CN218721919U - Air condensing units and air conditioner - Google Patents

Abstract

The application relates to the technical field of air conditioning equipment, and discloses an air condensing units and air conditioner, heat exchanger among this air condensing units includes: the fin structure comprises a first fin unit and a second fin unit, wherein the second fin unit is arranged on the inner side of the first fin unit; at least two groups of heat exchange tube sets are sequentially distributed from top to bottom, and two heat exchange branch tubes in each heat exchange tube set respectively and sequentially penetrate through the first fin unit and the second fin unit in a crossed manner and are integrally bent and extend downwards; the first flow dividing pipe group is provided with a first liquid collecting port and a plurality of first liquid dividing ports which are connected with the first ports of the heat exchange branch pipes in a one-to-one correspondence mode; and the second shunting pipe group is provided with a second liquid collecting port and a plurality of second liquid distributing ports which are connected with the second ports of the heat exchange branch pipes in a one-to-one correspondence manner. The beneficial effect of this application does: effectively improve heat exchange efficiency to solve the poor problem of reverse heat exchange efficiency.

Description

Air condensing units and air conditioner

Technical Field

The application relates to the technical field of air conditioning equipment, in particular to an air conditioner outdoor unit and an air conditioner.

Background

Currently, the energy saving of the air conditioner is more and more concerned, and in order to improve the efficiency of the air conditioner, the heat exchange area of the heat exchanger is generally increased. For the dual-purpose air conditioner for cooling and heating, the outdoor unit usually adopts two or more rows of heat exchangers, and when two or more rows of heat exchangers are adopted, the influence of factors such as wind resistance and gravity on the heat exchange efficiency needs to be fully considered, the heat exchange effect in the prior art is poor, and the heat exchange efficiency of the heat exchangers in the cooling mode and the heating mode is difficult to be balanced, so that the reverse heat exchange efficiency is poor, the dual-purpose air conditioner for cooling and heating can only achieve a better effect in a certain state in the cooling or heating mode, the overall effect is not high, the power consumption is large, and the economical efficiency of the use of the air conditioner is hindered.

SUMMERY OF THE UTILITY MODEL

An aim at of this application provides an air condensing units, it can reach the effect that whole heat exchange efficiency is high, and solves the poor problem of reverse heat exchange efficiency. Another object of the present invention is to provide an air conditioner including the outdoor unit of the air conditioner.

The purpose of the application is realized by the following technical scheme:

an outdoor unit of an air conditioner, comprising:

the heat exchanger comprises a shell, a heat exchange air inlet and a heat exchange air outlet, wherein the shell is provided with the heat exchange air inlet and the heat exchange air outlet;

the fan is arranged in the shell, and the operation of the fan leads the airflow outside the shell into the shell from the heat exchange air inlet and outputs the airflow outwards from the heat exchange air outlet; and

the heat exchanger is arranged in the shell and positioned on the periphery of the rear side of the fan, and is used for exchanging heat with the airflow; the heat exchanger includes:

the fin group comprises a first fin unit and a second fin unit, the first fin unit and the second fin unit are formed by sequentially stacking a plurality of fins, and the second fin unit is arranged on the inner side of the first fin unit;

the heat exchange tube group comprises at least two groups of heat exchange tube groups, wherein the at least two groups of heat exchange tube groups are sequentially distributed from top to bottom, each heat exchange tube group comprises two heat exchange branch tubes, the upper ends and the lower ends of the heat exchange branch tubes are respectively provided with a first port and a second port, the first ports and the second ports are respectively arranged on the first end surfaces of the fin groups, the two first ports and the two second ports in each heat exchange tube group are respectively arranged on the first fin unit and the second fin unit, and the two heat exchange branch tubes in each heat exchange tube group respectively penetrate through the first fin unit and the second fin unit in sequence in a crossed manner and are integrally bent and extended downwards;

the first shunt pipe group is provided with a first liquid collecting port and a plurality of first liquid distributing ports which are connected with the first ports in a one-to-one correspondence mode; and

and the second shunting pipe assembly is provided with a second liquid collecting port and a plurality of second liquid dividing ports which are connected with the second ports in a one-to-one correspondence manner.

