CN107830658B - Heat exchanger, indoor unit and air conditioner - Google Patents
Heat exchanger, indoor unit and air conditioner Download PDFInfo
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- CN107830658B CN107830658B CN201711177936.1A CN201711177936A CN107830658B CN 107830658 B CN107830658 B CN 107830658B CN 201711177936 A CN201711177936 A CN 201711177936A CN 107830658 B CN107830658 B CN 107830658B
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- 239000003507 refrigerant Substances 0.000 claims abstract description 107
- 239000007788 liquid Substances 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000001704 evaporation Methods 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 230000001965 increasing effect Effects 0.000 description 3
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 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
- 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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
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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
- F25B2500/00—Problems to be solved
- F25B2500/09—Improving heat transfers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
- F28D2021/0068—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for refrigerant cycles
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses a heat exchanger, an indoor unit and an air conditioner, wherein the heat exchanger comprises a front heat exchange assembly and a rear heat exchange assembly, wherein the front heat exchange assembly comprises a first heat exchange tube group, a second heat exchange tube group and a third heat exchange tube group which are sequentially communicated and respectively comprise a plurality of front heat exchange tube groups and refrigerant circulation pipelines; the first heat exchange tube group and the third heat exchange tube group are positioned at the upper part of the front heat exchange assembly, the first heat exchange tube group is positioned at the windward side of the third heat exchange tube group, and the second heat exchange tube group is positioned at the lower part of the front heat exchange assembly; the rear heat exchange assembly comprises a fourth heat exchange tube group consisting of a plurality of rear heat exchange tube groups and a refrigerant circulation pipeline, a refrigerant inlet of the fourth heat exchange tube group is communicated with the first heat exchange tube group, and a refrigerant outlet of the fourth heat exchange tube group is communicated with the third heat exchange tube group; the refrigerant total inlet of the heat exchanger is positioned on the front heat exchange tube in the first heat exchange tube group, and the refrigerant total outlet of the heat exchanger is positioned on the front heat exchange tube in the third heat exchange tube group. The invention improves the structure of the heat exchanger and improves the overall heat exchange efficiency of the heat exchanger.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a heat exchanger, an air conditioner indoor unit and an air conditioner.
Background
In the prior art, an evaporator of an indoor unit of an air conditioner comprises a plurality of heat exchange tubes which are communicated with one another, and when the air conditioner is refrigerating, a refrigerant in the heat exchange tubes absorbs heat through evaporation so as to reduce the temperature of air flowing through the heat exchanger, thereby achieving the purpose of refrigerating.
However, according to the evaporation characteristic of the refrigerant in the heat exchange tube, a part of the heat exchange tube close to the refrigerant inlet is a liquid refrigerant, a part of the heat exchange tube far away from the refrigerant inlet is a gaseous refrigerant, and a part of the heat exchange tube in the middle is a gas-liquid two-phase refrigerant, wherein the heat exchange coefficient of the gas-liquid two-phase refrigerant is higher than that of the liquid refrigerant and that of the gaseous refrigerant. Therefore, the heat exchange efficiency of the heat exchange tube with the gas-liquid two-phase refrigerant is higher, and the heat exchange efficiency of the heat exchange tube with the liquid refrigerant or the gaseous refrigerant is lower, so that the heat exchange of the heat exchanger is not uniform, and the overall heat exchange efficiency of the heat exchanger is affected.
Disclosure of Invention
The invention mainly aims to provide a heat exchanger, which aims to improve the overall heat exchange efficiency of the heat exchanger.
In order to achieve the aim, the invention provides a heat exchanger which comprises a front heat exchange component and a rear heat exchange component which are arranged in an inverted V shape,
The front heat exchange assembly is provided with an upper part connected with the rear heat exchange assembly and a lower part far away from the upper part, and comprises a first heat exchange tube group, a second heat exchange tube group and a third heat exchange tube group which are respectively formed by a plurality of front heat exchange tube groups and are sequentially communicated with each other; the first heat exchange tube group and the third heat exchange tube group are positioned at the upper part of the front heat exchange assembly, the first heat exchange tube group is positioned at the windward side of the third heat exchange tube group, and the second heat exchange tube group is positioned at the lower part of the front heat exchange assembly;
The rear heat exchange assembly comprises a fourth heat exchange tube group consisting of a plurality of rear heat exchange tube groups and a refrigerant circulation pipeline, a refrigerant inlet of the fourth heat exchange tube group is communicated with a refrigerant outlet of the first heat exchange tube group, and a refrigerant outlet of the fourth heat exchange tube group is communicated with the third heat exchange tube group;
the refrigerant total inlet of the heat exchanger is positioned on the front heat exchange tube which forms the first heat exchange tube group, and the refrigerant total outlet of the heat exchanger is positioned on the front heat exchange tube which forms the third heat exchange tube group.
