Heat exchanger and air conditioner

Abstract

The invention relates to the technical field of heat exchangers, and discloses a heat exchanger which comprises a header assembly, a first heat exchanger, a second heat exchanger and a third heat exchanger, and a refrigerant can circulate in the header assembly in the first direction or in the second direction opposite to the first direction; the one-way valve assembly is arranged in the header assembly and comprises a valve plate structure; the valve plate structure is movably arranged, and under the condition that a refrigerant circulates in the first direction, the valve plate structure moves to a first position so as to avoid circulation of the refrigerant; and under the condition that the refrigerant circulates in the second direction, the valve plate structure moves to the second position so as to block circulation of the refrigerant. In this way, one-way circulation of the refrigerant is achieved under the action of the valve plate structure, and the valve plate structure is arranged in the header assembly, so that the size of the heat exchanger is small. The invention further discloses the air conditioner.

Description

Technical Field

[0001] The present application relates to the technical field of heat exchangers, for example, to a heat exchanger and an air conditioner. Background Art

[0002] The air conditioner generally consists of a compressor, an outdoor heat exchanger, a throttling device, and an indoor heat exchanger to form a refrigerant circulation loop. When the air conditioner is in cooling mode, the outdoor heat exchanger acts as a condenser; when the air conditioner is in heating mode, the outdoor heat exchanger acts as an evaporator; the refrigerant flows in opposite directions in the outdoor heat exchanger in different modes, and the refrigerant flow path in different modes affects the performance of the outdoor heat exchanger and the air conditioner.

[0003] The related technology discloses a heat exchanger including a main pipe section and a bypass pipe section. By installing one-way valves on multiple bypass pipes and utilizing the one-way conduction function of the one-way valves, the heat exchanger flows through different flow paths when used as an evaporator and a condenser, respectively, to achieve variable diversion.

[0004] In the process of implementing the embodiments of the present disclosure, it is found that there are at least the following problems in the related art:

[0005] The bypass pipe section is generally arranged on the outer side of the heat exchanger body, and the conventional one-way valve is relatively large in size. After the one-way valve is installed in the bypass pipe section, the overall volume of the heat exchanger is relatively large.

[0006] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present application, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0007] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical components or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

[0008] The embodiments of the present disclosure provide a heat exchanger and an air conditioner, which solve the problem of a large volume caused by using a conventional one-way valve in the heat exchanger.

[0009] In some embodiments, the heat exchanger comprises:

[0010] A header assembly, in which the refrigerant can flow in a first direction or in a second direction opposite to the first direction;

[0011] The one-way valve assembly is arranged in the manifold assembly, and includes a valve plate structure; the valve plate structure is movably arranged, and when the refrigerant flows in a first direction, the valve plate structure moves to a first position to avoid the flow of the refrigerant; when the refrigerant flows in a second direction, the valve plate structure moves to a second position to block the flow of the refrigerant.

[0012] In some embodiments, the air conditioner includes the heat exchanger.

[0013] The heat exchanger and air conditioner provided by the embodiments of the present disclosure can achieve the following technical effects:

[0014] When the refrigerant flows in the header assembly in a first direction, the valve plate structure moves to the first position to avoid the refrigerant flow; when the refrigerant flows in the header assembly in a second direction, the valve plate structure moves to the second position to block the refrigerant flow. In this way, the refrigerant realizes one-way flow under the action of the valve plate structure, and the valve plate structure is arranged in the header assembly, so the volume of the heat exchanger is small.

[0015] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] One or more embodiments are exemplarily described by corresponding drawings, which do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements, and the drawings do not constitute a scale limitation, and wherein:

[0017] Figure 1 is a schematic diagram of a second position of a valve plate structure provided by an embodiment of the present disclosure;

[0018] Figure 2 is a structural schematic diagram of a manifold assembly and a valve seat provided in an embodiment of the present disclosure;

[0019] Figure 3 is a schematic diagram of a first position of a valve plate structure provided by an embodiment of the present disclosure;

[0020] Figure 4 is a schematic structural diagram of a third stopper and a fourth stopper provided in an embodiment of the present disclosure;

[0021] Figure 5 is a schematic structural diagram of a third limiting rod provided in an embodiment of the present disclosure;

[0022] Figure 6 is a schematic structural diagram of a first stopper and a second stopper provided in an embodiment of the present disclosure;

[0023] Figure 7 It is a schematic diagram of a first stopper and a second stopper attracted against each other provided by an embodiment of the present disclosure;

[0024] Figure 8 is a schematic structural diagram of another first stopper and a second stopper provided in an embodiment of the present disclosure;

[0025] Fig. 9 is a schematic diagram of another first stopper and a second stopper attracted against each other provided by an embodiment of the present disclosure;

[0026] Fig.10 is a schematic diagram of a second position of another valve plate structure provided by an embodiment of the present disclosure;

[0027] Fig.11 is a schematic diagram of a first position of another valve plate structure provided by an embodiment of the present disclosure;

[0028] Fig.12 is a schematic diagram of a natural state of a spring member provided by an embodiment of the present disclosure;

[0029] Fig.13 is a schematic diagram of a compressed state of a spring member provided by an embodiment of the present disclosure;

[0030] Fig.14 is a schematic diagram of a natural state of another spring member provided by an embodiment of the present disclosure;

[0031] Fig.15 is a schematic diagram of a compressed state of another spring member provided by an embodiment of the present disclosure;

[0032] Fig.16 is a schematic structural diagram of a limiting column provided in an embodiment of the present disclosure;

[0033] Fig.17 is a schematic diagram of an independent plate provided by an embodiment of the present disclosure being blocked by a limiting column;

[0034] Fig.18 is a structural schematic diagram of a heat exchanger provided in an embodiment of the present disclosure;

[0035] Fig.19 is a schematic diagram of a refrigerant flow path of a heat exchanger provided in an embodiment of the present disclosure;

[0036] Fig. 20 is a structural schematic diagram of another heat exchanger provided in an embodiment of the present disclosure;

[0037] Fig.21 It is a schematic diagram of a refrigerant flow path of another heat exchanger provided in an embodiment of the present disclosure.

