CN114165946A - Heat exchanger and air conditioner - Google Patents

Abstract

The application relates to the technical field of air conditioners, and discloses a heat exchanger, includes: a gas collecting pipe; the gas collecting 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 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 and a first shunt element of a gas collecting pipe in parallel; the one-way valve is arranged on the shunt pipeline; the direction of conduction of the check valve is defined as flowing from the first end of the shunt line to the second end of the shunt line. The application provides a heat exchanger can guarantee the best performance demand of heat exchanger under different mode simultaneously. 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, the existing heat exchanger generally adopts a shunt pipe or a shunt to shunt, but the existing heat exchanger passes through the same pipeline when refrigerating and heating are carried out, and meets the refrigerating operation requirement through a supercooling pipeline when the heat exchanger carries out refrigeration; when the heat exchanger heats, the pressure loss of the system is increased through the supercooling pipeline, and the heat exchange efficiency of the system is reduced.

In order to reduce the pressure loss of a system and improve the heat exchange efficiency of the system, the prior art discloses a heat exchanger which comprises a gas collecting pipe; the first heat exchange passage comprises one or more first heat exchange branch pipes, the first ends of the first heat exchange branch pipes are connected with the first pipe openings of the gas collecting pipes, and the second ends of the first heat exchange branch pipes are connected with the first flow dividing elements; 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 shunt element; a first end of the third heat exchange branch is connected with a third pipe orifice of the gas collecting pipe, and a second end of the third heat exchange branch is connected with the second shunt element; a first end of the fourth heat exchange branch is connected with a fourth pipe orifice of the gas collecting pipe, and a second end of the fourth heat exchange branch is connected with the first shunt element; a first end of the fifth heat exchange branch is connected with a fifth pipe orifice of the gas collecting pipe, and a second end of the fifth heat exchange branch is connected with the second shunt element; a bypass line connecting the first shunt element and the second shunt element; the first check valve is arranged on the shunt bypass pipeline, and the conduction 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 conduction direction is defined to flow from the second pipe orifice to the first pipe orifice; and the third one-way valve is arranged between the third pipe orifice and the fourth pipe orifice of the gas collecting pipe, and the conduction direction is defined 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:

although the conventional heat exchanger has different flow path designs for cooling and heating, the heat exchanger of the above flow path cannot simultaneously exhibit the best performance of heating and cooling because the heat transfer performance of the heat exchanger is affected by different factors when the heat exchanger is used as an evaporator or a condenser.

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 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 can enable the heat exchanger to be in respective optimal branch flow paths under the working condition of heating or refrigerating, and further improve the efficiency of heating and refrigerating.

In some embodiments, a heat exchanger comprises: a gas collecting pipe; the first heat exchange passage comprises one or more first heat exchange branch circuits, wherein the first ends of the first heat exchange branch circuits are connected with the first pipe orifice of the gas collecting pipe, and the second ends of the first heat exchange branch circuits are connected with the first flow dividing element; the second heat exchange passage comprises one or more second heat exchange branch circuits, wherein the first ends of the second heat exchange branch circuits are connected with the second pipe openings of the gas collecting pipes, and the second ends of the second heat exchange branch circuits are connected with the first shunt elements; 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; a first end of the fourth heat exchange branch is connected with the second flow dividing element, and a 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 and a first shunt element of the gas collecting pipe in parallel; the one-way valve is arranged on the shunt pipeline; the direction of conduction of the check valve is defined as flowing 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 exchangers.

