CN216716627U

CN216716627U - Heat exchanger and air conditioner

Info

Publication number: CN216716627U
Application number: CN202122677494.5U
Authority: CN
Inventors: 丁爽; 王飞; 李阳; 张心怡; 袁俊军
Original assignee: Qingdao Haier Air Conditioner Gen Corp Ltd; Qingdao Haier Air Conditioning Electric Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Air Conditioner Gen Corp Ltd; Qingdao Haier Air Conditioning Electric Co Ltd; Haier Smart Home Co Ltd
Priority date: 2021-09-19
Filing date: 2021-11-03
Publication date: 2022-06-10
Anticipated expiration: 2031-11-03
Also published as: CN216745036U; CN114165946A; CN217817557U; CN216977244U; CN216694079U; CN216694107U; CN116045486A; CN217357662U; CN216694086U; CN216716629U; CN216814680U; CN217357660U; CN216744999U; CN216694084U; CN216694081U; CN217357659U; CN216694077U; CN216716628U; CN216694088U; CN216694076U

Abstract

The application relates to the technical field of air conditioners and discloses a heat exchanger which comprises a first main pipeline, a second main pipeline, a first heat exchange passage, a second heat exchange passage, a third heat exchange passage, a fourth heat exchange passage, a fifth heat exchange passage, a sixth heat exchange passage, a first bypass pipeline, a second bypass pipeline, a third bypass pipeline, a fourth bypass pipeline, a fifth bypass pipeline and a sixth bypass pipeline. Wherein, the first bypass pipeline to the sixth bypass pipeline are respectively provided with a one-way valve. When the refrigerant enters the heat exchanger from the first main pipeline for circulation, the circulation path of the refrigerant in the heat exchanger can be effectively shortened, and the rapid circulation of the refrigerant is facilitated; when the refrigerant gets into the heat exchanger circulation from the second main line, can prolong the circulation path of refrigerant in the heat exchanger and long when circulating, reduced the pressure drop in the heat exchanger. The application also discloses an air conditioner.

Description

Heat exchanger and air conditioner

The priority of chinese patent application entitled "dispenser, check valve, heat exchanger, refrigeration cycle system, air conditioner," filed in 2021, No. 9/19, application No. 202122281454.9, is hereby incorporated by reference in its entirety.

Technical Field

The application relates to the technical field of air conditioners, for example to a heat exchanger and an air conditioner.

Background

At present, an air conditioner generally comprises a refrigerant circulation loop consisting of a compressor, an outdoor heat exchanger, a throttling device, a four-way valve and an indoor heat exchanger, and the flow direction of a refrigerant in the refrigerant circulation loop is changed by the four-way valve, so that the refrigeration function and the heating function of the air conditioner are respectively realized.

The heat exchanger is downward in heating flow, a refrigerant in a heat exchange tube is positioned in a high-temperature and high-pressure area and is insensitive to pressure drop, and the heat transfer performance is mainly influenced by a heat transfer coefficient, so that the heat exchange tube is suitable for adopting fewer branches to accelerate circulation and increase the heat transfer coefficient; the heat exchanger has downward refrigerating flow, the refrigerant in the heat exchange tube is in a low-temperature and low-pressure area, and the heat transfer performance is mainly constrained by the heat transfer coefficient and the pressure drop, so that the heat exchange tube is suitable for adopting more branches, the heat transfer coefficient is ensured, and the pressure drop is greatly reduced to improve the system pressure.

The prior art discloses a heat exchanger, and this heat exchanger adopts shunt tubes or shunt to carry out the reposition of redundant personnel design to make the heat exchanger more branches of refrigerant flow through downwards at the refrigeration flow, prolonged the circulation route of refrigerant, reduced the pressure drop, promoted the heat exchanger and made the downward performance of refrigeration flow.

In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:

when the heat exchanger is downward in heating flow, the flow direction of the refrigerant circulation loop is changed, at the moment, the refrigerant needs to reversely flow along a downward flow path of the refrigerant flow of the heat exchanger, at the moment, the flow path is long, the refrigerant is not favorable for quick circulation, and the integral heat exchange efficiency of the air conditioner is reduced.

SUMMERY OF THE UTILITY MODEL

The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview nor is intended to identify key/critical elements or to delineate the scope of such embodiments but rather as a prelude to the more detailed description that is presented later.

The embodiment of the disclosure provides a heat exchanger and an air conditioner, which are used for solving the problem of how to enable the heat exchanger to extend a refrigerant flow path downwards in a refrigeration flow direction and shorten the refrigerant flow path downwards in a heating flow direction.

