CN1384323A

CN1384323A - Refrigerator

Info

Publication number: CN1384323A
Application number: CN02107562A
Authority: CN
Inventors: 关根洋治; 村上博; 落合英夫; 高桥英一; 久保田刚; 岩田博
Original assignee: Hitachi Ltd
Current assignee: Hitachi Ltd
Priority date: 2001-05-09
Filing date: 2002-03-15
Publication date: 2002-12-11
Anticipated expiration: 2022-03-15
Also published as: KR100481896B1; KR20020085786A; CN1239872C

Abstract

A cross fin type of heat exchanger, where many plate-shaped fins 18b are juxtaposed on a refrigerant pipe 18a made in zigzag, is used as a condenser 18 in the machine room, and a blower 17 in the machine room is constituted of a propeller-type blower which is projected toward the side of the condenser 18 in a machine room from a mouth ring 41, and the periphery of a passage leading to the blower 17 in the machine room from the condenser 18 in the machine room is shut off to make a half-sealed space which opens at the section of the blower 17 in the machine room and the section of the blower 17 in the machine room, and it is arranged so that the face having wire area of the condenser 18 in the machine room may face the half-sealed space to secure the operation performance of a refrigerator by enhancing the performance of a condenser in a machine room thereby contriving the power saving, and suppressing the drop of the performance of the condenser in a machine room even if the suction side of the condenser in the machine room is clogged.

Description

Refrigerator

Technical field

The present invention relates to a kind of refrigerator, particularly relate to a kind of domestic refrigerator that has the condenser of forced-draft type in the Machine Room.

Background technology

Below, with reference to Fig. 9-Figure 11 medium-sized and large-scale domestic refrigerator (prior art 1) is described.

This domestic refrigerator by refrigerator body 1, refrigerator doors, and freeze cycle etc. constitute.This refrigerator body 1 by the outer container of steel plate system, plastic in case, and the heat-insulating material of filling foaming urethanes system therebetween constitute, form a plurality of storerooms.In addition, refrigerator doors can be provided with apotheca with opening and closing.

This freeze cycle as shown in Figure 11, by making refrigerant boost with the compressor 16 that circulates, as the

condenser

18,19, anti-condensation radiating tube 20 of the heat exchanger of heat radiation outside refrigerator, as the evaporimeter 12 of the heat exchanger that the storeroom that is arranged in the refrigerator is cooled off, and its capillary that links to each other 21 etc. be constituted.

This

condenser

18,19 constitutes with the form of also using mechanical chamber condenser 18 and casing condenser 19, this mechanical chamber condenser 18 is arranged on the Machine Room 22 of refrigerator body 1 lower backside shown in Figure 9 and is ventilated forcibly by Machine Room pressure fan 17, and this casing condenser 19 is as near imbed the refrigerant pipe outer surface of condenser employing in the adiabatic wall of refrigerator body 1 of free convection formula with the outer container of steel plate system contiguously form.

The mechanical chamber condenser 18 of forced ventilation formula needs the power of wind path formation and pressure fan etc., but can prevent that heat from invading in the refrigerator, and simultaneously, easy separation condenser 18 when handling refrigerator in addition, has the advantage that can be saved refrigerator electric power by high performance.On the other hand, casing condenser 19 has simple structure and does not need the feature of the power of pressure fan etc., causes performance to descend in the refrigerator and is difficult to from the shortcoming of adiabatic wall separator box condenser body 19 when handling refrigerator but have because of heat invades from casing condenser 19.

As the mechanical chamber condenser 18 of this forced ventilation formula, the helical fin formula condenser that has used the refrigerant pipe 18a with the banded fin of screw winding shown in Figure 10 to crawl and bend to stereo structure.This helical fin formula condenser is arranged on the Machine Room 22 of the lower backside of refrigerator body 1 as shown in Figure 9, is ventilated by the pressure fan 17 that is arranged at Machine Room 22, by this cooled suction air 28 that produces that ventilates it is forced cooling.Technology as relevant with the prior art 1 is recorded in Japanese kokai publication hei 7-318222 communique.

On the other hand, Japan is real to open in the refrigeration display window (prior art 2) of clear 58-119178 communique being recorded in, have all refrigeration display window casings that forms bigger Machine Room of bottom surface sections, be disposed at rear portion in the Machine Room compressor, be disposed at intersection Fin-tube Condenser anterior in the Machine Room, be disposed at and intersect filter, and 2 the Machine Room pressure fans forcibly compressor and condenser being ventilated of suction portion of Fin-tube Condenser.In addition, the Machine Room bight of bottom in front forms the air suction inlet of inclination, and air outlet is formed at the bottom overleaf.The Fin-tube Condenser of intersecting is made of the intersection fin tube type heat exchanger that is arranged side by side a plurality of fins at 2 row refrigerant pipes across, simultaneously, the refrigerant pipe towards about extend, its crooked position becomes flat condition than the highland tilted configuration forwardly in the left and right sides.The Machine Room pressure fan does not have guide ring at the circular hole that is formed at the fan tube sheet.

Yet, in prior art 1, though the space that is provided with that has corresponding to Machine Room 22 forms advantage at the free shape of longitudinal and transverse, depth direction with helical fin formula condenser, but for relative 1 helical fin prevents the grating that produces that contacts with the fin of direction up and down, need between at different levels and each row, bigger gap be set, simultaneously, need and constitute between the wall of Machine Room big gap be set, for this reason, the heat transfer area of the unit possessive volume of helical fin formula condenser is low.Like this, be difficult to guarantee fully that by the helical fin formula condenser that is arranged in the Machine Room 22 that constitutes by small space heat dissipation capacity to realize high performance, is difficult to realize the economize on electricityization of refrigerator.

On the other hand, prior art 2 relates in bottom surface sections and all forms bigger Machine Room, has suction inlet in its front and have the refrigeration display case of outlet overleaf, and the refrigerator that forms the Machine Room with the bight of bottom overleaf is different fully.Promptly, in prior art 2, intersection wing formula condenser is tilted, increase and suck area, reduce the cleaning number of times that dust stops up the filter that causes, but in the technology in the bight that as refrigerator, the Machine Room is arranged at lower backside, as filter is arranged at the Machine Room, then in that to be difficult to take out situation about being provided with under the state of filter more, its cleaning difficulty is present present situation.In addition, in prior art 2, the performance that improves mechanical chamber condenser about the occasion narrow and small like that in the Machine Room in the bight that is formed at the refrigerator body lower backside with the technology of saving electric power, at lower cost or good assembleability with its technology that is realized, and the width of corresponding refrigerator body to change the technology etc. of the volume change of bringing not on the books.

Summary of the invention

The object of the present invention is to provide a kind of refrigerator, this refrigerator can improve the performance of mechanical chamber condenser to save electric power, simultaneously, even also can suppress the mechanical chamber condenser performance decrease, guarantee the runnability of refrigerator because of cotton dirt etc. adheres to the suction side of mechanical chamber condenser stopped up.

Thereby another object of the present invention is to provide a kind of refrigerator that can save electric power by the performance that constituting of lower cost improves mechanical chamber condenser.

The performance that another object of the present invention is to provide the assembleability of the component parts in a kind of Machine Room good, can improve mechanical chamber condenser is to save the refrigerator of electric power.

The performance that another object of the present invention is to provide a kind of volume change of can be easily corresponding being brought by the wide variety of refrigerator body and can improve mechanical chamber condenser is to save the refrigerator of electric power.

In order to achieve the above object, in typical example of the present invention, have refrigerator body, freeze cycle, reach the Machine Room pressure fan, this refrigerator body bight of bottom overleaf forms the Machine Room, this freeze cycle is connected compressor, mechanical chamber condenser, is reached evaporimeter by the refrigerant pipe, and this Machine Room pressure fan ventilates forcibly to above-mentioned compressor and above-mentioned mechanical chamber condenser; Above-mentioned Machine Room all forms towards transverse extension ground along the transverse width of above-mentioned refrigerator body, in its left and right directions one side above-mentioned compressor is set, at its left and right directions opposite side above-mentioned mechanical chamber condenser is set, above-mentioned mechanical chamber condenser is made of the intersection fin tube type heat exchanger that a plurality of plate-shaped fins are set at the refrigerant tube side-by-side that forms the shape that crawls, above-mentioned Machine Room pressure fan constitutes by protrude into the propeller type pressure fan that above-mentioned mechanical chamber condenser side is configured from the guide ring of being located at demarcation strip, this demarcation strip is separated the ventilation road from above-mentioned mechanical chamber condenser to above-mentioned compressor, the semi-hermetic space of the fin gap that is formed on above-mentioned mechanical chamber condenser on every side on the ventilation road of sealing from above-mentioned mechanical chamber condenser to above-mentioned Machine Room pressure fan and the gap location opening of above-mentioned Machine Room pressure fan, above-mentioned mechanical chamber condenser is to have disposing facing to ground, above-mentioned semi-hermetic space of broad area.

Description of drawings

Fig. 1 is the skiagraph of the refrigerator of the present invention the 1st embodiment.

Fig. 2 is the front elevation of the refrigerator of Fig. 1.

Fig. 3 is the refrigeration cycle diagram of the refrigerator of Fig. 1.

Fig. 4 is the back view of Machine Room portion that the refrigerator of Fig. 1 is shown.

Fig. 5 is the back perspective view of this Machine Room portion.

Fig. 6 is the perspective view of free state that is disposed at the mechanical chamber condenser of this Machine Room portion.

Fig. 7 is the back view that is installed on the Machine Room cover of this Machine Room portion.

Fig. 8 is the back view of Machine Room portion that the refrigerator of the present invention the 2nd embodiment is shown.

Fig. 9 is the back view that the Machine Room portion of current refrigerator is shown.

Figure 10 is the perspective view that the part of the mechanical chamber condenser that is used for this refrigerator is shown.

Figure 11 is the refrigeration cycle diagram of this refrigerator.

Figure 12 is the back side sectional schematic diagram that the refrigerator mechanical chamber portion of another embodiment of the present invention is shown.

