CN114165946B - Heat exchanger and air conditioner - Google Patents

Abstract

The application relates to the technical field of air conditioners, and discloses a heat exchanger, which comprises: a gas collecting tube; the device comprises a first heat exchange passage, a second heat exchange passage, a third heat exchange branch, a fourth heat exchange branch and a shunt pipeline, wherein the shunt pipeline is connected with a second shunt element and a third shunt element in parallel at a first end, and a third pipe orifice of a gas collecting pipe and the first shunt element are connected with the second end in parallel; the one-way valve is arranged on the shunt pipeline; the direction of conduction of the one-way valve is defined from the first end of the shunt line to the second end of the shunt line. The heat exchanger provided by the application can simultaneously ensure the optimal performance requirements of the heat exchanger under different working modes. The application also discloses an air conditioner.

Description

Heat exchanger and air conditioner

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

Technical Field

The present application relates to the field of air conditioning technology, for example, to a heat exchanger and an air conditioner.

Background

At present, the existing heat exchanger usually adopts a shunt pipe or a shunt to shunt, but the current heat exchanger passes through the same pipeline when refrigerating and heating, and meets the refrigerating operation requirement through a supercooling pipeline when the heat exchanger is used for refrigerating; when the heat exchanger heats, the pressure loss of the system is increased and the heat exchange efficiency of the system is reduced due to the fact that the heat exchanger passes through the supercooling pipeline.

In order to reduce the pressure loss of the system and improve the heat exchange efficiency of the system, a heat exchanger is disclosed in the prior art and comprises a gas collecting tube; the first heat exchange passage comprises one or more first heat exchange branches, the first ends of the first heat exchange branches are connected with the first pipe orifice of the gas collecting pipe, and the second ends of the first heat exchange branches are connected with the first flow dividing element; the first end of the second heat exchange branch is connected with a second pipe orifice of the gas collecting pipe, and the second end of the second heat exchange branch is connected with the first flow dividing element; the first end of the third heat exchange branch is connected with a third pipe orifice of the gas collecting pipe, and the second end of the third heat exchange branch is connected with the second flow dividing element; the first end of the fourth heat exchange branch is connected with a fourth pipe port of the gas collecting pipe, and the second end of the fourth heat exchange branch is connected with the first flow dividing element; a fifth heat exchange branch, the first end of which is connected with a fifth pipe orifice of the gas collecting pipe, and the second end of which is connected with the second flow dividing element; a shunt bypass line connecting the first shunt element and the second shunt element; the first one-way valve is arranged on the shunt bypass pipeline, and the conducting direction is limited to flow from the second shunt element to the first shunt element; the second one-way valve is arranged between the first pipe orifice and the second pipe orifice of the gas collecting pipe, and the conducting direction is limited to flow from the second pipe orifice to the first pipe orifice; the third one-way valve is arranged between the third pipe orifice and the fourth pipe orifice of the gas collecting pipe, and the conducting direction is limited to flow from the fourth pipe orifice to the third pipe orifice.

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:

the conventional heat exchanger is designed to cool or heat different channels, but when the heat exchanger is used as an evaporator or a condenser, the heat transfer performance of the heat exchanger is different in influencing factors, so that the heat exchanger of the channels cannot simultaneously exert the optimal performance of heating and cooling.

Disclosure of Invention

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, and is intended to neither identify key/critical elements nor delineate the scope of such embodiments, but is intended as a prelude to the more detailed description that follows.

The embodiment of the disclosure provides a heat exchanger and an air conditioner, which can enable the heat exchanger to be in respective optimal branch flow paths under the working condition of heating or refrigerating, thereby improving the heating and refrigerating efficiency at the same time.

In some embodiments, a heat exchanger includes: a gas collecting tube; the first heat exchange passage comprises one or more first heat exchange branches, wherein the first end of the first heat exchange branch is connected with a first pipe orifice of the gas collecting pipe, and the second end of the first heat exchange branch is connected with the first flow dividing element; the second heat exchange passage comprises one or more second heat exchange branches, wherein the first ends of the second heat exchange branches are connected with the second pipe orifice of the gas collecting pipe, and the second ends of the second heat exchange branches are connected with the first flow dividing element; the first end of the third heat exchange branch is connected with the second flow dividing element, and the second end of the third heat exchange branch is connected with the first flow dividing element; the first end of the fourth heat exchange branch is connected with the second flow dividing element, and the second end of the fourth heat exchange branch is connected with the third flow dividing element; the first end of the shunt pipeline is connected with a second shunt element and a third shunt element in parallel, and the second end of the shunt pipeline is connected with a third pipe orifice of the gas collecting pipe and the first shunt element in parallel; the one-way valve is arranged on the shunt pipeline; the direction of conduction of the one-way valve is defined from the first end of the shunt line to the second end of the shunt line.

In some embodiments, the air conditioner includes: the heat exchanger comprises a refrigerant circulation loop at least consisting of an indoor heat exchanger, an outdoor heat exchanger, a compressor and a throttling device, wherein the indoor heat exchanger and/or the outdoor heat exchanger are/is the heat exchanger.

