CN106440102A - Compressor Vibration Damping Structure of Suspended Air Conditioner External Unit - Google Patents

Abstract

The invention discloses a compressor vibration reduction structure of a ceiling type air conditioner outdoor unit, which comprises a compressor body, a supporting plate and a chassis, wherein the chassis is provided with the supporting plate, the compressor body is arranged on the supporting plate, the bottom of the compressor body is provided with a compressor foot, the compressor foot is connected with the supporting plate, and a first spring is arranged between the compressor foot and the supporting plate. Set up first spring between compressor foot and backup pad, the compressor foot links to each other but does not have direct contact with the backup pad, but through first spring indirect contact, the vibration of having avoided the compressor body directly transmits to the backup pad on, first spring can absorb and the most vibration of gentle compressor body production, kinetic energy conversion that has the vibration is other energies, contact between compressor body and the chassis becomes the face contact by the point contact through the backup pad, the effectual damping function that has reached, still increased compressor body degree of freedom through setting up first spring, the use of compressor body has been made things convenient for.

Description

Compressor Vibration Damping Structure of Suspended Air Conditioner External Unit

technical field

The invention relates to the field of air-conditioning equipment, in particular to a compressor vibration-damping structure for a ceiling-type air-conditioning external unit.

Background technique

Traditional air-conditioning outdoor units are noisy and need to be installed away from people’s activity areas. Sometimes it is even necessary to provide a separate equipment room for the air-conditioning outdoor unit, so that the air-conditioning installation takes up a lot of space in buildings. Due to the current urban land prices are generally high, The situation that the air conditioner takes up a lot of space during use has seriously increased people's living costs.

The main reason for the noise of the external unit of the air conditioner is that the vibration generated by the compressor is transmitted to the chassis. The existing solution is mainly to use the rubber vibration damping pad provided by the compressor manufacturer. This vibration damping structure can be used in occasions with low noise requirements. However, for high-power compressors, this rubber pad cannot completely isolate the vibration of the compressor, so it cannot completely isolate the vibration transmission between the compressor and the chassis of the machine. When the vibration of the compressor is transmitted to the sheet metal of the chassis When the structure is used, it is easy to cause the resonance of the sheet metal structure. Especially for frequency conversion units, the vibration characteristics of the compressor change with the frequency, and the vibration energy of the compressor is transmitted to the machine shell, which is more likely to cause sheet metal resonance, which seriously affects the use safety of the air conditioner external unit.

Contents of the invention

The purpose of the present invention is to provide a compressor vibration damping structure for a ceiling-mounted air conditioner external unit, which has good vibration damping and vibration isolation effects, and avoids resonance between the compressor and the sheet metal structure.

For reaching this purpose, the present invention adopts following technical scheme:

A compressor damping structure for a ceiling-mounted air conditioner external unit, comprising a compressor body, a support plate and a chassis, the chassis is provided with the support plate, the compressor body is installed on the support plate, and the compressor body The bottom of the compressor is provided with a compressor foot, the compressor foot is connected with the support plate, and a first spring is arranged between the compressor foot and the support plate.

Preferably, a damping plate is provided between the first spring and the support plate, the first spring is mounted on the damping plate, and multiple a rubber mat.

Preferably, an isolation plate is provided between the chassis and the support plate.

Preferably, the isolation board is made of felt and butyl rubber.

Preferably, the chassis includes a bottom plate and two fixing bars arranged under the bottom plate, and the support plate is installed on the bottom plate.

Preferably, a reinforcing rib is further provided under the bottom plate, and the reinforcing rib is located between the two fixing strips.

Preferably, the support plate is connected to the compressor foot through bolts, and the bolts pass through the first spring.

Preferably, the center of the bottom of the compressor body is provided with an outwardly extending connecting hole, and the outwardly extending connecting hole is connected to the support plate.

Preferably, a second spring is provided between the outwardly extending connecting hole and the support plate, and the second spring is embedded in the outwardly extending connecting hole.

Preferably, the number of the compressor feet is three, and the compressor feet are equidistantly distributed around the center of the bottom of the compressor body.

Beneficial effects of the present invention:

The first spring is set between the compressor foot and the support plate to prevent the vibration of the compressor body from being directly transmitted to the support plate. The first spring can absorb and buffer most of the vibration generated by the compressor body, and convert the kinetic energy of the vibration into other Energy, by using the support plate to change the contact between the compressor body and the chassis from point contact to surface contact, the vibration reduction function is more effectively achieved, and the occurrence of resonance is also avoided.

Description of drawings

Fig. 1 is a perspective view of a compressor vibration damping structure of a ceiling-mounted air conditioner external unit;

Fig. 2 is a cross-sectional view along the width direction of the vibration damping structure of the compressor of the ceiling-mounted air conditioner external unit;

Fig. 3 is a cross-sectional view along the length direction of the vibration damping structure of the compressor of the ceiling-mounted air conditioner external unit;

Fig. 4 is a top view of the vibration damping structure of the compressor of the ceiling-mounted air conditioner external unit;

Fig. 5 is a bottom view of the vibration damping structure of the compressor of the external unit of the ceiling-mounted air conditioner;

In the picture:

1. Compressor body; 101. Compressor foot;

2. Fixed strip;

3. Support plate;

4. The first spring;

5. Damping plate;

6. Rubber pad;

7. Isolation board;

8. Reinforcing ribs;

9. Extended connection hole;

10. The second spring.

detailed description

The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods.

