JP3524830B2 - Automatic address setting system for air conditioners - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [0001] TECHNICAL FIELD The present invention relates to a heat source side unit.
In contrast, multiple user-side units via the same communication line
Of air conditioner using link communication system
LES automatic setting system. [0002] 2. Description of the Related Art Generally, a heat source unit and a heat source unit
Multiple units connected to the unit via the same communication line
When the heat source side unit is operated
If the temperature change is detected,
The address corresponding to the heat source side unit operated
Automatic address setting system for automatic setting via communication line
Is known (JP-A-6-147605). [0003] In this type, the user side unit
A temperature sensor is provided on the gas side of the use side heat exchanger
When setting the dress automatically, use the cooling operation or the heating operation.
While changing the temperature detected by the temperature sensor installed on the gas side
This operating heat is applied to the user side unit where
The address corresponding to the source unit via the communication line.
It is configured to set automatically. [0004] SUMMARY OF THE INVENTION However, the conventional
In the configuration, the temperature sensor provided on the gas side is used to
Detects changes in the temperature of the unit.
When automatic address setting is performed, temperature changes can be detected quickly.
Address can be set accurately,
When performing automatic address setting while performing chamber operation, the gas side
Temperature change hardly appears in the temperature detected by the temperature sensor of
It takes time to set, and it is
There is a problem that cannot be done. Therefore, an object of the present invention is to solve the above-described conventional technology.
Operation is eliminated and both cooling operation and heating operation are performed.
Air for automatic dress setting in a short time
To provide an automatic address setting system for harmonizers
You. [0006] According to the first aspect of the present invention,
Heat source side unit and the same communication line for this heat source side unit
And a plurality of user-side units connected via
Temperature change detected when operating the heat source side unit
This operated heat source side unit is compared to the utilization side unit.
Is automatically set via the communication line.
Address control system for air conditionersPrevious
The air conditioner shall be capable of cooling operation and heating operation.
AndGas of the use side heat exchanger in the use side unit
Temperature sensors are provided on the liquid side and liquid side, respectively, for cooling operation or
Or, the address is automatically registered during any operation of the heating operation.
During cooling operation, the liquid side temperature sensor
The address is automatically set according to the temperature detected by the
During chamber operation, according to the temperature detected by the gas-side temperature sensor,
The address is set automatically.
To do. Temperature change of the user side unit during cooling operation
Is likely to cause a temperature change in the temperature detected by the liquid-side temperature sensor.
The temperature change of the user side unit during heating operation is
The temperature change easily appears in the temperature detected by the temperature sensor. According to the first aspect of the present invention, a temperature change appears.
Detect temperature changes using the easier temperature sensor
The address is automatically set for both cooling operation and heating operation.
Setting can be performed accurately in a short time. [0009] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an air conditioner according to the present invention will be described.
Attached drawing of one embodiment of an address automatic setting system
This will be described with reference to FIG. In FIG. 1, 1 to 3 are heat source side units.
Yes, use side unit 4 corresponds to heat source side unit 1
And the use side units 5 to 8 correspond to the heat source side unit 2.
The heat source side unit 3 is paired with the use side units 9-16.
It is connected by a refrigerant pipe to respond. These uni
The units 1 to 16 are connected by the same communication line 17 and are linked.
Communication system has formed. Reference numerals 18 to 27 denote remote controllers.
The remote controller 18 is connected to the heat source side unit 1.
Control the operation of the air conditioner comprising the
The remote controller 19 is connected to the heat source side unit 2 and the user side.
Controlling the operation of the air conditioner comprising units 5 to 8,
Remote controllers 20 to 27 are user-side units
9 to 16 operations are controlled. The heat source side unit 3 is
The operation is performed in accordance with the operation of the use side units 9 to 16. FIG.
Now we have 3 units on the heat source side and 13 units on the user side
However, the present invention is not limited to this.
The number of side units can be arbitrarily increased or decreased. FIG. 2 shows the heat source side unit 2 and the use side unit.
Refrigerant indicating a refrigeration cycle of an air conditioner consisting of 5 to 8
It is a circuit diagram. In this figure, 29 and 30 are refrigerant pipes.
is there. The high temperature and high pressure refrigerant discharged from the compressor 31
The valve 32, the heat source side heat exchangers 33 and 34, the refrigerant pipe 30,
Side heat exchanger 35, refrigerant pipe 29, accumulator 36
To form a refrigeration cycle that returns to the compressor 31 again through
I have. The refrigerant discharged from the compressor 31 is indicated by a solid arrow.