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

the heat exchanger and the air conditioner provided by the embodiment of the disclosure are provided with the one-way valve on the split pipeline through the first heat exchange passage, the second heat exchange passage, the third heat exchange branch and the fourth heat exchange branch, and the heat transfer performance of the heat exchanger is affected by different factors. During refrigeration, a small number of branches are selected to accelerate circulation and increase heat transfer coefficient, so that high-temperature refrigeration capacity is improved. During heating, a large number of branches are selected, so that the pressure drop is greatly reduced while the heat transfer coefficient is ensured, the system pressure is improved, and the low-temperature heating quantity is improved. Therefore, under the condition of heating or refrigerating, the heat exchangers can be positioned in the respective optimal branch numbers, and the heating and refrigerating efficiency can be synchronously 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 and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which like reference numerals refer to similar elements, and in which:

fig. 1 is a schematic structural view of a heat exchanger according to an embodiment of the present disclosure;

fig. 2 is a schematic structural diagram of a second heat exchanger according to an embodiment of the present disclosure;

FIG. 3 is a schematic illustration of a check valve cut-off structure provided by an embodiment of the present disclosure;

fig. 4 is a schematic diagram of a one-way valve according to an embodiment of the present disclosure;

FIG. 5 is a schematic illustration of the structure of another check valve shut-off provided by an embodiment of the present disclosure;

FIG. 6 is a schematic illustration of another one-way valve according to an embodiment of the present disclosure;

FIG. 7 is a schematic illustration of a flow splitting assembly provided by an embodiment of the present disclosure;

FIG. 8 is a second schematic structural view of a diverter assembly provided in an embodiment of the present disclosure;

FIG. 9 is a schematic diagram III of a flow splitting assembly provided by an embodiment of the present disclosure;

fig. 10 is a system schematic diagram of an air conditioner provided in an embodiment of the present disclosure.

Reference numerals:

100: a gas collecting tube; 101: a first nozzle; 102: a second nozzle; 103: a third nozzle; 104: a first port; 105: a second port;

200: a first heat exchange branch;

300: a second heat exchange branch;

400: a third heat exchange branch;

500: a fourth heat exchange branch;

600: a shunt pipeline; 601: a first shunt branch; 602: a second shunt branch; 603: a third shunt branch; 604: a fourth shunt branch;

701: a first shunt element; 702: a second shunt element; 703: a third shunt element;

10: a one-way valve; 11: a first communication port; 12: a second communication port; 13: a third communication port; 14: a fourth communication port; 15: a flange;

20: a valve seat; 21: a valve port;

30: a limiting piece;

40: a shunt assembly; 41: a valve core; 42: a mixing member; 43: a shaft lever; 44: a guide piece; 45: a magnetic member; 46: a sealing gasket;

50: an indoor heat exchanger; 60: an outdoor heat exchanger; 70: a compressor; 80: a throttle device.

Detailed Description

So that the manner in which the features and techniques of the disclosed embodiments can be understood in more detail, a more particular description of the embodiments of the disclosure, briefly summarized below, may be had by reference to the appended drawings, which are not intended to be limiting of the embodiments of the disclosure. 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 still be practiced without these details. In other instances, well-known structures and devices may be shown simplified in order to simplify the drawing.

The terms first, second and the like in the description and in the claims of the embodiments of the disclosure and in the above-described figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe embodiments of the present disclosure. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.

In the embodiments of the present disclosure, the terms "upper", "lower", "inner", "middle", "outer", "front", "rear", and the like indicate an azimuth or a positional relationship based on that shown in the drawings. These terms are used primarily to better describe embodiments of the present disclosure and embodiments thereof and are not intended to limit the indicated device, element, or component to a particular orientation or to be constructed and operated in a particular orientation. Also, some of the terms described above may be used to indicate other meanings in addition to orientation or positional relationships, for example, the term "upper" may also be used to indicate some sort of attachment or connection in some cases. The specific meaning of these terms in the embodiments of the present disclosure will be understood by those of ordinary skill in the art in view of the specific circumstances.

In addition, the terms "disposed," "connected," "secured" and "affixed" are to be construed broadly. For example, "connected" may be in a fixed connection, a removable connection, or a unitary construction; may 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. The specific meaning of the above terms in the embodiments of the present disclosure may be understood by those of ordinary skill in the art according to specific circumstances.

The term "plurality" means two or more, unless otherwise indicated.

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

The term "and/or" is an associative relationship that describes an object, meaning that there may be three relationships. For example, a and/or B, represent: a or B, or, A and B.

It should be noted that, without conflict, the embodiments of the present disclosure and features of the embodiments may be combined with each other.

