JPH08145439A - Air conditioner - Google Patents

Abstract

PURPOSE: To largely reduce the number of the operations for deciding the reference rotary position of a stepping motor for driving the electric motor operated value of an air conditioner and to increase the life of the controller. CONSTITUTION: The air conditioner comprises a driving circuit 21 of a stepping motor 30 for controlling to drive an electric motor operated value for controlling the flow rate of refrigerant, etc., logic calculating means 1 for generating a drive signal to be supplied to the driving circuit of the motor, a ROM 3 for storing the calculating procedure of the means 1, a calculating work memory RAM 2 of the means 1, a nonvolatile calculating work memory EEPROM 4 different from the RAM 2, air conditioning various input means 40, and air conditioning various control means 50. Accordingly, the conditioner cools, heats or dehumidifies by using chilled and warm water, brine or refrigerant always stored in the EEPROM 4 for holding the rotary position data of the motor even by the interruption of a power source.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner for cooling, heating, or dehumidifying by using cold / hot water, brine, or a refrigerant, and in particular, an air conditioner equipped with an electric valve for controlling the flow rate of the cold / hot water, brine, or the refrigerant. Regarding the machine.

[0002]

2. Description of the Related Art Recently, in an air conditioner for cooling, heating, or dehumidifying by using cold / hot water, brine, or refrigerant, it is necessary to control the flow rate of the cold / hot water, brine, or refrigerant because of its convenience. -The number of cases using electric valves that transmit the rotation of a motor to control the opening / closing or opening of the valve is increasing.

A stepping motor is used as a drive source for opening and closing the electric valve used for the flow rate control. Normally, the motor-operated valve does not have a function or sensor for detecting the driving state of the stepping motor. Therefore, immediately after the power is turned on, the stepping motor is always operated until it is stepped out in the valve closing direction or the valve opening direction in order to obtain the matching relationship between the opening degree of the valve and the rotation position of the stepping motor.
At the same time as the valve is closed or fully opened, an initialization process is performed in which the motor-operated valve is operated so that this position serves as a reference point. By executing this initialization processing, the valve closed position or the fully opened valve position and the reference rotation position of the stepping motor are matched with each other. After the initialization process, when a series of pulse signal trains are applied to the stepping motor and the stepping motor is rotated, the valve opening degree changes in proportion to the rotation angle, and from the reference rotation position. By controlling the relative rotation angle of the stepping motor, the valve opening can be freely controlled. Since the rotation angle of the stepping motor is proportional to the number of applied pulses, the rotational position of the stepping motor can be represented by the number of applied pulses, and the valve can be controlled accurately.

[0004]

The stepping motor has neither means for detecting a rotational position nor means for detecting a stopped position, and it is also possible to detect whether or not the stepping motor is rotating. Can not. Therefore,
Every time the power is turned on, it is necessary to execute the operation to determine the reference rotational position of the stepping motor, and even when the motor-operated valve is in the closed or fully open position, a pulse that fully opens the closed valve. A pulse of + α or a pulse of + α for closing the fully open valve must be applied to the stepping motor. As a result, since the valve is closed or open, the stepping motor cannot rotate, but at the maximum torque that the stepping motor can output,
It acts to operate the valve on the valve closing side or the valve opening side, and excessive force is applied to the stepping motor, the drive transmission system, and the valve portion, which may lead to deterioration of the life of the electrically operated valve. Further, in an electrically operated valve having a stopper mechanism at the closed or fully opened position, a collision phenomenon occurs in the stopper mechanism portion due to a rotational vibration operation while the stepping motor is out of step, and an abnormal noise is generated. There was a problem.

The present invention has been made in order to solve the above problems, and an object of the present invention is to significantly reduce the number of operations for determining the reference rotational position of a stepping motor, or to eliminate it substantially. To do.

[0006]

The first means for solving the above-mentioned problems is to transmit the rotation of a stepping motor to the controller of an air conditioner to control the opening / closing and opening of the valve. Drive circuit for driving and controlling the electric motorized valve, logical operation means for generating a drive signal for driving the stepping motor and supplying the drive signal to the drive circuit for the stepping motor, and operation processing of the logical operation means A memory (ROM) for storing the procedure, an arithmetic work memory (RAM) of the logical operation means, and a non-volatile arithmetic work memory of the non-volatile logical operation means (for example, EEPRO).
M) and the rotation position data of the stepping motor is stored in the operation work memory (EEPROM) of the non-volatile logic operation means which is retained even when the power is cut off. .

A second means for solving the above problems is
A stepping motor drive circuit for driving and controlling a motor-operated valve that controls the opening and closing of the valve by transmitting the rotation of the stepping motor, and a drive signal for driving the stepping motor. A first arithmetic operation means for supplying the driving circuit of the stepping motor, a memory (ROM) for storing the arithmetic processing procedure of the logical operation means, and a work memory (RAM) for the arithmetic operation means.
And a communication circuit for communicating with the logical operation means of the second air conditioner control apparatus, and the logical operation means of the second air conditioner control apparatus with the first arithmetic operation means. The rotation position of the stepping motor can be transferred to and from the logical operation means of the control device of the air conditioner.
Basically, the work memory of the logical operation means of the air conditioner controller is used as a storage medium.

[0008]

According to the present invention, even if the main power source of the air conditioner controller is turned off, the nonvolatile work memory in the air conditioner controller or the logic of the second air conditioner controller is provided. Stepping mode is added to the working memory of the computing means.
Since the rotational position of the stepping motor is stored, it is not necessary to cause the motor-operated valve to perform the operation of determining the reference rotational position of the stepping motor every time the main power of the control device of the air conditioner is turned on.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of an air conditioner control device according to the present invention will be described with reference to FIG. FIG. 1 is a block diagram showing a conceptual structure of a controller, which is a control device 20 for an air conditioner.
Is a logical operation means 1, a work memory (RAM) 2 of the logical operation means, a read-only memory (ROM) 3 in which a processing procedure of the logical operation means is stored, and a non-volatile work memory of the logical operation means ( For example, an EEPROM 4 and a stepping motor driving means 21. The stepping motor 30 which is the drive source of the motor-operated valve of the air conditioner is rotated by the stepping motor drive pulse signal supplied by the stepping motor drive means 21 in accordance with the drive signal output from the logical operation means 1. It has become. Various signals necessary for controlling the air conditioner are input from various input means 40 for air conditioning, and various signals necessary for controlling the air conditioner are output to various control means 50 for air conditioning.

