CN112629307A - Interpolation injection pipe subassembly and microchannel heat exchanger - Google Patents
Interpolation injection pipe subassembly and microchannel heat exchanger Download PDFInfo
- Publication number
- CN112629307A CN112629307A CN202110009804.8A CN202110009804A CN112629307A CN 112629307 A CN112629307 A CN 112629307A CN 202110009804 A CN202110009804 A CN 202110009804A CN 112629307 A CN112629307 A CN 112629307A
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- China
- Prior art keywords
- pipe
- adapter
- branch pipe
- jet
- heat exchanger
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/02—Header boxes; End plates
- F28F9/026—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits
- F28F9/027—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits in the form of distribution pipes
Abstract
The invention discloses an inserted injection pipe assembly and a micro-channel heat exchanger, wherein the micro-channel heat exchanger comprises a liquid collecting branch pipe and an adapter arranged on the liquid collecting branch pipe; one end of the liquid collecting branch pipe is provided with an opening to form a feeding end, the other end of the liquid collecting branch pipe is provided with a jet hole to form a discharging end, and the adapter is arranged at the discharging end; the section of adapter with the axis of jet orifice sets up perpendicularly, the adapter includes connecting portion and locking portion, the discharge end of collection liquid branch pipe is worn to establish in the connecting portion, be equipped with the chucking opening that the indent set up in the locking portion, connecting portion with welded fastening between the collection liquid branch pipe. The micro-channel heat exchanger has good sealing performance, effectively avoids refrigerant leakage, and ensures the effective connection of the injection pipe and the collecting pipe, thereby improving the heat exchange performance and reliability of the micro-channel heat exchanger.
Description
Technical Field
The invention relates to a heat exchanger, in particular to an inner inserting injection pipe assembly and a micro-channel heat exchanger.
Background
The micro-channel heat exchanger is a novel efficient heat exchanger and has the advantages of high heat transfer efficiency, small volume, light weight, small filling amount and the like. When the microchannel heat exchanger is used as an evaporator, an inlet is generally in a gas-liquid two-phase state, a flow collecting pipe of the traditional microchannel heat exchanger is lack of a flow dividing measure, and the gas-liquid two-phase layering phenomenon is obvious after the gas-liquid two-phase flow collecting pipe enters, so that the refrigerant entering the flat pipe is unevenly distributed, and the heat exchange performance of the heat exchanger is poor. The gas-liquid two-phase refrigerant in the vertical collecting pipe is uniformly distributed to form a micro-channel heat exchanger as the bottleneck of the development of the heat pump air conditioner.
In order to solve the above problems, the invention patent with application publication number CN103267390A specifically discloses a method for inserting an injection pipe to improve the problem of uneven distribution of refrigerant; however, the direction of the injection hole is not easy to control, and the injection effect of the refrigerant is influenced; in addition, the injection pipe in the method is directly connected with the collecting pipe, and the injection pipe is easy to loosen, so that the heat exchanger has poor sealing performance, the refrigerant is easy to leak, and the reliability of the heat exchanger is poor.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide an inserted jet pipe assembly which has good sealing performance, effectively avoids refrigerant leakage and ensures the effective connection of a jet pipe and a collecting pipe, thereby improving the heat exchange performance and reliability of a microchannel heat exchanger.
It is another object of the present invention to provide a microchannel heat exchanger.
The purpose of the invention is realized by the following technical scheme:
an inserted injection pipe assembly is characterized by comprising a liquid collecting branch pipe and an adapter arranged on the liquid collecting branch pipe; one end of the liquid collecting branch pipe is provided with an opening to form a feeding end, the other end of the liquid collecting branch pipe is provided with a jet hole to form a discharging end, and the adapter is arranged at the discharging end; the section of adapter with the axis of jet orifice sets up perpendicularly, the adapter includes connecting portion and locking portion, the discharge end of collection liquid branch pipe is worn to establish in the connecting portion, be equipped with the chucking opening that the indent set up in the locking portion, connecting portion with welded fastening between the collection liquid branch pipe.
