CN109844439A - Heat exchanger and the refrigeration system for using the heat exchanger - Google Patents

Abstract

Heat exchanger is configured to: forming the 1st fluid flowing path (11) group in plate fin (2a) the setting concave groove for constituting heat exchanger, and in collection tube opening (88b) setting flow-dividing control pipe (24) for the outlet side being connected with the 1st fluid flowing path (11) group.

Description

Heat exchanger and the refrigeration system for using the heat exchanger

Technical field

The present invention relates to heat exchanger and use the refrigeration system of the heat exchanger.More particularly to refrigerant will be flowed Plate plate fin (plate fin) stacking and the heat exchanger of plate fin laminated type that constitutes and using the heat exchanger Refrigeration system.

Background technique

In general, making the refrigerant the (the 1st by compressor compresses in the refrigeration systems such as air conditioner and refrigeration machine Fluid) it is recycled in the heat exchangers such as condenser and evaporator, heat exchange is carried out with the 2nd fluid (such as air), to be supplied Cold or heating, but according to the heat exchanger effectiveness of heat exchanger difference, largely control the performance and section as system It can property.Therefore, tight demand heat exchanger is efficient.

As a kind of efficient technology of heat exchanger, there is the thin footpath for the heat conducting pipe that will flow heat-exchange fluid The technology of change.In addition, there is the skill for for example equably shunting shunting to the refrigerant of each heat conducting pipe as another technology Art.

Wherein, it is however generally that, the heat exchanger of refrigeration system makes heat conducting pipe perforation fins set and the finned tube that constitutes (fin tube) type heat exchanger.The thinning for realizing the heat conducting pipe of fin tube heat exchanger, advances heat exchanger effectiveness Raising and miniaturization (for example, 1 reference of patent document).

On the other hand, it is realized in the following way for improving the shunting of the heat-exchange fluid of heat exchanger effectiveness: The collector flow path that heat-exchange fluid is guided to each heat conducting pipe assembles flow-dividing control pipe, makes point of the refrigerant gone to each heat conducting pipe Stream is uniformly to improve heat exchanger effectiveness (for example, referring to patent document 2).

Figure 29 indicates heat exchanger described in Patent Document 1.As shown in figure 29, heat exchanger 100 is so that heat conducting pipe 102 passes through The mode of logical fins set 101 is constituted.The refrigerant inlet side collector 103 of heat exchanger 100 is provided with flow-dividing control pipe 104. Multiple refrigerant diffluence pass 105 are equipped in the column of flow-dividing control pipe 104, multiple refrigerant diffluence pass 105 are respective to be sized to Become smaller with separate from refrigerant inlet.Using thus configured flow-dividing control pipe 104, by what is flowed in each heat conducting pipe 102 Refrigerant equably shunts.

Heat exchanger 100 refrigerant inlet side carry out refrigerant shunting, therefore be able to suppress the pressure loss increase and The rising of caused refrigerant temperature, and refrigerant is diverted to each heat conducting pipe 102, it can be 104 to each flow-dividing control pipe If equably shunted, raising heat exchanger effectiveness (when carrying out the shunting of refrigerant in refrigerant outlet side, the pressure loss (hereinafter, Referred to as " crushing ") become larger and refrigerant temperature is got higher, become smaller with the temperature difference for the 2nd fluid for carrying out heat exchange, offsets because dividing The homogenization of stream and the effect for improving heat exchanger effectiveness can reduce heat exchanger effectiveness on the contrary, therefore will make in refrigerant inlet side Cryogen shunts).

However, the heat conducting pipe 102 of fin tube heat exchanger 100 described in Patent Document 1 is pipe, therefore it is thinned and exists The limit constantly approaches the limit using the thinning of heat conducting pipe 102 to improve heat exchanger effectiveness.

However, heat conducting pipe then can be easily thinned if it is plate fin laminated type heat exchanger.That is, in plate fin layer Stack-type heat exchanger is formed with concave groove is stamping and is equivalent to the flow path of heat conducting pipe in plate fin.So reduce institute's shape At flow path sectional area be readily, which can be smaller compared with the heat conducting pipe 102 of fin tube heat exchanger 100.

Therefore, applicants studied the plate fin laminated type heat exchangers constituted in the plate fin stacking that will have flow path The flow-dividing control pipe recorded improves the technology of heat exchanger effectiveness in combination patent document 2.

However, can not be filled even if the collector flow path in above-mentioned plate fin laminated type heat exchanger assembles flow-dividing control pipe The shunting effect of flow-dividing control pipe is waved in distribution, and key subjects are still had on heat exchanger effectiveness improving using shunting.

Existing technical literature

Patent document

Patent document 1: Japanese Unexamined Patent Publication 2010-78289 bulletin

Patent document 2: Japanese Unexamined Patent Publication 2012-207912 bulletin

Summary of the invention

The present invention is to complete in view of above-mentioned project through sharp study, can take into account the thinning of flow path and utilize and divide Effect is flowed to improve heat exchanger effectiveness, therefore is capable of providing efficient heat exchanger and the high performance system using the heat exchanger Cooling system.

Specifically, the heat exchanger of an example of embodiments of the present invention includes: plate fin laminated body, have for the The flow path of 1 fluid (refrigerant) flowing；With the multiple plate fins for constituting plate fin laminated body.Multiple plate fins respectively have flow path Region and header areas.Flow passage region has multiple 1st fluid flowing paths abreast flowed for the 1st fluid.Header areas has The multiple collector flow paths being respectively communicated with multiple 1st fluid flowing paths.Multiple 1st fluid flowing paths in multiple plate fins to be respectively set The mode of concave groove is formed.Multiple collector flow paths have entrance side collector flow path and outlet-side header flow path.Outlet-side header stream Road is configured to the evaporation outlet of the 1st fluid, is provided in outlet-side header flow path and shunts the fluid into multiple 1st fluid streams for the 1st The 1st divided fluid stream pipe (flow-dividing control pipe) on road.

It utilizes such structure, the diameter of the flow path cross sectional area of the 1st fluid flowing path can be reduced and improve heat exchange effect Rate, while the 1st fluid is reliably diverted to multiple 1st fluid flowing paths respectively as designed.As a result, in addition to because making to shunt It uniformly improves except heat exchanger effectiveness, the high heat exchanger of heat exchanger effectiveness can be made.That is, plate fin laminated type Heat exchanger is increased in manifold outlet ports side than collector flow path side by reducing the diameter of the 1st fluid flowing path, the crushing of the 1st fluid Several times.On the other hand, larger impact of the shunting of the 1st fluid by the distribution situation of crushing.Therefore, even if plate fin laminated type The entrance side collector flow path of the common sense as the prior art is arranged in flow-dividing control pipe by heat exchanger as described above, outlet The crushing of side collector flow path also increases several times, therefore the 1st fluid flowed in the 1st fluid flowing path depends on outlet-side header stream The crushing on road cannot shunt as designed.However, in the heat exchanger of an example of embodiments of the present invention, according to The size and crushing distribution situation of crushing difference at entrance side collector flow path and outlet-side header flow path, flow-dividing control pipe is arranged In the higher outlet-side header flow path of crushing.It utilizes such structure, the high several times for having larger impact to shunting can be controlled Crushing distribution in outlet-side header flow path also can be realized so as to shunt uniformly because making to improve heat exchange effect due to shunting uniformly Rate.

Detailed description of the invention

Fig. 1 is the perspective view for indicating the appearance of the plate fin laminated type heat exchanger in embodiments of the present invention 1.

Fig. 2 is the decomposition for the state for separating the plate fin laminated type heat exchanger in embodiments of the present invention 1 up and down Perspective view.

Fig. 3 is the exploded perspective view of the plate fin laminated type heat exchanger in embodiments of the present invention 1.

Fig. 4 is the shape after extracting flow-dividing control pipe from the plate fin laminated type heat exchanger in embodiments of the present invention 1 The perspective view of state.

Fig. 5 is from the header areas portion of the plate fin laminated type heat exchanger from side in embodiments of the present invention 1 The figure divided.

Fig. 6 is the sectional view of the 6-6 line of Fig. 1 of the plate fin laminated type heat exchanger in embodiments of the present invention 1.

Fig. 7 is the sectional view of the 7-7 line of Fig. 1 of the plate fin laminated type heat exchanger in embodiments of the present invention 1.

Fig. 8 is the sectional view of the 8-8 line of Fig. 2 of the plate fin laminated type heat exchanger in embodiments of the present invention 1.

Fig. 9 is by the interconnecting piece of the inflow and outflow pipe of the plate fin laminated type heat exchanger in embodiments of the present invention 1 Divide the perspective view cut off with collector opening portion to indicate.

Figure 10 is by the system of the plate fin laminated body in the plate fin laminated type heat exchanger in embodiments of the present invention 1 Refrigerant line group partial cut is come the perspective view that indicates.

Figure 11 is to cut the refrigerant flow path group part of the plate fin laminated type heat exchanger in embodiments of the present invention 1 The perspective view for breaking to indicate.

