Patent application number | Description | Published |
20090151382 | TRANSMISSION SYSTEM FOR AIR CONDITIONER - A plurality of air conditioning units ( | 06-18-2009 |
20100036532 | REFRIGERANT CYCLE AND METHOD OF CONTROLLING THE SAME - An object of the present invention is to reduce electrical noise in accordance with the necessity of a countermeasure taken against electrical noise without changing a structure of an expansion valve. In a case where a judgment result as to whether or not the countermeasure against electrical noise is taken is affirmative, a drive timing (interval) of an expansion valve ( | 02-11-2010 |
20100114379 | FAN CONTROL SYSTEM - A fan control system includes first and second adjacent fans, first and second motors configured to rotate the first and second fans, and a control unit configured to control rotational speeds of the first and second motors in order to control rotational speeds of the first and second fans. The first and second motors are energized such that the rotational speeds of the first and second fans reach target rotational speeds prior to increasing the rotational speeds of the first and second fans to required rotational speeds. The target rotational speeds are lower than the required rotational speeds. The first and second motors are energized such that the rotational speeds of the first and second fans reach the required rotational speeds after the rotational speeds of the first and second fans reach the target rotational speeds. | 05-06-2010 |
20100213905 | EARTH LEAKAGE DETECTION CIRCUIT - A zero-phase current is outputted by detecting a ground-fault current with a zero-phase-sequence current transformer. A circuit having an open collector output operates when the voltage of the zero-phase current exceeds a positive side threshold value or it falls below a negative side threshold value to discharge a capacitor. When the inter-plate voltage of the capacitor falls below a threshold value voltage, a controlling means detects electric leakage to transmit that to a control unit of an air conditioner. | 08-26-2010 |
20100226792 | FAN CONTROL SYSTEM AND AIR CONDITIONER THAT INCLUDES THE SAME - A fan control system includes a first fan, a second fan that is adjacent to the first fan, a first motor that is configured to rotate the first fan, a second motor that is configured to rotate the second fan, and a control unit. The control unit is configured to control the rotational speeds of the first motor and the second motor, and to decrease the rotational speeds of both the first motor and the second motor when the rotational speed of the first motor must be decreased. | 09-09-2010 |
20100296206 | EARTH LEAKAGE DETECTION METHOD - It is judged whether the abnormal current is due to the electric leakage or not by a detection step detecting the abnormal current by the leakage current detection board and comparing a threshold value of predetermined items stored in a storing unit and actual values corresponding to the items at the time of when a compressor is stopped by detecting the abnormal current in the detection step. Specifically, the abnormal current is recognized as the electric leakage to be displayed on a display unit when at least one of the operating time at the time of detecting the abnormal current, the inner pressure of a motor, and a discharge pipe temperature is lower than the corresponding threshold value. | 11-25-2010 |
20110036624 | CONNECTING MEMBER OF ELECTRICAL CIRCUIT - A connecting member such as a terminal base is used, which allows a printed circuit board unit in which circuit elements such as a power module are mounted on a printed circuit board to be rated at higher current as compared to a conventional printed circuit board unit; and therefore an increase in size of the unit can be reduced or prevented with a simple configuration of connection sections. The connecting member of an electrical circuit connects the circuit element of the electrical circuit including the printed circuit board, to an electrical wire. The connecting member includes a terminal connecting section to be directly connected to terminal pins of the circuit element; a wire connecting section to be connected to the electrical wire; and attachment sections for attaching the connecting member to the printed circuit board. | 02-17-2011 |
20120103590 | FAN CONTROL SYSTEM AND AIR CONDITIONER THAT INCLUDES THE SAME - A fan control system includes a first fan, a second fan adjacent to the first fan, a first motor that rotates the first fan, a second motor that rotates the second fan, and a control unit. The control unit controls the rotational speeds of the first motor and the second motor. The control unit decreases the rotational speed of the first motor and increases/decreases the rotational speed of the second motor when the rotational speed of the first motor must be decreased, The control unit can decrease the rotational speed of the second motor when the rotational speed of the first motor whose rotational speed has been decreased is lower than a prescribed rotational speed, and increase the rotational speed of the second motor when the rotational speed of the first motor whose rotational speed has been decreased is higher than the prescribed rotational speed. | 05-03-2012 |
20120214321 | CIRCUIT BOARD UNIT - A circuit board unit includes a printed circuit board and a terminal block mounted on the printed circuit board and connecting a power module and an electrical wire together. The terminal block includes a terminal connection part to be directly connected to the power module, and a wire connection part to be connected to the electrical wire. In the printed circuit board, a hole having an orthographic projection area larger than that of the terminal connection part as viewed in plane is formed. The terminal connection part is positioned below or above the hole of the printed circuit board. | 08-23-2012 |