KR20120061240A - Low-vibration structure for refrigeration system compressor - Google Patents

Abstract

PURPOSE: A vibration reduction structure of a compressor for an air conditioning device is provided to minimize the length of coolant pipes and extend the lifetime of coolant pipes through reducing fatigue load transferred to coolant pipes. CONSTITUTION: A vibration reduction structure of a compressor for an air conditioning device is installed in the inner side of an air conditioning device and a compressor. A fastening unit for fixing the bottom of the case of a compressor to the ground is installed in the bottom of the case. A vibration damper is inserted in a bolt for fixing a mounting member(110) and the bottom of a case. A first vibration damper(120) absorbing small amplitude vibration is installed in the mounting member and a second vibration damper(130) absorbing bug amplitude vibration is installed the outer circumference of the first vibration damper.

Description

LOW-VIBRATION STRUCTURE FOR REFRIGERATION SYSTEM COMPRESSOR}

The present invention relates to a vibration reduction structure of a compressor used in a refrigeration air conditioning apparatus for controlling the temperature of air, and more particularly, vibration generated in the compressor during the refrigerant compression process using a vibration damping material capable of absorbing vibration such as rubber. It relates to a vibration reduction structure of the compressor for reducing and blocking the transmission to the pipe.

In general, a refrigeration air conditioner is a device for maintaining a constant temperature of the room by forcibly suctioning the air in the room to perform the action of cooling, dehumidification, etc., and discharge it back to the room.

1 is an exploded view illustrating main parts of an outdoor unit of a refrigeration air conditioner according to the prior art, and FIG. 2 is a main view of a structure of a compressor fixing part and a refrigerant pipe of the refrigeration air conditioner according to the prior art. .

In general, a separate refrigeration air conditioner includes an indoor unit and an outdoor unit, and the indoor unit and the outdoor unit are connected to each other by a refrigerant pipe, and the outdoor unit includes a compressor (5) for compressing the refrigerant at a high temperature and a high pressure, and from the compressor (5). And a condenser (3) for exchanging the supplied refrigerant with outdoor air, and an expansion valve for expanding the exchanged refrigerant into a low temperature and low pressure refrigerant, and the indoor unit includes the refrigerant supplied from the expansion valve. And an evaporator to heat exchange with.

In more detail, the outdoor unit of the refrigeration air conditioner is a compressor inside the case 1 in which the inlet port 2 and the outlet port 4, through which the outdoor air is sucked and discharged, are formed, as shown in FIG. 5 and a condenser 3 are installed, and the compressor 5 is installed to be connected to each other by an evaporator (not shown) on the indoor unit side and a refrigerant pipe 7 shown in FIG. At this time, since the compressor 5 is located inside the case 1, the refrigerant pipe 7 of metal material connected to the evaporator is installed to pass through the case 1.

When the refrigeration air conditioner of such a structure is operated, the vibration generated during the compression operation in the compressor (5) is transmitted to the case (1) through the coupling portion 6 combined with the compressor (5) and the vibration noise This will occur. Accordingly, in order to prevent the vibration generated from the compressor 5 from being transmitted to the case 1, the compressor 5 is connected to the case 6 by the coupling part 6 including a vibration damping material such as dustproof rubber. Installed in 1). In this case, since the vibration of the compressor 5 cannot be completely prevented at the junction with the case 1, the vibration generated in the compressor 5 is directly transmitted to the refrigerant pipe 7 to generate structural vibration. do. The structural vibration generated in this way acts as a cause of the fatigue crack generated in the refrigerant pipe (7) causes a failure of the product. In order to prevent this, various types of loops have been formed in the refrigerant pipe 7 connected to the compressor 5, that is, the refrigerant pipe 7 located inside the case 1 to distribute the fatigue load. .

As such, the outdoor unit of the refrigerating and air conditioning apparatus according to the prior art forms various types of loops of the refrigerant pipe 7 so as to prevent vibration of the compressor 5 from being transmitted to the refrigerant pipe 7. 7) will be longer. The longer the length of the refrigerant pipe 7 is, the greater the effect of fatigue load dispersion is, but the material cost is higher, and the space for forming a loop of the refrigerant pipe 7 inside the case 1 is limited. There is a limit to preventing the vibration of the transfer to the refrigerant pipe (7).

