CN107843029B - Indoor heat exchanger, air conditioner indoor unit and air conditioner - Google Patents
Indoor heat exchanger, air conditioner indoor unit and air conditioner Download PDFInfo
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- CN107843029B CN107843029B CN201711177728.1A CN201711177728A CN107843029B CN 107843029 B CN107843029 B CN 107843029B CN 201711177728 A CN201711177728 A CN 201711177728A CN 107843029 B CN107843029 B CN 107843029B
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- 239000003507 refrigerant Substances 0.000 claims description 57
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
Classifications
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- 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
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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
-
- 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)
- 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)
Abstract
The invention discloses an indoor heat exchanger, an air conditioner indoor unit and an air conditioner, wherein the indoor heat exchanger comprises a plurality of first heat exchange tubes and a plurality of second heat exchange tubes which are arranged side by side, and the tube diameter of the first heat exchange tubes is larger than that of the second heat exchange tubes; a plurality of first heat exchange tubes are sequentially connected in series to form a first heat exchange tube group; the plurality of second heat exchange tubes are divided into a plurality of second heat exchange tube groups, and all the second heat exchange tubes in each second heat exchange tube group are sequentially connected in series; the plurality of second heat exchange tube groups are connected in parallel to the first heat exchange tube group through respective second heat exchange tubes. According to the technical scheme, the heat exchange pipes of the indoor heat exchanger are provided with different pipe diameters, and the connection relation of the heat exchange pipes with different pipe diameters is reasonably set, so that the heat exchange efficiency of the indoor heat exchanger is integrally improved.
Description
Technical Field
The invention relates to the field of air conditioners, in particular to an indoor heat exchanger, an air conditioner indoor unit and an air conditioner.
Background
The indoor unit of the split air conditioner adopts the arc-shaped evaporator, can be well matched with the air duct, has great improvement on the heat exchange performance of the air conditioner and is relatively simple in assembly process, and more enterprises adopt the arc-shaped evaporator on the indoor unit. The existing indoor heat exchanger has single pipe diameter, and the arrangement and connection of the heat exchange pipes are reasonably carried out without combining the physical characteristics and the wind speed distribution of the refrigerant, so that the heat exchange efficiency of the indoor heat exchanger is low.
Disclosure of Invention
The invention mainly aims to provide an indoor heat exchanger, which aims to improve the heat exchange efficiency of the indoor heat exchanger.
In order to achieve the above-mentioned purpose, the present invention proposes an indoor heat exchanger, the indoor heat exchanger includes a plurality of first heat exchange tubes and a plurality of second heat exchange tubes arranged side by side, the tube diameter of the first heat exchange tube is greater than the tube diameter of the second heat exchange tube;
The plurality of first heat exchange tubes are sequentially connected in series to form a first heat exchange tube group; the plurality of second heat exchange tubes are divided into a plurality of second heat exchange tube groups, and all the second heat exchange tubes in each second heat exchange tube group are sequentially connected in series; a plurality of the second heat exchange tube groups are connected in parallel to the first heat exchange tube group through respective second heat exchange tubes;
The first heat exchange tube of the first heat exchange tube group far away from the second heat exchange tube group is provided with a first refrigerant port, and the second heat exchange tube group is provided with a second refrigerant port far away from the first heat exchange tube group.
Preferably, the indoor heat exchanger further comprises a plurality of third heat exchange tubes, and the tube diameter of the third heat exchange tubes is larger than that of the second heat exchange tubes; each second heat exchange tube group is formed by sequentially connecting a plurality of second heat exchange tubes in series and then sequentially connecting at least one third heat exchange tube in series, and the second refrigerant port is arranged on a third heat exchange tube far away from the second heat exchange tube in the second heat exchange tube group.
Preferably, the plurality of first heat exchange tubes, the plurality of second heat exchange tubes and the plurality of third heat exchange tubes are arranged into heat exchange tube rows from outside to inside; the first heat exchange tube provided with the first refrigerant port is positioned at the outermost row of the indoor heat exchanger; and the third heat exchange tube provided with the second refrigerant port is positioned at the innermost row of the indoor heat exchanger.
Preferably, the pipe diameter of the first heat exchange pipe is the same as the pipe diameter of the third heat exchange pipe.
