JPH0556512U - Heater unit for automobile air conditioner - Google Patents

Abstract

(57) [Summary] (Corrected) [Purpose] Perform warm-up and cool-down in a short time, and work such as program setting and change in a short time and easily. A mix door 4 for adjusting the ratio of the amount of air passing through a heater core 2 in which engine cooling water circulates and a bypass 3 is rotatably provided on the upstream side of the heater core, and on the downstream side of the heater core of the heater unit case 1. A heater unit of an automobile air conditioner having a plurality of outlets 6 to 8 opened in a mixing chamber 5, the mix door driving means 9 for rotating the mix door at a predetermined speed and direction, and a desired temperature. The temperature setting device 10 to be selected, the room temperature sensor 11 for detecting the temperature inside the vehicle, the temperature difference calculating means 12 for calculating the temperature difference between the temperature data obtained from the temperature setting device and the room temperature sensor, and the temperature difference calculating means. It has fuzzy inference means 13 for inferring the operating speed and the rotation direction of the mix door drive means from the fuzzy control law preset by the obtained temperature difference data.

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The present invention relates to an air conditioner for an automobile, in particular, it can perform warm-up and cool-down in a short time, and can easily perform work such as program setting and changing.

[0002]

[Prior Art]

 In automobile air conditioners in recent years, an auto air conditioner has been widely used for the purpose of improving safety. With conventional auto air conditioners, the occupant simply indicates the desired set temperature, and automatically adjusts the temperature of the conditioned air, the operation and stop of the compressor, the setting of the blowing mode of the control door, the selection of the inside and outside air, and the switching of the air volume Is supposed to do. Such control is performed by incorporating the input signals from various sensors provided at a predetermined position of an automobile, an air conditioner, etc., into the control means, so that the control means is operated in accordance with a predetermined criterion. It is configured.

For example, the control of the blown air temperature will be described. As shown in FIG. 15, as a group of sensors, a temperature setter 30, an outside air temperature sensor 31, a solar radiation sensor 32, a room temperature sensor 33, an outlet temperature sensor 34, and a door. It has an opening degree detection means 35. The temperature setter 30 is provided on the indoor control panel so that the occupant can select a desired temperature, and the outside air temperature sensor 31 is attached outside the room, for example, around the front grill to detect the outside air temperature. Further, the solar radiation sensor 32 is provided on the upper surface of the instrument panel in the room and detects the amount of solar radiation entering the room. On the other hand, the room temperature sensor 33 is provided on the front surface of the instrument panel or the like to detect the current room temperature, and the blowout temperature sensor 34 detects the air temperature immediately after the evaporator. Further, the door opening detection means 35 is composed of, for example, a PBR or the like that detects the current opening degree of the mix door. After the information from these sensor groups is taken in by the control means 36, arithmetic processing is performed according to the control procedure shown in FIG. 16, the obtained arithmetic result is output to the mix door actuator 37, and the mix door is specified. Operate in the direction and opening.

Specifically, as shown in FIG. 15, the current opening degree of the mixed door is detected from the door opening degree detection means 35, and this information is taken into the control means 36 (step 1). In the case of B / L, after correcting to X = X + 0.08 (steps 2 and 3), the calculation formula S = (A + D) T _PTC + BT _AMB + CQ _SUN- DT _INC + E- (FX + G) (82-T _INT )- The S value is calculated according to T _INT (1) (step 4). In the equation (1), A, B, C, D, E, F, and G are correction constants peculiar to the vehicle equipped with the air conditioner, and are predetermined values for each vehicle. Further, T _PTC is a set temperature selected by the occupant, T _AMB is an outside air temperature, Q _SUN is a solar radiation amount, T _INC is an indoor temperature, and T _INT is an outlet temperature. By comparing the S value thus obtained with the reference value (step 5), for example, if S <-2, the mix door is turned to the COLD side (step 6), and if S> 2, Rotate the mix door to the HOT side (step 8). If -2 ≦ S 2 ≦ 2, the mick door is maintained at the same position (step 7). As a result, in consideration of the current indoor temperature with respect to the set temperature, the air having the temperature that reaches the set temperature in a short time is blown out.

