JPS6025701B2 - Air conditioner data setting device - Google Patents

Description

[Detailed description of the invention]

The present invention relates to a data setting device for an air conditioner that determines setting data corresponding to the input/output of a data setting switch and stores the setting data as a timer time or a set temperature. In general, this type of data setting device allows for multi-step time and temperature settings, so the input side of the device becomes complicated, the number of wiring points increases, and the data setting switch is susceptible to poor contact due to some reason. This had the disadvantage of completely losing the setting function. In particular, when using a microcomputer as a data setting device, it is common to input various detection signals in order to perform various control functions separately from the setting function.
There were cases where setting data could not be selected sufficiently in multiple stages due to a lack of input ports. The present invention has been made in view of the above-mentioned fact, and it simplifies the input side of the data setting device and prevents contact failure by determining predetermined setting data when the input/output of the data setting switch is not detected. Even if a microcomputer is used as a data setting device, the input board can be saved, and setting data such as multi-stage timer time and temperature setting can be selected. This is what I did. Hereinafter, one embodiment of the present invention will be explained by applying it to a control device for an air conditioner using a microcomputer. In FIG. 1, 1 is a discrimination device, a data storage device, a timer device,
This is a microcomputer that has functions such as a thermometer and a display signal generator. In the microcomputer 1, the power terminal B is connected to the DC power supply 2, the clock terminals CI and C2 are connected to the crystal oscillator 3, the input port 11 is connected to the output terminal of the reference pulse generator 4, and the input ports 1 and 2 are connected to the output terminal of the reference pulse generator 4. It is connected to the output end of the room temperature detector 5. Further, an operation circuit 6 and a time setting circuit 7 are connected between the input ports 13 to 19 and the DC power supply 2. On the other hand, an operation display circuit 9 is connected between the output boats PI and P2 and the DC power supply 2 via an inverter 8. Further, an IJ relay circuit 11 for air conditioning load control is connected between the output boats P3 to P5 and the DC power supply 2 via an inverter 10. The DC power supply 2 includes a full-wave rectifier 13 that rectifies the AC commercial power supply 12, and the rectifier 1.
Smoothing diode 14 and resistor 15 provided on the output side of 3
and a constant voltage circuit consisting of a constant voltage diode 16, and a connection point 17 between the resistor 15 and the constant voltage diode 16.
is the output terminal. The reference pulse generator 4 includes a diode 19 and a resistor 20 connected in series to one input terminal 18 of the full-wave rectifier 13;
An NPN transistor 23 whose base is connected to the series circuit, whose emitter is connected to the ground 21, and whose collector is connected to the DC power supply 2 via the resistor 22, is connected in series between the DC power supply 2 and the ground 21. resistors 24 and 25 connected to
A comparison terminal 27 is connected to the connection point 26 between the resistor 22 and the collector of the transistor 23, a reference terminal 29 is connected to the connection point 28 between the resistors 24 and 25, and the output terminal 30
is connected to the input port 11, and a positive feedback resistor 3 is connected between the output terminal 30 and the reference terminal.
It is composed of 2. This reference pulse generator 4 half-wave rectifies the voltage of the AC power supply 12 appearing at the input terminal 18 of the rectifier 13 via a diode 19 and a resistor 20, and supplies its output (FIG. 3a) to the base of a transistor 23. , the collector output of the transistor 23 and the DC power supply voltage divided by the resistors 24 and 25 are compared, and the commercial power supply frequency (50
It emits a rectangular pulse (Fig. 3b) of HZ or 60 days 2). In general, the DC multiplier 31 has a high input impedance and is easily affected by external noise. However, this generator uses a transistor 23 that is slow to react to instantaneous noise, so that the output terminal 30 of the DC multiplier 31 This prevents the influence of noise from appearing. Room temperature detector 5 is room temperature sensor 3
3, and A- which converts the sensor output into a binary digital quantity.
