CN1098445C

CN1098445C - Structure of machine room of refrigeration

Info

Publication number: CN1098445C
Application number: CN95117144A
Authority: CN
Inventors: 远藤幸广; 柴田耕一; 须藤益二; 山崎进
Original assignee: Hitachi Ltd
Current assignee: Hitachi Ltd
Priority date: 1994-08-30
Filing date: 1995-08-30
Publication date: 2003-01-08
Anticipated expiration: 2015-08-30
Also published as: KR960014860A; JPH0868587A; KR100203999B1; CN1130751A

Abstract

In the machine room of a refrigerator for containing a plate condenser, a main condenser, an evaporating tray, a compressor and a cooling fan, the compressor is installed to the depth side from the condenser, the main condenser, the tray, etc., toward the depth direction, the fan is installed further depth side from the compressor, and a back cover is installed further depth. Accordingly, since the main condenser and the compressor can be cooled with the cooling air from the passages, an efficient cooling structure is obtained. Further, since the back cover can be used to exhaust the heated air diffused by the fan, its cost not only becomes advantageous, but also the heat radiation can be facilitated.

Description

The configuration of refrigerator Machine Room

The present invention relates to a kind of refrigerator, more particularly, relate to a kind of configuration of heat radiation of the refrigerator Machine Room that is used for cooler condenser effectively or compressor.

Usually, for refrigerator, people wish to hold the wasted space of food should be as much as possible little, and it is big as much as possible to hold the useful space of food, it would be desirable that all spaces can both hold food.

The Machine Room is the most useless space, and it is minimum that stress diagram makes it.Owing to this reason, the distance that is contained in condenser in the Machine Room and compressor and their peripheral components should be short to the requirement that the profile that makes them and structure can satisfy efficiently radiates heat.

Join a desk fan in the existing Machine Room of for example in disclosed Japanese patent application (JITSU-KAIHEI) number 5-17483, once advising being equipped with condenser and compressor, so that cooling is installed in condenser and compressor near the Machine Room rear wall.

Figure 24 is the perspective view of the top existing mechanical chamber of mentioning; Figure 25 is a top view, and it depicts emotionally condition of Machine Room shown in Figure 24 hollow air-flow.In Figure 24,32 expression protecgulums, 36 expression condensers, 39 represents compressor, and 40 represents pedestal, and 44 is bonnet, the access road that 41 air communication that are to be used to install condenser 36 and permission cooler condenser 36 are crossed, 42 is fan motor, 45 is dividing plate.

As shown in figure 25, in the Machine Room, condenser 36 is positioned at the front side of refrigerator, is installed in to 42 one-tenth one rows of press 39 and fan motor the rear side of condenser 36.Fan motor 42 blows to compressor 39 with air, and it is in fact parallel with the rear wall of refrigerator perhaps fan motor to be mounted to the rotating shaft that makes fan motor 42.Also be provided with a discharge ring 35 between fan motor 42 and press 39, in fact discharge ring 35 is circular cylinder, and it is coaxial with fan motor 42, and a hole is arranged on the ring, so that with air guide compressor 39.In addition, dividing plate 45 is mounted to rotating shaft quadrature with fan motor 42, thus with the Machine Room be separated into against the wind condenser side Machine Room A and leeward compressor side Machine Room B.

The bonnet 44 that is used to cover the back, Machine Room is positioned at the back of the body of fan motor 42 and press 39.After.Bonnet 44 has an outlet grid 38 in press side Machine Room B.

In above-mentioned prior art, as shown in figure 25, the air that is used for cooler condenser 36 and compressor 39 is blown into by fan motor 42 from the entry grates 33 that is located at the protecgulum 32 that covers the front, Machine Room.When intake air is flowed through access road 41 and high temperature condenser 36 carry out heat exchange.

Then, air is blown to the discharge ring 35 that press 39 flows through dividing plate 45 before.Afterwards, the part air drains into the outside of refrigerator back from the outlet grid 38 of bonnet 44, and remainder flows through the place ahead that exit passageway 46 is drained into refrigerator.

