JPH10197033A - Automated address setting and displaying device for air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To trace the cause of a trouble if it occurs during automated address setting by providing displaying means that displays the state of the progress of setting during the automated address setting. SOLUTION: A displaying means 101 that displays the state of the progress of setting during the automated address setting is provided. A command controller 100 is arranged to a heat source unit 3 and a displaying means 101 is arranged to a command controller 100. User side units 4 to 16 are connected to the command controller 100 in sequence through a main bus line 17a and the remaining heat source side units 1 and 2 are connected to the command controller 10G through a sub bus line 17b. As the state of the progress of the setting is displayed on the displaying means 101 during the automated address setting and if the trouble occurs, the state before occurring the trouble is displayed and the cause of it can be traced easily.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic address setting display device for an air conditioner.

[0002]

2. Description of the Related Art Generally, an air conditioner in which a single heat source side unit and a plurality of use side units are connected by the same signal line, or a plurality of heat source side units, is provided. An air conditioner using a so-called link communication system in which a unit and a plurality of use-side units are connected by the same signal line is known.

Conventionally, all of these types are configured so that addresses can be automatically set (for example, Japanese Patent Laid-Open No. 4-283341).

[0004]

However, in the conventional configuration, once the automatic address setting is started, the setting progress at the time of the automatic address setting cannot be known.

In the above-mentioned air conditioner, since a plurality of use side units are arranged separately on each floor of a building or the like, once a trouble occurs during automatic address setting, it is extremely difficult to find the cause, The work time required for address setting becomes long.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to solve the above-mentioned problems of the prior art, and to make it possible to easily find the cause even if a trouble occurs during automatic address setting. To provide a setting display device.

[0007]

According to a first aspect of the present invention, there is provided an air conditioner in which one or a plurality of heat source units and a plurality of utilization units are connected by the same signal line. A display means for displaying the setting progress at the time of setting is provided.

According to a second aspect of the present invention, in an air conditioner in which a plurality of heat source units and a plurality of use units are connected by the same signal line, a command controller is provided in a predetermined heat source unit. To this command controller, multiple units on the usage side are connected in sequence via the main bus line, and the remaining units on the heat source side are connected in sequence via the sub bus line, and the command controller is set at the time of automatic address setting. A display means for displaying the progress status is provided.

According to these inventions, since the display means for displaying the setting progress at the time of the automatic address setting is provided, if a trouble occurs at the time of the automatic address setting, for example, the stage before the trouble occurred is displayed on the display means. Therefore, the cause of the trouble can be easily located.

[0010]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an automatic address setting and display device for an air conditioner according to an embodiment of the present invention.

In FIG. 1, 1 to 3 are heat source side units, the heat source side unit 1 corresponds to the use side unit 4, the heat source side unit 2 corresponds to the use side units 5 to 8, and the heat source side unit. 3 is connected to the use side units 9 to 16 by refrigerant pipes so as to correspond to the use side units. These units 1 to 16 are connected by the same signal line 17 (configured by a main bus line 17a and a sub bus line 17b as described later) to form a link communication system. 1
Reference numerals 8 to 27 denote remote controllers, a remote controller 18 controls the operation of the air conditioner including the heat source unit 1 and the use unit 4, and a remote controller 19 controls the heat source unit 2 and the use units 5 to 8. The remote controllers 20 to 27 respectively control the operation of the air conditioner including the user side unit units 9 to 16.
The control is performed according to the operation of.

In the air conditioner shown in FIG. 1, the number of heat source side units and the number of use side units are three, but the number of heat source side units and use side units is not limited. Can be increased or decreased.

FIG. 2 is a refrigerant circuit diagram showing a refrigeration cycle of an air conditioner comprising a heat source side unit 2 and use side units 5 to 8. In FIG. 2, 29 and 30 are refrigerant pipes. The high-temperature and high-pressure refrigerant discharged from the compressor 31 is a four-way valve 32, heat source side heat exchangers 33 and 34, and refrigerant pipe 3
0, which constitutes a refrigeration cycle that returns to the compressor 31 again via the use side heat exchanger 35, the refrigerant pipe 29, and the accumulator 36. When the refrigerant discharged from the compressor 31 flows in the direction of the solid line arrow (when the four-way valve 32 is in the state of the solid line), the heat source side heat exchangers 33 and 34 act as condensers and the use side heat exchanger 35 Acts as an evaporator, and the cooling operation is performed in the use side unit 5. When the refrigerant discharged from the compressor 31 flows in the direction of the dotted arrow (the four-way valve 32
Is in the state of a dotted line) is the heat source side heat exchanger 33, 34
Functions as an evaporator, the use side heat exchanger 35 functions as a condenser, and the use side unit 5 performs a heating operation.

