CN102109264B

CN102109264B - Refrigerator

Info

Publication number: CN102109264B
Application number: CN201010614138.2A
Authority: CN
Inventors: 堀井慎一
Original assignee: Matsushita Electric Industrial Co Ltd
Current assignee: Panasonic Intellectual Property Management Co Ltd
Priority date: 2009-12-24
Filing date: 2010-12-24
Publication date: 2015-07-01
Anticipated expiration: 2030-12-24
Also published as: CN102109264A; EP2339275B1; EP2339275A2; EP2339275A3

Abstract

The present invention provides a refrigerator (30) comprising a refrigerator compartment (35) at upper side, a freezer compartment (37) at lower side, a convertible compartment (36) between the refrigerator compartment (35) and the freezer compartment (37), a fan (46) located above an evaporator (44) for forcibly delivering produced cold air to individual storage compartments, and a duct unit (49) formed behind the convertible compartment (36), wherein the duct unit (49) has a refrigerator compartment air duct (48a), a convertible compartment air duct (48b) and a refrigerator compartment return duct (51a) arranged laterally in a row. Thus provided is the refrigerator having the duct unit securing sufficient internal capacity with capability of efficiently refrigerating the storage compartments indirectly with single evaporator.

Description

Freezer

Technical field

The present invention relates to a kind of make to generate at cooler cold air forced circulation and freezer that each storeroom different to temperature band cools.

Background technology

Existing freezer is illustrated with reference to Figure 14.Figure 14 is the profilograph representing existing freezer.

As shown in figure 14, casing 1 is the freezer be made up of the heat insulating box 5 being filled with heat-barrier material between interior case 2 and outer container 3.Freezer is divided into multiple storeroom, has refrigerating chamber 6, switching chamber 7, refrigerating chamber 8 from topmost, and the front openings portion of each storeroom is closed by refrigerating-chamber door 9, switching chamber door 10, refrigerating chamber door 11.

Refrigerating chamber 6 and switching chamber 7 are separated by the dividing plate 12 with effect of heat insulation.Equally, switching chamber 7 and refrigerating chamber 8 are separated by the dividing plate 13 with effect of heat insulation.The depth place (rear side of the interior case 2 of refrigerating chamber 6) of dividing plate 13 is provided with the pipeline 14 linked with refrigerating chamber 8.

The refrigerating chamber frame 20 for receiving food and refrigerating chamber box 21 is configured with in refrigerating chamber 6.In addition, the back side of case 2 in freezer 6, is configured with tube sheet (チュ mono-Block オ Application シ mono-ト) 15 (evaporimeters) in contact with wall, the indoor of refrigerated compartment 6.In addition, be configured with cooler 16 at the back side of refrigerating chamber 8, above cooler 16, be configured with fan 17.

In addition, in switching chamber 7, being configured with the switching chamber box 22 for receiving food, being configured with the pipeline 18 that inside has windscreen 19 at the back side of switching chamber 7.

Below the action of existing freezer as constructed as above is described.

The nature that is cooled to of refrigerating chamber 6 cools.Due to tube sheet 15 and the rear-face contact of case 2 in refrigerating chamber 6, therefore, the back side of the interior case 2 of refrigerating chamber 6 is cooling wall, cools the refrigerating chamber frame 20 in refrigerating chamber 6, refrigerating chamber box 21.

On the other hand, being cooled to of refrigerating chamber 8 forces cooling.Utilize the cold wind of fan 17 to the cooler 16 be in cooling chamber to carry out forced circulation, cool in cooling chamber 8.And, turn back to cooler 16 at the cold air of refrigerating chamber 8 Inner eycle.

Equally, being cooled to of switching chamber 7 forces cooling.Utilize fan 17 to make a part of cold air flow ipe 14, the pipeline 18 to the back side being in switching chamber 7 circulates.The cold air of flow ipe 18 is discharged to switching chamber box 22 by windscreen 19, after carrying out heat exchange, is inhaled into the Returning pipe 18 to the cooler 16 being in the back side, turns back to cooler 16 with the air in switching chamber box 22.

Existing cooling chamber described above, owing to refrigerating chamber 6 and switching chamber 7 upper and lower region being scratched with dividing plate 12, therefore, does not form the path making circulating cold air, utilizes the cooling of tube sheet 15 that refrigerating chamber 6 is cooled to suitable temperature.On the other hand, switching chamber 67 utilizes fan 17 to make the evaporation latent heat of cooler 16 to switching chamber 7 Inner eycle, controlling the air conditioning quantity of carrying out circulating, guaranteeing the temperature constant of switching chamber 7 by utilizing windscreen 19.Thus, by constant for the stable maintenance of the food in switching chamber box 22, the freshness of food can be guaranteed.(for example, referring to Japan Kokai JP 2005-195293 publication).

But, in above-mentioned existing formation, in refrigerating chamber 6, do not form wind path, easily become large in the place close to tube sheet 15 and the difference of the premise temperature away from tube sheet 15.In addition, for carrying out Homogeneous cooling by switching chamber 7, the inside of pipeline 18 is divided into multiple path to split into branched mode.That is, pipeline 18 discharges cold air owing to being communicated with multiple outlets of the end face being located at switching chamber 7, thus must arrange multiple outlet in pipeline 18, thus complex structure.Consequently, increased by the wind path resistance of cold air in pipeline 18 that fan 17 imports from cooler 16, the cold air of ormal weight can not be discharged to switching chamber 7, likely be difficult to guarantee suitable temperature.In addition, need to increase wind path area for reducing the wind path resistance of pipeline 18, but when increasing wind path area, likely the depth size of switching chamber 7 diminishes, the internal volume of casing reduces.

