CN101529178A

CN101529178A - Cool air supplying apparatus used in refrigerator and refrigerator having the same

Info

Publication number: CN101529178A
Application number: CN200680056156A
Authority: CN
Inventors: 裵准灏; 金昌俊
Original assignee: LG Electronics Inc
Current assignee: LG Electronics Inc
Priority date: 2006-10-19
Filing date: 2006-10-19
Publication date: 2009-09-09
Also published as: US20100205997A1; EP2074361A4; EP2074361A1; WO2008047960A1

Abstract

The present invention provides a cool air supplying apparatus for a refrigerator including a turbo fan configured to a grill forming a freezing space to blow cool air into the freezing space; and a shroud configured between a casing and the grill so as to cover the turbo fan and includes an opening part which sucks cool air, an orifice formed at an end of the opening part, an inclined part formed so as to incline toward the grill from one end of the orifice, and a flat part formed so as to be integrated with the inclined part and configured at a constant interval from the grill. Therefore, it is possible to increase the height of the blades of the turbo fan without increasing the total size of the refrigerator and causing resistance to the inflow of cool air.

Description

Be used for the cold air supply device of refrigerator and have the refrigerator of this cold air supply device

Technical field

The present invention relates to a kind of refrigerator that is used for the cold air supply device of refrigerator and has this cold air supply device, be particularly related to a kind of following cold air supply device that is used for refrigerator and have the refrigerator of this cold air supply device, in this cold air supply device, near the perforate that is formed for the flow passage that cold air flows into of guard shield, be formed with rake, thereby make this perforate outstanding.

Background technology

Refrigerator is a kind of being used for to make the household electrical appliance of the food fresh-keeping that is stored in its storeroom by carrying out kind of refrigeration cycle.

At first, referring to figs. 1 through Fig. 3 the structure and the operation of refrigerator are described, particularly explanation is used to discharge the structure and the operation of the part of cold air.

At this, Fig. 1 is the view of refrigerator when door is opened that shows according to conventional art.Fig. 2 shows the evaporimeter that is disposed at according to the rear side of the refrigerating chamber rear wall in the refrigerator of conventional art.Fig. 3 is for being blown into the cold air in the evaporimeter stereogram of the turbofan in this refrigerating chamber.

Usually, refrigerator is separated into refrigerating chamber 1 and refrigerating chamber 2, and the front side of refrigerating chamber 1 and refrigerating chamber 2 opens and closes by door 3, and this 3 is incorporated on the refrigerator shell 10 that forms lateral surface rotationally.

Refrigerating chamber 1 stores the meat and the fish that will preserve for a long time, and refrigerating chamber 2 stores wants vegetables, fruit, beverage and dish fresh-keeping and that the short time preserves, and the temperature of refrigerating chamber 1 is lower than the temperature of refrigerating chamber 2.

For refrigerating chamber 1 (or refrigerating chamber 2) is remained on low temperature, should produce cold air by compressor 6 that carries out kind of refrigeration cycle and evaporimeter 7, then cold air is introduced in the refrigerating chamber 1.

More specifically, air blast or turbofan 9 are disposed at the rear side of the refrigerating chamber grid 4 that forms reefer space, being blown in the refrigerating chamber 1 by the cold air that evaporimeter 7 is supplied with.

Turbofan 9 is disposed at grid 4, and guard shield 8 is disposed at the upside of turbofan 9.

Guard shield 8 covers turbofan 9, guides towards the outlet 5 of grid 4 with the cold air that will pass turbofan 9.Thereby Quilt with air conditioning enters in the refrigerating chamber 1, the temperature in the refrigerating chamber 1 can be remained on design temperature.

Turbofan 9 comprises: have ring-shaped edge and the outstanding body 9a that concentrates on the hub 9a ' at center; A plurality of blade 9b, it is disposed at the edge of body 9a with predetermined spacing, with along the cold air of radially introducing towards hub 9a ' guiding; And fan shroud 9c, it forms ring-type and is connected in blade 9b at the opposite side of hub 9a '.

The performance of turbofan 9 comprises: the noise that the temperature of storeroom is remained on design temperature and generation refrigerator.

At this, the height of the blade 9b of turbofan 9 (being the distance between body 9a and the fan shroud 9c) is high more, and the soundproof effect of turbofan 9 and refrigerating efficiency are good more.