Reference numerals 37 to 39 denote mufflers. Reference numeral 40 denotes a low-pressure switch, which is activated when the low-pressure pressure in the refrigeration cycle is abnormally reduced, and causes the compressor 31 to perform a protection operation.
Reference numeral 41 is a high-pressure switch, which operates when the high-pressure pressure during the refrigeration cycle rises abnormally to protect the compressor 31. 42 and 43 are liquid separators. Reference numeral 44 denotes an anti-icing coil. The anti-icing coil 44 is formed integrally with the heat source side heat exchangers 33 and 34, acts as a condenser during the heating operation, and prevents icing of the heat source side heat exchangers 33 and 34. Is what you do.

The user side unit 5 (user side units 6 to 7)
The description is omitted for the same configuration), the use side heat exchanger 35,
The strainers 45 and 46 and the electronic expansion valve 47 are connected in series. The flow rate and the pressure reduction amount of the electronic expansion valve 47 are arbitrarily changed according to the magnitude of the load on the conditioned room to which the use-side unit 5 is attached. Therefore, the refrigerating capacity suitable for the magnitude of the load can be obtained.

In the separation type air conditioner configured as described above, the air conditioning operation of the room to be conditioned can be performed using the use side unit, similarly to the known air conditioners. However, a detailed description of the operation is omitted.

FIG. 3 is a main part electric circuit diagram used for the heat source side unit 2. In FIG. 3, reference numeral 48 denotes a microprocessor, which controls the operation of the heat source side unit 2 based on a program stored in advance. Reference numeral 50 is an I / F (interface circuit) circuit that enables data transmission and reception between the microprocessor 48 and the signal line 17 (FIG. 1).

The I / F circuit 50 is provided with a connector 51 (terminal SG1, terminal SG2) connected to the signal line 17,
A signal input from the connector 51 (a signal generated by a change in H / L voltage level) is used for protection thermistor 52 and coil 53.
(A noise filter is formed together with the capacitor 54), and transmitted via the protection resistor 55 and the bidirectional photocoupler 56. The output of the photocoupler 56 (output of the phototransistor) is supplied to the terminal P30 of the microprocessor 48 by the operation of the photocoupler 56 by the signal.
Reference numeral 57 is an output resistor of the photocoupler 56.

On the other hand, the terminal P3 of the microprocessor 48
The signal (signal due to the H / L voltage level change) output from 1 is power-amplified by transistors 58 and 59,
Output transistor 62 through bias resistors 60 and 61
Is driven ON / OFF. This transistor 62 is ON
At the (H voltage level), an H level voltage is output to the output resistor 63 (on the side of the terminal SG1 of the connector 51), and at the same time, the transistor 64 is turned on via the bias resistors 65 and 66, and the terminal SG2 of the connector 51 is turned on. It is to be lowered to the ground potential.

Therefore, the voltage difference of H / L level (12 V)
The signal due to the change in H / L voltage level that can be reliably obtained can be output to the signal line 17 (FIG. 1) via the connector 51. At this time, the microprocessor 48 outputs the same signal as the signal output from the terminal P31 to the terminal P31.
Input from 30. By comparing these signals, it can be determined whether or not the signal has been output correctly. If these signals do not match, it means that when another unit connected to the signal line 17 is outputting a signal (another signal is superimposed and becomes a different signal), that is, when the output of the signal collides, it is not good. Re-output the signal after a certain time.

With this configuration, the microprocessor 48, that is, the heat source side unit 2 can send and receive a signal via the signal line 17.

