CN102338528B

CN102338528B - Refrigerator

Info

Publication number: CN102338528B
Application number: CN201110198009.4A
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: 2015-04-29
Anticipated expiration: 2031-07-11
Also published as: JP5625561B2; CN102338528A; CN103003650A; 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 the cold air forced circulation that makes to be generated by refrigerator and the refrigerator that freezes of each storeroom different to temperature band.

Background technology

Figure 14 is the longitudinal section of existing refrigerator.

As shown in figure 14, casing 1 represents the refrigerator be made up of the body of thermal insulating box 5 being filled with heat-insulating material 4 between interior case 2 and outer container 3.Refrigerator has refrigerating chamber 6, moist closet 7, refrigerating chamber 8 from upper, before be refrigerating chamber shutter door 9, moist closet shutter door 10, refrigerating chamber shutter door 11.

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

The refrigerating chamber shelf for receiving food and refrigerating chamber box is configured with in refrigerating chamber 6.In addition, the back side of case 2 in refrigerating chamber 6, connects with wall and is configured with catheter block 15 (evaporimeter), has the refrigeration wall freezed by catheter block 15 in refrigerating chamber 6 casees.In addition, be configured with refrigerator 16 at the back side of refrigerating chamber 8, above refrigerator 16, be configured with fan 17.

In addition, there is in moist closet 7 incubation chamber for receiving food, being configured with the conduit 18 in inside with valve 19 overleaf.

Below, for according to the refrigerator formed with upper type, its action is described.

Refrigerating chamber 6 is freezed by catheter block 15.The back face of the interior case 2 of catheter block 15 and refrigerating chamber 6, the two sides of the interior case of refrigerating chamber 6 is refrigeration walls, by natural refrigeration, freezes to the refrigerating chamber shelf in refrigerating chamber 6, refrigerating chamber box.

On the other hand, refrigerating chamber 8 is by being freezed by the cold air forced circulation of the refrigerator 16 in fan 17 pairs of cool rooms.Refrigerator 16 is turned back at the cold air of refrigerating chamber 8 Inner eycle.

In addition, the refrigeration of moist closet 7 can utilize fan 17, makes a part of cold air inflow catheter 14, and circulates to the conduit 18 at the back side of moist closet 7.The cold air of inflow catheter 18, by valve 19, is discharged to moist closet box, after having carried out heat exchange with the air in moist closet box, has been inhaled into the return conduit to refrigerator 16 at the back side, and turns back to refrigerator 16.

As mentioned above, in the present embodiment, refrigerating chamber 6 and moist closet 7 are distinguished by demarcation strip about 12, do not form the path making circulating cold air.And refrigerating chamber 6 is cooled to proper temperature by the refrigeration of catheter block 15.Moist closet 7 makes the evaporation latent heat of refrigerator 16 to moist closet 7 Inner eycle by fan 17, in addition, controlled by the air conditioning quantity of valve to circulation detected the temperature of moist closet 7, the temperature of moist closet 7 is made to keep certain thus, therefore, it is possible to the temperature of the food in moist closet box is kept certain, freshness (such as with reference to patent document 1) of food can be improved.

Prior art document

Patent document 1: Japanese Unexamined Patent Publication 2005-195293 publication

Summary of the invention

The problem solved is wanted in invention

, in above-mentioned existing structure, in refrigerating chamber 6, do not form wind path, with close to the nearer position of catheter block 15 and position far away, in refrigerator, temperature difference easily becomes large.In addition, in order to freeze in moist closet 7 equably, the inside of conduit 18, multiple path is divided in the mode splitting into multiple branch circuit, the multiple outlets 20 arranged with the end face at moist closet 7 are communicated with and discharge cold air, and therefore the structure of conduit 18 becomes complicated, is increased from refrigerator 16 by the wind path resistance of cold air in conduit 18 that fan 17 guides, the cold air of ormal weight can not be got rid of to moist closet 7, there is the problem can not guaranteeing proper temperature.In addition, in order to make the wind path resistance of conduit 18 reduce, need to increase wind path area, the depth size that therefore there is moist closet 7 diminishes, the problem that internal volume reduces.

The object of the invention is to, by having, the back side is formed in and wind path simplification of freezing to the conduit of the cold air wind path that refrigerating chamber freezes, and guarantee suitable air quantity, and, what make to be communicated with conduit forms the discharge conduit of switching chamber, configure multiple outlet and freeze in switching chamber to proper temperature equably, and, prevent from being mixed into foreign matter in discharge conduit.