The stepping motor drive means 21 and the stepping motor 30 or the motor-operated valve using the stepping motor as a drive source may be composed of a plurality of pairs. However, a single case will be described here. Thereby,
It does not exclude the case of being composed of a plurality of pairs.

Further, the logical operation means 1, the work memory (RAM) 2 of the logical operation means, the read-only memory (ROM) 3 storing the processing procedure of the logical operation means, and the non-volatile work of the logical operation means. -The chrome memory (EEPROM) 4 may be constituted by a one-chip microcomputer 10 of the mask chrome type.

The operation of the present invention is as follows. The air conditioner is normally started when a resident operates an operation switch (not shown). When the operation is started, the logic operation means 1 of the air conditioner control device reads the operation conditions of the air conditioner according to the input information of the various air conditioning input means 40, and the read-only memory (which stores the processing procedure of the logic operation means). The ROM 3 is operated in accordance with the procedure stored in the ROM 3 and the results are output to the various air-conditioning control means 50 to operate the air conditioner so as to satisfy a predetermined air conditioning condition. At this time, at the same time, in order to adjust the opening degree of the electric valve, the drive signal of the stepping motor 30 which is the drive source of the electric valve is output to the stepping motor drive means 21 to rotate the stepping motor. Control the position. The non-volatile work memory (EEPROM) 4 of the logical operation means 1 is provided with an area for storing the rotational position of the stepping motor.
In this area, when the control device of the air conditioner is initially constructed and assembled, the logical operation means 1 is operated by the stepping motor.
Data is stored to recognize that the rotational position of the data is indefinite.

The operation contents of the air conditioner controller according to the present invention will be described with reference to the flow chart of FIG. When the air conditioner is installed for the first time and the power is turned on, the logical operation means 1 starts operating. That is, the initialization process (S1) of FIG. 2 is first executed to initialize the operation of the logical operation means 1, and then the processes (S10) and (S20) shown on the right side of the process (S5). ) ... is repeated until the power is turned off. The repetitive process designated in the process (S5) is the air conditioning control process (S10) and the motorized valve moving process (S20). When the power is only turned on,
The air conditioning control processing unit (S10) does not execute anything and moves to the motor-operated valve movement determination processing unit (S20). Similarly, in step S20, since there is no need to move the motor-operated valve, nothing is executed. Therefore, while repeating the processing of steps S10 and S20, the control waits until the operation switch of the air conditioner is input.
Next, when the operation switch (not shown) is operated and the operation of the air conditioner is started, the logical operation means 1 of the control device of the air conditioner has the read-only memory (ROM) 3 storing the processing procedure of the logical operation means. In accordance with the procedure stored in, the moving target position of the motor-operated valve is calculated based on the input from the various air-conditioning input means (S10). From this calculation result, it is determined whether or not to move the motor-operated valve (S20). Judgment unit (S2
In 0), when there is no need to move the motor-operated valve, nothing is done and the process of the repeated loop (S10) is executed. When it is necessary to move the motor-operated valve, the determination unit (S20) executes the process indicated on the YES side of the determination unit (S20), and then operates to execute the process of the repeated loop (S10). . Judgment unit (S2
The process on the YES side when 0) determines that the motor-operated valve needs to be moved is performed as follows. Logical operation means 1
Indicates whether the rotation position data of the stepping motor is read from the area for storing the rotation position of the stepping motor in the nonvolatile work memory (EEPROM) 4 and whether the data indicates that the data is undefined. Is determined (S3
0). If the data indicates that the rotational position of the stepping motor is indefinite, the process proceeds to the above-described motorized valve initialization processing (S40), and the stepping motor 30 that is the drive source of the motorized valve. Drive signal of stepping mode
Output to the motor drive means 21 to control the rotational position of the stepping motor to determine the initial position of the stepping motor,
The determined initial position data of the stepping motor is stored in the nonvolatile work memory (EEPROM) 4 of the logical operation means.
The rotation position of the stepping motor is stored in the storage area (S45). By this processing, the initialization processing of the motor-operated valve is completed. Then, it moves to a process (S35), the movement amount of the motor-operated valve is calculated, and based on it, in a process (S37),
The motor valve movement processing (movement control signal generation and output to the stepping motor drive means) is performed, and the rotation position of the stepping motor based on this movement is used to determine the rotation position of the stepping motor in the work memory (EEPROM) 4 of the logical operation means 1. Are sequentially updated and stored in the area for storing. As a result, the process on the YES side of the process (S20) is completed, and the execution of the above-described repeated loop is restarted. Judgment unit (S30)
Indicates that the rotation position of the stepping motor stored in the work memory (EEPROM) 4 is not indefinite, nothing is executed and the above-described process (S35) which is a normal motor valve movement control process is executed. , And the processing (S37) is executed to restart the execution of the above-described repeated loop. In this way, the rotational position control of the electric valve according to the air conditioning condition is executed.

The non-volatile work memory (EEPROM) 4 of the logical operation means is provided even if the power of the air conditioner is turned off.
Since the value can be maintained, the rotation position of the stepping motor is always maintained even if the air conditioner is powered on and the operation switch (not shown) is operated to start the operation of the air conditioner. Is stored, the moving amount of the motor-operated valve is calculated using the rotational position data stored in the nonvolatile work memory (EEPROM) 4 (S35),
Since the motor-operated valve drive processing is performed (S37), the logical operation means 1 of the air conditioner control device repeats stepping mode.
There is no need to perform an operation to determine the initial position of the data.

As a result, according to the present invention, the rotational position of the stepping motor, which is the drive source of the motor-operated valve, is always stored in the non-volatile work memory of the logical operation means.
Since the motor-operated valve is not operated to determine an excessive initial position, the motor-operated valve can have a long service life, and further, an abnormal sound can be prevented from being generated when the initial position is determined. .

The second invention (second embodiment) of the present invention will be described with reference to FIG. Compared with the invention shown in the first embodiment, the present invention additionally includes a power supply voltage detecting means 22 configured to detect a decrease in the power supply voltage and input a detection signal to the logical operation means. It is different. Other configurations are similar to those of the first invention. The nonvolatile work memory (EEPROM) used in the present invention has a deteriorated life due to writing, and it is not desirable to always perform the writing operation while the air conditioner is operating. The present invention is an invention that solves this problem.

