CN101821569B

CN101821569B - Refrigerator

Info

Publication number: CN101821569B
Application number: CN200880110891.9A
Authority: CN
Inventors: 金山在勇; 吉村宏
Original assignee: Sharp Corp
Current assignee: Sharp Corp
Priority date: 2007-10-11
Filing date: 2008-10-03
Publication date: 2013-12-25
Anticipated expiration: 2028-10-03
Also published as: WO2009048023A1; CN101821569A; JP2009092340A; MY154422A

Abstract

A refrigerator has a storage compartment (3) for cooling and storing articles, a cooler (5) for generating cool air, a discharge passage (20) allowing the cool air generated by the cooler (5) to flow along the rear surface of the storage compartment (3) and having a discharge opening (20c) for discharging the cool air, a return passage (23) placed parallel to the discharge passage (20), having return openings (23a, 23b) into which the cool air flows from the storage compartment (3), and allowing the cool air flowing from the return ports (23a, 23b) to return to the cooler (5), and a member (27) formed of a good thermal conductor disposed on those sides of the discharge passage (20) and the return passage (23) which face the storage compartment (3). The discharge passage (20) and the return passage (23) are merged together on the downstream side of the return ports (23a, 23b).

Description

Refrigerator

Technical field

The present invention relates to have the cold air will generated by condenser is discharged to the drain passageway in storeroom and cold air is turned back to the refrigerator of the return path of condenser from storeroom.

Background technology

Refrigerator in the past is open in patent documentation 1.Fig. 9, Figure 10 mean main cutaway view and the side sectional view that the summary of this refrigerator forms.Refrigerator 1 is provided with refrigerating chamber 2 on top, be provided with refrigerating chamber 3 below refrigerating chamber 2.The partition wall 4 that refrigerating chamber 2 and refrigerating chamber 3 have been filled heat-barrier material separates.The front of refrigerating chamber 2 is opened and closed by door 2a, and the front of refrigerating chamber 3 is opened and closed by door 3a.

Dispose the condenser 5 that generates cold air at the back side of refrigerating chamber 2, be furnished with blowing fan 6 above condenser 5.Condenser 5 and blowing fan 6 are configured in the refrigerating chamber pipeline (not shown) at the back side that is arranged at refrigerating chamber 2.Be arranged on the below of condenser 5 in the face of the return port (not shown) of refrigerating chamber 3 openings in the refrigerating chamber pipeline.

Be provided with the access 7 linked with the exhaust side of blowing fan 6 in the side of condenser 5.Central portion at the left and right directions at the back side of refrigerating chamber 3 is provided with along vertical the drain passageway 8 be communicated with access 7 with extending.Discharge the both sides of the outlet 8a opening of cold air at drain passageway 8.Be provided with the return path 9 had at the return port 9a of the open front of refrigerating chamber 3 in partition wall 4.Return path 9 is connected with the refrigerating chamber pipeline of refrigerating chamber 3 below condenser 5.

In the refrigerator 1 of above-mentioned formation, carry out heat exchange with condenser 5 and the cold air that generates by driving blowing fan 6 to be discharged in refrigerating chamber 2 as shown in arrow D1.The cold air be discharged in refrigerating chamber 2 carrys out the cold storage thing in the interior circulation of refrigerating chamber 2, and turns back to condenser 5 via the return port of refrigerating chamber pipeline.

In addition, the cold air circulated in the refrigerating chamber pipeline, at the exhaust side fork of blowing fan 6, circulates and circulation in drain passageway 8 as shown in arrow D2 in access 7.Cold air in circulation in drain passageway 8 is discharged in refrigerating chamber 3 from outlet 8a as shown in arrow D3.The cold air be discharged in refrigerating chamber 3 carrys out the cold storage thing in the interior circulation of refrigerating chamber 3, and the front portion at refrigerating chamber 3 as shown in arrow D4 flow into return path 9 from return port 9a.In return path 9, cold air refrigerating chamber pipeline via refrigerating chamber 3 as shown in arrow D5 of circulation turns back to condenser 5.

Patent documentation 1: Japan's special permission No. 3892814 communique (the 4th page～the 8th page, Fig. 1)

But, according to above-mentioned refrigerator 1 in the past, the moisture that the cold air of circulation comprises reserve during refrigerating chamber 3 interior circulations in return path 9 etc., thereby easily freeze.Therefore, the heat-barrier material of the specific thickness setting up and down of return path 9 that need to be in partition wall 4, and make the thickness of partition wall 4 become large.Therefore, the internal volume of refrigerator 1 diminishes, and has the problem of volumetric efficiency step-down.

Summary of the invention

The object of the present invention is to provide a kind of refrigerator that can improve volumetric efficiency.

In order to reach above-mentioned purpose, the invention is characterized in, a kind of refrigerator has: the storeroom that reserve is carried out to cooling preservation, generate the condenser of cold air, the cold air that makes to be generated by above-mentioned condenser circulate along the back side of storeroom and has the drain passageway of the outlet of discharge cold air, be set up in parallel with above-mentioned drain passageway and have from above-mentioned storeroom and flow into the return port of cold air and will turn back to from the cold air of above-mentioned return port inflow the return path of above-mentioned condenser, be configured in the side in the face of above-mentioned storeroom of above-mentioned drain passageway and above-mentioned return path and the parts that formed by good heat conductor, wherein, in the downstream of above-mentioned return port, make above-mentioned drain passageway and above-mentioned return path converge.