Figure 12 is by the positioning of plate fin laminated body in the plate fin laminated type heat exchanger in embodiments of the present invention 1 Boss hole partial cut is come the perspective view that indicates.

Figure 13 is by the collector of the plate fin laminated body of the plate fin laminated type heat exchanger in embodiments of the present invention 1 The perspective view that opening portion cuts off to indicate.

Figure 14 is point for indicating the plate fin laminated body of the plate fin laminated type heat exchanger in embodiments of the present invention 1 The perspective view of flow control tubulation insertion portion.

Figure 15 is the perspective view of the flow-dividing control pipe of the plate fin laminated type heat exchanger in embodiments of the present invention 1.

Figure 16 is the flow-dividing control tube portion for indicating the plate fin laminated type heat exchanger in embodiments of the present invention 1 Sectional view.

Figure 17 is the plate of the plate fin laminated body of the composition plate fin laminated type heat exchanger in embodiments of the present invention 1 The top view of fin.

Figure 18 is the enlarged plan view for indicating the header areas of the plate fin in embodiments of the present invention 1.

Figure 19 is the exploded view for being indicated composition a part amplification of the plate fin in embodiments of the present invention 1.

Figure 20 A is the top view of the 1st plate fin of the plate fin in embodiments of the present invention 1.

Figure 20 B is the top view of the 2nd plate fin of the plate fin in embodiments of the present invention 1.

When Figure 20 C is for illustrating that the 1st wing plate of the plate fin in embodiments of the present invention 1 is Chong Die with the 2nd wing plate The top view of state.

Figure 21 is that the amplification for the protrusion for indicating the flow passage region for being set to plate fin in embodiments of the present invention 1 is three-dimensional Figure.

Figure 22 is the refrigerant flow path U-bend side end for being set to plate fin indicated in embodiments of the present invention 1 The amplification stereogram of protrusion.

Figure 23 is the perspective view for indicating the appearance of the plate fin laminated type heat exchanger in embodiments of the present invention 2.

Figure 24 is the plate wing of the plate fin laminated body of the composition plate fin laminated type heat exchanger of embodiments of the present invention 2 The top view of piece.

Figure 25 is one of the structure of the plate fin in the plate fin laminated type heat exchanger by embodiments of the present invention 2 The exploded view for dividing amplification to indicate.

Figure 26 is the refrigeration of the plate fin laminated body in the plate fin laminated type heat exchanger by embodiments of the present invention 2 Agent flow path group partial cut is come the perspective view that indicates.

Figure 27 is the figure for indicating the refrigeration cycle of the air conditioner using board stacking type heat exchanger of the invention.

Figure 28 is the summary sectional view of the air conditioner in embodiments of the present invention 2.

Figure 29 is the sectional view of existing heat exchanger.

Specific embodiment

The heat exchanger of an example of embodiments of the present invention includes: plate fin laminated body, is had for the 1st fluid (system Cryogen) flowing flow path；With the multiple plate fins for constituting plate fin laminated body.Multiple plate fins respectively have flow passage region sum aggregate Area under control domain.Flow passage region has multiple 1st fluid flowing paths abreast flowed for the 1st fluid.Header areas has and multiple 1 Multiple collector flow paths that fluid flowing path is respectively communicated with.Multiple 1st fluid flowing paths are to be respectively set concave groove in multiple plate fins Mode is formed.Multiple collector flow paths have entrance side collector flow path and outlet-side header flow path.Outlet-side header flow path is configured to The evaporation of 1st fluid exports, and the 1st stream for shunting the fluid into multiple 1st fluid flowing paths for the 1st is provided in outlet-side header flow path Body isocon (flow-dividing control pipe).

It utilizes such structure, can be realized the thinning of the flow path cross sectional area of the 1st fluid flowing path and improve heat exchange effect Rate, and can multiple 1st fluid flowing paths reliably be shunted the fluid by the 1st as designed.Therefore, such knot is utilized Structure can improve heat exchanger effectiveness using homogenization is shunted, and obtain the higher heat exchanger of heat exchanger effectiveness.That is, About the heat exchanger of plate fin laminated type, the 1st fluid flowing path is thinned, the crushing of the 1st fluid is than header inlet as a result, Side also increases several times at manifold outlet ports side.On the other hand, larger shadow of the shunting of the 1st fluid by the distribution situation of crushing It rings.Therefore, even if flow-dividing control pipe is arranged in as, the prior art as described above for plate fin laminated type heat exchanger The entrance side collector flow path of common sense, the crushing of outlet-side header flow path also increase several times, therefore flowed in the 1st fluid flowing path 1st fluid depends on the crushing of outlet-side header flow path, cannot shunt as designed.However, in embodiment party of the invention In the heat exchanger of an example of formula, according to the size and crushing of the crushing difference at entrance side collector flow path and outlet-side header flow path Flow-dividing control pipe is set to the higher outlet-side header flow path of crushing by distribution situation.It utilizes such structure, controls to shunting By the distribution of the crushing of larger impact, more specifically, several times higher than crushing in entrance side collector flow path, outlet side are controlled Crushing distribution in collector flow path, can make to shunt homogenization, can reach using homogenization is shunted and improve heat exchanger effectiveness Purpose.

In addition, header areas also can have the 1st stream of outflow in the heat exchanger of an example of embodiments of the present invention The collection tube opening of body.In addition, the 1st divided fluid stream pipe can also have in the heat exchanger of an example of embodiments of the present invention There are multiple 1st divided fluid stream mouths.In this case, multiple 1st divided fluid stream mouths are also configured to, the 1st divided fluid stream pipe is set It is placed in the opening area from collection tube opening the 1st divided fluid stream mouth of position farther out, greater than being set to from collection for the 1st divided fluid stream pipe The opening area of 1st divided fluid stream mouth of tube opening closer location.

It utilizes such structure, inhibits in the 1st fluid flowing path close to the 1st fluid inlet side and close to the 1st fluid outlet The deviation of the fluid flow generated between 1st fluid flowing path of side, can make the 1st Fluid Volume equalization, can further increase Heat exchanger effectiveness.Also, using the simple barrel structure for only opening diffluence pass, control the crushing of the 1st fluid outlet side portion Deng the 1st fluid reliably can be shunted, can be supplied with cheap price.

In addition, multiple 1st fluid flowing paths can be made with U-shaped in the heat exchanger of an example of embodiments of the present invention The mode for being bent into substantially U-shaped is constituted, so that header areas is collectively formed at multiple respective one ends of plate fin.

Utilize such structure, can not lengthened plate fin and lengthen the 1st fluid flowing path, increase the 1st fluid heat exchange Amount improves heat exchanger effectiveness, and can also be pushed further into the miniaturization of heat exchanger.

In addition, the present invention provides a kind of refrigeration system, it can be by the heat of an example of above-mentioned embodiments of the present invention Any one of exchanger as constitute refrigeration cycle heat exchanger come using.

It can be using any one of the heat exchanger of an example of above-mentioned embodiments of the present invention as composition refrigeration cycle Heat exchanger come using refrigeration system, the heat exchanger effectiveness of heat exchanger is higher, therefore can be the higher height of energy saving The refrigeration system of performance.

Hereinafter, illustrating the example of embodiments of the present invention referring to attached drawing.

Additionally, this invention is not limited to the composition of plate fin laminated type heat exchanger documented by the following embodiments and the accompanying drawings, packets Structure and function etc. containing the heat exchanger being equal with the technical idea illustrated in the following embodiments.

In addition, embodiments described below is to indicate the embodiment of an example of the invention, provide in embodiments Structure, function and movement etc. to illustrate, do not limit the present invention.

(embodiment 1)

Fig. 1 is the perspective view for indicating the appearance of plate fin laminated type heat exchanger of embodiments of the present invention 1, and Fig. 2 is The exploded perspective view and Fig. 3 for the state that the plate fin laminated type heat exchanger of embodiments of the present invention 1 is separated up and down It is the exploded perspective view of the plate fin laminated type heat exchanger of embodiments of the present invention 1.Fig. 4 is from embodiments of the present invention 1 plate fin laminated type heat exchanger extracts the perspective view of the state of flow-dividing control pipe and Fig. 5 is of the invention from side Embodiment 1 plate fin laminated type heat exchanger header areas part figure.Fig. 6 is in embodiments of the present invention 1 Plate fin laminated type heat exchanger Fig. 1 6-6 line sectional view.Fig. 7 is the plate fin in embodiments of the present invention 1 The sectional view of the 7-7 line of Fig. 1 of laminated type heat exchanger.Fig. 8 is the plate fin laminated type heat in embodiments of the present invention 1 The sectional view of the 8-8 line of Fig. 2 of exchanger.Fig. 9 is by the plate fin laminated type heat exchanger of embodiments of the present invention 1 The coupling part sum aggregate tube opening partial cut of inflow and outflow pipe is come the perspective view that indicates.

