CN111043881A - Plate heat exchanger with secondary distribution function - Google Patents
Plate heat exchanger with secondary distribution function Download PDFInfo
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- CN111043881A CN111043881A CN201911348619.0A CN201911348619A CN111043881A CN 111043881 A CN111043881 A CN 111043881A CN 201911348619 A CN201911348619 A CN 201911348619A CN 111043881 A CN111043881 A CN 111043881A
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- distribution pipe
- hole
- outer sleeve
- heat exchanger
- holes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D9/0031—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other
- F28D9/0037—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the conduits for the other heat-exchange medium also being formed by paired plates touching each other
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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
- F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
- F28F27/02—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus for controlling the distribution of heat-exchange media between different channels
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention relates to a plate heat exchanger with a secondary distribution function, which is formed by welding a plurality of plates, wherein two adjacent plates are directly fixed and sealed to form a medium channel, a distribution pipe is arranged in a through hole where a refrigerant inlet is positioned, the outer wall of the distribution pipe is provided with a row of distribution pipe through holes, the outer part of the distribution pipe is also provided with an outer sleeve, and the outer sleeve is provided with a row of outer sleeve through holes. According to the plate heat exchanger with the secondary distribution function, the distribution pipe and the outer sleeve are additionally arranged in the heat exchanger body, the freon gas in the distribution pipe flows into the outer sleeve after coming out of the distribution pipe through holes, and is distributed to each medium channel from the outer sleeve through holes after forming circulation in the outer sleeve, so that the gas distribution effect is better, and the heat exchange effect is improved. And the through holes on the distribution pipe and the outer sleeve are gradually enlarged from front to back, so that the Freon gas is uniformly distributed to the refrigerant channel, and the heat exchange effect of the heat exchanger is ensured.
Description
Technical Field
The invention relates to a plate heat exchanger with a secondary distribution function, and belongs to the technical field of heat exchangers.
Background
The Plate Type Heat Exchanger (Plate Type Heat Exchanger) is a high-efficiency Heat Exchanger formed by stacking a series of metal sheets, a thin rectangular channel is formed among various sheets, Heat exchange is carried out through the sheets, and the Plate Type Heat Exchanger is ideal equipment for carrying out Heat exchange on liquid-liquid and liquid-vapor and has the characteristics of high Heat exchange efficiency, small Heat loss, compact and light structure, small occupied area, convenience in installation and cleaning, wide application, long service life and the like. The air conditioner is a typical heat exchange device for liquid-vapor heat exchange, the core component of the air conditioner is a heat exchanger, and a Freon refrigerating device is adopted in the heat exchanger to provide a refrigerant for a plate type heat exchanger.
The principle of the plate heat exchanger lies in that cold side media enter a flow channel to exchange cold and heat with a hot side, the cold and heat media of each layer of flow channel are more uniform and represent better heat exchange effect, however, Freon gas can expand in the plate heat exchanger, which causes the flow of Freon gas in the heat exchanger plate of the front section and the heat exchanger plate gap of the rear section to be different, the Freon gas in the front part of the heat exchanger plate gap is more, the Freon gas in the rear part of the heat exchanger plate gap is less, thus refrigerant gas can not enter the gap between each plate uniformly, and the heat exchange effect of the heat exchanger is finally influenced. Because the density influence and the pressure difference influence of medium often only reach 70% efficiency, and 70% effect can waste a lot of product resources, customer's medium resource, space resource etc. if can improve 70% efficiency, can great improvement heat exchange efficiency promptly.
In addition, although some plate heat exchangers are provided with distributors, the conventional distributors cannot evenly distribute the freon gas to each medium channel, so that the heat exchange effect of the heat exchanger is poor.
Disclosure of Invention
The invention aims to overcome the defects and provide the plate heat exchanger with the secondary distribution function, which ensures that refrigerant gas uniformly enters a refrigerant channel and ensures the heat exchange effect of the heat exchanger.
