CN205897899U - Microchannel heat exchanger and have its refrigerating system - Google Patents

Abstract

The utility model discloses a microchannel heat exchanger and have its refrigerating system. The microchannel heat exchanger includes: first pressure manifold and second pressure manifold, first pressure manifold with the second pressure manifold extends and sets up side by side along vertical direction, first pressure manifold with be equipped with the insertion groove that a plurality of levels are extended on the second pressure manifold respectively, a plurality of flat pipes, flat pipe has first section, second section and is located first section with interlude between the second section, the plane at interlude place is parallel with vertical face, first section with the plane at second section place is all parallel with the horizontal plane, a plurality of flat pipes first section is inserted respectively first pressure manifold a plurality of in the insertion groove, a plurality of flat pipes the second section is inserted respectively second pressure manifold a plurality of in the insertion groove. According to the utility model discloses a reliability of microchannel heat exchanger is high, and the pressure -bearing performance of first pressure manifold and second pressure manifold pipe wall is good.

Description

Micro-channel heat exchanger and the refrigeration system with it

Technical field

This utility model is related to refrigeration technology field, especially relates to a kind of micro-channel heat exchanger and has this microchannel and change The refrigeration system of hot device.

Background technology

Micro-channel heat exchanger is a kind of high-efficiency compact formula heat exchanger, because its compact appearance, heat exchange efficiency are high, lightweight, can By advantages such as property height, application in refrigeration systems is more and more extensive.In prior art, refrigeration system is increasing to be adopted relatively Coolant of clean environment firendly, such as carbon dioxide etc., the operating pressure of the coolant of the type is typically higher, therefore the holding of heat exchanger Pressure performance requirement is also of a relatively high.

Utility model content

This utility model is intended at least solve to a certain extent one of technical problem of the prior art.For this reason, this reality With a kind of micro-channel heat exchanger of new proposition, reliability height, the first header and second header of described micro-channel heat exchanger The load performance of tube wall is good.

This utility model also proposes a kind of refrigeration system with above-mentioned micro-channel heat exchanger.

Micro-channel heat exchanger according to this utility model first aspect embodiment, comprising: the first header and the second afflux Pipe, described first header and described second header vertically extend and are arranged side by side, described first header and institute State and multiple horizontal-extending insertion grooves are respectively equipped with the second header；Multiple flat tubes, described flat tube has first paragraph, second segment And the interlude between described first paragraph and described second segment, the plane that described interlude is located is parallel with vertical plane, institute State the plane that first paragraph and described second segment be located all and plane-parallel, the described first paragraph of the plurality of flat tube inserts respectively To in the multiple described insertion groove of described first header, the described second segment of the plurality of flat tube is inserted respectively into described second In the multiple described insertion groove of header.

According to micro-channel heat exchanger of the present utility model, flat tube insertion groove extend perpendicularly to the first header and The axial direction of two headers, so that the load performance of the first header and the second afflux tube wall more preferably, improves microchannel change The safety and reliability of hot device work, the interlude of flat tube is parallel with vertical plane in addition, so that micro-channel heat exchanger table The condensed water that face produces directly can flow down along the surface of heat exchanger, will not converge the surface amassed in heat exchanger, thus improve changing The heat exchange property of hot device.

In addition, according to micro-channel heat exchanger of the present utility model, can also have a following additional technical feature:

According to some embodiments of the present utility model, described interlude bending is in the arc-shaped.

According to some embodiments of the present utility model, described first header and described second header is located adjacent one another sets Put.

According to some embodiments of the present utility model, the insertion groove of described first header is inserted with described second header The unlimited direction entering groove is identical.

According to some embodiments of the present utility model, described interlude is to be spaced successively with bend loss by straight length to be connected Serpentine configuration.

According to some embodiments of the present utility model, between the two neighboring straight length of described flat tube, it is additionally provided with fin.

According to some embodiments of the present utility model, multiple described flat tube vertically interval settings.

According to the refrigeration system of this utility model embodiment, including micro-channel heat exchanger, described micro-channel heat exchanger is root Micro-channel heat exchanger according to this utility model above-mentioned first aspect embodiment.

According to the refrigeration system of this utility model embodiment, by setting according to this utility model first aspect embodiment Micro-channel heat exchanger is so that refrigeration system operational reliability is higher.

Additional aspect of the present utility model and advantage will be set forth in part in the description, partly will be from explained below In become obvious, or recognized by practice of the present utility model.

