CN105318605A - Parallel flow heat exchanger and air conditioner with same - Google Patents
Parallel flow heat exchanger and air conditioner with same Download PDFInfo
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- CN105318605A CN105318605A CN201410342901.9A CN201410342901A CN105318605A CN 105318605 A CN105318605 A CN 105318605A CN 201410342901 A CN201410342901 A CN 201410342901A CN 105318605 A CN105318605 A CN 105318605A
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Abstract
The invention provides a parallel flow heat exchanger and an air conditioner with the same. The parallel flow heat exchanger comprises a first flow collecting pipe, a first pipe, a second pipe a second flow collecting pipe, multiple flat pipe and a distributing assembly; the interior of the first flow collecting pipe is divided into an upper chamber and a lower chamber through a first partition plate; the first pipe and the second pipe are communicated with the first upper chamber and the lower chamber respectively; the interior of the second flow collecting pipe is divided into multiple sub-chambers through multiple partition assemblies, and the sub-chambers are communicated with one another through channels formed in the partition assemblies; the distributing assembly comprises a distributing box with a distributing cavity and an inlet pipeline and at least one outlet pipeline which are communicated with the distributing cavity, the inlet pipeline is communicated with the lowermost sub-chamber, and the outlet pipelines are communicated with the other sub-chambers respectively. According to the parallel flow heat exchanger, refrigerating agent distribution is uniform, and the heat exchange effect is good.
Description
Technical field
The present invention relates to air-conditioning technical field, especially design a kind of parallel-flow heat exchanger and the air-conditioner with this parallel-flow heat exchanger.
Background technology
Parallel-flow heat exchanger primarily of have multiple microchannel flat tube, be clipped in fin between flat tube, header and for compositions such as the input pipe of cold-producing medium turnover and efferent ducts, almost all be made up of similar aluminum material, there is the advantages such as heat exchange efficiency is high, compact conformation, with low cost, production process is simple, thus more and more paid attention in field of air conditioning and apply.
The application of current parallel-flow heat exchanger turns to air conditioner system by single cooler system, for parallel-flow heat exchanger that is existing, that be applied to air conditioner, when parallel-flow heat exchanger is as evaporimeter, due to much lower compared with during condensation of the pressure of cold-producing medium, therefore cold-producing medium produces gas-liquid layering in header, because fluid density is larger than gas, therefore the lower liquid of header is many, upper liquid is few, thus cause the distribution of the cold-producing medium in each flat tube unbalanced, have a strong impact on heat transfer effect.
Summary of the invention
The present invention is intended at least to solve one of technical problem existed in prior art.For this reason, one object of the present invention is to propose a kind of parallel-flow heat exchanger, the cold-producing medium distributed uniform of this parallel-flow heat exchanger, good effect of heat exchange.
Another object of the present invention is to propose a kind of air-conditioner with this parallel-flow heat exchanger.
The parallel-flow heat exchanger of embodiment according to a first aspect of the present invention, comprising: the first header, becomes two isolated first upper chamber and the first lower chambers in described first header by the first baffle for separating; First pipe and the second pipe, described first pipe is communicated with the first lower chambers with described first upper chamber respectively with the second pipe; Second header, described second header and described first header be arranged in parallel, and be separated into multiple sub-chamber by multiple partition component in described second header, described multiple sub-chamber is by being formed in the channel connection on described partition component; Multiple flat tube, described multiple flat tube to be connected to abreast between described first header and described second header and to be communicated with described second header with described first header respectively; Allocation component, described allocation component comprises the distributor disk with distribution cavity and the entrance pipe be communicated with described distribution cavity respectively and at least one export pipeline, described entrance pipe is communicated with the sub-chamber being positioned at bottom in described multiple sub-chamber, and at least one export pipeline described is communicated with sub-chamber described in all the other respectively.
According to the parallel-flow heat exchanger of the embodiment of the present invention, kind of refrigeration cycle and what heat that circulating refrigerant sidles at the second header is different passages, especially when parallel-flow heat exchanger is as evaporimeter, cold-producing medium can be distributed by allocation component, avoid the too serious of the refrigerant air-liquid layering in superposed flat tube, by adjusting length or the internal diameter of export pipeline, evaporation process is made to be tending towards optimum, finally substantially solve the refrigerant air-liquid layering and maldistribution phenomenon that heat circulation, substantially increase parallel-flow heat exchanger heat exchange efficiency in different modes.
