CN102109264A

CN102109264A - Refrigerator

Info

Publication number: CN102109264A
Application number: CN2010106141382A
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: 2011-06-29
Anticipated expiration: 2030-12-24
Also published as: EP2339275A2; EP2339275B1; EP2339275A3; CN102109264B

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 freezer that makes the cold air forced circulation that generates at cooler and each different storeroom of temperature band is cooled off.

Background technology

Be illustrated with reference to Figure 14 for existing freezer.Figure 14 is the profilograph of the existing freezer of expression.

As shown in figure 14, casing 1 freezer that the heat insulating box 5 that is filled with heat-barrier material between interior case 2 and outer container 3 constitutes of serving as reasons.Freezer is divided into a plurality of storerooms, has refrigerating chamber 6, switches chamber 7, refrigerating chamber 8 from topmost, and the front openings portion of each storeroom is by refrigerating-chamber door 9, switching chamber door 10, refrigerating chamber door 11 sealings.

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 is separated by the dividing plate 13 with effect of heat insulation.The depth place of dividing plate 13 (rear side of the interior case 2 of refrigerating chamber 6) is provided with the pipeline 14 that links with refrigerating chamber 8.

In refrigerating chamber 6, dispose the refrigerating chamber frame 20 and the refrigerating chamber box 21 that are used to take in food.In addition, the back side at the interior case 2 of freezer 6 disposes tube sheet (チュ one Block オ Application シ one ト) 15 (evaporimeters) in contact with wall, refrigerated compartment 6 indoor.In addition, dispose cooler 16, above cooler 16, dispose fan 17 at the back side of refrigerating chamber 8.

In addition, in switching chamber 7, dispose the switching chamber box 22 that is used to take in food, dispose the pipeline 18 that inside has windscreen 19 at the back side of switching chamber 7.

Action to the existing freezer that as above constitutes describes below.

The nature that is cooled to of refrigerating chamber 6 cools off.Because tube sheet 15 contacts with the back side of the interior case 2 of refrigerating chamber 6, therefore, the back side of the interior case 2 of refrigerating chamber 6 is cooling wall, and refrigerating chamber frame 20, refrigerating chamber box 21 in the refrigerating chamber 6 are cooled off.

On the other hand, being cooled to of refrigerating chamber 8 forced cooling.The cold wind that utilizes 17 pairs in fan to be in the cooler 16 in the cooling chamber carries out forced circulation, to cooling off in the cooling chamber 8.And the cold air of circulation turns back to cooler 16 in refrigerating chamber 8.

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

More than therefore Shuo Ming existing cooling chamber, does not form the path that makes circulating cold air owing to dividing plate 12 refrigerating chamber 6 and switching chamber 7 upper and lower regions are scratched, and utilizes the cooling of tube sheet 15 that refrigerating chamber 6 is cooled to suitable temperature.On the other hand, switch chamber 67 and utilize fan 17 to make evaporation latent heat circulation in switching chamber 7 of cooler 16,, guarantee to switch the temperature constant of chamber 7 by the air conditioning quantity of utilizing windscreen 19 controls to circulate.Thus, can the stable maintenance of switching the food in the chamber box 22 is constant, can guarantee the freshness of food.(for example, opening the 2005-195293 communique) with reference to a day disclosure special permission spy.

But, in above-mentioned existing formation, do not constitute wind path in the refrigerating chamber 6, becoming big near the place of tube sheet 15 with away from the place temperature difference of tube sheet 15 is easy.In addition, evenly cool off, the inside of pipeline 18 is divided into a plurality of paths in the mode that splits into many for switching in the chamber 7.That is, pipeline 18 is discharged cold air owing to being communicated with a plurality of outlets of being located at the end face that switches chamber 7, thereby a plurality of outlets must be set in pipeline 18, thus complex structure.Consequently, increased by the wind path resistance of cold air in pipeline 18 that fan 17 imports, the cold air of ormal weight can not be discharged to and switch chamber 7, might be difficult to guarantee suitable temperature from cooler 16.In addition, for the wind path resistance that reduces pipeline 18 needs to increase the wind path area, but under the situation that increases the wind path area, might switch the depth size decreases of chamber 7, the internal volume of casing reduces.

Summary of the invention

Freezer of the present invention possesses from last: refrigerating chamber, switching chamber, refrigerating chamber; Generate the cooler of cold air at the rear of refrigerating chamber; The cooling forced air supply that is disposed at the top of cooler and will generates is to the fan of each storeroom; Plumbing installation, it constitutes to refrigerating chamber and switches the air supply duct of chamber air-supply cold air and will be discharged to the refrigerating chamber Returning pipe that cold air in the refrigerating chamber turns back to cooler at the rear of switching the chamber.Air supply duct form independently with cold air to the refrigerating chamber air supply duct of refrigerating chamber air-supply and with cold air to the switching chamber air supply duct that switches the chamber air-supply, plumbing installation laterally has been arranged side by side the refrigerating chamber air supply duct, has switched chamber air supply duct and refrigerating chamber Returning pipe.

