CN104019582A - Parallel flow heat exchanger - Google Patents
Parallel flow heat exchanger Download PDFInfo
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- CN104019582A CN104019582A CN201310063365.4A CN201310063365A CN104019582A CN 104019582 A CN104019582 A CN 104019582A CN 201310063365 A CN201310063365 A CN 201310063365A CN 104019582 A CN104019582 A CN 104019582A
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Abstract
The invention discloses a parallel flow heat exchanger. The parallel flow heat exchanger comprises collecting pipes positioned at the two ends, and flat pipes communicated with the corresponding collecting pipes, wherein the collecting pipes comprise first collecting pipes and second collecting pipes close to each other, and third collecting pipes and fourth collecting pipes close to each other; the first collecting pipes and the second collecting pipes are fixed together through first base plates arranged therebetween and provided with waist portions; the two ends of the first base plates are thick, the middles of the first base plates are thick, and first concave surfaces and second concave surfaces forming the waist portions are arranged at the two sides of the first base plates; and the first collecting pipes and the second collecting pipes are respectively provided with first fitting surfaces and second fitting surfaces, which are correspondingly bonded with the first concave surfaces and the second concave surfaces. The parallel flow heat exchanger has the following benefits: the first base plates having the waist portions can increase the contact areas with the first collecting pipes and the second collecting pipes; and the better positioning effect is achieved.
Description
Technical field
The present invention relates to a kind of parallel-flow heat exchanger, belong to heat exchanger of automobile air-conditioner field.
Background technology
In recent decades, air conditioning for automobiles has obtained developing rapidly, accounts for the second of air-conditioning machinery.Heat exchanger, as one of four chief components of air conditioning for automobiles, also needs to improve and optimizate design according to the requirement of aspect, market.Because parallel-flow heat exchanger has the features such as refrigerating efficiency is high, volume is little, lightweight, can be good at meeting the requirement in market, be applied in automotive air-conditioning system gradually in recent years.
Parallel-flow heat exchanger be by the cold-producing medium single channel turnover of tube-strip heat exchanger or two-way also, the form of series connection turnover changes into the form of double-deck multipaths turnover.It is mainly comprised of micro-channel flat, radiating fin and header.At the two ends of micro-channel flat, described header is set, for distributing and collect cold-producing medium.Between adjacent micro-channel flat, be provided with undulatory or with the radiating fin of shutter shape, in order to the heat exchange efficiency of enhanced heat exchange device and air side.Inside at header is provided with dividing plate, all micro-channel flat can be divided into several flow processs, and the flat tube number of each flow process of reasonable distribution, to obtain best parallel-flow heat exchanger heat exchange efficiency.
Due to the double-deck multipaths turnover structure of parallel-flow heat exchanger, the header at two ends has two runners that can mutually circulate, wherein each runner corresponding the flat tube of one deck.In order to improve the heat exchange efficiency of parallel-flow heat exchanger, can in the middle of two runners of current collector, insert the central dividing plate with punching.
The header of parallel-flow heat exchanger is to be made from multiple components, and needs multi-step process, as punching, crimp and welding etc.For flat tube and radiating fin, in the middle of the manufacture and use procedure of parallel-flow heat exchanger, header is just more prone to go wrong, as leakage, rosin joint and distortion etc., so in order to guarantee weldability and the availability of parallel-flow heat exchanger, reasonable, feasible collecting pipe structure is designed to for one of emphasis of research and development at present.
The header of existing parallel-flow heat exchanger comprises a variety of shapes, such as tubular, D shape etc.Wherein, the voltage endurance capability of the non-tubular headers such as D shape is limited, cannot bear very high operating pressure, and when making condenser, this header may produce deformation in running, affects its exchange capability of heat.In addition, how guaranteeing the location of tubular header in welding process, to guarantee soldering reliability, is also the ubiquitous technical barrier of industry.
Summary of the invention
The parallel-flow heat exchanger that the object of the present invention is to provide a kind of the first backing plate to position header preferably.
