JPWO2025203473A5 - - Google Patents

Description

To solve the above-mentioned problems and achieve the objective, the ventilation control interface device according to this disclosure is connected to a remote controller communication line that connects the indoor unit of an air conditioning system and the remote controller of the air conditioning system. The ventilation control interface device comprises a control unit that controls at least one ventilation device that exhausts indoor air to the outside and supplies outside air to the inside for ventilation, and a communication circuit that transmits and receives signals between the control unit and the remote controller via the remote controller communication line. The communication circuit includes an isolation circuit that electrically isolates the remote controller communication line from the control unit.

The damper 118 is used when the first ventilation device 109 or the second ventilation device 112 ventilates the area to be ventilated through a duct, and is installed in the duct leading to each area to be ventilated. When the damper 118 is driven by an AC motor, the amount of air sent to each area to be ventilated can be adjusted for each area by using a mechanism that adjusts the opening of the duct by the motor drive time after the damper 118 is fully closed. When the control unit 105 is conditioned by the indoor unit 102 to blow out outside air from the first ventilation device 109 or the second ventilation device 112, it controls the opening of the damper 118 installed in the airflow path of the air after it has been conditioned by the indoor unit 102, based on a signal received from the remote controller 101.

Claims (10)

It is connected to the remote controller communication line that connects the indoor unit of the air conditioner and the remote controller of the air conditioner,
The system comprises a control unit that controls at least one ventilation device that exhausts indoor air to the outside and supplies outside air to the inside for ventilation, and a communication circuit that transmits and receives signals between the control unit and the remote controller via the remote controller communication line ,
The communication circuit is a ventilation control interface device that includes an isolation circuit that electrically isolates the remote controller communication line from the control unit . The ventilation control interface device according to claim 1, wherein the control unit, based on the signal received from the remote controller, causes the ventilation equipment to switch between operation and stop, switch airflow, and switch whether or not to perform heat exchange ventilation. The ventilation control interface device according to claim 1, wherein when the control unit conditioned the outside air blown out from the ventilation equipment into the indoor unit, the control unit controls the opening degree of a damper installed in the airflow path of the air after it has been conditioned by the indoor unit based on the signal received from the remote controller. The damper is driven by an AC motor,
The ventilation control interface device according to claim 3, wherein the control unit controls the opening degree of the damper based on the driving time of the AC motor from the fully closed state of the damper. The communication circuit includes a sine wave generation circuit that brings the pulse output by the control unit closer to a sine wave, and a bandpass filter that shapes the signal received from the remote controller into a pulse in which the portion including the carrier wave is high level and the portion not including the carrier wave is low level.
The ventilation control interface device according to claim 1, wherein the isolation circuit includes a transmit signal isolation circuit provided between the sine wave generation circuit and the control unit, and a receive signal isolation circuit provided between the bandpass filter and the control unit. The ventilation control interface device according to claim 5, wherein the transmission signal isolation circuit comprises a first transistor that amplifies the current of a pulse output by the control unit, a high-speed photocoupler driven by the pulse whose current has been amplified by the first transistor, and a second transistor and a third transistor that shape the pulse output from the high-speed photocoupler. The ventilation control interface device according to claim 3, wherein, during cooling operation of the air conditioner, if the outside air temperature measured by the outside air temperature sensor installed on the outdoor unit of the air conditioner is lower than the indoor temperature measured by the temperature sensor that measures the indoor temperature, the control unit causes the indoor unit to blow the outside air out. A temperature sensor is installed in each room on multiple floors of the building to measure the indoor temperature, and a circulator is connected to it to circulate the air inside the building across the multiple floors.
The ventilation control interface device according to claim 3, wherein the control unit controls the circulator so that the temperature of each room on the plurality of levels approaches a target value based on the measurement results of the temperature sensor. A 24-hour ventilation system is connected.
The ventilation control interface device according to claim 3, wherein the control unit stops the 24-hour ventilation device when it is conditioned by the outside air taken in from the outside air intake into the indoor unit. The ventilation control interface device according to any one of claims 1 to 9 , wherein the control unit displays the operating status of the ventilation equipment and the indoor unit on the remote controller.