According to this, form, the cold air generated by condenser circulates in the drain passageway at the back side that is arranged at storeroom, and a part of cold air is discharged in storeroom from outlet.The cold air be discharged in storeroom circulates and the cold storage thing in storeroom, and flow into the return path be set up in parallel on drain passageway via return port.The residue cold air circulated in drain passageway converges at downstream and the return path of return port.The cold air circulated in return path turns back to condenser.The cold energy of the cold air circulated in drain passageway and return path in addition, is released in storeroom via the parts that consist of good thermal conductor such as metallic plates.

In addition, the present invention, in the refrigerator of above-mentioned formation, is characterized in that, in two sides of above-mentioned return path, configures respectively above-mentioned drain passageway, makes above-mentioned drain passageway bend to the U font near above-mentioned return port and converges with above-mentioned return path.According to this, form, the central portion at the back side of storeroom arranges return path, in the left and right of return path, drain passageway is set.The cold air circulated in drain passageway at one end bends to the U font and converges with return path.

In addition, the present invention is in the refrigerator of above-mentioned formation, it is characterized in that, cold air guide plate by downward-extension near the edge configured above-mentioned return port is separated above-mentioned drain passageway and above-mentioned return path, and above-mentioned return path has the those widened sections broadened above above-mentioned cold air guide plate, the raised line of separating above-mentioned drain passageway and above-mentioned return path extends the side that is arranged on above-mentioned cold air guide plate.

According to this, form, the cold air circulated in drain passageway, along the raised line circulation between separation and those widened sections, at one end bends to the U font and circulates along the cold air guide plate.Circulate from return port flow into the path of cold air between the two cold air guide plates narrower than those widened sections of return path, at those widened sections and the cold air circulated in drain passageway, converge and turn back to condenser.

In addition, the present invention, in the refrigerator of above-mentioned formation, is characterized in that, above-mentioned return port is configured in the bottom of above-mentioned return path, and above-mentioned outlet is configured to than the top side of above-mentioned return port.According to this, form, the cold air that is discharged to storeroom from the outlet that is configured in drain passageway top descends and is directed to return port in storeroom.

In addition, the present invention, in the refrigerator of above-mentioned formation, is characterized in that, on the top of above-mentioned storeroom, is provided with isolation ward, and above-mentioned outlet flows out and descends from the place ahead of above-mentioned isolation ward at above-mentioned isolation ward opening and the cold air that is discharged to above-mentioned isolation ward.According to this, form, the cold air that is discharged to isolation ward from the outlet that is configured in drain passageway top flows out from isolation ward the place ahead, descends in storeroom and is directed to return port.

In addition, the present invention, in the refrigerator of above-mentioned formation, is characterized in that, by having along a plurality of paths of upper downward-extension and being arranged on the pipeline at the back side of above-mentioned storeroom, above-mentioned drain passageway and above-mentioned return path formed as one.

In addition, the present invention, in the refrigerator of above-mentioned formation, is characterized in that, is provided with refrigerating chamber and the above-mentioned condenser arrangement back side at above-mentioned refrigerating chamber above above-mentioned storeroom.

According to the present invention, be set up in parallel the drain passageway of discharging cold air and the return path that cold air is turned back to condenser at the back side of storeroom, so just can dwindle the thickness of partition wall without return path is set on the partition wall with other storerooms.Therefore, can improve the volumetric efficiency of refrigerator.In addition, the cold energy of the cold air circulated in drain passageway and return path carries out heat conduction to parts and emits from the relative broad range at the back side of storeroom, so cold storage is indoor equably.And then, because downstream drain passageway and return path at return port converge, thus the air conditioning quantity that is discharged to storeroom from outlet reduced, and reserve mainly is indirectly cooled by the cold energy of emitting from parts.Therefore, can reduce the drying of reserve.

According to the present invention, bend to the U font and converge with return path near return path at two sides configurations drain passageways and the drain passageway of return path, so drain passageway can be formed in wider scope.Therefore, can via parts, cold energy be released to storeroom from wider scope, can make the temperature of storeroom more even respectively.

In addition, according to the present invention, the raised line of separating drain passageway and return path is extended and is arranged on the side that is arranged near cold air guide plate return port, so the drain passageway that can realize simply bending to the U font and converge at downstream and the return path of return port.

In addition, according to the present invention, return port is configured in to the bottom of return path and outlet is arranged to than the top side of return port, so the cold air of discharging from outlet is directed to return port because deadweight descends.Therefore, can make cold air easily circulate in storeroom.

In addition, according to the present invention, by outlet at the isolation ward opening on the top of storeroom and the cold air that makes to be discharged to isolation ward flow out and descend from the place ahead of isolation ward, so isolation ward easily can be maintained to low temperature than other zones.In addition, the cold air of discharging from the outlet on storeroom top flows out from the return port of storeroom bottom, so can prevent short circuit.