The automatic selection control of the blowing mode of the control door including the vent door, the differential door, and the foot door is performed as shown in FIGS. 17 and 18. That is, similar to the control of the blown air temperature, each information is taken into the control means 36 from the sensor group including the temperature setter 30, the outside air temperature sensor 31, the solar radiation sensor 32, the room temperature sensor 33, and the blowout temperature sensor 34. The calculation result is output to the mode actuator 38 that drives the control door.

Specifically, as shown in FIG. 18, first, the current amount of solar radiation is input to the control means 36 (step 1), and constants H, I, J, which are predetermined according to the magnitude of the amount of solar radiation are input. A combination of K is selected (steps 3 and 4). Then, based on the information obtained from the sensor group, similarly to the control of the blown air temperature described above, the arithmetic expression: S = (A + D) T _PTC + BT _AMB + CQ _SUN- DT _INC + E- (FX + G) (82-T _INT ) -T _INT (1) is used to calculate the S value, and the S value and the arithmetic expression Xm = (FX + G) (82-T _INT ) + T _INT + S (2) are used to obtain the Xm value (step 5). The blowout mode is determined by the Xm value thus obtained and the constants H to K described above, and the mode actuator 38 is operated (step 6). As a result, the optimum blowout mode can be automatically selected in consideration of the current indoor temperature with respect to the set temperature.

[0007]

[Problems to be solved by the device]

 However, in the conventional auto air conditioner, the calculation formula (1) is used for the control of the blowout air temperature, and the calculation formula (2) is used for the control of the blowout mode. There was a limit when trying to shorten the time. That is, in the initial stage of warm-up and cool-down, rapid temperature control is performed to bring the temperature close to the set temperature in the shortest time, and when approaching the set temperature to some extent, the control is gradually relaxed and controlled to reach the set temperature without feeling strange. However, it is difficult to perform the non-linear control suitable for such an indoor condition when the judgment is made by one temperature control method.

Although it has been attempted to control using a plurality of temperature control formulas, the control becomes complicated and it takes a long time for fine adjustment work such as determination of a constant.

Further, even one temperature control formula has complicated contents, so that it requires skill to understand the arithmetic formula, and it is difficult to ensure the accuracy of the program work. In addition, if partial fine adjustment is performed, it is necessary to finely adjust the entire arithmetic expression, and it takes a long time to program the constants set for each vehicle.

The present invention has been made in view of the above-mentioned problems of the conventional technique, and can perform warm-up and cool-down in a short time, and can perform work such as program setting and change in a short time. It is an object of the present invention to provide a heater unit for an automobile air conditioner that can be easily and easily operated.

[0011]

[Means for Solving the Problems]

 The present invention for achieving the above object provides a heater core in which a cooling water for engine is circulated in a heater unit case, and a detour path in which the intake air flowing down into the heater unit case bypasses the heater core is provided in the heater unit case. And a mixing chamber for adjusting the ratio of the amount of air passing through the heater core and the bypass passage, which is rotatably provided on the upstream side of the heater core and formed on the downstream side of the heater core of the heater unit case. In a heater unit of an air conditioner for an automobile having a plurality of air outlets provided in the air conditioner, a mix door driving means for rotating the mix door at a predetermined speed and direction, and a temperature setter for selecting a desired temperature. , A room temperature sensor that detects the temperature inside the passenger compartment, and the temperature data obtained from these temperature setters and room temperature sensors. Temperature difference calculating means for calculating the temperature, and fuzzy inference means for inferring the operating speed and the rotating direction of the mix door driving means from the fuzzy control law preset by the temperature difference data obtained by the temperature difference calculating means. A heater unit for an air conditioner for an automobile, comprising:

In addition, a heater core in which engine cooling water circulates is provided in the heater unit case, and a detour path is formed in the heater unit case so that intake air flowing down into the heater unit case bypasses the heater core. A mix door that adjusts the ratio of the amount of air passing through the bypass and the detour is rotatably provided upstream of the heater core, and a plurality of outlets are provided in a mixing chamber formed downstream of the heater core of the heater unit case. In a heater unit for an air conditioner for an automobile, which is opened, a control door is provided at each of the outlets so as to be openable and closable, and a plurality of types of blowout modes are configured by combining opening and closing positions of the plurality of control doors. A mode door driving means for selecting an opening / closing position of the plurality of control doors, and a rotation of the mix door. It has a mix door position detecting means for detecting a position, and a fuzzy inference means for inferring an operating position of the mode door driving means from a fuzzy control law preset by the position data obtained by the mix door position detecting means. The above object can also be achieved by a heater unit of an air conditioner for an automobile having the above characteristics.

