Heat exchanger and air conditioner

Abstract

The invention relates to the technical field of heat exchangers, particularly provides a heat exchanger and an air conditioner, and aims to solve the problem that a heat exchanger of an existing air conditioner carries liquid in suction. Therefore, the heat exchanger comprises a barrel, a heat exchange assembly and a flow guide assembly, and an air outlet is formed in the barrel; the heat exchange assembly is installed in the barrel, the flow guide assembly is arranged between the heat exchange assembly and the air outlet, a flow guide channel is formed in the flow guide assembly, and gas-liquid two-phase refrigerants generated through the heat exchange assembly flow to the air outlet along the flow guide channel. And the flow guide assembly is arranged to separate the liquid-phase refrigerant in the process that the gas-liquid two-phase refrigerant flows to the gas outlet along the flow guide channel so as to prevent the liquid-phase refrigerant from being discharged from the gas outlet along with the gas-phase refrigerant. By means of the structural arrangement, liquid-phase refrigerants can be effectively intercepted and prevented from being discharged from the air outlet along with gas-phase refrigerants, and the problem that the heat exchanger carries liquid in air suction is effectively solved.

Description

Technical Field

[0001] The present invention relates to the technical field of heat exchangers, and particularly provides a heat exchanger and an air conditioner. Background Art

[0002] A flooded evaporator is a main component of a flooded air-conditioning unit. The structure of the existing flooded evaporator includes a cylindrical shell arranged horizontally. A heat exchange tube bundle is provided in the lower space inside the shell. A low-pressure refrigerant inlet is provided at the bottom of the shell, and this low-pressure refrigerant inlet is used to connect to the outlet of an expansion valve. A low-pressure refrigerant outlet is provided at the upper part of the shell, and this low-pressure refrigerant outlet is used to connect to the refrigerant inlet of a compressor. Its working principle is that the liquid refrigerant completely submerges the heat exchange tube bundle in the shell side, and then fully exchanges heat with the coolant in the tube side to achieve the purpose of producing cold. Due to advantages such as high heat exchange performance and stable operation, the flooded evaporator is widely used in the refrigeration and air-conditioning fields.

[0003] However, the refrigerant gas formed after the refrigerant evaporates through the heat exchange tube bundle often contains a certain amount of refrigerant liquid droplets. These refrigerant liquid droplets flow out of the low-pressure refrigerant outlet along with the refrigerant gas and enter the compressor, that is, the phenomenon of liquid carry-over during suction occurs, which will damage the compressor, affect the performance of the chiller, and reduce the service life of the compressor.

[0004] Therefore, a new technical solution is needed in this field to solve the above problems. Summary of the Invention

[0005] The present invention aims to solve the above technical problems, that is, to solve the problem of liquid carry-over during suction in the heat exchanger of the existing air conditioner.

[0006] In a first aspect, the present invention provides a heat exchanger, including:

[0007] A cylinder body, on which an air outlet is provided;

[0008] A heat exchange assembly, which is installed in the cylinder body, and

[0009] A flow guiding assembly, which is installed in the cylinder body and is arranged between the heat exchange assembly and the air outlet. The flow guiding assembly forms a flow guiding channel. The gas-liquid two-phase refrigerant generated by the heat exchange assembly flows along the flow guiding channel to the air outlet. The flow guiding assembly is configured to separate the liquid-phase refrigerant during the process of the gas-liquid two-phase refrigerant flowing along the flow guiding channel to the air outlet to prevent the liquid-phase refrigerant from being discharged from the air outlet along with the gas-phase refrigerant.

[0010] In the preferred technical solution of the above heat exchanger, the flow guiding assembly includes a plurality of horizontally arranged flow guiding plates. The plurality of flow guiding plates are spaced apart in the vertical direction and are staggered in the first horizontal direction, which is the width direction of the flow guiding plate. One of the two side edges of each flow guiding plate distributed in the first horizontal direction is connected to the inner wall of the cylinder body, and there is a gap between the other side edge and the inner wall of the cylinder body, so as to form an approximately S-shaped flow guiding channel between the plurality of flow guiding plates.

[0011] In the preferred technical solution of the above heat exchanger, the flow guiding assembly further includes a support rod, and the support rod is supported between two adjacent flow guiding plates.

[0012] In the preferred technical solution of the above heat exchanger, the support rod is supported on the side edge of the flow guiding plate away from the inner wall of the cylinder body.