[0038] Reference numerals:

[0039] 100: header assembly; 110: first header; 111: first chamber; 112: second chamber; 113: first baffle; 114: second baffle; 120: second header; 130: flat tube assembly; 131: first flat tube; 132: second flat tube; 133: third flat tube; 140: first main pipe; 150: second main pipe;

[0040] 200: valve seat; 201: flow port; 202: installation cavity; 210: first plate; 220: second plate; 230: independent plate; 231: gravity block; 240: rotating shaft; 250: limiting structure; 251: first limiting rod; 252: second limiting rod; 253: third limiting rod; 254: limiting block; 255: limiting column; 260: first anti-shake structure; 261: first block; 262: second block; 270: second anti-shake structure; 271: third block; 272: fourth block; 280: spring member. DETAILED DESCRIPTION

[0041] In order to be able to understand the features and technical contents of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0042] The terms "first", "second", etc. in the specification and claims of the disclosed embodiments and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate to describe the disclosed embodiments here. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0043] In the embodiments of the present disclosure, the terms "upper", "lower", "inside", "middle", "outside", "front", "back" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the embodiments of the present disclosure and their embodiments, and are not intended to limit the indicated devices, elements or components to have a specific direction, or to be constructed and operated in a specific direction. Moreover, in addition to being used to indicate directions or positional relationships, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in certain circumstances. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0044] In addition, the terms "disposed", "connected", and "fixed" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0045] Unless otherwise stated, the term "plurality" means two or more.

[0046] 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 indicates: A or B.

[0047] The term "and / or" is a description of the association relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or, A and B.

[0048] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

[0049] Combination Figure 1-21 As shown, the embodiment of the present disclosure provides a heat exchanger, including a header assembly 100 and a one-way valve assembly. The refrigerant can flow in the header assembly 100 along a first direction or along a second direction opposite to the first direction; the one-way valve assembly is arranged in the header assembly 100, and the one-way valve assembly includes a valve plate structure; the valve plate structure is movably arranged, and when the refrigerant flows in the first direction, the valve plate structure moves to a first position to avoid the refrigerant from flowing; when the refrigerant flows in the second direction, the valve plate structure moves to a second position to block the refrigerant from flowing.

[0050] In this embodiment, when the refrigerant flows in the header assembly 100 in a first direction, the valve plate structure moves to the first position to avoid the refrigerant flow; when the refrigerant flows in the header assembly 100 in a second direction, the valve plate structure moves to the second position to block the refrigerant flow. In this way, the refrigerant achieves one-way flow under the action of the valve plate structure, and the valve plate structure is arranged in the header assembly 100, so the volume of the heat exchanger is small.

[0051] Optionally, the valve plate structure includes a valve seat 200 and a valve plate. The valve seat 200 divides the manifold assembly 100 into a first chamber 111 and a second chamber 112, and the valve seat 200 is provided with a flow port 201; the valve plate is disposed in the second chamber 112, and is pivotally connected to the valve seat 200 via a rotating shaft 240; and the flow port 201 is avoided when the valve plate pivots to the first position, and the flow port 201 is blocked when the valve plate pivots to the second position; wherein the refrigerant flows from the first chamber 111 to the second chamber 112 as the first direction.

[0052] In this embodiment, when the refrigerant flows in the first direction, the valve plate flips to the first position to avoid the flow port 201, and the refrigerant in the first chamber 111 can flow to the second chamber 112 through the flow port 201. When the refrigerant flows in the second direction, the valve plate flips to the second position to block the flow port 201, and the refrigerant in the second chamber 112 cannot flow to the first chamber 111 through the flow port 201.

[0053] Optionally, the valve seat 200 is disposed around the inner wall of the manifold assembly 100, and a flow port 201 is disposed at the center of the valve seat 200. Both ends of the rotating shaft 240 are respectively mounted on the valve seat 200.

[0054] For example, the inner diameter of the manifold assembly 100 is circular, and the valve seat 200 is configured as a circular ring. The outer circle of the valve seat 200 is in contact with the inner wall of the pipe, and the inner circle of the valve seat 200 serves as a flow port 201 .

[0055] Optionally, the first chamber 111 is located below the second chamber 112 .

[0056] Optionally, the valve plate includes a first plate 210 and a second plate 220. The first side of the first plate 210 is pivoted to the rotating shaft 240; the first side of the second plate 220 is pivoted to the rotating shaft 240; wherein the plate surfaces of the first plate 210 and the second plate 220 correspond to each other and can be flipped relative to each other; Figure 3 As shown, when the refrigerant flows in a first direction to impact the valve plate, the first plate 210 and the second plate 220 are flipped to form an angle toward the second chamber 112 to serve as the first position; Figure 1 As shown, when the refrigerant flows in the second direction to impact the valve plate, the first plate 210 and the second plate 220 are flipped to be parallel to each other and are both blocked by the valve seat 200 to serve as the second position.