In addition, according to the present invention, owing to by the pipeline that there are a plurality of paths and be arranged on wall, drain passageway and return path being formed as one, so can reduce components number and can simple realization be set up in parallel the refrigerator of drain passageway and return path.

In addition, according to the present invention, at the back side of being located at the refrigerating chamber above storeroom, dispose condenser, thus cold air easily can be guided to drain passageway from condenser, and cold air is easily guided to condenser from return path.Therefore, can reduce the pressure loss in the path of cold air circulation.In addition, if on the partition wall of separating storeroom and refrigerating chamber, return path is set, the refrigerating chamber by low temperature easily freezes the moisture in cold air, but because return path is arranged on the back side, so can prevent from easily freezing.

The accompanying drawing explanation

Fig. 1 means the side sectional view of the refrigerator of embodiments of the present invention.

Fig. 2 means the main cutaway view of the refrigerator of embodiments of the present invention.

Fig. 3 is the A-A cutaway view of Fig. 2.

Fig. 4 is the details drawing of wanting section of Fig. 3.

Fig. 5 means the side sectional view of detailed formation of protuberance of the refrigerator of embodiments of the present invention.

Fig. 6 means by the side sectional view in the cross section of the drain passageway of the refrigerator of embodiment of the present invention.

Fig. 7 is the B-B cutaway view of Fig. 2.

Fig. 8 means by the side sectional view in the cross section of the return path of the refrigerator of embodiments of the present invention.

Fig. 9 means the main cutaway view of refrigerator in the past.

Figure 10 means the side sectional view of refrigerator in the past.

Description of reference numerals is as follows:

1 refrigerator; 2 refrigerating chambers; 3 refrigerating chambers; 4 partition walls; 5 condensers; 6 blowing fans; 7 access; 8,20 drain passageways; 8a, 20a outlet; 9,23 return paths; 9a, 23a, 23b return port; 10 refrigerating chamber pipelines; 11 drain pans; 12 drainpipes; 13 mounting plates; 14 separating parts; The 14b peristome; 15 containing boxs; 16 vegetable compartment; 17 refrigerator air doors; 18 cryogenic boxes; 20 drain passageways; The 20c outlet; 21 left paths; 22 right paths; 23 return paths; 23c, 23d cold air guide plate; The 23g those widened sections; The 23e interconnecting part; 24 first minutes branch roads; 25 second minutes branch roads; 26 pipelines; 26d, 26e raised line; 27 parts; 30 lamps; 31 lampshades; 33,36 panels; The 33a protuberance; 34 support units; The 34a recess; 35 heat insulating boxes; Case in 35a.

The specific embodiment

Below, illustrate referring to the drawings embodiments of the present invention.For convenience of explanation, the Fig. 9 with above-mentioned, part that the conventional example shown in Figure 10 is identical are marked to identical Reference numeral.Fig. 1, Fig. 2 mean side sectional view and the main cutaway view of the refrigerator of an embodiment.Refrigerator 1 is provided with refrigerating chamber 2 on top, be provided with refrigerating chamber 3 (storeroom) below refrigerating chamber 2.Refrigerating chamber 2 and refrigerating chamber 3 have been filled the partition wall 4 of heat-barrier material and have separated.The front of refrigerating chamber 2 is opened and closed by door 2a, and the front of refrigerating chamber 3 is opened and closed by door 3a.

Be provided with refrigerating chamber pipeline 10 at the back side of refrigerating chamber 2.Top in refrigerating chamber pipeline 10 front face side is provided with outlet 10a, is provided with return port 10b in bottom.Be furnished with the condenser 5 that generates cold air in refrigerating chamber pipeline 10, be furnished with blowing fan 6 above condenser 5.Be provided with the drain pan 11 of the defrost water that reclaims condenser 5 below condenser 5.In addition, refrigerating chamber pipeline 10 diverges and has right-hand access 7 that is configured in condenser 5 at the exhaust side of blowing fan 6.

Dispose the cryogenic box 18 that can preserve with low temperature such as refrigerated storage temperature bands on the top of refrigerating chamber 3.The backside openings of cryogenic box 18, flow into cold air from outlet 20c described later.Be provided with the demarcation strip 13b formed by synthetic resin below cryogenic box 18.The chamber door 18a that the Bei Yi upper end, the place ahead of cryogenic box 18 is supported by axle covers.

If cryogenic box 18 is forwards extracted out, the front that chamber door 18a forms along the curved surface of cryogenic box 18 is rotated and is opened.Therefore, utilize chamber door 18a and demarcation strip 13b to form isolation ward 18b on the top of refrigerating chamber 3, cryogenic box 18 is incorporated in isolation ward 18b.

Be provided with below demarcation strip 13b by transparent synthetic resin and form and for loading a plurality of mounting plates 13 of reserve.Mounting plate 13 is placed on above the outstanding a plurality of guide rail 13a that arrange of sidewall of refrigerating chamber 3, and can make position and the reserve suitably change matchingly of short transverse.