Thus, simplified the wind path structure in the plumbing installation, cooling effectiveness is improved, the freezer that evenly cools off in the storeroom that realization can link with wind path.

Description of drawings

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 in the explanation embodiments of the present invention;

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

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

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

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

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

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

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

Figure 11 is that the first zoning wall 41 and first of the freezer of expression embodiment of the present invention covers 45 skeleton diagram;

Figure 12 be embodiment of the present invention freezer first lid 45 want portion's stereogram;

Figure 13 wants portion's key diagram near the cooling chamber 43 of freezer of embodiment of the present invention;

Figure 14 is the profile of existing freezer.

The specific embodiment

Below, with reference to the description of drawings present embodiment, but the present invention is not limited by present embodiment.In addition, in the present embodiment, the reveal of establishing freezer is the place ahead, front side, front, and the opposition side of establishing reveal is rear, rear side, back, the back side.

(embodiment)

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

In Fig. 1, the heat insulating box of freezer 30 31 mainly constitutes by the outer container 32 that has used steel plate with the interior case 33 of ester mouldings such as BS, for example by with 34 fillings of foamed heat-insulating materials such as hard polyurethane foam between outer container 32 and interior case 33 and with heat insulation on every side.In addition, heat insulating box 31 is divided into a plurality of storerooms.Topmost disposes refrigerating chamber 35, and the bottom of refrigerating chamber 35 disposes switches chamber 36, and foot disposes refrigerating chamber 37.And, to switch chamber 36 and refrigerating chamber 37 and separate up and down by the first zoning wall 41, refrigerating chamber 35 and switching chamber 36 separate up and down by the second zoning wall 42.

Front openings portion at refrigerating chamber 35 possesses refrigerating-chamber door 38, possesses the chamber of switching door 39 in the front openings portion of switching chamber 36, possesses refrigerating chamber door 40 in the front openings portion of refrigerating chamber 37, and opens and closes each front openings portion of supporting freely.

Refrigerating chamber 35 is generally 1 ℃～5 ℃ for stored refrigerated and temperature that will not freeze is set at lower limit, switches chamber 36 and can carry out from the switching of cryogenic temperature band to the refrigerated storage temperature band, can be set to-18 ℃～4 ℃ with 1 ℃ of interval.Refrigerating chamber 37 is generally freezing preservation and is set at-22 ℃～-15 ℃ cryogenic temperature band, but also for example is set at-30 ℃ ,-25 ℃ low temperature sometimes to improve freezing preservation state.In addition, will switch under the situation that chamber 36 is set at the refrigerated storage temperature band, by the top aluminium foil heater 41d energising of being located at the first zoning wall 41 is set at suitable temperature.

Utilize a plurality of 61 refrigerating chamber 35 indoor be divided into up and down a plurality of.

In addition, the bottom in refrigerating chamber 35 is formed with vegetable compartment 64.Vegetable compartment 64 has open-close lid 64a in front, constitutes the vegetable box 64b of direction extraction forwards, backwards.In addition, vegetable compartment 64 has peristome in the above, but also can be for taking in the formation of the airtight box main body of available upper cover (ボ Star Network スケ one ス).

In addition, in the present embodiment, vegetable compartment 64 constitutes with the size littler than the overall dimensions in the refrigerating chamber 35, but vegetable compartment 64 also can cooperate the overall dimensions in the refrigerating chamber 35 and constitute.

In switching chamber 36, possess the upper drawer box 69 and the bottom drawer box 70 that can move at fore-and-aft direction.Peristome 69a above the formation on upper drawer box 69 constitutes bottom surface sections 69b in bottom surface sections, and portion constitutes back face wall 69c overleaf.Equally, peristome 70a above the formation on bottom drawer box 70 constitutes bottom surface sections 70b in bottom surface sections, and portion constitutes back face wall 70c overleaf.

In addition, on outer container 32, dispose the control substrate 66 that freezer 30 integral body are controlled in the rear side of switching chamber 36.

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

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

In Fig. 2, possess the feedwater box 53 of automatic ice-making plant on the next door 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 that feedwater box 53 storage automatic ice-makings are used, and can be contained with installing or break away from.And the feedwater pipe arrangement 55 that is connected with feedwater box 53 extends to refrigerating chamber 37 from refrigerating chamber 35 by switching chamber 36.Water in the feedwater box 53 picks up and imports in the feedwater pipe arrangement 55 by not shown motor.

