JP7372967B2 - jig - Google Patents

Description

The present invention relates to a compressor and a jig.

BACKGROUND ART Conventionally, as a compressor used for refrigeration and air conditioning, a compressor as described in Patent Document 1, for example, has been known. This type of compressor includes a housing, a rotating shaft that extends vertically within the housing and is rotated by an electric motor, and a compression section that compresses refrigerant as the rotating shaft rotates.
Many of these compressors are small and generally do not weigh very much.

JP2018-66314A

However, in recent years, there has been a strong demand for compressors with larger capacity, and as the capacity increases, compressors become larger. Therefore, in the process of assembling such a large compressor, it is necessary to change the attitude of the housing to facilitate assembly.

The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a jig that can easily change the attitude of a housing.

The present invention employs the following aspects in order to solve the above problems and achieve the objects.
(1) A jig according to one aspect of the present invention includes a rotating shaft extending along an axis, a bearing that supports the rotating shaft rotatably around the axis, a motor that rotates the rotating shaft, and a rotating shaft that rotates the rotating shaft. a compression section that compresses a refrigerant by rotation of the housing, and a housing that accommodates the rotating shaft, the bearing, the motor, and the compression section, and extends in a circumferential direction around the axis of the housing. A mounting portion for hanging the housing is provided on an outer peripheral side surface, and the mounting portion is provided at a first position and a second position shifted by 180° in the circumferential direction of the housing from the first position. a jig for gripping the mounting part of the housing and rotatably supporting the housing in a compressor, the jig comprising: a gripping part that is removably attached to the mounting part and grips the mounting part; The housing includes a handle portion that rotates the gripping portion around a rotation axis extending in a direction intersecting the central axis of the housing while the gripping portion grips the mounting portion.

According to the compressor according to the above aspect, for example, a lifting jig can be attached to the mounting portion provided on the housing, and the compressor can be lifted by crane equipment. At this time, since the mounting part is arranged on the outer peripheral side of the housing, the housing can be rotated in a direction perpendicular to the axis of the rotating shaft when assembling the compressor, that is, around the center axis of the housing, or in an inverted position. Can be easily changed. Therefore, the assembly work when assembling the compressor can be performed efficiently.
Further, according to such a configuration, the housing can be gripped using the mounting portions provided at the first position and the second position, which are mutually displaced by 180 degrees in the circumferential direction. That is, since the housing can be supported at positions on both sides of the central axis of the housing, the housing can be rotated or reversed more reliably and easily around the gripping position.

(2) In the jig described in (1) above, a plurality of the mounting portions may be provided at intervals in the axial direction of the rotating shaft.

In this case, since it is possible to grip the housing using multiple mounting parts at gripping positions in the circumferential direction, the gripping force can be increased, ensuring sufficient gripping force, and maintaining a stable posture. The housing can be rotated or flipped.

(3) In the jig described in (1) or (2) above, the attachment portion may be provided in a thick portion that bulges outward in the radial direction on the outer peripheral side surface of the housing.

Since the attachment portion is provided in the thick part of the housing, the strength of the portion of the housing where the attachment portion is provided can be increased. Therefore, the housing can be rotated or reversed more reliably.

The housing can be gripped by attaching the gripping part of the jig of the above aspect to the attachment part provided on the outer circumferential side of the housing. By rotating the handle portion of the jig, the housing gripped by the gripping portion can be easily rotated or reversed around the central axis of the housing. Therefore, the compressor assembly work can be performed efficiently.
( 4 ) A jig according to another aspect of the present invention includes a rotating shaft extending along an axis, a bearing that supports the rotating shaft rotatably around the axis, a motor rotating the rotating shaft, and a rotating shaft extending along the axis. A compression section that compresses refrigerant by rotation of a shaft, and a housing that accommodates the rotating shaft, the bearing, the motor, and the compression section, and a mounting for hanging the housing on an outer peripheral side of the housing. A jig that grips the mounting part of the housing in a compressor in which the housing is provided with a part and rotatably supports the housing, the jig being detachably provided on the mounting part and gripping the mounting part. a handle portion that rotates the gripping portion around a rotation axis extending in a direction intersecting the central axis of the housing while the gripping portion grips the mounting portion;
It is equipped with

According to the jig according to each aspect of the present invention, the attitude of the compressor housing can be easily changed.

