CN100398835C - Noise reducing device for rotary compressor - Google Patents

Noise reducing device for rotary compressor Download PDF

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Publication number
CN100398835C
CN100398835C CNB03129880XA CN03129880A CN100398835C CN 100398835 C CN100398835 C CN 100398835C CN B03129880X A CNB03129880X A CN B03129880XA CN 03129880 A CN03129880 A CN 03129880A CN 100398835 C CN100398835 C CN 100398835C
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CN
China
Prior art keywords
mentioned
bearing
noise
rotary compressor
reducing
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Expired - Fee Related
Application number
CNB03129880XA
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Chinese (zh)
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CN1548770A (en
Inventor
郑采锡
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LG Electronics Tianjin Appliances Co Ltd
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LG Electronics Tianjin Appliances Co Ltd
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Priority to CNB03129880XA priority Critical patent/CN100398835C/en
Publication of CN1548770A publication Critical patent/CN1548770A/en
Application granted granted Critical
Publication of CN100398835C publication Critical patent/CN100398835C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The present invention relates to a noise-reducing device of a rotary compressor, particularly to a noise-reducing device of a rotary compressor. A compressor can compress sucked refrigerant with certain pressure, the noise-reducing device is used for covering a discharge port of an upper bearing for discharging compressed refrigerant in order to reduce noise generated when the refrigerant is discharged. The noise-reducing device is characterized in that a key way is arranged in the edge of the noise-reducing contacted with the upper bearing, and the key way can enhance the tightness between the upper bearing and the noise-reducing device. The noise-reducing device of a rotary compressor having the structure has the effects for preventing the refrigerant between the upper bearing and the noise-reducing device from leakage and reducing noise.