The purpose of the invention is realized as follows:
a plate heat exchanger with secondary distribution function is formed by welding a plurality of plates, two adjacent plates are directly fixed and sealed to form a medium channel, two end plates are arranged at two ends of each plate, medium through holes are formed in the end plates and the plates, the medium through holes are multiple and respectively comprise a heat medium inlet, a heat medium outlet, a refrigerant inlet and a refrigerant outlet, a distribution pipe is arranged in the through hole where the refrigerant inlet is located, the distribution pipe penetrates through the refrigerant inlets of all the plates, the front end of the distribution pipe is welded with the front-side end plate, the distribution pipe is arranged in a hollow mode, the front end of the distribution pipe is communicated with the refrigerant inlet on the front-side end plate, a row of distribution pipe through holes are formed in the outer wall of the distribution pipe, the central connecting line of the distribution pipe through holes is parallel to the central axis of the distribution pipe, an outer sleeve is further arranged outside the distribution pipe, the outer sleeve, the outer sleeve is provided with a row of outer sleeve through holes, the central connecting line of the outer sleeve through holes is parallel to the central axis of the distribution pipe, the central connecting line of the outer sleeve through holes and the central connecting line of the distribution pipe through holes are 180-degree symmetrical about the central axis of the distribution pipe, each outer sleeve through hole is respectively communicated with each medium channel, after the freon gas in the distribution pipe comes out from the distribution pipe through holes, the freon gas is communicated into the outer sleeve, and after the freon gas forms circulation in the outer sleeve, the freon gas is distributed into each medium channel from the outer sleeve through holes.
The size of distribution pipe through-hole, overcoat pipe through-hole is inequality, and the distribution pipe through-hole on the distribution pipe to and the diameter of overcoat pipe through-hole on the outer tube increase from the front to back in proper order.
Compared with the prior art, the invention has the beneficial effects that:
according to the plate heat exchanger with the secondary distribution function, the distribution pipe and the outer sleeve are additionally arranged in the heat exchanger body, the freon gas in the distribution pipe flows into the outer sleeve after coming out of the distribution pipe through holes, and is distributed to each medium channel from the outer sleeve through holes after forming circulation in the outer sleeve, so that the gas distribution effect is better, and the heat exchange effect is improved. And the through holes on the distribution pipe and the outer sleeve are gradually enlarged from front to back, so that the Freon gas is uniformly distributed to the refrigerant channel, and the heat exchange effect of the heat exchanger is ensured.
After the Freon gas refrigerant enters the distribution pipe, the refrigerant can enter the through hole of the distribution pipe from the bottom of the pipeline firstly due to the pressure, and the aperture is gradually increased, so the refrigerant can be influenced by the resistance of the through hole of the distribution pipe and gradually enters from small holes which are slightly larger at the rear end, the refrigerant is uniformly fused in the distribution pipe for the first time, the refrigerant entering the second medium channel can be continuously fused and enter the third medium channel under the condition of being blocked again, but the refrigerant can be subjected to small holes which are arranged from small to large while entering, and the refrigerant can really form mixed flow at the moment, thereby the simultaneous entering state is really realized.
Drawings
Fig. 1 is a schematic structural diagram of a plate heat exchanger with a secondary distribution function according to the present invention.
Fig. 2 is a diagram showing the relationship between the distribution pipe, the outer sleeve and the plate in the plate heat exchanger having the secondary distribution function according to the present invention.
Wherein: the plate piece 1, the medium channel 1.1, the end plate 2, the medium through hole 3, the heat medium inlet 3.1, the heat medium outlet 3.2, the refrigerant inlet 3.3, the refrigerant outlet 3.4, the distribution pipe 4, the distribution pipe through hole 4.1, the outer sleeve 5 and the outer sleeve through hole 5.1.