Preferably, the front heat exchange tubes on the front heat exchange assembly are divided into an inner row and an outer row from the leeward side to the windward side of the front heat exchange assembly, the outer row of the front heat exchange tubes are sequentially communicated from the upper part to the lower part of the front heat exchange assembly, and the inner row of the front heat exchange tubes are sequentially communicated from the upper part to the lower part of the front heat exchange assembly;
The lower part of the front heat exchange assembly is provided with a lower end far away from the upper part of the front heat exchange assembly, and two front heat exchange tubes positioned at the lower end of the front heat exchange assembly in the inner row and the outer row of the front heat exchange tubes are communicated with each other;
The outer row front heat exchange tubes positioned at the upper part of the front heat exchange assembly form the first heat exchange tube group, the inner row front heat exchange tubes positioned at the upper part of the front heat exchange assembly form the third heat exchange tube group, and the inner row front heat exchange tubes and the outer row front heat exchange tubes positioned at the lower part of the front heat exchange assembly form the second heat exchange tube group.
Preferably, the rear heat exchange assembly has an upper end connected with the front heat exchange assembly and a lower end far away from the upper end, the rear heat exchange tubes on the rear heat exchange assembly are divided into an inner row and an outer row from the leeward side to the windward side of the rear heat exchange assembly, the outer row of the rear heat exchange tubes is sequentially communicated from the upper end to the lower end of the rear heat exchange assembly, the inner row of the rear heat exchange tubes is sequentially communicated from the upper end to the lower end of the rear heat exchange assembly, and two rear heat exchange tubes positioned at the lower end of the rear heat exchange assembly in the inner row and the outer row of the rear heat exchange tubes are mutually communicated to form the fourth heat exchange tube group;
A rear heat exchange tube positioned at the upper end of the rear heat exchange assembly in the outer row of the rear heat exchange tubes is communicated with a refrigerant outlet of the first heat exchange tube group; and a rear heat exchange tube positioned at the upper end of the rear heat exchange assembly in the inner row is communicated with a refrigerant inlet of the third heat exchange tube group.
Preferably, the third heat exchange tube group has two refrigerant inlets and one refrigerant total outlet, one of the refrigerant inlets of the third heat exchange tube group is communicated with the refrigerant outlet of the second heat exchange tube group, the other refrigerant inlet of the third heat exchange tube group is communicated with the refrigerant outlet of the fourth heat exchange tube group, and the refrigerant total outlet is positioned between two adjacent front heat exchange tubes in the third heat exchange tube group.
Preferably, the lengths of the connecting midlines of two adjacent front heat exchange tubes in each row of the front heat exchange tubes are L1, the lengths of the connecting midlines of two adjacent rear heat exchange tubes in each row of the rear heat exchange tubes are L2, the lengths of the connecting midlines of two front heat exchange tubes, which are positioned at the lower end of the front heat exchange assembly, in the two rows of the front heat exchange tubes are L3, the lengths of the connecting midlines of two rear heat exchange tubes, which are positioned at the lower end of the rear heat exchange assembly, in the two rows of the rear heat exchange tubes are L4, wherein l1=l2=l3=l4, and L1 is more than or equal to 14mm and less than or equal to 17mm.
Preferably, the pipe diameter of the front heat exchange pipe constituting the first heat exchange pipe group is D1, the pipe diameter of the front heat exchange pipe constituting the second heat exchange pipe group is D2, the pipe diameter of the front heat exchange pipe constituting the third heat exchange pipe group is D3, and the pipe diameter of the rear heat exchange pipe constituting the fourth heat exchange pipe group is D4, wherein both D1 and D3 are larger than D2 and D4.
Preferably, the D1 and D2 satisfy: D1/D2 is more than or equal to 1.1 and less than or equal to 1.3;
the D1 and D4 satisfy: D1/D4 is more than or equal to 1.1 and less than or equal to 1.3;
The D2 and D3 satisfy: D3/D2 is more than or equal to 1.1 and less than or equal to 1.3;
the D3 and D4 satisfy: D3/D4 is more than or equal to 1.1 and less than or equal to 1.3.
Preferably, d1=d3, d2=d4.
Preferably, the number of front heat exchange tubes constituting the first heat exchange tube group is 6, the number of front heat exchange tubes constituting the second heat exchange tube group is 12, the number of front heat exchange tubes constituting the third heat exchange tube group is 4, and the number of inner and outer two rows of rear heat exchange tubes constituting the fourth heat exchange tube group is 6.