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

Possesses the plumbing installation with air supply duct 48 49 for example shown in Figure 1 that send cold air to refrigerating chamber 35 and switching chamber 36 at the back side of switching chamber 36.To switch the top outlet 36a that discharges cold air in chamber 36 be disposed at upper drawer box 69 above the top of peristome 69a.And, in the above the more top of peristome 70a and and bottom surface sections 69b between be formed with and be opened on the plumbing installation 49 and to switching the bottom outlet 36b that cold air are discharged in chamber 36.

In addition, outlet 36b in bottom makes back face wall 69c tilt and place the opposed position with back face wall 69c to the place ahead of bottom drawer box 70.Thus, back face wall 69c becomes the guide plate of the cold air of discharge, cold air can be imported in the bottom drawer box 70.

In addition, switch chamber return port 36c and be formed between top peristome 70a and the bottom surface sections 70b, can make the cold air in the bottom drawer box 70 return cooler 44.

Below with reference to Fig. 3 the configuration and the wind path of each pipe of the freezer 30 of embodiment of the present invention are done following explanation.Fig. 3 is the skeleton diagram of wind path of the freezer of explanation embodiment of the present invention.In addition, mainly describe below, but describe with reference to Fig. 1 and Fig. 2 as required with reference to Fig. 3.

In Fig. 3, left and right sides transverse row is shown cold air is sent to the refrigerating chamber air supply duct 48a of refrigerating chamber 35 and cold air is sent to the switching chamber air supply duct 48b that switches chamber 36 on the air supply duct 48 in plumbing installation 49, and above-below direction is communicated with.Refrigerating chamber air supply duct 48a is formed in the back side of refrigerating chamber 35, is communicated with on a plurality of 61 rear above-below direction, forms refrigerating chamber outlet 62 accordingly with each frame 61.In addition, in plumbing installation 49, will regulate cold air and be located at refrigerating chamber air supply duct 48a and switch in the pipeline of chamber air supply duct 48b, respectively the air conditioning quantity passed through of control to refrigerating chamber 35 and the windshield device 50 that switches the amount of chamber.

Refrigerating chamber Returning pipe 51a and air supply duct 48 horizontal and row arrangement, thus on plumbing installation 49, refrigerating chamber air supply duct 48a, these three pipelines of switching chamber air supply duct 48b, refrigerating chamber Returning pipe 51a are communicated with at above-below direction respectively, and horizontal and row arrangement.It is adjacent with refrigerating chamber Returning pipe 51a to switch chamber Returning pipe 51b, with the relation configuration of position, front and back, switches more the place ahead that chamber Returning pipe 51b is disposed at refrigerating chamber Returning pipe 51a with respect to the door direction.

In addition, preferred pipeline device 49 forms at the back side of switching chamber 36 and the area at the back side size with degree.Near refrigerating chamber air supply duct 48a and switch chamber air supply duct 48b and be disposed at the central authorities of width that the left and right sides width that switches chamber 36 is a plumbing installation 49.Refrigerating chamber Returning pipe 51a and switch chamber Returning pipe 51b and be located at refrigerating chamber air supply duct 48a and switch plumbing installation 49 one-sided that chamber air supply duct 48b is the center.

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

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

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

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 the freezer in the embodiment of the present invention.

In Fig. 4, at plumbing installation 49 independent and row laterally dispose side by side to refrigerating chamber 35 send the refrigerating chamber air supply duct 48a of cold air, to the refrigerating chamber Returning pipe 51a that switches the switching chamber air supply duct 48b that send cold air in chamber 36, the cold air from refrigerating chamber 35 is returned.

According to above-mentioned formation, need a plurality of outlets be set at each pipeline, be not created in the wind path resistance in each pipeline yet, therefore, can be indirectly and use cooler 44 cold storages indoor effectively.In addition, owing to do not produce the wind path resistance, thereby do not need to increase the sectional area of wind path, in addition, owing to laterally be configured to row side by side, thereby can increase the depth size of switching chamber 36.

The freezer 30 of the internal volume of guaranteeing to have plumbing installation 49 as above, can be provided.

In addition, be provided with the recess 56 that is used to take in feedwater pipe arrangement 55 on the right side of the front of plumbing installation 49.The wall of the pipe in the refrigerating chamber Returning pipe 51a that the bottom, left side of the front of plumbing installation 49 is constituted is provided with aluminium foil heater 57.Aluminium foil heater 57 is made as the temperature that temperature is lower than under the situation of cryogenic temperature band etc. of refrigerated storage temperature band or is controlled to be regulation when the temperature degree is low outside to 57 energisings of aluminium foil heater will switching chamber 36.In addition, at the cold air height that switches chamber Returning pipe 51b by the temperature that contains wetly cold air after refrigerating chamber 35 circulations of refrigerating chamber Returning pipe 51a than importing.Therefore, be cooled in the refrigerating chamber Returning pipe 51a, may make containing wetly cold air dewfall or freeze after refrigerating chamber circulation.Therefore, aluminium foil heater 57 is switched on to prevent freezing in the refrigerating chamber Returning pipe 51a.