[0013]

[Action]

 In the first invention, based on the temperature data obtained from the temperature setter and the room temperature sensor, the temperature difference calculation means first calculates the difference temperature, and the fuzzy reasoning means is preset based on this difference temperature. The fuzzy control law is used to infer the operating speed and rotation direction of the mixed door driving means.

In the second invention, the operating position of the mode door driving means is inferred from the fuzzy control law preset in the fuzzy inference means based on the position data obtained by the mix door position detecting means.

The fuzzy control law has a fuzzy rule that is a set of rules that defines a control method and a membership function that expresses an ambiguity. The fuzzy rule expresses the basic know-how necessary for control. On the other hand, the membership function is used to treat inference results as concrete numerical values.

In the first invention, the temperature difference calculated by the temperature difference calculating means is expressed in an ambiguous amount by using the membership function (FIGS. 2 and 7), and this is expressed before the fuzzy rule (FIG. 3). The result of the consequent part is applied to the condition part, and the result expressed by this ambiguity is used by the membership function (Figs. 4 and 5) to output the operating speed of the mixing door drive means and the output value in the rotating direction. Convert to.

Further, in the second invention, the position data obtained by the mix door position detecting means is expressed in an ambiguous amount by using the membership function (FIG. 12), and this is expressed by the fuzzy rule (FIG. 13). The result of the consequent part is applied to the antecedent part, and the result expressed by the ambiguity is converted into the output value of the operation position of the mode door driving means by using the membership function (Fig. 14).

[0018]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing a heater unit of an automobile air conditioner according to an embodiment of the present invention, FIG. 2 is a diagram showing a membership function related to an antecedent variable of the embodiment, and FIG. 3 is the same embodiment. Showing fuzzy rules stored in the fuzzy inference means of FIG. 4, FIG. 4 is a diagram showing membership functions relating to consequent variables of the same embodiment, and FIG. 5 is membership relating to consequent variables of the same embodiment. FIG. 6 is a graph showing the function, and FIG. 6 is a graph showing the correction contents of the temperature difference due to the outside air temperature and the amount of solar radiation in the same embodiment.

The present embodiment is a heater unit configured to control the temperature of blown air by using fuzzy control. First, the configuration will be described with reference to FIG. 1. In the heater unit case 1, a heater core 2 for circulating engine cooling water to heat air is installed, and the heater core 2 is installed near the heater core 2. A bypass 3 is formed in which air bypasses the heater core and reaches the mixing chamber 5. A mix door 4 is rotatably provided on the upstream side of the heater core 2 for adjusting the ratio of the amount of air passing through the heater core 2 to the amount of air passing through the bypass 3. The mix door 4 is rotated by a mix door actuator 9 (mix door driving means) such as an electric actuator. As a result, the warm air heated by passing through the heater core 2 and the unheated cold air passing through the bypass 3 flow down into the mixing chamber 5 formed downstream of the heater core 2 of the heater unit case 1. Therefore, after the two are mixed and mixed at an appropriate temperature, the mixture is discharged from any one of the differential air outlet 6, the vent air outlet 7, and the foot air outlet 8 provided in the mixing chamber 5. It is supplied in the passenger compartment. Here, the differential air outlet 6 is an outlet for guiding warm air to the inner surface of the windshield to remove the fogging of the glass, and the vent outlet 7 blows conditioned air to the upper half of the occupant to control the temperature in the room. It is an outlet for. Further, the foot outlet 8 is an outlet mainly for guiding the warm air to the feet of the occupant to enhance the heating feeling of the occupant. A differential door 6D, a vent door 7D and a foot door 8D are rotatably provided at these outlets 6, 7 and 8, respectively, and can be operated by a manual operation using a control cable or an automatic operation using an electric actuator. It is the door opening.

