CN205448415U - Heat exchanger - Google Patents

Abstract

The utility model discloses a heat exchanger, include: casing and subcooling pipe. Inject spaced apart heat transfer cavity and subcooling cavity in the casing, be equipped with the refrigerant import of intercommunication heat transfer cavity and the refrigerant export of intercommunication subcooling cavity on the casing, through intercommunication mouthful intercommunication, still be equipped with water inlet and delivery port on the casing between heat transfer cavity and the subcooling cavity, wherein, the neighbouring water inlet setting of refrigerant export. The subcooling pipe is established and is linked to each other with water inlet and delivery port in the subcooling cavity and respectively. According to the utility model discloses a heat exchanger, compact structure, reliable, the cost is lower, has improved the refrigerant super -cooled rate, has increased the unit refrigerating output, has improved the unit efficiency. And the neighbouring water inlet one side at the casing is established in the refrigerant export to make the refrigerant at the in -process that flows from the subcooling cavity, with the intraductal cooling water reverse flow of subcooling, thereby improve the heat transfer difference in temperature, improve the super -cooled rate.

Description

Heat exchanger

Technical field

This utility model relates to refrigeration technology field and technical field of heat exchangers, especially relates to a kind of heat exchanger.

Background technology

In refrigeration systems, condenser directly affects the performance of whole refrigeration system as system critical piece, its performance.Handpiece Water Chilling Units or the condenser of large-scale freezing unit that Large Central Air Conditioning System uses are mainly shell and tube condenser.Increasing degree of supercooling is that one can improve unit refrigerating capacity, promotes the effective ways of unit COP.

The setting of subcooler, a kind of method is to arrange single shell-tube type subcooler or plate type heat exchanger, but pipeline is complicated, and leak point increases, and reduces the reliability of unit, and plate type heat exchanger is relatively costly simultaneously.

Utility model content

This utility model aims to solve the problem that technical problem present in prior art.To this end, this utility model aims to provide a kind of heat exchanger, this heat exchanger can improve the degree of supercooling of cold-producing medium, and structure is reliable simultaneously, cost is the highest.

Heat exchanger according to this utility model embodiment, including: housing, spaced apart heat exchange chamber and supercool chamber is limited in described housing, the refrigerant inlet of described heat exchange chamber and the refrigerant outlet connecting described supercool chamber it is communicated with on described housing, connected by connected entrance between described heat exchange chamber with described supercool chamber, being additionally provided with water inlet and outlet on described housing, wherein, described refrigerant outlet is arranged adjacent to described water inlet；Supercooling tube, in described supercooling tube is located at described supercool chamber and is connected with described water inlet and outlet respectively.

According to the heat exchanger of this utility model embodiment, by arranging the heat exchange chamber and supercool chamber being connected in heat exchanger, and supercooling tube is set in supercool chamber, compact conformation, reliable, cost is relatively low, improves cold-producing medium degree of supercooling, add unit refrigerating capacity, improve unit efficiency.And refrigerant outlet is located at the neighbouring water inlet side of housing, so that cold-producing medium is during flowing out from supercool chamber, and supercooling tube inner cooling water reverse flow, thus improve heat transfer temperature difference, improve degree of supercooling.

In some embodiments, heat exchanger also includes: dividing plate, it is interior so that described enclosure interior to be divided into the described heat exchange chamber and described supercool chamber separated between the upper and lower that described dividing plate is located at described housing, and described refrigerant inlet is located at the top of described dividing plate, and described refrigerant outlet is located at the lower section of described dividing plate.By baffle interval, handling ease, cost is the lowest.

Specifically, described dividing plate is spaced apart with the internal face away from described water inlet of described housing to form described connected entrance.

In some embodiments, heat exchanger also includes: multiple deflection plates, the plurality of deflection plate is located in described supercool chamber at interval, and the plurality of deflection plate is respectively equipped with openings, and the projection on the end face of described housing of the described openings on adjacent two described deflection plates is staggered.Thus, can realize refrigerant liquid baffling in supercool chamber, increase liquid perturbation, destroy fluid boundary layer, increase heat transfer property, improve degree of supercooling, cold-producing medium streams between deflection plate simultaneously, improves supercooling tube efficiency, can improve the advantage such as refrigerating capacity and unit COP.

Specifically, the portion perimeter wall of each described deflection plate is spaced apart with the internal face of described housing to limit corresponding described openings.