For achieving the above object, the present invention adopts following technical scheme: a kind of parallel-flow heat exchanger, it comprises the header that is positioned at two ends and the flat tube that is communicated with corresponding header, described header comprises close the first header and the second header mutually, and mutual close the 3rd header and the 4th header, described the first header and the second header are positioned at one end of flat tube, described the 3rd header and the 4th header are positioned at the other end of flat tube, described the first header and the second header are by being arranged between them, first backing plate with waist is fixed with each other, the two ends of described the first backing plate are thick, intermediate thin, and the both sides of described the first backing plate are provided with the first concave surface and the second concave surface that forms described waist, described the first header and the second header are respectively equipped with the first mating surface and the second mating surface that correspondence fits in described the first concave surface and the second concave surface.
As further improved technical scheme of the present invention, described the first header and the second header are tubular, and described the first concave surface and the second concave surface are arc-shaped concave, and described the first mating surface and the second mating surface are arc convex.
As further improved technical scheme of the present invention, described the first header is provided with some first-class through holes, and described the second header is provided with some second through holes, and described the first backing plate is provided with the perforation that is communicated with first-class through hole and second through hole.
As further improved technical scheme of the present invention, described the first backing plate covers all first-class through holes and all second through holes continuously.
As further improved technical scheme of the present invention, described parallel-flow heat exchanger is also provided with the second backing plate between described the first header and the second header, described the second backing plate is equally in order to fixing described the first header and the second header, described the second backing plate is identical with the shape of the first backing plate, and described the first backing plate and the second backing plate interval arrange.
As further improved technical scheme of the present invention, described the 3rd header and the 4th header are fixed with each other by being arranged on the 3rd backing plate between them, that have waist, the two ends of described the 3rd backing plate are thick, intermediate thin, and the both sides of described the 3rd backing plate are provided with the 3rd concave surface and the 4th concave surface that forms described waist, and described the 3rd header and the 4th header are respectively equipped with the 3rd mating surface and the 4th mating surface that correspondence fits in described the 3rd concave surface and the 4th concave surface.
As further improved technical scheme of the present invention, described parallel-flow heat exchanger is also provided with the 4th backing plate between described the 3rd header and the 4th header, described the 4th backing plate is equally in order to fixing described the 3rd header and the 4th header, described the 4th backing plate is identical with the shape of the 3rd backing plate, and described the 3rd backing plate and the 4th backing plate interval arrange.
As further improved technical scheme of the present invention, described the 3rd header and the 4th header are tubular, and described the 3rd concave surface and the 4th concave surface are arc-shaped concave, and described the 3rd mating surface and the 4th mating surface are arc convex.
As further improved technical scheme of the present invention, described the first header, the second header, the 3rd header and the 4th header are equipped with the some punchings that are communicated with described flat tube.
As further improved technical scheme of the present invention, described the first header, the second header, the 3rd header and the 4th header are equipped with the first different arc section of radius and the second arc section, the radius of wherein said the second arc section is greater than described the first arc section, and described punching is arranged at described the second arc section.
Compared with prior art, the present invention realizes being fixedly connected with of the first header and the second header indirectly by the first backing plate is set; In addition, in the both sides of the first backing plate, be provided with and form the first concave surface of waist and the second concave surface to fit in described the first header and the second header, so arrange, can increase the contact area of the first header, the second header and described the first backing plate, there is good locating effect.
Accompanying drawing explanation
Fig. 1 is the stereogram of parallel-flow heat exchanger of the present invention in the first embodiment.
Fig. 2 is the stereogram of another angle of Fig. 1.
Fig. 3 is the front view of Fig. 1.
Fig. 4 is the front view of Fig. 2.
Fig. 5 is the stereogram of the second header in Fig. 1.
Fig. 6 stereogram when fixed with each other that is the first header in Fig. 1 and the second header by the first backing plate and the second backing plate.
Fig. 7 is the stereogram of the first backing plate in Fig. 1.
