CN108826752B - Novel heat exchanger, air conditioner indoor unit and air conditioner - Google Patents
Novel heat exchanger, air conditioner indoor unit and air conditioner Download PDFInfo
- Publication number
- CN108826752B CN108826752B CN201810676601.2A CN201810676601A CN108826752B CN 108826752 B CN108826752 B CN 108826752B CN 201810676601 A CN201810676601 A CN 201810676601A CN 108826752 B CN108826752 B CN 108826752B
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- Prior art keywords
- heat exchanger
- air conditioner
- fins
- indoor unit
- fin
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- 239000003507 refrigerant Substances 0.000 claims abstract description 46
- 230000000149 penetrating effect Effects 0.000 claims abstract description 6
- 238000012546 transfer Methods 0.000 claims description 16
- 238000004378 air conditioning Methods 0.000 claims description 5
- 238000002474 experimental method Methods 0.000 description 15
- 230000000694 effects Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008094 contradictory effect Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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
- 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
- F24F1/0007—Indoor units, e.g. fan coil 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
- F24F13/30—Arrangement or mounting of heat-exchangers
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses a novel heat exchanger, an air conditioner indoor unit and an air conditioner, wherein the novel heat exchanger comprises a plurality of fins and a plurality of refrigerant pipes penetrating through the fins, wherein the refrigerant pipes are distributed at intervals along the length direction of each fin and are arranged in a single row in the air guiding direction; the pipe diameter of the refrigerant pipe is 4.0 mm-5.6 mm, the interval between two adjacent refrigerant pipes is 11.4 mm-17.5 mm, and the width of the fin is 13 mm-18.8 mm. The technical scheme of the invention improves the overall energy efficiency of the heat exchanger.
Description
Technical Field
The invention relates to the technical field of air-conditioning products, in particular to a novel heat exchanger, an air-conditioning indoor unit and an air conditioner.
Background
At present, a double-row heat exchanger is generally adopted in an air conditioner indoor unit so as to increase the heat exchange area of a refrigerant and enhance the heat exchange capacity of the heat exchanger; however, in the application process of the double-row heat exchanger, the air flow penetrates through the heat exchanger, after the air flow completes sufficient heat exchange with the front row of fins, the speed of the air flow is reduced, at the moment, the air flow exchanges heat with the rear row of fins, the heat exchange effect is poor, namely, the capacity of the rear row of heat exchanger cannot be fully utilized, and actually relevant test data show that for the double-row heat exchanger, the front row can contribute 70% of heat exchange capacity, the rear row can only contribute 30% of heat exchange capacity, and the overall energy efficiency of the double-row heat exchanger is low.
Disclosure of Invention
The invention mainly aims to provide a novel heat exchanger, and aims to solve the technical problem that the overall energy efficiency of the heat exchanger in the prior art is low.
In order to achieve the above purpose, the novel heat exchanger provided by the invention comprises a plurality of fins and a plurality of refrigerant pipes penetrating through the fins, wherein the plurality of refrigerant pipes are arranged at intervals along the length direction of each fin and are arranged in a single row in the air guiding direction; the pipe diameter of the refrigerant pipe is 4.0 mm-5.6 mm, the interval between two adjacent refrigerant pipes is 11.4 mm-17.5 mm, and the width of the fin is 13 mm-18.8 mm.
Preferably, the interval between two adjacent refrigerant pipes is 13.2 mm-15.4 mm, and the width of the fin is 13.8 mm-17.06 mm.
Preferably, the interval between two adjacent refrigerant pipes is 13.5 mm-15.0 mm, and the width of the fin is 15.1 mm-17.2 mm.
Preferably, the interval between two adjacent refrigerant pipes is 14.1 mm-14.6 mm, and the width of the fin is 15.67 mm-16.11 mm.
Preferably, the width of a plurality of the fins is uniform.
Preferably, the intervals between any two adjacent refrigerant pipes are identical.