Description

The noise reducing apparatus of rotary compressor
Technical field
The present invention relates to a kind of noise reducing apparatus of rotary compressor.
Background technique
Generally, rotary compressor is to rely on the interior rotor of rotor to come the mechanical device of compression refrigerant gas.Specifically: be arranged on the bent axle bottom off-centre roller along cylinder internal surface do revolution, spinning motion, come compression refrigerant.The liquid container that is installed on the above-mentioned hermetic type compressor has the centrifugation of the refrigerant that is drawn into above-mentioned rotary compressor being carried out separating liquid shape refrigerant and impurity thereof.
The rotary compressor with above-mentioned functions by the applicant Lejin Electronic and Electric Appliance Co Ltd (Tianjin) formerly produces as shown in Figure 1, has following structure: the certain volume space of seal container 1 inner formation, and have suction pipe 14 and discharge tube 15; Above-mentioned seal container 1 inside is provided with the motor drive mechanism parts, and above-mentioned motor drive mechanism parts comprise stator 2 and rotor 3; Running shaft 4 is pressed on the above-mentioned rotor, formation eccentric part 4a below it.
Compressing mechanism comprises cylinder 8, rolling piston 9, blade (VANE) (not showing in the accompanying drawing).
The eccentric part 4a that holds above-mentioned running shaft 4 in the above-mentioned cylinder 8, and lived by bolt with upper bearing, lower bearing; Above-mentioned rolling piston is inserted on the eccentric part 4a of above-mentioned running shaft 4, and tangent with the internal surface of above-mentioned cylinder 8, does rotation or revolution motion; The outer peripheral surface of above-mentioned blade and above-mentioned rolling piston 9 is tangent, and above-mentioned cylinder 8 inside are separated to form high-pressure section and low-pressure section.Above-mentioned blade is done flexible straight line motion.
The low-pressure section of above-mentioned cylinder 8 is formed with the suction port 8b that cold media air is imported above-mentioned cylinder 8 inside, and above-mentioned suction port 8b is connected by suction pipe 14 with the liquid container 13 of the side that is arranged on above-mentioned seal container 1.
The high-pressure section that is separated to form by above-mentioned blade in the cylinder 8 a side forms the tap hole 8a that discharges compressed cold media air, the exhaust passage 5a that the side formation of above-mentioned upper bearing 5 is connected with above-mentioned tap hole.
Above-mentioned upper bearing 5 tops are provided with expulsion valve 10 and stop component 11: upper bearing 5 tops surpass certain pressure, and expulsion valve 10 is just opened exhaust passage 5a; The opening state of the above-mentioned expulsion valve 10 of stop component 11 controls.
In addition, the top of above-mentioned upper bearing 5 is provided with the baffler 20 that can reduce the noise that produces owing to discharge gas.
Above-mentioned baffler 20 has following structure as shown in Figures 2 and 3: central position forms through hole 26, the end that can insert above-mentioned upper bearing 5; The attachment hole 23 that connects above-mentioned upper bearing 5; Form the body 21 of lid (CAP) shape of inner space; Be discharged to each resonant chamber 22 that the passage by different volumes that the refrigerant of above-mentioned body 21 inside reduces gradually along with mobile noise forms; Refrigerant by above-mentioned resonant chamber 22 is discharged to the exhaust port 24 of above-mentioned seal container; Cover the contact segment 25 that above-mentioned upper bearing has certain altitude.
Rotary compressor working principle with said structure is as follows: above-mentioned rotor 3 is along with the supply of power supply, rotate above-mentioned running shaft 4, rotation along with above-mentioned running shaft 4, be installed on the above-mentioned eccentric part 4a above-mentioned rolling piston 9 with above-mentioned blade state of contact under rotate, the rotation of above-mentioned running shaft 4 and rolling piston 9 makes from the refrigerant of the low-temp low-pressure of liquid container 13 suctions and is drawn into above-mentioned cylinder 8 inside by above-mentioned suction pipe 14 with suction port 8b, and is compressed into the refrigerant of High Temperature High Pressure.
In above-mentioned cylinder 8, refrigerant compression back pressure surpasses the words of certain value, above-mentioned expulsion valve 10 will be opened, the refrigerant of compressed High Temperature High Pressure is by above-mentioned exhaust port 8a and discharge through hole 5a, be discharged to the inside of above-mentioned seal container 1 through baffler 20, the discharge tube 15 on the top of the refrigerant of discharge by being formed on above-mentioned seal container 1 is discharged to outside the container.
But above-mentioned existing rotary compressor has following shortcoming.
Because when the part of above-mentioned upper bearing 5 combines with above-mentioned baffler, because the shape of the contact segment 25 that is connected with the part of upper bearing 5 difference to some extent, so can produce the slit during connection.Because this slit, the refrigerant that is compressed into High Temperature High Pressure can not be by the resonant chamber 22 that is formed with passage, but misses from the slit of 5 of above-mentioned contact segment 25 and upper bearings, thereby can not reduce the noise of above-mentioned baffler 20, and the performance that reduces noise is reduced.
Summary of the invention
In order to solve the problems of the technologies described above, the purpose of this invention is to provide a kind of noise reducing device: improve engaging between upper bearing and baffler, improve seal, improve noise and reduce performance with rotary compressor of following effect.
In order to realize purpose of the present invention, the invention provides a kind of noise reducing device of rotary compressor, in rotary compressor, in cylinder, the refrigerant that sucks is compressed to certain pressure, baffler covers the exhaust port of the upper bearing of discharging refrigerant, is used for reducing the discharge noise; At above-mentioned baffler and the contacted contact segment processing of above-mentioned covering upper bearing opening slot, to improve the seal of above-mentioned upper bearing and baffler.
In addition, at least one above-mentioned opening slot in marginating compartment one segment distance, the formation of above-mentioned contact segment with having the certain width and the degree of depth.