In some embodiments, the heat exchanger comprises:

the first main pipeline is communicated with the first shunt element;

the second main pipeline is communicated with the second shunt element;

a first heat exchange passage, the first end of which is communicated with the third flow dividing element and the second end of which is communicated with the fourth flow dividing element; and the third dividing element is in communication with the first dividing element;

a first end of the second heat exchange passage is communicated with the fourth flow dividing element, and a second end of the second heat exchange passage is communicated with the fifth flow dividing element;

a first end of the third heat exchange passage is communicated with the sixth flow dividing element, and a second end of the third heat exchange passage is communicated with the second flow dividing element;

a first end of the fourth heat exchange passage is communicated with the seventh shunt element, and a second end of the fourth heat exchange passage is communicated with the eighth shunt element; and the seventh shunt element is communicated with the first shunt element;

a fifth heat exchange passage, a first end of which is communicated with the eighth flow dividing element, and a second end of which is communicated with the ninth flow dividing element;

a sixth heat exchange path having a first end connected to the tenth flow element and a second end connected to the second flow dividing element;

a first bypass pipeline, a first end of which is communicated with the fifth flow dividing element, and a second end of which is communicated with the sixth flow dividing element;

a first end of the second bypass pipeline is communicated with the fourth shunt element, and a second end of the second bypass pipeline is communicated with the sixth shunt element;

a third bypass pipeline, a first end of which is communicated with the third flow dividing element, and a second end of which is communicated with the fifth flow dividing element;

a fourth bypass line, a first end of which is communicated with the ninth flow dividing element, and a second end of which is communicated with the tenth flow dividing element;

a fifth bypass line, a first end of which is communicated with the eighth shunt element, and a second end of which is communicated with the tenth shunt element;

a sixth bypass line, a first end of which is communicated with the seventh shunt element, and a second end of which is communicated with the ninth shunt element;

a first check valve provided in the first bypass line, and a direction of conduction of the first check valve is defined to flow from the fifth flow dividing element to the sixth flow dividing element;

the second one-way valve is arranged in the second bypass pipeline, and the conduction direction of the second one-way valve is limited to flow from the sixth flow dividing element to the fourth flow dividing element;

a third check valve disposed in the third bypass line, and a direction of conduction of the third check valve is defined to flow from the fifth shunting element to the third shunting element;

a fourth check valve disposed in the fourth bypass line, and a direction of conduction of the fourth check valve is defined to flow from the ninth flow dividing element to the tenth flow dividing element;

a fifth check valve disposed in the fifth bypass line, and a direction of conduction of the fifth check valve is defined to flow from the tenth flow dividing element to the eighth flow dividing element;

and a sixth check valve disposed in the sixth bypass line, and a conduction direction of the sixth check valve is defined to flow from the ninth flow dividing element to the seventh flow dividing element.

Optionally, the third flow dividing element is communicated with the first flow dividing element through a first branch pipeline, and the seventh flow dividing element is communicated with the first flow dividing element through a second branch pipeline;

wherein the height of the first branch pipeline is greater than the height of the second branch pipeline.

Optionally, the height of the first flow dividing element is greater than the height of the second flow dividing element.

Optionally, the first main pipeline has a height greater than the second main pipeline.

Optionally, the first heat exchange passage, the second heat exchange passage, the third heat exchange passage, the fourth heat exchange passage, the fifth heat exchange passage, and the sixth heat exchange passage are sequentially arranged from top to bottom.

Optionally, the first heat exchange path includes:

the heat exchange tubes form a U-shaped refrigerant circulation path with an upward opening or a downward opening.

Optionally, the second heat exchange path comprises:

Optionally, the third heat exchange path includes:

the heat exchange tubes form an N-shaped refrigerant circulation path.

The air conditioner comprises a refrigerant circulating loop at least composed of an indoor heat exchanger, an outdoor heat exchanger, a compressor and a four-way valve; wherein the indoor heat exchanger and/or the outdoor heat exchanger is/are the heat exchanger described in any of the above embodiments.

Optionally, the outdoor heat exchanger is the heat exchanger;

in a cooling mode, the first main pipeline of the outdoor heat exchanger is communicated with the exhaust port of the compressor, and the second main pipeline of the outdoor heat exchanger is communicated with the indoor heat exchanger;

in the heating mode, the second main pipeline of the outdoor heat exchanger is communicated with the indoor heat exchanger, and the first main pipeline of the outdoor heat exchanger is communicated with the air suction port of the compressor.

