JPH0544963A - Air-conditioner - Google Patents

Abstract

PURPOSE:To relax concentration of the stress of a piping system generated owing to vibration of a compressor. CONSTITUTION:A rigid vibration member is disposed in the rotation direction of a mounting leg 2a of a compressor 2 and a compressor body is inhibited from rotation, or the compressor 2 is fixed to a frame 8. The frame 8 is fixed on an underframe 1 through a vibration insulating member in a position displaced from a position where the compressor 2 is fixed to the frame 8.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner, and more particularly to a structure for mounting a compressor, which constitutes a part of a refrigeration cycle, on an underframe.

[0002]

13 to 16 are perspective views showing a mounting state of a compressor or the like in a machine room of a conventional air conditioner disclosed in Japanese Utility Model Publication No. 53-43005, for example. In the case of one system, FIG. 15 shows a case where the refrigerating cycle has two systems, FIG. 14 is a perspective view showing the mounting state of the compressor 2 in FIG. 13 and FIG. In the figure, 1 is a base frame having a mounting frame 1a, 2 is a compressor fixed on the mounting frame 1a with bolts and nuts, and 4 is a vibration proof inserted between the compressor 2 and the mounting frame 1a. Rubber, 5 is an accumulator, 6 is a discharge side pipe for guiding the refrigerant discharged from the compressor 2 to a heat exchanger for condensation (not shown) as indicated by an arrow in the figure, and 7 is a heat exchanger for evaporation (not shown). It is a suction side pipe for guiding the refrigerant from (1) to the compressor 2 through the accumulator 5, and the refrigeration cycle constituted by these is one system in the case of FIG. 12 and two systems on the underframe 1 in the case of FIG. It is placed in.

In the conventional air conditioner configured as described above, the exciting force when the compressor 2 is started, operated and stopped is from the discharge side pipe 6, the suction side pipe 7 and the foot of the compressor 2 to peripheral equipment. And spread to underframe 1. The anti-vibration rubber 4 is provided to absorb the force due to this vibration in the fixed portion of the compressor 2 so as not to transmit the force to the piping portion as much as possible. The burden on the pipes 6 and 7 has increased, and as a result, both pipes 6 and 7
In many cases, stress concentration occurs in the bent portion of the and the effect of the anti-vibration rubber 4 is also killed. For example, in the case of the suction side pipe 7 that connects the accumulator 4 and the compressor 2, the accumulator 4 is fixed to the underframe 1 and is attached to the compressor 2 that is movably mounted in multiple directions via the antivibration rubber 4. Since it is interposed between the pipes, the stress concentration is large, and pipe cracks and the like occur beyond the allowable cyclic stress range of the pipe.

[0004]

In the conventional air conditioner, since the mounting portion of the compressor 2 is constructed as described above,
As described above, stress concentration easily occurs in the piping system, and in order to keep it within the allowable stress value range of the piping, many traps are provided in the piping, the piping is fixed to other equipment, the piping is fixed to each other, etc. It is necessary to take measures to increase the number of parts and the assembling work time, and as a result, it is difficult to secure the quality, and the cost is increased.

The present invention has been made in order to solve the above problems, and provides an air conditioner for reducing the cost by alleviating the stress concentration generated in the piping system due to the vibration of the compressor. The purpose is that.

[0006]

In the air conditioner according to the present invention, two compressors are fixed on the same pedestal, and the pedestals are placed at positions where the compressors are fixed on the pedestal and at positions displaced from each other. It is fixed on the frame via a vibration isolator,
Further, a step is provided on the surface of the gantry at a position where the compressor is fixed on the gantry and a position where the gantry is fixed on the underframe.
Further, the compressor is attached to the mounting frame in the underframe via a vibration-proof rubber, and a braking member for suppressing rotation of the compressor at the time of starting or during operation is provided.

[0007]

In the frame of the air conditioner according to the present invention, by mounting and integrating the compressor, the mass of the excitation system of the compressor is increased and the excitation force of the compressor itself is reduced.
By displacing the fixed position of the compressor and the fixed position on the underframe, the transmission distance of vibration is extended and the vibration is attenuated.
The stress concentration on the piping system is reduced, and the mechanical strength is improved by providing a step on the surface of the frame at the position where the compressor is fixed and the position where it is fixed on the underframe. Furthermore, the turning force generated at the time of starting the compressor is absorbed by the braking member, and as a result, the vibration of the compressor itself is damped and stress concentration in the piping system is eliminated.