Shown in FIG. 1 to FIG. 9,1 (the hreinafter referred to as hot friendship of plate fin laminated type heat exchanger of embodiments of the present invention 1 Parallel operation 1) it is the preferred heat exchanger as uses such as evaporators.Heat exchanger 1 includes: as the 1st fluid The inflow pipe (inlet header) 4 that refrigerant can flow into；The plate that multiple plate fin 2a stacking of rectangular plate is constituted Fin laminated body 2；With the effuser (outlet header) 5 for the refrigerant discharge that will be flowed in the flow path in plate fin 2a.

In addition, (being upside in Fig. 1 in the two sides of the stacking direction (being up and down direction in Fig. 1) of plate fin laminated body 2 And downside), end plate 3a, 3b when being provided with vertical view with plate fin 2a for roughly the same shape.End plate 3a, 3b are by having rigidity Plate is formed, such as is carried out intermetallic composite coating to aluminium, aluminium alloy or stainless steel and other metal materials by grinding and formed.

In addition, in the present embodiment, end plate 3a, 3b and multiple plate fin 2a soldered joint and shape in the state of stacking It is integrally formed, but is not limited to the structure, the fixing means with other heat resistances also can be used, such as engagement chemically Component is engaged.

In addition, in the present embodiment, end plate 3a, 3b of the two sides (the upper side and lower side) of plate fin laminated body 2 are to clamp The form of plate fin laminated body 2, it is by the linking parts such as bolt and nut or riveting pin axis 9, plate fin laminated body 2 is mechanically solid Due to the both ends of the length direction of end plate 3a, 3b.

In addition, in the present embodiment, in the one end (being left end in Fig. 1) of the length direction of end plate 3a, 3b Header areas corresponding part, is also configured with stiffening plate 16a, 16b.By fixing stiffening plate 16a, 16b and linking part 9 are affixed They, mechanically grip block fin laminated body 2 (end plate 3a, 3b are also included).

In addition, stiffening plate 16a, 16b is also same as end plate 3a, 3b by having the plate of rigidity, such as stainless steel or aluminium The metal materials such as alloy are formed.Preferred material of the rigidity than end plate 3a, 3b high of stiffening plate 16a, 16b, or it is thicker using plate thickness Material.

In addition, plate fin 2a has 11 groups of refrigerant flow path (for the plate fin 2a's comprising 11 groups of the refrigerant flow path Refrigerant flow path structure, is discussed in detail below), 11 groups of refrigerant flow path be abreast configured with it is multiple inside this as the 1st The refrigerant flow path 11 of the refrigerant flowing of fluid.The inflow pipe 4 and effuser 5 being connected with 11 groups of refrigerant flow path will be (hereinafter, will Flowing into pipe 4 and effuser 5 and be referred to as inflow and outflow pipe) centralized configuration is in the side (being upside in Fig. 1) of plate fin laminated body 2 End plate 3a length direction one end.

About the heat exchanger 1 of present embodiment formed as described above, each plate wing of the refrigerant in plate fin laminated body 2 Concurrently flowed in multiple flow path groups of the inside of piece 2a in the length direction of each plate fin 2a, the end of each plate fin 2a with U-bend is turned back, and is discharged from effuser 5.On the other hand, the 2nd fluid (such as air) is formed through in composition plate fin laminated body 2 Plate fin 2a lamination between gap.Thereby, it is possible to carry out refrigerant and the 2nd fluid (such as air) as the 1st fluid Heat exchange.

Then, the plate fin laminated body 2 using Figure 10~Figure 13 and Figure 17~Figure 22, to the main body for constituting heat exchanger 1 It is illustrated with the plate fin 2a for constituting the plate fin laminated body 2.

Figure 10 is a part of quilt of the plate fin laminated body of the plate fin laminated type heat exchanger of embodiments of the present invention 1 The perspective view of the state of cutting.Figure 11 is the refrigerant flow path of the plate fin laminated type heat exchanger of embodiments of the present invention 1 The perspective view of the cut-off state in group part.Figure 12 is the plate fin laminated type heat exchanger in embodiments of the present invention 1 The perspective view of the cut-off state of the boss bore portion of the positioning of plate fin laminated body.Figure 13 is embodiments of the present invention 1 Plate fin laminated type heat exchanger plate fin laminated body the cut-off state in collector opening portion perspective view.

Figure 17 is the plate fin laminated type heat exchanger in embodiments of the present invention 1, composition plate fin laminated body The top view of plate fin.Figure 18 is the header areas of the plate fin of 1 plate fin laminated type heat exchanger of embodiments of the present invention Enlarged plan view.

Figure 19 is one of the plate fin laminated type heat exchanger in embodiments of the present invention 1, plate fin structure The amplification decomposition figure divided.Figure 20 A is the 1 of the plate fin of the plate fin laminated type heat exchanger in embodiments of the present invention 1 The top view of plate fin.Figure 20 B is the 2 of the plate fin of the plate fin laminated type heat exchanger in embodiments of the present invention 1 The top view of plate fin.Figure 20 C is for illustrating the plate fin laminated type heat exchanger in embodiments of the present invention 1, plate The top view of state when 1st wing plate of fin and the 2nd wing plate are overlapped.Figure 21 is the plate fin in embodiments of the present invention 1 Laminated type heat exchanger, be set to the amplification stereogram of the protrusion of the flow passage region of plate fin.Figure 22 is implementation of the invention Plate fin laminated type heat exchanger in mode 1, the refrigerant flow path U-bend side end that is set to plate fin protrusion is put Big perspective view.

As shown in Figure 10, by tool, there are two types of plate fin 2a (the 1st plate fins 66 and the 2nd of flow passage structure for plate fin laminated body 2 Plate fin 77) it is laminated and constitutes.

The 1st plate fin 66 of plate fin 2a and the 2nd plate fin 77 are as shown in figure 19 respectively, the refrigerant flow path of explained later Structure is with the 2nd plate-shaped member 66b of stamping the 1st plate-shaped member 66a and same structure relatively soldered joint Mode is constituted.1st plate-shaped member 66a and the 2nd plate-shaped member 66b are made of sheet metals such as aluminium, aluminium alloy or stainless steels.

Hereinafter, being illustrated to the flow passage structure formed in plate fin 2a.

In addition, the 1st plate fin 66 and the 2nd plate fin 77 of plate fin 2a are inclined in addition to the position of aftermentioned refrigerant flow path 11 From being in addition identical structure, therefore in Figure 17~Figure 19 etc., the appended drawing reference for only marking the 1st plate fin 66 is illustrated.

Plate fin 2a (the 1st plate fin 66 and the 2nd plate fin 77) as shown in figure 17, (is scheming in the one end of length direction It is left side in 17) it is formed with header areas H, become flow passage region P in other regions.In the present embodiment, in header areas H The collection tube opening 88b for being formed with the collection tube opening 88a of the inflow side of the 1st fluid and the outlet side of the 1st fluid (they are referred to Collect tube opening 88).Collection tube opening 88a is connect with pipe 4 is flowed into, and collection tube opening 88b is connect (referring to Fig. 4) with effuser 5.

In addition, the 1st fluid in flow passage region P, abreast configured with multiple refrigerant flowings from collection tube opening 88a Flow path, that is, refrigerant flow path 11.(right-hand end in Figure 17 is attached for 11 groups of refrigerant flow path the other end in the 1st plate fin 66 It closely) turns back, is connected with the collection tube opening 88b of outlet side.It explains in detail, includes collection with inflow side for 11 groups of refrigerant flow path The tube opening 88a connected outlet side flow path portion 11a and return road side flow path portion 11b being connected with the collection tube opening 88b of outlet side.Separately Outside, end is formed in the form of substantially U-shaped is turned back for 11 groups of refrigerant flow path.The system of collection tube opening 88a from inflow side The collection tube opening 88b of outlet side is flowed to when cryogen is gone from outlet side flow path portion 11a to return road side flow path portion 11b with U-bend.

In addition, around the collection tube opening 88a of inflow side and the collection tube opening 88b of outflow side, as shown in figure 18, respectively It is formed with collection tube opening 88a, 88b and 11 groups of the refrigerant flow path collector flow paths being connected 10,14.Collector flow path 10 include: with The peripheral flow path 10a that the mode swelled from the periphery of collection tube opening 88a, 88b is formed；In the refrigerant flow path of peripheral flow path 10a The connection flow path 10b that 11 groups of sides extend；With will connect be connected with 11 groups of refrigerant flow path of each flow path more points of flow path 10b Zhi Liulu 10c.

In addition, peripheral flow path 10a in collector flow path 10, connection flow path 10b and multiple-limb flow path 10c and being abreast arranged It compares in each refrigerant flow path 11 of flow passage region P and is formed in a manner of larger-size, the longitudinal section shape orthogonal with flow direction Shape has rectangular shape.

In addition, opening of the diameter of the opening shape of the collection tube opening 88b of outlet side than the collection tube opening 88a of inflow entrance side The diameter of shape is big.This be heat exchanger 1 is used as condenser, so in outlet side refrigerant vapor and volume is increased Reason.

