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Outdoor unit for air conditioner

An air conditioning and outdoor unit technology, applied in the field of outdoor units, can solve the problems that the air conditioning device cannot operate continuously, and the repair requires a lot of time and cost, and achieves the effect of improving the abnormality detection accuracy and reducing the abnormality of the fan.

Active Publication Date: 2018-11-23
HITACHI JOHNSON CONTROLS AIR CONDITIONING INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In such a state, the air conditioner cannot continue to operate, and it takes a lot of time and money to repair

Method used

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  • Outdoor unit for air conditioner
  • Outdoor unit for air conditioner
  • Outdoor unit for air conditioner

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] use Figure 1~Figure 9 The first embodiment of the outdoor unit of the air conditioning apparatus of the present invention will be described.

[0031] figure 1 Is a perspective view showing Example 1 of the outdoor unit of the air conditioning apparatus of the present invention, figure 2 Yes figure 1 Cross-sectional view of line II-II, image 3 It is used to explain the structure for detecting abnormality of the fan in the first embodiment of the present invention.

[0032] In an air-conditioning apparatus, an outdoor unit 100 installed on a base (or stand) 20 outdoors and one or more indoor units (not shown) installed indoors are connected through refrigerant piping to form a refrigeration cycle , Thereby air conditioning. Such as figure 1 , figure 2 As shown, the outdoor unit 100 is provided with an air-cooled heat exchanger 2 and a blower 3 (3A, 3B) for ventilating the heat exchanger 2 in the casing 1. In addition, in figure 1 The illustrated example of the outdoor un...

Embodiment 2

[0096] Next, use Picture 10 with Picture 11 The second embodiment of the outdoor unit of the air conditioning apparatus of the present invention will be described. Picture 10 Describe the structure for detecting abnormality of the fan in Embodiment 2 of the present invention, Picture 11 It is a flowchart explaining the fan abnormality detection of the second embodiment. In these Picture 10 with Picture 11 With Figure 1~Figure 9 The parts with the same reference numerals are the same or equivalent parts, and the description will be focused on the differences from the first embodiment, and the description of the same parts will be omitted.

[0097] In the first embodiment described above, as the vibration detection unit of the fan 3a, an example was described in which a component synchronized with the rotation of the fan is extracted from the current value detected by the current detection unit 61 included in the inverter device 6a. The pulsating current is used to detect th...

Embodiment 3

[0106] use Picture 12 The third embodiment of the outdoor unit of the air conditioning apparatus of the present invention will be described. Picture 12 It is a perspective view explaining a structural example of the heat exchanger of the outdoor unit of Example 3 of this invention. In addition, this Embodiment 3 is an embodiment implemented in combination with Embodiment 1 or Embodiment 2 described above.

[0107] Such as figure 1 As shown, when there are two blowers 3A and 3B in one outdoor unit, when the abnormality of the fan is detected by the above-mentioned Embodiment 1 or Embodiment 2, it is preferable to stop only the blower with the fan whose abnormality is detected. Keep the remaining blowers running.

[0108] Picture 12 Means figure 1 The structure of the heat exchanger inside the housing, when the heat exchanger 2 is divided into a plurality of left and right heat exchangers 2A and 2B inside the housing, when using a blower with an abnormal fan detected, such as a bl...

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PUM

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Abstract

The purpose of the present invention is to provide an outdoor unit for an air conditioner such that erroneous determination of abnormality in an outdoor unit fan is reduced and abnormality detection accuracy is improved. To achieve this, this outdoor unit for an air conditioner comprises an outdoor unit with a fan, and is provided with a vibration detection means for detecting vibration of the fanand a control device that performs at least one or more retry operation for changing rotation of the fan if the vibration detecting means detects an abnormality in the fan. Examples of the retry operation include an operation for reducing and then increasing the rotational speed of the fan, an operation for stopping and then restarting the rotation of the fan, and an operation for rotating the fan backward and then rotating the fan forward.

Description

Technical field [0001] The present invention relates to an outdoor unit of an air-conditioning device, in particular to an outdoor unit of an air-conditioning device suitable for detecting abnormality of a fan of a blower used in the outdoor unit and improving reliability. Background technique [0002] Generally, in building air conditioners and small refrigerators, in order to exchange heat between the refrigerant and outdoor air, the outdoor unit of the air conditioner and the outdoor unit of the small refrigerator are equipped with cross-fin tube heat exchange Air-cooled heat exchangers such as air-cooled heat exchangers and micro-channel heat exchangers In addition, it is also equipped with a blower that passes outdoor air into these heat exchangers to exchange heat between the refrigerant flowing in the heat exchanger and the outdoor air. The blower can be controlled in rotation speed by an inverter or the like, so that Increase or decrease the air flow into the above heat ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F1/40F04D27/00F24F1/20F24F1/38F24F11/89
CPCF04D27/00F24F1/20F24F1/38F24F1/40F24F11/89F24F11/74Y02B30/70
Inventor 森隼人秋山义幸稻叶雅美笠原励安田源长桥克章
Owner HITACHI JOHNSON CONTROLS AIR CONDITIONING INC
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