FIG. 1 is a longitudinal sectional view showing the configuration of a two-stage compressor according to a first embodiment of the present invention. FIG. 2 is a perspective view of the two-stage compressor shown in FIG. 1, and is a view of the first suspension bolt hole viewed diagonally from the front. FIG. 3 is a perspective view of the two-stage compressor shown in FIG. 1, and is a view of the second hanging bolt hole seen diagonally from the front. FIG. 4A is a front view showing a state in which the housing main body is gripped by a jig, and is a diagram in which the housing main body is in a posture with its rotational axis directed in the horizontal direction. FIG. 4B is a front view showing a state in which the housing body is gripped by a jig, and is a view in which the housing body is rotated to a position with the rotation axis direction facing upward.

Hereinafter, a compressor and a jig according to embodiments of the present invention will be described based on the drawings. These embodiments represent one aspect of the present invention, do not limit the present invention, and can be arbitrarily modified within the scope of the technical idea of the present invention.

As shown in FIG. 1, a compressor 1 according to the present embodiment is a vertical semi-hermetic compressor used for, for example, an air conditioner or a refrigeration device. However, the type of compressor 1 is not limited to that of this embodiment.

The compressor 1 includes a housing 2, a rotating shaft 3, an upper bearing 4A and a lower bearing 4B, an electric motor 5, a rotary compression section 6, a scroll compression section 10, and a suction pipe 7. The rotation shaft 3 extends along an axis (rotation axis O, which will be described later). The upper bearing 4A and the lower bearing 4B support the rotary shaft 3 rotatably around the rotation axis O. The electric motor 5 rotates the rotating shaft 3. The rotary compression section 6 compresses the refrigerant by rotation of the rotating shaft 3. The suction pipe 7 allows refrigerant to be introduced into the compression chambers 63A and 63B of the rotary compression section 6.
The compressor 1 of this embodiment is a two-stage compressor that includes both a rotary compression section 6 and a scroll compression section 10, but is a single-stage compressor that is provided with only one of the rotary compression section 6 and the scroll compression section 10. However, the compressor 1 is not limited to the type of this embodiment.

Here, the central axis of the housing 2 and the rotating shaft 3 are arranged on a common axis extending in the vertical direction (up and down direction), and this common axis is hereinafter referred to as a rotating axis O. The rotating shaft 3 is disposed so that its extension direction is the vertical direction, and is housed in the housing 2 so as to be rotatable around the rotational axis O.

The housing 2 is formed by casting or the like, extends in the vertical direction, and houses the rotating shaft 3, bearings 4A, 4B, electric motor 5, rotary compression section 6, and scroll compression section 10. The housing 2 includes a cylindrical main body 21, and an upper lid 22 and a lower lid 23 that close the upper and lower openings of the main body 21. The inside of the housing 2 is sealed by the upper lid part 22 and the lower lid part 23. An opening 24 is formed in the housing 2 above the cylinders 60 (60A, 60B) in the lower part of the side wall. The suction pipe 7 is inserted into the opening 24 and fixed with the pipe axis directed in the horizontal direction.

An oil reservoir is formed at the bottom of the housing 2 by collecting oil. The liquid level of the oil reservoir when the oil is initially filled is located above the rotary compression section 6. Thereby, the rotary compression section 6 is driven in the oil pool.

The upper lid portion 22 is provided with a discharge pipe 13 that penetrates the peripheral wall portion in the thickness direction and communicates with the inside of the housing 2 . The discharge pipe 13 discharges the compressed refrigerant to the outside of the housing 2.
As shown in FIGS. 2 and 3, a plurality of hanging bolts 27 are removably provided on the upper surface 22a of the upper lid portion 22. As shown in FIGS. These lifting bolts 27 can be used to lift the housing 2 with a crane or the like.

Inside the main body portion 21, a refrigerant flow path 28 is provided extending in the vertical direction, through which the refrigerant compressed by the rotary compression portion 6 flows toward the scroll compression portion 10. The refrigerant flow path 28 is a space formed between a stator 52 of the electric motor 5, which will be described later, and an inner circumferential surface of the main body portion 21. As shown in FIG. 2, a thick portion 21b is formed on the outer circumferential side surface 21a of the main body 21 corresponding to the position where the refrigerant flow path 28 is provided. The thick portion 21b is formed to bulge outward in the radial direction from the outer peripheral side surface 21a of the main body portion 21. The thick portion 21b has a rectangular parallelepiped shape extending in the direction of the rotational axis O as a longitudinal direction. Here, the outer circumferential side surface 21a of the main body part 21 is a side surface of the main body part 21 that extends in the circumferential direction and revolves around the rotation axis O. A pair of first suspension bolt holes 25, 25 (attachment portions) are provided on the outer surface of the thick portion 21b at intervals in the vertical direction (rotation axis O direction). A female thread into which a mounting bolt 86 (see FIG. 4B) can be screwed is formed in the first suspension bolt holes 25, 25. At the position where the first suspension bolt holes 25, 25 are formed, the thick portion 21b is recessed radially inward, so that a fixing portion 85 of a gripping portion 82, which will be described later, is just fitted therein (Fig. 4A and FIG. 4B).