Preferably, the number of front heat exchange tubes constituting the first heat exchange tube group is 6, the number of front heat exchange tubes constituting the second heat exchange tube group is 10, the number of front heat exchange tubes constituting the third heat exchange tube group is 6, and the number of inner and outer rows of rear heat exchange tubes constituting the fourth heat exchange tube group is 6;
And the pipe diameters of two rear heat exchange pipes positioned at the upper end of the rear heat exchange assembly in the inner row of the rear heat exchange pipes are D5, and d5=d3.
The invention also provides an indoor unit which comprises the heat exchanger, wherein the heat exchanger comprises a front heat exchange component and a rear heat exchange component which are arranged in an inverted V shape,
The front heat exchange assembly is provided with an upper part connected with the rear heat exchange assembly and a lower part far away from the upper part, and comprises a first heat exchange tube group, a second heat exchange tube group and a third heat exchange tube group which are respectively formed by a plurality of front heat exchange tube groups and are sequentially communicated with each other; the first heat exchange tube group and the third heat exchange tube group are positioned at the upper part of the front heat exchange assembly, the first heat exchange tube group is positioned at the windward side of the third heat exchange tube group, and the second heat exchange tube group is positioned at the lower part of the front heat exchange assembly;
The rear heat exchange assembly comprises a fourth heat exchange tube group consisting of a plurality of rear heat exchange tube groups and a refrigerant circulation pipeline, a refrigerant inlet of the fourth heat exchange tube group is communicated with a refrigerant outlet of the first heat exchange tube group, and a refrigerant outlet of the fourth heat exchange tube group is communicated with the third heat exchange tube group;
the refrigerant total inlet of the heat exchanger is positioned on the front heat exchange tube which forms the first heat exchange tube group, and the refrigerant total outlet of the heat exchanger is positioned on the front heat exchange tube which forms the third heat exchange tube group.
The invention also provides an air conditioner which comprises an outdoor unit and the indoor unit.
The invention distributes the first heat exchange tube group with the refrigerant total inlet and the third heat exchange tube group with the refrigerant total outlet on the upper part of the front heat exchange assembly along the air flow direction, and respectively arranges the second heat exchange tube group and the fourth heat exchange tube group which are respectively communicated with the refrigerant outlet of the first heat exchange tube group on the lower part of the front heat exchange assembly and the rear heat exchange assembly, and respectively communicates the refrigerant outlet of the second heat exchange tube group and the refrigerant outlet of the fourth heat exchange tube group with the third heat exchange tube group. Therefore, when the air conditioner is used for refrigerating, the first heat exchange tube group with the liquid refrigerant and the third heat exchange tube group with the gaseous refrigerant exchange heat with air with a relatively high flow rate, and the second heat exchange tube group with the gas-liquid two-phase refrigerant and the fourth heat exchange tube group exchange heat with air with a relatively low flow rate, so that heat exchange of the heat exchanger is relatively uniform, and the overall heat exchange efficiency is relatively high.
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 heat exchanger according to an embodiment of the present invention;
fig. 2 is a schematic structural view of another embodiment of the heat exchanger of the present invention.
Reference numerals illustrate:
| Reference numerals | Name of the name | Reference numerals | Name of the name |
| 10 | Wind wheel | 26 | Refrigerant main inlet |
| 20 | Front heat exchange assembly | 27 | Refrigerant main outlet |
| 21 | Front fin | 30 | Rear heat exchange assembly |
| 22 | Front heat exchange tube | 31 | Rear fin |
| 23 | First heat exchange tube group | 32 | Rear heat exchange tube |
| 24 | Second heat exchange tube group | 33 | Fourth heat exchange tube group |
| 25 | Third heat exchange tube group |
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 any inventive effort, are intended to be within the scope of the invention.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present invention are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.
Furthermore, the description of "first," "second," etc. in this disclosure 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 heat exchanger.
Referring to fig. 1, in one embodiment, the heat exchanger according to the present invention includes a front heat exchange unit 20 and a rear heat exchange unit 30 disposed in an inverted V shape, the front heat exchange unit 20 having an upper portion connected to the rear heat exchange unit 30 and a lower portion remote from the upper portion, and the front heat exchange unit 20 further includes a first heat exchange tube group 23, a second heat exchange tube group 24 and a third heat exchange tube group 25 respectively constituting a refrigerant circulation line by a plurality of front heat exchange tubes 22, the first heat exchange tube group 23, the second heat exchange tube group 24 and the third heat exchange tube group 25 being sequentially communicated.
Wherein the first heat exchange tube group 23 and the third heat exchange tube group 25 are located at an upper portion of the front heat exchange assembly 20, the first heat exchange tube group 23 is located at a windward side of the third heat exchange tube group 25, and the second heat exchange tube group 24 is located at a lower portion of the front heat exchange assembly 20. And, the refrigerant total inlet 26 of the heat exchanger is located on the front heat exchange tube 22 constituting the first heat exchange tube group 23, and the refrigerant total outlet 27 of the heat exchanger is located on the front heat exchange tube 22 constituting the third heat exchange tube group 25.