For the method for dealing with problems

The present invention is in order to solve above-mentioned existing problem, refrigerator of the present invention, refrigerating chamber is configured with on top, be configured with refrigerating chamber in bottom, between above-mentioned refrigerating chamber and above-mentioned refrigerating chamber, be configured with the switching chamber that temperature band is switched, by the differentiation wall that above-mentioned refrigerating chamber and above-mentioned switching chamber are distinguished up and down, the feature of this refrigerator is, comprise: pipe guide, be configured in the back side of above-mentioned switching chamber, lead the cold air generated by the refrigerator configured at the rear of above-mentioned refrigerating chamber above-mentioned switching chamber; With discharge conduit, formed at the lower surface of the above-mentioned differentiation wall be connected with above-mentioned pipe guide, discharge above-mentioned cold air to above-mentioned switching chamber.

Thus, switching chamber by discharge conduit, can also to switching chamber front side discharge cold air, even and if be set to cryogenic temperature band also can by indoor refrigeration to proper temperature.In addition, owing to can freeze in switching chamber to proper temperature equably, therefore, it is possible to realize the samming of refrigerating chamber.In addition, the wind path structure of the pipe guide at the switching chamber back side can be simplified and guarantee the depth size of switching chamber, and, guarantee the air quantity to each storeroom.

Invention effect

Refrigerator of the present invention can provide refrigerating efficiency to improve and by the switching chamber that is connected with pipe guide and refrigeration chamber to the refrigerator of proper temperature.

Accompanying drawing explanation

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

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

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

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

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

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

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

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

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

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

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

Figure 12 is the stereogram that second in embodiments of the present invention 1 distinguish wall.

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

Figure 14 is the sectional view of existing refrigerator.

Symbol description

30 refrigerators

31 refrigerating chambers

36 switching chambers

37 refrigerating chambers

42 second distinguish wall

42a distinguishes heat insulating member

42b leads heat insulating member

Mask part under 42c

The upper mask part of 42d

42e end difference

Detailed description of the invention

First invention is a kind of refrigerator, and it comprises: at the refrigerating chamber on top; At the refrigerating chamber of bottom; The switching chamber of switching temperature band between above-mentioned refrigerating chamber and above-mentioned refrigerating chamber; The refrigerator of cold air is generated at the rear of above-mentioned refrigerating chamber; Be configured at the top of above-mentioned refrigerator and the cold air of generation be sent to forcibly the fan of each room; Above-mentioned refrigerating chamber and above-mentioned switching chamber are imported to 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 configured 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 in the lower surface of the above-mentioned differentiation wall be connected with above-mentioned pipe guide, can by indoor refrigeration to proper temperature.

Second invention is in the refrigerator of the first invention, distinguishes wall and has: heat-insulating shield; To the resin component that upper surface and the lower surface of above-mentioned heat-insulating shield cover; With the discharge catheter plate guiding cold air at the lower surface of above-mentioned heat-insulating shield in switching chamber, 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 are formed as one by above-mentioned resin component, when the cold air of discharging from refrigerator is diverted to refrigerating chamber and switching chamber, on the way can not conductive pipe external leakage, therefore, it is possible to guarantee air quantity without loss.

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

4th invention recorded, be in the invention of technical scheme 1, above-mentioned differentiation wall comprises: heat-insulating shield; The upper surface resin component that the upper surface of above-mentioned heat-insulating shield is covered and the lower mask part being covered to lower surface, above-mentioned differentiation wall was installed before carrying out carbamate filling-foam to refrigerator main body, after foaming, after having assembled pipe guide, conduit will be discharged be connected with above-mentioned pipe guide, thereby, it is possible to reduce pipe guide deviation is set, assembling operation efficiency can be improved.

5th invention is in the 4th invention, and lower mask part is formed with end difference, is formed with the outlet of switching chamber being discharged to cold air, the wind path structure to switching chamber can be made thus simple at above-mentioned end difference.

Below, with reference to accompanying drawing, be described for embodiments of the present invention, add same mark to conventional example or the same structure of embodiment that illustrated before, and description is omitted.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 embodiments of the present invention 1.Fig. 2 is the front view of the main body in embodiments of the present invention 1, Fig. 3 is the skeleton diagram of the wind path in embodiments of the present invention 1, Fig. 4 is the first exploded view of the pipe guide in embodiments of the present invention 1, Fig. 5 is the second exploded view of the pipe guide in embodiments of the present invention 1, Fig. 6 is the stereogram of the pipe guide in embodiments of the present invention 1, Fig. 7 is the 3rd exploded view of the pipe guide in embodiments of the present invention 1, Fig. 8 is the skeleton diagram of the pipe guide in embodiments of the present invention 1, Fig. 9 is the exploded view of the major part in embodiments of the present invention 1, Figure 10 is the stereogram of the major part in embodiments of the present invention 1, Figure 11 is the skeleton diagram of the major part in embodiments of the present invention 1, Figure 12 is the stereogram that second in embodiments of the present invention 1 distinguish wall, Figure 13 is the exploded perspective view that second in embodiments of the present invention 1 distinguish wall.