Figure 13 be this refrigerator mechanical chamber is shown want portion's perspective view.

Figure 14 is the major part perspective view of the Machine Room of the refrigerator of the present invention the 2nd embodiment.

Figure 15 is the major part perspective view of the Machine Room of the refrigerator of the present invention the 3rd embodiment.

Figure 16 is the major part perspective view of the Machine Room of the refrigerator of the present invention the 4th embodiment.

The specific embodiment

Each embodiment of refrigerator of the present invention is described with reference to the accompanying drawings.Prosign among the figure of each embodiment and conventional example illustrates same object or suitable object.

All formations of the refrigerator of the 1st embodiment of the present invention are described below with reference to Fig. 1-Fig. 3.Fig. 1 is the skiagraph of the refrigerator of the present invention the 1st embodiment, and Fig. 2 is the front elevation of the refrigerator of Fig. 1, and Fig. 3 is the refrigeration cycle diagram of the refrigerator of Fig. 1.

As depicted in figs. 1 and 2, refrigerator body 1 by the outer container 1a of steel plate system, plastic in case 1b, and the heat-insulating material 1c of filling foaming urethanes system therebetween constitute, independently from top to bottom form refrigerating chamber 2, vegetable compartment 3, switch chamber 4, ice-making compartment 5, refrigerating chamber 6.Has a 7-11 at each storeroom 2-6.These refrigerating chambers 2, vegetable compartment 3, switching chamber 4, ice-making compartment 5, refrigerating chamber 6 have the function as each common general storeroom, detailed.

Bight in the lower backside of refrigerator body 1 forms Machine Room 22, this Machine Room 22 in configuration compressor 16, container for evaporation 23, Machine Room pressure fan 17 (with reference to Fig. 4), reach mechanical chamber condenser 18 (with reference to Fig. 4) etc.This Machine Room 22 forms upper wall portion, front side wall portion, and the both sides portion that faces the wall and meditates at refrigerator body 1, forms underside wall portion by mounting plate 25, covers 24 by the Machine Room and forms back face wall portion.In addition, Machine Room 22 all forms towards transverse extension ground along the transverse width of refrigerator body 1, and the space that is closed by other parts except that the ventilating opening that comprises suction inlet and outlet constitutes.This Machine Room cover 24 is installed on refrigerator body 1 dismantledly by screw etc.In addition, mounting plate 25 by screw etc. be fixed in outer container 1a below.At this mounting plate 25 leg 26 is installed, thereby between mounting plate 25 and floor 27, forms the space.

Refrigerating chamber side evaporimeter 12 is configured in the rear side of vegetable compartment 3.Refrigerating chamber side pressure fan 13 is that the cold air of refrigerating chamber side evaporimeter 12 special uses ventilates and to use pressure fan, be configured in the evaporator room of refrigerating chamber side evaporimeter 12, from refrigerating chamber side evaporimeter 12 with cool-air feed to refrigerating chamber 2 and vegetable compartment 3.Refrigerating chamber side evaporimeter 14 is configured in the rear side of switching chamber 4, ice-making compartment 5, refrigerating chamber 6.Refrigerating chamber side pressure fan 15 is that the cold air of refrigerating chamber side evaporimeter 14 special uses ventilates and use pressure fan, be configured in the ventilation road of refrigerating chamber side evaporimeter 14, from refrigerating chamber side evaporimeter 14 with cool-air feed to switching chamber 4, ice-making compartment 5, refrigerating chamber 6.Each evaporimeter 12,14 is supplied with refrigerant by compressor 16, forms the part of each freeze cycle, cools off operation.The water of discharging from refrigerating chamber side evaporimeter 12 and refrigerating chamber side evaporimeter 14 is directed to the container for evaporation 23 in the Machine Room 22, utilizes the heat that is produced by compressor 16 to evaporate.

As shown in Figure 3, freeze cycle by pipe arrangement by compressor 16, used and intersected mechanical chamber condenser 18, refrigerant pipe flush type casing condenser 19, anti-condensation radiating tube the 20, the 1st capillary 21a and the refrigerating chamber side evaporimeter 12a of fin tube type heat exchanger or the 2nd capillary 21b and refrigerating chamber side evaporimeter 12b, and being linked in sequence of compressor 16, constitute freeze cycle.Capillary 21 is made of the 1st capillary 21a and the 2nd capillary 21b, and evaporimeter 12 is made of the 1st evaporimeter 12a and the 2nd evaporimeter 12b.

This compressor 16 and mechanical chamber condenser 18 are disposed at Machine Room 22, carry out forced ventilation by Machine Room pressure fan 17.Casing condenser 19 is for being contacted with the free convection formula condenser that one of outer container 1a imbeds the form of refrigerant pipe laterally in the adiabatic wall 1c of refrigerator body 1.Anti-condensation radiating tube 20 between peristome outer container 1a and adiabatic wall material 1c, is used to prevent the previous section dewfall at outer container 1a along the former configuration of refrigerator body 1.

Refrigerant is compressed by compressor 16 shown in the arrow of Fig. 3 like that, become high temperature, high pressure, arrive mechanical chamber condenser 18, by mechanical chamber condenser 18 heat radiations, temperature descends, and by 19 heat radiations of casing condenser, heat front by 20 couples of outer container 1a of anti-condensation radiating tube, prevent dewfall, be split into by the 1st capillary 21a decompression back and arrive the liquid stream of refrigerating chamber side evaporimeter 12a and arrive the liquid stream of refrigerating chamber side evaporimeter 12b by the 2nd capillary 21b decompression back, respectively by refrigerating chamber side evaporimeter 12a and refrigerating chamber side evaporimeter 12b evaporation, from around siphon away heat, become low temperature, low-pressure state turns back to compressor 16, below carry out this process repeatedly, thereby cool off operation.

The shunting of refrigerating chamber side evaporimeter 12a and refrigerating chamber side evaporimeter 12b is controlled by the valve (not shown).In addition, Machine Room pressure fan 17 is in the operation in service of this freeze cycle, and forced ventilation makes its heat radiation to compressor 16 and mechanical chamber condenser 18.

In this freeze cycle, increase its heat dissipation capacities by the mechanical chamber condenser 18 that utilizes the intersection fin tube type as described later, thereby the heat in can cutting down from casing condenser 19 to storeroom is significantly invaded, thereby realize the economize on electricityization of refrigerator, simultaneously, refrigerator is easy to can easily carry out the processing of refrigerator from adiabatic wall 1c separator box condenser body 19 when handling.In addition, also can cut down casing condenser 19 by further increasing the heat dissipation capacity of mechanical chamber condenser 18.

Below, the detailed formation of Machine Room 22 is described with reference to Fig. 4-Fig. 7.Fig. 4 is the back view of Machine Room portion that the refrigerator of Fig. 1 is shown, Fig. 5 is the back perspective view of this Machine Room portion, Fig. 6 is the perspective view of free state that is disposed at the mechanical chamber condenser of this Machine Room portion, and Fig. 7 is the back view that is installed on the Machine Room cover of this Machine Room portion.Wherein, Fig. 4 and Fig. 5 illustrate the state of pulling down Machine Room cover 24.

Machine Room 22 is formed by the space of transverse extension and vertically higher cardinal principle rectangular shape, that is, by size up and down than depth dimensions big and transverse width dimension than about the big space of size form.Specifically, the upper angled of front side wall portion, simultaneously, back side central portion protrudes towards the rear slightly.Compressor 16 is disposed at a side of the left and right directions of Machine Room 22, and mechanical chamber condenser 18 is disposed at the opposite side of the left and right directions of Machine Room 22.Machine Room pressure fan 17 is made of the screw pressure fan, be configured in 41 ones of the guide rings of the demarcation strip 40 separated of space of the space of configuration compressor 16 and configuration mechanical chamber condenser 18, specifically, protrude configuration from the guide ring 41 of being located at the demarcation strip 40 that 16 the ventilation road from mechanical chamber condenser 18 to compressor is separated towards half ground that mechanical chamber condenser 18 sides surpass axial dimension.This Machine Room pressure fan 17 has suck air, such function of discharging air as shown in arrow 29 like that shown in the arrow 28 of Fig. 4 and Fig. 5, and compressor 16 and the mechanical chamber condensers 18 that are disposed in the Machine Room 22 are carried out forced ventilation.Ventilation route refrigerator body 1 from this mechanical chamber condenser 18 to Machine Room pressure fan 17, mounting plate 25, Machine Room cover 24, and sealing such as fixture 33-35 around it, the semi-hermetic space of the fin gap of formation mechanical chamber condenser 18 and the clearance opening of Machine Room pressure fan 17, the face with broad area of mechanical chamber condenser 18 and this semi-hermetic space dispose opposite to each other.

The air suction portion that leads to Machine Room 22 as shown in Figure 5, by the bottom surface suction inlet 30 that is formed at mounting plate 25, be formed at refrigerator body 1 casing suction inlet 31, and be formed at the Machine Room as shown in Figure 7 and cover the cover of 24 1 sides and suck 42 and constitute.This bottom surface suction inlet 30 is formed by the opening of a plurality of slit-shaped of mounting plate 25 parts of the horizontal part 18c below that is positioned at mechanical chamber condenser 18 that is formed at Machine Room pressure fan 17 suction sides.In addition, casing suction inlet 31 is formed by the ventilation road in the bight that has cut towards the Machine Room 22 refrigerator body 1, is positioned at the place ahead of the suction side of mechanical chamber condenser 18.In addition, cover sucks 42 openings that cover a plurality of slit-shaped of 24 parts by the Machine Room of the suction side that is formed on the vertical component effect 18d that is positioned at mechanical chamber condenser 18 and forms.

The air discharge portion of Machine Room 22 is made of cover outlet 43 and casing outlet 32, this cover outlet 43 is formed at Machine Room cover 24 as shown in Figure 7, and this casing outlet 32 is formed by the ventilation road that has cut with the bight of Machine Room 22 refrigerator body 1 in opposite directions as shown in Figure 5.This cover outlet 43 is formed by a plurality of slit-shaped openings, and these a plurality of slit-shaped openings are formed on the Machine Room of the discharge side that is positioned at Machine Room pressure fan 17 and cover 24 parts.In addition, casing outlet 32 is formed at the opposition side of casing suction inlet 31 substantially symmetrically.