The operation of the air conditioner controller according to the present invention shown in FIG. 3 is as follows. The air conditioner is normally started when a resident operates an operation switch (not shown). When the operation is started, the logic operation means 1 of the air conditioner control device reads the operation conditions of the air conditioner according to the input information of the various air conditioning input means 40, and the read-only memory (which stores the processing procedure of the logic operation means). The ROM 3 is operated in accordance with the procedure stored in the ROM 3 and the results are output to the various air-conditioning control means 50 to operate the air conditioner so as to satisfy a predetermined air conditioning condition. At this time, at the same time, in order to adjust the opening degree of the electric valve, the drive signal of the stepping motor 30 which is the drive source of the electric valve is output to the stepping motor drive means 21 to rotate the stepping motor. Control the position. The work memory 2 (RAM) of the logical operation means 1 and the non-volatile work memory (EEP) of the logical operation means 1
The ROM) 4 is provided with an area for storing the rotational position of the stepping motor. The position information of the stepping motor during operation is sequentially updated and stored in the work memory (RAM) 2. Work memory (RAM) is detected immediately when a drop in the power supply voltage is detected when the air conditioner is stopped.
The non-volatile work memory (EEPROM) 4 of the logical operation means 1 stores the position information of the stepping motor stored in 2
To be stored.

The operation contents of the air conditioner controller according to the present invention will be described with reference to FIG. In the area for storing the rotational position of the stepping motor of the nonvolatile work memory (EEPROM) 4 of the logical operation means 1, when the controller of the air conditioner is initially constructed and assembled, the logical operation means 1
However, data for recognizing that the rotation position of the stepping motor is indefinite is stored. When the power of the air conditioner is turned on, the logical operation means 1 of the control device first executes an initialization process (S1). Next, the logic operation means 1 of the control device of the air conditioner follows the procedure of the non-volatile work memory (EEPROM) 4 of the logic operation means in accordance with the procedure stored in the read-only memory 3 in which the processing procedure of the logic operation means is stored. The rotational position data of the stepping motor is read from the area for storing the rotational position of the stepping motor, and transferred to the area for storing the rotational position of the stepping motor in the work memory (RAM) 2 of the logical operation means. (S2). Then
The logical operation means 1 repeats the following operations until the power is turned off,
The operation control of the air conditioner is performed (S5). The repetitive process designated in the process (S5) is the air conditioning control process (S10) and the motor-operated valve movement determination process (S20). When only the power is turned on, the air conditioning control processing unit (S10) does nothing and moves to the motor-operated valve movement determination processing unit (S20). Similarly, in step S20, since there is no need to move the motor-operated valve, nothing is executed, and therefore, the process (S10) and the process (S20)
While repeating, wait for the operation switch of the air conditioner to be input.

When an operation switch (not shown) is operated and the operation of the air conditioner is started, the logical operation means 1 of the air conditioner has a read-only memory (ROM) storing a processing procedure.
Various air-conditioning input means 40 according to the procedure stored in 3.
The air-conditioning control process is executed by using the input from (the input indicating that in the initialization process at the time of installation), and the target position of the motor-operated valve is first calculated (S10). Then, it is determined whether or not to move the motor-operated valve based on the calculation result (S2
0), when it is necessary to move the motor-operated valve, the stepping mode of the work memory (RAM) 2 of the logical operation means is set.
The rotational position data of the stepping motor stored in the area for storing the rotational position of the data is read out, and it is determined whether or not the content is indefinite (S31). Logical operation means
If the rotational position data of the stepping motor read from the area for storing the rotational position of the stepping motor in the memory (RAM) 2 is indefinite, the process proceeds to the motorized valve initialization process (S40).

In the initialization process, the logical operation means 1 executes an operation to move the motor-operated valve to the fully open or closed position according to the processing procedure, and the stepping motor drive means 2 is executed.
A drive signal is output from 1 to the stepping motor 30 to control the rotational position of the stepping motor, and normal initialization processing is executed to determine the initial position of the stepping motor (S40). When the initialization process is completed, the initial position data of the stepping motor is stored in the area for storing the rotational position of the stepping motor in the work memory (RAM) 2 of the logical operation means (S46). When this is completed, it operates so as to execute the processing of step S35 and step S38, completes the processing on the YES side of step S20, and restarts the execution of the above-described repeated loop.

After that, the control of the rotational position of the stepping motor according to the control condition of the air conditioner is performed as follows. Since the rotational position of the stepping motor has already been stored in the area for storing the rotational position of the stepping motor of the work memory (RAM) 2 of the logical operation means, it is determined that the determination in step (S31) is not indefinite. The control amount of the electric valve is calculated from the rotation position of the electric valve and the rotation position of the electric valve calculated based on the control condition of the air conditioner (S35), and the electric valve drive process ( S38) is executed. By this processing, the changing rotational position of the motor-operated valve (rotating position of the stepping motor) is sequentially updated and stored in the area of the work memory (RAM) 2 for storing the rotational position of the stepping motor (S3).
8). Through the above processing, the work memory (RAM) 2
The latest data is always stored as the rotational position data stored in the area for storing the rotational position of the stepping motor.

In such an operating state, the power supply voltage detecting means 22 constantly monitors the power supply voltage (not shown) supplied to the control device 20 of the air conditioner, and the power supply voltage drops to point A as shown in FIG. When it is detected, the fact is transmitted to the logical operation means 1 and the following interrupt processing is executed. Upon receiving this power supply voltage drop detection signal, the logical operation means 1
The rotation position of the stepping motor of the work memory (RAM) 2 of the logical operation means is stored according to the contents stored in the read-only memory (ROM) 3 of the logical operation means prepared exclusively for receiving the signal. The rotational position data of the stepping motor stored in the area for storing the stepping motor is stored in the area for storing the rotational position of the stepping motor in the non-volatile work memory (EEPROM) 4 of the logical operation means (S50).

