CN114688635A - Heat exchanger, air condensing units and air conditioner - Google Patents
Heat exchanger, air condensing units and air conditioner Download PDFInfo
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- CN114688635A CN114688635A CN202011644162.0A CN202011644162A CN114688635A CN 114688635 A CN114688635 A CN 114688635A CN 202011644162 A CN202011644162 A CN 202011644162A CN 114688635 A CN114688635 A CN 114688635A
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- 239000003507 refrigerant Substances 0.000 claims abstract description 76
- 238000004891 communication Methods 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 235000015221 Bupleurum rotundifolium Nutrition 0.000 description 1
- 244000236521 Bupleurum rotundifolium Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000005514 two-phase flow Effects 0.000 description 1
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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
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/14—Heat exchangers specially adapted for separate outdoor units
- F24F1/16—Arrangement or mounting thereof
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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
Abstract
The invention discloses a heat exchanger, an air conditioner outdoor unit and an air conditioner, wherein the heat exchanger comprises fins and heat exchange tubes penetrating the fins, the heat exchange tubes comprise a first heat exchange tube group and a second heat exchange tube group, a primary shunt tube group is formed on the first heat exchange tube group, a second tube group and a secondary shunt tube group are formed on the second heat exchange tube group, a refrigerant is shunted into the primary shunt tube group through a shunt capillary tube after entering from the second tube group, the uniformity of the refrigerant is improved, the primary shunt tube group is communicated with the secondary shunt tube group, the refrigerant is further shunted through the secondary shunt tube group, the refrigerant is fully subjected to heat exchange in the heat exchange tubes, and the heat exchange efficiency of the refrigerant is improved.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a heat exchanger, an air conditioner outdoor unit and an air conditioner.
Background
The heat exchanger of the existing outdoor air conditioner unit is generally composed of 1-3 rows of finned tubes, a gas refrigerant outlet is a flute tube, a gas-liquid two-phase refrigerant inlet is a porous flow divider, the pipe diameters of flow dividing pipes of two-phase refrigerants passing through the flow divider are generally consistent, the flow difference of different branch refrigerants is not considered, an inlet flow dividing branch is generally a common three-way pipe, the inlet flow difference and the pipeline pressure loss difference are ignored, and therefore the heat exchange efficiency of the heat exchanger of the existing outdoor air conditioner unit is low.
Disclosure of Invention
The invention mainly aims to provide a heat exchanger, aiming at improving the heat exchange efficiency of an air conditioner heat exchanger.
In order to achieve the above object, the present invention provides a heat exchanger, which includes a fin and a heat exchange tube penetrating through the fin, wherein the heat exchange tube includes:
the refrigerant flows into the heat exchanger from the first interface when the heat exchanger is used as a condenser, and flows out of the heat exchanger from the first interface when the heat exchanger is used as an evaporator;
the second interface is used for enabling the refrigerant to flow out of the heat exchanger from the second interface when the heat exchanger is used as a condenser, and enabling the refrigerant to flow into the heat exchanger from the second interface when the heat exchanger is used as an evaporator;
the first heat exchange tube group comprises a plurality of first-stage shunt tube groups and a plurality of first tube groups;
the second heat exchange tube group is arranged in parallel with the first heat exchange tube group and comprises a second tube group and a plurality of secondary flow dividing tube groups, and one end of the second tube group is communicated with the first interface;
the flow dividing capillary tube is provided with a first port and a plurality of second ports, the first port is communicated with the other end of the second tube group, and the second ports are respectively communicated with one ends of the first-stage flow dividing tube groups; and
a manifold in communication with the second port,
the other end of each first-stage shunt pipe group is communicated with one end of each second-stage shunt pipe group, the other ends of the second-stage shunt pipe groups are communicated with one ends of the first pipe groups respectively, and the other ends of the first pipe groups are communicated with the collecting pipe.
In one embodiment, the second heat exchange tube group is arranged on the air inlet side of the first heat exchange tube group, and the tube diameter of the first heat exchange tube group is larger than that of the second heat exchange tube group.