Fig. 5 is first exploded view of the plumbing installation of the freezer in the embodiment of the present invention.Fig. 5 is the figure that the plumbing installation of freezer has been carried out decomposition, and the left side of accompanying drawing is the front for reveal, and the right side of accompanying drawing is that the opposition side of reveal is the back side.

Among Fig. 5, plumbing installation 49 front by the upper pipe parts 49 that form by foamed styrene and lower pipeline parts 49b and covering upper pipe parts 49a and lower pipeline parts 49b resinous pipeline decorating board 49c form.The face of going up of the lower face of upper pipe parts 49a and lower pipeline parts 49b is connected at above-below direction.With the joint face sealing of upper pipe parts 49a and lower pipeline parts 49b, the front is covered by pipeline decorating board 49c.Refrigerating chamber air supply duct 48a for example shown in Figure 4 in the through tube duct device 49 and switching chamber air supply duct 48b constitute the pipeline wall by upper pipe parts 49a is connected with lower pipeline parts 49b.

Windshield device 50 as following with reference to being wrapped in the lower pipeline parts 49b in the illustrated quilt of Fig. 6.

Fig. 6 is second exploded view of plumbing installation of the freezer of embodiment of the present invention.Fig. 6 is the figure that the plumbing installation of freezer has been carried out decomposition, and the front side of accompanying drawing is that the opposition side of reveal is the back side, and the rear side of accompanying drawing is that reveal is the front.

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

The 49d of the portion that is tightly connected of lower pipeline parts 49b for the joint face of the upper pipe parts 49a of plumbing installation 49.And, be tightly connected the 49d of portion on bottom drawer box 70 for example shown in Figure 1 peristome 70a more below be positioned at bottom surface sections 70b more above, and be located at the position corresponding with the back face wall 70c of bottom drawer box 70.

Fig. 7 is the 3rd exploded view of plumbing installation of the freezer of embodiment of the present invention.Fig. 7 is the figure that the plumbing installation of freezer has been carried out decomposition, and the left side of accompanying drawing is that the opposition side of reveal is the back side, and the right side of accompanying drawing is that reveal is the front.

Among Fig. 7, at refrigerating chamber air supply duct 48a, switch the linking part between the parts of chamber air supply duct 48b, refrigerating chamber Returning pipe 51a and the first zoning wall 41 and the second zoning wall 42, the seal member 79 of the periphery by each pipeline tapping portion seals.Prevent that thus the linking part between parts from producing the gap.

In addition, in the present embodiment, the seal member 79 of length that will have the peripheral degree of each peristome is installed along pipeline tapping, but the incorporate seal member after the perforate also can be installed and offer the hole in the position of each pipeline tapping portion.In addition, the sealing surface that seal member 79 preferably is installed does not have step at installed surface.Thus, seal member can seamlessly be installed, thereby can prevent cooling gas leakage.

In addition, at the opposition side of the refrigerating chamber Returning pipe 51a of lower pipeline parts 49b, purchase distribution incorporating section 52 for example shown in Figure 7 and recess 56 in the mode that is fore-and-aft direction with respect to reveal.

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

For example, will switch under the situation that chamber 36 is set at the cryogenic temperature band, the water in the feedwater pipe arrangement 55 might freeze.Therefore, freeze preventing with heater in the periphery of the feedwater pipe arrangement 55 not shown anti-freeze of reeling.In addition, in feedwater pipe arrangement 55 is disposed between case 33 and the plumbing installation 49, forms the recess 56 of the inside that is embedded in plumbing installation 49 and carry out heat insulation.At this moment, also distribution incorporating section 52 can be set, take in the distribution and the connector of windshield device 50 in the inside of plumbing installation 49.

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

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

Among Fig. 8, distribution incorporating section 52 is made of the stage portion 74 that is formed between upper pipe parts 49a or lower pipeline parts 49b and the pipeline decorating board 49c.Distribution incorporating section 52 is communicated with via the 49d of the portion that is tightly connected of upper pipe parts 49a and lower pipeline parts 49b.Distribution incorporating section 52 is among the place ahead of the recess 56 of taking in feedwater pipe arrangement 55 is formed at upper pipe parts 49a and lower pipeline parts 49b.The peripheral part of upper pipe parts 49a and lower pipeline parts 49b has with the sectional area towards the be tightly connected 49d of portion upper pipe parts 49a and lower pipeline parts 49b on conduit component and becomes the structure that big mode tilts.Particularly, the side surface part of upper pipe parts 49a forms from the gradient shape (circular cone) of last face orientation lower face by expansion gradually.In addition, the side surface part of lower pipeline parts 49 forms towards the gradient shape (circular cone) of last face by expansion gradually from lower face.Therefore, because the sealing area of the 49d of portion that is tightly connected becomes big, thereby can further improve the sealing of the 49d of portion that is tightly connected, and further reduce the leakage of cold air to the outside.