The present invention is to solve the conventional problems as described above, when the compressor (5) installed inside the case (1) is operated, the refrigeration air conditioner that can reduce the vibration transmitted to the refrigerant pipe (7) The purpose is to provide a compressor vibration reduction structure.

For reference, Figure 3 shows an example of the vibration of the compressor during the start / stop and operation of the refrigeration air conditioner, Figure 4 shows an example of the life line of the refrigerant pipe to the working stress.

The compressor used in the refrigeration air conditioner vibrates with a large amplitude during start / stop due to the characteristics of the device, thereby giving a great stress to the refrigerant pipe (7). In addition, during operation, vibrations with a small amplitude cause a lower stress on the refrigerant pipe 7 than during start / stop. In general, the stress-life plots have a straight line that falls in the lower right corner of the graph in which the stress is plotted on the Y-axis and the log scale is plotted on the X-axis. If the stress acting on the pipe during start / stop is three times the stress acting on the pipe during operation, as shown in FIG. 3 (b), each fatigue life is represented by 20,000 cycles and 50 million cycles as shown in FIG. This means that the service life will be 2500 times longer during operation.

Therefore, the damage received by the pipe during operation is negligible as compared with the starting time. In this case, even if the stress at start-up is reduced to only 2/3 level by using the vibration reducing device, it can be seen that the lifespan due to vibration at start-up is increased 15 times to 300,000 cycles. In other words, limiting the stress at start / stop will significantly increase the life of the refrigerant piping. It is also known that greater vibrations occur during transportation of refrigeration and air conditioning equipment to significantly reduce the service life of the piping. Even in this case, limiting vibration can significantly increase fatigue life.

The main configuration of the present invention for achieving the above-described vibration reduction purpose of the present invention, in the refrigeration air conditioner to control the air temperature by using the evaporative heat by compressing and evaporating the refrigerant, is installed inside the refrigeration air conditioner, the refrigerant piping It is connected to the compressor is installed in the compressor to compress the refrigerant, the lower part of the compressor has a coupling for fixing the case bottom surface, the mounting portion and the bolt for fixing the case bottom surface to absorb the vibration generated by the compressor In the vibration reduction structure of the compressor for a refrigeration air-conditioning apparatus having a structure in which a vibration damping material is inserted, the first vibration damping member 120 having a corrugated shape is fastened by the fastening means 100 perpendicular to the mounting part 110. In addition, a secondary vibration damping member 130 surrounding the primary vibration damping member 120 is installed on the outer circumference of the primary vibration damping member 120, and the vibration of the small amplitude during operation is reduced to the primary vibration damping material. And the vibration of the large amplitude during start / stop is characterized in that the structure is absorbed by the secondary vibration damper 130, the secondary vibration damper 130 is perpendicular to the bottom surface of the case 140 It is made of a cylindrical tube shape erected, characterized in that the mounting portion 110 is installed at intervals on the outer circumferential bottom, and the vibration limiting knife 150 is further installed on the mounting portion 110, the vibration The limiting knife 150 is installed at intervals on the upper surface of the primary vibration damping material 120, and is characterized in that the structure is fastened to the fastening means 100 integrally through the fastening means 100, 2 The vehicle vibration isolator 130 is made of a "b" shape and the bottom surface is in contact with the case 140, the upper surface is formed with a bolt hole 11, the insertion hole 12 is formed in the middle of the vertical body, mounting portion 110 is installed through the insertion hole 12, the bolt hole 11 on the upper surface The fastening means 100 is characterized in that the structure is fastened, the outer peripheral end of the mounting portion 110 to form a frame 200 of the bent shape to form any one surface of the frame 200 or case 140 It characterized in that the attachment to the vibration damping material 210, 211 is spaced apart, the vibration damping material 211 is integrally attached so as to descend vertically from the outer peripheral end of the mounting 110 of the frame 200. And a lower end portion of the adhesion damping material 211 is spaced apart from the bottom of the case 140, and the adhesion damping material 211 is vertically attached from the case 140, and the adhesive The upper end of the truth 211 is characterized in that the mounting portion 110 and spaced apart.

Other features and configurations other than those described above will be further described below.

According to the vibration reduction structure of the compressor for a refrigeration air conditioner according to the present invention, since the compressor connected to the refrigerant pipe for moving the refrigerant to the indoor unit to absorb the vibration of the large amplitude, such as start / stop to the secondary vibration damper By reducing the fatigue load transmitted, the life of the refrigerant pipe can be increased, as well as the length of the refrigerant pipe can be minimized, thereby reducing the material cost.

