CN111197816B - Heat exchange fan assembly and air conditioner - Google Patents
Heat exchange fan assembly and air conditioner Download PDFInfo
- Publication number
- CN111197816B CN111197816B CN201811389670.1A CN201811389670A CN111197816B CN 111197816 B CN111197816 B CN 111197816B CN 201811389670 A CN201811389670 A CN 201811389670A CN 111197816 B CN111197816 B CN 111197816B
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- Prior art keywords
- heat exchanger
- centrifugal fan
- fan blade
- heat
- heat exchange
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- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
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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
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0059—Indoor units, e.g. fan coil units characterised by heat exchangers
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- 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
- F24F1/0018—Indoor units, e.g. fan coil units characterised by fans
- F24F1/0022—Centrifugal or radial fans
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- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Air-Conditioning Room Units, And Self-Contained Units In General (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention provides a heat exchange fan assembly and a heat exchanger, wherein the heat exchange fan assembly comprises: the centrifugal fan comprises centrifugal fan blades, and the diameter of each centrifugal fan blade is L2; the heat exchanger is arranged on the air inlet side of the centrifugal fan, the width of the heat exchanger is L1, and the width of the heat exchanger refers to the distance between two end points of the heat exchanger, which are close to the centrifugal fan blade, in the horizontal direction; and L2 is more than or equal to L1. The heat exchanger is completely positioned in a flow field driven by the centrifugal fan blade, the heat exchanger can fully exchange heat with air, and the heat exchange performance of the heat exchange fan component is good.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a heat exchange fan assembly and an air conditioner.
Background
In the rapid development of the household air conditioner industry, users pay more and more attention to the problem of air conditioner air supply comfort. To better solve the problem of air supply comfort, the performance of the air conditioner needs to be improved, and the capacity of the heat exchanger needs to be exerted to the maximum extent.
The prior art discloses an air conditioner indoor unit, which comprises a bottom shell, wherein at least two air channels are arranged on the bottom shell side by side; the air duct cover plate is matched with the bottom shell and covers the at least two air ducts, and a flow guide opening correspondingly communicated with each air duct is formed in the air duct cover plate; at least two centrifugal fans are respectively arranged in each air channel and are arranged opposite to the corresponding flow guide ports; the evaporator is arranged on one side, far away from the bottom shell, of the air duct cover plate, each flow guide opening is arranged opposite to the evaporator, and supporting ribs used for supporting the evaporator are arranged on one side, far away from the bottom shell, of the air duct cover plate.
In the prior art, the performance of the evaporator cannot be exerted to the maximum extent, and the performance of the air conditioner is not good.
Disclosure of Invention
Therefore, the technical problem to be solved by the present invention is to overcome the defect of poor performance of the air conditioner in the prior art, so as to provide a heat exchanging fan assembly and an air conditioner with good performance.
In order to solve the technical problem, the invention provides a heat exchange fan assembly, which comprises:
the centrifugal fan comprises centrifugal fan blades, and the diameter of each centrifugal fan blade is L2;
the heat exchanger is arranged on the air inlet side of the centrifugal fan, the width of the heat exchanger is L1, and the width of the heat exchanger refers to the distance of the heat exchanger in the direction parallel to the end part close to the centrifugal fan blade;
and L2 is more than or equal to L1.
The ratio of the width of the heat exchanger to the diameter of the centrifugal fan blade is A, and A is more than or equal to 0.8 and less than or equal to 1.
The heat exchanger is a bent heat exchanger, the surface of the heat exchanger close to the centrifugal fan blade is a concave surface, the width of the heat exchanger refers to the distance between two end points of the concave surface in the horizontal direction, the distance between the lowest point of the concave surface and the air inlet side of the centrifugal fan blade is L3, and L3 is more than L2.
The concave surface is a cambered surface.
The ratio of L2 to L3 is B, and B is more than or equal to 1.5 and less than or equal to 1.77.
The air inlet angle of the centrifugal fan blade is alpha, the alpha is more than or equal to 135 degrees and less than or equal to 145 degrees, and the alpha is the included angle between the two ends of the diameter of the end face of the centrifugal fan blade and the straight line from the two ends of the diameter to the center of the centrifugal fan blade.
The height of the heat exchanger covered by the centrifugal fan blade is L4, and L4 is 2 h [ L3 h tan (alpha/2) ].
The heat exchanger is an evaporator assembly.
The invention also provides an air conditioner which comprises the heat exchange fan component.
The technical scheme of the invention has the following advantages:
1. according to the heat exchange fan assembly, the diameter of the centrifugal fan blade is larger than the width of the heat exchanger, so that the heat exchanger is completely positioned in a flow field driven by the centrifugal fan blade, the heat exchanger can exchange heat with air fully, and the heat exchange performance of the heat exchange fan assembly is good.