[0057] In this embodiment, when the refrigerant flows in the first direction, the pressure in the first chamber 111 is relatively large, and the refrigerant impacts the valve plate through the flow port 201. The first plate 210 and the second plate 220 are subjected to a combined force toward the second chamber 112, and are respectively flipped around the rotation axis 240 toward the second chamber 112, and the two are at an angle toward the second chamber 112. At this time, it is the first position of the valve plate. When the refrigerant flows in the second direction, the pressure in the second chamber 112 is relatively large, and the refrigerant impacts the valve plate. The first plate 210 and the second plate 220 are subjected to a combined force toward the first chamber 111, and are respectively flipped around the rotation axis 240 toward the first chamber 111. When the first plate 210 and the second plate 220 are flipped to be horizontal with each other, both are resisted by the valve seat 200 and jointly block the flow port 201. At this time, it is the second position of the valve plate.

[0058] Alternatively, if Figure 2 As shown, the first plate 210 and the second plate 220 are both constructed in an arcuate shape. Moreover, the chord side of the arcuate shape is pivotally connected to the valve seat 200 through the rotating shaft 240. Preferably, the first plate 210 and the second plate 220 are both constructed in a semicircular shape with the same area.

[0059] Alternatively, if Figure 3 As shown, when the valve plate is in the first position, the angle α between the first plate 210 and the second plate 220 is greater than or equal to 20°. In this way, when the refrigerant switches from flowing in the first direction to flowing in the second direction, it is beneficial for the valve plate to flip from the first position to the second position.

[0060] Exemplarily, the angle α between the first plate 210 and the second plate 220 can be selected to be 20°, 25°, 30°, 35°, 40°, 45°, 50°, 60°, 65°, 70°, 75°, 80°, 85°, 90°, 95°, 100°, 105°, 110°, 115° or 120°.

[0061] Optionally, the one-way valve assembly further includes a limiting structure 250. The limiting structure 250 is used to limit the valve plate from further turning toward the second chamber 112 when the valve plate turns to the first position.

[0062] In this embodiment, if the valve plate can continue to flip after flipping to the first position, even the first plate 210 and the second plate 220 are bonded together, at this time, if the refrigerant switches from flowing in the first direction to flowing in the second direction, it is difficult for the valve plate to flip back from the first position to the second position.

[0063] Optionally, the limiting structure 250 includes a first limiting rod 251 and a second limiting rod 252. The first limiting rod 251 corresponds to the first plate 210, and is blocked by the first limiting rod 251 when the first plate 210 is flipped to the first position; the second limiting rod 252 corresponds to the second plate 220, and is blocked by the second limiting rod 252 when the second plate 220 is flipped to the first position.

[0064] In this embodiment, both ends of the first limiting rod 251 and the second limiting rod 252 are mounted on the inner wall of the manifold assembly 100 , and respectively limit the first plate 210 and the second plate 220 .

[0065] Optionally, the first limiting rod 251 can form magnetic attraction with the first plate 210, and the second limiting rod 252 can form magnetic attraction with the second plate 220. Here, there is no limitation on which is made of a magnet and which is made of a ferromagnetic material, as long as the magnetic attraction effect can be achieved. Among them, ferromagnetic materials include metals such as iron, nickel and cobalt, and magnets can attract ferromagnetic materials.

[0066] Exemplarily, the first limiting rod 251 and the second limiting rod 252 are both made of magnets; the first plate 210 and the second plate 220 are made of ferromagnetic materials. When the first plate 210 is blocked by the first limiting rod 251, the first limiting rod 251 attracts the first plate 210. When the second plate 220 is blocked by the second limiting rod 252, the second limiting rod 252 attracts the second plate 220. In this way, when the flow rate of the refrigerant in the first flow direction is unstable, the valve plate is magnetically attracted and does not vibrate, thereby effectively reducing abnormal noise.

[0067] In another exemplary embodiment, the first plate 210 and the second plate 220 are both made of magnets, and the first limiting rod 251 and the second limiting rod 252 are both made of ferromagnetic materials. In this way, the effect of magnetic attraction without shaking can also be achieved.

[0068] In another exemplary embodiment, the first plate 210 and the second plate 220 are both made of magnets and have a first magnetic pole; the first limiting rod 251 and the second limiting rod 252 are both made of magnets and have a second magnetic pole, wherein the second magnetic pole is opposite to the first magnetic pole. In this way, the effect of magnetic attraction without shaking can also be achieved.

[0069] Optionally, the first limiting rod 251 and the second limiting rod 252 are arranged parallel to the rotating shaft 240. In this way, the first limiting rod 251 can form a larger contact area with the plate surface of the first plate 210, and the second limiting rod 252 can form a larger contact area with the plate surface of the second plate 220, thereby improving the magnetic attraction effect.

[0070] Alternatively, if Figure 4 and Figure 5As shown, the limiting structure 250 includes a third limiting rod 253. The third limiting rod 253 corresponds to the first plate 210 and the second plate 220 at the same time, and the first plate 210 and the second plate 220 are simultaneously blocked by the third limiting rod 253 when they are flipped to the first position.

[0071] In this embodiment, both ends of the third limiting rod 253 are mounted on the inner wall of the manifold assembly 100 , and simultaneously limit the first plate 210 and the second plate 220 .

[0072] Optionally, the third limiting rod 253 is arranged perpendicular to the rotating shaft 240 .

[0073] Optionally, the limiting structure 250 includes a limiting block, which is disposed on the side of the rotating shaft 240 facing the second chamber 112 and is located between the first plate 210 and the second plate 220. In this way, after the valve plate is flipped to the first position, the limiting block is used to prevent the first plate 210 and the second plate 220 from being bonded together.