In FIG, the body of thermal insulating box 31 of refrigerator 30 mainly has the outer container 32 that uses steel plate and by case 33 in the resin forming of ABS etc., is filled with the foamed thermal insulating 34 of such as hard foamed carbamate etc. between this outer container 32 and interior case 33.Body of thermal insulating box 31, from carrying out thermal insulation to inside around, is divided into multiple storeroom.At the topmost configuration refrigerating chamber 35 of body of thermal insulating box 31, in the bottom of this refrigerating chamber 35 configuration switching chamber 36, at foot configuration refrigerating chamber 37.

Be provided with refrigerating-chamber door 38 in the front openings portion of refrigerating chamber 35, be provided with switching chamber door 39 in the front openings portion of switching chamber 36, refrigerating chamber door 40 is pivotally supported on the front openings portion of refrigerating chamber 37 in opening and closing mode freely.

Refrigerating chamber 35 is set the scope of 1 DEG C ~ 5 DEG C usually as lower limit.Being lower prescribing a time limit by this range set, it is the temperature that reserve is not damaged by frost.Switching chamber 36 can switch the temperature setting bringing to refrigerated storage temperature band from cryogenic temperature, can set at-18 ~ 4 DEG C with 1 DEG C of interval.Refrigerating chamber 37 is set to cryogenic temperature band, in order to freezen protective is set as-22 DEG C ~-15 DEG C usually.Further, in order to improve freezen protective state, such as, be sometimes also set as the low temperature of-30 DEG C ~-25 DEG C.

In addition, switching chamber 36 and refrigerating chamber 37 are distinguished wall about 41 by first and are distinguished, and refrigerating chamber 35 and switching chamber 36 are distinguished wall about 42 as distinguish wall second and distinguished.

In addition, be provided with the cool room 43 generating cold air at the back side of refrigerating chamber 37, be configured with refrigerator 44 in the inside of cool room 43.Cool room 43 is covered 45 thermal insulation with refrigerating chamber 37 by first and distinguishes.The fan 46 of blowing to the cold air generated by refrigerator 44 is forced to be configured at the top of refrigerator 44.The Defrost heater 47 that the frost and ice that are attached to refrigerator 44 are defrosted is provided with in the below of refrigerator 44.Specifically, Defrost heater 47 is Glass tube heaters of glass.Special in cold-producing medium is hydrocarbon class refrigerated medium gas, be adopted as corresponding explosion-proof as Defrost heater 47 and form the double glazing pipe heater of double-layer glass tube.In addition, 45b is covered in the first installation first of covering the maintaining part and cold air path that 45 have resinous decorative panel 45a and form fan 46 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 the air-supply conduit 48 to refrigerating chamber 35 and switching chamber 36 transporting cold-air.Refrigerating chamber to the refrigerating chamber 35 transporting cold-air air-supply conduit 48a of air-supply conduit 48 and discharge switching chamber air-supply conduit 48b (discharge conduit) from cold air to switching chamber 36 respectively pipe guide 49 in left and right laterally arranged side by side and configure towards above-below direction.The air conditioning quantity being embedded with subtend refrigerating chamber 35 and switching chamber 36 in pipe guide 49 carries out the valve gear 50 regulated, and is configured in the respective conduit of refrigerating chamber air-supply conduit 48a and switching chamber air-supply conduit 48b, controls respectively to the air conditioning quantity passed through.

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

Refrigerating chamber is returned conduit 51a and is configured in the mode laterally arranged side by side with air-supply conduit 48, thus, refrigerating chamber air-supply conduit 48a, switching chamber air-supply conduit 48b, also have refrigerating chamber to return conduit 51a three conduits with towards above-below direction and mode transversely arranged side by side is configured at pipe guide 49.Switching chamber returns conduit 51b to return conduit 51a adjacent and configure for the mode of the position relationship of front and back with refrigerating chamber, and compared with returning conduit 51a with refrigerating chamber, switching chamber return conduit 51b is configured in front.