Based on above-mentioned technical scheme, utilize the multiunit from last to the heat transfer pipe group that distributes down, with the heat transfer space from last to carrying out the piecemeal down, and all include two in each heat transfer pipe group and be alternately wear to locate each fin unit's heat transfer branch pipe in proper order to can make everywhere the homoenergetic good heat transfer effect, thereby improve whole heat exchange efficiency, can also solve the poor problem of reverse heat transfer simultaneously.

In some embodiments of the present application, the heat exchanger is provided with two sets of the heat exchange tube sets, and two first ports and two second ports of each set of the heat exchange tube sets are respectively arranged in a one-to-one opposite manner; simple structure and convenient realization.

In some embodiments of the present application, the first flow dividing tube group is located at the first end face of the fin group, and the first flow dividing tube group includes:

the first tee joint is provided with a first interface, a second interface and a third interface, and the first interface is the first liquid collecting port; and

and one ends of two of the branch pipes are communicated with the second interface, the other ends of the two branch pipes are respectively communicated with two first ports of one group of the heat exchange pipe sets, one ends of the other two branch pipes are communicated with the third interface, and the other ends of the other two branch pipes are respectively communicated with two first ports of the other group of the heat exchange pipe sets.

In some embodiments of the present application, the heat exchange tube group located at the upper side is defined as an upper side heat exchange tube group, and the heat exchange tube group located at the lower side is defined as a lower side heat exchange tube group; the second shunt tube group comprises:

the two ends of the second three-way joint are respectively communicated to the two second ports of the upper heat exchange tube group;

the two ends of the third three-way joint are respectively communicated to the two second ports of the lower heat exchange tube group;

the fourth tee joint is positioned on the first end surface of the fin group and is arranged below the third tee joint;

one end of the first connecting pipe is communicated to the other end of the second three-way joint, and the other end of the first connecting pipe is communicated to the first end of the fourth three-way joint;

one end of the second connecting pipe is communicated to the other end of the third three-way joint, and the other end of the second connecting pipe is communicated to the second end of the fourth three-way joint; and

and one end of the liquid collecting pipe is communicated with the third end of the fourth three-way joint, and the other end of the liquid collecting pipe is the second liquid collecting port.

In some embodiments of the present application, the liquid collection tube comprises:

one end of the bending section is communicated with the third end of the fourth tee joint and sequentially penetrates through the first fin unit and the second fin unit; and

and the leading-out section is positioned on the first end surface of the fin group, one end of the leading-out section is communicated with the other end of the bending section, and the other end of the leading-out section is the second liquid collecting port.

In some embodiments of the present application, the bending section includes a lower extending portion and an upper extending portion, one end of the lower extending portion is communicated with the third end of the fourth three-way joint, one end of the upper extending portion is communicated with the other end of the lower extending portion, and the other end of the upper extending portion is communicated with one end of the guiding section;

the lower extension portion and the upper extension portion respectively penetrate through the first fin unit and the second fin unit, the lower extension portion extends downwards integrally, and the upper extension portion extends upwards integrally.

In some embodiments of the present application, the heat exchange branch pipe includes:

the first heat exchange section is bent and penetrates through the first fin unit;

the second heat exchange section is bent and penetrates through the second fin unit, and the second heat exchange section and the first heat exchange section are arranged in a vertically staggered manner; and

the connecting U pipe is connected with the first heat exchange section and the second heat exchange section so as to realize the flow guide of the heat exchange branch pipe between the first fin unit and the second fin unit;

in the two heat exchange branch pipes of each heat exchange pipe set, the connecting U pipes are correspondingly arranged one by one and mutually dodged, so that the connecting U pipes are not overlapped at the tops of the first end surfaces of the fin sets.

In some embodiments of the present application, the first fin unit includes a first heat exchanging portion formed by stacking a plurality of fins in a left-right direction, and a second heat exchanging portion formed by stacking a plurality of fins in a front-rear direction, and a rear edge of the second heat exchanging portion is connected to a left edge of the first heat exchanging portion;

the second fin unit is formed by overlapping a plurality of fins along the left-right direction and is arranged on the front side of the first heat exchanging part.

In some embodiments of the present application, the outdoor unit of an air conditioner further includes:

the compressor is arranged in the shell; and

and the four-way valve is respectively connected with the compressor and the first liquid separation port through pipelines.