The air conditioner comprises an indoor unit and an outdoor unit, wherein the indoor unit is provided with an indoor heat exchanger, an indoor fan and the like, and can be used for realizing the functions of heat exchange and the like by matching with a refrigerant and an indoor environment; the outdoor unit is provided with an outdoor heat exchanger, an outdoor fan, a throttle valve, a compressor, a gas-liquid separator and the like, and can be used for realizing the functions of heat exchange, refrigerant compression, refrigerant throttling and the like by matching with a refrigerant and an outdoor environment.

Here, the indoor heat exchanger, the outdoor heat exchanger, the throttle valve, the compressor, the gas-liquid separator and other parts are connected through refrigerant pipelines to jointly form a refrigerant circulating system for circulating and conveying the refrigerant between the indoor machine and the outdoor machine; optionally, the refrigerant circulation system is at least limited with two refrigerant flows respectively used for a heating mode or a refrigerating mode, specifically, when the air conditioner operates in the refrigerating mode, the refrigerant circulation system conveys the refrigerant in a first refrigerant flow direction, after being discharged from the compressor, the refrigerant sequentially flows through the outdoor heat exchanger, the throttle valve and the indoor heat exchanger, and then flows back to the compressor through the gas-liquid separator; when the air conditioner operates in a heating mode, the refrigerant circulation system conveys the refrigerant in a second refrigerant flow direction, and after the refrigerant is discharged from the compressor, the refrigerant sequentially flows through the indoor heat exchanger, the throttle valve and the outdoor heat exchanger and then flows back to the compressor through the gas-liquid separator.

In the heat exchanger and the air conditioner according to the embodiments of the present disclosure, by setting the split flow pipe and the check valve, the heat exchanger can respectively perform refrigerant transportation in different flow paths in different air conditioning modes, so that the heat exchanger can simultaneously perform optimal performance of refrigeration and heating. The embodiments provided herein are mostly embodiments when the heat exchanger is an outdoor heat exchanger.

Referring to fig. 10, an embodiment of the present disclosure provides an air conditioner including a refrigerant circulation circuit composed of at least an indoor heat exchanger 50, an outdoor heat exchanger 60, a compressor 70, and a throttle device 80, wherein the indoor heat exchanger 50 and/or the outdoor heat exchanger 60 are heat exchangers composed as follows. The heat exchanger includes: the gas-collecting tube 100, the first heat exchange passage, the second heat exchange passage, the third heat exchange branch 400, the fourth heat exchange branch 500 and the shunt pipeline 600.

When the heating operation is performed, the refrigerant in the tube is in a low-temperature low-pressure area, the heat transfer performance is mainly constrained by the heat transfer coefficient and the pressure drop, so that the refrigerant respectively enters the fourth heat exchange branch 500, one or more first heat exchange branches 200 in the first heat exchange passage of the heat exchanger, one or more second heat exchange branches 300 in the second heat exchange passage and the third heat exchange branch 400 in the heating flow downwards, and the refrigerant respectively enters all different branches, thereby greatly reducing the pressure drop and improving the system pressure while ensuring the heat transfer coefficient, and further improving the low-temperature heating quantity.

When in refrigeration operation, the refrigerant in the tube is in a high-temperature and high-pressure area, the heat transfer performance is mainly affected by the heat transfer coefficient, the pressure drop does not affect the heat transfer performance of refrigeration, and the device is suitable for relatively fewer branches. Therefore, the refrigerant flows downwards, the refrigerant respectively enters one or more first heat exchange branches 200 in the first heat exchange passage and one or more second heat exchange branches 300 in the second heat exchange passage of the heat exchanger, flows through the third heat exchange branch 400 and the fourth heat exchange branch 500 after being converged by the first flow dividing element 701, respectively enters part of the heat exchange branches to be converged, flows through the rest heat exchange branches, and can accelerate circulation to increase the heat transfer coefficient, thereby increasing the high-temperature refrigerating capacity. Therefore, the heat exchanger can meet the requirements of multiple branches of the evaporator and fewer branches of the condenser.

By adopting the heat exchanger and the air conditioner provided by the embodiment of the disclosure, the heat transfer performance of the heat exchanger is affected by different factors through the first heat exchange passage, the second heat exchange passage, the third heat exchange branch and the fourth heat exchange branch, and the one-way valve is arranged on the split-flow pipeline. During refrigeration, a small number of branches are selected to accelerate circulation and increase heat transfer coefficient, so that high-temperature refrigeration capacity is improved. During heating, a large number of branches are selected, so that the pressure drop is greatly reduced while the heat transfer coefficient is ensured, the system pressure is improved, and the low-temperature heating quantity is improved. Therefore, under the condition of heating or refrigerating, the heat exchangers can be positioned in the respective optimal branch numbers, and the heating and refrigerating efficiency can be synchronously improved.

