CN103174677B - Spiral case and there is its air conditioner - Google Patents
Spiral case and there is its air conditioner Download PDFInfo
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- CN103174677B CN103174677B CN201110431654.6A CN201110431654A CN103174677B CN 103174677 B CN103174677 B CN 103174677B CN 201110431654 A CN201110431654 A CN 201110431654A CN 103174677 B CN103174677 B CN 103174677B
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Abstract
The invention provides a kind of spiral case and have its air conditioner, wherein, spiral case comprises spiral case body (10); Inlet side (30) and air side (33); The air side (33) of spiral case has fan blade placement section (20), and the air-out passage (40) to be communicated with fan blade placement section (20), spiral case also has the diffusion portion (50) extended towards air-out passage (40) direction, spiral case also comprises: backflow wind passage (60), its entry end (61) is positioned at diffusion portion (50) towards on the sidewall of air-out passage (40), and the outlet end (63) of backflow wind passage (60) is communicated with the inlet side (30) of spiral case.Present invention efficiently solves spiral case air-out in prior art unstable and cause the problem of spiral case surge.
Description
Technical field
The present invention relates to field of air conditioning, in particular to a kind of spiral case and the air conditioner with it.
Background technique
At present, there is the phenomenon of the air-out shakiness varied in size in cabinet-type air conditioner, the unstability that this phenomenon is mainly spiral case air intake causes, and the problem of the instability of air intake is mainly that intake grill exists different static pressure field.The mode solving the unstable problem of above-mentioned air-out in prior art is the baffle liner part increasing similar grid at spiral case inlet place, but effect not obvious.
As shown in Figure 1, floor standing air-conditioner device of the prior art sucks wind from spiral case both sides, then through blower fan, the air-out passage 40 ' of wind from spiral case is blown out, because the cabinet-type air conditioner of prior art is arranged for closing, distinguished and admirable center during spiral case air-out and the center non-concentric of fan blade placement section 20 ', between the air-out passage 40 ' and spiral case diffusion portion 50 ' of spiral case, there is air-out vortex phenomenon, cause spiral case air-out instability and then make spiral case produce the phenomenon of surge.
As shown in Figure 2, the one end, inlet side in the spiral case diffusion portion 50 ' in floor standing air-conditioner device of the prior art is provided with the miscellaneous part (such as terminal box) of floor standing air-conditioner device, these parts have blocked fraction thus have caused the one end, inlet side in spiral case diffusion portion 50 ' to become low pressure area, and spiral case and this parts there will be inevitable gap when installing, cause when spiral case inlet side 30 ' air intake, a little air intake is had to flow into gap place (the backflow arrow see in Fig. 2), result in spiral case air intake unstable, produce the phenomenon of surge.
Summary of the invention
The present invention aims to provide a kind of spiral case and has its air conditioner, causes the problem of spiral case surge to solve spiral case air-out instability in prior art.
To achieve these goals, according to an aspect of the present invention, provide a kind of spiral case, comprise spiral case body, inlet side and air side; The air side of spiral case has fan blade placement section, and the air-out passage to be communicated with fan blade placement section, spiral case also has the diffusion portion extended towards air-out passage direction, spiral case also comprises backflow wind passage, its entry end is positioned at diffusion portion towards on the sidewall of air-out passage, and the outlet end of backflow wind passage is communicated with the inlet side of spiral case.
Further, the position of the outlet end of backflow wind passage is relative with diffusion portion.
Further, diffusion portion has the return duct of opening towards air-out passage, the entry end with one voice forming the wind passage that refluxes of return duct and air-out passage, and the bottom of return duct is provided with air outlet hole to form the outlet end of backflow wind passage.
Further, return duct is rectangle groove, circular trough or curve bath.
Further, air outlet hole is positioned at the middle part of the bottom land of rectangle groove.
According to a further aspect in the invention, provide a kind of air conditioner, comprise above-mentioned spiral case.