An air conditioner, comprising:

an outdoor unit of an air conditioner according to any one of the above claims.

Drawings

The present application is described in further detail below in connection with the accompanying drawings and preferred embodiments, but those skilled in the art will appreciate that the drawings are only drawn for the purpose of explaining the preferred embodiments, and therefore should not be taken as limiting the scope of the present application. Furthermore, unless specifically stated otherwise, the drawings are intended to be conceptual in nature or configuration of the described objects and may contain exaggerated displays and are not necessarily drawn to scale.

Fig. 1 is a schematic view illustrating an outdoor unit of an air conditioner according to some embodiments of the present application;

fig. 2 is a schematic view illustrating a heat exchanger of an outdoor unit of an air conditioner according to some embodiments of the present application;

fig. 3 is a schematic view illustrating a flow direction of refrigerant inside a heat exchanger when an outdoor unit of an air conditioner is in a cooling mode according to some embodiments of the present application;

fig. 4 is a schematic view illustrating a flow direction of refrigerant inside a heat exchanger when an outdoor unit of an air conditioner according to some embodiments of the present application is in a heating mode;

fig. 5 is a schematic view illustrating an air flow direction of an outdoor unit of an air conditioner according to some embodiments of the present application;

FIG. 6 is an enlarged schematic view of part A of FIG. 2;

FIG. 7 is an enlarged view of part B of FIG. 6;

fig. 8 is a partially enlarged view of portion C of fig. 6.

In the figure, 100, a heat exchanger; 1. a first fin unit; 11. a first heat exchanging portion; 12. a second heat exchanging part; 2. a second fin unit; 3. a heat exchange tube set; 31. a heat exchange branch pipe; 311. a first port; 312. a second port; 313. a first heat exchange section; 314. a second heat exchange section; 315. connecting a U pipe; 32. an upper heat exchange tube group; 33. a lower heat exchange tube set; 4. a first flow diversion tube group; 41. a first liquid collecting port; 42. a first liquid separation port; 43. a first three-way joint; 44. a branch pipe; 5. a second manifold group; 51. a second liquid collecting port; 52. a second liquid separation port; 53. a second three-way joint; 54. a third three-way joint; 55. a fourth three-way joint; 56. a first connecting pipe; 57. a second connecting pipe; 58. a liquid collecting pipe; 581. bending sections; 5811. a lower extension; 5812. an upper extension part; 582. a lead-out segment;

200. a fan;

300. a compressor;

400. a four-way valve;

500. a casing.

Detailed Description

Hereinafter, preferred embodiments of the present application will be described in detail with reference to the accompanying drawings. Those skilled in the art will appreciate that the descriptions are illustrative only, exemplary, and should not be construed as limiting the scope of the application.

First, it should be noted that the orientations of top, bottom, upward, downward, and the like referred to herein are defined with respect to the orientation in the respective drawings, are relative concepts, and thus can be changed according to different positions and different practical situations in which they are located. These and other orientations, therefore, should not be used in a limiting sense.

It should be noted that the term "comprising" does not exclude other elements or steps and the "a" or "an" does not exclude a plurality.

Furthermore, it should be further noted that any single technical feature described or implied in the embodiments herein, or any single technical feature shown or implied in the figures, can still be combined between these technical features (or their equivalents) to obtain other embodiments of the present application not directly mentioned herein.

It will be further understood that the terms "first," "second," and the like, are used herein to describe various information and should not be limited to these terms, which are used merely to distinguish one type of information from another. For example, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information, without departing from the scope of the present application.

It should be noted that in different drawings, the same reference numerals denote the same or substantially the same components.

The air conditioner performs a refrigeration cycle through a compressor, a condenser, an expansion valve, and an evaporator in the present application. The refrigeration cycle includes a series of processes involving compression, condensation, expansion and evaporation, and the air, which has been conditioned and heat exchanged by the refrigerator, supplies the refrigerant.

The compressor compresses a refrigerant gas in a high-temperature and high-pressure state and discharges the compressed refrigerant gas. 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 liquid-phase refrigerant in a high-temperature and high-pressure state 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 exchange 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 is used as a condenser, the air conditioner is used as a heater in a heating mode, and when the indoor heat exchanger is used as an evaporator, the air conditioner is used as a cooler in a cooling mode.