As shown in FIG. 3, the main body portion 21 is provided with the thick portion 21b at a second position that is 180° in the circumferential direction of the housing 2 from the first position where the thick portion 21b is provided. A pair of protrusions 21c, 21c are formed at intervals. The convex portion 21c protrudes radially outward from the outer peripheral side surface 21a. The convex portion 21c has a cylindrical shape with the radial direction as the longitudinal direction. Second hanging bolt holes 26 (attachment portions) are provided on the protruding end surfaces of the convex portions 21c, respectively. A female thread into which a mounting bolt 85 (see FIG. 4B) can be screwed is formed in the second hanging bolt holes 26, 26.
Each of the first suspension bolt holes 25 and each of the second suspension bolt holes 26 are arranged at the same position in the rotation axis O direction so as to form a pair.

The electric motor 5 is housed in the vertical center of the housing 2, as shown in FIG. The electric motor 5 includes a rotor 51 and a stator 52. The rotor 51 is fixed to the outer peripheral surface of the rotating shaft 3 and is arranged above the rotary compression section 6 . The stator 52 is arranged so as to surround the outer peripheral surface of the rotor 51 and is fixed to the inner surface of the main body portion 21 of the housing 2 .
A power source (not shown) is connected to the electric motor 5 via a terminal 9. The electric motor 5 rotates the rotating shaft 3 using electric power from this power source.

The upper bearing 4A and the lower bearing 4B are arranged to sandwich the rotary compression section 6 from above and below. The upper bearing 4A and the lower bearing 4B are made of, for example, a metal material, and are fixed to a cylinder 60 that constitutes the rotary compression section 6 by, for example, bolting.
Further, the upper bearing 4A is fixed to the housing 2. The rotating shaft 3 is rotatably supported around a rotational axis O by an upper bearing 4A and a lower bearing 4B.

The rotary compression unit 6 is disposed at the bottom of the housing 2 below the electric motor 5 and compresses the refrigerant sucked in from the suction pipe 7. The rotary compression section 6 includes a pair of disc-shaped cylinders 60 (60A, 60B), an eccentric shaft section 61 provided integrally with the rotation shaft 3 at a position eccentric to the rotation shaft 3, and an eccentric shaft section 61. It has a rotating piston rotor 62. The refrigerant is compressed by eccentric rotation of the piston rotor 62 in the compression chambers 63A, 63B of each cylinder 60A, 60B.

, the cylinder 60 of the rotary compression section 6 is provided with a discharge hole (not shown). From this discharge hole, the refrigerant compressed by the rotary compression section 6 is discharged toward the internal space of the housing 2 at an intermediate pressure, that is, the refrigerant flow path 28 .

The scroll compression section 10 further compresses the refrigerant from the refrigerant flow path 28. The scroll compressor 10 includes a spiral orbiting scroll 11 that rotates as the rotation shaft 3 rotates, and a fixed scroll 12 that engages with the orbit scroll 11 from above in the direction of the rotation axis O and is fixed to the housing 2. ing. The refrigerant compressed by the scroll compressor 10 is discharged to the outside of the housing 2 through the discharge pipe 13.

Next, the jig 8 used when assembling the compressor 1 described above will be explained using FIGS. 4A and 4B.
The jig 8 is a jig for gripping the suspension bolt holes 25 and 26 of the housing 2 of the compressor 1 and rotatably supporting the housing 2.
The jig 8 includes a pair of support arms 81, a grip part 82 provided in the main body part 21 of the housing 2 and removably attached to the suspension bolt holes 25 and 26, and a handle part 83 for rotating the grip part 82. It is equipped with The arms 81A and 81B are spaced apart from each other by a distance that allows them to grip the main body 21 from the radial direction. Further, the arms 81A and 81B are connected to each other by a connecting frame 80 at their upper ends. The connection frame 80 is integrally provided with a plurality of support parts 80a to which hooks H and wires W can be attached so as to protrude upward on the side opposite to the arms 81A, 81B.