Preferably, the fins are arranged in an arc shape protruding towards the air inlet side.
Preferably, the surface of the windward side of the fin is convexly provided with a heat transfer structure.
Preferably, the surface of the leeward side of the fin is provided with air guide waves or is arranged in a flat sheet shape.
The invention also provides an air conditioner indoor unit, which comprises a novel heat exchanger, wherein the novel heat exchanger comprises a plurality of fins and a plurality of refrigerant pipes penetrating through the fins, and the refrigerant pipes are distributed at intervals along the length direction of each fin and are arranged in a single row in the air guiding direction; the pipe diameter of the refrigerant pipe is 4.0 mm-5.6 mm, the interval between two adjacent refrigerant pipes is 11.4 mm-17.5 mm, and the width of the fin is 13 mm-18.8 mm.
Preferably, the indoor unit of the air conditioner is a wall-mounted indoor unit of the air conditioner or a cabinet.
The invention also provides an air conditioner, which comprises an air conditioner outdoor unit and an air conditioner indoor unit, wherein the air conditioner indoor unit comprises a plurality of fins and a plurality of refrigerant pipes penetrating through the fins, and the plurality of refrigerant pipes are arranged at intervals along the length direction of each fin and are arranged in a single row in the air guiding direction; the pipe diameter of the refrigerant pipe is 4.0 mm-5.6 mm, the width of the fin is 11.4 mm-17.5 mm, and the interval between two adjacent refrigerant pipes is 13.0 mm-18.8 mm.
According to the technical scheme, the novel heat exchanger is introduced, the refrigerant pipes of the novel heat exchanger are arranged in a single row, when the pipe diameters of the refrigerant pipes are within the range of 4.0-5.6 mm, the interval Pt of the adjacent refrigerant pipes is kept within the range of 11.4-17.5 mm, the width Pl of the fins is kept within the range of 13.0-18.8 mm, and therefore the heat exchange performance of the double-row heat exchanger can be achieved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of an embodiment of an indoor unit of an air conditioner according to the present invention;
FIG. 2 is a schematic view of the fin and refrigerant tube configuration of the novel heat exchanger of FIG. 1;
FIG. 3 is a graph showing the integrated heat exchange performance change rate and Pt;
FIG. 4 is a graph showing the integrated heat exchange performance change rate and Pl;
FIG. 5 is a schematic view of the structure of the novel heat exchanger of FIG. 1;
fig. 6 is a schematic view, partially in section, of the novel heat exchanger of fig. 5.
Reference numerals illustrate:
| Reference numerals | Name of the name | Reference numerals | Name of the name |
| 1 | Novel heat exchanger | 11 | Fin type |
| 111 | Heat transfer structure | 12 | Refrigerant pipe |
| 2 | Outer casing | 3 | Wind wheel assembly |
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present invention, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
The invention provides a novel heat exchanger and an air conditioner indoor unit with the novel heat exchanger, wherein in the embodiment, the air conditioner indoor unit is a wall-mounted air conditioner indoor unit or a cabinet-type air conditioner, and the following description will specifically take a hanging machine as an example. Referring to fig. 1, the wall-mounted indoor unit of the air conditioner includes a housing 2 mounted on a wall, a wind wheel assembly 3 disposed in the housing 2, and a novel heat exchanger 1 disposed above the wind wheel assembly 3 in a semi-surrounding manner, for example, but not limited to, the wind wheel assembly 3 is a cross flow wind wheel. Of course, in other embodiments, the indoor unit of the air conditioner may be of other types, and the design is not limited thereto.
