlling temperature.

(Structure of the Invention) In order to achieve this object, the present invention provides a detection means for detecting a physical environmental factor related to temperature and outputting it as an electrical signal, and a detecting means for detecting a physical environmental factor related to temperature and outputting it as an electric signal. an in-vehicle setting means that sends an electric signal according to the setting operation of operation 0 for setting, a drive device that drives an operating element related to temperature, an output signal of the detection means and the in-vehicle setting means, and a driving state of the drive device. In the automatic control air conditioner, the automatic control air conditioner includes an arithmetic and control device that performs calculations to create an optimal environment in the vehicle interior based on a signal indicating the calculation result, and sends a command signal to the drive device based on the calculation result, wherein the detection means It has an outside air condition detection sensor, and is activated when the ignition switch of the moving vehicle is turned on and the output of the sensor is immediately taken in as input data.

(Effects of the Invention) With the above configuration, according to the present invention,
It is possible to provide an automatically controlled air conditioner that has the following effects.

(11) Equipped with outside air condition detection sensors such as outside temperature sensor and outside air humidity sensor, and by reading the output signals of these sensors immediately when the ignition switch is turned on, the heat dissipation of the engine cooling system is reduced. Accurate input data of outside air conditions can be obtained immediately before any influence occurs.

(2) Each sensor has good responsiveness because its responsiveness is not sacrificed with a cover, etc. (combined with the effect of item 11), optimal control of the set temperature is possible in any case.

(3) In particular, since the vehicle speed sensor detects and controls whether or not the vehicle is idling, the control state during idling is excellent.

(4) Since the input data is retained for a certain period of time even after the ignition switch is turned off, even if the engine is stopped and restarted before it has completely cooled down, the input data to the arithmetic and control unit will provide accurate outside air conditions. obtained as.

(5) Since the detection of outside air conditions is accurate, reliable display of outside air temperature and outside air humidity is possible. This is expected to improve safety by allowing occupants to predict outside air conditions, and it can also be useful for health management as it is easy to set a guideline for temperature settings. That is, when the road surface is predicted to freeze based on the outside temperature display, operations such as reducing the vehicle speed and setting the cabin temperature so that the difference between the outside temperature and the outside temperature do not become too large are possible.

(Example of the invention) Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is System I showing an embodiment of the present invention.

According to the figure, the system is divided into an internal/external air mixer 10, a vehicle interior section 20, a drive device 30, a section 40 including some detection means and in-house setting means, and an arithmetic and control device 50.

The mixer 10 includes an outside air introduction duct IX, an inside air introduction duct 12, an inside/outside air switching door 13, a proa fan 14,
It includes an evaporator 15, an air mix door 16, and a heater core 17.

The outside air introduction duct 11 is a duct for introducing air outside the vehicle interior, and the inside air introduction duct 12 is a duct for reintroducing air inside the vehicle interior. Select whether to take in air from 12.

The proa fan 14 bends and sends out the air introduced from the ducts 11 and 12 in the direction of the vehicle interior 20. An evaporator 15 is disposed immediately after the proafan 14, and forms cool air or warm air depending on the direction in which the refrigerant is introduced.

The air mix door 16 is for appropriately mixing cold air or warm air from the evaporators 1 and 5 with warm air from the heater core 17, and the mixing ratio is determined by the opening degree of the door 16.

In this way, the optimum amount of air is sent into the vehicle interior 20 depending on the switching direction of the inside/outside air switching door 1-3, the rotational speed of the proa fan 14, and the state of the air mix door 16.

Each of these elements 13.14.168J is operated by a passenger or automatically, and [Claim J]
In and where necessary, the term “operating element” is used herein accordingly.
I beg you.

A room temperature sensor 2, which is one of the detection means, is installed in the vehicle interior part 20.
1 is provided and sends out a detection signal SSI corresponding to room temperature. A humidity sensor may be provided separately.

The drive device 30 includes the aforementioned temperature-related operating elements 13.1.
4.16, and includes a switching actuator 31, a motor control 1ij+/832, and an opening adjustment actuator 33. The switching actuator 31 switches the inside/outside air switching door I according to the Ih age signal CC1.
3 in a predetermined switching direction. The motor control circuit 32 determines the rotation speed of the proa fan 14 based on the command signal CC2. The opening adjustment actuator 33 determines the opening of the air mix door I6 based on the command signal CG3.

The portion 40 includes a detection means for detecting temperature-related physical environmental factors and outputting them as electrical signals, and an in-vehicle setting that sends out electrical signals in accordance with a setting operation by a passenger to set temperature-related physical environmental factors in the vehicle interior. and other means.

A vehicle speed sensor 43 is provided.

As the vehicle interior setting means, a temperature setting switch 44 for setting a desired vehicle interior temperature is provided.

Other means include the AD converter 42 and the ignition switch 45.

The outside temperature sensor 41 and the vehicle speed sensor 43 send out detection signals SS2 and SS3, respectively, the set temperature switch 44 sends out a set temperature signal C8, and the ignition switch 45 sends out a set temperature signal C8.
By switching to the on state, the ignition signal I
Send GN.

Note that in this specification, physical environmental factors related to temperature include not only temperature but also humidity,
This includes things such as the amount of solar radiation, and also includes vehicle speed factors that affect the temperature inside the vehicle.

The arithmetic and control unit 50 sends control command signals CCI, C・C2, and CC3 based on the signals SSI, SS2, SS3, O3, and IGN from each detection means, setting means, etc., and sends out control command signals CCI, C・C2, and CC3 into the vehicle interior. Create an i-environment.