The noise reducing apparatus of rotary compressor provided by the invention has following effect: when upper bearing is installed baffler, the distortion of the baffler that produces because of the difference of shape is limited in the terminal opening slot that forms of contacting part, it is not exclusively mobile to have prevented that the coolant leakage that is caused by the distortion of above-mentioned baffler of the prior art from causing, has reached the effect that reduces noise.
Description of drawings
Fig. 1 demonstrates the sectional arrangement drawing of the rotary compressor of existing technology;
Fig. 2 demonstrates the back side (backsight) figure of the baffler of the rotary compressor that is arranged on Fig. 1;
Fig. 3 demonstrates side (left side is looked) figure of the baffler of the rotary compressor that is arranged on Fig. 1;
Fig. 4 demonstrates the sectional arrangement drawing of the rotary compressor that baffler is installed of one embodiment of the invention;
Fig. 5 demonstrates the back side (backsight) figure that one embodiment of the invention are installed in the baffler of Fig. 4 rotary compressor;
Fig. 6 demonstrates side (left side is looked) figure that one embodiment of the invention are installed in the baffler of Fig. 4 rotary compressor.
The critical piece description of reference numerals
1: seal container 2: stator
3: rotor 4: running shaft
4a: eccentric part 5: upper bearing
5a: exhaust passage 6. lower bearings
7: bolt 8: cylinder
8a: tap hole 8b: suction port
9: rolling piston 10: discharge valve
11: stop component 13: liquid container
14: suction pipe 15: discharge tube
120: baffler 121: body
122: resonant chamber 123: attachment hole
124: exhaust port 125: contact segment
125a: opening slot 126: hole
Embodiment
With reference to the accompanying drawings, describe the present invention in detail.Parts same as the prior art adopt identical reference character.
As shown in Figure 4, the rotary compressor that the noise reducing device of rotary compressor is installed in the present invention has and has as lower member:
The certain volume space of seal container 1 inner formation, and have suction pipe 14 and discharge tube 15; Above-mentioned seal container 1 inside is provided with the motor drive mechanism parts, and above-mentioned motor drive mechanism parts comprise stator 2 and rotor 3; Be pressed into the running shaft 4 on the internal diameter of above-mentioned rotor, form eccentric part 4a below it.
Compression mechanism part comprises cylinder 8, rolling piston 9, blade (VANE) (not shown).
The eccentric part 4a that holds above-mentioned running shaft 4 in the above-mentioned cylinder 8, and fixed by bolt 7 with upper bearing 5, lower bearing 6; Above-mentioned rolling piston is inserted on the eccentric part 4a of above-mentioned running shaft 4, and tangent with the internal surface of above-mentioned cylinder 8, does rotation or revolution motion; The outer peripheral surface of above-mentioned blade and above-mentioned rolling piston 9 is tangent, and above-mentioned cylinder 8 inside are separated into high-pressure section and low-pressure section.Above-mentioned blade is done flexible straight line motion.
The low-pressure section of above-mentioned cylinder 8 forms the suction port 8b that cold media air is imported above-mentioned cylinder 8 inside, and above-mentioned suction port 8b is connected by suction pipe 14 with liquid container (ACCUMULATOR) 13 of the side that is arranged on above-mentioned seal container 1.
One side of the cylinder 8 of the high-pressure section that is formed by above-mentioned blade separation forms the tap hole 8a that discharges compressed cold media air, and a side of above-mentioned upper bearing 5 forms the exhaust passage 5a that is connected with above-mentioned tap hole.
The top of above-mentioned upper bearing 5 is provided with expulsion valve 10 and stop component 11: upper bearing 5 tops surpass certain pressure, and expulsion valve 10 is just opened exhaust passage 5a; The opening state of the above-mentioned expulsion valve 10 of stop component 11 controls.
In addition, the top of above-mentioned upper bearing 5 combines the baffler 120 of reduction by the noise of discharging the gas generation.
Above-mentioned baffler 120 is as Fig. 5 and shown in Figure 6ly have a following structure: central position forms the hole 126 of the end that can insert above-mentioned upper bearing 5; The attachment hole 123 that connects above-mentioned upper bearing 5; Form the body 121 of lid (CAP) shape of inner space; Be discharged to each resonant chamber 122 that the passage by different volumes that the refrigerant of above-mentioned body 121 inside reduces gradually along with mobile noise forms; Refrigerant by above-mentioned resonant chamber 122 is discharged to the exhaust port 124 of above-mentioned seal container; Cover the contact segment 125 of above-mentioned upper bearing certain altitude, form a spacing certain distance at the edge of above-mentioned contact segment 125 at least and have certain width and dark opening slot 125a.
Noise reducing device one embodiment's of rotary compressor of the present invention operational effect is described in detail as follows.
Above-mentioned cylinder 8 and above-mentioned rolling piston 9 compression refrigerants, refrigerant compression back pressure surpasses the words of certain value, above-mentioned expulsion valve 10 will be opened, the refrigerant of compressed High Temperature High Pressure is by above-mentioned tap hole 8a and exhaust hole 5a, be discharged to the inside of above-mentioned seal container 1 through baffler 120, the discharge tube 15 on the top of the refrigerant of discharge by being formed on above-mentioned seal container 1 is discharged to outside the container.
The end of the above-mentioned contact segment 125 of above-mentioned baffler 120 forms opening slot 125a at this moment, when above-mentioned contact segment 125 is combined closely with the part of above-mentioned upper bearing 5, the distortion that produces because of shape difference between above-mentioned contact segment 125 and the above-mentioned upper bearing 5 does not take place on the whole at baffler 120, only be limited on the above-mentioned opening slot 125a, the slit does not take place in the anastomosis part, and then seal has improved.
So, the refrigerant of the High Temperature High Pressure of being compressed by cylinder 8 is by forming the above-mentioned resonant chamber 122 of passage, and noise will reduce, and be discharged to the inside of seal container again by above-mentioned tap hole 124, be discharged to the outside by above-mentioned discharge tube 15, reduce the noise that causes because of coolant leakage.