Be provided with the vegetable compartment 16 formed by isolation ward in the bottom of refrigerating chamber 3.Vegetable compartment 16 utilizes the tabular separating part 14 formed by synthetic resin to separate with the top of refrigerating chamber 3.The upper and lower interconnecting part 14a by separating part 14 the place aheads of separating part 14 is communicated with.In addition, be provided with peristome 14b in the rear end of separating part 14.Block top containing box 15 and can be configured in vegetable compartment 16 with freeing in and out being separated section 14.Containing box 15 be configured to and the wall of vegetable compartment 16 between there is the gap 16a of cold air circulation.

Be set side by side with the drain passageway 20 and the return path 23 that extend along vertical at the back side of refrigerating chamber 3.Drain passageway 20 and return path 23 are that the pipeline 26 that will have a plurality of paths is arranged on the back wall of refrigerating chamber 3 and forms.Drain passageway 20 makes outlet 20c at the upper opening in the face of isolation ward 18b (with reference to Fig. 1), and has left path 21 and the right path 22 configured respectively in the left and right of return path 23.

Be provided with the horizontal passageway 28 of forwards giving prominence to and extending transversely in the lower end of drain passageway 20 and return path 23.

Return port

23a, 23b (with reference to Fig. 5) are respectively in front and the lower aperture of horizontal passageway 28.Horizontal passageway 28 is communicated with return path 23 via interconnecting part 23e (with reference to Fig. 5).The cold air that flow into horizontal passageway 28 from

return port

23a, 23b circulates return path 23 via interconnecting part 23e.

In return path 23, the those widened sections 23g that widens duct width is set above the bottom 23f that is provided with interconnecting part 23e.Bottom 23f is divided into left path 21 and right path 22 by cold air guide plate 23c, the 23d with pipeline 6 one.Those widened sections 23g is divided into left path 21 and right path 22 by raised

line

26d, 26e with pipeline 6 one.

Raised

line

26d, 26e extend setting downwards until the side of cold air guide plate 23c, 23d.Thus, left path 21 and right path 22 bend to the U font in lower end, in the downstream of

return port

23a, 23b and the those widened sections 26f of return path 23, converge.

Dispose the lamp 30 that front is covered with transparent lampshade 31 in the place ahead, top of return path 23.Because mounting plate 13 consists of transparent resin, so the emergent light of lamp 30 sees through each mounting plate 13.Thus, can the throw light on bottom of refrigerating chamber 3.In addition, lamp 30 is configured in the top of metal parts 27 described later.Therefore, the emergent light of lamp 30 is reflected by parts 27, can make in refrigerating chamber 3 brighter.

If at mounting plate 13, opening is set, illumination light can easily arrive the bottom of refrigerating chamber 3.The cold air that in addition, each can be loaded to 13 of plates guides to lower floor further cold storage thing.Now, also can be provided for the flange shape projection of reinforcing in the around openings of mounting plate 13.In addition, if the mode with the below that covers lamp 30 configures by transparent lampshade 30, the emergent light of lamp 30 becomes and easily arrives the bottom of refrigerating chamber 3.

In addition, in return path 23, the cold energy of the cold air of circulation is released in lampshade 31 via panel 33 described later (with reference to Fig. 4).The intensification of the refrigerating chamber 3 thus, can cool down lamp 30 caused with the heating reduced because of lamp 30.Also can be at the interior control part that the driving of controlling lamp 30 is set of lampshade 31, and lampshade 31 is interior as electric mounting box.Now, the heating in electric mounting box also can be cooled by the cold energy of the cold air of circulation in return path 23.

In addition, also the peristome in the face of return path 23 can be arranged in lampshade 31.Thus, via peristome, the air in lampshade 31 is inhaled into return path 23.Therefore, can further reduce the intensification of the refrigerating chamber 3 that the heating of lamp 30 causes.

The A-A cutaway view of Fig. 3 presentation graphs 2.Pipeline 26 consists of heat-barrier materials such as foamed heat-insulating materials, and raised

line

26d, 26e and cold

air guide plate

23c, 23d and pipeline 26 are one-body molded.Thus, drain passageway 20 and return path 23 form as one, and can reduce components number.

Raised line 26d, the 26e that each path of pipeline 26 is consisted of heat-barrier material and cold

air guide plate

23c, 23d separate.Therefore, even have temperature difference in the cold air of the cold air circulated and circulation in return path 23 in drain passageway 20, the exchange capacity of the cold energy between them is also few.The cold energy that therefore, can prevent in drain passageway 20 cold air of circulation is delivered to the cold air of circulation in return path 23 and the decline of the cooling effectiveness of the refrigerating chamber 3 that causes.

Fig. 4 illustrates the details drawing of wanting section of Fig. 3.The front face side of pipeline 26 is covered by the panel 33 of synthetic resin.Pipeline 26 and panel 33 be by being arranged at the recess gone up separately and protuberance (all not shown) engaging becomes one, and detachable be arranged on the back side of refrigerating chamber 3.The both side ends of panel 33 is rearward crooked, and covers the side of pipeline 26.

The front face side of panel 33 is covered by tabular parts 27.Parts 27 are formed by the metallic plates such as aluminium, stainless steel, excellent heat conductivity bodies such as resin plate that pyroconductivity is high.The rearward bending of the both side ends of parts 27 and the side of cover plate.