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 check valves on the branch pipelines through the first heat exchange passage, the second heat exchange passage, the third heat exchange branch and the fourth heat exchange branch, and are influenced by different factors according to the heat transfer performance of the heat exchanger. During refrigeration, a small number of branches is selected to accelerate circulation and increase heat transfer coefficient, so that high-temperature refrigeration capacity is improved. During heating, a plurality of branches are selected, so that the pressure drop is greatly reduced while the heat transfer coefficient is ensured, and the system pressure is improved, thereby improving the low-temperature heating capacity. Therefore, in both heating and cooling, the heat exchangers can be set to the respective optimum number of branches, and heating and cooling 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 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 structural diagram I of a heat exchanger provided by an embodiment of the present disclosure;

fig. 2 is a schematic structural diagram ii of a heat exchanger provided in the embodiment of the present disclosure;

FIG. 3 is a schematic structural view of a check valve provided in the embodiments of the present disclosure;

FIG. 4 is a schematic structural diagram of a check valve conduction provided by the embodiment of the present disclosure;

FIG. 5 is a schematic structural view of another check valve stop provided by the disclosed embodiment;

FIG. 6 is a schematic structural diagram of another check valve conduction provided by the embodiment of the present disclosure;

FIG. 7 is a first schematic structural diagram of a shunt assembly provided in an embodiment of the present disclosure;

fig. 8 is a schematic structural diagram of a shunt assembly provided in the embodiment of the present disclosure;

FIG. 9 is a schematic structural diagram III of a flow divider assembly provided in accordance with an embodiment of the present disclosure;

fig. 10 is a system diagram of an air conditioner according to an embodiment of the present disclosure.

Reference numerals:

100: a gas collecting pipe; 101: a first nozzle; 102: a second orifice; 103: a third nozzle; 104: a first header port; 105: a second header 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 line; 601: a first shunt branch; 602: a second shunt branch; 603: a third shunt branch; 604: a fourth branch circuit;

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

10: a valve body; 11: a first communication port; 12: a second communication port; 13: a third communication port; 14: a fourth communication port; 15: blocking edges;

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

30: a limiting member;

40: a flow diversion assembly; 41: a valve core; 42: a flow mixing member; 43: a shaft lever; 44: a guide plate; 45: a magnetic member; 46: a gasket;

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

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 examples and are not intended 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. For example, 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.

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 between 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.

The indoor heat exchanger, the outdoor heat exchanger, the throttle valve, the compressor, the gas-liquid separator and other components are connected through refrigerant pipelines to form a refrigerant circulating system for circularly conveying the refrigerant between the indoor unit and the outdoor unit; optionally, the refrigerant circulation system is at least limited to two refrigerant flow directions respectively used for a heating mode or a cooling mode, specifically, when the air conditioner operates in the cooling mode, the refrigerant circulation system conveys the refrigerant in a first refrigerant flow direction, and 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; and when the air conditioner operates in a heating mode, the refrigerant circulating system conveys the refrigerant in a second refrigerant flow direction, and the refrigerant flows through the indoor heat exchanger, the throttle valve and the outdoor heat exchanger in sequence after being discharged from the compressor 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, the heat exchanger can respectively convey the refrigerant through different flow paths in different air conditioning modes by setting the bypass pipeline and the check valve, so that the heat exchanger can simultaneously perform optimal performance of cooling and heating. Most of the embodiments provided by the application are the embodiments when the heat exchanger is used as an outdoor heat exchanger.

Referring to fig. 10, an embodiment of the present disclosure provides an air conditioner including a refrigerant circulation loop including at least an indoor heat exchanger 50, an outdoor heat exchanger 60, a compressor 70, and a throttling device 80, where the indoor heat exchanger 50 and/or the outdoor heat exchanger 60 are/is a heat exchanger configured as follows. The heat exchanger includes: the gas collecting pipe 100, the first heat exchange path, the second heat exchange path, the third heat exchange branch 400, the fourth heat exchange branch 500 and the shunt pipeline 600.

When in heating operation, the refrigerant in the pipe is in a low-temperature low-pressure area, and the heat transfer performance is mainly restrained by the heat transfer coefficient and the pressure drop together, therefore, when the heating flow is downward, 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, and the refrigerant respectively enters all different branches, so that the pressure drop can be greatly reduced while the heat transfer coefficient is ensured, the system pressure is improved, and the low-temperature heating quantity is improved.

