Upwind starting control method of external fan of variable-frequency air conditioner, circuit and air conditioner thereof

A frequency conversion air conditioner and start-up control technology, which is applied to its air conditioner, headwind start-up control method, and circuit field, can solve problems such as difficult start-up, unreliable performance, etc., achieve enhanced reliability, strong practicability and versatility, and avoid failure step effect

Active Publication Date: 2018-02-16
GREE ELECTRIC APPLIANCES INC
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0004] In order to solve the defects of difficult starting and unreliable performance in the prior art, the present invention proposes a control method, circuit, and air conditioner for the headwind start-up of the external fan of the inverter air conditioner

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  • Upwind starting control method of external fan of variable-frequency air conditioner, circuit and air conditioner thereof
  • Upwind starting control method of external fan of variable-frequency air conditioner, circuit and air conditioner thereof
  • Upwind starting control method of external fan of variable-frequency air conditioner, circuit and air conditioner thereof

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Embodiment Construction

[0031] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, and are not intended to limit the present utility model.

[0032] The invention discloses a headwind start-up control method for an outdoor fan of an inverter air conditioner, which comprises the following steps: detecting the initial rotational speed of the outdoor fan, judging the rotation direction of the outdoor fan; and determining the start-up mode of the outdoor fan according to the rotation direction of the outdoor fan. The core of the headwind start of the inverter air conditioner's external fan is that the initial state of the external fan is unknown, and direct start often has problems such as overcurrent protection and hi...

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Abstract

The invention discloses an upwind starting control method of an external fan of a variable-frequency air conditioner, a circuit and an air conditioner thereof. The upwind starting control method detects the initial rotation speed of the external fan, judges whether the rotating direction of the external fan is in a static, positive or negative rotation direction, and adopts the corresponding normal starting mode, forward speed regulation mode and brake mode according to different rotation directions of the external fan to start and control. The upwind starting control method enhances the reliability of upwind starting, avoids loss of synchronism, overvoltage and other faults when upwind starting frequently occurs. The upwind starting control method has the advantages of being simple in circuit, low in manufacturing cost, and high in practicability and universality.

Description

technical field [0001] The invention relates to frequency conversion motor control, in particular to a method, a circuit and an air conditioner for a headwind start-up control method of an external fan of a frequency conversion air conditioner. Background technique [0002] In the field of frequency conversion air conditioners, there are currently two types of drive for the external fan of the air conditioner with a position sensor and without a position sensor. The latter has a huge load when it is started in the face of headwinds, and there is currently no solution that can reliably handle it. The general method is to install a brake circuit. The advantage is that it can be stopped quickly. The disadvantage is that an additional switch tube is added, and it may not be able to brake completely. At present, the control of most frequency conversion motors is no longer equipped with Hall sensors and other position detection devices due to cost and feasibility reasons, and is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/70F24F11/77
CPCY02B30/70
Inventor 刘涛孙丰涛方小斌
Owner GREE ELECTRIC APPLIANCES INC
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