When flowing in the direction of the mark (the four-way valve 32 is in the state of the solid line)
), The heat source side heat exchangers 33 and 34 operate as condensers.
The use side heat exchanger 35 acts as an evaporator,
The cooling operation is performed by the use side unit 5. Compressor 31
When the refrigerant discharged from the nozzle flows in the direction of the dotted arrow (fourth
(When the direction valve 32 is in the state of the dotted line), the heat source side heat exchanger
33 and 34 function as evaporators, and use side heat exchangers 35
Acts as a condenser, and heating operation is performed in the user-side unit 5.
Is performed. 37 to 39 are mufflers, and 40 is a low pressure switch.
When the low pressure in the refrigeration cycle drops abnormally.
And the protection operation of the compressor 31 is performed. 41 is
High pressure switch, abnormal high pressure in refrigeration cycle
Activate when it rises to perform the protection operation of the compressor 31
You. Reference numerals 42 and 43 denote liquid separators, and reference numeral 44 denotes an anti-icing coil.
And integrated with the heat source side heat exchangers 33 and 34.
During the heating operation, the heat source side heat exchanger 33 acts as a condenser,
34 to prevent ice formation. Use side unit 5 (use side units 6 to 7)
The explanation 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.
Have been. The electronic expansion valve 47 is mounted on the user side unit 5.
The flow rate and
The pressure reduction amount is arbitrarily changed. Therefore, the size of the load
Refrigeration capacity is obtained. In this air conditioner, for example, heat is applied to the roof of a building.
Source side units are installed, and user side units are installed in each room of the building.
After the installation, the heat source side unit and user side unit
The address for control is automatically set between
You. FIG. 3 shows a heat source for automatically setting an address.
It is a flowchart which shows the main operation | movement of a side unit. This
In step S101 in the flowchart of FIG.
Power supply to unit (heat source side unit and user side unit)
Start supplying. After this, the micro-
Step when initialization of processor (not shown) is completed
Set signals (DATA = DA, SA, C) in S102
You. DA is the destination address, SA is the source address.
Dress, C is a control code, DA = 00, SA = 0
0, C = 56. C = 56 is the address setting
Shows the setting. In step S103, SA is set to the next heat source side unit.
To be a candidate address for the Address of heat source unit
Are set to 10, 20, 30, 40... (See FIG. 4).
See). DAT set in this way in step S104
A is output to the communication line 17. At the same time, set the timer to 10 seconds.
And proceed to the next step. At this time, the collision of the output signal is determined.
At any given time (e.g., temperature sensor
After multiplying the detected temperature value by a certain value),
Output. In steps S105 and S106,
Whether the output data (SA) is used first
Make a decision. If there is prior use, use that SA
Heat source side unit has the same DATA (00SA56)
Output, so step whether to input this DATA
The determination is made in S105. If use is determined,
Return to step S103 and output DATA again at the next candidate address.
Do the force. Wait 10 seconds (step S106) and use first
If it is not determined, the SA is unused and
In step S107, the SA is stored as the self address. In steps S108 and S109,
It is determined whether the own address SA is 10 or not, and SA = 1
If it is 0, set the timer to 15 minutes and proceed to the next step. In addition, this
Automatically used after 15 minutes (step S111)
This time since the address setting of the side heat exchanger is started.
Is the time when the address setting of all the heat source side units is completed.
It is set in consideration of. Until 15 minutes have passed in step S110
It is in a receiving state of the signal (DATA). During this time, step S
112, the received signal is checked in step S113.
U. If DATA = 000056 is received, the user
Move to knit address automatic setting (SA = 10 heat source side)
If there is another unit, the clock of that unit is 15 minutes
Is output from the unit when it reaches
Receive 00SA56 (signal with same SA value as yourself)
If so, in step S114 the received signal is
It retransmits as it is (indicating prior use of the SA). Automatic setting of address of user side unit
Address duplication setting before (when waiting for signal collision)
The overlap setting may be performed between the intervals. )check
If there are duplicate settings, set the address again
You. The automatic setting of the address of the user side unit is SA
If it is 10, DATA = 00005 in step S115.
After outputting the signal of No. 6, step S116 (N = 10)
Through steps S117 to S119 and use
Wait for the address setting of the side unit. Ie
In step S117, the value of N is changed to its own address (S
User side unit that shares refrigerant piping when A)
Start the address setting of the port. DATA while waiting
= 000056 (Automatic address setting signal, use
The heat source side unit where the address setting of the side unit is completed
Perform the address setting operation of the next heat source side unit.
Is determined in step S11).