The cold energy of the cold air that utilizes parts 27 to circulate in drain passageway 20 and return path 23 is released in refrigerating chamber 3.Thus, can make the uniformity of temperature profile of refrigerating chamber 3.The temperature (approximately-12～-8 ℃) of the cold air now, circulated in drain passageway 20 is lower than the temperature (approximately-2～1 ℃) of the cold air of circulation in return path 23.But, because drain passageway 20 and return path 23 are set up in parallel, so the surface of parts 27 is conducted and become the same temperature by heat, can easily make the Temperature Distribution of refrigerating chamber 3 become even.

In addition, in pipeline 26, the rear side in the face of the heat-barrier material of return path 23 is provided with recess 26c.Thus, and compare in the face of the part of drain passageway 20, in the face of the thickness of the heat-barrier material of the part of return path 23 is formed thinlyyer.Therefore, can by from return path 23, be delivered to parts 27 per unit area cold energy and become same degree from the cold energy that drain passageway 20 is delivered to the per unit area of parts 27.Therefore, due to the deviation that can further reduce the surface temperature of parts 27, so can make the Temperature Distribution of refrigerating chamber 3 more even.In addition, thickening, in the face of the thickness of the heat-barrier material of the drain passageway 20 that more cold air of low temperature circulates, can suppress the dewfall on parts 27 surfaces.

In addition, also recess 26c can be arranged a plurality of.In addition, can also on heat-barrier material, form through hole to replace recess 26c.Equally, also the thickness of panel 33 can be compared with the part in the face of drain passageway 20, will be formed thinly in the face of the part of return path 23.

Be provided with forwards outstanding protuberance 33a in the bottom of panel 33.Fig. 5 means the side sectional view of the details of protuberance 33a.Form horizontal passageway 28 by protuberance 33a, in front and the bottom of protuberance 33a, form return port 23a, 23b.Return port 23b forms in the face of peristome 14b ground, and

return port

23a, 23b are configured in the upside of separating part 14.

Below protuberance 33a, front portion is provided with downwards outstanding protuberance 33b.The end difference 35b that protuberance 33a is formed by the interior case 35a at heat insulating box 35 locks rear end, the top butt of protuberance 33b and separating part 14.Thus, protuberance 33a is stably supported.

Protuberance 33a more forwards extends than parts 27 and is formed on the below of parts 27.The lower end of parts 27 is supported by the support portion 33c forwards extended from panel 33 above protuberance 33a.On protuberance 33a, formation notch 33d is equipped with support unit 34 on notch 33d.

Support unit 34 consists of synthetic resin, and is formed with the recess 34a of opening in the above.Periphery at recess 34a forms outstanding laterally protuberance 34c.The below of fore protuberance 34c is provided with protuberance 34d.The protuberance 34c at rear portion is inserted in the slot part 33e on the vertical plane that is arranged on panel 33, protuberance 34b is pressed in notch 33d.Thus, utilize the front end of anterior protuberance 33c and protuberance 34b clamping notch 33d, carry out mounting support parts 34.

Because protuberance 33a is configured in the below of parts 27, so the dewfall produced in parts 27 flows down along recess 34a.Thus, accumulate in the dew evaporation in recess 34a, can suppress the drying in refrigerating chamber 3.If utilize encapsulant etc. bondd or weld support unit 34 and notch 33d, can invade protuberance 33a inside by Antidewing water.

Concavo-convex that along continuous straight runs extends also can be set in the front of parts 27, by this concavo-convex dewfall produced in parts 27 that remains on.Thus, can further be suppressed the drying in refrigerating chamber 3 by the evaporation of the dew of the concavo-convex maintenance on parts 27 surfaces.

In addition, the following protuberance 33b that catches recess 34a and protuberance 33a with finger is dismounting panel 33 easily just.

Fig. 6 means by the side sectional view in the cross section of drain passageway 20.Drain passageway 20 is communicated with access 7 via refrigerator air door 17 on top.In addition, Fig. 7 illustrates the B-B cutaway view of Fig. 2.Drain passageway 20 has the branching portion 20a of the front face side that is configured in return path 23 below refrigerator air door 17.Drain passageway 20 is branched left path 21 and the right path 22 (with reference to Fig. 2) that the 20a of section is divided into left and right.

In Fig. 2, return path 23 has first, second

minute branch road

24,25 that is divided into left and right on the top of those widened sections 23g.Fig. 8 means by the side sectional view in the cross section of return path 23.First, second

minute branch road

24,25 is configured in the rear side of refrigerating chamber pipeline 10.Below condenser 5, via connected entrance 24a, the 25a of the rear side opening at refrigerating chamber pipeline 10, refrigerating chamber pipeline 10 and first, second

minute branch road

24,25 are communicated with.

