CN112944735A - Heat exchanger assembly, falling film heat exchanger and heat pump unit - Google Patents
Heat exchanger assembly, falling film heat exchanger and heat pump unit Download PDFInfo
- Publication number
- CN112944735A CN112944735A CN201911258617.2A CN201911258617A CN112944735A CN 112944735 A CN112944735 A CN 112944735A CN 201911258617 A CN201911258617 A CN 201911258617A CN 112944735 A CN112944735 A CN 112944735A
- Authority
- CN
- China
- Prior art keywords
- heat exchanger
- air guide
- guide plate
- shell
- exchanger assembly
- Prior art date
- 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.)
- Pending
Links
- 239000011552 falling film Substances 0.000 title claims abstract description 17
- 238000009833 condensation Methods 0.000 abstract description 9
- 230000005494 condensation Effects 0.000 abstract description 9
- 239000007788 liquid Substances 0.000 description 11
- 239000003507 refrigerant Substances 0.000 description 5
- 238000001704 evaporation Methods 0.000 description 4
- 230000008020 evaporation Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B39/00—Evaporators; Condensers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2339/00—Details of evaporators; Details of condensers
- F25B2339/02—Details of evaporators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2339/00—Details of evaporators; Details of condensers
- F25B2339/04—Details of condensers
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention provides a heat exchanger assembly, a falling film type heat exchanger and a heat pump unit. The heat exchanger component comprises a shell and an air guide piece, wherein a heat exchange tube for heat exchange is arranged in the shell; the air guide piece is arranged in the shell and used for guiding air entering the shell to flow to the area where the heat exchange tube is located. The gas guide piece for guiding the gas to flow in the shell is arranged in the shell, so that the gas entering the heat exchanger is fully contacted with the heat exchange tube, and the purpose of improving the condensation effect of the heat exchanger is achieved.
Description
Technical Field
The invention belongs to the technical field of heat pump units, and particularly relates to a heat exchanger assembly, a falling film heat exchanger and a heat pump unit.
Background
In heat exchanger type for commercial large-scale cooling water set, the heat exchanger of falling liquid film formula structure is prepared for favouring, because this heat exchanger is when the evaporation operating mode, it is high to possess heat exchange efficiency, the volume of filling is few, maintain advantages such as convenient, but when this heat exchanger place heat pump operating mode unit switches into the condensation operating mode, the admission of top can receive the liquid distributor in the heat exchanger and block, the gaseous state refrigerant that causes the air inlet can't carry out abundant contact with the heat exchange tube, especially be close to the regional heat exchange tube of liquid distributor, even can't contact with gaseous state refrigerant, thereby lead to heat exchange efficiency low.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to provide a heat exchanger assembly, a falling film heat exchanger and a heat pump unit, which can improve the heat exchange efficiency under the condensation working condition.
In order to solve the above problems, the present invention provides a heat exchanger assembly, comprising a housing and an air guide, wherein a heat exchange area is included in the housing; the air guide piece is arranged in the shell and used for guiding the air entering the shell to flow to the heat exchange area.
Preferably, the heat exchanger assembly further comprises a support frame, the heat exchange region being provided at one side of the support frame; the air guide piece comprises an air guide plate, and the air guide plate is arranged between the other side of the support frame and the shell.
Preferably, the other side of the support frame is provided with a groove, one end of the air guide plate is inserted into the groove, and the other end of the air guide plate is connected with the inner wall of the shell.
Preferably, the air guide plate is provided with an overflowing hole, and the overflowing hole is used for communicating two sides of the air guide plate.
Preferably, the total area of the overflowing holes is larger than or equal to the cross-sectional area of the air inlet on the shell.
Preferably, the shape of the overflowing hole comprises one or a combination of a rectangle, a circle, an ellipse and a triangle.
Preferably, the air guide plate is obliquely arranged, and one end of the air guide plate connected with the shell is higher than the other end of the air guide plate.
Preferably, the included angle between the air guide plate and the cross section of the horizontal shaft of the shell is 0-90 degrees.
Preferably, the air guide plate separates a chamber between the support frame and the housing.
According to another aspect of the present invention there is provided a falling film heat exchanger comprising a heat exchanger assembly as described above.
According to a further aspect of the present invention, there is provided a heat pump unit comprising a heat exchanger assembly as described above or a falling film heat exchanger as described above.
The invention provides a heat exchanger assembly, which comprises a shell and an air guide piece, wherein a heat exchange area is arranged in the shell; the air guide piece is arranged in the shell and used for guiding the air entering the shell to flow to the heat exchange area. The gas guide piece for guiding the gas to flow in the shell is arranged in the shell, so that the gas entering the shell can fully enter a heat exchange area, and the purpose of improving the condensation effect of the heat exchanger is achieved.
Drawings
Figure 1 is a schematic cross-sectional view of a falling film heat exchanger according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a falling film heat exchanger according to an embodiment of the present invention in a gas flow direction when the falling film heat exchanger is used in an evaporation condition;
fig. 3 is a schematic view of a gas flow direction of a falling film heat exchanger according to an embodiment of the present invention in a condensing condition.