More specifically, be respectively equipped with mating holes on the plurality of deflection plate, described supercooling tube is through the corresponding matching hole on the plurality of deflection plate.

Further, heat exchanger also includes pull bar, and described pull bar is fixing with the plurality of deflection plate respectively to be connected.Thereby it is ensured that deflection plate is difficult to topple over when flowing through cold-producing medium, thus ensure the baffling effect of multiple deflection plate.

In certain embodiments, the cross section of described supercool chamber is formed as arch, each described deflection plate is also all formed as arch, and the circular arc periphery wall of described arch contacts connection with the internal perisporium of described housing, and the linear periphery wall of described arch is connected with described baffle contacts.

Specifically, described supercooling tube is that multiple and multiple described supercooling tube interval is arranged.

Additional aspect of the present utility model and advantage will part be given in the following description, and part will become apparent from the description below, or is recognized by practice of the present utility model.

Accompanying drawing explanation

Above-mentioned and/or additional aspect of the present utility model and advantage will be apparent from easy to understand, wherein from combining the accompanying drawings below description to embodiment:

Fig. 1 is the elevational schematic view of the heat exchanger according to this utility model embodiment, and wherein arrow is cold-producing medium baffling direction signal in supercool chamber；

Fig. 2 is the partial schematic sectional view at the first deflection plate of the heat exchanger according to this utility model embodiment；

Fig. 3 is the partial schematic sectional view at the second deflection plate of the heat exchanger according to this utility model embodiment.

Reference:

Heat exchanger 100,

Housing 1, staving 101, tube sheet 102, refrigerant outlet 12, water inlet 13,

Heat exchange chamber 21, supercool chamber 22, connected entrance 23, supercooling tube 3, dividing plate 4,

Deflection plate the 5, first deflection plate the 51, second deflection plate 52, mating holes 53, openings 54, pull bar 6.

Detailed description of the invention

Of the present utility model embodiment is described below in detail, and the example of described embodiment is shown in the drawings, and the most same or similar label represents same or similar element or has the element of same or like function.The embodiment described below with reference to accompanying drawing is exemplary, it is intended to be used for explaining this utility model, and it is not intended that to restriction of the present utility model.

In description of the present utility model, it will be appreciated that, term " " center ", " length ", " width ", " thickness ", on " ", D score, " front ", " afterwards ", " left ", " right ", " vertically ", " level ", " push up ", " end ", " interior ", " outward ", orientation or the position relationship of the instruction such as " axially " 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 indicate or imply that the device of 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.

Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint relative importance or the implicit quantity indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or implicitly include one or more this feature.

In description of the present utility model, unless otherwise clearly defined and limited, term " is connected ", " connection ", " fixing " should be interpreted broadly, and connects for example, it may be fixing, it is also possible to be to removably connect, or integral；Can be to be mechanically connected, it is also possible to be electrical connection；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, can be connection or the interaction relationship of two elements of two element internals.For the ordinary skill in the art, above-mentioned term concrete meaning in this utility model can be understood with concrete condition.

Below with reference to Fig. 1-Fig. 3, the heat exchanger 100 according to this utility model embodiment is described.

Heat exchanger 100 according to this utility model embodiment, as shown in Figure 1-Figure 3, including: housing 1 and supercooling tube 3.Spaced apart heat exchange chamber 21 and supercool chamber 22 is limited in housing 1, housing 1 is provided with refrigerant inlet and refrigerant outlet 12, refrigerant inlet connection heat exchange chamber 21, refrigerant outlet 12 connects supercool chamber 22, is connected by connected entrance 23 between heat exchange chamber 21 with supercool chamber 22.It is additionally provided with water inlet 13 and outlet on housing 1, in supercooling tube 3 is located at supercool chamber 22 and is connected with water inlet 13 and outlet respectively.Wherein, refrigerant outlet 12 is arranged adjacent to water inlet 13.

Namely, the heat exchanger 100 of this utility model embodiment is shell and tube exchanger, and owing to being provided with supercool chamber 22 in housing 1, heat exchanger 100 can be described as built-in subcooler shell and tube condenser.

This embedding structure, it is not necessary to individually package subcooler or plate type heat exchanger, subcooler structural integrity, inside heat exchanger 100, connects without pipeline, and compact conformation, reliability are high, and cost is relatively low.The built-in subcooler of heat exchanger 100 in this utility model embodiment, improves cold-producing medium degree of supercooling, adds unit refrigerating capacity, improve unit efficiency.