Pipe guide 49 is formed with the size of the rear-side height of switching chamber 36 and left and right width dimensions degree.Refrigerating chamber air-supply conduit 48a and switching chamber air-supply conduit 48b is configured in the substantial middle of the left and right width of switching chamber 36 and the width of pipe guide 49.Conduit 51a returned by refrigerating chamber and switching chamber returns the side centralized configuration of conduit 51b at the pipe guide 49 centered by refrigerating chamber air-supply conduit 48a and switching chamber air-supply conduit 48b.

Pipe guide 49 comprises: the upper catheter parts 49a 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 in the vertical direction with the upper surface part of lower guide duct member 49b, seals joint face, and by catheter cartridge plaque 49c to covering above.Therefore, the refrigerating chamber air-supply conduit 48a in transtracheal catheter device 49 and switching chamber air-supply conduit 48b, forms conduit wall by connecting upper catheter parts 49a and lower guide duct member 49b.

In addition, valve gear 50 is embedded in lower guide duct member 49b.Specifically, the refrigerating chamber valve gear 50a of valve gear 50, to bury underground becoming the mode configured closer to below compared with the connection of the lower guide duct member 49b of the joint face of upper catheter parts 49a face 49d.

In addition, be configured with at the opposite side of the pipe guide 49 being configured with refrigerating chamber air-supply conduit 48a and switching chamber air-supply conduit 48b; The storage distribution of valve gear 50 and the distribution incorporating section 52 of connector; With recess 56, this recess 56 is accommodated with feedwater pipe arrangement 55, and the feed water line 53 of the automatic ice-making plant configured at refrigerating chamber 35 is connected with the ice making box 54 configured at refrigerating chamber 37 by this feedwater pipe arrangement 55.

Specifically, distribution incorporating section 52 is formed at upper catheter parts 49a or lower guide duct member 49b and closes the end difference 74 formed between decorative panel 49c.This distribution incorporating section 52 is formed in the mode of the facial 49d that is tightly connected crossing over upper catheter parts 49a and lower guide duct member 49b, leave the recess 56 that conduit 55 is joined in storage feedwater, and in upper catheter parts 49a and lower guide duct member 49b, form incorporating section 52 in front.The peripheral part of upper catheter parts 49a and lower guide duct member 49b is towards the facial 49d that is tightly connected, and becoming large mode with the cross section of connecting portion is incline structure.Specifically, the side surface part of upper catheter parts 49a forms the tilted shape (taper) expanded gradually from upper surface part towards lower surface portion, or the side surface part of lower guide duct member 49b forms the tilted shape (taper) expanded from lower surface portion towards upper surface portion.So, because the facial 49d that is tightly connected can guarantee that adiabatic wall thickness is comparatively large, therefore and between catheter cartridge plaque 49c can easily guarantee end difference 74, the space of distribution incorporating section 52 can be guaranteed relatively easily.

In addition, having in switching chamber 36 can at the upper drawer box 69 of the top-open of fore-and-aft direction movement and bottom drawer box 70.Wherein, the top that the outlet of cold air and upper nozzle 36a are configured in the top-open portion 69a of upper drawer box 69 is discharged to switching chamber 36, the lower nozzle 36b of cold air is discharged to switching chamber 36 at pipe guide 49 opening, on the top of the top-open portion 70a of bottom drawer box 70, and formed between the bottom surface sections 69b of upper drawer box 69.

Being formed by synthetic resin material as the second portion of the district wall 42 distinguishing wall, is the parts distinguished refrigerating chamber 35 and switching chamber 36.Second portion of district wall 42 comprises: as the differentiation heat insulating member 42a of heat-insulating shield; With differentiation heat insulating member 42a split, form the guiding heat insulating member 42b of the guide wall to switching chamber 36 in the bottom distinguishing heat insulating member 42a; Namely mask part 42c is descended to the cap assembly that the following side distinguishing heat insulating member 42a and guiding heat insulating member 42b covers; Namely mask part 42d is gone up with the cap assembly covered the top side distinguishing heat insulating member 42a.

And, the leading section of wall 42 is distinguished second, before to body of thermal insulating box 31 filling with foam insulation materials 34, left and right width along interior case 33 is configured with demarcation strip 80, this demarcation strip 80 is formed by the parts different from the second portion of district wall 42, and there is in inside the heat insulating member of synthetic resin members such as foamed styrene etc., when having filled foamed thermal insulating 34, make foamed thermal insulating 34 expose in the left and right end portions of demarcation strip 80 and be fixed.

The sealing gasket of refrigerating-chamber door 38 and the sealing gasket of switching chamber 39 are adsorbed on demarcation strip 80, and indoor cold air is not externally revealed.