The reference numerals are represented as:
1. a housing; 11. a first fluid port; 12. a first gas port; 13. a second fluid port; 2. a liquid distributor; 21. a liquid baffle; 3. a gas guide plate; 4. a support frame; 5. a heat exchange tube.
Detailed Description
Referring to fig. 1 to 3 in combination, according to an embodiment of the present invention, a heat exchanger assembly includes a housing 1 and an air guide, wherein a heat exchange area is included in the housing 1; the air guide is arranged in the shell 1 and used for guiding the air entering the shell 1 to flow to the heat exchange area.
The gas is sent into through the heat exchanger subassembly air inlet inwards and takes place the heat exchange, and the gas that gets into in the heat exchanger is under the guide of air guide spare for gas and the 5 surperficial abundant contacts of heat exchange tube in the heat exchange area, take place the heat exchange, thereby can accelerate the heat transfer effect, when cooling or condensing gas, can promote gaseous cooling or condensation performance.
The heat exchanger component also comprises a support frame 4, and the heat exchange tube 5 is arranged on one side of the support frame 4; the air guide piece comprises an air guide plate 3, the air guide plate 3 is arranged between the other side of the support frame 4 and the shell 1, and air entering the heat exchanger assembly inevitably flows to a cavity between the support frame 4 and the shell 1 when being blocked or resisted by other parts in the heat exchanger assembly; the structure of the air guide plate 3 is adopted and is erected in the cavity, so that the air flow changes the direction and flows to the heat exchange tube 5, and the increase of the heat exchange efficiency is promoted.
In the concrete structure, the other side of the support frame 4 is provided with a groove, one end of the air guide plate 3 is inserted in the groove, and the other end is connected with the inner wall of the shell 1. The support frame 4 is provided with a groove, so that the manufacture and the assembly are simple and convenient.
In some embodiments, the air guide plate 3 is provided with an overflowing hole for communicating both sides of the air guide plate 3. Set up on air guide plate 3 and can switch on both sides and cross the discharge orifice, when guaranteeing that this heat exchanger subassembly is used for the evaporation operating mode, air guide plate 3 does not influence gaseous circulation, and the gaseous ability that evaporation operating mode produced passes the discharge orifice, or bypasses air guide plate 3 and flows to the first gas port 12 of heat exchanger. When this heat exchanger is in the condensation operating mode, the gas that first gas port 12 got into flows along 1 inner wall of casing, flows to a certain position and is blockked by deflector 3, and gas flows along deflector 3 surface, because gas has the certain speed, so the chance that gas will pass the discharge orifice of perpendicular to velocity of flow direction significantly reduces, and most gas still can be by direct guidance to the stringing region, and the discharge orifice can not seriously influence deflector 3's gas guide effect.
Specifically, the total area of the overflowing holes is larger than or equal to the cross-sectional area of the air inlet on the shell 1, so that the influence on the energy efficiency of the unit due to large overflowing pressure loss is avoided. The overflowing hole is not limited in shape and position, the shape of the overflowing hole can be one or combination of rectangle, circle, ellipse and triangle, and the overflowing hole can be arranged close to the edge and can be centered.
In order to improve the gas guiding effect of the gas guide plate 3, the gas guide plate 3 is arranged obliquely, one end of the gas guide plate 3 connected with the shell 1 is higher than the other end, and thus gas can flow to the area of the heat exchange tube 5 along the surface of the gas guide plate 3. Preferably, the angle α between the air guide plate 3 and the horizontal axis section of the housing 1 is 0 ° to 90 °.
Because the space that overflows between casing 1 and the support frame 4 can continue along the length direction of heat exchange tube 5, for the water conservancy diversion effect of guaranteeing air deflector 3, air deflector 3 separates the cavity between support frame 4 and casing 1, that is to say, air deflector 3 can extend along the length direction of heat exchange tube 5, covers whole excess and leaves the space.
According to an embodiment of the invention, a falling film heat exchanger comprises a heat exchanger assembly as described above.
The air guide plate 3 is arranged in the falling film heat exchanger, the air guide plate 3 is of a rectangular structure, the long edge is arranged along the length direction of the heat exchange tube 5, one end of the short edge is fixedly welded with the shell 1, and the other end of the short edge is fixedly inserted into the groove of the support plate.
Two air guide plates 3 are arranged in the shell 1 and are respectively arranged in the excess space at the two sides of the heat exchange tube 5 and the support frame 4, and gaseous refrigerants which are processed from a first air port 12 at the top of the falling film heat exchanger can be guided to the area of the heat exchange tube 5 under the condensation working condition.
Set up air guide plate 3 structure in this scheme, through air guide plate 3 with get into the gaseous state refrigerant direction middle stringing region of heat exchanger, guarantee gaseous state refrigerant and 5 surperficial abundant contacts of heat exchange tube to reach the purpose that promotes heat exchanger condensation effect, the liquid that the condensation obtained is derived by second liquid mouth 13.