Preferably, the distance between two adjacent first heat exchange tubes and the distance between the central lines of two adjacent third heat exchange tubes are 17-21 mm;
the distance between the adjacent first heat exchange tube and the second heat exchange tube and the distance between the adjacent third heat exchange tube and the second heat exchange tube are both 14 mm-18 mm;
The distance between two adjacent second heat exchange tubes is 14-18 mm.
Preferably, the pipe diameter ratio of the first heat exchange pipe to the second heat exchange pipe ranges from 1.1 to 1.4.
Preferably, the indoor heat exchanger comprises a front heat exchange part extending vertically and a rear heat exchange part extending backwards from the upper end of the front heat exchange part, and the upper end of the front heat exchange part is fixedly connected with the front end of the rear heat exchange part.
Preferably, the first heat exchange tube group is disposed at an outermost row of an upper end of the front heat exchange portion and/or an outermost row of a front end of the rear heat exchange portion.
The invention also provides an air conditioner indoor unit, which comprises an indoor heat exchanger, wherein the indoor heat exchanger comprises a plurality of first heat exchange pipes and a plurality of second heat exchange pipes which are arranged side by side, and the pipe diameter of the first heat exchange pipes is larger than that of the second heat exchange pipes;
The plurality of first heat exchange tubes are sequentially connected in series to form a first heat exchange tube group; the plurality of second heat exchange tubes are divided into a plurality of second heat exchange tube groups, and all the second heat exchange tubes in each second heat exchange tube group are sequentially connected in series; a plurality of the second heat exchange tube groups are connected in parallel to the first heat exchange tube group through respective second heat exchange tubes;
The first heat exchange tube of the first heat exchange tube group far away from the second heat exchange tube group is provided with a first refrigerant port, and the second heat exchange tube group is provided with a second refrigerant port far away from the first heat exchange tube group.
The invention also provides an air conditioner, which is characterized by comprising an air conditioner outdoor unit and an air conditioner indoor unit, wherein the air conditioner indoor unit comprises an indoor heat exchanger, the indoor heat exchanger comprises a plurality of first heat exchange pipes and a plurality of second heat exchange pipes which are arranged side by side, and the pipe diameter of the first heat exchange pipes is larger than that of the second heat exchange pipes;
The plurality of first heat exchange tubes are sequentially connected in series to form a first heat exchange tube group; the plurality of second heat exchange tubes are divided into a plurality of second heat exchange tube groups, and all the second heat exchange tubes in each second heat exchange tube group are sequentially connected in series; a plurality of the second heat exchange tube groups are connected in parallel to the first heat exchange tube group through respective second heat exchange tubes;
The first heat exchange tube of the first heat exchange tube group far away from the second heat exchange tube group is provided with a first refrigerant port, and the second heat exchange tube group is provided with a second refrigerant port far away from the first heat exchange tube group.
According to the technical scheme, the heat exchange tubes of the indoor heat exchanger are arranged to be a first heat exchange tube with a large tube diameter and a second heat exchange tube with a small tube diameter, a plurality of first heat exchange tubes form a first heat exchange tube group, the plurality of second heat exchange tubes are divided into a plurality of second heat exchange tube groups, and the second heat exchange tube groups are connected with the first heat exchange tube groups in parallel; the first heat exchange tube with large tube diameter increases the heat exchange area of the refrigerant exchanging heat with the air through the tube wall; the plurality of second heat exchange tube groups are connected in parallel, and a plurality of parallel refrigerant flow paths can be formed after the first heat exchange tube group, so that the refrigerant flowing out of the first heat exchange tube group can be separated and simultaneously flow through the plurality of parallel refrigerant flow paths, the refrigerant with the same coldness can exchange heat through the heat exchange tubes on the plurality of refrigerant flow paths, the heat exchange efficiency of the refrigerant with the same coldness is increased, and the heat exchange efficiency of the whole indoor heat exchanger is further increased.
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 a first embodiment of an indoor heat exchanger according to the present invention;
Fig. 2 is a schematic structural view of a second embodiment of an indoor heat exchanger according to the present invention.
Reference numerals illustrate:
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 an indoor heat exchanger, an air conditioner indoor unit and an air conditioner. The air conditioner comprises an air conditioner outdoor unit and the air conditioner indoor unit. The air conditioner indoor unit comprises a cross-flow fan, an air inlet, an air deflector, an air outlet, the indoor heat exchanger and the like. Indoor air firstly enters the air conditioner indoor unit from the air inlet, then enters the cross flow fan through the indoor heat exchanger, finally flows through the air deflector and flows out from the air outlet.