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

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

Fig. 9 is the stereogram of 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 in the embodiment of the present invention.

In Fig. 9 and Figure 10, the wind path that upper pipe parts 49a that plumbing installation 49 is for example formed by foamed styrene and lower pipeline parts 49b constitute cold air.As mentioned above, connect refrigerating chamber air supply duct 48a in the upper pipe parts 49a, switch chamber air supply duct 48b, each pipeline of refrigerating chamber Returning pipe 51a is to prevent the mixed flow of cold air and by the wall blocking, and be provided with independently.

In Fig. 9, be formed with three protuberances 78 as an example on the surface of upper pipe parts 49a.Protuberance 78 is used for local extruding upper pipe parts 49a in model is shaped makes it outstanding from model, 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, be protuberance 78, protuberance 78a, protuberance 78b by form a plurality of protuberances 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 the forming accuracy of the wall of the cold air that improves the blocking pipeline enclosure when pipeline enclosure is provided with protuberance 78a, protuberance 78b, recess also results from pipeline enclosure.Illustrated as above-mentioned Fig. 7, under the situation of periphery by seal member 79 sealings of the pipeline tapping portion separately of the linking part between the parts of refrigerating chamber air supply duct 48a, the first zoning wall 41 that switches chamber air supply duct 48b and refrigerating chamber Returning pipe 51a and the second zoning wall 42, seal member 79 is installed.Therefore, utilize the recess disjunction sealing surface of protuberance 78a, protuberance 78b, need prevent between seal member 79 and pipeline tapping portion, to produce the gap.Therefore, preferred protuberance 78a, protuberance 78b guarantee planar portions more than the 3mm with respect to pipeline tapping portion.Thus, owing to guarantee forming accuracy and sealing, thereby can improve reliability.

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

In Figure 10, owing to lower pipeline parts 49b is difficult to avoid sealing a plurality of protuberances 78 are set, thereby protuberance 78c setting in addition in switching chamber Returning pipe 51b, protuberance 78d is other the setting in refrigerating chamber switches interflow, chamber air supply duct 48.Thus, can be suppressed at sealing surface and produce step, can prevent to hinder simultaneously the wind path path of pipe.

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

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

In Figure 11, the first zoning wall 41 that is connected with the lower face of plumbing installation possess the refrigerating chamber that is communicated with refrigerating chamber Returning pipe 51a return connected entrance 58 and with switch the switching chamber that chamber Returning pipe 51b is communicated with and return connected entrance 59.At reveal is that front side configuration is switched the chamber and returned connected entrance 59, is that rear side configuration refrigerating chamber returns connected entrance 58 at the opposition side of reveal, and both have peristome, are communicated with cooling chamber 43.

The first zoning wall 41 constitutes by the first zoning wall 41a, the first top top zoning lid 41b that covers the first zoning wall 41a that is formed by foamed styrene, the first following following zoning lid 41c that covers the first zoning wall 41a.And, on first, be filled with polyurethane between the zoning lid 41c below the zoning lid 41b and first, simultaneously, the first zoning wall 41 is fixed in heat insulating box 31.The first zoning wall 41 is used for first zoning wall 41 fixing with filling in the polyurethane of heat insulating box 31 in the position that the polyurethane filling was assembled in regulation before heat insulating box 31, improves 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 form.And, possess at the back side of decorative panel 45a and to be communicated with to refrigerating chamber 35 hermetically with the first zoning wall 41 and to switch the cold gas exhausting outlet 72 that cold air are carried in chamber 36, and return cold air and switch the chamber with refrigerating chamber and return the shunt conduit 76 that mode that cold air do not collaborate is shunted.

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

Figure 12 be the freezer in the embodiment of the present invention first lid 45 want portion's stereogram.

Among Figure 12, first lid 45 for example and be located at the place ahead of cooler shown in Figure 1 44, cold air return path 71 is separated by the back face wall of cooler 44, separating means 75, cooling chamber 43 and forms.First lid 45 possesses: fan 46, to refrigerating chamber 35 with switch the cold gas exhausting outlet 72 that cold air are carried in chamber 36.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 that imports by the first zoning wall 41 to cold air return path 71 returns connected entrance 58 and switches the cold air that connected entrance 59 is returned in the chamber.Be formed with at the upstream side of cold air return path 71 and be communicated with 41 sealings of the first zoning wall and return cold air and switching chamber with refrigerating chamber and return the shunt conduit 76 that mode that cold air do not collaborate is shunted.