As shown in FIG. 5, the point where the power supply voltage drops by 30% from the start time t ₀ of the power supply voltage to VA becomes A
At the point where the power supply voltage drops by about 60% to VB (point B), the microcomputer 10 of the control device 20.
When its function is stopped, the copy operation of step (S50) takes time (tB-) from the detection of the power supply voltage drop (point A) to the stop of the operation of the logical operation means (point B). Since it can be executed in several microseconds, which is sufficiently shorter than tA), the rotational position data of the stepping motor stored in the work memory (RAM) 2 is stored in the nonvolatile work memory (EEPROM) of the logical operation means. 4) The rotation position of the stepping motor 4 can be surely stored in the storage area.

As a result, the normal rotary position control of the stepping motor is performed by the work memory (RAM) of the logical operation means.
The rotation position data of the stepping motor stored in the area for storing the rotation position of the stepping motor No. 2 is used as a base, and when the power supply of the control device of the air conditioner is cut off, immediately before the cutoff. Since the rotational position data of the stepping motor is stored in the nonvolatile work memory (EEPROM) 4 of the logical operation means capable of holding the value even when the power supply of the air conditioner is turned off, Even when the power is cut off, the rotational position data of the stepping motor can be retained, and therefore, when the power is turned on next time, the nonvolatile operation unit of the logical operation means does not have to be operated again to determine the initial position. The rotational position data of the stepping motor stored in the EEPROM (EEPROM) 4 can be used to drive the stepping motor and control the rotational position.

As a result, according to the present invention, during the normal operation, the rotational position of the stepping motor is sequentially updated and stored in the work memory (RAM) 2, so that the writing operation of the EEPROM 4, which has a deterioration in life due to writing, can be reduced. Therefore, the deterioration of the life of the EEPROM 4 can be significantly delayed, and the life of the air conditioner control device can be extended. Furthermore, since the rotational position of the stepping motor, which is the drive source of the motor-operated valve, is always stored in the non-volatile work memory (EEPROM) 4 of the logical operation means when the power is cut off, Since the operation for determining the excessive initial position is not performed, the life of the motor-operated valve can be extended. Furthermore, there is an effect that it is possible to prevent the generation of an abnormal sound when determining the initial position.

An application example of the second invention will be described with reference to FIG. This embodiment is a coin throwing type time server as a power supply means for the embodiment of the second invention shown in FIG.
A screw power supply opening / closing means 100 is provided. The coin insertion type time service power supply opening / closing means 100 supplies power to the control device 20 of the air conditioner for a time determined according to the amount of coins inserted. The controller 20 of the air conditioner starts the air conditioning service by supplying power from the coin-insertion type time service power supply opening / closing means 100, and stops the air conditioning service when the power is cut off. The method of air conditioning service for air conditioners is
This is as described in the embodiment of FIG.

In the air conditioner controller having such a structure, when the air conditioning service of the air conditioner is provided, the power supply and the power supply are cut off in a very short time (every several hours). Therefore, in the case of an air conditioner equipped with an ordinary motorized valve, the initialization process of the motorized valve must be executed at high frequency, which causes a problem that the life of the motorized valve is shortened and noise is generated. However, in the case of the air conditioner of the present invention, even if it is configured to provide the air conditioning service by connecting to such a coin type time service power supply opening / closing means, it will be described in the embodiment of FIG. As described above, it is not necessary to repeatedly perform the initialization processing of the motor-operated valve, and therefore the above-mentioned problems do not occur. further,
The problem of deterioration of the life of the EEPROM is also solved.

Although the second invention has been described in this embodiment, when deterioration of the EEPROM is not a problem,
By directly writing the rotational position in the work memory (EEPROM) 4 without storing it in the work memory (RAM) 2, the same operation can be performed in the first invention.

An example in which the present invention is applied to a separate type air conditioner will be described with reference to FIG. Separate type air conditioner
First air-conditioner control device 20 for controlling the outdoor unit side
And a second air conditioner controller 2 for controlling the indoor unit side
The control device 20 ′ for the second air conditioner is provided with the power supply opening / closing means 200 for the system 20 for the control device for the first air conditioner. In such an air conditioner, the first air conditioner control device 20, the stepping motor 30, the first air conditioning input means 40, and the first air conditioning control means 50 are the air conditioners described in FIG. The configuration is the same. This first air conditioner control device 20 is provided with a second air conditioner control device 20 ′ and second air conditioning input means 40.
′, And various second air conditioning control means 50 ′ are connected. These are the control device 20 of the first air conditioner described above,
The first air conditioning input means 40 and the first air conditioning control means 50 have substantially the same operation.

The second control device 20 'system may be composed of a plurality of systems and may be connected to the first control device 20 system.
Here, it will be described as the first case.

Normally, the control device 2 for the second air conditioner on the indoor side
The 0'system is energized at all times, receives the air conditioner operation request of the occupant from the second air conditioning input means 40 ', and performs the air conditioning service based on the result. Necessary control on the indoor side is performed through the second air conditioning control means 50 '. The information necessary for the outdoor control is the control device 20 for the first outdoor air conditioner and the control device 2 for the second indoor air conditioner.
By communication with 0 ', it is transmitted to the control device 20 of the first outdoor air conditioner, and the outdoor air conditioner is transmitted to the outdoor first air conditioner.
It is controlled by the controller 20 of the air conditioner. The control device 20 for the outdoor first air conditioner, based on the command signal from the control device 20 'for the indoor second air conditioner and the signal from the outdoor first air conditioning input means 40, A necessary control signal is generated and output to the first outdoor air conditioning control means 50. It also generates a drive signal for the motor-operated valve and drives the stepping motor 30.