Fig. 8 is the stereogram of the second backing plate in Fig. 1.
Fig. 9 is the cutaway view along A-A line in Fig. 1.
Figure 10 is the partial enlarged drawing of picture frame part in Fig. 9.
Figure 11 is the stereogram of parallel-flow heat exchanger of the present invention second header in the second embodiment.
Figure 12 is the axial view of the first header in Figure 11.
Figure 13 stereogram when fixed with each other that is the first header in Figure 11 and the second header by the first backing plate and the second backing plate.
The specific embodiment
Shown in please refer to the drawing 1 and Fig. 2, the present invention has disclosed a kind of parallel-flow heat exchanger 100, it comprise import 10, outlet 20, the header at two ends, be communicated with the flat tube 5 of corresponding header and between described flat tube 5 to play the radiating fin 6 of enhanced heat exchange efficiency.Described parallel-flow heat exchanger 100 can be applied on air conditioning for automobiles, and can be evaporimeter or condenser according to the difference of using.Described header comprises the first mutually close header 1 and the second header 2 and mutual close the 3rd header 3 and the 4th header 4.Described the first header 1 and the second header 2 are positioned at one end of flat tube 5 (under the installation situation of parallel-flow heat exchanger 100 of the present invention, for upper end), described the 3rd header 3 and the 4th header 4 are positioned at the other end (under the installation situation of parallel-flow heat exchanger 100 of the present invention, being lower end) of flat tube 5.It should be noted that, parallel-flow heat exchanger 100 of the present invention is not the position under its desirable installation situation in the position shown in Fig. 1 and Fig. 2, position shown in Fig. 1 and Fig. 2 is in order better to describe the matching relationship and position relationship (detailed description after a while) between each element of the present invention, and the desirable installation site of the present invention be the first header 1 and the second header 2 upper, the 3rd header 3 and the 4th header 4 under.
Described import 10 and outlet 20 are communicated with corresponding header, and described the first header 1 is with in the second header 2, one of them is communicated with described import 10, and another is communicated with described outlet 20.In illustrative embodiments of the present invention, described import 10 is communicated with the first header 1, and described outlet 20 is communicated with the second header 2.Certainly, be understandable that: aperture position and the connection corresponding to which header of described import 10 and outlet 20 all can arrange as required flexibly, and are not limited to illustrative embodiments of the present invention.
Shown in please refer to the drawing 1 to Fig. 5, in the first embodiment of the present invention, described the first header 1, the second header 2, the 3rd header 3 and the 4th header 4 are tubular.The advantage of this design is: compared to non-tubular header, the voltage endurance capability of tubular header is better, can bear higher operating pressure, and when making condenser, tubular header is difficult for producing deformation in running, and exchange capability of heat is better.Described the first header 1, the second header 2, the 3rd header 3 and the 4th header 4 are equipped with the some punchings 200 that are communicated with described flat tube 5.Insert respectively in described punching 200 at the two ends of described flat tube 5, and then realize and being communicated with corresponding header.In addition, described the first header 1, the second header 2, the 3rd header 3 and the 4th header 4 are also provided with dividing plate 29, be used for the flat tube of microchannel 5 to be divided into several flow processs, and the flat tube quantity of each flow process of reasonable distribution.Particularly, described the first header 1 is separated into the first circulation section 11 and the second circulation section 12 by dividing plate 29; Described the second header 2 is separated into the 3rd circulation section the 21 and the 4th circulation section 22 by dividing plate 29; Described the 3rd header 3 is separated into the 5th circulation section the 31 and the 6th circulation section 32 by dividing plate 29; Described the 4th header 4 is separated into the 7th circulation section the 41 and the 8th circulation section 42 by dividing plate 29.Wherein, the dividing plate 29 being arranged in the first header 1 and the second header 2 is imperforate plate, and the dividing plate 29 being arranged in the 3rd header 3 and the 4th header 4 is abacus.