Dispose the receiving portion 12a of drainpipe 12 below the discharge outlet 11a of drain pan 11.As shown in Figure 8, receiving portion 12a is configured in the place ahead of first, second minute branch road 24,25.Drainpipe 12 is from receiving portion 12a through rearward extending between first, second

minute branch road

24,25, and extend downwards the behind that is configured in return path 23.The defrost water accumulated in drain pan 11 is discharged to evaporating pan (not shown) via drainpipe 12.Therefore, return path 23 branches into first, second

minute branch road

24,25 and does not dwindle flow path area, just can prevent simply the interference of return path 23 and drainpipe 12.

In addition, in above-mentioned Fig. 4, drainpipe 12 forms the thickness of about 20mm at the thermal insulation layer of refrigerating chamber 3 sides along the side face of drainpipe 12.Thus, even the temperature of mobile cold air is-3 ℃ of left and right in return path 23, also can prevent the obstruction of the blast pipe that freezes to cause 12 of the defrost water in drainpipe 12.And then the temperature that can suppress the cold air of the return path 23 that defrost water causes rises and reduces thermal losses, can realize energy-saving.

In the refrigerator 1 of above-mentioned formation, the air circulated in refrigerating chamber pipeline 10 by driving blowing fan 6 and condenser 5 carry out heat exchange and generate cold air.The cold air generated by condenser 5 is discharged in refrigerating chamber 2 as shown in arrow E (with reference to Fig. 1) from outlet 10a.The cold air that is discharged to refrigerating chamber 2 is in the interior circulation of refrigerating chamber 2 and the cold storage thing, and turns back to condenser 5 via return port 10b.

In addition, at the exhaust side of blowing fan 6, cold air is branch as shown in arrow E 2 (with reference to Fig. 2, Fig. 6), and circulation in access 7.In access 7, the cold air of circulation flow into drain passageway 20 and branch in branching portion 20a via refrigerator air door 17.A part that flow into the cold air of drain passageway 20 is discharged in cryogenic box 18 and isolation ward 18b via outlet 20c from branching portion 20a as shown in arrow E 3 (with reference to Fig. 1).

For the cold air by passing through refrigerator air door 17, directly supply with in large quantities, cryogenic box 18 and isolation ward 18b are maintained in low temperature.The cold air circulated in cryogenic box 18 and isolation ward 18b flows in refrigerating chamber 3 from the front face side of the bottom of isolation ward 18b and the rear of demarcation strip 13b.

In addition, the cold energy of the cold air in isolation ward 18b is emitted downwards below demarcation strip 13b with the cold energy of the reserve be cooled.The reserve configured below demarcation strip 13b is directly cooling by the cold air of the place ahead from demarcation strip 13b and rear decline, and is indirectly cooled by the cold energy of emitting below demarcation strip 13b.

Cold air in branching portion 20a branch flows down left path 21 and the right path 22 of drain passageway 20 as shown in arrow E 4, E5 (with reference to Fig. 2, Fig. 6) along raised line 26d, 26e.The cold air that flows down left path 21 and right path 22 changes towards in lower end and rises along cold air guide plate 23c, 23d.The cold air risen in left path 21 and right path 22 converges at those widened sections 23g and return path 20.

By cold

air guide plate

23c, 23d, can prevent because of flow down left path 21 and right path 22 center side change towards the generation of the eddy current that causes of the collision of cold airflow (E4, E5).In addition, can prevent the leakage from the cold air of return port 23a, 23b.Therefore, can suppress the to blow decline of efficiency and the decline of cooling effectiveness.

The cold air flow in refrigerating chamber 3 from isolation ward 18b descends as shown in arrow E 8 (with reference to Fig. 1, Fig. 6) in the place ahead of mounting plate 13.The part of the cold air descended in the front portion of refrigerating chamber 4 is rearward circulation as shown in arrow E 9 (with reference to Fig. 1) on separating part 14.On separating part 14, the cold air of circulation flow into horizontal passageway 28 from the return port 23a of face side, and guides to return path 23 via interconnecting part 23e.

The part of the cold air descended in the front portion of refrigerating chamber 3 in addition, flow in vegetable compartment 16 via the interconnecting part 14a in the place ahead of separating part 14.The cold air that flow into vegetable compartment 16 circulates as shown in arrow E 10 (with reference to Fig. 1) in the gap 16a around containing box 15.And gap 16a also is formed on the side of containing box 15.

Peristome 14b at the cold air circulated around containing box 15 via rear circulates above separating part 14.Then, this cold air return port 23b of side below horizontal passageway 28 flow into horizontal passageway 28, and guides to return path 23 via interconnecting part 23e.Containing box 15 utilizes along the reserve of the indirect cooled interior of cold air (E10) circulated in the cold air (E9) of blocking 14 circulations of top separating part and gap 16a around.

The cold air that flow into return path 23 rises as shown in arrow E 11 (with reference to Fig. 2, Fig. 8).The cold air risen in return path 23 converges and further rises at those widened sections 23g with the cold air risen in drain passageway 20.Then, be divided into first, second

minute branch road

24,25 as shown in arrow E 12, E13 (with reference to Fig. 2, Fig. 8).The cold air circulated in

branch road

24,25 at first, second minute flow into refrigerating chamber pipeline 10 via

connected entrance

24a, 25a, and turns back to condenser 5.

