CN217464978U - Outdoor unit of air conditioner - Google Patents

Abstract

The utility model discloses an air conditioner outdoor unit, which comprises a heat exchanger and a plurality of shunt assemblies, wherein the heat exchanger is arranged in the internal installation space of the outdoor unit, the heat exchanger is provided with a plurality of groups of heat exchange flat pipe groups which are arranged up and down, and each group of heat exchange flat pipe groups comprises a plurality of heat exchange flat pipes which are arranged up and down at intervals; the plurality of shunt assemblies are connected with the plurality of groups of heat exchange flat tube groups in a one-to-one correspondence manner; every reposition of redundant personnel subassembly includes reposition of redundant personnel head and a plurality of reposition of redundant personnel branch pipes, and reposition of redundant personnel branch pipe includes the capillary at least, and a plurality of reposition of redundant personnel branch pipes set up along the circumference interval of reposition of redundant personnel head, and reposition of redundant personnel branch pipe and heat transfer flat union coupling, every reposition of redundant personnel branch pipe have bending structure. This scheme can solve current large-scale top air-out off-premises station heat exchanger reposition of redundant personnel inhomogeneous problem, solves reposition of redundant personnel subassembly production efficiency low, the reliability is poor and actual operability subalternation problem simultaneously.

Description

Outdoor unit of air conditioner

Technical Field

The utility model relates to a refrigeration plant technical field especially relates to an air condensing units.

Background

One of the most important factors determining the performance of the air conditioner is the heat exchange efficiency of the heat exchanger, and the most important factor determining the heat exchange efficiency of the heat exchanger is the shunting uniformity of the heat exchanger. Because commercial top-outlet air conditioner fan is placed in whole air conditioner top portion, and the heat exchanger sets up in the fan lower part, this just leads to whole air conditioner wind field to weaken gradually from the top down, and the bigger heat exchange efficiency of local heat exchanger of amount of wind is better, and required flow just also is bigger, this just needs to guarantee that commercial top-outlet air conditioner heat exchanger reposition of redundant personnel flow from the top down is decreased progressively in proper order to the law that flow decreases progressively needs to be unanimous with the trend law that the amount of wind decreases progressively, just can exert the best heat exchange efficiency of heat exchanger. But often cannot be precisely regulated and controlled in reality.

Meanwhile, the commercial top-outlet air conditioner has higher requirement on capacity, the area of the heat exchanger is often very large in order to further improve the performance of the air conditioner, and the difficulty in adjusting the flow distribution uniformity of the heat exchanger is increased, so that the number of flow distribution paths of the heat exchanger for adjusting the flow can reach 16 paths, 32 paths or more, capillaries and flow distribution branch pipes for adjusting the flow distribution are numerous, the shapes of the pipelines are complex and changeable, and the difficulty in actual production and transportation reliability is increased. Therefore, the reasonable pipeline direction and the spatial layout of the pipeline components are very important.

In the existing product, due to consideration of factors in various aspects such as design, production, transportation and cost, the flow distribution uniformity of a part of heat exchangers needs to be sacrificed to reduce the design and production difficulty and improve the economic benefit of the product. Therefore, a product which can ensure the flow distribution uniformity of the heat exchanger and improve the production efficiency and the transportation reliability is urgently needed in the market.

The above information disclosed in this background section is only for enhancement of understanding of the background of the application and therefore it may comprise prior art that does not constitute known to a person of ordinary skill in the art.

SUMMERY OF THE UTILITY MODEL

To the problem pointed out in the background art, the utility model provides an air condensing units solves current large-scale air-out outdoor unit heat exchanger reposition of redundant personnel inhomogeneous problem, solves the poor and poor scheduling problem of actual operability of reposition of redundant personnel subassembly production efficiency simultaneously.

In order to realize the purpose of the utility model, the utility model adopts the following technical scheme to realize:

in some embodiments of the present application, an outdoor unit of an air conditioner is provided, including:

the heat exchanger is arranged in an internal installation space of the outdoor unit and is provided with a plurality of groups of heat exchange flat tube groups which are arranged up and down, and each group of heat exchange flat tube groups comprises a plurality of heat exchange flat tubes which are arranged up and down at intervals;

the plurality of flow distribution assemblies are connected with the plurality of groups of heat exchange flat tube groups in a one-to-one correspondence manner;

every the reposition of redundant personnel subassembly includes reposition of redundant personnel head and a plurality of reposition of redundant personnel branch pipe, and the reposition of redundant personnel branch pipe includes the capillary at least, and is a plurality of the reposition of redundant personnel branch pipe is followed the circumference interval of reposition of redundant personnel head sets up, the reposition of redundant personnel branch pipe with heat transfer flat union coupling, every the reposition of redundant personnel branch pipe has bending structure.