Apply technological scheme of the present invention, spiral case comprises spiral case body, inlet side and air side; The air side of spiral case has fan blade placement section, and the air-out passage to be communicated with fan blade placement section, spiral case also has the diffusion portion extended towards air-out passage direction, spiral case also comprises backflow wind passage, its entry end is positioned at diffusion portion towards on the sidewall of air-out passage, and the outlet end of backflow wind passage is positioned at the inlet side of spiral case.The wind sucked from the intake grill of air conditioner enters from the inlet side of spiral case, is flowed out by air-out passage; In the diffusion portion of spiral case towards on air-out passage sidewall, air-out herein can form eddy current wind, and the backflow wind passage that eddy current wind enters spiral case is back to inlet side, makes spiral case air inlet/outlet more stable, efficiently solves the unstable and surge problems that causes of air-out.
Accompanying drawing explanation
The Figure of description forming a application's part is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 shows the schematic front view of spiral case embodiment of the prior art;
Fig. 2 shows the schematic rear view of the spiral case of Fig. 1;
Fig. 3 shows the schematic front view of the embodiment of spiral case of the present invention;
Fig. 4 shows the schematic rear view of the spiral case of Fig. 3;
Fig. 5 shows the low wind shelves frequency spectrum snapshot of the embodiment of spiral case of the present invention;
Fig. 6 shows the low wind shelves frequency spectrum snapshot of the embodiment of the spiral case of prior art;
Fig. 7 shows the apoplexy shelves frequency spectrum snapshot of the embodiment of spiral case of the present invention;
Fig. 8 shows the apoplexy shelves frequency spectrum snapshot of the embodiment of the spiral case of prior art;
Fig. 9 shows the high wind shelves frequency spectrum snapshot of the embodiment of spiral case of the present invention;
Figure 10 shows the high wind shelves frequency spectrum snapshot of the embodiment of the spiral case of prior art;
Figure 11 shows the superelevation wind shelves frequency spectrum snapshot of the embodiment of spiral case of the present invention;
Figure 12 shows the superelevation wind shelves frequency spectrum snapshot of the embodiment of the spiral case of prior art.
Embodiment
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
As shown in Figure 3 and Figure 4, the spiral case of the present embodiment comprises spiral case body 10, inlet side 30, air side 33, air-out passage 40 and backflow wind passage 60; The air side 33 of spiral case has fan blade placement section 20; Air-out passage 40 is communicated with fan blade placement section 20; Diffusion portion 50 extends towards air-out passage 40; The entry end 61 of backflow wind passage 60 is positioned at diffusion portion 50 towards on the sidewall of air-out passage 40; The outlet end 63 of backflow wind passage 60 is communicated with the inlet side 30 of spiral case.
During blower fan running, the wind sucked from the intake grill of air conditioner enters from the inlet side 30 of spiral case, is flowed out by air-out passage 40; In the diffusion portion 50 of spiral case towards on air-out passage 40 sidewall, air-out herein can form eddy current wind, the backflow wind passage 60 that eddy current wind enters spiral case is back to inlet side 30, make spiral case air inlet/outlet more stable, efficiently solve the unstable and surge problems that causes of air-out, thus play the effect reducing noise.
Wherein, spiral case body 10 comprises end plate 10a and side plate 10b; Side plate 10b extends along the partial circumferential of end plate 10a to the side of end plate, and generally the end plate 10a of spiral case body 10 is rectangular, and side plate 10b extends along three limits of the end plate 10a of rectangle towards the side of end plate.Side plate is for having ringent structure, and side plate 10b inside is provided with fan blade, the air-out passage 40 that the indentation, there of above-mentioned opening shape structure extends for the formation of the radial direction along blower fan.Side plate 10b has the cylindrical inner 10c coordinated with fan blade outer surface, and the breach of this cylindrical inner 10c is communicated with air-out passage 40.Be tiltedly installed with a wind deflector 10d at air-out passage 40 place for changing air-out direction, the circulation area of air-out passage 40 is increased laterally gradually by fan blade; Wind deflector 10d one end is connected with cylindrical inner 10c, and the other end is connected with side plate 10b, wherein, wind deflector, forms the region of a similar triangle between cylindrical inner 10c and side plate 10b, is commonly referred to as diffusion portion.