An embodiment of the present application provides an air conditioner, an outdoor unit of the air conditioner includes a casing 500, and a heat exchanger 100, a fan 200, a compressor 300, and a four-way valve 400 disposed in the casing 500, which are specifically shown in fig. 1 to 8.

The heat exchanging air inlet and the heat exchanging air outlet are arranged on the casing 500, which are not specifically shown in the drawings, the heat exchanging air inlet is arranged on the back surface of the casing 500, and the heat exchanging air outlet is arranged on the front side surface of the casing 500.

The heat exchanger 100 is disposed on the outer periphery of the rear side of the fan 200, and the fan 200 is capable of introducing airflow outside the casing 500 into the casing 500 from the rear to the front through the heat exchange air inlet, performing heat exchange with the heat exchanger 100, and outputting the airflow from the heat exchange air outlet to the front, that is, the outer side of the heat exchanger 100 is the downwind side, and the inner side of the heat exchanger 100 is the leeward side.

The compressor 300 is disposed at the left side of the heat exchanger 100, and the four-way valve 400 is connected to the compressor 300 and the heat exchanger 100 through a pipeline, respectively, and switching between a cooling mode and a heating mode of the indoor space by the air conditioner can be realized by switching the operating position of the four-way valve 400.

Specifically, in some embodiments of the present application, the heat exchanger 100 includes: the heat exchanger comprises a fin group, at least two groups of heat exchange tube groups 3, a first shunt tube group 4 and a second shunt tube group 5; the fin group comprises a first fin unit 1 and a second fin unit 2, the first fin unit 1 and the second fin unit 2 are formed by sequentially overlapping a plurality of fins, and the second fin unit 2 is arranged on the inner side of the first fin unit 1; at least two groups of heat exchange tube sets 3 are distributed in sequence from top to bottom, each heat exchange tube set 3 comprises two heat exchange branch tubes 31, the upper end and the lower end of each heat exchange branch tube 31 are respectively provided with a first port 311 and a second port 312, the first port 311 and the second port 312 are respectively arranged on the first end surface of each fin set, the two first ports 311 and the two second ports 312 in each heat exchange tube set 3 are respectively arranged on the first fin unit 1 and the second fin unit 2, and the two heat exchange branch tubes 31 in each heat exchange tube set 3 respectively pass through the first fin unit 1 and the second fin unit 2 in sequence in a crossed manner and are bent integrally and extend downwards; the first branch pipe group 4 has a first liquid collecting port 41 and a plurality of first liquid dividing ports 42 connected to the first ports 311 in a one-to-one correspondence, and the first liquid collecting port 41 is connected to the four-way valve 400 through a pipeline; the second flow dividing pipe group 5 has a second liquid collecting port 51 and a plurality of second liquid dividing ports 52 connected to the second ports 312 in a one-to-one correspondence manner, and the second flow dividing pipe is connected to the indoor air conditioning unit through a pipeline.

In the application, the heat exchanger 100 in the outdoor unit of the air conditioner comprises at least two groups of heat exchange tube groups 3 which are sequentially arranged from top to bottom, namely, the whole heat exchange space of the heat exchanger 100 is firstly divided into a plurality of parts corresponding to the number of the heat exchange tube groups 3 from top to bottom, so that the heat exchange efficiency of each part of the condenser from top to bottom can be equalized; in addition, because the first fin unit 1 is the downwind side, and the second fin unit 2 is the leeward side, compared with the second fin unit 2, the air volume at the position where the first fin unit 1 is located is larger, and a better heat exchange effect can be obtained, in the present application, two heat exchange branches in each heat exchange tube group 3 respectively pass through the first fin unit 1 and the second fin unit 2 in sequence in a crossing manner, that is, each heat exchange branch passes through the first fin unit 1, the second fin unit 2, the first fin unit 1 and the … in sequence, so that the inner layer and the outer layer are penetrated in sequence in a crossing manner, and thus the heat exchange efficiency of the first fin unit 1 and the second fin unit 2 is equalized; therefore, the heat exchanger 100 in the air-conditioning outdoor heat exchanger 100 in the present application is balanced in heat exchange from top to bottom and in heat exchange from inside to outside, so that the overall heat exchange efficiency of the heat exchanger 100 can be improved.

