CN100513964C

CN100513964C - Heat exchanger

Info

Publication number: CN100513964C
Application number: CNB2006100015996A
Authority: CN
Inventors: 吴光宪; 林弘永
Original assignee: HANNA AIR CONDITIONER CO Ltd
Current assignee: Hanon Systems Corp
Priority date: 2005-01-24
Filing date: 2006-01-24
Publication date: 2009-07-15
Anticipated expiration: 2026-01-24
Also published as: CN1811317A; KR20060085573A; KR101047428B1

Abstract

The present invention relates to a heat exchanger, in which inlet and outlet side heat exchange parts are communicated with each other and have the same refrigerant flowing direction by communicating pairs of cups with each other which are located at a predetermined area of the center of the heat exchanger, thereby being easily reduced in size, providing uniform surface temperature distribution and improving heat exchange efficiency by reducing the preponderance and the pressure drop rate of refrigerant and inlet and outlet pipes being easily arranged forward.

Description

Heat exchanger

Technical field

The present invention relates to a kind of heat exchanger, relate more specifically to a kind of like this heat exchanger, wherein inlet side and outlet side heat exchange section are to flow mutually to be communicated with, and has identical flow of refrigerant direction by the mobile mutually connection of paired cup portion that makes the presumptive area that is positioned at these heat exchanger central authorities, thereby by stressing property (preponderance) and the pressure drop rate that reduces refrigerant, the surface temperature distribution that can easily reduce size, makes heat exchanger evenly and improve heat exchanger effectiveness, and easily forward direction is arranged inlet tube and outlet.

Background technology

Usually, heat exchanger comprises the flow channel that is used to allow heat exchange medium to flow within it, thereby heat exchange medium and extraneous air carry out heat exchange.Heat exchanger is used in the various airconditions, and uses with various forms according to different service conditions, as evaporimeter, condenser, radiator and heater.

Structure type according to refrigerant pathway is classified the evaporimeter of various heat exchangers.Representative is the snake type that becomes multilayer to form by with a folding canal curvature, and the cascade type that is formed by matrix (dimple type) stack of plates.In addition, also introduced the evaporimeter that adopts a plurality of Foldable tubes recently.

Japanese Utility Model 7-12778 communique discloses the evaporimeter as the example of this conventional evaporator.With reference to Fig. 1, evaporimeter 1 comprises many pipes, and wherein every pipe is all by forming in conjunction with two boards 11, and these plates have paired cup portion 12 with lower end in the top.Described many pipes are stacked to be multilayer.

By the many stacked evaporimeters that form of pipe are comprised: the case of Xing Chenging (tank) 2 and 3 at an upper portion thereof and at a lower portion thereof; And the inlet tube 4 and the outlet 5 that are arranged on sidepiece, thereby be used for flowing to and flowing out of refrigerant.

Therefore, forming inlet side heat exchange section 20a with the inlet tube 4 mobile part places that are communicated with, and forming oral-lateral heat exchange section 20b with the outlet 5 mobile part places that are communicated with.

And fluid connected component 25 is installed in part place evaporimeter, relative with inlet tube 4 and outlet 5, is used to make inlet side heat exchange section 20a and outlet side heat exchange section 20b to flow and is communicated with.

Simultaneously, partition wall 26 in a row is formed in the top box 2, is used for inlet side heat exchange section 20a and outlet side heat exchange section 20b are separated into a plurality of heat exchange area 21 to 24, and is inserted with fin 15 in order to promote heat exchange between pipe 10.

With reference to Fig. 2 the mobile of refrigerant of evaporimeter 1 is described below.

The refrigerant that is introduced in by inlet tube 4 in the top box 2 of inlet side heat exchange section 20a flows downward being separated first heat exchange area, 21 places that wall 26 separates, and moves to then in the nowel 3.The refrigerant that flow in the nowel 3 return at nowel 3 places, upwards flow and move in the top box 2 in second heat exchange area 22.

Refrigerant through inlet side heat exchange section 20a is introduced in the top box 2 of outlet side heat exchange section 20b by fluid connected component 25.

