CN102338528A

CN102338528A - Refrigerator

Info

Publication number: CN102338528A
Application number: CN2011101980094A
Authority: CN
Inventors: 堀井慎一; 汤浅雅司; 森内利幸; 小野绫一
Original assignee: Matsushita Electric Industrial Co Ltd
Current assignee: Panasonic Intellectual Property Management Co Ltd
Priority date: 2010-07-12
Filing date: 2011-07-11
Publication date: 2012-02-01
Anticipated expiration: 2031-07-11
Also published as: JP5625561B2; CN103003650A; CN102338528B; EP2594871A1; EP2594871A4; JP2012021658A; EP2594871B1; WO2012008092A1; CN103003650B

Abstract

The invention provides a refrigerator, which can configure a duct of a cool air path for refrigerating a refrigerating chamber on a back face, simplify the refrigerating air path and ensure a proper air amount to integrally form a discharge duct communicated with the duct in a switchable compartment. A plurality of exhaust ports are configured to uniformly cool the switchable compartment to a proper temperature; and foreign materials are prevented from entering into the duct. The refrigerator is provided with: a top cold storage compartment 35; a lower freezing compartment 37; a switchable compartment 36 disposed between the cold storage compartment 35 and the lower freezing compartment 37; a cooler 44 disposed behind the freezing compartment 37 for generating cool air; a fan 46 provided above the cooler for forcibly blowing the cool air to the compartment; a duct device 49 for blowing cool air into the cold storage compartment and the switchable compartment 36; and a partition wall 42 for separating the cold storage compartment and the switchable compartment in such a manner that the compartments are arranged vertically on top of each other. The duct device 49 is disposed on a back surface of the switchable compartment 36 for and a discharge duct discharging the cool air to the switchable compartment 36 is formed on a lower surface of the partition wall 42 connected to the duct device 49.

Description

Refrigerator

Technical field

The present invention relates to make cold air forced circulation that generates by refrigerator and the refrigerator that each different storeroom of temperature band is freezed.

Background technology

Figure 14 is the longitudinal section of existing refrigerator.

Refrigerator shown in figure 14, that casing 1 expression is made up of the body of thermal insulating box 5 that between interior case 2 and outer container 3, is filled with heat-insulating material 4.Refrigerator from begin to have refrigerating chamber 6, moist closet 7, refrigerating chamber 8, the front is refrigerating chamber shutter door 9, moist closet shutter door 10, refrigerating chamber shutter door 11.

Refrigerating chamber 6 is isolated by the demarcation strip with insulation effect 12 with moist closet 7, and moist closet 7 is isolated by the demarcation strip with insulation effect 13 with refrigerating chamber 8.Be provided with the conduit 14 that is connected with refrigerating chamber 8 in the inside of demarcation strip 13.

In refrigerating chamber 6, dispose the refrigerating chamber shelf and the refrigerating chamber box that are used to take in food.In addition,, join with wall and to dispose catheter block 15 (evaporimeter), in refrigerating chamber 6 casees, have refrigeration wall by catheter block 15 refrigeration at the back side of the interior case 2 of refrigerating chamber 6.In addition, dispose refrigerator 16, above refrigerator 16, dispose fan 17 at the back side of refrigerating chamber 8.

In addition, have the incubation chamber that is used to take in food in the moist closet 7, dispose the conduit 18 that has valve 19 in inside overleaf.

Below, to according to the refrigerator that constitutes with upper type, its action is described.

Refrigerating chamber 6 is by catheter block 15 refrigeration.Catheter block 15 joins with the back side of the interior case 2 of refrigerating chamber 6, and the two sides of the interior case of refrigerating chamber 6 is refrigeration walls, through natural refrigeration, refrigerating chamber shelf, refrigerating chamber box in the refrigerating chamber 6 is freezed.

On the other hand, refrigerating chamber 8 is through being freezed by the cold air forced circulation of the refrigerator 16 in 17 pairs of cool rooms of fan.The cold air of circulation turns back to refrigerator 16 in refrigerating chamber 8.

In addition, the refrigeration of moist closet 7 can be utilized fan 17, makes a part of cold air inflow catheter 14, and to conduit 18 circulations at the back side of moist closet 7.The cold air of inflow catheter 18 through valve 19, is discharged to the moist closet box, with the moist closet box in air carried out heat exchange after, be inhaled into the back side to the return conduit of refrigerator 16, and turn back to refrigerator 16.

As stated, in this embodiment, refrigerating chamber 6 is distinguished up and down by demarcation strip 12 with moist closet 7, does not form the path that makes circulating cold air.And refrigerating chamber 6 is freezed to proper temperature through the refrigeration of catheter block 15.Moist closet 7 makes the evaporation latent heat of refrigerator 16 in moist closet 7, circulate through fan 17; In addition; The valve that detects through the temperature to moist closet 7 comes the air conditioning quantity of circulation is controlled; Make the temperature of moist closet 7 keep certain thus, therefore can the temperature of the food in the moist closet box be kept certain, can improve the fresh-keeping property (for example with reference to patent documentation 1) of food.