The working principle of the internally-inserted injection pipe assembly is as follows:
when the inserted injection pipe assembly is installed, the discharge end of the liquid collecting branch pipe is aligned to a through hole in the side face of a collecting pipe in the micro-channel heat exchanger, and the discharge end of the inserted injection hole is inserted into the collecting pipe, so that the injection hole at the discharge end faces upwards; then, the locking part of the adapter is connected with the collecting pipe in a matching mode, the clamping opening in the locking part is correspondingly installed on the collecting pipe, and clamping connection with the collecting pipe is achieved through the locking part, so that the position of the whole liquid collecting branch pipe is ensured, and the sealing performance between the liquid collecting branch pipe and the collecting pipe is guaranteed.
In a preferred embodiment of the present invention, the locking portion of the adapter is disposed in an arc shape.
According to a preferable scheme of the invention, the connecting part of the adapter is provided with an installation groove with an opening, the liquid collecting branch pipe is provided with a connecting convex ring, and the connecting convex ring is correspondingly arranged in the installation groove.
Preferably, the bottom of the mounting groove of the connecting part and the connecting convex ring are provided with welding rings, and the bottom of the mounting groove and the connecting convex ring are fixed by welding the welding rings.
Preferably, the adapter, the welding ring and the liquid collecting branch pipe are all placed in a high-temperature brazing furnace, and the connection convex ring is tightly connected with the connecting part through melting of the welding ring.
According to a preferable scheme of the invention, the feeding end is provided with an expansion pipe section, and the inner diameter of the expansion pipe section is larger than that of the liquid collecting branch pipe.
In a preferred embodiment of the present invention, the diameter of the injection hole is 0.1 to 4 mm.
In a preferable scheme of the invention, the end part of the feeding end of the liquid collecting branch pipe is sealed, and the end part is sealed by rotating a ball cutter.
According to a preferable scheme of the invention, the adapter is provided with an injection mark, and the injection mark and the injection hole are both positioned on the same side of the adapter.
A micro-channel heat exchanger is characterized by comprising a collecting pipe, a gas collecting pipe, a flat pipe, a fin and a plurality of inserted jet pipe assemblies; the side of the collecting pipe is provided with a plurality of through holes, the through holes are matched with the outer diameter of the collecting branch pipe, and the plurality of internally-inserted jet pipe assemblies are installed on the through holes of the collecting pipe in a one-to-one correspondence mode.
Preferably, a plurality of spacers are arranged in the collecting pipe, the collecting pipe is divided into a plurality of feeding cavities by the plurality of spacers, and each feeding cavity corresponds to one through hole.
Compared with the prior art, the invention has the following beneficial effects:
1. the liquid collecting branch pipe is locked and fixed with the collecting pipe of the micro-channel heat exchanger through the adapter, so that the position of the liquid collecting branch pipe is favorably ensured, the sealing performance between the liquid collecting branch pipe and the collecting pipe is improved, the air tightness is good, and the leakage can be effectively avoided.
2. The liquid collecting branch pipe and the adapter are fixedly connected through welding, so that the stability is good, the control of the spraying direction of the refrigerant is facilitated, and the spraying effect of the refrigerant is improved.
3. The spray holes are arranged upwards, so that the refrigerant can be sprayed upwards vertically after entering the collecting pipe through the spray holes, and the refrigerant is prevented from being sprayed onto the flat pipe wall or the pipe wall of the collecting pipe.
Drawings
Fig. 1 to 3 are schematic structural views of an embodiment of an insertion injection pipe according to the present invention, in which fig. 1 is a perspective view, fig. 2 is an exploded view, and fig. 3 is a sectional view.
Fig. 4-5 are schematic structural views of one embodiment of the microchannel heat exchanger according to the present invention, wherein fig. 4 is a front view and fig. 5 is a partial sectional view.
Wherein the figures are numbered as follows:
1-liquid collecting branch pipe, 2-connecting part, 3-jet hole, 4-tube expanding section, 5-mark, 6-locking part, 7-mounting groove, 8-welding ring, 9-convex ring, 10-collecting pipe, 11-spacer, 12-fin, 13-gas collecting pipe, 14-feeding cavity and 15-flat pipe.
Detailed Description
The present invention will be further described with reference to the following examples and drawings, but the embodiments of the present invention are not limited thereto.
Example 1
Referring to fig. 1 to 3, the internal insertion spray tube assembly of the present embodiment includes a manifold 1 and an adapter provided on the manifold 1; one end of the liquid collecting branch pipe 1 is provided with an opening to form a feeding end, the other end of the liquid collecting branch pipe 1 is provided with a jet hole 3 to form a discharging end, and the adapter is arranged at the discharging end; the section of adapter with the axis of jet orifice 3 sets up perpendicularly, the adapter includes connecting portion 2 and locking portion 6, the discharge end of collection liquid branch pipe 1 wears to establish in connecting portion 2, be equipped with the chucking opening that the indent set up in the locking portion 6, connecting portion 2 with welded fastening between the collection liquid branch pipe 1.