When in refrigeration operation, the refrigerant in the pipe is in a high-temperature high-pressure area, the heat transfer performance is mainly influenced by the heat transfer coefficient, the pressure drop does not influence the refrigeration heat transfer performance, and the refrigerant is suitable for relatively less branches. Therefore, when the refrigerant flows downwards, the refrigerant respectively enters one or more first heat exchange branches 200 in a first heat exchange passage of the heat exchanger and one or more second heat exchange branches 300 in a second heat exchange passage, after being converged by the first flow dividing element 701, the refrigerant sequentially passes through the third heat exchange branch 400 and the fourth heat exchange branch 500, and after entering part of the heat exchange branches respectively and being converged, the refrigerant flows through the rest heat exchange branches, so that the circulation can be accelerated and the heat transfer coefficient can be increased, and the high-temperature refrigerating capacity can be improved. 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 check valves are arranged on the branch pipelines 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 influenced by different factors. During refrigeration, a small number of branches is selected to accelerate circulation and increase heat transfer coefficient, so that high-temperature refrigeration capacity is improved. During heating, a plurality of branches are selected, so that the pressure drop is greatly reduced while the heat transfer coefficient is ensured, and the system pressure is improved, thereby improving the low-temperature heating capacity. Therefore, in both heating and cooling, the heat exchangers can be set to the respective optimum number of branches, and heating and cooling efficiency can be synchronously improved.

As shown in fig. 1 to 2, in this 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 nozzle 101 of the gas collecting pipe 100, and a second end of the first heat exchange branch 200 is connected to the first flow dividing element 701; the second heat exchange path comprises one or more second heat exchange branches 300, wherein a first end of the second heat exchange branch 300 is connected with the second nozzle 102 of the gas collecting pipe, and a second end of the second heat exchange branch 300 is connected with the first flow dividing element 701; the first end of the third heat exchange branch 400 is connected with the second flow dividing element 702, and the second end of the third heat exchange branch 400 is connected with the first flow dividing element 701; a first end of the fourth heat exchange branch 500 is connected to the second flow dividing element 702, and a second end of the fourth heat exchange branch 500 is connected to the third flow dividing element 703; a first end of the diversion pipeline 600 is connected with a second diversion element 702 and a third diversion element 703 in parallel, and a second end is connected with a third pipe orifice 103 and a first diversion element 701 of the gas collecting pipe 100 in parallel; the check valve 10 is arranged on the shunt pipeline 600; the direction of communication of check valve 10 is defined as from the first end of shunt line 600 to the second end of shunt line 600.

When the heating flow is downward, the low-temperature and low-pressure refrigerant enters the first flow dividing element 701 from the second main port 105, after being divided, the refrigerant respectively enters the fourth heat exchange branch 500 and the first end of the flow dividing pipeline 600, the refrigerant entering the flow dividing pipeline 600 passes through the check 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 shunt pipeline 600 to the second end of the shunt pipeline 600, the refrigerant passing through the check valve 10 enters the first shunt element 701, and after being shunted, the refrigerant respectively enters the first heat exchange passage, the second heat exchange passage and the third heat exchange branch 400, and then respectively enters the heat exchange body for heat exchange. After the heat exchange between the fourth heat exchange branch 500 and the third heat exchange branch 400 is completed, the confluence flows into the second flow dividing element 702, and then enters the gas collecting pipe 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 gas enters the gas collecting pipe 100; the refrigerants passing through the header 100 are mixed and then flow out of the first main port 104. It can be seen that, the heat exchanger provided by the embodiment of the present disclosure has the advantages that the heat flow is downward, due to the arrangement of the diversion pipeline 600 and the check valve 10, the number of heat exchange branches in the downward heat exchange direction of the heating flow is increased, the pressure drop is greatly reduced, the system pressure is increased, the refrigerant can fully exchange heat with the surrounding environment, and the heating efficiency of the air conditioner is increased.