In an embodiment, the heat exchanger further includes a third heat exchange tube group, and the third heat exchange tube group is arranged side by side with the first heat exchange tube group and the second heat exchange tube group;
the first heat exchange tube group is positioned between the second heat exchange tube group and the third heat exchange tube group, and the pipe diameter of the first heat exchange tube group is smaller than that of the third heat exchange tube group;
the third heat exchange tube group includes a plurality of third nest of tubes and a plurality of fourth nest of tubes, a plurality of one-level shunt nest of tubes the other end respectively with the one end intercommunication of a plurality of fourth nest of tubes, every the other end and a plurality of the one end intercommunication of second grade shunt nest of tubes, a plurality of first nest of tubes the other end respectively with the one end intercommunication of a plurality of third nest of tubes, a plurality of third nest of tubes the other end with converge the pipe intercommunication.
In one embodiment, the heat exchanger further comprises:
the shunt comprises a third port and a plurality of fourth ports, the third port is communicated with the other ends of the plurality of fourth pipe groups, and the plurality of fourth ports are respectively communicated with one ends of the plurality of second-stage shunt pipe groups.
In one embodiment, the primary flow-dividing tube group and the flow divider are both two.
In an embodiment, the second heat exchange tube set, the first heat exchange tube set, and the third heat exchange tube set are arranged in a staggered manner in an air outlet direction.
In an embodiment, the pipe diameter of the second heat exchange pipe set is 5.5-6.5 mm, the pipe diameter of the first heat exchange pipe set is 6.5-7.5 mm, and the pipe diameter of the third heat exchange pipe set is 7.5-8.5 mm.
In an embodiment, the pipe diameter of the second heat exchange pipe set is 6.35mm, the pipe diameter of the first heat exchange pipe set is 7mm, and the pipe diameter of the third heat exchange pipe set is 8 mm.
In one embodiment, the heat exchange tube comprises a straight tube section and a bent tube section connected with the straight tube section, and the length of the straight tube section is 500-1200 mm.
In one embodiment, the manifold is a flute-shaped tube.
The invention also provides an air conditioner outdoor unit which comprises a case and the heat exchanger, wherein the heat exchanger is arranged in the case.
The invention also provides an air conditioner which comprises the air conditioner outdoor unit.
According to the technical scheme, the first heat exchange tube group and the second heat exchange tube group are arranged, the first shunt tube group is formed on the first heat exchange tube group, the second tube group and the second shunt tube group are formed on the second heat exchange tube group, the refrigerant is shunted to the first shunt tube group through the shunt capillary tube after entering from the second tube group, the uniformity of the refrigerant is improved, the first shunt tube group is communicated with the second shunt tube group, the refrigerant is further shunted through the second shunt tube group, the refrigerant is enabled to fully exchange heat in the heat exchange tubes, and the heat exchange efficiency of the refrigerant is improved.
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, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic view of the overall construction of a heat exchanger according to the present invention;
FIG. 2 is a schematic view of a portion of the heat exchanger of the present invention;
FIG. 3 is another schematic structural view of a portion of the heat exchanger of the present invention;
fig. 4 is another partial structural schematic diagram of the heat exchanger of the present invention.
The reference numbers illustrate:
the implementation, functional features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, and the like in a specific posture, and if the specific posture is changed, the directional indicator is changed accordingly.
In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, the descriptions related to "first", "second", "third", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of the feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The invention provides a heat exchanger which is high in heat exchange efficiency and can fully utilize a refrigerant for heat exchange.
Referring to fig. 1 to 4, fig. 1 is a schematic view of an overall structure of a heat exchanger according to the present invention; FIG. 2 is a schematic view of a portion of the heat exchanger of the present invention; FIG. 3 is another schematic structural view of a portion of the heat exchanger of the present invention; fig. 4 is another partial structural schematic diagram of the heat exchanger of the present invention.