Reference numeral 67 denotes a key circuit, which is a switch for operating the number of connected units on the utilization side, a test driver, and unique data of the heat source side unit. Microprocessor 4
8 scans and determines the operation state of the switch. 6
8 is a sensor circuit, which detects the current flowing through the compressor 31, the temperature of the compressor 31, the temperature of the discharged refrigerant, the high pressure of the refrigerant, the low pressure of the refrigerant, the temperature of the heat source side heat exchanger, the outside air temperature, etc. The detection result is input to the microprocessor 48. The microprocessor 48 controls the air conditioner to operate safely and efficiently based on these detection results. Reference numeral 69 denotes an address setting switch for operating a unique address of the heat source side unit, starting automatic address setting, not performing automatic address setting (manual address setting), and the like. The microprocessor 48 scans to determine the operational status of the switch. Reference numeral 70 denotes a power supply circuit, which creates the power supply necessary for the operation of the heat source side unit 2 from the AC power supplied from the commercial AC power supply 71. A driver circuit 72 drives the compressor 31, the four-way valve 32, the fan motor, and the like based on a signal from the microprocessor 48.

FIG. 4 is a main part electric circuit diagram used in the use side unit 5. In FIG. 4, reference numeral 73 is a microprocessor, which controls the operation of the usage-side unit 5 based on a program stored in advance inside. Reference numeral 74 is an I / F (interface circuit) circuit that enables data transmission / reception between the microprocessor 73 and the signal line 17.

The interface circuit 74 is the same circuit as the interface circuit 50 described with reference to FIG. 3, is similarly connected to the signal line 17 through the terminals SG1 and SG2 of the connector 75, and is connected to the terminal T of the microprocessor 73.
It is connected to XD and PXD. Therefore, the microprocessor 73 (use side unit 5) can similarly send and receive a signal via the signal line 17.

Reference numeral 76 denotes an I that enables transmission and reception of data between the microprocessor 73 and the remote controller 19.
/ F (interface circuit) circuit. This I / F
The circuit 76 is provided with a connector 77 (terminal SG, + 12V output terminal, GND terminal) connected to the remote controller 19, and a signal (signal due to H / L voltage level change) input from the connector 77 is coupled to the coil 78 (capacitor 79). Noise filter), bias resistor 8
0 and 81 are supplied to the switching transistor 82. An output is supplied to the terminal P81 of the microprocessor 73 by operating the transistor 82 with this signal. Reference numeral 83 is an output resistor of the transistor 82.

On the other hand, the terminal P3 of the microprocessor 73
The signal (signal due to the change in the H / L voltage level) output from the transistor 4 is power-amplified by the transistor 84, and then drives the transistor 85 ON / OFF. When the transistor 85 is ON (H level), the H level voltage is output to the output resistor 87 (on the side of the terminal SG of the connector 77).
Incidentally, 86 is an output resistance of the transistor 84, and 88 is a diode for protecting the reverse connection of the connector 77.

Therefore, it is possible to output a signal due to a change in H / L voltage level to the remote controller 19 via the connector 77.

At this time, the microprocessor 73 inputs the same signal as the signal output from the terminal P81 from the terminal P34. By comparing these signals, it is possible to determine whether or not the signals have been output correctly. If these signals do not match, the remote controller 19
Also outputs the signals at the same time (when the signals are superimposed on each other to become different signals), that is, when the outputs of the signals collide with each other, the signals are output again after an unspecified time.

With this configuration, the microprocessor 73, that is, the user-side unit 2 can transmit and receive signals to and from the remote controller 19.

Reference numeral 89 denotes a key circuit, which is a switch for operating the presence / absence of connection of a remote controller to be connected, a trial run, and unique data of the user side unit. The microprocessor 73 scans and determines the operation state of the switch. A sensor circuit 90 detects the temperature of the heat exchanger on the use side, the room temperature, etc., and inputs the detection result to the microprocessor 90. The microprocessor 90 controls the air conditioner to operate safely and efficiently based on these detection results. Reference numeral 91 denotes a driver circuit which controls the fan motor, the electric heater, the electronic expansion valve 47, and the like.
3 is driven on the basis of the signal from the control unit 3. Reference numeral 92 denotes an address setting switch which does not perform automatic address setting (manual address setting) and sets a unique address at the time of manual address setting. The microprocessor 73 scans and determines the setting state of the switch. Reference numeral 93 denotes a power supply circuit for generating a power supply necessary for the operation of the heat source unit 5 from AC power supplied from a commercial AC power supply 94.

In such an air conditioner, address automatic setting is performed according to the flowcharts (FIGS. 5, 7 and 8) described later.