In some embodiments of the present application, the branch pipe includes a capillary tube, one end of the capillary tube is connected to the branch head, the other end of the capillary tube is connected to the flat heat exchange tube, and the capillary tube has a bending structure;

or, the reposition of redundant personnel branch pipe includes capillary and reposition of redundant personnel connecting pipe, the one end of capillary with the reposition of redundant personnel head is connected, the other end of capillary with the reposition of redundant personnel connecting pipe is connected, the other end of reposition of redundant personnel connecting pipe with flat union coupling of heat transfer, the reposition of redundant personnel connecting pipe has bending structure.

In some embodiments of the present application, a plurality of the capillaries in each of the manifold assemblies have a wall thickness gauge of 2-4;

when the shunt branch pipes comprise shunt connecting pipes, the pipe diameters and the wall thicknesses of the shunt connecting pipes are the same.

In some embodiments of this application, same in the reposition of redundant personnel subassembly, it is a plurality of the one end of reposition of redundant personnel branch pipe is followed the circumference of reposition of redundant personnel head sets up at interval in proper order, and is a plurality of the other end of reposition of redundant personnel branch pipe is followed the direction of height of heat transfer flat tube group sets up at interval in proper order, each the shape of reposition of redundant personnel branch pipe is inconsistent.

In some embodiments of the present application, in a plurality of branch pipes connected to the same branch head, the bent structures of the branch pipes are staggered and located at different height positions.

In some embodiments of the present application, in the same flow dividing assembly, portions of the plurality of capillary tubes close to the flow dividing head are straight tubes, and the straight tube portions of the plurality of capillary tubes are parallel to each other and are bundled together.

In some embodiments of the present application, the bending structure of the branch pipe is an L-shaped structure or a square-shaped structure.

In some embodiments of this application, flow distribution branch with the part that the heat exchanger is connected is the straight tube, the straight tube with the heat transfer flat pipe is parallel.

In some embodiments of the present invention, the heat exchanger is a G-type heat exchanger, the heat exchanger is circumferentially arranged along an inner installation space of the outdoor unit, the heat exchanger includes an L-shaped main body portion, a first bent portion and a second bent portion, the first bent portion is disposed at one side of the L-shaped main body portion, and the second bent portion is disposed at the other side of the L-shaped main body portion;

the plurality of the flow dividing assemblies are arranged at the middle position close to one side of the first bending part, and the plurality of the flow dividing assemblies are positioned at the inner side of the G-shaped heat exchanger.

In some embodiments of the present application, the plurality of flow dividing heads are staggered from each other in the front-rear direction and also staggered from each other in the left-right direction.

Compared with the prior art, the utility model discloses an advantage is with positive effect:

in the disclosed air condensing units of this application, correspond multichannel heat transfer flat pipe through a plurality of reposition of redundant personnel subassemblies, guarantee that each way heat transfer flat pipe all has independent reposition of redundant personnel branch pipe, help improving the reposition of redundant personnel homogeneity of heat exchanger.

The plurality of shunt branch pipes are arranged at intervals along the circumferential direction of the shunt head, so that the structure is compact and the size is small when the plurality of shunt branch pipes are led out from the shunt head, and then each shunt branch pipe is led to the corresponding heat exchange flat pipe, thereby being convenient for assembly.

Every reposition of redundant personnel branch pipe all has bending structure, improves the pliability of pipeline, increases the relative motion amount of reposition of redundant personnel branch pipe in the direction of bending, can effectively avoid producing cracked phenomenon in the transportation.