Mechanical chamber condenser 18 is made of refrigerant pipe 18a, plate-shaped fins 18b,

fixture

33,34 as being illustrated by free state among Fig. 6.This refrigerant pipe 18a is by 1 tubular shape that crawls that becomes of refrigerant, and formed by 1 row.In addition, plate-shaped fins 18b is made of wave-shaped fins, is arranged side by side a plurality ofly by the refrigerant pipe 18a of each row with connecting, constitutes the intersection finned type heat exchanger.In this embodiment, this fin is spaced apart 1.5mm, as fin scope at interval, is preferably in the scope of 1.3mm-1.8mm.In addition,

fixture

33,34 is positioned at the both sides of plate-shaped fins 18b, protrudes into ground, both sides after refrigerant pipe 18a connects and is fixed in refrigerant pipe 18a.The projection of this refrigerant pipe 18a welds after being formed by other all-in-one-piece swan-neck, thereby forms the bend that crawls.

Mechanical chamber condenser 18 is in the direction bending of its intersection of the length direction upper edge of refrigerant pipe 18a, and all shapes form the L word shape that is made of horizontal part 18c and vertical component effect 18d.That is, all shapes of mechanical chamber condenser 18 become towards about, front and back, and the above-below direction three-dimensional shape ground warpage formation of extending.The fixture 33 of one side has joint fastener 33a that protrudes the past subordinate end and the joint fastener 33b that protrudes from rear upper end portion.In addition, opposite side fixture 34 comprises joint fastener 34a with conjugate foramen and the joint fastener 34b with screwed hole.Plate-shaped fins 18b uses wave-shaped fins, so the intensity of mechanical chamber condenser 18 increases, and installs easily etc.

Mechanical chamber condenser 18 is arranged in the Machine Room 22, and its horizontal part 18c and bottom surface suction inlet 30 are horizontal opposite to each other, and its vertical component effect 18d and the outer container 1a that forms Machine Room 22 sidewalls are in vertical position opposite to each other.In other words, the crooked position that crawls of refrigerant pipe 18a is 22 upper and lower in the Machine Room, and simultaneously, the refrigerant pipe 18a that forms the shape that crawls arranges ground along fore-and-aft direction and is provided with.Therefore, the bend that protrudes from fixture 33 of refrigerant pipe 18a is towards the horizontal protrusion as the length direction of Machine Room 22, and the bend that protrudes from fixture 34 protrudes towards the top.Like this, the part from

fixture

33,34 protrusions of refrigerant pipe 18a protrudes into the well-to-do space the Machine Room 22, so the accommodating property of mechanical chamber condenser 18 is good, big mechanical chamber condenser 18 Machine Room 22 can be contained in, the heat dissipation capacity of mechanical chamber condenser 18 can be increased.

In addition, the projection of the end of the horizontal component of mechanical chamber condenser 18 and refrigerant pipe 18a extends to the part of the dead space that is positioned at Machine Room pressure fan 17 belows.Also can make the accommodating property of mechanical chamber condenser 18 good from this point, increase the heat dissipation capacity of mechanical chamber condenser 18.In addition, be the part separating the suction side of Machine Room pressure fan 17 and discharge the part of side by fixture 33 double as of mechanical chamber condenser 18, vented construction is simplified.

In concrete being provided with in the structure of mechanical chamber condenser 18, by fixture 33 side of mechanical chamber condenser 18 is fixed in mounting plate 25, the opposite side of mechanical chamber condenser 18 is fixed in refrigerator body 1 by fixture 34 and fixture 35.Like this, by striding across mounting plate 25 and solid mechanical chamber, refrigerator body 1 ground condenser 18, can fix simply.

Below, specifically describe the structure that is provided with of mechanical chamber condenser 18.22 rear (rear side) accommodates mechanical chamber condenser 18 from the Machine Room, the conjugate foramen (not shown) that the joint fastener 33a that will be positioned at fixture 33 leading sections is inserted into mounting plate 25 engages, and the joint fastener 33b that will be positioned at end, a rear flank by screw is fixed in the rearward end of mounting plate 25.In addition, fixture 34 passes through fixedly fixture 35 of

joint fastener

34a, 34b, the joint fastener 35a of this fixture 35 is fixed in the back side of refrigerator body 1.Like this, mechanical chamber condenser 18 is fixed in refrigerator body 1.

When the pressure fan 17 of operation Machine Room, the air 28 that is drawn into Machine Room 22 from bottom surface suction inlet 30 mainly carries out heat exchange by the horizontal part 18c of mechanical chamber condenser 18, simultaneously, mainly carry out heat exchange from cover suction inlet 42 and casing suction inlet 31 inhaled airs 28 by the vertical component effect 18d of mechanical chamber condenser 18, the air 28 that has carried out this heat exchange is blown out to compressor 16 sides from Machine Room pressure fan 17, this air 29 carries out heat exchange with compressor 16, afterwards, be discharged to the outside of Machine Room 22 from cover outlet 43 and casing outlet 32.

Mechanical chamber condenser 18 is made of the intersection fin tube type heat exchanger with plate-shaped fins 18b, so, compare with existing helical fin formula condenser, heat transfer area that can the unit's of enlarging markedly possessive volume is even also can obtain big heat dissipation capacity in narrow and small Machine Room 22.

In addition, mechanical chamber condenser 18 is owing to form by horizontal component and erect the L word shape that part constitutes, so, can increase heat dissipation capacity suppressing to increase its heat transfer area when flowing resistance increases.In this occasion, form casing suction inlet 31 owing to cut the bight of refrigerator body 1, so, can guarantee the part of leg 26 to be installed, and can in the intensity of guaranteeing mounting plate 25, obtain the suction air quantity that enough being drawn into increased the mechanical chamber condenser 18 of the L word shape that sucks area at mounting plate 25.

In the present embodiment, mechanical chamber condenser 18 uses the intersection finned type heat exchanger that is arranged side by side a plurality of plate-shaped fins 18b at the refrigerant pipe 18a that forms the shape that crawls, by Machine Room pressure fan 17 forced ventilations, make face and semi-hermetic space dispose mechanical chamber condenser 18 opposite to each other with broad area, so, can increase heat transfer area, simultaneously at the unit possessive volume of narrow and small Machine Room 22, can make the heat transfer property high performance of mechanical chamber condenser 18, realize the economize on electricityization of refrigerator thus.Particularly owing to the plate-shaped fins 18b with mechanical chamber condenser 18 forms waveform, simultaneously this fin pitch is set in the scope of 1.3mm-1.8mm, so, can make the mechanical chamber condensers 18 that are arranged in the narrow and small Machine Room 22 have suitable flowing resistance, wide heat transfer area and high heat transfer property, can further improve the performance of mechanical chamber condenser 18.

In addition, constitute Machine Room pressure fan 17 by the propeller type pressure fan that protrudes configuration towards mechanical chamber condenser 18 sides from the guide ring 41 of being located at demarcation strip 40, simultaneously, around the ventilation road of sealing from mechanical chamber condenser 18 to Machine Room pressure fan 17, be formed on the semi-hermetic space of the gap location opening of the fin gap of mechanical chamber condenser 18 and Machine Room pressure fan 17, also make face and semi-hermetic space dispose mechanical chamber condenser 18 opposite to each other with wide area, so, the suction side end face that is attached to mechanical chamber condenser 18 at cotton dirt produces such occasion of stopping up, by the air in the Machine Room pressure fan 17 ventilation roads of stirring that protrude in this ventilation road from mechanical chamber condenser 18 to Machine Room pressure fan 17, simultaneously, make air pass through Machine Room pressure fan 17 and in the semi-hermetic space, come in and go out, mechanical chamber condenser 18 is cooled off by the air of semi-hermetic space side.Like this,, also can suppress mechanical chamber condenser 18 performance decrease, guarantee the runnability of refrigerator even the suction side of mechanical chamber condenser 18 is stopped up.Particularly because 18 sides make Machine Room pressure fan 17 surpass half ground protrusion of axial dimension from guide ring 41 towards mechanical chamber condenser, so, can increase at the suction side of mechanical chamber condenser 18 end face and adhere to cotton dirt etc. and discrepancy in the relative semi-hermetic of the stirring space of the Machine Room pressure fan 17 of the occasion stopped up, can further improve the cooling of mechanical chamber condenser 18 with air.

In addition, mechanical chamber condenser 18 uses the intersection finned type heat exchanger that is arranged side by side a plurality of plate-shaped fins 18b at the refrigerant pipe 18a that forms the shape that crawls, in the Machine Room 22 that forms by the size space bigger up and down mechanical chamber condenser 18 is set than depth dimensions, and, make the crooked position that crawls of refrigerant pipe 18a in the upper and lower, the refrigerant pipe 18a that forms the shape that crawls is arranged along fore-and-aft direction, so, directly do not diminish, even in narrow and small Machine Room 22, can form mechanical chamber condenser 18 with big heat transfer area and draught area as the front and back width of the bend part of living in of crawling of the refrigerant pipe 18a of heat transfer part yet.Like this, the bend that crawls of refrigerant pipe 18a reduces, and the cost of formation is low, and the performance of mechanical chamber condenser 18 improves, and can realize the economize on electricityization of refrigerator.Particularly the occasion of welding behind the bend of the refrigerant pipe 18a that is formed mechanical chamber condenser 18 by other all-in-one-piece swan-neck can reduce its welding position, reduces cost significantly.