Yet if the height of guard shield 8 is increased, so that the height of blade 9b becomes big, in other words, if guard shield 8 becomes more near housing 10, the flow passage of the cold air that is formed by grid 4 and guard shield 8 narrows down, thereby has increased the mobile loss of cold air towards hub 9a '.Housing 10 is increased the problem of coming anti-loss here can cause the overall dimension increase of refrigerator.

Therefore, have the demand that continues for the improvement of the structure of guard shield 8 so that the blade 9b of turbofan 9 highly increases, and do not influence cold air along path from evaporimeter 7 towards the flowing of the hub 9a ' of turbofan 9, and do not increase the overall dimension of refrigerator.

Summary of the invention

In view of the defective of conventional art has proposed the present invention; Therefore, the object of the present invention is to provide a kind of refrigerator that is used for the cold air supply device of refrigerator and has this cold air supply device, this cold air supply device can increase the blades height of turbofan under situation about not causing for the tangible resistance of the inflow of cold air.

For be implemented in that this particularly and broadly describes according to these and other advantage of the present invention, a kind of cold air supply device that is used for refrigerator is provided, comprise: turbofan, it is arranged at the grid that forms reefer space, cold air is blown in this reefer space; And guard shield, it is arranged between the housing and this grid of the lateral surface that forms refrigerator, and covering this turbofan, and this guard shield comprises: peristome, this peristome absorption cold air; Perforate, this perforate are formed on an end of this peristome; Rake, this rake form from an end of this perforate to tilt towards this grid; And the par, this par forms with this rake and becomes one, and is arranged to and this grid constant space of being separated by.

Like this, cold air supply device can have high efficiency and lower noise by forming rake.

Simultaneously, an end of this par of connection of this rake and the spacing between this grid equal the spacing between this par and this grid.

Like this, can increase blades height, guarantee the flow passage of the sufficient cold air that forms by this housing and this guard shield simultaneously.

In addition, this turbofan is disposed at this grid, and this turbofan comprises: body, and hub is outstanding at the center of this body; A plurality of blades, described blade shaped is formed in the edge of this body; And fan shroud, this fan shroud is installed on described blade, with described vanes fixed.

In the case, preferably, this fan shroud is positioned at a side of this rake.That is to say that preferably, this fan shroud forms crooked, make an end of this fan shroud be positioned at a side of this perforate, and the other end of this fan shroud is positioned at a side of this rake.

This peristome and this perforate are more outstanding than this par.

In the case, preferably, the height setting of this rake is in 20% to 30% the scope of the spacing between this par and this grid.

In addition, preferably, the width of this rake is set in 50% to 150% the scope of spacing between this par and this grid.

In addition, preferably, the spacing between this par and this housing is set in 90% to 110% the scope of spacing between this par and this grid.

In the case, the width of this rake is for when this rake resulting length during projection on this grid.

For realizing this purpose, a kind of refrigerator also is provided, comprising: housing, it forms the lateral surface of this refrigerator; Grid, it is arranged to and this housing distance of being separated by, to form reefer space; Turbofan, it is disposed at this grid, and this turbofan comprises: body, hub is outstanding at the center of this body; A plurality of blades, described blade shaped is formed in the edge of this body; And fan shroud, this fan shroud is installed on described blade, with described vanes fixed; Guard shield, it is located between this housing and this grid, and covering this turbofan, and this guard shield comprises: peristome, this peristome is drawn cold air; Perforate, this perforate are formed on an end of this peristome; Rake, this rake form from an end of this perforate to tilt towards this grid; And the par, this par forms and this rake one, and is configured to and this grid constant space of being separated by, and wherein, an end of this par of connection of this rake and the spacing between this grid equal the spacing between this par and this grid; And evaporimeter, it is disposed at the below of this turbofan, to produce cold air.

Read following detailed description of the present invention in conjunction with the drawings, aforementioned and other purpose, feature, scheme and advantage of the present invention will be more apparent.

Description of drawings

Accompanying drawing is further understood of the present invention to provide in conjunction with in this manual and constitute the part of specification.Accompanying drawing shows embodiments of the invention, and is used for explaining principle of the present invention with specification.