Other features and advantages of the present invention will become more apparent from the following detailed description of the invention when read in conjunction with the accompanying drawings.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

Fig. 1 is a schematic structural view of an outdoor unit of an air conditioner according to an embodiment;

fig. 2 is a schematic view of an assembled structure of an outdoor heat exchanger and a flow dividing assembly according to an embodiment;

FIG. 3 is a schematic diagram of the relative arrangement of two flow diversion assemblies according to an embodiment;

FIG. 4 is a schematic structural diagram of a flow diversion assembly according to an embodiment;

FIG. 5 is a schematic diagram of a shunt leg according to an embodiment including only a capillary tube;

FIG. 6 is a schematic diagram of a shunt leg including a capillary tube and a shunt connection tube according to an embodiment;

FIG. 7 is a schematic view of a first step in an assembly process of a flow diversion assembly according to an embodiment;

FIG. 8 is a schematic diagram of a second step in the assembly process of the shunt assembly according to the embodiments;

FIG. 9 is a third schematic diagram of a flow diversion assembly process according to an embodiment;

FIG. 10 is a seventh step in the assembly process of the shunt assembly according to the embodiment;

FIG. 11 is an eighth step schematic illustration of a shunt assembly process according to an embodiment;

FIG. 12 is a fifteenth step schematic illustration of a flow diversion assembly process according to an embodiment;

reference numerals:

100-heat exchanger, 110-L-shaped body part, 120-first bending part, 130-second bending part;

200-a shunt assembly, 210-a shunt head, 220-a shunt branch pipe, 221-a capillary pipe, 222-a shunt connecting pipe, 223-a shunt branch pipe connected with a straight pipe part of the shunt head, and 224-a shunt branch pipe connected with a straight pipe part of a heat exchange flat pipe;

300-Fan.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, 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 application.

In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.

The terms "first", "second" and "first" are used 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" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the invention. In order to simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or reference letters in the various examples, which have been repeated for purposes of simplicity and clarity and do not in themselves dictate a relationship between the various embodiments and/or arrangements discussed. In addition, the present disclosure provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize the application of other processes and/or the use of other materials.

[ basic operation principle of air conditioner ]

The air conditioner performs a refrigeration cycle of the air conditioner by using a compressor, a condenser, an expansion valve, and an evaporator. The refrigeration cycle includes a series of processes involving compression, condensation, expansion, and evaporation to cool or heat an indoor space.

The low-temperature and low-pressure refrigerant enters the compressor, the compressor compresses the refrigerant gas in a high-temperature and high-pressure state, and the compressed refrigerant gas is discharged. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and heat is released to the surrounding environment through the condensation process.

The expansion valve expands the high-temperature and high-pressure liquid-phase refrigerant condensed in the condenser into a low-pressure liquid-phase refrigerant. The evaporator evaporates the refrigerant expanded in the expansion valve and returns the refrigerant gas in a low-temperature and low-pressure state to the compressor. The evaporator can achieve a cooling effect by heat-exchanging with a material to be cooled using latent heat of evaporation of a refrigerant. The air conditioner can adjust the temperature of the indoor space throughout the cycle.

The outdoor unit of the air conditioner refers to a portion of a refrigeration cycle including a compressor and an outdoor heat exchanger, the indoor unit of the air conditioner includes an indoor heat exchanger, and an expansion valve may be provided in the indoor unit or the outdoor unit.

The indoor heat exchanger and the outdoor heat exchanger serve as a condenser or an evaporator. When the indoor heat exchanger serves as a condenser, the air conditioner performs a heating mode; when the indoor heat exchanger is used as an evaporator, the air conditioner performs a cooling mode.

The indoor heat exchanger and the outdoor heat exchanger are switched to be used as a condenser or an evaporator, a four-way valve is generally adopted, and specific reference is made to the arrangement of a conventional air conditioner, which is not described herein again.

The refrigeration working principle of the air conditioner is as follows: the compressor works to enable the interior of the indoor heat exchanger (in the indoor unit, the evaporator at the moment) to be in an ultralow pressure state, liquid refrigerant in the indoor heat exchanger is rapidly evaporated to absorb heat, air blown out by the indoor fan is cooled by the coil pipe of the indoor heat exchanger to become cold air to be blown into a room, the evaporated and vaporized refrigerant is compressed by the compressor, is condensed into liquid in a high-pressure environment in the outdoor heat exchanger (in the outdoor unit, the condenser at the moment) to release heat, and the heat is dissipated into the atmosphere through the outdoor fan, so that the refrigeration effect is achieved by circulation.