[0008]

【Example】

Example 1. An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing a mounting state of a compressor in a machine room of an air conditioner according to an embodiment of the present invention, and FIG. 2 shows details of a fixing portion between a compressor and a gantry and a fixing portion between a gantry and an underframe. It is a schematic diagram which shows. In these figures, the same reference numerals as those in FIGS. 13 to 16 indicate the corresponding parts, and the description thereof will be omitted.
Reference numeral 8 denotes a pedestal having a recess 8a in which the compressor 2 is disposed and a step formed on the upper surface. The pedestal 8 is supported by a mounting frame 1a of the underframe 1 with a vibration-proof rubber 11 interposed therebetween, and a bolt. And nut 12
It is fixed to the mounting frame 1a. The compressor 2 is installed in the recess 8a of the pedestal 8 via the metal spacer 9 with bolts and nuts 10.

In the vibration isolating mounting structure of the compressor configured as described above, the metal plate frame 8 on which the compressor 2 is installed is the compressor 2
Since the structure is integrated with, the mass of the entire compressor is increased, and the effect of enhancing the vibration damping effect is obtained. Therefore, the vibration accompanying the driving of the compressor 2 is suppressed, and the stress concentration on the piping system can be reduced.

Further, since the mounting portion of the frame 8 to the mounting frame 1a corresponds to the mounting foot 2a of the compressor 2, the larger the mounting interval is, the weaker the rotational force (excitation force) of the compressor itself is. Therefore, by using the pedestal 8, the excitation force in the front-rear, left-right, and rotational directions at the time of starting, operating, and stopping the compressor 2 can be reduced, and the stress concentration on the piping system can be weakened.

Embodiment 2. In the above embodiment, the compressor 2
An example in which the bolt was fixed directly to the pedestal 8 with bolts and nuts 10 was shown, but as shown in FIG.
By laying 13 and installing the compressor 2 on this, the vibration of the compressor 2 is further absorbed, and as a result, the operating noise emitted by the compressor 2 and the noise caused by contact with the pedestal 8 and thus the operating noise of the entire device. Can be reduced. Further, instead of laying the damping sheet 13 on the pedestal 8, the pedestal 8 itself may be made of a damping steel plate.

Embodiment 3. FIG. 4 is a perspective view showing a mounting state of a compressor in a machine room of an air conditioner according to another embodiment of the present invention, and FIG. 5 is a detailed view of a fixing portion between the compressor and the gantry and a fixing portion between the gantry and the underframe. It is a schematic diagram which shows. In these figures, the same reference numerals as those in FIGS. 13 to 16 indicate the corresponding parts, and the description thereof will be omitted. 8 is a plurality of concave portions 8a and convex portions
8b and a stepped surface formed on the upper surface thereof, and the compressor 2 is fixedly supported in each recess 8a by a bolt and nut 10 via a metal spacer 9. 11 is the convex portion 8b of the gantry 8
And a mounting frame 1a of the underframe 1 is a vibration damping rubber as a vibration damping member, and the convex portion 8b and the mounting frame 1a are the vibration damping rubber.
It is fixed by bolts and nuts 12 via 11.

In the compressor mounting structure of the air conditioner according to the embodiment of the present invention constructed as described above,
Although the compressor 2 is attached to the mounting frame 1a of the underframe 1 via the anti-vibration rubber 11, it is the same as the conventional one, but the two compressors 2 are fixed to the gantry 8 having a constant mass and rigidity. By integrating them, the overall mass of the excitation system of the compressor 2 is increased and the acceleration is reduced to enhance the vibration damping effect of the excitation system of the compressor 2, and the convex portion 8b of the pedestal 8 is attached to the underframe 1. Since the portion to be mounted on the mounting frame 1a corresponds to the mounting foot portion of the conventional compressor 2, the mounting interval becomes larger than that of the conventional compressor, so that the rotational force of the compressor 2 itself ( (Exciting force) is weakened, and the fixed position of the pedestal 8 on the compressor 2 and the fixed position on the underframe 1 are displaced,
Since the vibration transmission distance is extended to reduce the vibration, the exciting force at the time of starting, operating and stopping the compressor 2 is significantly reduced, and the stress concentration on the piping system connected to the compressor 2 is relaxed. can do. Further, the pedestal 8 has a concave portion 8a and a convex portion 8b, and since the compressor 2 is fixed by the concave portion 8a and is fixed to the mounting frame 1a of the underframe 1 by the convex portion 8b,
The mechanical strength and vibration are strong, and the mounting height of the compressor 2 can be reduced, resulting in compactness.

