JPH07103558A - Controller for air-conditioner - Google Patents

Abstract

PURPOSE:To obtain a controller for an air-conditioner, capable of using a common outdoor unit by sending the data of air-conditioner type from an indoor unit to the outdoor unit at the time of supplying electric power. CONSTITUTION:At the time of supplying electric power, a microcomputor 5 in an indoor side control part 1 sends the data of air-conditioner type stored in EEPROM 3 through a communication circuit 4 to an outdoor side control part 2. A microcomputor 8 in the outdoor side control part 2 receives the type data through a communication circuit 7, stores the same in EEPROM 6 and selects the control data corresponding to the type data from a control data group which has previously been stored in EEPROM 6, thereby controlling an outdoor unit.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control device for a separate type air conditioner having an indoor unit and an outdoor unit.

[0002]

2. Description of the Related Art FIG. 11 shows, for example, Japanese Patent Laid-Open No. 64-7064.
It is a block diagram which shows the conventional air conditioner shown by the 0th publication, while the outdoor unit A has the electric component box 49, and the indoor units B, C, and D have the electric component box 50, and it is a remote control type. It has a driving operation unit 51. In addition, as shown in FIG. 9, the electrical component box 5 for the indoor unit
Reference numeral 0 is a control device 55 mainly composed of a microcomputer.
Built in. The control device 55 has a memory 56 and a terminal 57, and the operation unit 51 has an inspection lamp 58.
have. Further, as shown in FIG. 10, the electric component box 49 for the outdoor unit has a built-in control device 52 mainly composed of a microcomputer, and the control device 52 includes the memory 5
3 and a terminal 54. The controller 49 of the outdoor unit A and the controllers 50 of the indoor units B, C, D are signal-connected.

Next, the operation will be described. Whether the control device 52 of the outdoor unit A is a type only for cooling,
Model data (machine number, etc.) indicating whether it is a heat pump type capable of cooling / heating or a variable capacity type capable of continuous operation of cooling / heating capacity is stored in advance in the memory 53.
The model data is read out when the power is turned on and transferred to the respective control units 55 of the indoor units B, C and D. The controller 55 of the indoor units B, C, and D stores model data representing the heat exchanger capacity of its own in the memory 56 in advance, and the model data is read when the power is turned on, and the controller 52 of the outdoor unit A. Transfer to. On the other hand, the control device 52
Stores the model data transferred from the indoor units B, C and D in a predetermined area of the memory 53. Controller 55
Stores the model data transferred from the outdoor unit A in a predetermined area of the memory 56. Then, the control device 5
2 and 55, when the high-pressure side pressure of the refrigeration cycle abnormally rises in the operating state, an excessive current flows to the compressor motor, or a power supply voltage drops, an inspection lamp 58 of the operation unit 51 Blinking.
This lighting requests maintenance and inspection services. Further, the control devices 52 and 55 store the contents of the abnormality in the memories 53 and 56.
Are updated and stored in specific areas. At the time of maintenance and inspection service, when an operator connects a check device to the terminal 57 of the control device 55 in the indoor unit B and starts wiring check and operation check, the indoor unit B
The control device 55 reads out the entire contents of the memory 56 and outputs it to the checking device through the terminal 57.
The checking device has a monitor and the contents of the memory 56 are shown to the operator. That is, the model data of the indoor unit B,
The worker is informed of the model data of the outdoor unit A and the details of the abnormality. In addition, the worker is
When a check device is connected to the terminal 54 of the control device 52 in and the wiring check and the operation check are started,
The control device 52 of the outdoor unit A reads all the contents of the memory 53 and outputs it to the checking device through the terminal 54. In this case, the worker is informed of the model data of the outdoor unit A and further details of the abnormality.

[0004]

Since the conventional air conditioner is constructed as described above, it cannot be shared because it is necessary to provide the indoor unit and the outdoor unit with model-specific control data. Also, since the memory is rewritten every time the power is turned on, there is a problem in the life and reliability of the memory.

The present invention has been made in order to solve the above-mentioned problems, and can control an air conditioner in which the outdoor unit or the indoor unit can be shared and the reliability of the memory can be improved. The purpose is to obtain the device.

[0006]

A control device for an air conditioner according to claim 1 is an air conditioner having communication means for exchanging information between an indoor unit and an outdoor unit, wherein the indoor unit means a model. First storage means for storing data, control means for transmitting the model data only after turning on the main power,
The outdoor unit includes a second storage unit that stores model data transmitted from the indoor unit, and a comparison unit that compares the model data transmitted from the indoor unit this time with the previously stored model data, Means for writing to the second storage means, third storage means for storing control data of a plurality of models, and control data corresponding to the model data are selected according to the comparison result of the comparison means. And means.