An intake unit 17 that selectively takes in outside air or inside air is provided upstream of the heater unit 1 according to the present embodiment, and has a fan 19 that is rotated at a predetermined speed by a motor 18. There is. Further, a cooler unit 21 in which an evaporator 20 constituting a cooling cycle is installed is connected between the intake unit 17 and the heater unit 1, and when the compressor is activated by inputting an air conditioner switch, the refrigerant is evaporated. Circulate in 20 to cool the intake air. However, the cooler unit 21 is not essential in the present invention, and the intake unit 17 and the heater unit 1 may be directly connected.

The heater unit 1 of this embodiment has a temperature setter 10, a room temperature sensor 11, an outside air temperature sensor 22, and a solar radiation sensor 23 as a sensor group 24. The temperature setter 10 is provided on a control panel in the room so that an occupant can select a desired temperature, and the room temperature sensor 11 is provided on the front surface of the instrument panel or the like to detect the current room temperature. Further, the outside air temperature sensor 22 is mounted outside the room, for example, around the front grill to detect the outside air temperature, and the solar radiation sensor 23 is provided on the upper surface of the instrument panel in the room to detect the amount of solar radiation incident on the room.

Further, in the present embodiment, among the various sensors forming the sensor group 24, temperature data from the temperature setter 10 and the room temperature sensor 11 is taken in, and a temperature difference calculation means for calculating the temperature difference between the two. The temperature difference signal x ₁ is output to the fuzzy inference means 13 by calculating (room temperature)-(set temperature). At this time, in the present embodiment, the correction means 25 is provided so as to correct this temperature difference depending on the outside air temperature and the amount of solar radiation. That is, as shown in FIG. 6 (A), when the outside air temperature is below freezing, 3 degrees is added to the temperature difference obtained by the temperature difference calculating means 12, and when the outside air temperature is 10 ° C. or higher, it is 2 degrees. to add. When the outside air temperature is 0 to 10 ° C, the linearly converted temperature is added as shown in the figure. Furthermore, it is preferable to correct the temperature difference depending on the amount of solar radiation. For example, as shown in FIG. 6B, the solar radiation amount 660 kcal is added to the temperature difference obtained by the temperature difference calculating means 12 at a rate of 1 degree. As a result, a substantial temperature difference that is different from the difference between the mere set temperature and the room temperature can be realized, and a temperature control environment closer to the occupant's sensitivity can be obtained. In the present invention, the correction means 25 can be omitted.

On the other hand, the fuzzy inference means 13 of this embodiment is an A / D converter for converting the analog signal of the temperature difference signal x ₁ from the temperature difference calculating means 12 into a digital signal of 2 to 8 bits. , A ROM for storing a membership function for fuzzy inference, a fuzzy inference unit for storing fuzzy inference logic, and an arithmetic unit for calculating an operation speed and a rotation direction and outputting them to the signal synthesizing means 26. Has been done.

In the fuzzy inference means 13, the operating speed and the rotating direction of the mix door 4 are determined by fuzzy inference, and these manipulated variables have a certainty obtained from each control law stored in the ROM in advance. Value (CF value). That is, FIG. 2 is a membership function relating to the antecedent variable, in which the horizontal axis represents the temperature difference signal x ₁ output from the temperature difference calculating means 12, and the vertical axis represents the corresponding CF value. . At this time, when the CF value is represented by a concept including fuzzy labels, that is, ambiguity, when the temperature difference is +1 degree or more, it is “hot (VH)”, 0 to +3 degrees is “slightly hot (MH)”, −1. +1 degree is "comfortable (GD)", 0--1 degree is "slightly cold (MC)", and -1 degree or less is "cold (VC)". On the other hand, FIG. 4 is a membership function relating to the consequent variable, in which the voltage applied to the mix door actuator 9 is shown on the horizontal axis and the CF value of the operating speed of the mix door 4 is shown on the vertical axis. Further, FIG. 5 also shows a membership function related to the consequent variables, in which the horizontal axis represents the voltage value of the output signal that determines the rotational direction of the mixed door actuator 9, and the CF value in the rotational direction corresponding to the voltage value. It is shown on the vertical axis.