In addition, mechanical chamber condenser 18 uses the intersection finned type heat exchanger that is arranged side by side a plurality of plate-shaped fins 18b at the refrigerant pipe 18a that forms the shape that crawls, make its all shape become towards about, front and back, and the above-below direction three-dimensional shape ground warpage formation of extending, so, even in narrow and small Machine Room 22, also can form mechanical chamber condenser 18 with big heat transfer area and big draught area.Like this, can realize the economize on electricityization of refrigerator by simply constituting the performance that improves mechanical chamber condenser 18.Particularly owing to dismantledly the Machine Room cover is installed on refrigerator body, simultaneously, with mechanical chamber condenser 18 form by with the underside wall portion of Machine Room 22 part in opposite directions and the cardinal principle L word shape that constitutes with side walls portion part in opposite directions, so, under the state of pulling down the Machine Room cover, can between Machine Room pressure fan 17 and mechanical chamber condenser 18, expose big space, utilize this space to carry out installation and removal of Machine Room pressure fan 17 and mechanical chamber condenser 18 etc. etc. easily.In addition, owing to constitute mechanical chamber condenser 18 with a row intersection fin tube type heat exchanger, so, with intersect the occasion that fin tube type heat exchanger constitutes by multiple row and compare, flowing resistance is little, can increase air quantity, can increase towards the air quantity of compressor 16, reduce compressor temperature.

In addition, with mechanical chamber condenser 18 form by with the horizontal part 18c in opposite directions of underside wall portion of above-mentioned Machine Room 22 and the cardinal principle L word shape that constitutes with the vertical component effect 18d in opposite directions of side walls portion, by fixture 33 end of the horizontal part 18c of mechanical chamber condenser 18 is installed on mounting plate 25, simultaneously, by fixture 34,35 ends with this vertical component effect 18d are installed on refrigerator body 1, form suction inlet in horizontal part 18c mounting plate 25 parts in opposite directions with mechanical chamber condenser 18, so, can be in the effect of the economize on electricityization that obtains the realization refrigerator, increase the transverse width of refrigerator body 1 relatively, the refrigerator of increase capacity, prolong the horizontal part 18c that increases mechanical chamber condenser 18, form greatlyyer along its bottom surface suction inlet 30 with mounting plate 25, thereby can increase the ability of mechanical chamber condenser 18, need not change the installation constitution of mechanical chamber condenser 18 significantly, can make fixture 33-35 and manufacture method generalization, easily carry out correspondence with low cost.Particularly owing to about Machine Room cover 24, form suction inlet 42 and discharge 43, so, can reduce flowing resistance, increase air quantity, improve the performance of mechanical chamber condenser 18, simultaneously, increase the transverse width of refrigerator body 1, the refrigerator of increase capacity relatively, by keep making under the identical state of two side positions Machine Room cover 24 about suction inlet 42 and discharge 43 and increase transverse widths, thereby carry out correspondence easily.

In addition, since mechanical chamber condenser 18 form by with the underside wall portion of Machine Room 22 part in opposite directions and the cardinal principle L word shape that constitutes with side walls portion part in opposite directions, propeller type pressure fan by the 18 sides protrusion configuration from guide ring 41 towards mechanical chamber condenser constitutes Machine Room pressure fan 17, simultaneously, that be configured to mechanical chamber condenser 18 and top bottom, bottom surface part in opposite directions, so, can easily increase the axial dimension (thickness) of Machine Room pressure fan 17, increase air quantity, improve condenser performance.

Below, according to Fig. 8 another embodiment of the present invention is described.Fig. 8 is the back view of Machine Room portion that the refrigerator of the 2nd embodiment of the present invention is shown.

The intersection finned type heat exchanger that present embodiment is arranged side by side plate-shaped fins 18b by the refrigerant pipe 18a that strides across multiple row constitutes the mechanical chamber condenser 18 of flat condition, this mechanical chamber condenser 18 vertically is arranged at the suction side of Machine Room pressure fan 17, different in this point with the 1st embodiment, for other point, basic identical with the 1st embodiment.In the present embodiment, the shape of mechanical chamber condenser 18 is simplified, and cost of manufacture is low, simultaneously, can easily be applied to the narrow and small refrigerator body of transverse width 1.

Below, with reference to Figure 12 and Figure 13 another embodiment of the present invention is described.Figure 12 is the back side sectional schematic diagram of Machine Room portion that the refrigerator of the embodiment of the invention is shown, and Figure 13 is the back perspective view that the part of this Machine Room portion is shown.

Machine Room 101 is formed by the space of transverse extension and vertically higher cardinal principle rectangular shape, that is, by size up and down than depth dimensions big and transverse width dimension than about the big space of size form.Specifically, the upper angled of front side wall portion, simultaneously, back side central portion protrudes towards the rear slightly.Compressor 106 is disposed at a side of the left and right directions of Machine Room 101, and mechanical chamber condenser 108 is disposed at the opposite side of the left and right directions of Machine Room 101.Machine Room air-supply arrangement 170 has the Machine Room partition member 171 and the Machine Room pressure fan 172 to ventilating between the space of being separated by this Machine Room partition member 171 of will divide right and left in the Machine Room 101.When compressor 106 being equipped on the left side when the back side is watched, Machine Room air-supply arrangement 170 and mechanical chamber condenser 108 are equipped on the right side at support 103.

Machine Room partition member 171 by the integrally formed frame 107a of synthetic resin such as polypropylene, guide ring 107b, motor stay 107c, and separate board 107d.Like this, frame 107a, guide ring 107b, motor stay 107c, and separate board 107d and can be made compactly by low cost, accommodating property and assembleability in narrow and small Machine Room 101 are good.In the occasion that does not need this effect, frame 107a, guide ring 107b, motor stay 107c, and separate board 107d and also can form respectively, constitute Machine Room partition member 171.

Frame 107a is formed at the periphery of separating board 107d in the periphery foreign side of guide ring 107b with the frame shape, has improved the intensity of Machine Room partition member 171, simultaneously, is formed in the installed surface of Machine Room 101.This frame 107a specifically forms to have in side plate 110, Machine Room cover 105, container for evaporation 163, and the shape of the installed surface of bottom panel 104, can it is installed airtightly relatively.

Guide ring 107b forms central opening with the circular central portion of separating board 107d that is formed at.The inner peripheral surface of the reality of this guide ring 107b forms the inclined plane of the expansion from central portion towards Machine Room, left and right sides side.Even the side face of this guide ring 107b forms recess and stage portion, as long as actual inner peripheral surface tilts.In addition, the relative frame 107a of guide ring 107b overlaps at Machine Room left and right directions (Machine Room pressure fan 172 axially).

Motor stay 107c constitutes by a plurality of beam portions of extending from Machine Room 101 sides of guide ring 107b towards center position with at the motor installation portion cylindraceous that the central authorities of this beam portion have.

Machine Room pressure fan 172 is configured in the central opening of Machine Room partition member 171, has propeller type fan 107 that the air in the Machine Room 101 is ventilated and the fan motor 112 that drives this propeller type fan 107.

Propeller type fan 107 constitutes by the wheel hub 113a of cylinder cup-shaped with at the integrally formed a plurality of blades 113 of its periphery.The axial width dimension of blade 113 forms greatlyyer than the width dimensions of guide ring 107b and frame 107a, protrude (bulged blade thickness about 10%) towards compressor side in the axial direction from guide ring 107b and frame 107a, simultaneously, protrude towards condenser side in the axial direction from guide ring 107b and frame 107a morely.From guide ring 107b and the frame 107a ventilation when the increase of the protrusion amount of the condenser side ventilation usually time the in order to ensure blade 113 and condenser mesh are stopped up in the axial direction, particularly be preferably in the over half of width of blade.

One side of fan motor 112 is accommodated and is installed on motor stay 107c, and opposite side is contained in wheel hub 113a.Like this, Machine Room pressure fan 172 thin typeizations, the accommodating property in Machine Room 101 is good.The gyroaxis of fan motor 112 is fixed in wheel hub 113a, the turning power of fan motor 112 is delivered to propeller type fan 107, make its revolution.

Above-mentioned Machine Room air-supply arrangement 170 is under the nonclogging common state of condenser mesh, have the function that air is ventilated like that shown in the solid arrow 118 of Figure 12 and Figure 13, compressor 106 in being disposed at Machine Room 101 and mechanical chamber condenser 108 carry out forced ventilation.The space that is surrounded by bottom panel 104, support 103, Machine Room cover 105 etc. around the ventilation Lu Weiqi from this mechanical chamber condenser 108 to Machine Room air-supply arrangement 170 forms the semi-hermetic space at the gap location opening of the fin gap of mechanical chamber condenser 108 and Machine Room pressure fan 172.

The air suction portion of Machine Room 101 by the following suction inlet 103a that is formed at support 103, cut the chest portion suction inlet that the part of bottom panel 104 forms and be formed at the Machine Room and cover the back side suction inlet 105a of 105 1 sides and constitute.Suction inlet 103a is formed by the opening of a plurality of slit-shaped below being somebody's turn to do, and the opening of these a plurality of slit-shaped is formed on support 103 parts of the horizontal part suction side, that be positioned at mechanical chamber condenser 108 below that is in Machine Room air-supply arrangement 170.In addition, the chest portion suction inlet forms by cutting the ventilation road that constitutes with the bight of Machine Room 101 bottom panel 104 in opposite directions, is positioned at the place ahead of the suction side of mechanical chamber condenser 108.In addition, back side suction inlet 105a is formed by the opening of a plurality of slit-shaped, and the opening of these a plurality of slit-shaped is formed on the Machine Room of the suction side of the vertical component effect that is positioned at mechanical chamber condenser 108 and covers 105 parts.

In addition, the discharge portion of the air of Machine Room 101 comprises the back side outlet that is formed at Machine Room cover 105 and by cutting the chest portion outlet that the ventilation road that constitutes with the bight of the bottom panel 104 of Machine Room 101 forms.The opening that this back side outlet covers a plurality of narrow shapes of 105 parts by the Machine Room that is formed on the discharge side that is positioned at Machine Room air-supply arrangement 170 forms.In addition, the casing outlet is formed at the opposition side of chest portion suction inlet substantially symmetrically.