[0074] It is understandable that the above-mentioned various limiting structures 250 can be combined with each other without conflict.

[0075] Optionally, the one-way valve assembly further includes a first anti-shake structure 260. The first anti-shake structure 260 is used to keep the valve plate stable in the first position.

[0076] In this embodiment, the valve plate flips to the first position under the impact of the refrigerant. If the refrigerant flow rate decreases, the combined force on the valve plate decreases and the valve plate flips slightly toward the second chamber 112. In addition, as the refrigerant flow rate increases and decreases alternately under different working conditions, the valve plate vibrates abnormally. The high-speed refrigerant impacting the abnormally vibrating valve plate will produce abnormal noise, and the vibration of the valve plate will also aggravate the unstable flow rate, forming a vicious cycle.

[0077] Optionally, the first anti-shake structure 260 includes a first stopper 261 and a second stopper 262. The first stopper 261 is disposed on the surface of the first plate 210 located in the second chamber 112; the second stopper 262 is disposed on the surface of the second plate 220 located in the second chamber 112 and corresponds to the first stopper 261; wherein the first stopper 261 can form a magnetic attraction with the second stopper 262, and / or the first plate 210 can form a magnetic attraction with the second plate 220. Here, there is no limitation on which is made of a magnet and which is made of a ferromagnetic material, as long as the magnetic attraction effect can be achieved.

[0078] Exemplarily, the first stopper 261 and the second stopper 262 are both made of magnets and have opposite magnetic properties. When the first plate 210 and the second plate 220 are flipped to the first position, the first stopper 261 and the second stopper 262 attract each other. In this way, the valve plate is kept stable in the first position by magnetic force.

[0079] In another exemplary embodiment, the first plate 210 and the second plate 220 are both made of magnets and have opposite magnetic properties. When the valve plate is flipped to the first position, the first plate 210 and the second plate 220 attract each other, and the first stopper 261 and the second stopper 262 can play a limiting role. In this way, the valve plate is kept stable in the first position by magnetic force.

[0080] Alternatively, if Figure 6 and Figure 7 As shown, the cross-sections of the first stopper 261 and the second stopper 262 are both constructed as triangles, and one of the sharp corners of the two is adjacently arranged at the rotating shaft 240. Preferably, the cross-sections of the first stopper 261 and the second stopper 262 are constructed as the same right triangle. The hypotenuse of the cross-section of the first stopper 261 is arranged on the first plate 210, and the hypotenuse of the cross-section of the second stopper 262 is arranged on the second plate 220. In addition, the right-angled sides of the cross-sections of the first stopper 261 and the second stopper 262 correspond to each other, and when the first plate 210 and the second plate 220 are flipped to the first position, the corresponding right-angled sides are sucked together.

[0081] Alternatively, if Figure 8 and Fig. 9 As shown, the cross-sections of the first stopper 261 and the second stopper 262 are both configured as rectangles, and both are arranged away from the rotating shaft 240 and correspond to each other. Preferably, the side lines of the cross-sections of the first stopper 261 and the second stopper 262 correspond to each other, and when the first plate 210 and the second plate 220 are flipped to the first position, the corresponding side lines are sucked together.

[0082] Optionally, the one-way valve assembly further includes a second anti-shake structure 270, and the second anti-shake structure 270 is used to keep the valve plate stable in the second position. When the refrigerant flows in the second direction, the valve plate will also shake in the second position due to flow changes.

[0083] Alternatively, if Figure 4 and Figure 5 As shown, the second anti-shake structure 270 includes a third stopper 271 and a fourth stopper 272. The third stopper 271 is disposed on the first plate 210 and corresponds to the valve seat 200; the fourth stopper 272 is disposed on the second plate 220 and corresponds to the valve seat 200; the third stopper 271 can form a magnetic attraction with the valve seat 200, and / or the fourth stopper 272 can form a magnetic attraction with the valve seat 200. Here, there is no limitation on which is made of a magnet and which is made of a ferromagnetic material, as long as the magnetic attraction effect can be achieved.

[0084] In this embodiment, when the valve plate is turned over to the second position, the third stopper 271 and the fourth stopper 272 are blocked by the valve seat 200, and both of them can attract each other with the valve seat 200. In this way, the valve plate is kept stable in the second position by magnetic force.

[0085] Alternatively, if Fig.18 As shown, the header assembly 100 includes a first header 110 and a second header 120, and the heat exchanger further includes a flat tube assembly 130. A valve plate structure is provided inside the tube of the first header 110, and its first chamber 111 is connected to the first main line 140; a valve plate structure is provided inside the tube of the second header 120, and its second chamber 112 is connected to the second main line 150; the flat tube assembly 130 includes a first flat tube 131, a second flat tube 132 and a third flat tube 133. The first end of the first flat tube 131 is connected to the first chamber 111 of the first header 110, and the second end thereof is connected to the first chamber 111 of the second header 120; the first end of the second flat tube 132 is connected to the second chamber 112 of the first header 110, and the second end thereof is connected to the first chamber 111 of the second header 120; the first end of the third flat tube 133 is connected to the second chamber 112 of the first header 110, and the second end thereof is connected to the second chamber 112 of the second header 120.

[0086] In this embodiment, the heat exchanger includes a microchannel heat exchanger, and the number of the first flat tube 131 to the third flat tube 133 includes one or more. In this way, the heat exchanger can achieve a variable flow splitting function through the design of the one-way valve assembly and the connection relationship design of the flat tubes.