[0013] In the preferred technical solution of the above heat exchanger, along the direction close to the air outlet, the width of the gap between the plurality of flow guiding plates and the inner wall of the cylinder body gradually increases.

[0014] In the preferred technical solution of the above heat exchanger, the flow guiding plate includes two sub-plate bodies distributed in the first horizontal direction, and the sub-plate bodies extend obliquely downward from the middle position of the flow guiding plate towards the edge of the flow guiding plate in the first horizontal direction.

[0015] In the preferred technical solution of the above heat exchanger, the surface of the flow guiding plate is provided with a serrated structure.

[0016] In the preferred technical solution of the above heat exchanger, a liquid inlet is formed on the cylinder body and the liquid inlet is located in the middle of the cylinder body. The heat exchange assembly includes a distributor and a heat exchange tube bundle arranged along the axial direction of the cylinder body. The distributor is arranged between the liquid inlet and the heat exchange tube bundle. A plurality of liquid outlet holes are formed on the distributor. The plurality of liquid outlet holes are arranged in rows along the length of the distributor, and the diameters of the plurality of liquid outlet holes gradually decrease along the two side directions away from the liquid inlet.

[0017] In the preferred technical solution of the above heat exchanger, the cross section of the distributor is trapezoidal or triangular, and the liquid outlet holes are located on two side surfaces of the distributor.

[0018] In a second aspect, the present invention further provides an air conditioner including the above heat exchanger.

[0019] Those skilled in the art can understand that the technical solution of the present invention provides a heat exchanger, including: a cylinder body, a heat exchange component and a flow guiding component. Among them, an air outlet is provided on the cylinder body; the heat exchange component is installed in the cylinder body, and the flow guiding component is installed in the cylinder body and is arranged between the heat exchange component and the air outlet. The flow guiding component forms a flow guiding channel, and the gas-liquid two-phase refrigerant generated by the heat exchange component flows along the flow guiding channel to the air outlet. The flow guiding component is arranged to separate the liquid-phase refrigerant during the process of the gas-liquid two-phase refrigerant flowing along the flow guiding channel to the air outlet to prevent the liquid-phase refrigerant from being discharged from the air outlet along with the gas-phase refrigerant. In the case of adopting the above technical solution, the present invention can effectively prevent the liquid-phase refrigerant from being discharged from the air outlet along with the gas-phase refrigerant, solve the problem of liquid carry-over in the evaporator during suction, and thus ensure the stable operation of the system and the refrigeration effect. Specifically, the liquid-phase refrigerant exchanges heat with the heat exchange component in the cylinder body and evaporates into a gas-liquid two-phase refrigerant. The gas-liquid two-phase refrigerant flows along the flow guiding channel to the air outlet and is discharged. When the gas-liquid two-phase refrigerant mixture passes through the flow guiding channel, the gas-liquid two-phase refrigerant impacts the flow guiding component. Due to factors such as gravity and flow velocity difference, the liquid-phase refrigerant is separated and adheres to the flow guiding component, and the gas-phase refrigerant continues to flow to the air outlet. Thus, the liquid-phase refrigerant can be effectively intercepted, preventing the liquid-phase refrigerant from being discharged from the air outlet together with the gas-phase refrigerant, and effectively solving the problem of liquid carry-over in the evaporator during suction.

[0020] Further, the flow guiding component of the present invention includes a plurality of horizontally arranged flow guiding plates. The plurality of flow guiding plates are spaced apart in the vertical direction and are staggered in the first horizontal direction. The first horizontal direction is the width direction of the flow guiding plate. One side of each of the two sides of each flow guiding plate distributed in the first horizontal direction is connected to the inner wall of the cylinder body, and there is a gap between the other side and the inner wall of the cylinder body, so as to form an approximately S-shaped flow guiding channel between the plurality of flow guiding plates. Through this structural setting, the length of the flow path of the gas-liquid two-phase refrigerant can be increased, and through multiple turns and changes in the flow direction, not only can the flow velocity of the gas-liquid two-phase refrigerant be reduced, but also the gas-liquid two-phase refrigerant can impact the flow guiding plates multiple times, increasing the contact frequency between the gas-liquid two-phase refrigerant and the flow guiding plates, and promoting the separation of the liquid-phase refrigerant. In addition, the liquid-phase refrigerant gradually deposits on the plurality of flow guiding plates. When a certain amount accumulates, the liquid-phase refrigerant will flow downward along the flow guiding channel to the heat exchange component and be evaporated and reused again. Thus, the evaporation efficiency of the evaporator and the utilization rate of the refrigerant are improved.