In order to make cold air turn back to condenser 5 via the connected entrance 24a, the 25a that are arranged on left and right, by the aperture area by

connected entrance

24a, 25a, suitably form, can adjust the air conditioning quantity that turns back to condenser 5.Thus, the state of the band frost of condenser 5 can be easily adjusted, frost can be on left and right directions, adhered to equably.

Therefore, the efficiency of defrosting can be improved, the power saving that the shortening by defrosting time brings can be realized.Especially in the situation that the width on the left and right directions of condenser 5 is large, this effect is large.Therefore, if increase the width on the left and right directions of condenser 5, the heat exchange amount increase of condenser 5 realizes the raising of cooling effectiveness and the power consumption can suppress to defrost the time.

In addition, in drain passageway 20 and return path 23, the cold energy of the cold air of circulation is released in refrigerating chamber 3 via parts 27.Thus, in refrigerating chamber 3, be indirectly cooled.By parts 27 indirectly cooling cold air along the front of parts 27, because of deadweight, descend.Upper face forward at mounting plate 13 in the time of by the cold air cold storage thing of parts 27 cold air flows.

Therefore, by demarcation strip 13 and separating part 14 folders every space, by adjacent mounting plate 13 folders every space, by mounting plate 13 and separating part 14 folders every the air on top in space flow to rear indirectly cooling by parts 27 from the place ahead.Thus, produce convection current in each space.In mounting, flow to above plate 13 below cold airflow (E8) that the cold air in the place ahead and the place ahead along mounting plate 13 flow down converges and flows to.

Thus, also can carry out the indirectly cooling of each space from the cold energy from parts 27 of emitting equably in the relative broad range of refrigerating chamber 3, equably cooling each space.Thus, can do one's utmost to suppress cold air and directly contact the reserve drying that reserve causes.That especially can suppress that the drying of the thing (for example, dessert, Japanese dessert, vegetables, fruit etc.) because giving birth to causes degenerates.

In addition, near the door 3a of refrigerating chamber 3, the part of relatively warm indoor air rises along door 3a, and mixes and flow to below with cold air that demarcation strip 13b from refrigerating chamber 3 tops forwards circulates.Therefore, carry out convection current between door 3a and demarcation strip 13b and mounting plate 13 and produce circular flow.Thus, the front portion of refrigerating chamber 3 is stirred indoor by circular flow, can make indoor more uniform temperature.

In addition, as in above-mentioned Fig. 6 by as shown in chain-dotted line, the outlet 20b of a small amount of cold air of from drain passageway 20 to refrigerating chamber 3 interior discharges also can be set.The cold air of discharging from the outlet 20b be arranged between each demarcation strip 13b circulates as shown in arrow E 6, E7 between each demarcation strip 13b.Thus, can further stir 13 of each demarcation strips in refrigerating chamber 3 and can carry out cooling.

Especially, if cold air is discharged on a small quantity from outlet 20b in the mode that flows to below from top along the back side of refrigerating chamber 3, can play larger effect.If outlet 20b is set to be reduced by the inhibition of the parts 27 indirect cooling dryings that cause.But, form parts 27 in the mode with moistening effect that dewfall causes as described later, can become less by the reduction of dry inhibition.

The moisture of the air outside the moisture evaporated the reserve in refrigerator, the refrigerator that flows into because of the switching of door 3a is cooling by parts 27, and at the surface sweating of parts 27.Now, if be formed with concaveconvex shape on the surface of parts 27, can keep dew.Thus, the dry cold air that dew evaporation and being added to is flowed out from isolation ward 18b and by the cold energy of parts 27 cooling drier cold air.Therefore, the humidity in refrigerator can be kept suitably, can protect the reserve in refrigerator not to be subject to dry impact, can prevent that reserve is because of degenerating that drying causes.

In addition, in the present embodiment, only the part in the front of drain passageway 20 and return path 23 arranges parts 27, but also can cover with parts 27 top and the front of drain passageways 20 and return path 23.In addition, also parts 27 can be extended to the side that be set to drain passageway 20 etc.Thus, cold energy can be released to more in wide region and make Temperature Distribution more even.

In addition, in above-mentioned Fig. 5, be preferably in protuberance 33a the ventilation block pieces such as filter is set.Thus, the cold air in the refrigerating chamber 3 that comprises vegetable compartment 16 flow into horizontal passageway 28 equably from return port 23a, 23b.Thus, can also make the cold air in vegetable compartment 16 circulate equably.

And then, if

return port

23a, 23b are arranged discretely on left and right directions a plurality of, the circulating cold air in refrigerator is more even.And, according to the aperture area of

return port

23a, 23b, can change the flow of the cold air that flow into return port 23a, 23b.In the present embodiment, the aperture area of the open area ratio return port 23b of return port 23a is dwindled, such as being about 30%.Therefore, in vegetable compartment 16, the cold air flow of the cold air (E10) of circulation becomes more than the air conditioning quantity of circulation above separating part 14, and can abundant cooling vegetable compartment 16.

In addition, the corner part of the lower end of the corner part of the lower end of left path 21 and right path 22, the return path 23 that formed by cold

air guide plate

23c, 23d can be also curved surface.Thus, can prevent the generation of the eddy current that the collision of cold airflow causes.

