CN1766492A - Cold air circulating structure for refrigerator - Google Patents
Cold air circulating structure for refrigerator Download PDFInfo
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- CN1766492A CN1766492A CN 200410072396 CN200410072396A CN1766492A CN 1766492 A CN1766492 A CN 1766492A CN 200410072396 CN200410072396 CN 200410072396 CN 200410072396 A CN200410072396 A CN 200410072396A CN 1766492 A CN1766492 A CN 1766492A
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- cold air
- fan
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- blade
- refrigerator
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- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a refrigerator cold air circulation structure, which comprises the following parts: grille panel, orifice, fan lid, blade and air-supply fan, wherein the grille panel with cold air output hole is designed to allocate the cold air into the coldroom and freezing chamber; the orifice is set on one side of grille panel, which connects the motor and air-supply fan to guide cold air flowing, which contains bent structure on the fan lid; the front structure of orifice keeps certain distance from the fan lid; the bent blade diffuses the cold air along the radius direction, whose terminal tangents the front of fan lid; the air-supply fan contains at least one back part in connection with the blade and auxiliary fin of fan lid. The invention avoids the interference of cold air and orifice, which reduce the flow noise.
Description
Technical field
The present invention relates to refrigerator, particularly about can reduce the refrigerator inside cold air flow time, and the refrigerator cold air loop structure of the flow losses of generation and noise.
Background technology
Air-conditioner is the freeze cycle that the compression that utilizes refrigerant, condensation, expansion, evaporation process are formed, and keeps the device of the temperature and humidity of indoor environment.Refrigerator also is adjusting device a kind of who utilizes said process, mainly is to become the refrigerant absorption refrigerating chamber of low-temp low-pressure state or the heat of refrigerating chamber through evaporation process, makes refrigerating chamber and refrigerating chamber keep the household appliances of low-temperature condition thus.
Fig. 1 is the sectional side view of general refrigerator inside structure.
As shown in Figure 1, the refrigerator of prior art comprises: constitute housing 10, the refrigerating chamber 13 that is arranged on enclosure interior and the refrigerating chamber 15 of outward appearance, the grid panel 11 that is arranged on the refrigerating chamber 13 or refrigerating chamber 15 back sides constitutes.
Be provided with the evaporimeter 14 that refrigerant is become the low-temp low-pressure state in the space between housing 10 and the grid panel 11, absorb the Air Blast fan 20 of the air that has passed through evaporimeter and the motor of driving Air Blast fan 20.
Air Blast fan 20 preferably uses axial direction to draw the centrifugal fan of radially discharging behind the air, when exporting in order to Air Blast fan 20 inhaled airs, and straight plaid matching Grid screen 11.
And, be provided with the orifice plate 12 that guides cold air flow in the back of Air Blast fan 20.
Below, carry out simple explanation for the circulating cold air process of refrigerator inside.
At first, refrigerant is at the state of the inner sustain low-temp low-pressure of evaporimeter 14, and the heat of the suction air on process evaporimeter 14 surfaces is siphoned away by refrigerant.And along with the rotation of Air Blast fan 20, the cold air of low-temperature condition flows into refrigerating chamber 13 or refrigerating chamber 15 inside by described grid panel 11.
Fig. 2 is the moving profile of cold air circulating structure hollow air-flow of centrifugal fan.
As shown in Figure 2, the cold air circulating structure that is provided with centrifugal fan comprises that output is set have been passed through evaporimeter 14 and become the orifice plate 12 of cold air delivery outlet of cold air of low-temp low-pressure state and centrifugal fan 20 that the described orifice plate 12 certain distances of distance are provided with.
Centrifugal fan 20 comprises: the fan guard 23 that adopts curved-surface structure in order to cooperate with orifice plate 12; One side end is fixed on the fan guard 23, guides the air-flow that sucks the blade 22 of radial direction into, is fixed on the mainboard 24 on the opposite side end of blade 22; The outstanding wheel hub that forms 25 constitutes on the central part of mainboard 24.And, also comprise the motor that rotates described centrifugal fan 20.
On the center, be provided with the cold air delivery outlet at orifice plate 12, and be absorbed in certain degree of depth downwards around the cold air delivery outlet external diameter, have the effect of steering current.And, the fan guard upper structure of centrifugal fan 20 is set on the structure of sinking.