[0087] like Fig.19 As shown in FIG. 1 , when the refrigerant enters the heat exchanger from the first main line 140, the refrigerant in the header assembly 100 flows in the first direction, and the two valve plate structures avoid the corresponding flow openings 201. The refrigerant in the first main line 140 enters the first chamber 111 of the first header 110, and the refrigerant in the first chamber 111 has two branches: one flows to the first chamber 111 of the second header 120 through the first flat tube 131, and the other flows to the second chamber 112 of the first header 110 through the flow opening 201. The refrigerant in the second chamber 112 of the first header 110 has two branches: one flows to the first chamber 111 of the second header 120 through the second flat tube 132, and the other flows to the second chamber 112 of the second header 120 through the third flat tube 133. The refrigerant in the first chamber 111 of the second header 120 flows to its second chamber 112 through the flow opening 201, and continues to flow out of the heat exchanger through the second main line 150. It can be seen that the first flat tube 131 , the second flat tube 132 and the third flat tube 133 are connected in parallel.

[0088] like Fig.19As shown in FIG. 2 , when the refrigerant enters the heat exchanger from the second main line 150, the refrigerant in the header assembly 100 flows in the second direction, and the two valve plate structures respectively block the corresponding flow ports 201. The refrigerant in the second main line 150 enters the second chamber 112 of the second header 120, and the refrigerant in the second chamber 112 flows to the second chamber 112 of the first header 110 through the third flat tube 133. The refrigerant in the second chamber 112 of the first header 110 flows to the first chamber 111 of the second header 120 through the second flat tube 132. The refrigerant in the first chamber 111 of the second header 120 flows to the first chamber 111 of the first header 110 through the third flat tube 133, and continues to flow out of the heat exchanger through the first main line 140. It can be seen that the first flat tube 131, the second flat tube 132 and the third flat tube 133 are in a series relationship.

[0089] Optionally, when the heat exchanger is used as an evaporator, the refrigerant enters from the first main line 140 and flows out from the second main line 150, and the refrigerant in the header assembly 100 flows in a first direction; and the valve plate structure automatically moves to the first position under the impact of the refrigerant. When the heat exchanger is used as a condenser, the refrigerant enters from the second main line 150 and flows out from the first main line 140, and the refrigerant in the header assembly 100 flows in a second direction; and the valve plate structure automatically moves to the second position under the impact of the refrigerant.

[0090] In this embodiment, the valve plate structure automatically adjusts its state when the refrigerant flows in different directions, switching between the first position and the second position, so that the refrigerant flow path of the heat exchanger is different under different working conditions, realizing variable diversion. In addition, when the heat exchanger is used as an evaporator, there are multiple branches, thereby effectively reducing the pressure drop along the process. When the heat exchanger is used as a condenser, there are fewer branches, thereby increasing the refrigerant flow rate and the heat transfer coefficient inside the tube. In this way, the energy efficiency of the heat exchanger is effectively improved.

[0091] The valve plate structure of the above embodiment is composed of two plates, namely a first plate 210 and a second plate 220 which are turned relative to each other.

[0092] In other embodiments, Figure 10-15 As shown, the valve plate structure includes an independent plate 230, and the first side of the independent plate 230 can be flipped around the second side; when the refrigerant flows in the first direction, the independent plate 230 flips to the first position to avoid the flow of the refrigerant; when the refrigerant flows in the second direction, the independent plate 230 flips to the second position to block the flow of the refrigerant.

[0093] In this embodiment, when the refrigerant flows in the header assembly 100 in a first direction, the independent plate 230 flips to the first position to avoid the refrigerant flow; when the refrigerant flows in the header assembly 100 in a second direction, the independent plate 230 flips to the second position to block the refrigerant flow. In this way, the refrigerant achieves one-way flow under the action of the independent plate 230, and the valve plate structure is arranged in the header assembly 100, so the volume of the heat exchanger is small.

[0094] Optionally, the valve plate structure also includes a valve seat 200, which divides the manifold assembly 100 into a first chamber 111 and a second chamber 112, and the valve seat 200 is provided with a flow port 201; and the independent plate 230 is pivotally connected to the valve seat 200 through a rotating shaft 240, and the independent plate 230 avoids the flow port 201 when flipped to the first position, and blocks the flow port 201 when flipped to the second position; wherein the first direction is the flow of the refrigerant from the first chamber 111 to the second chamber 112.

[0095] In this embodiment, the first chamber 111 is located below the second chamber 112. When the refrigerant flows in the first direction, the independent plate 230 flips to the first position to avoid the flow opening 201, and the refrigerant in the first chamber 111 flows to the second chamber 112 through the flow opening 201. When the refrigerant flows in the second direction, the independent plate 230 flips to the second position to block the flow opening 201, and the refrigerant in the second chamber 112 cannot flow to the first chamber 111 through the flow opening 201.

[0096] Optionally, the valve seat 200 is disposed around the inner wall of the manifold assembly 100 , and both ends of the rotating shaft 240 are respectively mounted on the valve seat 200 .

[0097] Exemplarily, the valve seat 200 is divided into left and right sides at the center. The flow port 201 is arranged on the left side of the valve seat 200 , and the rotating shaft 240 is mounted at the center or right side of the valve seat 200 .

[0098] Optionally, the plane where the independent plate 230 is located when it is in the first position and the plane where the independent plate 230 is located when it is in the second position are inclined with respect to each other. Preferably, the inclination angle is 90°.