As mentioned above, existing radiating component (fan that promptly is used for cooler condenser and compressor) is placed near Machine Room rear wall part, thereby has following problems:

1. condenser is installed in side against the wind, and compressor is installed in leeward side, therefore, condenser is carried out cooled air be blown to compressor again.In this arrangement, the air themperature before the cooler condenser or the temperature of refrigerator lay down location are higher than the temperature of the air that blows to compressor.From the viewpoint of measures that compressor is cooled off, efficient is low.

2. existing structure comprises two passes: comprise the access road and the exit passageway of condenser, the former is used for from protecgulum importing air and makes it to carry out heat exchange with condenser, and the latter is used for carrying out press cooled hot-air guiding protecgulum.From making viewpoint, should not dwindle the shared space of above-mentioned access road and exit passageway to the most useless space, the Machine Room minimum of refrigerator.It is very little that space in the access road between condenser and the access road or air-flow and condenser carry out the space of heat exchange, will cause in the access road gas-flow resistance very high, thereby can not make heat radiation fully.This is one of problem.

, must improve for this reason, make it have bigger torque,, perhaps, exit passageway be dwindled, access road broadening to increase airflow rate to fan motor.

But, if airflow rate is improved, will produce bigger noise during the fan rotation, cause the indispensable measure that prevents noise to weaken.

Make access road broadening simultaneously so that bigger condenser is installed if people attempt exit passageway dwindled, be difficult to make condenser to extend to both sides according to the gas-flow resistance in the exit passageway.For this reason, condenser can only extend upward.The problem of bringing therefrom is to have to increase the wasted space of refrigerator.

3. air is blowed to compressor and make before its further intensification, air and condenser carry out heat exchange and heat up, and hot-air is discharged and blown on user's the pin from protecgulum.When walking close to refrigerator and open the door, the user just become problem.

4. will be in order to introduce air so that the entry grates of cooler condenser and compressor be placed near outlet grid part, so that blow out warm air.Entry grates may be in the same place with the outlet grid in short circuit, and consequently entry grates is introduced the warm air that blows out in the circulation again, and air themperature increases gradually, thereby the cooling performance of condenser and compressor is descended.

5. it is parallel with the rear wall of refrigerator the fan motor of cooler condenser and compressor to be mounted to the rotating shaft that makes fan, above-mentioned rotating shaft and the circulating current quadrature that flows to the outlet grid from entry grates.This adverse influence has further increased the resistance of air-flow in the machine room, thereby the input power of fan motor is increased, and has increased the power consumption of refrigerator.

Put it briefly, according to design of the present invention, configuration by means of the refrigerator Machine Room can address the above problem, the configuration of this refrigerator Machine Room comprises: a condenser, evaporator plate, a compressor and a cooling fan, wherein compressor is placed on apart from the front, Machine Room than condenser and the low position of evaporator plate, cooling fan is placed on the low position of ratio piston compressor, and makes the position of bonnet minimum, thus cooling compressor and condenser effectively.Specifically, all or part of of condenser is installed on the evaporator plate, this condenser is a plate-type condenser, and it constitutes a passage, thereby the wasted space of refrigerator is dwindled.

In addition, condenser has the fin of the incision that is similar to drawing, and the appropriate position is processed with the long hole of some 4mm at least on fin plate, because of drawing, can dispel the heat effectively.

Moreover condenser forces cooling by the air that imports from the entry grates that is positioned on the protecgulum of Machine Room, and condenser is by the air cooling that imports from the ingate that is arranged on the base that condenser is installed simultaneously, therefore, and cooling compressor and condenser equally effectively.

In addition, other condenser that utilizes the plate-type condenser sheet and be positioned at this plate-type condenser top constitutes an air duct, therefore, has saved the space, has reduced cost.

Also have, in order to form air duct, the end of the protuberance of condenser is faced with each other, therefore, do not need special passage.

In addition, fan guard is contained on the parts of the bonnet of cooling fan, and the air that has heated up that is blown out by cooling fan flows out along bonnet, therefore, even refrigerator is contained near the wall part, can prevent that still the air that blows out from damaging wall.

In addition, separate, bonnet is contained between cooling fan and the fan guard for making the Machine Room and the external world, and, also be processed with the discharge ring of cooling fan on the bonnet, therefore, can cut off the noise that the Machine Room produces.