In addition, the rear heat exchange unit 30 includes a fourth heat exchange tube group 33 having a refrigerant circulation line formed of a plurality of rear heat exchange tubes 32, the refrigerant inlet of the fourth heat exchange tube group 33 being in communication with the refrigerant outlet of the first heat exchange tube group 23, the refrigerant outlet of the fourth heat exchange tube group 33 being in communication with the third heat exchange tube group 25.
It will be appreciated that after the front heat exchange tubes 22 of the present heat exchange assembly 20 and the rear heat exchange tubes 32 of the rear heat exchange assembly 30 are distributed in the above manner, during the cooling process of the air conditioner, the refrigerant flows into the first heat exchange tube group 23 from the refrigerant main inlet 26 of the heat exchanger, then flows into the second heat exchange tube group 24 and the fourth heat exchange tube group 33, respectively, and finally merges in the third heat exchange tube group 25 and flows out through the refrigerant main outlet 27 of the heat exchanger. According to the evaporation characteristic of the refrigerant in the heat exchange tubes, at this time, the refrigerant in the first heat exchange tube group 23 is substantially liquid refrigerant, the refrigerant in the second heat exchange tube group 24 and the fourth heat exchange tube group 33 is substantially gas-liquid two-phase refrigerant, and the refrigerant in the third heat exchange tube group 25 is substantially gaseous refrigerant, and therefore, the refrigerant heat exchange coefficients of the second heat exchange tube group 24 and the fourth heat exchange tube group 33 are higher than those of the first heat exchange tube group 23 and the third heat exchange tube group 25.
It should be noted that, when the heat exchanger of the present embodiment is used in an indoor unit, the heat exchanger is mainly used in the indoor unit and is affected by the structure of the indoor unit, when the wind wheel 10 of the indoor unit is running, air flows from the windward side of the front heat exchange component 20 and the rear heat exchange component 30 (the side of the front heat exchange component 20 and the rear heat exchange component 30 facing away from the wind wheel 10) to the leeward side of the front heat exchange component 20 and the rear heat exchange component 30 (the side of the front heat exchange component 20 and the rear heat exchange component 30 facing the wind wheel 10), and the wind speed of the air flowing through the upper part of the heat exchanger is greater than the wind speed flowing through the lower part of the heat exchanger, that is, the speed of the air flowing through the first heat exchange tube group 23 and the third heat exchange tube group 25 is higher, so as to improve the heat exchange efficiency of the refrigerants in the first heat exchange tube group 23 and the third heat exchange tube group 25, so that the heat exchange of each part of the heat exchanger is more uniform, and the overall heat exchange efficiency of the heat exchanger is improved.
It should be noted that, when the air conditioner heats, the flow direction of the refrigerant in the heat exchanger is opposite to the flow direction of the refrigerant in the heat exchanger when the air conditioner refrigerates, which also can make the heat exchange of each part of the heat exchanger more uniform, so as to improve the overall heat exchange efficiency of the heat exchanger, and the description is omitted here.
In this embodiment, as shown in fig. 1, the front heat exchange tubes 22 on the front heat exchange assembly 20 may be divided into two rows from the leeward side to the windward side of the front heat exchange assembly 20, wherein the front heat exchange tubes 22 of the outer row are sequentially communicated from the upper portion to the lower portion of the front heat exchange assembly 20, the front heat exchange tubes 22 of the inner row are also sequentially communicated from the upper portion to the lower portion of the front heat exchange assembly 20, and the two front heat exchange tubes 22 located at the lower end of the front heat exchange assembly 20 in the two rows of the front heat exchange tubes 22 of the inner and outer rows are mutually communicated.
Then, the outer front heat exchange tube 22 at the upper part of the front heat exchange assembly 20 can be made to form a first heat exchange tube group 23, the inner front heat exchange tube 22 at the upper part of the front heat exchange assembly 20 is made to form a third heat exchange tube group 25, and the inner and outer front heat exchange tubes 22 at the lower part of the front heat exchange assembly 20 are made to form a second heat exchange tube group 24, so that the distribution of refrigerant circulation pipelines formed by the plurality of front heat exchange tubes 22 in the first heat exchange tube group 23, the second heat exchange tube group 24 and the third heat exchange tube group 25 is more reasonable, and the heat exchange efficiency of the front heat exchange assembly 20 is higher.