Detailed Description
Referring to fig. 1 and 2, the invention relates to a plate heat exchanger with secondary distribution function, which is formed by welding a plurality of plates 1, two adjacent plates 1 are directly fixed and sealed to form a medium channel 1.1, two end plates 2 are arranged at two ends of the plates 1, medium through holes 3 are arranged on the end plates 2 and the plates 1, the plurality of medium through holes 3 are respectively a heat medium inlet 3.1, a heat medium outlet 3.2, a refrigerant inlet 3.3 and a refrigerant outlet 3.4, wherein a distribution pipe 4 is arranged in the through hole where the refrigerant inlet 3.3 is positioned, the refrigerant inlet 3.3 penetrating through all the plates 1 of the distribution pipe 4 is welded with the end plate 2 at the front side, the distribution pipe 4 is arranged in a hollow way, the front end of the distribution pipe is communicated with the refrigerant inlet 3.3 on the front side end plate 2 and is used for introducing freon gas into the distribution pipe 4, a row of through holes 4.1 are arranged on the outer wall of the distribution pipe 4, the central connecting line of the distribution pipe through holes 4.1 is parallel to the central axis of the distribution pipe 4, an outer sleeve 5 is further arranged outside the distribution pipe 4, the outer sleeve 5 is arranged in a hollow mode, one end of the outer sleeve 5 is fixed on the end plate 2 on the front side, a row of outer sleeve through holes 5.1 are formed in the outer sleeve 5, the central connecting line of the outer sleeve through holes 5.1 is parallel to the central axis of the distribution pipe 4, the central connecting line of the outer sleeve through holes 5.1 and the central connecting line of the distribution pipe through holes 4.1 are symmetrical about the central axis of the distribution pipe 4, the distribution pipe through holes 4.1 are positioned at the bottom of the distribution pipe 4, the outer sleeve through holes 5.1 are positioned at the top of the outer sleeve 5, each outer sleeve through hole 5.1 is respectively communicated with each medium channel 1.1, the freon gas in the distribution pipe 4 flows out of the distribution pipe through holes 4.1 and then flows into the outer sleeve 5, the freon gas forms a, the gas distribution effect is better, and the heat exchange effect is improved.
And the distribution pipe through hole 4.1, the size of outer tube through hole 5.1 is different, distribution pipe through hole 4.1 on the distribution pipe 4, and the diameter of outer tube through hole 5.1 on the outer tube 5 increases from front to back in proper order, namely the distribution pipe through hole 4.1 of the end plate 2 near the front side, the diameter of outer tube through hole 5.1 is little, the distribution pipe through hole 4.1 of the end plate 2 near the back side, the diameter of outer tube through hole 5.1 is big, because the pressure when the freon gas lets in the forepart of the distribution pipe 4 is big, and the pressure when the distribution pipe 4 rear part is little, so can lead to the gaseous of the medium passageway 1.1 near the end plate 2 of front side more, and let in the gaseous of the medium passageway 1.1 of the end plate 2 of back side, the heat transfer effect of the. The distribution pipe through holes 4.1 and the outer sleeve through holes 5.1 are arranged in a gradually increasing mode, so that Freon gas can averagely enter each medium channel of the heat exchanger, and the heat exchange effect of the heat exchanger is guaranteed.
According to the plate heat exchanger with the secondary distribution function, the distribution pipe and the outer sleeve are additionally arranged in the heat exchanger body, the freon gas in the distribution pipe flows into the outer sleeve after coming out of the distribution pipe through holes, and is distributed to each medium channel from the outer sleeve through holes after forming circulation in the outer sleeve, so that the gas distribution effect is better, and the heat exchange effect is improved. And the through holes on the distribution pipe and the outer sleeve are gradually enlarged from front to back, so that the Freon gas is uniformly distributed to the refrigerant channel, and the heat exchange effect of the heat exchanger is ensured.
After the Freon gas refrigerant enters the distribution pipe, the refrigerant can enter the through hole of the distribution pipe from the bottom of the pipeline firstly due to the pressure, and the aperture is gradually increased, so the refrigerant can be influenced by the resistance of the through hole of the distribution pipe and gradually enters from small holes which are slightly larger at the rear end, the refrigerant is uniformly fused in the distribution pipe for the first time, the refrigerant entering the second medium channel can be continuously fused and enter the third medium channel under the condition of being blocked again, but the refrigerant can be subjected to small holes which are arranged from small to large while entering, and the refrigerant can really form mixed flow at the moment, thereby the simultaneous entering state is really realized.