In an embodiment of the present invention, please refer to fig. 1, a heat exchanger 1000 is provided, where the heat exchanger 1000 includes a fin and a heat exchange tube 100 penetrating through the fin, and the heat exchange tube 100 includes: a first port 71 through which a refrigerant flows into the heat exchanger 1000 when the heat exchanger 1000 is used as a condenser, and through which the refrigerant flows out of the heat exchanger 71 when the heat exchanger 1000 is used as an evaporator; a second port 72 through which a refrigerant flows out of the heat exchanger 1000 from the second port 72 when the heat exchanger 1000 is used as a condenser, and through which the refrigerant flows into the heat exchanger 1000 from the second port 72 when the heat exchanger 1000 is used as an evaporator; a first heat exchange tube bank 10, said first heat exchange tube bank 10 comprising a plurality of primary manifold banks 12 and a plurality of first bank 14; a second heat exchange tube bank 20, arranged alongside said first heat exchange tube bank 10, comprising a second tube bank 22 and a plurality of secondary flow-dividing tube banks 24; a flow-dividing capillary tube 40 having a first port 42 and a plurality of second ports 44, the first port 42 communicating with the other end of the second tube group 22, and the plurality of second ports 44 communicating with one ends of the plurality of primary flow-dividing tube groups 12, respectively; and a manifold 50, the manifold 50 being in communication with the second port 72, wherein the other end of each of the primary shunt tube groups 12 is in communication with one end of a plurality of the secondary shunt tube groups 24, the other ends of the plurality of secondary shunt tube groups 24 are in communication with one end of the plurality of first tube groups 14, and the other ends of the plurality of first tube groups 14 are in communication with the manifold 50.
Specifically, the heat exchanger 1000 includes fins (not shown in the drawings) and a heat exchange tube 100, wherein a refrigerant flows through the heat exchange tube 100, the heat exchange tube 100 is used for absorbing heat, and the fins are used for dissipating heat. The heat exchanger 1000 is provided with a plurality of heat exchange tubes 100, so that the heat absorption and heat dissipation effects of the heat exchanger are the best. More specifically, the heat exchange tube 100 includes two straight tube sections and a bent tube section connecting the straight tube sections, the straight tube sections penetrate through the fins, the bent tube ends are disposed at two ends of the fins, and the heat exchange tube 100 needs to have a refrigerant input and output port to ensure circulation of the refrigerant in the heat exchange tube 100.
Specifically, referring to fig. 1 and 2, at least a portion of the heat exchange tubes 100 of the first heat exchange tube group 10 form a first bypass tube group 12, and the first bypass tube group 12 has at least two branches to perform the function of bypassing the refrigerant. The first-stage flow dividing tube group 12 may be composed of one heat exchange tube 100, or may be composed of two or three heat exchange tubes 100, which is not limited herein. In the embodiment of the present invention, the first-stage bypass pipe group 12 has two branches, including a branch formed by one heat exchange pipe 100 and a branch formed by two heat exchange pipes 100.
Specifically, referring to fig. 1, 3 and 4, the first tube bank 14 is composed of heat exchange tubes 100 of the first heat exchange tube bank 10 excluding the first divided tube bank 12, the first tube bank 14 having an inlet for communicating with the second heat exchange tube bank 20 and an outlet for communicating with the third heat exchange tube bank 30, respectively. The first tube group 14 may be composed of one or more heat exchange tubes 100, for example, may be composed of one heat exchange tube 100, may be composed of two heat exchange tubes 100, or may be composed of three heat exchange tubes 100, and is not limited herein. The first tube group 14 having two heat exchange tubes 100 is shown by way of example only in fig. 1, and it will be understood that the first tube group 14 shown in fig. 1 includes, in order from top to bottom, the first tube group 14 having one heat exchange tube 100, two heat exchange tubes 100, one heat exchange tube 100, two heat exchange tubes 100, and one heat exchange tube 100.
Specifically, referring to fig. 1 and 2, the second heat exchange tube group 20 includes a second tube group 22 and a two-stage flow dividing tube group 24, the second tube group 22 is formed by at least part of the heat exchange tubes 100 of the second heat exchange tube group 20, the second tube group 22 can be formed by one or more heat exchange tubes 100, and in the embodiment of the present invention, the second tube group 22 is formed by two heat exchange tubes 100 of the second heat exchange tube group 20. The refrigerant flows into the heat exchanger 1000 from the second tube group 22, and the refrigerant is not branched in the second tube group 22, and the second tube group 22 is disposed in the second heat exchange tube group 20, instead of separately disposing a refrigerant inlet tube outside the heat exchange tube 100, so that the volume of the heat exchanger 1000 can be reduced, and the structure thereof can be more compact.