On the other hand, mechanical chamber condenser 108 by refrigerant pipe 108b, radiating fin 108a, and side plate 110,110a constitute.This refrigerant pipe 108b simultaneously, is formed at direction of ventilation with 1 row by a tubular shape that crawls that becomes of refrigerant.The refrigerant inlet 114 of refrigerant pipe 108b is located at air-supply arrangement opposition side (the upper right end side of Figure 13).In addition, radiating fin 108a is made of wave-shaped fins, and it is a plurality of that each refrigerant pipe 108b that is listed as is arranged side by side with connecting, constitutes the intersection fin tube type heat exchanger.In this embodiment, its fin is spaced apart 1.5mm, and fin scope at interval is preferably in the scope of 1.3mm-1.8mm.In addition, side plate 110,110a are positioned at the both sides of radiating fin 108a, and refrigerant pipe 108b connects and is fixed in refrigerant pipe 108b with protruding into both sides.

Mechanical chamber condenser 108 by plastic working the crisscross bending in the length direction upper edge of refrigerant pipe 108b (make and the air-supply arrangement opposition side towards and the axial direction bending that intersects), the L word shape that all shapes is formed constitute by horizontal part and vertical component effect.In other words, make all shapes of mechanical chamber condenser 108 become the three-dimensional shape ground warpage formation of extending towards front and back and above-below direction.Like this, mechanical chamber condenser 108 constitutes by the axially extended horizontal part that intersects along the vertical plane with Machine Room air-supply arrangement 170 with Machine Room air-supply arrangement 170 vertical component effect in opposite directions.

In addition, the horizontal part of mechanical chamber condenser 108 more extends the ground configuration towards compressor side in the axial direction than Machine Room air-supply arrangement 170 axial condenser side ends.Specifically, the compressor side end of the horizontal part of mechanical chamber condenser 108 have with the guide ring 107b of Machine Room air-supply arrangement 170 and frame 107a to overlap the coincidence part that size S overlaps.Form the space between guide ring 107b in this coincidence part and frame 107a and the radiating fin 108a.This space has space length L between frame 107a and radiating fin 108a.Like this, make and partly to flow into wind from the radiating fin 108a of the mechanical chamber condenser 108 of coincidence part, improve heat exchange performance.The forward surface with Machine Room air-supply arrangement 170 at this coincidence part posts heat-insulating material 109.Like this, even the high temperature refrigerant gas that flows into makes the temperature of mechanical chamber condenser 108 rise to high temperature, also can prevent distortion by the Machine Room air-supply arrangement 170 of resin making.

Side plate 110,110a are used to keep mechanical chamber condenser 108 and have enough intensity, are fixed in the both ends of mechanical chamber condenser 108.The side plate 110 of one side forms Contraband font section substantially and extends towards front and back, and lower flange 110b is fixed in support 103 by screw, gets involved heat-insulating material 111 ground and by screw upper flange 110a is fixed in frame 107a.Like this, partition member 171 supportings in Machine Room are fixed on the side plate 110.The height H s of this side plate 110 is than the height H f height of radiating fin 108a.Like this, guaranteed the space length L of above-mentioned coincidence part.Also can be provided with between upper flange 110a and the heat-insulating material 111 or between heat-insulating material 111 and the Machine Room partition member 171 plug member for example metal system plug member, make the height of adjustable whole Machine Room partition member 171.In addition, the side plate 110a of opposite side extend to bottom panel 104 below, be fixed in bottom panel 104 by screw.Radiating fin 108a uses wave-shaped fins, so the intensity of mechanical chamber condenser 108 increases, and can easily install etc.

Mechanical chamber condenser 108 is arranged in the Machine Room 101, and its horizontal part and following suction inlet 103a are horizontal opposite to each other substantially, and its vertical component effect is in vertical position opposite to each other substantially with the side plate 102b that forms Machine Room 101 sidewalls.In other words, the crooked position that crawls of refrigerant pipe 108b is 101 upper and lower in the Machine Room, and simultaneously, the refrigerant pipe 108b that forms the shape that crawls arranges ground along fore-and-aft direction and is provided with.Therefore, the bend of the square end of refrigerant pipe 108b protrudes towards horizontal (being left-hand in Figure 12) as the length direction of Machine Room 101, and the bend of another square end protrudes into the top as the longitudinally of Machine Room.Like this, the part from side plate 110,110a protrusion of refrigerant pipe 108b protrudes into the well-to-do space the Machine Room 101, so, the accommodating property of mechanical chamber condenser 108 is good, big mechanical chamber condenser 108 narrow and small Machine Room 101 can be contained in, the heat dissipation capacity of mechanical chamber condenser 108 can be increased.

In addition, the projection of the end of the horizontal component of mechanical chamber condenser 108 and refrigerant pipe 108b extends to the part of the dead space that is positioned at Machine Room pressure fan 172 belows.Also can make the accommodating property of mechanical chamber condenser 108 good from this point, increase the heat dissipation capacity of mechanical chamber condenser 108.In addition, be the part separating the suction side of Machine Room air-supply arrangement 170 and discharge the part of side by side plate 110 double as of mechanical chamber condenser 108, vented construction is simplified.

Mechanical chamber condenser 108 is fixed in support 103 by side plate 110 with a side of mechanical chamber condenser 108, and the opposite side of mechanical chamber condenser 108 is fixed in bottom panel 104 by side plate 110a.Like this, by striding across support 103 and solid mechanical chamber, bottom panel 104 ground condenser 108, can fix simply.

When the pressure fan 172 of operation Machine Room, the air 128 that is drawn into Machine Room 101 from following suction inlet 103a mainly carries out heat exchange by the horizontal part of mechanical chamber condenser 108, simultaneously, mainly carry out heat exchange from back side suction inlet 105a and casing suction inlet inhaled air 128 by the vertical component effect of mechanical chamber condenser 108, the air 128 that has carried out this heat exchange is blown out to compressor 106 sides from Machine Room pressure fan 172, this air 129 carries out heat exchange with compressor 106, afterwards, be discharged to the outside of Machine Room 101 from back side outlet and chest portion outlet.

Mechanical chamber condenser 108 is owing to constitute with the intersection fin tube type heat exchanger with radiating fin 108a, so, comparable existing helical fin formula condenser obviously increases the heat transfer area of unit possessive volume, also can obtain big heat dissipation capacity in narrow and small Machine Room 101.

In addition, mechanical chamber condenser 108 is owing to form by horizontal component and erect the L word shape that part constitutes, so, can increase heat dissipation capacity suppressing to increase its heat transfer area when flowing resistance increases.In this occasion; form the chest portion suction inlet owing to cut the bight of the bottom panel 104 of refrigerator body 141; so; part can be guaranteed, the suction air quantity that enough being drawn into increased the mechanical chamber condenser 108 of the L word shape that sucks area can be in the intensity of guaranteeing support 103, obtained at support 103 installation legs 166.

In the present embodiment, mechanical chamber condenser 108 uses the intersection finned type heat exchanger that is arranged side by side a plurality of radiating fin 108a at the refrigerant pipe 108b that forms the shape that crawls, by Machine Room air-supply arrangement 170 forced ventilations, make face extend ground configuration mechanical chamber condenser 108 along the ventilation road with broad area, so, can increase heat transfer area at the unit possessive volume of narrow and small Machine Room 101, simultaneously, can make the heat transfer property high performance of mechanical chamber condenser 108, realize the economize on electricityization of refrigerator thus.Particularly owing to the radiating fin 108a with mechanical chamber condenser 108 forms waveform, simultaneously this fin pitch is set in the scope of 1.3mm-1.8mm, so, can make the mechanical chamber condensers 108 that are arranged in the narrow and small Machine Room 101 have suitable flowing resistance, wide heat transfer area and high heat transfer property, can further improve the performance of mechanical chamber condenser 108.

In addition, by constituting Machine Room air-supply arrangement 170 towards the propeller type fan 107 that the mechanical chamber condenser side is protruded in the axial direction from guide ring 107b and the frame 107a that is located at Machine Room partition member 171, simultaneously, the space of the fin gap that is formed on mechanical chamber condenser 108 on every side on the ventilation road of sealing and the gap location opening of Machine Room pressure fan 172 from mechanical chamber condenser 108 to Machine Room air-supply arrangement 170, also make face extend ground configuration mechanical chamber condenser 108 along the ventilation road with wide area, so, the suction side end face that is attached to mechanical chamber condenser 108 at cotton dirt produces the occasion of stopping up, by the air in the Machine Room pressure fan 172 ventilation roads of stirring that protrude in this ventilation road from mechanical chamber condenser 108 to Machine Room pressure fan 172, simultaneously, carry out discrepancy, mechanical chamber condenser 108 is cooled off by the air in condenser side space by propeller type fan 107 air in the condenser side space.Like this,, also can suppress mechanical chamber condenser 108 performance decrease, guarantee the runnability of refrigerator even the suction side of mechanical chamber condenser 108 is stopped up.Particularly because 108 sides make propeller type fan 107 surpass half ground protrusion of axial dimension from guide ring 107b towards mechanical chamber condenser, so, can increase at the suction side of mechanical chamber condenser 108 end face and adhere to cotton dirt etc. and discrepancy in the relative condenser side of the stirring space of the Machine Room pressure fan 172 of the occasion stopped up, can further improve the cooling of mechanical chamber condenser 108 with air.

In addition, mechanical chamber condenser 108 uses the intersection finned type heat exchanger that is arranged side by side a plurality of radiating fin 108a at the refrigerant pipe 108b that forms the shape that crawls, in the Machine Room 101 that forms by the size space bigger up and down mechanical chamber condenser 108 is set than depth dimensions, and, make the crooked position that crawls of refrigerant pipe 108b in the upper and lower, the refrigerant pipe 108b that forms the shape that crawls is arranged along fore-and-aft direction, so, directly do not diminish, even in narrow and small Machine Room 101, can form mechanical chamber condenser 108 with big heat transfer area and draught area as the front and back width of the bend part of living in of crawling of the refrigerant pipe 108b of heat transfer part yet.Like this, the bend that crawls of refrigerant pipe 108b reduces, and the cost of formation is low, and the performance of mechanical chamber condenser 108 improves, and can realize the economize on electricityization of refrigerator.Particularly the occasion of carrying out soldering behind the bend of the refrigerant pipe 108b that is formed mechanical chamber condenser 108 by other all-in-one-piece swan-neck can reduce its soldering position, reduces cost significantly.