[0021] Furthermore, the flow guiding assembly of the present invention further includes a support rod, which is supported between two adjacent flow guiding plates. The support rod can provide structural support to ensure that the flow guiding plates maintain a stable position and shape during the flow of the gas-liquid two-phase refrigerant. Since the gas-liquid two-phase refrigerant may generate a certain impact force during the flow, the presence of the support rod can effectively prevent the flow guiding plates from deforming or shifting due to uneven force. In addition, the position of the flow guiding plates can be positioned through the support rod, ensuring the accurate position of the flow guiding plates in the cylinder body, thereby guaranteeing the flow efficiency and separation effect of the gas-liquid two-phase refrigerant in the flow guiding channel.

[0022] Furthermore, along the direction close to the air outlet, the width of the gap between the plurality of flow guiding plates and the inner wall of the cylinder body gradually increases. Through this structural arrangement, the flow rate of the gas-phase refrigerant can be gradually reduced, the resistance during the flow of the gas-phase refrigerant can be reduced, the energy loss can be reduced, and the overall efficiency of the evaporator can be improved. In addition, the separation efficiency of the liquid-phase refrigerant can be improved, and the risk of liquid carry-over in the gas-phase refrigerant can be further reduced.

[0023] Furthermore, the flow guiding plate includes two sub-plate bodies distributed along the first horizontal direction, and the sub-plate bodies extend obliquely downward from the middle position of the flow guiding plate towards the edge of the flow guiding plate along the first horizontal direction. Through this structural arrangement, the liquid-phase refrigerant on the flow guiding plate can be discharged in time, reducing the possibility of being carried away by the gas-phase refrigerant again. Moreover, the liquid-phase refrigerant on the flow guiding plate can flow back to the heat exchange assembly through the inclined surface, which is helpful for the collection and reuse of the liquid-phase refrigerant, further improving the evaporation efficiency of the evaporator and the utilization rate of the refrigerant.

[0024] Furthermore, a serrated structure is provided on the surface of the flow guiding plate. Through this structural arrangement, it can play a role in blocking the flow of the gas-liquid two-phase refrigerant and can increase the contact area between the flow guiding plate and the gas-liquid two-phase refrigerant, thereby being more helpful for the separation of the liquid-phase refrigerant and further reducing the risk of liquid carry-over in the gas-phase refrigerant.

[0025] Furthermore, a liquid inlet is provided on the cylinder body and the liquid inlet is located in the middle of the cylinder body. The heat exchange assembly includes a distributor and a heat exchange tube bundle arranged along the axial direction of the cylinder body. The distributor is arranged between the liquid inlet and the heat exchange tube bundle. A plurality of liquid outlet holes are provided on the distributor, and the plurality of liquid outlet holes are arranged in rows along the length of the distributor. And along the two side directions away from the liquid inlet, the diameters of the plurality of liquid outlet holes gradually decrease. Through this structural arrangement, the liquid-phase refrigerant can flow evenly onto the heat exchange tube bundle for evaporation and heat absorption, thereby improving the heat exchange performance of the evaporator, enhancing the evaporation capacity of the refrigerant, reducing the liquid-phase refrigerant content in the gas-phase refrigerant, and further reducing the possibility of liquid carry-over during suction in the evaporator. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings, in which:

[0027] Figure 1 It is a schematic structural view of the heat exchanger of the present invention;

[0028] Figure 2 It is a cross-sectional view of the heat exchanger of the present invention;

[0029] Figure 3 It is a schematic structural view of the flow guide plate of the present invention.

[0030] List of reference numerals:

[0031] 1. Cylinder body; 11. Gas outlet; 12. Liquid inlet;

[0032] 2. Heat exchange assembly; 21. Distributor; 22. Heat exchange tube bundle;

[0033] 31. Flow guide channel; 32. Flow guide plate; 33. Gap; 34. Support rod. Detailed implementation manners

[0034] The preferred implementation manners of the present invention will be described below with reference to the accompanying drawings. Those skilled in the art should understand that these implementation manners are only used to explain the technical principle of the present invention and are not intended to limit the protection scope of the present invention. For example, although the following implementation manners are introduced in combination with an air conditioner, the heat exchanger provided by the present invention is also applicable to other products that need to solve the problem of liquid entrainment in suction of the heat exchanger.

