JP2014108633A5

JP2014108633A5 -

Info

Publication number: JP2014108633A5
Application number: JP2012262209A
Authority: JP
Filing date: 2012-11-30
Publication date: 2015-03-26
Anticipated expiration: 2032-11-30

Description

本発明では、第１の辺と第３の辺とで囲まれた面、および第２の辺と第３の辺とで囲まれた面の少なくともいずれか一方の面に、少なくとも１つのケースに固定するための固定部（３０）が設けられ、固定部は、熱交換面の四隅を除いた位置であって、熱交換器の固有振動モードの腹部に対応する位置を除いた位置であり、１０００Ｈｚ以下の合成振動モードが最小となる位置に設けられることを特徴とする熱交換器の固定構造である。 In the present invention, at least one of the surface surrounded by the first side and the third side and the surface surrounded by the second side and the third side is provided in at least one case. A fixing part (30) for fixing is provided, and the fixing part is a position excluding the four corners of the heat exchange surface, excluding a position corresponding to the abdomen of the natural vibration mode of the heat exchanger , The heat exchanger fixing structure is provided at a position where the combined vibration mode of 1000 Hz or less is minimized .

このような本発明に従えば、熱交換器は外部に設けられるケースに固定される。ケースと固定するための固定部は、第１の辺と第３の辺とで囲まれた面、および第２の辺と第３の辺とで囲まれた面の少なくともいずれか一方の面に、少なくとも１つ設けられる。さらに固定部は、熱交換面の四隅を除いた位置であって、熱交換器の固有振動モードの腹部に対応する位置を除いた位置（以下、単に「腹部を除いた位置」ということがある）に設けられる。四隅と腹部を除いた位置は、振動しにくい位置である。換言すると、腹部は最も振動している位置であり、四隅も出願人の鋭意研究結果によって腹部と同様に振動しやすい位置であることが判明した。このような振動しやすい位置を避けて固定部を設けるので、振動しにくい部分がケースに固定される。したがって熱交換器の振動が固定部からケースに伝わりにくくなる。また固定部の位置を変えるという簡単な構成で、熱交換器からケースへの振動を抑制することができる。これによって熱交換器の振動に起因して、ケースが振動することによる騒音を抑制することができる。
また固定部が設けられる位置は、１０００Ｈｚ以下の合成振動モードが最小となる位置である。熱交換器から外部への伝播による騒音が１０００Ｈｚ以下の場合には、１０００Ｈｚ以下の合成振動モードが最小となる位置を固定することによって、ケースに伝わる振動をさらに抑制することができる。 According to such this invention, a heat exchanger is fixed to the case provided outside. The fixing part for fixing to the case is on at least one of the surface surrounded by the first side and the third side and the surface surrounded by the second side and the third side. , At least one is provided. Furthermore, the fixed portion is a position excluding the four corners of the heat exchange surface, and a position excluding a position corresponding to the abdomen of the natural vibration mode of the heat exchanger (hereinafter, simply referred to as “position excluding the abdomen”). ). The positions excluding the four corners and the abdomen are positions that do not vibrate easily. In other words, the abdomen is the most oscillating position, and the four corners have been found to be easily oscillated as well as the abdomen by the results of the applicant's earnest research. Since the fixing portion is provided so as to avoid such a position that easily vibrates, the portion that hardly vibrates is fixed to the case. Therefore, it becomes difficult for the vibration of the heat exchanger to be transmitted from the fixed portion to the case. In addition, vibration from the heat exchanger to the case can be suppressed with a simple configuration in which the position of the fixing portion is changed. As a result, noise caused by the vibration of the case due to the vibration of the heat exchanger can be suppressed.
The position where the fixing portion is provided is a position where the combined vibration mode of 1000 Hz or less is minimized. When the noise due to propagation from the heat exchanger to the outside is 1000 Hz or less, the vibration transmitted to the case can be further suppressed by fixing the position where the combined vibration mode of 1000 Hz or less is minimized.

Claims

A fixed structure of a heat exchanger (10, 10A, 10B, 10C) having a rectangular parallelepiped shape that is fixed to a case provided outside and in which a refrigerant flows.
When the sides constituting the rectangular parallelepiped heat exchanger are the first side (31), the second side (32), and the third side (33), the length of the third side is Smallest,
The surface surrounded by the first side and the second side is a heat exchange surface (11a),
At least one of the cases on at least one of the surface surrounded by the first side and the third side and the surface surrounded by the second side and the third side A fixing part (30, 30B) is provided for fixing to
The fixed part is a position excluding the four corners of the heat exchange surface, excluding the position corresponding to the abdomen of the natural vibration mode of the heat exchanger , and the combined vibration mode of 1000 Hz or less is minimized. A heat exchanger fixing structure characterized by being provided at a position .

2. The heat exchanger fixing structure according to claim 1 , wherein the fixing portion is provided at a position where a vibration mode frequency of the heat exchanger and a natural frequency of wall vibration of the case are different.