In addition, being set as the number of the outlet side flow path portion 11a being connected of the collection tube opening 88a with inflow side less than refrigeration The number of its flowable return road side flow path portion 11b when agent is gone to the collection tube opening 88b of outlet side.This with collection tube opening 88a, Reason is identical in the case that the diameter of 88b is different, is the reason that the volume of the refrigerant after heat exchange becomes smaller.

In the present embodiment, the number for instantiating outlet flow path portion 11a is 2, and the number of return road side flow path portion 11b is 5, but it is without being limited thereto.

In addition, being formed with the collector from inflow side in plate fin 2a (the 1st plate fin 66 and the 2nd plate fin 77) The region of outlet side flow path portion 11a that the refrigerant of 88a that is open flows into, and is formed with collection tube opening of the refrigerant to outlet side When 88b is gone between the region of its flowable return road side flow path portion 11b, in order to reduce plate fin 2a (the 1st plate fin 66 and 2 plate fins 77) in refrigerant between heat transfer (heat-insulated), be formed with slit 15 (2 and Figure 13 referring to Fig.1).

The plate fin 2a of composition (the 1st plate fin 66 and the 2nd plate fin 77) is laminated as described above and constitutes plate fin Laminated body 2.By plate fin laminated body 2 as main body heat exchanger 1 as shown in Fig. 4, Figure 14 and Figure 16 etc., become its outlet The collector flow path 14 of side is provided with the flow-dividing control pipe 24 of refrigerant.

As shown in figure 14, flow-dividing control pipe 24 is set to the outlet side of the evaporation outlet as refrigerant in the way to insert Collection tube opening 88b, i.e., in the collector flow path 14 of outlet side.As shown in figure 16, the front end of flow-dividing control pipe 24 extends to not The end plate 3b of side equipped with collection tube opening, becomes by the closed state of end plate 3b.In addition, flow-dividing control pipe 24 can be for before it End is closed, and is also configured to abut with end plate 3b.

Flow-dividing control pipe 24 is made of the diameter pipe smaller than the internal diameter for collecting tube opening 88b.In flow-dividing control pipe 24 and collector Refrigerant circulation gap 25 is formed between opening inner surface.In the length direction of flow-dividing control pipe 24, i.e. plate fin 2a's Stacking direction is formed with multiple diffluence pass 26 at substantially equal intervals.

Multiple diffluence pass 26 are formed as the direction flowed with refrigerant, that is, go to the collection tube opening 88b of outlet side, hole Diameter becomes smaller (referring to Fig.1 6).

In addition, flow-dividing control pipe 24 as shown in figure 15, is installed on stiffening plate 16a.Flow-dividing control pipe 24 be configured to pass through by Stiffening plate 16a is mounted on the end plate 3a of 2 two sides of plate fin laminated body, and with insertion setting in collection tube opening 88b.

In the stiffening plate 16a for being equipped with flow-dividing control pipe 24, opposite with flow-dividing control pipe 24 another side, fixedly connect It is connected to effuser 5.

About heat exchanger 1 formed as described above, in order between the plate fin stacking of further holding plate fin laminated body 2 Every and improve rigidity, be configured to as described below, be illustrated.

That is, one of the plate fin 2a (the 1st plate fin 66 and the 2nd plate fin 77) of plate fin laminated body 2 is constituted, in this reality It applies in mode, is the 1st plate fin 66, as shown in FIG. 20 A, in its flow passage region P (referring to Fig.1 7) in length direction by regulation Interval is formed with multiple protrusions 12 (the 1st, which cuts forming protrusion 12a, 12aa and the 2nd, cuts forming protrusion 12b).

Figure 20 A indicates the 1st plate fin 66, and Figure 20 B indicates the 2nd plate fin 77, and Figure 20 C expression makes two wing plate 2a the (the 1st Plate fin 66 and the 2nd plate fin 77) overlapping when state.

Shown in Figure 20 A~Figure 20 C, the 1st cuts the long edge that forming protrusion 12a, 12aa is respectively formed in the 1st plate fin 66 The flat end 19a in portion's (being the long edge part of the left and right sides of the 1st plate fin 66 in Figure 20 A) and the two sides edge of slit 15 Flat end 19b.As shown in figure 11, the 1st cut forming protrusion 12a, 12aa stacking direction and the 1st plate fin 66 relatively It is adjacent, (the two of the 1st incision forming protrusion 12aa and slit 15 are abutted with the flat end 19a of the long edge part of the 2nd plate fin 77 The case where flat end 19b of side edge part is abutted is not shown), its lamination spacing between the 2nd plate fin 77 is set as advising Fixed length.1st cuts forming protrusion 12a to be located in the ora terminalis than each long edge part in the inner part (such as away from ora terminalis 1mm or more Inside (11 side of refrigerant flow path)) it is formed with the mode of the position of the ora terminalis interval of each long edge part.

As shown in FIG. 20 A, the 2nd forming protrusion 12b is cut between 11 groups of refrigerant flow path of flow path, in present embodiment In be non-flow path portion 18 (8 and Figure 19 referring to Fig.1) planar portions 20, the adjacent 2nd, which cuts forming protrusion 12b, has specified interval Mode form (referring to Fig.1 7).2nd cut forming protrusion 12b with and the 1st plate fin 66 in adjacent the 2nd plate wing of stacking direction The planar portions 20 of piece 77 (referring to Figure 20 B) abut, same as the 1st incision forming protrusion 12a, by it between the 2nd plate fin 77 Lamination spacing be set as defined length.

In addition, as shown in figure 21, each protrusion 12 (12a, 12aa, 12b) is by by the flat end of the 1st plate fin 66 A part of 19a, 19b and planar portions 20 cut forming and formed (hereinafter, protrusion 12 (12a, 12aa, 12b) is known as cutting Shape protrusion).Protrusion 12 (12a, 12aa, 12b) is shaped about cutting, cuts the incision of forming protrusion 12 (12a, 12aa, 12b) Shape ora terminalis Y and the 2nd fluid (such as air) of the folded interflow in plate fin 2a, the flowing as shown in the arrow of Figure 21 Direction is opposite, cuts forming standing piece Z and is arranged along the stream of the 2nd fluid.In the present embodiment, it will cut and shape protrusion 12 (12a, 12aa, 12b) cuts forming and is formed towards section substantially U-shaped as the flow direction opening of the 2nd fluid.

When by each plate fin 2a (the 1st plate fin 66 and the 2nd plate fin 77) and end plate 3 (3a, 3b) soldered joint, respectively cut It is split into shape protrusion 12 (12a, 12aa, 12b) and is fixed in plate fin 2a (1st plate fin 66 and the 2nd plate wing adjacent with its each top surface Piece 77), it is integrated with the connection of each plate fin 2a (the 1st plate fin 66 and the 2nd plate fin 77).

In addition, cutting forming protrusion 12a, 12aa and the 2nd for the 1st cuts forming protrusion 12b along the 2nd fluid (such as air) Flow direction be configured to linearly, but be also configurable to be staggered.

In addition, as shown in figure 22, made of 11 groups of U-bends of refrigerant flow path of plate fin 2a (the 1st plate fin 66) are bent The fin planar portions 21 of the end of the fold-back side of flow passage region P (referring to Fig.1 7) are also formed with multiple protrusions 22 (22a, 22b). Protrusion 22 (22a, 22b) is also formed in a manner of cutting and shaping fin planar portions 21 (hereinafter, also claiming protrusion 22 (22a, 22b) Protrusion 22 (22a, 22b) is shaped to cut).As shown in figure 22, the incision for cutting forming protrusion 22 (22a, 22b) shapes ora terminalis Y It is opposite with the stream of the 2nd fluid.In addition, cutting the downstream side that forming protrusion 22 (22a, 22b) is set to the boss hole 13 of positioning. It will be formed as the boss for making positioning near the incision forming protrusion 22a incision in the downstream side of the boss hole 13 of positioning The shape reduced is flowed in the downstream side in hole 13, such as the shape that the diffluence to the 2nd fluid is open with the shape of Ha.Than protrusion 22a Each center line for cutting forming protrusion 22b and deviating from the protrusion 22b in a downstream side with respective center line of side farther downstream Mode be configured to be staggered.

In addition, it is each cut forming protrusion 22 (22a, 22b) also with cut forming protrusion 12 (the 1st cut forming protrusion 12a, 12aa, the 2nd cuts forming protrusion 12b) equally, adjacent plate fin 2a (the 2nd plate wing in its each top surface is fixed in a manner of abutting Piece 77), the gap between adjacent plate fin 2a is set as defined length, and each plate fin 2a is connected to each other.

