CN208091295U - Heat exchanger - Google Patents

Abstract

A kind of heat exchanger, it is equipped with multiple lattices (83,84) that the inside of total collection pipe (80) is separated into multiple spaces, in the heat exchanger, multiple lattices (83,84) are constituted by the end lattice (83) being arranged near the end of total collection pipe (80) and the both ends central divider (84) more in the inner part being arranged in than total collection pipe (80), and make the rigidity of end lattice (83) more than the rigidity of the central divider (84), to improve intensity.

Description

Heat exchanger

Technical field

The utility model is related to a kind of ends of more flat tubes to be connected to the heat exchanger on total collection pipe.

Background technology

So far, make the heat exchanger that fluid carries out heat exchange known.Patent Document 1 discloses this Heat exchanger.

The heat exchanger has：More flat tubes (heat-transfer pipe), the more flat tubes are respectively provided with many refrigerant streams Road；The end of total collection pipe, the more flat tubes is connected on the total collection pipe；And lattice, the lattice connect It is connected on the inside of total collection pipe, and the inside of the total collection pipe is separated into multiple spaces.In the heat exchanger, refrigerant warp After being diverted in multiple spaces by isocon, flowed into flat tube from each space.Flat Bottomhole pressure refrigerant with it is flat Air around flat pipe carries out heat exchange, be used to heat, the cooling air.

Existing technical literature

Patent document

Patent document 1：Japanese Laid-Open Patent Publication Laid-Open 2012-163319 bulletins

Utility model content

Utility model technical problems to be solved-

Here, only (one side) is connected with more flat tubes on a direction of total collection pipe, and in the opposite direction (opposite side) is not connected with flat tube.Compared with the part for being connected with flat tube, it is not connected with the part of flat tube It is easy to generate bending.In particular, in the case of using above-mentioned heat exchanger in heat-pump type air-conditioner, due in total collection pipe The pressure difference of the refrigerant of middle flowing is larger, thus as shown in figure 11, causes to be straight total as being represented by dashed line originally Concetrated pipe is deformed into arch.

When total collection pipe is deformed into arch, powerful pulling force is applied on flat tube, and flat tube is caused to deform.Once flat Flat pipe deforms, and the shape in the section of refrigerant flow path also just deforms.Specifically, the refrigerant flow path of flat tube Aspect ratio changes, and the compressive resistance of flat tube reduces.In this regard, if the wall thickness for increasing flat tube improves intensity, or Increase the wall thickness of total collection pipe to prevent from being deformed into arch, it will be able to avoid the above problem, but, thus cannot achieve hot friendship The lightweight of parallel operation, it may appear that cost improves this problem.

The utility model is exactly to complete in view of the above problems, its object is to：It is connected in the end of more flat tubes In heat exchanger on total collection pipe, it can accomplish that the light-weighted structure of heat exchanger can be achieved, and by inhibiting total collection The deformation for closing pipe, to inhibit the strength reduction of heat exchanger itself.

To solve the technical solution-of technical problem

For this new project of the above problem of solution heat exchanger, the inventor of the utility model is found that using such as Lower structure can solve the project, so as to complete the utility model.

Premised on heat exchanger, which includes the first aspect of the disclosure：More flat tubes 63；Total collection pipe 80, the end of the more flat tubes 63 is connected on the total collection pipe 80；And multiple lattices 83,84, it is multiple described Lattice 83,84 is bonded on the inside of the total collection pipe 80, and the total collection pipe 80 is separated into inside and outside and should The inside of total collection pipe 80 is separated into multiple spaces.

Moreover, the heat exchanger is characterized in that：Multiple lattices 83,84 are by being arranged near total collection It closes the end lattice 83 near the end of pipe 80 and is arranged in the intermediate separation than the both ends of the total collection pipe 80 more in the inner part Portion 84 is constituted, and the rigidity of the end lattice 83 is bigger than the rigidity of the central divider 84.

The second aspect of the disclosure is characterized in that in the first aspect, the end lattice 83 is arranged in described total Near the both ends of concetrated pipe 80.

The third aspect of the disclosure is characterized in that, in first or second aspect, the end lattice 83 and described Central divider 84 is the demarcation strip formed by plank respectively.

In above-mentioned first to the third aspect, because the rigidity of end lattice 83 is bigger than the rigidity of central divider 84, So the compressive resistance of end lattice 83 improves.As a result, with the case where total collection pipe 80 bends to arch in the prior art phase Than 80 unbending state of total collection pipe can be kept.

The fourth aspect of the disclosure is characterized in that, in first to the third aspect in either side, the end part every The thickness on the length direction of the total collection pipe 80 in portion 83 is than the central divider 84 in the total collection Thickness on the length direction of pipe 80 is big.

In the fourth aspect, because the thickness of end lattice 83 is bigger than the thickness of central divider 84, So the compressive resistance of end lattice 83 improves.As a result, with the case where total collection pipe 80 bends to arch in the prior art phase Than 80 unbending state of total collection pipe can be kept.

5th aspect of the disclosure is characterized in that in a third aspect, the central divider 84 is respectively by a plate Material is constituted, and the end lattice 83 is constituted by multiple planks are laminated respectively so that the thickness of the end lattice 83 The thickness for spending central divider (84) described in size ratio is big.

In the 5th aspect, central divider 84 is formed by a plank, in contrast, by the way that multiple planks are laminated Get up and form end lattice 83, therefore, the compressive resistance of end lattice 83 improves.Collect as a result, with total in the prior art It closes the case where pipe 80 bends to arch to compare, 80 unbending state of total collection pipe can be kept.