Summary of the invention

Freezer of the present invention, possesses from upper: refrigerating chamber, switching chamber, refrigerating chamber; The cooler of cold air is generated at the rear of refrigerating chamber; Be configured at cooler top and by the cooling forced air supply that generates to the fan of each storeroom; Plumbing installation, its rear in switching chamber form to refrigerating chamber and switching chamber air-supply cold air air supply duct and the cold air be discharged in refrigerating chamber is turned back to the refrigerating chamber Returning pipe of cooler.Air supply duct forms the refrigerating chamber air supply duct of being blown to refrigerating chamber by cold air and the switching chamber air supply duct of being blown to switching chamber by cold air independently, and plumbing installation has laterally been arranged side by side refrigerating chamber air supply duct, switching chamber air supply duct and refrigerating chamber Returning pipe.

Thus, simplify the wind path structure in plumbing installation, cooling effectiveness is improved, realization can by the freezer of Homogeneous cooling in the storeroom that links with wind path.

Accompanying drawing explanation

Fig. 1 is the profilograph of the freezer of embodiment of the present invention;

Fig. 2 is the front elevation of the freezer of embodiment of the present invention;

Fig. 3 is the skeleton diagram of the wind path of the freezer illustrated in embodiments of the present invention;

Fig. 4 is the stereogram of the plumbing installation of the freezer of embodiment of the present invention;

Fig. 5 is the first exploded view of the plumbing installation of the freezer of embodiment of the present invention;

Fig. 6 is the second exploded view of the plumbing installation of the freezer of embodiment of the present invention;

Fig. 7 is the 3rd exploded view of the plumbing installation of the freezer of embodiment of the present invention;

Fig. 8 is the skeleton diagram of the plumbing installation of the freezer of embodiment of the present invention;

Fig. 9 is the approximate three-dimensional map of the upper pipe parts of the freezer of embodiment of the present invention;

Figure 10 is the stereogram of the lower pipeline parts of the freezer of embodiment of the present invention;

Figure 11 is the first zoning wall 41 of the freezer representing embodiment of the present invention and the skeleton diagram of the first lid 45;

Figure 12 is the important part stereogram of the first lid 45 of the freezer of embodiment of the present invention;

Figure 13 is the important part key diagram near the cooling chamber 43 of the freezer of embodiment of the present invention;

Figure 14 is the profile of existing freezer.

Detailed description of the invention

Below, with reference to accompanying drawing, present embodiment is described, but the present invention does not limit by present embodiment.In addition, in the present embodiment, if the reveal of freezer is front, front side, above, if the opposition side of reveal be rear, rear side, below, the back side.

(embodiment)

Fig. 1 is the profilograph of the freezer in embodiment of the present invention.

In FIG, the heat insulating box 31 of freezer 30 primarily of employing the outer container 32 of steel plate and forming with case 33 in the ester mouldings such as BS, such as, passes through the foamed heat-insulating materials such as hard polyurethane foam 34 to be filled between outer container 32 and interior case 33 and surrounding insulation.In addition, heat insulating box 31 is divided into multiple storeroom.Topmost is configured with refrigerating chamber 35, and the bottom of refrigerating chamber 35 is configured with switching chamber 36, and foot is configured with refrigerating chamber 37.And switching chamber 36 and refrigerating chamber 37 are separated by the first zoning wall about 41, refrigerating chamber 35 and switching chamber 36 are separated by the second zoning wall about 42.

Possess refrigerating-chamber door 38 in the front openings portion of refrigerating chamber 35, possess switching chamber door 39 in the front openings portion of switching chamber 36, possess refrigerating chamber door 40 in the front openings portion of refrigerating chamber 37, and each front openings portion is supported in opening and closing freely.

Refrigerating chamber 35 is in order to stored refrigerated and the temperature do not freezed is set as lower limit is generally 1 DEG C ~ 5 DEG C, and switching chamber 36 can carry out the switching from cryogenic temperature band to refrigerated storage temperature band, can be set to-18 DEG C ~ 4 DEG C with 1 DEG C of interval.Refrigerating chamber 37 is generally freezen protective and is set as the cryogenic temperature band of-22 DEG C ~-15 DEG C, but is also sometimes such as set as that the low temperature of-30 DEG C ,-25 DEG C is to improve freezen protective state.In addition, when switching chamber 36 is set as refrigerated storage temperature band, by being set as suitable temperature to the aluminium foil heater 41d energising be located at above the first zoning wall 41.

Multiple frame 61 is utilized to be divided into multiple up and down by the indoor of refrigerating chamber 35.

In addition, the bottom in refrigerating chamber 35 is formed with vegetable compartment 64.Vegetable compartment 64 has open-close lid 64a above, form the vegetable box 64b extracted out in front-rear direction.In addition, vegetable compartment 64 has opening portion above, but also can for being accommodated with the formation of the airtight box main body of available upper cover (ボ Star Network スケ mono-ス).

In addition, in the present embodiment, vegetable compartment 64 is formed with the size less than the overall dimensions in refrigerating chamber 35, but vegetable compartment 64 also can coordinate the overall dimensions in refrigerating chamber 35 and form.

Possessing in switching chamber 36 can at the upper drawer box 69 of fore-and-aft direction movement and bottom drawer box 70.On upper drawer box 69, form top-open portion 69a, form bottom surface sections 69b in bottom surface sections, portion forms back face wall 69c overleaf.Equally, on bottom drawer box 70, form top-open portion 70a, form bottom surface sections 70b in bottom surface sections, portion forms back face wall 70c overleaf.

In addition, on outer container 32, be configured with the control substrate 66 that freezer 30 entirety is controlled in the rear side of switching chamber 36.

