DC ventilation system

Abstract

DC ventilation system with at least one fan with a housing containing a DC motor (1), and with at least one AC-DC converter (3), a remote control (2) attached to a structure, and an AC power supply for the operation (2), and at least one converter (3), characterized in that the operation (2) is connected to the converter (3) which is located outside the housing of the fan, and the converter (3) is connected to the motor (1) via a wiring (4).

Description

Technical field The present invention relates to a ventilation system which includes a fan equipped with a direct current (DC) motor and offers significant advantages over the prior art. It can be used in the area of ​​ventilation and air conditioning of rooms. State of the art Ceiling fans and similar fans may contain DC motors. This means they require a converter to transform the AC power supply and use it in the motor. On the other hand, these fans usually have controls for their remote operation. Some of these controls use radio frequencies, infrared, and similar systems. Other controls are permanently mounted on the wall and can communicate with the fan via wiring. However, these systems have some problems. When using a remote control, a power outage that restarts the fan can cause it to search for a new pairing. If the fan is located near other devices (for example, in hotels), it may pair with an unsuitable remote. In other cases, it is desirable that the room containing the fan be isolated from electromagnetic radiation as much as possible. In such cases, the fan cannot receive waves from the controls. On the other hand, it is possible to shield the AC cables leading to it, but this solution is only a makeshift solution. The applicant is not aware of any system that could be considered similar to the invention. Brief description of the invention The invention consists of a direct current ventilation system according to the independent claims, the variants of which solve the problems of the prior art. The system essentially consists of a fan housing a DC motor. It also includes a remote control mounted on a structure (usually a wall) and an AC power supply. This power supply connects to the control unit and an associated AC-to-DC converter. The AC-to-DC converter is connected to the motor via wiring and is located within or near the control unit itself, and in any case, outside the fan housing (in the wall, in the suspended ceiling, etc.). This means the conversion takes place some distance from the motor. This remote control may include a receiver for wireless signals. If the fan includes lights, these are controlled by changes in voltage or intensity in the wiring, as a way of transmitting commands from the remote control. Further variations can be found in the rest of the patent description. Description of the characters For a better understanding of the invention, a section with drawings is included, showing exemplary embodiments. Fig. 1: Schematic of an example of a ventilation system. Fig. 2: Schematic of a second example of a ventilation system. Fig. 3: Schematic of a third example of a ventilation system. Ways to implement the invention The following is a brief description of a method for implementing the invention as a clear and non-restrictive example. The example shown in the figure includes a fan with a housing containing a DC motor (1). The system also includes a remote control (2) mounted on a wall or other fixed element. The system includes an AC power supply from the mains, which reaches the control unit (2) and an AC-DC converter (3) connected to the control unit (2) and located outside the fan housing, for example, inside or directly adjacent to the control unit (2). Wiring (4) connects the converter (3) to the motor (1) for the DC power supply. It is understood that the control unit (2) includes the converter (3) even if the converter is located inside or near the control unit (2), but always outside the fan housing. When the fan displays lights, the signal to switch the lights on and off can be sent via the wiring (4) itself, for example by increasing and decreasing the voltage or intensity detected at the fan. This type of signal can be used to vary the temperature, intensity, and color of the light, depending on the fan's options. A control unit (11) can read these changes to activate or deactivate the necessary components. In the preferred embodiment, the system comprises one or more wireless remote controls (5) that can use any type of wireless signal, for example, WiFi. Each remote control (5) has a transmitter, while the receiver (6) is located in the fixed control unit (2), so that the fan body does not require a separate receiver. In this way, the fan receives only direct current energy, without the possible generation of variable electromagnetic fields, whereas any wireless signal is sent to a remote element, such as the wall-mounted control unit (2). The control unit (2) can be connected to any centralized system in the apartment or building using the receiver (6) and any relevant protocol. It can also have wired connections for this purpose. For example, it can be part of a home automation system using KNX. In the embodiment shown in Figures 2 and 3, the control unit (2) manages several fans, each with its own motor (1). In Figure 2, each motor (1) has its own wiring (4) from the control unit (2), and more precisely, the control unit (2) has one converter (3) per motor (1) to increase versatility. In Figure 3, a single converter (3), in this case an external one, supplies several motors (1). It should be taken into account that each converter (3) can be connected to one or more motors (1), as can be seen by comparing Fig. 2 and Fig. 3, and that each wiring (4) can supply power to two or more motors (1), either in series or in parallel (Fig. 3).

Claims

DC ventilation system with at least one fan with a housing containing a DC motor (1), and with at least one AC-DC converter (3), a remote control (2) attached to a structure, and an AC power supply for the operation (2), and at least one converter (3), characterized in that the operation (2) is connected to the converter (3) which is located outside the housing of the fan, and the converter (3) is connected to the motor (1) via a wiring (4). DC ventilation system according to claim 1, characterized in that the control (2) comprises a receiver (6) for wireless signals. DC ventilation system according to claim 1, characterized in that the fan comprises lights which are controlled by changes in voltage or intensity in the wiring (4). DC ventilation system according to claim 1, characterized in that it comprises two or more fans, each with a motor (1) and a wiring (4) from the converter (3) of the control (2) to each motor (1). DC ventilation system according to claim 4, characterized in that the control unit (2) comprises several converters (3) which are connected to the motors (1) via respective wiring (4).

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