Have, the air that is used for having heated up is delivered to the air duct that is located at the exit passageway on refrigerator two rear sides along bonnet and is located at bonnet again, therefore, the hot-air of discharging from the Machine Room is flowed towards upper edge refrigerator top board.

Say that again the discharge ring of cooling fan is located on the bonnet, therefore refrigerator is more cheap.

In addition, bonnet is processed into the air that makes in the Machine Room that blows out by cooling fan flows to formed exit passageway in the space that the machine compartment wall by bonnet and refrigerator two rear sides constitutes, therefore, refrigerator can be placed near above-mentioned wall place.

In addition, the hole that is used for the pipe on the metal sheet that caulked constitutes plate-type condenser is to be shaped by the mode of cutting off the end, and hole length is at least 4mm, and the zigzag pipe is linked to each other with sheet metal, thereby makes condenser, so just can dispel the heat effectively.

Moreover, every fin of the incision of plate-type condenser comprises that one becomes 0 ° of rising part and a plane parallel with plate-type condenser to 45 with this plate-type condenser, the root of fin that is similar to the incision of drawing is in the center between the caulked stationary pipes pipe adjacent with this stationary pipes with caulked, therefore, the air drag of condenser is low.

Also have, the number of fin against the wind of the fin of the incision that is similar to drawing of plate-type condenser is less than the leeward fin number of the fin of the incision that is similar to drawing successively, therefore, can dispel the heat effectively.

In addition, the size of the plate-type condenser incision fin that is similar to drawing against the wind is successively greater than the size of the leeward incision fin that is similar to drawing, so, improved the air flow condition.

Say that again the condenser with two-ply is provided with the incision fin of the similar drawing of some plates that swell toward each other in above-mentioned plate inboard inwardly, has therefore improved heat exchanger effectiveness.

Aforesaid operations mechanism working condition is as follows:

Because with the induced draught fan of cooling fan as press, compressor and condenser can obtain the cooling air from their cooling ducts separately at the press leeward side.Because the cooling air flows through condenser and the formed passage of attaching parts, the fin that above-mentioned cooling air can form with any fine finishining of main condenser carries out sufficient heat exchange.

The air that has heated up that blows to bonnet by means of cooling fan flow through the formed air duct of bonnet before the exit passageway that enters on the refrigerator main body rear side, discharge the refrigerator main body then.

Owing to be equipped with and the identical condenser of refrigerator width that is contained in its front side in the Machine Room; Compressor and fan also are housed, and the back quadrature of the rotating shaft of fan and refrigerator and the condenser back on the refrigerator rear side are arranged in a row; An ingate is arranged being used to below the press to support on the base of press; Other has a circular port or short cylindrical shape discharge ring, and this discharge ring is coaxial with fan shaft, and it is positioned on the bonnet that covers the refrigerator back and towards fan; Be positioned at the refrigerator back in addition and have the fan guard that exports grid,, before the outlet grid of from behind fan guard is discharged, carry out heat exchange from refrigerator the place ahead leaked-in air with condenser by means of fan so that cover the discharge ring on the bonnet.Because the rotating shaft of fan motor and entry grates and outlet grid quadrature, the effect of deaeration is fine, the resistance minimum of air-cooled condenser, the power minimum of supply fan motor.Because condenser can extend along the whole width of refrigerator, can keep condenser that enough radiating effects are arranged.Though compressor is by carrying out the heat-exchanged air cooling with condenser, because compressor mainly cools off by the ingate leaked-in air from the base that is positioned at the compressor below, because condenser can fully dispel the heat, the result can make compressor be cooled off fully.

Describe the present invention below in conjunction with accompanying drawing, will have gained some understanding to above-mentioned purpose of the present invention and other purposes, advantage, working method and novel characteristics by describing.

