Protector, alternating-current fan control circuit and water machine terminal equipment

A technology for controlling circuits and protectors, applied to emergency protection circuit devices, electrical components, etc., can solve problems such as poor versatility, malfunction of protectors, and poor protection effects

Inactive Publication Date: 2017-05-24
QINGDAO HAIER AIR CONDITIONING ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] 2. Poor versatility, because the fan design of each fan manufacturer is different, there must be differences in the motor windings
Even for the fan manufacturers of the same brand, the motor windings of different specifications are not the same. If you want to use the method of m

Method used

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  • Protector, alternating-current fan control circuit and water machine terminal equipment
  • Protector, alternating-current fan control circuit and water machine terminal equipment
  • Protector, alternating-current fan control circuit and water machine terminal equipment

Examples

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Embodiment Construction

[0021] The following description and drawings illustrate specific embodiments of the invention sufficiently to enable those skilled in the art to practice them. Other embodiments may incorporate structural, logical, electrical, process, and other changes. The examples merely represent possible variations. Individual components and functions are optional unless explicitly required, and the order of operations may vary. Portions and features of some embodiments may be included in or substituted for those of other embodiments. The scope of embodiments of the present invention includes the full scope of the claims, and all available equivalents of the claims. Herein, various embodiments may be referred to individually or collectively by the term "invention", which is for convenience only and is not intended to automatically limit the scope of this application if in fact more than one invention is disclosed. A single invention or inventive concept. Herein, relational terms such...

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PUM

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Abstract

The invention discloses a protector. The protector comprises a fan null line connection section, a high-gear line connection section, a middle-gear line connection section and a low-gear line connection section which are arranged in parallel, wherein a first switch is in serial connection to the high-gear line connection section, a second switch is in serial connection to the middle-gear line connection section, a third switch is in serial connection to the low-gear line connection section, a first relay used for controlling the first switch to be switched on and off is connected between the null line connection section and the high-gear line connection section, a second relay used for controlling the second switch to be switched on and off is connected between the null line connection section and the middle-gear line connection section, and a third relay used for controlling the third switch to be switched on and off is connected between the null line connection section and the low-gear line connection section. According to the technical scheme, when a null line is mistakenly wired with different-gear line connection sections, the relay which is mistakenly wired can work to control the corresponding switch to be switched on and off, other gear relays cannot work, namely other gear relays cannot control corresponding switches to be switched on and off; thus, error wiring protection to a fan is effectively achieved.

Description

technical field [0001] The invention relates to the technical field of circuit control, in particular to a protector, an AC fan control circuit and water machine terminal equipment. Background technique [0002] The horizontal fan disc is a widely used terminal product of the water machine. The fan speed of the fan disc and the on-off of the two-way valve are mainly controlled by the fan disc controller (thermostat) (the two-way valve control is not discussed in this case) . [0003] The most commonly used fan control circuit, the controller is connected to the terminal corresponding to the wind speed gear of the AC fan, and the gear can be manually adjusted to realize the wind speed switching, or the automatic wind speed switching can be realized through the program in the controller. Although this kind of AC fan control circuit is convenient to control and easy to connect, it has a big defect, that is, when the zero line (N) and the fan speed gear control line (high, medi...

Claims

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Application Information

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IPC IPC(8): H02H11/00
CPCH02H11/00
Inventor 陶慧汇胡乐举曾现芹时斌
Owner QINGDAO HAIER AIR CONDITIONING ELECTRONICS CO LTD
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