CN106705270A - Heat exchanger - Google Patents
Heat exchanger Download PDFInfo
- Publication number
- CN106705270A CN106705270A CN201510769832.4A CN201510769832A CN106705270A CN 106705270 A CN106705270 A CN 106705270A CN 201510769832 A CN201510769832 A CN 201510769832A CN 106705270 A CN106705270 A CN 106705270A
- Authority
- CN
- China
- Prior art keywords
- heat exchanger
- fenestration
- fin
- air
- exchanger according
- 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.)
- Granted
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/14—Heat exchangers specially adapted for separate outdoor units
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/22—Means for preventing condensation or evacuating condensate
- F24F13/222—Means for preventing condensation or evacuating condensate for evacuating condensate
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention provides a heat exchanger. The heat exchanger comprises a plurality of fins (1) and flat pipes (3) arranged in installation grooves (2) formed between the adjacent fins (1); each fin (1) comprises a heat transfer part (4); each heat transfer part (4) is provided with a plurality of window opening structures (5); and in the air flowing direction and on the rear half sections of the heat transfer parts (4), the height of flat parts (7) formed between the window opening structures (5) and the flat pipes (3) located on the lower sides of the window opening structures (5) is gradually increased, and the height of the window opening structures (5) is gradually decreased. According to the heat exchanger provided by the invention, the defect that the defrosting time of heat exchangers is increased due to the fact that condensate water is accumulated in the prior art can be overcome.
Description
Technical field
The present invention relates to refrigeration and air-conditioning technical field, more particularly to a kind of heat exchanger.
Background technology
In the refrigerant loop of air-conditioner, being provided with makes refrigerant carry out the outdoor of heat exchange with outdoor air
Heat exchanger.During the heating operation of air-conditioner, outdoor heat converter plays evaporator.If room
The evaporating temperature of the refrigerant in outer heat-exchanger is less than 0 DEG C, and the moisture in air will frosting (freezing)
And be attached on outdoor heat converter.Therefore, in the heating operation mistake in outside air temperature in the state of relatively low
Cheng Zhong, often will carry out what is melted for the frost made to be attached on outdoor heat converter by one section of stipulated time
Defrosting is acted.In the action process that defrosts, high temperature refrigerant is supplied to outdoor heat converter, is attached to outdoor
Frost on heat exchanger is melted by refrigerant heat.As a result, the frost being attached on outdoor heat converter
Discharged from outdoor heat converter after being melted into condensed water.
On the other hand, the heat exchanger for making flat tube be arranged above and below can be used as the outdoor heat converter of air conditioner.
But, in the heat exchanger, due to flat tube flattened side upward, thus easily accumulated on flat tube
Deposit condensed water.Particularly, if forming multiple shutter plate portions on the surface of fin, condensed water will enter
And be stored between the elongated cuts formed with shutter plate portion is cut.If as described above in the week of fin
While contain condensed water, then condensed water will hinder heat to be transmitted to frost from refrigerant, it is possible in the presence of making
The problem that frost increases the time required to melting completely.
The content of the invention
Technical purpose of the invention be that solution in the prior art heat exchanger due to condensed water accumulate and causing
A kind of white time increased defect, there is provided heat exchanger.
To reach technical purpose of the invention, the invention provides a kind of heat exchanger, including multiple fins and set
The flat tube in the mounting groove between adjacent fins is put, fin includes heat transfer part, multiple is provided with heat transfer part
Fenestration, along the flow direction of air, in the second half section of heat transfer part, fenestration with its on the downside of flat tube
Between the increasing height of flat part that is formed, the height of fenestration successively decreases.
In heat exchanger provided by the present invention, in the second half section of heat transfer part, make fenestration with its on the downside of it is flat
The increasing height of the flat part formed between pipe, the area of flat part is gradually increased along the flow direction of air,
Allow that the condensed water built up along air-flow direction is drained in time by the flat part that area is incremented by,
Avoid condensed water from largely gathering and hinder heat to be transmitted to frost from refrigerant, raising defrost efficiency, when shortening defrost
Between.
