JPS6357313A - Arrangement for controlling desired temperature of blow-off air for automatic air-conditioning device - Google Patents

Abstract

PURPOSE:To eliminate uncomfortability caused by abrupt variation in the temperature of blow-off air, by chronographically changing the desired temperature of blow-off air with a minute variation when the set temperature is changed into a normal temperature range by means of a maximum or minimum temperature setting section. CONSTITUTION:A computing control device 27 is provided therein with a temperature setting and indicating section 1, a circuit for computing a desired room temperature in accordance with signals delivered from an outside air temperature sensor 29 and a solar radiation sensor 30 and a circuit 33 for computing a temperature difference between the desired room temperature and a detected room temperature delivered from a room temperature sensor 32. Further, in the output stage of the circuit 33, there are provided a desired blower motor voltage computing circuit 35 for computing a desired blower voltage in accordance with an engine cooling water temperature delivered from a water temperature sensor 34 and the above- mentioned temperature difference and for delivering the result of the computation to a blower motor voltage computing circuit 12, and a desired blow-off air temperature computing circuit 36. Further, in the output stage of the circuit 36, there is provided a transient control circuit 37 for chronographically changing the desired blow-off air temperature with a minute variation.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention provides a method for controlling sudden blowout temperature for exterminating insects by changing the setting means provided in an air conditioner from the maximum temperature setting section or the minimum temperature setting section to the normal control range. The present invention relates to a target outlet temperature control structure for an automatically controlled air conditioner that suppresses changes in temperature.

Conventional technology Conventionally, automatically controlled air conditioners installed in automobiles have a fourth
A set temperature display section 1 as shown in the figure is provided (
"N-Ko S BAN Service Bulletin" No. 489, September 1989, p. -74). This temperature setting display section 1 is divided into equal steps of 1°C from 35°C to 15°C, including normal control range 2 and temperatures exceeding the upper and lower limits of normal control range 2 by 5°C (40°C).

Full Cool 3 and Full Hot 4 are set at 10°C). In such a structure, when the air conditioner body suddenly increases or decreases the temperature inside the vehicle,
Select level Full Cool 3 or Full Hot 4 to supply a large amount of low-cooled air or high-temperature air into the vehicle interior. After the interior of the vehicle has been appropriately cooled or heated, the normal control area 2
Select a desired value for the outlet air temperature and maintain this value asymptotically.

The air volume is controlled.

Problems to be Solved by the Invention However, as mentioned above, the Full Cool 3 and Full Hot 4 are used emergently at the initial stage of the main unit, and depending on the laws and regulations of other countries, there are minimum restrictions regarding the 9-force ability. Considering that the maximum temperature condition is determined and it is necessary to satisfy this condition, the temperature is set to a value that greatly exceeds the upper and lower limits of the normal control range 2. Therefore, for example, after the interior of the vehicle is sufficiently cooled when the main unit is set to Full Cool 3, if the temperature is set to a higher temperature (15°C) by that level, there will be a large difference between the temperature set at Full Cool 3 (10'C). A temperature difference (5°C) occurs. As a result, a sudden temperature difference occurred in the temperature of the blowing air, which changed according to the set temperature, and the occupants, who were experiencing the lowest blowing temperature at full cool 3, were momentarily blown out with warm air. There was a risk that this would create an illusory discomfort.

The present invention has been made in view of these conventional problems, and solves the above problems by controlling the temperature of the blowing air so that it gradually changes when the setting is changed from full cool or full pot to the normal control range. The present invention provides a target outlet temperature control structure for an automatically controlled air conditioner that solves the above problems.

Means to solve problems In order to solve the above-mentioned problems, the present invention has the following features.