Shown in please refer to the drawing 5 and Figure 10, the 4th circulation section 22 of described the second header 2 is provided with some second through holes 221, and described second through hole 221 is towards the second circulation section 12 of the first header 1.Similarly, second of described the first header 1 the circulation section 12 some first-class through holes 121 that are also provided with towards second through hole 221.
Shown in please refer to the drawing 3 and Fig. 4, described the first header 1 and the second header 2 are fixed with each other, but are formed with described the first header 1 and the second header 2 the first space 13 spaced apart from each other between described the first header 1 and the second header 2.Similarly, described the 3rd header 3 and the 4th header 4 are fixed with each other, but are also formed with described the 3rd header 3 and the 4th header 4 Second gap 23 spaced apart from each other between described the 3rd header 3 and the 4th header 4.As for the fixed form between the first header 1 and the second header 2, include but not limited to backing plate connection, side plate connection etc.
Shown in please refer to the drawing 6 to Figure 10, in illustrative embodiments of the present invention, what the fixed form of header adopted is that backing plate connects, and below should partly be described in detail.Described backing plate comprises the first backing plate 71 and the second backing plate 72 being arranged between described the first header 1 and the second header 2 and is arranged on the 3rd backing plate 73 and the 4th backing plate 74 between described the 3rd header 3 and the 4th header 4, and wherein the first backing plate 71 connects the 4th circulation section 22 of second circulation section the 12 and second header 2 of the first headers 1; The second backing plate 72 connects the 3rd circulation section 21 of first circulation section the 11 and second header 2 of the first header 1; The 3rd backing plate 73 connects the 8th circulation section 42 of the 6th circulation section the 32 and the 4th header 4 of the 3rd header 3; The 4th backing plate 74 connects the 7th circulation section 41 of the 5th circulation section the 31 and the 4th header 4 of the 3rd header 3.
Described the first space 13 is owing to this first backing plate 71 being set and/or this second backing plate 72 forms, and described the first space 13 has part at least between this first backing plate 71 and this second backing plate 72.Described Second gap 23 is owing to the 3rd backing plate 73 being set and/or the 4th backing plate 74 forms, and described Second gap 23 has part at least between the 3rd backing plate 73 and the 4th backing plate 74.Certainly, number and the length of the first space 13 and Second gap 23 are not limit, and can set as required.
Shown in please refer to the drawing 7 and Figure 10, described the first backing plate 71 is for strip and have waist, and described the first backing plate 71 two ends are thick, intermediate thin (in the position shown in Fig. 7 be upper and lower side is thick, intermediate thin).Described the first backing plate 71 is provided with the first concave surface 711 and the second concave surface 712 that forms described waist, and described the first header 1 and the second header 2 are respectively equipped with the first mating surface 14 and the second mating surface 24 that correspondence fits in described the first concave surface 711 and the second concave surface 712.So arrange, first backing plate 71 on the one hand with waist can play good positioning function, is difficult for dropping; Between first, second concave surface 711,712 and first, second header 1,2, possess larger contact area on the other hand, thereby can realize preferably, be fixedly connected with.Preferably, described the first concave surface 711 and the second concave surface 712 are arc-shaped concave, and described the first mating surface 14 and the second mating surface 24 are arc convex, can realize like this larger area contact, are more conducive to location, fixing, welding.In addition, described the first backing plate 71 is provided with the perforation 713 that is communicated with first-class through hole 121 and second through hole 221, and the shape of described perforation 713 and quantity can be set as required.Described the first backing plate 71 covers all first-class through holes 121 and all second through holes 221 continuously, it should be noted that: " covering " here refers to that the first backing plate 71 occupies the region of first-class through hole 121 and second through hole 221, but in fact first-class through hole 121 is with second through hole 221 or by 713 (the repeating no more) that are interconnected of boring a hole herein.In other words, although be provided with the first backing plate 71 between first, second header 1,2, by boring a hole, 713 still can make fluid (for example cold-producing medium) flow in the second, the 4th circulation section 12,22 of first, second header 1,2.Certainly, the quantity of the first backing plate 71, length and relative position also can be adjusted as required.