Can do more fully to describe to the present invention below in conjunction with accompanying drawing, wherein:

Fig. 1 is the perspective view of first embodiment of refrigerator of the present invention;

Fig. 2 is the side view of the partly cut-away of refrigerator shown in Figure 1;

Fig. 3 is a top view, and it shows the air mobility status in the refrigerator Machine Room among Fig. 1;

Fig. 4 is a thin portion side view, and it shows cooling fan in the Machine Room and attaching parts among Fig. 1;

Fig. 5 is a side view, and it shows the type of cooling of refrigerator press;

Fig. 6 is a rearview, and it shows second embodiment of refrigerator of the present invention Machine Room;

Fig. 7 is a thin portion side view, and it shows cooling fan in the Machine Room and attaching parts among Fig. 6;

Fig. 8 is the top view and the side view of the condenser of second embodiment;

Fig. 9 is the side view of main condenser caulked among second embodiment;

Figure 10 is for the side view of the 3rd embodiment of main condenser of the present invention, and is wherein that two or more plate-type condensers are stacked;

Figure 11 is for the side view of the 4th embodiment of main condenser of the present invention, and is wherein that two or more plate-type condensers are stacked;

Figure 12 is the cross-sectional side view that is contained in the main condenser shown in Figure 11 in the refrigerator main body, and arrow represents to cool off the mobility status of air among the figure;

Figure 13 is the top view of the 5th embodiment of main condenser of the present invention;

Figure 14 is top view and the side view of the 6th embodiment of main condenser of the present invention;

Figure 15 is a perspective view, and it illustrates the mated condition of two blocks of heat sinks of main condenser;

Figure 16 is a perspective view, and it illustrates the situation that two blocks of heat sinks of main condenser face with each other;

Figure 17 is top view and the side view of the 7th embodiment of main condenser of the present invention;

Figure 18 is the cross-sectional side elevation view of embodiment of fin shape that is similar to the incision of drawing;

Figure 19 is the cross-sectional side elevation view of embodiment of the another kind of shape of fin that is similar to the incision of drawing;

Figure 20 is the cross-sectional side elevation view of embodiment of another shape of fin that is similar to the incision of drawing;

Figure 21 is the top view of the 8th embodiment of main condenser 6 of the present invention;

Figure 22 is the cross-sectional side view that is loaded on the main condenser of the Figure 21 in the refrigerator main body, and wherein arrow represents to cool off the flow condition of air;

Figure 23 is a cross-sectional side view, and it illustrates the velocity boundary layer of the main condenser of Figure 21;

Figure 24 is a perspective view, and it illustrates room, disclosed Machine Room in the existing document;

Figure 25 is a top view, and it illustrates the mobility status of air in the Machine Room shown in Figure 24.

Describe first and second embodiment of the present invention in detail below with reference to Fig. 1 to Fig. 9; Fig. 1 is the perspective view of first embodiment of refrigerator of the present invention; Fig. 2 is the side view of refrigerator shown in Figure 1 partly cut-away; Fig. 3 is a top view, and it shows the air mobility status in the Machine Room of refrigerator among Fig. 1; Fig. 4 is the detailed view of refrigerator critical piece among Fig. 1; Fig. 5 is a side view, and it shows the type of cooling of refrigerator compressor; Fig. 6 is a rearview, and it illustrates second embodiment of refrigerator of the present invention Machine Room; Fig. 7 is a thin portion side view, and it shows cooling fan in the Machine Room and attaching parts among Fig. 6.

Referring to Fig. 1 and 2, refrigerator has a casing 1 and has the protecgulum 2 of air being introduced the entry grates 3 of Machine Room.This refrigerator also has a header board 4, and its front bottom end has an ingate 5.In addition, refrigerator also comprise the water that main condenser 6, evaporation are liquefied as by the frost of cooler (not shown) plate-type condenser 7, store evaporation of water device dish 8, compressor 9 that is liquefied and the base 10 that compressor 9 is installed.Base 10 has an ingate 11 below compressor 9.Refrigerator also comprises fan motor 12, is installed in the cooling fan 13 on the fan motor 12, takes the bonnet 14 of choma 15 out of, covers the fan guard 16 and the outlet grid 17 of discharge ring 15.

Main condenser 6 is surrounded fully by housing 18, housing 19 and access road 20, and housing 18 is at the top of main condenser, and the sidewall 1a that housing 19 is used to prevent casing 1 is in its both sides bending, and access road 20 is made of evaporator plate 8.With fan motor be mounted to make fan motor 12a in fact with the rear wall 1b quadrature of casing 1.The discharge ring 15 of bonnet 14 is coaxial with fan motor 12a, and discharge ring 15 extends towards the refrigerator rear wall also taperedly.Fan guard 16 be placed in refrigerator rear wall 16 on the conplane plane.Back corner seamed edge 21 between sidewall 1 and the refrigerator rear wall 1b each side at the refrigerator rear portion constitutes towards the surface that tilts, therefore, even with the rear wall of refrigerator near the Machine Room wall, also waste gas can be discharged the Machine Room.