Specifically, referring to fig. 1, 3 and 4, the secondary flow-dividing tube group 24 is composed of heat exchange tubes 100 excluding the second tube group 22 from the second heat exchange tube group 20, the other end of the secondary flow-dividing tube group 24 is communicated with one end of the first tube group 14, and one end of the secondary flow-dividing tube group 24 is communicated with the other end of the primary flow-dividing tube group 12. The secondary flow-dividing tube group 24 can be constructed of one or more heat exchange tubes 100, for example, the secondary flow-dividing tube group 24 exemplarily illustrated in fig. 1 is constructed of two heat exchange tubes 100. It is understood that, according to the definition of the above-mentioned two-stage flow-dividing tube group 24, in the embodiment of the present invention, the two-stage flow-dividing tube group 24 comprises, from top to bottom, two heat exchange tubes 100, one heat exchange tube 100, two heat exchange tubes 100, and two heat exchange tubes 100.
Specifically, referring to fig. 1 and 2, a diversion capillary tube 40 is disposed between the second tube group 22 and the first-stage diversion tube group 12, a first port 42 of the diversion capillary tube 40 is communicated with the other end of the second tube group 22, and a plurality of second ports 44 of the diversion capillary tube 40 are respectively communicated with one end of the plurality of first-stage diversion tube groups 12, so that the refrigerant flowing through the second tube group 22 is diverted into the first-stage diversion tube group 12 through the diversion capillary tube 40, thereby improving uniformity of the refrigerant. It is understood that in the embodiment of the present invention, the number of the first-stage shunt tube group 12 is two, and correspondingly, the number of the second ports 44 of the shunt capillary tubes 40 is also two, and in other embodiments, the number of the first-stage shunt tube group 12 and the number of the second ports 44 of the shunt capillary tubes 40 may be other, and the design depends on the requirements of the air conditioner heat exchanger 1000. The diameters of the two branch capillaries 40 may be the same or different, depending on the refrigerant flow rate of the first branch pipe group 12.
Specifically, the refrigerant flowing through the first-stage shunt tube group 12 flows into the second-stage shunt tube groups 24, the other end of each first-stage shunt tube group 12 is communicated with one end of the second-stage shunt tube groups 24, and an outlet of each first-stage shunt tube group 12 corresponds to inlets of at least two second-stage shunt tube groups 24, so that the purpose of performing second-stage shunt on the refrigerant is achieved, and sufficient heat exchange of the refrigerant is achieved. It is understood that the two primary shunt tube groups 12 respectively correspond to the same number of the two secondary shunt tube groups 24, and in the embodiment of the present invention, the two primary shunt tube groups 12 respectively correspond to the same number of the two secondary shunt tube groups 24.
Specifically, after flowing through the secondary flow distribution pipe group 24, the refrigerant sequentially flows into the first pipe group 14, so as to complete the circulation of one branch, and the refrigerant of each branch flows out of the first pipe group 14 and flows to the collecting pipe 50 through confluence, thereby completing the heat exchange process of the refrigerant.
According to the technical scheme, the first heat exchange tube group 10 and the second heat exchange tube group 20 are arranged, the first shunting tube group 12 is formed on the first heat exchange tube group 10, the second tube group 22 and the second shunting tube group 24 are formed on the second heat exchange tube group 20, refrigerants enter from the second tube group 22 and then are shunted into the first shunting tube group 12 through the shunting capillary tubes 40, the uniformity of the refrigerants is improved, the first shunting tube group 12 is communicated with the second shunting tube group 24, the refrigerants are further shunted through the second shunting tube group 24, the refrigerants are enabled to fully exchange heat in the heat exchange tube 100, and the heat exchange efficiency of the refrigerants is improved.
