JP2010077875A - Hermetically-sealed compressor and refrigerating cycle device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hermetically-sealed compressor capable of reducing a loading space in an accumulator mounting direction of the hermetically-sealed compressor and reducing the size and weight of a product loaded thereon. <P>SOLUTION: In the hermetically-sealed compressor, an accumulator is mounted to a sealed container for storing a motor and a compression mechanism, a bottom of the accumulator is connected to the compression mechanism by a suction pipe, and the middle of the suction pipe is formed in a shape away from the sealed container so that a maximum distance L<SB>1</SB>between the center c of the sealed container and the outer peripheral face of the accumulator becomes a maximum distance L<SB>2</SB>between the center c and the outer peripheral face of the suction pipe or shorter. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a hermetic compressor and a refrigeration cycle apparatus, and more particularly to a hermetic compressor and a refrigeration cycle apparatus in which the shape of a suction pipe connecting a compressor body and an accumulator is improved.

  Conventionally, in a hermetic compressor, an accumulator is attached to one side of the hermetic container with a band or the like, the bottom of the accumulator and the compression mechanism are connected by a suction pipe, and the suction pipe is connected to the bottom of the accumulator. It is bent into a simple L-shape consisting of a vertical part extending vertically downward and a horizontal part bent at a right angle from the vertical part and connected to the compression mechanism part. In order to improve manufacturability, the suction pipe is connected to the center of the bottom of the accumulator.

  For this reason, since the outer peripheral surface of the accumulator on the side of the anti-sealed container is outside the outer peripheral surface of the suction pipe on the side of the anti-sealed container, the hermetic compressor described in Patent Document 1 The distance to the outer peripheral surface becomes longer, and the hermetic compressor provided with the accumulator becomes larger.

  Furthermore, the bending radius of the bent portion of the suction pipe needs to be a predetermined bending radius in order to prevent the suction pipe from being crushed. Therefore, even when an accumulator having a small volume and a small diameter is provided, the predetermined bending radius of the suction pipe is required. Because of this bending radius, the accumulator could not be brought very close to the sealed container, and the whole hermetic compressor could not be made very small.

Therefore, when a conventional hermetic compressor is mounted on a product such as an air conditioner, the mounting space needs to be increased, and there is a problem that the mounted product cannot be reduced in size and weight. .
JP 2001-280761 A

  The present invention has been made in consideration of the above-described circumstances, and provides a hermetic compressor capable of reducing the mounting space in the accumulator mounting direction of the hermetic compressor and reducing the size and weight of the product to be mounted. For the purpose.

  Another object of the present invention is to provide a small and lightweight refrigeration cycle apparatus.

  In order to achieve the above-described object, a hermetic compressor according to the present invention houses an electric motor unit and a compression mechanism unit driven by the electric motor unit in an airtight container, and an accumulator on the outer surface of the airtight container. In the hermetic compressor that sucks the refrigerant into the compression mechanism via a suction pipe connected to the bottom of the accumulator, the maximum distance between the center of the hermetic container and the outer peripheral surface of the accumulator is The suction pipe is formed in such a shape that the middle of the suction pipe is away from the sealed container so as to be equal to or less than the maximum distance between the center and the outer peripheral surface of the suction pipe.

  According to the hermetic compressor according to the present invention, it is possible to provide a hermetic compressor capable of reducing the mounting space in the accumulator mounting direction of the hermetic compressor and reducing the size and weight of the product to be mounted. .

  Moreover, according to the refrigerating cycle apparatus which concerns on this invention, a small and lightweight refrigerating cycle apparatus can be provided.

  A hermetic compressor and a refrigeration cycle apparatus using the same according to an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a conceptual diagram of a hermetic compressor and a refrigeration cycle apparatus using the same according to an embodiment of the present invention.

  As shown in FIG. 1, a refrigeration cycle apparatus 21 according to the present invention is formed by communicating a hermetic compressor 1, a condenser 22, an expansion device 23, and an evaporator 24 according to the present embodiment in a cycle. The

  The hermetic compressor 1 of the present embodiment includes a compressor body 2 and an accumulator 3, and the compressor body 2 includes a hermetic container 4, and the hermetic container 4 includes an electric motor unit (not shown), The compression mechanism part connected with the electric motor part via the rotating shaft is accommodated.

  The accumulator 3 has a relatively small cylindrical shape with a shorter length and a smaller diameter than the conventional one, and is erected so as to be parallel to the sealed container 4. It is fixed to the outer surface of the sealed container 4.