Preferably, the position of the outlet end 63 of backflow wind passage 60 is corresponding with diffusion portion 50, and namely outlet end 63 is positioned at the regional extent of inlet side respective class like triangle in diffusion portion 50; The eddy current wind refluxed by backflow wind passage 60 is flowed out from the corresponding position in diffusion portion 50, and reenters inlet side, and eliminate the low pressure of position, corresponding diffusion portion 50, the part air intake avoiding spiral case blows back into this position, thus makes spiral case air intake more stable.
Preferably, diffusion portion 50 has the return duct of opening towards air-out passage 40, the entry end 61 with one voice forming the wind passage 60 that refluxes of return duct and air-out passage 40, and, the bottom of return duct is provided with air outlet hole to form the outlet end 63 of backflow wind passage 60, return duct in the present embodiment is rectangle groove, and air outlet hole is positioned at the middle part of the bottom land of rectangle groove, and the return duct in the present embodiment also can be circular trough or curve bath.In other embodiments unshowned in the drawings, return duct also can be other shapes.
Adopt the spiral case (hereinafter referred to as test example) for testing of above-mentioned Technical Design of the present invention, as shown in Figure 3 and Figure 4, spiral case is provided with backflow wind passage 60, its entry end 61 be return duct and air-out passage 40 with one voice, outlet end 63 is the air outlet hole of the bottom of the return duct of spiral case.Test according to above-mentioned test example, contrast noise and crest frequency with the spiral case of prior art, test as follows:
This test adopts the principle of air quantity recirculation balance pressure to test, and the gas that a part is discharged leads back fans entrance again, does not make compressor flow too small and is in range of instability work.The problem of research simulation vaporizer noise and air-out shakiness under large size adheres to the severe environmental conditions such as water droplet, dust, the Experimental Comparison spiral case of prior art and the spiral case of test example complete machine noise and crest frequency under each wind shelves, data show, and the new spiral case optimized after change can effectively reduce noise and crest frequency.
Test method: adopt same cabinet machine, changes the spiral case of different prior art and test example and carries out carrying out stifled at exhaust outlet and not blocking up on same spiral case, gathering data and the On-site Experience of different situations respectively.
Phenomenon is experienced in test: when On-site Experience air-out is unstable, the test function of the spiral case of assembling prior art hears the Abnormal Sound that air-out inequality causes more significantly, and the testing machine Abnormal Sound of the spiral case of test example has larger improvement, distance test (DT) machine one meter of distance does not hear abnormal sound.
Concrete test data is as follows:
1) low wind shelves:
| Wind | Overall noise | Peak value/frequency |
| Shelves | /dB(A) | /dB(A)/Hz | |
| The spiral case of test example | L | 34.4 | 21.6/258.0 |
| The spiral case of prior art | L | 36.2 | 22.5/245.5 |
The spiral case low wind shelves frequency spectrum of test example: as shown in Figure 5;
The spiral case low wind shelves frequency spectrum of prior art: as shown in Figure 6.
2) apoplexy shelves:
The spiral case apoplexy shelves frequency spectrum of test example: as shown in Figure 7;
The spiral case apoplexy shelves frequency spectrum of prior art: as shown in Figure 8.
3) high wind shelves:
The spiral case height wind shelves frequency spectrum of test example: as shown in Figure 9;
The spiral case height wind shelves frequency spectrum of prior art: as shown in Figure 10.
4) superelevation wind shelves:
The spiral case superelevation wind shelves frequency spectrum of test example: as shown in figure 11;
The spiral case superelevation wind shelves frequency spectrum of prior art: as shown in figure 12.
Conclusion (of pressure testing):
1, the spiral case of test example reduces 3.1dB (A) at superelevation wind shelves, and high wind shelves reduce 2.9dB (A), and apoplexy shelves reduce 2.5dB (A), reduces 1.8dB (A) at low wind shelves;
2, peak value aspect, the spiral case of test example reduces 0.9dB (A) at low wind shelves, and test example apoplexy shelves reduce 3.1dB (A), and reduce 4.9dB (A) at high wind shelves, superelevation wind shelves reduce 2.6dB (A);
3, tonequality is experienced: the spiral case of test example is obviously better than the spiral case of prior art;
4, wind quantity test: the spiral case of test example is mutually lower than the spiral case air quantity of prior art 15 cubes.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. a spiral case, comprising:
Spiral case body (10);
Inlet side (30) and air side (33);
The air side (33) of described spiral case has fan blade placement section (20), and the air-out passage (40) to be communicated with described fan blade placement section (20), described spiral case also has the diffusion portion (50) extended towards described air-out passage (40) direction
It is characterized in that, described spiral case also comprises: backflow wind passage (60), its entry end (61) is positioned at described diffusion portion (50) towards on the sidewall of described air-out passage (40), the outlet end (63) of described backflow wind passage (60) is communicated with the inlet side (30) of described spiral case
Described diffusion portion (50) has the return duct of opening towards described air-out passage (40), the entry end (61) of the described backflow wind of formation with one voice passage (60) of described return duct and described air-out passage (40), further, the bottom of described return duct is provided with air outlet hole to form the outlet end (63) of described backflow wind passage (60).