When the refrigerant flows downwards, the high-temperature and high-pressure refrigerant enters the gas collecting pipe 100 from the first main port 104, after being split, the refrigerant respectively enters the first heat exchange passage and the second heat exchange passage, and after respectively entering the heat exchange body for heat exchange, the refrigerant is converged and enters the first splitting element 701. At this time, the conduction direction of the check valve 10 is from the first end of the shunt pipeline 600 to the second end of the shunt pipeline 600, and the check valve enters the third heat exchange branch 400 after confluence, enters the heat exchange body for heat exchange, enters the second shunt element 702, enters the fourth heat exchange branch 500, enters the first shunt element 701, and flows out from the second header 105. It can be seen that, the heat exchanger provided by the embodiment of the present disclosure has the advantages that the refrigerant flows downwards, due to the arrangement of the diversion pipeline 600 and the check valve 10, the number of heat exchange branches of the refrigerant flowing downwards is reduced, the refrigerant circulation is accelerated, the heat transfer coefficient is increased, the refrigerant can exchange heat with the surrounding environment sufficiently, and the refrigeration 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 flow divider is a flow dividing element having one or more inflow inlets and one or more outflow outlets, optionally the flow divider is cylindrical and the interior is a brass type flow divider of hollow construction.

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 into the first communication port 11 and the second communication port 12 can flow out from 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 can flow into the valve port 21 of the valve seat 20 and flow into the third communication port 13 and the fourth communication port 14, respectively.

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

In this 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. When the refrigerant flows downwards, the refrigerant enters the check valve 10 from the second branch passage 602 through the second communication port 12, and enters the third flow dividing element 703 from the fourth communication port 14 for flow division; 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 pipe 100 through the third communication port 13. The check valve 10 prevents the refrigerant from flowing from the fourth branch 604 to the second and third flow dividing elements 702 and 703 in the downward direction of the refrigerant flow.

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

In this embodiment, the check valve includes a tubular valve body 10, a cylindrical cavity is formed inside the valve body 10, a valve seat 20 is disposed inside the cavity of the valve body 10, and the valve seat 20 has a valve port 21 for flowing a 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 further includes a valve core 41 disposed in the limiting space, where 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 with a conical structure faces the valve port 21; the sliding portion is slidably connected to an inner wall of the valve seat 20, and moves the valve body 41. When the refrigerant flows in the forward direction 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 a channel of the check valve is opened; when the refrigerant flows in from the limiting member 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, thereby closing the passage of the check valve.

As shown in connection with fig. 3 and 4, in some embodiments, the flow diversion assembly 40 comprises: and the mixed flow piece 42 is arranged outside the valve seat 20. The refrigerant can be uniformly and stably distributed in each communication port.

In the present 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 and distribute the refrigerants flowing out of the different branches together.

In the present embodiment, a valve seat 20 and a limiting member 30 are disposed in the valve body 10, and the mixed flow member 42 may include a filter, wherein the mixed flow 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 multiple branches flow in from one side of the valve seat 20, the valve core 41 is pushed open by the driving force 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 can also pass through the mixed flow member 42, the mixed flow member 42 mixes the flowing-in refrigerant, and after the refrigerant in the mixed flow member 42 reaches a certain volume, the refrigerant can flow out from the mixed flow member 42, and then the refrigerant is divided.

In some embodiments, the flow diversion assembly 40 comprises a semi-circular configuration of a mesh that snaps onto the outside of the valve seat 20. I.e. outside the valve seat 20. The half-round structure's gauze mask forms the hybrid space with locating part 30 for the refrigerant that passes through converges into the hybrid space, and through the effect of its mixed flow, makes the refrigerant have homogeneity and stability, ensures the uniformity of different intercommunication mouth flows.

As shown in connection with fig. 5-9, in some embodiments, the flow diversion assembly 40 comprises: a shaft 43 disposed within the valve seat 20; two guide blades 44 movably connected by a shaft rod 43; the two guide vanes 44 are in a first posture, and the two guide vanes 44 are in a flat plate structure and can close the valve port 21 of the valve seat 20; the two guide vanes 44 are in the second posture, and the two guide vanes 44 are arranged at a set angle, so that the valve port 21 of the valve seat 20 can be opened, and the inflowing refrigerant can be uniformly distributed. If the valve port 21 is small, the height of the entire valve seat 20 can be reduced.

In this embodiment, the shunt assembly 40 may further include a structure consisting of a shaft 43 and two guide vanes 44. With this structure, the functions of the existing spool 41 and flow mixing member 42 can be replaced. And the split is relatively independent.