In the air conditioner configured and operated as described above, in order to reduce the power consumption, when it is not necessary to energize the air conditioner, the controller 20 system of the first air conditioner on the outdoor side is provided. It is desirable to shut off the power. In the present invention, the power supply opening / closing means 2 for opening / closing the power supply of the control device 20 system of the first outdoor air conditioner for executing the operation is executed.
00 is provided in the control device 20 'of the second air conditioner on the indoor side. The power supply opening / closing means 200 operates according to the output signal of the control device 20 ′ of the second air conditioner to open / close the power supply of the first control device 20 system of the air conditioner. Normally, for the air conditioning service, when it is not necessary to circulate cold / hot water or brine or refrigerant, the power supply is shut off, and in the opposite case, the power supply is connected to control the second air conditioner. The power supply switching means 200 is operated by the device 20 '. When the power supply to the control device 20 system of the first air conditioner is cut off, the first air conditioner control device 2 that detects this power cutoff
0 saves the rotational position information of the stepping motor stored in the work memory (RAM) 2 to the non-volatile work memory (EEPROM) 4. Even when the power source of the control device 20 system of the first air conditioner on the outdoor side is opened and closed as described above, the control device 20 system of the first air conditioner operates as shown in FIG.
As described above, since the rotational position of the stepping motor that is the drive source of the motor-operated valve is always stored in the non-volatile work memory 4 of the logical operation means,
Since the electric valve is not operated to determine an excessive initial position, the life of the electric valve can be extended, and an abnormal noise can be prevented from being generated when the initial position is determined. Furthermore, the problem of deterioration of the life of the EEPROM is solved.

In this embodiment, the application example of the second invention has been described. However, when the deterioration of the EEPROM is not a problem, the rotational position is stored in the work memory (EEPROM) 4 without being stored in the work memory (RAM) 2. The same can be implemented in the first invention of the direct writing method.

The fourth aspect of the present invention will be described with reference to FIG. In FIG. 8, a first air conditioner controller 20, a stepping motor 30, and a first air conditioning input means 4 are provided.
0, the first air-conditioning control means 50 is the same as that described with reference to FIG. 1. However, in the constituent elements of the first air-conditioner control device 20, the logic operation means shown in FIG. 1 or FIG. The non-volatile work memory (EEPROM) 4 is omitted. This first air conditioner control device 20 includes a second air conditioner control device 20 ', second air conditioning input means 40',
The second air conditioning control means 50 'and the power supply opening / closing means 200 of the first air conditioner control device 20 system are connected.
These are the same as the configuration of FIG. 7 described above.

Normally, the control device 2 for the second air conditioner on the indoor side
The 0'system is energized at all times, accepts the occupant's air conditioner operation request from the second air conditioning input means 40 ', and performs air conditioning service according to the result. Necessary control on the indoor side is performed through the second air conditioning control means 50 '.
The information necessary to control the outdoor equipment is
By the communication between the control device 20 for the air conditioner and the control device 20 ′ for the second air conditioner on the indoor side. This is executed by the control device 20 of the air conditioner. The control device 20 for the first outdoor air conditioner is the control device 2 for the second indoor air conditioner.
Based on the 0'command signal and the signal from the outdoor first air conditioning input means 40, a necessary control signal is generated and output to the outdoor first air conditioning control means 50. Also,
A drive signal for the motor-operated valve is also generated to drive the stepping motor 30.

In the air conditioner configured and operated as described above, in order to reduce the power consumption, when it is not necessary to energize the air conditioner, the controller 20 system of the first air conditioner on the outdoor side is provided. It is desirable to shut off the power. In the present invention, in order to execute this, the power supply opening / closing means 200 for opening / closing the power supply of the control device 20 system of the first outdoor air conditioner is provided. The power supply opening / closing means 200 operates according to the output signal of the control device 20 ′ of the second air conditioner to open / close the power supply of the first control device 20 system of the air conditioner.
Normally, for the air conditioning service, when it is not necessary to circulate cold / hot water or brine or refrigerant, the power is shut off, and in the opposite case, the power is connected.
The power supply opening / closing means 200 is controlled by the air conditioner controller 20 '.
Is activated. The above is the same as described in the invention of FIG.

The operation of the present invention is as follows. In the 20th system of the first control device, the work memory (R
AM) 2 is provided with an area for storing the rotational position of the stepping motor, and the rotational position control of the stepping motor is performed by the stepping motor stored in the work memory (RAM) 2.
The rotational position data of the data is executed based on the data. When the power supply to the first control unit 20 system is turned on, the rotational position data of the stepping motor in the work memory (RAM) 2 is reset, and the stepping motor cannot be driven. It Control device 20 'for the second air conditioner
The system also has a work memory (RAM) 2'of logical operation means.
Further, an area for storing the rotational position of the stepping motor similar to that provided in the first control device 20 system is provided. When power is supplied to the control unit 20 'of the second air conditioner, the rotational position data of the stepping motor in the work memory (RAM) 2'is reset, and the initial position determining operation of the stepping motor is performed. Is set to an incomplete state. Next, when the resident gives an instruction to operate the air conditioner through the second air conditioning input means 40 ', the second logic operation means 1'
Judges the other air conditioning conditions obtained through the second air conditioning input means 40 ′, and when it judges that the operation of the control device 20 system of the first air conditioner is necessary, the first air conditioning The power supply opening / closing means 200 of the control device 20 system of the machine is operated to supply power to the control device 20 system of the first air conditioner. Next, the second logical operation means 1 ′ waits for the power supply of the control device 20 system of the first air conditioner to stabilize and then supplies the information necessary for the operation of the control device 20 system of the first air conditioner, First
Is transmitted to the logical operation means 1. It also includes the rotational position data of the stepping motor stored in the work memory (RAM) 2'according to the present invention. In this case, data indicating that the initial position determination operation of the stepping motor is incomplete is transmitted, and the first data is received.
The logical operation means 1 of this works as a work memory (RAM) 2
To be stored.

The first logical operation means 1 operates when the control condition that requires the driving of the stepping motor occurs.
The stepping motor is driven and controlled by referring to the data in the black memory (RAM) 2. In this case, since the data indicating that the initial position determining operation of the stepping motor is incomplete is stored in the work memory (RAM) 2, the first logical operation means 1 first operates the stepping motor driving means. The stepping motor 30 is driven through 21 to execute the initial position determining operation of the stepping motor, and the rotation position of the stepping motor at the time of completion is stored in the work memory (RAM) 2. When a control condition for driving the stepping motor is subsequently generated, the first logical operation means 1 refers to the data in the work memory (RAM) 2 to generate the necessary stepping motor. Is rotated normally or reversely to control the rotation angle of the stepping motor, and the rotation position of the stepping motor is stored in the work memory (RAM) 2
To be stored. Hereinafter, this is repeated. The above is the same as described in the iterative loop processing S5 of FIG.

