JPH10205454A - Compressor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the generation of vibration of a piping to interconnect the compressor bodies of a twin compressor. SOLUTION: A support bed 5 is fixed at a base 10 through a vibration isolation rubber 7. First and second compressor bodies 4a and 4b, both consisting of the same kind of a scroll compressor, are fixed at the support bed 5 by means of bolts 9. The outlet pipe 15 of an accumulator 14 is connected to suction pipes 15a and 15b. Discharge pipes 17a and 17b, are joined together to form a common discharge pipe 17 and connected to a refrigerant circuit. The compressor bodies 4a and 4b are interconnected through an uniform oil pipe 18. During operation of a compressor 4, the first and second compressor bodies 4a and 4b and the support bed 5 form a single compression structure 41, which is vibrated as an integral unit. Refrigerant pipings 15a, 15b, 17a, 17b, and 18 are also vibrated in an integrally formed state.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a countermeasure against vibration of a compressor having a plurality of compressor bodies.

[0002]

2. Description of the Related Art Conventionally, in a package air conditioner or the like, a large-capacity compressor has been formed by connecting a plurality of compressor bodies.

[0003] For example, as shown in FIG.
A so-called twin compressor in which two compressor bodies (b) of the same type are arranged in parallel in (a) is known.

The suction pipes (b1, b1) of the compressor bodies (b, b) are joined and connected to the outlet of the accumulator (c). On the other hand, the discharge pipes (b2, b2) of the compressor bodies (b, b) merge into a discharge pipe (d), which is connected to a refrigerant circuit (not shown). The compressor bodies (b, b) are connected to each other via an oil equalizing pipe (e). Thus, the compressor bodies (b, b) are connected to each other by the refrigerant pipes (b1), (b2), (e).

[0005] Each compressor body (b, b) is fixed to the base of the outdoor unit (a) by bolts (f). Compressor body
Since (b, b) vibrates violently during operation, a vibration-proof rubber is usually provided between the compressor body (b, b) and the base to suppress the vibration.

[0006]

However, in the case of a conventional twin compressor, the compressor bodies (b, b) are connected to each other by a refrigerant pipe (b1),
Each of the compressor bodies (b, b) vibrated individually because they were only connected via (b2) and (f). Accordingly, the refrigerant pipes (b1), (b2), and (e) also vibrated.

The vibration of the refrigerant pipes (b1), (b2), and (e) is caused by the individual vibration of each compressor body (b, b), so that the interference sometimes causes a large vibration. Moreover, the refrigerant pipes (b1), (b2), and (e) may be simultaneously pulled or compressed in the opposite direction due to individual vibrations. Therefore, refrigerant pipes (b1) connecting the compressor bodies (b, b) to each other,
In (b2) and (e), breakage due to vibration was easily caused.

In order to prevent the above-described damage to the refrigerant piping, piping design is performed in consideration of vibration at the stage of designing the outdoor unit (a). However, the design of the vibration isolation of the pipe is technically difficult and requires a great deal of labor. Therefore, in designing the air-conditioning unit, a heavy burden is imposed on the anti-vibration design.

Further, since the vibration of the compressor body (b, b) greatly varies depending on the operation frequency, it is very difficult to design the refrigerant pipe so as not to cause vibration in all operation states. .

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a compressor having a plurality of compressor bodies, which suppresses the vibration of piping connecting the compressor bodies. To prevent damage to the piping and to facilitate the design of the piping.

[0011]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a compression structure which forms a single vibrator by firmly fixing a plurality of compressor bodies to each other, and provides a shock absorber. This structure was fixed to the base via a material.

More specifically, the means implemented by the first aspect of the present invention is that a plurality of compressor bodies (4a, 4b,...)
a, 15b, 17a, 17b, 18), the compressor bodies (4a, 4b, ...) are fixed to each other to form a single compression structure (41), The structure is such that the compression structure (41) is fixed to the base (10) via the cushioning material (7).

According to the above-mentioned invention specific matter, each compressor body (4a, 4b,...) Vibrates integrally during operation of the compressor. In addition, piping connecting each compressor body (4a, 4b, ...)
(15a, 15b, 17a, 17b, 18) are also the compressor bodies (4a, 4b,
・ ・) And vibrates together. Therefore, each compressor body
Each vibration of (4a, 4b,...) Is suppressed from giving an excessive stress to the refrigerant pipe, and the risk of breakage of the pipe (15a, 15b, 17a, 17b, 18) is reduced. Furthermore, each compressor body (4a, 4b, ...), which has become a single structure, is
Since it is fixed to (10), the compressor body (4a, 4b, ...)
And the vibration of the pipes (15a, 15b, 17a, 17b, 18) is suppressed.