Claims (3)
1. A plate heat exchanger with secondary distribution function, its characterized in that: the heat-insulating plate is formed by welding a plurality of plates (1), a medium channel (1.1) is formed after two adjacent plates (1) are directly fixed and sealed, two end plates (2) are arranged at two ends of each plate (1), medium through holes (3) are formed in the end plates (2) and the plates (1), a plurality of medium through holes (3) are respectively a heat medium inlet (3.1), a heat medium outlet (3.2), a refrigerant inlet (3.3) and a refrigerant outlet (3.4), a distribution pipe (4) is arranged in a through hole where the refrigerant inlet (3.3) is located, the refrigerant inlets (3.3) of the distribution pipe (4) penetrating through all the plates (1) are welded with the front end plate (2) at the front side, the distribution pipe (4) is arranged in a hollow mode, the front end of the distribution pipe is communicated with the refrigerant inlets 3.3 on the front side end plate (2), a row of distribution pipe through holes (4.1) are formed in the outer wall of the distribution pipe (4), the central line of distribution pipe through-hole (4.1) is parallel with the axis of distribution pipe (4), the outside of distribution pipe (4) still is equipped with an outer tube (5), outer tube (5) cavity sets up, and the one end of outer tube (5) is fixed on the end plate (2) of front side, has seted up one row of outer tube through-hole (5.1) on outer tube (5), the central line of outer tube through-hole (5.1) is parallel with the axis of distribution pipe (4), the central line of outer tube through-hole (5.1) and the central line of distribution pipe through-hole (4.1) are 180 degrees symmetries about the axis of distribution pipe (4) to every outer tube through-hole (5.1) is linked together with each medium passageway (1.1) respectively, and the freon gas in distribution pipe (4) comes out from distribution pipe through-hole (4.1) after, leads to in distribution pipe (5), and freon gas forms the circulation in (5) distributes in each medium passageway (1) from through-hole (5).
2. A plate heat exchanger with secondary distribution according to claim 1, characterized in that: the sizes of the distribution pipe through hole (4.1) and the outer sleeve through hole (5.1) are different, the distribution pipe through hole (4.1) on the distribution pipe (4) and the diameter of the outer sleeve through hole (5.1) on the outer sleeve (5) are sequentially increased from front to back.
3. A plate heat exchanger with secondary distribution according to claim 1, characterized in that: the distribution pipe through hole (4.1) is positioned at the bottom of the distribution pipe (4), and the outer sleeve pipe through hole (4.1) is positioned at the top of the outer sleeve pipe (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911348619.0A CN111043881A (en) | 2019-12-24 | 2019-12-24 | Plate heat exchanger with secondary distribution function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911348619.0A CN111043881A (en) | 2019-12-24 | 2019-12-24 | Plate heat exchanger with secondary distribution function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111043881A true CN111043881A (en) | 2020-04-21 |
Family
ID=70238934
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911348619.0A Withdrawn CN111043881A (en) | 2019-12-24 | 2019-12-24 | Plate heat exchanger with secondary distribution function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111043881A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113188355A (en) * | 2021-05-31 | 2021-07-30 | 珠海格力电器股份有限公司 | Plate heat exchanger and heat exchange system with same |
| CN113203307A (en) * | 2021-05-31 | 2021-08-03 | 珠海格力电器股份有限公司 | Plate heat exchanger and heat exchange system with same |
| WO2023061323A1 (en) * | 2021-10-14 | 2023-04-20 | 浙江盾安人工环境股份有限公司 | Refrigerant distribution device and heat exchanger |
-
2019
- 2019-12-24 CN CN201911348619.0A patent/CN111043881A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113188355A (en) * | 2021-05-31 | 2021-07-30 | 珠海格力电器股份有限公司 | Plate heat exchanger and heat exchange system with same |
| CN113203307A (en) * | 2021-05-31 | 2021-08-03 | 珠海格力电器股份有限公司 | Plate heat exchanger and heat exchange system with same |
| WO2023061323A1 (en) * | 2021-10-14 | 2023-04-20 | 浙江盾安人工环境股份有限公司 | Refrigerant distribution device and heat exchanger |
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Legal Events
| 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 | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20200421 |
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| WW01 | Invention patent application withdrawn after publication |