A controller for an air conditioner according to a second aspect of the present invention is an air conditioner having a remote controller for transmitting a signal for controlling the operation of the indoor unit, wherein the remote controller transmits model data indicating a model, and the indoor unit. Is a fourth storing means for storing the model data transmitted from the remote controller, a comparing means for comparing the model data transmitted this time with the previously stored model data, and the fourth storing means according to the comparison result of the comparing means.
To the storage means, a fifth storage means for storing control data of a plurality of models, and a means for selecting control data corresponding to the model data.

According to a third aspect of the present invention, in the air conditioner control apparatus according to the first or second aspect, when the transmitted model data is other than the applicable model data, a means for displaying an abnormality. It is equipped with.

[0009]

In the air conditioner control device according to the first aspect of the present invention, the outdoor unit can select the dedicated data according to the model by transmitting the model data from the indoor unit to the outdoor unit, so that the outdoor unit can be shared.

In the air conditioner control device according to the second aspect of the present invention, the indoor unit can select the dedicated data according to the model by transmitting the model data to the indoor unit from the remote controller, so that the indoor unit can be shared.

When the combination of the indoor unit and the outdoor unit is erroneously installed, the control device for an air conditioner according to claim 3 can judge and display this error only by adding software, so that the serviceability can be improved at low cost. Can be achieved.

[0012]

【Example】

Example 1. Embodiment 1 of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram of the first embodiment, 1 is an indoor side control unit that controls the operation of the indoor unit, 2 is an outdoor side control unit that controls the operation of the outdoor unit, and the indoor side control unit 1 is a model There is a communication circuit 4 for communicating between the EEPROM 3 for storing data and the outdoor control section 2, and 5 reads the model data stored in the EEPROM 3 and sends the model data to the outdoor control section 2 using the communication circuit 4. The microcomputer 6 is an EEPROM in which control data groups of a plurality of types of models are stored, 7 is a communication circuit for communicating with the indoor side control unit 1, and 8 is an EEPROM 6 which receives the model data from the indoor side control unit 1. Is a microcomputer for selecting control data corresponding to a model from a control data group by comparing it with the model data stored in, and 9 is a signal line connecting the indoor side control unit 1 and the outdoor side control unit 2. A.

FIG. 2 is a flow chart showing the operation of the indoor control section. It starts when the original power is turned on. At step 10, the data (model data) indicating the model stored in the EEPROM 3 is read, and step 11
The model data is transmitted using the communication circuit 4. In step 12, in order to determine whether or not the outdoor side control unit 2 has successfully received the model data, it is determined whether or not the reception OK signal transmitted when the outdoor side control unit 2 has normally received is received. . If the outdoor control unit 2 has not received the model data, the process returns to step 11 and transmits the model data again. If model data is received, proceed to step 13,
Perform normal communication (operation mode, temperature difference code, etc.).

FIG. 3 is a flow chart showing the operation of the outdoor side control section. In step 14, the reception of model data from the indoor control unit 1 is awaited, and if it is received, the process proceeds to step 15 and a reception OK signal of model data is transmitted using the communication circuit 7. In step 16, the data is read from the storage area of the model data of the EEPROM 6. Step 17
At, the model data and EEPRO transmitted from the room
The model data stored in M6 are compared, and if they are different, the process proceeds to step 18, and the model data transmitted from the room is written in the model data storage area of the EEPROM 6 and proceeds to step 19. If the data is the same, the process goes to step 19 without writing the model data. At step 19, control data corresponding to model data is selected from a plurality of control data groups (frequency data etc.) stored in the EEPROM 6, and at step 20, normal control is started based on the control data.

In the first embodiment, for example, in the conventional separation type air conditioner having a rated cooling capacity of 7.8 Kw, the indoor unit type is a wall-mounted type, a floor-standing type, a wall-embedded type, a ceiling-embedded type, and four types of indoor units. On the other hand, it is necessary for the outdoor unit to produce different types of control data such as the rated frequency data of the compressor, but in the first embodiment, all four types of control data are provided, and the model data signal from the indoor unit is used. By determining the control data, it becomes possible to cope with the production of one type of outdoor unit. Also, a memory element (EEPROM, etc.)
Has a limit to the number of times data can be written, and
The storage element is also used to store other data (operation details, maximum outside temperature data, etc.), and writing is performed frequently, so it is necessary to reduce the number of writings as much as possible. In this embodiment, once stored at the time of installation, it is not necessary to write it for later comparison.