[0099] In this embodiment, the plane where the valve seat 200 is located is horizontally arranged. When the independent plate 230 is located at the second position, the independent plate 230 is attached to the valve seat 200. When the independent plate 230 is located at the first position, the independent plate 230 is perpendicular to the valve seat 200.

[0100] Optionally, the independent plate 230 is constructed in an arcuate shape, and the chord side of the arcuate shape is pivotally connected to the valve seat 200 via the rotating shaft 240. Preferably, the independent plate 230 is constructed in a semicircular shape.

[0101] Optionally, the one-way valve assembly further includes an auxiliary structure, which is used to assist the independent plate 230 to flip from the first position to the second position.

[0102] In this embodiment, the valve plate structure formed by the independent plate 230 is more difficult to flip from the first position to the second position than the valve plate structure formed by the first plate 210 and the second plate 220. Here, when the refrigerant switches from the first flow direction to the second flow direction, the auxiliary structure helps the independent plate 230 to flip to the second position, thereby ensuring the reliability of the one-way valve assembly.

[0103] Optionally, the auxiliary structure includes a spring member 280. The spring member 280 is disposed in the second chamber 112; a first end of the spring member 280 is connected to the independent plate 230 or faces the independent plate 230, and a second end of the spring member 280 is fixed; and when the independent plate 230 is in the second position, the spring member 280 is in a natural state, and when the independent plate 230 is in the first position, the spring member 280 is compressed by the independent plate 230.

[0104] In this embodiment, the refrigerant in the first flow direction impacts the independent plate 230, and the independent plate 230 flips from the second position to the first position. At this time, the spring member 280 is subjected to force and is compressed by the independent plate 230. When the refrigerant switches to the second flow direction, the spring member 280 rebounds to the natural state, and the independent plate 230 flips to the second position under the elastic force. When the first position is perpendicular to the second position, as long as the independent plate 230 is tilted toward the second position under the elastic force, a certain force area will be generated. Furthermore, the refrigerant in the second flow direction impacts the force area, effectively flipping the independent plate 230 to the second position.

[0105] For example, Fig.10 and Fig.11 As shown, the spring member 280 includes a torsion spring, the axis of which is arranged parallel to the rotating shaft 240 , a first end of the torsion spring is connected to the second end of the independent plate 230 , and a second end is fixed to the valve seat 200 .

[0106] Another exemplary example is, Fig.12 and Fig.13 The spring member 280 shown includes a compression spring, the axis of which is arranged perpendicular to the rotating shaft 240 , a first end of the compression spring faces the first end of the independent plate 230 , and a second end is fixed to the second baffle 114 .

[0107] In another exemplary embodiment, the spring member 280 includes a torsion spring and a compression spring, and the torsion spring and the compression spring are used to provide elastic force to the independent plate, thereby increasing the elastic force on the independent plate.

[0108] Alternatively, if Fig.14 and Fig.15As shown, a gravity block 231 is provided at the second end of the independent plate 230; a mounting cavity 202 is provided on the valve seat 200, the mounting cavity 202 has a mounting opening facing the second chamber, and the gravity block 231 corresponds to the mounting opening; the auxiliary structure includes a spring member 280, the spring member 280 is arranged in the mounting cavity 202, and its first end is suspended and extends out of the mounting opening; and when the independent plate 230 is located in the second position, the spring member 280 is in a natural state, and when the independent plate 230 is located in the first position, the spring member 280 is compressed by the gravity block 231.

[0109] In this embodiment, the refrigerant in the first flow direction impacts the independent plate 230, and the independent plate 230 flips from the second position to the first position. At this time, the gravity block 231 flips toward the installation port synchronously, and the first end of the spring member 280 is compressed by the gravity block 231. When the refrigerant switches to the second flow direction, the spring member 280 rebounds to the natural state, and the gravity block 231 is acted upon by the elastic force and drives the independent plate 230 to flip to the second position. In this way, the weight of the second end of the independent plate 230 is increased by the gravity block 231, making it easier for the independent plate 230 to flip from the second position to the first position, and is conducive to maintaining stability in the first position.

[0110] Optionally, the weight block 231 is arranged perpendicular to the independent plate 230. The first end of the weight block 231 is connected to the independent plate 230, and the second end is suspended. Preferably, the weight of the second end of the weight block 231 is greater than the weight of the first end.

[0111] Optionally, the gravity block 231 is made of a magnet; the auxiliary structure also includes an electromagnetic module, and both ends of the coil of the spring member 280 are electrically connected to the electromagnetic module; the electromagnetic module is used to supply current to the spring member 280 so that the first end of the spring member 280 forms a magnetic pole to attract or repel the gravity block 231.

[0112] In this embodiment, under the action of the electromagnetic module, the spring member 280 is equivalent to an energized coil. When current is passed through the spring member 280, the first end of the spring member 280 forms an N pole or an S pole. And the electromagnetic module can switch the magnetic pole of the first end of the spring member 280 by supplying current in different directions, thereby attracting or repelling the gravity block 231.

[0113] Optionally, when the independent plate 230 maintains the first position, the electromagnetic module supplies a forward current to the spring member 280, and the magnetic pole formed at the first end of the spring member 280 is opposite to the magnetic pole of the gravity block 231. At this time, the spring member 280 and the gravity block 231 attract each other. In this way, when the flow rate of the refrigerant in the first flow direction is unstable, the jitter of the independent plate 230 in the first position can be effectively reduced, thereby maintaining stability and reducing abnormal noise. When the independent plate 230 flips from the first position to the second position, the electromagnetic module supplies a reverse current to the spring member 280, and the magnetic pole formed at the first end of the spring member 280 is the same as the magnetic pole of the gravity block 231. At this time, the spring member 280 and the gravity block 231 repel each other. In this way, the gravity block 231 is acted upon by the magnetic force and drives the independent plate 230 to flip to the second position, thereby ensuring the reliability of the one-way valve assembly.