The heat exchanger and the air conditioner provided by the embodiment of the disclosure can realize the following technical effects:

when the refrigerant enters the first flow dividing element from the first main pipeline, the refrigerant in the heat exchanger flows in a heating flow direction, and the flow path of the refrigerant comprises a first heat exchange path, a second heat exchange path, a third heat exchange path, a fourth heat exchange path, a fifth heat exchange path, a sixth heat exchange path, a first bypass pipeline and a fourth bypass pipeline. And the first heat exchange passage, the second heat exchange passage, the first bypass pipeline and the third heat exchange passage form a first series passage. And the fourth heat exchange passage, the fifth heat exchange passage, the fourth bypass pipeline and the sixth heat exchange passage form a second series passage. Therefore, the circulation path of the refrigerant in the heat exchanger is effectively shortened, the rapid circulation of the refrigerant is facilitated, and the performance of the heat exchanger is improved.

When the refrigerant enters the second flow dividing element from the second main pipeline, the refrigerant in the heat exchanger circulates in a refrigerating flow direction, the circulation path of the refrigerant comprises a first heat exchange path, a second heat exchange path, a third heat exchange path, a fourth heat exchange path, a fifth heat exchange path, a sixth heat exchange path, a second bypass path, a third bypass path, a fifth bypass path and a sixth bypass path, the first heat exchange path and the second heat exchange path form a first parallel path, and the fourth heat exchange path and the fifth heat exchange path form a second parallel path. Therefore, the circulation path and the circulation time of the refrigerant in the heat exchanger are effectively prolonged, the pressure drop in the heat exchanger is reduced, and the performance of the heat exchanger is improved.

The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.

Drawings

One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the accompanying drawings and not in limitation thereof, in which elements having the same reference numeral designations are shown as like elements and not in limitation thereof, and wherein:

fig. 1 is a schematic diagram of a refrigerant circulation circuit according to an embodiment of the disclosure;

FIG. 2 is a schematic structural diagram of a heat exchanger provided by an embodiment of the present disclosure;

fig. 3 is a schematic view of a refrigerant flow path of a heat exchanger in a downward heating flow direction according to an embodiment of the disclosure;

fig. 4 is a schematic diagram of a refrigerant flow path of the heat exchanger provided in the embodiment of the present disclosure in which a refrigerant flows downward;

fig. 5 is a schematic diagram illustrating a refrigerant flow path formed by a plurality of heat pipes of the heat exchanger according to the embodiment of the present disclosure.

Reference numerals:

100: a first main pipeline; 101: a first branch line; 102: a second branch pipe; 110: a second main pipeline;

200: a first heat exchange path; 210: a second heat exchange path; 220: a third heat exchange path; 230: a fourth heat exchange path; 240: a fifth heat exchange path; 250: a sixth heat exchange path;

300: a first bypass line; 310: a second bypass line; 320: a third bypass line; 330: a fourth bypass line; 340: a fifth bypass line; 350: a sixth bypass line;

400: a first check valve; 410: a second one-way valve; 420: a third check valve; 430: a fourth check valve; 440: a fifth check valve; 450: a sixth check valve;

500: a first shunt element; 510: a second flow dividing element; 520: a third flow dividing element; 530: a fourth shunt element; 540: a fifth flow dividing element; 550: a sixth shunt element; 560: a seventh shunt element; 570: an eighth shunt element; 580: a ninth shunt element; 590: a tenth flow element;

600: a compressor; 610: an outdoor heat exchanger; 620: an indoor heat exchanger; 630: a throttling device; 640: a casing.

Detailed Description

So that the manner in which the features and elements of the disclosed embodiments can be understood in detail, a more particular description of the disclosed embodiments, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may be practiced without these details. In other instances, well-known structures and devices may be shown in simplified form in order to simplify the drawing.

The terms "first," "second," and the like in the description and in the claims, and the above-described drawings of embodiments of the present disclosure, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the present disclosure described herein may be made. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.

In the embodiments of the present disclosure, the terms "upper", "lower", "inner", "middle", "outer", "front", "rear", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the disclosed embodiments and their embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation. Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meanings of these terms in the embodiments of the present disclosure can be understood by those of ordinary skill in the art as appropriate.

In addition, the terms "disposed," "connected," and "secured" are to be construed broadly. For example, "connected" may be a fixed connection, a detachable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. Specific meanings of the above terms in the embodiments of the present disclosure can be understood by those of ordinary skill in the art according to specific situations.

The term "plurality" means two or more unless otherwise specified.

In the embodiment of the present disclosure, the character "/" indicates that the preceding and following objects are in an or relationship. For example, A/B represents: a or B.

The term "and/or" is an associative relationship that describes objects, meaning that three relationships may exist. E.g., a and/or B, represents: a or B, or A and B.

