CN101187371A - Compressor vibration damping mat - Google Patents

Abstract

The invention discloses an oblique damping pad of a compressor. The compressor comprises a cylinder, a rolling ring, a centrifugal shaft and a slide vane, and the apical angle of a triangle disk below the compressor is provided with the damping pads which are installed by slanting a certain angle. The axial line of each damping pad is aligned to the center of gravity of the compressor, and a conical arrangement is formed by the three damping pads. Furthermore, the apical angle of the triangle disk is slanted in the same angle with the damping pads, and the base board of an air conditioner on which the compressor is located is sloped in the same angle with the damping pads. A fixing device is specially arranged between the base board of an air conditioner on which the compressor is located and the damping pad. The invention further discloses an oblique damping pad of the compressor, the axial line of the damping pad is sloped in a certain angle in the perpendicular direction, and the axial line of each damping pad can align to the center of gravity of the compressor, the three damping pads are arranged in a cone, and the apical angle of the triangle disk for installing the damping pad also can be slanted in a certain angle.

Description

The damping pad of compressor

Technical field

The present invention relates to a kind of damping pad of compressor, relate in particular to the oblique damping pad of the compressor of using gravity-center triangle layout.

Background technique

Compressor is the heart of air-conditioning, as Fig. 1 a to Fig. 1 c and shown in Figure 2, the rolling rotor type compressor of prior art mainly by cylinder 21, roll ring 22, eccentric shaft 13 and slide plate 23 etc. and form.

The radius R of cylinder 21 is greater than the radius r of rolling ring 22, rolling the center of circle O2 of ring and cylinder 21 center of circle O1 has certain for e, when rolling ring 22 when cylinder 21 center of circle O1 rotate, rolling ring 22 is close to and has atomic little gap to roll on cylinder 21 internal surfaces, cylinder 21 internal surfaces and roll between ring 22 outer surfaces and form a crescent shape fluid chamber thus, its position changes with the corner that rolls ring 22.Slide plate 23 is divided into two independent parts with fluid chamber, and a part communicates with intakeport 46, and another part communicates with outlet pipe by the exhaust valve plate of relief opening 43.Slide plate 23 is pressed on by spring 23a and rolls on ring 22 outer surfaces, when the point of contact that rolls ring 22 and cylinder 21 forwards to above intakeport 46, slide plate 23 right sides to the spatial volume between the point of contact communicates with intakeport 46, and increases gradually with the rotation of rolling ring 22, and sucks gas from intakeport 46; When rolling ring 22 point of contact when forwarding uppermost position to, this partial volume reaches maximum value, and has been full of low pressure refrigerant vapor; Continue rotation when rolling ring 22, when point of contact had passed through intakeport 46 positions, the low-pressure gas of suction was compressed because of volume dwindles gradually, was compressed gas when reaching exhaust pressure, then the exhaust valve plate of relief opening 43 is opened and the beginning exhaust, finishes by relief opening 43 until rolling ring 22 point of contact.Owing to separate by slide plate 23 in the cylinder 21, in fact roll ring 22 and whenever turn around and promptly finish once air-breathing, compression and exhaust process.

Because the rotation of eccentric part 13a, pressurized gas produces pressure and acts on cylinder 21, and cylinder 21 is welded in compressor case 1 body, thereby produces the compressor body rotational vibration, drives its connected element, as vibrations such as copper pipe, air conditioner housing.Therefore designing the compressor vibration damping equipment seems particularly important.

Shown in Fig. 1 c, at present, the vibration reducing measure that prior art extensively adopts is the damping pad 33 that rubber is installed in the compressor bottom, and its purpose is to reduce the vibration of compressor for air conditioner, also makes compressor itself avoid being rigidly connected, the constant compression machine.