In addition, be provided with the cooling chamber 43 generating cold air in the rear side of refrigerating chamber 37, be equipped with cooler 44 in the inside of cooling chamber 43.Cooling chamber 43 by with refrigerating chamber 37 separate first cover 45 heat insulation.Above cooler 44, be configured with the fan 46 of the cold air that forced conveyance generates, be provided with the Defrost heater 47 that the frost and ice that are attached to cooler 44 are defrosted in the below of cooler 44.Defrost heater 47 is specifically the Glass tube heater of glass, particularly when cold-producing medium is hydrocarbon series coolant gas, adopts the dual Glass tube heater forming dual glass tube as explosion precaution.

Fig. 2 is the front elevation of the freezer in embodiment of the present invention.

In fig. 2, possess the feedwater box 53 of automatic ice-making plant on the side of the vegetable compartment 64 of the bottom of refrigerating chamber 35, possess ice-making disc 54 on the top of refrigerating chamber 37.The water of automatic ice-making preserved by feedwater box 53, and can be contained with installing or depart from.And the feedwater pipe arrangement 55 be connected with feedwater box 53 extends to refrigerating chamber 37 from refrigerating chamber 35 by switching chamber 36.Water in feedwater box 53 is picked up by not shown motor and imports in feedwater pipe arrangement 55.

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

The plumbing installation 49 with air supply duct 48 such as shown in Fig. 1 sending cold air to refrigerating chamber 35 and switching chamber 36 is possessed at the back side of switching chamber 36.The upper nozzle 36a discharging cold air to switching chamber 36 is configured at the top of the top-open portion 69a of upper drawer box 69.And, and be formed between bottom surface sections 69b on the more top of top-open portion 70a and be opened on plumbing installation 49 and discharge the lower nozzle 36b of cold air to switching chamber 36.

In addition, lower nozzle 36b makes the front of back face wall 69c lower portion drawer box 70 tilt and be placed in the position opposed with back face wall 69c.Thus, back face wall 69c becomes the guide plate of the cold air of discharge, cold air can be imported in bottom drawer box 70.

In addition, switching chamber return port 36c is formed between top-open portion 70a and bottom surface sections 70b, and the cold air in bottom drawer box 70 can be made to return cooler 44.

Referring to Fig. 3, following explanation is done to the configuration of each pipe of the freezer 30 of embodiment of the present invention and wind path.Fig. 3 is the skeleton diagram of the wind path of the freezer that embodiment of the present invention is described.In addition, below main to be described with reference to Fig. 3, but to be described with reference to Fig. 1 and Fig. 2 as required.

In figure 3, on the air supply duct 48 in plumbing installation 49, left and right is transversely arranged refrigerating chamber air supply duct 48a cold air being sent to refrigerating chamber 35 and switching chamber air supply duct 48b cold air being sent to switching chamber 36, and above-below direction is communicated with.Refrigerating chamber air supply duct 48a is formed in the back side of refrigerating chamber 35, and the rear above-below direction of multiple frame 61 is communicated with, and forms refrigerating chamber outlet 62 accordingly with each frame 61.In addition, in plumbing installation 49, the windshield device 50 regulating cold air to the amount of refrigerating chamber 35 and switching chamber is located in the pipeline of refrigerating chamber air supply duct 48a and switching chamber air supply duct 48b, controls the air conditioning quantity passed through respectively.

Refrigerating chamber Returning pipe 51a and the horizontal also row arrangement of air supply duct 48, thus on plumbing installation 49, these three pipelines of refrigerating chamber air supply duct 48a, switching chamber air supply duct 48b, refrigerating chamber Returning pipe 51a are communicated with at above-below direction respectively, and horizontal also row arrangement.Switching chamber Returning pipe 51b is adjacent with refrigerating chamber Returning pipe 51a, and relative to door direction with the configuration of front and back position relationship, switching chamber Returning pipe 51b is configured at the more front of refrigerating chamber Returning pipe 51a.

In addition, preferred pipeline device 49 is formed as at the back side of switching chamber 36 and the size of the area at the back side with degree.Refrigerating chamber air supply duct 48a and switching chamber air supply duct 48b is configured near the central authorities of the left and right width of switching chamber 36 and the width of plumbing installation 49.Refrigerating chamber Returning pipe 51a and switching chamber Returning pipe 51b is located at the one-sided of plumbing installation 49 centered by refrigerating chamber air supply duct 48a and switching chamber air supply duct 48b.

The following describes the flow direction of the cold air of the freezer 30 of the such wind path forming above-mentioned explanation.

The cold air generated by cooler 44 is discharged to refrigerating chamber 35, switching chamber 36 by fan 46.The cold air (arrow A) of being discharged from the outlet 35a of refrigerating chamber 35 by refrigerating chamber air supply duct 48a turns back to cooler 44 (arrow B) from the return port 35b of the lower back being located at refrigerating chamber 35 by refrigerating chamber Returning pipe 51a.The cold air (arrow C) of being discharged to switching chamber 36 by switching chamber air supply duct 48b from be located at switching chamber 36 the back side plumbing installation 49 bottom set by switching chamber return port 36c turn back to cooler 44 (arrow D) by switching chamber Returning pipe 51b.

In addition, refrigerating chamber air supply duct 48a also can be formed with the branch path 63 of left and right branch in refrigerating chamber 35.By possessing branch path 63, the spatial temperature distribution homogenising of the width of refrigerating chamber 35 can be made.

Below, the formation of plumbing installation 49 is described with reference to Fig. 4 ~ Fig. 8.

Fig. 4 is the stereogram of the plumbing installation of freezer in embodiment of the present invention.

In the diagram, laterally the refrigerating chamber Returning pipe 51a sending the refrigerating chamber air supply duct 48a of cold air to refrigerating chamber 35, send the switching chamber air supply duct 48b of cold air to switching chamber 36, the cold air from refrigerating chamber 35 is returned is configured with side by side at the independent also row of plumbing installation 49.

According to above-mentioned formation, do not need, at the multiple outlet of each install pipeline, not produce the wind path resistance in each pipeline yet, therefore, can indirectly and effectively use cooler 44 cold storage indoor.In addition, owing to not producing wind path resistance, thus do not need the sectional area increasing wind path, in addition, owing to being laterally configured to row side by side, thus can increase the depth size of switching chamber 36.