The refrigerant that is introduced in the top box 2 of outlet side heat exchange section 20b flows downward being separated the 3rd heat exchange area 23 places that wall 26 separates, and moves in the nowel 3.The refrigerant that flow in the nowel 3 return at nowel 3 places, upwards flow at the 4th heat exchange area 22 places and move in the top box 2.Afterwards, refrigerant is discharged to the outside by outlet 5.

Simultaneously, first heat exchange area 21 is such zones, and in this zone, the refrigerant of top box 2 flows downward along pipe 10, and moves in the nowel 3.At this moment,, increase gradually in first stage of introducing refrigerant so be introduced in the volume of every refrigerant in the pipe 10, and in second stage, reduce gradually on the flowing refrigerant because gravity acts in top box 2.

Second heat exchange area 22 is such zones, and in this zone, the refrigerant that is introduced in the nowel 3 from first heat exchange area 211 upwards flows, and be introduced in the top box 2 along pipe 10.Because effect of inertia on flowing refrigerant in nowel 3, reduces gradually in first stage of introducing refrigerant so be introduced in the volume of every refrigerant in the pipe 10, and increases gradually in second stage.

The 3rd heat exchange area 23 is such zones, in this zone, flows downward along pipe 10 by the refrigerant that fluid connected component 25 is introduced in the top box 2 from second heat exchange area 22, and moves in the nowel 3.At this moment,, increase gradually in first stage of introducing refrigerant so be introduced in the volume of every refrigerant in the pipe 10, and in second stage, reduce gradually on the flowing refrigerant because gravity acts in top box 2.

The 4th heat exchange area 24 is such zones, and in this zone, the refrigerant that is introduced in the nowel 3 from the 3rd heat exchange area 23 upwards flows, and be introduced in the top box 2 along pipe 10.Because effect of inertia on flowing refrigerant in nowel 3, reduces gradually in first stage of introducing refrigerant so be introduced in the volume of every refrigerant in the pipe 10, and increases gradually in second stage.

Therefore, because the unshapeliness of refrigerant, evaporimeter 1 can produce serious surface temperature difference, and less or when the air through evaporimeter 1 was a small amount of air-flow, surface temperature difference was even more serious at the flow of refrigerant.That is to say,, formed cold part in the pipe 10 that the cryogen flow momentum is bigger therein, and form superheat section in the less pipe of cryogen flow momentum therein in inlet side heat exchange section 20a and outlet side heat exchange section 20b inside.

And, in above-mentioned fluid channel structure, cross the position much at one that cold part and superheat section are formed on inlet side heat exchange section 20a and outlet side heat exchange section 20b.The cold part of mistake that the air of the cold part of mistake of most of process outlet side heat exchange section 20b all passes through inlet side heat exchange section 20a, and the air of the superheat section of most of process outlet side heat exchange section 20b all passes through the superheat section of inlet side heat exchange section 20a.Therefore, the not heat exchange equably of air of process between all pipes 10, thus the Temperature Distribution difference of the air of discharging becomes more serious.In addition, the problem that on the surface of evaporimeter, can occur freeze, and also air-conditioning system becomes unstable crossing cold part.In addition, at superheat section, because the air of discharging is not normally cooled off and dehumidifies, the humid air that temperature has raise just is introduced in the automobile, and is uncomfortable thereby the occupant can feel.

Owing to be arranged separately in effect place, case 2 ends, that be used to make inlet side heat exchange section 20a and the mobile fluid connected component 25 that is communicated with of outlet side heat exchange section 20b, increased the pressure drop rate of refrigerant, thereby cause the deterioration of heat exchange performance, and hindered the miniaturization of hot vaporizer.

And traditional evaporimeter has another problem, that is, because inlet tube 4 and outlet all are arranged in a side place of evaporimeter 1, be difficult to they forward direction settings.

Summary of the invention

Therefore, in order to solve the above shortcoming of prior art, the object of the present invention is to provide a kind of heat exchanger, wherein, inlet side heat exchange section and outlet side heat exchange section flow mutually and are communicated with, and has identical flow of refrigerant direction by the mobile mutually connection of paired cup portion that makes the presumptive area that is positioned at these heat exchanger central authorities, thereby by stressing property and the pressure drop rate that reduces refrigerant, can easily reduce size, make the even and raising heat exchanger effectiveness of surface temperature distribution, and by complementally carry out heat exchange mutually between inlet side heat exchange section and outlet side heat exchange section, easily forward direction is arranged inlet tube and outlet.