In the embodiment of the present invention, referring to fig. 1 to 4, the novel heat exchanger 1 includes a plurality of fins 11 and a plurality of refrigerant tubes 12 penetrating the plurality of fins 11, the plurality of refrigerant tubes 12 are arranged at intervals along the length direction of each fin 11, and the ends of the plurality of refrigerant tubes are connected by connection joints, wherein the connection joints are generally U-shaped elbows. And is arranged in a single row in the air guiding direction; it can be understood that the heat exchangers are arranged in a single row, so that the problem that the heat exchange of the rear row fins 11 of the existing double-row heat exchanger is insufficient can be effectively solved, and the next consideration is to improve the heat exchange performance of the heat exchanger so as to achieve the effect of the double-row heat exchanger; in contrast, it was found that the interval Pt between the adjacent refrigerant tubes 12 and the width Pl of the fin 11 significantly affect the heat exchange performance of the heat exchanger when the refrigerant tubes 12 have a constant tube diameter.
In the case of controlling Pl to be constant in the pipe diameter range of 4.0mm to 5.6mm (e.g., 4.0mm, 4.2mm, 4.5mm, 4.8mm, 5.0mm, 5.2mm, 5.5mm, 5.6 mm) of the refrigerant pipe 12, the relationship between Pt and a was tested, and table 1 was obtained by seven sets of data from experiment one to experiment seven:
TABLE 1
From the seven sets of data in table 1, a relationship curve of the interval Pt between the adjacent refrigerant tubes 12 and the heat exchange performance a of the heat exchanger (see fig. 3) is fitted:
A＝0.0041Pt3-0.2819Pt2+5.5453Pt-27.6,R2＝0.999。
as shown in the figure, in the pipe diameter range of 4.0-5.6 mm of the refrigerant pipe 12, the heat exchange performance A of the heat exchanger increases with the increase of the interval Pt of the adjacent refrigerant pipes 12, then reaches a peak value (Pt is approximately equal to 14.5 mm), and then gradually decreases.
In the pipe diameter range of 4.0 mm-5.6 mm of the refrigerant pipe 12, the relation between the ratio (D) of the interval Pt of the adjacent refrigerant pipe 12 and the width Pl of the fin 11 and the heat exchange performance B of the heat exchanger is tested, and referring to Table 2:
| B(％) | D(Pt/Pl) | Pt(mm) | Pl(mm) | |
| experiment one | 2.5 | 1.45 | 14.5 | 10 |
| Experiment two | 3.6 | 1.318182 | 14.5 | 11 |
| Experiment three | 4.7 | 1.208333 | 14.5 | 12 |
| Experiment four | 5.57 | 1.115385 | 14.5 | 13 |
| Experiment five | 6.1 | 1.035714 | 14.5 | 14 |
| Experiment six | 6.44 | 0.966667 | 14.5 | 15 |
| Experiment seven | 6.57 | 0.90625 | 14.5 | 16 |
| Experiment eight | 6.43 | 0.852941 | 14.5 | 17 |
| Experiment nine | 6.05 | 0.805556 | 14.5 | 18 |
| Experiment ten | 5.45 | 0.7631579 | 14.5 | 19 |
| Experiment eleven | 4.65 | 0.725 | 14.5 | 20 |
| Experiment twelve | 3.5 | 0.690476 | 14.5 | 21 |
| Experiment thirteen | 2.8 | 0.659091 | 14.5 | 22 |
From the nine sets of data in table 2, a relationship curve of D to heat exchange performance B (see fig. 4) was fitted:
Y＝-39.4D4+211.7D3-420.78D2+360.6D-105.22;R2＝0.997。
In this embodiment, (Amax-1)% to amax% and (Bmax-1)% to bmax% are selected as the performance-better interval, and the corresponding Pt calculated should satisfy: pt.epsilon.11.4 mm,17.5mm, for example Pt=11.5 mm, 11.6mm, 11.7mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 17.3mm, 17.4mm, etc. The corresponding Pl should satisfy: pi e 13mm,18.8mm, e.g. pi=13.1 mm, 13.2mm, 14mm, 15mm, 16mm, 17mm, 18mm, 18.5mm, 18.6mm, 18.7mm.