In the present embodiment, so that switch the chamber and return mode that cold air and refrigerating chamber return the cold air shunting and be formed with the switching chamber and return the shunt conduit 76 that connected entrance 59 is connected.Particularly, following formation only forms shunt conduit 76 at upstream side, returns cold air (arrow D) interflow from making refrigerating chamber return cold air (arrow B) and switching the chamber midway.

This is based on following reason.When the cold air (arrow B) that has passed through to switch the cold air (arrow D) of chamber Returning pipe 51b and passed through refrigerating chamber Returning pipe 51a during, return connected entrance 58 and switch the chamber via the refrigerating chamber of the first zoning wall 41 and return connected entrance 59 and make the cold air adverse current by cold air return path 71 interflow.And temperature is returned the high refrigerating chamber of cold air (arrow D) and is returned cold air (arrow B) and return connected entrance 59 and rise by switching the chamber than switching the chamber, from switching chamber return port 36c to switching chamber 36 adverse currents.Consequently, can not be cooled to suitable temperature with switching chamber 36 effectively, dewfall etc. also takes place in addition.

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

In addition, shunt conduit 76 only forms in upstream portion for the opening section of guaranteeing cold air return path 71 is long-pending, still, if can guarantee the opening section in the downstream of cold air return path 71 amasss, then also can prolong and be formed up to the downstream part, thus, can improve anti-adverse current effect.

In addition, in the bottom of the bottom of separating means 75 75a the cold air return port 77 that turns back to the bottom of cooler 44 by the cold air of cold air return path 71 is set, at bottom 75a opening.

Below, first lid 45 of above-mentioned explanation and near the formation the cooling chamber 43 are described.

Figure 13 wants portion's key diagram near the cooling chamber 43 of freezer of embodiment of the present invention.

Among Figure 13, be provided with the cold air return port 77 that turns 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 expose from an end of cooler 44 end of Defrost heater 47 that is disposed to approximate horizontal the bottom of cooler 44, and dispose by extending to cold air return path 71 in the cold air return port 77.

Thus, prevent the Quilt with air conditioning cooler 44 that has moisture, refrigerating chamber in the cold air return path 71 cold the cold air cooling and in cold air return path 71, freeze.

Below to as above action, the effect of the freezer 30 of formation describe.

For example the part of the cold air that is generated by the cooler 44 of cooling chamber shown in Figure 1 43 is sent to the place ahead forcibly by fan 46, and refrigerating chamber 37 is by the cold air cooling of discharging from the outlet of first lid 45.The return port that cold air is offered via the bottom of first lid 45 is directed to the bottom of cooler 44, carries out heat exchange at cooler 44, circulates by fan 46 again.Thus, refrigerating chamber 37 is controlled in suitable temperature by the control of refrigerating chamber sensor (not shown).

In addition, be discharged to the cold air of top of fan 46 from the intercommunicating pore import pipe device 49 of first lid, 45 cold gas exhausting outlet 72 through the first zoning wall 41.And, be design temperature when above utilizing refrigerator temperature sensor 67 to be judged as indoor temperature, 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 cools off (arrow A of Fig. 3).And the cold air that refrigerating chamber 35 has been carried out cooling becomes air in the refrigerating chamber 35, is contained in the air that has moisture of repertory, is directed to return port 35b (arrow B of Fig. 3).Thereafter, refrigerating chamber Returning pipe 51a and the cold air return path 71 that by back face wall by first lid 45 and cooling chamber 43 constitute and from cold air return port 77 import to the bottom of cooler 44 of cold air by plumbing installation 49.And, by carrying out heat exchange, utilize fan 46 with cold air forced air supply once more with cooler 44.

In addition, by utilize fan 46 with the cold air forced air supply to the refrigerating chamber air supply duct 48a that is communicated with cooler 44, thereby even be disposed at and leave cooler 44 and dispose, also can cool off refrigerating chamber 35 at an easy rate.That is, cold air is discharged to refrigerating chamber 35, utilizes the switching of refrigerator temperature sensor 67 control refrigerating chamber windscreen 50a, the indoor design temperature that is controlled at by the refrigerating chamber air supply duct 48a in the plumbing installation 49.

In addition, utilize to switch room temperature sensor 68 be judged as indoor temperature for the situation more than the design temperature under, the switching chamber windscreen 50b of open windshield device 50 discharges to the cold air that switches chamber 36 and discharges from the top outlet 36a that switches chamber 36 by switching chamber air-supply passage 48b.

In top drawer box 69, import cold air, discharge cold air (arrow C Fig. 3) from bottom outlet 36b in addition, the back face wall 69c of upper drawer box 69 is played a role as the guide that flows that limits cold air, in bottom drawer box 70, import cold air.