The effect-of utility model

The third aspect is arrived according to the first of the disclosure, by keeping end lattice 83 thicker than central divider 84, so as to 80 unbending state of total collection pipe is enough kept, the flat tube 63 at the both ends of total collection pipe 80 is not subject to powerful pulling force as a result, Also it can inhibit the strength reduction of flat tube 63.Specifically, because being able to maintain that the refrigerant flow path of flat tube 63 in length and breadth Than constant, so the compressive resistance of flat tube 63 will not reduce.

In addition, in the prior art, if increasing the wall thickness of flat tube 63 to improve intensity, or increasing total collection pipe 80 Wall thickness prevent total collection pipe 80 to be deformed into arch, it will be able to avoid the above problem, but, from thus cannot achieve heat exchange The lightweight of device, it may appear that cost improves this problem.In contrast, the third aspect is arrived according to the first of the disclosure, as long as The thickness for increasing end lattice 83 can also solve cost and carry therefore, it is possible to realize intensity maintenance and lightweight simultaneously High problem, so as to solve above-mentioned new issue.

According to the fourth aspect of the disclosure, as long as making the plate of the thickness and central divider 84 of the plank of end lattice 83 The thickness of material is unequal, it will be able in simple structure come realize first arrive the third aspect effect.

According to the 5th of disclosure aspect, as long as using the thickness plank equal with central divider 84 and by multiple plates Material stacking get up to form end lattice 83, it will be able to simpler structure come realize first arrive the third aspect effect.

Description of the drawings

Fig. 1 is the structure diagram of the air-conditioning device involved by the embodiment of the utility model.

Fig. 2 is the diagrammatic perspective view of outdoor heat exchanger.

Fig. 3 is the magnified partial view of the heat exchange department of Fig. 2.

Fig. 4 is using corrugated fin as thermofin, corresponding with Fig. 3 figure.

Fig. 5 is the structure diagram of outdoor heat exchanger.

Fig. 6 is the entrance total collection pipe of Fig. 2 and the enlarged drawing of coolant flow divider.

Fig. 7 is the vertical view of by-passing parts.

Fig. 8 is the central divider i.e. stereogram of edge dam.

Fig. 9 is the end lattice i.e. stereogram of closed guard.

Figure 10 is the stereogram for the variation for showing closed guard.

Figure 11 is definition graph, shows the case where total collection pipe is bent in existing heat exchanger.

Specific implementation mode

In the following, the embodiment of the utility model is described in detail with reference to attached drawing.

(embodiment of utility model)

In the present embodiment, coolant flow divider 70 is applied in the heat exchange unit U of air-conditioning device 1.

The basic structure > of < air-conditioning devices

Fig. 1 is the structure diagram of air-conditioning device 1, which has the heat exchanger involved by the utility model.It should Air-conditioning device 1 is (to carry out freezing and refrigeration to space in library or to interior using the refrigerating plant of the heat exchanger of the utility model Carry out air conditioning broad sense refrigerating plant) an example.

Air-conditioning device 1 be by carry out steam compression type freeze cycle, the interior of building etc. can be carried out refrigeration and The device of heating.Air-conditioning device 1 is mainly constituted by outdoor unit 2 and indoor units 4 connect.Here, outdoor Unit 2 and indoor units 4 are connected with each other via liquid refrigerant connecting pipe 5 and gaseous state connecting refrigerant lines road 6.Namely Say, the steam compression type refrigerating agent circuit 10 of air-conditioning device 1 be outdoor unit 2 with indoor units 4 via connecting refrigerant lines road 5, it 6 connects and constitutes.

(indoor units)

Indoor units 4 are arranged indoors, constitute a part for refrigerant circuit 10.Indoor units 4 mainly have Indoor Thermal Exchanger (second heat exchanger) 41.

When carrying out refrigeration operation, indoor heat exchanger 41 plays a role as the evaporator of refrigerant and cools down Interior Space Gas, when carrying out heating operation, indoor heat exchanger 41 plays a role and heating indoor air as the radiator of refrigerant.Room The liquid side of inside heat exchanger 41 is connect with liquid refrigerant connecting pipe 5, the gas side of indoor heat exchanger 41 and gaseous refrigerant Connecting pipe 6 connects.

Indoor units 4 have indoor fan 42, the indoor fan 42 be used for by room air sucking indoor units 4 in and It is allowed in indoor heat exchanger 41 between the room air and refrigerant after carrying out heat exchange, using the air after heat exchange as supply Air feeds to interior.That is, there is indoor units 4 indoor fan 42 to be used as feeds to indoor heat exchanger 41 by room air Fan, wherein the room air is the heating source or cooling source of the refrigerant flowed in heat exchanger 41 indoors.Here, Using centrifugal fan, multi blade fan for using motor 42a drivings by indoor fan etc. as indoor fan 42.

(outdoor unit)

The setting of outdoor unit 2 constitutes a part for refrigerant circuit 10 in outdoor.Outdoor unit 2 mainly has compressor 21, four-way reversing valve 22, outdoor heat exchanger (first heat exchanger) 23, expansion valve (expansion mechanism) 24, liquid side normally close valve 25 And gas side normally close valve 26.

Compressor 21 is by the equipment of the refrigerant compression of the low pressure of freeze cycle to high pressure.Compressor 21 has：Revolution Type, Scrawl isometric(al) formula compression factor (not shown) are by electric motor for compressor 21a drives and rotates closed structure.It is pressing The suction side of contracting machine 21 is connected with suction line 31, and bleed pipe 32 is connected in the ejection side of compressor 21.Suction line 31 is will to press The refrigerant tubing that the suction side of contracting machine 21 is connected with four-way reversing valve 22.Bleed pipe 32 is by the ejection side of compressor 21 The refrigerant tubing connected with four-way reversing valve 22.