To achieve these goals, according to the invention provides a kind of heat exchanger, it comprises: many pipes, every pipe all forms by a pair of plate is mutually combined, this pipe has within it two discrete flow channels forming, be plugged in separation projection (bead) between described two flow channels and paired cup portion, described cup portion in a row is formed on the place, top and bottom of described pipe in the mode with each flow communication, thereby described cup portion interconnects formation top box and nowel; And inlet tube and outlet, they respectively with flow communication, be used to allow the inflow and the outflow of refrigerant, it is characterized in that, one inlet side heat exchange section is communicated with inlet tube is mobile at the pipe place, one outlet side heat exchange section is communicated with outlet is mobile at the pipe place, fluid connecting device is suitable for by their being flowed mutually be communicated with so that described inlet side heat exchange section and outlet side heat exchange section have the mode of identical flow of refrigerant direction, thereby the presumptive area that makes the described case that described inlet tube and/or outlet are installed on it flows mutually and is communicated with, and a plurality of dividing plates are divided into a plurality of heat exchange area with described inlet side heat exchange section and outlet side heat exchange section, and close and form these dividing plates by this way by the cup portion on the described fluid connecting device two ends of being positioned at with making diagonally opposing corner, so that described heat exchange area, the mobile mutually part that is communicated with is overlapped by described fluid connecting device.

Description of drawings

By below in conjunction with the detailed description of accompanying drawing to the preferred embodiment of the present invention, will understand above-mentioned and other purpose of the present invention, feature and advantage, in these accompanying drawings:

Fig. 1 is the stereogram of conventional heat exchanger;

Fig. 2 is the view of the flow of refrigerant of expression conventional heat exchanger;

Fig. 3 is the stereogram according to the heat exchanger of first preferred embodiment of the invention;

Fig. 4 is the front view according to the heat exchanger of first preferred embodiment;

Fig. 5 is the stereogram of the state that separates with heat exchanger according to this first preferred embodiment of expression common tube;

Fig. 6 is the stereogram that expression has the state that the pipe of fluid communication passageway separates with heat exchanger according to this first preferred embodiment;

Fig. 7 is the stereogram of the state that separates with heat exchanger according to this first preferred embodiment of expression dividing plate;

Fig. 8 is the figure that the pressure drop rate of expression heat dissipation capacity and refrigerant changes along with the ratio of the quantity of row's number of the pipe with fluid communication passageway and all pipes;

Fig. 9 is the view of expression according to the flow of refrigerant of the heat exchanger of this first preferred embodiment;

Figure 10 is the view of expression according to the refrigerant distribution in the heat exchanger of this first preferred embodiment;

Figure 11 is the stereogram according to the heat exchanger of second preferred embodiment of the invention;

Figure 12 is the stereogram according to the heat exchanger of third preferred embodiment of the invention;

The stereogram of Figure 13 state that to be expression pipe separate with heat exchanger according to the 3rd preferred embodiment, this pipe have locates the fluid communication passageway that forms and in the top at the bypass path of its lower end formation; With

Figure 14 is the view of expression according to the flow of refrigerant of the heat exchanger of fourth embodiment of the invention.

The specific embodiment

Describe the preferred embodiments of the present invention in detail now with reference to accompanying drawing.

Fig. 3 is the stereogram according to the heat exchanger of first preferred embodiment of the invention, Fig. 4 is the front view according to the heat exchanger of first preferred embodiment, Fig. 5 is the stereogram of the state that separates with heat exchanger according to this first preferred embodiment of expression common tube, Fig. 6 is the stereogram that expression has the state that the pipe of fluid communication passageway separates with heat exchanger according to this first preferred embodiment, Fig. 7 is the stereogram of the state that separates with heat exchanger according to this first preferred embodiment of expression dividing plate, Fig. 8 is the figure that the pressure drop rate of expression heat dissipation capacity and refrigerant side changes along with the ratio of the quantity of row's number of the pipe with fluid communication passageway and all pipes, Fig. 9 is the view of expression according to the flow of refrigerant of the heat exchanger of this first preferred embodiment, and Figure 10 is the view of expression according to the refrigerant distribution in the heat exchanger of this first preferred embodiment.

