JP2563357B2 - Air conditioner with ability registration function - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to capacity control of a compressor of an air conditioner in which a plurality of indoor units are connected to one outdoor unit.

2. Description of the Related Art In recent years, the number of multi-types that control multiple indoor units with one outdoor unit is increasing, and this multi-type air conditioner can easily and accurately detect the load of each indoor unit and perform capacity control. It is becoming a big issue how to do.

Hereinafter, the conventional air conditioner with a capability registration function as described above will be described with reference to the drawings.

FIG. 3 shows a conventional air conditioner with a registration function (not shown).
FIG. 3 is a block diagram of the above.

1 is a compressor, 2 is an inverter that linearly changes the capacity of the compressor, 3 is a capacity registration setting device for the indoor unit (No. 1) installed in the outdoor unit, and 4 is an indoor unit installed in the outdoor unit (Unit 2) capacity registration setting device, 5 is an indoor unit (Unit 3)
Capacity registration setting device (there are as many capacity registration setting devices as there are indoor units), 6 is a control line between the indoor unit 1 and the outdoor unit, 7 is a control line between the indoor unit 2 and the outdoor unit, and 8 is A control line between the indoor unit No. 3 and the outdoor unit (hereinafter, each of the indoor units has an outdoor unit and a dedicated control line), and 9 is a controller that issues a capacity control command to the inverter according to the sum of the capacity registration set values. It is composed of these.

The operation of the air conditioner with the capability registration function configured as described above will be described below.

First, in the outdoor unit, set the capacity of the capacity registration setting unit with the specified unit number of each connected indoor unit, and connect the control line with the outdoor unit to the predetermined position for each indoor unit to operate. .

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention However, in the above-described configuration, when registering the capacity of the indoor unit, the designation of the unit number and the connection control line attachment position between the indoor unit and the outdoor unit must match, and Difficulties in construction due to having to install the control lines from the indoor units that are far away from each other to the outdoor unit, and the disadvantage that the number of control connections increases due to the additional indoor units and the mounting structure for the control connections of the outdoor unit becomes large. Had.

Means for Solving Problems In order to solve the above problems, the present invention relates to a plurality of indoor units, number setting means for setting the number of indoor units, and capacity registration setting for setting the capacity of the indoor units. Means, indoor control means for transmitting the machine data set by the machine setting means and the capacity setting data set by the capacity registration setting means to the outdoor unit through a control line of one system, respectively, The outdoor unit has a compressor, an inverter that linearly changes the capacity of the compressor, and the total capacity of all indoor units is detected based on the capacity setting data of each indoor unit transmitted from the indoor control means. Capacity registration detection means, abnormality notification means for notifying an abnormality in capacity setting when the total capacity of all indoor units detected by the capacity registration detection means exceeds a predetermined value, and all indoor units detected by the capacity registration detection means The outdoor control means for issuing an operation command to the inverter according to the total capacity of all the indoor units is provided only when the total capacity of the above is less than a predetermined value.

Effect of the Invention According to the present invention, since the indoor controller and the outdoor controller can transmit the data of the capability registration of each indoor unit and the data of the unit setting as one block, the indoor controller and the outdoor controller can transmit the data of the indoor unit. By simply registering and setting the number of units, the controller of the outdoor unit can detect the capacity registration state of each indoor unit and easily change the capacity of the compressor, and there is one control line for the indoor unit and the outdoor unit. Just by connecting, the construction is simplified and the mounting structure for the control connection of the outdoor unit is simplified.

Example Hereinafter, an air conditioner with a capability registration function according to an example of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram of an air conditioner with a capability registration function according to an embodiment of the present invention.

In FIG. 1, 1 is a compressor, 2 is an inverter that linearly changes the capacity of the compressor 1, 3 is a capacity registration detecting device for detecting the total capacity of all indoor units, and 4 is a capacity registration detecting device 3. An outdoor controller that issues an operation command to the inverter 2 according to the total capacity of all indoor units only when the total capacity of all indoor units is less than or equal to a predetermined value. 5a, 5b, 5c are installed in each indoor unit Unit number setters 6a, 6b, 6c to be set are capacity registration setters 7a, 7a provided in each indoor unit to set the capacity of the indoor unit.
b and 7c are indoor controls that are installed in each indoor unit and transmit the unit data set by the unit setting devices 5a, 5b, 5c and the capacity setting data set by the capacity registration setting devices 6a, 6b, 6c to the outdoor unit. Units, 8 and 9 are control lines for transmitting data between indoor units, 1
0 is a control line for transmitting data between each indoor unit and the outdoor unit, 11 is an error display that indicates an error when the total capacity of all indoor units detected by the capacity registration detection device 3 exceeds a predetermined value. It is a light.