The prior art document

Patent documentation 1: TOHKEMY 2005-195293 communique

Summary of the invention

The problem that solves is wanted in invention

, in above-mentioned existing structure, in refrigerating chamber 6, do not constitute wind path, with near nearer position of catheter block 15 and position far away, temperature difference becomes big easily in the refrigerator.In addition, for equably to freezing the inside of conduit 18 in the moist closet 7; Be divided into a plurality of paths with the mode that splits into multiple branch circuit; Is communicated with a plurality of outlets 20 that are provided with at the end face of moist closet 7 and discharges cold air, so the structure of conduit 18 becomes complicated, the wind path resistance increase of cold air in conduit 18 that is guided by fan 17 from refrigerator 16; Can not get rid of the cold air of ormal weight to moist closet 7, existence can not be guaranteed the problem of proper temperature.In addition,, need to increase the wind path area, therefore have the depth size decreases of moist closet 7, the problem that internal volume reduces for the wind path resistance that makes conduit 18 reduces.

The objective of the invention is to; The conduit that will have the cold air wind path that refrigerating chamber is freezed is formed in the back side and the wind path simplification of will freezing, and guarantees suitable air quantity, and; The discharge conduit to switching the chamber that is communicated with conduit is formed; Dispose a plurality of outlets and will switch and indoorly freeze to proper temperature equably, and, prevent in the discharge conduit, to sneak into foreign matter.

The method that is used to deal with problems

The present invention is in order to solve above-mentioned existing problem, and refrigerator of the present invention disposes refrigerating chamber on top; Dispose refrigerating chamber in the bottom, between above-mentioned refrigerating chamber and above-mentioned refrigerating chamber, dispose the switching chamber that the temperature band is switched, the differentiation wall that above-mentioned refrigerating chamber and above-mentioned switching chamber are distinguished up and down; This refrigerator is characterised in that; Comprise: pipe guide is configured in the back side of above-mentioned switching chamber, the cold air that will be generated by the refrigerator in the configuration of the rear of the above-mentioned refrigerating chamber above-mentioned switching chamber of leading; With the discharge conduit,, discharge above-mentioned cold air to above-mentioned switching chamber in the lower surface formation of the above-mentioned differentiation wall that is connected with above-mentioned pipe guide.

Thus, switch the chamber, can also discharge cold air, even and be set to the cryogenic temperature band and also can freeze to proper temperature indoor to the front side that switches the chamber through discharging conduit.In addition, owing to can therefore can realize the sammingization of refrigerating chamber with switching indoor the refrigeration equably to proper temperature.In addition, can the depth size of chamber simply changed and guaranteed to switch to the wind path structure of the pipe guide that switches the back side, chamber, and, guarantee air quantity to each storeroom.

The invention effect

Refrigerator of the present invention can provide refrigerating efficiency to improve and the switching chamber and the refrigerating chamber that will be connected with pipe guide freeze to the refrigerator of proper temperature.

Description of drawings

Fig. 1 is the longitudinal section of the refrigerator in the embodiment 1 of the present invention.

Fig. 2 is the front view of the main body in the embodiment 1 of the present invention.

Fig. 3 is the skeleton diagram of the wind path in the embodiment 1 of the present invention.

Fig. 4 is first exploded view of the pipe guide in the embodiment 1 of the present invention.

Fig. 5 is second exploded view of the pipe guide in the embodiment 1 of the present invention.

Fig. 6 is the stereogram of the pipe guide in the embodiment 1 of the present invention.

Fig. 7 is the 3rd exploded view of the pipe guide in the embodiment 1 of the present invention.

Fig. 8 is the skeleton diagram of the pipe guide in the embodiment 1 of the present invention.

Fig. 9 is the exploded view of the major part in the embodiment 1 of the present invention.

Figure 10 is the stereogram of the major part in the embodiment 1 of the present invention.

Figure 11 is the skeleton diagram of the major part in the embodiment 1 of the present invention.

Figure 12 is the stereogram that second in the embodiment 1 of the present invention distinguished wall.

Figure 13 is the exploded perspective view that second in the embodiment 1 of the present invention distinguished wall.

Figure 14 is the sectional view of existing refrigerator.

Symbol description

30 refrigerators

31 refrigerating chambers

Switching chambers 36

37 refrigerating chambers

42 second distinguish wall

42a distinguishes heat insulating member

The 42b heat insulating member that leads

Mask part under the 42c

The last mask part of 42d

The 42e end difference

The specific embodiment

First invention is a kind of refrigerator, and it comprises: the refrigerating chamber on top; Refrigerating chamber in the bottom; The switching chamber of switching temperature band between above-mentioned refrigerating chamber and above-mentioned refrigerating chamber; Generate the refrigerator of cold air at the rear of above-mentioned refrigerating chamber; Be disposed at the top of above-mentioned refrigerator and the cold air that generates be sent to by the strong hand the fan of each chamber; Above-mentioned refrigerating chamber and above-mentioned switching chamber are imported the pipe guide of above-mentioned cold air; Distinguish the differentiation wall of above-mentioned refrigerating chamber and above-mentioned switching chamber up and down; Above-mentioned pipe guide is disposed at the back side of above-mentioned switching chamber; The discharge conduit of discharging above-mentioned cold air to above-mentioned switching chamber is formed on the lower surface of the above-mentioned differentiation wall that is connected with above-mentioned pipe guide, can freeze to proper temperature indoor.

Second invention is in the refrigerator of first invention, distinguishes wall and has: heat-insulating shield; The resin component that the upper surface and the lower surface of above-mentioned heat-insulating shield covered; With at the lower surface of above-mentioned heat-insulating shield to the discharge catheter plate that switches indoor guiding cold air; Above-mentioned heat-insulating shield and above-mentioned discharge catheter plate are covered by above-mentioned resin component; Above-mentioned differentiation wall and above-mentioned discharge catheter plate form as one through above-mentioned resin component; In the time will being diverted to refrigerating chamber from the cold air that refrigerator is discharged and switching the chamber, conductive pipe external leakage not on the way, therefore can can't harm the lost territory guarantees air quantity.