On the other hand, the above-mentioned 13 user side units 4
.. to 16 are separately arranged on each floor in the same building, for example. Therefore, once a trouble occurs during the automatic address setting, it is extremely difficult to find the cause under normal circumstances, and the work time required for the automatic address setting becomes extremely long.

According to this embodiment, the display means 101 (FIG. 1) for displaying the setting progress (to be described below) at the time of automatic address setting is provided.

That is, as shown in FIG. 1, the heat source side unit 3 is provided with a command controller 100, and the command controller 100 is provided with the display means 101.
Is provided. And this command controller 10
0 are sequentially connected to 13 use side units 4 to 16 via the main bus line 17a, and the command controller 100 is connected to the remaining two heat source side units 1 to the command controller 100 via the sub bus line 17b. , 2 are connected in order.

As the above-mentioned display means 101, there are means for arranging a plurality of LEDs vertically and horizontally in a matrix and displaying by blinking the LEDs, or means for displaying numbers or symbols by 7-segment LEDs. It is suitable.

FIG. 5 is a flowchart showing a main operation of the heat source side unit when the address is automatically set. In step S101 of this flowchart, first, power supply to all units (heat source side unit and use side unit) is started. After that, when the initialization of the microprocessor is completed, a signal (DATA = D
A, SA, C) are set. DA is a destination address, SA is a source address, C is a control code, and DA = 00, SA = 00, and C = 56 are set.
C = 56 indicates address setting.

In step S103, SA is set as a candidate address for the next unit on the heat source side. The address of the heat source side unit is SA = 10, 20, 30, 4 with reference to FIG.
0. . . Is set to The data set in this way is output to the signal line 17 in step S104. At the same time, set the timer to 10 seconds and proceed to the next. In this case, when the collision of the output signals is determined, the signals are output again after an unspecified arbitrary time (for example, a value obtained by multiplying the temperature value detected by the temperature sensor by a constant value).

In steps S105 and S106, it is determined whether or not the output data (SA) has been previously used. If there is prior use, the heat source side unit using that SA outputs the same DATA (00SA56), and therefore it is determined in step S105 whether or not to input this DATA. When it is determined that the previous use is made, the process returns to step S103, and DATA is output again at the next candidate address. If the previous use is not determined after waiting for 10 seconds (step S106), the SA is not used, and the SA is stored as its own address in step S107.

According to this embodiment, step S1
When the SA is stored as the self address in 07, the display unit 101 of the command controller 100 displays that the address automatic setting has progressed to the first stage (step S107A).

In steps S108 and S109, it is determined whether the self address SA is 10 or not.
When = 10, set the timer to 15 minutes and proceed to the next. still,
After the lapse of 15 minutes (step S111), the address setting of the use side heat exchanger is automatically started, so this time is set in consideration of the time when the address setting of all the heat source side units 1 to 3 ends. Is done.

In step S110, a signal (DATA) is being received until 15 minutes have passed. During this time, the received signal is checked in steps S112 and S113. When DATA = 000056 is received, the process proceeds to address automatic setting of the user side unit (when there is another heat source side unit with SA = 10, the unit outputs the clock when the time reaches 15 minutes), DATA =
If 00SA56 (a signal having the same SA value as its own) is received, the received signal is retransmitted as it is in step S114 (indicating prior use of the SA).

Before performing the automatic address setting of the user side unit, the address duplication setting (duplication setting may be performed during the waiting time when a signal collides) is checked. Set the address again.

According to this embodiment, step S1
After 15 minutes at 11, all heat source side units 1
Since the address setting of (1) to (3) has been completed, the fact that the automatic address setting has progressed to the second stage is displayed on the display means 101 of the command controller 100 (step S111A).

Address automatic setting of the user side unit is SA
= 10, DATA = 00005 in step S115
After outputting the signal of No. 6, step S116 (N = 10)
After that, steps S117 to S119 are performed to wait for the turn of the address setting of the user side unit. That is, in step S117, the value of N is changed to its own address (S
When the value matches A), the address setting of the user-side unit sharing the refrigerant pipe is started. DATA while waiting
= 00056 (a signal for automatic address setting, which is output by the heat source side unit for which the address setting of the use side unit has been completed to perform the address setting operation of the next heat source side unit).
In step S119, the value of N is changed to the next candidate, and the process returns to step S117.