  Furthermore, the bottom 3 a of the accumulator 3 and the one-cylinder compression mechanism are connected by a suction pipe 6, and the refrigerant that has returned to the accumulator 3 and the oil that accumulates in the bottom 3 a in the accumulator 3 through the suction pipe 6. Is returned to the compressor body 2 and sent to the compression mechanism, the refrigerant is compressed to high temperature and pressure, and the oil lubricates the compressor body 2.

  The suction pipe 6 has, for example, a substantially square shape, and is composed of a straight portion 6a arranged in the horizontal direction and a bent portion 6b arranged in the vertical direction. One end of the straight portion 6a is bent to the compression mechanism portion and the other end is bent. The other end of the bent portion 6 b is connected to the accumulator 3.

By the suction pipe 6 to the shape to a substantially maximum distance of the maximum distance L ₁ between the outer peripheral surface 3b of the center c and the accumulator 3 of the closed container 4, and the outer peripheral surface 6c of the center c and the suction pipe 6 L ₂ The suction pipe 6 is moved away from the sealed container 4 so as to be as follows.

As shown FIG. 2, the sealed container 4 is provided with three fixed legs 4a mounted at equal intervals at the bottom, 4a, and 4a, the maximum distance _{L 1} is centered on the center c fixed leg 4a, 4a, 4a It is preferable to be within the range of an imaginary circle C passing through the tip portions 4a ₁ , 4a _{1 and} 4a ₁ .

  In the figure, reference numeral 11 denotes a discharge pipe, and reference numeral 12 denotes a terminal cover.

The hermetic compressor according to the present embodiment has the above-described structure, and connects the accumulator 3 and the compression mechanism unit using the substantially hexagonal suction pipe 6 so that the center c of the hermetic container 4 and the accumulator 3 are connected. maximum distance L ₁ between the outer peripheral surface 3b is the maximum distance L ₂ following the outer peripheral surface 6c of the center c and the suction pipe 6, it is possible to reduce the mounting space of the mounting direction of the accumulator 3 of the hermetic compressor 1. Thereby, the size and weight reduction of the product in which this hermetic compressor is mounted can be achieved.

The maximum distance _{L 1} between the outer peripheral surface 3b of the center c and the accumulator 3 of the closed container 4, the virtual circle passing through the fixed leg 4a around the center c, 4a, the distal end portion _{4a 1,} 4a 1, 4a ₁ of 4a Since it is within the range of C, the radial dimension of the compressor is reduced, the space for installing the compressor is reduced, and when mounted on the product, it is not affected by the outer diameter of the accumulator and the suction pipe. The piping and soundproofing material of the product on which the hermetic compressor is mounted can be designed, and the product can be reduced in size and weight.

  According to the hermetic compressor of the present embodiment, a hermetic compressor that can reduce the mounting space in the accumulator mounting direction of the hermetic compressor and reduce the size and weight of the mounted product is realized.

  Further, according to the refrigeration cycle apparatus of the present embodiment, a small and lightweight refrigeration cycle apparatus is realized.

1 is a conceptual diagram of a hermetic compressor and a refrigeration cycle apparatus using the same according to an embodiment of the present invention. The top view of the hermetic compressor concerning one embodiment of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Sealed compressor, 2 ... Compressor main body, 3 ... Accumulator, 3a ... Bottom part, 3b ... Outer peripheral surface, 4 ... Sealed container, 4a ... Fixed leg, 4a ₁ ... Tip part, 5 ... Fixing tool, 5a ... Installation Member 5b ... band 6 ... suction pipe 6a ... straight part 6b ... bent part 6c ... outer peripheral surface 11 ... discharge pipe 12 ... terminal cover 21 ... refrigeration cycle device 22 ... condenser 23 ... expansion Apparatus, 24 ... evaporator, L ₁ ... maximum distance, L ₂ ... maximum distance, c ... center, C ... virtual circle.

Claims (3)

An electric motor unit and a compression mechanism unit driven by the electric motor unit are accommodated in the sealed container, and an accumulator is fixed to the outer surface of the sealed container, and a suction pipe connected to the bottom of the accumulator is provided. In the hermetic compressor that sucks the refrigerant into the compression mechanism,
A shape in which the middle of the suction pipe is moved away from the closed container so that the maximum distance between the center of the closed container and the outer peripheral surface of the accumulator is equal to or less than the maximum distance between the center and the outer peripheral surface of the suction pipe. A hermetic compressor characterized by being formed. A fixed leg is provided at a lower part of the sealed container, and a maximum distance between the center and the outer peripheral surface of the accumulator is set within a range of a virtual circle passing through the tip of the fixed leg with the center as the center. The hermetic compressor according to claim 1. A refrigeration cycle apparatus comprising the hermetic compressor according to claim 1, a condenser, an expansion device, and an evaporator.

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