According to a second aspect of the present invention, there is provided a compressor according to the first aspect, wherein each of the compressor bodies (4a, 4b,
...) are fixed to a common support base (5), and each compressor body
(4a, 4b, ...) and the support (5) are a single compression structure (4
1), and the support (5) is connected to the base (1) via the cushioning material (7).
0).

According to the above-mentioned specific features of the invention, a single compression structure (41) can be easily formed only by fixing the compressor bodies (4a, 4b,...) To the support (5).

According to a third aspect of the present invention, there is provided a compressor according to the first aspect, wherein each compressor body (4a, 4b,
..) Are fixedly joined to the casings (12a, 12b,...).

According to the above-mentioned invention specifying matter, each compressor body (4
a, 4b, ...) are firmly fixed and a single compression structure (4
1) is reliably formed.

According to a fourth aspect of the present invention, in the compressor according to the first aspect, each of the compressor main bodies (4a, 4b,
..) Are a first compressor main body (12a) and a second compressor main body (12b) provided in the air conditioner unit (1) and circulating a refrigerant.

According to the above features of the invention, it is possible to obtain a twin compressor in which the vibration of the pipe is small and the pipe is hardly damaged.

[0020]

Embodiment 1 Hereinafter, embodiments of the present invention will be described with reference to the drawings.

As shown in FIGS. 1 and 2, the first embodiment
The compressor (4) according to (1) is housed in the outdoor unit (1) of the air conditioner.

The casing (11) of the outdoor unit (1) is provided with a mesh portion, and a plate-fin tube type heat exchanger (2) bent in a U-shape is disposed on the inner periphery thereof. . A blower (3) for generating an airflow passing between the fins of the heat exchanger (2) is provided at an upper portion in the outdoor unit (1). In other words, the blower (3) and the heat exchanger (2) pass through the space between the fins of the heat exchanger (2) when the air sucked from the outside of the casing (11) in a substantially horizontal direction changes the traveling direction by approximately 90 degrees. After that, the air is discharged from the outlet (11a) at the upper part of the outdoor unit (1).

The bottom plate of the outdoor unit (1) is a base for the compressor (4).
(10), and the base (10) has a rectangular flat support (5).
Has been fixed. Specifically, six bolt holes are provided in the outer peripheral portion of the support base (5), and the bolts (6) are fastened through these bolt holes, so that the support base (5)
Is fixed to the base (10). The bolt (6) is fastened by penetrating through the vibration isolating rubber (7) having a circular through hole, and as a result, the vibration isolating rubber (7) is interposed between the support (5) and the base (10). It is interposed. As described above, the support base (5) is fixed to the base (10) with the vibration isolating rubber (7) interposed therebetween.

On the upper surface of the support (5), the first compressor body (4
a) and the second compressor body (4b) are fixed. At the lower part of the first compressor body (4a) and the second compressor body (4b), a fixture (8) having a bolt hole is provided. The bolt (9) is fastened through this bolt hole, and the first compressor body (4
a) and the second compressor body (4b) are firmly fixed to the support (5). As a result, the first compressor main body (4a), the second compressor main body (4b), and the support base (10) are integrated to form a single compression structure (41). In other words, the first compressor main body (4a), the second compressor main body (4b), and the support base (10) form a single vibrating body that vibrates integrally.

The first compressor body (4a) and the second compressor body (4a)
b) is a so-called vertical scroll compressor of the same type. These compressor bodies (4a) and (4b) are configured by providing an electric motor, a drive shaft, a movable scroll, a fixed scroll, and the like (not shown) in cylindrical compressor casings (12a) and (12b). .

An accumulator (14) connected to a refrigerant circuit (not shown) is provided in front (upper in FIG. 2) of the first compressor body (4a) and the second compressor body (4b) juxtaposed. I have. The accumulator (14) is formed of a hollow cylindrical body, and is fixed to the base (10).

The outlet pipe (15) of the accumulator (14) is branched into suction pipes (15a) and (15b), and the suction pipes of the first compressor body (4a) and the second compressor body (4b) respectively. Mouth (13a), (13b)
It is connected to the. Compressor body (4a), (4b) inlet (13
a) and (13b) are provided on lower side surfaces of the compressor casings (12a) and (12b).

The inlet (13) of the compressor casings (12a) and (12b)
Discharge ports (16a) and (16b) are formed in the upper portions of (a) and (13b). From each discharge port (16a), (16b), each discharge pipe (17a),
(17b) extends, and the discharge pipes (17a) and (17b) merge to form one discharge pipe (17). The discharge pipe (17) is connected to a refrigerant circuit (not shown), and the refrigerant compressed by the compressor bodies (4a) and (4b) is supplied to the refrigerant circuit via the discharge pipe (17).