As above, the freezer 30 guaranteeing the internal volume with plumbing installation 49 can be provided.

In addition, the right side before plumbing installation 49 is provided with the recess 56 for receiving feedwater pipe arrangement 55.The wall of the pipe in the refrigerating chamber Returning pipe 51a that the left lower before plumbing installation 49 is formed is provided with aluminium foil heater 57.Aluminium foil heater 57 is when being set to the cryogenic temperature band etc. of temperature lower than refrigerated storage temperature band by switching chamber 36 or be energized to aluminium foil heater 57 when temperature degree is low outside and control the temperature into regulation.In addition, higher than the cold air importing switching chamber Returning pipe 51b in the temperature containing moist cold air after refrigerating chamber 35 circulates by refrigerating chamber Returning pipe 51a.Therefore, cooled in refrigerating chamber Returning pipe 51a, condensing containing moist cold air or freezing after refrigerating chamber circulation may be made.Therefore, be energized to prevent freezing in refrigerating chamber Returning pipe 51a to aluminium foil heater 57.

Fig. 5 is the first exploded view of the plumbing installation of freezer in embodiment of the present invention.Fig. 5 is the figure decomposed by the plumbing installation of freezer, the left side of accompanying drawing be reveal namely before, the right side of accompanying drawing is opposition side and the back side of reveal.

In Fig. 5, plumbing installation 49 by the upper pipe parts 49 that formed by foamed styrene and lower pipeline parts 49b and cover before upper pipe parts 49a and lower pipeline parts 49b resinous pipeline decorating board 49c formed.The lower face of upper pipe parts 49a is connected at above-below direction with the upper surface portion of lower pipeline parts 49b.By the joint face of upper pipe parts 49a and lower pipeline parts 49b seal, before covered by pipeline decorating board 49c.The refrigerating chamber air supply duct 48a such as shown in Fig. 4 in straight through tube device 49 and switching chamber air supply duct 48b is by being connected upper pipe parts 49a with lower pipeline parts 49b and forming pipeline wall.

Windshield device 50 as being enclosed in lower pipeline parts 49b illustrated by Fig. 6.

Fig. 6 is the second exploded view of the plumbing installation of the freezer of embodiment of the present invention.Fig. 6 is the figure decomposed by the plumbing installation of freezer, and the front side of accompanying drawing is opposition side and the back side of reveal, the rear side of accompanying drawing be reveal namely before.

In Fig. 6, the windshield device frame 50c of windshield device 50 is buried underground to be configured at the mode become with the more below of the portion that the is tightly connected 49d of the lower pipeline parts 49b of the joint face of upper pipe parts 49a.

The portion that the is tightly connected 49d of lower pipeline parts 49b is the joint face with the upper pipe parts 49a of plumbing installation 49.And the portion 49d that is tightly connected is positioned at the more top of bottom surface sections 70b in the more below of the top-open portion 70a of the bottom drawer box 70 such as shown in Fig. 1, and is located at the position corresponding with the back face wall 70c of bottom drawer box 70.

Fig. 7 is the 3rd exploded view of the plumbing installation of the freezer of embodiment of the present invention.Fig. 7 is the figure decomposed by the plumbing installation of freezer, and the left side of accompanying drawing is opposition side and the back side of reveal, the right side of accompanying drawing be reveal namely before.

In Fig. 7, the linking part between the parts of refrigerating chamber air supply duct 48a, switching chamber air supply duct 48b, refrigerating chamber Returning pipe 51a and the first zoning wall 41 and the second zoning wall 42, is sealed by the seal member 79 of the periphery in each pipeline tapping portion.Linking part thus between peventing member produces gap.

In addition, in the present embodiment, a seal member 79 that will have the length of the periphery degree of each opening portion is installed along pipeline tapping, but the seal member of the integration after also can installing perforate offer hole in the position in each pipeline tapping portion.In addition, the sealing surface preferably installing seal member 79 does not have step at installed surface.Thus, seamlessly seal member can be installed, thus can cooling gas leakage be prevented.

In addition, in the opposition side of the refrigerating chamber Returning pipe 51a of lower pipeline parts 49b, being that the mode of fore-and-aft direction purchases distribution incorporating section 52 such as shown in Fig. 7 and recess 56 relative to reveal.

At this, distribution incorporating section 52 and recess 56 are described as follows.

Such as, when switching chamber 36 is set as cryogenic temperature band, the water in feedwater pipe arrangement 55 likely freezes.Therefore, the anti-freeze heater reeling not shown in the periphery of feedwater pipe arrangement 55 is to prevent from freezing.In addition, feedwater pipe arrangement 55 is configured between interior case 33 and plumbing installation 49, and formation is embedded in the recess 56 of the inside of plumbing installation 49 and carries out heat insulation.Now, also distribution incorporating section 52 can be set in the inside of plumbing installation 49, the distribution of storage windshield device 50 and connector.

That is, by forming recess 56, distribution incorporating section 52, the accommodation space of feedwater pipe arrangement 55 and the fore-and-aft direction needed for distribution incorporating section 52 can be reduced, the internal volume of switching chamber 36 can be increased.In addition, recess 56, distribution incorporating section 52, not to be located at the opposition side of refrigerating chamber Returning pipe 51a with the partly overlapping mode of refrigerating chamber air supply duct 48a, the switching chamber air supply duct 48b and refrigerating chamber Returning pipe 51a that are formed with plumbing installation 49, prevent the reduction of thermal insulation.

Fig. 8 is the skeleton diagram of the plumbing installation of freezer in embodiment of the present invention.Fig. 8 be make the plumbing installation of freezer from reveal namely before the figure that sees to opposition side and the back side of reveal.