In addition, mechanical chamber condenser 108 uses the intersection finned type heat exchanger that is arranged side by side a plurality of radiating fin 108a at the refrigerant pipe 108b that forms the shape that crawls, make its all shape become towards about, front and back, and the above-below direction three-dimensional shape ground warpage formation of extending, so, even in narrow and small Machine Room 101, also can form mechanical chamber condenser 108 with big heat transfer area and big draught area.Like this, can realize the economize on electricityization of refrigerator by simply constituting the performance that improves mechanical chamber condenser 108.Particularly owing to dismantledly Machine Room cover 105 is installed on refrigerator body 141, simultaneously, with mechanical chamber condenser 108 form by the underside wall portion with Machine Room 101 be support 103 in opposite directions part and with side walls portion be the cardinal principle L word shape that side plate 102b part in opposite directions constitutes, so, under the state of pulling down Machine Room cover 105, can between Machine Room air-supply arrangement 170 and mechanical chamber condenser 108, expose big space, thereby can utilize this space easily to carry out installation and removal of the maintenance of Machine Room pressure fan 172 and mechanical chamber condenser 108 etc. etc.In addition, owing to constitute mechanical chamber condenser 108 with a row intersection fin tube type heat exchanger, so, with intersect the occasion that finned type heat exchanger constitutes by multiple row and compare, flowing resistance is little, can increase air quantity, improve the heat exchange performance of mechanical chamber condenser 108, simultaneously, can increase, reduce compressor temperature towards the air quantity of compressor 106.

In addition, with mechanical chamber condenser 108 form by the underside wall portion with above-mentioned Machine Room 101 be support 103 in opposite directions horizontal part and with side walls portion be the cardinal principle L word shape that side plate 102b vertical component effect in opposite directions constitutes, by side plate 110 end of the horizontal part of mechanical chamber condenser 108 is installed on support 103, simultaneously, by side plate 110a the end of this vertical component effect being installed on refrigerator body 141 is bottom panel 104, form suction inlet 103a in horizontal part support 103 parts in opposite directions with mechanical chamber condenser 108, so, can be in the effect of the economize on electricityization that obtains the realization refrigerator, increase the transverse width of refrigerator body 141 relatively, the refrigerator of increase capacity, prolong the horizontal part that increases mechanical chamber condenser 108, form suction inlet 103a below the support 103 bigger along it, thereby can increase the ability of mechanical chamber condenser 108, need not change the installation constitution of mechanical chamber condenser 108 significantly, can make side plate 110,110a generalization and manufacture method generalization are easily carried out correspondence with low cost.Particularly owing to about Machine Room cover 105, form back side suction inlet 105a and back side outlet, so, can reduce flowing resistance, increase air quantity, improve the performance of mechanical chamber condenser 108, simultaneously, increase the transverse width of refrigerator body 141, the refrigerator of increase capacity relatively, by keep making under the identical state of two side positions Machine Room cover 105 about back side suction inlet 105a and back side outlet increase transverse width, thereby easily carry out correspondence.

In addition, since mechanical chamber condenser 108 form by the underside wall portion with Machine Room 101 be support 103 in opposite directions part and with side walls portion be the cardinal principle L word shape that side plate 104b part in opposite directions constitutes, has the propeller type fan 107 that 108 sides dispose Machine Room pressure fan 172 protrusions from guide ring 107b towards mechanical chamber condenser, simultaneously, be configured to mechanical chamber condenser 108 with underside wall portion be the top of support 103 part in opposite directions, so, can easily increase the axial dimension (thickness) of Machine Room pressure fan 172, increase air quantity, improve condenser performance.

As described above, about equipment holding, owing to above mechanical chamber condenser 108, accommodate Machine Room air-supply arrangement 170, so, be of a size of zero about can making between the two.Because the discharge side of Machine Room air-supply arrangement 170 covers blade 113 by non-rotating motor stay 107c, so, can easily guarantee and refrigerant around compressor 106, the compressor safe distance with discharge pipe and recurrent canal, container for evaporation 163 etc.The profile of mechanical chamber condenser 108 also can be accommodated bigger equipment corresponding to the amount of Machine Room air-supply arrangement 170 and mechanical chamber condenser 108 coincidences.

In addition, mechanical chamber condenser 108 can make its radiating fin 108a enter into the below of the frame 107a of Machine Room partition member 171, also can ventilate from support 103, can heat transfer surface area that link the radiating fin 108a of the stacked shape between pipe and refrigerant pipe 108b is bigger, so, can obtain high heat-sinking capability, simultaneously, can accommodate the small space in the Machine Room 101, also airspace can be set.

In addition and since make a side opposite of mechanical chamber condenser 108 with air-supply arrangement with axially across towards the top bending, so, can further increase heat transfer surface area.In addition, it is sucked at wide region because following suction inlet 103a and the back side suction inlet 105a corresponding with sucking direction are set, so, air quantity can be increased.Like this, can improve the heat-sinking capability of mechanical chamber condenser 108.

For Machine Room air-supply arrangement 170, owing to make blade 113 protrude into condenser side in the axial direction from frame 107a, so, from the circumferencial direction of blade 113 wind is fully flowed into, except that support 103 axially, also can obtain intake function from the axle right angle orientation, cover 105 back side suction inlet 105a increase air quantity, improve heat-sinking capability by the curved configuration form of corresponding therewith mechanical chamber condenser 108 and following suction inlet 103a, the Machine Room of support 103.In addition, in the suction face setting of guide ring 107b along with flowing into spigot surface towards discharging the inclined-plane 107bb that side is advanced, forming gradually near blade, so, can further increase air quantity, improve heat-sinking capability.

In addition, when carrying out the installation of Machine Room air-supply arrangement 170, side plate 110 by dual-purpose mechanical chamber condenser 108, has the advantage that does not increase number of components and do not need the size suitable with the air-supply arrangement thickness that is used to install, and, can guarantee space easily and correctly with radiating fin 108a by adjusting the height H s of side plate 110.

Corresponding with elevated temperature heat, owing between radiating fin 108a and frame 107a, have space length L and below the frame 107a of pressure fan, post heat-insulating material 109 opposite to each other with the radiating fin 108a that is positioned at coincidence part, so, the heat that can cut off radiating fin 108a, the temperature that reduces frame 107a rises.In addition, for heat, can reduce the temperature rising of frame 107a by the heat-insulating material between the upper flange 110a of frame 107a and side plate 110 111 from side plate 110 sides.In addition, the high temperature refrigerant of sending here from compressor 106 enters from an opposite side with air-supply arrangement of mechanical chamber condenser 108, and the temperature difference of air and refrigerant is bigger, simultaneously, refrigerant temperature is during passing through refrigerant Guan Yigen, but low temperatureization does not produce the degree of distortion to frame 107a.Like this, can prevent the distortion of frame 107a.

In the use of refrigerator, even by cotton dirt etc. mesh is stopped up in the suction side of mechanical chamber condenser 108, owing to make the blade 113 of Machine Room pressure fan 172 protrude into radiating fin 108a side, change to centrifugal direction, the very large characteristic of its absolute flow velocity so also can make full use of at propeller type fan 107 discharge currents when flowing resistance becomes big from guide ring 107b and frame 107a.Promptly, in the inner space that surrounds by Machine Room air-supply arrangement 170 and mechanical chamber condenser 108, become big rotating centrifugal stream from the periphery protuberance velocity of discharge of blade 113, (an opposite side) edge all carry out forced circulation from the inner face side of mechanical chamber condenser 108 to the depths radiating fin 108a with air-supply arrangement, siphon away heat from mechanical chamber condenser 108, the heat radiation of mechanical chamber condenser 108 is carried out near for example discharge such as the wheel hub of the more weak position of pressure from the surface of revolution of the part of mechanical chamber condenser 108 or propeller type fan 107.

Above-mentioned rotating centrifugal stream is little with the relation of air quantity, basically arrange by the revolution circular velocity of propeller type fan 107, be generally about about 10 times by the speed between radiating fin 108a, the surface coefficient of heat transfer of radiating fin 108a further improved with this bigger speed.

Below, describe flowing of this wind in detail with reference to Figure 12.As shown in figure 12, the solid line that streamline is shown illustrates the common user mode of refrigerator, and the suction side that is shown in dotted line mechanical chamber condenser that streamline is shown produces the state that mesh is stopped up.

The blade 113 of this propeller type fan 107 is owing to determine the direction that flows into and flow out by making along axial section variation, so, can not obtain high pressure.The ventilation loads of Machine Room air-supply arrangement 170 (resistance of ventilation) is when becoming big, sharply descends from the air quantity of mechanical chamber condenser side.Yet in this occasion, axial inflow composition diminishes, and the blade revolution still remains unchanged, so, being rotated into the power that branch occupies and becoming big relatively, the difference of the circular velocity of blade 113 outer circumferential sides and central side is that the static pressure official post flows into to from the centrifugal stream of central side towards outer circumferential side.In the characteristic curve of the air quantity-pressure of Machine Room air-supply arrangement 170, this change point is called pumping point or stall point.This point is present in about 70% point as uncharge maximum quantity of wind, and during ventilation loads more than becoming this, beginning becomes centrifugal stream sharp, becomes the fan duty of centrifugal type, and pressure is risen.In the characteristic curve of air quantity-pressure, the maximal pressure force when closing fully, this be by with the value of the circular velocity decision of the irrelevant blade 113 of air quantity.That is, even when closing fully, the absolute velocity of rotating centrifugal stream is also very big.