In addition, the Quilt with air conditioning of circulation imports and switches chamber return port 36c in switching chamber 36, by switching chamber Returning pipe 51b and returning connected entrance 59 (the arrow D of Fig. 3) by switching the chamber.And, import the bottom of coolers 44 by being formed at first lid, 45 shunt conduit 76 from cold air return port 77, carry out heat exchange with cooler 44, the cold air that will carry out heat exchange carries out forced air supply by fan 46 once more.

Thus, be positioned at the position of leaving cooler 44, also can utilize fan 46 that the cold air forced conveyance is arrived the switching chamber air supply duct 48b that is communicated with cooler 44, by discharging cold air to switching chamber 36 in the plumbing installation 49 even switch chamber 35.In addition, switch the switching that chamber windscreen 50b is switched in 68 controls of room temperature sensor, thereby can will switch chamber 36 inner control at design temperature owing to utilize.

As mentioned above, the present invention is communicated with refrigerating chamber air supply duct 48a at above-below direction independently, switches chamber air supply duct 48b, refrigerating chamber Returning pipe 51a in plumbing installation 49, simultaneously their left and right sides landscape configuration are become row, in addition, be the place ahead with switching the reveal that chamber Returning pipe 51b is formed at refrigerating chamber Returning pipe 51a.

In addition, refrigerating chamber air supply duct 48a is set near the central authorities of the width of plumbing installation 49 and switches chamber air supply duct 48b, a side with respect to heat insulating box 31 along fore-and-aft direction configuration refrigerating chamber Returning pipe 51a and switching chamber Returning pipe 51b.And, dispose feedwater pipe arrangement 55 and the distribution incorporating section 52 that is connected with feed trough 53 the opposing party.Thus, can reduce to become the distance of 33 in the plumbing installation 49 of the wasted space of switching 36 rears, chamber and interior case, thereby can significantly guarantee to switch the depth size of chamber 36.

In addition,, can therefore, can reduce the interior wind path resistance of pipeline, and can guarantee sufficient air quantity from the branch branch road 63 to the refrigerating chamber 35 in the plumbing installation 49 that switches chamber 36 at refrigerating chamber air supply duct 48a at vertical direction formation pipeline roughly to refrigerating chamber 35.This is because the cause of the setting of pipeline not being wriggled.

In addition, in the present invention, the filling foamed heat-insulating materials 34 such as ammonia ester that for example foam, and the first zoning wall 41 and the second zoning wall 42 are formed on the 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, it is simple that the pipeline that switches chamber 36 is constituted.

In addition, in the present invention, switch chamber 36 and switch the aperture rate of chamber windscreen 50b by control, refrigerated storage temperature band that can be-18 ℃ cryogenic temperature band～4 ℃ switches design temperature.

Particularly, be set under the situation of the temperature band lower than refrigerated storage temperature at the design temperature that switches chamber 36, the cold air that will discharge from top outlet 36a, the bottom outlet 36b that switches chamber 36 imports by switching chamber return port 36c and switches in the backward channel 51b of chamber.At this moment, the cold air by refrigerating chamber Returning pipe 51a is than by switching the cold air temperature height of chamber Returning pipe 51b, therefore, and may be in the pipe surface generation dewfall of refrigerating chamber Returning pipe 51a.Particularly under the low situation of atmospheric temperature, the moisture freezes of dewfall or dew also may occur and flow in the refrigerating chamber Returning pipe 51a and and freeze at cold air return path 71.Therefore, the aluminium foil heater 57 of refrigerating chamber Returning pipe 51a is located in running, even dew produces, also can prevent freezing in the pipeline by evaporation.

In addition, in the present invention, the shunt conduit 76 of being located at the upstream portion of cold air return path 71 does not flow the cold air by refrigerating chamber Returning pipe 51a downwards, but return connected entrance 59 adverse currents to switching chamber 59, prevent switching chamber return port 36c adverse current in switching chamber 36 from plumbing installation 49.That is, shunt conduit 76 plays a role as anti-reverse stream 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 the chamber.Thus, can be cooled to suitable temperature effectively, can prevent dewfall etc. simultaneously switching chamber 36.

In addition, the present invention makes Defrost heater 47 expose the end from cooler 44 on the perspective plane, disposes by extending in the cold air return port 77 in the cold air return path 71.Therefore, in when defrosting, available heater heat is to heating in the cold air return path 71, and prevent dewfall and freeze, simultaneously, the reliability in the time of can improving action.