Referring to fig. 1-3, the locking portion 6 of the adapter is arcuate. The arc-shaped locking part 6 is arranged, so that the collecting pipe 10 of the micro-channel heat exchanger can be conveniently clamped and connected.
Referring to fig. 1-3, a mounting groove 7 with an opening is formed in the connecting portion 2 of the adapter, a connecting convex ring 9 is arranged on the liquid collecting branch pipe 1, and the connecting convex ring 9 is correspondingly arranged in the mounting groove 7. Through mounting groove 7 and the setting of connecting bulge loop 9 to realize the installation location of adapter and collection liquid branch pipe 1, thereby improve the position accuracy between adapter and the collection liquid branch pipe 1, and then improve the leakproofness of collection liquid branch pipe 1 and pressure manifold 10.
Referring to fig. 1 to 3, a welding ring 8 is disposed between the bottom of the mounting groove 7 of the connecting portion 2 and the connecting convex ring 9, and the bottom of the mounting groove 7 and the connecting convex ring 9 are welded and fixed by the welding ring 8. Realize connecting portion 2 and the fixed connection who is connected the bulge loop 9 through welding ring 8 to realize the fixed connection of adapter and collection liquid branch pipe 1, and connect firmly, thereby be favorable to improving precision and leakproofness through after adapter and the installation of pressure manifold 10.
In this embodiment, all place adapter, weld ring 8 and collection liquid branch pipe 1 in the high temperature brazing furnace, realize through the melting of welding ring 8 connect the bulge loop 9 with the zonulae occludens of connecting portion 2. After the high-temperature processing of the high-temperature brazing furnace, the liquid collecting branch pipe 1 is matched with the adapter block more tightly, and the sealing performance and the reliability of the inserted injection pipe assembly are further enhanced.
Referring to fig. 1-3, the feeding end is provided with an expansion pipe section 4, and the inner diameter of the expansion pipe section 4 is larger than that of the liquid collecting branch pipe 1. Through the arrangement of the expansion pipe section 4, the liquid collecting branch pipe 1 is more conveniently and easily connected with a system pipeline, and the feeding of a refrigerant is realized.
In this embodiment, the diameter of the injection hole 3 is 0.1 to 4 mm.
Referring to fig. 1-3, the end of the feed end of the branch collecting pipe 1 is sealed by a ball cutter. The liquid collecting branch pipe 1 is arranged, so that the refrigerant in the liquid collecting branch pipe 1 can be sprayed out of the injection pipe, and the excessive refrigerant is prevented from remaining in the liquid collecting branch pipe 1; the end part of the feeding end is spherical through the rotary processing of the ball cutter, so that the assembling of the through hole on the collecting pipe 10 is more convenient.
Referring to fig. 1-3, the adapter is provided with an injection mark 5, and the injection mark 5 and the injection hole 3 are both located on the same side of the adapter. Through the setting of injection sign 5 to confirm the direction of injection hole 3 when installation collection liquid branch pipe 1, avoid the direction to adorn conversely, thereby avoid influencing the heat exchanger performance. In this embodiment, the injection mark 5 is a pit directly formed on the adapter, and the injection mark 5 has a simple structure and is easy to process and identify.
The inserted injection pipe assembly of the embodiment improves the injection effect of the refrigerant, reduces the problem that the refrigerant is easy to leak due to poor sealing caused by the direct connection of the inserted injection pipe and the collecting pipe 10, and improves the heat exchange performance and reliability of the micro-channel heat exchanger. The inserted injection pipe of the embodiment mainly comprises a switching block, a welding ring 8 and a liquid collecting branch pipe 1, all components are fixed through mutual clearance fit to ensure the direction control of the inserted injection hole 3, and the injection effect of the inserted injection pipe is favorably improved; meanwhile, due to the existence of the welding ring 8 in the inserted jet pipe assembly, the melting of the welding flux ensures the air tightness of the inserted jet pipe during the brazing process, and the reliability of the inserted jet pipe is improved.