The heating working principle of the air conditioner is as follows: the gaseous refrigerant is pressurized by the compressor to become high-temperature and high-pressure gas, and the high-temperature and high-pressure gas enters the indoor heat exchanger (the condenser at the moment), is condensed, liquefied and released heat to become liquid, and simultaneously heats indoor air, so that the aim of increasing the indoor temperature is fulfilled. The liquid refrigerant is decompressed by the throttling device, enters the outdoor heat exchanger (an evaporator at the moment), is evaporated, gasified and absorbs heat to form gas, absorbs the heat of outdoor air (the outdoor air becomes cooler) to form gaseous refrigerant, and enters the compressor again to start the next cycle.

[ Top-outlet type air-conditioning outdoor unit and heat exchanger ]

The outdoor unit in this embodiment is a top-outlet large-sized outdoor unit of an air conditioner, referring to fig. 1, the fan 300 is located at the top of the outdoor unit, and the heat exchanger 100 is located below the fan 300 and distributed around the outdoor unit, which results in that the wind field of the whole outdoor unit is gradually weakened from top to bottom, the heat exchange efficiency of the heat exchanger at the place with larger wind volume is better, the required flow rate is larger, and it is necessary to ensure that the flow rate of the heat exchanger of the top-outlet large-sized outdoor unit is gradually decreased from top to bottom, so that the optimal heat exchange efficiency of the heat exchanger can be exerted.

In some embodiments of the present application, referring to fig. 2, the heat exchanger 100 is a G-type heat exchanger, the heat exchanger 100 is circumferentially arranged along an inner installation space of the outdoor unit, the heat exchanger 100 includes an L-shaped main body 110, a first bent portion 120 and a second bent portion 130, the first bent portion 120 is disposed on one side of the L-shaped main body 110, and the second bent portion 130 is disposed on the other side of the L-shaped main body 110.

The G-type heat exchanger has large area and has promotion effect on heat exchange effect.

The heat exchanger 100 has a plurality of heat exchange flat tube groups arranged up and down, and each heat exchange flat tube group includes a plurality of heat exchange flat tubes arranged up and down at intervals.

The number of the heat exchange flat tube groups and the number of the heat exchange flat tubes in each group of the heat exchange flat tube groups are determined according to actual requirements, for example, some heat exchangers comprise 32 paths of heat exchange flat tubes, the 32 paths of heat exchange flat tubes are divided into two groups of heat exchange flat tube groups which are arranged up and down, and each group of the heat exchange flat tube groups also comprises 16 heat exchange flat tubes; for another example, some heat exchangers include 16 heat exchange flat tubes, and these 16 heat exchange flat tubes are divided into two groups of heat exchange flat tube groups arranged from top to bottom, so that each group of heat exchange flat tube groups also includes 8 heat exchange flat tubes.

[ shunt Assembly ]

Due to the increase of the heat exchange area of the G-shaped heat exchanger, the difficulty of the flow distribution uniformity of the heat exchanger is increased. The present embodiment addresses this problem by the shunt assembly 200.

Referring to fig. 2 to 4, the plurality of flow dividing assemblies 200 are provided, and the plurality of flow dividing assemblies 200 are connected with the plurality of groups of heat exchange flat tube groups in a one-to-one correspondence manner.

Each shunt assembly 200 comprises a shunt head 210 and a plurality of shunt branch pipes 220, each shunt branch pipe 220 at least comprises a capillary 221, the shunt branch pipes 220 are arranged along the circumferential direction of the shunt head 210 at intervals, the shunt branch pipes 220 are connected with heat exchange flat pipes, and each shunt branch pipe 220 has a bending structure.

The dividing head 210 is used for dividing the refrigerant into the number of dividing paths required by the heat exchanger according to the dividing uniformity requirement of the heat exchanger 100.

The capillary tube 221 functions to adjust a flow rate of the refrigerant.

Taking the 32-channel G-type heat exchanger shown in fig. 2 as an example, the number of the flow dividing assemblies 200 is two, wherein a plurality of flow dividing branch pipes 220 led out from one flow dividing assembly 200 are connected with 16 channels of heat exchange flat pipes on the upper part of the heat exchanger 100 in a one-to-one correspondence manner, and a plurality of flow dividing branch pipes 220 led out from the other flow dividing assembly 220 are connected with 16 channels of heat exchange flat pipes on the lower part of the heat exchanger 100 in a one-to-one correspondence manner.

Correspond multichannel heat transfer flat pipe through a plurality of reposition of redundant personnel subassemblies 200, guarantee that each way heat transfer flat pipe all has independent reposition of redundant personnel branch pipe 220, help improving the reposition of redundant personnel homogeneity of heat exchanger.