As shown in connection with fig. 1 to 2, in the present embodiment, the first heat exchange path includes one or more first heat exchange branches 200, wherein a first end of the first heat exchange branch 200 is connected to the first pipe orifice 101 of the header 100, and a second end of the first heat exchange branch 200 is connected to the first diverting element 701; the second heat exchange path comprises one or more second heat exchange branches 300, wherein a first end of each second heat exchange branch 300 is connected with a second pipe orifice 102 of the gas collecting pipe, and a second end of each second heat exchange branch 300 is connected with a first flow dividing element 701; the first end of the third heat exchange branch 400 is connected to the second shunt element 702, and the second end of the third heat exchange branch 400 is connected to the first shunt element 701; the first end of the fourth heat exchange branch 500 is connected to the second shunt element 702, and the second end of the fourth heat exchange branch 500 is connected to the third shunt element 703; the first end of the shunt pipeline 600 is connected with a second shunt element 702 and a third shunt element 703 in parallel, and the second end of the shunt pipeline is connected with the third pipe orifice 103 of the gas collecting pipe 100 and the first shunt element 701 in parallel; a check valve 10 provided in the shunt line 600; the direction of conduction of the check valve 10 is defined as flowing from a first end of the shunt line 600 to a second end of the shunt line 600.

The refrigerant with low temperature and low pressure enters the first diversion element 701 from the second main port 105, and after being diverted, enters the fourth heat exchange branch 500 and the first end of the diversion pipeline 600 respectively, and the refrigerant entering the diversion pipeline 600 passes through the one-way valve 10, and the fourth heat exchange branch 500 enters the heat exchanger body for heat exchange. At this time, the conduction direction of the check valve 10 is from the first end of the split flow pipe 600 to the second end of the split flow pipe 600, and the refrigerant passing through the check valve 10 enters the first split flow element 701, and after being split, enters the first heat exchange passage, the second heat exchange passage and the third heat exchange branch 400, and enters the heat exchange body to exchange heat respectively. After the heat exchange of the fourth heat exchange branch 500 and the third heat exchange branch 400 is finished, the heat is converged and enters the second flow dividing element 702, and then enters the gas collecting tube 100 through the one-way valve 10; after the heat exchange of the first heat exchange passage, the second heat exchange passage and the third heat exchange branch 400 is finished, the heat exchange enters the gas collecting tube 100; the refrigerant passing through the header 100 is mixed and flows out from the first port 104. Therefore, in the heat exchanger provided by the embodiment of the disclosure, the flow of the heating fluid is downward, and due to the arrangement of the diversion pipeline 600 and the check valve 10, the number of downward heat exchange branches of the heating fluid is increased, the pressure drop is greatly reduced, the pressure of the system is increased, the refrigerant can fully exchange heat with the surrounding environment, and the heating efficiency of the air conditioner is improved.

The refrigerant flow is downward, the refrigerant with high temperature and high pressure enters the gas collecting tube 100 from the first main port 104, and after being split, the refrigerant enters the first heat exchange passage and the second heat exchange passage respectively, and after entering the heat exchange body for heat exchange respectively, the refrigerant is converged and enters the first split element 701. At this time, the one-way valve 10 flows from the first end of the split flow pipe 600 to the second end of the split flow pipe 600, flows into the third heat exchange branch 400 after converging, enters the heat exchange body for exchanging heat, enters the second split flow element 702, enters the fourth heat exchange branch 500, enters the first split flow element 701, and flows out from the second main port 105. Therefore, in the heat exchanger provided by the embodiment of the disclosure, the number of heat exchange branches in the refrigerating flow direction is reduced due to the arrangement of the split flow pipeline 600 and the one-way valve 10, the refrigerant circulation is accelerated, the heat transfer coefficient is increased, the refrigerant can fully exchange heat with the surrounding environment, and the refrigerating efficiency of the air conditioner is improved.

Optionally, the first flow splitting element 701 comprises one or more flow splitters, similarly, the second flow splitting element 702 comprises one or more flow splitters, and the third flow splitting element 703 comprises one or more flow splitters. Wherein the diverter is a diverter element having one or more inflow inlets and one or more outflow outlets, optionally the diverter is cylindrical and internally is a hollow structure brass diverter.

In some embodiments, the first port of the check valve 10 has a first communication port 11 and a second communication port 12, and the second port of the check valve 10 has a third communication port 13 and a fourth communication port 14. The refrigerant flowing in through the first communication port 11 and the second communication port 12 can flow out through the third communication port 13 and the fourth communication port 14.

In the present embodiment, when the refrigerant flows into the first communication port 11 and the second communication port 12, the refrigerant is allowed to flow into the third communication port 13 and the fourth communication port 14 from the valve port 21 of the valve seat 20.

In some embodiments, the shunt circuit 600 includes: a first branching circuit 601, a first end of which is connected to the first communication port 11 and a second end of which is connected to the second branching element 702; a second shunt branch 602, the first end of which is connected to the second communication port 12, and the second end of which is connected to the third shunt element 703; a third branch 603, the first end of which is connected to the third communication port 13, and the second end of which is connected to the third pipe orifice 103 of the header 100; the fourth shunt branch 604 has a first end connected to the fourth communication port 14 and a second end connected to the first shunt element 701.