1 is a partial exploded view of the main portion of the outdoor unit of the refrigeration air conditioner according to the prior art.
2 is a structural diagram of a compressor and a refrigerant pipe of a refrigeration air conditioner according to the prior art.
3 (a) and 3 (b) show vibrations of the compressor during start / stop and operation of the refrigeration air conditioner.
Figure 4 shows the life curve of the refrigerant pipe to the working stress.
5 (a) to 5 (d) are embodiments of the present invention
Figure 6 (a) to 6 (e) is another embodiment of the present invention
Figure 7 (a) to 7 (c) is another embodiment of the present invention

The present invention provides a compressor comprising a discharge port for discharging a refrigerant compressed to high temperature and high pressure to the outside of a compressor, and a refrigerant pipe (7) and a discharge valve for moving the refrigerant from the discharge port to the discharge pipe. And a vibration damper installed at a coupling point of the case to reduce transmission of vibration generated from the compressor to the case and the refrigerant pipe.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

5 (a) to 5 (d), 6 (a) to 6 (e) and 7 (a) to 7 (c) illustrate various embodiments of the vibration reduction structure of the compressor according to the present invention. .

First, the vibration reduction structure of the compressor according to the present invention, as shown in Figure 5 (a) and 5 (b), the mounting unit 110, the compressor connected to the compressor 5 shown in Figure 2 Fastening means 100, such as a bolt and a nut for fixing between 5 and the case (henceforth the case 140) comprised in the bottom surface, and the primary vibration damping material 120 for absorbing the vibration during operation. ), And a tube-shaped secondary vibration damper 130 or vibration limiting knives 150 and 160 for absorbing vibration at the start and stop.

Here, the compressor 5 is coupled to the mounting unit 110, the mounting unit 110 is fixed to the bottom surface of the case 140 by using fastening means 100, such as bolts and nuts, the inside The primary vibration damper 120 is installed through the bolt 10, the tubular secondary vibration damper 130 is installed to the outer periphery.

Thus, when a large vibration is generated by starting / stopping as shown in FIG. 5 (b), when the mounting part 10 is rocked, the primary vibration damper 120 is primarily held and the larger swing and vibration are secondary. As a secondary vibration damper 130 to hold.

5 (c) is further provided with a vibration limiting knife 150, it is formed in a cover shape in the lower portion of the washer 151, the lower protrusion 152 is formed in a shape bent downward.

According to such a structure, the vibration suppressing and limiting effect is higher than the above structure.

FIG. 5D shows another shape in which the washer 151 shown in FIG. 5C is removed. In this structure, since the excessive vibration control effect by the washer 151 is alleviated to some extent, there is an effect of preventing excessively concentrated concentration from occurring in the fastening means 100.

On the other hand, during operation of the device, less vibration occurs than during start / stop operation, so that the mounting unit 110 does not touch the secondary vibration damper 130 and the vibration limiting knife 150 but contacts only the primary vibration damper 120. Since the vibration is limited so that the vibration during operation is not transmitted to the bottom surface of the case 140, the noise during operation is maintained as in the prior art.

6 (a) to 6 (e) are still another embodiment of the present invention.

As shown in the vibration reduction structure of the compressor according to the present embodiment, the primary vibration damper 120 for absorbing vibration during operation, the frame 200 for transmitting vibration during start / stop, and start / stop It consists of an attachment type vibration damper 210 is a secondary vibration damping material for absorbing the vibration of the.

Here, the compressor 5 is coupled to the mounting unit 110, the mounting unit 110 is fixed to the bottom surface of the case 140 by using the fastening means 100 of the bolt and nut, the primary Vibration damper 120 is fitted to the bolt, the end of the mounting portion 110 forms a bent frame 200. Thus, when a large vibration occurs by the start / stop, as shown in Figure 6 (b), the lower end of the frame 200 is in contact with the vibration damping material 210 attached to the bottom surface of the case 140 to absorb the vibration. In addition, since the vibration damping material 210 and the frame 200 do not contact with each other during operation, only the primary vibration damping material 120 is used, and the vibration during operation is not transmitted to the bottom surface of the case 140. Remains the same.

At this time, by adjusting the material and thickness of the vibration damping material 210 and the interval between the frame 200 and the vibration damping material 210, the amount of vibration reduction can be adjusted by varying the degree of restraint of the amplitude.