In the present invention, has above-mentioned rotating centrifugal stream, simultaneously, even being reduced also big this characteristic of absolute velocity, air quantity fully is used to improve heat-exchange capacity, thereby need with compressor 106 than focus on more in the past the Machine Room, need be than the occasion of more dispelling the heat in the past, can obtain sufficient heat-sinking capability, make ventilation loads become big, also can obtain the regulation cooling of apotheca even dust is attached to mechanical chamber condenser 108 grades.

That is, in the time of usually, as recording and narrating before this like that, by solid line 118 like that comprise frame 107a below in the wide region of fin portion by mechanical chamber condenser 108 suction wind.When ventilation loads becomes big, because blade 113 protrudes into radiating fin 108a side from frame 107a, so, as by shown in the dotted line 119 like that, in the inner space that surrounds by Machine Room air-supply arrangement 170 and mechanical chamber condenser 108, discharge rotating centrifugal stream from the protuberance of blade 113 along guide ring 107b, afterwards, but forced circulation to the inner face of mechanical chamber condenser 108 than the position, deep (to the opposition side of air-supply arrangement), siphon away heat.In this occasion, the rotating flow of wind is because based on the dynamic pressure composition, so, also transfer to the radiating fin 108a of frame 107a below fully, little by little improve static pressure, simultaneously, arrive the radiating fin 108a of depths.Pressure step-down on the pressure fan axial line, so, the air that siphons away heat and become high temperature can circulate in inner periphery, the wheel hub 113a that diminishes from peripheral speed delivers to compressor 106 sides, or position the pressure imbalance from the blade surface of revolution that the ventilation loads asymmetry that Machine Room air-supply arrangement 170 surrounding devices structures forms is brought, that centrifugal action dies down delivers to the original compressor of pressure fan 106 sides, dispels the heat.

For being taken into of these wind, the air that temperature is low covers wheel hub 113a that 105 sides diminish by circular velocity nearby and the gap inflow of blade 113 and guide ring 107b from the Machine Room, in addition, it is less that blade 113 protrudes into the size of original discharge side, make the centrifugal action reduction of discharging side, so, flow by the strong rotating centrifugal that the part on the blade surface of revolution is directed to mechanical chamber condenser 108 sides by energy balance.Above-mentioned wind be flowing in the great occasion of ventilation loads, promptly the state that by dust fin discrepancy face is stopped up with mechanical chamber condenser 108 is equal to but does not reach the occasion of this degree as yet, also produces inflow and outflow between the fin of condenser 108.

As described above, according to present embodiment, Machine Room air-supply arrangement 170 and mechanical chamber condenser 108 in the Machine Room 101 accommodating property good, can obtain more heat transfer area, improve heat-sinking capability, also can prevent to improve the thermal deformation that high temperatureization that heat-sinking capability causes is brought.In addition, the condenser that is distributed to a plurality of positions in the past can be focused on morely in the Machine Room, the waste treatment of refrigerator and recovery usability are also good.

Below, according to Figure 14 another embodiment of the present invention is described.Figure 14 is that portion's perspective view is wanted in the Machine Room of the refrigerator of the embodiment of the invention.

In the present embodiment, when the edge disposes Machine Room air-supply arrangement 120 and mechanical chamber condenser 121 up and down, prepare respectively across the erecting bed of the bridge shape of radiating fin 121a top as erecting bed 122, at the frame 120a of these erecting bed 122 supporting machinery chamber air-supply arrangements 120 and fixed, the foot section 122a of erecting bed 122 is fixed in support 103.Can obtain the effect same like this with the foregoing description, in addition, particularly can obtain to be easy to the axial effect that overlaps size S of the space length of selected best and radiating fin 121a portion and Machine Room air-supply arrangement 120 and radiating fin 121a portion, Machine Room air-supply arrangement 120 does not directly contact with mechanical chamber condenser 121, so, mutual vibration can be isolated.Between erecting bed 122 and frame 120a, heat-insulating material 123 is set, can prevents the thermal deformation of frame 120a, simultaneously, heat-insulating material 123 is clamped into the seal of the dual-purpose style between the side plate 123 of frame 120a and mechanical chamber condenser 121.

Below, according to Figure 15 another embodiment of the present invention is described.Figure 15 is that portion's perspective view is wanted in the Machine Room of the refrigerator of the embodiment of the invention.Present embodiment is different with the 1st embodiment as the back illustrates, and other point is basic identical with the 1st embodiment.

Present embodiment disposes another embodiment again of the occasion of Machine Room air-supply arrangement 124 and mechanical chamber condenser 125 up and down for the edge, prepare respectively erecting bed 126 is formed across the structure of the bridge shape of the recurrent canal 125d of mechanical chamber condenser 125 top, framework 124a is fixed in erecting bed 126, the 126a of foot of erecting bed 126 is fixed in support 103.Like this, can obtain the effect same with the foregoing description, in addition, particularly can obtain to be easy to select best the effect of the space length L of Machine Room air-supply arrangement 124 and radiating fin 125a, Machine Room air-supply arrangement 124 does not directly contact with mechanical chamber condenser 125, can prevent the distortion of the framework 124a of Machine Room air-supply arrangement 124, and mutual vibration is isolated.Between erecting bed 126 and framework 124a elastic component 127 is set, the vibration that can reduce Machine Room air-supply arrangement 124 is delivered to the degree of support 103.

Below, according to Figure 16 another embodiment of the present invention is described.Figure 16 be the embodiment of the invention refrigerator the Machine Room want portion's perspective view.

The embodiment of the buckling work when present embodiment is made for the cancellation mechanical chamber condenser.Promptly, make in the Machine Room 101 accommodate and be identical place, suck as one man along axial stacked fin 129a with the axial flow of Machine Room air-supply arrangement 128, insert the heat exchanger of the form at a right angle to constitute in couples with above-below direction in the horizontal direction by managing 129b.

According to present embodiment, can obtain the effect same with the foregoing description, particularly since fin 129a towards along Machine Room air-supply arrangement 128 axially, so easily the fin 129a from the below of frame 128a is taken into Cryogenic air, can improve the effect of coincidence part, simultaneously, making refrigerator closely be contacted with the occasion that wall uses, can be taken into more Cryogenic air from the below of support 103.In addition, the refrigerant inlet 130 that makes high-temperature gas is the epimere pipe portion of the condenser side that is positioned at air-supply arrangement opposition side and configuration along the vertical direction, afterwards, lead to horizontal direction portion with crawling, thereby when refrigerant during near pressure fan 128 sides, fully low temperatureization does not make the danger such as generation thermal deformation such as resin component that constitute pressure fan 128.For making, do not need bending techniques yet.

According to the present invention, can improve the performance of mechanical chamber condenser, realize economize on electricityization, simultaneously,, stop up cotton dirt etc. even adhering to the suction side that makes mechanical chamber condenser, also can suppress the mechanical chamber condenser performance decrease, acquisition can be guaranteed the refrigerator of refrigerator runnability.

In addition, according to the present invention, can obtain can be by constituting the performance that improves mechanical chamber condenser, the refrigerator of realizing economize on electricityization cheaply.

In addition, according to the present invention, the assembleability that can obtain the component parts in the Machine Room is good, the performance that can improve mechanical chamber condenser, the refrigerator of realizing economize on electricityization.

In addition, according to the present invention, can obtaining easily, the transverse width of corresponding refrigerator body changes the volume change of bringing and can improve the performance of mechanical chamber condenser, the refrigerator of realization economize on electricityization.

Claims

1. refrigerator, it is characterized in that: have refrigerator body, freeze cycle, reach the Machine Room pressure fan, this refrigerator body bight of bottom overleaf forms the Machine Room, this freeze cycle is connected compressor, mechanical chamber condenser, is reached evaporimeter by the refrigerant pipe, and this Machine Room pressure fan ventilates forcibly to above-mentioned compressor and above-mentioned mechanical chamber condenser;

Above-mentioned Machine Room all forms towards transverse extension ground along the transverse width of above-mentioned refrigerator body, in its left and right directions one side above-mentioned compressor is set, and at its left and right directions opposite side above-mentioned mechanical chamber condenser is set;

Above-mentioned mechanical chamber condenser is made of the intersection fin tube type heat exchanger that a plurality of plate-shaped fins are set at the refrigerant tube side-by-side that forms the shape that crawls;

Above-mentioned Machine Room pressure fan constitutes by protrude into the propeller type pressure fan that above-mentioned mechanical chamber condenser side is configured from the guide ring of being located at demarcation strip, and this demarcation strip is separated the ventilation road from above-mentioned mechanical chamber condenser to above-mentioned compressor;

The semi-hermetic space of the fin gap that is formed on above-mentioned mechanical chamber condenser on every side on the ventilation road of sealing and the gap location opening of above-mentioned Machine Room pressure fan from above-mentioned mechanical chamber condenser to above-mentioned Machine Room pressure fan; Above-mentioned mechanical chamber condenser is to have disposing facing to ground, above-mentioned semi-hermetic space of broad area.

2. refrigerator according to claim 1 is characterized in that: protrude towards half ground that above-mentioned mechanical chamber condenser side makes above-mentioned Machine Room pressure fan surpass axial dimension from the guide ring of being located at above-mentioned demarcation strip.

3. refrigerator according to claim 1 is characterized in that: the plate-shaped fins of above-mentioned mechanical chamber condenser is formed waveform, simultaneously its fin pitch is set in the scope of 1.3mm-1.8mm.

4. refrigerator, it is characterized in that: have refrigerator body, freeze cycle, reach the Machine Room pressure fan, this refrigerator body bight of bottom overleaf forms the Machine Room, this freeze cycle connects compressor, mechanical chamber condenser and evaporimeter by the refrigerant pipe, and this Machine Room pressure fan ventilates forcibly to above-mentioned compressor and above-mentioned mechanical chamber condenser;

Above-mentioned Machine Room is formed by the size space bigger than depth dimensions up and down, in its left and right directions one side above-mentioned compressor is set, at its left and right directions opposite side above-mentioned mechanical chamber condenser is set, above-mentioned Machine Room pressure fan is set between above-mentioned mechanical chamber condenser and above-mentioned compressor;

Above-mentioned mechanical chamber condenser is made of the intersection fin tube type heat exchanger that a plurality of plate-shaped fins are set at the refrigerant tube side-by-side that forms the shape that crawls, the crooked position that crawls of above-mentioned refrigerant pipe is in the upper and lower of above-mentioned Machine Room, simultaneously, the above-mentioned refrigerant pipe that forms the shape that crawls is provided with to arranging ground towards front and back.