But, as shown in Figure 3, the compressor of prior art when mounted, damping pad 33 all vertically is installed in compressor triangle dish 32 times, the back by bolt 34 fastening, it has effectively controlled the influence of vertical direction vibration of compressor for casing 1 to a certain extent, but we are by the analysis to the compressor operating principle, and as can be seen, compressor is when work, the main vibration that is produced is not the vibration of vertical direction, but the vibration of substantially horizontal.When compressor itself was subjected to a horizontal force, whole system presented tangible imbalance.As shown in Figure 3, x, y represent substantially horizontal, and z represents Vertical direction, so the stressed sum after the two dimension on the horizontal plane is decomposed is respectively ∑ F (x), ∑ F (y), the stressed sum of Vertical direction is ∑ F (z),

$\left\{\begin{array}{c}\text{\ΣF}\left(x\right)=0\\ \mathrm{\ΣF}\left(y\right)\≠0\\ \mathrm{\ΣF}\left(z\right)=0\end{array}\right.$

It is the active force that compressor must be subjected to a substantially horizontal.Because the horizontal force imbalance produces the moment of torsion for the base angle, thereby makes system's instability.

Its main cause as shown in Figure 4, in 33 active forces that can produce of damping pad, power F on the substantially horizontal (x) and F (y) a little less than, and the power F on the Vertical direction (z) is stronger, the structural design of the damping pad 33 of compressors rubber is mainly used in the vertical direction vibration damping, and level to flexural rigidity be not the design original intention of damping pad.And during compressor operating, the vertical direction vibration is obvious littler than substantially horizontal.

Therefore, when the damping pad of the compressor of prior art vertically is installed on the compressor, can not reach the minimizing vibration of compressor of our expection, especially the purpose of substantially horizontal vibration.

Summary of the invention

Technical problem to be solved by this invention is, a kind of oblique damping pad of compressor is provided, and can reduce compressor vibration in the horizontal direction.

In order to solve the problems of the technologies described above, the technical solution used in the present invention is:

Oblique damping pad as compressor of the present invention, described compressor comprises cylinder, rolls ring, eccentric shaft and slide plate, the drift angle of the triangle dish under the compressor is equipped with damping pad, this damping pad inclination several angle is installed, with the center of gravity that each damping pad axis is all aimed at compressor, three tapered layouts of damping pad.

And, the drift angle of triangle dish and the identical angle of damping pad inclination.

Simultaneously, the base plate of compressor place air-conditioning and the identical angle of damping pad inclination.

Simultaneously, be provided with fixing device between the base plate of compressor place air-conditioning and the damping pad specially.

Oblique damping pad as another kind of compressor of the present invention, this compressor comprises cylinder, rolls ring, eccentric shaft and slide plate, the drift angle of the triangle dish under the compressor is equipped with damping pad, the axis tilt of this damping pad is in the Vertical direction several angle, the center of gravity that makes each damping pad axis all aim at compressor, three tapered layouts of damping pad.Certainly, the drift angle that the triangle dish of damping pad is installed certain angle that also can tilt.

The invention has the beneficial effects as follows:

The present invention is when being subjected to transverse force F1, and it is stressed as follows:

F1+G＝F＝-F′＝-kΔx

Be that compressor is subjected to any direction excitation time, system is stressed all to reach balance.

$\left\{\begin{array}{c}\text{\ΣF}\left(x\right)=0\\ \mathrm{\ΣF}\left(y\right)=0\\ \mathrm{\ΣF}\left(z\right)=0\end{array}\right.$

Center of gravity triangle layout makes the effect of damping pad be not fully exerted, and helps improving the stability of compressor, and the ability of opposing external impacts, the Security that improves system.

Description of drawings

Fig. 1 a is the internal structure master sectional view of prior art compressor

Fig. 1 b is the internal structure of the prior art compressor sectional view of bowing

Fig. 1 c is the unitary construction schematic perspective view of prior art compressor

Fig. 2 is the operational diagram of prior art compressor

Fig. 3 is the force analysis sketch of prior art compressor

Fig. 4 is the force analysis sketch of the damping pad of prior art compressor

Fig. 5 is the damping pad of compressor of the present invention and the force analysis sketch of place compressor thereof

Fig. 6 is the scheme of installation of first embodiment of the damping pad of compressor of the present invention

Fig. 7 is the scheme of installation of second embodiment of the damping pad of compressor of the present invention

Among the figure:

1: casing 3: loam cake

4: tenminal block 7: suction pipe

8: oil storage tank 10: the power generating unit

11: stator 12: rotor

13: eccentric shaft 13a: eccentric part

20: press part 21: cylinder

21a: groove 22: roll ring

23: slide plate 23a: spring

24: upper bearing 25: lower bearing

111: motor 32: the triangle dish

33: damping pad 34: bolt

35: nut 36: packing ring

37: base plate 43: relief opening

46: intakeport

Embodiment

Below in conjunction with the drawings and specific embodiments the present invention is described in further detail:

