WO2013165157A1

WO2013165157A1 - Scroll compressor

Info

Publication number: WO2013165157A1
Application number: PCT/KR2013/003736
Authority: WO
Inventors: 이건호; 구인회; 한영창; 권윤기
Original assignee: 학교법인 두원학원; 주식회사 두원전자
Priority date: 2012-05-03
Filing date: 2013-04-30
Publication date: 2013-11-07
Also published as: CN104411974B; CN104411974A; KR101431183B1; KR20130123643A

Abstract

A scroll compressor of the present invention comprises: a main housing having a suction port for sucking a refrigerant from the outside; a driving unit provided inside the main housing for generating rotational power; a scroll compression unit comprising a rotational scroll rotated by a rotational power transmitted through the driving unit and having a spiral rotational wrap, and a fixing scroll coupled with the main housing so as to have a fixed location and including a spiral fixing wrap to be engaged with the spiral rotational wrap; and an outlet housing coupled with the main housing and having an inlet port for receiving the high-pressure refrigerant compressed at the scroll compression unit, and an outlet port for discharging the refrigerant received through the inlet port. The outlet housing comprises: an outlet path spirally formed from an inlet and connected to the outlet port formed on an outer circumference of the outside thereof; a connective path formed along the circumferential direction corresponding to the path direction of the outlet path and connected to the outlet path; and a resonance chamber connected to the outlet path through the connective path, and having an expanded volume in comparison with the volume of the connective path so as to reduce noise and pulsation of the refrigerant discharged from the scroll compression unit.

Description

Scroll compressor

The present invention relates to a scroll compressor, and more particularly to a scroll compressor that can reduce the noise and pulsation of the discharged fluid.

In general, the scroll compressor is a device that performs compression through the relative movement of the fixed scroll consisting of the scroll wrap and fixed regardless of the rotation of the drive shaft, and the turning scroll to rotate in accordance with the rotation of the drive shaft.

As such a scroll compressor, a scroll compressor having a back pressure chamber sealing structure of Korean Patent No. 0912515 includes a housing, a drive unit for generating rotational force, an intake unit through which fluid is sucked from the outside, and a fluid sucked from the suction unit. A scroll compressor comprising a fixed scroll composed of a spiral scroll wrap, a swing scroll formed with a spiral scroll wrap coupled with the scroll wrap of the fixed scroll, and a high pressure fluid compressed by the scroll compressor. It consists of the structure containing the discharge port discharged.

However, the conventional scroll compressor has a problem of causing discomfort and performance deterioration due to noise generation because the noise and pulsation due to the discharged fluid are larger than those of the swash plate type compressor.

In addition, the conventional scroll compressor has a problem of causing efficiency and oil shortage due to excessive oil discharge, causing a decrease in reliability. Alternatively, a separate oil separator having a complicated structure may be provided to reduce the oil discharge amount. However, this also had a problem that is not economical due to the increase in manufacturing cost.

The present invention is to reduce the noise and pulsation of the discharged fluid to prevent discomfort or performance degradation due to noise, and to remove the oil contained in the fluid by reflowing the scroll compressor that can prevent the degradation of reliability due to lack of oil The purpose is to provide.

The present invention, in order to achieve the above object, the main housing having a suction port in which the refrigerant is sucked from the outside; A driving unit provided inside the main housing to generate rotational force; A rotating scroll having a swivel movement by the rotational force transmitted through the driving unit and having a helical swivel wrap, and having a helical fixed wrap that is fixed in position by engaging with the main housing and engaged with the swivel wrap A scroll compression unit including a scroll; And a discharge housing coupled to the main housing and having an inlet port through which the high pressure refrigerant compressed by the scroll compression unit flows, and a discharge port through which the refrigerant flowed from the inlet port is discharged. A discharge flow path formed to draw a spiral from an inlet and communicating with the discharge port formed on an outer circumference, and formed along a circumferential direction corresponding to the flow path direction of the discharge flow path, and a communication path communicated with the discharge flow path; A resonator chamber in communication with the discharge passage by the communication passage and having a resonance chamber having an expanded volume than the communication passage so as to reduce noise or pulsation of the refrigerant discharged from the scroll compression portion. Provide a scroll compressor.

The scroll compressor according to the present invention provides the following effects.

First, since the noise chamber and the pulsation of the discharged fluid is provided with the resonance chamber, it is possible to prevent discomfort or performance degradation due to noise.

Second, it is possible to prevent the deterioration of reliability due to oil shortage by separating and reflowing the oil contained in the fluid.

Third, since there is no change in the size of the passage passage cross-sectional area of the discharge passage, the discharge pressure loss can be reduced.