As shown in the figures, by being laminated into multilayer, many pipes 110 form heat exchanger 100 according to first preferred embodiment of the invention, and every pipe in these pipes all has the flow channel 114 that forms within it and is used for flowing of refrigerant.

Pipe 110 comprises: a pair of plate 111 that mutually combines; Two discrete flow channels 114 that in pipe, form; Be plugged between these two flow channels 114 and the vertical in the central separation projection 113 that forms; And the paired cup portion 112 of stretching out from the top and bottom of pipe, these glasss portion in a row forms and flows with flow channel 114 respectively and is communicated with.

And

case

101 and 102 is formed on the upper and lower of pipe 110 like this, so that cup portion 112 mutually combines.

Simultaneously, neck type jut 116 with a plurality of path 116b that separated by at least one second projection 116a is formed on the inlet side and the outlet side place of each flow channel 114 of pipe 110, thereby makes refrigerant be distributed equably and be introduced in the flow channel 114.

And, in every block of plate 111, a plurality of first projections 115 by moving passage 114 embossings of longshore current to projecting inward.First projection 115 regularly and diagonally opposing corner be arranged in latticed, in turbulization, to improve the flowability of refrigerant.The separation projection 113 and first projection 115 that is formed by plate 111 is in contact with one another respectively, combines by brazing then.

Simultaneously, fin 120 is plugged between the pipe 110 promoting heat exchange, and end plate 130 is installed in the outermost of pipe 110 and fin 120 to strengthen heat exchange.

In addition, inlet tube 150 and outlet 151 are installed in the place, two ends of a case in top box 101 and the nowel 102, to introduce and to discharge refrigerant.That is to say, inlet tube 150 and outlet 151 are installed by this way, they are flowed with two flow channels 114 at the array place, front and back that is positioned at pipe 110 be communicated with.And, if on end plate 130, be formed with flow channel, then can more freely change the position of inlet tube 150 and outlet 151.For example, inlet tube 150 can be installed on the top box 101, and outlet 151 can be installed on the nowel 102.

Below, be installed in situation on the top box 101 with describing inlet tube 150 and outlet 151.

In the pipe 110 that piles up, inlet side heat exchange section 103 is formed on pipe 110 and the inlet tube 150 mobile rear sides that are communicated with, and outlet side heat exchange section 104 is formed on pipe 110 and the outlet 151 mobile front sides that are communicated with.

And, fluid connecting device 140 is used to make the presumptive area of the case 101 of inlet side heat exchange section 103 and outlet side heat exchange section 104 to flow mutually and is communicated with, flowing refrigerant has identical flow direction with flowing refrigerant in outlet side heat exchange section 104 in inlet side heat exchange section 103 thereby make, and this is to flow mutually to be communicated with because of inlet side heat exchange section 103 and outlet side heat exchange section 104.

That is to say that in inlet side heat exchange section 103 and outlet side heat exchange section 104, refrigerant flows downward from top box 101,102 places return at nowel, under the effect that the dividing plate 111a that will describe below then separates, upwards flow towards top box 101.

Therefore, all inlet side heat exchange sections 103 have identical flow of refrigerant structure by this way with outlet side heat exchange section 104, promptly, under the effect of dividing plate 111a, refrigerant in inlet tube 150 sides flows downward to nowel 102 from top box 101, and travels up to top box 101. at the refrigerant of outlet 151 sides from nowel 102

Forms fluid connecting device 140 by forming fluid communication passageway 141, flowing with a pair of cup portion 112 that makes pipe 110 in predetermined zone is communicated with, and fluid communication passageway 141 is formed on and manages 110 top and locate.