Amax is approximately equal to 6.15, bmax is approximately equal to 6.57, the heat exchange performance of the heat exchanger after the two are combined is set to be C,
If C ε [6.0,6.57], then Pt ε [13.2mm,15.4mm ], e.g., pt=13.3 mm, 13.4mm, 14mm, 15mm, 15.2mm, 15.3mm; pi e [13.8mm,17.06mm ], e.g. pi=13.9 mm, 14mm, 15mm, 16mm, 17mm.
In addition, selecting 0.98Amax to Amax and 0.98Bmax to Bmax as the better performance interval, calculating to obtain corresponding Pt should satisfy: pt.epsilon.13.5 mm,15.0mm ], the corresponding Pl should satisfy: pl.epsilon.15.1 mm,17.2 mm.
If C.epsilon.amax, bmax ], then C is approximately [6.15,6.57], pt.epsilon.14.1 mm,14.6mm, pl.epsilon.15.67 mm,16.11 mm.
According to the technical scheme, the novel heat exchanger 1 is introduced, the refrigerant pipes 12 of the novel heat exchanger 1 are arranged in a single row, when the pipe diameters of the refrigerant pipes 12 are within 4.0-5.6 mm, the interval Pt of the adjacent refrigerant pipes 12 is kept within 11.4-17.5 mm, the width Pl of the fins 11 is kept within 13-18.8 mm, and therefore the heat exchange performance of the double-row heat exchanger can be achieved.
Further, the intervals between any two adjacent refrigerant tubes 12 are uniform. It can be understood that the arrangement can reduce the technological difficulty of forming the coolant holes on the fins 11, thereby improving the overall production efficiency of the novel heat exchanger 1, and ensuring the uniformity of the air outlet after the air flow passes through the heat exchanger.
Further, the width of the plurality of fins 11 is uniform. It can be appreciated that the arrangement is beneficial to improving the production efficiency of the novel heat exchanger 1 on one hand and guaranteeing the uniformity of air outlet after the air flow passes through the heat exchanger on the other hand.
Further, referring to fig. 5 and 6, the fins 11 are arranged in an arc shape protruding toward the air inlet side, that is, the novel heat exchanger 1 is integrally arranged in an arc shape protruding toward the air inlet side, so that the interval between the adjacent fins 11 gradually becomes smaller in the direction from the windward side to the leeward side, thereby forming a wind guiding effect and better guiding the airflow to pass through the novel heat exchanger 1.
Further, referring to fig. 6, the surface of each fin 11 on the windward side is provided with a heat transfer structure 111. It can be appreciated that the adjacent fins 11 have larger intervals on the windward side, and the air flow is easy to pass through, so that the heat exchange area on the windward side is increased by adopting the heat transfer structure 111, and then the heat exchange effect on the windward side is enhanced. In this embodiment, the heat transfer structure 111 is a plurality of heat transfer windows arranged at intervals along the air guiding direction of the fin 11, and the plurality of heat transfer windows are respectively arranged on two opposite sides of the fin 11; of course, in other embodiments, the heat transfer structure 111 may be a protruding heat transfer block, a protruding heat transfer strip, or the like, and the design is not limited thereto.
Further, referring to fig. 6, the surface of each fin 11 on the leeward side is arranged in a flat sheet. It can be appreciated that the spacing between the leeward sides of the adjacent fins 11 is smaller, and the flat plate is adopted, so that on one hand, the passage of air flow is facilitated, the obstruction to the air flow is avoided, and on the other hand, the fins 11 are not required to be additionally designed, so that the processing cost of the novel heat exchanger 1 is reduced. It should be noted that the present design is not limited thereto, and in other embodiments, the surface of each fin 11 on the leeward side may also be provided with air guiding corrugations.