In the accompanying drawings:

Fig. 1 is the view of refrigerator when door is opened that shows according to conventional art;

Fig. 2 shows the evaporimeter of being located at according to the rear side of the refrigerating chamber rear wall in the refrigerator of conventional art;

Fig. 3 is for being blown into the cold air in the evaporimeter stereogram of the turbofan in the storeroom;

Fig. 4 shows the sectional view of the cold air supply device of refrigerator according to the preferred embodiment of the invention;

When Fig. 5 is the turbofan operation that shows when the guard shield of the cold air supply device that uses Fig. 4, from chart about the result of energy consumption test; And

When Fig. 6 is the turbofan operation that shows when the guard shield of the cold air supply device that uses Fig. 4, from chart about the result of noise test.

The specific embodiment

Accompanying drawing below with reference to illustrated example carries out detailed reference explanation to the preferred embodiments of the present invention.

Hereinafter, will describe the cold air supply device of refrigerator according to the preferred embodiment of the invention with reference to the accompanying drawings in detail and have the refrigerator of this cold air supply device.

In an embodiment, will represent and the identical member of member among Fig. 1 to Fig. 3, but will omit explanation it with different Reference numerals.

Fig. 4 shows the sectional view of the cold air supply device of refrigerator according to the preferred embodiment of the invention.

As shown in drawings, guard shield 300 is located at the housing 100 of the lateral surface that forms refrigerator and is formed between the grid 110 of reefer space, advertises the turbofan 200 of cold air with covering.

That is to say that turbofan 200 is disposed at grid 110, guard shield 300 is disposed at the upside of turbofan 200, covering turbofan 200, and housing 100 and guard shield 300 distance of being separated by.

At this, the space between guard shield 300 and the housing 100 forms the flow passage of the cold air that has passed evaporimeter (7 among Fig. 2).

The center of guard shield 300 has the peristome 310 of drawing cold air, and the Quilt with air conditioning that is produced by evaporimeter (7 among Fig. 2) is introduced in the turbofan 200.

In addition, perforate 310 ' is formed on the rounded ends that limits peristome 310, to project to the outside of turbofan 200, to have semi-circular cross-section.Simultaneously, rake 330 forms from an end of perforate 310 ' to tilt towards grid 110, and par 320 forms and rake 330 one, and is configured to and the grid 110 constant spacing of being separated by.

At this, to compare with par 320, the peristome 310 of guard shield 300 forms towards housing 100 more outstanding.For obtaining this structure, rake 330 is formed between peristome 310 and the par 320, to project to the outside of turbofan 200 obliquely, connects central part and par with this.

In the case, an end of the connection par 320 of rake 330 and the spacing between the grid 110 equal the spacing between par 320 and the grid 110.

In addition, turbofan 200 is disposed on the grid 110, and comprises: body 210, and hub 220 is outstanding at the center of body 210; A plurality of blades 230, it is formed at the edge of body 210; And fan shroud 240, it is installed on the blade 230, so that blade 230 is fixing.

Because guard shield 300 has rake 330, therefore, can increase the height of blade 230, to improve the efficient of turbofan 200.

Although can be by increasing the height that spacing A between guard shield 300 and the grid 110 increases blade 230 simply, owing to can make the path that flow into the cold airflow F in the turbofan 200 narrow down like this, so it is not preferred.

In other words, should consider to improve the efficient of turbofan 200 and reduce the design consideration preferred embodiment of the present invention of the guard shield with rake 330 300 cold air comes to(for) the resistance of flow passage.

For this reason, fan shroud 240 forms a side that is positioned at rake 330.

That is to say that fan shroud 240 forms crooked, a side that makes the perforate 310 ' that an end of fan shroud 240 is positioned at, and the other end of fan shroud 240 is positioned at a side of rake 330.

Utilize this structure, be installed on an end of blade 230, can be formed at a side of the downside or the rake of rake 330 with the fan shroud 240 of the height of limit blade 230.

Therefore, even if increasing the height of blade 230, when improving the efficient of turbofan 200, rake 330 can prevent that also the flow passage that the par 320 by housing 100 and guard shield 300 forms from reducing, and prevents the flow losses of cold air with this.

On the other hand, even if do not form at rake 330 linearly, and peristome 310 and perforate 310 ' 320 when outstanding more, also can obtain same effect compared to the par.

More particularly, the design considerations of rake 330 is as follows.

At first, the height C of rake 330, that is, the spacing between par 320 and the peristome 310 is preferably 20% to 30% of spacing A between grid 110 and the par 320.The foundation of above-mentioned scope is as follows.