Further, FIG. 3 shows fuzzy rules stored in the fuzzy inference unit, and these control rules are qualitatively explained by a language. That is, if the temperature difference signal x ₁ is VC (cold), the operation speed of the mix door is set to FS (high speed) and the rotation direction is set to CW (HOT side). Similarly, if the temperature difference signal x ₁ is MC (slightly cold), the operation speed of the mix door is SL (low speed) and the rotation direction is CW (HOT side). If the temperature difference signal x ₁ is GD (comfortable), the operating speed of the mix door is set to SL (low speed), and the rotation of the mix door is set to ST (stop). If the temperature difference signal x ₁ is MH (slightly hot), the operation speed of the mix door is SL (low speed) and the rotation direction is CCW (COLD side). If the temperature difference signal x ₁ is VH (hot), the operation speed of the mix door is set to FS (high speed) and the rotation direction is set to CCW (COLD side).

Then, fuzzy inference is performed by the membership function shown in FIG. 2 and the fuzzy rule shown in FIG. First, the input function is used to find the value of the membership function of the antecedent part for each rule. From this result, the form of the membership function of the consequent part is modified. The output value used for control is obtained by integrating the form of the membership function obtained for each rule. The operation of obtaining this output value is called defuzzifier processing. The most commonly used method is to create a figure by superimposing all of the obtained membership function shapes of the consequent part, and then use the horizontal axis of the barycentric position. This is the so-called barycentric method in which coordinates are obtained and these are used as output values for fuzzy reasoning.

The control law stored in the fuzzy inference means is not limited to the above-mentioned embodiment, but can be modified in various ways. 7 is a diagram showing a membership function relating to an antecedent variable of another embodiment of the present invention, FIG. 8 is a diagram showing a fuzzy rule stored in the fuzzy inference means of the embodiment, and FIG. 9 is the same implementation. FIG. 10 is a diagram showing a membership function relating to a consequent variable of the example, and FIG. 10 is a diagram showing a membership function relating to a consequent variable of the same example.

In the present embodiment, the CF values determined by the temperature difference data obtained from the temperature difference calculation means 12 are further classified. That is, as shown in FIG. 7, when the temperature difference is +3 degrees or more, the temperature is “pretty hot”, +1 to +5 degrees is “hot (VH)”, 0 to +3 degrees is “slightly hot (MH)”, − 1 to +1 degree is "comfort (GD)", 0 to -1 degree is "slightly cold (MC)", -1 to -5 degree is "cold (VC)", and -3 degrees or less is "very cold" I am trying.

Also, regarding the fuzzy rule shown in FIG. 8, corresponding to the CF value of the membership function shown in FIG. 7, if the temperature difference signal x ₁ is VVC (quite cold), the operating speed of the mix door is FS. (High speed) and the rotation direction is CW (HOT side). Similarly, if the temperature difference signal x ₁ is VC (cold), the operating speed of the mix door is MD (medium speed) and the rotation direction is CW (HOT side). If the temperature difference signal x ₁ is MC (slightly cold), the operation speed of the mix door is SL (low speed) and the rotation direction is CW (HOT side). If the temperature difference signal x ₁ is GD (suitable), the operation speed of the mix door is set to SL (low speed), and the rotation of the mix door is set to ST (stop). If the temperature difference signal x ₁ is MH (slightly hot), the operation speed of the mix door is SL (low speed), and the rotation direction is CCW (COLD side). If the temperature difference signal x ₁ is VH (hot), the operation speed of the mix door is set to MD (medium speed) and the rotation direction is set to CCW (COLD side). If the temperature difference signal x ₁ is VVH (quite hot), the operating speed of the mix door is set to FS (high speed) and the rotation direction is set to CCW (COLD side).

By subdividing the CF value in this way, it is possible to perform control closer to human sensitivity.

Further, the present invention can be applied not only to the control of the blowout temperature described above but also to the control of the blowout mode, for example. 11 is a block diagram showing a heater unit of an automobile air conditioner according to an embodiment of the second invention, FIG. 12 is a diagram showing a membership function according to an antecedent part variable of the embodiment, and FIG. 13 is the same. FIG. 14 is a diagram showing a fuzzy rule stored in the fuzzy inference means of the embodiment, and FIG. 14 is a diagram showing a membership function relating to a consequent variable of the embodiment.