In addition, instead of the structure of the frame 200 in which the bottom portion is bent, as shown in FIGS. 6 (d) and 6 (e), the adhesion damping material 211 is attached to the bottom of the frame 200 or the case 140. ) It can be attached vertically on the bottom. Thus, it is possible to absorb a large vibration at the start / stop.

7 (a), 7 (b) and 7 (c) are still other embodiments of the present invention.

In this embodiment of the vibration reduction structure of the compressor according to the present invention, the mounting unit 110 is connected to the compressor, the fastening means 100 for fixing the compressor and the case 140, for absorbing vibration during operation The primary vibration damper 120, the secondary vibration damper 130 is a vibration restraining device to restrain the vibration at the start stop.

As shown in FIG. 7 (c), the secondary vibration damper 130 is formed in a “a” shape, and a bolt hole 11 is formed at an upper portion thereof so that the bolt 10 is fastened and vertically formed. Insertion hole 12 is formed in the lower middle. Thus, the mounting portion 110 is inserted into the insertion hole 12 and the lower end is installed in contact with the bottom surface of the case 140. Thus, when a large vibration occurs in the mounting unit 110 as shown in Figure 7 (b), it serves to restrain this.

10: bolt 11: bolt hole
12: insertion hole 100: fastening means
110: mounting unit 120: primary vibration damper
130: secondary vibration damper 140: case
150: vibration limiting knife 151: washer
152: projection 200: frame
210: adhesion damping material 211: adhesion damping material

Claims (7)

In a refrigeration air conditioner that compresses and evaporates a refrigerant to control the air temperature by using evaporative heat, it is installed inside the refrigeration air conditioner, and is connected to a refrigerant pipe to be installed in a compressor for compressing the refrigerant. In the vibration reduction structure of the compressor for refrigeration air conditioning equipment having a coupling portion for fixing the surface and the vibration damping material absorbing the vibration generated by the compressor is inserted into the bolt for fixing the mounting portion and the case bottom. In
Vertically to the mounting portion 110, to fasten the first vibration damping member 120 of the corrugated shape with the fastening means 100,
On the outer circumference of the primary vibration damper 120 is installed a secondary vibration damper 130 surrounding the primary vibration damper 120,
The vibration of the small amplitude vibration during operation is absorbed by the primary vibration damper, and the vibration of the large amplitude during start / stop is absorbed by the secondary vibration damper 130, Vibration reduction structure. The method of claim 1,
The secondary vibration damper 130 is made of a cylindrical tube shape vertically erected on the bottom surface of the case 140, for the refrigeration air conditioning equipment, characterized in that installed at intervals on the outer peripheral bottom of the mounting portion 110 The vibration reduction structure of the compressor. The method of claim 2,
The vibration limiting knife 150 is further installed on the mounting part 110, but the vibration limiting knife 150 is installed at an interval on the upper surface of the primary vibration damping material 120, and the fastening means 100 is provided. Vibration reduction structure of the compressor for refrigeration and air conditioning equipment, characterized in that the structure is fastened through and integrally fastened with the fastening means (100). The method of claim 1,
The secondary vibration damper 130 is formed in a "b" shape and the bottom surface is in contact with the case 140, the upper surface is formed with a bolt hole 11, the insertion hole 12 is formed in the middle of the vertical body Thus, the mounting unit 110 is installed through the insertion hole 12, the vibration reduction of the compressor for refrigeration air conditioning equipment, characterized in that the fastening means 100 is fastened to the bolt hole 11 on the upper surface rescue. The method of claim 1,
The outer peripheral end of the mounting unit 110 constitutes the bent shape of the frame 200, the vibration damping material 210, 211 so as to be spaced on any one surface of the frame 200 or the case 140 Vibration reduction structure of the compressor for refrigeration and air conditioning equipment, characterized in that the installation. The method of claim 5, wherein
The adhesion damping material 211 is integrally attached so as to vertically descend from the outer peripheral end of the mounting 110 of the frame 200, and a lower end of the adhesion damping material 211 is spaced apart from the bottom surface of the case 140. Vibration reduction structure of the compressor for refrigeration and air conditioning equipment, characterized in that the. The method of claim 5, wherein
The vibration damping material 211 is vertically attached to the case 140, the upper end of the vibration damping material 211 of the compressor for refrigerating and air conditioning equipment, characterized in that spaced apart from the mounting unit 110. Vibration reduction structure.

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