The 3rd invention is in the refrigerator of first or second invention; Before filling with foam insulation materials foams between outer container that forms refrigerator main body and the interior case; Distinguish wall and be installed to the assigned position of above-mentioned interior case, after filling with foam insulation materials foams, below above-mentioned differentiation wall; Above-mentioned pipe guide is connected with the bottom of discharging conduit; Because the bottom of the discharge conduit integrally formed with distinguishing wall is connected with pipe guide, assemble with the dimensional discrepancy of the faying face that closes device so can suppress to discharge conduit, can suppress the assembling deviation.

The invention of the 4th record is in the invention of technical scheme 1, and above-mentioned differentiation wall comprises: heat-insulating shield; Upper surface upper surface resin component that covers and the following mask part that covers lower surface to above-mentioned heat-insulating shield; Above-mentioned differentiation wall was installed before refrigerator main body being carried out the carbamate filling-foam, after foaming, after having assembled pipe guide; To discharge conduit is connected with above-mentioned pipe guide; Thus, the deviation that is provided with of pipe guide can be reduced, assembling operation efficient can be improved.

The 5th invention is that following mask part is formed with end difference in the 4th invention, is formed with switching the outlet that cold air is discharged in the chamber at above-mentioned end difference, can make to the wind path structure of switching the chamber simple thus.

Below, with reference to accompanying drawing, describe to embodiment of the present invention, to the additional same mark of same structure of existing example or the embodiment explained before, and omit its detailed description.In addition, and can't help this embodiment and limit the present invention.

(embodiment 1)

Fig. 1 is the longitudinal section of the refrigerator in the embodiment 1 of the present invention.Fig. 2 is the front view of the main body in the embodiment 1 of the present invention; Fig. 3 is the skeleton diagram of the wind path in the embodiment 1 of the present invention; Fig. 4 is first exploded view of the pipe guide in the embodiment 1 of the present invention; Fig. 5 is second exploded view of the pipe guide in the embodiment 1 of the present invention, and Fig. 6 is the stereogram of the pipe guide in the embodiment 1 of the present invention, and Fig. 7 is the 3rd exploded view of the pipe guide in the embodiment 1 of the present invention; Fig. 8 is the skeleton diagram of the pipe guide in the embodiment 1 of the present invention; Fig. 9 is the exploded view of the major part in the embodiment 1 of the present invention, and Figure 10 is the stereogram of the major part in the embodiment 1 of the present invention, and Figure 11 is the skeleton diagram of the major part in the embodiment 1 of the present invention; Figure 12 is the stereogram that second in the embodiment 1 of the present invention distinguished wall, and Figure 13 is the exploded perspective view that second in the embodiment 1 of the present invention distinguished wall.

In Fig. 1, the body of thermal insulating box 31 of refrigerator 30 mainly has the outer container 32 that uses steel plate and by the interior case 33 of the resin forming of ABS etc., between this outer container 32 and interior case 33, is filled with the foamed thermal insulating 34 of hard foamed carbamate for example etc.Body of thermal insulating box 31 is divided into a plurality of storerooms from thermal insulation being carried out in inside on every side.Topmost configuration refrigerating chamber 35 at body of thermal insulating box 31 switches chamber 36 in the configuration of the bottom of this refrigerating chamber 35, at foot configuration refrigerating chamber 37.

Front openings portion at refrigerating chamber 35 is equipped with refrigerating-chamber door 38, is equipped with in the front openings portion of switching chamber 36 and switches chamber door 39, and refrigerating chamber door 40 is to open and close freely mode by the front openings portion of pivotal support at refrigerating chamber 37.

Refrigerating chamber 35 is set 1 ℃～5 ℃ scope usually as lower limit.This scope being set at down in limited time, be the temperature that reserve is not damaged by frost.Switching chamber 36 can switch the temperature setting that brings to the refrigerated storage temperature band from cryogenic temperature, can set with 1 ℃ of interval at-18～4 ℃.Refrigerating chamber 37 is set to the cryogenic temperature band, for freezing preservation is set at-22 ℃～-15 ℃ usually.Also have,, for example also be set at-30 ℃～-25 ℃ low temperature sometimes in order to improve freezing preservation state.

In addition, switch chamber 36 and refrigerating chamber 37 and distinguished up and down by the first differentiation wall 41, refrigerating chamber 35 is used as the second differentiation wall 42 of distinguishing wall with switching chamber 36 and distinguishes up and down.

In addition, be provided with the cool room 43 that generates cold air at the back side of refrigerating chamber 37, refrigerator 44 arranged in the internal configurations of cool room 43.Cool room 43 is distinguished by 45 thermal insulation of first cover with refrigerating chamber 37.The fan 46 that pressure is blown to the cold air that is generated by refrigerator 44 is disposed at the top of refrigerator 44.Below refrigerator 44, be provided with the Defrost heater 47 that frost and ice attached to refrigerator 44 are defrosted.Particularly, Defrost heater 47 is Glass tube heaters of glass.Special is under the situation of hydrocarbon class refrigerated medium gas at cold-producing medium, is adopted as corresponding explosion-proof and the double glazing pipe heater formation double-layer glass tube as Defrost heater 47.In addition, first cover 45 has resinous decorative panel 45a and forms the maintaining part of

fan

46 and 45b is covered in the installation first of cold air path by the heat-insulating material of styrene materials etc.