The second logical operation means 1'executes the control processing for providing the necessary air conditioning service based on the input information from the second input means 40 'for the air conditioning, and outputs the result. , And outputs to the second air-conditioning control means 50 ', and transmits information necessary for operating the first air conditioner controller 20 system to the first logic operation means. While the second logical operation means 1'is executing such processing, the condition that the air conditioning service is no longer necessary or the condition required for the air conditioning service is achieved, and the first air conditioning service is achieved. Control device 20
When the operation of the system is no longer necessary, or when the resident inputs a request to stop the operation of the air conditioner through the second various air conditioning input means 40 ', the second logical operation means 1
′ Is the work memory (RA
M) requesting the transmission of the rotational position data of the stepping motor stored in 2, and when the corresponding data is transmitted from the first logical operation means 1, it is stored in the work memory (RAM).
2 ', and then the first air conditioner controller 20
The power supply opening / closing means 200 of the system is operated to cut off the power supply of the system of the control device 20 of the first air conditioner. Usually first
The air conditioner control device 20 system maintains its state once the power is turned on. Therefore, the work memory (RA
M) The data stored in 2'is saved as it is.

Next, a normal operation will be described with reference to FIG. FIG. 9A shows the operation when the operation of the first air conditioner is started, and FIG. 9B shows the operation when the operation of the first air conditioner is stopped. When the second logical operation means 1'determines again from the input signals from the second air conditioning input means 40 'that the operation of the control device 20 system of the first air conditioner is necessary, Power supply opening / closing means 2 for the control system of the first air conditioner 20 system 2
00 (S60), and power is supplied to the control device 20 system of the first air conditioner. First air conditioner controller 2
0 starts the operation (S70). Next, the second logical operation means 1 ′ is necessary for the operation of the first air conditioner control device 20 system after waiting for the stabilization of the power supply of the first air conditioner control device 20 system (S 61). Information is read from the working memory (RAM) 2'of the control device 20 'of the second air conditioner and transmitted to the first logical operation means 1 (S62). Among them, the above-mentioned work memory (RAM) relating to the present invention.
The rotational position data of the stepping motor stored in 2'is also included. In this case, the stepping mode before the power supply to the control system 20 of the first air conditioner is cut off.
The rotational position data of the data is transmitted, and the first logical operation means 1 receiving the data stores it in the work memory (RAM) 2 (S71).

The first logical operation means 1 refers to the data in the work memory (RAM) 2 when a control condition for driving the stepping motor is generated thereafter.
The stepping motor can be rotated forward or backward as required to control the rotation angle of the stepping motor, and the rotational position of the stepping motor can be stored in a work memory (RAM).
2 is stored. Hereinafter, this is repeated.

The second logical operation means 1'executes the control processing for providing the necessary air conditioning service based on the input information from the second input means 40 'for the air conditioning, and outputs the result. , And outputs to the second air-conditioning control means 50 ', and transmits information necessary for operating the first air conditioner controller 20 system to the first logic operation means. While the second logical operation means 1'is executing such processing, the condition that the air conditioning service is no longer necessary or the condition required for the air conditioning service is achieved, and the first air conditioning service is achieved. Control device 20
When the operation of the system is no longer necessary, or when the resident inputs a request to stop the operation of the air conditioner through the second various air conditioning input means 40 ', the second logical operation means 1'
Is a work memory (RAM) in the first logical operation means 1.
Rotation position data of stepping motor stored in 2
Data transmission request (S65), and the first logical operation means 1
When the request is received (S75), the rotational position data is read from the work memory (RAM) 2 and transmitted to the second air conditioner controller 20 '. When the second logical operation device receives this data, it stores it in the work memory (RAM) 2 '.
(S66), and thereafter, the power supply opening / closing means 200 of the control device 20 system of the first air conditioner is operated (S6).
7), the power supply to the 20 control system of the first air conditioner is cut off. The first air conditioner stops operating (S77). Normally, the control system 20 of the first air conditioner maintains its state once the power is turned on, so that the data stored in the work memory (RAM) 2'is kept in the same state. Will be saved in.

In this way, even when the power source of the control system 20 of the first air conditioner outside the room is opened and closed, the rotation of the stepping motor used in the control system 20 of the first air conditioner is rotated. The position data is constantly supplied with power and the value thereof is held in the work memory (RAM) 2 of the logical operation means.
Since it is stored in ′, the motorized valve does not need to be operated to determine the initial position excessively, so that the life of the motorized valve can be extended. Furthermore, abnormal noise is generated when the initial position is determined. There is an effect that can prevent.

In the above description, the means for significantly reducing the initial position determining operation of the motor-operated valve has been described.
However, depending on the operating load of the motor-operated valve, the stepping motor may lose step and the valve opening may not be displaced. As a measure for that, a measure may be considered in which the operating time is integrated in the arithmetic function of the logical operation means and the initial position determining operation of the electric valve is executed when the operating time of the electric valve exceeds a certain value. In this case, based on the rotational position data stored in the non-volatile memory (EEPROM) 4, by performing an initialization operation to the extent that the accumulated error is eliminated, the initial position determination operation can be performed from the actual rotational position. It is possible to carry out with the amount that does not deviate, and it is possible to reduce the occurrence of wear and vibration of the electric valve.

As another measure, for example, manual input means to the logical operation means of the air conditioner controller shown in FIG. 1 is added, and when a signal is manually input, the initial position of the motor-operated valve is determined. The operation may be performed by the logical operation means. In this case, the initial position determination operation of the motor-operated valve can be forcibly executed even if there is some inconvenience on the device, which is also useful for dealing with an abnormal situation.

As another measure, for example, through various air-conditioning input means of the controller of the air conditioner shown in FIG.
A remote control used by a user of an air conditioner can issue an instruction to determine an initial position of a motor-operated valve to a logical operation means of a control device of the air conditioner so that the logical operation means executes the initial position determination operation of the motorized valve. It can also be configured. A detailed description of these is omitted, but it is obvious that they can be easily implemented.