In Fig. 8, distribution incorporating section 52 is by being formed at upper pipe parts 49a or the stage portion between lower pipeline parts 49b and pipeline decorating board 49c 74 is formed.Distribution incorporating section 52 is communicated with the portion that the is tightly connected 49d of lower pipeline parts 49b via upper pipe parts 49a.Distribution incorporating section 52 is formed among upper pipe parts 49a and lower pipeline parts 49b in the front of the recess 56 of storage feedwater pipe arrangement 55.The peripheral part of upper pipe parts 49a and lower pipeline parts 49b has the structure tilted to become large mode towards the sectional area of be tightly connected portion 49d upper pipe parts 49a and lower pipeline parts 49b on conduit component.Specifically, the side surface part of upper pipe parts 49a is formed from upper surface portion towards lower face by the gradient shape (circular cone) expanded gradually.In addition, the side surface part of lower pipeline parts 49 is formed from lower face towards upper surface portion by the gradient shape (circular cone) expanded gradually.Therefore, the sealing area due to the portion 49d that is tightly connected becomes large, thus can further improve the sealing of the portion 49d that is tightly connected, the low cold air of step-down leakage externally of going forward side by side.

In addition, owing to being easy to guarantee stage portion 74 being tightly connected between portion 49d and pipeline decorating board 49c, be thus formed with distribution incorporating section 52 being across the recess that the upper pipe parts 49a that such as formed by styrene materials and lower pipeline parts 49b formed from outside towards inner side.Thus, the idle space of plumbing installation effectively can be applied flexibly as distribution incorporating section 52.Its result can prevent water from immersing distribution, meanwhile, can improve effective internal volume of switching chamber 36.

Below, use Fig. 9 and Figure 10 that the upper pipe parts 49a of the plumbing installation 49 of above-mentioned explanation and the connection of lower pipeline parts 49b are described.

Fig. 9 is the stereogram of the upper pipe parts of the freezer of embodiment of the present invention.Figure 10 is the stereogram of the lower pipeline parts of freezer in embodiment of the present invention.

In figure 9 and in figure 10, the upper pipe parts 49a that such as formed by foamed styrene of plumbing installation 49 and lower pipeline parts 49b forms the wind path of cold air.As mentioned above, refrigerating chamber air supply duct 48a, switching chamber air supply duct 48b in through upper pipe parts 49a, each pipeline of refrigerating chamber Returning pipe 51a are prevent the mixed flow of cold air and interdicted by wall, and arrange independently.

In fig .9, three protuberances 78 are formed with on the surface of upper pipe parts 49a as an example.Protuberance 78 makes it give prominence to from model for local compression upper pipe parts 49a in molder, and it is shaped by foamed styrene.In addition, between refrigerating chamber air supply duct 48a and switching chamber air supply duct 48b, be provided with protuberance 78b, between switching chamber air supply duct 48b and refrigerating chamber Returning pipe 51a, be provided with protuberance 78a.Like this, by forming multiple protuberance and protuberance 78, protuberance 78a, protuberance 78b at upper pipe parts 49a, the forming accuracy of the wall of the cold air of blocking pipeline enclosure improves.

But usually, stress concentrates on the protuberance 78 in the shaping of foamed styrene.Therefore, protuberance 78 forms the recess of the state more recessed than the face of periphery.In addition, for improve blocking pipeline enclosure cold air wall forming accuracy and at pipeline enclosure, protuberance 78a, protuberance 78b are set time, recess also results from pipeline enclosure.Illustrated by above-mentioned Fig. 7, the periphery in the respective pipeline tapping portion of the linking part when between refrigerating chamber air supply duct 48a, switching chamber air supply duct 48b and the first zoning wall 41 of refrigerating chamber Returning pipe 51a and the parts of the second zoning wall 42 is sealed by seal member 79, seal member 79 is installed.Therefore, utilize the recess disjunction sealing surface of protuberance 78a, protuberance 78b, need to prevent from producing gap between seal member 79 and pipeline tapping portion.Therefore, preferred protuberance 78a, protuberance 78b guarantee the planar portions of more than 3mm relative to pipeline tapping portion.Thus, owing to guaranteeing forming accuracy and sealing, thus reliability can be improved.

Figure 10 is the stereogram of the lower pipeline parts of the freezer represented in embodiment of the present invention.

In Fig. 10, arrange multiple protuberance 78 because lower pipeline parts 49b is difficult to avoid sealing, thus protuberance 78c is arranged in addition in switching chamber Returning pipe 51b, and protuberance 78d is arranged in addition in the air supply duct 48 of refrigerating chamber switching chamber interflow.Thus, can suppress to produce step at sealing surface, the wind path path hindering pipe can be prevented simultaneously.

Below, use Figure 11 and Figure 12 that the formation of the first zoning wall 41 and the first lid 45 is described.

Figure 11 is the first zoning wall 41 of the freezer represented in embodiment of the present invention and the skeleton diagram of the first lid 45.

In fig. 11, possess at the first zoning wall 41 be connected with the lower face of plumbing installation the refrigerating chamber be communicated with refrigerating chamber Returning pipe 51a and return connected entrance 58 and the switching chamber that is communicated with switching chamber Returning pipe 51b returns connected entrance 59.Return connected entrance 59 in reveal i.e. front side configuration switching chamber, in the opposition side of reveal, namely rear side configuration refrigerating chamber returns connected entrance 58, and both have opening portion, are communicated with cooling chamber 43.

First zoning wall 41 by the first zoning wall 41a of being formed by foamed styrene, cover first above the first zoning wall 41a above zoning lid 41b, cover first below the first zoning wall 41a below zoning lid 41c form.And, on first, be filled with polyurethane between zoning lid 41c below zoning lid 41b and first, meanwhile, the first zoning wall 41 be fixed on heat insulating box 31.First zoning wall 41 was assembled in the position of regulation before polyurethane is filled in heat insulating box 31, the polyurethane being filled in heat insulating box 31 was used for the fixing of the first zoning wall 41, improved the heat-proof quality of freezer 30 thus.