To sum up, by arranging allocation component, effectively can solve cold-producing medium and distribute uneven problem, improve the heat exchange efficiency of parallel-flow heat exchanger, and the structure of allocation component is reliable, therefore can be applicable to produce in enormous quantities.
In addition, according to parallel-flow heat exchanger of the present invention, also there is following additional technical feature:
Preferably, the described partition component and described first dividing plate that are positioned at bottom in described multiple partition component are positioned on same level height.
Alternatively, described partition component comprises three, and is separated into four sub-chamber by described second header, and the export pipeline of described allocation component is three.
According to one embodiment of present invention, described partition component is second partition, and wherein said passage is be formed in the bulkhead through-hole on described second partition.
According to one embodiment of present invention, described partition component is device in one-way on state, and described device in one-way on state is configured to one-way conduction from top to bottom.
According to one embodiment of present invention, each described device in one-way on state comprises: be adapted to fit in the cylindrical shell in described second header, the open at its lower end of described cylindrical shell and upper end has apical pore; Partition, described partition is located in described cylindrical shell movably, described partition be configured to when it and fit in described cylindrical shell upper end time shutoff described in apical pore and the liquid be positioned at when it departs from described cylindrical shell upper end above described partition discharges described cylindrical shell downwards by it.
According to one embodiment of present invention, described partition has multiple partition hole running through it, the projection of described apical pore on described partition and described multiple partition hole all spaced apart.
Preferably, the edge of the contiguous described partition in described multiple partition hole arranges and is uniformly distributed circumferentially.
Preferably, described partition hole is four.
According to one embodiment of present invention, the edge of described partition has at least one groove inwardly concaved.
Alternatively, described groove type becomes square groove, dovetail groove or deep-slotted chip breaker.
Alternatively, described groove is 3-8.
Preferably, the height of described cylindrical shell is less than 30mm.
According to one embodiment of present invention, each described device in one-way on state comprises: be adapted to fit in the body in described second header, described body is formed as tabular, described body has the body apertures running through it; Shut, described shut is connected on the lower surface of described body, and open between the open position of described body apertures and the closed position closing described body apertures movable.
According to one embodiment of present invention, described shut is connected on the lower surface of described body pivotly.
Alternatively, the lower surface of described body has the first recess to being recessed on, wherein said body apertures is formed in described first recess place, and described shut is connected on the sidewall of described first recess pivotly.
Preferably, when described shut closes described body apertures, the lower surface of described shut is concordant with the lower surface of described body.
Alternatively, described first recess is formed as rectangular area.
According to one embodiment of present invention, the lower surface of described body has the second recess to being recessed on, wherein said body apertures is formed in described second recess place, described shut is the flexible arc plate being formed as protruding downwards, and oppositely protrudes towards described second recess when described shut is configured to the power be subject to upwards and close described body apertures.
Alternatively, the end face of described second recess is formed as arcuate shape.
Alternatively, the projection on the body of described second recess is formed as rectangle.
The air-conditioner of embodiment according to a second aspect of the present invention, comprises parallel-flow heat exchanger described according to a first aspect of the present invention.
Additional aspect of the present invention and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage will become obvious and easy understand from accompanying drawing below combining to the description of embodiment, wherein:
Fig. 1 is the stereogram of the parallel-flow heat exchanger according to the embodiment of the present invention;
Fig. 2 is the stereogram of device in one-way on state according to an embodiment of the invention, it illustrates the structure of the partition of an example;
Fig. 3 is the structural representation of the partition of another example of the device in one-way on state shown in Fig. 2;
Fig. 4 is the stereogram of device in one-way on state in accordance with another embodiment of the present invention;
Fig. 5 is the stereogram of the device in one-way on state according to another embodiment of the present invention;
Fig. 6 is the sectional view of the device in one-way on state shown in Fig. 5.
Reference numeral:
Parallel-flow heat exchanger 100;
First header 1; First dividing plate 11; First upper chamber 111; First lower chambers 112;
First pipe 2; Second pipe 3; Second header 4; Sub-chamber 41; Blanking cover 42;
Flat tube 5; Allocation component 6; Distributor disk 61; Entrance pipe 62; Export pipeline 63;
Second partition 71; Bulkhead through-hole 711;
Device in one-way on state 72;
Cylindrical shell 721; Apical pore 7211;
Partition 722; Partition hole 7221; Groove 7222;
Body 723; Body apertures 7231; First recess 7232; Second recess 7233; Shut 724.