Brief description of the drawings
Fig. 1 is the local structural graph of the heat exchanger of first embodiment of the invention；
Fig. 2 is the local structural graph of the heat exchanger of second embodiment of the invention；
Fig. 3 is the schematic diagram of the fenestration of the heat exchanger of first embodiment of the invention；
Fig. 4 is the schematic diagram of the fenestration of the heat exchanger of second embodiment of the invention；
Fig. 5 is the structure chart of the flange of the heat exchanger of the embodiment of the present invention；And
Fig. 6 is the three-dimensional structure diagram of the heat exchanger of the embodiment of the present invention.
Description of reference numerals：1st, fin；2nd, mounting groove；3rd, flat tube；4th, heat transfer part；5th, fenestration；
6th, arc guidance part；7th, flat part；8th, leeward side plate；9th, vertical rib；10th, rib is connected；11、
Rising portions；12nd, flange.
Specific embodiment
Embodiments of the invention are described in detail below, but the present invention can be defined by the claims and
The multitude of different ways of covering is implemented.
Referring to shown in Fig. 1 to Fig. 6, the invention provides a kind of heat exchanger, including multiple fins 1 and setting
The flat tube 3 in mounting groove 2 between adjacent fins 1, fin 1 includes heat transfer part 4, is set on heat transfer part 4
Multiple fenestrations 5 are equipped with, along the flow direction of air, in the second half section of heat transfer part 4, fenestration 5
The increasing height of the flat part 7 formed between the flat tube 3 on the downside of it, the height of fenestration 5 successively decreases.
In heat exchanger of the invention, due to the second half section in heat transfer part 4, fenestration 5 with its on the downside of
The increasing height of the flat part 7 formed between flat tube 3, flat part is gradually increased along the flow direction of air
7 area in unit length, can be such that the condensed water built up along air-flow direction is tied by opening a window
The incremental flat part 7 of area is drained in time between structure 5 and the flat tube on the downside of it 3, it is to avoid condensed water is largely accumulated
Gather and hinder heat to be transmitted to frost from refrigerant, raising defrost efficiency shortens the defrost time.
Flat part 7 between fenestration 5 and the flat tube on the upside of it 3 highly keeps along the flow direction of air
Constant, this is because flat part 7 herein does not influence for the discharge of condensed water, therefore without to herein
Flat part 7 make a change.
The length direction of fenestration 5 intersects with the flow direction of air so that air energy in flow process
Enough sufficiently pass through fenestration 5 to be exchanged heat, improve the heat exchange efficiency of heat exchanger.In the present embodiment,
Fenestration 5 be shutter, multiple fenestrations 5 along air flow direction interval setting.
With reference to shown in Figure 1, the first embodiment of heat exchanger of the invention, along the flowing side of air
To in the front half section of heat transfer part 4, the increasing height of fenestration 5.In the present embodiment, in front half section,
The weather side windowing height of heat transfer part 4 is less than downwind side windowing height, fenestration 5 and the upper side and lower side
The height of the flat part between flat tube 3 reduces with air-flow direction, the flat tube of fenestration 5 and upside
The height of the flat part between 3 successively decreases.In the second half section, the weather side windowing height of heat transfer part 4 is more than leeward
Side windowing height, the height of the flat part between fenestration and the flat tube 3 of downside is with from weather side direction
Downwind side and increase, the flat part between the flat tube 3 of fenestration and upside side it is highly identical.
On the rectangular narrow air duct that flat tube 3 and fin 1 are constituted, near the air cooling-down of flat tube 3
Comparatively fast, the air therefore near flat tube 3 comparatively fast more forms condensed water.
Under cooling condition, 27 DEG C of indoor dry-bulb temperature, 19 DEG C of wet-bulb temperature.Flow through the wet of indoor heat exchanger
After air themperature is reduced to 15 DEG C or so, water condensation is begun with.The water condensed wherein between 15~5 DEG C is about
Account for the 75% of total condensing capacity.
Humid air formed condensate by the grade of fin 1 surface of solids adsorb before, in atmosphere with water smoke shape
State is present, and continues to float with the wind, is adsorbed until encountering fin 1 or moisture film.