In the first embodiment of the present invention, as shown in fig. 1, the indoor heat exchanger 100 includes a plurality of fins 120, a plurality of first heat exchange tubes 111 and a plurality of second heat exchange tubes 112 arranged side by side, wherein the plurality of first heat exchange tubes 111 and the plurality of second heat exchange tubes 112 are disposed on the fins 120 in a penetrating manner, and the tube diameter of the first heat exchange tubes 111 is larger than the tube diameter of the second heat exchange tubes 112. It should be noted that, the first heat exchange tube 111, the second heat exchange tube 112, and the third heat exchange tube 113 described below refer to "U" shaped tubes, rather than straight tube sections of the U "shaped tubes.
The plurality of first heat exchange tubes 111 are sequentially connected in series to form a first heat exchange tube group 10; the second heat exchange tube 112 is divided into a plurality of second heat exchange tube groups 20, and all the second heat exchange tubes 112 in each of the second heat exchange tube groups 20 are connected in series in order. A plurality of the second heat exchange tube groups 20 are connected in parallel to the first heat exchange tube group 10 by respective second heat exchange tubes 112.
The first heat exchange tube 111 of the first heat exchange tube group 10, which is far from the second heat exchange tube group 20, is provided with a first refrigerant port 101, and the second heat exchange tube group 20 is provided with a second refrigerant port 201, which is far from the first heat exchange tube group 10.
Specifically, in the present embodiment, the indoor heat exchanger 100 further includes a third heat exchange tube 113, and the tube diameter of the third heat exchange tube 113 is larger than the tube diameter of the second heat exchange tube 112. Each of the second heat exchange tube groups 20 is formed by sequentially connecting a plurality of the second heat exchange tubes 112 in series and then sequentially connecting at least one of the third heat exchange tubes 113 in series. More specifically, the number of the second heat exchange tube groups 20 is 3, and each of the second heat exchange tube groups 20 includes 4 second heat exchange tubes 112 and 1 third heat exchange tube 113,8, where the second heat exchange tubes 112 are sequentially connected in series, and then sequentially connected in series with 2 third heat exchange tubes 113. The first heat exchange tube group 10 is connected to one branch pipe of one four-way pipe 114, and the other 3 branch pipes of the four-way pipe 114 are connected to 3 of the second heat exchange tube groups 20, thereby realizing that a plurality of the second heat exchange tube groups 20 are connected in parallel and then connected in series with the first heat exchange tube group 10. The second refrigerant port 201 is provided in the third heat exchange tube 113 of the second heat exchange tube group 20 remote from the second heat exchange tube 112. The first refrigerant port 101 and the second refrigerant port 201 are all connected to a four-way valve of an air conditioner through refrigerant pipes.
In the refrigeration working condition, as shown by the arrow in fig. 1, the direction of the refrigerant flow is the direction, the refrigerant enters the first heat exchange tube group 10 from the first refrigerant port 101 in the liquid state, and because the tube diameter of the first heat exchange tube 111 is larger than that of the second heat exchange tube 112, the heat exchange area of the refrigerant exchanging heat with air through the tube wall is also large, and the heat exchange efficiency of the refrigerant exchanging heat with air through the tube wall is improved. In addition, the large-diameter first heat exchange tube 111 can allow a large amount of refrigerant to flow into the indoor heat exchanger 100, so that the refrigerant flow in the second heat exchange tube group 20 is sufficient after the refrigerant enters the second heat exchange tube groups 20 through a plurality of refrigerant flow paths. Due to the plurality of second heat exchange tube groups 20, the refrigerants with the same coldness can exchange heat through the heat exchange tubes on the plurality of refrigerant flow paths at the same time, so that the heat exchange efficiency of the refrigerants with the same coldness is increased, and the heat exchange efficiency of the whole indoor heat exchanger 100 is further increased. Finally, the refrigerant flows through the third heat exchange tube 113 of the second heat exchange tube group 20, and flows out from the second refrigerant port 201. At this time, the temperature of the refrigerant is higher, the heat exchange capability is weak, and the pipe diameter of the third heat exchange pipe 113 is increased, so that the heat exchange area of the refrigerant passing through the pipe wall and exchanging heat with air is increased, and the heat exchange efficiency of the refrigerant passing through the pipe wall and exchanging heat with air is improved.