Detailed description of the invention
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.
In describing the invention, it will be appreciated that, term " on ", the orientation of the instruction such as D score, "front", "rear", "left", "right" or position relationship be based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as limitation of the present invention.In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise one or more these features.In describing the invention, except as otherwise noted, the implication of " multiple " is two or more.
In describing the invention, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, concrete condition above-mentioned term concrete meaning in the present invention can be understood.
Below with reference to Fig. 1, the parallel-flow heat exchanger 100 according to the embodiment of the present invention is described, parallel-flow heat exchanger 100 according to the embodiment of the present invention can use as outdoor unit heat exchanger, certain the present invention is not limited to this, and this parallel-flow heat exchanger 100 can also use as indoor set heat exchanger.In other words, this parallel-flow heat exchanger 100 can carry out condensation as condenser to cold-producing medium, also can evaporate cold-producing medium as evaporimeter.
As described in Figure 1, comprise according to the parallel-flow heat exchanger 100 of the embodiment of the present invention: the first header 1, first pipe 2, second pipe 3, second header 4, multiple flat tube 5 and allocation component 6.
Is separated into two isolated first upper chamber 111 and the first lower chambers 112 by the first dividing plate 11 in first header 1, " the first upper chamber 111 and the first lower chambers 112 spaced apart " refers to and is not communicated with between the first upper chamber 111 and the first lower chambers 112.First pipe 2 is communicated with the first upper chamber 111, and the second pipe 3 is communicated with the first lower chambers 112, and wherein the first pipe 2 and the second pipe 3 are respectively as the input pipe of cold-producing medium or efferent duct.
Second header 4 and the first header 1 be arranged in parallel, alternatively, when parallel-flow heat exchanger 100 is installed in refrigeration plant, the first header 1 and the second header 4 can extend along the vertical direction, in left-right direction positioned at intervals install, such as, direction shown in Fig. 1.Wherein, be separated into multiple sub-chamber 41 by multiple partition component in the second header 4, multiple sub-chamber 41 is by being formed in the channel connection on partition component, and that is, cold-producing medium mutually can flow, mix in multiple sub-chamber 41.
In the example depicted in fig. 1, partition component is second partition 71, wherein passage is the bulkhead through-hole 711 be formed on second partition 71, that is, multiple sub-chamber 41 is interconnected respectively by the bulkhead through-hole 711 on second partition 71, and cold-producing medium through the bulkhead through-hole 711 on second partition 71 and then can enter in adjacent sub-chamber 41.
Multiple flat tube 5 to be connected to abreast between the first header 1 and the second header 4 and to be communicated with the second header 4 with the first header 1 respectively.The opposite face of the first header 1 and the second header 4 outputs flat tube groove one to one, the left end of flat tube 5 inserts in the flat tube groove of the first header 1, the right-hand member of flat tube 5 inserts in the flat tube groove of the second header 4, fin (scheming not shown) is set between adjacent flat tube 5, the two ends of the first header 1 and the second header 4 are provided with blanking cover 42, to play sealing function.
Here it should be explained that, when parallel-flow heat exchanger 100 is as condenser, because cold-producing medium pressure ratio of cold-producing medium when condensation is higher, when the Sizes of the bulkhead through-hole 711 of second partition 71, the proportion that cold-producing medium accounts for whole condensation of refrigerant pressure by the pressure drop that bulkhead through-hole 711 produces is very little, and the volume of unit mass cold-producing medium can shrink during condensation, therefore cold-producing medium limit condensation side is by bulkhead through-hole 711 not too large problem, but when parallel-flow heat exchanger 100 is used as evaporimeter, its situation then there occurs change, when cold-producing medium evaporates, cold-producing medium in second header 4 is gas-liquid two-phase state, the cold-producing medium of the second header 4 will make a reasonable distribution in each sub-chamber 41 obviously, but much lower compared with during condensation of the pressure of cold-producing medium during evaporation, therefore cold-producing medium has gas-liquid layering at the second header 4, because fluid density is larger than gas, therefore the lower liquid of the second header 4 is many, upper liquid is few, thus it is unbalanced to cause the cold-producing medium in superposed sub-chamber 41 to distribute, and the cold-producing medium sendout adjusted by the size of the bulkhead through-hole 711 on adjustment second partition 71 in corresponding sub-chamber 41, also the refrigerant amount being only applicable to sub-chamber 41 demand on top is less than the situation of the sub-chamber 41 of bottom, and the refrigerant amount of sub-chamber 41 demand on top is greater than the situation of bottom sub-chamber 41, be just difficult to reach.