Brief description

Above-mentioned and/or additional aspect of the present utility model and advantage will from reference to the description to embodiment for the accompanying drawings below Become obvious and easy to understand, wherein:

Fig. 1 is the front view of the micro-channel heat exchanger according to one embodiment of this utility model；

Fig. 2 is the left view of the micro-channel heat exchanger shown in Fig. 1；

Fig. 3 is the top view of the micro-channel heat exchanger shown in Fig. 1；

Fig. 4 is the axonometric chart of the micro-channel heat exchanger shown in Fig. 1；

Fig. 5 is the lateral partial structurtes sectional view of the micro-channel heat exchanger shown in Fig. 1；

Fig. 6 is the lateral partial structurtes sectional view of another angle of the micro-channel heat exchanger shown in Fig. 1；

Fig. 7 is the front view of the micro-channel heat exchanger according to another embodiment of this utility model；

Fig. 8 is the left view of the micro-channel heat exchanger shown in Fig. 7；

Fig. 9 is the right view of the micro-channel heat exchanger shown in Fig. 7；

Figure 10 is the top view of the micro-channel heat exchanger shown in Fig. 7；

Figure 11 is the axonometric chart of the micro-channel heat exchanger shown in Fig. 7；

Figure 12 is the force analysis figure of the flat tube tube wall of micro-channel heat exchanger of the prior art；

Figure 13 is the force analysis figure of the flat tube tube wall of micro-channel heat exchanger of the prior art；

Figure 14 is the force analysis figure of the flat tube tube wall of the micro-channel heat exchanger according to this utility model embodiment；

Figure 15 is the force analysis figure of the flat tube tube wall of the micro-channel heat exchanger according to this utility model embodiment.

Reference:

Heat exchanger 100；

First header 1；Insertion groove 11；

Second header 2；

Flat tube 3；First paragraph 31；Interlude 32；Second segment 33；Straight length 321；Bend loss 322；Fin 3211.

Specific embodiment

Embodiment of the present utility model is described below in detail, the example of described embodiment is shown in the drawings, wherein ad initio To the element that same or similar label represents same or similar element or has same or like function eventually.Below by ginseng The embodiment examining Description of Drawings is exemplary, is only used for explaining this utility model, and it is not intended that to of the present utility model Limit.

Of the present utility model description in it is to be understood that term " length ", " width ", " thickness ", " on ", D score, The orientation of instruction such as " vertical ", " level ", " interior ", " outward " or position relationship are based on orientation shown in the drawings or position relationship, It is for only for ease of description this utility model and simplifies description, rather than the device of instruction or hint indication or element must have Specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to restriction of the present utility model.

In description of the present utility model, it should be noted that unless otherwise clearly defined and limited, term " peace Dress ", " being connected ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or integratedly Connect；Can be to be mechanically connected or electrically connect；Can be to be joined directly together it is also possible to be indirectly connected to by intermediary, Can be the connection of two element internals or the interaction relationship of two elements.For those of ordinary skill in the art Speech, can understand concrete meaning in this utility model for the above-mentioned term as the case may be.

Below with reference to Fig. 1-Figure 11, the micro-channel heat exchanger 100 according to this utility model first aspect embodiment is described.

As Figure 1-Figure 11, included according to the micro-channel heat exchanger 100 of this utility model embodiment: the first header 1, Second header 2 and multiple flat tube 3.

As Figure 1-Figure 11, the first header 1 and the second header 2 vertically extend and are arranged side by side, and first It is respectively equipped with multiple horizontal-extending insertion grooves 11 on header 1 and the second header 2, that is, the bearing of trend of insertion groove 11 Axially vertical with the first header 1 and the second header 2, alternatively, the first header 1 and the second header 2 can be only Vertical profiled member, and the first header 1 and the second header 2 independently can be spaced apart setting after molding it is also possible to by the One header 1 is connected with the second header 2 and forms an entirety；Or alternatively, the first header 1 and the second header 2 Can be to be integrally formed part, can be separated by dividing plate between the first header 1 and the second header 2 and form independent coolant Runner.