In the present embodiment, the shunt circuit 600 includes a first shunt branch 601, a second shunt branch 602, a third shunt branch 603, and a fourth shunt branch 604; the check valve 10 includes a first communication port 11, a second communication port 12, a third communication port 13, and a fourth communication port 14. The refrigerant flows downwards from the second diversion branch 602, enters the check valve 10 through the second communication port 12, and enters the third diversion element 703 from the fourth communication port 14 for diversion; the refrigerant passing through the third heat exchange branch 400 and the fourth heat exchange branch 500 enters the check valve 10 through the first communication port 11, and enters the gas collecting tube 100 from the third communication port 13. The check valve 10 prevents the refrigerant from flowing from the fourth bypass 604 to the second bypass element 702 and the third bypass element 703 downward in the flow of refrigerant.

In some embodiments, the check valve 10 includes a valve seat 20 and a stop 30, and further includes: a flow diversion assembly 40 disposed on the valve seat 20; when the passage of the check valve 10 is conducted, the flow dividing assembly 40 can uniformly divide the refrigerant. By arranging the check valve 10 with four communication ports, one check valve can replace two check valves, so that the installation space is saved; the flow dividing assembly 40 is arranged in the check valve 10, and when the heat exchanger is used, the refrigerant flowing through the check valve is in a gas-liquid two-phase state, and the flow dividing assembly 40 can uniformly and stably divide the refrigerant to different communication ports so as to ensure the consistency of the flow of different flow dividing structures.

In the present embodiment, the check valve 10 includes a valve body having a tubular shape, a cylindrical wall cavity is formed in the valve body, a valve seat 20 is provided in the valve body cavity, and the valve seat 20 has a valve port 21 for inflow of refrigerant. The stopper 30 is disposed in the valve seat 20. Thus, the valve seat 20 and the stopper 30 form a stopper space.

In this embodiment, the valve core 41 is further disposed in the limiting space, the valve core 41 has a first end and a second end, the first end is a plug with a conical structure, and the second end is a sliding portion. A valve port 21 is arranged on the valve seat 20, and a plug of a conical structure faces the valve port 21; the sliding portion is slidably connected to the inner wall of the valve seat 20, and the valve element 41 can be moved. When the refrigerant positively flows in from one side of the valve seat 20, the refrigerant pushes the plug of the valve core 41, so that the refrigerant can flow in from the valve port 21 of the valve seat 20, and then a passage of the one-way valve is opened; when the refrigerant flows in from one side of the limiting piece 30, the refrigerant pushes the valve core 41, so that the plug of the valve core 41 can be inserted into the valve port 21 of the valve seat 20, and then the passage of the one-way valve is closed.

As shown in connection with fig. 3 and 4, in some embodiments, the flow diversion assembly 40 includes: the mixing member 42 is disposed outside the valve seat 20. The refrigerant can be uniformly and stably distributed to all the communication ports.

In this embodiment, the flow dividing assembly 40 includes a flow mixing member 42, and the flow mixing member 42 can mix the refrigerants flowing in different branches together to perform distribution and outflow.

In this embodiment, the valve seat 20 and the limiting member 30 are disposed in the check valve 10, and the mixing member 42 may include a filter screen, where the mixing member 42 is disposed outside the valve seat 20 and has a certain distance from the limiting member 30 on the valve seat 20, that is, a mixing space is formed. When a plurality of branches flow in from one side of the valve seat 20, the valve core 41 is pushed away by the driving force of the refrigerant in the direction of the refrigerant, so that the refrigerant can flow in from the valve port 21 of the valve seat 20, and after passing through the valve seat 20 and the limiting member 30, the refrigerant also passes through the mixing member 42, the flowing-in refrigerant is mixed by the mixing member 42, and when the refrigerant in the mixing member 42 reaches a certain volume, the refrigerant flows out from the mixing member 42, so that the refrigerant is split.

In some embodiments, the flow diversion assembly 40 includes a mesh enclosure of semi-circular configuration that snaps over the outside of the valve seat 20. I.e. outside the valve seat 20. The mesh enclosure of semi-circular structure forms the mixing space with locating part 30 for in the refrigerant that passes through is imported mixing space, through its effect of mixed flow, makes the refrigerant have homogeneity and stability, ensures the uniformity of different intercommunication mouth flow.

As shown in connection with fig. 5-9, in some embodiments, the flow diversion assembly 40 includes: a shaft 43 disposed in the valve seat 20; the guide pieces 44 are provided with two guide pieces and are movably connected through the shaft lever 43; the two guide sheets 44 are in a first posture, and the two guide sheets 44 are in a flat plate structure and can close the valve port 21 of the valve seat 20; the two guide pieces 44 are in the second posture, the two guide pieces 44 are arranged at a set angle, the valve port 21 of the valve seat 20 can be opened, and the inflowing refrigerant can be uniformly split. If the valve port 21 is small, the height of the entire valve seat 20 can be reduced.

In this embodiment, the diverter assembly 40 may also include a structure comprising a shaft 43 and two guide blades 44. With this structure, the functions of the existing valve element 41 and the mixed flow member 42 can be replaced. And the split streams are relatively independent.