Example 4. In the third embodiment, the compressor 2 is directly fixed to the pedestal 8 via the metal spacer 9. However, as shown in FIG. 6, the vibration damping sheet 13 is laid in the recess 8a and If the compressor 2 is attached to the, the vibration during the operation of the compressor 2 can be further absorbed, and the operation noise generated by the compressor 2 and the noise generated by the contact with the pedestal 8 can be reduced, and by extension, the device. It can also be used to reduce the overall driving noise. Further, instead of using the vibration damping sheet 13, the same effect can be obtained by forming the pedestal 8 itself with a vibration damping steel plate in which a vibration damping sheet and a steel plate are sandwiched.

Example 5. FIG. 7 is a perspective view showing a mounting state of a compressor in a machine room of an air conditioner according to another embodiment of the present invention. In the figure, the same reference numerals as those in FIGS. Is omitted. 13 is mounting foot 2a
A compressor damping member that suppresses the rotation of the compressor body 2b at the time of starting the compressor 2 including the compressor body 2b having a compressor and a compression means (not shown) housed in the compressor body 2b (hereinafter , Which is abbreviated as a vibration damping member), and is made of a hard metal or resin material. FIG. 8 is a perspective view showing a detailed structure of the vibration damping member 13, where 14 is a vibration damping sheet adhered to the lower surface of the vibration damping member 13 and 13a is a through hole formed in the upper surface of the vibration damping member 13. , 13b are formed on the side surface of the vibration damping member 13, and are pressure receiving surfaces of the rotational force propagating from the mounting foot 2a provided on the compressor body 2b of the compressor 2, and are formed in a shape along the mounting foot 2a. The pressure receiving surface 13b is attached to the mounting frame 1a via the damping sheet 14 by the fixing screw 15 inserted into the through hole 13a so that the pressure receiving surface 13b comes into close contact with the mounting foot 2a. FIG. 9 is a plan view showing this mounting state, and in the figure, the arrow indicates the direction of rotation of the compressor body 2b when the compressor 2 is started.

Next, the operation will be described. When the compressor body 2b rotates in the direction of the arrow shown in FIG. 9 when the compressor 2 is started, this rotational force propagates to the pressure receiving surface 13b of the damping member 13 through the mounting foot 2a, and this rotational force is transmitted to the damping member 13. It is absorbed by itself, the compressor body 2b is prevented from rotating, and the vibration of the compressor 2 is greatly reduced compared to the case where only the anti-vibration rubber 4 is used as in the conventional example, and the stress concentration on the piping system is concentrated. Becomes smaller.

Hereinafter, the vibration damping effect in the rotating direction of the compressor 2 by the mounting structure of the compressor 2 shown in FIGS. 7 to 9 will be compared with the case where only the vibration damping rubber 4 as in the conventional example is used. Explain. Modeling the vibrations in both rotation directions can be considered as shown in FIGS. 10 to 12. FIG. 10 shows a rotation direction vibration model of a conventional example, and 16 is a mass, which corresponds to the compressor 2. Reference numeral 17 is a vibration-proof spring, which corresponds to the vibration-proof rubber 4. Reference numeral 18 denotes a vibration receiving surface, which corresponds to the underframe 1 and the pipes 6 and 7. FIG. 11 shows a rotation direction vibration model when only the damping member 13 according to the present invention is used, and 19 is damping, which corresponds to the damping member 13.
FIG. 12 shows a rotation direction vibration model when the vibration damping sheet 14 is interposed between the vibration damping member 13 and the mounting frame 1a. Reference numeral 20 denotes a damping spring system, which is shown in FIG. It corresponds to the vibration damping member 13. The anti-vibration rubber 4 insulates the vibration of the compressor 2 itself from the underframe 1 and is effective in preventing the vibration from propagating to the unit, but the compressor rotational force that causes a large pipe stress is
The anti-vibration rubber 4 alone has almost no damping effect in the rotational direction and free vibration as in the model shown in FIG. 10 is achieved, so that the propagation of force in the rotational direction is not suppressed. Therefore, by providing the vibration damping member 13 in the rotation direction, the vibration model in the rotation direction becomes as shown in FIG. 11, and since the vibration damping member 13 acts as the damping 19, the damping ratio in the rotation direction increases and the vibration propagation is prevented. Can be deterred. However, the damping member 13 acts as a damping against the compressor 2, but due to the structure, it must be considered to prevent transmission to the underframe 1 when a rotational force from the compressor 2 is received.
A model of FIG. 12 in which vibration isolation is performed by attaching the damping sheet 14 to the bottom surface of the damping member 13 is conceivable, and as a result, the damping effect is slightly reduced.