[0047]

As described above, according to the present invention,
According to a first aspect of the present invention, a stepping motor for driving and controlling a motor-operated valve adapted to transmit the rotation of the stepping motor to control the opening and closing and the opening of the valve to a control device for an air conditioner.
Drive circuit for the stepping motor, a logic operation means for generating a drive signal for driving the stepping motor and supplying the drive signal to the drive circuit for the stepping motor, a memory (ROM) for storing the operation processing procedure of the logic operation means, and a logic Calculation work of the calculation means
A non-volatile memory which is provided with a memory (RAM) and an arithmetic work memory (EEPROM) for the non-volatile logical operation means different from the above, and retains the rotational position data of the stepping motor even when the power is cut off. By storing it in the arithmetic work memory (EEPROM) of the logical operation means, the rotational position of the stepping motor, which is the drive source of the motor-operated valve, is always stored in the non-volatile work memory of the logical operation means. Since the motor-operated valve is not operated to determine the initial position excessively, it is possible to prolong the life of the motor-operated valve and prevent abnormal noise from being generated when the initial position is determined.

Further, according to the second aspect of the present invention, the drive control of the motor-operated valve for transmitting the rotation of the stepping motor to control the opening and closing of the valve and the opening of the valve is transmitted to the control device of the air conditioner. A drive circuit for the stepping motor, a logic operation means for generating a drive signal for driving the stepping motor and supplying the drive signal to the drive circuit for the stepping motor, and a memory (ROM) for storing the operation processing procedure of the logic operation means.
And an operation work memory (RAM) of the logical operation means,
An arithmetic work memory (EEPROM) of a non-volatile logical operation means different from this and a power supply voltage detection means are provided, and the rotational position data of the stepping motor is normally stored in a work memory (RAM). When the power is cut off, the rotational position data is held even when the power is cut off.
The rotational position of the stepping motor, which is the drive source of the motor-operated valve, is always stored in the non-volatile work memory of the logical operation means, and an excessive initial position is determined in the motor-operated valve. It is possible to extend the life of the motor-operated valve, prevent abnormal noise from occurring at the time of initial position determination, and normally write and update rotational position data in the work memory (RAM). However, since the rotational position data stored in the work memory (RAM) is transferred to and stored in the EEPROM only when the power is cut off, the deterioration of the life of the EEPROM can be significantly delayed.

According to the third aspect of the invention, the stepping motor is driven to drive and control the motor-operated valve which transmits the rotation of the stepping motor to the valve of the air conditioner to control the opening and closing and the opening of the valve. A circuit, a logic operation means for generating a drive signal for driving the stepping motor and supplying the drive signal to the drive circuit of the stepping motor, a memory (ROM) for storing the operation processing procedure of the logic operation means, and a logic operation means A calculation work memory (RAM) and a calculation work memory (EEPR) of a non-volatile logic calculation means different from this
OM) and a control device for a second air conditioner having a power supply opening / closing means for the control device system of the first air conditioner. A logical operation means of the control device of the air conditioner and a logical operation means of the control device of the second air conditioner are connected by a communication circuit, and the rotational position data of the stepping motor is normally set to that of the first air conditioner. A working work memory (EEPRO) of a non-volatile logical operation means that stores the rotational position data in a work memory (RAM) and retains this rotational position data when the power is cut off.
Since the rotational position of the stepping motor, which is the drive source of the motor-operated valve, is stored in M), the non-volatile work memory (EEPROM) of the logical operation means of the first air conditioner is used.
Since the motor-operated valve is not always operated to determine an excessive initial position, the life of the motor-operated valve can be extended and abnormal noise can be prevented from occurring at the time of initial position determination. , Usually work memory (RAM)
Since the rotation position data is written and updated in and the rotation position data stored in the work memory (RAM) is transferred and stored in the EEPROM only when the power is cut off, the EEPR
The deterioration of the life of the OM can be significantly delayed.

In the fourth aspect of the invention, the stepping motor is driven to drive and control the motor-operated valve which controls the opening and closing and the opening of the valve by transmitting the rotation of the stepping motor to the controller of the air conditioner. A circuit, a logic operation means for generating a drive signal for driving the stepping motor and supplying the drive signal to the drive circuit of the stepping motor, a memory (ROM) for storing the operation processing procedure of the logic operation means, and a logic operation means A control device for a first air conditioner including a work memory (RAM), a logical operation means for supplying to the second air conditioner, and a memory (ROM) for storing the operation processing procedure of the logical operation means. , A work memory (R
AM) and a second air conditioner control device, and a communication circuit between the logic operation means of the first air conditioner control device and the logic operation means of the second air conditioner control device. Is provided so that the rotational position of the stepping motor can be mutually transferred between the logical operation means of the control device of the second air conditioner and the logical operation means of the control device of the first air conditioner. Since the calculation work memory of the logical calculation means of the second air conditioner control device capable of holding the value is used as the storage medium, the excessive initial position of the motorized valve is determined without using the EEPROM. There is an effect that the operation is not performed, the life of the motor-operated valve can be extended, and an abnormal sound at the time of determining the initial position can be prevented.

[Brief description of drawings]

FIG. 1 is a block diagram showing a schematic configuration of a control device for an air conditioner according to the present invention.

FIG. 2 is a flowchart for explaining the operation of the control device for the air conditioner shown in FIG.

FIG. 3 is a block diagram showing a schematic configuration of a control device for an air conditioner according to a second invention.

FIG. 4 is a flowchart illustrating an operation of the control device for the air conditioner shown in FIG.

FIG. 5 is a curve diagram showing operating characteristics of the power supply voltage detection device.

FIG. 6 is a block diagram showing a schematic configuration of a control device for an air conditioner according to another embodiment of the first or second invention.

FIG. 7 is a block diagram showing a schematic configuration of a control device for an air conditioner according to a third invention.

FIG. 8 is a block diagram showing a schematic configuration of a control device for an air conditioner according to a fourth invention.

FIG. 9 is a diagram showing mutual timing of power supply start / end of the air conditioner according to the fourth invention.