It is composed of a D converter 34. The operation circuit 6 consists of an operation key 35, an up key 36, and a down key 37. One side of each key 35 to 37 is connected to the DC power supply 2, and the other side is connected to the input port 13.
None, connected to 15. The time setting circuit 7 has a time setting switch 38 which can be turned on to the closing contacts SI to S5 and whose working contact 0 is connected to the DC power supply 2. When the contact SI is opened, the contacts S2 to S5 are closed.
is connected to input port 19 without input port 16. The operation display circuit 9 includes a red light emitting diode 39 and a green light emitting diode 40.
, 40 are connected to the DC power supply 2 via resistors 41 and 42, respectively, and their cathodes are connected to an output terminal 45, where the inverted outputs of the input terminals 43 and 44 of the inverter 8 appear.
46, and input terminals 43 and 44 are connected to output ports P1 and P2 of the microcomputer 1. The relay circuit 11 includes a compressor control relay 47 and fan control relays 48 and 49, and each relay is connected to the DC power supply 2 via the inverter 10 on the other side to the input boat P3.
None, and connected to P5. FIG. 2 shows the internal system of the microcomputer 1, and 50 is a discriminating device that detects the presence or absence of key operations on the input boat 13 and 19, as well as switch input and output. 13, a determination output is sent to the operation control device 51 every time the operation of the operation key 35 is detected. In addition, an up key 36 is provided on the input boats 14 and 16, respectively.
Every time an operation of the down key 37 is detected, the addition/subtraction device 52
Issue an addition command or subtraction command to. Reference numeral 53 denotes a set temperature storage device, which has standard set temperature data (for example, 27q0) converted into a binary value as initial data, and when an addition/subtraction command is input to the addition/subtraction device 52, it is called by the device. The addition output adds 1°C increments, the subtraction output subtracts 1°C increments, and then the data is transferred to a predetermined range (
For example, arbitrary setting data from 23° C. to 3100° C. is stored. Reference numeral 54 denotes a room temperature storage device, which stores the latest room temperature data from the room temperature detector 5 that comes in via the input port 12. 55 is a timer device, in which the discriminating device 50 connects the time setting switch 38 to any of the input ports 16 to 19.
A set time of 2 to 5 hours is specified depending on whether the input output is detected, and when no input output is detected, a set time of 1 hour is specified. The number of pulses input from the input port 11 of the reference pulse generator 4 corresponding to a set time is counted, and a count-up signal is issued after the set time from the timer command. The operation control device 51 selects one of the operation keys 50 by the discriminating device 50.
When the second operation is determined, an operation command is issued to the control signal generator 52, and when the second operation is determined, the timer device 5
5, a timer command is issued, and when the third operation is determined, a stop command is issued to the control signal generator 56, and a reset command is issued to the timer device 56, and this is repeated from the fourth time onwards. 57 from the discrimination device 50 to the operation control device 51
Every time a discrimination output is input to input port PI and P2,
1.0] [0.1] and [0.0] signals. Note that the control signal generator 56 stores data in the storage devices 54 and 5 during operation.
Compare the room temperature in step 3 and the set temperature, and depending on the difference between the two temperatures,
There is no output boat P3, and from P5 [1] or [
0], and a control signal for controlling the thickness of the combustor motor and the buang motor (none of which are shown) and for changing the air volume of the fan motor. Moreover, the operation control device 51
When a count-up signal is received from the timer device 55 after issuing a timer command, this is processed in the same manner as the third operation by the operation key 35. First, when the operation key 35 is operated for the first time (closed when pressed), the discrimination device 50
detects the signal [1] at the input boat 13 and sends a determination output to the operation control device 51. At this time, the operation control device 51 issues an operation command to the control signal generator 56, and the display signal generator 57 outputs the output boat P1.
, P2 outputs a signal of [1.0]. The control signal generator 56 compares the room temperature of the storage devices 54 and 53 with the set temperature, and depending on the difference, outputs [1] or 1 from the output port P3 or P5, respectively.