Here, preferably form fluid connecting device 140 by this way, thereby 10%-50% zone of the top box 101 of inlet side heat exchange section 103 and outlet side heat exchange section 104 is interconnected, this is the overall dimensions of relative top box 101.That is to say, form respectively on it fluid connecting device 140 pipe 110 quantity whole pipe 110 quantity 10% to 50% in.

Fig. 8 is the figure that the pressure drop rate of expression heat dissipation capacity and refrigerant changes along with the ratio of the quantity of row's number of the pipe with fluid communication passageway and all pipes.As shown in Figure 8, the optimum ratio of quantity with pipe of fluid connecting device 140 is 10%-50%.If this ratio is less than 10%, the pressure drop rate of refrigerant just increases, and heat dissipation capacity just reduces.In addition, if this ratio greater than 50%, the pressure drop rate of refrigerant just increases, heat dissipation capacity just reduces, and the coolant channel group that the outlet side heat exchange section 104 of outlet 151 is installed on it becomes less.

Simultaneously, consider the pressure drop rate and the heat dissipation capacity of refrigerant, the ratio of quantity with all pipe arrays of the quantity of pipe array of fluid communication passageway 141 and heat exchanger 100 is preferably 20%-40%.

And fluid connecting device 140 preferably is formed on the approximate mid-section of heat exchanger 100.In addition, can consider the pressure drop rate of refrigerant distribution and refrigerant or heat exchanger effectiveness and suitably select to have the quantity of the pipe 110 of fluid communication passageway 141.

In addition, fluid communication passageway 141 can have identical or different size.Fluid communication passageway 141 is not to form continuously, and can only partly form by this way at required part place, thereby closes at least one fluid communication passageway 141 in the centre of fluid communication passageway 141 arrays.

A plurality of dividing plate 111a are divided into a plurality of heat exchange area 105-108 with inlet side heat exchange section 103 and outlet side heat exchange section 104, and these dividing plates 111a is installed by this way, so that part

heat exchange area

106 and 107, the mutual mobile connection by fluid connecting device 140 overlaps each other.

Dividing plate 111a is installed in the place, both sides of fluid connecting device 140, thereby a pair of cup 112a of portion of diagonally opposing corner location is closed.

Therefore, inlet side heat exchange section 103 and outlet side heat exchange section 104 are divided into first to fourth heat exchange area 105-108 by dividing plate 111a.Here, diagonally opposing corner ground location and first heat exchange area 105 and the 4th heat exchange area 108 that are inserted with dividing plate 111a betwixt have mutually similarly zone.Second heat exchange area 106 and the 3rd heat exchange area 107 that is communicated with that flow mutually by fluid connecting device 140 has mutually similarly zone.And fluid connecting device 140 partly covers second heat exchange area 106 and the 3rd heat exchange area 107.

Simultaneously, first to fourth heat exchange area 105-108 can be according to the position of dividing plate 111a and is freely changed heat exchange area.

And, under the situation of the specific location that in addition at least one dividing plate 111a (it closes glass portion 112 in the particular portion office) is installed in heat exchanger 100, can increase the refrigerant frequency of current downflow up and down, thereby can form fluid connecting device 140 at nowel 102 places, be used for how different fluid channel structures.

Below, with reference to Fig. 8 the flow of refrigerant according to the heat exchanger 100 of first preferred embodiment is described.

At first, the refrigerant that is introduced into by inlet tube 150 returns towards second heat exchange area 106 of inlet side heat exchange section 103 at first heat exchange area, 105 places, flows to outlet side heat exchange section 104 by fluid connecting device 140 then.Thereafter, the refrigerant that is introduced in outlet side heat exchange section 104 returns towards the 4th heat exchange area 108 at the 3rd heat exchange area 107 places, is discharged to outlet 151 then.

More specifically, the refrigerant that is introduced in the top box 101 of first heat exchange area 105 by inlet tube 150 flows downward along pipe 110, and towards nowel 102 motions.The refrigerant that moves in the nowel 102 is mobile towards the nowel 102 of second heat exchange area 106.

The nowel 102 interior refrigerant that flow into second heat exchange area 106 upwards flow along pipe 110, finish heat exchange at inlet side heat exchange section 103 places then in top box 101 motions.