The plurality of branch pipes 220 are arranged at intervals along the circumferential direction of the flow dividing head 210, so that the plurality of branch pipes 220 are compact in structure and small in size when being led out from the flow dividing head 210, and then each branch pipe 220 is led to the corresponding heat exchange flat pipe, thereby facilitating assembly.

Every reposition of redundant personnel branch pipe 220 all has bending structure, improves the pliability of pipeline, because in large-scale off-premises station actual transportation, no matter be through vehicle land transportation or through boats and ships water route transportation, all can produce the great transportation vibration of amplitude ratio, because reposition of redundant personnel branch pipe diameter itself is less, the pipe wall is thinner, and intensity is lower, through long-time vibration accumulation, can produce fatigue fracture. Such phenomena occur frequently during actual transportation. Therefore, by adding a bending structure to the branch pipes 220, the flexibility of the branch pipes 220 itself can be increased, and the amount of relative movement of the branch pipes 220 in the bending direction can be increased, thereby effectively avoiding the phenomenon of fracture in the transportation process.

The heat exchanger capillary of present many air condensing units all adopts the non-fixed shape, also be exactly according to the length of every capillary, adopt in the mode direct access heat exchanger of straight tube, this just causes the production unstability, can't guarantee the production uniformity, can appear colliding each other between the pipeline in actual production process, whole air conditioner is because the compressor vibration influence during operation, can drive whole air conditioner and vibrate together, the capillary mutual contact, because the vibration can produce displacement each other, and then produce friction each other, through long-time looks mutual friction, the wall thickness can the attenuation gradually, finally produce and reveal the risk.

In the embodiment, each branch flow distribution pipe 220 is in a fixed shape, that is, is provided with a bending structure, so that the production consistency is ensured, and in the design, each branch flow distribution pipe 220 is staggered with each other, a certain mutual distance is kept, the branch flow distribution pipes are ensured not to be in contact with each other, and the leakage risk is prevented.

In some embodiments of the present application, the bent structure of the branch pipes 220 is an L-shaped structure or a square-shaped structure.

In some embodiments of the present application, referring to fig. 5, the shunt tube 220 includes only the capillary tube 221, at this time, the length of the capillary tube 221 is long enough, after the capillary tube 221 is led out from the shunt head 210, the capillary tube 221 may be directly connected to the heat exchange flat tube, and the capillary tube 221 has a bent structure.

The structure shown in fig. 5 is only a bending structure of the capillary tubes 221, and the bending structure of each capillary tube 221 differs according to the position of the capillary tube with respect to the flow dividing head and the heat exchange flat tube.

In some embodiments of the present application, referring to fig. 6, when the length of the capillary 221 is short and cannot be directly connected to a heat exchange flat tube, the shunt branch 220 includes the capillary 221 and a shunt connection tube 222, one end of the capillary 221 is connected to the shunt head 210, the other end of the capillary 221 is connected to the shunt connection tube 222, the other end of the shunt connection tube 222 is connected to the heat exchange flat tube, and the shunt connection tube 222 has a bending structure.

The structure shown in fig. 5 is only a bending structure of the connection manifold 222, and the bending structure of each connection manifold 222 is different according to the position of the connection manifold with respect to the manifold 210 and the heat exchanger flat tubes.

Each of the manifold assemblies 200 includes a manifold branch 220 having only a capillary tube and a manifold connecting tube, and the manifold branch 220 includes a capillary tube and a manifold connecting tube.

In some embodiments of the present application, the plurality of capillary tubes 221 in each diverter assembly 200 have a wall thickness gauge of 2-4; when the branch pipes 220 include the branch connection pipes 222, the pipe diameters and the wall thicknesses of the branch connection pipes 222 are the same.

The heat exchanger 100 is designed to achieve uniform flow distribution by adjusting the wall thickness and length of the capillary tube 221, and the capillary tube 221 has a 4.76mm outer diameter, and the flow rate decreases as the capillary tube 221 is longer and longer. The flow rate of the 32 divided flows in the upper path of the heat exchanger 100 is reduced from top to bottom, so that the selection of the wall thickness and the length of the capillary tube 221 is particularly important, the capillary tube 221 is too long or too short to be beneficial to design and actual production, and the wall thickness cannot be too much, so that the production mixing is easily caused.