Because the temperature difference near air intake vent is larger, heat exchange amount is larger, therefore very fast near the air meeting of air intake vent
More formation condensate.
Therefore by reducing the height of fenestration 5 at air intake vent, and fenestration 5 and upside can be caused
The mode of larger flat part height is reserved and the flat tube 3 of downside between and encounters fin 1 reducing water smoke
Probability so that water smoke continues to float to downwind side and just adsorbed by fin 1 or moisture film.Along air-flow direction
The fenestration 5 of increasing height, ensure that the height minimum of the fin 1 at air intake vent, and water smoke is adsorbed
Probability it is minimum, therefore the probability that humid air forms condensed water at air intake vent can be reduced, it is to avoid weather side
Moisture film or frost thickness increase it is too fast, improve heat exchanger overall heat exchange amount.
Along the flow direction of air, the louver angle positioned at the fenestration 5 of the front half section of heat transfer part 4 is incremented by.
In the front half section of heat transfer part 4, the weather side louver angle of fenestration 5 is less than downwind side louver angle,
Louver angle gradually increases from weather side to downwind side, can equally reduce the probability that water smoke encounters fin so that
Water smoke continues to float to downwind side and is just adsorbed by fin or moisture film.
For the louver angle of the fenestration 5 of the second half section of heat transfer part 4, there are two kinds of different structures, first
Plant as shown in figure 3, identical with front half section, the flow direction louver angle also along air is incremental；Second such as
It is different from front half section shown in Fig. 4, in this kind of implementation method, the louver angle of second half section along air flowing
Direction does not change, and the opening direction of the fenestration of second half section is opposite with front half section.For the first
For structure, from after the entrance of fenestration 5, the guiding according to fenestration 5 is all the time along adjacent for air
Gap flowing between two fins 1, for second structure, after air enters from fenestration 5,
Flow one section in the gap of guiding in front half section according to fenestration 5 between two adjacent fins 1
After distance, flow back to original path through the guiding of fenestration 5 again in the second half section and move on.
For as the outdoor heat exchanger during heating operation, air between flow through heat exchanger fin
When temperature is less than 0 DEG C, the moisture in air will condense into water droplet or ice pellets, i.e. mist or frost.But,
Water droplet or ice pellets may proceed to float to downwind side, until when encounter fin, tube wall, moisture film or frost layer,
Can just adhere on heat exchangers.
Therefore, by using above-mentioned structure, the moisture film of weather side or frost thickness is made to increase slack-off, under
The moisture film or frost thickness of wind side increase and accelerate, it is possible to so that moisture film on whole heat-exchanger surface or
Person's frost thickness growth rate tends to uniform, and then improves overall heat exchange amount, extends the frosting cycle.
Fenestration 5 is inclined relative to vertical direction, and the lower end of fenestration 5 is upper than fenestration 5
Tell the angle of inclination of fenestration 5 between 10 degree to 30 degree so as to be located at closer to downwind side in end
Condensed water on fin can flow out rapidly via the incline structure of fenestration 5, be not accumulated in windowing knot
At structure 5, it is to avoid condensed water causes to hinder to the heat exchange at fenestration 5, improves at fenestration 5
Heat exchange efficiency.
The opening of mounting groove 2 is located at weather side so that the entrance of mounting groove 2 will not cause resistance to air flow
Hinder, it is possible to increase the flow efficiency of air.Arc guidance part 6 is provided with the opening of mounting groove 2.Arc
Guidance part can form guide effect to the installation of flat tube 3, improve the installation effectiveness of flat tube 3.
Along air-flow direction, the end of multiple heat transfer parts 4 is connected to form leeward side plate 8, leeward side plate 8
On be provided with the vertical rib 9 that multiple length directions along leeward side plate 8 extend.Vertical rib 9 can increase
The structural strength of strong leeward side plate 8, and then strengthen the structural strength of whole fin 1.
The connection rib 10 for horizontally or diagonally setting, connection rib connection are included on the fin of the end of flat tube 3
On vertical rib 9.Connection rib can carry out water conservancy diversion to the condensed water flowed down from flat part 7, while
The fin structure intensity of the end of flat tube 3 can also be strengthened.