Then, flow into fluid communication passageway 141 that the refrigerant in the top box 101 of second heat exchange area 106 form by the place, top at pipe 110 and flow towards the top box 101 of the 3rd heat exchange area 107.

The top box 101 interior refrigerant that are introduced in the 3rd heat exchange area 107 flow downward along pipe 110, and towards nowel 102 motions.The refrigerant that moves in the nowel 102 is mobile towards the nowel 102 of the 4th heat exchange area 108.

The nowel 102 interior refrigerant that flow into the 4th heat exchange area 108 upwards flow along pipe 110, finish heat exchange at outlet side heat exchange section 104 places then in top box 101 motions.By outlet 151 refrigerant be discharged to outside thereafter.

As mentioned above, in flow of refrigerant process as shown in Figure 9, heat exchanger 100 according to the present invention also is subjected to the influence of gravity and inertia.Yet, because inlet side heat exchange section 103 has identical flow of refrigerant direction with outlet side heat exchange section 104, so have first heat exchange area 105 of same air flow direction and the influence that the 3rd heat exchange area 107 all is subjected to acting on the gravity on the refrigerant that flows downward, but has different heat exchange area, and second heat exchange area 106 and the 4th heat exchange area 108 all be subjected to acting on along the upwards influence of the inertia on the flowing refrigerant of pipe 110, but have different heat exchange area.

And, in second heat exchange area 106, direction towards the end unshapeliness flowing refrigerant of

case

101 and 102 is changed to towards the direction of fluid connecting device 140 unshapeliness flowing refrigerant, thereby can prevent the stressing property of refrigerant to a certain extent, thereby make refrigerant can flow to every pipe 110 equably.That is to say, in second heat exchange area 106, because effect of inertia, end along the amount of managing 110 flowing refrigerant towards

case

101 and 102 increases gradually, but, can make towards the direction of

case

101 and 102 end unshapeliness flowing refrigerant and change into towards fluid connecting device 140 by fluid connecting device 140 being installed in the middle section of heat exchanger 100.

Therefore, the air of the cold part of mistake of process outlet side heat exchange section 104 passes through the superheat section of inlet side heat exchange section 103 as much as possible, and the cold part of mistake of passing through inlet side heat exchange section 103 as much as possible through the air of the superheat section of outlet side heat exchange section 104, thereby inlet side heat exchange section 103 and outlet side heat exchange section 104 carry out heat exchange mutually, thereby make the whole surface temperature distribution of heat exchanger 100 become even owing to having reduced surface temperature difference.

And, because the presumptive area place between inlet tube 150 and outlet 151 has formed fluid connecting device 140, can reduce the pressure drop rate of refrigerant and improve heat exchanger effectiveness, thereby can reduce the size of heat exchanger.In addition, by above-mentioned flow channel structure, because inlet tube 150 and outlet 151 can be installed in the place, both sides of top box 101, so easily forward direction is arranged them.Therefore, under heat exchanger 100 is installed in situation on the air conditioner housing, can realizes freely designing the refrigerant pipeline and arrange.

Figure 11 is the stereogram according to the heat exchanger of second preferred embodiment of the invention.Only describe the part different, and omit description the part identical with first embodiment with first embodiment.

As shown in figure 11, second embodiment has and the first embodiment identical construction.Yet, in a second embodiment, heat exchanger 100 is included in the distribution hole 112b that a case place in top box 101 and the nowel 102 forms, and this hole has the sectional area littler than the sectional area of the path of

case

101 or 102, to improve heat exchanger effectiveness by the evaporation that promotes refrigerant.

Here, distribution hole 112b is formed on cup portion 112 places, upper end of the pipe 110 with fluid connecting device 140, and preferably forms this distribution hole 112b in outlet side heat exchange section 104 rather than in inlet side heat exchange section 103.Certainly, can form a plurality of distributions hole 112b at the diverse location place of inlet side heat exchange section 103 and outlet side heat exchange section 104.

Therefore, when refrigerant by fluid connecting device 140 from inlet side heat exchange section 103 when outlet side heat exchange section 104 flows, a part of refrigerant is through distribution hole 112b.In said process, refrigerant atomizing (becoming molecule) and evaporation rapidly as mist, thus improved heat exchanger effectiveness.