The present inventor just proposes and on the second header 4, arranges allocation component 6 solve this problem thus, particularly, as shown in Figure 1, allocation component 6 comprises the distributor disk 61 with distribution cavity and the entrance pipe 62 be communicated with distribution cavity respectively and at least one export pipeline 63, entrance pipe 62 is communicated with the sub-chamber 41 being positioned at bottom in multiple sub-chamber 41, and at least one export pipeline 63 is communicated with all the other sub-chamber 41 respectively.That is, entrance pipe 62 and one_to_one corresponding identical with the quantity of sub-chamber 41 with the quantity sum of export pipeline 63, such as sub-chamber 41 comprises two, then export pipeline 63 comprises one; Such as sub-chamber 41 comprises three, then export pipeline 63 comprise two and two export pipelines 63 respectively be positioned at the top and be communicated with middle sub-chamber 41; In example such as shown in Fig. 1, partition component comprises three, three partition components are separated into four sub-chamber 41 by the second header 4, the export pipeline 63 of allocation component 6 is three, its excess-three sub-chamber 41 of the sub-chamber 41 of the removing bottom in three corresponding four sub-chamber 41 of export pipeline 63 difference; Such as partition component comprises four again, four partition components are separated into five sub-chamber 41 by the second header 4, the export pipeline 63 of allocation component 6 is four, all the other four sub-chamber 41 of the sub-chamber 41 of the removing bottom in four corresponding five sub-chamber 41 of export pipeline 63 difference.Wherein, above-mentioned example all effectively can be distributed the cold-producing medium entered in the second header 4, avoids refrigerant air-liquid layering too serious, improves heat transfer effect.
Alternatively, have a hole in the bottom sides of the sub-chamber 41 of the bottom of the second header 4, entrance pipe 62 is inserted in the sub-chamber 41 of bottom by this hole, and the other end of entrance pipe 62 is communicated with the distribution cavity in distributor disk 61.In example as shown in Figure 1, one end of three export pipelines 63 can be inserted in corresponding sub-chamber 41 respectively by the hole on corresponding sub-chamber 41 upper side wall, and the other end of three export pipelines 63 is all communicated with the distribution cavity in distributor disk 61.
Advantageously, the partition component and the first dividing plate 11 that are positioned at bottom in multiple partition component are positioned on same level height, the flat tube 5 be communicated with the first lower chambers 112 so is also only communicated with the sub-chamber 41 being positioned at bottom of the second header 4 simultaneously, the structure of parallel-flow heat exchanger 100 can be made so more reasonable, the utilization rate of flat tube 5 is the highest, does not have flat tube 5 and is shorted (namely cold-producing medium can flow through all flat tubes 5).
Below with reference to Fig. 1, the flow direction of parallel-flow heat exchanger 100 respectively as cold-producing medium when condenser and evaporimeter is described.
When parallel-flow heat exchanger 100 is as condenser, its refrigerant flow direction is as shown in the filled arrows in Fig. 1, the cold-producing medium of HTHP enters in the first upper chamber 111 of the first header 1 from the first pipe 2, then be assigned in the flat tube 5 be communicated with the first upper chamber 111 and carry out condensation, cold-producing medium out enters the sub-chamber 41 of the second header 4 from flat tube 5 afterwards, by arranging the aperture of rational bulkhead through-hole 711, can ensure that most of cold-producing medium passes through from the bulkhead through-hole 711 of second partition 71 and enters puts in place in the sub-chamber 41 of bottom, then cold-producing medium is redistributed in the flat tube 5 be connected with the sub-chamber 41 of this bottom and continues condensation.After condensation completes, cold-producing medium collects in the first lower chambers 112 of the first header 1, flows out finally by the second pipe 3.