The operation principle of this heat exchanger 100 is: cold-producing medium is condensed into liquid after refrigerant inlet enters heat exchange chamber 21, at condensed downward liquid flow to connected entrance 23, and flows into supercool chamber 22 from connected entrance 23.After entering supercool chamber 22, cold-producing medium carries out heat exchange with the cooling water in supercooling tube 3, thus refrigerant temperature is gradually lowered, and the most supercool refrigerant liquid is discharged from refrigerant outlet 12.

Owing to refrigerant outlet 12 is arranged adjacent to water inlet 13, at liquid refrigerant during refrigerant outlet 12 flows, refrigerant liquid and the cooling water reverse flow carrying out heat exchange, improve heat transfer temperature difference, thus improve degree of supercooling further.

Heat exchanger 100 according to this utility model embodiment, by arranging the heat exchange chamber 21 being connected and supercool chamber 22 in heat exchanger 100, and supercooling tube 3 is set in supercool chamber 22, compact conformation, reliable, cost is relatively low, improve cold-producing medium degree of supercooling, add unit refrigerating capacity, improve unit efficiency.And refrigerant outlet 12 is located at neighbouring water inlet 13 side of housing 1, so that cold-producing medium is during flowing out from supercool chamber 22, and supercooling tube 3 inner cooling water reverse flow, thus improve heat transfer temperature difference, improve degree of supercooling.

Specifically, housing 1 includes staving 101 and two tube sheets 102, the both ends open of staving 101, and two tube sheets 102 are respectively provided at the two ends of staving 101 to close housing 1.

This housing 1 is provided with the refrigerant inlet that cold-producing medium is positioned on housing 1 vertical direction, and refrigerant outlet 12 is arranged in the influent side of heat exchanger 100, i.e. refrigerant inlet and is positioned at the top of housing 1, and refrigerant outlet 12 is positioned at the neighbouring water inlet 13 of the bottom of housing 1.In the example of fig. 1, water inlet 13 is located on the front side tube sheet 102 of housing 1, and refrigerant outlet 12 is located at the front side of the bottom of staving 101.

Alternatively, the end of supercooling tube 3 is connected on tube sheet 102, and tube sheet 102 is provided with connecting hole, and supercooling tube 3 expanded joint is in the connecting hole of tube sheet 102.So, it is ensured that the sealing between tube sheet 102 and supercooling tube 3, and improve connection efficiently and good looking appearance.

Specifically, heat exchanger 100 is horizontal condenser, and supercooling tube 3 level is horizontally placed in supercool chamber 22.Supercooling tube 3 is multiple, and multiple supercooling tubes 3 interval is arranged, and the supercool tube bundle of formation is used for making condensating refrigerant liquid the most supercool.

In certain embodiments, as shown in Figure 1-Figure 3, heat exchanger 100 also includes: dividing plate 4, and it is interior to be divided into, by internal for housing 1, the heat exchange chamber 21 and supercool chamber 22 separated between the upper and lower that dividing plate 4 is located at housing 1, refrigerant inlet is located at the top of dividing plate 4, and refrigerant outlet 12 is located at the lower section of dividing plate 4.Being spaced with dividing plate 4, processing is very easy to, and cost is the lowest.

Specifically, housing 1 inner chamber within the case 1, is divided into heat exchange chamber 21 and the supercool chamber 22 of bottom on top by dividing plate 4 horizontal positioned.

More specifically, as it is shown in figure 1, dividing plate 4 is spaced apart with the internal face away from water inlet 13 of housing 1 to form connected entrance 23.As it is shown in figure 1, dividing plate 4 is rectangular slab, two long limits of dividing plate 4 are connected with the internal face of staving 101, and a minor face of dividing plate 4 is connected with one of them tube sheet 102, and another minor face of dividing plate 4 is with another tube sheet 102 separately.I.e. in the horizontal shell and tube type heat exchanger shown in Fig. 1, the length of dividing plate 4 is less than the axial length of housing 1, one end of dividing plate 4 flushes with the tube sheet 102 being provided with water inlet 13, the other end is spaced in intervals with another tube sheet 102, forming connected entrance 23 between dividing plate 4 and another tube sheet 102, cold-producing medium flows into supercool chamber 22 from this.Inside housing 1, supercooling tube 3 lies in a horizontal plane between housing 1 and dividing plate 4.