Figure 12 is the stereogram according to the heat exchanger of third preferred embodiment of the invention, and the stereogram of Figure 13 state that to be expression pipe separate with heat exchanger according to the 3rd preferred embodiment, this pipe has locates the fluid communication passageway that forms and in the top at the bypass path of its lower end formation.The part different with second embodiment only described, and omit to second description of executing routine identical part.

As Figure 12 and shown in Figure 13, in the 3rd embodiment, heat exchanger according to the present invention has and the second embodiment identical construction.Yet, heat exchanger according to the 3rd embodiment is included in the bypass path 145 that at least one manages the formation of 110 places, be used to make a pair of cup 112 mobile mutually connections of portion that are positioned at refrigerant return area place, thereby make the nowel 102 of a part of bypass of the refrigerant that returns at nowel 102 places of inlet side heat exchange section 103 to outlet side heat exchange section 104.

Therefore, when the amount of flow of flowing refrigerant in heat exchanger 100 hour, in inlet side heat exchange section 103 part of flowing refrigerant by bypass path 145 and directly bypass to outlet side heat exchange section 104, thereby improved the Temperature Distribution of outlet side air.

Figure 14 is the view of expression according to the flow of refrigerant of the heat exchanger of fourth embodiment of the invention.Only describe the part different, and omit description the part identical with first embodiment with first embodiment.

As shown in figure 14, in the 4th embodiment, heat exchanger according to the present invention has and the first embodiment identical construction.Yet in the 4th embodiment, outlet 151 is installed in the central authorities of the 4th heat exchange area 108, and the 4th heat exchange area 108 is last heat exchange area of outlet side heat exchange section 104.

In first embodiment, because outlet 151 is positioned at the end of heat exchanger 100, so under action of inertia, refrigerant may flow to unshapeliness the end.That is to say that in outlet side heat exchange section 104, refrigerant flows very soon owing to it is in gaseous state.And, because 104 pairs of flow of refrigerant noises of outlet side heat exchange section are very responsive, if, just will produce the flow of refrigerant noise, thereby cause uneven refrigerant distribution and different temperature so refrigerant unshapeliness ground in outlet side heat exchange section 104 flows.

Therefore, in the 4th embodiment, outlet 151 is installed in the central authorities of the 4th heat exchange area 108, the 4th heat exchange area 108 is last heat exchange area of outlet side heat exchange section 104, thereby prevented the unshapeliness of the refrigerant located at outlet side heat exchange section 104 (it is more overheated than inlet side heat exchange section 103), and make refrigerant distribution become even, thereby by reducing towards the refrigerant of outlet 151 because the inhomogeneities that inertia causes, reduce the flow of refrigerant noise, but also made temperature become even.

As mentioned above, inlet side heat exchange section and outlet side heat exchange section are to flow mutually to be communicated with, and be interconnected by a pair of cup portion that makes the presumptive area place that is positioned at heat exchanger central authorities and have identical flow of refrigerant direction, thereby stressing property that can be by reducing refrigerant and pressure drop rate and by between inlet side heat exchange section and outlet side heat exchange section, complementally carrying out heat exchange mutually, reduce the size of heat exchanger, and make the surface temperature distribution of heat exchanger become even and improve heat exchanger effectiveness.

And in order to obtain best heat dissipation capacity, the ratio of the whole dimension of fluid connecting device (fluid communication passageway) and heat exchanger is in the scope of 10%-50%.

In addition, by above-mentioned flow channel structure, because inlet tube and outlet can be installed in the place, both sides of top box, so easily forward direction is arranged them.

And, because in case, be formed with the little distribution hole of sectional area of the path of sectional area ratio case, thus also evaporate rapidly through the refrigerant atomizing in distribution hole, thus improved heat exchanger effectiveness.

In addition, because heat exchanger comprises the bypass path, be used to allow the bypass of the part of the refrigerant that returns in inlet side heat exchange department office towards the outlet side heat exchange section, so when the amount of flow of flowing refrigerant in heat exchanger hour, in the inlet side heat exchange section part of flowing refrigerant by this bypass path and directly bypass to the outlet side heat exchange section, thereby the air themperature of having improved outlet side distributes.