5. refrigerator according to claim 4 is characterized in that: the bend and it is welded of crawling that is formed above-mentioned refrigerant pipe by other all-in-one-piece swan-neck.

6. refrigerator, it is characterized in that: have refrigerator body, freeze cycle, reach the Machine Room pressure fan, this refrigerator body bight of bottom overleaf forms the Machine Room, this freeze cycle is connected compressor, mechanical chamber condenser, is reached evaporimeter by the refrigerant pipe, and this Machine Room pressure fan ventilates forcibly to above-mentioned compressor and above-mentioned mechanical chamber condenser;

Above-mentioned Machine Room is by the hood-shaped one-tenth back face wall in Machine Room portion, simultaneously, transverse width along above-mentioned refrigerator body all forms towards transverse extension ground, in its left and right directions one side above-mentioned compressor is set, at its left and right directions opposite side above-mentioned mechanical chamber condenser is set, be located at along about configuration Machine Room pressure fan on the guide ring of demarcation strip that above-mentioned compressor side and above-mentioned mechanical condenser side are separated;

Above-mentioned mechanical chamber condenser is made of the intersection fin tube type heat exchanger that a plurality of plate-shaped fins are set at the refrigerant tube side-by-side that forms the shape that crawls, its all shape become along about, front and back, and the above-below direction three-dimensional shape ground warpage formation of extending.

7. refrigerator according to claim 6, it is characterized in that: cover on the back side portion that above-mentioned refrigerator body forms the Machine Room by detachable Machine Room, simultaneously, above-mentioned mechanical chamber condenser is formed by with the underside wall portion of above-mentioned Machine Room in opposite directions part and the part relative with side walls portion constitute the basic L word shape that is.

8. refrigerator according to claim 6 is characterized in that: constitute mechanical chamber condenser by the row intersection fin tube type heat exchanger that a plurality of plate-shaped fins are set at the refrigerant tube side-by-side that forms the shape that crawls.

9. refrigerator, it is characterized in that: have refrigerator body, freeze cycle, reach the Machine Room pressure fan, this refrigerator body bight of bottom overleaf forms the Machine Room, this freeze cycle connects compressor, mechanical chamber condenser and evaporimeter by the refrigerant pipe, and this Machine Room pressure fan ventilates forcibly to above-mentioned compressor and above-mentioned mechanical chamber condenser;

Above-mentioned Machine Room forms upper wall portion, front side wall portion and the both sides portion that faces the wall and meditates by above-mentioned refrigerator body, form underside wall portion by the mounting plate, by the hood-shaped one-tenth back face wall in Machine Room portion, simultaneously, transverse width along above-mentioned refrigerator body all forms towards transverse extension ground, in its left and right directions one side above-mentioned compressor is set, at its left and right directions opposite side above-mentioned mechanical chamber condenser is set, be located at along about configuration Machine Room pressure fan on the guide ring of demarcation strip that above-mentioned compressor side and above-mentioned mechanical condenser side are separated;

Above-mentioned mechanical chamber condenser is made of the intersection fin tube type heat exchanger that a plurality of plate-shaped fins are set at the refrigerant tube side-by-side that forms the shape that crawls, formation by with the underside wall portion of above-mentioned Machine Room horizontal part in opposite directions and the basic L word shape that constitutes with side walls portion vertical component effect in opposite directions, the end of above-mentioned horizontal part is installed on above-mentioned mounting plate by fixture, simultaneously, by fixture the end of above-mentioned vertical component effect is installed on above-mentioned refrigerator body;

Above-mentioned mounting plate forms suction inlet in the horizontal part part in opposite directions with above-mentioned mechanical chamber condenser.

10. refrigerator according to claim 9, it is characterized in that: the cover part forms suction inlet in the Machine Room between the side wall portion of above-mentioned mechanical chamber condenser and above-mentioned refrigerator body, simultaneously, the part in the compressor side that is positioned at above-mentioned demarcation strip forms outlet.

11. refrigerator, it is characterized in that: have refrigerator body, freeze cycle and Machine Room pressure fan, this refrigerator body bight of bottom overleaf forms the Machine Room, this freeze cycle connects compressor, mechanical chamber condenser and evaporimeter by the refrigerant pipe, and this Machine Room pressure fan ventilates forcibly to above-mentioned compressor and above-mentioned mechanical chamber condenser;

Above-mentioned mechanical chamber condenser is made of the intersection fin tube type heat exchanger that a plurality of plate-shaped fins are set at the refrigerant tube side-by-side that forms the shape that crawls, form simultaneously by with the underside wall portion of Machine Room part in opposite directions and the basic L word shape that constitutes with side walls portion part in opposite directions;

Above-mentioned Machine Room pressure fan constitutes by protrude into the propeller type pressure fan that above-mentioned mechanical chamber condenser side is configured from the guide ring of being located at demarcation strip, simultaneously, is configured in above-mentioned mechanical chamber condenser and top diapire face part in opposite directions.

12. refrigerator, it is characterized in that: have refrigerator body, freeze cycle, reach the Machine Room pressure fan, this refrigerator body bight of bottom overleaf forms the Machine Room, this freeze cycle connects compressor, mechanical chamber condenser and evaporimeter by the refrigerant pipe, and this Machine Room pressure fan ventilates forcibly to above-mentioned compressor and above-mentioned mechanical chamber condenser;

Above-mentioned mechanical chamber condenser is made of the intersection fin tube type heat exchanger that a plurality of radiating fins are set at the refrigerant tube side-by-side that forms the shape that crawls, and has the part of extending to left and right direction in above-mentioned Machine Room;

Above-mentioned Machine Room air-supply arrangement constitutes the air of above-mentioned Machine Room to left and right direction with ventilating;

The above-mentioned relatively Machine Room of the part air-supply arrangement that extends to left and right direction of above-mentioned mechanical chamber condenser is overlapped along left and right directions, and formation is as the spatial portion on suction ventilation road between the mechanical chamber condenser of this coincidence and Machine Room air-supply arrangement.

13. refrigerator according to claim 12, it is characterized in that: making the side plate of the Machine Room air-supply arrangement side that is positioned at above-mentioned mechanical chamber condenser is the air-supply arrangement erecting bed, make the above-mentioned radiating fin height of aspect ratio of above-mentioned side plate big, between above-mentioned radiating fin portion and above-mentioned Machine Room air-supply arrangement, form the space, form the suction ventilation road.

14. refrigerator according to claim 12, it is characterized in that: the top and the bottom of side plate that make the Machine Room air-supply arrangement side that is positioned at mechanical chamber condenser are towards radiating fin lateral bending song, constitute flange part, making above-mentioned upper flange portion is the air-supply arrangement erecting bed, simultaneously, make above-mentioned downside flange part be fixed part at the support that forms above-mentioned Machine Room.

15. refrigerator according to claim 12, it is characterized in that: the bridge shape erecting bed in the radiating fin portion that strides across above-mentioned mechanical chamber condenser supports above-mentioned Machine Room air-supply arrangement, forms the spatial portion as the suction ventilation road between the radiating fin portion of above-mentioned mechanical chamber condenser and above-mentioned Machine Room air-supply arrangement.

16. refrigerator according to claim 12, it is characterized in that: support above-mentioned Machine Room air-supply arrangement at the erecting bed that covers the refrigerant tube portion that protrudes from the radiating fin of the Machine Room air-supply arrangement side that is positioned at above-mentioned mechanical chamber condenser, the downside of this erecting bed is fixed in the support that constitutes above-mentioned Machine Room.

17. refrigerator according to claim 12 is characterized in that: the radiating fin corresponding surface at the above-mentioned Machine Room air-supply arrangement that coincides with above-mentioned mechanical chamber condenser posts heat-insulating material.

18. refrigerator according to claim 12 is characterized in that: the refrigerant inlet of above-mentioned mechanical chamber condenser is formed on an opposite side with the Machine Room air-supply arrangement.

19. refrigerator according to claim 13 is characterized in that: between Machine Room air-supply arrangement and erecting bed that it is supported, get involved heat-insulating material.

20. refrigerator, it is characterized in that: have refrigerator body, freeze cycle, reach the Machine Room pressure fan, this refrigerator body bight of bottom overleaf forms the Machine Room, this freeze cycle connects compressor, mechanical chamber condenser and evaporimeter by the refrigerant pipe, and this Machine Room pressure fan ventilates forcibly to above-mentioned compressor and above-mentioned mechanical chamber condenser;

Above-mentioned mechanical chamber condenser is made of the intersection fin tube type heat exchanger that a plurality of radiating fins are set at the refrigerant tube side-by-side that forms the shape that crawls;

Above-mentioned Machine Room air-supply arrangement has propeller type fan and guide ring, is arranged on the central portion of the left and right directions of above-mentioned Machine Room, to constituting between the space of the space of mechanical chamber condenser side and compressor side with ventilating;

Above-mentioned propeller type fan is provided with towards the mechanical chamber condenser side in the axial direction projectedly from above-mentioned guide ring;

The inner peripheral surface of the reality of above-mentioned guide ring forms in the axial direction towards the inclined plane of mechanical chamber condenser side expansion.

21. refrigerator according to claim 20 is characterized in that: above-mentioned propeller type fan also axially is being provided with towards compressor side projectedly from above-mentioned guide ring, and the inner peripheral surface of the reality of above-mentioned guide ring becomes also in the axial direction the inclined plane towards the compressor side expansion.

22., it is characterized in that: the condenser that combination is extended towards the left and right directions of above-mentioned Machine Room and form above-mentioned mechanical chamber condenser along the condenser of the direction extension that intersects with this left and right directions according to claim 12 described refrigerators.