As shown in Figure 1a, the same with prior art, rotary compressor of the present invention is made of casing 1, power generating unit 10, press part 20 and volume-variable portion 30, and power generating unit 10, press part 20 and volume-variable portion 30 are positioned at casing 1 inside.In Fig. 1, power generating unit 10 is positioned at the top of compressor, and press part 20 is positioned at the bottom of compressor, but also can be as required with their location swap.The upper and lower of casing 1 is equipped with loam cake 3 and bottom 5 respectively, and the inside of casing 1 has formed confined space thus.The suction pipe 7 that is used for sucking driving fluid is installed in a side of casing 1, and is also connecting the liquid container 8 that lubricant oil can be separated from refrigeration agent on the suction pipe 7.In addition, outlet pipe 9 is equipped with at the center of loam cake 3, and compressed fluid can be discharged by this outlet pipe 9.

Power generating unit 10 comprises with lower member, promptly is fixed on the stator 11 in the casing 1, the inside that is installed in stator 11 and rotatable rotor 12, is pressed into the eccentric shaft 13 in the rotor 12.Rotor 12 can rotate under the effect of electromagnetic force, and eccentric shaft 13 can conduct the rotating force of rotor 12 to press part 20.For external power supply being inputed to stator 11, tenminal block 4 is housed on the loam cake 3.This rotor 12 can counter-rotating.Be that rotor 12 both can also can rotate towards counter clockwise direction toward the clockwise direction, eccentric shaft 13 also can rotate together toward the clockwise direction or counterclockwise with such rotor 12 simultaneously.

With reference to Fig. 1 b, press part 20 substantially by cylinder 21, roll ring 22, upper bearing 24 and lower bearing 25 are formed, cylinder 21 is fixed in the casing 1, rolls to encircle 22 and be positioned at cylinder 21 inside, upper and lower bearing 24,25 is installed in the upper and lower of cylinder 21 respectively.

The inside of cylinder 21 has formed the inner space with certain volume, and cylinder 21 need have enough intensity, so that can bear the pressure of compressed fluid.As shown in Figure 2, the eccentric part 13a that forms is housed in the inner space of cylinder 21 on eccentric shaft 13.Eccentric part 13a is a kind of cam of off-centre, the certain distance of rotating center of its centre distance eccentric shaft 13.In addition, also formed on the cylinder 21 from its internal surface begin to cave in groove 21a of certain depth.Slide plate 23 is housed in the groove 21a, and for slide plate 23 can be packed in the groove 21a fully, groove 21a need have enough length.

Rolling ring 22 is parts of a ring-type, and its external diameter is littler than the internal diameter of cylinder 21.As shown in Figure 2, roll ring 22 and be assembled in eccentric part 13a and go up and can rotate, it also is close to the internal surface of cylinder 21 simultaneously.Therefore when eccentric shaft 13 rotations, encircle the 22 outer surface rotations that can paste eccentric part 13a, Yi Bian roll along the internal surface of cylinder 21 on one side roll.In addition, roll ring 22 during doing rolling motion, can under the effect of eccentric part 13a, revolve round the sun apart from the certain distance of rotating center.Because the outer surface that rolls ring 22 of taking exercises always contacts with the internal surface of cylinder under the effect of eccentric part 13a, therefore in the inner space of cylinder, roll between the internal surface of ring 22 outer surface and cylinder 21 and form meniscate fluid chamber, in rotary compressor, fluid chamber is used for sucking and compressed fluid.