The heater unit case 1, the heater core 2, the bypass 3, the mixed door 4, the mixing chamber 5, the differential air outlet 6 and the differential door 6D, the vent air outlet 7 and the vent door 7D, the foot air outlet 8 shown in FIG. Since the foot door 8D, the intake unit 17, and the cooler unit 21 are the same as those in the embodiment according to the first invention described above, common members are given the same reference numerals as those in FIG. 1 and their description is omitted.

In this embodiment, three control doors, a differential door 6D, a vent door 7D, and a foot door 8D, are configured to be opened and closed by the mode actuator 14 via a link mechanism (not shown). The blowout mode includes, for example, a vent mode in which only the vent door 7D is opened, a foot mode in which the foot door 8D and the differential door 6D are half-opened, and a bilevel mode in which the vent door 7D and the foot door 8D are half-opened, respectively. It should be noted that such a blowing mode is not limited to this embodiment and can be set in various ways.

Further, in the present embodiment, there is provided a mix door position detecting means 15 such as a PBR for detecting the current opening degree of the mix door. The mix door position detecting means 15 detects whether the mix door is currently on the COOL side, the HOT side, or an intermediate position, and outputs it to the fuzzy inference means 16.

On the other hand, the fuzzy inference means 16 of this embodiment is an A / D converter for converting the position analog signal from the mix door position detecting means 15 into a digital signal of 2 to 8 bits, and a fuzzy inference means. From the ROM that stores the membership function, the fuzzy inference unit that stores the fuzzy inference logic, and the operation unit that calculates the operating position (the voltage applied to the mode actuator 14) and outputs it to the signal conversion means 27. It is configured.

In this fuzzy inference means 16, the operating position of the mode actuator 14 is determined by fuzzy inference. The manipulated variable is a certainty value (CF value) obtained from each control law stored in the ROM in advance. Executed by. That is, FIG. 12 is a membership function relating to the antecedent variable, in which the temperature difference signal output from the PBR15 that is the mix door position detection means, that is, the PBR voltage is the horizontal axis, and the CF value corresponding to this is the vertical axis. Shown on the axis. At this time, when the CF value is expressed by a fuzzy label, that is, a concept including ambiguity, when the PBR voltage is 2 V or more, it is “HOT side”, 1.7 to 2.5 V is “intermediate position”, and 2 V or less is “ "Cool side". On the other hand, FIG. 14 is a membership function related to the consequent variable, in which the horizontal axis represents the voltage applied to the mode actuator 14 and the vertical axis represents the blowing mode.

Further, FIG. 13 shows a fuzzy rule stored in the fuzzy inference unit. If the P BR voltage is on the COL side, the blowout mode is set to the vent mode. If the PBR voltage is at the intermediate position, the blowout mode is set to the bilevel mode, and if the PBR voltage is at the HOT side, the blowout mode is set to the foot mode.

Then, fuzzy inference is performed by the membership function shown in FIG. 12 and the fuzzy rule shown in FIG.

Fuzzy reasoning is a theory that uses set theory to mathematically solve an ambiguity amount such as “almost” or “a little” expressed by human senses, and by doing this, control close to human senses can be achieved. It can be carried out. In addition, warm-up and cool-down can be performed in a short time, and since programming can be performed with a qualitative expression, work such as program setting and change can be easily performed in a short time.

[0040]

[Effect of the device]

 As described above, according to the present invention, a temperature setter that selects a desired temperature, a room temperature sensor that detects the temperature inside the passenger compartment, and a difference between temperature data obtained from the temperature setter and the room temperature sensor. The temperature difference data obtained by the temperature difference calculating means for calculating the temperature is used to infer the operating speed and the rotating direction of the mix door driving means from the preset fuzzy control law, or to rotate the mix door. Mixing to detect position The operating position of the mode door drive means is inferred from the preset fuzzy control law based on the position data obtained by the door position detection means, so warm-up and cool-down can be performed in a short time. Moreover, work such as program setting and change can be easily performed in a short time.

[Brief description of drawings]

FIG. 1 is a block diagram showing a heater unit of an automobile air conditioner according to an embodiment of the first invention;

FIG. 2 is a diagram showing a membership function relating to an antecedent part variable of the embodiment,

FIG. 3 is a diagram showing a fuzzy rule stored in a fuzzy inference means of the embodiment.