In the heating working condition, the indoor heat exchanger 100 in the present embodiment also has similar beneficial effects, and thus will not be described again.
According to the technical scheme, the heat exchange tubes of the indoor heat exchanger 100 are arranged into a first heat exchange tube 111 with a large tube diameter and a second heat exchange tube 112 with a small tube diameter, a plurality of first heat exchange tubes 111 form a first heat exchange tube group 10, the plurality of second heat exchange tubes 112 are divided into a plurality of second heat exchange tube groups 20, and the second heat exchange tube groups 20 are connected in parallel with the first heat exchange tube group 10; the first heat exchange tube 111 with a large tube diameter increases the heat exchange area of the refrigerant exchanging heat with the air through the tube wall; the plurality of second heat exchange tube groups 20 are connected in parallel, and a plurality of parallel refrigerant flow paths can be formed after the first heat exchange tube group 10, so that the refrigerant flowing out of the first heat exchange tube group 10 can be separated and simultaneously flow through the plurality of parallel refrigerant flow paths, and the refrigerant with the same cold degree can exchange heat through the heat exchange tubes on the plurality of refrigerant flow paths at the same time, thereby increasing the heat exchange efficiency of the refrigerant with the same cold degree and further increasing the heat exchange efficiency of the whole indoor heat exchanger 100.
In this embodiment, as shown in fig. 1, the plurality of first heat exchange tubes 111, the plurality of second heat exchange tubes 112 and the plurality of third heat exchange tubes 113 are arranged in a plurality of heat exchange tube rows from the outside to the inside. Specifically, in this embodiment, the heat exchange tube rows are arranged with 2 rows from the outside to the inside. In other embodiments, the heat exchange tube rows may be 3 rows, 4 rows, or the like. In order to facilitate connection of the refrigerant pipe with the first refrigerant port 101 and the second refrigerant port 201 when the air conditioner is assembled, the first heat exchange pipe 111 provided with the first refrigerant port 101 is located at the outermost row of the indoor heat exchanger 100, and the third heat exchange pipe 113 provided with the second refrigerant port 201 is located at the outermost row of the indoor heat exchanger 100. Specifically, in the present embodiment, 2 first heat exchange tubes 111 are provided, 3 third heat exchange tubes 113 are provided, 2 first heat exchange tubes 111 are all disposed in the outermost row of the indoor heat exchanger 100, and 3 third heat exchange tubes 113 are all disposed in the innermost row of the indoor heat exchanger 100. Further, in order to facilitate the connection between the first heat exchange tube group 10 and the second heat exchange tube group 20, the first heat exchange tube 111 connected to the branch pipe of the four-way pipe 114 is disposed at the outermost row of the indoor heat exchanger 100, and the second heat exchange tube 112 connected to the branch pipe of the four-way pipe 114 is disposed at the outermost row of the indoor heat exchanger 100.
In this embodiment, the pipe diameter of the first heat exchange pipe 111 is the same as the pipe diameter of the third heat exchange pipe 113. Because the pipe diameter of the first heat exchange pipe 111 is the same as the pipe diameter of the third heat exchange pipe 113, only the heat exchange pipes with two specifications and the heat exchange pipes with three pipe diameters are required to be produced when the indoor heat exchanger 100 is manufactured, thereby improving the production efficiency and saving the production cost. It can be understood that, in other embodiments, the pipe diameters of the first heat exchange pipe 111 and the third heat exchange pipe 113 may be different, which is only required to satisfy that the pipe diameters of the first heat exchange pipe 111 and the third heat exchange pipe 113 are both larger than the pipe diameter of the second heat exchange pipe.
In order to maximize the heat exchange efficiency of the indoor heat exchanger 100, the space between the heat exchange tubes needs to be reasonably designed corresponding to the tube diameters of the different heat exchange tubes. In this embodiment, the pipe diameters of the first heat exchange pipe 111 and the third heat exchange pipe 113 are 7mm, and the pipe diameter of the second heat exchange pipe 112 is 5mm. Correspondingly, the distance between two adjacent first heat exchange tubes 111 and the distance between two adjacent third heat exchange tubes 113 are 17 mm-21 mm; the distance between the adjacent first heat exchange tube 111 and the second heat exchange tube 112 and the distance between the adjacent third heat exchange tube 113 and the second heat exchange tube 112 are both 14 mm-18 mm; the distance between two adjacent second heat exchange tubes 112 is in the range of 14mm to 18mm. So arranged, the indoor heat exchanger 100 has high heat exchange efficiency.