Specifically, in the cooling mode, the heat exchanger 100 is a condenser, the gaseous refrigerant flows in from the first liquid collecting port 41 of the first branch pipe group 4, and is split into four paths after passing through the first branch pipe group 4, and flows into each heat exchange branch pipe 31, the refrigerant flows along the heat exchange branch pipes 31 from top to bottom, is condensed into a liquid state, flows in from the four second liquid splitting ports 52 of the second branch pipe group 5, and finally flows out from the second liquid collecting port 51 after being collected; in the heating mode, the heat exchanger 100 is an evaporator, the liquid refrigerant flows in from the second liquid collecting port 51 of the second shunt tube group 5, and is shunted into four paths after passing through the second shunt tube group 5 to flow into each heat exchange branch tube 31, the refrigerant flows along the heat exchange branch tubes 31 from bottom to top, is evaporated into a gas state, flows in from the four first liquid separating ports 42 of the first shunt tube group 4, and finally flows out from the first liquid collecting port 41 after being collected; experiments show that the outdoor heat exchanger 100 in the embodiment of the present application can achieve better heat exchange efficiency in both the refrigeration mode and the heating mode by setting the plurality of sets of heat exchange tube sets 3 and the flow direction of each heat exchange branch, and effectively solves the problem of poor reverse heat exchange.

In some embodiments of the present application, referring to fig. 1 and fig. 2 in particular, in order to take account of heat exchange efficiency and manufacturing cost, and also in consideration of manufacturing difficulty, two sets of heat exchange tube sets 3 are disposed in the heat exchanger 100, two first ports 311 and two second ports 312 in each set of heat exchange tube sets 3 are disposed in a one-to-one opposite manner, that is, the two first ports 311 in each set of heat exchange tube sets 3 are located at adjacent positions, and the two second ports 312 are also located at adjacent positions, that is, the longitudinal extension lengths of the heat exchange branches are kept substantially the same.

Referring to fig. 2, in a case where the installation space requirement of the heat exchanger 100 is generally low at the upper left end of the outdoor unit of the air conditioner, the first flow dividing pipe group 4 may be disposed at the first end surface of the fin group, and the first flow dividing pipe group 4 includes: the heat exchanger comprises a first three-way joint 43 and four branch pipes 44, wherein the first three-way joint 43 is provided with a first interface, a second interface and a third interface, the first interface is a first liquid collecting port 41, one ends of two branch pipes 44 are communicated with the second interface, the other ends of the two branch pipes are respectively communicated with two first ports 311 of one group of heat exchange pipe sets 3, one ends of the other two branch pipes 44 are communicated with the third interface, and the other ends of the other two branch pipes are respectively communicated with two first ports 311 of the other group of heat exchange pipe sets 3; that is, the refrigerant flows in from the first connection port of the first three-way joint 43, is divided into four paths, and then flows out from the four branch pipes 44 to the heat exchange branch pipes 31.

For the sake of convenience of the following description, the present application defines the heat exchange tube group 3 located on the upper side as the upper side heat exchange tube group 32, and the heat exchange tube group 3 located on the lower side as the lower side heat exchange tube group 33.

Generally, at the lower end of the left side of the outdoor unit of the air conditioner, the requirement on the installation space of the heat exchanger 100 is more severe, and at this time, in order to compress the space occupied by the left end of the heat exchanger 100, and reduce the production cost and the manufacturing difficulty, the second shunt tube group 5 is configured to include: a second three-way joint 53, a third three-way joint 54, a fourth three-way joint 55, a first connecting pipe 56, a second connecting pipe 57 and a liquid collecting pipe 58; the second three-way joint 53 is located on the first end surface of the fin group, two ends of the second three-way joint 53 are respectively communicated with the two second ports 312 of the upper heat exchange tube group 32, the third three-way joint 54 is located on the first end surface of the fin group, two ends of the third three-way joint 54 are respectively communicated with the two second ports 312 of the lower heat exchange tube group 33, the fourth three-way joint 55 is located on the first end surface of the fin group and is arranged below the third three-way joint 54, one end of the first connecting pipe 56 is communicated with the other end of the second three-way joint 53, the other end of the first connecting pipe 56 is communicated with the first end of the fourth three-way joint 55, one end of the second connecting pipe 57 is communicated with the other end of the third three-way joint 54, the other end of the second connecting pipe 57 is communicated with the second end of the fourth three-way joint 55, one end of the liquid collecting pipe 58 is communicated with the third end of the fourth three-way joint 55, and the other end of the liquid collecting pipe 58 is the second liquid collecting port 51; that is, the refrigerant flowing in through the second header 51 is first divided into two paths by the fourth three-way joint 55, then is further divided into two paths by the third three-way joint 54 and the second three-way joint 53, and finally is divided into four paths to flow into the heat exchange branch pipes 31, that is, the flow dividing process of the second flow dividing pipe group 5 is as follows: one way → two ways → four ways, the shunting can be completed through a tee joint and a connecting pipe which have relatively simple structures, the structure is simple, the manufacturing difficulty is small, and the occupied space of the left end can be reduced.