In addition, have pipe guide 49 at the back side of switching chamber 36, this pipe guide 49 has to refrigerating chamber 35 and the air-supply conduit 48 that switches chamber 36 conveying cold air.Air-supply conduit 48 carry the refrigerating chamber air-supply conduit 48a of cold air and laterally arranged side by side and dispose about respectively pipe guide 49 in to refrigerating chamber 35 towards above-below direction to switching the switching chamber air-supply conduit 48b (discharge conduit) that discharges cold air in chamber 36.In pipe guide 49, be embedded with the valve gear 50 that subtend refrigerating chamber 35 and the air conditioning quantity of switching chamber 36 are regulated, and be configured in refrigerating chamber air-supply conduit 48a and the conduit separately that switches chamber air-supply conduit 48b, respectively the air conditioning quantity of passing through is controlled.

In addition, the cold air of discharging from the outlet 35a of refrigerating chamber 35 through refrigerating chamber air-supply conduit 48a, the return port 35b that is provided with from the back side, bottom of refrigerating chamber 35 returns conduit 51a through refrigerating chamber, returns to refrigerator 44.Through switching chamber air-supply conduit 48b to switching the cold air that discharge chamber 36, at the back side of switching chamber 36, return conduit 51b through switching the chamber from the switching chamber return port 36c of the bottom that is arranged on pipe guide, return to refrigerator 44.

Refrigerating chamber is returned conduit 51a to dispose with air-supply conduit 48 horizontal modes arranged side by side; Thus, refrigerating chamber air-supply conduit 48a, switch chamber air-supply conduit 48b, also have three conduits that refrigerating chamber returns conduit 51a to be disposed at pipe guide 49 towards above-below direction and along horizontal mode arranged side by side.Switch the chamber and return conduit 51b, return conduit 51a with refrigerating chamber and compare, switch chamber return conduit 51b and be configured in the place ahead so that to return conduit 51a adjacent and be that the mode of front-back direction relation disposes with refrigerating chamber.

Pipe guide 49 forms with the back side height of switching chamber 36 and the size of left and right sides width dimensions degree.It is the substantial middle of the width of pipe guide 49 that refrigerating chamber air-supply conduit 48a is configured in the left and right sides width that switches chamber 36 with switching chamber air-supply conduit 48b.It is being a side centralized configuration of the pipe guide 49 at center with refrigerating chamber air-supply conduit 48a with switching chamber air-supply conduit 48b with switching chamber return conduit 51b that refrigerating chamber is returned conduit 51a.

Pipe guide 49 comprises: the upper catheter parts 49a that is formed by foamed styrene; Lower guide duct member 49b and the resinous catheter cartridge plaque 49c that the front surface of upper catheter parts 49a and lower guide duct member 49b is covered.The lower surface portion of upper catheter parts 49a is connected on above-below direction with the upper surface part of lower guide duct member 49b, joint face is sealed, and by catheter cartridge plaque 49c the front is covered.Therefore, refrigerating chamber air-supply conduit 48a in the transtracheal catheter device 49 and switching chamber air-supply conduit 48b constitute the conduit wall through connecting upper catheter parts 49a and lower guide duct member 49b.

In addition, valve gear 50 is embedded in the lower guide duct member 49b.Particularly, the refrigerating chamber valve gear 50a of valve gear 50, with become with the lower guide duct member 49b of the joint face of upper catheter parts 49a be connected facial 49d compare more near below the mode of configuration bury underground.

In addition, the opposite side at the pipe guide 49 that disposes refrigerating chamber air-supply conduit 48a and switching chamber air-supply conduit 48b constitutes; Take in the distribution incorporating section 52 of the distribution and the connector of valve gear 50; With recess 56, this recess 56 has been taken in feedwater pipe arrangement 55, and this feedwater pipe arrangement 55 will be connected with ice making box 54 in refrigerating chamber 37 configurations at the water conduit 53 of giving of the automatic ice-making plant of refrigerating chamber 35 configuration.

Particularly, distribution incorporating section 52 is formed at upper catheter parts 49a or lower guide duct member 49b and closes the end difference 74 that forms between the decorative panel 49c.This distribution incorporating section 52 constitutes with the mode of the facial 49d that is tightly connected of leap upper catheter parts 49a and lower guide duct member 49b; Leave and take in the recess 56 that conduit 55 is joined in feedwater, and in upper catheter parts 49a and lower guide duct member 49b, form incorporating section 52 forwardly.The peripheral part of upper catheter parts 49a and lower guide duct member 49b is towards the facial 49d that is tightly connected, and becomes big mode with the cross section of connecting portion and is incline structure.Particularly, the side surface part of upper catheter parts 49a forms the tilted shape of expanding gradually towards lower surface portion from upper surface part (taper), or the side surface part of lower guide duct member 49b forms from the tilted shape (taper) of lower surface portion towards the top surface portion expansion.So, because the facial 49d that is tightly connected can guarantee that adiabatic wall thickness is bigger, therefore and between the catheter cartridge plaque 49c can guarantee end difference 74 easily, can more easily guarantee the space of distribution incorporating section 52.

In addition, switch chamber 36 have can be on fore-and-aft direction moves the upper drawer box 69 and bottom drawer box 70 of opening.Wherein, To switch the outlet of discharging cold air in chamber 36 be top outlet 36a be configured in upper drawer box 69 above the top of peristome 69a; At pipe guide 49 openings and to switching the lower bank outlet 36b that cold air is discharged in chamber 36; The top of peristome 70a on bottom drawer box 70, and form between the bottom surface sections 69b of upper drawer box 69.