This application provides a concrete embodiment, and 0.7mm, 1mm and three well specifications of 1.3mm are got respectively to capillary 221 wall thickness, adopt these three kinds of wall thicknesses can not cause because the wall thickness sets up too much and produce the compounding phenomenon, and the processing degree of difficulty of bending is also lower to the piping itself simultaneously. If the wall thickness is set too thin, the pipe breaks at the bend due to the too thin wall thickness during the bending process. If the wall thickness is set too thick, the pipe will be wrinkled and squeezed due to too much material during the bending process, which will affect the processing quality of the pipe itself. Therefore, the length of the capillary tube can be calculated according to the three wall thicknesses, and a reasonable design length can be obtained.

The shunt connection pipe 222 is a pipe with a pipe diameter of 6.35mm and a wall thickness of 0.7mm, has a small and negligible influence on the flow rate, and is connected to the heat exchanger in a welding manner with a reasonable length.

In some embodiments of the present application, in the same flow distribution assembly 200, one ends of the plurality of flow distribution branch pipes 220 are sequentially disposed at intervals along the circumferential direction of the flow distribution head 210, the other ends of the plurality of flow distribution branch pipes 220 are sequentially disposed at intervals along the height direction of the heat exchange flat pipe group, and the shapes of the flow distribution branch pipes 220 are not the same.

Taking the shunt assembly 200 with 16 shunt branch pipes as an example, fig. 7 to 12 are schematic diagrams illustrating an assembly process of the shunt assembly 200, first numbering the shunt branch pipes 220 in sequence from top to bottom according to the sequence of the heat exchangers 100, which are connected to the shunt assembly, and respectively ranging from 1 to 16, then fixing the first shunt branch pipes 220 on a hole site of the shunt head 210, and sequentially installing the shunt branch pipes in a clockwise or counterclockwise sequence based on the hole site, so that as long as the position of the first branch is determined, other shunt branch pipes can be sequentially installed, and no error occurs.

Because the starting points of the branch pipes 220 are the same, but the end points thereof are different, and the first branch is the highest position, and the last branch is the lowest position, the end points thereof are also arranged from top to bottom in the process of sequentially installing the branch pipes 220 from the 1 st route to the 16 th route, so that in the actual operation process, the wrong pipeline or the malposition of the pipeline can be found in time, and can be corrected in time.

Fig. 7 shows a first step of mounting, fig. 8 shows a second step of mounting, fig. 9 shows a third step of mounting, with the fourth to sixth steps omitted, fig. 10 shows a seventh step of mounting, fig. 11 shows an eighth step of mounting, with the ninth to fourteenth steps omitted, fig. 12 shows a fifteenth step of mounting, with the sixteenth step of mounting, the state shown in fig. 4 is obtained.

Because the shunt assembly 200 has more pipelines and more complicated pipe types, the problems of low production efficiency, high production difficulty, easy error operation and the like can occur in the actual production process. This embodiment can solve this problem by the above-described installation process.

In some embodiments of the present application, in the plurality of branch pipes 220 connected to the same tap 210, the bending structures of the branch pipes 220 are staggered from each other and located at different height positions, so that on one hand, the installation is convenient, and on the other hand, the pipelines can be prevented from contacting each other to cause friction leakage.

In some embodiments of the present invention, in the same flow splitting assembly 200, the portions of the plurality of capillary tubes 221 adjacent to the flow splitting head 210 are straight tubes, and the straight tube portions of the plurality of capillary tubes (i.e., the straight tube portions 223 of the flow splitting branch connecting the flow splitting head) are parallel to each other and are bundled together.

The leakage between the pipes is caused by contact between the pipes and displacement between the pipes. When both are present, there is a risk of leakage between the pipes. Therefore, it is an important means to prevent leakage between the pipes by ensuring that there is no displacement between the branch pipes. Due to the structure of the shunting head 210, the positions of the connecting pipes are distributed around the shunting head, the connecting pipes are close to each other, and meanwhile, in order to save space as much as possible, the front part of the shunting assembly adopts mutually parallel straight pipes which are close to each other, and the flexibility of the pipe with the pipe diameter of 4.76mm is large, so that certain contact risk can be generated. The pipes in the straight line section are bundled by adopting a wire bundle, so that the pipes are tightly contacted with each other without mutual displacement, and the risk of pipe leakage can be avoided.

In some embodiments of this application, the part that divergent pipe 220 and heat exchanger 100 are connected is the straight tube, and reference numeral 224, the straight tube is parallel with heat transfer flat tube to with heat transfer flat tube connection.