As shown in Figure 1-5, a compressor vibration reduction structure for a ceiling-mounted air conditioner external unit includes a compressor body 1, a support plate 3 and a chassis, the chassis is connected with a support plate 3, and the compressor body 1 is installed on the support plate 3 , The bottom of the compressor body 1 is provided with a compressor foot 101 , the compressor foot 101 is connected to the support plate 3 , and a first spring 4 is provided between the compressor foot 101 and the support plate 3 .

A first spring 4 is provided between the compressor foot 101 and the support plate 3 , although the compressor foot 101 and the support plate 3 are connected but not in direct contact, but indirect contact through the first spring 4 . This prevents the vibration of the compressor body 1 from being directly transmitted to the support plate 3, and the first spring 4 can absorb and buffer most of the vibrations generated by the compressor body 1 due to its own characteristics, and convert the kinetic energy of the vibration into other energy. The vibration transmitted to the chassis through the support plate 3 can be effectively reduced, and the contact between the compressor body 1 and the chassis is changed from a point contact to a surface contact through the support plate 3, and the vibration reduction function is more effectively achieved. The degree of freedom of the compressor body 1 is also increased by providing the first spring 4 , which facilitates the installation and use of the compressor body 1 .

A damping plate 5 is provided between the first spring 4 and the supporting plate 3 .

In order to further realize the vibration damping effect, a damping plate 5 is arranged between the first spring 4 and the support plate 3, and the stress mode between the first spring 4 and the support plate 3 is converted from point force to surface force, which is stable The stress mode increases the vibration damping effect.

A plurality of rubber pads 6 are arranged between the damping plate 5 and the support plate 3 , and the plurality of rubber pads 6 are symmetrically distributed around the geometric center of the support plate 3 .

Specifically, a rubber pad 6 is provided between the damping plate 5 and the support plate 3. When the vibration effect is transmitted to the rubber pad 6, the rubber pad 6 plays a role of damping and vibration reduction, and converts the kinetic energy of the vibration into heat energy. The vibration reduction of the compressor body 1 provides a new way, the plurality of rubber pads 6 are symmetrically distributed, which increases the overall stability and symmetry, and avoids the vibration caused by asymmetry. The number of rubber pads 6 can be preferably six, so that the best structural stability can be achieved.

An isolation plate 7 is provided between the chassis and the support plate 3 .

In order to completely isolate the vibration generated by the compressor body 1 from the chassis and prevent the vibration generated by the compressor body 1 from being transmitted to the chassis, an isolation plate 7 is provided between the chassis and the support plate 3, and the isolation plate 7 is composed of some flexible materials. .

Specifically, the insulation board 7 is selected as a composite molded board made of felt and butyl rubber.

In order to achieve the best isolation effect, the isolation plate 7 is determined to be a molded plate made of felt and butyl rubber, which not only has a good vibration isolation effect but also ensures the stability of use, and further strengthens the vibration reduction effect.

The chassis includes a base plate and two fixing bars 2 arranged below the base plate, and a support plate 3 is installed on the base plate. A reinforcing rib 8 is also provided under the bottom plate, and the reinforcing rib 8 is located between the two fixing bars 2 .

The chassis includes a base plate, two fixing bars 2 and two reinforcing ribs 8, the two fixing bars 2 and two reinforcing ribs 8 are located under the base plate, and the two reinforcing ribs 8 are located between the two fixing bars 2 and are fixed with the two The bar 2 is vertical, and the bottom plate, two fixing bars 2 and two reinforcing ribs 8 are all sheet metal parts, which reduces the weight of the chassis and also enhances the stability of its own structure, achieving the dual effects of vibration reduction and weight reduction. This strengthening of the chassis structure further prevents the vibration from being transmitted outward through the chassis, and has a certain structural isolation effect.

The support plate 3 is connected to the compressor foot 101 through bolts, and the bolts pass through the first spring 4 .

In specific use, the support plate 3 and the compressor foot 101 are connected by bolts, and the bolts pass through the first spring 4. Since the screw rod of the bolt has a certain length, it can be used as the central axis of the first spring 4. When the first spring 4 stretches and deforms Because the central axis function of the bolt has a certain limit effect on it, it will not deflect too much outward, and it also protects the compressor body 1 from impact contact with other components, ensuring the stability of the compressor body 1 in use and security.

The center of the bottom of the compressor body 1 is provided with an overhanging connection hole 9 , and the overhanging connection hole 9 is connected with the support plate 3 .

As a central stable structure, an overhanging connection hole 9 is provided at the center of the bottom of the compressor body 1. The overhanging connection hole 9 is formed by setting a boss outward at the center of the bottom of the compressor body 1, and the boss is slotted inward to form an outer The connecting hole 9 is extended, and the connecting hole 9 is connected with the support plate 3 by bolts, which maintains the stability of the installation of the compressor body 1 while damping vibration.