In the present embodiment, a valve seat 20, a limiting member 30 and a flow dividing assembly 40 are disposed in the valve body 10, the flow dividing assembly 40 is disposed in a limiting space formed by the valve seat 20 and the limiting member 30, in this case, the flow dividing assembly 40 includes a shaft 43 fixedly installed in the valve seat 20, and the shaft 43 is located in the middle of the valve seat 20. Alternatively, the flow rates of different flow paths may be different according to different requirements of use, and the shaft 43 may be disposed at a position offset from the middle of the valve seat 20. However, the two guide vanes 44 also need to be designed in different sizes and shapes according to the above-mentioned requirements.

In this embodiment, the flow dividing assembly 40 includes a shaft 43 and two guide vanes 44, the shaft 43 and the two guide vanes 44 are disposed in the valve seat 20 at a certain distance from the limiting member 30 on the valve seat 20, and the valve body 10 is connected with a plurality of pipelines. When multiple pipelines flow from one side of the valve seat 20, the two guide vanes 44 are pushed open by the direction of the refrigerant, so that the refrigerant can flow into the valve port 21 of the valve seat 20, and at this time, the two guide vanes 44 already divide the valve seat 20 into two channels. Respectively enter different communication ports. Therefore, the confluence of a plurality of pipelines at the first end of the valve body 10 is realized, and a plurality of pipelines at the second end of the valve body 10 flow out.

In the present embodiment, the longest length of the two guide tabs 44 is L1, the relative distance between the limiting member 30 and the shaft 43 is L2, wherein L2 is greater than L1, so that when the two guide tabs 44 are pushed open by the pushing force in the direction of the cooling medium, the guide tabs 44 do not contact the limiting member 30, and the limiting member 30 can be effectively prevented from being damaged. Meanwhile, the position of the position-limiting member 30 can prevent the guide plate 44 from separating from the position-limiting space formed by the valve seat 20 and the position-limiting member 30.

Wherein, the two guide vanes 44 are hinged through the shaft lever 43, and when the two guide vanes 44 are in the first posture, the two guide vanes 44 are in a flat plate structure and can close the valve port 21 of the valve seat 20; when the two guide vanes 44 are in the second posture, the two guide vanes 44 are disposed at a predetermined angle, and the valve port 21 of the valve seat 20 can be opened. When the switch is turned on, the communication ports at the two ends are mutually independent. When the channel of the check valve is closed, the refrigerant flows reversely, and the two guide vanes 44 are driven by gravity or the refrigerant direction to close the valve port 21 of the valve seat 20, so as to realize the function of reversely closing the channel.

As shown in connection with fig. 7 and 8, in some embodiments, the flow diversion assembly 40 comprises: and a magnetic member 45 disposed on the guide vane 44 and capable of being adsorbed on the side of the valve port 21. When the channel of the check valve is closed, the sealing performance of the valve port 21 can be effectively improved.

In the present embodiment, the magnetic member 45 includes a magnetic block disposed on the conductive sheet 44. The guide vane 44 can be tightly connected with the side of the valve port 21 to control the flow of the refrigerant. The magnetic member 45 may be disposed on the surface of the guide vane 44 or disposed inside the guide vane 44. Optionally, the magnetic block is in a regular shape, and comprises a polygonal structure such as a circle or a square.

The magnetic block with the circular magnetic member 45 is disposed on the surface of the guide plate 44, and the guide plate 44 can be attracted to the valve port 21. The magnetic member 45 prevents the guide vane 44 from being opened when the refrigerant does not pass through the valve port 21. The sealing performance of the guide vane 44 and the valve port 21 is ensured.

In this embodiment, the magnetic member 45 may also be an annular magnetic strip, which matches the side of the valve port 21. Magnetic member 45 may be disposed on the surface of guide vane 44 or inside guide vane 44.