First lid 45 is by resinous decorative panel 45a and forms second of the maintaining part of fan 46 and cold air path by heat-barrier materials such as styrene materials and cover 45b and formed.And, possess the cold gas exhausting outlet 72 be communicated with hermetically with the first zoning wall 41 to refrigerating chamber 35 and switching chamber 36 transporting cold-air at the back side of decorative panel 45a, and return cold air and switching chamber with refrigerating chamber and return the shunt conduit 76 that mode that cold air do not collaborate carries out shunting.

Below, use Figure 12 that the formation at the back side of the first lid 45 is described.

Figure 12 is the important part stereogram of the first lid 45 of freezer in embodiment of the present invention.

In Figure 12, such as and be located at the front of the cooler 44 shown in Fig. 1, cold air return path 71 is separated by the back face wall of cooler 44, separating means 75, cooling chamber 43 and is formed the first lid 45.First lid 45 possesses: fan 46, cold gas exhausting outlet 72 to refrigerating chamber 35 and switching chamber 36 transporting cold-air.In addition, between fan 46 and cold air return path 71, be formed with cold gas exhausting outlet 72, between cold gas exhausting outlet 72 and cold air return path 71, be formed with separating means 75.

The refrigerating chamber being directed through the first zoning wall 41 to cold air return path 71 returns the cold air that connected entrance 58 and switching chamber return connected entrance 59.Be formed to seal with the first zoning wall 41 to be communicated with and to return cold air and switching chamber with refrigerating chamber at the upstream side of cold air return path 71 and return the shunt conduit 76 that mode that cold air do not collaborate carries out shunting.

In the present embodiment, return mode that cold air shunts and be formed with to make switching chamber return cold air and refrigerating chamber the shunt conduit 76 returning connected entrance 59 with switching chamber and be connected.Specifically, form as follows, only form shunt conduit 76 at upstream side, from midway, make refrigerating chamber return cold air (arrow B) and switching chamber return cold air (arrow D) and collaborate.

This is based on following reason.When the cold air (arrow D) that have passed switching chamber Returning pipe 51b and the cold air (arrow B) that have passed refrigerating chamber Returning pipe 51a are collaborated by cold air return path 71, the refrigerating chamber via the first zoning wall 41 returns connected entrance 58 and switching chamber and returns connected entrance 59 and make cold air adverse current.And temperature returns the high refrigerating chamber of cold air (arrow D) than switching chamber and returns cold air (arrow B) and return connected entrance 59 by switching chamber and rise, from switching chamber return port 36c to switching chamber 36 adverse current.Consequently, effectively switching chamber 36 can not be cooled to suitable temperature, also condensation etc. occur in addition.

As described above, by only forming shunt conduit 76 at upstream side, shunting cold air in the upstream portion of cold air return path 71 and can not mix.Thus, below can not be flowed to by the cold air of refrigerating chamber Returning pipe 51a, and return connected entrance 59 adverse current to switching chamber, prevent from the switching chamber return port 36c of plumbing installation 49 to adverse current in switching chamber 36.That is, shunt conduit 76 plays a role as counterflow-preventing pipe.

In addition, shunt conduit 76 is only formed in upstream portion for guaranteeing the opening section of cold air return path 71 long-pending, but, if can guarantee that the opening section in the downstream of cold air return path 71 amasss, then also can extend and be formed to downstream part, thus, counterflow-preventing effect can be improved.

In addition, the cold air being arranged through cold air return path 71 in the bottom of the bottom 75a of separating means 75 turns back to the cold air return port 77 of the bottom of cooler 44, at bottom 75a opening.

Below, illustrate above-mentioned explanation first lid 45 and cooling chamber 43 near formation.

Figure 13 is the important part key diagram near the cooling chamber 43 of the freezer of embodiment of the present invention.

In Figure 13, be provided with the cold air return port 77 being turned back to the bottom of cooler 44 by the cold air of cold air return path 71 in the bottom of separating means 75.And the end being substantially horizontally configured at the Defrost heater 47 of the bottom of cooler 44 is exposed from an end of cooler 44, and by extending configuration in cold air return port 77 in cold air return path 71.

Thus, prevent the cold air of cold of the moist Quilt with air conditioning cooler 44 of the band in cold air return path 71, refrigerating chamber from cooling and freezing in cold air return path 71.

Below the action of freezer 30 as constructed as above, effect are described.

A part for the cold air that the cooler 44 of such as cooling chamber 43 as shown in Figure 1 generates is sent to front forcibly by fan 46, and the cold air that refrigerating chamber 37 is discharged by the outlet from the first lid 45 cools.Cold air is directed to the bottom of cooler 44 via the return port that the bottom that first covers 45 is offered, and carries out heat exchange, then circulated by fan 46 at cooler 44.Thus, refrigerating chamber 37 is controlled in suitable temperature by the control of refrigerating chamber sensor (not shown).

In addition, the cold air being discharged to the top of fan 46 is from intercommunicating pore import pipe device 49 through the first zoning wall 41 of the cold gas exhausting outlet 72 of the first lid 45.And, when being judged as more than indoor temperature is for design temperature utilizing refrigerator temperature sensor 67, the refrigerating chamber windscreen 50a of open windshield device 50, makes it discharge cold air by refrigerating chamber air supply duct 48a from the outlet 35 of refrigerating chamber and carries out cooling (arrow A of Fig. 3).And the cold air cooled refrigerating chamber 35 becomes air in refrigerating chamber 35, is contained in the moist air of band of repertory, is directed to return port 35b (arrow B of Fig. 3).Thereafter, cold air also imports to the bottom of cooler 44 from cold air return port 77 by the cold air return path 71 be made up of the back face wall of the first lid 45 and cooling chamber 43 by the refrigerating chamber Returning pipe 51a of plumbing installation 49.And, by carrying out heat exchange with cooler 44, utilize fan 46 by cold air forced air supply again.