Outputs a control signal of [0]. child,
In the operation display circuit 9, the light emitting diode 39 emits red light to notify that the "operation" has started, and the control relays 47 to 49 of the relay circuit 11 are turned on.
Alternatively, the compressor motor will operate until the room temperature reaches the set temperature, and when the room temperature exceeds the set temperature, the compressor motor will stop, and as the difference between the two temperatures decreases, the fan motor will change from strong airflow to weak airflow. Make sure to switch to the amount of fish. Next, when the operation key 35 is operated for the second time, the determination output of the operation key 35 is supplied from the determination device 50 to the operation control device 51. At this time, the control signal generator 56 continues to operate as described above.
A control command is issued to maintain the room temperature near the set temperature. On the other hand, the operation control device 51 issues a timer command to the timer device 55 and instructs the display signal generator 57 to issue a display signal of [0.1] from the output ports P1 and P2. In this way, the timer counterfeit 55 is set, and the reference pulse of the commercial power frequency of the reference pulse generator 4 input from the input port 11 is divided into hourly pulses, which are counted over a counting time. will be compared with the set time. Further, in the operation display circuit 9, a light emitting diode 40 instead of the light emitting diode 39 emits green light to notify that the "timer operation" has started. When the counting time matches the set time, the timer device 55 issues a count-up signal to the operation control device 51, and the operation control device 51 stops the operation of the control signal generation device 56 and sends the output port P1 to the display signal generation device 57. , P2 to issue a signal of [0.0], the operation display circuit 9 and relay circuit 11 are all de-energized, and the air conditioner is brought to a halt. Also, the operation key 50 is pressed while the timer device 55 is counting the reference pulses.
When the operation is determined, the timer device 55 is reset and the air conditioner is brought to a stopped state. Note that whether the air conditioner is in "running", "timer running" or "stopped" state, the discriminating device 50 and the addition/subtraction device are 52, the set temperature is added or subtracted by a predetermined temperature, and the temperature is set within a predetermined range. In the present invention, the set time stored in the timer device 55 is determined by the time setting switch 38 having no retractable contact S2 and S5.
By the determination device 50 detecting the force applied to the
2 and 5 hours, respectively, and the switch 38 is turned on to the contact SI, or there is a contact failure and the discriminator 5
0 is set to 1 hour when the input position cannot be detected. Therefore, the four input ports 16 of the microcomputer 1
1 to 19 can be used to set five types of setting times, and one saved input port can be used for other key detection or signal input. In the above-described embodiment, the up key 36 and the down key 37 are used to adjust the set temperature, and the already stored temperature is increased or decreased by 1° C. within a predetermined range.
In this case, it is actually necessary to display the set temperature using a digital or analog display (not shown), which requires a display signal generator and a large number of output ports. Therefore, it is possible to provide a temperature setting switch with multiple closing contacts in the same way as the time setting switch 38, and to set the same number of temperatures as the number of closing contacts by determining the closing output that is one less than the number of closing contacts. good. In this case, if the standard set temperature is selected when the open contact of the temperature setting switch is turned on, standard room temperature adjustment can be obtained even if there is a contact failure. As described above, the present invention determines setting data corresponding to the input/output of a data setting switch having multiple contacts, such as timer setting time, room temperature setting, etc., and also determines predetermined setting data when there is no input/output, and stores this data. As a result, even if a contact failure occurs in the switch, the specified timer operation and room temperature adjustment can be performed.Especially when a microphone 0 computer is used as a data setting device, the input board is saved and the input This device is useful as a data setting device for air conditioners, etc., as it can set more data than the number of boats, display the settings indicated by the switch-on position, and simplify the wiring on the input side.

[Brief explanation of the drawing]

The figures show an embodiment in which the device of the present invention is applied to a control device for an air conditioner using a microcomputer. FIG. 1 is an electric circuit diagram of the control device, and FIG. Block lines, a and b in Figure 3 are the first
FIG. 2 is an explanatory diagram of the operation of the reference pulse generator used in the figure. 1...Microcomputer, 38...
・Time setting device, 50...Discrimination device, 55...
...Time device. Figure 2 Figure 3 Figure Ship

Claims (1)

[Claims] 1. A discriminating device that detects a closing output of a data setting switch having a plurality of closing contacts and determines setting data corresponding to the closing output, and determines setting data different from the setting data when there is no said closing output; A microcomputer is used to store setting data determined by the device as air conditioning control data such as timer time and set temperature, and one of the plurality of closing contacts is opened and the remaining contacts are closed. A data setting device for an air conditioner, characterized in that it is connected to an input side of a discrimination device.