For the resistance that makes cold air opposing path minimizes, the numerical value of spacing A and spacing B (spacing between par 320 and the housing 100) is basic identical.In other words, A/B is in 0.9 to 1.1 scope.More specifically, relatively reduce, and spacing A and spacing B sum be when being constant that a side less at numerical value can produce mobile loss at spacing A or spacing B.In this regard, consider that loss draws the ratio of the A/B in the above scope.

Yet, if spacing B than little 20% to 30% the scope of spacing A, loses not remarkable.Yet when surpassing above-mentioned scope as if spacing A than spacing B is big, loss increases significantly.This is because the resistance of cold air opposing path increases along with being reduced to exponentially of area of path.

About with the relation of the height C of rake 330, compare with spacing A between the par 320 with grid 110, if the height C of rake 330 increases by 30% or more, then the peristome 310 of guard shield 300 becomes very approaching with housing 100, make the area of flow passage reduce like this, cause flow losses and cause noise with this.

Therefore, the height C that is preferably rake 330 is set at 20% to 30% of spacing A between par and the grid.

Next, width D about rake 330, promptly, the peristome 310 of rake 330 and the design of the distance between the par 320, the peristome 310 of rake 330 is projected on the grid 110 with par 320, can draw this distance, be preferably this width D is limited in 50% to 150% the percentage range with respect to spacing A.

If width D is 50% or more hour with respect to the percentage of spacing A, the rake 330 of guard shield 300 40 degree or more that tilt then.Like this, the cold air that flows in the turbofan 200 via the flow passage between guard shield 300 and the housing 100 is not to be guided by the rake 330 of guard shield 300, but effectively collides the rake 330 of guard shield 300, therefore causes big flow losses.

In addition, if width D is 150% or bigger with respect to the percentage of spacing A, then rake 330 takies more spaces of guard shield 300, causes hindering the design of guard shield 300 like this.

In other words, owing to compare with the qualification of the height of guard shield 300, refrigerating chamber plays bigger influence for the qualification of the width of guard shield 300, and therefore, if width D has exceeded above-mentioned numerical value, then the rake 330 that tilts along the short transverse of guard shield 300 can shorten.

Therefore, guard shield 300 along the circumferential direction has asymmetric shape, thereby causes making difficulty.

When use has the guard shield 300 of said structure, can when keeping overall dimensions, increase the height of blade 230 individually.Therefore, not increasing overall dimensions and not influencing under the situation of inflow of cold-producing medium, can improve the performance of turbofan 200.

Simultaneously, the invention provides a kind of refrigerator, it comprises: housing 100, and it is formed on the lateral surface of refrigerator; Grid 110, it is configured to and a be separated by distance and form reefer space of housing 100; Turbofan 200, it is disposed at grid 110, and this turbofan 200 comprises: body 210, at the outstanding hub 220 in the center of body 210; Be formed at a plurality of blades 230 at the edge of body 210; And be installed on blade 230 with the fan shroud 240 that blade 230 is fixing; Guard shield 300, it is disposed between housing 100 and the grid 110, and with covering turbofan 200, and guard shield 300 comprises: the peristome 310 of drawing cold air; Be formed on the perforate 310 ' of an end of peristome 310; Form the rake 330 that tilts towards grid 110 from an end of perforate 310 '; And form with rake 330 one and be configured to and the be separated by par 320 of constant space of grid 110, wherein an end of the connection par 320 of rake 330 and the spacing between the grid 110 equal the spacing between par 320 and the grid 110; And evaporimeter (7 among Fig. 2), it is located at the below of turbofan 200, to produce cold air.

When use has the guard shield 300 of said structure, operation and because the consumption and the noise of the energy that this operation causes of turbofan 200 is described with reference to Fig. 5 and Fig. 6.

When Fig. 5 is the turbofan operation that shows when the guard shield of the cold air supply device that uses Fig. 4, from chart about the result of energy consumption test.

As shown in Figure 5, with blade height according to conventional art is that the turbofan of 25mm is compared, according to the guard shield 300 with rake 330 of the present invention, when the height of blade 230 increases to 30mm, compare with conventional art, the energy consumption when using guard shield 300 of the present invention reduces 1w or more on the whole.