In addition, the heat exchange effect of the indoor heat exchanger can be influenced by the ratio of the pipe diameters of different heat exchange pipes. In this embodiment, when the ratio of the tube diameters of the first heat exchange tube 111 and the second heat exchange tube 112 ranges from 1.1 to 1.4, the heat exchange effect of the indoor heat exchanger 100 is better.
In this embodiment, the indoor heat exchanger 100 includes a front heat exchanging part 200 extending in a vertical direction and a rear heat exchanging part 300 extending rearward from an upper end of the front heat exchanging part 200, wherein the front heat exchanging part 200 is close to a front panel of the air conditioner, and the rear heat exchanging part 300 is away from the front panel of the air conditioner. The upper end of the front heat exchanging part 200 is fixedly connected with the front end of the rear heat exchanging part 300. The indoor heat exchanger 100 is divided into the front heat exchange part 200 and the rear heat exchange part 300, and when the indoor heat exchanger 100 is assembled, the angles of the front heat exchange part 200 and the rear heat exchange part 300 can be properly adjusted to adapt to the shape of the cross-flow fan and be well matched with the air duct. To further adapt to the shape of the cross-flow fan, and to better match with the air duct, the front heat exchanging portion 200 is preferably disposed in a convex arc shape, and/or the rear heat exchanging portion 300 is preferably disposed in a convex arc shape.
In the present embodiment, the first heat exchange tube group 10 is disposed at the outermost row of the upper end of the front heat exchange portion 200 and/or at the outermost row of the front end of the rear heat exchange portion 300. Specifically, in the present embodiment, as shown in fig. 1, 1 of 2 first heat exchange tubes 111 is disposed at the outermost row at the upper end of the front heat exchange portion 200, and the remaining 1 is disposed at the outermost row at the front end of the rear heat exchange portion 300. Since the wind velocity of the wind flowing through the outermost rows of the upper end of the front heat exchange portion 200 and the front end of the rear heat exchange portion 300 is highest, the heat exchange efficiency of the first heat exchange tube group 10 increases at a high wind velocity by disposing the first heat exchange tube group 10 at the outermost row of the upper end of the front heat exchange portion 200 and/or the outermost row of the front end of the rear heat exchange portion 300. In addition, since the first heat exchange pipe 113 has a larger pipe diameter, the resistance of the heat exchange pipe to the wind flowing therethrough can be increased, so that the wind speed of the wind flowing through each portion of the indoor heat exchanger 100 can be more uniform.
As shown in fig. 2, a second embodiment of the present invention is shown. The structure of the indoor heat exchanger 100 of the second embodiment is substantially the same as that of the indoor heat exchanger 100 of the first embodiment, and the main difference between the second embodiment and the first embodiment is that the arrangement positions of the second heat exchange tube 112 and the third heat exchange tube 113 in the second heat exchange tube group 20 at the lower end of the front heat exchange portion 200 are different.
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 indoor heat exchanger is characterized by comprising a plurality of first heat exchange pipes and a plurality of second heat exchange pipes which are arranged side by side, wherein the pipe diameter of the first heat exchange pipes is larger than that of the second heat exchange pipes;
The plurality of first heat exchange tubes are sequentially connected in series to form a first heat exchange tube group; the plurality of second heat exchange tubes are divided into a plurality of second heat exchange tube groups, and all the second heat exchange tubes in each second heat exchange tube group are sequentially connected in series; a plurality of the second heat exchange tube groups are connected in parallel to the first heat exchange tube group through respective second heat exchange tubes;
a first refrigerant port is formed in a first heat exchange tube far away from the second heat exchange tube group in the first heat exchange tube group, and a second refrigerant port far away from the first heat exchange tube group is formed in the second heat exchange tube group;
The indoor heat exchanger further comprises a plurality of third heat exchange tubes, and the tube diameter of each third heat exchange tube is larger than that of each second heat exchange tube; each second heat exchange tube group is formed by sequentially connecting a plurality of second heat exchange tubes in series and then sequentially connecting at least one third heat exchange tube in series, and a second refrigerant port is arranged on a third heat exchange tube far away from the second heat exchange tube in the second heat exchange tube group;
the distance between the adjacent first heat exchange tube and the second heat exchange tube and the distance between the adjacent third heat exchange tube and the second heat exchange tube are both 14 mm-18 mm;
The indoor heat exchanger is divided into a front heat exchange part extending vertically and a rear heat exchange part extending backwards from the upper end of the front heat exchange part, and the upper end of the front heat exchange part is fixedly connected with the front end of the rear heat exchange part; the front heat exchange part is arranged in a forward protruding arc shape, and the rear heat exchange part is arranged in an upward protruding arc shape; the plurality of first heat exchange tubes, the plurality of second heat exchange tubes and the plurality of third heat exchange tubes are arranged into heat exchange tube rows from outside to inside, and the third heat exchange tubes provided with the second refrigerant ports are positioned in the innermost row of the indoor heat exchanger; the first heat exchange tube group is connected with one branch tube of a four-way tube, and the other 3 branch tubes of the four-way tube are connected with 3 second heat exchange tube groups; the first heat exchange tube connected with the branch tube of the four-way tube is arranged at the outermost row of the indoor heat exchanger, and the second heat exchange tube connected with the branch tube of the four-way tube is arranged at the outermost row of the indoor heat exchanger.