Regarding the air conditioner with a capacity registration function configured as described above, one example of correspondence of capacity control by data transmission of a machine and capacity registration settings will be described.

First, Fig. 2 (1) shows the configuration and setting contents of the No. setter and capacity registration setter in the indoor unit, and the No. and capacity setting can be set by turning each number of the setter ON / OFF. it can. That is, the numbers 1 and 2 indicate the setting of the machine, and the number 3
Indicates ability setting. If the numbers 1 and 2 are off, the first unit,
If the number 1 is ON and the number 2 is OFF, then it is Unit 2, and the number 1 is OFF and 2
If is ON, the No. 3 machine (if the numbers 1 and 2 are ON respectively, the No. 4 machine will be set) can be set. If the number 3 is OFF, the A capability (the capability is small and the capability value is 1) is set, and if the number 3 is ON, the B capability (the capability is large and the capability value is 2) is set.

FIG. 2 (2) shows a data transmission system between the indoor controller and the outdoor controller, and each indoor controller has one system with the number of units, capacity setting data, and indoor air conditioning load state data as one block. Data is transmitted to the outdoor controller via the connection control line. The outdoor controller sets the block data of each indoor controller to 2 blocks and 3 blocks for each unit.
Blocks up to 3 blocks are received as one-word configuration through one system connection control line. Then, the outdoor controller grasps the load condition of the indoor unit from the data contents of these 1 words, and according to the data contents, the outdoor controller issues an operation command to the inverter as shown in Table-1 (the total air conditioning load condition of the indoor unit is small. When the operation command is a small capacity command, when the load condition is standard, the operation command is a standard capacity command, and when the load condition is large, the operation command is a large capacity command) to control the capacity of the compressor.

The operable range is set according to the total number of capacity setting values of indoor units as shown in Table-2. When the total number of capacity setting values exceeds 6, the system capacity control range is exceeded and it is not possible to operate outdoors. The controller judges and notifies the abnormality of capacity setting by lighting the abnormality indicator lamp, and does not issue an operation command to the inverter.

As described above, in a plurality of indoor units, the number setting unit 5a, 5b, 5c to set the number of indoor units, capacity registration setting unit 6a, 6b, 6c to set the capacity of the indoor unit, and the number setting unit Indoor controller 7a, 7b for transmitting the machine number data set by 5a, 5b, 5c and the capacity setting data set by the capacity registration setters 6a, 6b, 6c to the outdoor unit through the control line 10 of one system , 7c respectively, and the outdoor unit includes a compressor 1, an inverter 2 that linearly changes the capacity of the compressor 1, and indoor unit capacity setting data transmitted from indoor controllers 7a, 7b, and 7c. A capability registration detecting device 3 for detecting the total capability of all indoor units, and an anomaly display for displaying capability setting abnormality when the total capability of all indoor units detected by the capability registration detecting device 3 exceeds a predetermined value. Only when the total capacity of the lamp 11 and all indoor units detected by the capacity registration detection device 3 is less than or equal to a predetermined value, the total capacity of all indoor units is set. By providing the outdoor controller 4 that issues an operation command to the inverter 2 accordingly, the outdoor unit detects the total capacity of all the indoor units by simply setting the unit number and capacity of each indoor unit. It is possible to easily change the capacity of the compressor 1 according to the total capacity. Further, since the control line 10 connecting the indoor unit and the outdoor unit is one system, simplification of connection work of the control line and simplification of the structure of the control connection portion of the outdoor unit can be realized. Further, when the total capacity of all indoor units exceeds a predetermined value, operation is not issued to the inverter 2 and operation is disabled, and an error in the capacity setting is displayed by the error indicator 11 so that the total capacity of all indoor units is It is possible to prevent the air conditioner from failing due to being too large for its capacity, and when the error indicator lamp 11 shows an error, it means that the total capacity of all indoor units is too large to stop the operation. It is easy to understand and the capacity of an indoor unit that requires less driving is reduced or stopped by the user so that the total capacity of all indoor units is within a specified value. By doing so, the air conditioner can be operated (restored). Also, since it is not necessary to keep the total capacity of all indoor units at the maximum capacity setting of each indoor unit in balance with the capacity of the outdoor unit, the total capacity of all indoor units at the maximum capacity setting of each indoor unit Compared to an air conditioner whose capacity is balanced with the capacity of the outdoor unit, the flexibility in increasing the number of indoor units installed and increasing the maximum capacity of the indoor unit is improved, and comfortable air conditioning is obtained. Increase opportunities.