Four-way reversing valve 22 is the switching valve of the flow direction for switching the refrigerant in refrigerant circuit 10.Carry out When refrigeration operation, refrigerant circuit 10 is switched to refrigeration cycle state by four-way reversing valve 22, under the refrigeration cycle state, is made Outdoor heat exchanger 23 makes Indoor Thermal hand over as the radiator of compressed refrigerant plays a role in compressor 21 Parallel operation 41 plays a role as the evaporator of the refrigerant to have radiated in outdoor heat exchanger 23.That is, being made When blowdown firing, four-way reversing valve 22 makes the gas side of ejection side (being herein bleed pipe 32) and outdoor heat exchanger 23 of compressor 21 (being herein the first gaseous refrigerant pipeline 33) connects (solid line of the four-way reversing valve 22 in referring to Fig.1).At this point, compressor 21 Suction side (being herein suction line 31) and gaseous refrigerant connecting pipe 6 (being herein the second gaseous refrigerant pipeline 34) connected It connects (solid line of the four-way reversing valve 22 in referring to Fig.1).

When carrying out heating operation, refrigerant circuit 10 is switched to heating recurrent state by four-way reversing valve 22, in the system Under cycling situation, outdoor heat exchanger 23 is made to be played as the evaporator of the refrigerant to have radiated in heat exchanger 41 indoors Effect, and make indoor heat exchanger 41 as the radiator of compressed refrigerant plays a role in compressor 21.? That is when carrying out heating operation, four-way reversing valve 22 makes ejection side (being herein bleed pipe 32) and the gaseous state of compressor 21 Connecting refrigerant lines road 6 (being herein the second gaseous refrigerant pipeline 34) connects (void of the four-way reversing valve 22 in referring to Fig.1 Line).At this point, the suction side (being herein suction line 31) of compressor 21 and the gas side of outdoor heat exchanger 23 (are herein the first gas State refrigerant tubing 33) it is connected (dotted line of the four-way reversing valve 22 in referring to Fig.1).Here, the first gaseous refrigerant pipeline 33 be the refrigerant tubing for connecting the gas side of four-way reversing valve 22 and outdoor heat exchanger 23.Second gaseous refrigerant pipe Road 34 is the refrigerant tubing for connecting four-way reversing valve 22 and gas side normally close valve 26.

Outdoor heat exchanger 23 is a kind of heat exchanger as described below, i.e.,：When carrying out refrigeration operation, as with outdoor Air is that the radiator (refrigerant radiator) of the refrigerant of cooling source plays a role；When carrying out heating operation, as with room Outer air is that the evaporator (refrigerant evaporator) of the refrigerant of heating source plays a role.The liquid side of outdoor heat exchanger 23 and liquid State refrigerant tubing 35 connects, and the gas side of outdoor heat exchanger 23 is connect with the first gaseous refrigerant pipeline 33.Liquid refrigerant Pipeline 35 is the refrigerant tubing for connecting the liquid side of outdoor heat exchanger 23 and liquid refrigerant connecting pipe 5.

Expansion valve 24 is a kind of valve as described below, i.e.,：It, will be in outdoor heat exchanger 23 when carrying out refrigeration operation The refrigerant of the high pressure of the freeze cycle of heat dissipation is decompressed to the low pressure of freeze cycle；It, will be hot indoors when carrying out heating operation The refrigerant of the high pressure of the freeze cycle to have radiated in exchanger 41 is decompressed to the low pressure of freeze cycle.Expansion valve 24 is arranged in liquid On the part of the close liquid side normally close valve 25 of state refrigerant tubing 35.Here, using electric expansion valve as expansion valve 24.

Liquid side normally close valve 25 and gas side normally close valve 26 are provided in external equipment or pipeline (specifically, liquid refrigeration Agent connecting pipe 5 and gaseous refrigerant connecting pipe 6) with the valve at the connector of outdoor unit 2.The setting of liquid side normally close valve 25 exists On the end of liquid refrigerant pipeline 35.Gas side normally close valve 26 is arranged on the end of the second gaseous refrigerant pipeline 34.

Outdoor unit 2 have outdoor fan 36, the outdoor fan 36 be used for by outdoor air sucking outdoor unit 2 in and It allows between the outdoor air and refrigerant after carrying out heat exchange, the air after heat exchange is arranged outside in outdoor heat exchanger 23 Portion.That is, outdoor unit 2 has outdoor fan 36 as the fan that outdoor air is fed to outdoor heat exchanger 23, In, which is the cooling source or heating source of the refrigerant flowed in outdoor heat exchanger 23.Here, using by outdoor Fan uses propeller fan of motor 36a drivings etc. as outdoor fan 36.

(connecting refrigerant lines road)

Connecting refrigerant lines road 5,6 is when being arranged air-conditioning device 1 on the installation position of building etc., at the scene The refrigerant tubing installed is arranged condition according to combined situation of installation position, outdoor unit 2 and indoor units 4 etc., makes With with various length, the connecting pipe of pipe diameter 5,6.

The basic structure > of < outdoor heat exchangers

Then, the structure of outdoor heat exchanger 23 is illustrated referring to figs. 1 to Fig. 5.Here, Fig. 2 is heat exchange list The diagrammatic perspective view of first U (outdoor heat exchanger 23), Fig. 3 are the magnified partial views of the heat exchange department 60 in Fig. 2.Fig. 4 is to use Corrugated fin as thermofin 64 in the case of, corresponding with Fig. 3 figure.Fig. 5 is the structure of outdoor heat exchanger 23 Schematic diagram.It should be noted that in the following description, unless otherwise indicated, indicating direction, the word in face means with outdoor heat Direction, face on the basis of exchanger 23 is arranged the state in the casing (not shown) of outdoor unit 2.