Shown in please refer to the drawing 8, the shape of described the second backing plate 72 and the first backing plate 71 is identical and arrange with the first backing plate 71 intervals.Described the second backing plate 72 also has waist, its two ends are thick, intermediate thin, and described the second backing plate 72 is also provided with the first concave surface 721 and the second concave surface 722 that forms described waist, and described the first header 1 and the second header 2 are respectively equipped with the first mating surface 14 and the second mating surface 24 that correspondence fits in described the first concave surface 721 and the second concave surface 722.But in illustrative embodiments of the present invention, the length of described the second backing plate 72 is less than the first backing plate 71, and described the second backing plate 72 does not arrange any perforation.
Described the 3rd backing plate 73 and the 4th backing plate 74 intervals arrange, and the shape of described the 3rd backing plate 73 and the 4th backing plate 74 is all identical with described the second backing plate 72.Described the 3rd backing plate 73 has waist, its two ends are thick, intermediate thin, and described the 3rd backing plate 73 is provided with the 3rd concave surface and the 4th concave surface (not shown) that forms described waist, and described the 3rd header 3 and the 4th header 4 are respectively equipped with the 3rd mating surface and the 4th mating surface (not shown) that correspondence fits in described the 3rd concave surface and the 4th concave surface.Preferably, described the 3rd concave surface and the 4th concave surface are arc-shaped concave, and described the 3rd mating surface and the 4th mating surface are arc convex, can realize like this larger area contact, are more conducive to location, fixing, welding.Certainly, quantity, length and the relative position of the second backing plate 72, the 3rd backing plate 73 and the 4th backing plate 74 also can be adjusted as required.
By the first backing plate 71, the second backing plate 72, the 3rd backing plate 73 and the 4th backing plate 74 of above structure are set, can realize the location of corresponding header, fixing, welding.Particularly, at header of the present invention, be under the situation of tubular, also can realize being cleverly fixedly connected with of corresponding header, and can strengthen the intensity of parallel-flow heat exchanger 100 of the present invention.
Shown in please refer to the drawing 1 and Fig. 2, below the fluid flow path of parallel-flow heat exchanger 100 of the present invention is described.First, fluid flow in parallel-flow heat exchanger 100 from import 10, and in the interior circulation of the first circulation section 11; Then, this fluid is subject to being arranged on the obstruction of the dividing plate 29 in the first header 1, just along flat tube 5, flows to the 5th circulation section 31 of the 3rd header 3; Because the dividing plate 29 being arranged in the 3rd header 3 is abacuses, this fluid can flow to the 6th circulation section 32 subsequently; And then along flat tube 5, flow to the second circulation section 12 of the first header 1; Because described the second circulation section 12 is communicated with the 4th circulation section 22 of the second header 2, this fluid is directly passed to the 4th circulation section 22 subsequently; Then, this fluid is subject to being arranged on the obstruction of the dividing plate 29 in the second header 2, just along flat tube 5, flows to the 8th circulation section 42 of the 4th header 4; Because the dividing plate 29 being arranged in the 4th header 4 is abacuses, this fluid can flow to the 7th circulation section 41 subsequently; And then along flat tube 5, flow to the 3rd circulation section 21 of the second header 2; Finally, from exporting 20 outflows, complete whole heat transfer process.
Can find from the above description, fluid is always in heat exchange in parallel-flow heat exchanger 100 of the present invention, so the temperature of the fluid in each header is different.In illustrative embodiments of the present invention, the first header 1 with the second header 2 because they one be connected with import 10, one is connected with outlet, so the temperature difference of their internal flows maximum.The internal flow temperature of the 3rd header 3 and the 4th header 4 also there are differences.Existing parallel-flow heat exchanger is because adjacent header is together integral braze-welded, contact area is each other larger, therefore internal fluid heat exchange is also larger, but this inner heat exchange should be lowered, otherwise can affect the heat exchange efficiency of parallel-flow heat exchanger.