The second district portion wall 42 as distinguishing wall is formed by the synthetic resin material, is the parts that refrigerating chamber 35 and switching chamber 36 are distinguished.The second district portion wall 42 comprises: as the differentiation heat insulating member 42a of heat-insulating shield; With differentiation heat insulating member 42a split, form guiding heat insulating member 42b to the guide wall of switching chamber 36 in the bottom of distinguishing heat insulating member 42a; The cap assembly that the following side of distinguishing heat insulating member 42a and guiding heat insulating member 42b is covered promptly descends mask part 42c; Promptly go up mask part 42d with the cap assembly that the upper face side of distinguishing heat insulating member 42a is covered.

And; At the leading section of the second differentiation wall 42, before to body of thermal insulating box 31 filling with foam insulation materials 34, the left and right sides width of the interior case 33 in edge disposes demarcation strip 80; This demarcation strip 80 is by forming with second district portion wall 42 various parts; And have the for example heat insulating member of foamed styrene etc. of synthetic resin members in inside, when having filled foamed thermal insulating 34, make foamed thermal insulating 34 expose and fix in the left and right end portions of demarcation strip 80.

The sealing gasket of refrigerating-chamber door 38 is adsorbed on the demarcation strip 80 with the sealing gasket that switches chamber 39, makes indoor cold air not to external leakage.

In addition, in demarcation strip 80, for dewfall does not take place on the surface of demarcation strip 80, and be embedded with dew eliminating tube (not shown)

In addition; The second district portion wall 42 is before the foaming of body of thermal insulating box 31; Be arranged on the rear of demarcation strip 80,, the heat-insulating material of the dual-side portion that is filled in the second district portion wall 42 exposed and the second district portion wall 42 is fixed to body of thermal insulating box 31 filling with foam insulation materials in the body of thermal insulating box 31.

In addition, with the mode on the top peristome that is disposed at the upper drawer box 69 that switches chamber 36, the end difference 42e of mask part 42c forms being arranged at down as the top outlet 36a of outlet.Top outlet 36a disposes a plurality of.

Therefore; Through being oppositely arranged on the A/F of guiding heat insulating member 42b; Have a plurality of at the top outlet 36a that following mask part 42c is being set; Can suppress foreign matter and enter in the outlet 36a of top, and can form with the modes that discharge cold air is discharged in the upper drawer box 69 equably.

In addition, the back face wall 69c of upper drawer box 69 is tilted to the place ahead of bottom drawer box 70, have lower bank outlet 36b in the position relative with back face wall 69c.Thus, back face wall 69c becomes the guide plate of the cold air of discharge, can in bottom drawer box 70, guide cold air.

In addition; Become the facial 49d that is connected with the lower guide duct member 49b of the joint face of the upper catheter parts 49a of pipe guide 49; On bottom drawer box 70 peristome 70a below, bottom surface sections 70b above the position form, and in the position formation corresponding with the back face wall 70c of bottom drawer box 70.

In addition, the vessel cover in the adjacent refrigerating chamber return conduit 51a of conduit 51b is returned in the switching chamber of pipe guide 49 is pasted with aluminium foil heater 57.Relevant aluminium foil heater 57 is when switching chamber 36 when being set to the temperature cryogenic temperature band lower than refrigerated storage temperature band etc., or when temperature is spent outside low, to the heater control of switching on.This is owing to contain the cold air that has carried out returning through refrigerating chamber the refrigerating chamber 35 circulations moisture afterwards of conduit 51a; The temperature of switching the cold air of returning conduit 51b in the chamber is high than importing to; Therefore having refrigerating chamber return conduit 51a is lowered the temperature; Therefore the problem that dewfall takes place or freeze switches on to heater, prevents to freeze.

In addition, the first differentiation wall 41 in that the lower surface portion with pipe guide 49 is connected disposes to front and back: return the refrigerating chamber return connected entrance 58 that conduit 51a is communicated with refrigerating chamber; Return connected entrance 59 with the switching chamber that is communicated with switching chamber return conduit 51b.Be provided with the switching chamber in the front side and return connected entrance 59, be provided with refrigerating chamber at rear side and return connected entrance 58.Switching chamber return connected entrance 59 is communicated with cool room 43 with refrigerating chamber return connected entrance 58.First distinguishes wall 41 is installed at assigned position before the foaming of body of thermal insulating box 31, and through making the carbamate that is filled in body of thermal insulating box 31 be used for the heat-insulating property that fixedly improves refrigerator of the first differentiation wall 41.

Particularly, first distinguish wall 41 and comprise: the first differentiation wall 41a that forms by foamed styrene; To first distinguish wall 41a above cover first above distinguish cover 41b and to first distinguish wall 41a below cover first below distinguish cover 41c.And, on first, distinguish between the cover 41c below the differentiation cover 41b and first and fill carbamate, distinguish wall 41 with first and be fixed in body of thermal insulating box 31.In addition, first distinguish wall 41 upper surface be pasted with aluminium foil heater 41d, when switching chamber 36 when being set conduction cooling and hiding the temperature band, 41d switches on to the aluminium foil heater, realizes suitable temperature.