Outdoor heat exchanger 23 is the heat exchanger plate in generally L-shaped when overlooking.Outdoor heat exchanger 23 mainly has Have：It allows between outdoor air and refrigerant and carries out the heat exchange department 60 of heat exchange；The one end being arranged in heat exchange department 60 goes out Entrance total collection pipe 80 (the first total collection pipe)；And the intermediate total collection pipe 90 in the another side of heat exchange department 60 is set (the second total collection pipe).Outdoor heat exchanger 23 constitutes entrance total collection pipe 80, intermediate total collection pipe 90 and heat exchange department 60 heat exchangers all formed by aluminum or aluminum alloy.

Heat exchange department 60 has multiple (being herein 12) main heat exchange departments on the top for constituting outdoor heat exchanger 23 Multiple (being herein 12) auxiliary heat exchange department 62A~62L of the lower part of 61A~61L and composition outdoor heat exchanger 23.Just For main heat exchange department 61A~61L, main heat exchange department 61A is arranged in top layer, past from the downside of the main heat exchange department 61A Downside has been sequentially arranged main heat exchange department 61B~61L.For assisting heat exchange department 62A~62L, heat exchange department 62A cloth is assisted It sets in lowest level, from the upside of auxiliary heat exchange department 62A, auxiliary heat exchange department 62B~62L has been sequentially arranged toward upside.

Heat exchange department 60 is handed over by the so-called insertion fin-type heat that many heat-transfer pipes 63 and many thermofins 64 are constituted Parallel operation, wherein heat-transfer pipe 63 is made of flat tube, and thermofin 64 is made of so-called insertion fin.Heat-transfer pipe 63 by aluminium or Aluminium alloy is formed, and is the flat perforated pipe with planar portions 63a and many tiny internal flow path 63b, wherein planar portions 63a As heat-transfer area and towards above and below upper and lower directions, refrigerant flows in internal flow path 63b.Many 63 edges of heat-transfer pipe It vertical direction and is disposed with multilayer in a manner of keeping interval mutually.One end of heat-transfer pipe 63 is connected to entrance total collection pipe 80 On, the other end of heat-transfer pipe 63 is connected on intermediate total collection pipe 90.Thermofin 64 is formed by aluminum or aluminum alloy.In heat transfer fin Horizontally extending many elongated notch 64a are formed on the side edge part of the side of piece 64, so as to will be arranged in Many heat-transfer pipes 63 between entrance total collection pipe 80 and intermediate total collection pipe 90 are inserted into many notch 64a.Heat transfer The shape and the shape in the section of heat-transfer pipe 63 of the notch 64a of fin 64 is roughly the same.

Many heat-transfer pipes 63 divide for main heat exchange department 61A~61L and auxiliary heat exchange department 62A~62L.In many heat-transfer pipes In 63, towards downside from the top layer of outdoor heat exchanger 23, the heat-transfer pipe 63 groups per specified quantity (three~eight or so) Respectively constitute main heat exchange department 61A~61L.In many heat-transfer pipes 63, towards upper from the lowest level of outdoor heat exchanger 23 Side, the heat-transfer pipe 63 groups per specified quantity (one~tri- or so) respectively constitute auxiliary heat exchange department 62A~62L.

It should be noted that outdoor heat exchanger 23 is not limited to make (with reference to Fig. 3) using insertion fin as described above For the insertion fin-type heat exchanger of thermofin 64, outdoor heat exchanger 23 can also be using many corrugated fins (ginseng According to Fig. 4) corrugated fin type heat exchanger as thermofin 64.

(structure of intermediate total collection pipe)

The structure of intermediate total collection pipe 90 is illustrated with reference to Fig. 5.It should be noted that in the following description, Unless otherwise indicated, direction is indicated, the word in face means to be arranged including the outdoor heat exchanger 23 of intermediate total collection pipe 90 Direction, face on the basis of state in outdoor unit 2.

Intermediate total collection pipe 90 is the cartridge for being formed with aluminum or aluminum alloy, being extended in the vertical direction, is had vertical To the longer hollow intermediate total collection shell 91 of length.

By multiple (being herein 11) main side middle baffle plates 92, multiple (being herein 11) auxiliary middle baffle plate 93, And border side middle baffle plate 94 separates the inner space of intermediate total collection shell 91 in the vertical direction.Multiple main side middle aprons Plate 92 is set gradually in the vertical direction, so that the inner space on the top of intermediate total collection shell 91 to be separated among main side Space 95A~95K, wherein main side intermediate space 95A~95K is connected to the other end of main heat exchange department 61A~61K.In auxiliary Between baffle 93 set gradually in the vertical direction, so that the inner space of the lower part of intermediate total collection shell 91 is separated into auxiliary Side intermediate space 96A~96K, wherein the other end of secondary side intermediate space 96A~96K and auxiliary heat exchange department 62A~62K Connection.Border side middle baffle plate 94 is set as：By the main side middle baffle plate 92 of the lowest level side of intermediate total collection shell 91 and most The inner space of vertical direction between the auxiliary middle baffle plate 93 of upper layer side is separated into be connected with the other end of main heat exchange department 61L The logical main side intermediate space 95L and secondary side intermediate space 96L being connected to the other end of auxiliary heat exchange department 62L.