And, because outlet is installed in the central authorities of the 4th heat exchange area (it is the last heat exchange area of outlet side heat exchange section), thus the unshapeliness of refrigerant and the mobile noise of refrigerant can be reduced, and can make temperature even.

Although invention has been described with reference to concrete exemplary embodiment, the present invention is not subjected to the restriction of these embodiment, and is only limited by claims.Those skilled in the art it will be appreciated that under the situation that does not deviate from scope and spirit of the present invention and can change these embodiments or revise.

Claims

1, a kind of heat exchanger, it comprises: many pipes (110), every pipe all forms by a pair of plate (111) is mutually combined, every described pipe (110) has two the discrete flow channels (114) that form within it, be plugged in separation projection (113) between described two flow channels (114) and paired cup portion (112), be formed with a pair of described cup portion (112) at the place, top and bottom of every described pipe to be communicated with each flow channel (114), the cup portion (112) of the upper end of every described pipe and lower end interconnects respectively to form top box (101) and nowel (102) in a row; And inlet tube (150) and outlet (151), they are communicated with described two flow channels (114) respectively, be used to allow the inflow and the outflow of refrigerant, it is characterized in that, inlet tube (150) with described many pipes (110) thus a side flow passages flow to be communicated with and form an inlet side heat exchange section (103)

Outlet (151) and described many pipes (110) thus the opposite side flow communication form an outlet side heat exchange section (104),

One fluid communication apparatus (140) makes the mobile mutually connection of the presumptive area of the described top box (101) that described inlet tube and/or outlet are installed on it, thereby make the mobile mutually connection of described inlet side heat exchange section (103) and outlet side heat exchange section (104) and make them have identical flow of refrigerant direction, and

A plurality of dividing plates (111a) are divided into a plurality of heat exchange area (105-108) with described inlet side heat exchange section (103) and outlet side heat exchange section (104), and the mode of closing by the cup portion (112a) that is positioned on fluid connecting device (140) two ends forms these dividing plates with making diagonally opposing corner so that described heat exchange area (106,107), the part that is communicated with of flowing mutually by fluid connecting device (140) is overlapped.

2, heat exchanger according to claim 1 is characterized in that, is connected to form described fluid connecting device (140) by forming fluid communication passageway (141) with a pair of cup portion (112) that makes described pipe (110) in described presumptive area.

3, heat exchanger according to claim 1, it is characterized in that, the zone that the described inlet side heat exchange section (103) described top box (101), that be interconnected by described fluid connecting device (140) of described inlet tube and/or outlet and outlet side heat exchange section (104) are installed on it be equipped with on it described inlet tube and/or outlet described top box (101) whole zone 10%-50%.

4, heat exchanger according to claim 2 is characterized in that, the ratio of quantity of all pipe arrays with the quantity of pipe array of fluid communication passageway (141) and heat exchanger (100) is in 20%-40% scope.

5, heat exchanger according to claim 2 is characterized in that, described fluid connecting device (140) is formed on the middle section of heat exchanger (100).

6, heat exchanger according to claim 1, it is characterized in that, a place in described top box (101) and nowel (102) is formed with distribution hole (112b), and this distribution hole has the little sectional area of sectional area than the internal path of described top box (101) or nowel (102).

7, heat exchanger according to claim 6 is characterized in that, described distribution hole (112b) is formed in the have fluid connecting device upper end cup portion (112) of pipe (110) of (140).

8, heat exchanger according to claim 1, it is characterized in that, locate to be formed with bypass path (145) at least one pipe (110), be used to make a pair of cup portion (112) that is positioned at refrigerant return area place to be interconnected, thereby make the nowel (102) of a part of bypass of the refrigerant of locating to return at the nowel (102) of described inlet side heat exchange section (103) to described outlet side heat exchange section (104).

9, heat exchanger according to claim 1 is characterized in that, described outlet (151) is installed in the centre of the last heat exchange area (108) of described outlet side heat exchange section (104).