First cover 45 also is located at the side of refrigerator 44.In addition, be formed with the cold air return path of separating by the refrigerator 44 and the back face wall of partition member 75 and cool room 43 71.Return connected entrance 58 and switch the Quilt with air conditioning importing cold air return path 71 of returning connected entrance 59 in the chamber through the refrigerating chamber of the first differentiation wall 41.In addition, cold air return path 71 is formed at the sidepiece of refrigerator 44 through partition member 75.The upstream side of cold air return path 71 disposes, and distinguishes wall 41 sealings and is communicated with first, and return cold air and switching chamber with refrigerating chamber and return the shunt catheter 76 that mode that cold air do not collaborate is shunted.Under the situation of present embodiment, cold air is returned in the chamber and refrigerating chamber returns the mode that cold air is shunted so that switch, and forms and switch the chamber to return the shunt catheter 76 that connected entrance 59 is connected.Under the situation of present embodiment, only form shunt catheter 76 at upstream side, refrigerating chamber returns cold air and switches the chamber and return cold air and from the way, begin the interflow.

This is called the main cause of following situation: when the cold air of the cold air of returning conduit 51b through the switching chamber and process refrigerating chamber return conduit 51a; When collaborating through cold air return path 71; Cold air is distinguished the refrigerating chamber return connected entrance 58 of wall 41 and is switched chamber return connected entrance 59 via first adverse current takes place; Temperature ratio switching chamber is returned the high refrigerating chamber of cold air and is returned cold air through switching 59 risings of chamber return connected entrance; From switching chamber return port 36c, can not freeze to proper temperature efficiently switching chamber 36, or dewfall etc. takes place to switching chamber 36 adverse currents.

Therefore, in the upstream portion of cold air return path 71 cold air is shunted and do not mixed.Therefore; The cold air of returning conduit 51a through refrigerating chamber does not flow downwards; And return connected entrance 59 adverse currents to switching the chamber, through preventing to prevent that as adverse current conduit from playing a role from the function of switching chamber return port 36c waterproof valve of adverse current in switching chamber 36 of pipe guide 49.

Shunt catheter 76 only is formed at upstream portion in order to ensure the aperture area of return path 71, but if can guarantee the aperture area in the downstream of return path 71, also can extend to the downstream part.

In addition, be provided with and make the cold air of returning to the bottom of refrigerator 44 through the cold air of cold air return path 71 return mouthfuls 77, promptly to return mouthfuls 77 are structures at the bottom of partition member 75 75a opening to cold air.And, the end of the Defrost heater 47 of approximate horizontal ground configuration below refrigerator 44, the end from refrigerator 44 in the perspective plane stretches out, and returns in the mouth 77 through cold air, extends at return path 71.

Thus, can prevent the colder cold air refrigeration that contains wetly Quilt with air conditioning refrigerator 44 or refrigerating chamber in the cold air return path 71, in cold air return path 71, freeze.

In addition; First cover 45 have fan 46 and to refrigerating chamber 35 with switch the cold gas exhausting outlet 72 that chamber 36 is seen cold air off; Between fan 46 and cold air return path 71, form cold gas exhausting outlet 72, between cold gas exhausting outlet 72 and cold air return path 71, form partition member 75.

Below, refrigerating chamber 35 is described.

Refrigerating chamber 35 is told a plurality of zones by a plurality of shelves 61 with indoor upper and lower region.The refrigerating chamber air-supply conduit 48a that constitutes at the back side of refrigerating chamber 35 forms on above-below direction at the rear of a plurality of shelves 61, and corresponding each shelf 61 offers refrigerating chamber outlet 35a.In addition, refrigerating chamber air-supply conduit 48a can form the branch branch road 63 of left and right sides branch in refrigerating chamber 35 spaces.Through having branch branch road 63, can make the uniformity of temperature profile in space of the width of refrigerating chamber 35.

In addition, vegetable compartment 64 is formed at the bottom in refrigerating chamber 35.Vegetable compartment 64 has open-close lid 64a in front, has the vegetable box 64b that can extract out at fore-and-aft direction.Vegetable compartment 64 also can be to have peristome in the above except such structure, and taking in can be by the chamber 65 of upper cover sealing.

In addition, vegetable compartment 64 cooperates the whole width dimensions of refrigerating chamber 35 and constitutes, but under the situation of present embodiment, vegetable compartment 64 constitutes with the size littler than the whole width of refrigerating chamber 35.Vegetable compartment 64 laterally, that releasably takes in water that the storage automatic ice-making uses gives water pot 53.And, extend to refrigerating chamber 37 from refrigerating chamber 35 through switching chamber 36 with the feedwater pipe arrangement 55 of being connected for water pot 53.Picked up and be directed in the feedwater pipe arrangement 55 for the water in the water pot 53 through not shown motor.

Switch chamber 36 and can be set at the cryogenic temperature band, the water in the feedwater pipe arrangement 55 also possibly freeze.Therefore; Periphery at feedwater pipe arrangement 55 is wound with the not shown antifreeze heater of using; Between case 33 and the pipe guide 49, therefore form recess 56 in the pipe arrangement 55 that feeds water in addition is configured in, and the pipe arrangement 55 that will feed water is embedded in recess 56 and carries out thermal insulation in the inside of pipe guide 49.In addition, the distribution of taking in valve gear 50 and the distribution incorporating section 52 of taking in connector also can be arranged on the inside of pipe guide 49.

Through forming recess 56 and distribution incorporating section 52, can reduce the space of feedwater pipe arrangement 55 and distribution incorporating section 52 needed fore-and-aft directions, can guarantee to switch the internal volume of chamber 36.In addition; Recess 56, distribution incorporating section 52 are being formed with the refrigerating chamber air-supply conduit 48a of pipe guide 49, are switching chamber air-supply conduit 48b, are also having refrigerating chamber to return the part of conduit 51a; Mode not overlap is formed in opposition side, therefore can prevent the thermal insulation loss.