In addition, the rear heat exchange assembly 30 has an upper end connected with the front heat exchange assembly 20 and a lower end far from the upper portion thereof, in this embodiment, as shown in fig. 1, the rear heat exchange tubes 32 on the rear heat exchange assembly 30 may be divided into two inner and outer rows from the leeward side to the windward side of the rear heat exchange assembly 30, wherein the outer row of rear heat exchange tubes 32 are sequentially communicated from the upper end to the lower end of the rear heat exchange assembly 30, the inner row of rear heat exchange tubes 32 are also sequentially communicated from the upper end to the lower end of the rear heat exchange assembly 30, and two rear heat exchange tubes 32 located at the lower end of the rear heat exchange assembly 30 in the inner and outer two rows of rear heat exchange tubes 32 are mutually communicated to form a fourth heat exchange tube group 33. Accordingly, the distribution of the refrigerant flow lines formed by the plurality of rear heat exchange tubes 32 in the fourth heat exchange tube group 33 can be made more reasonable, and the heat exchange efficiency of the rear heat exchange unit 30 can be made higher.
The rear heat exchange tube 32 located at the upper end of the rear heat exchange assembly 30 in the outer-row rear heat exchange tube 32 is communicated with the refrigerant outlet of the first heat exchange tube group 23, and the rear heat exchange tube 32 located at the upper end of the rear heat exchange assembly 30 in the outer-row rear heat exchange tube 32 is communicated with the refrigerant inlet of the third heat exchange tube 25 group, so that the length of a connecting tube required for communicating the fourth heat exchange tube group 33 with the first heat exchange tube group 23 and the third heat exchange hanging group 25 respectively is reduced, and the production and manufacturing costs of the heat exchanger are reduced.
It should be noted that the plurality of front heat exchange tubes 22 on the front heat exchange tube assembly 20 may be arranged in the above manner, the plurality of rear heat exchange tubes 32 on the rear heat exchange tube assembly 30 may be arranged in the above manner, or the plurality of front heat exchange tubes 22 on the front heat exchange tube assembly 20 and the plurality of rear heat exchange tubes 32 on the rear heat exchange tube assembly 30 may be arranged in the above manner at the same time. Of course, the plurality of front heat exchange tubes 22 of the present heat exchange tube assembly 20 and the plurality of rear heat exchange tubes 32 of the rear heat exchange tube assembly 30 are simultaneously arranged in the above manner, and the overall heat exchange efficiency of the heat exchanger is higher.
In this embodiment, as shown in fig. 1, the third heat exchange tube group 25 may be provided with two refrigerant inlets and one refrigerant total outlet 27, one of the refrigerant inlets of the third heat exchange tube group 25 being in communication with the refrigerant outlet of the second heat exchange tube group 24, and the other of the refrigerant inlets of the third heat exchange tube group 25 being in communication with the refrigerant outlet of the fourth heat exchange tube group 33, thereby reducing the total length of connection tubes required for the connection of the third heat exchange tube group 25 to the second heat exchange tube group 24 and the fourth heat exchange tube group 33, respectively.
Wherein the refrigerant total outlet 27 may be located between the adjacent two front heat exchange tubes 22 constituting the third heat exchange tube group 25 so that the refrigerant evaporated to a gaseous state from the second heat exchange tube group 24 and the fourth heat exchange tube group 33 can flow into the third heat exchange tube group 25 and exchange heat with air at the upper portion of the front heat exchange assembly 20.
Of course, the third heat exchange tube group 25 may have one refrigerant inlet and one refrigerant total outlet 27, and both the refrigerant outlet of the second heat exchange tube group 24 and the refrigerant outlet of the fourth heat exchange tube group 33 may be connected to the same refrigerant inlet of the third heat exchange tube group 25.
When the plurality of front heat exchange tubes 22 in the first heat exchange tube group 23, the second heat exchange tube group 24, the third heat exchange tube group 25, and the plurality of rear heat exchange tubes 32 in the fourth heat exchange tube group 33 are simultaneously distributed in the above-described manner, as shown in fig. 1, the length of the connecting midline of two adjacent front heat exchange tubes 22 in each row of front heat exchange tubes 22 is L1, the length of the connecting midline of two adjacent rear heat exchange tubes 32 in each row of rear heat exchange tubes 32 is L2, the length of the connecting midline of two front heat exchange tubes 22 in the lower ends of the front heat exchange tube assemblies 20 in the two rows of front heat exchange tubes 22 is L3, and the length of the connecting midline of two rear heat exchange tubes 32 in the lower ends of the rear heat exchange tube assemblies 30 in the two rows of rear heat exchange tubes 32 is L4. In this embodiment, l1=l2=l3=l4 and l1.ltoreq.12mm.ltoreq.17mm may be used to make the distribution of the plurality of front heat exchange tubes 22 on the front heat exchange assembly 20 and the plurality of rear heat exchange tubes 32 on the rear heat exchange assembly 30 more uniform, so as to improve the overall heat exchange efficiency of the heat exchanger.