In addition, in demarcation strip 80, in order to not condense on the surface of demarcation strip 80, and be embedded with dew eliminating tube (not shown)

In addition, second portion of district wall 42 is before the foaming of body of thermal insulating box 31, be arranged on the rear of demarcation strip 80, to filling with foam insulation materials in body of thermal insulating box 31, the heat-insulating material of the both sides edge being filled in the second portion of district wall 42 exposed and the second portion of district wall 42 is fixed to body of thermal insulating box 31.

In addition, as the upper nozzle 36a of outlet in the mode on the top-open portion being configured at the upper drawer box 69 of switching chamber 36, formed at the end difference 42e being arranged at lower mask part 42c.Upper nozzle 36a is configured with multiple.

Therefore, by being oppositely arranged on an A/F of guiding heat insulating member 42b, there is multiple upper nozzle 36a arranging lower mask part 42c, foreign matter can be suppressed to enter in upper nozzle 36a, and the mode that can be discharged to equably in upper drawer box 69 to discharge cold air is formed.

In addition, the front of the back face wall 69c lower portion drawer box 70 of upper drawer box 69 also can be made to tilt, in the position relative with back face wall 69c, there is lower nozzle 36b.Thus, back face wall 69c becomes the guide plate of the cold air of discharge, can guide cold air in lower portion drawer box 70.

In addition, become the connection face 49d with the lower guide duct member 49b of the joint face of the upper catheter parts 49a of pipe guide 49, position above the below, bottom surface sections 70b of the top-open portion 70a of bottom drawer box 70 is formed, and is formed in the position corresponding with the back face wall 70c of bottom drawer box 70.

In addition, the vessel cover returned in the adjacent refrigerating chamber return conduit 51a of conduit 51b in the switching chamber of pipe guide 49 is pasted with aluminium foil heater 57.Relevant aluminium foil heater 57, when switching chamber 36 is set to the temperature cryogenic temperature band etc. lower than refrigerated storage temperature band, or when low outer temperature is spent, carries out energising to heater and controls.This is due to the cold air containing the moisture carried out after refrigerating chamber 35 circulation of conduit 51a returned by refrigerating chamber, higher than the temperature of the cold air importing to switching chamber return conduit 51b, therefore there is refrigerating chamber return conduit 51a lowered the temperature, problem condensation occurring or freezes, therefore heater is energized, prevents from freezing.

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

Specifically, the first differentiation wall 41 comprises: formed by foamed styrene first distinguishes wall 41a; Cover 41b is distinguished above to cover above first of the first differentiation wall 41a, and distinguishes cover 41c below to cover below the first differentiation wall 41a first.And, distinguish on first below cover 41b and first and fill carbamate between differentiation cover 41c, distinguish wall 41 by first and be fixed on body of thermal insulating box 31.In addition, be pasted with aluminium foil heater 41d at the first upper surface distinguishing wall 41, when switching chamber 36 is set conduction cooling Tibetan temperature band, aluminium foil heater 41d is energized, realizes suitable temperature.

First covers 45 and is located at the side of refrigerator 44.In addition, the cold air return path 71 separated by the back face wall of refrigerator 44 and partition member 75 and cool room 43 is formed.The Quilt with air conditioning returning connected entrance 58 and switching chamber return connected entrance 59 through the first refrigerating chamber distinguishing wall 41 imports cold air return path 71.In addition, cold air return path 71 is formed at the sidepiece of refrigerator 44 by partition member 75.The upstream side of cold air return path 71 is configured with, and distinguishes wall 41 and seals with first and be communicated with, and returns cold air and switching chamber with refrigerating chamber and return the shunt catheter 76 that mode that cold air do not collaborate carries out shunting.In case of the present embodiment, return cold air and refrigerating chamber to make switching chamber and return the mode that cold air shunts, to be formed and switching chamber returns the shunt catheter 76 that connected entrance 59 is connected.In case of the present embodiment, only form shunt catheter 76 at upstream side, refrigerating chamber return cold air and switching chamber return cold air from way interflow.

This is called the main cause of following situation: when returning the cold air of conduit 51b through switching chamber and returning the cold air of conduit 51a through refrigerating chamber, when being collaborated by cold air return path 71, cold air returns connected entrance 58 via the refrigerating chamber that first distinguishes wall 41 and adverse current occurs switching chamber return connected entrance 59, temperature than switching chamber return the high refrigerating chamber of cold air return cold air through switching chamber return connected entrance 59 rise, from switching chamber return port 36c to switching chamber 36 adverse current, switching chamber 36 can not be freezed efficiently to proper temperature, or condensation etc. occurs.