Multiple (being herein 11) intermediate connection tube road 97A~97K are connected on intermediate total collection shell 91.It is intermediate Connecting pipe 97A~97K is the refrigerant for making main side intermediate space 95A~95K be connected to secondary side intermediate space 96A~96K Pipeline.Main heat exchange department 61A~61K and auxiliary heat exchange department 62A~62K connects via intermediate total collection pipe 90 and centre as a result, Take over road 97A~97K is connected to, to form refrigerant passage 65A~65K of outdoor heat exchanger 23.In addition, in border side Between be formed with the middle baffle plate intercommunicating pore 94a for making main side intermediate space 95L be connected to secondary side intermediate space 96L on baffle 94. Main heat exchange department 61L is connected to auxiliary heat exchange department 62L via intermediate total collection pipe 90 and middle baffle plate intercommunicating pore 94a as a result, To form the refrigerant passage 65L of outdoor heat exchanger 23.As described above, outdoor heat exchanger 23 is with refrigerant passage point For the structure of a plurality of (being herein 12 accesses) access, that is, refrigerant passage 65A~65L.

(structure of entrance total collection pipe)

The structure of entrance total collection pipe 80 illustrated referring to figure 5 and figure 6.It should be noted that following In explanation, unless otherwise indicated, direction is indicated, the word in face means to include the outdoor heat exchange of entrance total collection pipe 80 Direction, face on the basis of device 23 is arranged the state in outdoor unit 2.

Entrance total collection pipe 80 is the component extended along vertical direction formed by aluminum or aluminum alloy, has longitudinal length Longer hollow entrance total collection shell 81.Entrance total collection shell 81 has the cylindrical shape of upper end and open at its lower end mouth The opening of the entrance total collection pipe cylindrical body 82 of shape, upper end and lower end is closed by two closed guards 83.Entrance total collection The inner space of shell 81 is divided into entrance space 85 and the supply of lower part on top by edge dam 84 in the vertical direction Space 86A~86L.Closed guard 83 constitutes the end lattice of aftermentioned the utility model, and edge dam 84 constitutes aftermentioned The central divider of the utility model constitutes multiple lattices by end lattice and central divider.Above-mentioned end lattice I.e. closed guard 83 is arranged near the both ends of above-mentioned entrance total collection pipe (total collection pipe) 80.

Closed guard 83 and edge dam 84 be inserted into be formed in it is narrow on total collection pipe i.e. entrance total collection pipe 80 Stitch the inside of S.Slit S is made of the notch section of substantially arc-shaped, which is formed in the entire of entrance total collection pipe 80 On the region of substantially half in circumference in the outer part.Closed guard 83 and edge dam 84 are by the inside of entrance total collection pipe 80 It is divided into supply space 86A~86L and entrance space 85.It supplies space 86A~86L and constitutes inflow 63 pervious system of heat-transfer pipe First space of cryogen (fluid) flowing.Entrance space 85, which is constituted, flows through the later refrigerant of heat-transfer pipe 63 (fluid) flowing Second space.

Entrance space 85 is the space being connected to one end of main heat exchange department 61A~61L, logical by refrigerant as making It works in the space that refrigerant after the 65A~65L of road converges in outlet.As described above, the entrance with entrance space 85 The top of total collection pipe 80 is as the refrigerant outlet for making to converge in outlet by the refrigerant after refrigerant passage 65A~65L It works in portion.

For entrance total collection pipe 80, the first gaseous refrigerant pipeline 33 is connected to entrance space 85.Supply is empty Between 86A~86L be with separated by multiple (being herein 11) supply side entrance baffles 87 auxiliary heat exchange department 62A~ 62L one end connection multiple (being herein 12) spaces, and as allow refrigerant to refrigerant passage 65A~65L flow out Space work.As described above, the lower part of the entrance total collection pipe 80 with multiple supply space 86A~86L is used as and allows The refrigerant supply unit 86 that refrigerant is assigned to multiple refrigerant passage 65A~65L and flowed out works.

< coolant flow dividers >

The structure of coolant flow divider 70 is illustrated with reference to Fig. 5~Fig. 7.

Coolant flow divider 70 is refrigerant by component, allows the refrigerant point flowed into via liquid refrigerant pipeline 35 Downstream (being herein multiple heat-transfer pipes 63) flows out after stream.Coolant flow divider 70 is arranged in one end of outdoor heat exchanger 23 Side, and connect with one end of heat-transfer pipe 63 via the refrigerant supply unit 86 of entrance total collection pipe 80.Coolant flow divider 70 It is formed by aluminum or aluminum alloy.Coolant flow divider 70 is integrally formed with outdoor heat exchanger 23 and constitutes heat exchange unit U.

Coolant flow divider 70 has the shunt body 71 of the longer hollow form of longitudinal length.Shunt body 71 has The trunk 72 of the cylindrical shape of upper end and open at its lower end mouth.The axial direction along the trunk 72 is formed on trunk 72 Multiple insertion slit 72a, 72b, 72c of (vertical direction) arrangement.Multiple baffles 73,77,77a be respectively inserted it is each be inserted into it is narrow It stitches in 72a, 72b, 72c.It should be noted that shunt body 71 is not limited to cylindrical shape, can also be, for example, square tube shape The polygonal barrel shape such as shape.

Multiple insertion slit 72a, 72b, 72c by two end side slit 72a, 72a, a nozzle side slit 72c and Many middle slit 72b are constituted.End side slit 72a, 72a are respectively formed at the top and bottom of trunk 72.Nozzle side is narrow Stitch the immediate insertion slit 72c of end side slit 72a of 72c composition and the downside in multiple insertion slit 72a, 72b, 72c. Many middle slit 72b are formed between the end side slit 72a and nozzle side slit 72c of upside.

Multiple baffles 73,77,77a are made of two end side shields 73,73 and many middle baffle plates 77.Each end side Baffle 73,73 is formed as circular plate, is respectively inserted in each end side slit 72a, 72a.Each end side shield 73,73 The upper opening and lower openings of the trunk 72 of shunt body 71 are closed respectively.