Of course, the plurality of front heat exchange tubes 22 in the first heat exchange tube group 23, the second heat exchange tube group 24 and the third heat exchange tube group 25, and the plurality of rear heat exchange tubes 32 in the fourth heat exchange tube group 33 may be distributed in other ways, depending on the structures of the front heat exchange assembly 20 and the rear heat exchange assembly 30. For example: the plurality of front heat exchange tubes 22 in the first heat exchange tube group 23, or the plurality of front heat exchange tubes 22 in the third heat exchange tube group 25 may be divided into inner and outer two rows from the leeward side to the windward side of the front heat exchange assembly 20, and the inner and outer two rows of front heat exchange tubes 22 may be communicated with each other.
On the basis of any of the above embodiments, as shown in fig. 1, the pipe diameter of the front heat exchange pipe 22 constituting the first heat exchange pipe group 23 is D1, the pipe diameter of the front heat exchange pipe 22 constituting the second heat exchange pipe group 24 is D2, the pipe diameter of the front heat exchange pipe 22 constituting the third heat exchange pipe group 25 is D3, and the pipe diameter of the rear heat exchange pipe 32 constituting the fourth heat exchange pipe group 33 is D4. In the present embodiment, D1 and D3 may be increased so that D1 and D3 are both larger than D2 and D4, thereby enhancing the heat exchange coefficients of the refrigerant in the first heat exchange tube group 23 and the third heat exchange tube group 25 to improve the heat exchange efficiency of the first heat exchange tube group 23 and the third heat exchange tube group 25.
Wherein, the degree of increase of D1 and D3 can be determined according to the number of the front heat exchange tubes 22 on the front heat exchange assembly 20, the wind speed flowing through each heat exchange tube group, and the like. For example: the increase of D1 to D1 and D2 may be such that: 1.1.ltoreq.D1/D2.ltoreq.1.3, and D1 and D4 satisfy: D1/D4 is more than or equal to 1.1 and less than or equal to 1.3; and increasing D3 to D2 and D3 satisfies: 1.1.ltoreq.D3/D2.ltoreq.1.3, and D3 and D4 satisfy: 1.1 is less than or equal to D3/D4 is less than or equal to 1.3, so that the reinforcement of the heat exchange coefficients of the refrigerants in the first heat exchange tube group 23 and the third heat exchange tube group 25 is more reasonable, and the heat exchange unevenness of the heat exchanger at each position caused by the excessively high or low reinforcement of the heat exchange coefficients of the refrigerants in the first heat exchange tube group 23 and the third heat exchange tube group 25 is avoided, and the overall heat exchange efficiency of the heat exchanger is reduced.
D1=d3 and d2=d4 may be used, or D1 and D3 may be different, or D2 and D4 may be different. Of course, when d1=d3 and d2=d4, the structures of the front heat exchange assembly 20 and the rear heat exchange assembly 30 can be simplified, and the overall production and manufacturing efficiency of the heat exchanger can be improved.
It should be noted that, when the pipe diameters of the front heat exchange pipes 22 on the current heat exchange assembly 20 and the lengths of the connecting central lines of the two adjacent front heat exchange pipes 22, and the pipe diameters of the rear heat exchange pipes 32 on the rear heat exchange assembly 30 and the lengths of the connecting central lines of the two adjacent rear heat exchange pipes 32 meet the above requirements at the same time, the overall heat exchange efficiency of the heat exchanger is improved better. For example: when l1=l2=l3=l4=17 mm, d1=d3, d2=d4, and d1/d2=1.1, the heat exchanger has a better overall heat exchange efficiency.
In the present embodiment, the number of the front heat exchange tubes 22 in the first heat exchange tube group 23, the second heat exchange tube group 24, and the third heat exchange tube group 25 may be determined according to the structure of the front heat exchange assembly 20, and the number of the rear heat exchange tubes 32 in the fourth heat exchange tube group 33 may be determined according to the structure of the rear heat exchange assembly 30. For example, as shown in FIG. 1, the number of the front heat exchange tubes 22 constituting the first heat exchange tube group 23 may be 6, the number of the front heat exchange tubes 22 constituting the second heat exchange tube group 24 may be 12, the number of the front heat exchange tubes 22 constituting the third heat exchange tube group 25 may be 4, and the number of the rear heat exchange tubes 32 of each row constituting the fourth heat exchange tube group 33 may be 6.