[Explanation of symbols]

 1: Logical operation means 2: Work memory (RAM) 3: ROM 4: Non-volatile work memory (EEPROM) 10: Microcomputer 20: Air conditioner control device 21: Stepping motor drive means 22: Power supply voltage detection means 30: Stepping motor 40: Various input means for air conditioning 50: Various control means for air conditioning 100: Coin-insertion type time service power supply opening / closing means 200: Power supply opening / closing means for the control device system of the first air conditioner

Claims (16)

[Claims] 1. A stepping motor for driving and controlling a motor-operated valve adapted to control the opening and closing of a valve by transmitting the rotation of the stepping motor for controlling the flow rate of cold / hot water or brine or refrigerant. A drive circuit, a logic operation means for generating a drive signal for driving the stepping motor and supplying the drive signal to the drive circuit of the stepping motor, a memory for storing the operation processing procedure of the logic operation means, and an operation for the logic operation means In a control device equipped with a work memory, a non-volatile arithmetic operation work memory of a non-volatile logic operation means, various air-conditioning input means, and various air-conditioning control means, a rotational position data of a stepping motor is detected. -Cold or hot water, characterized in that the data is always stored in the work memory of the non-volatile logical operation means which is held even when the power is cut off. An air conditioner that cools or heats or dehumidifies using brine or refrigerant. 2. A logical operation means, a memory for storing an arithmetic processing procedure of the logical operation means, and an operation word for the logical operation means.
And a work memory for non-volatile logical operation means, which is different from the above, in a one-chip micro computer.
The air conditioner according to claim 1, wherein 3. The air conditioner according to claim 1 or 2, wherein a coin type time service power supply opening / closing means is used as a power supply source to the air conditioner. 4. The air conditioner according to claim 1, wherein the control device for the air conditioner is provided with a manual motorized valve initialization processing instruction input means. 5. The air conditioner according to claim 1, wherein the control device for the air conditioner can accept and execute an initialization processing instruction input of the motor-operated valve via various input means for air conditioning. . 6. A stepping motor for driving and controlling a motor-operated valve adapted to control the opening and closing and the opening of a valve by transmitting the rotation of the stepping motor for controlling the flow rate of cold / hot water or brine or refrigerant. A drive circuit, a logic operation means for generating a drive signal for driving the stepping motor and supplying the drive signal to the drive circuit of the stepping motor, a memory for storing the operation processing procedure of the logic operation means, and an operation for the logic operation means In a control device equipped with a work memory, an arithmetic work memory of a non-volatile logical operation means different from this, various input means for air conditioning, and various control means for air conditioning, the power supply voltage is monitored and the power supply voltage is monitored. And a power supply voltage detecting means for transmitting a signal to the logical operation means when a decrease in the voltage is detected, and the rotational position data of the stepping motor is detected.
Data is normally stored in the work memory for calculation, and when a decrease in the power supply voltage is detected, it is stored in the work memory for calculation of the non-volatile logic calculation means that is retained even when the power is cut off. An air conditioner that cools or heats or dehumidifies using cold / hot water, brine, or a refrigerant. 7. A logic operation means, a memory for storing the operation processing procedure of the logic operation means, and an operation word for the logic operation means.
And a work memory for non-volatile logical operation means, which is different from the above, in a one-chip micro computer.
The air conditioner according to claim 6, wherein 8. The air conditioner according to claim 6, wherein a coin type time service power supply opening / closing means is used as a power supply source for the air conditioner. 9. The air conditioner according to any one of claims 6 to 8, wherein a control device for the air conditioner is provided with a manual motorized valve initialization processing instruction input means. 10. The air conditioner according to claim 6, wherein the control device for the air conditioner can receive the input of the initialization processing instruction of the motorized valve via various input means for air conditioning. Machine. 11. A stepping motor for driving and controlling a motor-operated valve adapted to control the opening and closing and the opening of a valve by transmitting the rotation of the stepping motor for controlling the flow rate of cold / hot water or brine or refrigerant. A drive circuit, and a logical operation means for generating a drive signal for driving the stepping motor and supplying the drive signal to the drive circuit of the stepping motor,
A memory for storing the operation processing procedure of the logical operation means, an operation work memory for the logical operation means, an operation work memory for a non-volatile logical operation means different from this, various input means for air conditioning, and an air conditioner. Control device for the first air conditioner, which is provided with various control means for operation, and is electrically connected to the control device for the air conditioner, and is capable of exchanging information with each other, second logic operation means, and operation processing procedure of the second logic operation means. A controller for a second air conditioner, comprising: a memory for storing the data; a work memory for the second logical operation means; a second air conditioning input means; and a second air conditioning control means. A control device for an air conditioner, which comprises a power supply opening / closing means for opening and closing the power supply for the control device for the first air conditioner, and controls the rotation position data of the stepping motor during normal operation of the first air conditioner. Stored in device work memory When a drop in the power supply voltage is detected, it is stored in the work memory for operation of the non-volatile logic operation means that is held even when the power is cut off. An air conditioner for heating or dehumidifying. 12. The air conditioner according to claim 11, wherein a control device for the air conditioner is provided with a manual motorized valve initialization processing instruction input means. 13. The air conditioner according to claim 11 or 12, wherein the control device of the air conditioner can receive the input of the initialization processing instruction of the motor-operated valve via various input means for air conditioning. 14. A stepping motor for driving and controlling a motor-operated valve adapted to control the opening and closing and the opening of the valve by transmitting the rotation of the stepping motor for controlling the flow rate of cold / hot water or brine or refrigerant. A drive circuit, and a logical operation means for generating a drive signal for driving the stepping motor and supplying the drive signal to the drive circuit of the stepping motor,
A first controller provided with a memory for storing the arithmetic processing procedure of the logical operation means, a work memory for the logical operation means, various input means for air conditioning, and various control means for air conditioning, and a first control device and this electric device. Second arithmetic work memory, a power supply opening / closing means of the first control device, a second air conditioning input means, and a second air conditioning various types. A control device for an air conditioner comprising a second control device including a control means, the second control device causes the power supply opening / closing means to operate, and then supplies power to the first control device. The rotational position data of the stepping motor stored in the arithmetic work memory of the control unit is transmitted to the arithmetic work memory of the first control unit, and the first control unit also stores this data. And to control the driving of the stepping motor. Before the second control device operates the power supply opening / closing means to shut off the power supply to the first control device, the stepping motor stored in the computing work memory of the first control device is in advance. Of the rotational position data is transmitted to and stored in the second arithmetic work memory of the second control device to perform cooling, heating or dehumidification using cold / hot water, brine or a refrigerant. air conditioner. 15. The air conditioner according to claim 14, wherein the control device of the air conditioner is provided with a manual motorized valve initialization processing instruction input means. 16. The air conditioner according to claim 14 or 15, wherein the control device of the air conditioner can accept and execute an initialization processing instruction input of the motor-operated valve via various input means for air conditioning.