In this embodiment, the valve seat 20, the limiting member 30 and the flow dividing assembly 40 are disposed in the check valve 10, the flow dividing assembly 40 is disposed in a limiting space formed by the valve seat 20 and the limiting member 30, at this time, the flow dividing assembly 40 includes a shaft 43 fixedly mounted in the valve seat 20, and the shaft 43 is located in the middle of the valve seat 20. Alternatively, the flow rates of the different flow paths may be different according to different usage requirements, and the shaft 43 may be disposed at a position offset from the middle of the valve seat 20. However, the two guide tabs 44 also need to be sized and shaped differently according to the use requirements described above.

In this embodiment, the flow dividing assembly 40 includes a shaft 43 and two guide pieces 44, the shaft 43 and the two guide pieces 44 are disposed in the valve seat 20 and have a certain distance from the limiting member 30 on the valve seat 20, and the check valve 10 is connected with a plurality of pipelines. When a plurality of pipes flow in from one side of the valve seat 20, the two guide pieces 44 are pushed away by the driving force of the refrigerant in the direction so that the refrigerant can flow in from the valve port 21 of the valve seat 20, and at this time, the two guide pieces 44 divide the valve seat 20 into two passages. Respectively enter different communication ports. Thereby realizing the confluence of a plurality of pipelines at the first end of the check valve 10 and the outflow of a plurality of pipelines at the second end of the check valve 10.

In this embodiment, the longest length of the two guide pieces 44 is L1, and the distance between the limiting member 30 and the shaft 43 is L2, where L2 is greater than L1, so that when the two guide pieces 44 are pushed apart by the driving force in the direction of the cooling medium, the guide pieces 44 will not contact the limiting member 30, and damage to the limiting member 30 can be effectively prevented. Meanwhile, the limiting piece 30 is arranged, so that the guide piece 44 can be prevented from being separated from a limiting space formed by the valve seat 20 and the limiting piece 30.

Wherein, the two guide pieces 44 are hinged by the shaft lever 43, when the two guide pieces 44 are in the first gesture, the two guide pieces 44 are in a flat plate structure, and can close the valve port 21 of the valve seat 20; when the two guide pieces 44 are in the second posture, the two guide pieces 44 are arranged at a set angle, and the valve port 21 of the valve seat 20 can be opened. When the electric power switch is turned on, the communication ports at the two ends are mutually independent. When the passage of the check valve is closed, the refrigerant reversely flows, and the two guide sheets 44 are driven by gravity or the direction of the refrigerant to close the valve port 21 of the valve seat 20, so that the effect of reversely closing the passage is realized.

As shown in connection with fig. 7 and 8, in some embodiments, the flow diversion assembly 40 includes: the magnetic member 45 is provided on the guide piece 44 and can be attracted to the side of the valve port 21. When the passage of the check valve is closed, the tightness of the valve port 21 can be effectively increased.

In this embodiment, the magnetic member 45 includes a magnetic block disposed on the guide piece 44. The guide piece 44 can be tightly connected with the side edge of the valve port 21 so as to control the flow of the refrigerant. The magnetic member 45 may be provided on the surface of the guide piece 44 or may be provided inside the guide piece 44. Optionally, the magnetic block is in a regular shape, including a polygonal structure such as a circle or a square.

In the example of a magnetic block in which the magnetic member 45 is a circular shape, the guide piece 44 is provided on the surface of the guide piece 44, and the guide piece 44 can be attracted to the valve port 21. The magnetic member 45 prevents the guide piece 44 from being opened when the refrigerant does not pass through the valve port 21. Ensuring the tightness of the guide 44 with the valve port 21.

In this embodiment, the magnetic member 45 may also be an annular magnetic strip that matches the side of the valve port 21. The magnetic member 45 may be provided on the surface of the guide piece 44 or inside the guide piece 44.

In the example where the magnetic member 45 is disposed on the surface of the guide piece 44, the annular magnetic stripe is disposed on the surface of the guide piece 44, and the guide piece 44 can be attracted to the valve port 21. The magnetic member 45 prevents the guide piece 44 from being opened when the refrigerant does not pass through the valve port 21. Ensuring the tightness of the guide 44 with the valve port 21.

In some embodiments, the flow diversion assembly 40 further includes: and a gasket 46 provided on the guide piece 44 and shaped to fit the valve port 21. The magnetic member 45 may prevent the guide tab 44 from being opened from the valve port 21, however, there may be a gap between the guide tab 44 and the valve port 21. Therefore, the gasket 46 is provided to fill the gap between the guide piece 44 and the valve port 21, thereby further ensuring the sealing property.

In this embodiment, the sealing pad 46 may increase the sealing performance, and the sealing pad 46 may be a gasket structure or a rubber pad structure. The sealability can be ensured.