For example, the magnetic member 45 is disposed on the surface of the guide vane 44, the annular magnetic stripe is disposed on the surface of the guide vane 44, and the guide vane 44 can be attracted to the valve port 21. The magnetic member 45 prevents the guide vane 44 from being opened when the refrigerant does not pass through the valve port 21. The sealing performance of the guide vane 44 and the valve port 21 is ensured.

In some embodiments, the flow diversion assembly 40 further comprises: and a gasket 46 disposed on the guide vane 44 and having a shape adapted to the valve port 21. The magnetic member 45 may prevent the guide vane 44 from being opened from the valve port 21, however, there may be a gap between the guide vane 44 and the valve port 21. Therefore, the gasket 46 is provided to fill up the gap between the guide vane 44 and the valve port 21, thereby further ensuring the sealing property.

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

In this embodiment, the shunt assembly 40 includes a shaft 43, two guide vanes 44, a magnetic member 45, and a seal 46. The shaft lever 43 is installed in the valve seat 20, the two guide vanes 44 are hinged to the shaft lever 43, the two guide vanes 44 are in a semicircular structure, the two guide vanes 44 are in a first posture, the two guide vanes 44 are in a flat plate structure and are in a whole circular structure, and the diameter of the formed circle is larger than that of the valve port 21. The two gaskets 46 are arranged on the inner sides of the two guide vanes 44, the two gaskets 46 are also in a semicircular structure, and the diameter of the two gaskets 46 is matched with that of the valve port 21 and can just match with the valve port 21.

The magnetic member 45 is disposed outside the two gaskets 46, so that the gaskets 46 are connected with the inner side wall of the valve port 21, and the magnetic member 45 is connected with the edge side wall of the valve port 21. Thus, the two guide vanes 44 are in the first position to form a cover structure, which is fastened to the valve port 21 to further ensure the sealing performance.

In some embodiments, the one-way valve further comprises: a rib 15 disposed in the valve seat 20; when the two guide vanes 44 are in the second posture, both the two guide vanes 44 can abut against the rib 15.

In this embodiment, the inner portion of the valve body 10 is further flanged 15, which can be used to limit the range of motion of the guide vane 44. After the two guide vanes 44 are pushed open by the refrigerant direction pushing force, if the rib 15 is not provided, the two guide vanes 44 may collide with each other, which affects the stability and uniformity of the flow distribution.

For example, the refrigerant passes through the valve port 21 at a constant flow rate, and the two guide vanes 44 are opened. Because the two guide vanes 44 are connected together through the shaft rod 43, after the two guide vanes 44 are opened at a certain angle, the two guide vanes 44 can block each other to form a block, and then the stability and uniformity of the flow distribution are influenced. The valve seat 20 is provided with a rib 15, which can limit the opening angle of the two guide vanes 44 to a certain degree, and prevent the two guide vanes 44 from blocking each other to form a barrier.

Referring to fig. 5 and 6, in the present embodiment, the rib 15 may be a column structure or a plate structure, and the rib 15 is located at one side of the position-limiting member 30, so as to effectively abut against the two guide vanes 44.

In some embodiments, the rib 15 extends outwardly through the limiting member 30, separating the third communication port 13 and 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 degree, and the rib 15 may extend outward through the limiting member 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 abut against the rib 15, the refrigerant of the two guide pieces 44 may directly flow into the limited third communication port 13 and the fourth communication port 14.

In some embodiments, the heat exchanger further comprises a confluence pipeline connected to the third shunting element 703, wherein when the indoor heat exchanger 50 is a heat exchanger, the gas collecting pipe 100 of the heat exchanger is communicated with the compressor 70, and the confluence pipeline is communicated with the outdoor heat exchanger 60.