Alternatively, as shown in FIG. 2, the number of front heat exchange tubes 22 constituting the first heat exchange tube group 23 may be 6, the number of front heat exchange tubes 22 constituting the second heat exchange tube group 24 may be 10, the number of front heat exchange tubes 22 constituting the third heat exchange tube group 25 may be 6, and the number of rear heat exchange tubes 32 constituting the fourth heat exchange tube group 33 may be 6. Wherein, the pipe diameter D5 of two rear heat exchange pipes 32 positioned at the upper end of the rear heat exchange assembly 30 in the inner row of rear heat exchange pipes 32 can be increased, so that D5 is larger than D4, thereby enhancing the heat exchange coefficient of the refrigerant in the tail part of the fourth heat exchange pipe group 33 and improving the heat exchange efficiency. Wherein, D5 can be equal with D3, also can be unequal with D3, of course, when D3=D5, the overall structure of heat exchanger is simpler, and processing is more convenient.
On the basis of any of the above embodiments, as shown in fig. 1 and 2, the front heat exchange assembly 20 may further include a plurality of front fins 21 arranged side by side, and a plurality of front heat exchange tubes 22 are arranged on the plurality of front fins 21 in a penetrating manner, so as to further improve the heat exchange efficiency of the front heat exchange assembly 20. The rear heat exchange assembly 30 may further include a plurality of rear fins 31 disposed side by side, and a plurality of rear heat exchange tubes 32 are disposed through the plurality of rear fins 31, thereby further improving heat exchange efficiency of the rear heat exchange assembly 30.
The front fins 21 and the rear fins 31 may be arc-shaped, elongated, etc., and may be specifically determined according to the structure of the heat exchanger. Of course, when the front fin 21 is in an arc shape and the rear fin 31 is in a strip shape, the heat exchanger is more compact in cooperation with the wind wheel 10, and the volume of the indoor unit of the air conditioner can be reduced.
In addition, the front heat exchange tube 22 or the rear heat exchange tube 32 of the heat exchanger may have a straight tube structure or a U tube structure, which is not limited in this embodiment. When the front heat exchange tube 22 or the rear heat exchange tube 32 on the heat exchanger has a U-tube structure, each U-tube has two front heat exchange tubes 22 or rear heat exchange tubes 32.
The invention also provides an indoor unit and an air conditioner with the indoor unit, wherein the indoor unit comprises all schemes of all embodiments of the heat exchanger, and the schemes are not repeated here. It is to be understood that, since the air conditioner and the indoor unit of the air conditioner according to the present invention include all the solutions of all the embodiments of the heat exchanger, at least the same technical effects as those of the heat exchanger are achieved, which are not described herein.
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 (11)
1. An indoor unit comprises a wind wheel and a heat exchanger, wherein the heat exchanger comprises a front heat exchange component and a rear heat exchange component which are arranged in an inverted V shape,
The front heat exchange assembly is provided with an upper part connected with the rear heat exchange assembly and a lower part far away from the upper part, and comprises a first heat exchange tube group, a second heat exchange tube group and a third heat exchange tube group which are respectively formed by a plurality of front heat exchange tube groups and are sequentially communicated with each other; the first heat exchange tube group and the third heat exchange tube group are positioned at the upper part of the front heat exchange assembly, the first heat exchange tube group is positioned at the windward side of the third heat exchange tube group, and the second heat exchange tube group is positioned at the lower part of the front heat exchange assembly;
The rear heat exchange assembly comprises a fourth heat exchange tube group consisting of a plurality of rear heat exchange tube groups and a refrigerant circulation pipeline, a refrigerant inlet of the fourth heat exchange tube group is communicated with a refrigerant outlet of the first heat exchange tube group, and a refrigerant outlet of the fourth heat exchange tube group is communicated with the third heat exchange tube group;
the refrigerant total inlet of the heat exchanger is positioned on the front heat exchange tubes forming the first heat exchange tube group, and the refrigerant total outlet of the heat exchanger is positioned on the front heat exchange tubes forming the third heat exchange tube group;
When the wind wheel runs, air flows from one side of the front heat exchange assembly and the rear heat exchange assembly, which is away from the wind wheel, to one side of the front heat exchange assembly and the rear heat exchange assembly, which is facing the wind wheel.
2. The indoor unit of claim 1, wherein the front heat exchange tubes on the front heat exchange assembly are divided into two inner and outer rows from a leeward side to a windward side of the front heat exchange assembly, and the outer rows of the front heat exchange tubes are sequentially communicated from an upper portion to a lower portion of the front heat exchange assembly, and the inner rows of the front heat exchange tubes are sequentially communicated from the upper portion to the lower portion of the front heat exchange assembly;
The lower part of the front heat exchange assembly is provided with a lower end far away from the upper part of the front heat exchange assembly, and two front heat exchange tubes positioned at the lower end of the front heat exchange assembly in the inner row and the outer row of the front heat exchange tubes are communicated with each other;
The outer row front heat exchange tubes positioned at the upper part of the front heat exchange assembly form the first heat exchange tube group, the inner row front heat exchange tubes positioned at the upper part of the front heat exchange assembly form the third heat exchange tube group, and the inner row front heat exchange tubes and the outer row front heat exchange tubes positioned at the lower part of the front heat exchange assembly form the second heat exchange tube group.