In addition, as shown in figure 17, in the end of plate fin 2a (the 1st plate fin 66 and the 2nd plate fin 77) (for example, collector The part other than flow passage region P in region H etc., plate fin 2a) it is formed with the boss hole 13 of positioning.The boss hole of positioning 13 are also formed in end plate 3a, 3b in the stacking of the two sides of the stacking direction of plate fin 2a (the 1st plate fin 66 and the 2nd plate fin 77) With stiffening plate 16a, 16b.It is packed into the boss hole 13 of positioning and multiple plate fin 2a (the 1st plate fin 66 and the 2nd plate fins is laminated 77) positioning pin fixture when makes it possible to accurately be laminated another plate fin 2a.In the present embodiment, link plate fin The linking part 9 (referring to Fig. 3) of the bolt of stiffening plate 16a, 16b of laminated body 2 and end plate 3a, 3b etc. is to be also used as positioning pin fixture Shape.

Moreover, the boss of the positioning at the both ends for being set to plate fin 2a (the 1st plate fin 66 and the 2nd plate fin 77) The outer peripheral portion in hole 13 is formed with hole peripheral part (hereinafter referred to as boss hole peripheral part) 13a of upper and lower bulging.Boss hole periphery Portion 13a forms the space different from the flow path that refrigerant flows.Specifically, as shown in figure 12, boss hole peripheral part 13a is abutted Between the stacking direction of plate fin 2a plate fin 2a (the 1st plate fin 66 and the 2nd plate fin 77) adjacent to each other, become holding The header areas supporting part in the lamination gap of plate fin 2a.

The boss hole peripheral part 13a formed around the boss hole 13 of positioning with header areas H is formed in (scheme by reference 17) entrance and exit this collector flow path 10 (peripheral flow path 10a connects flow path 10b, multiple-limb flow path 10c) at two is together Soldering is fixed in another collector flow path 10 and boss hole peripheral part 13a opposite in stacking direction, by plate fin 2a (the 1st plate wing Piece 66 and the 2nd plate fin 77) end connection be integrated.

In addition, as the refrigerant flow path 11 in the present invention, be also included within illustrated in present embodiment with refrigerant stream The orthogonal cross sectional shape in dynamic direction is the refrigerant flow path 11 of rectangular shape etc. in addition to circular shape.

In addition, being the two side sides for protruding from the stacking direction of plate fin 2a with refrigerant flow path 11 in the present embodiment It is illustrated for the shape of (the upper side and lower side), but may be refrigerant flow path 11 with the layer of only projecting plate fin 2a The mode of the unilateral side (upside or downside) in folded direction is formed.In addition, in the present invention, circular shape also includes round, oval With the compound curve shape etc. formed by closed curve.

About heat exchanger 1 formed as described above, illustrate its function and effect below.

Firstly, the flowing and heat exchange action to refrigerant are illustrated.

As shown in Fig. 1, Fig. 4, Figure 10 and Figure 13, refrigerant is from the inflow pipe connecting with the one end of plate fin laminated body 2 4, via the collection tube opening 88a of inflow side, the collector flow path 10 via each plate fin 2a is the outer circumfluence collected around tube opening 88a Road 10a, connection flow path 10b and multiple-limb flow path 10c, flow to 11 groups of refrigerant flow path.Flow to the refrigerant stream of each plate fin 2a The refrigerant that 11 groups of road turns back from its outlet side flow path portion 11a to return road side flow path portion 11b, via the collector flow path 10 of outlet side With the collection tube opening 88b of outlet side, the refrigerant circuit of refrigeration system is flowed to from effuser 5.

When refrigerant flows in refrigerant flow path 11, with the sky between the plate fin 2a lamination of plate fin laminated body 2 Gas carries out heat exchange.

It herein, can be from the collection tube opening 88a of entrance side be become via 11 groups of streams of refrigerant flow path in heat exchanger 1 To become outlet side collector flow path 14 refrigerant gas as shown in the arrow of Figure 16, from refrigerant circulation with gap 25 via The multiple diffluence pass 26 for being formed in the tube wall of flow-dividing control pipe 24 flow in flow-dividing control pipe 24, from the collection tube opening of outlet side 88b is flowed out to effuser 5.

As shown in figure 15, the diffluence pass 26 for being set to flow-dividing control pipe 24 is formed as with the collection tube opening to outlet side 88b is gone, and aperture becomes smaller.It utilizes such structure, the refrigerant flowed in 11 groups of refrigerant flow path of each flow path can be made Amount is impartial.

That is, about heat exchanger 1, by the way that the diameter of refrigerant flow path 11 is reduced, the system of the collector flow path 14 of outlet side The crushing of cryogen also increases several times compared with the crushing of the refrigerant of the collector flow path 10 of entrance side.On the other hand, refrigerant Distribution situation larger impact of the shunting by crushing.Accordingly, with respect to heat exchanger 1, even if the setting of flow-dividing control pipe 24 is existed The collector flow path 10 of the entrance side of the common-sense of the prior art, the crushing of the collector flow path 14 of outlet side also high several times, therefore The refrigerant flowed in refrigerant flow path 11 dependent on outlet side collector flow path 14 crushing, so can not as design that Sample shunts.

However, flow-dividing control pipe 24 is set to the collection of the higher outlet side of crushing in the heat exchanger 1 of present embodiment Pipe flow path 14.Utilize such structure, the distribution of pressure can be controlled so as to shunting have larger impact, than entering The crushing distribution of axis direction in the high several times of crushing of the collector flow path 10 of mouth side, outlet side collector flow path 14 becomes equal It is even.Therefore, the refrigerant shunt volume flowed in 11 groups of refrigerant flow path of each flow path can be homogenized.

In addition, being imported into from the refrigerant that pipe 4 flows into is flowed by the collection tube opening 88a of entrance side about heat exchanger 1 The refrigerant flow path 11 of the inside of each plate fin 2a is flowed into the collection tube opening 88b of outflux side, flows out from effuser 5.

At this point, due to 11 groups of refrigerant flow path each flow path generation crushing, with away from flow into the farther away plate fin 2a of pipe 4 Refrigerant flow path 11 (in Figure 16, the refrigerant flow path 11 of the plate fin 2a more to keep right) compare, refrigerant be easier away from It flows into the refrigerant flow path 11 (in Figure 16, the refrigerant flow path of the plate fin 2a more to keep left) of the closer plate fin 2a of pipe 4 Flowing.In other words, a possibility that generating deviation there are the flow of refrigerant.

However, being inserted into flow-dividing control pipe 24 inside the collection tube opening 88b of outlet side makes flow-dividing control as shown in figure 16 (scheming the position that being set to of the outlet side of pipe 24, i.e. flow-dividing control pipe 24 is closer to the collection tube opening 88b of refrigerant outflow In 16, be closer to left side part) diffluence pass 26 opening area be less than flow-dividing control pipe 24, be set to further from Collect the opening area of the diffluence pass 26 of the position (in Figure 16, being closer to the part on right side) of tube opening 88b, thus, it is possible to increase Add the refrigerant of the diffluence pass 26 of the outlet side (close to the side of collection tube opening 88b) of the 1st fluid by flow-dividing control pipe 24 Crushing.In other words, position making flow-dividing control pipe 24, being set to collection tube opening 88b further from the outflow of the 1st fluid The opening area of diffluence pass 26 be greater than flow-dividing control pipe 24, be set to be closer to collection tube opening 88b position diffluence pass 26 opening area, thus, it is possible to increase the refrigerant of the diffluence pass 26 of the outlet side of the 1st fluid by flow-dividing control pipe 24 Crushing.

For example, as shown in Figure 15 and Figure 16, being set in multiple diffluence pass 26 of flow-dividing control pipe 24, flow-dividing control pipe 24 Be set to from the 1st fluid outflow outlet side collection tube opening 88b highest distance position diffluence pass 26b opening area be greater than point The opening of the diffluence pass 26a of the collection tube opening 88b proximal most position for being set to the outlet side from the outflow of the 1st fluid of flow control tubulation 24 Area.

It utilizes such structure, does not generate the bias current of refrigerant flow as described above, and each plate fin 2a can be made Inside 1 fluid flowing path, that is, refrigerant flow path 11 refrigeration dose it is impartial, can be improved heat exchanger effectiveness.

Heat exchanger effectiveness of the heat exchanger 1 at 11 groups of parts of refrigerant flow path improves as a result, and it is higher to become the thermal efficiency Heat exchanger.

In addition, about multiple diffluence pass 26, it can be identical for the opening area of adjacent diffluence pass 26, as long as and being configured to By flow-dividing control pipe 24 as a whole come when observing, the collection for being set to the outlet side from the outflow of the 1st fluid of flow-dividing control pipe 24 The opening area of the farther away diffluence pass 26 of tube opening 88b is greater than the outlet of flow-dividing control pipe 24 being set to from the outflow of the 1st fluid The opening area of the collection closer diffluence pass 26 of tube opening 88b of side, then being included in present embodiment.For example, multiple points In head piece 26, even if the opening area of 2 adjacent diffluence pass 26 is identical, as long as compared with this 2 adjacent diffluence pass 26, if The opening area for being placed in collection other farther away diffluence pass 26 of tube opening 88b of the outlet side away from the outflow of the 1st fluid is adjacent greater than this 2 diffluence pass 26 opening area, then being also contained in present embodiment.

