Control unit and heat pump unit

A technology of a heat pump device and a control device, which is applied to heating and ventilation control systems, heating methods, and household heating, etc., can solve the problems of increasing the number of detection circuits and higher prices, and achieve the effect of suppressing the increase in costs.

Active Publication Date: 2016-05-25
DAIKIN IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, when a detection circuit for detecting overvoltage or undervoltage is provided for each protected object as described above to perform control against overvoltage or undervoltage, the number of detection circuits increases, and the device that becomes the object of control by the control device more expensive

Method used

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  • Control unit and heat pump unit
  • Control unit and heat pump unit
  • Control unit and heat pump unit

Examples

Experimental program
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Embodiment Construction

[0047] Hereinafter, the electric device of the present invention will be described by taking a heat pump air conditioner as an example. This heat pump type air conditioner has an outdoor fan motor unit, and the outdoor fan motor unit includes a brushless DC motor (hereinafter, referred to as a brushless DC motor). In addition, this heat pump air conditioner includes a motor control unit for controlling the outdoor fan motor unit and a main body control unit for controlling the device, especially the outdoor unit 30 , in the control device 50 .

[0048] (1) Outline of heat pump air conditioner

[0049] (1-1) Outline of the structure of the air conditioner

[0050] figure 1 It is a perspective view showing the appearance of a heat pump type air conditioner (hereinafter referred to as an air conditioner) according to an embodiment of the present invention. figure 1 The air conditioner 10 includes an indoor unit 20 and an outdoor unit 30 . The outdoor unit 30 is connected to t...

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PUM

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Abstract

The invention provides a control device and a heat pump device. The control device has a motor control part which has a control inverter circuit, and can reduce the number of detection devices which are used for detecting overvoltage or undervoltage. An air-conditioning device includes an outdoor fan motor (38a) which provides driving electric power through an inverter circuit (38b). The motor control part (74) controls the outdoor fan motor (38a). A main body control part (75) that is connected with the motor control part (74) is used for controlling the air-conditioning device. When the direct-current bus voltage (Vdc) of the motor control part (74) in the inverter circuit (38b) satisfies conditions of the overvoltage or the undervoltage and also satisfies a condition that the control state of the outdoor fan motor (38a) is a state before operation is satisfied, commercial power lines (48a, 48b) which are connected with the inverter circuit (38b) are determined to have generated overvoltage or undervoltage.

Description

technical field [0001] The present invention relates to a control device of an electric device including a motor and a heat pump device including a fan motor. Background technique [0002] In heat pump devices, such as fan motors and the like, there is an increased demand for brushless DC motors that are highly efficient and have a long service life and are less electrically and mechanically noisy. Such multi-phase motors, such as brushless DC motors, are typically powered by power from an energy-efficient inverter circuit. [0003] In such a heat pump device having an inverter circuit, for example, as described in Patent Document 1 (Japanese Patent Laid-Open No. 5-114473), the inverter circuit is protected from overvoltage by controlling the inverter circuit The motor control circuit and the overvoltage detection circuit are carried out. In order to protect the inverter circuit from overvoltage, the overvoltage detection circuit detects the overvoltage state of the invert...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24F11/00
Inventor 佐藤俊彰
Owner DAIKIN IND LTD
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