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

In this embodiment, the header 100 of the heat exchanger is in communication with the compressor 70, and the converging line is in communication with the outdoor heat exchanger 60. Therefore, in the heating flow direction, the high-temperature refrigerant discharged from the compressor 70 enters the heat exchanger from the first main port 104 of the gas collecting pipe 100, and flows through the first heat exchanging path, the second heat exchanging path, the third heat exchanging branch and the fourth heat exchanging branch in sequence according to the flow path, and then flows out of the heat exchanger, and flows into the outdoor heat exchanger 60 after throttling. Thus, the circulation is accelerated by a small number of branches, the heat transfer coefficient is increased, and the heat of the high-temperature refrigerant can be greatly transferred to the indoor environment, so that the heating performance is improved

In some embodiments, the heat exchanger further comprises a confluence pipeline connected to the third shunting element 703, wherein when the outdoor heat exchanger 60 is a heat exchanger, the gas collecting pipe 100 of the heat exchanger is communicated with the compressor 70, and the confluence pipeline is communicated with the indoor heat exchanger 50.

In the cooling mode, when the heat exchanger is used as the outdoor heat exchanger 60, the first header port 104 is a port through which the refrigerant flows in, and the second header port 105 is a port through which the refrigerant flows out; in the heating mode, when the heat exchanger is used as the exterior heat exchanger 60, the first header port 104 is a port through which the refrigerant flows out, and the second header 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 conflux line is in communication with the indoor heat exchanger 50. Therefore, when the refrigerant flows downward, the high-temperature refrigerant discharged from the compressor 70 enters the heat exchanger from the first main port 104 of the gas collecting pipe 100, sequentially flows through the first heat exchanging path, the second heat exchanging path, the third heat exchanging branch and the fourth heat exchanging branch according to the flow path, then flows out of the heat exchanger, and flows into the indoor heat exchanger 50 after being throttled. Thus, the circulation is accelerated by a small 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 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 (10)

1. A heat exchanger, comprising:

a gas header (100);

a first heat exchange path comprising one or more first heat exchange branches (200), wherein a first end of the first heat exchange branch (200) is connected with the first nozzle (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);

a second heat exchange path comprising one or more second heat exchange branches (300), wherein a first end of the second heat exchange branch (300) is connected with the second nozzle (102) of the gas collecting pipe, and a second end of the second heat exchange branch (300) is connected with the first flow dividing element (701);

a third heat exchange branch (400), the first end of which is connected with the second flow dividing element (702), and the second end of which is connected with the first flow dividing element (701);

a fourth heat exchange branch (500) having a first end connected to the second flow splitting element (702) and a second end connected to the third flow splitting element (703);

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

a check valve (10) disposed in the shunt line (600); the direction of conduction of the non-return valve (10) is defined as flowing from the first end of the shunt line (600) to the second end of the shunt line (600).

2. A heat exchanger according to claim 1, characterised in that the first port of the non-return valve (10) has a first communication port (11) and a second communication port (12), and the second port of the non-return valve (10) has a third communication port (13) and a fourth communication port (14).

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

a first flow-dividing branch (601), the first end of which is connected to the first communication opening (11) and the second end of which is connected to the second flow-dividing element (702);

a second branch line (602) having a first end connected to the second communication port (12) and a second end connected to the third flow dividing element (703);

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

a fourth branching branch (604) having a first end connected to the fourth communication port (14) and a second end connected to the first branching element (701).

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

a flow diversion assembly (40) disposed at the valve seat (20);

when the channel of the valve body (10) is communicated, the flow distribution assembly (40) can uniformly distribute the refrigerant.

5. The heat exchanger according to claim 4, characterized in that the flow dividing assembly (40) comprises a screen of semicircular configuration, which is snapped outside the valve seat (20).

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

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

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

the two guide vanes (44) are in a first posture, and the two guide vanes (44) are in a flat plate structure and can close the valve port (21) of the valve seat (20); 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 inflowing refrigerants can be uniformly distributed.

7. The heat exchanger, as set forth in claim 6, characterized in that the non-return valve (10) further comprises:

a rib (15) disposed within the valve seat (20);

when the two guide vanes (44) are in the second posture, the two guide vanes (44) can be abutted against 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 throttling device (80), characterized in that the indoor heat exchanger (50) and/or the outdoor heat exchanger (60) are/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 dividing element (703), wherein the header (100) of the heat exchanger is in communication with the compressor (70) and the confluence line is in communication with the outdoor heat exchanger (60) when the indoor heat exchanger (50) is the heat exchanger.

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

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