Flat tube 3 has first paragraph 31, second segment 33 and the interlude 32 being located between first paragraph 31 and second segment 33, flat tube The plane that 3 interlude 32 is located is parallel with vertical plane, and the plane that first paragraph 31 and second segment 33 are located is equal and plane-parallel, The first paragraph 31 of multiple flat tubes 3 is inserted respectively in multiple insertion grooves 11 of the first header 1, the second segment 33 of multiple flat tubes 3 Be inserted respectively in multiple insertion grooves 11 of the second header 2, thus by multiple flat tubes 3 respectively with the first header 1 and second Header 2 is connected to constitute coolant flow pipe, when the first header 1 is located at the upstream side of system coolant, enters first Coolant in header 1 can branch in the flat tube 3 being connected with the first header 1, and coolant flows successively through the first of flat tube 3 It is pooled in the second header 2 after section 31, interlude 32 and second segment 33.Micro-channel heat exchanger 100 of the present utility model, flat tube The axial direction extending perpendicularly to the first header 1 and the second header 2 of 3 insertion grooves 11, so that the first header 1 He The bearing capacity of the second header 2 tube wall is more preferable.

Specifically, can lead in work process in afflux tube wall fluting, groove position stress concentration lost efficacy first, impact collection The overall bearing capacity of flow tube, the insertion groove of the flat tube of micro-channel heat exchanger of the prior art prolongs along the axial direction of header Stretch, the bearing of trend of insertion groove is axially in parallel with header, this kind of mode of grooving leads to header easily to occur Local warping to lose Surely, bearing capacity is low, is not suitable for the higher refrigeration system of operating pressure, and micro-channel heat exchanger of the present utility model 100, flat The insertion groove 11 of pipe 3 extend perpendicularly to header axially, the interlude 32 of flat tube 3 is parallel with vertical plane so that The overall bearing capacity of header is more preferable.Below so that header is as cylindrical structural as a example, (d is illustrated by theoretical derivation For the caliber of header, h is the wall thickness of header, and the wherein wall thickness h of header is much smaller than the caliber d) of header:

(1) Figure 12 and Figure 13 is the force analysis figure of the afflux tube wall in micro-channel heat exchanger of the prior art, root Mutually balance according to the tube wall internal force circumferentially being born and the internal pressure that tube wall is born, using internal force analysis method, intercept one Half header, the internal force that section is born and internal pressure balance in the y-axis direction it may be assumed that

$2f^{\′}={\&integral;}_0^{\mathrm{\π}}{p}^{\′}\frac{d}{2}sin\mathrm{\θ}d\mathrm{\θ}$

F '=0.5p ' d

Wherein f ' is held by afflux tube wall by the internal force being born along header circumferential direction unit length upper tube wall, p ' The internal pressure being subject to.The afflux tube wall internal force f ' that circumferentially direction unit area is born is:

F '=0.5p ' d/h

(2) Figure 14 and Figure 15 is the stress of the afflux tube wall in the micro-channel heat exchanger 100 of this utility model embodiment Analysis chart, mutually balances according to afflux the tube wall internal force bearing vertically and the internal pressure that tube wall is born, using internal force Analysis method, intercepts header along x-y face, and the internal force that header section ring unit length is born is interior with what tube wall was born Portion's pressure balance in the z-axis direction it may be assumed that

$f\·\mathrm{\π}d=p\mathrm{\π}{\left(\frac{d}{2}\right)}^2$

F=0.25pd

The internal force that wherein f is born by header section ring unit length, the internal pressure that p is born by tube wall.Collection Flow tube tube wall perpendicular to the internal force f that axial direction unit area is born is:

F=0.25pd/h

Therefore deduce that, under the conditions of equal pressure condition and physical dimension, micro-channel heat exchanger of the prior art Bearing capacity requirement to header is higher, and the load performance of the micro-channel heat exchanger 100 in this utility model embodiment is excellent Load performance in micro-channel heat exchanger of the prior art.

Need exist for illustrating, the theoretical derivation of above-mentioned header stress is so that header is as cylindrical structural as a example Carry out explanation of deriving, but be not intended as to restriction of the present utility model, the shape of this utility model header is not limited to Cylindrical structural, can also be other arbitrary structures, such as polyhedron shape structure etc..

According to micro-channel heat exchanger 100 of the present utility model, the insertion groove 11 of flat tube 3 extend perpendicularly to the first collection Flow tube 1 and the axial direction of the second header 2, so that the load performance of the first header 1 and the second header 2 tube wall is more preferably, Improve the safety and reliability of micro-channel heat exchanger 100 work, the interlude 32 of flat tube 3 is parallel with vertical plane in addition, can So that the condensed water that micro-channel heat exchanger 100 surface produces directly can flow down along the surface of heat exchanger 100, will not converge long-pending On the surface of heat exchanger 100, thus improving the heat exchange property of heat exchanger 100.