In an embodiment, referring to fig. 1, an arrow direction in fig. 1 shows an air intake direction of the heat exchanger 1000, the second heat exchange tube group 20 is disposed on an air intake side of the first heat exchange tube group 10, and a tube diameter of the first heat exchange tube group 10 is greater than a tube diameter of the second heat exchange tube group 20.
Specifically, in the embodiment of the present invention, the pipe diameters of the heat exchange pipes 100 are sequentially increased along the air inlet direction, that is, each flow path of the refrigerant flows from the heat exchange pipe 100 with a small pipe diameter to the heat exchange pipe 100 with a large pipe diameter, and for the heat exchanger 1000 in the refrigeration process, the refrigerant enters the heat exchange pipe 100 from the gas-liquid two-phase flow to absorb the heat of the air and is changed into the gas-phase refrigerant, in this process, the volume of the refrigerant is increased, the pipe diameter of the heat exchange pipe 100 is gradually increased in the direction of the flow path of the refrigerant, so that the contact area between the air and the refrigerant is increased, and the heat exchange efficiency of the refrigerant is further improved.
In an embodiment, referring to fig. 1 and 2, the heat exchanger 1000 further includes a third heat exchange tube set 30, and the third heat exchange tube set 30 is arranged side by side with the first heat exchange tube set 10 and the second heat exchange tube set 20; the first heat exchange tube group 10 is located between the second heat exchange tube group 20 and the third heat exchange tube group 30, and the pipe diameter of the first heat exchange tube group 10 is smaller than that of the third heat exchange tube group 30; the third heat exchange tube group 30 includes a plurality of third tube groups 32 and a plurality of fourth tube groups 34, the other ends of the plurality of primary flow-dividing tube groups 12 communicate with one ends of the plurality of fourth tube groups 34, respectively, the other end of each of the fourth tube groups 34 communicates with one ends of the plurality of secondary flow-dividing tube groups 24, the other ends of the plurality of first tube groups 14 communicate with one ends of the plurality of third tube groups 32, respectively, and the other ends of the plurality of third tube groups 32 communicate with the collecting pipe 50.
Specifically, referring to fig. 1, a heat exchange tube 100 in the embodiment of the present invention is divided into a first heat exchange tube group 10, a second heat exchange tube group 20, and a third heat exchange tube group 30, which are vertically arranged in three rows along an air intake direction, wherein the first heat exchange tube group 10 is located between the second heat exchange tube group 20 and the third heat exchange tube group 30, and a tube diameter of the first heat exchange tube group 10 is smaller than a tube diameter of the third heat exchange tube group 30. It should be noted that, in the embodiment of the present invention, the names of the first heat exchange tube group 10, the second heat exchange tube group 20, and the third heat exchange tube group 30 are only used to distinguish the positions of the three rows of heat exchange tubes 100, and do not refer to the refrigerant flowing relationship of the three rows of heat exchange tubes 100. It is understood that a connection line between the heat exchange tubes 100 in fig. 1 represents a flow path direction of the refrigerant. In the embodiment of the invention, the two stages of the shunt pipes are arranged in the heat exchange tube 100, so that the refrigerant is shunted to different branches in the heat exchange tube 100 for heat exchange, and the heat exchange efficiency of the refrigerant is improved.
Specifically, referring to fig. 1, 3 and 4, the third heat exchange tube group 30 includes a plurality of third tube groups 32 and a plurality of fourth tube groups 34, the third tube groups 32 may be formed by one or more heat exchange tubes 100 of the third heat exchange tube group 30, one end of the third tube groups 32 is communicated with the other end of the first tube group 14, and the other end of the third tube groups 32 is communicated with the collecting pipe 50. In fig. 1, a third tube group 32 having one heat exchange tube 100 is exemplarily shown, and it can be understood that the third tube group 30 in fig. 1 includes, in order from top to bottom, the third tube group 32 having two heat exchange tubes 100, one heat exchange tube 100, two heat exchange tubes 100, one heat exchange tube 100, and two heat exchange tubes 100, according to the definition of the third tube group 32.