According to present embodiment, same wall surface at refrigerating chamber 3 is that the back side is set up in parallel the drain passageway 20 of discharging cold air and the return path 23 that cold air is back to condenser 5, so without as example in the past, at the partition wall 4 with refrigerating chamber 2, return path being set, and can dwindle the thickness of partition wall 4.Thereby, can improve the volumetric efficiency of refrigerator 1.

Especially, due to refrigerating chamber 2 adjacency of partition wall 4 with low temperature, so, if on partition wall 4, return path is set, the moisture in cold air easily freezes, but because return path 23 is arranged on the back side, so can prevent from easily freezing.In addition, because condenser 5 is configured in the back side of refrigerating chamber 2, so easily cold air is guided to the drain passageway 20 at the back side from condenser 5, cold air is easily guided to condenser 5 from the return path 23 at the back side.Therefore, can reduce the pressure loss in the path of cold air circulation.In addition, also drain passageway 20 and return path 23 can be set up in parallel to the side wall surface at storeroom.

In addition, at the cold energy of the cold air circulated in drain passageway 20 and return path, carry out the heat conduction in the parts 27 that formed by good heat conductor, and emit from the relative broad range at the back side of refrigerating chamber 3, so equably in refrigerated compartment 3.And then, at the downstream of

return port

23a, 23b drain passageway 20 and return path 23, converge, therefore reduce 3 air conditioning quantity of discharging from outlet 20c to refrigerating chamber, and reserve is mainly indirectly cooling by the cold energy of emitting from parts 27.Thereby, can reduce the drying of reserve.

In addition, at the two sides of return path 23 configuration drain passageway 20 and drain passageway 20 is bent near return port 20a to the U font and make it to converge with return path 23, so drain passageway 20 can be formed to the relative broad range till below.Therefore, can via parts 27, cold energy be released to refrigerating chamber 3 from wide region more, can make the Temperature Distribution of refrigerating chamber 3 more even.

In addition, due to the bottom that return

port

23a, 23b is configured in to return path 23 and by outlet 20c, be arranged to the top side than

return port

23a, 23b, so the cold air of discharging from outlet 20c guides to return

port

23a, 23b because deadweight descends.Therefore, can make cold air easily circulation in refrigerating chamber 3.

In addition, outlet 20c is at the isolation ward 18b on the top of refrigerating chamber 3 opening, and the cold air that is discharged to isolation ward 18b flows out and descends from the place ahead of isolation ward 18b, so isolation ward 18b easily can be maintained than other regional low temperature.In addition, the cold air of discharging due to the outlet 20c from refrigerating chamber 3 tops flows out from return port 23a, the 23b of refrigerating chamber 3 bottoms, so can prevent short circuit.

In the present embodiment, also return path 23 can be extended and is set in vegetable compartment 16 and return port 23b is arranged in vegetable compartment 16.

According to the present invention, can be applicable to have and will discharge the drain passageway of cold air and cold air be turned back to the refrigerator of the return path of condenser.

Claims

1. a refrigerator, it is characterized in that, have: to reserve carry out cooling preservation storeroom, the condenser that generates cold air, the cold air that makes to be generated by above-mentioned condenser circulate along the back side of storeroom and there is the drain passageway of the outlet of discharging cold air, be set up in parallel with above-mentioned drain passageway and have from above-mentioned storeroom flow into the return port of cold air and the cold air that will flow into from above-mentioned return port turn back to above-mentioned condenser return path, be configured in a side of facing above-mentioned storeroom of above-mentioned drain passageway and above-mentioned return path and the parts that formed by good heat conductor

Two sides at above-mentioned return path configure respectively above-mentioned drain passageway,

By near above-mentioned return port, configure along on the cold air guide plate of downward-extension separate above-mentioned drain passageway and above-mentioned return path, and above-mentioned return path has the those widened sections broadened above above-mentioned cold air guide plate,

The raised line of separating above-mentioned drain passageway and above-mentioned those widened sections extends the side that is arranged on above-mentioned cold air guide plate, makes above-mentioned drain passageway bend to the U font near above-mentioned return port and make it to converge at downstream and the above-mentioned return path of above-mentioned return port.

2. refrigerator according to claim 1, is characterized in that, above-mentioned return port is configured in the bottom of above-mentioned return path, and above-mentioned outlet is configured to than the top side of above-mentioned return port.

3. refrigerator according to claim 2, is characterized in that, on the top of above-mentioned storeroom, is provided with isolation ward, and above-mentioned outlet flows out and descends from the place ahead of above-mentioned isolation ward at above-mentioned isolation ward opening and the cold air that is discharged to above-mentioned isolation ward.

4. refrigerator according to claim 1, is characterized in that, by having along a plurality of paths of upper downward-extension and being arranged on the pipeline at the back side of above-mentioned storeroom, above-mentioned drain passageway and above-mentioned return path formed as one.

5. refrigerator according to claim 1, is characterized in that, is provided with refrigerating chamber above above-mentioned storeroom, and above-mentioned condenser arrangement is at the back side of above-mentioned refrigerating chamber.