FIG. 4 is a diagram showing a membership function relating to a consequent part variable in the same embodiment;

FIG. 5 is a diagram showing a membership function relating to a consequent part variable of the embodiment,

FIG. 6 is a graph showing the correction contents of the temperature difference according to the outside air temperature and the amount of solar radiation in the same embodiment,

FIG. 7 is a diagram showing a membership function relating to an antecedent variable of another embodiment of the first invention;

FIG. 8 is a diagram showing a fuzzy rule stored in the fuzzy inference means of the embodiment,

FIG. 9 is a diagram showing a membership function relating to a consequent part variable of the embodiment,

FIG. 10 is a diagram showing a membership function related to a consequent part variable of the embodiment,

FIG. 11 is a block diagram showing a heater unit of an automobile air conditioner according to an embodiment of the second invention.

FIG. 12 is a diagram showing a membership function relating to an antecedent variable of the embodiment,

FIG. 13 is a diagram showing a fuzzy rule stored in the fuzzy inference means of the embodiment,

FIG. 14 is a diagram showing a membership function relating to a consequent part variable in the same embodiment,

FIG. 15 is a block diagram showing blowout temperature control of a conventional automatic air conditioner,

FIG. 16 is a flow chart showing the blowing temperature control,

FIG. 17 is a block diagram showing a blowout mode control of a conventional automatic air conditioner,

FIG. 18 is a flow chart showing the blowing mode control.

[Explanation of Codes] 1 ... Heater unit case, 2 ... Heater core, 3 ... Detour, 4 ... Mix door, 5 ... Mixing chamber, 6 ... Diff outlet, 7 ... Vent outlet, 8 ... Foot outlet, 6D ... Differential door, 7D ... Vent door, 8D ... Foot door, 9 ... Mix door actuator 10 ... Temperature setting device, (mix door driving means) 11 ... Room temperature sensor, 12 ... Temperature difference calculating means, 13, 16 ... Fuzzy inference means, 14 ... Mode Door actuator, (mode door driving means) 15 ... Mix door position detecting means.

Claims (2)

[Scope of utility model registration request] 1. A heater core (2) in which engine cooling water circulates is provided in a heater unit case (1), and a bypass circuit (3) for bypassing intake air flowing down to the heater unit case is provided in the heater unit. A mix door (4), which is formed in the case and adjusts the ratio of the amount of air passing through the heater core and the bypass, is rotatably provided on the upstream side of the heater core, and on the downstream side of the heater core of the heater unit case. A heater unit for an air conditioner for a vehicle, wherein a plurality of outlets (6, 7, 8) are opened in a mixing chamber (5) formed in the above, and a mix door for rotating the mix door at a predetermined speed and direction. Driving means (9), temperature setting device (10) for selecting a desired temperature, room temperature sensor (11) for detecting the temperature inside the vehicle, and these temperature settings Temperature difference calculation means (12) for calculating the temperature difference between the temperature data obtained from the room temperature sensor and the temperature data obtained from the room temperature sensor, and the mixed door drive based on the fuzzy control rule preset by the temperature difference data obtained by the temperature difference calculation means. A heater unit for an air conditioner for an automobile, comprising fuzzy inference means (13) for inferring an operating speed and a rotation direction of the means. 2. A heater core (2) in which engine cooling water circulates is provided in a heater unit case (1), and a bypass circuit (3) for bypassing intake air flowing down into the heater unit case is provided in the heater unit case. A mix door (4), which is formed in the case and adjusts the ratio of the amount of air passing through the heater core and the bypass, is rotatably provided on the upstream side of the heater core, and on the downstream side of the heater core of the heater unit case. A plurality of outlets (6, 7, 8) are opened in the mixing chamber (5) formed in the above, and control doors (6D, 7D, 8D) are openably and closably provided at the respective outlets. In a heater unit of an air conditioner for a vehicle, which is configured by combining a plurality of open / close positions of a plurality of blowout modes, Mode door driving means (14) to be selected, mix door position detecting means (15) for detecting the rotational position of the mix door, and fuzzy control preset by position data obtained by the mix door position detecting means And a fuzzy inference means (16) for inferring the operating position of the mode door driving means from a rule.