Judgment is made in step 8, and when this DATA signal is received, step
In step S119, the value of N is changed to the next candidate, and the process proceeds to step S117.
Return. In step S117, it is determined that SA = N.
To step S120 to set the address of the user side unit.
Perform settings. Next, in step S121, all units are advertised.
When the sleep setting is completed, normal operation starts. The address
The setting of the heat source ends with a heat source having a self-address of SA = 10.
By the signal from the side unit (DATA = 0010C)
Response for a predetermined time when an inquiry is made
If not, determine the end of address setting and address to all units.
This is performed by outputting a signal indicating the end of the data setting. FIG. 4 shows a heat source side unit (for example, as shown in FIG. 1).
Figure 3 shows the procedure for setting the address
is there. In this figure, initialization of the heat source side units 1 to 3 is performed.
The order is the heat source side unit 3, the heat source side unit 2, and the heat source side unit.
Knit 1. Data = 0010 from the heat source side unit 3
When 56 is output, the heat source side unit 2
Since DATA = 001056 is output, the heat source side
Unit 3 then outputs DATA = 002056.
The heat source side unit 1 also sets DATA = 00 within 10 seconds.
1056, the heat source side unit 2 then outputs D
ATA = 002056 is output. This signal is
When the knit 3 receives within 10 seconds, the heat source side unit 3
A signal of DATA = 003056 is output. At this stage, address duplication is eliminated.
Each heat source unit has its address set to a predetermined value.
You. 15 after the heat source side unit 1 stores SA = 10
Minutes later, the signal DATA = 00056 is output and the user side
Start unit address setting. FIG. 5 shows the automatic setting of the address of the user side unit.
It is a heat source side unit flowchart at the time of performing. this
In the flowchart, the compressor is operated in step S31.
Turn over. Then, in step S32, the temperature of the use side heat exchanger
Check the user unit that has changed.
From the user-side unit that has entered the automatic setting mode
And the number of responding user units is counted.
To ). At this time, set the number of connected user side units
Enter the set value of the switch to be used. User side unit
Dress setting was performed for the number set in this switch.
At this time, the end of the address setting is determined. Next, in step S33, automatic address setting is opened.
Start signal and self-address SA of this heat source side unit (Fig.
4) and outputs the address
Notifies the user side unit that automatic setting has started.
In the following description, SA = 20 (that is, the heat source side) is used as an example.
This will be described as a unit 2). In step S34, the heat source side unit outputs a signal
To determine whether or not a signal has been received.
Goes to step S35. In step S35, the command of the received signal is
It is determined whether C (C) is 56 or not, and C = 56 is satisfied.
If so, the address setting operation is started. SA = 1 of the signal received in step S36
B, if DA = 20 is satisfied, step S3
Steps 7 to S39 are performed. In step S37, the user side
Select the address given to the unit and store it in ADD
You. This address selection is for addresses that have not yet been used.
Are assigned in ascending order. For example, 2
1, 22, 23, ~ Address to the set value by switch
Is. In step S38 and step S39, DA,
Set the values of SA and C and output this signal to communication line 17
I do. Next, SA of the signal received in step S40
= ADD, DA = 20, that is,
First set and transmitted in steps S37 to S39
The destination address of the signal and the
If the source address matches, proceed to step S41
Register the source address (SA) of this signal
Registered in the storage unit. In step S42, such an address setting is performed.
Constant operation is equivalent to the number of user side units set by the switch.
It is determined whether or not the setting has been completed.
When the determination is completed, the process proceeds to step S43. In step S43, all the units on the user side are addressed.
After the signal indicating the end of address setting is output to
Move to FIG. 6 shows a user side unit (any user side unit).
Flow chart showing the address setting operation
It is. First, in step S1, this user side user
Whether the temperature of the knit heat exchanger has changed (compressor operation
To determine whether the refrigerant has flowed during the operation) and determine the temperature of the heat exchanger.
The user unit whose degree has changed performs the following operation. In step S2, the temperature of the heat exchanger changes.
A signal indicating that the communication has been completed is output to the communication line 17. Steps
In S3, start automatic address setting from heat source side unit
Signal and the address SA of the corresponding heat source side unit (this
In the example of 20), the following ad
Start the operation of the automatic setting. In step S4, a delay time T is set.
This delay time is obtained first from the A / D conversion for temperature detection.
Time based on the set value and the basic time.
You. Therefore, it differs depending on the conditions of each user side unit.
Delay time is set. In step S5, until the time T elapses.
Wait at. That is, the timer measures the delay time T.
To determine the passage of time. When the delay time T has elapsed, the process proceeds to step S6.