Shown in Fig. 2 and 3, take above-mentioned configuration, before flowing to access road 20, flow through the ingate 5 of header board 4 from entry grates 3 inhaled airs of protecgulum 2.When air flow through access road 20, air and main condenser 6 carried out heat exchange, and then, before the outlet grid 17 from fan guard 16 (see figure 3)s was discharged to the outside, Machine Room 22, air flow through discharge ring 15.As shown in Figure 5, ingate 11 leaked-in airs by base 10 are cooling compressor before being discharged to the outside 22, Machine Room from outlet grid 17, and this is more effective than using the air cooling compressor that carries out after the heat exchange with main condenser 6.

Air so flows and can make the moving flow resistance minimum of Machine Room hollow air-flow.This means that the input power of supplying with fan motor can be minimum, therefore, can reduce the power consumption of refrigerator itself, and can make main condenser 6 heat radiations more effective.

The second embodiment of the present invention is described below, sees also Fig. 6 and 7.There is shown guide plate 24 at this two width of cloth, it is placed along the bonnet on the refrigerator rear wall side 14, so that make housing 17 that air flows through fan guard 16 be discharged to back corner seamed edge 21 places of refrigerator box body rear wall 1b.Make an end 24a and the refrigerator rear wall 16 of guide plate 24 in the same plane.In this configuration, though with the rear wall of refrigerator near machine compartment wall, guide plate 24 also can be got rid of air to be discharged.In other words, the radiating effect of condenser is not less than any other configuring condition.The air that guide plate 24 will heat up is discharged to back corner seamed edge 21 through the waste heat passage and arrives the refrigerator top again, and above-mentioned waste heat passage is a plane that reaches on back corner seamed edge 21 (not shown).In addition, the waste heat passage links to each other with formed air duct 25 on the bonnet 14, therefore, even refrigerator near the machine room wall, also can form the passing away of discharging hot-air reliably.

Describe the main condenser 6 that the present invention uses below in detail.

At first, heat sink 61 has been shown in Fig. 8 and 9, crooked coolant hose 62, the hole 64 that is used for the end that has cut 63 of caulked and is used for the incision of caulked.As shown in Figure 9, be fixed on the heat sink made from metal sheet 61 by caulked or the similar approach coolant hose 62 with bending, make the most surfaces of cooling tube contact with heat sink 61, the sweep of pipe places on the heat sink 61.After the coolant hose caulked finished, main condenser 6 is brushed paint, so that the thermal contact resistance of heat sink 61 and crooked coolant hose 62 is little.The length that cuts the hole 64 of formed each incision in end on heat sink 61 is at least 4mm.

Adopt said structure, the cooling air that flows to main condenser 6 is flowing to coolant hose, so that flow along heat sink 61 up with before flowing through hole 64 outflows that cut out down.This will cause that suitable air turbulence is to increase thermal conductance.The length in the hole of cutting is at least 4mm, and such hole is difficult to be stopped up by dust.Even some holes are blocked, because most of heat-transfer surfaces are towards air, the duration of work heat conductivility reduces hardly.Because main condenser 6 does not have welding portion, only need energy seldom just can make, so producing cost is low.

Figure 10 and 11 shows the third embodiment of the present invention and the 4th embodiment, and is in these embodiments that two or more plate-type condenser 6 is stacked.Figure 12 is the cross-sectional side view that is contained in the heat exchanger that is used to dispel the heat shown in Figure 11 in the refrigerator main body, and wherein arrow represents to cool off the mobility status of air.In the 3rd embodiment shown in Figure 10, at least two main condensers 6 have heat sink 61 respect to one another and the pipe 62 that is loaded on plate 61 outsides.The interval of two plates 61 is at least 4mm, their end part aligning.