When parallel-flow heat exchanger 100 is as evaporimeter, its refrigerant flow direction is as shown in the hollow arrow in Fig. 1, the cold-producing medium of low-pressure gas-liquid two-phase enters in the first lower chambers 112 of the first header 1 by the second pipe 3, then cold-producing medium is assigned in the flat tube 5 be connected with the first lower chambers 112 and evaporates, after flowing through corresponding flat tube 5, cold-producing medium enters into the sub-chamber 41 being arranged in bottom of the second header 4 again after having evaporated a part, now be arranged in the cold-producing medium meeting layering of the sub-chamber 41 of bottom, the liquid refrigerant major part that density is larger is sunken to the bottom of this sub-chamber 41, therefore liquid refrigerant can flow into from the entrance pipe 62 of allocation component 6, and be assigned in each export pipeline 63 in distributor disk 61, guiding through corresponding export pipeline 63 enters into the corresponding sub-chamber 41 of the second header 4 respectively, cold-producing medium in corresponding sub-chamber 41 flows in the flat tube 5 be communicated with each sub-chamber 41 respectively, in corresponding flat tube 5, each road cold-producing medium continues flow and evaporate, until cold-producing medium collects in the first upper chamber 111 of the first header 1, parallel-flow heat exchanger 100 is flowed out finally by the first pipe 2.
By finding out in description above, according to the parallel-flow heat exchanger 100 of the embodiment of the present invention, kind of refrigeration cycle and what heat that circulating refrigerant sidles at the second header 4 is different passages, especially when parallel-flow heat exchanger 100 is as evaporimeter, cold-producing medium can be distributed by allocation component 6, avoid the too serious of the refrigerant air-liquid layering in superposed flat tube 5, by adjusting length or the internal diameter of export pipeline 63, evaporation process is made to be tending towards optimum, finally substantially solve the refrigerant air-liquid layering and maldistribution phenomenon that heat circulation, substantially increase parallel-flow heat exchanger 100 heat exchange efficiency in different modes.
To sum up, by arranging allocation component 6, effectively can solve cold-producing medium and distribute uneven problem, improve the heat exchange efficiency of parallel-flow heat exchanger 100, and the structure of allocation component 6 is reliable, therefore can be applicable to produce in enormous quantities.
According to the parallel-flow heat exchanger 100 of the embodiment of the present invention, due to the second partition 71 in the second header 4 being formed with bulkhead through-hole 711, each sub-chamber 41 is communicated with by bulkhead through-hole 711, like this when outlet assignment system cryogen, have a small amount of cold-producing medium between adjacent sub-chamber 41 to be exchanged by bulkhead through-hole 711, therefore this parallel-flow heat exchanger 100 also can be subject to the impact of bulkhead through-hole 711 to a certain extent when carrying out evaporimeter.
Partition component improves by the present inventor further thus, describes the partition component according to different embodiments of the invention below with reference to Fig. 2-Fig. 6.
As shown in Fig. 2-Fig. 6, can also be device in one-way on state 72 according to the partition component of the present embodiment, that is, above-mentioned second partition 71 can be replaced by device in one-way on state 72.Device in one-way on state 72 is configured to one-way conduction from top to bottom, wherein the direction of above-below direction for indicating in Fig. 1, and namely this device in one-way on state 72 can allow cold-producing medium to flow from the top down, and stops cold-producing medium to flow from bottom to top.Like this when parallel-flow heat exchanger 100 is as condenser, in the second header 4, cold-producing medium can flow to the sub-chamber 41 of below from the sub-chamber 41 of top by device in one-way on state 72; When parallel-flow heat exchanger 100 is as evaporimeter, cold-producing medium flows from bottom to top in the second header 4, because device in one-way on state 72 stops cold-producing medium flowing from bottom to top, therefore the cold-producing medium in the second header 4 is cut off by device in one-way on state 72 and can not circulate in each sub-chamber 41, now just cold-producing medium can be assigned in each sub-chamber 41 only by allocation component 6, the impact that the bulkhead through-hole 711 of second partition 71 as shown in Figure 1 distributes cold-producing medium can be avoided thus.