According to this embodiment, step S1
When SA = N at 17, the address setting of the user side unit sharing the refrigerant pipe is started, so that the display unit 101 of the command controller 100 indicates that the address automatic setting has progressed to the third stage. (Step S
117A).

After step S117A, step S1
Proceed to step 20 to set the address of the user side unit. Next, when the address setting for all units is completed in step S121, normal operation is started. It should be noted that the end of the address setting is determined if there is no response for a predetermined time when an inquiry about address non-setting is made by a signal (DATA = 0010C) from the heat source side unit which waits for the self address of SA = 10 and the end of address setting is determined. This is performed by outputting an address setting completion signal to the unit.

FIG. 6 is a diagram showing an address setting procedure for the heat source side unit (for example, in the case of three units as shown in FIG. 1). In FIG. 6, the order of initialization of the heat source side unit 1 is referred to as a heat source side unit 3, a heat source side unit 2, and a heat source side unit 1.

Data = 0010 from the heat source side unit 3
When 56 is output, since DATA = 001056 is output from the heat source side unit 2 within 10 seconds, the heat source side unit 3 then outputs DATA = 002056.

Similarly, the heat source side unit 1
Since ATA = 001056 is output, the heat source side unit 2 then outputs DATA = 002056. When the heat source side unit 3 receives this signal within 10 seconds, the heat source side unit 3 outputs a signal of DATA = 003056. At this stage, the addresses do not overlap, so that the address of each heat source side unit is set to a predetermined value. 15 minutes after the heat source side unit 1 stores SA = 10,
The signal DATA = 000056 is output to start the address setting of the user side unit.

FIG. 7 is a flowchart of the heat source side unit when the address of the use side unit is automatically set. In this flowchart, the compressor is operated in step S31. Next, in step S32, the user side unit in which the temperature change of the user side heat exchanger has changed is confirmed (a signal is received from the user side unit which has been in the address automatic setting mode for a certain period of time, and the number of user side units responding is checked. To count).

At this time, the set value of the switch for setting the number of connected use side units is input. When the address setting of the user side unit has been performed for the number set in this switch, the end of the address setting is determined.

According to this embodiment, step S3
In step 2, when the corresponding user side unit is confirmed,
Since the address automatic setting of the user side unit starts,
The progress of the automatic address setting to the fourth stage is displayed on the display means 101 of the command controller 100 (step S32A).

Next, in step S33, the address automatic setting start signal and the self address SA of the heat source side unit (set in the flow chart shown in FIG. 6) are output to notify the user side unit that the automatic address setting has started. .
In the following description, SA = 20 (that is, the heat source side unit 2) will be described as an example. In step S34, it is determined whether or not the heat source side unit has received a signal. When the signal is received, the process proceeds to step S35.

According to this embodiment, step S3
If the heat-source-side unit receives the signal in 4, the fact that the automatic address setting has progressed to the fifth stage is displayed on the display means 101 of the command controller 100 (step S34A).

In step S35, it is determined whether or not the command (C) of the received signal is 56, and when C = 56 is satisfied, the address setting operation is started. Step S
When SA = 1B and DA = 20 of the signal received at 36 are satisfied, steps S37 to S39 are performed. In step S37, the address to be given to the user side unit is selected and stored in ADD. In the address selection, addresses having a smaller number are sequentially assigned from unused addresses. For example, the addresses from 21, 22, and 23 to the set value by the switch. In steps S38 and S39, the values of DA, SA, and C are set, and this signal is output to the signal line 17.

According to this embodiment, step S3
In step 9, when the values of DA, SA, and C are set and this signal is output to the signal line 17, it is displayed on the display means 101 of the command controller 100 that the automatic address setting has progressed to the sixth stage. Yes (step S39
A).

Next, the SA of the signal received in step S40
= ADD, DA = 20 are satisfied, that is, when the destination address of the signal previously set and transmitted in steps S37 to S39 matches the source address of the signal just received, the process proceeds to step S41. The source address (SA) of this signal is registered in the storage unit as a registered address. In step S42, it is determined whether or not such an address setting operation has been completed for the number of use side units set by the switches. When the address setting for the set number has been completed, step S43 is performed.
Proceed to.

