JPS6345476A - Vibrationproof device for compressor - Google Patents

Abstract

PURPOSE:To suppress vibration by attenuating the vibration transmitted onto a substrate from the installation legs of a compressor by a buffer ring, buffer main ring, and a buffer applying body. CONSTITUTION:A buffer ring 13 is installed onto the installation leg 12 of a compressor 11, and a washer-based bolt 14 for fixation is inserted into the center of the buffer ring 13. The periphery of the seat part 14a of the washer- based bolt 14 is covered by a buffer applying body 15, and said buffer applying body 15 is press-attached and fixed onto a substrate 17 by a fixing metal fitting 16, and a buffer main body ring 18 is interposed between the buffer ring 13 and the fixing metal fitting 16. Therefore, the vibration transmitted to the substrate 17 from the installation leg 12 of the compressor 11 is attenuated by the buffer ring 13, buffer main body ring 18, and the buffer applying body 15, and the vibration can be suppressed furthermore in comparison with in the former case. Further, the device can perform the buffering action for the drop and the impact force in the circulation stages.

Description

[Detailed description of the invention] Industrial applications The present invention relates to a vibration isolator for a compressor.

BACKGROUND OF THE INVENTION In recent years, the vibration of air conditioner compressors has tended to be reduced along with noise reduction, but the situation is still not sufficient. On the other hand, inverter air conditioners, in which the rotational speed of the compressor can be varied by an inverter installed within the unit, have started to become popular. With the spread of inverter air conditioners, within the variable frequency range, the lower the frequency and the lower the rotation speed of the compressor, the more vibration problems caused by the compressor as an oscillation source will occur, and the conventional compressor system The vibrating structure is no longer able to absorb vibrations.

Conventionally, a vibration isolating device for a compressor of an air conditioner has generally been considered to have a structure in which vibration is damped by using vibration isolating rubber or a coiled elastic support as the main shock absorber.

Hereinafter, the vibration isolation structure of the conventional compressor mentioned above will be explained with reference to the drawings. FIG. 3 is a plan view of a conventional vibration isolator for a compressor of an air conditioner, and FIG. 4 is a vertical sectional view of a main part of a mounting leg of the vibration isolator for a compressor.

3 and 4, 1 is a compressor, 2 is an accumulator, 3 is a suction pipe of the accumulator 2, 4 is a discharge pipe on the compressor, 5 is a terminal box provided on the upper surface of the compressor, 6 is compression+! This is a mounting leg fixed to the bottom outer shell of &1 by welding or the like. The mounting bolt 8 for fixing the mounting leg 6 to the board 7 of the air conditioner unit is a ring-shaped shock absorbing body 9 made of vibration isolating rubber fitted into a plurality of holes 6a provided in the mounting leg 6. installed by inserting the
Further, the seat bolt 8 that passes through the through hole 7a provided in the board 7 has its seat portion 8a fixed to the board 7 by welding or the like, and the mounting leg 6 is attached to the buffer main body 9 by a nut 10 screwed onto the seat bolt 8. It is fixed to the substrate 7 via.

In the vibration isolating device for the compressor 1 configured as above,
Of the vibrations generated by the compressor 1 during cooling or heating operation, the vibrations transmitted to the mounting legs 6 are damped by the buffer main body 9.

Problems to be Solved by the Invention However, in the above configuration, since the seat bolts 8 of the mounting legs 6 of the compressor 1 are fixed to the base plate 7, the vibrations from the mounting legs 6 are completely absorbed by the buffer main body 9. Some of the vibrations are damped and are transmitted to the board 7 via the seat bolt 8.
The problem was that the information was transmitted to

The present invention solves the above-mentioned problems by further attenuating the vibrations generated from the compressor during cooling or heating operation, which are transmitted from the mounting legs of the compressor to the board via the seat bolts, thereby reducing vibration. It is an object of the present invention to provide a vibration isolating device for a compressor that can protect the compressor from drop impacts during transportation and cargo handling.

Means for Solving the Problems In order to solve the above problems, the vibration isolating device for a compressor of the present invention has a buffer ring that fits into a hole provided in a mounting leg of a compressor, and a circuit board that penetrates through the center of the buffer ring. Equipped with a seat bolt to secure it to the
The periphery of the seat of the seat bolt is covered with a buffer addition body and fixed onto the substrate with a fixing metal fitting, and a plurality of convex portions are provided on the upper and lower surfaces between the fixing metal fitting and the buffer ring. A buffer main ring is inserted.

Effect With the above configuration, the vibration transmitted from the compressor mounting leg to the board is attenuated by the buffer ring, the main buffer ring, and the shock absorbing body, resulting in lower vibrations than before, and the vibration transmitted from the compressor mounting leg to the board is damped. Due to its elasticity, the seat bolt swings its head around the fixed part, resulting in falls on distribution stairs,
It also plays a buffering role against impact forces.

