Compressor for automobile air conditioning device

Patent metadata

Field	Value
Publication number	US-12110910-B2
Application number	US-202017442397-A
Country	US
Kind code	B2
Filing date	Feb 28, 2020
Priority date	Mar 25, 2019
Publication date	Oct 8, 2024
Grant date	Oct 8, 2024

Abstract

A compressor (100) comprises a compressor body (10), a pipe (20) connected to the compressor body (10), and an acoustic cover disposed so as to surround the compressor body (10). The acoustic cover (30) has an insertion hole (31) through which the pipe (20) is inserted while being in close contact with the pipe (20), and an inner surface (30A) of the acoustic cover has a shape that traces an outer surface (10A) of the compressor body (10). Due to this configuration, it is possible to reduce the size and the weight of the acoustic cover (30), and by using the acoustic cover (30) with a simpler structure, it is possible to reduce the noise of the compressor (100) of this automobile air conditioning device.

First claim

The invention claimed is:

1. A compressor for an automobile air conditioning device comprising:
a compressor body;
a pipe connected to a flange portion that protrudes from an outer surface of the compressor body;
a connection block fixed around the pipe and fastened to the flange portion; and
an acoustic cover disposed around the compressor body,
wherein the acoustic cover has an insertion hole through which the pipe is inserted, and which is indirectly brought into close contact with the pipe, and an inner surface of the acoustic cover has a shape that follows the outer surface of the compressor body, the outer surface of the compressor body and the inner surface of the acoustic cover defining a gap therebetween, and
the insertion hole comes into contact with the flange portion, the connection block, and the outer surface of the compressor body, and
the acoustic cover has an annular inclined portion that extends toward the compressor body around the insertion hole as the acoustic cover extends toward the insertion hole, and
wherein the acoustic cover is a porous foam material.

2. The compressor for an automobile air conditioning device according to claim 1 , wherein the acoustic cover has at least one divided portion formed in a wall portion extending along a lateral direction.

3. The compressor for an automobile air conditioning device according to claim 2 , wherein the acoustic cover has an overlap portion in which half portions divided at the divided portion overlap each other at a position of the divided portion.

4. The compressor for an automobile air conditioning device according to claim 3 , wherein the overlap portion is a fitting portion that fits the half portions to each other.

5. The compressor for an automobile air conditioning device according to claim 3 , wherein the acoustic cover has a protrusion portion that protrudes from the outer surface thereof at a position of the overlap portion.

6. The compressor for an automobile air conditioning device according to claim 3 , wherein the acoustic cover has a resin material inserted at a position of the overlap portion.

7. The compressor for an automobile air conditioning device according to claim 3 , wherein the compressor body has a protrusion that protrudes from the outer surface thereof, and
the overlap portion of the acoustic cover comes into contact with the protrusion.

8. The compressor for an automobile air conditioning device according to claim 3 , wherein the overlap portion is a locking portion that locks the half portions to each other,
the locking portion includes a first locking portion that is provided in one of the half portions, and a second locking portion that is provided in the other of the half portions and is locked to the first locking portion,
a plurality of locking surfaces is formed on surfaces of the first locking portion and the second locking portion that face each other, and
the plurality of locking surfaces include at least
first locking surfaces that come into contact with each other when the first locking portion and the second locking portion relatively move in a direction in which the first locking portion and the second locking portion approach each other, and
second locking surfaces that come into contact with each other when the first locking portion and the second locking portion relatively move in a direction in which the first locking portion and the second locking portion are separated from each other.

9. The compressor for an automobile air conditioning device according to claim 1 , wherein the acoustic cover is a honeycomb sandwich panel having a plurality of honeycomb cells, and has a plurality of openings formed on the inner surface corresponding to the plurality of honeycomb cells.

10. The compressor for an automobile air conditioning device according to claim 9 , wherein the acoustic cover has at least one divided portion formed in a wall portion extending along a lateral direction.

Assignees

• Mitsubishi Heavy Ind Thermal Systems Ltd

Inventors

• Watanabe Yasunori
• Hagita Takayuki
• Yakushiji Shunsuke
• Okabe Ryoji
• Saho Hideo

Classifications

• G10K11/172

  using resonance effects · CPC title

• G10K11/162

  Selection of materials · CPC title

• F04D17/10

  for compressing or evacuating · CPC title

• G10K11/168

  Plural layers of different materials, e.g. sandwiches · CPC title

• F01C21/10

  Outer members for co-operation with rotary pistons; Casings (casings for rotary engines or machines in general F16M) · CPC title