2. According to the heat exchange fan assembly provided by the invention, the ratio of the width of the heat exchanger to the diameter of the centrifugal fan blade is A, and the requirement that A is more than or equal to 0.8 and less than or equal to 1 is met, so that the heat exchanger can be ensured to be capable of fully exchanging heat with air, and the heat exchange area of the heat exchanger can be ensured.
3. The heat exchanger is a bent heat exchanger, the surface of the heat exchanger close to the centrifugal fan blade is a concave surface, the width of the heat exchanger refers to the distance between two end points of the concave surface in the direction parallel to the end part of the centrifugal fan blade, the distance between the lowest point of the concave surface and the air inlet side of the centrifugal fan blade is L3, L3 is more than L2, the heat exchanger adopts the bent heat exchanger to increase the heat exchange area of the heat exchanger, and the arrangement of L3 is more than L2 can enable air to smoothly pass through the heat exchanger and ensure the optimal surface wind speed of the heat exchanger.
4. According to the heat exchange fan assembly provided by the invention, the concave surface is the cambered surface, so that air can smoothly pass through the heat exchanger.
5. According to the heat exchange fan assembly provided by the invention, the ratio of L2 to L3 is B, and B is more than or equal to 1.5 and less than or equal to 1.77, so that air can smoothly pass through the heat exchanger, and the optimal surface wind speed of the heat exchanger can be ensured.
6. According to the heat exchange fan assembly provided by the invention, the air inlet angle of the centrifugal fan blade is alpha, the angle alpha is more than or equal to 135 degrees and less than or equal to 145 degrees, and the angle alpha is an included angle between two ends of the diameter of the end face of the centrifugal fan blade and a straight line from the two ends to the center of the centrifugal fan blade, so that the effective heat exchange area of a heat exchanger is ensured.
7. The air conditioner provided by the invention comprises the heat exchange fan assembly, and the heat exchanger has better heat exchange performance and better performance.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a cross-sectional view of a heat exchange fan assembly provided in embodiment 1 of the present invention;
fig. 2 is a sectional view of a heat exchange fan assembly provided in embodiment 1 of the present invention;
fig. 3 is a side view of a heat exchanging fan assembly provided in embodiment 1 of the present invention.
Description of reference numerals:
1-centrifugal fan blades; 2-heat exchanger.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.
Furthermore, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Example 1
Fig. 1-3 show an embodiment of a heat exchanger assembly, which includes a centrifugal fan and a heat exchanger 2. The centrifugal fan comprises a centrifugal fan blade 1, and the diameter of the centrifugal fan blade 1 is L2; the heat exchanger 2 is arranged on the air inlet side of the centrifugal fan, the width of the heat exchanger 2 is L1, and in order to enable the heat exchanger 2 to be completely positioned in a flow field driven by the centrifugal fan blade 1 and enable the heat exchanger 2 to fully exchange heat with air, the requirement that L2 is more than or equal to L1 is met; the ratio of the width of the heat exchanger 2 to the diameter of the centrifugal fan blade 1 is A, and in order to ensure the heat exchange area of the heat exchanger 2, in the embodiment, A is more than or equal to 0.8 and less than or equal to 1. In this embodiment, in order to increase the contact area between the heat exchanger 2 and the air, the heat exchanger 2 is a bent heat exchanger, the surface of the heat exchanger 2 close to the centrifugal fan blade 1 is a concave surface, the width L1 of the heat exchanger 2 indicates the distance between two end points of the concave surface in the direction parallel to the end of the centrifugal fan blade 1, the distance between the lowest point of the concave surface and the air inlet side of the centrifugal fan blade 1 is L3, L3 is less than L2, and the ratio of L2 to L3 is B, so that the optimal surface air speed of the heat exchanger 2 can be ensured while the air can smoothly pass through the heat exchanger 2, and it is required that B is not less than 1.5 and not more than 1.77, and the concave surface is an arc surface. As shown in fig. 2, an air inlet angle of the centrifugal fan blade 1 is α, 135 ° or more and 145 ° or less, α is an included angle between two ends of a diameter of the end surface of the centrifugal fan blade 1 and a straight line from the two ends to the center of the centrifugal fan blade 1, so that an effective heat exchange area of the heat exchanger 2 is ensured, and since a height of the heat exchanger covered by the centrifugal fan blade is L4 and L4 is 2 × [ L3 × tan (α/2) ], a product of L4 and a width L1 of the heat exchanger 2 is an effective heat exchange area of the heat exchanger 2.