1 is a front sectional view showing a scroll compressor according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view taken along the line II-II of FIG. 1.

3 is a cross-sectional view illustrating a case in which resonance chambers are provided at both sides of the discharge passage of FIG. 2.

4 is a cross-sectional view illustrating a case in which a partition is provided in the resonance chamber of FIG. 2.

FIG. 5 is a cross-sectional view illustrating a case in which the oil reservoir is provided in the resonance chamber of FIG. 4.

6 is a cross-sectional view illustrating a case in which a partition is provided in the resonance chamber of FIG. 3.

FIG. 7 is a cross-sectional view illustrating a case in which the oil reservoir is provided in the resonance chamber of FIG. 6.

8 to 10 are cross-sectional views illustrating various embodiments of the communication path of FIG. 2.

The scroll compressor of the present invention includes a main housing having a suction port through which refrigerant is sucked from the outside; A driving unit provided inside the main housing to generate rotational force; A rotating scroll having a swivel movement by the rotational force transmitted through the driving unit and having a helical swivel wrap, and having a helical fixed wrap that is fixed in position by engaging with the main housing and engaged with the swivel wrap A scroll compression unit including a scroll; And a discharge housing coupled to the main housing and having an inlet port through which the high pressure refrigerant compressed by the scroll compression unit flows, and a discharge port through which the refrigerant flowed from the inlet port is discharged, wherein the discharge housing comprises: A discharge flow path formed to draw a spiral from an inlet and communicating with the discharge port formed on an outer circumference, and formed along a circumferential direction corresponding to the flow path direction of the discharge flow path, and a communication path communicated with the discharge flow path; And a resonator chamber in communication with the discharge passage by the communication passage and having a resonance chamber having an enlarged volume than the communication passage so as to reduce noise or pulsation of the refrigerant discharged from the scroll compression portion. .

Here, the resonance chamber may be disposed on one side or both sides of the discharge passage. The resonance chamber may be formed in parallel with the flow direction of the discharge passage.

A plurality of communication paths may be arranged to be spaced apart from each other, and each of the communication paths preferably has flow paths and cross-sectional areas of different sizes.

In addition, the communication path may be a non-smooth surface including a polygonal or triangular cross-section through the flow passage, or a smooth surface including a circular or oval cross-section through the flow passage.

The resonance chamber may further include one or a plurality of partition walls for dividing the resonance chamber into a plurality, and the partition wall may be formed with one or a plurality of through holes penetrating the resonance chamber. In addition, the oil separated from the refrigerant on the discharge passage flows into the pool further comprises a reservoir, and the scroll compression unit, the oil hole in communication with the reservoir to allow the oil of the reservoir may be formed.

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

1 is a front sectional view showing a scroll compressor according to an embodiment of the present invention, Figure 2 is a cross-sectional view taken along the line II-II of Figure 1, Figure 3 is a case where the resonance chamber is provided on both sides of the discharge passage of FIG. It is sectional drawing which shows. 4 is a cross-sectional view illustrating a case in which the resonance chamber of FIG. 2 includes a partition wall, FIG. 5 is a cross-sectional view illustrating a case in which the oil reservoir is provided in the resonance chamber of FIG. 4, and FIG. It is sectional drawing which shows the case where a partition is provided. FIG. 7 is a cross-sectional view illustrating a case in which the resonance chamber of FIG. 6 includes a oil storage part, and FIGS. 8 to 10 are cross-sectional views illustrating various embodiments of the communication path of FIG. 2.

First, referring to FIG. 1, a scroll compressor 600 according to an exemplary embodiment of the present invention includes a main housing 100, a driving unit 200, a scroll compression unit 300, and a discharge housing 400a. do.

The main housing 100 is composed of a first housing 110 and a second housing 120, the first housing 110 accommodates the drive unit 200 therein, the refrigerant is sucked from the outside A suction port (not shown) is provided. The second housing 120 is coupled to the rear of the first housing 110 (right side in the drawing) and accommodates the scroll compression unit 300 therein.

The drive unit 200 is provided in the main housing 100 to generate a rotational force, the annular stator 210 and the rotor 220 which is rotatably disposed and rotated inside the stator 210. And a rotating shaft 230 that is coupled to the rotor 220 to rotate in conjunction with the rotor 220.

The scroll compression unit 300 is composed of a turning scroll 310 and the fixed scroll (320). The pivoting scroll 310 is connected to the rotary shaft 230 to rotate by the rotational force transmitted through the rotary shaft 230, and has a spiral swing wrap 312.