It shunts refrigerant by flow-dividing control pipe 24 uniformly to be configured to only perforate in flow-dividing control pipe 24 in addition, above-mentioned The simple structure of diffluence pass 26 out, therefore can be provided with cheap price.

In addition, as shown in figure 15, flow-dividing control pipe 24 and stiffening plate 16a in the heat exchanger 1 of present embodiment are constituted It is integrated.It utilizes such structure, only by installation stiffening plate 16a, flow-dividing control pipe 24 can be inserted into and be arranged in collector stream In road 14.Utilize such structure, using the installation flow-dividing control pipe 24 such as welding the case where etc. under, can prevent from being worried The qualities such as the bad and following refrigerant leakage of the engagement of plate fin caused by the brazing of plate fin brazed part are bad, can Obtain high-quality and efficient heat exchanger.

In addition, stiffening plate 16a is connect with flow-dividing control pipe 24 and effuser 5 by it and between stiffening plate 16a and effuser 5 Potential difference be less than flow-dividing control pipe 24 and effuser 5 are directly connected in the case where potential difference between the two material shape At.It utilizes such structure, can prevent to generate not in the case where being directly connected to flow-dividing control pipe 24 and effuser 5 Congener metal contact corrosion, can be significantly increased long term reliability.Especially, pipe 4 and effuser 5 are flowed into It is made of copper pipe and the case where flow-dividing control pipe 24 is made of stainless steel etc. is more, for air conditioner heat exchanger, energy Enough expect significant effect, is effective.

In addition, flow-dividing control pipe 24 is set to stiffening plate 16a in the present embodiment, but it is set to the side end plate 3a.Separately Outside, for the type of unused stiffening plate 16a, the opposite face of end plate 3a can also be provided with flow-dividing control pipe 24 and outflow Pipe 5.

In addition, in the present embodiment, the case where instantiating the shape that 11 groups of refrigerant flow path are U-bend, but even if 11 groups of refrigerant flow path linear to illustrate in aftermentioned embodiment 2, can similarly apply.

As described above, can also make even if the heat exchanger 1 of present embodiment is plate fin laminated type to refrigerant flow path The shunting for the refrigerant that 11 groups of each flow path is gone is uniform, improves heat exchanger effectiveness, but also have the effect of as described below.

That is, in general, in this heat exchanger, the header areas H of plate fin laminated body 2 apply refrigerant compared with Strong pressure makes the dilatancies such as the part a certain header areas H of collector flow path 10.

However, the heat exchanger 1 about present embodiment, the header areas corresponding part of plate fin laminated body 2, that is, cover The part corresponding with header areas of end plate 3a, 3b of the both sides (the upper side and lower side) of plate fin laminated body 2, by linking part 9 With end plate 3a, 3b (referring to Fig. 3) connected to each other.It utilizes such structure, can prevent the header areas of end plate 3a, 3b from corresponding to portion Divide dilatancy outward.

That is, in fig. 8, to the higher pressure for the refrigerant that header areas part applies, end plate 3a above is upward Effect, the end plate 3b in lower section are acted on downwards, become header areas part to the top of end plate 3a and the lower section of end plate 3b respectively Shape.However, the inflow that the upward dilatancy power that end plate 3a above applies also is connect by arrival with the end plate 3a of top The downward pressure of refrigerant present in pipe 4.Therefore, become from the downward pressure for flowing into refrigerant present in pipe 4 The situation offseted with upward dilatancy power can prevent the foreign side of the header areas corresponding part of end plate 3a to the upper side Dilatancy.In addition, as described above, can be by the way that the end plate 3a connection of end plate 3b and top to be inhibited to the end for being applied to lower section The downward dilatancy power of plate 3b.It utilizes such structure, the whole dilatancy of plate fin laminated body 2 can be reduced.

Especially, the heat exchanger 1 of present embodiment is constituted are as follows: end plate 3a, 3b header areas corresponding part it is outer Surface is provided with stiffening plate 16a, 16b, and stiffening plate 16a, 16b is linked by linking part 9 each other, and end plate 3a, 3b are pressed from foreign side Plate fin laminated body 2.It utilizes such structure, the intensity of the header areas corresponding part of end plate 3a, 3b can be by stiffening plate 16a, 16b self rigidity is strengthened, and the dilatancy of the header areas corresponding part can be strongly inhibited.

In addition, due to being provided with stiffening plate 16a, 16b, in the present embodiment as illustrated, even if making refrigerant Flow path 11 is formed as U-shaped, can also be reliably suppressed the dilatancy of header areas corresponding part.That is, in present embodiment Heat exchanger 1 in, plate fin laminated body 2 constitute are as follows: be bent into the refrigerant flow path 11U shape for being set to plate fin 2a substantially U-shaped, the collector flow path 10 of entrance side and the collector flow path 14 of outlet side concentrate on the one end of plate fin 2a.In such knot In structure, in the part that the collector flow path 10 of entrance side and the collector flow path 14 of outlet side are concentrated, the pressure of entrance side and outlet side The pressure of 2 times of superposition and application.However, with the structure of stiffening plate 16a, 16b as described above, even if applying Such 2 times of refrigerant pressure, also can fight the pressure and be reliably prevented dilatancy.

Therefore, it according to the structure of the heat exchanger 1 illustrated in the present embodiment, even if refrigeration dose is more, or uses The refrigerant of the higher environment reply type of compression ratio, can also prevent the expansion of the header areas part of plate fin laminated body 2 Deformation.Therefore, according to present embodiment, it can be used as the heat exchanger of the higher state of pressure of refrigerant, it can be made High-efficient heat exchanger.

However, being formed in the refrigerant flow path of plate fin 2a by reduction in the heat exchanger 1 of present embodiment The sectional area of concave groove, the diameter that can be realized 11 groups of refrigerant flow path of each flow path area reduce, and improve heat exchanger effectiveness simultaneously And promote miniaturization.

That is, the dilatancy at the header areas corresponding part of plate fin laminated body 2 can be prevented, while realizing refrigerant The diameter of the flow path cross sectional area of flow path 11 reduces and improves heat exchanger effectiveness, and promotes to minimize.

In addition, stiffening plate 16a, 16b is provided only on header areas corresponding part, therefore can will add due to being provided with Strong plate 16a, 16b and increased dilatation is suppressed to minimum limit.Therefore, the miniaturization of heat exchanger can not be destroyed, and It prevents dilatancy and improves heat exchanger effectiveness.

In addition, when the linking part 9 of bolt etc. can be used as plate fin 2a, end plate 3a, 3b and stiffening plate 16a, 16b being laminated Guidance pin (fixture).It utilizes such structure, can be improved the stacking precision of plate fin 2a, and also improve productivity.

In addition, in the heat exchanger 1 of present embodiment, it is arranged in 11 groups of refrigerant flow path of plate fin 2a to turn back into The mode of substantially U-shaped is formed.It utilizes such structure, plate fin 2a (extension length size) can not be expanded and lengthen refrigeration Agent flow path length.

Thereby, it is possible to improve the heat exchanger effectiveness of refrigerant and air, reliably make refrigerant become supercooling state and Improve the efficiency of refrigeration system.Also, it also can be realized the miniaturization of heat exchanger.

Moreover, being formed with narrow between 11 groups of refrigerant flow path of outlet side flow path portion 11a and return road side flow path portion 11b Seam 15 becomes the form that heat is separated.It utilizes such structure, the outlet side flow path portion from 11 groups of refrigerant flow path can be prevented The heat transfer gone to return road side flow path portion, so that refrigerant efficiently supercooling, can further increase heat exchanger effectiveness.

In addition, being provided with multiple cut in the flow passage region P of plate fin laminated body 2 in the heat exchanger 1 of present embodiment It is split into shape protrusion 12 (12a, 12b).It utilizes such structure, can be improved the heat exchanger effectiveness of flow passage region P.It is described in detail, Cut the stream that forming ora terminalis Y with the 2nd fluid of the folded interflow in plate fin 2a are cut in forming protrusion 12 (12a, 12b) with it The opposite mode in dynamic direction is formed.It utilizes such structure, the interval between plate fin lamination can be made certain, while making to be easy The dead water region that the downstream side of incision forming protrusion 12 (12a, 12b) generates is smaller and is cutting forming ora terminalis Y portion generation Leading edge effect.Moreover, because cutting forming in the mode opposite with the flow direction of the 2nd fluid and being formed, therefore can also make It is small to the flow resistance of the 2nd fluid.Therefore, the flow path resistance for being able to suppress the flow passage region P of plate fin laminated body 2 increases, and And its heat exchanger effectiveness is significantly increased.

In addition, shaping protrusion 12 (12a, 12b) relative to the 2nd fluid with staggered row about the incision that plate fin 2a is arranged in The configuration structures for waiting incisions forming protrusion 12 that column or downwind side and weather side are formed, can show which various structures more.Therefore, Protrusion 12 (12a, 12b) is shaped about cutting, is selected to improve heat according to the specification of heat exchanger, structure and the needs of user The optimum structure of conductivity.