Specifically, after flowing through the secondary branch pipe group 24, the refrigerant sequentially flows into the first pipe group 14 and the third pipe group 32, so that circulation of one branch is completed, and the refrigerant of each branch flows out of the third pipe group 32 and flows to the collecting pipe 50 through confluence, so that the refrigerant heat exchange process is completed.
Specifically, referring to fig. 2, the first-stage flow dividing tube group 12 is followed by a fourth tube group 34, the fourth tube group 34 is formed by the heat exchange tubes 100 of the third heat exchange tube group 30, the fourth tube group 34 can be formed by one or more heat exchange tubes 100, and the fourth tube group 34 shown in fig. 1 is formed by one heat exchange tube 100 and two heat exchange tubes 100. The refrigerant flowing into the second tube group 22 is shunted to the first-stage shunt tube group 12 through the shunt capillary tube 40, and the first-stage shunt tube group 12 flows through the fourth tube group 34, so that the diameter of the refrigerant passing through the heat exchange tube 100 is increased from small to large in the first-stage shunt process, the heat exchange efficiency of the refrigerant is maximized in the first-stage shunt process, and the refrigerant is better in uniformity after being shunted.
In one embodiment, referring to fig. 1, 3 and 4, the heat exchanger 1000 further comprises: a flow divider 60, wherein the flow divider 60 includes a third port 62 and a plurality of fourth ports 64, the third port 62 is communicated with the other ends of the plurality of fourth tube sets 34, and the plurality of fourth ports 64 are respectively communicated with one ends of the plurality of second-stage flow dividing tube sets 24.
Specifically, in the embodiment of the present invention, the number of the first-stage flow dividing tube groups 12 is two, the refrigerants flowing out of the fourth tube group 34 are respectively two L1 paths and two L2 paths, the two paths of refrigerants respectively flow into two different flow dividers 60 for flow dividing, and the flow dividers 60 divide the flows to make the amount of the refrigerants in each refrigerant flow path the same, thereby ensuring that the heat exchange of each flow path is sufficient. The number of refrigerant branches of each flow divider 60 may be the same or different, and in the embodiment of the present invention, the number of branches divided by each flow divider 60 is the same, and all the branches are 4 branches, that is, each flow divider 60 is respectively communicated with 4 secondary flow dividing pipe groups 24.
In an embodiment, referring to fig. 1, the second heat exchange tube set 20, the first heat exchange tube set 10, and the third heat exchange tube set 30 are arranged in a staggered manner in an air outlet direction.
Specifically, the second heat exchange tube group 20, the first heat exchange tube group 10 and the third heat exchange tube group 30 are arranged in the air outlet direction in a staggered manner, so that the heat exchange tubes 100 in the rear row in the air outlet direction are prevented from being shielded by the heat exchange tubes 100 in the front row, and the heat exchanger 1000 is more fully contacted with air.
In an embodiment, the pipe diameter of the second heat exchange pipe group 20 is 5.5-6.5 mm, the pipe diameter of the first heat exchange pipe group 10 is 6.5-7.5 mm, and the pipe diameter of the third heat exchange pipe group 30 is 7.5-8.5 mm. Specifically, the heat exchange tube 100 has a small tube diameter, which causes a problem of large resistance to the refrigerant passing through the heat exchanger and large pressure loss, and therefore, the overall tube diameter of the heat exchange tube 100 needs to be moderate.
In a preferred embodiment, the pipe diameter of the second heat exchange pipe group 20 is 6.35mm, the pipe diameter of the first heat exchange pipe group 10 is 7mm, and the pipe diameter of the third heat exchange pipe group 30 is 8 mm.
In particular, the smallest pipe diameter
The heat exchange tube 100 is arranged on the windward side, and then the middle pipe diameter
The heat exchange tube 100, and finally, the large-diameter tube
The heat exchange tube 100. From the analysis of the heating operation of the air conditioner, the refrigerant flows in the heat exchanger of the outdoor unit as follows:
the refrigerant (gas-liquid two-phase) throttled by the electronic expansion valve enters the heat exchanger from the bottom pipeline of the outdoor heat exchanger, and 2 refrigerants at the outer side of the heat exchanger
After heat exchange of the second tube group 22 formed by the heat exchange tubes, the heat exchange tubes are shunted through 2 shunt capillaries 40 (the diameter of the capillary tube is recommended to be 1.2 x 0.9mm), and after shunting, one tube passes through one shunt capillary downwards
And then 2 heat exchange tubes 100 are passed through
The heat exchange tube 100; the other path passes through 2
After passing through 1 heat exchange tube 100
The heat exchange tube 100. From
The two paths from the heat exchange tube 100 enter the corresponding flow dividers 60 respectively.