In the cold air circulating structure that as above constitutes, the cold air that is sucked flows towards radial direction along blade 22 by the cold air delivery outlet 13 that forms on orifice plate 12 central parts.
For behind the axial suction air radially in the centrifugal fan of output, near the orifice plate and near the racing and the vortex phenomenon of generation air-flow, exert an adverse impact for the performance of centrifugal fan.
And because the generation of described vortex phenomenon, noise also can increase thereupon.
Simultaneously, on the side of centrifugal fan blade because the flowing of air-flow, so air pressure is higher.But the downside air pressure of blade is lower, constitutes suction surface.Thus, cold air along orifice plate in the centrifugal fan process of flowing, air-flow can be scurried the little side of relative pressure from the big side of relative pressure.Because this phenomenon can produce strong eddy current, the cold air and the orifice plate of scurrying suction surface produce interference, produce noise.
Summary of the invention
In order to solve above problem, the purpose of this invention is to provide a kind of cold air circulating structure, it has improved the blade construction of centrifugal fan, can reduce the air flow losses thus.
And another purpose of the present invention is the blade construction that has improved centrifugal fan, and the air-flow that will axially suck is guided between the blade freely thus, thereby can reduce noise.
To achieve these goals, the technical solution used in the present invention provides a kind of refrigerator cold air loop structure, include the grid panel that has the cold air delivery outlet that disperses the cold air of output to be distributed to the inside of cold compartment of refrigerator and refrigerating chamber the Air Blast fan and be provided with, be provided with the orifice plate that flows of the Air Blast fan that is connected and has fan guard with motor and guiding cold air in grid panel one side, the orifice plate that also includes described guiding cold air flow has warp architecture, and is fixed on the fan guard; The front structure of described orifice plate and fan guard certain interval that is separated by; Terminal front with fan guard is tangent, cold air is spread on radial direction and is set to the blade of warp architecture; At least the Air Blast fan that comprises the accessory cover fin of an aft section that connects described blade and described Air Blast fan cover.
Described accessory cover fin adopts level and smooth curved surface.
The blade of Air Blast fan is provided with pressure face, and the accessory cover fin is the recessed structure of sinking, and the cold air that sucks from direction of principal axis is flowed along described blade and accessory cover fin, disperses on the fan guard radial direction.
Also comprise the opposite that is arranged on described fan guard on the described Air Blast fan, so that the mainboard of the cold air Radial Flow that direction of principal axis is drawn.
Effect of the present invention is the cold air circulating structure of this refrigerator, and cold air and the orifice plate of having avoided Air Blast fan to suck produce interference, have reduced the air flow losses that eddy current and adverse current etc. cause thus.And, guide between the blade airflow smooth that flows into by the direction of principal axis of Air Blast fan, and reduced hydrodynamic noise.
Description of drawings
Fig. 1 is the sectional side view of general refrigerator inside structure;
Fig. 2 is the air flow profile figure that is provided with the cold air circulating structure of centrifugal fan;
Fig. 3 is the profile of the refrigerator partial structurtes of cold air circulating structure of the present invention;
Fig. 4 is the stereogram of the Air Blast fan on the cold air circulating structure of the present invention;
Fig. 5 is the partial enlarged drawing of cold air flow process in the cold air circulating structure of the present invention.
Among the figure:
100: refrigerator 110: shell 120: evaporimeter
130: orifice plate 170: partition wall 200: Air Blast fan
210: mainboard 220: wheel hub 230: motor
240: motor shaft 250: blade 260: fan guard
The specific embodiment
Below, in conjunction with specific embodiments with the content of the cold air circulating structure of the detailed explanation refrigerator of the present invention of accompanying drawing.
Fig. 3 is the part sectioned view of the refrigerator of cold air circulating structure of the present invention.
As shown in Figure 3, the refrigerator 100 with cold air circulating structure of the present invention comprises: the housing 110 that constitutes outward appearance; The refrigerating chamber chamber door 151 and the refrigerating chamber chamber door 161 in refrigerator inside space opened or sealed in the front that is arranged on housing; Inside possesses certain space, and is made of the refrigerating chamber 150 and the refrigerating chamber 160 of refrigerating chamber chamber door 151 or refrigerating chamber chamber door 161 switches.