In addition, each incision forming protrusion 12 (12a, 12b) is formed as utilizing such structure, without the side flowed from air To the direction intersected with refrigerant flow path 11, planar portions 20 between refrigerant flow path 11 for sink-mark prevention (the meat that is recessed intentionally Steal body).Therefore, with make to cut forming protrusion 12b and swelled in a manner of cylindrical protrusion etc. and compared with the structure that is formed, refrigerant Planar portions 20 between flow path 11 can reduce the amount for the size that do not need to be recessed intentionally, can correspondingly make plate fin 2a Width narrow.In other words, heat exchanger 1 can be made to minimize.

In addition to this, the ora terminalis that plate fin 2a is configured to its long side part deviates the alternate position of refrigerant flow path 11 and matches Setting (referring to Fig.1 1) thus has narrow plane 20a and wide cut plane 20b.In addition, plate fin 2a is configured in wide cut plane 20b Side is formed with incision forming protrusion 12b, and the top surface for cutting forming protrusion 12b is fixed in the narrow plane of adjacent plate fin 2a 20a.It utilizes such structure, the size etc. of the side narrow plane 20a of plate fin 2a can not also be increased.That is, flat using wide cut Face 20b is arranged in the wide cut side plane 20b and cuts forming protrusion, becomes the knot for being fixed in narrow plane 20a in a manner of abutting Structure therefore without the size of the side narrow plane 20a for the long side part for increasing plate fin 2a, and still protects narrow plane 20a It holds as former state, heat exchanger 1 can be promoted with such miniaturisation.

In addition, forming protrusion 12 (12a, 12b) is cut when it is with each plate fin 2a and end plate 3a, 3b soldered joint, Gu It is connected to the adjacent plate fin 2a in its each top surface.It utilizes such structure, incision forming protrusion 12 (12a, 12b) also achieves will be each Plate fin 2a links the effect being integrated, and can be improved the rigidity of plate fin laminated body 2.

Especially, in the present embodiment, it is divided into the extended line top of 11 groups of refrigerant flow path of connection flow path 10b non- Flow path portion 18 (8 and Figure 19 referring to Fig.1), using non-flow path portion 18, a part i.e. the 2nd for being provided with protrusion 12 (12a, 12b) is cut It is split into shape protrusion 12b.It utilizes such structure, can securely maintain folded between the plate fin 2a of 11 groups of parts of refrigerant flow path Lamellar spacing.Thereby, it is possible to make the air-flow of the air at 11 groups of parts of refrigerant flow path as no fluctuation stable fluid, mention High heat exchanger effectiveness.

It is easy in forming protrusion 12a raising intensity in addition, being set to the 1st of the long side part of plate fin laminated body 2 and cutting The intensity of the long edge part of the plate fin laminated body 2 to die down, is effective.Especially, about being set to plate fin laminated body 2 Forming protrusion 12aa is cut in the 1st of the both side edges part of slit 15, improve separated because being provided with slit 15, strength reduction The intensity of slit edge point.Therefore, it utilizes such structure, the 1st, which cuts forming protrusion 12aa, can be improved heat exchanger effectiveness Upwards, while it being also prevented from slit deformation nearby, made effective.

In addition, the 1st incision forming protrusion 12aa for being set to the both side edges part of slit 15 can also be across slit 15 Mode is arranged.However, in this case, between 11 groups of refrigerant flow path of outlet side flow path portion 11a and return road side flow path portion 11b Heat transfer occurs, heat insulation may be caused to reduce because of slit 15.However, the 1st is cut and shapes protrusion such as present embodiment 12aa is provided separately respectively when the both side edges part of slit 15, is effective a possibility that without such heat transfer.Separately Outside, or the 1st, which cuts forming protrusion 12aa, is set to the position with 15 interval of slit.

In addition, the be set to the long side part of plate fin laminated body 2 and the two side portions of slit 15 the 1st cuts forming protrusion 12aa is set to the position with the ora terminalis interval of the plate fin long side of plate fin laminated body 2.It utilizes such structure, The plate fin 2a of plate fin laminated body 2 generates condensed water, the condensed water along plate fin 2a ora terminalis and the form that is fluidly discharged When, it can prevent from cutting the water flow that forming protrusion 12aa stops condensed water by the 1st in advance, be trapped in the 1st incision forming protrusion 12aa partially generates various failures.Therefore, it utilizes such structure, the heat exchanger for high reliablity can be allowed to.

In addition, also being set in the heat exchanger 1 of present embodiment in the refrigerant flow path U-bend side end of plate fin 2a It is equipped with incision forming protrusion 22 (22a, 22b).It utilizes such structure, can be improved the plate fin 2a of no refrigerant flow path 11 U-bend side end heat exchange contribution degree.Therefore, heat exchanger effectiveness can be improved in the flow passage region overall length of plate fin 2a, The thermal efficiency of heat exchanger 1 can be improved.

Especially, there is the boss hole 13 of positioning in the U-bend side end of plate fin 2a and side is dead water region downstream, because This heat exchange contribution degree becomes extremely low.However, in the present embodiment, being provided in the downstream side of the boss hole 13 of positioning more A incision shapes protrusion 22 (22a, 22b).It utilizes such structure, can be improved the 13 downstream side universe of boss hole of positioning Heat exchange contribution degree.

Especially, as shown in figure 22, the straight close incision forming protrusion 22a in the downstream side of the boss hole 13 of positioning has and makes The shape that the stream in the downstream side of the boss hole 13 of positioning reduces.It utilizes such structure, can make in positioning boss hole 13 Dead water region minimization that downstream side generates, that heat exchange contribution degree is low, can further increase heat exchange with such degree Efficiency.

In addition to this, each to cut forming protrusion 22 (22a, 22b) and be set to being cut into for flow passage region P (referring to Figure 25) Shape protrusion 12 (12a, 12b) is equally formed in a manner of cutting forming, cuts forming ora terminalis Y with the stream phase with the 2nd fluid Pair shape.It utilizes such structure, leading edge effect can be generated cutting forming end edge portion point, correspondingly can further mentioned High heat exchanger effectiveness.

Moreover, be set to the downstream side of the boss hole 13 of positioning multiple incisions forming protrusion 22,23 become relative to The stream of 2nd fluid and sinuous be staggered.It utilizes such structure, all multiple incision forming protrusions 22,23 can be effective Ground plays heat exchange function, and heat exchange contribution degree is high.

In addition, each top for cutting forming protrusion 22 (22a, 22b) is also fixed in adjacent plate fin 2a, plate fin 2a's Short side part is fixedly linked with laminated arrangement.It utilizes such structure, also can be improved the rigidity of plate fin laminated body 2.

In addition, in the present embodiment, the incision being arranged near the downstream side of the boss hole 13 of positioning is shaped prominent It plays 22 to cut forming and be formed as the section substantially U-shaped being open to the flow direction of the 2nd fluid, but is not limited to the structure. Cutting forming protrusion 22 can be to cut the opposite structure of shaping form with a pair of of substantially L-shaped, as long as having can will The shape that the stream in the downstream side of the boss hole 13 of positioning reduces.

(embodiment 2)

As shown in Figure 23~Figure 26, shape of the heat exchanger 201 of embodiments of the present invention 2 at 11 groups of refrigerant flow path Shape collects different from the heat exchanger 1 of embodiments of the present invention 1 on the setting position of tube opening.In the present embodiment, to The part with the same function of heat exchanger 1 of embodiments of the present invention 1 marks identical appended drawing reference, with different parts Attach most importance to and is illustrated.

Figure 23 is the perspective view for indicating the appearance of the plate fin laminated type heat exchanger in embodiments of the present invention 2.Figure 24 be the vertical view of the plate fin of the composition plate fin laminated body of the plate fin laminated type heat exchanger of embodiments of the present invention 2 Figure.Figure 25 is that a part of the structure of the plate fin in the plate fin laminated type heat exchanger by embodiments of the present invention 2 is put The exploded view indicated greatly.Figure 26 is the plate fin stacking in the plate fin laminated type heat exchanger by embodiments of the present invention 2 The refrigerant flow path group partial cut of body is come the perspective view that indicates.

As shown in Figure 23~Figure 26, about the heat exchanger 201 of embodiments of the present invention 2, it is set to plate fin 2a's 11 groups of refrigerant flow path be it is linear, in the collection tube opening 88a for the entrance side that is disposed at one end thereof, be provided with out in the other end The collection tube opening 88b of mouth side.Moreover, the collection tube opening 88a of entrance side with flow into pipe 4 connect, the collection tube opening 88b of outlet side and Effuser 5 connects.The heat exchanger 201 of present embodiment is configured to refrigerant can be linearly from the one end of plate fin 2a It flows and flows out to the other end.