[0114] Alternatively, if Fig.16 and Fig.17 As shown, the rotating shaft 240 is provided with a limiting column 255, and the limiting column 255 is used to limit the independent plate 230 from continuing to flip toward the second chamber 112 after flipping to the first position.

[0115] In this embodiment, the limiting post 255 is disposed on the side of the rotating shaft 240 facing the first chamber 111, and the limiting post 255 is located on the rotation track of the first side edge of the independent plate 230. When the independent plate 230 is flipped to the first position, the first side edge of the independent plate 230 is blocked by the limiting post 255, thereby preventing the independent plate 230 from continuing to flip toward the second chamber 112.

[0116] Alternatively, if Fig. 20 As shown, the first chamber 111 is divided into a first area and a second area by a first baffle 113 , and the first baffle 113 is vertically arranged, and a flow gap is provided at the top of the first baffle 113 .

[0117] In this embodiment, preferably, a first baffle 113 is disposed in the first chamber 111 of the first manifold 110. The first main passage 140 is connected to the first area, the first flat tube 131 is connected to the second area, and the flow port 201 is located in the first area. Fig.21 As shown in a, when the heat exchanger is used as an evaporator, the refrigerant in the first main circuit 140 enters the first area. The refrigerant in the first area has two branches: one flows to the second chamber 112 through the flow port 201, and the other flows to the second area and the first flat tube 131 in sequence through the flow gap at the top. Fig.21 As shown in FIG. 2 b, when the heat exchanger is used as a condenser, the refrigerant in the first flat tube 131 flows to the second area, the refrigerant in the second area flows to the first area through the flow gap at the top, and the refrigerant in the first area flows out of the heat exchanger through the first main line 140.

[0118] Optionally, the bottom of the first baffle 113 has a flow gap.

[0119] Alternatively, if Fig. 20 As shown, the second chamber 112 is divided into a first area and a second area by a second baffle 114, and the second baffle 114 is vertically arranged, and the top and bottom of the second baffle 114 both have flow gaps; and the flow port 201 is located in the first area; when the independent plate 230 is flipped to the first position, it is blocked by the second baffle 114, and the flow gap at the bottom of the second baffle 114 is blocked by the independent plate 230.

[0120] In this embodiment, preferably, a second baffle 114 is disposed in the second chamber 112 of the first header 110. The second flat tube 132 and the third flat tube 133 are both connected to the second region. Fig.21 As shown in FIG. 1 , when the heat exchanger is used as an evaporator, the refrigerant enters the first area from the flow port 201. Moreover, under the impact of the refrigerant, the independent plate 230 flips to the first position and blocks the flow gap at the bottom of the second baffle 114. The refrigerant in the first area flows to the second area through the flow gap at the top of the second baffle 114. The refrigerant in the second area flows to the second flat tube 132 and the third flat tube 133. Fig.21 As shown in FIG. 2 b, when the heat exchanger is used as a condenser, the independent plate 230 flips to the second position under the impact of the refrigerant, at which time the flow port 201 is blocked and the flow gap at the bottom of the second baffle 114 is open. The refrigerant in the third flat tube 133 flows to the second area, and then part of the refrigerant flows from the top flow gap to the first area, and continues to flow from the bottom flow gap to the second flat tube 132. In this way, by arranging the first baffle 113 and the second baffle 114 in the header assembly 100, the flow path of the refrigerant is further optimized, thereby improving the energy efficiency of the heat exchanger.

[0121] Optionally, the heat exchanger provided in the embodiment of the present disclosure may be used as a heat exchange unit, and a complete heat exchange system may include a plurality of such heat exchange units arranged in parallel or in series.

[0122] The embodiment of the present disclosure provides an air conditioner, including the heat exchanger described in any of the above embodiments. Fig.18 The heat exchanger shown in the figure adopts a valve plate structure composed of a first plate 210 and a second plate 220. Fig. 20 The heat exchanger shown adopts a valve plate structure composed of independent plates 230.

[0123] It is understandable that in order to make the heat exchanger suitable for different types of air conditioners, the present application does not limit the specific appearance of the heat exchanger.

[0124] The above description and the accompanying drawings sufficiently illustrate the embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Unless explicitly required, individual components and functions are optional, and the order of operations may vary. Portions and features of some embodiments may be included in or replace portions and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A heat exchanger, characterized in that: include: A header assembly (100), wherein the refrigerant can flow in a first direction or in a second direction opposite to the first direction in the header assembly (100); The one-way valve assembly is arranged in the manifold assembly (100), and includes a valve plate structure; the valve plate structure is movably arranged, and when the refrigerant flows in a first direction, the valve plate structure moves to a first position to avoid the flow of the refrigerant; when the refrigerant flows in a second direction, the valve plate structure moves to a second position to block the flow of the refrigerant.

2. The heat exchanger according to claim 1, characterized in that: The valve plate structure includes: A valve seat (200) divides the manifold assembly (100) into a first chamber (111) and a second chamber (112), and is provided with a flow port (201); The valve plate is disposed in the second chamber (112) and is pivotally connected to the valve seat (200) via a rotating shaft (240); and the valve plate avoids the flow opening (201) when pivoting to a first position, and blocks the flow opening (201) when pivoting to a second position; The first direction is the flow of the refrigerant from the first chamber (111) to the second chamber (112).