In this embodiment, the shunt assembly 40 includes a shaft 43, two guide tabs 44, a magnetic member 45, and a gasket 46. The shaft 43 is installed in the valve seat 20, the two guide pieces 44 are hinged with the shaft 43, the two guide pieces 44 are in a semicircular structure, the two guide pieces 44 are in a first posture, the two guide pieces 44 are in a flat plate structure and in a whole circular structure, and the diameter of the formed circular shape is larger than that of the valve port 21. Inside the two guide sheets 44 are provided with sealing gaskets 46, the two sealing gaskets 46 are also in semicircular structures, the diameters of the two sealing gaskets 46 are matched with the diameters of the valve ports 21, and the two sealing gaskets can be just matched with the valve ports 21.

The magnetic member 45 is disposed on the outer side of the two gaskets 46, so that the connection between the gaskets 46 and the inner side wall of the valve port 21 can be ensured, and the magnetic member 45 is connected with the edge side wall of the valve port 21. Thus, the two guide tabs 44 are in the first posture, forming a cover structure, which is buckled on the valve port 21, so as to further ensure the tightness.

In some embodiments, the one-way valve further comprises: a flange 15 disposed within the valve seat 20; when the two guide pieces 44 are in the second posture, the two guide pieces 44 can be abutted against the flange 15.

In this embodiment, the inner portion of the valve body also has a flange 15 that can be used to define the range of motion of the guide vane 44. After the two guide pieces 44 are pushed apart by the driving force in the direction of the cooling medium, if the flanges 15 are not provided, the two guide pieces 44 may collide with each other, so that the stability and uniformity of the split flow are affected.

For example, the refrigerant is flushed through the valve port 21 at a certain flow rate, and the two guide vanes 44 are flushed away. Because the two guide pieces 44 are connected together through the shaft rod 43, after the two guide pieces 44 are opened by a certain angle, the two guide pieces 44 can mutually block to form a block, so that the stability and uniformity of the split flow are affected. The flange 15 is provided on the valve seat 20, which can limit the opening angle of the two guide pieces 44 to a certain extent, and prevent the two guide pieces 44 from blocking each other to form a block.

In the present embodiment, the flange 15 may have a columnar structure or a plate-like structure, and the flange 15 is located on one side of the limiting member 30, so that the flange can effectively abut against the two guide pieces 44.

In some embodiments, the flange 15 extends outwardly through the stop 30, separating the third communication port 13 from the fourth communication port 14. The third communication port 13 and the fourth communication port 14 can be formed as independent communication ports.

In this embodiment, the opening angle of the two guide pieces 44 may be limited to a certain extent, and the rib 15 may extend outward through the stopper 30 and may be connected to the inner sides of the third communication port 13 and the fourth communication port 14, so that when the two guide pieces 44 come into contact with the rib 15, the refrigerant of the two guide pieces 44 may directly flow into the limited third communication port 13 and fourth communication port 14.

In some embodiments, the heat exchanger further comprises a converging line connected to the third flow dividing element 703, which communicates with the compressor 70 and with the outdoor heat exchanger 60 when the indoor heat exchanger 50 is a heat exchanger.

In the cooling mode, when the heat exchanger is used as the indoor heat exchanger 50, the first main port 104 is a port through which the refrigerant flows out, and the second main port 105 is a port through which the refrigerant flows in; in the heating mode, when the heat exchanger is used as the indoor heat exchanger 50, the first port 104 is a port through which the refrigerant flows in, and the second port 105 is a port through which the refrigerant flows out.

In this embodiment, the heat exchanger header 100 communicates with the compressor 70 and the header communicates with the outdoor heat exchanger 60. Thus, the high temperature refrigerant discharged from the compressor 70 is introduced into the heat exchanger through the first inlet 104 of the header 100 in a downward flow direction, flows through the first heat exchange path, the second heat exchange path, the third heat exchange branch and the fourth heat exchange branch in this order according to the flow path, then flows out of the heat exchanger, and flows into the outdoor heat exchanger 60 after being throttled. Thus, the circulation is accelerated by a small number of branches, and the heat transfer coefficient is increased, so that the heat of the high-temperature refrigerant can be transferred to the indoor environment in a large quantity to improve the heating performance

In some embodiments, the heat exchanger further comprises a converging line connected to the third flow dividing element 703, the gas header 100 of which communicates with the compressor 70 and the indoor heat exchanger 50 when the outdoor heat exchanger 60 is a heat exchanger.

In the cooling mode, when the heat exchanger is used as the outdoor heat exchanger 60, the first port 104 is a port through which the refrigerant flows in, and the second port 105 is a port through which the refrigerant flows out; in the heating mode, when the heat exchanger is used as the outdoor heat exchanger 60, the first port 104 is a port through which the refrigerant flows out, and the second port 105 is a port through which the refrigerant flows in.