Example 2. Although the above-described first embodiment shows an example for making the outdoor unit common, the indoor unit can be made common by changing the control system of the indoor control unit 1 and the outdoor control unit 2.

Embodiment 3. The third embodiment of the present invention will be described below with reference to the drawings. FIG. 4 is a block diagram of the third embodiment, in which 1 is an indoor control unit for controlling the operation of the indoor unit, 3 is an EEPROM in which a plurality of types of control data groups are stored,
Reference numeral 23 is a receiving circuit for receiving the signal 22 from the wireless remote controller 21, and 5 is the model data included in the signal 23. The model data stored in the EEPROM 6 is compared with the control data corresponding to the model from the control data group. Is a microcomputer for selecting.

FIG. 5 is a flow chart showing the operation of the indoor control section. The wireless remote controller 21 has data (model data) meaning a model incorporated in a part of the signal 22 to be transmitted. It starts when the main power is turned on, and in step 24, the model data is read from the signal 22. In step 25, the model data stored in the EEPROM 3 is read, and in step 26 it is determined whether the model data transmitted from the wireless remote controller 21 and the model data stored in the EEPROM 3 are the same. If the data is different, the process proceeds to step 27, the new model data is written in the model data storage area of the EEPROM 3, and the process proceeds to step 28. If the model data is the same in step 26, the process proceeds to step 28 without rewriting the model data. At step 28, control data corresponding to model data is selected from a plurality of control data groups (fan speed data etc.) stored in the EEPROM 6, and at step 29 normal control is started based on the control data.

In the third embodiment, the appearance of the indoor unit is exactly the same, and by changing only the wind speed and the wind direction data, it becomes possible to support three models having a cooling capacity of 2.2 Kw, 2.5 Kw, and 2.8 Kw. At present, it is necessary to produce indoor units that differ only in control data, but according to the third embodiment, one type of indoor unit can handle three models.

Example 4. Embodiment 4 of the present invention will be described below with reference to the drawings. FIG. 6 is a block diagram of the fourth embodiment, 1 is an indoor side control unit that controls the operation of the indoor unit, 2 is an outdoor side control unit that controls the operation of the outdoor unit, and the indoor side control unit 1 is a model There is a communication circuit 4 for communicating between the EEPROM 3 for storing data and the outdoor side control unit 2, and 5 is an EEP
A microcomputer that reads the model data stored in the ROM 3 and transmits the model data to the outdoor control unit 2 using the communication circuit 4, and 30 is a display unit that informs of an abnormality when the model is connected to the outside, 6 is an EEPROM in which control data groups of a plurality of types of models are stored, 7
Is a communication circuit that communicates with the indoor control unit 1, and 8 is control data that receives the model data from the indoor control unit 1 to determine whether or not it is compatible and to compare with the model data stored in the EEPROM 6. A microcomputer for selecting control data corresponding to a model from a group, and 9 is a signal line connecting the indoor control unit 1 and the outdoor control unit 2.

FIG. 7 is a flow chart showing the operation of the indoor control section. It starts when the original power is turned on. In step 31, the data (model data) indicating the model stored in the EEPROM 3 is read, and step 32
The model data is transmitted using the communication circuit 4. In step 33, it is determined whether or not the outdoor side control unit 2 has received a reception OK signal to be transmitted when the outdoor side control unit 2 normally receives in order to determine whether or not the model data has been normally received. . If the outdoor control unit 2 has not received the model data, the process returns to step 11 and transmits the model data again. When the model data is received, the process goes to step 34 to judge the signal transmitted by the outdoor side control unit 2 as to whether the model is compatible or not, and if the model is not compatible, the process goes to step 35 to display an abnormality. If it is determined in step 34 that it is possible, the process proceeds to step 36 and normal communication (operation mode, temperature difference code, etc.) is performed. FIG. 8 is a flowchart showing the operation of the outdoor side controller. In step 37, the reception of the model data from the indoor control unit 1 is awaited, and when it is received,
In step 15, the reception OK signal of the model data is transmitted using the communication circuit 7. EEPROM6 in step 16
Read the data from the storage area of the model data of. In step 17, the model data and E sent from the room
The model data stored in the EPROM 6 are compared. If they are different, the process proceeds to step 18, and the model data transmitted from the room is written in the model data storage area of the EEPROM 6 and proceeds to step 19. If the data is the same, the process goes to step 19 without writing the model data. At step 19, control data corresponding to model data is selected from a plurality of control data groups (frequency data etc.) stored in the EEPROM 6, and at step 20, normal control is started based on the control data.