3. The heat exchanger according to claim 2, characterized in that the valve plate include: A first plate (210), a first side of which is pivotally connected to the rotating shaft (240); A second plate (220), a first side of which is pivotally connected to the rotating shaft (240); wherein the plate surfaces of the first plate (210) and the second plate (220) correspond to each other and can be turned over relative to each other; Furthermore, when the refrigerant flows in a first direction to impact the valve plate, the first plate (210) and the second plate (220) flip to form an angle toward the second chamber (112) to serve as the first position; when the refrigerant flows in a second direction to impact the valve plate, the first plate (210) and the second plate (220) flip to become parallel to each other and are both blocked by the valve seat (200) to serve as the second position.

4. The heat exchanger according to claim 3, characterized in that: When the valve plate is located at the first position, the angle between the first plate (210) and the second plate (220) is greater than or equal to 20°.

5. The heat exchanger according to claim 3, characterized in that: The one-way valve assembly also includes: The limiting structure (250) is used to limit the valve plate from continuing to flip toward the second chamber (112) when the valve plate flips to the first position.

6. The heat exchanger according to claim 5, characterized in that The limiting structure (250) comprises: A first limiting rod (251) corresponds to the first plate (210), and is blocked by the first limiting rod (251) when the first plate (210) is flipped to the first position; The second limiting rod (252) corresponds to the second plate (220), and is blocked by the second limiting rod (252) when the second plate (220) is flipped to the first position.

7. The heat exchanger according to claim 6, characterized in that The first limiting rod (251) can form magnetic attraction with the first plate (210); and / or, The second limiting rod (252) can form magnetic attraction with the second plate (220).

8. The heat exchanger according to claim 5, characterized in that The limiting structure (250) comprises: The third limiting rod (253) corresponds to the first plate (210) and the second plate (220) at the same time, and the first plate (210) and the second plate (220) are simultaneously blocked by the third limiting rod (253) when they are flipped to the first position.

9. The heat exchanger according to claim 5, characterized in that The limiting structure (250) comprises: The limit block is arranged on the side of the rotating shaft (240) facing the second chamber (112) and is located between the first plate (210) and the second plate (220).

10. The heat exchanger according to claim 3, characterized in that The one-way valve assembly also includes: The first anti-shake structure (260) is used to keep the valve plate stable at the first position.

11. The heat exchanger according to claim 10, characterized in that The first anti-shake structure (260) comprises: A first stopper (261) is disposed on a plate surface of the first plate (210) located on the second chamber (112); A second stopper (262) is disposed on a plate surface of the second plate (220) located in the second chamber (112) and corresponds to the first stopper (261); The first stopper (261) can form magnetic attraction with the second stopper (262), and / or the first plate (210) can form magnetic attraction with the second plate (220).

12. The heat exchanger according to claim 11, characterized in that The cross-sections of the first stopper (261) and the second stopper (262) are both triangular in shape, and one of the sharp corners of the first stopper (261) and the second stopper (262) are adjacently arranged at the rotating shaft (240); or, The cross sections of the first stopper (261) and the second stopper (262) are both constructed to be rectangular, and both are arranged away from the rotating shaft (240) and correspond to each other.

13. The heat exchanger according to claim 3, characterized in that The one-way valve assembly also includes: The second anti-shake structure (270) is used to keep the valve plate stable at the second position.

14. The heat exchanger according to claim 13, characterized in that The second anti-shake structure (270) comprises: A third stopper (271) is disposed on the first plate (210) and corresponds to the valve seat (200); a fourth stopper (272), disposed on the second plate (220) and corresponding to the valve seat (200); The third stopper (271) can form a magnetic attraction with the valve seat (200), and / or the fourth stopper (272) can form a magnetic attraction with the valve seat (200).

15. The heat exchanger according to any one of claims 2 to 14, characterized in that: The header assembly (100) comprises: A first header (110), wherein a valve plate structure is provided inside the header, and wherein a first chamber (111) thereof is connected to a first main pipeline (140); A second header (120), wherein a valve plate structure is provided inside the header, and wherein the second chamber (112) thereof is connected to a second main pipeline (150); The heat exchanger further comprises a flat tube assembly (130), wherein the flat tube assembly (130) comprises: A first flat tube (131), a first end of which is connected to the first chamber (111) of the first header (110), and a second end of which is connected to the first chamber (111) of the second header (120); A second flat tube (132), a first end of which is connected to the second chamber (112) of the first header (110), and a second end of which is connected to the first chamber (111) of the second header (120); The third flat tube (133) has a first end connected to the second chamber (112) of the first header (110), and a second end connected to the second chamber (112) of the second header (120).

16. The heat exchanger according to claim 15, characterized in that When the heat exchanger is used as an evaporator, the refrigerant enters from the first main line (140) and flows out from the second main line (150), and the refrigerant in the header assembly (100) flows in a first direction; Furthermore, the valve plate structure automatically moves to the first position under the impact of the refrigerant.

17. The heat exchanger according to claim 15, characterized in that When the heat exchanger is used as a condenser, the refrigerant enters from the second main line (150) and flows out from the first main line (140), and the refrigerant in the header assembly (100) flows in a second direction; Furthermore, the valve plate structure automatically moves to the second position under the impact of the refrigerant.

18. An air conditioner, characterized in that: Comprising the heat exchanger according to any one of claims 1 to 17.

Images