2. spiral case according to claim 1, is characterized in that, the outlet end (63) of described backflow wind passage (60) is relative with described diffusion portion (50).
3. spiral case according to claim 1, is characterized in that, described return duct is square groove, circular trough or curve bath.
4. spiral case according to claim 1, is characterized in that, described air outlet hole is positioned at the middle part of the bottom land of described return duct.
5. an air conditioner, has spiral case, it is characterized in that, the spiral case of described spiral case according to any one of Claims 1-4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110431654.6A CN103174677B (en) | 2011-12-20 | 2011-12-20 | Spiral case and there is its air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110431654.6A CN103174677B (en) | 2011-12-20 | 2011-12-20 | Spiral case and there is its air conditioner |
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| Publication Number | Publication Date |
|---|---|
| CN103174677A CN103174677A (en) | 2013-06-26 |
| CN103174677B true CN103174677B (en) | 2016-02-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110431654.6A Active CN103174677B (en) | 2011-12-20 | 2011-12-20 | Spiral case and there is its air conditioner |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105065332B (en) * | 2015-09-11 | 2018-11-30 | 珠海格力电器股份有限公司 | A kind of air-conditioning, cydariform spiral case ducting system and its air-duct spiral case |
| CN105352153A (en) * | 2015-12-01 | 2016-02-24 | 珠海格力电器股份有限公司 | Air guide structure and cabinet air conditioner with same |
| CN109099509B (en) * | 2018-09-27 | 2024-04-05 | Tcl空调器(中山)有限公司 | Cabinet air conditioner and air conditioner |
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| US2171341A (en) * | 1936-06-01 | 1939-08-29 | Gen Electric | Fan casing |
| JPS5575592A (en) * | 1978-12-05 | 1980-06-06 | Matsushita Electric Ind Co Ltd | Fan |
| SU1092305A1 (en) * | 1983-01-11 | 1984-05-15 | Пермский политехнический институт | Centrifugal turbine |
| CN1690538A (en) * | 2001-03-23 | 2005-11-02 | 三菱重工业株式会社 | Indoor unit and air conditioner |
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| CN202348769U (en) * | 2011-12-20 | 2012-07-25 | 珠海格力电器股份有限公司 | Volute and air-conditioner with same |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008309029A (en) * | 2007-06-13 | 2008-12-25 | Ihi Corp | Centrifugal compressor |
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Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2171341A (en) * | 1936-06-01 | 1939-08-29 | Gen Electric | Fan casing |
| JPS5575592A (en) * | 1978-12-05 | 1980-06-06 | Matsushita Electric Ind Co Ltd | Fan |
| SU1092305A1 (en) * | 1983-01-11 | 1984-05-15 | Пермский политехнический институт | Centrifugal turbine |
| CN1690538A (en) * | 2001-03-23 | 2005-11-02 | 三菱重工业株式会社 | Indoor unit and air conditioner |
| FR2856442B1 (en) * | 2003-06-19 | 2006-08-04 | Renault Sa | CENTRIFUGAL VENTILATON DEVICE. |
| CN101012837A (en) * | 2007-02-02 | 2007-08-08 | 清华大学 | Centrifugal compressor having air removal jet box structure |
| CN201851403U (en) * | 2010-10-26 | 2011-06-01 | 珠海格力电器股份有限公司 | Air duct device of air-conditioner and air-conditioner |
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| Publication number | Publication date |
|---|---|
| CN103174677A (en) | 2013-06-26 |
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