The grip portion 82 is provided on each of the pair of arms 81A and 81B so as to face each other. The grip part 82 includes a rotating part 84 and a fixed part 85 fixed to the rotating part 84. The fixed part 85 is a long member, and the central part in the length direction is fixed to the rotating part 84. The fixing portion 85 is formed with a bolt hole 85a that extends through the fixing portion 85 in a direction in which the pair of grip portions 82, 82 face each other, and is provided at a position that matches the hanging bolt holes 25, 26 of the housing 2. The housing 2 can be gripped by the jig 8 by inserting the mounting bolt 86 into the bolt hole 85a and screwing the mounting bolt 86 into the hanging bolt holes 25, 26 and fastening them.

The handle portion 83 includes a power transmitting portion 83a that is supported by the arm 81A on the outside of the arm 81A and rotates the rotating portion 84, and a handle body 83b that applies rotational force to the power transmitting portion 83a. By rotating the handle body 83b, the housing 2 held by the gripping portion 82 is changed to a posture rotated at a desired rotation angle.

Next, the effects of the compressor and jig described above will be specifically explained based on the drawings.
In the compressor 1 according to the present embodiment, as shown in FIGS. 2 and 3, the first hanging bolt hole 25 and the second hanging bolt hole 26 provided in the main body part 21 of the housing 2 are equipped with the above-mentioned jig, for example. 8 can be attached and lifted up via a wire W and a hook H using, for example, crane equipment. At this time, since the suspension bolt holes 25 and 26 are arranged on the outer circumferential side surface 21a of the main body part 21, as shown in FIGS. The main body portion 21 can be rotated about the center of rotation C or easily changed to an inverted posture. Therefore, even if the compressor 1 is large-sized, the assembly work of the compressor 1 can be performed efficiently.

Moreover, in this embodiment, the first hanging bolt hole 25 and the second hanging bolt hole 26 provided in the thick part 21b and the convex part 21c which are shifted by 180 degrees in the circumferential direction in the main body part 21 of the housing 2 are used. The housing 2 (main body portion 21) can be gripped with the handle (see FIGS. 4A and 4B). In other words, since the main body part 21 can be supported at positions on both sides of the central axis, the main body part 21 can be rotated or reversed more reliably and easily around the gripping position.

Furthermore, in the present embodiment, two mounting portions (first hanging bolt hole 25 or second hanging bolt hole 26) are arranged at intervals in the rotational axis O direction at the gripping position in the circumferential direction of the main body portion 21. Since the gripping force can be increased, sufficient gripping force can be ensured, and the main body part 21 can be rotated or reversed in a stable posture.

In addition, in this embodiment, since the first hanging bolt hole 25 is provided in the thick part 21b of the main body part 21, the mounting part (first hanging bolt hole 25 like this embodiment) in the housing 2 is provided. The strength of the damaged parts can be increased. Therefore, the housing 2 can be rotated or reversed more reliably.

In addition, in the jig 8 according to the present embodiment, as shown in FIGS. 4A and 4B, the jig is inserted into the first hanging bolt hole 25 and the second hanging bolt hole 26 provided in the outer peripheral side surface 21a of the main body part 21 of the housing 2. By attaching the grip portion 82 of No. 8, the main body portion 21 can be gripped. By rotating the handle portion 83 of the jig 8, the gripped main body portion 21 can be easily rotated around the rotation center C or reversed. Therefore, even if the compressor 1 is large-sized, assembly work can be performed efficiently.

Although the embodiments of the compressor 1 and jig 8 according to the present invention have been described above, the present invention is not limited to the above embodiments, and can be modified as appropriate without departing from the spirit thereof.

For example, in the present embodiment, the mounting portions (the first hanging bolt hole 25 and the second hanging bolt hole 26) are provided in the thick portion 21b and the convex portion 21c of the main body portion 21, which are offset by 180 degrees in the circumferential direction. However, it is not limited to this position. For example, the position is not limited to two positions (first position, second position) shifted by 180 degrees in the circumferential direction, but may be located at only one position in the circumferential direction. If the mounting portion is provided at only one location in the circumferential direction, the housing 2 will be supported in a cantilevered manner, but if reliable support force (gripping force) is obtained, the housing 2 will be gripped and rotated at only one location. , or can be reversed.
Further, the attachment portion may not be provided on the thick portion 21b or the convex portion 21c, but may be provided directly on the outer circumferential side surface 21a of the main body portion 21, for example.