Cut out on fin 1 and show the rising portions 11 that erect relative to fin 1, the top of rising portions 11 with
Adjacent fin 1 is in contact, and the upper surface of rising portions 11 is inclined relative to horizontal setting.Rising portions 11
The interval of regulation can be ensured between two adjacent fins 1, the installation being easy to implement between fin 1 is determined
Position.The upper surface of rising portions 11 is inclined relative to horizontal, and can make to be located on the upper surface of rising portions 11
Condensed water promptly flow downwards, it is to avoid occur condensed water accumulation phenomenon.Preferably, rising portions 11
It is two, is separately positioned on the diagonal side of fin 1, so that the positioning between adjacent fins 1 is more stablized
It is reliable.
The bottom of fin 1 is provided with flange 12, and flange 12 is c-type, flange with the section that fin 1 is formed
12 extend to downwind side from the weather side of heat transfer part 4, and along the flow direction of air, the height of flange 12
It is incremented by.In downwind side, the arc section for being close to the formation of flat tube end continues about 30 degree of flange, it is possible to use
Alee side plate 8 flows capillarity guiding condensed water, consequently facilitating the timely discharge of condensed water.
Preferably, the spacing between flange 12 and fin 1 where it is one of the spacing between adjacent fins 1
Half, so as to while ensureing that condensed water is quickly discharged, it is to avoid interfered between flange 12 and fin 1.
With reference to shown in Figure 2, the second embodiment of heat exchanger of the invention, itself and first embodiment
Essentially identical, difference is, in the present embodiment, along the flow direction of air, in whole heat transfer part
The height of the fenestration 5 on 4 successively decreases.This kind of structure ensure that the area of flat part 7 all the time with cold
Coagulate the increase of water and increase, ensure that the timely discharge of condensed water.
The preferred embodiments of the present invention are the foregoing is only, is not intended to limit the invention, for ability
For the technical staff in domain, the present invention can have various modifications and variations.It is all in the spirit and principles in the present invention
Within, any modification, equivalent substitution and improvements made etc., should be included in protection scope of the present invention it
It is interior.
Claims (10)
1. a kind of heat exchanger, it is characterised in that including multiple fins (1) and be arranged on the adjacent fin (1)
Between mounting groove (2) in flat tube (3), the fin (1) includes heat transfer part (4), the biography
Multiple fenestrations (5) are provided with hot portion (4), along the flow direction of air, in the heat transfer part
(4) second half section, formed between the fenestration (5) and the flat tube (3) on the downside of it
The increasing height of flat part (7), the height of the fenestration (5) successively decreases.
2. heat exchanger according to claim 1, it is characterised in that along the flow direction of air, in the biography
The front half section of hot portion (4), the increasing height of the fenestration (5)；Or along the flow direction of air,
The height of the fenestration (5) on the whole heat transfer part (4) successively decreases.
3. heat exchanger according to claim 1, it is characterised in that along the flow direction of air, positioned at described
The louver angle of the fenestration (5) of heat transfer part (4) front half section is incremented by.
4. heat exchanger according to claim 1, it is characterised in that the fenestration (5) is relative to lead
Nogata is more leaned on to inclination, and the lower end of the fenestration (5) than the upper end of the fenestration (5)
Nearly downwind side, the angle of inclination of the fenestration (5) is between 10 degree to 30 degree.
5. heat exchanger according to claim 1, it is characterised in that the opening of the mounting groove (2) is located at
Weather side.
6. heat exchanger according to claim 5, it is characterised in that set at the opening of the mounting groove (2)
It is equipped with arc guidance part (6).
7. heat exchanger according to claim 1, it is characterised in that along air-flow direction, multiple biographies
The end of hot portion (4) is connected to form leeward side plate (8), and multiple is provided with the leeward side plate (8)
Along the vertical rib (9) that the length direction of the leeward side plate (8) extends.
8. heat exchanger according to claim 7, it is characterised in that the wing of flat tube (3) end
Include the connection rib (10) for horizontally or diagonally setting, connection rib (10) connection on piece (1)
On the vertical rib (9).