Unlike the prior art, the present invention separates certain distance by the first header 1 and the second header 2 by the first space 13, thereby has reduced the heat exchange of internal fluid, has improved the heat exchange efficiency of parallel-flow heat exchanger 100.In addition, the present invention also separates certain distance by the 3rd header 3 and the 4th header 4 by Second gap 23, thereby has further reduced the heat exchange of internal fluid, has improved the heat exchange efficiency of parallel-flow heat exchanger 100.
In addition, when parallel-flow heat exchanger 100 is installed, described the first header 1 and the second header 2 are conventionally up, described the 3rd header 3 and the 4th header 4 conventionally below, when this parallel-flow heat exchanger 100 is used as evaporimeter, the condensed water producing can discharge timely by Second gap 23 (being that Second gap 23 is as drainage channel), thereby solved that condensed water in prior art is accumulated in the bottom of parallel-flow heat exchanger 100 and the problem that affects heat exchange efficiency.When parallel-flow heat exchanger 100 is oppositely installed, described the first header 1 and the second header 2 below, up, now described the first space 13 is just as drainage channel for described the 3rd header 3 and the 4th header 4.In a word, the first space 13 and the Second gap 23 of the present invention's design, can reduce the inside heat exchange of fluid on the one hand, improves heat exchange efficiency; On the other hand, described the first space 13 and/or Second gap 23 can also be as drainage channels.
Shown in please refer to the drawing 11 to Figure 13, the second embodiment of parallel-flow heat exchanger 100 of the present invention is that from the difference of the first embodiment the shape of header is different.In the second embodiment, the first header 1, the second header 2, the 3rd header 3 and the 4th header 4 are non-tubular, and it is equipped with the first different arc section 15 of radius and the second arc section 16, the radius of wherein said the second arc section 16 is greater than described the first arc section 15, and described punching 200 is arranged at described the second arc section 16.Now, the first concave surface 711,721 of described first, second backing plate 71,72 and the second concave surface 712,722 outer surface of first, second header 1,2 of can fitting equally.
It should be noted that: above embodiment is only for illustrating the present invention and unrestricted technical scheme described in the invention, above about " on ", the description in the orientation such as D score, " left side ", " right side " is just for the ease of understanding content of the present invention, limitation of the invention not.Although this description has been described in detail the present invention with reference to the above embodiments, but, those of ordinary skill in the art is to be understood that, person of ordinary skill in the field still can modify or be equal to replacement the present invention, and all do not depart from technical scheme and the improvement thereof of the spirit and scope of the present invention, all should be encompassed within the scope of claim of the present invention.
Claims (10)
1. a parallel-flow heat exchanger, it comprises the header that is positioned at two ends and the flat tube that is communicated with corresponding header, described header comprises close the first header and the second header mutually, and mutual close the 3rd header and the 4th header, described the first header and the second header are positioned at one end of flat tube, described the 3rd header and the 4th header are positioned at the other end of flat tube, it is characterized in that: described the first header and the second header are by being arranged between them, first backing plate with waist is fixed with each other, the two ends of described the first backing plate are thick, intermediate thin, and the both sides of described the first backing plate are provided with the first concave surface and the second concave surface that forms described waist, described the first header and the second header are respectively equipped with the first mating surface and the second mating surface that correspondence fits in described the first concave surface and the second concave surface.
2. parallel-flow heat exchanger as claimed in claim 1, is characterized in that: described the first header and the second header are tubular, and described the first concave surface and the second concave surface are arc-shaped concave, and described the first mating surface and the second mating surface are arc convex.
3. parallel-flow heat exchanger as claimed in claim 1, it is characterized in that: described the first header is provided with some first-class through holes, described the second header is provided with some second through holes, and described the first backing plate is provided with the perforation that is communicated with first-class through hole and second through hole.
4. parallel-flow heat exchanger as claimed in claim 3, is characterized in that: described the first backing plate covers all first-class through holes and all second through holes continuously.