According to this embodiment, step S4
When the address setting for the set number is completed in step 2, the display means 101 of the command controller 100 displays that the automatic address setting has proceeded to the seventh stage (step S42A).

Then, in step S43, after outputting a signal indicating the end of the address setting to all the use side units, the operation shifts to the normal operation.

FIG. 8 is a flow chart showing the address setting operation of the use side unit (any use side unit may be used). First, in step S1, it is determined whether or not the temperature of the heat exchanger of this use side unit has changed (whether or not refrigerant has flowed during operation of the compressor). The following operation is performed.

In step S2, a signal indicating that the temperature of the heat exchanger has changed is output to the signal line 17. In step S3, it waits for reception of a start signal of automatic address setting from the heat source side unit and the address SA (20 in this example) of the corresponding heat source side unit, and after the reception, the following address automatic setting operation is started.

In step S4, the delay time T is set.
This delay time is the sum of the time based on the value initially obtained from the A / D conversion for temperature detection and the basic time. Therefore, different delay times are set according to the conditions of each of the use side units. In step S5, the process waits until this time T elapses. That is, the timer measures the delay time T to determine whether the time has elapsed.

When the delay time T has elapsed, the flow advances to steps S6 and S7 to output an address setting signal to the signal line 17. The address setting signal is, for example, a destination address (DA) = 20 (SA of the heat source side unit =
20), source address (SA) = 1B (1B indicates an address undecided), and command (C) = 56 (command indicating address setting control).

Along with the transmission of this signal, a collision of the signal is judged in step S8. That is, it is determined whether or not the other use side unit or the heat source side unit is simultaneously transmitting signals. When signals collide, the transmission signal changes. This signal collision is performed by receiving the signal on the signal line 17 at the same time as outputting the signal and determining whether or not the received signal and the output signal match.
When the signals collide with each other, the process returns to step S4, and after a predetermined delay time, the signal is retransmitted through the above steps. This operation is performed until it is determined in step S9 that the signal transmission is completed. Next, when the transmission of the signal is completed, it is determined in step S10 and step S11 whether or not the signal is received during a predetermined time S. If the signal is not received, the process returns to step S4 and the above steps are performed again. still,
The predetermined time S is measured by the timer in step S11. When a signal is received, the process proceeds to step S12, and it is determined whether SA = 20 and C = 64 are satisfied in the received signal. When the condition in step S12 is satisfied, the value of DA of the signal received in step S13 is stored in the storage location ADD as a unique address. Next, step S14
To set DA = 20, SA = ADD, C = 56.

This signal is output in steps S15 to S19. Since the signal output procedure is the same as the above-mentioned procedure, the description is omitted.

In step S20, it is determined whether or not the unique address set in this way is duplicated in another user side unit. This determination is made based on whether or not a signal transmitted by another user side unit matches its own unique address stored in the storage location ADD. If the addresses match, it is determined that the addresses are duplicated, the own value is cleared in step S21, and the address setting is again requested to the heat source side unit. When the signal indicating the end of the address setting output from the heat source side unit is input, the process proceeds to step S22 to end the address setting and start the normal operation.

FIG. 9 is a time chart when the address of the user-side unit is automatically set using the flowcharts shown in FIGS. In this time chart,
Since the address (AD) of the heat source side unit is 20, and the address of the use side unit is arbitrarily assigned to 21 to 24, which use side unit corresponds to the unit of address AD = 21 to 24 is set by address setting. It is unknown at. As a method of knowing the assigned address, it is possible to know it on the display of the remote controller.

First, when the activation of the heat source side unit and the use side unit is confirmed, each use side unit outputs a symbol indicating the address setting to the signal line after a delay time randomly determined. In the time chart of FIG. 4, the delay time (T
1 to T4) are determined to satisfy the relationship of T1 <T2 <T3 <T4. When the delay time T1 has elapsed, the use side unit outputs an address setting request signal composed of “201B56” to the signal line 17. At this time, since the heat source side unit is in the signal receivable state, it receives the signal output to the signal line 17.

The heat source side unit selects an address based on the received signal. At this time, since the address of any of the use side units has not been set yet, the smallest value "21" is selected as the set address. When an address is selected, the heat source side unit outputs an address setting signal using the selected address as a destination address to the signal line 17. The user side unit that has output the signal “201B56” is in a standby state for signal reception for a predetermined time (S) after the output of this signal. When the heat source side unit receives the signal output to the signal line by the heat source side unit in this standby state, the user side unit registers the destination address of the received signal as the unique address of its own unit, and uses this address as the source address. The signal "2
02156 "is output to the signal line.