Otherwise in the 4th embodiment shown in Figure 11, among Figure 10 in the heat sink 61 of main condenser 6 one staggers at edge (left end among the figure) against the wind with another piece.When stagger in the end of heat sink 61, above-mentioned pipe interlocks always.This ventilation effect further strengthens air turbulence, thereby can further improve thermal conductivity.Because the edge staggers against the wind, the cooling air flows through the hole 64 of incision earlier, and then in all flowing at interval, thereby impel further turbulent flow of air, thus heat conductivility improved.

The effect of third and fourth embodiment is described below with reference to Figure 12.Cooling blast flows between the plate that heats up because of plate heat radiation against the wind, and at the air flow direction pipe in the plate outside so that flow through cut-out hole 64 up and down, cooling blast is flow to effectively and flow out.This ventilation effect has suitably promoted the turbulent flow of air, thereby heat conduction is strengthened.When the interval between two plates was not less than 4mm, this was difficult to be stopped up by dust at interval.Because dust stops up above-mentioned interval hardly, during operation, heat conductivility can reduce hardly.

Figure 13 is the top view of the 5th embodiment of main condenser 6 of the present invention.The line of cut of the superimposed heat sink 61 of 65 expressions among the figure.Line of cut 65 extends to the whole width of heat sink 61, and like this, the plate 61 that cuts out on the appropriate location of the heat sink 61 of above-mentioned main condenser 6 is parallel to crooked coolant hose 62.At line of cut 65 places heat sink 61 is amounted to abreast towards the both sides of not managing 62, and made it to be not less than at interval 4mm.Line of cut 65 is moved towards against the wind.The 4th embodiment that above-mentioned two blocks of superimposed heat sinks 61 can be used for the described main condenser 6 of Figure 11.If with 2 or be used for refrigerator greater than 2 even numbered blocks heat sink 61, this superimposed heat sink is favourable, and their making is easily without welding pipe.Have same intervals if above-mentioned pipe curved, this superimposed heat sink 61 is more favourable, and the edge staggers as shown in Figure 11 against the wind again, obviously can obtain the effect of the 4th embodiment in Figure 11.

Figure 14 represents top view and the side view of the 6th embodiment of main condenser 6 of the present invention.In the 6th embodiment, the left seamed edge of the right seamed edge of the heat sink 61 among the 5th embodiment shown in Figure 13 becomes flange shapely and stretches out up towards a side relative with the fixing tube side.Ingate 5 among Figure 14 is folding towards the direction that does not have crooked coolant hose 62 at conduplicatio plate line of cut 65 places, that is to say, extends upwardly to folding with the direction of the spaced and parallel that is not less than 4mm towards rising flange 67.This two blocks of superimposed heat sinks 61 can be used among the 4th embodiment of the described main condenser 6 of Figure 11.When making main condenser 6, raised lip is assembled together as shown in figure 15, or as shown in figure 16, two blocks of heat sinks 61 is being faced with each other.The advantage that the heat sink 61 of this structure has is that raised lip 67 does not play booster action, only as the partition that keeps the interval between the fin 61, and raised lip 67 itself also is formed in the part of the access road that forms on the refrigerator main body, therefore, it is simple that access road is made, and cost is low.

Figure 17 shows the top view of the 7th embodiment of main condenser 6 of the present invention.In the 7th embodiment, the heat sink 61 in embodiment illustrated in fig. 8 has the fin 66 of the incision that is similar to drawing, has the length of drawing to be at least the punching of 4mm on the fin.Towards upwarping, make outstanding area only increase panel thickness on the direction between the pipe fitting fin 66 of this incision that is similar to drawing.In addition, the root of the fin 66 of every incision that is similar to drawing is in the center between the caulked stationary pipes pipe adjacent with the said fixing pipe with caulked.This incision fin 66 that is similar to drawing is arranged to zigzag.Figure 18,19 and 20 cross-sectional elevational view for the fin 66 of the difform incision that is similar to drawing among each embodiment; Shown in Figure 18 is two to select the fin 66 that is similar to the incision of drawing toward the outstanding arc of direction; Shown in Figure 19 is the fin 66 of a kind of incision of cutting off in the fin center that is similar to drawing shown in Figure 180; Shown in Figure 20 be one section top will cutting off among Figure 19 by with the fin 66 of the incision that is similar to drawing of another section equidirectional bending.The fin 66 of the incision that is similar to drawing of different shape all has following characteristics; 61 one-tenth 0 ° of rising part and heat sink being every fin are to 45; With fin perk and when making it bending from heat sink 61, its planar section is in fact parallel with the heat sink surface.