An oil leveling pipe (18) is further provided on the lower side surface of the compressor casings (12a) and (12b). Equalizing pipe (1
A capillary tube (19) is provided in the middle of (8), so that the oil level in the first compressor main body (4a) is equal to the oil level in the second compressor main body (4b).

As described above, the first compressor body (4a) and the second
Since the compressor body (4b) and the support base (5) are fixed and integrated, the refrigerant pipes (P) near the compressor bodies (4a) and (4b), that is, the suction pipe (15a) , (15b), discharge pipe (17a),
(17b) and the oil equalizing pipe (18) are also integrated with the first compressor main body (4a), the second compressor main body (4b) and the support base (5).

As described above, in the compressor (4) according to the present embodiment, the first compressor body (4a) and the second compressor body (4b) are fixed to the support base (5). It forms a single compression structure (41) fixed to one another. Therefore, the compressor (4)
In the operation of the first compressor body (4a) and the second compressor body (4b), instead of vibrating independently of each other,
Vibrates integrally as a whole structure. In addition, refrigerant pipes (15a), (15b), (17) connecting these compressor bodies (4a), (4b)
a), (17b) and (18) also vibrate integrally with the compressor bodies (4a) and (4b).

Therefore, the refrigerant pipes (15a), (15b), (17a), (17) are vibrated individually by the compressor bodies (4a), (4b).
b), (18) can be suppressed from generating excessive stress, and the possibility of damage to the refrigerant pipes (15a), (15b), (17a), (17b), (18) is significantly reduced. . For example, in FIG. 1, when the first compressor main body (4a) is displaced to the left, the second compressor main body (4b) is similarly displaced to the left. Therefore, each compressor body
(4a), refrigerant pipes for (4b) (15a), (15b), (17a), (17b),
Since the relative positional relationship of (18) is almost the same as before the displacement, excessive tensile or compressive force is applied to the refrigerant pipes (15a), (15b), (17a), (17b), and (18). It does not work and the risk of breakage is extremely small.

Further, since the support base (5) is fixed to the base (10) via the vibration isolating rubber (7), the vibration of the entire structure (41) is suppressed. As a result, refrigerant pipes (15a), (15b), (1
Vibrations of 7a), (17b) and (18) are also suppressed, and the risk of breakage is further reduced.

Therefore, when designing the outdoor unit (1), the burden on the vibration isolation design of the refrigerant pipes (15a), (15b), (17a), (17b), and (18) is reduced, so that the piping design is simplified. become. Also,
The reliability of the outdoor unit (1) is improved.

[0035]

Second Embodiment As shown in FIGS. 3 and 4, a compressor (24) of a second embodiment comprises a casing (12a) of a first compressor body (4a) and a second compressor body (4b). ) And the casing (12b), the two compressor bodies (4a) and (4b) are integrated to form a single compression structure (41).

As in the first embodiment, the first compressor main body (4a) and the second compressor main body (4b) are composed of the same type of vertical scroll compressor.

The casing (12) of each compressor body (4a), (4b)
(a), (12b) are provided with suction ports (13a), (13b) on the lower side, and the pipes branched from the outlet pipe (15) of the accumulator (14) become the suction pipes (15a), (15b). , These inlets (13a), (13b)
It is connected to the.

Discharge pipes (17a) and (17b) are connected to discharge ports (16a) and (16b) provided on upper side surfaces of the casings (12a) and (12b). The discharge pipes (17a) and (17b) merge to form a discharge pipe (17), which is connected to a refrigerant circuit (not shown).

An oil equalizing pipe (18) provided with a capillary tube (19) is connected to the lower side surface of the casings (12a) and (12b), and is provided in each of the compressor bodies (4a) and (4b). The oil level is configured to be equal.

The casing (12) of each compressor body (4a), (4b)
At the lower part of (a), (12b), a fixture (8) with bolt holes
Is provided. The fixing (8) is fastened with bolts (9),
Fixed to the base (10). Bolt similar to Embodiment 1
(9) is provided so as to penetrate the vibration isolating rubber (7) having a through hole. Therefore, the first compressor body joined and integrated.
(4a) and the second compressor body (4b) are fixed to the base (10) via the vibration isolating rubber (7).

The other structure of the outdoor unit (21) of the second embodiment is the same as that of the outdoor unit (1) of the first embodiment, and the description is omitted.