In one embodiment of the invention, as shown in Fig. 2-Fig. 3, device in one-way on state 72 comprises: cylindrical shell 721 and partition 722, cylindrical shell 721 is adapted to fit in the second header 4, the external diameter of cylindrical shell 721 preferably equals or is slightly smaller than the internal diameter of the second header 4, can be located at stably, easily in the second header 4 to make cylindrical shell 721.Wherein, the open at its lower end of cylindrical shell 721 and upper end has apical pore 7211, apical pore 7211 runs through the roof of cylindrical shell 721, and partition 722 is located in cylindrical shell 721 movably, and the external diameter of partition 722 is slightly smaller than the internal diameter of cylindrical shell 721.Wherein, partition 722 be configured to when it and fit in cylindrical shell 721 upper end time shutoff the apical pore 7211 and liquid be positioned at when it departs from cylindrical shell 721 upper end above partition 722 discharges cylindrical shell 721 downwards by it, that is, shutoff apical pore 7211 when partition 722 is fitted with the roof of the cylindrical shell 721 and liquid be positioned at when it departs from the roof of cylindrical shell 721 above partition 722 discharges cylindrical shell 721 downwards by it.
Thus, when device in one-way on state 72 is installed in the second header 4, when cold-producing medium flows from top to bottom, can enter in cylindrical shell 721 by apical pore 7211, due to the flowing pressure of cold-producing medium, partition 722 is pulled to the bottom of cylindrical shell 721, and now partition 722 can be used for cold-producing medium to flow out, thus cold-producing medium can discharge cylindrical shell 721, device in one-way on state 72 can be utilized like this to be communicated with adjacent sub-chamber 41; When cold-producing medium flows from bottom to top, first partition 722 moves up under the flowing pressure effect of cold-producing medium, when partition 722 is pulled to the top of cylindrical shell 721, partition 722 is just by apical pore 7211 shutoff, and now cold-producing medium can not be entered in adjacent sub-chamber 41 by cylindrical shell 721.To sum up, when parallel-flow heat exchanger 100 is as condenser, device in one-way on state 72 can be communicated with adjacent sub-chamber 41; When parallel-flow heat exchanger 100 is as evaporimeter, device in one-way on state 72 can the adjacent sub-chamber 41 of shutoff.The height of its middle cylinder body 721 is less than 30mm, because the structure of the second header 4 limits, by by the Altitude control of cylindrical shell 721 in the scope being less than 30mm, thus can be located at after in the second header 4 and can not produce too much interference by cylindrical shell 721, thus the structure of the second header 4 being provided with cylindrical shell 721 can be made unaffected.
In a concrete example of the present invention, as shown in Figure 2, partition 722 has multiple partition hole 7221 running through it, the projection of apical pore 7211 on partition 722 and multiple partition hole 7221 all spaced apart, namely apical pore 7211 can not overlap with partition hole 7221, like this when partition 722 move to contact with the roof of cylindrical shell 721 time, partition 722 will block apical pore 7211, passes through to stop cold-producing medium.When partition 722 moves to the bottom of cylindrical shell 721, due to the bottom-open of cylindrical shell 721, partition hole 7221 can not be blocked completely, therefore cold-producing medium can enter respectively by apical pore 7211 and partition hole 7221, outflow tube 721.Preferably, the edge of the contiguous partition 722 in multiple partition hole 7221 arranges and is uniformly distributed circumferentially, and makes the structure of partition 722 simple and reasonable thus.In an example of the present invention, partition hole 7221 is four.
In another concrete example of the present invention, as shown in Figure 3 shown in example, with the example shown in Fig. 2 unlike, the edge of partition 722 has at least one groove 7222 inwardly concaved.In projection in the vertical direction, groove 7222 does not overlap with apical pore 7211, limits the through hole for flow of refrigerant between the inwall of groove 7222 and cylindrical shell 721.Alternatively, groove 7222 is formed as square groove, dovetail groove or deep-slotted chip breaker, and the shape of groove 7222 can be made so more diversified, and groove 7222 can adapt to the use of more industrial situations.Alternatively, groove 7222 is 3-8.
In another embodiment of the present invention, as Figure 4-Figure 6, device in one-way on state 72 comprises: be adapted to fit in the body 723 in the second header 4 and shut 724.Body 723 is formed as tabular, and body 723 has the body apertures 7231 running through it, shut 724 is connected on the lower surface of body 723, and shut 724 open body apertures 7231 open position and close body apertures 7231 closed position between movable.Particularly, when cold-producing medium flows from the top down, shut 724 can be forced to open body apertures 7231; When cold-producing medium flows from bottom to top, shut 724 can be forced to close body apertures 7231.