2. The indoor heat exchanger according to claim 1, wherein the first heat exchange tube provided with the first refrigerant port is located at an outermost row of the indoor heat exchanger.
3. The indoor heat exchanger according to claim 1, wherein the pipe diameter of the first heat exchange pipe is the same as the pipe diameter of the third heat exchange pipe.
4. The indoor heat exchanger according to claim 3, wherein the distance between two adjacent first heat exchange tubes and the distance between two adjacent third heat exchange tubes are 17mm to 21mm;
The distance between two adjacent second heat exchange tubes is 14-18 mm.
5. The indoor heat exchanger according to claim 1, wherein the ratio of the pipe diameters of the first heat exchange pipe and the second heat exchange pipe ranges from 1.1 to 1.4.
6. The indoor heat exchanger according to claim 1, wherein the first heat exchange tube group is provided at an outermost row of an upper end of the front heat exchange portion and/or an outermost row of a front end of the rear heat exchange portion.
7. An indoor unit for an air conditioner, comprising the indoor heat exchanger according to any one of claims 1 to 6.
8. An air conditioner comprising an air conditioner outdoor unit and the air conditioner indoor unit according to claim 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711177728.1A CN107843029B (en) | 2017-11-22 | 2017-11-22 | Indoor heat exchanger, air conditioner indoor unit and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711177728.1A CN107843029B (en) | 2017-11-22 | 2017-11-22 | Indoor heat exchanger, air conditioner indoor unit and air conditioner |
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| Publication Number | Publication Date |
|---|---|
| CN107843029A CN107843029A (en) | 2018-03-27 |
| CN107843029B true CN107843029B (en) | 2024-04-30 |
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| CN201711177728.1A Active CN107843029B (en) | 2017-11-22 | 2017-11-22 | Indoor heat exchanger, air conditioner indoor unit and air conditioner |
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| WO2020047927A1 (en) * | 2018-09-03 | 2020-03-12 | 广东美的制冷设备有限公司 | Heat exchanger assembly and air conditioner indoor unit |
| CN109269071B (en) * | 2018-09-03 | 2020-04-21 | 广东美的制冷设备有限公司 | Machine in heat exchanger subassembly and air conditioning |
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| CN204555271U (en) * | 2015-01-26 | 2015-08-12 | 广东美的制冷设备有限公司 | Arc heat exchanger and indoor apparatus of air conditioner |
| CN205690760U (en) * | 2016-06-01 | 2016-11-16 | 广东美的制冷设备有限公司 | Air-conditioning heat exchanger and wall-hanging air conditioner indoor unit |
| CN106403394A (en) * | 2016-11-29 | 2017-02-15 | 美的集团武汉制冷设备有限公司 | Pipe of evaporator, evaporator and air conditioner |
| CN106595020A (en) * | 2016-11-29 | 2017-04-26 | 美的集团武汉制冷设备有限公司 | Heat exchange fin, multi-fold heat exchanger and air conditioner |
| CN206247712U (en) * | 2016-11-29 | 2017-06-13 | 美的集团武汉制冷设备有限公司 | Multi-bended heat exchanger, indoor set and air-conditioner |
| CN207438860U (en) * | 2017-11-22 | 2018-06-01 | 广东美的制冷设备有限公司 | Indoor heat exchanger, air conditioner indoor unit and air conditioner |
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