Example An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, a hole 1 provided in the mounting leg 12 of the compressor 11
A ring-shaped buffer ring 13 made of anti-vibration rubber is fitted to 2a through the small diameter part, and a fixing bolt 14 is inserted through the center of the TLT shock ring 13, and this is attached to the lower surface of the T1 shock ring 13. A plurality of vibration absorbing convex portions 13 are integrated with the
a are arranged on a concentric circumference, as shown in FIG. 2, for example. The periphery of the seat portion 14a of the seat bolt 14 is covered with a buffer addition body 15, and the seat bolt 14 is buffered against the base plate 17 by a fixing metal fitting 16 configured to cover the outer periphery of the buffer addition body 15 except for the bottom. It is crimped in the axial direction via the additional body 15 and fixed by spot welding or the like.

This shock absorbing member 15 is made of hard anti-vibration rubber.

A buffer main ring 18 made of anti-vibration rubber is inserted between the buffer ring 13 and the fixing metal fitting 16 and is inserted through the seat bolt 14. On the upper and lower surfaces of the buffer main ring 18, there are a plurality of shock absorbing rings 18 similar to the buffer ring 13. A washer 19 made of metal or resin is interposed between the protrusion 18a on the upper surface of the main buffer ring 18 and the protrusion 13a on the lower surface of the buffer ring 13. equipped. The buffer ring 13 and the main buffer ring 18 are connected to the seat bolt 1.
The seat bolt 14 is indirectly fixed to the base plate 17 by being press-fitted to the fixing fitting 16 by a nut 20 screwed into the base plate 17.

Here, there is an important relationship between the hardness of the shock absorbing body 15 and the urging force that biases the fixing fitting 16 in the axial direction of the seat bolt 14 to fix it to the base plate 17. Generally, the hardness of the shock absorbing body 15 It is better to use a larger biasing force as the hardness increases, and a larger biasing force as the hardness decreases. If the hardness of the additional shock absorbing body 15 is small, the biasing force of the fixing fittings 16 may be increased to tighten the additional shock absorbing body 15.
It is desirable that the shock absorbing member 15 has a dimensional relationship such that it is compressed and the shock absorbing member 15 is in surface contact with the entire inner surface of the fixing fitting 16.

In addition, the relationship between the hardness of the buffer ring 13, the main buffer ring 18, and the additional buffer member 15 is important, and the mass of the compressor 11,
Routing the discharge piping and suction piping from the compressor 11,
Air conditioning load conditions during air conditioner operation.

If it is an inverter air conditioner, the vibrations generated from the compressor 11 will vary slightly depending on the frequency range.
This will be determined experimentally using an appropriate combination. moreover!
! The number, arrangement, and size of the convex portions 13a provided on the lower surface of the shock ring 13 and the convex portions 18a provided on the upper and lower surfaces of the buffer main ring 18 have a large influence on the vibration absorption effect, and should be determined experimentally. Become.

As described above, according to this embodiment, during cooling or heating operation of the air conditioner, among the vibrations generated from the compressor 11, the vibrations transmitted from the mounting legs 12 of the compressor 11 are absorbed by the buffer ring 13 and the main buffer ring X8. It is attenuated and transmitted to the seat bolt 14. Further, the vibrations transmitted to the seat bolt 14 and damped are damped by the additional shock absorbing body 15.

In addition, the seat bolt 14 is indirectly fixed to the board 17, and the elasticity of the shock absorbing member 15 causes the head to swing around the fixed part, so it can withstand drops and impact forces during the distribution stage. play a critical role.

Although the above embodiments have been described in the case of an air conditioner, it goes without saying that the present invention can also be widely applied to vibration isolation for compressors in other refrigeration equipment such as refrigerators.

Effects of the Invention As described above, according to the present invention, the vibration transmitted from the mounting leg of the compressor to the board is attenuated by the buffer ring, the main buffer ring, and the additional buffer, so that the vibration can be reduced more than ever before. Can be done. In addition, the seat bolt is indirectly fixed to the board via the shock absorbing body, and the elasticity of the shock absorbing body causes the bolt to swing around the fixed part, so it is susceptible to drops and impact forces during the distribution stage. Its practical effects are great, such as playing a buffering role against the situation.

[Brief explanation of the drawing]

Fig. 1 is a vertical sectional view of the main part of a mounting leg of a vibration isolator for a compressor showing an embodiment of the present invention, Fig. 2 is a bottom view of a buffer ring, and Fig. 3 is a conventional vibration isolator for a compressor. FIG. 4 is a longitudinal cross-sectional view of the main part of the mounting leg of the vibration isolator of the same compressor. DESCRIPTION OF SYMBOLS 11... Compressor, 12... Mounting leg, 12a... Mounting leg hole, 13... Buffer ring, 13a... Convex part,
14... Bolt with seat, 14a... Seat, 15...
Buffer addition body, 16... Fixing metal fittings, 17... Board,
18...Buffer main ring, 18a...Protrusion, 19.
...Washer. Agent Yoshihiro Morimoto Figure 1 1 Huh! C'4-

Claims (1)

[Claims] 1. Equipped with a seat bolt that passes through the center of the buffer ring that fits into the hole provided in the mounting leg of the compressor and fixes it to the board,
The periphery of the seat of the seat bolt is covered with a buffer addition body and fixed onto the substrate with a fixing metal fitting, and a plurality of convex portions are provided on the upper and lower surfaces between the fixing metal fitting and the buffer ring. A compressor vibration isolator equipped with a shock absorbing ring.