Referring to fig. 1-5, the operation principle of the insertion nozzle pipe assembly of the present embodiment is:
when the inserted injection pipe assembly is installed, the discharge end of the liquid collecting branch pipe 1 is aligned to a through hole in the side face of a collecting pipe 10 in the micro-channel heat exchanger, and the discharge end of the inserted injection hole 3 is inserted into the collecting pipe 10, so that the injection hole 3 at the discharge end faces upwards; then with locking portion 6 and the pressure manifold 10 accordant connection of adapter, correspond the chucking opening in locking portion 6 and install on pressure manifold 10, realize being connected with the chucking of pressure manifold 10 through locking portion 6 to ensure the position of whole collection liquid branch pipe 1, be favorable to guaranteeing the leakproofness between collection liquid branch pipe 1 and the pressure manifold 10.
Example 2
Referring to fig. 1 to 5, the microchannel heat exchanger of the present embodiment is characterized by including a collecting pipe 10, a gas collecting pipe 13, a flat pipe 15, a fin 12, and a plurality of the above-mentioned inserted ejector pipe assemblies; the side of the collecting pipe 10 is provided with a plurality of through holes, the through holes are matched with the outer diameter of the collecting branch pipe 1, and the plurality of internally inserted jet pipe assemblies are installed on the through holes of the collecting pipe 10 in a one-to-one correspondence mode.
Referring to fig. 4-5, a plurality of spacers 11 are disposed in the header 10, and the plurality of spacers 11 divide the header 10 into a plurality of feeding cavities 14, and each feeding cavity 14 corresponds to one through hole.
Referring to fig. 4-5, when the microchannel heat exchanger of this embodiment is used as an evaporator, a gas-liquid two-phase refrigerant is divided into N paths, enters the header pipe 10 through the liquid collecting branch pipe 1 of the inserted injection pipe assembly, then enters the gas collecting pipe 13 through the flat pipe 15, and finally enters the system through the outlet of the gas collecting pipe 13, thereby completing evaporation heat exchange. When the microchannel heat exchanger is used as a condenser, a gas-phase refrigerant enters the gas collecting pipe 13 through the inlet of the gas collecting pipe 13, then enters the collecting pipe 10 through the flat pipe 15, and finally enters the system through the liquid collecting branch pipe 1 of the inserted injection pipe assembly to finish condensation heat exchange.
The present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents and are included in the scope of the present invention.
Claims (11)
1. An inserted injection pipe assembly is characterized by comprising a liquid collecting branch pipe and an adapter arranged on the liquid collecting branch pipe; one end of the liquid collecting branch pipe is provided with an opening to form a feeding end, the other end of the liquid collecting branch pipe is provided with a jet hole to form a discharging end, and the adapter is arranged at the discharging end; the section of adapter with the axis of jet orifice sets up perpendicularly, the adapter includes connecting portion and locking portion, the discharge end of collection liquid branch pipe is worn to establish in the connecting portion, be equipped with the chucking opening that the indent set up in the locking portion, connecting portion with welded fastening between the collection liquid branch pipe.
2. The pluggable jet nozzle assembly of claim 1, wherein the locking portion of the adapter is arcuately configured.
3. The internal insertion ejector tube assembly of claim 1, wherein the connection portion of the adapter is provided with an installation groove with an opening, and the liquid collecting branch tube is provided with a connection convex ring, and the connection convex ring is correspondingly arranged in the installation groove.
4. The inner insertion jet pipe assembly of claim 3, wherein a welding ring is disposed between the bottom of the mounting groove of the connecting portion and the connecting protruding ring, and the bottom of the mounting groove and the connecting protruding ring are welded and fixed by the welding ring.
5. The insert ejector tube assembly of claim 4, wherein the adapter, the weld ring, and the manifold are placed in a high temperature brazing furnace, and the tight connection of the attachment collar to the attachment portion is achieved by melting the weld ring.
6. The internal insertion jet tube assembly of claim 1, wherein the feed end is provided with an expansion tube section having an inner diameter greater than an inner diameter of the manifold.
7. The interpositioned jet tube assembly of claim 1, wherein the jet orifice has a diameter of 0.1-4 mm.
8. The internal insertion spout assembly of claim 1, wherein the end of the feed end of the manifold is sealed by a ball cutter rotational process.
9. The pluggable jet nozzle assembly of claim 1, wherein the adapter is provided with a jet identifier, and the jet identifier and the jet hole are located on the same side of the adapter.