Middle baffle plate 77 there are one being inserted into respectively in nozzle side slit 72c and in each middle slit 72b.In nozzle side In slit 72c, jet element 79 is inserted into the downside of middle baffle plate 77.Nozzle side shield 77a and middle baffle plate 77 are in center Part is formed with the component of the generally circular annulus plate for being inserted into hole 77b.Rodlike by-passing parts 74 are to run through each insertion The mode of hole 77b is inserted into many be inserted into the 77b of hole.

Lower space 78 and many relaying space 76A~76L there are one being formed in the inside of shunt body 71.Lower part is empty Between 78 be divided into downside end side shield 73 and jet element 79 between space.The open end of liquid refrigerant pipeline 35 It is connected to lower space 78.Many relaying space 76A~76L are respectively formed at by-passing parts 74 and neighbouring each centre Between baffle 77.That is, much relaying space 76A~76L be formed in it is around by-passing parts 74, in substantially cylinder Columnar space.

By-passing parts 74 are the bar-like members extended along vertical direction.By-passing parts 74 are formed by aluminum or aluminum alloy.Dividing Be formed in stream unit 74 along the by-passing parts 74 circumferencial direction arrangement a plurality of (being herein 12) shunting road 74A~ 74L.These shuntings road 74A~74L is for example by the length direction extrusion forming by by-passing parts 74 to the by-passing parts 74 And formed.In by-passing parts 74, the part to be fenced up by a plurality of shunting road 74A~74L is solid section.

The upper end of by-passing parts 74 is in contact with the lower surface of the end side shield 73 of upside.A plurality of shunting road 74A~74L The opening of upper end substantially closed by the end side shield 73 of upside.The upper table of the lower end and jet element 79 of by-passing parts 74 Face is in contact.The opening of the lower end of a plurality of shunting road 74A~74L connects with a shunting space 75 being formed on jet element 79 It is logical.

Very much (being herein 12) lateral aperture 74a are formed on the peripheral surface of by-passing parts 74.Each lateral aperture 74a It is arranged in a manner of with being along the circumferential direction gradually staggered towards upside from the downside of by-passing parts 74 spiral.Each side Hole 74a with and each lateral aperture 74a each relaying space 76A~76L corresponding one to one be connected to.That is, Each lateral aperture 74a only be connected to corresponding relaying space 76A~76L, without with not corresponding other relaying space 76A ~76L is connected to.

The middle baffle plate 77 of jet element 79 and lower side is inserted into together in nozzle side slit 72c.That is, nozzle Component 79 is split the bearing of device main body 71 to be layered in the state of the downside of middle baffle plate 77.Jet element 79 is by aluminum or aluminum alloy It is formed.Jet element 79 is discoid board member, and circular spray is formed in the center portion radially of jet element 79 Nozzle aperture 70c.Recess portion 70b is formed on the upper surface of jet element 79.The internal diameter of the inside of recess portion 70b is than nozzle bore 70c's Internal diameter is big.It is formed with columned shunting space 75 in the inside of recess portion 70b.The lower end and nozzle bore 70c for shunting space 75 connect It is logical.The upper end in shunting space 75 is connected to each shunting road 74A~74L.

There are coolant flow divider 70 more isocons 88, more isocons 88 to keep each relaying of shunt body 71 empty Between 76A~76L be connected to one to one with each supply space 86A~86L of entrance total collection pipe 80.In the example of fig. 6, 12 isocon 88A~88L are connected between shunt body 71 and entrance total collection pipe 80.

The structure > of < lattices

With reference to Fig. 8 and Fig. 9, central divider, that is, edge dam 84 and end lattice, that is, closed guard 83 are carried out Explanation.

Edge dam 84 is that have the first large-diameter portion 111a and the first small diameter portion in generally circular plank (demarcation strip) 111b.First large-diameter portion 111a is to form the front side in an insertion direction of edge dam 84 in substantially semi-circular plate portion The part of the substantially half of (rear side).The radius of first large-diameter portion 111a and the radius of the peripheral surface of entrance total collection pipe 80 are big It causes equal.First small diameter portion 111b is to form the depth in an insertion direction of edge dam 84 in substantially semi-circular plate portion Substantially one half part of side (front side).The radius of first small diameter portion 111b and the radius of the inner peripheral surface of entrance total collection pipe 80 are big It causes equal.Two ends of the width direction (width direction of flat tube 63) of the first large-diameter portion 111a are from the first small diameter portion 111b It is prominent.The two protrusions 111c be formed in by the first small diameter portion 111b be inserted into the state of the depth side of slit S with it is narrow The contact site that the opening edge of seam S is in contact.

Closed guard 83 be in generally circular plank (demarcation strip), and have the second large-diameter portion 121a and the second path Portion 121b.Wherein, if being t by the thickness of edge dam 84, then the thickness of closed guard 83 is the thickness of edge dam 84 Spend size approximately twice as i.e. 2t.Second large-diameter portion 121a is to form inserting for closed guard 83 in substantially semi-circular plate portion Enter substantially one half part of the front side (rear side) on direction.The radius of second large-diameter portion 121a and entrance total collection pipe 80 The radius of peripheral surface is roughly equal.Second small diameter portion 121b is to form inserting for closed guard 83 in substantially semi-circular plate portion Enter substantially one half part of the depth side (front side) on direction.The radius of second small diameter portion 121b and entrance total collection pipe 80 The radius of inner peripheral surface is roughly equal.Two ends of the width direction (width direction of flat tube 63) of the second large-diameter portion 121a from Second small diameter portion 121b is protruded.The two protrusions 121c is formed in the depth side that the second small diameter portion 121b is inserted into slit S In the state of the contact site that is in contact with the opening edge of slit S.