Further, in order to fully utilize the heat exchange space of the lower part, the header 58 includes: the bending section 581 and the derivation section 582, one end of the bending section 581 is communicated with the third end of the fourth three-way joint 55, and sequentially passes through the first fin unit 1 and the second fin unit 2, the derivation section 582 is located on the first end face of the fin group, one end of the derivation section 582 is communicated with the other end of the bending section 581, and the other end of the derivation section 582 is the second liquid collecting port 51, which is specifically shown in fig. 6.

Further, as shown in fig. 8, the bending section 581 includes a lower extension portion 5811 and an upper extension portion 5812, one end of the lower extension portion 5811 communicates with the third end of the fourth three-way joint 55, one end of the upper extension portion 5812 communicates with the other end of the lower extension portion 5811, the other end of the upper extension portion 5812 communicates with one end of the guiding section 582, the lower extension portion 5811 and the upper extension portion 5812 respectively pass through the first fin unit 1 and the second fin unit 2, the lower extension portion 5811 integrally extends downward, and the upper extension portion 5812 integrally extends upward; the bending sections 581 are also arranged to be crossed and penetrated, so that the heat exchange effect can be improved.

More specifically, in some embodiments of the present application, heat exchange branch pipe 31 includes: a first heat exchange section 313, a second heat exchange section 314 and a connecting U-shaped pipe 315; the first heat exchange section 313 is bent and penetrates through the first fin unit 1, the second heat exchange section 314 is bent and penetrates through the second fin unit 2, the second heat exchange section 314 and the first heat exchange section 313 are arranged in a vertically staggered manner, and the connecting U-shaped pipe 315 is connected with the first heat exchange section 313 and the second heat exchange section 314 so as to realize the flow guide of the heat exchange branch pipe 31 between the first fin unit 1 and the second fin unit 2; in the two heat exchange branch pipes 31 of each heat exchange pipe group 3, the connecting U-shaped pipes 315 are correspondingly arranged one by one and are mutually avoided, so that the connecting U-shaped pipes 315 are not overlapped at the top of the first end surface of the fin group, specifically referring to fig. 7, the space occupancy rate of the heat exchange pipe group 3 protruding out of the fin group is reduced, the heat exchange space is fully utilized, and the heat exchange effect is effectively improved.

For example, in order to avoid the crossing connecting U tubes 315 in height, one of the connecting U tubes 315 is usually pressed down, that is, one of the connecting U tubes 315 can be wound around the outer periphery of the other connecting U tube 315 by bending, so as to avoid overlapping in height to occupy the installation space.

As shown in fig. 5, when the fan 200 is operated, the air driving the outside is sucked into the heat exchanger 100 from the rear side and the left side, respectively, and is finally discharged from the front side, and the air volume entering from the left side is generally smaller than the air volume entering from the rear side; in order to take heat exchange effect and cost into consideration, the first fin units 1 are arranged in a whole row, the second fin units 2 are only arranged in a half row, namely the second fin units 2 only cover the rear side air inlet; specifically, referring to fig. 2, the first fin unit 1 includes a first heat exchanging portion 11 formed by stacking a plurality of fins in a left-right direction, and a second heat exchanging portion 12 formed by stacking a plurality of fins in a front-rear direction, a rear edge of the second heat exchanging portion 12 is connected to a left edge of the first heat exchanging portion 11, and the second fin unit 2 is formed by stacking a plurality of fins in a left-right direction and is disposed at a front side of the first heat exchanging portion 11.