In this embodiment, the header 100 of the heat exchanger is in communication with the compressor 70 and the header is in communication with the indoor heat exchanger 50. Thus, the refrigerant flow is downward, the high temperature refrigerant discharged from the compressor 70 enters the heat exchanger from the first header 104 of the header 100, flows through the first heat exchange path, the second heat exchange path, the third heat exchange branch and the fourth heat exchange branch in this order according to the flow path, then flows out of the heat exchanger, and flows into the indoor heat exchanger 50 after being throttled. In this way, the circulation is accelerated with a smaller number of branches, and the heat transfer coefficient is increased, so that the high-temperature refrigerant can reach a lower temperature after flowing through the outdoor heat exchanger 60, and the refrigeration performance is improved.

The above description and the drawings illustrate embodiments of the disclosure sufficiently to enable those skilled in the art to practice them. Other embodiments may include structural and other modifications. The embodiments represent only 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 (10)

1. A heat exchanger, comprising:

a gas collecting tube (100);

the first heat exchange passage comprises one or more first heat exchange branches (200), wherein a first end of the first heat exchange branch (200) is connected with a first pipe orifice (101) of the gas collecting pipe (100), and a second end of the first heat exchange branch (200) is connected with a first flow dividing element (701);

the second heat exchange passage comprises one or more second heat exchange branches (300), wherein the first ends of the second heat exchange branches (300) are connected with the second pipe orifice (102) of the gas collecting pipe, and the second ends of the second heat exchange branches (300) are connected with the first flow dividing element (701);

a third heat exchange branch (400) having a first end connected to the second shunt element (702) and a second end connected to the first shunt element (701);

a fourth heat exchange branch (500), the first end of which is connected to the second shunt element (702), and the second end of which is connected to the third shunt element (703);

a shunt pipeline (600), the first end of which is connected in parallel with the second shunt element (702) and the third shunt element (703), and the second end of which is connected in parallel with the third pipe orifice (103) of the gas collecting pipe (100) and the first shunt element (701);

a check valve (10) provided in the shunt line (600); the direction of conduction of the one-way valve (10) is defined to flow from a first end of the shunt line (600) to a second end of the shunt line (600).

2. The heat exchanger according to claim 1, wherein the first port of the one-way valve (10) has a first communication port (11) and a second communication port (12), and the second port of the one-way valve (10) has a third communication port (13) and a fourth communication port (14).

3. The heat exchanger according to claim 2, wherein the shunt line (600) comprises:

a first shunt branch (601), a first end of which is connected to the first communication port (11), and a second end of which is connected to the second shunt element (702);

a second shunt branch (602), the first end of which is connected to the second communication port (12), and the second end of which is connected to the third shunt element (703);

a third shunt branch (603), the first end of which is connected with the third communication port (13), and the second end of which is connected with a third pipe orifice (103) of the gas collecting pipe (100);

-a fourth shunt branch (604), the first end of which is connected to said fourth communication port (14) and the second end of which is connected to said first shunt element (701).

4. A heat exchanger according to any one of claims 1 to 3, wherein the one-way valve (10) comprises a valve seat (20) and a stop (30), further comprising:

a flow dividing assembly (40) provided on the valve seat (20);

when the channel of the one-way valve (10) is conducted, the flow dividing assembly (40) can uniformly divide the refrigerant.

5. The heat exchanger according to claim 4, wherein the flow dividing assembly (40) comprises a mesh enclosure of semicircular structure, which is fastened to the outside of the valve seat (20).

6. The heat exchanger according to claim 4, wherein the flow splitting assembly (40) comprises:

a shaft (43) disposed within the valve seat (20);

the guide vanes (44) are provided with two guide vanes and are movably connected through the shaft rods (43);

the two guide vanes (44) are in a first posture, the two guide vanes (44) are of a flat plate structure, and the valve port (21) of the valve seat (20) can be closed; the two guide vanes (44) are in a second posture, the two guide vanes (44) are arranged at a set angle, the valve port (21) of the valve seat (20) can be opened, and the inflowing refrigerant can be uniformly split.

7. The heat exchanger according to claim 6, wherein the one-way valve (10) further comprises:

a flange (15) arranged in the valve seat (20);

when the two guide sheets (44) are in the second posture, the two guide sheets (44) can be abutted with the flange (15).

8. An air conditioner comprising a refrigerant circulation circuit composed of at least an indoor heat exchanger (50), an outdoor heat exchanger (60), a compressor (70) and a throttle device (80), characterized in that the indoor heat exchanger (50) and/or the outdoor heat exchanger (60) is a heat exchanger according to any one of claims 1 to 7.

9. The air conditioner according to claim 8, wherein the heat exchanger further comprises a confluence line connected to the third diverting element (703), the gas collecting pipe (100) of the heat exchanger being in communication with the compressor (70) when the indoor heat exchanger (50) is the heat exchanger, the confluence line being in communication with the outdoor heat exchanger (60).

10. The air conditioner according to claim 8, wherein the heat exchanger further comprises a confluence line connected to the third diverting element (703), the header (100) of the heat exchanger being in communication with the compressor (70) and the confluence line being in communication with the indoor heat exchanger (50) when the outdoor heat exchanger (60) is the heat exchanger.