In addition, by utilizing fan 46 by cold air forced air supply to the refrigerating chamber air supply duct 48a be communicated with cooler 44, even if thus be configured at and leave cooler 44 and configure, also can cool refrigerating chamber 35 easily.That is, by the refrigerating chamber air supply duct 48a in plumbing installation 49, cold air is discharged to refrigerating chamber 35, utilizes refrigerator temperature sensor 67 to control the opening and closing of refrigerating chamber windscreen 50a, indoor are controlled at design temperature.

In addition, when being judged as more than indoor temperature is for design temperature when utilizing switching chamber temperature sensor 68, the switching chamber windscreen 50b of open windshield device 50, the cold air of discharging to switching chamber 36 is discharged from the upper nozzle 36a of switching chamber 36 by switching chamber air-supply passage 48b.

Cold air is imported in top drawer box 69, cold air (Fig. 3 arrow C) is discharged in addition from lower nozzle 36b, the back face wall 69c of upper drawer box 69 is played a role as the guide of the flowing of restriction cold air, in lower portion drawer box 70, imports cold air.

In addition, import switching chamber return port 36c at the Quilt with air conditioning of switching chamber 36 Inner eycle, return connected entrance 59 (the arrow D of Fig. 3) by switching chamber Returning pipe 51b by switching chamber.And, imported the bottom of cooler 44 by the shunt conduit 76 that is formed at the first lid 45 from cold air return port 77, carry out heat exchange with cooler 44, the cold air carrying out heat exchange is carried out forced air supply by fan 46 again.

Thus, even if switching chamber 35 is positioned at the position leaving cooler 44, also can utilize fan 46 by cold air forced conveyance to the switching chamber air supply duct 48b be communicated with cooler 44, by discharging cold air to switching chamber 36 in plumbing installation 49.In addition, due to the opening and closing utilizing switching chamber temperature sensor 68 to control switching chamber windscreen 50b, thus can by switching chamber 36 internal control built in design temperature.

As mentioned above, the present invention is communicated with refrigerating chamber air supply duct 48a, switching chamber air supply duct 48b, refrigerating chamber Returning pipe 51a at above-below direction independently in plumbing installation 49, row will be laterally configured into about them simultaneously, in addition, switching chamber Returning pipe 51b is formed at reveal and the front of refrigerating chamber Returning pipe 51a.

In addition, refrigerating chamber air supply duct 48a and switching chamber air supply duct 48b is set near the central authorities of the width of plumbing installation 49, configures refrigerating chamber Returning pipe 51a and switching chamber Returning pipe 51b a side along the longitudinal direction relative to heat insulating box 31.And, the feedwater pipe arrangement 55 and distribution incorporating section 52 that are connected with feed trough 53 is configured with the opposing party.Thus, the distance between the plumbing installation 49 of the wasted space becoming switching chamber 36 rear and interior case 33 can be reduced, thus significantly can guarantee the depth size of switching chamber 36.

In addition, refrigerating chamber air supply duct 48a from the plumbing installation 49 of switching chamber 36 to the branch path 63 in refrigerating chamber 35, pipeline can be formed in roughly vertical direction, therefore, the wind path resistance in pipeline can be reduced, and the sufficient air quantity to refrigerating chamber 35 can be guaranteed.This is due to the cause arranged of not wriggled by pipeline.

In addition, in the present invention, filling is such as foamed the foamed heat-insulating materials 34 such as ammonia ester, and the first zoning wall 41 and the second zoning wall 42 are formed on heat insulating box 31.And, by the back side configuring pipes parts 49 of the switching chamber 36 between the first zoning wall 41 and the second zoning wall 42, the pipeline of switching chamber 36 can be made to form simple.

In addition, in the present invention, switching chamber 36, by controlling the aperture rate of switching chamber windscreen 50b, can switch design temperature at the refrigerated storage temperature band of cryogenic temperature band ~ 4 DEG C of-18 DEG C.

Particularly, when the design temperature of switching chamber 36 is set to the temperature band lower than refrigerated storage temperature, the cold air of being discharged by upper nozzle 36a, the lower nozzle 36b from switching chamber 36 is imported in switching chamber backward channel 51b by switching chamber return port 36c.Now, high by the cold air temperature of switching chamber Returning pipe 51b by the cold air ratio of refrigerating chamber Returning pipe 51a, therefore, may condense at the pipe surface of refrigerating chamber Returning pipe 51a.Particularly when atmospheric temperature is low, also may occur that the moisture condensed freezes or dew to flow in refrigerating chamber Returning pipe 51a and to freeze at cold air return path 71.Therefore, the aluminium foil heater 57 of refrigerating chamber Returning pipe 51a is located in running, even if dew produces, also can prevent freezing in pipeline by evaporation.

In addition, in the present invention, the shunt conduit 76 being located at the upstream portion of cold air return path 71 makes not flowed downwards by the cold air of refrigerating chamber Returning pipe 51a, but return connected entrance 59 adverse current to switching chamber 59, prevent from the switching chamber return port 36c of plumbing installation 49 to adverse current in switching chamber 36.That is, shunt conduit 76 plays a role as counterflow-preventing pipe, stops refrigerating chamber to return cold air and returns connected entrance 59 from switching chamber return port 36c to the adverse current of switching chamber 36 by switching chamber.Thus, switching chamber 36 can be cooled to suitable temperature effectively, condensation etc. can be prevented simultaneously.