A second spring 10 is provided between the outwardly extending connecting hole 9 and the support plate 3 , and the second spring 10 is embedded in the outwardly extending connecting hole 9 .

In order to cooperate with the shock-absorbing and buffering effect of the first spring 4 on the periphery, a second spring 10 is arranged between the overhanging connection hole 9 and the support plate 3 at the same time, and the second spring 10 is embedded in the overhanging connection hole 9. When the vibration is deformed, it still surrounds the center of the bottom, and the compressor body 1 will not deflect to a certain point to ensure the overall stability and further strengthen the vibration reduction effect.

The number of compressor feet 101 is three, and the compressor feet 101 are equidistantly distributed around the center of the bottom of the compressor body 1 .

As the best solution, the number of compressor feet 101 is selected to be three, and the compressor feet 101 are distributed equidistantly around the center of the circle along the bottom center of the compressor body 1. When the number of compressor feet 101 is three, it just forms a triangular structure , the triangle has the best stability, and the adjacent compressor feet 101 are equidistantly distributed, which has good symmetry and maintains excellent stability. At the same time, the setting of the number of compressor pins 101 will be flexibly changed under different usage environments and different power requirements, and an optimal solution can be selected.

The vibration damping structure of the compressor of the air conditioner outdoor unit provided by the present invention is applicable to various seat-mounted compressors at the same time, and the verification result is tested with a variable frequency rotor compressor with large vibration changes. The complete unit power is 16kW, and the refrigeration capacity on the market is 6 horsepower. (Horse Power, HP), the noise value at 1 meter directly below was tested by a semi-anechoic laboratory, and the results are shown in Table 1:

compressor frequency 30 40 50 55 60 66 Noise valuedB/A 34.29 35.35 36.65 38.94 38.58 38.90

Table I

The dB in Table 1 is the theoretical noise value, and A is the A-weighted sound level in the noise weighting method.

The above results show that the compressor vibration damping structure of the air conditioner external unit provided by the present invention can not only realize the vibration damping of the fixed-speed unit, but also avoid the problem of resonance of the sheet metal parts caused by the change of the vibration characteristics of the variable frequency compressor when the frequency is changed . There is no resonance section in the entire operating range of the unit, and the noise value is far lower than that of similar products on the market, even lower than the noise of mainstream air conditioner indoor units. It is completely acceptable for indoor installation and can be widely used.

Apparently, the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, rather than limiting the implementation of the present invention. For those of ordinary skill in the art, other changes or changes in different forms can be made on the basis of the above description. It is not necessary and impossible to exhaustively list all the implementation manners here. All modifications, equivalent replacements and improvements made within the spirit and principles of the present invention shall be included within the protection scope of the claims of the present invention.

Claims (10)

1. A compressor damping structure for a ceiling-mounted air-conditioning external unit, characterized in that it comprises a compressor body, a support plate and a chassis, the chassis is provided with the support plate, and the compressor body is installed on the support plate Above, a compressor foot is provided at the bottom of the compressor body, the compressor foot is connected to the support plate, and a first spring is provided between the compressor foot and the support plate. 2. The vibration damping structure of the compressor of the ceiling-mounted air conditioner outdoor unit according to claim 1, wherein a vibration damping plate is provided between the first spring and the support plate, and the first spring is installed on On the damping plate, a plurality of rubber pads are arranged between the damping plate and the support plate. 3 . The compressor vibration damping structure for a ceiling-mounted air conditioner outdoor unit according to claim 1 , wherein an isolation plate is provided between the chassis and the support plate. 4 . 4 . The vibration damping structure for a compressor of a ceiling-mounted air conditioner outdoor unit according to claim 3 , wherein the isolation plate is made of felt and butyl rubber. 5 . 5. The vibration damping structure of the compressor of the ceiling-mounted air conditioner outdoor unit according to claim 1, wherein the chassis includes a bottom plate and two fixing strips arranged below the bottom plate, and the support plate is installed on the on the bottom plate. 6 . The vibration damping structure for a compressor of a ceiling-mounted air conditioner outdoor unit according to claim 5 , wherein a reinforcing rib is further provided under the bottom plate, and the reinforcing rib is located between the two fixing bars. 7 . 7 . The compressor vibration damping structure of a ceiling-mounted air conditioner outdoor unit according to claim 1 , wherein the support plate is connected to the compressor foot through bolts, and the bolts pass through the first spring. 8 . 8. The vibration damping structure of the compressor of the ceiling-mounted air conditioner outdoor unit according to claim 1, characterized in that, the center of the bottom of the compressor body is provided with an overhanging connection hole, and the overhanging connection hole is connected to the support plate connected. 9. The vibration damping structure of the compressor of the ceiling-mounted air-conditioning outdoor unit according to claim 8, wherein a second spring is provided between the extending connection hole and the support plate, and the second spring is embedded in the The overhanging connection hole. 10. The vibration damping structure of the compressor of the ceiling-mounted air conditioner external unit according to claim 1, wherein the number of the compressor feet is three, and the compressor feet take the center of the bottom of the compressor body as the center of circle distributed in a circle.