Proceed to step S7 to output an address setting signal to communication line 17
I do. As an example, the address setting signal is
Address (DA) = 20 (SA of heat source side unit =
20), source address (SA) = 1B (1B is an address)
Command (C) = 56 (address setting)
Command indicating control). With the transmission of this signal, at step S8
Determine signal collisions. That is, other user-side units
Or the heat source side unit is transmitting signals at the same time
It is determined whether or not. When the signal collides, the transmitted signal changes
There is a problem. This signal collision will signal
Simultaneously receive the signal on the communication line 17
Determine whether the signal matches the output signal
U. If the signal collides, the process returns to step S4 and a predetermined
After the delay time of
Send. This operation ends the signal transmission in step S9.
Is performed until it is determined. Next, when the transmission of the signal is completed, step S1 is performed.
0, a signal is received during a predetermined time S in step S11.
And if no signal is received, step
Returning to step S4, the above steps are performed again. At a given time
The interval S is measured by the timer in step S11. When the signal is received, the process proceeds to step S12,
SA = 20 and C = 64 are satisfied by the received signal
It is determined whether or not. When the condition of step S12 is satisfied
Sets the value of DA of the signal received in step S13 to a unique
It is stored in the storage location ADD as a dress. Next,
Setting of DA = 20, SA = ADD, C = 56 in step S14
I do. In steps S15 to S19,
Output a signal. The signal output procedure is the same as the previous procedure
Therefore, the description is omitted. In step S20, the setting is performed in this manner.
Unique address is duplicated with another user unit
Is determined. This judgment is made by other user units.
The transmitted signal is stored in the storage location ADD.
The determination is made based on whether or not the address matches the unique address. A
If the addresses match, it is determined that the address is
In step S21, clear its own value and set the address again.
Require the heat source side unit. Output from the heat source side unit
When a signal indicating the end of address setting
Proceed to step S22 to end address setting and start normal operation
I do. FIG. 7 is a flow chart shown in FIGS.
To automatically set the address of the user side unit using
It is a time chart. Heat in this time chart
The address (AD) of the source unit is 20 and the user side
Unit addresses 21 to 24 are arbitrarily assigned.
Therefore, the unit of address AD = 21 to 24 is
It is determined at the time of address setting whether the
Is unknown. Note that this assigned address is known.
The way to know is to know from the display on the remote controller
Is possible. First, the heat source side unit and the utilization side unit
When the activation is confirmed, each user side unit is random
After the delay time specified in
Output a signal. In the time chart of FIG. 7, the delay time (T
1 to T4) satisfy the relationship of T1 <T2 <T3 <T4.
It is decided as follows. When the delay time T1 has elapsed, the user-side unit
The address set on the communication line 17 consists of "201B56".
Outputs the fixed request signal. At this time, the heat source side unit
The signal output to the communication line 17 is
Receive. Based on the received signal, the heat source side unit
Performs address selection. At this time, any user still
Since the unit address is not set, the smallest
Value "21" is selected as the set address. Address
When the heat source is selected, the heat source side unit
The address setting signal to be the destination address
Output to the communication line 17. User side user who output signal "201B56"
After the output of this signal, the unit will output the signal for a predetermined time (S).
Waiting for reception. This user side unit
Receives a signal output from the heat source unit to the communication line during
If received, the destination address of the received signal
Address as the unique address of the unit, and
Signal "202156" with the dress as the source address
Output to the communication line. The heat source side unit is a destination add
Address selected and set as the source address
Setting by receiving the signal via the communication line
Address is set as the user unit address.
Signal is received and the signal is received for the next address setting.
Move to standby state. The user unit whose address is set is
Until a signal indicating the end of address setting is received,
A determination is made as to whether or not duplication occurs. Address duplication
If an error occurs, clear its own address and re-address
To the heat source side unit. This address duplication
Occurs when the heat source side unit is
The signal output from the unit cannot be received, and the
This is the case when specification is made. Next, after the delay time (T2), another user side user is required.
The unit passes the address setting request signal “201B56”.
The signal is output to the signal line 17 and the same address setting as above is performed.
You. At this time, the heat source side unit is already
Since “21” is registered as an address, the next address
“22” is given to the user side address that output this signal.
It is. In the same manner, the address of the user side unit
Are set to “23” and “24”, and all user-side
The address setting of the switch is completed (the user
The number of units and the
Judge the end of address setting when the numbers match)
And a signal indicating the end of address setting is output to the communication line 17.
Shift to normal operation. The delay times T1 to T4 correspond to the above-described series of times.