In certain embodiments, as shown in Figure 1-Figure 3, heat exchanger 100 also includes: multiple deflection plates 5, and multiple deflection plates 5 are located in supercool chamber 22 at interval, being respectively equipped with openings 54 on multiple deflection plates 5, the projection on the end face of housing 1 of the openings 54 on adjacent two deflection plates 5 is staggered.

Namely, the openings 54 on adjacent two deflection plates 5 be not just to, when flowing through a deflection plate 5, the flow direction of refrigerant liquid occurs once to change, and forms the liquid stream of meandering flow.

Thus, refrigerant liquid baffling in supercool chamber 22 can be realized, increase liquid perturbation, destroy fluid boundary layer, increase heat transfer property, improve degree of supercooling, cold-producing medium streams between deflection plate 5 simultaneously, improves supercooling tube 3 efficiency, can improve the advantage such as refrigerating capacity and unit COP.

Specifically, as shown in Figures 2 and 3, the portion perimeter wall of each deflection plate 5 is spaced apart with the internal face of housing 1 to limit corresponding openings 54.Adding man-hour, each deflection plate 5 can be pre-formed into the plate body identical with the shape of cross section of supercool chamber 22, and then the edge at this deflection plate 5 cuts out one piece and forms breach, and this breach forms corresponding openings 54.

Certainly, in embodiment of the present utility model, openings 54 also can be not limited to be located at the edge of deflection plate 5, as long as the openings 54 on adjacent two deflection plates 5 is staggered.

In a concrete example, housing 1 is cylindrical, and dividing plate 4 is located at the position, partial below of housing 1 so that the cross section of supercool chamber 22 is formed as arch.Each deflection plate 5 is also all formed as arch, and the circular arc periphery wall of arch contacts connection with the internal perisporium of housing 1, and the linear periphery wall of arch contacts connection with dividing plate 4.

Wherein, multiple deflection plates 5 are respectively perpendicular the lower surface being connected to dividing plate 4, and multiple deflection plates 5 be arranged in parallel at equal intervals along the length direction of dividing plate 4.Wherein, the deflection plate 5 of each arch forms breach at tip portion, thus this deflection plate 5 forms openings 54 after being connected with the internal perisporium of dividing plate 4, housing 1.Breach is formed at the opposite tip of adjacent two deflection plates 5, as shown in Figures 2 and 3, multiple deflection plates 5 include multiple first deflection plate 51 and multiple second deflection plate 52, multiple first deflection plates 51 are arranged alternately with multiple second deflection plates 52, multiple first deflection plates 51 form breach in right-hand member tip, multiple second deflection plates 52 form breach in left end tip, are equivalent to multiple first deflection plate 51 and excise right tip for cambered plate, and multiple second deflection plates 52 excise left tip for cambered plate.

In the example of Fig. 2 and Fig. 3, first deflection plate 51 is identical with the second deflection plate 52 area, symmetrical shape, adding man-hour and can be processed into the deflection plate of same shape, then when assembling, a part of deflection plate is clubhauled, thus can form multiple first deflection plates 51 and multiple second deflection plates 52 that left and right is alternately arranged, the deflection plate so arranged, processing capacity greatly reduces.

Owing to housing 1 is cylindrical, deflection plate 5 is formed band arch jaggy, deflection plate can be enable to be connected with cylindrical housings 1, dividing plate 4 well fixing.Multiple first deflection plates 51 are arranged alternately with multiple second deflection plates 52, can play baffling and increase the effect of cold-producing medium disturbance.

Wherein, refrigerant flow rates as required selectes the quantity of deflection plate 5, and in supercool chamber 22, left and right is alternately arranged, uniform to ensure supercooled liquid flow velocity.

Select to be formed at openings 54 point of the deflection plate 5 of arch, not only convenient processing, and avoid the diapire of the supercool chamber of distance from bottom 22 of openings 54 too high, thus avoid refrigerant liquid to be arrested in supercool chamber 22.

Specifically, as shown in Figures 2 and 3, multiple deflection plates 5 being respectively equipped with mating holes 53, supercooling tube 3 is through the corresponding matching hole 53 on multiple deflection plates 5.So, polylith deflection plate 5 support, it is ensured that supercooling tube 3 can firmly be located in supercool chamber 22.