The advantage of the heat sink 61 of this structure is that the fin 66 that is similar to the incision of drawing makes the cooling air shunting of flowing along heat sink 61.Identical with the speed edges split layer of cooling air, its temperature boundary layer also divides, thereby can improve heat conductivility.This heat sink 61 also has following advantage: the length in the hole of going out is not shorter than 4mm at least, and dust is difficult to plugging hole.Because dust is plugging hole hardly, the duration of work heat conductivility reduces hardly.

Figure 21 is the top view of the 8th embodiment of main condenser 6 of the present invention.In the 8th embodiment, with in the fin 66 of the incision that is similar to drawing embodiment illustrated in fig. 17 against the wind the fin of side be processed into fin greater than leeward side.The fin 66a of the incision that is similar to drawing against the wind and the fin 66b of the leeward incision that is similar to drawing have been shown among Figure 21.In the 8th embodiment, the width of the incision fin 66a of drawing against the wind is wideer than the width of the incision fin 66b of leeward drawing successively, and the quantity of the incision fin 66a of drawing is against the wind lacked than the quantity of the incision fin 66b of leeward drawing successively.

Adopt this structure, because the reason of fin, the hole count of side is less than the hole count of leeward side against the wind.Be mixed in the airborne impurity of cooling (for example dust) and do not stop up the degree of reliability in hole against the wind than the degree of reliability height that does not stop up leeward hole.Even main condenser 6 beginnings are stopped up by impurity, it is less that the duration of work heat conductivility is reduced.

Figure 22 is the cross-sectional view that is loaded on the main condenser 6 in the refrigerator main body, expresses the mobility status of cooling air among the figure with arrow.Figure 23 shows the velocity boundary layer among Figure 22.

Below with reference to Figure 22 the effect of this structure is described.Because the radiant heat of heat sink 61 makes the cooling atmosphere temperature rising against the wind that flows in the space between heat sink 61.Cooling air against the wind also flows through the parallel fin that stretches out 66 with plate inwardly before flowing out heat sinks 61 in the formed hole 64 that cuts out that is used for caulked from hole that the incision fin 66 that is similar to drawing forms or from the end that cut 63.The air-flow in heat sink 61 outsides flows through coolant hose and flows through and cut that end 63 is formed to be used for cutting out hole 64 or flowing through the hole that the incision fin 66 that is similar to drawing forms of caulked up with before dirty.Consequently cool off the inboard of air inflow heat sink 61, flow out the outside of heat sink again.Compare this partition effect and more can promote air turbulence with embodiment illustrated in fig. 12, therefore, can improve heat conductivility.Make the cooling air shunting of flowing along heat sink 61 surfaces by means of the incision fin 66 that is similar to drawing.Identical with the speed edges split layer of cooling air, its temperature boundary layer also divides, and therefore, can further improve heat conductivility.

Identical with the sheet separation, the formed hole, end that cuts that is used for caulked at least is not shorter than 4mm with the hole that the incision fin that is similar to drawing forms, and therefore, dust is difficult to stop up these holes.Because these holes are stopped up by dust hardly, the duration of work heat conductivility reduces hardly.

The main condenser 6 that is used for refrigerator of the present invention has following advantage.The initial performance of main condenser 6 of the present invention and Wound-rotor type condenser do not have difference, and after the latter stopped up by fine dust, the performance of duration of work can reduce, and in addition, main condenser manufacturing expense of the present invention is low.

As described up to now, the present invention has many-sided effect.Cooling fan is installed in the downstream of compressor, can makes air flow through the passage of cooling compressor and cooler condenser respectively.In other words, because compressor is not only cooled off also by cooling off from opening the fresh air of going at the air intake orifice flow of base bottom by the air that flows through condenser, so can cool off condenser and compressor effectively, so the problem that the front proposed can both be resolved.If cooling fan is placed near the bonnet part, also the air that has heated up that is blown out by cooling fan can be discharged.

