Air conditioner system
A technology for air conditioners and indoor units, which is used in air conditioning systems, control/regulation systems, general control systems, etc., and can solve problems such as different voltages, different phases, and failure to fully consider the miswiring of transmission lines.
Inactive Publication Date: 2004-07-14
HITACHI JOHNSON CONTROLS AIR CONDITIONING INC
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Problems solved by technology
[0004] In the above-mentioned prior art, miswiring of transmission lines between air conditioners is not fully taken into account, and operating data of air conditioners need to be sampled during inspection and maintenance work, and limitations of wiring distances due to wiring length or data deterioration caused by the surrounding environment are not taken into account. Sometimes the voltage or phase of the indoor unit is different, etc.
Method used
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[0018] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. 1 is a structural diagram of an air conditioner, which has a power line 3 connected to an outdoor unit 1 equipped with a compressor, a power line 4 connected to an indoor unit 2, and conversion devices 6A and 6B for converting signals from power line superimposed signals to wireless signals, The centralized control device 9 for controlling the operation of the air conditioner connects the outdoor unit 1 and the indoor unit 2 with pipelines to form a refrigeration cycle.
[0019] The outdoor unit 1 is supplied with 200V 3-phase power from the outdoor power line 3, and is equipped with an outdoor transceiver 5A for superimposing signals on the power line. The data (transmission information) determined as the basic format is transmitted to the outdoor power line 3 via the outdoor transceiver device 5A for superimposing the signal on the power line. The data are ...
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An air-conditioning system having a plurality of air conditioners, each air conditioner including an outdoor transmission / receiving unit for transmitting by superposing the operation data on an outdoor power line for supplying power to an outdoor unit and receiving the operation data superposed on the outdoor power line, an indoor transmission / receiving unit for transmitting by superposing the operation data on an indoor power line for supplying power to an indoor unit and receiving the operation data superposed on the indoor power line, an outdoor conversion unit for transmitting by converting the operation data superposed on the outdoor power line into a signal and receiving and superposing the signal on the outdoor power line, and an indoor conversion unit for transmitting by converting the operation data superposed on the indoor power line into a signal and receiving and superposing the signal on the indoor power line.
Description
technical field [0001] The present invention relates to an air conditioner in which a plurality of indoor units and outdoor units are connected, and is particularly suitable for large-scale air conditioners in buildings and the like and maintenance thereof. Background technique [0002] Conventionally, in relatively large-scale air conditioners, it is known to connect a plurality of air conditioners to a network via a gateway in order to cope with maintenance and system expansion, as described in JP-A-9-79654, for example. [0003] In addition, in order to reduce the cost of various signal line wiring projects, in the outdoor unit and indoor unit, the power line superimposed signal is superimposed on the AC voltage of the power supply line, such as a high-frequency signal of 10 to 450 kHz, and the signal line and the power line are shared. The system described in JP-A-5-272775. [0004] In the above-mentioned prior art, miswiring of transmission lines between air conditione...
Claims
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IPC IPC(8): F24F11/02F24F11/00G05B15/02H04Q9/00
CPCF24F2011/0067F24F11/006F24F2221/32F24F2011/0068G05B15/02F24F11/30F24F11/62F24F11/54F24F11/56
Inventor 山梨良幸佐藤敬治尾崎正美望月正道杉山達也分校教之
Owner HITACHI JOHNSON CONTROLS AIR CONDITIONING INC