In a concrete example of the present invention, as shown in Figure 4, shut 724 is connected on the lower surface of body 723 pivotly.Namely one end of shut 724 is connected on the lower surface of body 723, and the other end is free end, can carry out the pivotable of certain angle around body 723.Particularly, the lower surface of body 723 has the first recess 7232 to being recessed on, wherein body apertures 7231 is formed in the first recess 7232 place, shut 724 is connected on the sidewall of the first recess 7232 pivotly, and when shut 724 closes body apertures 7231, the lower surface of shut 724 is concordant with the lower surface of body 723.The simple and reasonable for structure of body 723 and shut 724 can be made thus, and because shut 724 is when enclosed body hole 7231, the lower surface of shut 724 is concordant with the lower surface of body 723, can not produce interference thus to the flowing of the cold-producing medium in the second header 4.Alternatively, the first recess 7232 is formed as rectangular area, and the structure of body 723 is simpler thus.
In another concrete example of the present invention, as shown in Figure 5 and Figure 6, the lower surface of body 723 has the second recess 7233 to being recessed on, wherein body apertures 7231 is formed in the second recess 7233 place, shut 724 for being formed as the flexible arc plate protruded downwards, and oppositely protrudes and enclosed body hole 7231 towards the second recess 7233 when shut 724 is configured to the power be subject to upwards.Like this when cold-producing medium flows from the top down, shut 724 can be forced to be bent downwardly distortion, can expose body apertures 7231 like this, cold-producing medium can pass through; When cold-producing medium flows from bottom to top, cold-producing medium can force shut 724 to be bent upwards distortion until shutoff body apertures 7231, and then intercepts cold-producing medium.Advantageously, the end face of the second recess 7233 is formed as arcuate shape, like this when shut 724 upwards completely shutoff body apertures 7231 time, shut 724 can farthest and the end face of the second recess 7233 fit, plugging effect can be made so better, more tightly.Alternatively, the second projection of recess 7233 on body 723 is formed as rectangle, makes the structure of body 723 simpler thus.
According to the parallel-flow heat exchanger 100 of the embodiment of the present invention, uneven problem can be distributed by effective solution cold-producing medium, improve the heat exchange efficiency of parallel-flow heat exchanger 100, and the structure of allocation component 6 be reliable, therefore can be applicable to produce in enormous quantities.
The air-conditioner of embodiment according to a second aspect of the present invention, comprises the parallel-flow heat exchanger 100 of embodiment according to a first aspect of the present invention.By arranging this parallel-flow heat exchanger 100, thus it is good to have performance, refrigeration or heating efficiency high.
Be all known according to other configuration examples of the air-conditioner of the embodiment of the present invention for those of ordinary skills as compressor and throttling arrangement etc. and operation, be not described in detail here.
In the description of this description, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " illustrative examples ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
Although illustrate and describe embodiments of the invention, those having ordinary skill in the art will appreciate that: can carry out multiple change, amendment, replacement and modification to these embodiments when not departing from principle of the present invention and aim, scope of the present invention is by claim and equivalents thereof.
Claims (22)
1. a parallel-flow heat exchanger, is characterized in that, comprising:
First header, becomes two isolated first upper chamber and the first lower chambers by the first baffle for separating in described first header;
First pipe and the second pipe, described first pipe is communicated with the first lower chambers with described first upper chamber respectively with the second pipe;
Second header, described second header and described first header be arranged in parallel, and be separated into multiple sub-chamber by multiple partition component in described second header, described multiple sub-chamber is by being formed in the channel connection on described partition component;
Multiple flat tube, described multiple flat tube to be connected to abreast between described first header and described second header and to be communicated with described second header with described first header respectively;
Allocation component, described allocation component comprises the distributor disk with distribution cavity and the entrance pipe be communicated with described distribution cavity respectively and at least one export pipeline, described entrance pipe is communicated with the sub-chamber being positioned at bottom in described multiple sub-chamber, and at least one export pipeline described is communicated with sub-chamber described in all the other respectively.
2. parallel-flow heat exchanger according to claim 1, is characterized in that, the described partition component and described first dividing plate that are positioned at bottom in described multiple partition component are positioned on same level height.
3. parallel-flow heat exchanger according to claim 1, is characterized in that, described partition component comprises three, and is separated into four sub-chamber by described second header, and the export pipeline of described allocation component is three.