The fixed scroll 320 is coupled to the

main housing

100 and 100 to fix its position, and forms a compression chamber between the pivoting wrap 312 and the pivoting wrap 310 during the pivoting movement of the pivoting scroll 310. It is provided with a helical fixed wrap 322 that meshes with the turning wrap 312 so as to engage, and the outlet 330 through which the compressed fluid flows is formed. Meanwhile, the fixed scroll 320 has an oil hole 340 through which the oil 1 of the discharge housing 400a flows, and a detailed description thereof will be described later.

Meanwhile, the main housing 100, the driving unit 200, and the scroll compression unit 300 of the scroll compressor 600 may have various structures, and the main housing 100 and the driving unit 200 may be applied. And a detailed configuration of the scroll compression unit 300 will be omitted since it corresponds to the configuration of a known scroll compressor.

The discharge housing 400a is coupled to the main housing 100 and includes a discharge port 402 through which the refrigerant introduced from the outlet 330 is discharged, and the outlet 330 and the discharge port 402. ), A discharge passage 410 is formed. Here, the discharge housing 400a is provided with a check valve 420 for selectively opening and closing the outlet 330, it is preferable that such a check valve 420 is applied to a metered discharge valve (Dis. Valve) It is not limited to this.

2, the discharge passage 410 is formed in communication with the discharge port 402 provided on the outer circumference from the outlet 330 formed in the center, in detail from the outlet 330 It is formed while drawing a spiral in the circumferential direction toward the discharge port 402. In this case, the outlet 330 is shown in the case formed in the center of the discharge housing 400a as an example, which is an embodiment if the discharge passage 410, 411 can flow while drawing a spiral Of course, it can be formed in a variety of positions.

Looking at the discharge housing 400a in detail, the discharge housing 400a includes a resonator chamber 500 formed along the circumferential direction in parallel with the flow path direction of the discharge flow path 410.

The resonance chamber 500 serves to reduce noise or pulsation of the refrigerant discharged from the scroll compression unit 300, and communicates with the discharge passage 410 and the communication passage 510 and the communication passage ( The resonance chamber 501 communicates with the discharge passage 410 by 510 and has an extended volume than the communication passage 510. Here, the principle of noise and pulsation reduction of the resonance chamber 500 is similar to the Helmholtz resonator principle, a detailed description thereof will be omitted.

On the other hand, the resonance chamber 500, the oil (1) separated from the refrigerant on the discharge passage 410 flows into the reservoir further comprises a reservoir (530). The oil storage part 530 is a portion in which oil 1 contained in the discharged fluid is separated by centrifugal force, and the oil 1 thus separated is introduced and accumulated through the communication path 510. Accordingly, the scroll compression unit 300 has an oil hole 340 communicating with the oil storage part 530 so that the oil 1 of the oil storage part 530 flows therein, and the oil hole ( 340 is formed in the fixed scroll in the scroll compression unit 300.

Here, the oil storage part 530 is provided below the discharge housing 400a where the oil 1 accumulates due to gravity, so that the oil hole 340 also corresponds to the oil storage part 530. It is formed below the scroll compression unit 300.

As such, the scroll compressor 600 separates, collects, and resuppresses the oil 1 included in the refrigerant through the communication path 510 and the oil storage part 530, thereby reducing the amount of oil discharged and causing oil shortage. Due to the reduction in reliability of the scroll compressor 600 can be prevented, it is economical because the amount of oil consumption can be reduced.

Meanwhile, referring to FIG. 3, the resonance chamber 500 may be disposed on both sides of the discharge passage 410 in consideration of the degree of noise and pulsation to be reduced and the fluid characteristics on the discharge passage 410. Can be.

In addition, the resonance chamber 500 has been shown to be parallel to the flow path direction of the discharge passage 410, which is a preferred embodiment if various arrangements can be reduced if the noise and pulsation of the discharge passage 410 can be reduced Of course it is possible.

Referring to FIG. 4, the resonance chamber 500 further includes one or a plurality of partitions 520 dividing the resonance chamber 501 into a plurality. In the drawing, the partition wall 520 is provided with a pair to divide the resonance chamber 501 into three

resonance chambers

504, 505, and 506, but this is one embodiment of the noise of the fluid on the discharge passage 410. And the number and arrangement position of the corresponding to the pulsating frequency can be varied, of course.

On the other hand, referring to Figure 5, the partition 520, the through-holes 522 through which the resonance chamber (504, 505, 506) to communicate with each other is formed through. The through hole 522 is to allow the oil 1 flowing through the communication path 510 to flow into the oil storage part 530 formed at the lower side of the resonance chamber 500. It is preferable to be biased in the direction of the discharge housing 400d so as to easily flow to the oil storage part 530, but is not limited thereto.