Specifically, when the air conditioner works, air enters between the heat exchanger 2 and the centrifugal fan blade 1, is sucked by the centrifugal fan after heat exchange through the heat exchanger 2, and is discharged from the upper end of the centrifugal fan. Because the ratio of the width of the heat exchanger 2 to the diameter of the centrifugal fan blade 1 satisfies 0.8-1, and the ratio of L2 to L3 satisfies 1.5-1.77, the centrifugal fan and the heat exchanger 2 cooperate to form an optimal wind field, so that the air and the heat exchanger 2 exchange heat uniformly, and the capacity of the heat exchanger 2 is fully exerted.
In an alternative embodiment, the heat exchanger 2 does not adopt a bent heat exchanger, and the width of the heat exchanger 2 refers to the distance between two end points of the heat exchanger 2 close to the centrifugal fan blade 1 in a direction parallel to the end of the centrifugal fan blade 1.
Example 2
The embodiment provides an air conditioner, including the heat transfer fan subassembly that above-mentioned embodiment provided, because the heat exchange performance of heat exchanger 2 is better, the performance of air conditioner is better.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (8)
1. A heat exchange fan assembly, comprising:
the centrifugal fan comprises a centrifugal fan blade (1), wherein the diameter of the centrifugal fan blade (1) is L2;
the heat exchanger (2) is arranged on the air inlet side of the centrifugal fan, the width of the heat exchanger (2) is L1, and the width of the heat exchanger (2) refers to the distance between two end points, close to the centrifugal fan blade (1), of the heat exchanger (2) in the direction parallel to the end part of the centrifugal fan blade (1);
and L2 is more than or equal to L1;
the heat exchanger (2) is a bent heat exchanger, the surface of the heat exchanger (2) close to the centrifugal fan blade (1) is a concave surface, the width of the heat exchanger (2) refers to the distance between two end points of the concave surface in the direction parallel to the end part of the centrifugal fan blade (1), the distance between the lowest point of the concave surface and the air inlet side of the centrifugal fan blade (1) is L3, and L3 is less than L2.
2. The heat-exchanging fan assembly of claim 1, wherein the ratio of the width of the heat exchanger (2) to the diameter of the centrifugal fan blade (1) is A, and satisfies 0.8 ≦ A ≦ 1.
3. The hot-exchange fan assembly of claim 1, wherein the concave surface is a curved surface.
4. The hot-air fan assembly of claim 1, wherein the ratio of L2 to L3 is B and satisfies 1.5 ≤ B ≤ 1.77.
5. The heat exchange fan assembly according to claim 1, wherein an air inlet angle of the centrifugal fan blade (1) is α, 135 ° or more and 145 ° or less, and α is an angle between two ends of a diameter at an end surface of the centrifugal fan blade (1) and a straight line from the center of the centrifugal fan blade (1).
6. A heat-exchanging fan assembly according to claim 5, characterised in that the heat exchanger (2) covered by the centrifugal fan blades (1) has a height L4, and L4 is 2 h [ L3 h tan (α/2) ].
7. A hot-exchange fan assembly according to any one of claims 1-6, characterized in that the heat exchanger (2) is an evaporator assembly.
8. An air conditioner comprising a heat exchange fan assembly as claimed in any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811389670.1A CN111197816B (en) | 2018-11-20 | 2018-11-20 | Heat exchange fan assembly and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811389670.1A CN111197816B (en) | 2018-11-20 | 2018-11-20 | Heat exchange fan assembly and air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111197816A CN111197816A (en) | 2020-05-26 |
| CN111197816B true CN111197816B (en) | 2022-07-19 |
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ID=70744248
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811389670.1A Active CN111197816B (en) | 2018-11-20 | 2018-11-20 | Heat exchange fan assembly and air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111197816B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2182382Y (en) * | 1993-04-13 | 1994-11-09 | 李宏军 | Secondary flow efficient heat-exchange bidirectional rebreather |
| US6142213A (en) * | 1997-11-25 | 2000-11-07 | Siemens Canada Limited | Ducted cooling system with radial-flow fan |
| JP2009257266A (en) * | 2008-04-19 | 2009-11-05 | Calsonic Kansei Corp | Fan shroud |
| CN107036166B (en) * | 2017-04-18 | 2020-02-04 | 青岛海尔空调器有限总公司 | Indoor unit of air conditioner |
| CN207225019U (en) * | 2017-08-22 | 2018-04-13 | 珠海格力电器股份有限公司 | Vehicle-mounted air conditioner and centrifugal fan mounting structure thereof |
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2018
- 2018-11-20 CN CN201811389670.1A patent/CN111197816B/en active Active
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| Publication number | Publication date |
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| CN111197816A (en) | 2020-05-26 |
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