And, also comprise the back side that is arranged on refrigerating chamber 150 and/or refrigerating chamber 160, be provided with the grid panel 140 of a plurality of cold air delivery outlets 141; The space of separating between grid panel 140 and the shell 110 is provided with cold air path, and the cold air path face 131 that is provided with cold air delivery outlet 180 on the side constitutes.
The end setting of cold air path face 131 is with certain curvature orifice plate 130 of lateral bending song forward, thereby makes flowing of the refrigerants that flow into by cold air output 180 smooth more.
And, on the front space of cold air path face 131, be provided with the Air Blast fan 200 that is used to draw refrigerant, and be provided with the refrigerant evaporimeter 120 that passes through and the motor 230 that rotates Air Blast fan 200 of low-temp low-pressure at the rear space of cold air path face 131.
Below, describe for the operation process of the refrigerator that as above constitutes with cold air circulating structure of the present invention.
At first, become of the startup of the cold air of low-temperature condition by evaporimeter 120, under the effect of Air Blast fan 200, rise along with motor 230.Then, the cold air of rising moves by cold air output 180 front spaces to cold air path face 131.And Air Blast fan 200 adopts axially draws the centrifugal fan that air engine is radially discharged, and under the effect of Air Blast fan 200, cold air axially disperses thus.Thus, the cold air of being drawn by Air Blast fan 200 can not conflict by dative Grid screen 140, has reduced flow losses, has reduced noise.
Simultaneously, a plurality of cold air delivery outlets 141 pass through formation on the grid panel 140 under the effect of Air Blast fan 200 at the cold air that direction of principal axis disperses are distributed to refrigerating chamber 150 and described refrigerating chamber 160 uniformly.
Fig. 4 is the stereogram of the Air Blast fan on the cold air circulating structure of the present invention.
Air Blast fan 200 comprises: mainboard 210; Be vertically set on the back side of mainboard 210, the blade 250 that the guiding air flows; Be arranged on the upper side of blade, be positioned at the fan guard 260 on the orifice plate 130.And, on the center of mainboard, be provided with wheel hub 220, and on the center of wheel hub, be provided with motor shaft insertion groove 221 with certain projecting height.
The cold air of orifice plate 130 guiding is radially exported along the front structure of blade 250.And, the cold air that under the guiding of mainboard 210, flows into structure output in front at the direction of principal axis of motor, and radially export along blade 250.
Blade 250 has certain radius of curvature, and outstanding upper structure forms the pressure face 252 of the cold air flow that flows into by Air Blast fan 200, and lower structure constitutes the low suction surface 251 of relative upper structure pressure.The structure of blade 250 promptly constitutes crooked sector haply with the accessory cover fin 270 of the corner face of fan guard 260 side contacts and the inner cylinder that is connected fan guard 260.
Under the effect of accessory cover fin 270, the refrigerant of the relatively high pressure state that flows along pressure face 252 can not scurried the low suction surface of relative pressure 251.That is, the recessed sagging structure of the accessory cover fin 270 that flows along pressure face 252 flows on radial direction glibly, and the pressure face 252 that has suppressed air-flow blade 250 is thus scurried the secondary flow of suction surface 251.Reduce adverse current, the eddy current that produces when centrifugal fan in the past starts significantly and reduced hydrodynamic noise.
Fig. 5 is the partial enlarged drawing of cold air flow in loop structure of the present invention.
As shown in Figure 5, under the guiding of fan guard 130, the cold air of being exported by the cold air delivery outlet disperses on radial direction along the pressure face 252 of blade 250 and the curved surface that sink of accessory cover fin 270.
The curvature of having passed through cold air delivery outlet 180 and orifice plate 130 changes rapid zone and the cold air made in order changes under the effect of fin 270 Air Blast fan 200 auxiliary, flow to radial direction glibly, suppressed to scurry the secondary flow of suction surface 251 from the pressure face of blade 250.Thus, under the effect of Air Blast fan 200, radially can not produce interference between Shu Chu cold air and the orifice plate 130.And radially Shu Chu cold air can not conflict by dative Grid screen 140, thereby has reduced flow losses and reduced noise.
Simultaneously, during the Air Blast fan rotation, in order to ensure interference between accessory cover 270 and the orifice plate 130, the tip length of orifice plate 130 should be shorter than existing orifice plate 130 slightly.
Technological guidance's thought of the present invention is not limited in an embodiment, can make other embodiment in other inventions and the scope of the present invention according to increase, change, the deletion of structure.