When the heat exchanger is used as an evaporator, liquid is injected into the shell 1 from the first liquid port 11, the liquid is uniformly dispersed by the liquid distributor 2, and the gas flow direction generated by heat exchange rises to the first gas port 12 to be led out of the shell 1 as shown in fig. 2.
According to an embodiment of the invention, a heat pump unit comprises a heat exchanger assembly as described above or a falling film heat exchanger as described above.
It is easily understood by those skilled in the art that the above embodiments can be freely combined and superimposed without conflict.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention. The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (11)
1. A heat exchanger assembly, characterized by comprising a housing (1) and an air guide, wherein a heat exchange area is included in the housing (1); the air guide piece is arranged in the shell (1) and used for guiding the gas entering the shell (1) to flow to the heat exchange area.
2. The heat exchanger assembly according to claim 1, further comprising a support frame (4), the heat exchange area being provided at one side of the support frame (4); the air guide piece comprises an air guide plate (3), and the air guide plate (3) is arranged between the other side of the support frame (4) and the shell (1).
3. The heat exchanger assembly according to claim 2, wherein the other side of the support frame (4) is provided with a groove, one end of the air guide plate (3) is inserted into the groove, and the other end is connected with the inner wall of the shell (1).
4. The heat exchanger assembly according to claim 2 or 3, characterized in that the air guide plate (3) is provided with an overflow hole for communicating both sides of the air guide plate (3).
5. The heat exchanger assembly according to claim 4, characterized in that the total area of the flow-through holes is equal to or greater than the cross-sectional area of the air inlet opening in the housing (1).
6. The heat exchanger assembly of claim 4, wherein the shape of the flowthrough hole comprises one or a combination of a rectangle, a circle, an ellipse, and a triangle.
7. The heat exchanger assembly according to claim 2 or 3, characterized in that the gas guide plate (3) is arranged obliquely, and the gas guide plate (3) is connected to the housing (1) at one end higher than the other end.
8. The heat exchanger assembly according to claim 7, characterized in that the angle between the gas guide plate (3) and the horizontal axis cross-section of the housing (1) is 0 ° to 90 °.
9. A heat exchanger assembly according to claim 2 or 3, wherein the air guide plate (3) separates a chamber between the support frame (4) and the housing (1).
10. A falling film heat exchanger, comprising a heat exchanger assembly according to any one of claims 1 to 9.
11. A heat pump unit comprising a heat exchanger assembly according to any one of claims 1 to 9 or a falling film heat exchanger according to claim 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911258617.2A CN112944735A (en) | 2019-12-10 | 2019-12-10 | Heat exchanger assembly, falling film heat exchanger and heat pump unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911258617.2A CN112944735A (en) | 2019-12-10 | 2019-12-10 | Heat exchanger assembly, falling film heat exchanger and heat pump unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112944735A true CN112944735A (en) | 2021-06-11 |
Family
ID=76225473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911258617.2A Pending CN112944735A (en) | 2019-12-10 | 2019-12-10 | Heat exchanger assembly, falling film heat exchanger and heat pump unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112944735A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150013950A1 (en) * | 2013-07-11 | 2015-01-15 | Aaf-Mcquay Inc. | Heat exchanger |
| CN106123400A (en) * | 2016-07-06 | 2016-11-16 | 杭州赛富特设备有限公司 | A kind of falling film type evaporation device of band gravity separatory |
| US20170254573A1 (en) * | 2016-03-07 | 2017-09-07 | Daikin Applied Americas Inc. | Heat exchanger |
| CN107543338A (en) * | 2017-08-15 | 2018-01-05 | 重庆美的通用制冷设备有限公司 | Shell-and-tube evaporator and refrigeration unit |
| CN211345938U (en) * | 2019-12-10 | 2020-08-25 | 珠海格力电器股份有限公司 | Heat exchanger assembly, falling film heat exchanger and heat pump unit |
-
2019
- 2019-12-10 CN CN201911258617.2A patent/CN112944735A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150013950A1 (en) * | 2013-07-11 | 2015-01-15 | Aaf-Mcquay Inc. | Heat exchanger |
| US20170254573A1 (en) * | 2016-03-07 | 2017-09-07 | Daikin Applied Americas Inc. | Heat exchanger |
| CN106123400A (en) * | 2016-07-06 | 2016-11-16 | 杭州赛富特设备有限公司 | A kind of falling film type evaporation device of band gravity separatory |
| CN107543338A (en) * | 2017-08-15 | 2018-01-05 | 重庆美的通用制冷设备有限公司 | Shell-and-tube evaporator and refrigeration unit |
| CN211345938U (en) * | 2019-12-10 | 2020-08-25 | 珠海格力电器股份有限公司 | Heat exchanger assembly, falling film heat exchanger and heat pump unit |
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