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

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

In addition, be provided with the cold air that the cold air through cold air return path 71 is returned to the bottom of refrigerator 44 and return mouth 77, namely cold air returns the structure that mouth 77 is the bottom 75a openings at partition member 75.And the end of the Defrost heater 47 substantially horizontally configured in the below of refrigerator 44, stretches out from one end of refrigerator 44 in perspective plane, returned in mouth 77 by cold air, extend at return path 71.

Thereby, it is possible to prevent the colder cold air containing moist Quilt with air conditioning refrigerator 44 or refrigerating chamber in cold air return path 71 from freezing, freeze in cold air return path 71.

In addition, first cover 45 has fan 46 and sends the cold gas exhausting outlet 72 of cold air to refrigerating chamber 35 and switching chamber 36, 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.

Indoor upper and lower region is separated multiple region by multiple shelf 61 by refrigerating chamber 35.The refrigerating chamber air-supply conduit 48a formed at the back side of refrigerating chamber 35, formed in the vertical direction at the rear of multiple shelf 61, corresponding each shelf 61, offers refrigerating chamber outlet 35a.In addition, refrigerating chamber air-supply conduit 48a can form the branch path 63 of left and right branch in refrigerating chamber 35 space.By having branch path 63, the uniformity of temperature profile in the space of the width of refrigerating chamber 35 can be made.

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

In addition, vegetable compartment 64 coordinates the whole width dimensions of refrigerating chamber 35 and forms, but in case of the present embodiment, vegetable compartment 64 is formed with the size that the whole width than refrigerating chamber 35 is little.In the transverse direction of vegetable compartment 64, be releasably accommodated with storage automatic ice-making water give water pot 53.And, extend to refrigerating chamber 37 from refrigerating chamber 35 through switching chamber 36 with the feedwater pipe arrangement 55 being connected to water pot 53.To be picked up by not shown motor to the water in water pot 53 and be directed in feedwater pipe arrangement 55.

Switching chamber 36 can be set as cryogenic temperature band, and the water in feedwater pipe arrangement 55 also may freeze.Therefore, not shown antifreeze heater is wound with in the periphery of feedwater pipe arrangement 55, the pipe arrangement 55 that feeds water in addition is configured between interior case 33 and pipe guide 49, therefore forms recess 56 in the inside of pipe guide 49, and feedwater pipe arrangement 55 is embedded in recess 56 and carries out thermal insulation.In addition, the distribution incorporating section 52 of the distribution and storage connector of receiving valve gear 50 also can be arranged on the inside of pipe guide 49.

By forming recess 56 and distribution incorporating section 52, the space of feedwater pipe arrangement 55 and the fore-and-aft direction required for distribution incorporating section 52 can be reduced, the internal volume of switching chamber 36 can be guaranteed.In addition, recess 56, distribution incorporating section 52 are being formed with the refrigerating chamber air-supply conduit 48a of pipe guide 49, switching chamber air-supply conduit 48b, are also having refrigerating chamber to return the part of conduit 51a, opposition side is formed in, therefore, it is possible to prevent thermal insulation from losing in the mode do not overlapped.

In addition, outer container 32, in the position corresponding with the back side of switching chamber 36, is configured with the control substrate 66 controlling refrigerator 30 entirety.

In addition, the refrigerator temperature sensor 67 detecting the temperature of refrigerating chamber 35 is arranged in refrigerating chamber return port 35b, and switching chamber 36 temperature sensor 68 detecting the temperature of switching chamber is arranged in switching chamber return port 36c.

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

A part for the cold air generated by the refrigerator 44 of cool room 43, forwards blown forcibly by fan 46, refrigerating chamber 37 is freezed by the cold air that the outlet from the first cover 45 is discharged, cold air is via the return port of the lower openings at the first cover 45, the bottom of guiding refrigerator 44, carry out heat exchange at refrigerator 44, again, fresh cold air is by fan 46 repetitive cycling.Thus, refrigerating chamber 37 is cooled to proper temperature by the control of refrigerating chamber sensor (not shown).

In addition, the cold air that the top to fan 46 is discharged, covers the cold gas exhausting outlet 72 of 45 through the intercommunicating pore of the first differentiation wall 41 from first, is directed to pipe guide 49.And, when the Quilt with air conditioning refrigerator temperature sensor 67 being discharged to refrigerating chamber 35 detects that indoor temperature is more than design temperature, 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, freezed in indoor.The Quilt with air conditioning guiding return port 35b be circulated throughout, become the air with the air in refrigerating chamber 35 or the moisture contained by reserve, and return conduit 51a through the refrigerating chamber of pipe guide 49, through the cold air return path 71 be made up of the back face wall of the first cover 45 and cool room 43, the bottom of refrigerator 44 is directed to from cold air return port 77, carry out heat exchange with refrigerator 44, ozone is forced air-supply by fan again.