Further, in this embodiment, two first hanging bolt holes 25 and two second hanging bolt holes 26 are provided at intervals in the direction of the rotation axis O, but it is also possible to have one hole or three holes. It does not matter if it is more than that.

Furthermore, in this embodiment, the mounting portions (the first hanging bolt holes 25 and the second hanging bolt holes 26) are provided in the main body 21 of the housing 2, but if the mounting portions are provided on the outer circumferential side of the housing 2, It is not limited to the outer peripheral side surface 21a of 21.

Furthermore, in the embodiment described above, a configuration including the support arm 81 and the rotatable handle part 83 shown in FIGS. 4A and 4B is shown as an example of a jig to be attached to the mounting part. The jig that can be attached to is not limited to the above jig. For example, it is of course possible to attach an eye bolt to the mounting portion, hang a wire to the eye bolt, and lift it up with a crane.

Additionally, the housing 2, rotating shaft 3, upper bearing 4A, lower bearing 4B, electric motor 5, rotary compression section 6 (cylinder 60, eccentric shaft section 61, piston rotor 62), scroll compression section 10 (orbiting scroll 11, fixed scroll 12) The shape, size, etc. of the suction pipe 7 can be set as appropriate. For example, in this embodiment, a twin rotary type compressor having a pair of cylinders 60A and 60B is described, but a single rotary type compressor may be used.

In addition, the components in the embodiments described above may be replaced with well-known components as appropriate without departing from the spirit of the present invention, and the embodiments described above may be combined as appropriate.

According to the compressor and jig of the present invention, the attitude of the housing can be easily changed.

1 Compressor 2 Housing 3 Rotating shaft 4A Upper bearing 4B Lower bearing 5 Electric motor 6 Rotary compression section (compression section)
8 Jig 10 Scroll compression section (compression section)
11 Orbiting scroll 12 Fixed scroll 21 Main body portion 21a Outer peripheral side surface 21b Thick wall portion (first position)
21c Convex portion (second position)
25 1st hanging bolt hole (mounting part)
26 2nd hanging bolt hole (mounting part)
28 Refrigerant flow path 60 (60A, 60B) Cylinder 63A, 63B Compression chamber 80 Connection frame 80a Support part 81 (81A, 81B) Support arm 82 Grip part 83 Handle part 83a Power transmission part 83b Handle body 84 Rotating part 85 Fixed part 86 Mounting bolt W Wire H Hook O Rotation axis (axis)
C Center of rotation

Claims (4)

a rotating shaft extending along the axis;
a bearing that rotatably supports the rotating shaft around the axis;
a motor that rotates the rotating shaft;
a compression section that compresses the refrigerant by rotation of the rotating shaft;
a housing that accommodates the rotating shaft, the bearing, the motor, and the compression section;
Equipped with
A mounting portion for hanging the housing is provided on an outer circumferential side surface of the housing that extends in a circumferential direction and revolves around the axis,
The mounting portion grips the mounting portion of the housing of the compressor provided at a first position and a second position shifted by 180 degrees in the circumferential direction of the housing from the first position, and A jig rotatably supporting the
a grip part that is removably attached to the attachment part and grips the attachment part;
a handle portion that rotates the gripping portion around a rotation axis extending in a direction intersecting a central axis of the housing while the gripping portion grips the mounting portion;
A jig equipped with The jig according to claim 1, wherein a plurality of the mounting portions are provided at intervals in the axial direction of the rotating shaft. The jig according to claim 1 or 2, wherein the attachment portion is provided in a thick wall portion that bulges outward in the radial direction on an outer peripheral side surface of the housing. a rotating shaft extending along the axis;
a bearing that rotatably supports the rotating shaft around the axis;
a motor that rotates the rotating shaft;
a compression section that compresses the refrigerant by rotation of the rotating shaft;
a housing that accommodates the rotating shaft, the bearing, the motor, and the compression section;
Equipped with
A jig for rotatably supporting the housing by gripping the mounting part of the housing in a compressor, in which a mounting part for hanging the housing is provided on an outer circumferential side of the housing,
a grip part that is removably attached to the attachment part and grips the attachment part;
a handle portion that rotates the gripping portion around a rotation axis extending in a direction intersecting a central axis of the housing while the gripping portion grips the mounting portion;
A jig equipped with

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