4. the parallel-flow heat exchanger according to any one of claim 1-3, is characterized in that, described partition component is second partition, and wherein said passage is be formed in the bulkhead through-hole on described second partition.
5. the parallel-flow heat exchanger according to any one of claim 1-3, is characterized in that, described partition component is device in one-way on state, and described device in one-way on state is configured to one-way conduction from top to bottom.
6. parallel-flow heat exchanger according to claim 5, is characterized in that, each described device in one-way on state comprises:
Be adapted to fit in the cylindrical shell in described second header, the open at its lower end of described cylindrical shell and upper end has apical pore;
Partition, described partition is located in described cylindrical shell movably, described partition be configured to when it and fit in described cylindrical shell upper end time shutoff described in apical pore and the liquid be positioned at when it departs from described cylindrical shell upper end above described partition discharges described cylindrical shell downwards by it.
7. parallel-flow heat exchanger according to claim 6, is characterized in that, described partition has multiple partition hole running through it, the projection of described apical pore on described partition and described multiple partition hole all spaced apart.
8. parallel-flow heat exchanger according to claim 7, is characterized in that, the edge of the contiguous described partition in described multiple partition hole arranges and is uniformly distributed circumferentially.
9. parallel-flow heat exchanger according to claim 8, is characterized in that, described partition hole is four.
10. parallel-flow heat exchanger according to claim 6, is characterized in that, the edge of described partition has at least one groove inwardly concaved.
11. parallel-flow heat exchangers according to claim 10, is characterized in that, described groove type becomes square groove, dovetail groove or deep-slotted chip breaker.
12. parallel-flow heat exchangers according to claim 10, is characterized in that, described groove is 3-8.
13. parallel-flow heat exchangers according to claim 6, is characterized in that, the height of described cylindrical shell is less than 30mm.
14. parallel-flow heat exchangers according to claim 5, is characterized in that, each described device in one-way on state comprises:
Be adapted to fit in the body in described second header, described body is formed as tabular, described body has the body apertures running through it;
Shut, described shut is connected on the lower surface of described body, and open between the open position of described body apertures and the closed position closing described body apertures movable.
15. parallel-flow heat exchangers according to claim 14, is characterized in that, described shut is connected on the lower surface of described body pivotly.
16. parallel-flow heat exchangers according to claim 15, it is characterized in that, the lower surface of described body has the first recess to being recessed on, wherein said body apertures is formed in described first recess place, and described shut is connected on the sidewall of described first recess pivotly.
17. parallel-flow heat exchangers according to claim 16, is characterized in that, when described shut closes described body apertures, the lower surface of described shut is concordant with the lower surface of described body.
18. parallel-flow heat exchangers according to claim 15, is characterized in that, described first recess is formed as rectangular area.
19. parallel-flow heat exchangers according to claim 14, it is characterized in that, the lower surface of described body has the second recess to being recessed on, wherein said body apertures is formed in described second recess place, described shut is the flexible arc plate being formed as protruding downwards, and oppositely protrudes towards described second recess when described shut is configured to the power be subject to upwards and close described body apertures.
20. parallel-flow heat exchangers according to claim 18, is characterized in that, the end face of described second recess is formed as arcuate shape.
21. parallel-flow heat exchangers according to claim 20, is characterized in that, the projection on the body of described second recess is formed as rectangle.
22. 1 kinds of air-conditioners, is characterized in that, comprise the parallel-flow heat exchanger according to any one of claim 1-21.
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| CN201410342901.9A CN105318605B (en) | 2014-07-17 | 2014-07-17 | Parallel-flow heat exchanger and the air conditioner with the parallel-flow heat exchanger |
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| CN201410342901.9A CN105318605B (en) | 2014-07-17 | 2014-07-17 | Parallel-flow heat exchanger and the air conditioner with the parallel-flow heat exchanger |
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| CN105318605B CN105318605B (en) | 2018-02-02 |
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| CN106196743A (en) * | 2016-08-17 | 2016-12-07 | 广东美的制冷设备有限公司 | The parallel-flow evaporator of domestic indoor unit of wall hanging type air conditioner and air-conditioner |
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| CN114777361A (en) * | 2022-04-22 | 2022-07-22 | 广东欧科空调制冷有限公司 | Automatic adjusting type uniform distribution device |
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| CN105318605B (en) | 2018-02-02 |
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