Thus, even if refrigerating chamber 35 is leaving the position of refrigerator 44, also cold wind can be forced to blow to the refrigerating chamber be communicated with the refrigerator 44 conduit 48a that blows by fan 46, make the refrigerating chamber air-supply conduit 48a of cold air in pipe guide 49, discharge to refrigerating chamber 35, control the opening and closing of refrigerating chamber valve 50a additionally by refrigerator temperature sensor 67, indoor can be controlled at design temperature thus.

In addition, when being switched room temperature sensor 68 and detecting that indoor temperature is more than design temperature, the switching chamber valve 50b of valve gear 50 is open, to the cold air that switching chamber 36 is discharged, through switching chamber air-supply conduit 48b, discharge cold air from the outlet 36a extending to the switching chamber arranged on the top-open portion of upper drawer box 69, thus, cold air is imported to the front of upper drawer box 69, therefore, it is possible to freeze the collecting article of the position be accommodated near door 39 side to proper temperature.

In addition, the lower mask part 42c distinguishing wall 42 with formation second is integrally formed with outlet 36a, therefore, it is possible to improve the volumetric efficiency of switching chamber 36.

In addition, by the width along upper drawer box 69 on the lower mask part 42c that has in the bottom distinguishing heat insulating member 42a, there is multiple upper nozzle 36a, can freeze in upper drawer box 69 equably to proper temperature, foreign matter etc. can also be suppressed to import second and distinguish in wall 42.

In addition, discharge cold air from the outlet 36b arranged in the position higher than the top-open portion of bottom drawer box 70, the back face wall of upper drawer box 69 is played a role as the guide of the flowing of restriction cold air, and lower portion drawer box 70 imports cold air.

At the Quilt with air conditioning guiding return port 36c of switching chamber 36 Inner eycle, conduit 51b is returned through switching chamber, connected entrance 59 is returned through switching chamber, through the shunt catheter 76 formed at the first cover 45, the bottom that mouth 77 is directed to refrigerator 44 is returned from cold air, carry out heat exchange with refrigerator 44, the cold air carrying out heat exchange is forced air-supply by fan again.

Thus, even if switching chamber 36 is leaving the position of refrigerator 44, also by fan 46, cold wind can be blown conduit 48b forced air supply to the switching chamber be communicated with refrigerator 44, and make cold air in pipe guide 49, discharge to switching chamber 36, and the opening and closing of switching chamber valve 50b is controlled by switching chamber temperature sensor 68, indoor can be controlled at design temperature thus.

In pipe guide 49, refrigerating chamber air-supply conduit 48a and switching chamber air-supply conduit 48b and refrigerating chamber are returned conduit 51a and are extended in the vertical direction and left and right laterally configuration side by side, and switching chamber is returned conduit 51b and is formed at the front that conduit 51a returned by refrigerating chamber.

Therefore, refrigerating chamber air-supply conduit 48a and switching chamber air-supply conduit 48b is set in the approximate centre position of the width of pipe guide 49, configure refrigerating chamber in side in the longitudinal direction relative to body of thermal insulating box 31 and return conduit 51a and switching chamber return conduit 51b, therefore, the feedwater pipe arrangement 55 and distribution incorporating section 52 that are connected with to water pot 53 is configured with in other side, so the distance between the pipe guide 49 of the idle space becoming switching chamber rear and interior case 33 can be made to diminish, can guarantee that the depth size of switching chamber 36 is larger.

In addition, refrigerating chamber air-supply conduit 48a to the branch path 63 in refrigerating chamber 35, is formed by conduit in an approximate vertical direction in the pipe guide 49 of switching chamber 36, therefore, it is possible to the wind path resistance reduced in conduit guarantee the air quantity to refrigerating chamber 35.

In addition, filling with foam insulation materials 34, the first differentiation wall 41 and the second differentiation wall 42 are formed at body of thermal insulating box 31, afterwards, distinguishing wall 41 and second first distinguishes between wall 42, at the back side deployment catheter device 49 of switching chamber 36, therefore, it is possible to make the guide-tube structure of switching chamber 36 be formed simply.