The heat source side unit confirms that the selected and set address is set as the address of the user side unit by receiving a signal whose source address is the address selected and set as the destination address via the signal line 17. , Wait for signal reception in preparation for the next address setting. It should be noted that the usage-side unit to which the address has been set determines whether address duplication occurs until receiving a signal indicating the end of the address setting. If an address duplication occurs, it clears its own address and requests the heat source side unit to set the address again. The case where this address duplication occurs is, for example, a case where the heat source side unit cannot receive the signal output from the use side unit and performs double designation of the address.

Next, after the delay time (T2), another user side unit outputs an address setting request signal "201B56" to the signal line 17, and the same address setting as described above is performed. At this time, since the use side unit "21" has already been registered in the heat source side unit, the next address "22" is given to the use side address that has output this signal. Similarly, the address of the user side unit is "2".
3 "and" 24 "are set, and the address setting of all the user side units is completed (address setting is performed when the number of user side units set in the switch matches the number of user side units that registered the address. Is determined), a signal indicating the end of address setting is output to the signal line 17, and normal operation is started.

The delay times T1 to T4 are set so as to be maintained at intervals (about 20 mm seconds) at which the series of address setting processes described above can be completed.

As described above, the address of each heat source side unit is first set, and then the compressor is operated for each heat source side unit. When the use side unit corresponding to the heat source side unit is determined, it is determined for each group. The address setting of the user side unit can be performed. Note that the automatic address setting method in the group is not limited to the above embodiment, and an existing address setting method can be used.

According to this embodiment, since the setting progress (for example, the above-mentioned 〜) during the automatic address setting is displayed by the display means 101 (FIG. 1), even if a trouble occurs during the automatic address setting, for example, Since the stage before the occurrence of the trouble is displayed on the display means, the cause of the trouble can be easily located. Also, since it is possible to know to what stage the automatic address setting has progressed, it is possible to know the remaining time required for the automatic address setting.

[0075]

According to these inventions, since the setting progress is displayed by the display means during the automatic address setting, even if a trouble occurs during the automatic address setting, for example, the stage before the trouble occurs is displayed. Since it is displayed on the means, the cause of the trouble can be easily located.

Further, since it is possible to know to what stage the automatic address setting has progressed, it is possible to predict the remaining time required for the automatic address setting.

[Brief description of the drawings]

FIG. 1 is a schematic diagram of an air conditioning system showing an embodiment of the present invention.

FIG. 2 is a refrigerant circuit diagram showing a refrigeration cycle of the air conditioner.

FIG. 3 is a main part electric circuit diagram used in the heat source side unit.

FIG. 4 is a main part electric circuit diagram used in a use side unit.

FIG. 5 is a flowchart showing the main operation of the heat source side unit when automatically setting an address.

FIG. 6 is a diagram showing a procedure for setting an address of a heat source side unit.

FIG. 7 is a flowchart of a heat source side unit when performing automatic address setting of the use side unit.

FIG. 8 is a flowchart showing an address setting operation of an address of a use side unit.

FIG. 9 is a time chart when performing automatic address setting of a user side unit.

[Explanation of symbols]

 1-3 Heat source side unit 4-16 User side unit 17 Signal line 101 Display means

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Masao Yokoyama 2-5-5 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (72) Inventor ▲ Mitsuhiro Hashihashi Keihanhondori, Moriguchi-shi, Osaka 2-5-5 Sanyo Electric Co., Ltd.

Claims (2)

[Claims] 1. An air conditioner in which one or more heat source side units and a plurality of use side units are connected by the same signal line, a display means for displaying a setting progress at the time of automatic address setting is provided. An automatic address setting display device for an air conditioner. 2. In an air conditioner in which a plurality of heat source side units and a plurality of use side units are connected by the same signal line, a predetermined heat source side unit is provided with a command controller,
To this command controller, a plurality of use side units are connected in order via a main bus line, and the remaining heat source side units are connected in order via a sub bus line. An address automatic setting display device for an air conditioner, comprising a display means for displaying a progress status.