When the air conditioner of the present application is in operation, the refrigerant in the heat exchanger 100 in the outdoor unit of the air conditioner flows as follows:

in the cooling mode, after flowing in from the first liquid collecting port 41, the refrigerant flows into each heat exchange branch pipe 31 from each first port 311 through four paths divided by the first branch pipe group 4, flows out from the second port 312 through the two heat exchange branch pipes 31 of the upper heat exchange pipe group 32, is collected into one path through the second three-way joint 53, and then flows into the fourth three-way joint 55 through the first connecting pipe 56; after flowing out of the second port 312 through the two heat exchange branch pipes 31 of the lower heat exchange pipe set 33, they are collected into one path through the third three-way joint 54, and then flow into the fourth three-way joint 55 through the second connecting pipe 57; the fourth three-way joint 55 merges the two branches into one branch, and finally flows through the bending section 581 and the lead-out section 582 in sequence and finally flows out from the second liquid collecting port 51 of the lead-out section 582;

in the heating mode, the refrigerant flows in the following directions: after flowing in from the second liquid collecting port 51, the fluid flows through the guiding-out section 582 and the bending section 581 in sequence, and is divided into two paths by the fourth three-way joint 55, and one path of branch flowing out from the fourth three-way joint 55 flows through the first connecting pipe 56 and flows into the second three-way joint 53, and is divided into two paths by the second three-way joint 53 and then flows into the two heat exchange branch pipes 31 of the upper heat exchange pipe group 32 in sequence; the other branch flow flowing out of the fourth three-way joint 55 flows into the third three-way joint 54 through the second connecting pipe 57, is divided into two paths by the third three-way joint 54, and then sequentially flows into the two heat exchange branch pipes 31 of the lower heat exchange pipe group 33; the refrigerant after heat exchange through each heat exchange branch pipe 31 finally flows into the first branch pipe group 4, and finally is converged into one path to flow out from the first liquid collecting port 41.

The air conditioner and the outdoor unit of the air conditioner in the embodiment of the application can effectively improve the overall heat exchange efficiency of the heat exchanger 100 and solve the problem of poor reverse heat exchange.

This written description discloses the application with reference to the drawings, and also enables one skilled in the art to practice the application, including making and using any devices or systems, using suitable materials, and using any incorporated methods. The scope of the present application is defined by the claims and includes other examples that occur to those skilled in the art. Such other examples are to be considered within the scope of the claims as long as they include structural elements that do not differ from the literal language of the claims, or that they include equivalent structural elements with insubstantial differences from the literal language of the claims.

Claims (10)

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

the heat exchanger comprises a shell, a heat exchanger and a heat exchanger, wherein a heat exchange air inlet and a heat exchange air outlet are formed in the shell;

the fan is arranged in the shell, and the operation of the fan leads the airflow outside the shell into the shell from the heat exchange air inlet and outputs the airflow outwards from the heat exchange air outlet; and

the heat exchanger is arranged in the shell and positioned on the periphery of the rear side of the fan, and is used for exchanging heat with the airflow;

characterized in that the heat exchanger comprises:

the fin group comprises a first fin unit and a second fin unit, the first fin unit and the second fin unit are formed by sequentially stacking a plurality of fins, and the second fin unit is arranged on the inner side of the first fin unit;

the heat exchange tube group comprises at least two groups of heat exchange tube groups, wherein the at least two groups of heat exchange tube groups are sequentially distributed from top to bottom, each heat exchange tube group comprises two heat exchange branch tubes, the upper ends and the lower ends of the heat exchange branch tubes are respectively provided with a first port and a second port, the first ports and the second ports are respectively arranged on the first end surfaces of the fin groups, the two first ports and the two second ports in each heat exchange tube group are respectively arranged on the first fin unit and the second fin unit, and the two heat exchange branch tubes in each heat exchange tube group respectively penetrate through the first fin unit and the second fin unit in sequence in a crossed manner and are integrally bent and extended downwards;

the first shunt pipe group is provided with a first liquid collecting port and a plurality of first liquid distributing ports which are connected with the first ports in a one-to-one correspondence mode; and

and the second shunting pipe group is provided with a second liquid collecting port and a plurality of second liquid distributing ports which are connected with the second ports in a one-to-one correspondence manner.