Referring to FIG. 6, the discharge housing 400e includes the resonance chamber 500 at both sides of the discharge passage 410, and includes partition walls 520 in the resonance chamber 500. A plurality of

resonance chambers

507, 508, 509 are provided on both sides of the discharge passage 410.

In addition, referring to FIG. 7, the discharge housing 400f may allow the oil 1 of each of the

resonance chambers

507, 508, 509 to easily flow into the oil storage part 530 in the partition 520 as compared with FIG. 6. The through hole 522 is formed. Here, a detailed description of the structure of the

discharge housings

400e and 400f of FIGS. 6 and 7 is compared with that of the resonance housing 500 of the

discharge housings

400c and 400d of FIGS. 4 and 5. Other configurations except the layout structure correspond to each other and will be omitted.

Furthermore, the

discharge housings

400a, 400b, 400c, 400d, 400e, and 400g may have different sizes of the

resonance chambers

501, 502, 504, 505, 506, 507, 508, 509 according to their design.

On the other hand, with respect to the communication path 510, the communication path 510 is disposed in the resonance chamber 500, a plurality of spaced apart from each other at regular intervals in the flow direction of the discharge passage 410, The spacing at this time can vary depending on the design.

In this case, each of the communication passages 510 may have flow passages and cross-sectional areas having different sizes in consideration of flow characteristics of the discharge passage 410, and may have different passage lengths.

8 and 9, the

communication paths

510 and 511 may be non-smooth in the passage passage cross section including a rectangle or a triangle, or as shown in FIG. 10, the communication passage 512 may have a circular passage passage cross section. Or it may be a smooth surface including an oval, it can also be selectively applied according to the flow characteristics and the desired resonance efficiency of the discharge passage (410).

As described above, the scroll compressor 600 includes a resonance chamber 500 in the

discharge housings

400a, 400b, 400c, 400d, 400e, and 400g, and noise of the fluid flowing out of the scroll compression unit 300. And not only can effectively reduce the pulsation, it is also easy to apply to a vehicle compressor requiring a quiet.

In addition, the scroll compressor 600 can reduce the discharge pressure loss because there is no change in the size of the passage passage cross-sectional area of the discharge passage 410, and also the oil (1) from the fluid flowing on the discharge passage 410 Re-supply after re-supplying can prevent reliability deterioration due to oil shortage.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

The present invention can be used in the industry related to the scroll compressor for a vehicle.

Claims

A main housing having a suction port through which refrigerant is sucked from the outside;

A driving unit provided inside the main housing to generate rotational force;

A rotating scroll having a swivel movement by the rotational force transmitted through the driving unit and having a helical swivel wrap, and having a helical fixed wrap that is fixed in position by engaging with the main housing and engaged with the swivel wrap A scroll compression unit including a scroll; And

And a discharge housing coupled to the main housing and having an inlet port through which the high pressure refrigerant compressed by the scroll compression unit flows, and a discharge port through which the refrigerant flowed from the inlet port is discharged.

The discharge housing,

A discharge passage formed to draw a spiral from the inlet and communicating with the discharge port formed on an outer circumference;

Noise or pulsation of the refrigerant formed along the circumferential direction corresponding to the flow path direction of the discharge flow path, and communicating with the discharge flow path, and communicating with the discharge flow path by the communication path and discharged from the scroll compression portion. And a resonator chamber having a resonator chamber having an enlarged volume than the communication path so as to reduce the pressure.
The method according to claim 1,

The resonance chamber is arranged on one side or both sides of the discharge passage.
The method according to claim 1 or 2,

The resonance chamber is formed in parallel with the flow path direction of the discharge passage.
The method according to claim 1 or 2,

The communication path, the scroll compressor is arranged a plurality of spaced apart from each other.
The method according to claim 4,

And each of the communication passages has flow passages and cross-sectional areas of different sizes.
The method according to claim 1 or 2,

The communication passage is a scroll compressor, the passage passage is a non-smooth surface containing a square or a triangle.
The method according to claim 1 or 2,

The communication passage is a scroll compressor, wherein the passage passage is a smooth surface including a circular or oval.
The method according to claim 1 or 2,

The resonance chamber,

And one or more partitions for dividing the resonance chamber into a plurality.
The method according to claim 8,

The partition wall,

And one or a plurality of through holes penetrate the resonance chamber to communicate with each other.
The method according to claim 1 or 2,

The resonance chamber further includes an oil storage portion in which oil separated from the refrigerant on the discharge passage flows and is accumulated.

And the scroll compression unit has an oil hole communicating with the oil storage part so that oil of the oil storage part flows in.