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

A refrigerant circulation circuit of an air conditioner is generally composed of a compressor 600, an outdoor heat exchanger 610, a throttle device 630, an indoor heat exchanger 620, and a four-way valve for changing a flow direction of a refrigerant in the refrigerant circulation circuit. When the air conditioner operates in a cooling mode, a refrigerant discharged from the compressor 600 passes through the outdoor heat exchanger 610, the throttling device 630 and the indoor heat exchanger 620 in sequence through the four-way valve, and finally returns to the compressor 600 to be compressed again. When the air conditioner operates in a heating mode, a refrigerant discharged from the compressor 600 passes through the indoor heat exchanger 620, the throttling device 630 and the outdoor heat exchanger 610 in sequence through the four-way valve, and finally returns to the compressor 600 to be compressed again.

As shown in fig. 1 to 5, an embodiment of the present disclosure provides a heat exchanger, which includes a first main pipe 100, a second main pipe 110, a first heat exchange path 200, a second heat exchange path 210, a third heat exchange path 220, a fourth heat exchange path 230, a fifth heat exchange path 240, a sixth heat exchange path 250, a first bypass path 300, a second bypass path 310, a third bypass path 320, a fourth bypass path 330, a fifth bypass path 340, a sixth bypass path 350, a first check valve 400, a second check valve 410, a third check valve 420, a fourth check valve 430, a fifth check valve 440, and a sixth check valve 450. Wherein, the first main pipeline 100 is communicated with the first shunt element 500; second main conduit 110 communicates with second shunt element 510; the first end of the first heat exchange path 200 is communicated with the third flow dividing element 520, and the second end thereof is communicated with the fourth flow dividing element 530; and, the third dividing element 520 is in communication with the first dividing element 500; the first end of the second heat exchange path 210 is communicated with the fourth flow dividing element 530, and the second end thereof is communicated with the fifth flow dividing element 540; a first end of the third heat exchange passage 220 is communicated with the sixth flow dividing element 550, and a second end thereof is communicated with the second flow dividing element 510; a first end of the fourth heat exchange passage 230 is communicated with the seventh flow dividing element 560, and a second end thereof is communicated with the eighth flow dividing element 570; also, the seventh shunt element 560 communicates with the first shunt element 500; a first end of the fifth heat exchange passage 240 is communicated with the eighth flow dividing element 570, and a second end thereof is communicated with the ninth flow dividing element 580; the first end of the sixth heat exchange passage 250 is communicated with the tenth flow element 590, and the second end thereof is communicated with the second flow dividing element 510; the first end of the first bypass line 300 is connected to the fifth flow splitting element 540, and the second end thereof is connected to the sixth flow splitting element 550; the first end of the second bypass line 310 is connected to the fourth flow dividing element 530, and the second end thereof is connected to the sixth flow dividing element 550; the first end of the third bypass line 320 is connected to the third flow dividing element 520, and the second end thereof is connected to the fifth flow dividing element 540; a first end of the fourth bypass line 330 is communicated with the ninth flow dividing element 580, and a second end thereof is communicated with the tenth flow dividing element 590; a first end of the fifth bypass line 340 is connected to the eighth flow dividing element 570, and a second end thereof is connected to the tenth flow dividing element 590; a first end of the sixth bypass line 350 is communicated with the seventh diverting element 560, and a second end thereof is communicated with the ninth diverting element 580; the first check valve 400 is disposed in the first bypass line 300, and a direction of conduction of the first check valve 400 is defined to flow from the fifth flow dividing element 540 to the sixth flow dividing element 550; the second check valve 410 is disposed on the second bypass line 310, and the conducting direction of the second check valve 410 is limited to flow from the sixth shunting element 550 to the fourth shunting element 530; the third check valve 420 is disposed in the third bypass line 320, and a direction of conduction of the third check valve 420 is defined to flow from the fifth shunting element 540 to the third shunting element 520; the fourth check valve 430 is disposed on the fourth bypass line 330, and the conducting direction of the fourth check valve 430 is limited to flow from the ninth flow dividing element 580 to the tenth flow dividing element 590; the fifth check valve 440 is disposed in the fifth bypass line 340, and a direction of conduction of the fifth check valve 440 is defined to flow from the tenth flow element 590 to the eighth flow dividing element 570; the sixth check valve 450 is disposed in the sixth bypass line 350, and a direction of conduction of the sixth check valve 450 is defined to flow from the ninth flow dividing element 580 to the seventh flow dividing element 560.