The configuration of this arithmetic and control device 50 is as shown in FIG.

According to the figure, a determination circuit 51, a memory 52, a target temperature calculation circuit 53, a drive circuit 54, 55, a door opening degree calculation circuit 5
6, and a comparison circuit 57 are shown.

The determination circuit 51 receives a detection signal SS3 from the vehicle speed sensor 43.
Based on the outside temperature detection signal S from the outside temperature sensor 41
It determines where in the device 50 S2 is to be transferred, and is a so-called multi-h plexer. Here, the vehicle speed is “
0" and is in the rear wheel drive mode, the detection signal SS2 is read into the memory 52. However, there is a range of judgment when idling, and Q km/h ~ 10 k
Idling may be determined based on m/h. Furthermore, when the vehicle is not idling, the detection signal SS2 is transferred to the target temperature calculation circuit 53 as a transfer signal a2.

The memory 52 reads the outside temperature detection signal SS2 in response to the ignition signal IGN obtained by turning on the ignition switch 45, and sends this stored signal a1 to the target temperature/fJJ calculation circuit 53 as necessary. Therefore, first, the outside temperature is read into the memory 52 at the same time as the ignition signal IGN is generated, and air conditioning control is performed based on the output signal a1 of the memory 52 during idling. After exiting from idling, air conditioning is controlled by signal a2.

The target temperature calculation circuit 53 includes the determination circuit 51 or the memory 52.
Output signals b1, b2,
Form b3.

The signal unit 1 generates a command signal υCC1 via the drive circuit 54 to operate the switching actuator 31 in a desired opening direction.

Signal b2 is passed through drive circuit 55 to form command signal CC2, which causes motor control circuit 32 to operate to provide a desired rotational speed signal.

The signal b3 is input to the door opening degree calculation circuit 1/85 G and forms an at-door opening degree signal DSO indicating how much the door opening degree should be. This door opening degree signal DSO is converted into a door opening degree detection signal DSI from a door opening degree sensor (not shown) in a comparison circuit 57.
The command signal cc3 is sent out. That is, (F
4'+81',) The command signal CC3 is sent out until S1 matches the signal DSO, and the opening adjustment actuator 33 is operated.

Next, the operation of this embodiment will be explained.

When the ignition switch 45 is turned on, the entire control device is activated, and the determination circuit 51 detects that the vehicle is idling and reads the outside temperature detection signal SS2 into the memory 52.

Therefore, the signal a1 is formed, but the signal a2 is not formed.

Therefore, the target temperature calculation circuit 53 forms control signals b1 to b3 based on the outside temperature signal al, the room temperature signal S31, and the set temperature signal CS when the ignition switch 45 is turned on, and achieves predetermined control. do.

When the idling state is exited, the output signal a1 of the memory 52
is interrupted and a signal a2 is formed.

This signal a2 is a momentary outside temperature signal.

Therefore, the target temperature calculation circuit 53 forms control signals b1 to b3 based on the momentary outside temperature signal a2, room temperature signal 5SI-, and set temperature signal CS to achieve predetermined control.

According to this embodiment, the memory 52 includes a timer, and is designed to retain data for a certain period of time even after the ignition switch 45 is turned off.

The flowchart in Figure 3 shows the main points of the above operation, where Ta is the outside temperature, E'aO is the η1 period outside temperature, A, B
indicates the initial constant.

This invention is not limited to the above embodiments, but includes various modifications within the scope of the invention.

For example, in the above embodiment, only temperature is detected;
Humidity may be added as a factor in the detection Lrcljq calculation.

[Brief explanation of the drawing]

Fig. 1 is a system diagram showing an embodiment of this invention, and Fig. 2 is a system diagram showing an embodiment of the present invention.
FIG. 3 is a system diagram showing the main parts of the embodiment shown in the figure, and does not show the operation of the embodiment of the present invention. 10... mixer, 13.14.16... operating means, 20... vehicle interior, 30... drive device, 21.
41.43...Detection means, 44...In-vehicle setting means,
45... Ignition switch, 50... Arithmetic control device. Patent applicant: Nissan Shatai Co., Ltd. Sub-agent Patent attorney: Hiroyuki Fujiwara

Claims (1)

[Scope of Claims] (1) Detection means for detecting temperature-related physical environmental factors and outputting them as electrical signals; An in-vehicle setting means for sending signals, a drive device for driving operating elements related to temperature, and an optimum environment for the car based on output signals of the detection means and the in-vehicle setting means and a signal indicating the driving state of the drive device. In the automatic control air conditioner, the detecting means has an outside air condition detection sensor, and the detecting means has an outside air condition detection sensor, and the detecting means has an outside air condition detection sensor, An automatically controlled air conditioner characterized in that the control device is activated when the ignition switch of the automobile is turned on and immediately reads the output signal of the sensor as input data. An automatically controlled air conditioner characterized by: (3) Claim 1 is an automatically controlled air conditioner according to claim 2, wherein the in-vehicle setting means is a set temperature switch for setting the temperature inside the vehicle. (4) In the device according to any one of claims 1 to 3, the operating element includes an inside/outside air switching door;
In the blower motor and air exhaust, the detection means includes a vehicle speed sensor, and the arithmetic and control unit determines from the output signal of the vehicle speed sensor that the engine is in an idling state, and converts the input data input when the engine is started in the on state to the current state. An automatically controlled air conditioner characterized by using calculated data. (6) In the device according to any one of claims 1 to 5, the arithmetic and control device may be used to
An automatically controlled air conditioner characterized in that input data is held for a certain period of time after the ignition switch is turned off.