With the above configuration, also in the compressor (24) of the second embodiment, the first compressor main body (4a) and the second compressor main body (4b) are integrated into a single compression structure. It forms the body (41).

Therefore, during operation of the compressor (24), the first compressor main body (4a) and the second compressor main body (4b) vibrate integrally, not independently of each other. The refrigerant pipes (15a), (15b), (17a), (17b), and (18) are also connected to the compressor body (4
Vibrates integrally with a) and (4b). Therefore, similarly to the first embodiment, the risk of damage to the refrigerant pipes (15a), (15b), (17a), (17b), and (18) is significantly reduced.

Further, since the structure (41) is fixed to the base (10) via the vibration isolating rubber (7), its vibration is suppressed. As a result, the refrigerant pipes (15a), (15b), (17a), (17b),
The vibration of (18) is also suppressed, and the risk of breakage is further reduced.

Therefore, the piping design of the outdoor unit (21) is facilitated, and the reliability of the outdoor unit (21) is improved.

-Other Embodiments- In the first and second embodiments, the two compressor bodies (4a) and (4b)
Were arranged side by side, but the compressor of the present invention is not limited to the twin compressor, and may be a compressor having three or more compressor bodies. Also,
It is not limited to the compressor of the air conditioner.

The compressor body is not limited to a vertically mounted scroll compressor, but may be a horizontally mounted scroll compressor. Further, a compressor of another form such as a rotary compressor may be used.

The method of fixing each of the compressor bodies (4a) and (4b) depends on the form using the support (5) and the direct method as long as they can be firmly fixed so as to form a single vibrator. It is not limited to the form of joining, but may be another method.

[0049]

As described above, according to the present invention, the following effects are exhibited.

According to the first aspect of the present invention, since each compressor body is integrated to form a single compression structure,
During operation of the compressor, the compressor body does not vibrate individually, but the entire compression structure vibrates integrally. Therefore, the pipe connecting the compressor main bodies vibrates integrally with each compressor main body, so that the stress applied to the pipe due to the vibration is reduced. Further, since the compression structure is fixed to the base via the cushioning material, vibration of the entire structure is suppressed. Therefore, damage to the piping is unlikely to occur. For this reason, the burden of vibration countermeasures during design is reduced, and piping design is facilitated. Further, the reliability of the air conditioner is improved.

According to the second aspect of the present invention, since a single compression structure is formed by fixing each compressor body to the common support, a single compression structure can be easily formed. can do.

According to the third aspect of the present invention, since the compressor bodies are fixed by joining the casings of the compressor bodies to each other, the fixing is firm, and the single compression structure Can be reliably formed.

According to the fourth aspect of the present invention, in a so-called twin compressor, it is possible to realize a compressor with less piping vibration and less risk of breakage.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of an outdoor unit.

FIG. 2 is a cross-sectional view of the outdoor unit.

FIG. 3 is a vertical sectional view of the outdoor unit.

FIG. 4 is a cross-sectional view of the outdoor unit.

FIG. 5 is a cross-sectional view of a conventional outdoor unit.

[Description of Signs] (1) Outdoor unit (2) Heat exchanger (3) Blower (4) Compressor (4a) First compressor body (4b) Second compressor body (5) Support base (6) Bolt (7) Anti-vibration rubber (8) Fixture (9) Bolt (10) Base (12a), (12b) Compressor casing (13a), (13b) Suction port (14) Accumulator (15a), (15b) Suction Pipe (16a), (16b) Discharge port (17a), (17b) Discharge pipe (18) Oil leveling pipe (19) Capillary tube (41) Compression structure

Claims (4)

[Claims] 1. A plurality of compressor bodies (4a, 4b,...) Are piped.
(15a, 15b, 17a, 17b, 18), the compressor bodies (4a, 4b, ...) are fixed to each other to form a single compression structure (41), A compressor, wherein the compression structure (41) is fixed to a base (10) via a cushioning material (7). 2. The compressor according to claim 1, wherein each of the compressor bodies (4a, 4b,...) Is fixed to a common support base (5), and each of the compressor bodies (4a, 4b,. ...) and the support (5) form a single compression structure (41), and the support (5) is fixed to the base (10) via a cushioning material (7). A compressor characterized by the above-mentioned. 3. The compressor according to claim 1, wherein a casing (12a, 12b,...) Of each compressor body (4a, 4b,...).
・ ・) The compressor characterized by being joined and fixed. 4. The compressor according to claim 1, wherein each of the compressor bodies (4a, 4b,...) Is provided in the air conditioner unit (1) and circulates a first compressor body. (12
a) and a second compressor body (12b).