In addition, along with the increase of flow, energy consumption according to the present invention reduces significantly.For example, when flow be 1.6m ³/ timesharing, energy consumption can reduce nearly 1.7w.

With reference to Fig. 6, compare with conventional art, in the present invention, noise has reduced 1dB or more on the whole.

In addition, along with the increase of flow, noise can reduce bigger grade.For example, when flow be 1.6m ³/ timesharing, noise can reduce 2dB.

As mentioned above, when using according to the cold air supply device that is used for refrigerator of the present invention, can be under the situation of the overall dimension that does not increase refrigerator, improve by the blade that increases turbofan and to advertise efficient.

In addition, can under the situation that does not increase overall dimension, increase blades height, and can not make the resistance that flows into the cold air in the turbofan increase owing to the increase of height, therefore can prevent the loss of noise and energy of flow by the structure that changes guard shield.

Because under the situation that does not break away from characteristic of the present invention, can embody feature of the present invention in a variety of forms, therefore, should be understood that, do not having under the situation about specifying, the foregoing description is not subjected to aforesaid specifically described any restriction, but should more broadly explain as in attached claims institute restricted portion, and therefore, be intended to contain the scope that falls into claims or all changes and the modification in its equivalency range as attached claims.

Claims

1. cold air supply device that is used for refrigerator comprises:

Turbofan, it is disposed at the grid that forms reefer space, cold air is blown in this reefer space; And

Guard shield, it is configured between the housing and this grid of the lateral surface that forms refrigerator, and covering this turbofan, and this guard shield comprises: peristome, this peristome absorption cold air; Perforate, this perforate are formed on an end of this peristome; Rake, this rake form from an end of this perforate to tilt towards this grid; And the par, this par forms and this rake one, and is configured to and this grid constant space of being separated by.

2. the cold air supply device that is used for refrigerator as claimed in claim 1, wherein, an end of this par of connection of this rake and the spacing between this grid equal the spacing between this par and this grid.

3. the cold air supply device that is used for refrigerator as claimed in claim 1, wherein, this turbofan is disposed at this grid, and this turbofan comprises: body, hub is outstanding at the center of this body; A plurality of blades, described blade shaped is formed in the edge of this body; And fan shroud, this fan shroud is installed on described blade, with described vanes fixed.

4. the cold air supply device that is used for refrigerator as claimed in claim 3, wherein, this fan shroud is positioned at a side of this rake.

5. the cold air supply device that is used for refrigerator as claimed in claim 3, wherein, this fan shroud forms crooked, so that an end of this fan shroud is positioned at a side of this perforate, and the other end of this fan shroud is positioned at a side of this rake.

6. the cold air supply device that is used for refrigerator as claimed in claim 1, wherein, this peristome and this perforate are more outstanding than this par.

7. the cold air supply device that is used for refrigerator as claimed in claim 1, wherein, the height C of this rake is set in 20% to 30% the scope of spacing A between this par and this grid.

8. the cold air supply device that is used for refrigerator as claimed in claim 1, wherein, the width D of this rake is set in 50% to 150% the scope of spacing A between this par and this grid.

9. the cold air supply device that is used for refrigerator as claimed in claim 1, wherein, the spacing B between this par and this housing is set in 90% to 110% the scope of spacing A between this par and this grid.

10. the cold air supply device that is used for refrigerator as claimed in claim 8, wherein, the width D of this rake is for when this rake resulting length during projection on this grid.

11. a refrigerator comprises:

Housing, it forms the lateral surface of this refrigerator;

Grid, it is configured to and this housing distance of being separated by, to form reefer space;

Turbofan, it is disposed at this grid, and this turbofan comprises: body, hub is outstanding at the center of this body; A plurality of blades, described blade shaped is formed in the edge of this body; And fan shroud, this fan shroud is installed on described blade, with described vanes fixed;

Guard shield, it is configured between this housing and this grid, and covering this turbofan, and this guard shield comprises: peristome, this peristome is drawn cold air; Perforate, this perforate are formed on an end of this peristome; Rake, this rake form from an end of this perforate to tilt towards this grid; And the par, this par forms and this rake one, and is configured to and this grid constant space of being separated by, and wherein, an end of this par of connection of this rake and the spacing between this grid equal the spacing between this par and this grid; And

Evaporimeter, it is disposed at the below of this turbofan, to produce cold air.