TH12397B - Controller for multi-unit air conditioner - Google Patents

Abstract

Controller for multi-unit air conditioner with one external unit And a number of internal units Including supply DC power External transmit / receive circuits are provided with an external unit and are connected to a DC power source. And a number of internal transmit / receive circuits are organized with a number of internal units. And is connected in series With external transmit / receive circuit via signal cable DC voltage is supplied for transmission. Information from the external unit to the internal unit This reduces the leakage distance of the circuit, the transmission interval can be set independently, the transmission speed can be improved. By using high speed photocoupler, and therefore the operating speed of the internal unit can It will be improved in multi-unit air conditioner with internal unit. One source

Claims (9)

1.Controller for multi unit air conditioner With one external unit being supplied by power From an AC power supply and a number of internal units The supply line generates the first alternating current and A second anesthesia power line to supply a certain amount of internal units with power from the external unit. And a signal cable for sending data to control the work Of multi-unit air conditioner The controller consists of One DC power source is also supplied. External unit for rectifier Alternating current from the power source Alternating current is direct current. One external transmit / receive circuit provided with an external unit. And is connected to a DC power source A number of internal transmit / receive circuits arranged in sequence with units. Within a certain amount And that is connected in series with An external transmit / receive circuit through a signal cable where the DC power supply, an external transmit / receive circuit, a number of internal transmit / receive circuits. And power cable First alternating current Form a closed circuit and where a certain number of internal transmit / receive circuits Is connected as Parallel to each other between signal cables And the first AC power cable 2.Controller for multi unit air conditioner According to Clause 1, it also contains A number of controllers to transmit the data that are arranged in order With external unit And a number of internal units where each of the external transmit / receive circuits and a number of internal transmit / receive circuits Including a transmission switch for distribution with electricity Direct current to A signal cable follows the information transmitted by a number of controllers, each of which is an external transmit / receive circuit and a number of internal transmit / receive circuits, as well as a signal detector for detecting that Is the signal cable being supplied with power? And output the data that was detected according to Data received to a number of controls and where switches and detectors Is connected in series 3.Controller for multi-unit air conditioner According to Clause 2, where each switch consists of A photocoupler including an emitter and a receiver for one of the dispenses. And power cut In one direction 4. Controller For multi-unit air conditioner According to claim 3, where the transmission switch of the external transmit / receive circuit includes a protection circuit for protecting the circuit components in case of not connected to the signal 5.control for multi unit air conditioner According to claim 4, where each photocoupler of the receiver Can withstand high voltage to cut off the AC power supply. In case the signal cable is not connected to AC power supply 6.control for multi unit air conditioner According to Clause 1, it also contains Diode arranged between the external transmit / receive circuit of the external unit and the signal line, which can withstand high voltage to cut off the power. Alternating current, in the event that the signal cable is not connected to an AC power source. 7.Control for multi-unit air conditioner According to Clause 1, it also contains A resistance that is held between the external transmit / receive circuit and the signal line and has a predetermined resistance value. To transmit data simultaneously to each circuit of the internal transmit / receive circuit a certain number of units. Within a certain amount 8.Controllers for multi-unit air conditioners According to claim 7, where the predetermined resistance of external transmit / receive circuits limits short-circuit currents in the event that Circuits between signal cables Of the external unit And the first AC power cable has been short-circuited. 9. Controllers for multi air conditioners Units according to claim 3 also consist of The force detector loudly differs between the signal cables. Of the external unit And one AC power cable for differential voltage sensing and for suspending the transmission switch of external transmit / receive circuits in the event that The signal cable is not connected to AC power 1. 0. Controller for multi unit air conditioner According to claim 9, where the differential pressure detectors include AC detector for detecting AC power from AC power 1 1.Controller for multi unit air conditioner According to claim 10, where the alternating current detector consists of a photocoupler Organized between the signal cable and the distribution line. First alternating current A capacitor connected in parallel with a photocoupler and a transistor that operates according to the photocoupler output. And output of capacitor 1 2.Controller for multi unit air conditioner According to claim 11, where the capacitor of the AC detector controls the supply Current to the emitter of the transmitter switch 1 photocoupler 3.Control methods for multi-unit air conditioners With one external unit And a number of internal units connected to the signal cable consist of steps. (A) supply of external units and number of internal units. One with an a.c. power source (b) a rectifier that is supplied at The procedure for supplying as a direct current (c) setting a number of internal components to the receiving state. At the beginning of the sorting procedure (d) transmitting data by alternating cable distribution. With direct current According to information sent from external units after To set a certain number of internal units to the receiving state at the set procedure and (e) receiving information at each of the units of a certain number of internal units by detecting that A number of internal units Being supplied by electricity Or not at the sending process. 1 4.Control methods for multi-unit air conditioners Clause 13 also includes a phase 1 disconnection of AC power. 5.Control methods for multi-unit air conditioners According to claim 14, where the cutting process will cut off the supply of AC power by the switch Delivery provided with external send / receive circuit of external unit. And which can withstand high pressure 1 6.Control method for multi-unit air conditioner With one external unit And a number of internal units that are connected to the line The signal consists of a procedure (a) supplying AC power to an external unit and a number of internal units from an AC power source (b) an AC rectification being supplied at the stage. When the supply is direct current (c) transmission of data to a number of internal units from External unit via signal cable (d), setting the external unit to the receiving state after Data transmission at the transmission process (e) time-divided and sequential transmission from A number of internal units To the signal cable after setting the external unit to Receive status at set procedure and (f) reception of a number of internal units as Sequence from signal line by external unit 1 7.Control for multi-unit air conditioner With one external unit that is dispensed Power from commercial power lines At least one line And a number of internal units that are connected to the signal cable For sending data sequentially between external units And a number of internal units to control the multi-unit air conditioner operation. One DC power supply for collating the commercial power supplied to the external unit as power distribution. One external transmit / receive circuit connected to the supply A number of internal DC power transmit / receive circuits are also provided respectively. A number of internal units And are connected in series with an external transmit / receive circuit via a signal cable where a DC power supply, an external transmit / receive circuit, a number of internal transmit / receive circuits And power cable At least one commercial line forms an open circuit where a number of internal transmit / receive circuits A number of internal units are connected in parallel to each other, between at least one commercial power line and where each of the external transmit / receive circuits and a number of internal transmit / receive circuits comprise a transmit switch for supply circuits. Send / receive alternately with Power a DC power based on data sent from a controller and a signal detector connected in series to the transmission switch. For detecting whether the transmit / receive circuit is being supplied with power or not And output data That were detected according to the received information to the controller 1 8.Controllers for multi-unit air conditioners Clause 17 also includes A dispatch switch provided with an external send / receive circuit and which can Withstand high voltage to cut off at least one commercial power supply and a diode arranged between external transmit / receive circuits and signal lines, and which can withstand high voltages. To cut off commercial power in the event that the cable is not connected to the commercial power 1 9.control for multi unit air conditioner Clause 17 also includes A resistance that is held between the external transmit / receive circuit and the signal line and has a predetermined resistance value. To send information Simultaneously to each circuit of the internal transmit / receive circuit a number of internal units for limiting the short-circuit current in the event that Circuits between signal cables And at least one power cable was short-circuited 2 0. Controller for multi unit air conditioner Clause 18 also includes A differential pressure detector that is organized between the signal cables. Of the external unit And at least one power line to hold Of the transmission switch of the external transmit / receive circuit in case that the signal line is not connected to At least one commercial power supply