In the first flow divider 60, the refrigerant is divided into 4 paths, and the 1 st path passes through 2 paths from top to bottom
1 root of Chinese thorowax
And 2
Path 2 through 1
2 root of Chinese thorowax
2 root of Chinese thorowax
Route 3 via 2
2 root of Chinese thorowax
1 root of Chinese thorowax
The 4 th path passes 2
2 root of Chinese thorowax
1 root of Chinese thorowax
In the second flow divider 60, the refrigerant is divided into 4 paths, and the 1 st path passes through 2 paths from top to bottom
1 root of Chinese thorowax
2 root of Chinese thorowax
Path 2 through 1
2 root of Chinese thorowax
2 root of Chinese thorowax
Path 3 through 2
2 root of Chinese thorowax
1 root of Chinese thorowax
The 4 th path passes 2
1 root of Chinese thorowax
2 root of Chinese thorowax
From
The 8 branches from the pipeline are connected with the flute pipe and then leave the outdoor heat exchanger to return to the compressor.
In one embodiment, the heat exchange tube comprises a straight tube section and a bent tube section connected with the straight tube section, and the length of the straight tube section is 500-1200 mm. The length of the heat exchange tube needs to be moderate, the longer the heat exchange tube is, the better the heat exchange effect is, but the volume of the heat exchanger can be increased, so that the volume of the air conditioner is increased, and the heat exchange tube is too short, so that the good heat exchange effect cannot be achieved.
The present invention further provides an outdoor unit of an air conditioner, which includes a casing and a heat exchanger, wherein the heat exchanger is disposed in the casing, and the specific structure of the heat exchanger refers to the above embodiments.
The invention further provides an air conditioner, which comprises an air conditioner indoor unit and an air conditioner outdoor unit, wherein the air conditioner indoor unit and the air conditioner outdoor unit are connected through a refrigerant pipe, the air conditioner outdoor unit comprises a case and a heat exchanger arranged in the case, the specific structure of the heat exchanger refers to the embodiments, and the air conditioner outdoor unit adopts all the technical schemes of all the embodiments, so that the air conditioner outdoor unit at least has all the beneficial effects brought by the technical schemes of the embodiments, and the details are not repeated.
The above description is only an alternative embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (12)
1. The utility model provides a heat exchanger, its characterized in that, the heat exchanger includes the fin and wears to locate the heat exchange tube of fin, the heat exchange tube includes:
the refrigerant flows into the heat exchanger from the first interface when the heat exchanger is used as a condenser, and flows out of the heat exchanger from the first interface when the heat exchanger is used as an evaporator;
the second interface is used for enabling the refrigerant to flow out of the heat exchanger from the second interface when the heat exchanger is used as a condenser, and enabling the refrigerant to flow into the heat exchanger from the second interface when the heat exchanger is used as an evaporator;
the first heat exchange tube group comprises a plurality of first-stage shunt tube groups and a plurality of first tube groups;
the second heat exchange tube group is arranged in parallel with the first heat exchange tube group and comprises a second tube group and a plurality of secondary flow dividing tube groups, and one end of the second tube group is communicated with the first interface;
the flow dividing capillary tube is provided with a first port and a plurality of second ports, the first port is communicated with the other end of the second tube group, and the second ports are respectively communicated with one ends of the first-stage flow dividing tube groups; and
a manifold in communication with the second port,
the other end of each first-stage shunt pipe group is communicated with one end of each second-stage shunt pipe group, the other ends of the second-stage shunt pipe groups are communicated with one ends of the first pipe groups respectively, and the other ends of the first pipe groups are communicated with the collecting pipe.