In some embodiments of the present application, referring to fig. 2, a plurality of flow dividing groups 200 are disposed at a position near the middle of one side of the first bending portion 120, and a plurality of flow dividing assemblies 200 are disposed at the inner side of the G-type heat exchanger, so as to achieve a compact structure.

In some embodiments of this application, refer to, 3, a plurality of reposition of redundant personnel heads 210 stagger each other, also stagger each other in left and right directions in the front and back orientation, simplify the design degree of difficulty, pipeline layout is reasonable optimization more.

In the foregoing description of embodiments, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. An outdoor unit of an air conditioner, comprising:

the heat exchanger is arranged in an internal installation space of the outdoor unit and is provided with a plurality of groups of heat exchange flat tube groups which are arranged up and down, and each group of heat exchange flat tube groups comprises a plurality of heat exchange flat tubes which are arranged up and down at intervals;

the plurality of flow distribution assemblies are connected with the plurality of groups of heat exchange flat tube groups in a one-to-one correspondence manner;

every the reposition of redundant personnel subassembly includes reposition of redundant personnel head and a plurality of reposition of redundant personnel branch pipe, the reposition of redundant personnel branch pipe includes the capillary at least, and is a plurality of the reposition of redundant personnel branch pipe is followed the circumference interval of reposition of redundant personnel head sets up, the reposition of redundant personnel branch pipe with heat transfer flat union coupling, every the reposition of redundant personnel branch pipe has bending structure.

2. The outdoor unit of claim 1, wherein,

the branch pipe only comprises a capillary tube, one end of the capillary tube is connected with the branch head, the other end of the capillary tube is connected with the heat exchange flat pipe, and the capillary tube has a bending structure;

or, the reposition of redundant personnel branch pipe includes capillary and reposition of redundant personnel connecting pipe, the one end of capillary with the reposition of redundant personnel head is connected, the other end of capillary with the reposition of redundant personnel connecting pipe is connected, the other end of reposition of redundant personnel connecting pipe with flat union coupling of heat transfer, the reposition of redundant personnel connecting pipe has bending structure.

3. The outdoor unit of claim 2, wherein,

a plurality of the capillaries in each of the manifold assemblies having a wall thickness gauge of 2-4;

when the shunt branch pipes comprise shunt connecting pipes, the pipe diameters and the wall thicknesses of the shunt connecting pipes are the same.

4. An outdoor unit of an air conditioner according to claim 1,

in the same flow distribution assembly, one ends of a plurality of flow distribution branch pipes are arranged along the circumferential direction of the flow distribution head at intervals in sequence, the other ends of the flow distribution branch pipes are arranged along the height direction of the heat exchange flat pipe group at intervals in sequence, and the shapes of the flow distribution branch pipes are different.

5. The outdoor unit of claim 4, wherein,

and in the plurality of branch pipes connected with the same flow dividing head, the bending structures of the branch pipes are staggered and positioned at different height positions.

6. The outdoor unit of claim 4, wherein,

in the same flow dividing assembly, the parts of the capillaries close to the flow dividing head are straight pipes, and the straight pipe parts of the capillaries are parallel to each other and are bundled together.

7. The outdoor unit of an air conditioner according to any one of claims 1 to 6,

the bending structure of the branch flow distribution pipe is of an L-shaped structure or a square-shaped structure.

8. The outdoor unit of an air conditioner according to any one of claims 1 to 6,

the part of the branch pipe connected with the heat exchanger is a straight pipe, and the straight pipe is parallel to the heat exchange flat pipe.

9. The outdoor unit of an air conditioner according to any one of claims 1 to 6,

the heat exchanger is a G-shaped heat exchanger and is circumferentially arranged along an internal installation space of the outdoor unit, the heat exchanger comprises an L-shaped main body part, a first bending part and a second bending part, the first bending part is arranged on one side of the L-shaped main body part, and the second bending part is arranged on the other side of the L-shaped main body part;

the plurality of the flow dividing assemblies are arranged at the middle position close to one side of the first bending part, and the plurality of the flow dividing assemblies are positioned at the inner side of the G-shaped heat exchanger.

10. The outdoor unit of claim 9, wherein,

the plurality of flow dividing heads are staggered from each other in the front-rear direction and also staggered from each other in the left-right direction.

Images