Example 6. In the fifth embodiment described above, the compressor foot is attached so that the pressure receiving surface of the vibration damping member is in close contact with the mounting foot, but the invention is not limited to this, and a vibration damping sheet may be interposed between the two.

[0019]

As described above, according to the present invention, a hard braking member is arranged in the rotation direction of the mounting foot of the compressor to prevent the compressor body from rotating, and the compressor is fixed on the frame. In addition, since this frame is configured to be fixed on the underframe via a vibration isolator at the position where the compressor is fixed on the frame and the position where it is displaced, the concentrated stress generated in the piping system is mitigated, Since there is no need to take measures such as fixing the parts, the number of parts is reduced, the structure is simplified, the cost is reduced, and the reliability is improved.

[Brief description of drawings]

FIG. 1 is a perspective view showing a mounted state of a compressor in a machine room of an air conditioner according to an embodiment of the present invention.

FIG. 2 is a schematic diagram showing details of a fixed portion of a compressor and a gantry and a fixed portion of a gantry and an underframe in FIG.

FIG. 3 is a perspective view showing a configuration of a frame of an air conditioner according to another embodiment of the present invention.

FIG. 4 is a perspective view showing a mounted state of a compressor in a machine room of an air conditioner according to another embodiment of the present invention.

FIG. 5 is a schematic diagram showing details of a fixed portion of the compressor and the gantry and a fixed portion of the gantry and the underframe in FIG.

FIG. 6 is a perspective view showing a configuration of a frame of an air conditioner according to another embodiment of the present invention.

FIG. 7 is a perspective view showing a mounted state of a compressor in a machine room of an air conditioner according to another embodiment of the present invention.

8 is a perspective view showing a detailed structure of the compressor vibration damping member shown in FIG. 7. FIG.

FIG. 9 is a plan view of a mounted state of a compressor in a machine room of the air conditioner shown in FIG. 7.

FIG. 10 is a diagram showing a rotational direction vibration model of a compressor body in a conventional air conditioner.

11 is a diagram showing a rotational direction vibration model of the compressor body by the vibration damping member shown in FIG.

FIG. 12 is a diagram showing a rotational direction vibration model of the compressor body in the air conditioner of the present invention.

FIG. 13 is a perspective view showing a mounting state of a compressor and the like in a machine room of a conventional air conditioner.

14 is a perspective view showing details of a mounted state of the compressor in FIG.

FIG. 15 is a perspective view showing a mounting state of a compressor and the like in a machine room of a conventional air conditioner.

16 is a perspective view showing details of a mounted state of the compressor in FIG.

[Explanation of symbols]

 1 stand frame 2 compressor 4 anti-vibration rubber 8 frame 13 compressor damping member

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shunsuke Ohara 6-5-6 Tehira, Wakayama City, Wakayama Sanryo Electric Co., Ltd. Wakayama Works (72) Inventor Yasufumi Hatamura 6-5 Tedaira, Wakayama City, Wakayama Prefecture No. 66 Sanritsu Electric Co., Ltd. Wakayama Works (72) Inventor Kenzo Kurahashi 6-5-6 Tehira, Wakayama City, Wakayama Prefecture Sanryo Electric Co., Ltd. Wakayama Works (72) Inventor Katsumi Kasano Wakayama City, Wakayama Prefecture Flat 6-5-6 Sanritsu Electric Co., Ltd. Wakayama Works

Claims (4)

[Claims] 1. An air conditioner having a refrigerating cycle and comprising a compressor constituting a part of the refrigerating cycle on an underframe of a machine room, wherein the compressor is fixed on a mount and An air conditioner characterized in that a frame is fixed on the underframe via a vibration isolating member at a position displaced from a position where the compressor is fixed to the frame. 2. An air conditioner having two refrigerating cycle systems and two compressors respectively constituting a part of both refrigerating cycles arranged on an underframe of a machine room. An air conditioner fixed on the same frame and fixed on the underframe via a vibration isolating member at a position displaced from a position where the compressor is fixed on the frame. 3. The air conditioner according to claim 2, wherein a step is provided on a surface of the gantry at a position where the compressor is fixed on the gantry and a position where the gantry is fixed on the underframe. 4. An air conditioner having a refrigerating cycle and comprising a compressor forming a part of the refrigerating cycle on an underframe of a machine room, wherein the compressor is mounted on the platform via mounting feet. An air conditioner provided with a compressor damping member that is fixed on a frame and that engages with the mounting foot to prevent rotation of the mounting foot.