EFFECTS OF THE INVENTION As described above, the present invention is set to a plurality of indoor units by the number setting unit for setting the number of indoor units, the capacity registration setting unit for setting the capacity of the indoor unit, and the number setting unit. Indoor unit for transmitting the unit number data and the capacity setting data set by the capacity registration setting unit to the outdoor unit through a control line of one system, and the outdoor unit includes a compressor and the compression unit. An inverter that linearly changes the capacity of the indoor unit, a capacity registration detecting unit that detects the total capacity of all indoor units based on the capacity setting data of each indoor unit transmitted from the indoor control unit, and the capacity registration detecting unit. Detected when the total capacity of all indoor units exceeds a predetermined value, an abnormality notification means for notifying an abnormality in capacity setting, and only when the total capacity of all indoor units detected by the capacity registration detection means is below a predetermined value. Indoor By providing the outdoor control means for issuing an operation command to the inverter according to the total capacity of the indoor units, the outdoor unit can detect the total capacity of all indoor units simply by setting the unit number and capacity of each indoor unit. Therefore, the capacity of the compressor can be easily changed according to the total capacity of all the indoor units. Moreover, since the control line connecting the indoor unit and the outdoor unit is one system,
It is possible to simplify the control line connection work and the structure of the outdoor unit control connection. Also, when the total capacity of all indoor units exceeds a specified value, operation is not issued to the inverter, operation is disabled, and the abnormality notification means notifies the capacity setting abnormality, so the total capacity of all indoor units becomes the capacity of the outdoor unit. On the other hand, it is possible to prevent a failure of the air conditioner due to being too large, and when the abnormality notifying means notifies the abnormality, it is easily understood that the operation is stopped because the total capacity of all indoor units is too large, In order for the total capacity of all indoor units to be within the specified value, the user may reduce the capacity of indoor units that require less driving or stop them, or reduce the capacity of indoor units whose capacity setting is too large. Operates the air conditioner (restore)
Can be made. Also, since it is not necessary to keep the total capacity of all indoor units at the maximum capacity setting of each indoor unit in balance with the capacity of the outdoor unit, the total capacity of all indoor units at the maximum capacity setting of each indoor unit Compared to an air conditioner whose capacity is balanced with the capacity of the outdoor unit, the flexibility in increasing the number of indoor units installed and increasing the maximum capacity of the indoor unit is improved, and comfortable air conditioning is obtained. Increase opportunities.

[Brief description of drawings]

FIG. 1 is a block configuration diagram of an air conditioner with a capability registration function according to the present invention, FIG. 2 (1) is a configuration and setting content explanatory diagram of a number setting and capability registration setting device of the present invention, and FIG. 2 (2). Is a data transmission system diagram of an indoor unit and an outdoor unit of the present invention, and FIG. 3 is a block configuration diagram of a conventional example. 1 ... Compressor, 2 ... Inverter, 3 ... Capability registration detection device, 4 ... Outdoor controller, 5 ... Unit setting device, 6 ... Capacity registration setting device, 7 ... Indoor controller, 8, 9,10 …… Control line.

Claims (1)

(57) [Claims] 1. An air conditioner in which a plurality of indoor units are connected to one outdoor unit, and a unit setting means for setting an indoor unit number to the plurality of indoor units, and an indoor unit. Capacity setting unit for setting the capacity of the unit, the unit data set by the unit setting unit and the capacity setting data set by the unit setting unit are transmitted to the outdoor unit through a control line of one system. An indoor control unit is provided, and the outdoor unit has a compressor, an inverter that linearly changes the capacity of the compressor, and a total capacity setting data of each indoor unit transmitted from the indoor control unit. Capacity registration detection means for detecting the total capacity of the indoor units, abnormality notification means for notifying an abnormality of capacity setting when the total capacity of all indoor units detected by the capacity registration detection means exceeds a predetermined value, and the capacity registration The detection means An air conditioner with a capability registration function, comprising: an outdoor control means for issuing an operation command to the inverter according to the total capacity of all indoor units when the total capacity of all the indoor units issued is below a predetermined value. .