With the heat exchanger provided in the embodiment of the present disclosure, when the refrigerant enters the first flow dividing element 500 from the first main pipeline 100, the refrigerant in the heat exchanger flows in the heating flow direction, as shown in fig. 3. First, the refrigerant in the first flow dividing element 500 is divided into two paths to flow to the third flow dividing element 520 and the seventh flow dividing element 560 respectively. Then, under the one-way conduction action of the third check valve 420, the refrigerant in the third flow dividing element 520 enters the fourth flow dividing element 530 through the first heat exchanging channel 200. Then, under the one-way conduction action of the second check valve 410, the refrigerant in the fourth flow dividing element 530 enters the fifth flow dividing element 540 through the second heat exchanging channel 210. Then, since the pressure in the fifth flow dividing element 540 is lower than that in the third flow dividing element 520 along with the flow of the refrigerant, the refrigerant in the fifth flow dividing element 540 can only enter the sixth flow dividing element 550 through the first bypass line 300. Then, the refrigerant in the sixth flow dividing element 550 enters the second flow dividing element 510 through the third heat exchanging channel 220. Meanwhile, under the unidirectional conduction action of the sixth check valve 450, the refrigerant in the seventh flow dividing element 560 enters the eighth flow dividing element 570 through the fourth heat exchanging channel 230. Next, under the unidirectional conduction action of the fifth check valve 440, the refrigerant in the eighth flow dividing element 570 enters the ninth flow dividing element 580 through the fifth heat exchanging channel 240. Then, since the pressure in the ninth flow dividing element 580 is lower than that in the seventh flow dividing element 560 as the refrigerant flows, the refrigerant in the ninth flow dividing element 580 can only enter the tenth flow dividing element 590 through the fourth bypass line 330. The refrigerant in the fourth flow dividing element 530 then enters the second flow dividing element 510 through the sixth heat exchange channel 250. Finally, the refrigerant in the second flow dividing element 510 flows out through the second main pipe 110.

When the refrigerant enters the second flow dividing element 510 from the second main pipeline 110, the refrigerant in the heat exchanger flows in a cooling flow direction, as shown in fig. 4. First, the refrigerant in the second flow dividing element 510 is divided into two paths to flow to the sixth flow dividing element 550 and the tenth flow dividing element 590, respectively. Then, under the action of the one-way conduction of the first check valve 400, the refrigerant in the sixth flow dividing element 550 can enter the fourth flow dividing element 530 only through the second bypass line 310. Then, the refrigerant in the fourth flow dividing element 530 is divided into two paths, one path flows to the third flow dividing element 520 through the first heat exchanging path 200, and the other path enters the fifth flow dividing element 540 through the second heat exchanging path 210. Then, since the pressure in the fifth flow dividing element 540 is lower than that in the sixth flow dividing element 550, the refrigerant in the fifth flow dividing element 540 can enter the third flow dividing element 520 only through the third bypass line 320. Then, the refrigerant in the third flow dividing element 520 flows to the first flow dividing element 500. Meanwhile, under the unidirectional conduction action of the fourth check valve 430, the refrigerant in the tenth flow element 590 may enter the eighth flow dividing element 570 only through the fifth bypass line 340. Then, the refrigerant in the eighth flow dividing element 570 is divided into two paths, one path flows to the seventh flow dividing element 560 through the fourth heat exchanging path 230, and the other path flows to the ninth flow dividing element 580 through the fifth heat exchanging path 240. Then, since the pressure in the ninth flow dividing element 580 is lower than that in the tenth flow dividing element 590, the refrigerant in the ninth flow dividing element 580 can only enter the seventh flow dividing element 560 through the sixth bypass line 350. Then, the refrigerant in the seventh flow dividing element 560 flows to the first flow dividing element 500. Finally, the refrigerant in the first flow dividing element 500 flows out through the first main pipe 100.

The heat exchanger flows downwards in the refrigeration process, the circulation path of the refrigerant comprises a first heat exchange path 200, a second heat exchange path 210, a third heat exchange path 220, a fourth heat exchange path 230, a fifth heat exchange path 240, a sixth heat exchange path 250, a second bypass pipeline 310, a third bypass pipeline 320, a fifth bypass pipeline 340 and a sixth bypass pipeline 350, the first heat exchange path 200 and the second heat exchange path 210 form a first parallel path, and the fourth heat exchange path 230 and the fifth heat exchange path 240 form a second parallel path. Therefore, the circulation path and the circulation time of the refrigerant in the heat exchanger are effectively prolonged, the pressure drop in the heat exchanger is reduced, and the performance of the heat exchanger is improved. The heat exchanger has a downward heating flow, and the flow paths of the refrigerant include a first heat exchange path 200, a second heat exchange path 210, a third heat exchange path 220, a fourth heat exchange path 230, a fifth heat exchange path 240, a sixth heat exchange path 250, a first bypass path 300, and a fourth bypass path 330. And the first heat exchange path 200, the second heat exchange path 210, the first bypass path 300 and the third heat exchange path 220 constitute a first series path. The fourth heat exchange passage 230, the fifth heat exchange passage 240, the fourth bypass pipe 330 and the sixth heat exchange passage 250 constitute a second series passage. Therefore, the circulation path of the refrigerant in the heat exchanger is effectively shortened, the rapid circulation of the refrigerant is facilitated, and the performance of the heat exchanger is improved.

