an hvac system

Abstract

The invention discloses an HVAC system. The HVAC system originally used a PSC fan motor, including an HVAC system controller, and now replaces the PSC fan motor with an ECM motor, wherein: the HVAC system controller has several 115V motors connected to the motor. Or a 230V AC output port and a common port, the ECM motor is provided with several 24V low-voltage AC gear input lines, and the ECM selects the operating parameters of the motor according to the selected gear input lines in the conduction state; it also It includes an intermediate connection device, which is connected between the HVAC system controller and the ECM motor, and the intermediate connection device converts the 115V or 230V AC signals of several output ports of the HVAC system controller into several The 24V low-voltage AC signal identified by the gear position input line avoids redevelopment, reduces R&D costs and shortens the R&D cycle, reduces product models, and facilitates management.

Description

Technical field: [0001] The present invention relates to an HVAC system. Background technique: [0002] In recent years, with the increasingly fierce competition in the field of electrical appliances, the technical requirements for products have been continuously improved, such as energy saving and environmental protection, high controllability, intelligent controllability, short development cycle, and low noise. As the core component—the motor, it will undoubtedly become the key component to solve the above technical problems. The motors in traditional household central air conditioners generally use single-phase AC motors PSC, single-phase AC motors, low efficiency, relatively energy consumption, and large noise. Controlling intelligence is low. [0003] With the development of motor technology, permanent magnet synchronous motors have appeared. This kind of motor has a motor controller, which uses the motor controller to achieve the purpose of electronic commutation of t...

AI Technical Summary

Problems solved by technology

[0006] The ECM motor motor has a single function and cannot be applied to different workplaces, such as an ECM motor driven by a thermostat THERMOSTAT, such as figure 1 As shown, since the output ports (W1, W2, Y1, Y2, G) of the thermostat THERMOSTAT output 24VAC signals, the 5 gear lines T1, T2, T3, T4, T5 of the ECM motor input 24VAC signals, However, the original HVAC system using PSC fan motors outputs 115VAC or 230VAC, which are not compatible. Therefore, it is necessary to propose a solution to broaden the scope of use of ECM motors in existing HVAC systems, avoid repeated development, and reduce R & D costs and shorten the R & D cycle, the purpose of convenient management

Images