Interval at which the address setting process can be completed (about 20 mm seconds)
Degrees) is set to be maintained. In this embodiment, as described above,
Set the address of each unit on the heat source side, and
The compressor is operated in units of
When the corresponding user unit is determined, the group
The address setting of the user side unit is performed in units. In this address setting, step S in FIG.
31 or as apparent from step S1 of FIG.
When the source unit is operated, the
For the operating heat source side unit,
The corresponding address is automatically set via a communication line. The temperature change of the user side unit at this time is shown in FIG.
As shown in FIG. 2, use in the use side units 4 to 16
Temperature sensor 51 provided on the gas side of the side heat exchanger 35,
Or any of the temperature sensors 53 provided on the liquid side
Is detected by By these temperature sensors 51 and 53
When detecting a temperature change, a part where a large temperature change does not appear
Temperature measurement at the position not only increases the measurement time, but also
A measurement error occurs and an accurate correspondence cannot be determined. For example, referring to FIG. 2, during the heating operation,
The refrigerant flows in the direction shown by the dotted line. During this heating operation,
Normally, the valve opening of the child expansion valve 47 is widely opened.
On the gas side of the side heat exchanger 35, the flow of refrigerant into
What causes the temperature change compared to the liquid side of the use side heat exchanger 35
It quickly and largely appears. In contrast, during cooling operation, the electronic
If the valve opening of the expansion valve 47 is too large, the compressor 31
During cooling operation, the electronic expansion valve
It is common to narrow the valve opening of 47. During this cooling operation
The refrigerant flows in the direction shown by the solid line,
When rotating, the gas side of the use side heat exchanger 35
Temperature change does not appear, but rather large temperature change quickly on the liquid side
Appears. In this embodiment, the use side units 4-1
First, to accurately detect the temperature change of 6 in a short time,
The ad is added during either cooling operation or heating operation.
Configuration can be set automatically. Second, in step S31 of FIG.
Alternatively, in step S1 of FIG.
Address automatically according to the temperature detected by the temperature sensor 53
During heating operation, the temperature is detected by the temperature sensor 51 on the gas side.
The address is automatically set according to the output temperature. In this embodiment, the temperature change is more likely to appear.
The temperature change is detected using the temperature sensor of
Automatic address setting within a short period of time during both rotation and heating operations
I can do it for sure. Also, using the above-mentioned automatic address setting method,
Then, the compressor of the heat source unit is operated to operate the
By flowing the refrigerant through the heat source unit,
The corresponding use side unit can be determined. Heat source side
Group consisting of units and user side units (air conditioner
If "Waki" is selected, the address setting within that group will be
So you can add ads between groups without considering other groups.
Addresses can be set without overlapping addresses. That is, all of the plurality of air conditioners are set in the same communication mode.
When connected to the signal line, the address
Addresses can be set automatically without duplication of addresses.
It produces various effects. [0067] According to the present invention, the temperature change is more likely to appear.
The temperature change was detected using the temperature sensor of
In both the cooling operation and the heating operation, the automatic address setting is short.
Can be done accurately in time

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic diagram of an air conditioning system showing one embodiment of the present invention. FIG. 2 is a refrigerant circuit diagram illustrating a refrigeration cycle of the air conditioner. FIG. 3 is a flowchart showing a main operation of the heat source side unit when performing automatic address setting. FIG. 4 is a diagram showing a procedure for setting an address of a heat source side unit. FIG. 5 is a flowchart of a heat source side unit when performing automatic address setting of a use side unit. FIG. 6 is a flowchart illustrating an address setting operation of a use side unit. FIG. 7 is a time chart when performing automatic address setting of a user-side unit. [Explanation of Signs] 1-3 Heat source side unit 4-16 User side unit 17 Communication lines 51, 53 Temperature sensor

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Claims (1)

(57) [Claims 1] A heat source side unit and a plurality of utilization side units connected to the heat source side unit via the same communication line, and the heat source side unit is operated. case, the use-side unit temperature change is detected, the address corresponding to this operation the heat source side unit, the automatic address setting system for an air conditioner for automatically setting via said communication line, said air conditioner The cooling operation and the heating operation are
And capable, respectively provided temperature sensors in the gas side and the liquid side of the utilization-side heat exchanger in the utilization-side unit,
The address can be automatically set at the time of either the cooling operation or the heating operation, and the address is automatically set according to the temperature detected by the liquid-side temperature sensor during the cooling operation, and the gas-side temperature during the heating operation. An address automatic setting system for an air conditioner, wherein the address is automatically set according to a temperature detected by a sensor.