Slide plate 23 is installed in the groove 21a of cylinder 21 as mentioned above.In addition, spring 23a is housed also in the groove 21a, this spring 23a can give elastic support to slide plate 23, slide plate 23 is always kept and rolls ring 22 contacted states.That is to say that the end of spring 23a is fixed on the cylinder 21, the other end is assembled on the slide plate 23, and it can push slide plate 23 to roll to ring 22.Slide plate 23 can be separated into fluid chamber two separate spaces as shown in Figure 2.When eccentric shaft 13 rotation makes when rolling ring 22 revolution, the size in two spaces is variable or complementary.For example, when rolling ring 22 when rotating toward the clockwise direction, when one of them space dwindles gradually, another space then increases relatively gradually.But the volume sum in two spaces is always fixing, roughly big or small identical with fluid chamber.When eccentric shaft 13 towards clockwise or a certain direction rotation counterclockwise, above-mentioned two spaces can be played the effect of the suction chamber that can suck fluid and pressing chamber that can compressed fluid respectively.Same as above, along with the rotation of rolling ring 22, the pressing chamber in two spaces will dwindle gradually, the fluid that sucks before the compression, and suction chamber then can increase gradually, thereby sucks new fluid.If it is opposite to roll the sense of rotation of ring 22, the function in two spaces will be just in time opposite so.Promptly when rolling ring 22 when counterclockwise revolving round the sun, the space of rolling ring 22 right sides is a pressing chamber, and when rolling ring 22 and rotate toward the clockwise direction, then leftward space is a pressing chamber.

Upper bearing 24 and lower bearing 25 are installed in the upper and lower of cylinder 21 respectively as shown in Figure 1a, and they are supporting eccentric shaft 13 and it can be rotated.By connected elements such as screw bolt and nut, cylinder 21 links together securely with upper and lower part bearing 24,25, therefore can be with the inner space of cylinder 21, and particularly fluid chamber is closed.

Volume-variable portion 30 is made up of relief opening 43, intakeport 46 and valve member, under two sense of rotation of eccentric shaft 13, relief opening 43 and intakeport 46 can both be drawn into fluid in the cylinder 21 and with fluid and discharge in cylinder 21, and valve member is used for controlling intakeport 46.Relief opening 43 forms on upper bearing 24 and near slide plate 23, they correspond respectively to turning clockwise of eccentric shaft 13 or be rotated counterclockwise and play a role.The situation of intakeport 46 and relief opening 43 are similar, and they form on lower bearing 25, and they correspond respectively to turning clockwise of eccentric shaft 13 or be rotated counterclockwise and play a role, certain angle of being separated by between them simultaneously.Valve member is installed between lower bearing 25 and the cylinder 21, can open some in the intakeport 46 selectively according to the sense of rotation of eccentric shaft 13.As everyone knows, in rotary compressor, compression realizes between intakeport 46 and corresponding relief opening 43, since between the intakeport 46 at a distance of certain interval, therefore in fluid chamber, the space that is used to compress can be different along with the sense of rotation of eccentric shaft 13, can obtain two kinds of different compression volumes thus.But volume-variable portion 30 is an example only, as long as capacity is changed with sense of rotation, the volume-variable portion of any other structure can be as the volume-variable portion in the compressor of the present invention.

In addition, in the process of driven compressor, the stator 11 of motor, rotor 12, eccentric shaft 13 and roll the ring 22 these class mechanical parts be in the high-speed motion, and, because these motions mainly are in the horizontal direction rotations, so the vibration of the compressor integral body that these motions are caused is based in the horizontal direction vibration.

Shown in Fig. 1 c, has a leg-of-mutton triangle dish 32 for 1 time at compressor case, each drift angle of triangle dish 32 all is provided with a circular hole, these three circular holes are stuck in the draw-in groove on three damping pad 33 tops, and bolt 34 is being set in the damping pad 33, bolt 34 tops cover upper gasket 36, nut 36 is screwed on the bolt 34 and pushes down packing ring 36, damping pad 33 is arranged on the base plate 37 of compressor, and sometimes, the bottom of bolt 34 is welded on the base plate 37.Damping pad 33 is by plastic material, makes as rubber, is essentially cylindrical body, and bottom and top are the plane.Except above-mentioned draw-in groove, have some water jackets on the external diameter often, be provided with rib between water jacket,, therefore, be not difficult to find out that the damping pad 33 of prior art compressor is to serve as main function with the vibration that weakens Vertical direction to increase the intensity of its antivibration.

The oblique damping pad of compressor of the present invention as shown in Figure 6, this compressor comprises cylinder, rolls ring, eccentric shaft and slide plate, the drift angle of the triangle dish under the compressor is equipped with damping pad, these damping pad 33 inclination several angles are installed, the center of gravity that each damping pad 33 axis is all aimed at compressor, three damping pad 33 tapered layouts so, directly support the center of gravity of compressor on the direction that tilts.