In addition, in the present invention, refrigerating chamber Returning pipe 51a and switch the below that zone that chamber Returning pipe 51b is lower than the refrigerating chamber 37 that switches chamber 36 and refrigerating chamber 35 by the temperature band is communicated in cooler 44 and be provided with.Thus, the refrigerating chamber Returning pipe 51a that the temperature of returning cold air is higher than the temperature band of refrigerating chamber 37 is disposed at the position of leaving refrigerating chamber 37.Its result can reduce refrigerating chamber Returning pipe 51a internal cause cold and the dewfall that produces and the possibility of freezing in the refrigerating chamber Returning pipe 51a.

Promptly, by can be, can reduce the dewfall in the refrigerating chamber Returning pipe 51a and freeze from being set to the place ahead that is disposed at refrigerating chamber Returning pipe 51a with the switching chamber Returning pipe 51b of the switching chamber 36 of the approaching temperature of temperature of refrigerating chamber with the approaching temperature of the temperature of refrigerating chamber 37.

Claims

1. freezer is characterized in that:

Possess:

The refrigerating chamber on top and the refrigerating chamber of bottom;

Be located between described refrigerating chamber and the described refrigerating chamber switching chamber that can switch the temperature band;

At the rear of described refrigerating chamber, generate the cooler that is used for the cold air in the cold room;

Be disposed at the top of described cooler and with the cold air forced air supply that generated fan to each storeroom; With

Plumbing installation, it constitutes at rear of described switching chamber described cold air to the air supply duct of described refrigerating chamber and the air-supply of described switching chamber with make the described cold air that is discharged in the described refrigerating chamber turn back to the refrigerating chamber Returning pipe of described cooler, wherein,

Described air supply duct independently forms cold air to the refrigerating chamber air supply duct of described refrigerating chamber air-supply with the switching chamber air supply duct of cold air to the air-supply of described switching chamber, and described plumbing installation laterally has been arranged side by side described refrigerating chamber air supply duct, described switching chamber air supply duct and described refrigerating chamber Returning pipe.

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

3. freezer according to claim 1 wherein, is regulated to the windshield device of the air conditioning quantity of refrigerating chamber and is located in described upper pipe parts or the described conduit component.

4. freezer as claimed in claim 1, wherein, the return port that is communicated with the switching chamber Returning pipe that makes air-supply to the cold air of described switching chamber turn back to described cooler is disposed at the bottom of described plumbing installation.

5. freezer as claimed in claim 1 wherein, has the heater of bringing the electricity that works according to the temperature of the described switching chamber of setting into, and described heater is arranged in the refrigerating chamber Returning pipe of described plumbing installation.

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

7. freezer as claimed in claim 2, wherein, described plumbing installation possesses the recess and the distribution incorporating section that is used to take in the electric wiring part that is connected with described windshield device that is used to be provided with the feedwater pipe arrangement, and described distribution incorporating section is shaped by heat-barrier material.

8. freezer as claimed in claim 1, wherein, described plumbing installation between described refrigerating chamber air supply duct and the described switching chamber air supply duct or at least one side between described switching chamber air supply duct and the described refrigerating chamber Returning pipe be provided with protuberance.

9. freezer as claimed in claim 4, wherein, described plumbing installation in the Returning pipe of described switching chamber, in the described refrigerating chamber air supply duct or at least one side in the air supply duct of described switching chamber be provided with protuberance.

10. freezer as claimed in claim 4, wherein, described refrigerating chamber Returning pipe and described switching chamber Returning pipe independently constitute in the front and back of described plumbing installation, dispose described switching chamber Returning pipe forwardly, dispose described refrigerating chamber Returning pipe in the wings.

11. freezer as claimed in claim 10, wherein, possesses the first zoning wall with zoning about described switching chamber and the described refrigerating chamber, when the described first zoning wall connects described plumbing installation, the switching chamber that to return connected entrance with the refrigerating chamber that described refrigerating chamber Returning pipe is communicated with and be communicated with described switching chamber Returning pipe is returned connected entrance and is disposed at the described first zoning wall at fore-and-aft direction, and described refrigerating chamber returns connected entrance and described switching chamber and returns connected entrance and have peristome.

12. freezer as claimed in claim 11, wherein, possesses first lid that covers described cooler and described refrigerating chamber and described cooler are separated, described first lid is communicated with the first zoning wall, possess and will return the return path that cold air imports the bottom of described cooler that returns that connected entrance is returned in connected entrance and described switching chamber by described refrigerating chamber, described return path forms at least in the shunt conduit of returning cold air shunting of returning cold air and described switching chamber of upstream side with described refrigerating chamber.

13. freezer as claimed in claim 12, wherein, possess: will be attached to the described cooler of the below that is located at described cooler frost and Defrost heater that ice is removed, cover described cooler and described Defrost heater described first lid, be formed at the cold air return path that the described first described cooler that covers is communicated with, described Defrost heater disposes in the mode of extending in described cold air return path at least.