5. parallel-flow heat exchanger as claimed in claim 2, it is characterized in that: described parallel-flow heat exchanger is also provided with the second backing plate between described the first header and the second header, described the second backing plate is equally in order to fixing described the first header and the second header, described the second backing plate is identical with the shape of the first backing plate, and described the first backing plate and the second backing plate interval arrange.
6. parallel-flow heat exchanger as claimed in claim 1, it is characterized in that: described the 3rd header and the 4th header are fixed with each other by being arranged on the 3rd backing plate between them, that have waist, the two ends of described the 3rd backing plate are thick, intermediate thin, and the both sides of described the 3rd backing plate are provided with the 3rd concave surface and the 4th concave surface that forms described waist, and described the 3rd header and the 4th header are respectively equipped with the 3rd mating surface and the 4th mating surface that correspondence fits in described the 3rd concave surface and the 4th concave surface.
7. parallel-flow heat exchanger as claimed in claim 6, it is characterized in that: described parallel-flow heat exchanger is also provided with the 4th backing plate between described the 3rd header and the 4th header, described the 4th backing plate is equally in order to fixing described the 3rd header and the 4th header, described the 4th backing plate is identical with the shape of the 3rd backing plate, and described the 3rd backing plate and the 4th backing plate interval arrange.
8. parallel-flow heat exchanger as claimed in claim 6, is characterized in that: described the 3rd header and the 4th header are tubular, and described the 3rd concave surface and the 4th concave surface are arc-shaped concave, and described the 3rd mating surface and the 4th mating surface are arc convex.
9. parallel-flow heat exchanger as claimed in claim 1, is characterized in that: described the first header, the second header, the 3rd header and the 4th header are equipped with the some punchings that are communicated with described flat tube.
10. parallel-flow heat exchanger as claimed in claim 9, it is characterized in that: described the first header, the second header, the 3rd header and the 4th header are equipped with the first different arc section of radius and the second arc section, the radius of wherein said the second arc section is greater than described the first arc section, and described punching is arranged at described the second arc section.
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| CN201310063365.4A CN104019582A (en) | 2013-02-28 | 2013-02-28 | Parallel flow heat exchanger |
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| CN201310063365.4A CN104019582A (en) | 2013-02-28 | 2013-02-28 | Parallel flow heat exchanger |
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| CN105650391A (en) * | 2014-11-25 | 2016-06-08 | 航天长征化学工程股份有限公司 | Elbow and machining method |
| CN105650391B (en) * | 2014-11-25 | 2018-04-17 | 航天长征化学工程股份有限公司 | Elbow and machining method |
| CN108981431A (en) * | 2018-09-26 | 2018-12-11 | 上海加冷松芝汽车空调股份有限公司 | A kind of liquid collecting tube assembly and heat exchanger |
| CN110228348A (en) * | 2019-06-11 | 2019-09-13 | 上海加冷松芝汽车空调股份有限公司 | A kind of heat exchanger and automotive air-conditioning system |
| CN112304125A (en) * | 2019-08-01 | 2021-02-02 | 杭州三花研究院有限公司 | Heat exchanger |
| WO2023231763A1 (en) * | 2022-05-31 | 2023-12-07 | 浙江三花智能控制股份有限公司 | Heat exchanger |
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| ASS | Succession or assignment of patent right |
Owner name: HANGZHOU SANHUA MICRO CHANNEL HEAT EXCHANGER CO., Free format text: FORMER OWNER: HANGZHOU SANHUA RESEARCH INSTITUTE CO., LTD. Effective date: 20141211 |
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| C41 | Transfer of patent application or patent right or utility model | ||
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Effective date of registration: 20141211 Address after: 310018 No. 289-1, No. 12, Hangzhou economic and Technological Development Zone, Zhejiang Applicant after: Sanhua Micro Channel Heat Exchanger Inc. Address before: 310018 289-2, Hangzhou Economic Development Zone, Zhejiang, No. 12 Applicant before: Hangzhou Sanhua Institute Co., Ltd. |
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Application publication date: 20140903 |
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