2. The outdoor unit of claim 1, wherein the heat exchanger is provided with two sets of the heat exchange tube sets, and two first ports and two second ports of the heat exchange tube sets are respectively arranged in a one-to-one opposite manner.

3. The outdoor unit of claim 2, wherein the first flow dividing pipe group is located at the first end surface of the fin group, and the first flow dividing pipe group comprises:

the first tee joint is provided with a first interface, a second interface and a third interface, and the first interface is the first liquid collecting port; and

and one ends of two of the branch pipes are communicated with the second interface, the other ends of the two branch pipes are respectively communicated with two first ports of one group of the heat exchange pipe sets, one ends of the other two branch pipes are communicated with the third interface, and the other ends of the other two branch pipes are respectively communicated with two first ports of the other group of the heat exchange pipe sets.

4. The outdoor unit of claim 2, wherein the heat exchange tube group positioned at an upper side is defined as an upper side heat exchange tube group, and the heat exchange tube group positioned at a lower side is defined as a lower side heat exchange tube group; the second shunt tube group comprises:

the two ends of the second three-way joint are respectively communicated to the two second ports of the upper heat exchange tube group;

the third three-way joint is positioned on the first end surface of the fin group, and two ends of the third three-way joint are respectively communicated to two second ports of the lower heat exchange tube group;

the fourth tee joint is positioned on the first end surface of the fin group and is arranged below the third tee joint;

one end of the first connecting pipe is communicated to the other end of the second three-way joint, and the other end of the first connecting pipe is communicated to the first end of the fourth three-way joint;

one end of the second connecting pipe is communicated to the other end of the third three-way joint, and the other end of the second connecting pipe is communicated to the second end of the fourth three-way joint; and

and one end of the liquid collecting pipe is communicated with the third end of the fourth three-way joint, and the other end of the liquid collecting pipe is the second liquid collecting port.

5. The outdoor unit of claim 4, wherein the liquid collecting pipe comprises:

one end of the bending section is communicated with the third end of the fourth tee joint and sequentially penetrates through the first fin unit and the second fin unit; and

and the leading-out section is positioned on the first end surface of the fin group, one end of the leading-out section is communicated with the other end of the bending section, and the other end of the leading-out section is the second liquid collecting port.

6. The outdoor unit of claim 5, wherein the bent section comprises a lower extension part and an upper extension part, one end of the lower extension part is communicated with the third end of the fourth tee joint, one end of the upper extension part is communicated with the other end of the lower extension part, and the other end of the upper extension part is communicated with one end of the lead-out section;

the lower extension portion and the upper extension portion respectively penetrate through the first fin unit and the second fin unit, the lower extension portion extends downwards integrally, and the upper extension portion extends upwards integrally.

7. The outdoor unit of claim 1, wherein the heat exchange branch pipes comprise:

the first heat exchange section is bent and penetrates through the first fin unit;

the second heat exchange section is bent and penetrates through the second fin unit, and the second heat exchange section and the first heat exchange section are arranged in a vertically staggered manner; and

the connecting U pipe is connected with the first heat exchange section and the second heat exchange section so as to realize the flow guide of the heat exchange branch pipe between the first fin unit and the second fin unit;

in the two heat exchange branch pipes of each heat exchange pipe set, the connecting U pipes are correspondingly arranged one by one and mutually dodged, so that the connecting U pipes are not overlapped at the tops of the first end surfaces of the fin sets.

8. The outdoor unit of any one of claims 1 to 7, wherein the first fin unit includes a first heat exchanging part formed by stacking a plurality of fins in a left-right direction and a second heat exchanging part formed by stacking a plurality of fins in a front-rear direction, and a rear edge of the second heat exchanging part is connected to a left edge of the first heat exchanging part;

the second fin unit is formed by overlapping a plurality of fins along the left-right direction and is arranged on the front side of the first heat exchanging part.

9. The outdoor unit of an air conditioner according to any one of claims 1 to 7, further comprising:

the compressor is arranged in the shell; and

and the four-way valve is respectively connected with the compressor and the first liquid separation port through pipelines.

10. An air conditioner, comprising:

the outdoor unit of any one of claims 1 to 9.

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