In addition, the collector flow path 10 being formed in around the collection tube opening 88a of entrance side includes the parameatal periphery of collector Flow path 10a, connection flow path 10b and multiple-limb flow path 10c.Flow path 10b is connected from peripheral flow path 10a to the short side of plate fin 2a The mode that direction extends is formed, and is connected with multiple-limb flow path 10c.The collector flow path 14 of outlet side is also with the collector stream with entrance side The identical mode in road 10 is constituted, and the two constitutes symmetrical shape (referring to Figure 24).

In addition, end plate 3a, 3b of 2 two sides of plate fin laminated body do not use stiffening plate 16a, 16b, and linked by linking part 9, As the structure that can prevent the dilatancy at the header areas H at the both ends end plate 3a, 3b.

Heat exchanger 201 formed as described above in addition to 11 groups of refrigerant flow path be formed as caused by U-shaped effect it Outside, identical as the heat exchanger 1 illustrated in the embodiment 1 there are also detailed structure, function, effect, thus omit herein with The detailed description of the identical structure of heat exchanger 1, function and the effect of embodiment 1 etc..

In addition, the incision in the U-bend side end setting of the plate fin 2a of the heat exchanger 1 of embodiment 1 shapes protrusion 22, in the present embodiment, can be appropriately arranged in the header areas of entrance and exit two sides, using be set to above-mentioned U The identical technical idea of incision forming protrusion 22 (22a, 22b) of the curved side end of shape, such as in the collector stream for becoming dead water region The downstream side on road 10 is formed, and is appropriately arranged with.

(embodiment 3)

Embodiments of the present invention 3 are the heat exchanges of the heat exchanger 1 and embodiment 2 using above-mentioned embodiment 1 At least one and the refrigeration system that constitutes of device 201.

In the present embodiment, as an example of refrigeration system, illustrate conditioner.Figure 27 indicates of the invention The figure of the refrigeration cycle of conditioner in embodiment 3.Figure 28 is the air conditioning dress in embodiments of the present invention 3 The summary sectional view for the indoor unit set.

In Figure 27 and Figure 28, conditioner 301 in embodiments of the present invention 3 by outdoor unit 51 and with outdoor The indoor unit 52 that machine 51 connects is constituted.It is configured in outdoor unit 51: for compressing the compressor 53 of refrigerant；It can be supplied in cooling supply Switch the four-way valve 54 of refrigerant circuit when warm operating；Outdoor heat for swapping the heat of refrigerant and outside air is handed over Parallel operation 55；With the pressure reducer 56 for depressurizing refrigerant.In addition, machine 52 is configured with indoors: being used for refrigerant and interior The indoor heat exchanger 57 that the heat of air swaps；With indoor fan 58.In conditioner 301, refrigerant is utilized Circuit links compressor 53, four-way valve 54, indoor heat exchanger 57, pressure reducer 56 and outdoor heat exchanger 55, forms heat pump Formula refrigeration cycle.

In present embodiment heating and refrigerating agent circuit, use using tetrafluoropropene or trifluoro propene as basis, The refrigerant that difluoromethane, pentafluoroethane or tetrafluoroethane are mixed respectively with the mixing of 2 ingredients or 3 ingredients, makes the whole world The potentiality that warms is for 5 or more, 750 hereinafter, preferably 350 hereinafter, further preferably 150 or less.

In conditioner 301, when for blowdown firing, four-way valve 54 switches over the discharge side so that compressor 53 It is connected to outdoor heat exchanger 55.The refrigerant for becoming high temperature and pressure by the refrigerant that compressor 53 compresses as a result, passes through four-way Valve 54 is transported to outdoor heat exchanger 55.Then, refrigerant carries out heat exchange with outside air and radiates, and becomes the liquid of high pressure Cryogen is sent to pressure reducer 56.Refrigerant is depressurized and becomes the two-phase system cryogen of low-temp low-pressure in pressure reducer 56, to room Interior machine 52 is sent out.Indoors in machine 52, refrigerant enters the room heat exchanger 57, carries out heat exchange with room air and absorbs heat, Evaporation is gasificated as the gas refrigerant of low temperature.At this time room air it is cooled and to indoor carry out cooling supply.Then, refrigerant returns Outdoor unit 51 is returned, returns to compressor 53 via four-way valve 54.

In warming operation, four-way valve 54 is switched over so that the discharge side of compressor 53 is connected to indoor unit 52.As a result, The refrigerant for becoming high temperature and pressure by the compressed refrigerant of compressor 53, is sent to indoor unit 52 by four-way valve 54.High temperature The refrigerant of high pressure enters the room heat exchanger 57, carries out heat exchange with room air and radiates, and is cooled and becomes high pressure Liquid refrigerant.At this point, room air is heated, heat to interior.Later, refrigerant is transported to pressure reducer 56, It is depressurized in pressure reducer 56, becomes the two-phase system cryogen of low-temp low-pressure, be transported to outdoor heat exchanger 55, with outside air It carries out heat exchange and evaporates gasification, return to compressor 53 via four-way valve 54.

It, can be in outdoor heat exchanger 55 or indoor heat exchange about conditioner 301 formed as described above The heat exchanger 1 of above-mentioned embodiment 1 or the heat exchanger 201 of embodiment 2 are used in device 57.Utilize such knot Structure, heat exchanger 1 and heat exchanger 201 do not have dilatancy and small-sized and efficient at the part of header areas, therefore can For the high high-performance refrigeration system of energy saving.

Utilization possibility in industry

As described above, the present invention provides a kind of heat exchanger and the high performance system high using the energy saving of the heat exchanger Cooling system, which can be made to shunt uniformly by the crushing distribution in control outlet-side header flow path, equal by making to shunt Uniform flow diameter reduces and improves heat exchanger effectiveness, is thus small-sized and efficient.Therefore, can be widely used for home-use In heat exchanger used in air-conditioning and Industrial air conditioner etc. and various refrigeration equipments etc., industrially there is biggish value.

Description of symbols

1,201 heat exchanger

2 plate fin laminated bodies

2a plate fin

3,3a, 3b end plate

4 flow into pipe (inlet header)

5 effusers (outlet header)

9 linking parts (screw bolt and nut)

10 collector flow paths

10a peripheral flow path

10b connection flow path

10c multiple-limb flow path

11 refrigerant flow paths (the 1st fluid flowing path)

The outlet 11a side flow path portion

The return road 11b side flow path portion

12 cut forming protrusion

12a, 12aa protrusion (the 1st cuts forming protrusion)

12b protrusion (the 2nd cuts forming protrusion)

13 boss holes

The hole 13a peripheral part (boss hole peripheral part)

14 collector flow paths

15 slits

16a, 16b stiffening plate

17 shunt impact walls

18 non-flow path portions

19a, 19b flat end

20 planar portions

The narrow plane of 20a

20b wide cut plane

21 fin planar portions

22,22a, 22b protrusion (cutting forming protrusion)

24 flow-dividing control pipes (the 1st divided fluid stream pipe)

Gap is used in the circulation of 25 refrigerants

26,26a, 26b diffluence pass

27 hollow frames

51 outdoor units

52 indoor units

53 compressors

54 four-way valves

55 outdoor heat exchangers

56 pressure reducers

57 indoor heat exchangers

58 indoor fans

66 the 1st plate fins

The 1st plate-shaped member of 66a

The 2nd plate-shaped member of 66b

77 the 2nd plate fins

88,88a, 88b collection tube opening

301 conditioners.

Claims (4)

1. a kind of heat exchanger characterized by comprising

Plate fin laminated body has the flow path for the flowing of the 1st fluid；With

Multiple plate fins of the plate fin laminated body are constituted,

The multiple plate fin respectively has flow passage region and header areas,

The flow passage region has multiple 1st fluid flowing paths abreast flowed for the 1st fluid,

The header areas has the multiple collector flow paths being connected to the multiple 1st fluid flowing path,

The multiple 1st fluid flowing path is formed by such a way that the multiple plate fin is respectively arranged with concave groove,

The multiple collector flow path has entrance side collector flow path and outlet-side header flow path,

The outlet-side header flow path is configured to the evaporation outlet of the 1st fluid,

The outlet-side header flow path is provided with the 1st fluid for shunting the fluid into the multiple 1st fluid flowing path for the described 1st Isocon.

2. heat exchanger as described in claim 1, it is characterised in that:

The header areas has the collection tube opening of the 1st fluid outflow,

The 1st divided fluid stream pipe has multiple 1st divided fluid stream mouths,

The multiple 1st divided fluid stream mouth is configured to, and the 1st divided fluid stream pipe is set to from collection tube opening position farther out The opening area for the 1st divided fluid stream mouth set, greater than being set to from the collection tube opening compared with peri position for the 1st divided fluid stream pipe The opening area for the 1st divided fluid stream mouth set.

3. heat exchanger as claimed in claim 1 or 2, it is characterised in that:

Constitute the multiple 1st fluid flowing path in such a way that U-shaped is bent into substantially U-shaped, so that the header areas collection In be formed in the multiple respective one end of plate fin.

4. a kind of refrigeration system, it is characterised in that:

Use heat exchanger described in any one of claims 1 to 33 as the heat exchanger for constituting refrigeration cycle.