Switching chamber 36 can bring to 4 DEG C refrigerated storage temperature band from the cryogenic temperature of-18 DEG C switches design temperature, and these, by controlling the aperture rate of switching chamber valve 50b according to design temperature, can realize.

Particularly when the design temperature of switching chamber 36 is set to the temperature band lower than refrigerated storage temperature, from the cold air that outlet 36a, 36b of switching chamber discharge, through return port 36c, be directed to switching chamber and return in conduit 51b.The temperature of the cold air of conduit 51a is returned higher than the cold air returning conduit 51b through switching chamber through refrigerating chamber, therefore there is the problem of returning the catheter surface generation condensation of conduit 51a at refrigerating chamber, it is special in low outer temperature is spent, condensation may be frozen, also may flow in refrigerating chamber return conduit 51a by dew in addition, freeze at return path 71.Therefore, by making the heater 57 be pasted onto on refrigerating chamber return conduit 51a work, also making it evaporate even if produce dew, freezing in conduit can be prevented.

In addition, shunt by making cold air in the upstream portion of cold air return path 71 and do not mix, the cold air returning conduit 51a through refrigerating chamber is not flowed downwards, and to switching chamber connected entrance 59 adverse current, prevent the function from the switching chamber return port 36c of pipe guide 49 to the waterproof valve of switching chamber 36 adverse current from being played, prevent conduit from playing a role as adverse current.Therefore, it is possible to stop refrigerating chamber to return cold air return connected entrance 59 from switching chamber return port 36c to switching chamber 36 adverse current through switching chamber, can efficiently switching chamber 36 be freezed to proper temperature, condensation etc. can also be prevented.

In addition, the end of Defrost heater 47, one end society from refrigerator 44 in perspective plane stretches out, return in mouth 77 by cold air, extending at return path 71, therefore when defrosting, heater heat can be utilized to heat return path 71, can improve and prevent condensation and freeze, can reliability be improved.

Refrigerating chamber is returned conduit 51a and switching chamber and is returned conduit 51b through temperature band than switching chamber 36 and low refrigerating chamber 37 region of refrigerating chamber 35, be communicated with the below of refrigerator 44, therefore, return conduit 51a and be configured at returning the highest refrigerating chamber of cold air temperature compared with the temperature band of refrigerating chamber 37 position leaving refrigerating chamber 37, can reduce in refrigerating chamber return conduit 51a and be lowered the temperature, condense, and the problem of freezing in conduit 51a returned by refrigerating chamber.

Therefore, be configured at by conduit 51b can be returned from the switching chamber of to carry out the switching chamber 36 set as the temperature that temperature of refrigerating chamber is close with the close temperature of the temperature of refrigerating chamber 37 front that conduit 51a returned by refrigerating chamber, refrigerating chamber can be reduced and return the condensation in conduit 51a and freeze.

Utilizability in industry

As mentioned above, the refrigerator that the present invention relates to can be applicable to home-use or business refrigerator.

Claims

1. a refrigerator, is configured with refrigerating chamber on top, is configured with refrigerating chamber in bottom, being configured with between described refrigerating chamber and described refrigerating chamber can the switching chamber of switching temperature band, and there is the differentiation wall described refrigerating chamber and described switching chamber distinguished up and down, the feature of this refrigerator is, comprising:

Pipe guide, it is configured in the back side of described switching chamber, and lead the cold air that the refrigerator by the rear being configured at described refrigerating chamber generates described switching chamber; With

Discharge conduit, formed at the lower surface of the described differentiation wall be connected with described pipe guide, discharge described cold air to described switching chamber,

Described differentiation wall has:

Heat-insulating shield;

To the cap assembly covered above and below of described heat-insulating shield; With

In switching chamber, the discharge catheter plate of cold air is guided, wherein at the lower surface of described heat-insulating shield

Described heat-insulating shield and described discharge catheter plate are covered by described cap assembly,

Described differentiation wall and described discharge catheter plate are formed as one by described cap assembly.

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

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

After filling with foam insulation materials foams, described pipe guide, in the below of described differentiation wall, is connected with the bottom of discharging conduit.

3. refrigerator as claimed in claim 1, is characterized in that:

Described cap assembly comprises to the resin component above covered of described heat-insulating shield with to the lower mask part covered below described heat-insulating shield above,

Described differentiation wall was installed before carrying out carbamate filling-foam to refrigerator main body, after foaming, after having assembled pipe guide, will discharge conduit and be connected with described pipe guide.

4. refrigerator as claimed in claim 3, is characterized in that:

Be formed with end difference at described lower mask part, be formed with the outlet of switching chamber being discharged to cold air at described end difference.