2. The heat exchanger as recited in claim 1 wherein said second heat exchange tube group is disposed on an air intake side of said first heat exchange tube group, a tube diameter of said first heat exchange tube group being larger than a tube diameter of said second heat exchange tube group.
3. The heat exchanger as recited in claim 2 further comprising a third heat exchange tube bank, said third heat exchange tube bank being juxtaposed with said first heat exchange tube bank and said second heat exchange tube bank;
the first heat exchange tube group is positioned between the second heat exchange tube group and the third heat exchange tube group, and the pipe diameter of the first heat exchange tube group is smaller than that of the third heat exchange tube group;
the third heat exchange tube group includes a plurality of third nest of tubes and a plurality of fourth nest of tubes, a plurality of one-level shunt nest of tubes the other end respectively with the one end intercommunication of a plurality of fourth nest of tubes, every the other end and a plurality of the one end intercommunication of second grade shunt nest of tubes, a plurality of first nest of tubes the other end respectively with the one end intercommunication of a plurality of third nest of tubes, a plurality of third nest of tubes the other end with converge the pipe intercommunication.
4. The heat exchanger of claim 3, further comprising:
the shunt comprises a third port and a plurality of fourth ports, the third port is communicated with the other ends of the plurality of fourth pipe groups, and the plurality of fourth ports are communicated with one ends of the plurality of second-stage shunt pipe groups respectively.
5. The heat exchanger of claim 4, wherein there are two of said primary tube banks and said flow splitters.
6. The heat exchanger as recited in claim 4 wherein said second heat exchange tube set, said first heat exchange tube set and said third heat exchange tube set are staggered in an air outlet direction.
7. The heat exchanger as claimed in claim 6, wherein the second heat exchange tube group has a tube diameter of 5.5 to 6.5mm, the first heat exchange tube group has a tube diameter of 6.5 to 7.5mm, and the third heat exchange tube group has a tube diameter of 7.5 to 8.5 mm.
8. The heat exchanger as recited in claim 7 wherein the second heat exchange tube bank has a tube diameter of 6.35mm, the first heat exchange tube bank has a tube diameter of 7mm, and the third heat exchange tube bank has a tube diameter of 8 mm.
9. The heat exchanger of claim 8, wherein the heat exchange tube comprises a straight tube section and a bent tube section connecting the straight tube section, and the length of the straight tube section is 500mm to 1200 mm.
10. The heat exchanger of claim 9, wherein the manifold is a flute tube.
11. An outdoor unit of an air conditioner, comprising a casing and the heat exchanger according to any one of claims 1 to 10, the heat exchanger being disposed in the casing.
12. An outdoor unit of an air conditioner, comprising the outdoor unit of an air conditioner according to claim 11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011644162.0A CN114688635A (en) | 2020-12-30 | 2020-12-30 | Heat exchanger, air condensing units and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011644162.0A CN114688635A (en) | 2020-12-30 | 2020-12-30 | Heat exchanger, air condensing units and air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114688635A true CN114688635A (en) | 2022-07-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011644162.0A Pending CN114688635A (en) | 2020-12-30 | 2020-12-30 | Heat exchanger, air condensing units and air conditioner |
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| Country | Link |
|---|---|
| CN (1) | CN114688635A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204006815U (en) * | 2014-07-04 | 2014-12-10 | 广东美的暖通设备有限公司 | Heat exchanger, air-conditioner outdoor unit and air-conditioner |
| CN210861410U (en) * | 2019-11-28 | 2020-06-26 | 广东美的制冷设备有限公司 | Heat exchanger assembly and air conditioner indoor unit with same |
-
2020
- 2020-12-30 CN CN202011644162.0A patent/CN114688635A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204006815U (en) * | 2014-07-04 | 2014-12-10 | 广东美的暖通设备有限公司 | Heat exchanger, air-conditioner outdoor unit and air-conditioner |
| CN210861410U (en) * | 2019-11-28 | 2020-06-26 | 广东美的制冷设备有限公司 | Heat exchanger assembly and air conditioner indoor unit with same |
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