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Blower motor for HVAC systems

A motor, AC power supply technology, applied in the direction of AC motor control, control system, electrical components, etc., can solve the problems that cannot be easily changed, the connection is cumbersome and difficult, the lack of sensitivity of the blower, etc., and the detection circuit is simple, fast and easy to install. Effect

Inactive Publication Date: 2012-10-03
NIDEC MOTOR CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Making these connections can be cumbersome and difficult in existing HVAC systems
Additionally, these known systems lack the sensitivity to operate the blower at low operating speeds
[0012] Another limitation of existing PSC and BPM motors is that HVAC OEMs often require motors with unique operating parameters (torque load, fan speed, direction of rotation, etc.) in order to optimize the performance of their HVAC components
Although multi-speed PSC motors and BPM motors offer certain operating options, many of their operating parameters are fixed after manufacture and cannot be easily changed

Method used

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  • Blower motor for HVAC systems
  • Blower motor for HVAC systems
  • Blower motor for HVAC systems

Examples

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Embodiment Construction

[0042] The following detailed description of the invention refers to the accompanying drawings, which illustrate specific embodiments in which the invention may be practiced. The examples are intended to describe embodiments of the invention in sufficient detail to enable those skilled in the art to practice the invention. Other embodiments may be utilized and modifications may be made without departing from the scope of the present invention. The following detailed description is therefore not intended to be limiting. The scope of the present invention is to be limited only by the appended claims, along with the full scope of equivalents of the claims.

[0043] now refer to figure 2 , shows a blower motor assembly 10 constructed in accordance with one embodiment of the present invention. The illustrated blower motor assembly 10 generally includes a rectifier 12 , a novel sensing circuit 14 , a variable speed motor 176 , an associated motor controller for the motor, and a p...

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Abstract

A blower motor assembly having a variable speed motor that is suitable for direct, drop-in replacement in a residential HVAC (heating, ventilation, and air conditioning) system that employs a PSC motor. The blower motor assembly includes at least a neutral input and two hot AC line connections, one for connection to the heating power source and the other to the cooling power source. A sensing circuit senses which of the inputs is energized by sensing either voltage or current on the inputs. The sensing circuit delivers a corresponding signal to a motor controller to control the speed of the variable speed motor. The blower motor assembly may also be equipped with additional hot AC inputs, more than one neutral line, and several sensing circuits for sensing current or voltage in the hot inputs and / or the neutral lines for controlling various aspects of the variable speed motor.

Description

technical field [0001] This invention relates to blower motors and controls for use in residential heating, ventilation and air conditioning (HVAC) systems. Specifically, embodiments of the present invention relate to replacement blower motor assemblies that can be connected to standard power terminals for fixed capacitor phase split (PSC) motors, and can be used in Original Equipment Manufacturer (OEM) applications, among other applications This blower motor assembly. Background technique [0002] Improvements in HVAC system efficiency have provided considerable reductions in energy usage. For example, many high efficiency furnaces, air conditioners, and air handlers now have greater than 90% efficiency (AFUE ratings). However, the blower motors used to move air in these systems have not seen significant efficiency improvements and are much less efficient. As furnaces and air conditioners have become more efficient, the portion of the total energy consumption of the HVAC...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P23/00H02P27/04
CPCH02P1/04
Inventor A·E·伍德沃德
Owner NIDEC MOTOR CORP