The setting means that sends an electric signal according to the setting operation by the occupant has a normal control area set in approximately isothermal stages, a maximum temperature setting part and a minimum temperature setting part set to a value that exceeds the upper and lower limits of the normal control area by a predetermined temperature. The arithmetic and control device has a temperature setting section (hereinafter referred to as full hot and full cool, respectively) and calculates a target outlet air temperature 8y4 of the air conditioner main body in order to create an optimal environment based on the output signal of the setting means, etc. When the setting means is set from full hot or full cool to the normal control range, a transient control circuit is provided that changes the target outlet air temperature over time by a minute amount of change, and the target outlet air temperature is changed by the output signal of the transient control circuit. The temperature is changed gradually.

Effect In the above configuration, when the air conditioner main body is set to, for example, full cool, the arithmetic and control device calculates and outputs a low value target outlet air temperature based on the signal output from the setting means, and In this case, low-temperature air is blown into a single room. After the interior of the vehicle has been sufficiently cooled, when the setting is changed from full cool to the normal control range, the arithmetic and control unit calculates the target outlet air temperature based on the set temperature within the new normal control range. At the same time, the transient control circuit operates and changes the target outlet air temperature by a small amount of change over time. Therefore, the outlet air temperature at full cool is newly set while gradually changing slightly.1 Normal control This converges to the target outlet air temperature that corresponds to the set temperature within the area.

Example An embodiment of the present invention will be described below with reference to the drawings.

That is, as shown in FIG. 2, the air conditioner main body 5 includes the blower unit 6, which is configured by sequentially connecting a blower unit 6, a cooling unit 7, and a heater unit 8.
Inside, there is an inside air intake port 9 and an outside air intake port 10. This binocular inlet 9.1 (H) is provided with an intake door 11 that opens and closes and a proar 13 that is controlled by a proa motor voltage control circuit 12. An evaporator 14 of a vapor compression refrigeration cycle is housed in the cooling unit 7. Two heater cores 15 are arranged in the heater unit 8, and a heater core 15 is disposed in the heater unit 8, which is used as a heat source for the engine cooling water 8 of the automobile in which the air conditioner body 5 is mounted.
Air mix doors t6゜17, 18 are pivotally supported on the ventilation surface.
8 is linked to a blowout air temperature control actuator 19 which is a driving means. Also, on the peripheral wall of the heater unit 8, there is a defroster duct 20 that communicates with an air outlet (not shown) provided inside the vehicle interior. Ventilator duct 21, hood duct 22
A defroster door 23. is formed at the base end of each duct 20, 21, 22. Beftilator door 24
．． A foot door 25 is pivotally supported, and a sub-defroster door 26 is provided below the defroster door 4. On the other hand, as shown in FIG. 1, the arithmetic and control device 27 includes a target room temperature calculation circuit that calculates the target room temperature T8° based on input signals from the temperature setting display section 1, the outside temperature sensor 29, and the solar radiation sensor 30, which are setting means. 31. A temperature difference calculation circuit 33 is provided for calculating the temperature difference (Tso-ter) between the target room temperature T51o and the room temperature Tr detected by the room temperature cm 32.

The output stage between the temperature difference calculation circuit is connected to the engine coolant temperature TV detected by the water temperature sensor and the temperature difference c.
The target blower voltage vM is based on
A target blower motor voltage calculation circuit 35 and a target blowing air temperature calculation circuit 36 are provided for calculating o and outputting the calculation results to the blower motor voltage control circuit 12. The target outlet air temperature calculation circuit 36 calculates the temperature difference Tgo −T
Target outlet air temperature based on r? (The machine that calculates 10 and controls the blowout air temperature control actuator 19!!
have.

When a setting change output signal from Full Cool 3 or Full Hot 4 to Normal Control Area 2 is sent to the output stage of this target outlet air temperature calculation circuit 36 in the temperature setting display section 1 shown in FIG. A transient control circuit 37 is provided which changes the target outlet air temperature Tat over time by a small amount of change within a predetermined time t0 and outputs a corresponding control signal to the outlet air temperature control actuator 19.

Next, regarding the operation of this embodiment according to the above configuration, FIG.
This will be explained according to the flowchart shown above.