In some embodiments, the first flow dividing element 500 to the tenth flow dividing element 590 are each a refrigerant distributor.

In some embodiments, the heat exchange tubes included in each of the first to sixth heat exchange passages 200 to 250 are all copper tubes. The copper pipe has excellent heat-conducting property, so that the refrigerant can better exchange heat with the external environment when circulating inside the heat exchange pipe.

In some embodiments, the heat exchange tubes included in each of the first to sixth heat exchange paths 200 to 250 are provided with heat exchange fins. Therefore, the heat exchange area of the heat exchange tube can be increased and the heat exchange efficiency of the refrigerant can be improved by arranging the heat exchange fins.

In some embodiments, third shunt element 520 is in communication with first shunt element 500 via first branch conduit 101, and seventh shunt element 560 is in communication with first shunt element 500 via second branch conduit 102; wherein the height of the first branch pipe 101 is greater than the height of the second branch pipe 102.

In some embodiments, the heat exchanger further includes a casing 640, and a tube sheet is disposed in the casing 640, and the heat exchange tubes included in the first heat exchange path 200 to the sixth heat exchange path 250 are all fixed in the casing 640 through the tube sheet.

Optionally, the first heat exchange passage 200, the second heat exchange passage 210, the third heat exchange passage 220, the fourth heat exchange passage 230, the fifth heat exchange passage 240 and the sixth heat exchange passage 250 are sequentially arranged from top to bottom.

Optionally, the height of the first shunt element 500 is greater than the height of the second shunt element 510.

Further, optionally, the first shunt element 500 is disposed on the left side of the chassis 640, and the second shunt element 510 is disposed on the right side of the chassis 640.

Alternatively, the first check valve 400, the third check valve 420, the fourth check valve 430, and the sixth check valve 450 are disposed at the left side of the cabinet 640, and the second check valve 410 and the fifth check valve 440 are disposed at the right side of the cabinet 640.

Further, optionally, the first check valve 400, the third check valve 420, the fourth check valve 430, and the sixth check valve 450 are sequentially disposed from top to bottom. The height of the second check valve 410 is greater than the height of the fifth check valve 440.

In some embodiments, the first heat exchange path 200 includes a plurality of heat exchange tubes, and the plurality of heat exchange tubes form a U-shaped refrigerant flow path with an upward opening or a downward opening.

Exemplarily, as shown in fig. 5, the first heat exchange path 200 is a U-shaped refrigerant flow path with an opening facing downward and is formed by 8 heat exchange tubes, wherein 4 heat exchange tubes on the left side of the first heat exchange path 200 are provided, and adjacent heat exchange tubes are communicated with each other through hairpin tubes; the number of the heat exchange tubes on the right side of the first heat exchange passage 200 is 4, and the adjacent heat exchange tubes are communicated through the hairpin tube. The first heat exchange tube at the upper left part of the first heat exchange passage 200 is communicated with the first heat exchange tube at the upper right part of the first heat exchange passage through a hairpin tube, the first heat exchange tube at the lower left part of the first heat exchange passage 200 is communicated with the third flow dividing element 520, and the first heat exchange tube at the lower right part of the first heat exchange passage 200 is communicated with the fourth flow dividing element 530, so that a U-shaped refrigerant flow path with a downward opening is formed. It should be noted that, the communication mode of the heat exchange tubes on the same side is taken as an example, the front end of the first heat exchange tube on the upper portion of the left side is communicated with the front end of the first heat exchange tube on the upper portion of the right side through the hairpin tube, the rear end of the first heat exchange tube on the upper portion of the left side is communicated with the rear end of the second heat exchange tube on the upper portion of the left side through the hairpin tube, the front end of the second heat exchange tube on the upper portion of the left side is communicated with the front end of the third heat exchange tube on the upper portion of the left side through the hairpin tube, and the heat exchange tubes on the same side form a serpentine structure by analogy in sequence. The heat exchange tubes described below are connected in a similar manner.

In some embodiments, the second heat exchange path 210 includes a plurality of heat exchange tubes, and the plurality of heat exchange tubes form a U-shaped refrigerant flow path with an upward opening or a downward opening.