Claims (4)
1, a kind of refrigerator cold air loop structure, include the grid panel that has the cold air delivery outlet that disperses the cold air of output to be distributed to the inside of cold compartment of refrigerator and refrigerating chamber the Air Blast fan and be provided with, be provided with the orifice plate that flows of the Air Blast fan that is connected and has fan guard with motor and guiding cold air in grid panel one side, it is characterized in that:
The orifice plate (130) that also includes described guiding cold air flow has warp architecture, and is fixed on the fan guard (260);
The front structure of described orifice plate (130) and fan guard (260) certain interval that is separated by;
Terminal front with fan guard (260) is tangent, cold air is spread on radial direction and is set to the blade (250) of warp architecture;
At least the Air Blast fan (200) that comprises the accessory cover fin (270) of an aft section that connects described blade (250) and described Air Blast fan cover (260).
2, refrigerator cold air loop structure according to claim 1 is characterized in that: described accessory cover fin (270) adopts level and smooth curved surface.
3, refrigerator cold air loop structure according to claim 1, it is characterized in that: the blade (250) of Air Blast fan (200) is provided with pressure face, accessory cover fin (260) is the recessed structure of sinking, the cold air that sucks from direction of principal axis is flowed along described blade (250) and accessory cover fin (260), on fan guard (260) radial direction, disperse.
4, according to claim the 1 described refrigerator cold air loop structure, it is characterized in that: also comprise the mainboard (210) that is arranged on described fan guard (260) opposite on the described Air Blast fan (200), so that the cold air Radial Flow that direction of principal axis is drawn.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410072396 CN1766492A (en) | 2004-10-27 | 2004-10-27 | Cold air circulating structure for refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410072396 CN1766492A (en) | 2004-10-27 | 2004-10-27 | Cold air circulating structure for refrigerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1766492A true CN1766492A (en) | 2006-05-03 |
Family
ID=36742517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410072396 Pending CN1766492A (en) | 2004-10-27 | 2004-10-27 | Cold air circulating structure for refrigerator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1766492A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101396213B (en) * | 2007-09-27 | 2010-08-18 | 三洋电机株式会社 | Showcase |
| CN102269500A (en) * | 2011-06-29 | 2011-12-07 | 合肥美的荣事达电冰箱有限公司 | Air-cooled refrigerator |
| CN101535747B (en) * | 2006-11-06 | 2012-03-28 | Lg电子株式会社 | Fan motor assembly for blowing cooling air and refrigerator having the same |
| CN108036570A (en) * | 2017-12-06 | 2018-05-15 | 合肥华凌股份有限公司 | A kind of refrigerator refrigeration system and refrigerator |
| CN108870830A (en) * | 2017-05-09 | 2018-11-23 | 合肥华凌股份有限公司 | Refrigerator and its single system double suction air duct |
-
2004
- 2004-10-27 CN CN 200410072396 patent/CN1766492A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101535747B (en) * | 2006-11-06 | 2012-03-28 | Lg电子株式会社 | Fan motor assembly for blowing cooling air and refrigerator having the same |
| CN101396213B (en) * | 2007-09-27 | 2010-08-18 | 三洋电机株式会社 | Showcase |
| CN102269500A (en) * | 2011-06-29 | 2011-12-07 | 合肥美的荣事达电冰箱有限公司 | Air-cooled refrigerator |
| CN108870830A (en) * | 2017-05-09 | 2018-11-23 | 合肥华凌股份有限公司 | Refrigerator and its single system double suction air duct |
| CN108036570A (en) * | 2017-12-06 | 2018-05-15 | 合肥华凌股份有限公司 | A kind of refrigerator refrigeration system and refrigerator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: TAIZHOU LG ELECTRONICS FREEZER CO., LTD. Free format text: FORMER OWNER: LG ELECTRONICS ( TIANJIN ) ELECTRICAL APPLIANCES CO., LTD. Effective date: 20091113 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20091113 Address after: 2, Yingbin Road, Taizhou economic and Technological Development Zone, Jiangsu, Taizhou Province, China: 225300 Applicant after: Taizhou LG Electronics Refrigerator Co., Ltd. Address before: Beichen District, Tianjin Xing Dian Highway Code: 300402 Applicant before: Lejin Electronic and Electric Appliance Co., Ltd. (Tianjin) |
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| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Open date: 20060503 |