JPS58220991A - Rotary compressor - Google Patents

Abstract

PURPOSE:To prevent wearing of bearing parts due to stress, by using a partitioning plate interposed between rotary compessive elements as an intermediate bearing part and arranging distances of the bearing parts positioned in both sides equally from each rotary compressive element. CONSTITUTION:Stress due to compression force is differently generated respectively from both rotary compressive elements 3, 4, and the stress is unevenly applied to a bearing part 13 of an upper frame member 15 and a bearing part 14 of a bottom frame member 16. Here an intermediate bearing part 26 is formed to a partitioning plate 12, and the stress due to the compression force of the both elements 3, 4 is accepted by the bearing parts 13, 14, 26 in both sides, consequently wearing of the bearing part 13 in the upper frame member 15 and the bearing part 14 in the bottom frame member 16 can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a multi-cylinder rotary compressor, and an object of the present invention is to improve the durability of a bearing portion.

In the case of a conventional rotary compressor, for example, a two-cylinder source rotary compressor, a partition plate is interposed between two rotary compression elements, and the two rotary compression elements are sandwiched by a frame body having bearings on both sides. Since the rotation angles of the elements are shifted by 180°, the distances of the bearings from both rotating pressure line elements are different, and the compression force of the upper rotational compression element is applied to the upper bearing, while the compression force of the lower rotational compression element is applied to the upper bearing. The compressive force is applied to the lower bearing part, and stress is also applied to the bearing part, so there is a problem that the bearing part wears out.

The basic structure of the present invention is that an electric element and a plurality of rotary compression elements are housed in an airtight container, and the two elements are connected by a rotation shaft, and bearings are provided on both sides with the plurality of rotary compression elements in between. A partition plate interposed between the rotary compression element is formed of two divided plates, and a journal hole is provided spanning both side plates to form an intermediate bearing portion of the rotating shaft, and a #-marked partition plate is provided. The invention is characterized in that the suction passage provided in the partition plate is formed at a position perpendicular to the dividing direction of the two dividing plates.

In this configuration, cf) the partition plate interposed between the rotary compression elements is used as an intermediate bearing, and the distances of the bearings located on both sides from each rotational pressure iMI are equalized, so that stress is applied to one side. In order to prevent the bearing part from being worn out and to form a suction passage in the partition plate in a step 9 perpendicular to the direction in which the partition plate is divided, the two pieces are divided when driving a collar to connect the suction pipe to the suction passage. This is to prevent birds from shifting the journal hole formed across the board.

The present invention will be explained below based on the embodiment shown in FIGS. 1 and 2. (1) is a disconnector, and inside the closed container there is an electric element (2) in the upper part, and a first rotating element in the lower part. Wangji ll! Elementary t3
1 and a second rotary compression element (41) are arranged and housed, and the surface rotation compression element 131 +41 has a rotation angle t1.
80 C-connected to a rotating shaft (7) having two eccentric portions 151161 formed in a staggered manner. Said first
Each compression chamber 181191k of the rotary compression element (3) and the second rotary compression element (4) forms the first cylinder 11G and the second
The cylinder 11υ is connected to the rotating shaft (
7) Bearing portion 1131+1. It is blown between the upper frame U51 and the lower frame U51 which are provided at il'. The eccentric portions 151t61 of the rotating shafts (71) are arranged in each compression chamber +81191 while being connected to the roller surface, and sliding blades (not shown) are in contact with the outer surface of the roller unua, respectively, so that the respective compression kl +81191 f Low! It is designed to be divided into the E side and the high pressure 1H1. A9 is a suction pipe, and the suction pipe is connected to the suction passage 4 formed in the partition plate (121) by crimping it with a collar (c). It's cool.

Thus, the partition plate 1121 has two dividing plates Q4 (c) containing connecting pieces @ 翰 and 翰 (to) at both ends with bolts (a).
The journal hole cylinder formed in the intermediate bearing part (E) of the rotary shaft 17) is connected to the bottom of the groove (C), and extends over both the dividing plates (24e and 4). Rotary compression element 131t4+ ?The partition plate 113 to be installed is fixed to the inner wall of the airtight container (11) on the opposite side of the joint between the two dividing plates (c) (C) and the suction pipe 09 large collar (e;; f).
)+A connecting submerged suction passage is formed at a position perpendicular to the dividing direction of the joint.

In the rotary compressor constructed in this way, the first rotary compression element (3) and the second rotary compression element (4) have a rotation angle of 180° and perform the entire suction compression. Stresses due to the compressive force of the upper frame 1151 and the lower frame f
Partition plate 1
1.21 The middle bearing part is formed in the bearing part 113 of the upper frame Cl51 and the lower part in order to receive all the stress due to the compressive force of the double rotating compression element 13) (4) by the bearing parts 1131041 (e) on both sides. The partition plate fi21 is constructed by connecting two divided plates (c) which can prevent wear and tear with the bearing part I of the frame (le), a connecting piece (support) of the frame, and an mg3v portoy (2). Opposite side of joint of dividing plate (c) (c)?
Since the suction passage (2G) is crimped to the inner wall of the airtight container (1) and is formed at a position perpendicular to the dividing direction of the joint, two dividing plates are used when inserting the shrink fit or driving the collar. It is possible to prevent misalignment of the journal hole formed by (to).

As described below, the present invention accommodates an electric element and a plurality of rotary compression elements in a completely sealed container, connects the two elements with a rotation shaft, and provides bearings on both sides sandwiching the plurality of rotary compression elements. In the rotary compressor, the partition plate interposed between the rotary compression elements is formed of two divided plates, and a journal/hole is provided spanning both of the divided plates to form an intermediate bearing portion of the rotating shaft. Since the suction passage provided in the partition plate is formed at a position perpendicular to the dividing direction of the two dividing plates, wear of the bearings provided on both sides of the plural rotary compression elements is reduced. The journal hole formed in the partition plate is used as an intermediate bearing part and the suction-I! Because the path is separated by two (1) νfil plates in the dividing direction, d
Practical effects such as preventing displacement of the journal hole when connecting by driving a suction collar into the suction passage are achieved. ′

[Brief explanation of drawings]

FIG. 1 is a longitudinal cross-sectional view of a rotary compressor showing one embodiment of the present invention, and FIG. 2 is a cross-sectional view of the main parts. 11)...Airtight container, (2)...Pal, recommendation element,...
+3) +4+... Rotating compression element, (7)... Rotating shaft, 1121... Partition plate,! 131141...+11
+ Receiving part,... Suction passage, H seal... Dividing plate, (
c)...Intermediate bearing part, ψ)...Journal hole.

Claims (1)

[Claims] 1. In a rotary compressor in which an electric element and a plurality of rotary compression elements are housed in a closed container, connected to the leg element by a rotation shaft, and bearings are provided on both sides to sandwich the plurality of rotary compression elements. , a partition plate interposed between the rotary compression elements is formed of two divided plates, and a journal hole is provided spanning both side plates to form an intermediate bearing portion of the rotating shaft, and provided in the partition plate. A rotary compressor characterized in that the suction passage is formed at a position perpendicular to the dividing direction of the two dividing plates.