3. The indoor unit of claim 2, wherein the rear heat exchange assembly has an upper end connected to the front heat exchange assembly and a lower end far from the upper end, the rear heat exchange tubes on the rear heat exchange assembly are divided into two inner and outer rows from the leeward side to the windward side of the rear heat exchange assembly, the rear heat exchange tubes on the outer row are sequentially communicated from the upper end to the lower end of the rear heat exchange assembly, the rear heat exchange tubes on the inner row are sequentially communicated from the upper end to the lower end of the rear heat exchange assembly, and two rear heat exchange tubes on the lower end of the rear heat exchange assembly in the inner and outer rows are mutually communicated to form the fourth heat exchange tube group;
A rear heat exchange tube positioned at the upper end of the rear heat exchange assembly in the outer row of the rear heat exchange tubes is communicated with a refrigerant outlet of the first heat exchange tube group; and a rear heat exchange tube positioned at the upper end of the rear heat exchange assembly in the inner row is communicated with a refrigerant inlet of the third heat exchange tube group.
4. The indoor unit of claim 3, wherein the third heat exchange tube group has two refrigerant inlets and one of the refrigerant total outlets, one of the refrigerant inlets of the third heat exchange tube group is communicated with the refrigerant outlet of the second heat exchange tube group, the other refrigerant inlet of the third heat exchange tube group is communicated with the refrigerant outlet of the fourth heat exchange tube group, and the refrigerant total outlet is located between two adjacent front heat exchange tubes constituting the third heat exchange tube group.
5. An indoor unit according to claim 3, wherein the length of the connecting center line of two adjacent front heat exchange tubes in each row of the front heat exchange tubes is L1, the length of the connecting center line of two adjacent rear heat exchange tubes in each row of the rear heat exchange tubes is L2, the length of the connecting center line of two front heat exchange tubes in the lower end of the front heat exchange assembly in the two rows of the front heat exchange tubes is L3, and the length of the connecting center line of two rear heat exchange tubes in the lower end of the rear heat exchange assembly in the two rows of the rear heat exchange tubes is L4, wherein l1=l2=l3=l4, and l1.ltoreq.l1 is 14 mm.
6. The indoor unit according to any one of claims 1 to 5, wherein the pipe diameter of the front heat exchange pipe constituting the first heat exchange pipe group is D1, the pipe diameter of the front heat exchange pipe constituting the second heat exchange pipe group is D2, the pipe diameter of the front heat exchange pipe constituting the third heat exchange pipe group is D3, and the pipe diameter of the rear heat exchange pipe constituting the fourth heat exchange pipe group is D4, wherein both of D1 and D3 are larger than D2 and D4.
7. The indoor unit of claim 6, wherein,
The D1 and D2 satisfy: D1/D2 is more than or equal to 1.1 and less than or equal to 1.3;
the D1 and D4 satisfy: D1/D4 is more than or equal to 1.1 and less than or equal to 1.3;
The D2 and D3 satisfy: D3/D2 is more than or equal to 1.1 and less than or equal to 1.3;
the D3 and D4 satisfy: D3/D4 is more than or equal to 1.1 and less than or equal to 1.3.
8. The indoor unit of claim 7, wherein d1=d3 and d2=d4.
9. The indoor unit of claim 6, wherein the number of front heat exchange tubes constituting the first heat exchange tube group is 6, the number of front heat exchange tubes constituting the second heat exchange tube group is 12, the number of front heat exchange tubes constituting the third heat exchange tube group is 4, and the number of rear heat exchange tubes constituting the fourth heat exchange tube group is 6.
10. The indoor unit of claim 6, wherein the number of front heat exchange tubes constituting the first heat exchange tube group is 6, the number of front heat exchange tubes constituting the second heat exchange tube group is 10, the number of front heat exchange tubes constituting the third heat exchange tube group is 6, and the number of inner and outer rows of rear heat exchange tubes constituting the fourth heat exchange tube group is 6;
and the pipe diameters of two rear heat exchange pipes positioned at the upper end of the rear heat exchange assembly in the inner row of the rear heat exchange pipes are D5, and d5=d3.
11. An air conditioner, characterized in that the air conditioner comprises an outdoor unit and an indoor unit according to any one of claims 1 to 10.
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| CN109282482B (en) * | 2018-09-03 | 2020-10-09 | 广东美的制冷设备有限公司 | Machine in heat exchanger subassembly and air conditioning |
| 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 |
| 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 |
| WO2024093167A1 (en) * | 2022-10-31 | 2024-05-10 | 邯郸美的制冷设备有限公司 | Heat exchange device and indoor air-conditioning unit |
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