In addition, outer container 32 with the corresponding position, the back side of switching chamber 36, dispose the control substrate 66 of control refrigerator 30 integral body.

In addition, the refrigerator temperature sensor 67 that detects the temperature of refrigerating chamber 35 is arranged in the refrigerating chamber return port 35b, and switching chamber 36 temperature sensors 68 that detect the temperature of switching the chamber are arranged on and switch in the return port 36c of chamber.

Below, for the refrigerator that constitutes with upper type, its action, effect are described.

The part of the cold air that generates by the refrigerator of cool room 43 44; Be forced ground air-supply forwards through fan 46, the cold air refrigeration that refrigerating chamber 37 is discharged from the outlet of first cover 45, cold air is via the return port in the lower openings of first cover 45; The bottom of guiding refrigerator 44; Carry out heat exchange at refrigerator 44, once more, fresh cold air is through fan 46 repetitive cycling.Thus, refrigerating chamber 37 is freezed to proper temperature through the control of refrigerating chamber sensor (not shown).

In addition, the cold air of discharging to the top of fan 46, from the cold gas exhausting outlet 72 of first cover 45 through first distinguish wall 41 intercommunicating pore, be directed to pipe guide 49.And; When the Quilt with air conditioning refrigerator temperature sensor 67 that is discharged to refrigerating chamber 35 detects indoor temperature when design temperature is above, the refrigerating chamber valve 50a of valve gear 50 is open, through refrigerating chamber air-supply conduit 48a; Discharge cold air from the outlet 35a of refrigerating chamber, freeze indoor.The Quilt with air conditioning guiding return port 35b that is circulated throughout; Become the air of the contained moisture of the air that has in the refrigerating chamber 35 or reserve; And the refrigerating chamber return conduit 51a of process pipe guide 49, through the cold air return path 71 that the back face wall by first cover 45 and cool room 43 constitutes, be directed to the bottom of refrigerator 44 from cold air return port 77; Carry out heat exchange with refrigerator 44, ozone is forced air-supply through fan again.

Thus; Even refrigerating chamber 35 is in the position of leaving refrigerator 44; Also can cold wind be forced to make cold air through the air-supply of the refrigerating chamber in the pipe guide 49 conduit 48a to the refrigerating chamber air-supply conduit 48a air-supply that is communicated with refrigerator 44, discharge to refrigerating chamber 35 through fan 46; Control the switching of refrigerating chamber valve 50a in addition through refrigerator temperature sensor 67, thus can be with the indoor design temperature that is controlled at.

In addition, detected indoor temperature when design temperature is above when switching room temperature sensor 68, the switching chamber valve 50b of valve gear 50 is open; To switching the cold air that discharge chamber 36; Through switching chamber air-supply conduit 48b, from extend to upper drawer box 69 above the outlet 36a of the switching chamber that is provided with on the peristome discharge cold air, thus; Cold air is imported to the place ahead of upper drawer box 69, so can the collecting article that be accommodated near the position of door 39 sides be freezed to proper temperature.

In addition, formed outlet 36a, therefore can improve the volumetric efficiency of switching chamber 36 with the following mask part 42c that constitutes the second differentiation wall 42.

In addition; Width through the following mask part 42c upper edge upper drawer box 69 that has in the bottom of distinguishing heat insulating member 42a has a plurality of top outlet 36a; Can be with freezing equably in the upper drawer box 69 to proper temperature, can also suppress foreign matter etc. and import second and distinguish in the wall 42.

In addition, the outlet 36b that is provided with from the position that peristome is high on than bottom drawer box 70 discharges cold air, and the back face wall of upper drawer box 69 is played a role as the guide that flows that limits cold air, imports cold air to bottom drawer box 70.

The Quilt with air conditioning of circulation guiding return port 36c in switching chamber 36; Return conduit 51b through switching the chamber; Through switching chamber return connected entrance 59,, return the bottom that mouth 77 is directed to refrigerator 44 from cold air through the shunt catheter 76 that forms at first cover 45; Carry out heat exchange with refrigerator 44, the cold air that carried out heat exchange is forced air-supply through fan once more.

Thus; Even switch chamber 36 in the position of leaving refrigerator 44; Also can be through fan 46 with cold wind to the switching chamber that is communicated with refrigerator 44 air-supply conduit 48b forced air supply, and make cold air, to switching chamber 36 discharges through in the pipe guide 49; And control the switching of switching chamber valve 50b through switching room temperature sensor 68, thus can be with the indoor design temperature that is controlled at.

In pipe guide 49, refrigerating chamber air-supply conduit 48a with switch chamber air-supply conduit 48b and refrigerating chamber return conduit 51a upper and lower extend upward and about laterally configuration side by side, switch the chamber and return the place ahead that conduit 51b is formed at refrigerating chamber return conduit 51a.

Therefore; Refrigerating chamber air-supply conduit 48a is set in the approximate centre position of the width of pipe guide 49 and switches chamber air-supply conduit 48b; On fore-and-aft direction, disposing refrigerating chamber in a side with respect to body of thermal insulating box 31 returns conduit 51a and switches chamber return conduit 51b; Therefore; Dispose and give the feedwater pipe arrangement 55 and distribution incorporating section 52 that water pot 53 is connected in an other side, so can make and become the pipe guide 49 of the idle space at switching rear, chamber and the distance between the interior case 33 diminishes, the depth size that can guarantee to switch chamber 36 is bigger.