Exemplarily, as shown in fig. 5, the second heat exchange path 210 is a U-shaped refrigerant flow path with an upward opening formed by 8 heat exchange tubes, wherein the number of the heat exchange tubes on the left side of the second heat exchange path 210 is 4, and the adjacent heat exchange tubes are communicated through hairpin tubes; the number of the heat exchange tubes on the right side of the second heat exchange path 210 is 4, and the adjacent heat exchange tubes are communicated through the hairpin tube. The first heat exchange tube at the lower part of the left side of the second heat exchange path 210 is communicated with the first heat exchange tube at the lower part of the right side of the second heat exchange path 210 through a hairpin tube, the first heat exchange tube at the upper part of the left side of the second heat exchange path 210 is communicated with the fifth flow dividing element 540, and the first heat exchange tube at the upper part of the right side of the second heat exchange path 210 is communicated with the fourth flow dividing element 530, so that a U-shaped refrigerant flow path with an upward opening is formed.

In some embodiments, the third heat exchange path 220 includes a plurality of heat exchange tubes, and the plurality of heat exchange tubes form an N-shaped refrigerant flow path.

Exemplarily, as shown in fig. 5, the third heat exchange path 220 is a U-shaped refrigerant flow path with an upward opening formed by 8 heat exchange tubes, wherein the number of the heat exchange tubes on the left side of the third heat exchange path 220 is 4, and the adjacent heat exchange tubes are communicated through hairpin tubes; the number of the heat exchange tubes on the right side of the third heat exchange passage 220 is 4, and the adjacent heat exchange tubes are communicated through the hairpin tube. The first heat exchange tube at the lower left part of the third heat exchange path 220 is communicated with the first heat exchange tube at the upper right part of the third heat exchange path 220 through a hairpin tube, the first heat exchange tube at the upper left part of the third heat exchange path 220 is communicated with the sixth flow dividing element 550, and the first heat exchange tube at the lower right part of the third heat exchange path 220 is communicated with the second flow dividing element 510, so that an N-shaped refrigerant flow path is formed.

In some embodiments, the fourth heat exchange path 230 includes a plurality of heat exchange tubes, and the plurality of heat exchange tubes form a U-shaped refrigerant flow path with an upward opening or a downward opening.

Exemplarily, as shown in fig. 5, the fourth heat exchange path 230 is a U-shaped refrigerant flow path with an downward opening formed by 8 heat exchange tubes, wherein 4 heat exchange tubes are arranged on the left side of the fourth heat exchange path 230, and adjacent heat exchange tubes are communicated through hairpin tubes; the number of the heat exchange tubes on the right side of the fourth heat exchange path 230 is 4, and the adjacent heat exchange tubes are communicated through the hairpin tube. The first heat exchange tube at the upper left part of the fourth heat exchange path 230 is communicated with the first heat exchange tube at the upper right part of the fourth heat exchange path 230 through a hairpin tube, the first heat exchange tube at the lower left part of the fourth heat exchange path 230 is communicated with the seventh flow dividing element 560, and the first heat exchange tube at the lower right part of the fourth heat exchange path 230 is communicated with the eighth flow dividing element 570, so that a U-shaped refrigerant flow path with a downward opening is formed.

In some embodiments, the fifth heat exchange path 240 includes a plurality of heat exchange tubes, and the plurality of heat exchange tubes form a U-shaped refrigerant flow path with an upward opening or a downward opening.

Exemplarily, as shown in fig. 5, the fifth heat exchange path 240 is a U-shaped refrigerant flow path with an upward opening formed by 8 heat exchange tubes, wherein the number of the heat exchange tubes on the left side of the fifth heat exchange path 240 is 4, and the adjacent heat exchange tubes are communicated through hairpin tubes; the number of the heat exchange tubes on the right side of the fifth heat exchange passage 240 is 4, and the adjacent heat exchange tubes are communicated through the hairpin tube. The first heat exchange tube at the lower left part of the fifth heat exchange path 240 is communicated with the first heat exchange tube at the lower right part of the fifth heat exchange path 240 through a hairpin tube, the first heat exchange tube at the upper left part of the fifth heat exchange path 240 is communicated with the ninth flow dividing element 580, and the first heat exchange tube at the upper right part of the fifth heat exchange path 240 is communicated with the eighth flow dividing element 570, so that a U-shaped refrigerant flow path with an upward opening is formed.

In some embodiments, the sixth heat exchange path 250 includes a plurality of heat exchange tubes, and the plurality of heat exchange tubes form an N-shaped refrigerant flow path.

Exemplarily, as shown in fig. 5, the sixth heat exchange path 250 is a U-shaped refrigerant flow path with an upward opening formed by 8 heat exchange tubes, wherein the number of the heat exchange tubes on the left side of the sixth heat exchange path 250 is 4, and the adjacent heat exchange tubes are communicated through hairpin tubes; the number of the heat exchange tubes on the right side of the sixth heat exchange path 250 is 4, and the adjacent heat exchange tubes are communicated through hairpin tubes. The first heat exchange tube at the lower left part of the sixth heat exchange path 250 is communicated with the first heat exchange tube at the upper right part of the sixth heat exchange path through a hairpin tube, the first heat exchange tube at the upper left part of the fifth heat exchange path 240 is communicated with the tenth flow element 590, and the first heat exchange tube at the lower right part of the fifth heat exchange path 240 is communicated with the second flow dividing element 510, so that an N-shaped refrigerant flow path is formed.