10. A microchannel heat exchanger comprising a manifold, a header, a flat tube, a fin, and a plurality of the insert jet stack assemblies of any of claims 1-9; the side of the collecting pipe is provided with a plurality of through holes, the through holes are matched with the outer diameter of the collecting branch pipe, and the plurality of internally-inserted jet pipe assemblies are installed on the through holes of the collecting pipe in a one-to-one correspondence mode.
11. The microchannel heat exchanger of claim 10, wherein a plurality of spacers are disposed in the manifold, the plurality of spacers dividing the manifold into a plurality of feed cavities, one for each of the through-holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110009804.8A CN112629307A (en) | 2021-01-05 | 2021-01-05 | Interpolation injection pipe subassembly and microchannel heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110009804.8A CN112629307A (en) | 2021-01-05 | 2021-01-05 | Interpolation injection pipe subassembly and microchannel heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112629307A true CN112629307A (en) | 2021-04-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110009804.8A Pending CN112629307A (en) | 2021-01-05 | 2021-01-05 | Interpolation injection pipe subassembly and microchannel heat exchanger |
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| Country | Link |
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| CN (1) | CN112629307A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE908819C (en) * | 1951-03-20 | 1954-04-12 | Steinmueller Gmbh L & C | Weld and roll connection, especially for high pressure boiler tubes |
| US3064707A (en) * | 1959-09-30 | 1962-11-20 | Carrier Corp | Joining of tubular members |
| US4858964A (en) * | 1988-03-22 | 1989-08-22 | Usui Kokusai Sangyo Kaisha Ltd. | T-joint for connecting branch pipe |
| EP0622580A1 (en) * | 1993-04-29 | 1994-11-02 | Hutchinson | Pipe insert; its process of manufacturing and the tool device for carrying out this process |
| JPH1047578A (en) * | 1996-08-08 | 1998-02-20 | Mitsubishi Plastics Ind Ltd | Branch pipe joint |
| KR20100000013A (en) * | 2008-06-24 | 2010-01-06 | (주)파인텍 | The fitting for connecting branch pipe |
| CN202937937U (en) * | 2012-11-13 | 2013-05-15 | 上海德尔福汽车空调系统有限公司 | Novel connecting piece based on pipeline and press plate |
| CN104791558A (en) * | 2014-01-20 | 2015-07-22 | 马勒贝洱两合公司 | Pipe joint, especially for heat exchanger |
| CN105890233A (en) * | 2011-11-18 | 2016-08-24 | 美的集团股份有限公司 | Parallel flow heat exchanger |
| CN112082402A (en) * | 2020-09-28 | 2020-12-15 | 珠海格力电器股份有限公司 | Micro-channel heat exchanger and heat pump system |
-
2021
- 2021-01-05 CN CN202110009804.8A patent/CN112629307A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE908819C (en) * | 1951-03-20 | 1954-04-12 | Steinmueller Gmbh L & C | Weld and roll connection, especially for high pressure boiler tubes |
| US3064707A (en) * | 1959-09-30 | 1962-11-20 | Carrier Corp | Joining of tubular members |
| US4858964A (en) * | 1988-03-22 | 1989-08-22 | Usui Kokusai Sangyo Kaisha Ltd. | T-joint for connecting branch pipe |
| EP0622580A1 (en) * | 1993-04-29 | 1994-11-02 | Hutchinson | Pipe insert; its process of manufacturing and the tool device for carrying out this process |
| JPH1047578A (en) * | 1996-08-08 | 1998-02-20 | Mitsubishi Plastics Ind Ltd | Branch pipe joint |
| KR20100000013A (en) * | 2008-06-24 | 2010-01-06 | (주)파인텍 | The fitting for connecting branch pipe |
| CN105890233A (en) * | 2011-11-18 | 2016-08-24 | 美的集团股份有限公司 | Parallel flow heat exchanger |
| CN202937937U (en) * | 2012-11-13 | 2013-05-15 | 上海德尔福汽车空调系统有限公司 | Novel connecting piece based on pipeline and press plate |
| CN104791558A (en) * | 2014-01-20 | 2015-07-22 | 马勒贝洱两合公司 | Pipe joint, especially for heat exchanger |
| CN112082402A (en) * | 2020-09-28 | 2020-12-15 | 珠海格力电器股份有限公司 | Micro-channel heat exchanger and heat pump system |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210409 |
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| RJ01 | Rejection of invention patent application after publication |