In addition, the present invention makes the end of Defrost heater 47 on perspective plane from cooler 44 expose, and configures by extending in cold air return port 77 in cold air return path 71.Therefore, when defrosting, available heater heat heats in cold air return path 71, prevents condensation and freezes, meanwhile, can improve reliability during action.

In addition, in the present invention, the below that refrigerating chamber Returning pipe 51a and switching chamber Returning pipe 51b to be communicated in cooler 44 by temperature band lower than the region of the refrigerating chamber 37 of switching chamber 36 and refrigerating chamber 35 is arranged.Thus, the temperature returning cold air is configured at higher than the refrigerating chamber Returning pipe 51a of the temperature band of refrigerating chamber 37 position leaving refrigerating chamber 37.Its result can reduce refrigerating chamber Returning pipe 51a internal cause cold and produce condensation and refrigerating chamber Returning pipe 51a in the possibility freezed.

Namely, be configured at the front of refrigerating chamber Returning pipe 51a by the switching chamber Returning pipe 51b that can be set to the switching chamber 36 of the temperature close with temperature of refrigerating chamber from the temperature close with the temperature of refrigerating chamber 37, the condensation in refrigerating chamber Returning pipe 51a can be reduced and freeze.

Claims

1. a freezer, is characterized in that, comprising:

The refrigerating chamber (35) on top and the refrigerating chamber (37) of bottom;

Be located between described refrigerating chamber and described refrigerating chamber, the switching chamber (36) that can switch temperature band;

At the rear of described refrigerating chamber, generate the cooler (44) of the cold air be used in cold room;

Be configured at described cooler top and by the fan (46) of generated cold air forced air supply to each storeroom;

Plumbing installation (49), it is arranged at the rear of described switching chamber, comprises the refrigerating chamber air supply duct (48a) of being blown to described refrigerating chamber by cold air, the switching chamber air supply duct (48b) of being blown to described switching chamber by cold air and makes the described cold air be discharged in described refrigerating chamber turn back to the refrigerating chamber Returning pipe (51a) of described cooler; With

Air-supply to the cold air of described switching chamber is made to turn back to the switching chamber Returning pipe (51b) of described cooler (44), wherein,

Described freezer also comprises and carries out according to the temperature band of described switching chamber of setting the heater (57) that is energized, and described heater (57) is arranged in described refrigerating chamber Returning pipe (51a),

The described refrigerating chamber air supply duct (48a) blown to described refrigerating chamber by described cold air and the described switching chamber air supply duct (48b) blown to described switching chamber by described cold air is laterally formed abreast in described plumbing installation (49) left and right, and, the described refrigerating chamber air supply duct (48a) blown to described refrigerating chamber by cold air, the described switching chamber air supply duct (48b) blown to described switching chamber by cold air and described refrigerating chamber Returning pipe (51a) are laterally formed as row independently abreast

Described refrigerating chamber Returning pipe (51a) and described switching chamber Returning pipe (51b) are independently formed in the front and back of described plumbing installation (49), configure described switching chamber Returning pipe (51b) in front, configure described refrigerating chamber Returning pipe (51a) in the wings.

2. freezer as claimed in claim 1, wherein, described plumbing installation has upper pipe parts (49a) and lower pipeline parts (49b), and possesses the portion that is tightly connected (49d) connecting described upper pipe parts and described lower pipeline parts at above-below direction.

3. freezer as claimed in claim 1, wherein, regulates the windshield device of the air conditioning quantity to refrigerating chamber (50) to be located in described plumbing installation (49).

4. freezer as claimed in claim 1, wherein, the return port (36c) that described switching chamber Returning pipe (51b) is communicated with is configured at the bottom of described plumbing installation.

5. freezer as claimed in claim 2, wherein, the peripheral part of described upper pipe parts and described lower pipeline parts is to be tightly connected portion and make the sectional area of connecting portion become large mode to tilt described in towards each other.

6. freezer as claimed in claim 2, wherein, described plumbing installation possesses for arranging the feedwater recess of pipe arrangement and the distribution incorporating section (52) for receiving electric distribution, and described distribution incorporating section is shaped by heat-barrier material.

7. freezer as claimed in claim 1, wherein, at least one party of described plumbing installation (49) between described refrigerating chamber air supply duct (48a) and described switching chamber air supply duct (48b) or between described switching chamber air supply duct (48b) and described refrigerating chamber Returning pipe (51a) is provided with protuberance.

8. freezer as claimed in claim 4, wherein, at least one party of described plumbing installation in described switching chamber Returning pipe, in described refrigerating chamber air supply duct or in described switching chamber air supply duct is provided with protuberance (78a, 78b).

9. freezer as claimed in claim 4, wherein, possesses the first zoning wall (41) by described switching chamber and the upper and lower zoning of described refrigerating chamber, when described first zoning wall connects described plumbing installation, the refrigerating chamber be communicated with described refrigerating chamber Returning pipe is returned connected entrance (58) and the switching chamber that is communicated with described switching chamber Returning pipe to return connected entrance (59) and be configured at described first zoning wall at fore-and-aft direction, described refrigerating chamber returns connected entrance (58) and described switching chamber and returns connected entrance (59) and have opening portion.

10. freezer as claimed in claim 9, wherein, possess and cover described cooler and the described refrigerating chamber and described cooler are separated first lid, described first lid is communicated with the first zoning wall, possess and return what returned by described refrigerating chamber that connected entrance and described switching chamber return connected entrance the return path that cold air imports the bottom of described cooler, described return path is formed at least in the shunt conduit (76) that return cold air shunting that return cold air and described switching chamber of upstream side by described refrigerating chamber.

11. freezers as claimed in claim 10, wherein, possess: by be attached to the frost of the described cooler of the below being located at described cooler and ice removing Defrost heater, cover described cooler and described Defrost heater described first lid, with the cold air return path (71) being formed at the described first described cooler covered and being communicated with, described Defrost heater configures in the mode at least extended in described cold air return path.