The embodiment of the present disclosure further provides an air conditioner, and the indoor heat exchanger 620 and/or the outdoor heat exchanger 610 are/is the heat exchanger described in any of the above embodiments.

Optionally, the outdoor heat exchanger 610 is the heat exchanger described in any of the above embodiments.

In the cooling mode of the air conditioner, the outdoor heat exchanger 610 serves as a condenser, the first main line 100 of the outdoor heat exchanger 610 is communicated with the exhaust port of the compressor 600 through the four-way valve, and the second main line 110 of the outdoor heat exchanger 610 is communicated with the indoor heat exchanger 620. The refrigerant discharged from the compressor 600 through the discharge port enters the first flow dividing element 500 from the first main line 100, and at this time, the refrigerant in the exterior heat exchanger 610 flows in the heating flow direction. Therefore, the circulation path of the refrigerant in the air conditioner is shortened, and the rapid circulation of the refrigerant is facilitated.

In the heating mode of the air conditioner, the outdoor heat exchanger 610 serves as an evaporator, and the indoor heat exchanger 620 is connected to an exhaust port of the compressor 600 through a four-way valve. At this time, the second main pipe 110 of the outdoor heat exchanger 610 communicates with the indoor heat exchanger 620, and the first main pipe 100 of the outdoor heat exchanger 610 communicates with the suction port of the compressor 600. The refrigerant discharged from the compressor 600 through the discharge port passes through the indoor heat exchanger 620 and enters the second main line 110 of the outdoor heat exchanger 610, and the refrigerant enters the fourth bypass 530 through the second main line 110, and at this time, the refrigerant in the outdoor heat exchanger 610 circulates in a cooling flow direction. Therefore, the circulation path and the circulation time of the refrigerant in the air conditioner are prolonged, the pressure drop in the air conditioner is reduced, and the performance in the air conditioner is improved.

The above description and drawings sufficiently illustrate embodiments of the disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others. The embodiments of the present disclosure are not limited to the structures that have been described above and shown in the drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A heat exchanger, comprising:

the first main pipeline is communicated with the first shunt element;

the second main pipeline is communicated with the second shunt element;

a first heat exchange passage, the first end of which is communicated with the third flow dividing element and the second end of which is communicated with the fourth flow dividing element; and the third dividing element is communicated with the first dividing element;

a second check valve disposed in the second bypass line, and a direction of conduction of the second check valve is defined to flow from the sixth shunting element to the fourth shunting element;

a fifth check valve disposed in the fifth bypass line, and a direction of conduction of the fifth check valve is defined as flowing from the tenth shunting element to the eighth shunting element;

2. The heat exchanger of claim 1, wherein the third flow dividing element is in communication with the first flow dividing element by a first branch line, and the seventh flow dividing element is in communication with the first flow dividing element by a second branch line;

3. The heat exchanger according to claim 1 or 2, wherein the height of the first flow dividing element is greater than the height of the second flow dividing element.

4. The heat exchanger according to claim 1 or 2, characterized in that the first main conduit has a greater height than the second main conduit.

5. The heat exchanger according to claim 1 or 2, wherein the first heat exchange passage, the second heat exchange passage, the third heat exchange passage, the fourth heat exchange passage, the fifth heat exchange passage, and the sixth heat exchange passage are arranged in this order from top to bottom.

6. The heat exchanger of claim 1 or 2, wherein the first heat exchange path comprises:

7. The heat exchanger of claim 1 or 2, wherein the second heat exchange path comprises:

8. The heat exchanger of claim 1 or 2, wherein the third heat exchange path comprises:

the heat exchange tubes form an N-shaped refrigerant circulation path.

9. An air conditioner comprising a refrigerant circulation circuit constructed by at least an indoor heat exchanger, an outdoor heat exchanger, a compressor and a four-way valve, wherein the indoor heat exchanger and/or the outdoor heat exchanger is the heat exchanger as recited in any one of claims 1 to 8.

10. The air conditioner according to claim 9, wherein the outdoor heat exchanger is the heat exchanger;

in a refrigerating mode, the first main pipeline of the outdoor heat exchanger is communicated with the exhaust port of the compressor, and the second main pipeline of the outdoor heat exchanger is communicated with the indoor heat exchanger;