That is, when the air conditioning switch (not shown) is turned on, the arithmetic and control device 27 is started together with the air conditioning device main body 5, and the outside temperature T
As for solar radiation! kWcm Vehicle interior temperature! fTre set temperature T8
．． The engine coolant temperature Tw is read (step ■
). Then, in the next step (■), the set temperature T8 is set to the full cool 3 position on the temperature setting display section 1, that is, the lowest set temperature T.
It is determined whether or not it is set to 8 MIN, and this determination is
If it is O, it is further determined whether or not the set temperature Ts is set at the full hot 4 position, that is, the highest set temperature TBMAX (step 2). Therefore step ■
, @ are both NO, the set temperature T8 is set in the normal control range 2゛), so the target room temperature τ(
ill a Target blower motor voltage VM (1, target blowing air temperature '1' (16) are calculated (steps ■, ■), and normal control is performed based on these values (step ■)
, On the other hand, if the determination in step ■ is YK8 and full cool 3 is set at the time of the main unit, the target room temperature 'ro
e is the minimum target room temperature T, and target blower motor voltage vM is the maximum blower motor voltage vMMA3C.
In addition, the target outlet air temperature Td0 is the lowest outlet air temperature T (LMIN
are set respectively (steps ■, ■), and therefore a large amount of minimum temperature and cold air is fed into the vehicle interior. During this time Ta, Zas
Changes in TrsT,, TW are read sequentially (step ■
), T6 = TsM engineering N (step [phase]) is Y] n8
, that is, while the Chiffle Cool 3 continues to be set, the loop from Steps ① to [Phase] is repeated, and the interior of the vehicle is rapidly cooled by a large amount of cold air with the lowest temperature. Then, in order to perform steady cooling after the interior of the vehicle is rapidly cooled, the occupant changes the setting from full cool 3 to the desired temperature T, -1 in normal control range 2, the determination in step [phase] becomes NO, and the determination in step 0 becomes The process is started and the blower motor voltage vy
10 is the maximum blower motor voltage V at full cool 3 setting
The target blower motor voltage VM0- at the newly set temperature MAX τs-1 changes rapidly from A target outlet air temperature Td6-1 at the set temperature Tl1-1 is calculated.

However, at this time, the transient control circuit 37 operates simultaneously, and based on the setting change output signal from the temperature setting display section 1, ~"dM
The change characteristics from Tdo-1 to Tdo-1 at time k (middle 5 to 10
811IC), the output air temperature is changed over time with a small amount of change proportional to time t, and outputted to the blowout air temperature control actuator 19. Therefore, the blowout air temperature control actuator 19 is activated at time t. Inside, the transient control circuit 3
According to the output signal from 7, the air mix doors 16, 17, 18 are slowly driven in the direction of increasing the amount of air passing through the heater core, and the temperature of the blown air gradually increases. Therefore, when the main unit is set to Full Cool 3 and the inside of the car is sufficiently cooled, when the temperature is set to a higher temperature (15°C) by that level, the temperature of the blowing air will be at time t. (lowest blowout at full cool)
The occupants, who were experiencing the locust temperature, gradually adapted to the changing temperature of the blowing air. Therefore, the occupants are unable to sensitively detect changes in the temperature of the outlet air, and when changing the setting from full cool 3 to normal control range 2, the occupants are given the illusion that warm air is being blown out instantaneously due to the sudden rise in the temperature of the outlet air. The discomfort will be resolved.

On the other hand, if the determination in step (2) is No and the determination in step (2) is YES, that is, if full hot 4 is set at the time of the main body, the target room temperature T. is the highest target car @Ts at full hot. MAX, and the target blower motor voltage VMo is the maximum blower motor voltage vMMAX,
Target outlet air temperature T (10 is the maximum outlet temperature TdoMAY
(Step IIO, Q3).

Therefore, a large amount of maximum temperature air is fed into the vehicle interior.