Further, as shown in Figure 1-Figure 3, heat exchanger 100 also includes pull bar 6, pull bar 6 is fixing with multiple deflection plates 5 respectively to be connected, multiple deflection plates 5 are fixed on pull bar 6, and multiple deflection plates 5 connect one entirety of formation, then are fixed on housing 1, when ensureing to flow through cold-producing medium, deflection plate 5 is difficult to topple over, thus ensures the baffling effect of multiple deflection plate 5.In the example of fig. 1, pull bar 6 is three.

In the concrete example of Fig. 1-Fig. 3, in heat exchanger 100, after the cold-producing medium of entrance heat exchange chamber 21 is condensed into liquid, it is collected on dividing plate 4, flow to connected entrance 23 and enter supercool chamber 22.After entering supercool chamber 22, liquid refrigerant and the cooling water coke slurry heat in supercooling tube 3, gradually reduce temperature, because refrigerant liquid flow velocity in supercool chamber 22 is relatively low, for laminar condition, having boundary region, heat transfer coefficient is low, and first deflection plate the 51, second deflection plate 52 arranging equidistant placement can change flow direction, cold-producing medium washes away supercooling tube 3, produce bigger flow-disturbing, thus improve heat transfer coefficient, increase degree of supercooling.Simultaneously refrigerant liquid with carry out the cooling water reverse flow of heat exchange, improve heat transfer temperature difference, improve degree of supercooling further.

In this embodiment, add first to be respectively welded by multiple deflection plates 5 man-hour and be connected on dividing plate 4, then the dividing plate 4 with deflection plate 5 is welded to connect on staving 101, finally two tube sheets 102 are respectively fixedly connected with at the two ends of staving 101, and the tube sheet 102 being provided with water inlet 13 is welded to connect with dividing plate 4, the heat exchanger 100 of this spline structure, convenient fixing.

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

Embodiment the most of the present utility model, it will be understood by those skilled in the art that: these embodiments can carry out in the case of without departing from principle of the present utility model and objective multiple change, revise, replace and modification, scope of the present utility model is limited by claim and equivalent thereof.

Claims (9)

1. a heat exchanger, it is characterised in that including:

Housing, spaced apart heat exchange chamber and supercool chamber is limited in described housing, the refrigerant inlet of described heat exchange chamber and the refrigerant outlet connecting described supercool chamber it is communicated with on described housing, connected by connected entrance between described heat exchange chamber with described supercool chamber, water inlet and outlet it is additionally provided with on described housing, wherein, described refrigerant outlet is arranged adjacent to described water inlet；

Supercooling tube, in described supercooling tube is located at described supercool chamber and is connected with described water inlet and outlet respectively.

Heat exchanger the most according to claim 1, it is characterized in that, also include: dividing plate, it is interior so that described enclosure interior to be divided into the described heat exchange chamber and described supercool chamber separated between the upper and lower that described dividing plate is located at described housing, described refrigerant inlet is located at the top of described dividing plate, and described refrigerant outlet is located at the lower section of described dividing plate.

Heat exchanger the most according to claim 2, it is characterised in that described dividing plate is spaced apart with the internal face away from described water inlet of described housing to form described connected entrance.

Heat exchanger the most according to claim 2, it is characterized in that, also include: multiple deflection plates, the plurality of deflection plate is located in described supercool chamber at interval, being respectively equipped with openings on the plurality of deflection plate, the projection on the end face of described housing of the described openings on adjacent two described deflection plates is staggered.

Heat exchanger the most according to claim 4, it is characterised in that the portion perimeter wall of each described deflection plate is spaced apart with the internal face of described housing to limit corresponding described openings.

Heat exchanger the most according to claim 4, it is characterised in that be respectively equipped with mating holes on the plurality of deflection plate, described supercooling tube is through the corresponding matching hole on the plurality of deflection plate.

Heat exchanger the most according to claim 4, it is characterised in that also include pull bar, described pull bar is fixing with the plurality of deflection plate respectively to be connected.

Heat exchanger the most according to claim 4, it is characterized in that, the cross section of described supercool chamber is formed as arch, each described deflection plate is also all formed as arch, the circular arc periphery wall of described arch contacts connection with the internal perisporium of described housing, and the linear periphery wall of described arch is connected with described baffle contacts.

Heat exchanger the most according to claim 1, it is characterised in that described supercooling tube is that multiple and multiple described supercooling tube interval is arranged.