And the drift angle of triangle dish 32 and the identical angle of damping pad 33 inclinations like this, are convenient to the angle of inclination that fitting operation also is easy to guarantee damping pad 33.

Simultaneously, the base plate 37 of compressor place air-conditioning and the identical angle of damping pad 33 inclinations had both made compressor can wholely not move, and had reduced mounting hardness again.

Simultaneously, because the base plate of air-conditioning is relatively big, it is created have three inclined-planes, technical have a certain degree of difficulty, so, be provided with fixing device specially between the base plate 37 of compressor place air-conditioning and the damping pad 33, so, the original appearance of base plate 37 that had both kept air-conditioning can realize firmly fixing the purpose of compressor again.

As shown in Figure 7, the oblique damping pad of another kind of compressor of the present invention, be still that compressor comprises cylinder, rolls ring, eccentric shaft and slide plate, the drift angle of the triangle dish under the compressor is equipped with damping pad, the axis tilt of this damping pad 33 is in the Vertical direction several angle, the center of gravity that makes each damping pad 33 axis all aim at compressor, three damping pad 33 tapered layouts, so under the situation that does not increase miscellaneous part, also can firmly realize the inclination in the axle center that damping pad 33 is stressed.Certainly, the certain angle of drift angle inclination of the triangle dish 32 of damping pad 33 is installed, also realizes easily.

Because at present compressor base angle is installed and mainly taked three damping pad triangular layout, so the present invention is primarily aimed at this structure and improves, and as shown in Figure 5, with the damping pad a angle that tilts, aims at the center of gravity o of compressor, makes three tapered layouts of damping pad.

When being subjected to transverse force F1, it is stressed as follows:

F1+G＝F＝-F′＝-kΔx

Be that compressor is subjected to any direction excitation time, system is stressed all to reach balance.

$\left\{\begin{array}{c}\text{\ΣF}\left(x\right)=0\\ \mathrm{\ΣF}\left(y\right)=0\\ \mathrm{\ΣF}\left(z\right)=0\end{array}\right.$

Center of gravity triangle layout makes the effect of damping pad be not fully exerted, and helps improving the stability of compressor, and the ability of opposing external impacts, the Security that improves system.

As shown in Figure 6, with compressor base plate and the air-conditioning base plate a angle that all is inclined upwardly, connect by bolton then, a angle is the angle between damping pad center line and the vertical center line of compressor.The compressor center of gravity can be determined by test, can calculate a angle by the triangle relation between damping pad and center of gravity again.

Can effectively reduce the vibration of transverse compression machine by the present invention, improve the stability of compressor, actual use value is arranged.

Claims (6)

1. the oblique damping pad of a compressor, described compressor comprises cylinder, rolls ring, eccentric shaft and slide plate, the drift angle of the triangle dish under the compressor is equipped with damping pad, it is characterized in that: described damping pad (33) inclination several angle is installed, with the center of gravity that each damping pad (33) axis is all aimed at compressor, the tapered layout of three damping pads (33).

2. the oblique damping pad of compressor according to claim 1 is characterized in that: the drift angle of described triangle dish (32) and the identical angle of damping pad (33) inclination.

3. according to the oblique damping pad of claim 1 and 2 any one described compressor, it is characterized in that: the base plate (37) of described compressor place air-conditioning and the identical angle of damping pad (33) inclination.

4. according to the oblique damping pad of claim 1 and 2 any one described compressor, it is characterized in that: be provided with fixing device specially between the base plate (37) of described compressor place air-conditioning and the damping pad (33).

5. the oblique damping pad of a compressor, described compressor comprises cylinder, rolls ring, eccentric shaft and slide plate, the drift angle of the triangle dish under the compressor is equipped with damping pad, it is characterized in that: the axis tilt of described damping pad (33) is in the Vertical direction several angle, and the bottom surface of damping pad (33) is a level, thereby the center of gravity that makes each damping pad (33) axis all aim at compressor, the tapered layout of three damping pads (33).

6. the oblique damping pad of compressor according to claim 5 is characterized in that: the certain angle of drift angle inclination of described triangle dish (32).

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