In some embodiments of the present utility model, as Figure 1-Figure 4, the centre of the flat tube 3 of micro-channel heat exchanger 100 Section 32 bending is in the arc-shaped, so that the structure of micro-channel heat exchanger 100 is simple, manufactures, installs, cleaning and easy to maintenance. Further, the insertion groove 11 of the first header 1 is identical with the unlimited direction of the insertion groove 11 of the second header 2, such that it is able to It is easy to the connection between flat tube 3 two ends and the first header 1 and the second header 2.

In some embodiments of the present utility model, as Figure 1-Figure 4, the first header 1 and the second header 2 be each other Neighbouring setting, consequently facilitating the concentrated protection to the first header 1 and the second header 2.

In some embodiments of the present utility model, as shown in Fig. 7-Figure 11, in the flat tube 3 of micro-channel heat exchanger 100 Between section 32 be that the serpentine configuration being connected is spaced successively with bend loss 322 by straight length 321, further, flat tube 3 two neighboring It is additionally provided with fin 3211 between straight length 321, such that it is able to increase the heat exchange area of micro-channel heat exchanger 100, improve heat exchanger 100 heat exchange efficiency.

In some embodiments of the present utility model, as shown in Fig. 1-Fig. 4 and Fig. 7-Figure 11, micro-channel heat exchanger 100 Multiple flat tube 3 vertically interval settings, so that flat tube 3 can be fully contacted with air, improve heat exchanger 100 Heat exchange efficiency.

Alternatively, the first header 1 of micro-channel heat exchanger 100 and the second header 2 are also provided with end cap, rise Effect to closing micro-channel heat exchanger 100 runner.

Refrigeration system according to this utility model second aspect embodiment is described below, including according to this utility model first The micro-channel heat exchanger 100 of aspect embodiment.

According to the refrigeration system of this utility model embodiment, implemented according to the above-mentioned first aspect of this utility model by setting The micro-channel heat exchanger 100 of example is so that refrigeration system operational reliability is higher.

In the description of this specification, reference term " embodiment ", " some embodiments ", " illustrative examples ", The description of " example ", " specific example " or " some examples " etc. means specific features, the knot describing with reference to this embodiment or example Structure, material or feature are contained at least one embodiment of the present utility model or example.In this manual, to above-mentioned art The schematic representation of language is not necessarily referring to identical embodiment or example.And, the specific features of description, structure, material or Person's feature can combine in any one or more embodiments or example in an appropriate manner.

While there has been shown and described that embodiment of the present utility model, it will be understood by those skilled in the art that: Multiple changes, modification, replacement can be carried out to these embodiments in the case of without departing from principle of the present utility model and objective And modification, scope of the present utility model limits by claim and its equivalent.

Claims (8)

1. a kind of micro-channel heat exchanger is it is characterised in that include:

First header and the second header, described first header and described second header vertically extend and side by side Setting, described first header and described second header are respectively equipped with multiple horizontal-extending insertion grooves；

Multiple flat tubes, described flat tube has first paragraph, second segment and the centre being located between described first paragraph and described second segment Section, the plane that described interlude is located is parallel with vertical plane, and the plane that described first paragraph and described second segment are located is equal and level Face is parallel, and the described first paragraph of the plurality of flat tube is inserted respectively in the multiple described insertion groove of described first header, institute The described second segment stating multiple flat tubes is inserted respectively in the multiple described insertion groove of described second header.

2. micro-channel heat exchanger according to claim 1 is it is characterised in that the bending of described interlude is in the arc-shaped.

3. micro-channel heat exchanger according to claim 1 and 2 is it is characterised in that described first header and described second Header is arranged in close proximity to each other.

4. micro-channel heat exchanger according to claim 2 it is characterised in that the insertion groove of described first header with described The unlimited direction of the insertion groove of the second header is identical.

5. micro-channel heat exchanger according to claim 1 is it is characterised in that described interlude is by straight length and bend loss It is spaced connected serpentine configuration successively.

6. micro-channel heat exchanger according to claim 5 is it is characterised in that between the two neighboring straight length of described flat tube It is additionally provided with fin.

7. the micro-channel heat exchanger according to any one of claim 1-6 is it is characterised in that multiple described flat tube is along vertically Direction interval setting.

8. a kind of refrigeration system is it is characterised in that micro-channel heat exchanger according to any one of claim 1-7.