In addition, refrigerating chamber air-supply conduit 48a forms by conduit from the branch branch road 63 to the refrigerating chamber 35 in the pipe guide 49 that switches chamber 36 in an approximate vertical direction, therefore, can reduce the wind path resistance in the conduit and guarantee the air quantity to refrigerating chamber 35.

In addition, filling with foam insulation materials 34, the first is distinguished wall 41 and the second differentiation wall 42 is formed at body of thermal insulating box 31; Afterwards; Distinguish wall 41 and second first and distinguish between the wall 42,, can make that therefore the guide-tube structure that switches chamber 36 forms simply at the back side deployment catheter device 49 that switches chamber 36.

Switch the refrigerated storage temperature band that chamber 36 can bring to 4 ℃ from-18 ℃ cryogenic temperature design temperature switched, these through according to design temperature control switch the aperture rate of chamber valve 50b, can realize.

Particularly when the design temperature that switches chamber 36 is set to than the low temperature band of refrigerated storage temperature,,, is directed to and switches the chamber and return in the conduit 51b through return port 36c from the outlet 36a that switches the chamber, the cold air that 36b discharges.The temperature of returning the cold air of conduit 51a through refrigerating chamber is higher than through switching the cold air that conduit 51b is returned in the chamber; Therefore has the problem of returning the catheter surface generation dewfall of conduit 51a at refrigerating chamber; When temperature is spent outside low especially; Dewfall possibly frozen, and also possibly in refrigerating chamber is returned conduit 51a, flow by dew in addition, freezes at return path 71.Therefore, stick on refrigerating chamber and return heater 57 work on the conduit 51a, also make its evaporation, can prevent freezing in the conduit even produce dew through making.

In addition; Through upstream portion the cold air shunting is not mixed at cold air return path 71; Cold air through refrigerating chamber return conduit 51a is not flowed downwards; And to switching chamber connected entrance 59 adverse currents, prevent from the switching chamber return port 36c of pipe guide 49 to be brought into play to the function of the waterproof valve that switches chamber 36 adverse currents, prevent that as adverse current conduit from playing a role.Therefore, can stop refrigerating chamber to return cold air and return connected entrance 59 from switching chamber return port 36c, can freeze to proper temperature switching chamber 36 efficiently, can also prevent dewfall etc. to switching chamber 36 adverse currents through switching the chamber.

In addition, the end of Defrost heater 47, the end society from refrigerator 44 in the perspective plane stretches out; Return in the mouth 77 through cold air; Extend at return path 71, therefore when defrosting, can utilize heater heat that return path 71 is heated; Can improve and prevent dewfall and freeze, can improve reliability.

Refrigerating chamber return conduit 51a with switch the chamber return conduit 51b through the excess temperature band than switching low refrigerating chamber 37 zones of chamber 36 and refrigerating chamber 35; Be communicated with the below of refrigerator 44; Therefore, will compare with the temperature band of refrigerating chamber 37 and return the highest refrigerating chamber of cold air temperature and return conduit 51a and be disposed at the position of leaving refrigerating chamber 37, and can reduce refrigerating chamber and return in the conduit 51a and lowered the temperature; Dewfall takes place, and refrigerating chamber is returned the problem of freezing in the conduit 51a.

Therefore; Be disposed at the place ahead that refrigerating chamber is returned conduit 51a through returning conduit 51b from the switching chamber of the switching chamber 36 set as for the approaching temperature of temperature of refrigerating chamber with the approaching temperature of the temperature of refrigerating chamber 37, can reduce refrigerating chamber return in the conduit 51a dewfall with freeze.

Utilizability on the industry

As stated, the refrigerator that the present invention relates to can be applicable to the home-use or professional refrigerator of using.

Claims

1. a refrigerator disposes refrigerating chamber on top, disposes refrigerating chamber in the bottom; Between said refrigerating chamber and said refrigerating chamber, dispose can the switching temperature band the switching chamber; And have the differentiation wall that said refrigerating chamber and said switching chamber are distinguished up and down, this refrigerator is characterised in that, comprising:

Pipe guide, it is configured in the back side of said switching chamber, the said switching chamber of will being led by the cold air that the refrigerator at the rear that is disposed at said refrigerating chamber generates; With

Discharge conduit,, discharge said cold air to said switching chamber in the lower surface formation of the said differentiation wall that is connected with said pipe guide.

2. refrigerator as claimed in claim 1 is characterized in that:

Said differentiation wall has:

Heat-insulating shield;

To the top of said heat-insulating shield with below the cap assembly that covers; With

At the lower surface of said heat-insulating shield to the discharge catheter plate that switches indoor guiding cold air, wherein

Said heat-insulating shield and said discharge catheter plate are covered by said cap assembly,

Said differentiation wall and said discharge catheter plate form as one through said cap assembly.

3. according to claim 1 or claim 2 refrigerator is characterized in that:

Before filling with foam insulation materials foams between outer container that forms refrigerator main body and the interior case, said differentiation wall is installed in the assigned position of said interior case,

After filling with foam insulation materials foamed, said pipe guide was connected with the bottom of discharging conduit below said differentiation wall.

4. refrigerator as claimed in claim 1 is characterized in that:

Said differentiation wall comprises: heat-insulating shield; To the top resin component that covers above the said heat-insulating shield and following mask part to covering below the said heat-insulating shield,

Said differentiation wall was installed before refrigerator main body being carried out the carbamate filling-foam, after foaming, after having assembled pipe guide, will discharge conduit and be connected with said pipe guide.

5. refrigerator as claimed in claim 4 is characterized in that:

Be formed with end difference at said mask part down, be formed with switching the outlet that cold air is discharged in the chamber at said end difference.