In addition, the present invention does not need any special installation just can constitute cooling air channels, therefore, can effectively utilize the space of machine room, and can reduce expense greatly.

Moreover the present invention can make refrigerator back and Machine Room wall seem as being integral, but does not damage wall.

At last, the present invention can make main condenser have high efficiency.

Claims

1. the configuration of a refrigerator Machine Room, comprise a condenser, an evaporator plate, one compressor and a cooling fan, it is characterized in that compressor is placed on position after leaning on than condenser and evaporator plate apart from the Machine Room face, cooling fan is placed on position after ratio piston compressor leans on, bonnet is placed on position after leaning on most.

2. the configuration of refrigerator as claimed in claim 1 Machine Room is characterized in that all or part of of condenser is loaded on the evaporator plate top, and this condenser is made of plate-type condenser.

3. the configuration of refrigerator as claimed in claim 1 Machine Room is characterized in that condenser has the incision fin that is similar to drawing, and the appropriate position is processed with the long hole of some 4mm at least on fin plate.

4. the configuration of refrigerator as claimed in claim 1 Machine Room, it is characterized in that condenser forces cooling by the entry grates leaked-in air from the protecgulum of Machine Room, this condenser is also by the ingate leaked-in air cooling on being opened in the base that is used for installing condenser.

5. the configuration of refrigerator as claimed in claim 1 Machine Room, other condenser that wherein utilizes the plate-type condenser sheet and be positioned at this plate-type condenser top constitutes an air duct.

6. the configuration of refrigerator as claimed in claim 1 Machine Room is characterized in that the end of the protuberance of condenser is faced with each other, so that form air duct.

7. the configuration of refrigerator as claimed in claim 1 Machine Room also comprises a fan guard that is contained on the parts of the bonnet of cooling fan, it is characterized in that being flowed out along bonnet by the air that has heated up that cooling fan blows out.

8. the configuration of refrigerator as claimed in claim 1 Machine Room is characterized in that bonnet is contained between cooling fan and the fan guard, so that the machine room and the external world are separated, and also is processed with the discharge ring that is used for cooling fan on the bonnet.

9. the configuration of refrigerator as claimed in claim 1 Machine Room is characterized in that the air that is used for having heated up delivers to the air duct that is located at the exit passageway on refrigerator two rear sides along bonnet and be located at bonnet.

10. the configuration of refrigerator as claimed in claim 1 Machine Room is characterized in that the discharge ring of cooling fan is located on the bonnet.

11. the configuration of refrigerator as claimed in claim 1 Machine Room is characterized in that bonnet is processed into the air that makes in the Machine Room that blows out by cooling fan flows to formed exit passageway in the space that the machine compartment wall by bonnet and refrigerator two rear sides constitutes.

12. the configuration of refrigerator as claimed in claim 1 Machine Room, the hole that it is characterized in that being used for the pipe on the metal sheet that caulked constitutes plate-type condenser is to be shaped by the mode of cutting off the end, hole length is at least 4mm, and the zigzag pipe is linked to each other with sheet metal, thereby makes condenser.

13. the configuration of refrigerator as claimed in claim 3 Machine Room, the every fin that it is characterized in that the incision of plate-type condenser has the root of the fin of the incision that becomes 0 ° of rising part to 45, the plane parallel with plate-type condenser with this plate-type condenser and be similar to drawing, and above-mentioned root is in the center between the caulked stationary pipes pipe adjacent with this stationary pipes with caulked.

14. the configuration of refrigerator as claimed in claim 3 Machine Room is characterized in that the number of fin against the wind of fin of the incision that is similar to drawing of plate-type condenser is less than the leeward fin number of the fin of the incision that is similar to drawing successively.

15. the configuration of refrigerator as claimed in claim 3 Machine Room, the size that it is characterized in that the plate-type condenser incision fin that is similar to drawing against the wind are successively greater than the size of the leeward incision fin that is similar to drawing.

16. the configuration of refrigerator as claimed in claim 3 Machine Room, the condenser that it is characterized in that having two-ply be provided with some in above-mentioned plate inboard the incision fin that is similar to drawing of the plates of protuberance toward each other inwardly.