As described above, edge dam 84 and closed guard 83 are multiple lattices, edge dam 84 and closed guard 83 connect Close in the inside of above-mentioned entrance total collection pipe 80, and by the entrance total collection pipe 80 be separated into it is inside and outside and by this it is total The inside of concetrated pipe is separated into multiple spaces.Moreover, the thickness of closed guard 83 is about twice of the thickness of edge dam 84, The rigidity of closed guard 83 is bigger than the rigidity of edge dam 84.Wherein, closed guard 83 is arranged on above-mentioned entrance total collection End lattice near the most end of pipe 80, edge dam 84 are arranged on the both ends than the entrance total collection pipe 80 and more lean on The central divider of inside.

As noted previously, as closed guard 83 and the thickness of edge dam 84 are unequal, thus it is formed in entrance The size of slit S on total collection pipe 80 is corresponding with the thickness of the thickness of closed guard 83 and edge dam 84 respectively.

< motions >

Then, the elemental motion of air conditioner 1 is illustrated referring to Fig.1.Air-conditioning device 1 can be carried out as substantially dynamic The refrigeration operation of work and heating operation.

< refrigeration operations >

When carrying out refrigeration operation, four-way reversing valve 22 is switched to refrigeration cycle state and (is shown in solid lines in Fig. 1 State).In refrigerant circuit 10, the gaseous refrigerant of the low pressure of freeze cycle is sucked by compressor 21, is compressed into freezing It is sprayed after the high pressure of cycle.

The gaseous refrigerant of the high pressure sprayed from compressor 21 is sent to outdoor heat exchanger 23 via four-way reversing valve 22. The gaseous refrigerant of the high pressure of outdoor heat exchanger 23 is reached in the outdoor heat exchanger to play a role as refrigerant radiator In 23, with by outdoor fan 36 for come as cooling source outdoor air progress heat exchange and radiate, become the liquid of high pressure Refrigerant.

The liquid refrigerant of high pressure in outdoor heat exchanger 23 after heat dissipation is sent to expansion valve 24.Reach expansion valve 24 The liquid refrigerant of high pressure the low pressure of freeze cycle is decompressed to by expansion valve 24, become the refrigeration of the gas-liquid two-phase state of low pressure Agent.The refrigerant of the gas-liquid two-phase state of low pressure in expansion valve 24 after decompression is via liquid side normally close valve 25 and liquid refrigerant Connecting pipe 5 is sent to indoor heat exchanger 41.

Reach the refrigerant of the gas-liquid two-phase state of the low pressure of indoor heat exchanger 41 indoors in heat exchanger 41 with by Indoor fan 42 carries out heat exchange for the room air as heating source come and evaporates.It is supplied after room air is cooled as a result, To interior, to which interior is freezed.

The gaseous refrigerant of the low pressure in heat exchanger 41 after evaporation is via gaseous refrigerant connecting pipe 6, gas indoors Side normally close valve 26 and four-way reversing valve 22, are sucked by compressor 21 again.

< heating operations >

When carrying out heating operation, four-way reversing valve 22 is switched to heating recurrent state and (is shown in broken lines in Fig. 1 State).In refrigerant circuit 10, the gaseous refrigerant of the low pressure of freeze cycle is sucked by compressor 21, and is compressed into cold It is sprayed after freezing the high pressure of cycle.

The gaseous refrigerant of the high pressure sprayed from compressor 21 is via four-way reversing valve 22, gas side normally close valve 26 and gaseous state Connecting refrigerant lines road 6 is sent to indoor heat exchanger 41.The gaseous refrigerant of the high pressure of indoor heat exchanger 41 is reached in room In inside heat exchanger 41, with by indoor fan 42 for come as cooling source room air progress heat exchange and radiate, become The liquid refrigerant of high pressure.Room air feeds to interior after being heated as a result, to which interior is heated.

The liquid refrigerant of the high pressure in heat exchanger 41 after heat dissipation is via liquid refrigerant connecting pipe 5 and liquid indoors Side normally close valve 25 is sent to expansion valve 24.The liquid refrigerant for reaching the high pressure of expansion valve 24 is decompressed to freezing by expansion valve 24 The low pressure of cycle becomes the refrigerant of the gas-liquid two-phase state of low pressure.The gas-liquid two-phase of low pressure in expansion valve 24 after decompression The refrigerant of state is sent to outdoor heat exchanger 23.

The refrigerant for reaching the gas-liquid two-phase state of the low pressure of outdoor heat exchanger 23 is played as refrigerant evaporator In the outdoor heat exchanger 23 of effect, with by outdoor fan 36 for come as heating source outdoor air progress heat exchange and steam Hair, becomes the gaseous refrigerant of low pressure.

The refrigerant of low pressure in outdoor heat exchanger 23 after evaporation is via four-way reversing valve 22, again by compressor 21 Sucking.

[mobility status of the refrigerant in heating operation in heat exchange unit]

Mobility status of the above-mentioned refrigerant in heating operation in heat exchange unit U is said with reference to Fig. 5, Fig. 6 It is bright.

After the refrigerant of gas-liquid two-phase state flows through liquid refrigerant pipeline 35, the lower part for flowing into coolant flow divider 70 is empty Between in 78.The refrigerant flow through nozzle bore 70c, shunting space 75, each item shunting road 74A~74L and each lateral aperture 74a and After being further depressurized, flowed out to each relaying space 76A~76L.Refrigerant in each relaying space 76A~76L flows through Each isocon 88, in each supply space 86A~86L for separately flowing into entrance total collection pipe 80.

Refrigerant in each supply space 86A~86L respectively flows through each heat transfer of auxiliary heat exchange department 62A~62L Pipe 63 and after air heat absorption, flow into each secondary side intermediate space 96A~96K of intermediate total collection pipe 90.Each auxiliary After refrigerant in the intermediate space 96A~96K of side flows through each intermediate connection tube road 97A~97K, flow into empty among each main side Between in 95A~95K.