The invention also provides an air conditioner which comprises an air conditioner outdoor unit and an air conditioner indoor unit, wherein the specific structure of the air conditioner indoor unit refers to the embodiment, and as the air conditioner adopts all the technical schemes of all the embodiments, the air conditioner at least has all the beneficial effects brought by the technical schemes of the embodiments, and the detailed description is omitted.
The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the description of the present invention and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the invention.
Claims (8)
1. The novel heat exchanger is characterized by comprising a plurality of fins and a plurality of refrigerant pipes penetrating through the fins, wherein the refrigerant pipes are distributed at intervals along the length direction of each fin and are arranged in a single row in the air guiding direction; the pipe diameter of the refrigerant pipes is 4.0 mm-5.6 mm, the interval between two adjacent refrigerant pipes is 14.1 mm-14.6 mm, and the width of the fins is 15.67 mm-16.11 mm;
The surface of the leeward side of the fin is provided with wind guiding waves or is arranged in a flat sheet shape.
2. The novel heat exchanger of claim 1, wherein a plurality of said fins are uniform in width.
3. The novel heat exchanger of claim 1, wherein the spacing between any two adjacent refrigerant tubes is uniform.
4. The novel heat exchanger of claim 1, wherein a plurality of said fins are arranged in an arcuate pattern protruding toward the inlet side.
5. The novel heat exchanger of claim 1, wherein the surface of the windward side of the fin is convexly provided with a heat transfer structure, the heat transfer structure is a plurality of heat transfer windows which are arranged at intervals along the wind guiding direction of the fin, or the heat transfer structure is a convexly arranged heat transfer block or heat transfer strip.
6. An indoor unit for an air conditioner, comprising a novel heat exchanger according to any one of claims 1 to 5.
7. The air conditioning indoor unit of claim 6, wherein the air conditioning indoor unit is a wall-mounted air conditioning indoor unit or a cabinet.
8. An air conditioner comprising an air conditioner outdoor unit and an air conditioner indoor unit according to claim 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810676601.2A CN108826752B (en) | 2018-06-26 | 2018-06-26 | Novel heat exchanger, air conditioner indoor unit and air conditioner |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810676601.2A CN108826752B (en) | 2018-06-26 | 2018-06-26 | Novel heat exchanger, air conditioner indoor unit and air conditioner |
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| Publication Number | Publication Date |
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| CN108826752A CN108826752A (en) | 2018-11-16 |
| CN108826752B true CN108826752B (en) | 2024-07-26 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202008311U (en) * | 2010-12-22 | 2011-10-12 | 珠海格力电器股份有限公司 | Fin of fin tube type heat exchanger, fin tube type heat exchanger and air conditioner outdoor unit |
| CN108180560A (en) * | 2018-03-21 | 2018-06-19 | 广东美的制冷设备有限公司 | Cabinet air-conditioner and air conditioner |
| CN208382625U (en) * | 2018-06-26 | 2019-01-15 | 广东美的制冷设备有限公司 | New type heat exchanger, air conditioner indoor unit and air conditioner |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001317890A (en) * | 2000-05-01 | 2001-11-16 | Matsushita Electric Ind Co Ltd | Heat exchanger with fin |
| CN107388874A (en) * | 2017-08-10 | 2017-11-24 | 海信科龙电器股份有限公司 | Heat exchange fin and fin type heat exchanger |
-
2018
- 2018-06-26 CN CN201810676601.2A patent/CN108826752B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202008311U (en) * | 2010-12-22 | 2011-10-12 | 珠海格力电器股份有限公司 | Fin of fin tube type heat exchanger, fin tube type heat exchanger and air conditioner outdoor unit |
| CN108180560A (en) * | 2018-03-21 | 2018-06-19 | 广东美的制冷设备有限公司 | Cabinet air-conditioner and air conditioner |
| CN208382625U (en) * | 2018-06-26 | 2019-01-15 | 广东美的制冷设备有限公司 | New type heat exchanger, air conditioner indoor unit and air conditioner |
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