In the air conditioner control apparatus according to the fourth embodiment, it is possible to determine and display that the air conditioner is installed in an incorrect combination by only adding software, so that the serviceability can be improved at low cost. Can be achieved.

[0023]

According to the air conditioner control device of the present invention, in the air conditioner having the communication means for exchanging information between the indoor unit and the outdoor unit, the indoor unit stores model data indicating a model. A second storage means for storing the model data transmitted from the indoor unit, the first storage means and the control means for transmitting the model data only after the main power is turned on; Comparing means for comparing the model data transmitted this time from the indoor unit with the model data previously stored, a means for writing to the second storage means according to the comparison result of the comparing means, and a plurality of models The third storage means for storing the control data of No. 1 and the means for selecting the control data corresponding to the model data are provided. Therefore, by transmitting the model data from the indoor unit to the outdoor unit, the outdoor unit Machine is a model It is common for the outdoor unit for the dedicated data by selection.

A control device for an air conditioner according to a second aspect is an air conditioner having a remote controller for transmitting a signal for controlling the operation of the indoor unit, wherein the remote controller transmits model data indicating a model, and the indoor unit. Is a fourth storing means for storing the model data transmitted from the remote controller, a comparing means for comparing the model data transmitted this time with the previously stored model data, and the fourth storing means according to the comparison result of the comparing means.
To the control means, a fifth storage means for storing control data of a plurality of models, and a means for selecting control data corresponding to the model data. By transmitting model data to the indoor unit, the indoor unit can select dedicated data depending on the model, so that the indoor unit can be shared.

According to a third aspect of the present invention, there is provided an air conditioner control device which, in the air conditioner control device according to the first or second aspect, displays an abnormality when the transmitted model data is other than compatible model data. When the combination of the indoor unit and the outdoor unit is erroneously installed, the error can be determined and displayed only by adding software, so that the serviceability can be improved at low cost.

[Brief description of drawings]

FIG. 1 is a block diagram showing a first embodiment of the present invention.

FIG. 2 is a flowchart showing the operation of the indoor side control unit of the first embodiment.

FIG. 3 is a flowchart showing the operation of the outdoor side control unit according to the first embodiment.

FIG. 4 is a flowchart showing an operation of an indoor side control unit according to the third embodiment of the present invention.

FIG. 5 is a flowchart showing an operation of an outdoor side control unit of the third embodiment.

FIG. 6 is a block diagram showing a fourth embodiment of the present invention.

FIG. 7 is a flowchart showing the operation of the fourth embodiment.

FIG. 8 is a flowchart showing the operation of the fourth embodiment.

FIG. 9 is a diagram showing a configuration of a control device for an indoor unit of a conventional air conditioner and its peripheral portion.

FIG. 10 is a diagram showing a configuration of a control device for an outdoor unit in the air conditioner.

FIG. 11 is a diagram showing an overall configuration of the air conditioner.

[Explanation of symbols]

 1 Indoor side control unit 2 Outdoor side control unit 3 Indoor side EEPROM 4 Indoor side communication circuit 5 Indoor side microcomputer 6 Outdoor side EEPROM 7 Outdoor side communication circuit 8 Outdoor side microcomputer 40 Wireless remote control 41 Transmission signal

Claims (3)

[Claims] 1. An air conditioner having a communication unit for exchanging information between an indoor unit and an outdoor unit, wherein the indoor unit has a first storage unit for storing model data indicating a model and only after turning on a power source. And a control means for transmitting the model data to the outdoor unit, wherein the outdoor unit stores second model data for storing the model data transmitted from the indoor unit, and model data transmitted from the indoor unit this time. Comparing means for comparing previously stored model data, means for writing to the second storage means according to the comparison result of this comparing means, and third storage means for storing control data of a plurality of models. And a means for selecting control data corresponding to the model data, the control device for the air conditioner. 2. An air conditioner having a remote controller for transmitting a signal for controlling operation of an indoor unit, wherein the remote controller transmits model data indicating a model, and the indoor unit transmits model data transmitted from the remote controller. Fourth storing means for storing, comparing means for comparing the model data transmitted this time and the previously stored model data, and means for writing to the fourth storing means according to the comparison result of the comparing means. An air conditioner control device comprising: a fifth storage unit that stores control data of a plurality of models; and a unit that selects control data corresponding to the model data. 3. The control device for an air conditioner according to claim 1, further comprising means for displaying an abnormality when the transmitted model data is other than applicable model data.