Refrigerant in each main side intermediate space 95A~95K flows through each heat-transfer pipe of main heat exchange department 61A~61L 63 and after air heat absorption, flow into the entrance space 85 of entrance total collection pipe 80.The refrigerant flows through the first gaseous state system Refrigerant tube is sent to the suction side of compressor 21 to 33.

In the present embodiment, because using the plank thicker than central divider, that is, edge dam 84 formed end part every Portion, that is, closed guard 83, so the compressive resistance of closed guard 83 improves.As a result, with entrance total collection pipe in the prior art 80 compare the case where bending to arch as shown in Figure 11, can keep 80 unbending state of entrance total collection pipe.

The effect-of embodiment

According to above-mentioned embodiment because using than central divider, that is, edge dam 84 more after plank formed end Lattice, that is, closed guard 83, so as to keep 80 unbending state of entrance total collection pipe, so entrance total collection The flat tube 63 at the both ends of pipe 80 is not subject to powerful pulling force, can also inhibit the strength reduction of flat tube 63.Specifically, Because being able to maintain that the aspect ratio of the refrigerant flow path of flat tube 63 is constant, the compressive resistance of flat tube 63 will not reduce.

In addition, in the prior art, increasing the wall thickness of flat tube 63 to improve intensity, or increase entrance total collection pipe 80 wall thickness prevents from being deformed into arch, so as to avoid the above problem, but, thus cannot achieve heat exchanger 23 Lightweight, it may appear that cost improves this problem.And in contrast, according to the present embodiment, as long as increasing closed guard 83 Thickness just can be achieved at the same time heat exchanger 23 intensity maintain and lightweight, can also prevent cost from improving.

(other embodiment)

The above embodiment can also use such as lower structure.

In the above embodiment, the closed guard 83 and edge dam 84 of total collection pipe, that is, entrance total collection pipe 80 use The lattice of the utility model.But, the utility model is not only applicable in entrance total collection pipe 80, can also be applied to The intermediate total collection pipe 90 of also total collection pipe is separated into the lattice (baffle) in multiple spaces.

In addition, in the above-described embodiment, forming intermediate demarcation strip i.e. using the unequal plank of thickness respectively Edge dam 84 and end demarcation strip, that is, closed guard 83.It is however also possible to be such：Boundary is formed using a plank to keep off Plate 84, on the other hand, as shown in Figure 10, by the way that two sheet metal layers identical with edge dam 84 gather into folds, to close Baffle 83 is formed as the component thicker than edge dam 84.So, because can edge dam 84 to be used for identical plank With closed guard 83, so being easily managed material.

Moreover, in the above-described embodiment, the thickness of closed guard 83 be set as edge dam 84 approximately twice as but thickness The relationship of size is not limited to twice, and can also be suitably changed.

In addition, the concrete structure and coolant flow divider 70 of the outdoor heat exchanger 23 that illustrates in the above-described embodiment Concrete structure is all only an example, can also be suitably changed.For example, outdoor heat exchanger 23 can not when overlooking In L-shaped, the number of plies of heat-transfer pipe can also be suitably changed.In addition, outdoor heat exchanger 23 can also be multiple (examples Such as it is two row) heat exchanger that is arranged along air circulation direction of heat exchange department 60.

As described above, the coolant flow divider of the utility model is not only applied in air-conditioning device 1, can also be applied to pair Space carries out in the library inside heat exchanger of cooling refrigerating plant in library.

It should be noted that the above embodiment is substantially preferred example, be not intended to the utility model, its The range of application or its purposes limits.

Industrial applicability-

In conclusion the utility model has the heat exchanger that the end of more flat tubes is connected on total collection pipe very much With.

Symbol description-

23 heat exchangers

63 heat-transfer pipes (flat tube)

80 total collection pipes (entrance total collection pipe)

83 closed guards (end lattice)

84 edge dams (central divider)

Claims (6)

1. a kind of heat exchanger comprising：More flat tubes (63)；Total collection pipe (80), the end of the more flat tubes (63) Portion is connected on the total collection pipe (80)；And multiple lattices (83,84), multiple lattices (83,84) are bonded on The inside of the total collection pipe (80), and the total collection pipe (80) is separated into inside and outside and by the total collection pipe (80) Inside is separated into multiple spaces, and the heat exchanger is characterized in that：

Multiple lattices (83,84) are by the end lattice that is arranged near the end of the total collection pipe (80) (83) it is constituted with the both ends central divider (84) more in the inner part that is arranged in than the total collection pipe (80), the end lattice (83) rigidity is bigger than the rigidity of the central divider (84).

2. heat exchanger according to claim 1, it is characterised in that：

The end lattice (83) is arranged near the both ends of the total collection pipe (80).

3. heat exchanger according to claim 1 or 2, it is characterised in that：

The end lattice (83) and the central divider (84) are the demarcation strip formed by plank respectively.

4. heat exchanger according to claim 1 or 2, it is characterised in that：

The thickness on the length direction of the total collection pipe (80) of the end lattice (83) is than the centre point The thickness on the length direction of the total collection pipe (80) every portion (84) is big.

5. heat exchanger according to claim 3, it is characterised in that：

The central divider (84) is made of a plank respectively,

The end lattice (83) is constituted by multiple planks are laminated respectively so that the thickness of the end lattice (83) The thickness for spending central divider (84) described in size ratio is big.

6. heat exchanger according to claim 3, it is characterised in that：

The thickness on the length direction of the total collection pipe (80) of the end lattice (83) is than the centre point The thickness on the length direction of the total collection pipe (80) every portion (84) is big.