Changes in Ta ezo and Tr sT8 eTW during this time are successively read (step ■), and the loop of steps @ to @ is repeated while full hot 4 continues to be set. After the interior of the vehicle is heated, the occupants can adjust the desired temperature T from full hot 4 to normal control range 2.
8-! When set to , the determination in step Q becomes No, the process in step [phase] is started, and the target blower motor voltage vM0 is changed from the maximum blower motor voltage vMMAX when the full hot 4 is set to the newly set temperature 'r8-t.
The target blower motor voltage VM0- suddenly changes to VM0-. At the same time, the target outlet air temperature Tdo is set to full hot 4.
The blowing air temperature TdMAX at the time of setting changes to the target blowing air temperature Td at the newly set temperature 'I's-t. However, at this time, the change characteristic from TdM engineering N to Tdo-1 was proportional to time t during to (middle 5 to 10 (8)) due to the aforementioned full cool 3 setting and the output signal of the transient control circuit 37. It changes over time with a small amount of change. Therefore, the blowout air temperature control actuator 19 controls the air mix doors 16 and 17 within the time to.
, 18 are slowly driven in a direction in which the number of air holes passing through the heater tip 15 decreases, and the temperature of the blown air gradually decreases. Therefore, the occupants who experienced the highest outlet temperature at full hot 4 setting,
It is possible to adapt to the temperature of the blowing air that gradually decreases, and when changing the setting from full hot 4 to normal control range 2, the discomfort caused by the illusion that cold air is suddenly blown out due to a sudden change in the blowing temperature is eliminated. It is.

As described in detail, the present invention provides setting means for setting the maximum temperature f.
3 (Full Hot) or the lowest temperature setting section (Full Cool) to the temperature within the normal control range, the target outlet air temperature is changed over time with a small amount of change. The actual blowing air temperature that is controlled according to the change gradually changes by a small amount of change, and then is maintained at the target blowing air temperature after the setting change. Therefore, when changing the air temperature setting, the occupants are able to adapt to the gradually changing air temperature without being sensitive to changes in the air temperature. When changing the setting from the normal control range to the normal control range, you may feel as if warm air is being blown out instantaneously due to a sudden rise in the temperature of the blowing air.
Conversely, when changing the setting from the maximum temperature setting section to the normal control range,
This eliminates the illusion that cold air is instantaneously blown out due to a sudden drop in the blowout temperature, and eliminates the discomfort caused by sudden changes in the temperature of the blowout air.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is a conceptual diagram showing the main body of an air conditioner according to the same embodiment, and FIG. 3 is a block diagram showing an embodiment of the present invention.
A flowchart showing the operation of the same embodiment, and FIG. 4 is an explanatory diagram of the temperature setting display section. 1...Temperature setting display section (setting means), 2...Normal control range, 3...Full cool (minimum set temperature), 4...
Full hot (maximum set temperature), 5... air conditioner body,
19... Blowout temperature control actuator (driving means),
27... Arithmetic control device, 37... Transient control circuit.

Claims (1)

[Claims] (1) A setting means that sends an electric signal according to the setting operation by the occupant to set physical environmental factors in the vehicle interior related to temperature, and a drive that drives operating elements related to the temperature of the air blown from the air conditioner main body. and an arithmetic and control device that calculates a target outlet air temperature based on the output signal of the setting means to create an optimal environment in the vehicle interior, and sends a command signal to the drive device based on the calculation result. In the automatic control air conditioner, the setting means includes a normal control area that is divided into approximately isothermal stages, and a maximum temperature setting section and a minimum temperature setting section that are set to a value that exceeds the upper and lower limit values of the normal control area. In addition, the arithmetic and control device changes the target outlet air temperature over time by a small amount of change based on a setting change output signal from each of the maximum and minimum temperature setting sections of the setting means to the normal control range. A target outlet air temperature control structure for an automatically controlled air conditioner, characterized by comprising a transient control circuit for controlling the air temperature.