9. heat exchanger according to claim 1, it is characterised in that cut out on the fin (1) relative
In the fin (1) rising portions (11) that erect of performance, the top of the rising portions (11) with it is adjacent
The fin (1) be in contact, the surface of the rising portions (11) is inclined relative to horizontal setting.
10. heat exchanger according to claim 1, it is characterised in that the bottom of the fin (1) is provided with
Flange (12), the section that the flange (12) is formed with the fin (1) is c-type, described to turn over
Side (12) extends to downwind side from the weather side of the heat transfer part (4), and along the flow direction of air,
The increasing height of the flange (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510769832.4A CN106705270B (en) | 2015-11-12 | 2015-11-12 | Heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510769832.4A CN106705270B (en) | 2015-11-12 | 2015-11-12 | Heat exchanger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106705270A true CN106705270A (en) | 2017-05-24 |
| CN106705270B CN106705270B (en) | 2020-07-17 |
Family
ID=58929570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510769832.4A Active CN106705270B (en) | 2015-11-12 | 2015-11-12 | Heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106705270B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108151572A (en) * | 2017-12-22 | 2018-06-12 | 河南百年融熥实业有限公司 | A kind of helical fin heat exchanger tube |
| CN108224553A (en) * | 2017-11-21 | 2018-06-29 | 珠海格力电器股份有限公司 | Air conditioner air deflector, air conditioner indoor unit and air conditioner |
| WO2020062721A1 (en) * | 2018-09-30 | 2020-04-02 | 珠海格力电器股份有限公司 | Fin and heat exchanger with same |
| WO2023185343A1 (en) * | 2022-04-02 | 2023-10-05 | 丹佛斯有限公司 | Heat exchanger |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0590173U (en) * | 1992-04-20 | 1993-12-07 | 住友軽金属工業株式会社 | Fin tube heat exchanger |
| CN1682088A (en) * | 2002-09-12 | 2005-10-12 | 约克国际公司 | Heat exchanger fin having canted lances |
| CN103299150A (en) * | 2011-01-21 | 2013-09-11 | 大金工业株式会社 | Heat exchanger and air conditioner |
| CN103314269A (en) * | 2011-01-21 | 2013-09-18 | 大金工业株式会社 | Heat exchanger and air conditioner |
| CN103339457A (en) * | 2011-01-21 | 2013-10-02 | 大金工业株式会社 | Heat exchanger and air conditioner |
| CN103492826A (en) * | 2011-04-21 | 2014-01-01 | Lg电子株式会社 | Heat exchanger |
-
2015
- 2015-11-12 CN CN201510769832.4A patent/CN106705270B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0590173U (en) * | 1992-04-20 | 1993-12-07 | 住友軽金属工業株式会社 | Fin tube heat exchanger |
| CN1682088A (en) * | 2002-09-12 | 2005-10-12 | 约克国际公司 | Heat exchanger fin having canted lances |
| CN103299150A (en) * | 2011-01-21 | 2013-09-11 | 大金工业株式会社 | Heat exchanger and air conditioner |
| CN103314269A (en) * | 2011-01-21 | 2013-09-18 | 大金工业株式会社 | Heat exchanger and air conditioner |
| CN103339457A (en) * | 2011-01-21 | 2013-10-02 | 大金工业株式会社 | Heat exchanger and air conditioner |
| CN103492826A (en) * | 2011-04-21 | 2014-01-01 | Lg电子株式会社 | Heat exchanger |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108224553A (en) * | 2017-11-21 | 2018-06-29 | 珠海格力电器股份有限公司 | Air conditioner air deflector, air conditioner indoor unit and air conditioner |
| CN108151572A (en) * | 2017-12-22 | 2018-06-12 | 河南百年融熥实业有限公司 | A kind of helical fin heat exchanger tube |
| WO2020062721A1 (en) * | 2018-09-30 | 2020-04-02 | 珠海格力电器股份有限公司 | Fin and heat exchanger with same |
| WO2023185343A1 (en) * | 2022-04-02 | 2023-10-05 | 丹佛斯有限公司 | Heat exchanger |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106705270B (en) | 2020-07-17 |
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