Claims (2)

1. a rotary compressor noise reducing apparatus in rotary compressor, is compressed to certain pressure to the refrigerant that sucks in cylinder, and baffler covers the exhaust port of upper bearing, and this exhaust port discharge refrigerant is used for reduction and discharges noise; It is characterized in that:
At above-mentioned baffler and the contacted contact segment processing of above-mentioned covering upper bearing opening slot, to improve the seal of above-mentioned upper bearing and baffler.
2. rotary compressor noise reducing apparatus according to claim 1 is characterized in that:
At least one above-mentioned opening slot in marginating compartment one segment distance, the formation of above-mentioned contact segment with having the certain width and the degree of depth.
CNB03129880XA 2003-05-22 2003-05-22 Noise reducing device for rotary compressor Expired - Fee Related CN100398835C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNB03129880XA CN100398835C (en) 2003-05-22 2003-05-22 Noise reducing device for rotary compressor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNB03129880XA CN100398835C (en) 2003-05-22 2003-05-22 Noise reducing device for rotary compressor

Publications (2)

Publication Number Publication Date
CN1548770A CN1548770A (en) 2004-11-24
CN100398835C true CN100398835C (en) 2008-07-02

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Family Applications (1)

Application Number Title Priority Date Filing Date
CNB03129880XA Expired - Fee Related CN100398835C (en) 2003-05-22 2003-05-22 Noise reducing device for rotary compressor

Country Status (1)

Country Link
CN (1) CN100398835C (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1257164A (en) * 1998-12-17 2000-06-21 Lg电子株式会社 Silencer for rotary compressor
US6312233B1 (en) * 1999-02-26 2001-11-06 Lg Electronics Inc. Rotary compressor
CN1363777A (en) * 2001-12-14 2002-08-14 乐金电子(天津)电器有限公司 Silencer of exhaust valve for sealed rotary compressor
CN1093605C (en) * 1996-07-11 2002-10-30 Lg电子株式会社 Noise reducing structure for hermetically sealed compressor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1093605C (en) * 1996-07-11 2002-10-30 Lg电子株式会社 Noise reducing structure for hermetically sealed compressor
CN1257164A (en) * 1998-12-17 2000-06-21 Lg电子株式会社 Silencer for rotary compressor
US6312233B1 (en) * 1999-02-26 2001-11-06 Lg Electronics Inc. Rotary compressor
CN1363777A (en) * 2001-12-14 2002-08-14 乐金电子(天津)电器有限公司 Silencer of exhaust valve for sealed rotary compressor

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