[0035] It should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "arranged" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0036] Based on the problem of liquid entrainment in suction existing in the flooded evaporator of the existing air conditioner pointed out in the background art. The present invention provides a heat exchanger and an air conditioner, aiming to separate the gas-liquid two-phase refrigerant by arranging a flow guide assembly to effectively solve the problem of liquid entrainment in suction of the heat exchanger.

[0037] First, refer to Figure 1 and Figure 2 , wherein, Figure 1 It is a schematic structural view of the heat exchanger of the present invention, Figure 2 It is a cross-sectional view of the heat exchanger of the present invention.

[0038] As Figure 1 and Figure 2As shown in the figure, the present invention provides a heat exchanger, comprising: a cylinder body 1, a heat exchange assembly 2 and a flow guiding assembly. Among them, an air outlet 11 is formed on the cylinder body 1; the heat exchange assembly 2 is installed in the cylinder body 1, and the flow guiding assembly is installed in the cylinder body 1 and arranged between the heat exchange assembly 2 and the air outlet 11. The flow guiding assembly forms a flow guiding channel 31. The gas-liquid two-phase refrigerant generated by the heat exchange assembly 2 flows along the flow guiding channel 31 towards the air outlet 11. The flow guiding assembly is arranged to separate the liquid-phase refrigerant during the process of the gas-liquid two-phase refrigerant flowing along the flow guiding channel 31 towards the air outlet 11, so as to prevent the liquid-phase refrigerant from being discharged from the air outlet 11 along with the gas-phase refrigerant.

[0039] After the liquid-phase refrigerant enters the cylinder body 1, it exchanges heat with the heat exchange assembly 2. The liquid refrigerant absorbs heat and evaporates to become a gas-phase refrigerant. However, due to the problem that the liquid-phase refrigerant is not completely evaporated, the gas-phase refrigerant often contains the liquid-phase refrigerant and becomes a gas-liquid two-phase refrigerant. Then the gas-liquid two-phase refrigerant rises and is discharged from the air outlet 11 and enters the compressor. However, the liquid-carrying gas-phase refrigerant is likely to cause faults in the compressor. The present invention arranges a flow guiding assembly between the heat exchange assembly 2 and the air outlet 11. The flow guiding assembly can separate the liquid-phase refrigerant in the gas-liquid two-phase refrigerant, thereby reducing the risk of the liquid-phase refrigerant entering the compressor. During the process of the liquid-phase refrigerant flowing along the flow guiding channel 31 to the air outlet 11, the gas-liquid two-phase refrigerant impacts the flow guiding assembly. Due to factors such as gravity and flow velocity difference, the liquid-phase refrigerant is separated and adheres to the flow guiding assembly, and the gas-phase refrigerant continues to flow towards the air outlet 11. Thus, the flow guiding assembly can effectively intercept the liquid-phase refrigerant and prevent the liquid-phase refrigerant from being discharged from the air outlet 11 together with the gas-phase refrigerant, solving the problem of liquid-carrying suction in the evaporator.

[0040] Preferably, as Figure 2 shown, the flow guiding assembly includes a plurality of horizontally arranged flow guiding plates 32. The plurality of flow guiding plates 32 are spaced apart in the vertical direction and arranged in a staggered manner in the first horizontal direction. The first horizontal direction is the width direction of the flow guiding plate 32. One side of each of the two sides of the flow guiding plate 32 distributed in the first horizontal direction is connected to the inner wall of the cylinder body 1, and there is a gap 33 between the other side and the inner wall of the cylinder body 1, so as to form an approximately S-shaped flow guiding channel 31 between the plurality of flow guiding plates 32.

[0041] Due to the staggered arrangement of the flow guiding plates 32 and the gap 33 between the other side of the flow guiding plates 32 and the inner wall of the cylinder body 1, an approximately S-shaped flow guiding channel 31 is formed between the multiple flow guiding plates 32. This S-shaped channel design not only increases the flow path length of the gas-liquid two-phase refrigerant, but also reduces the flow velocity of the gas-liquid two-phase refrigerant through multiple turns and changes in the flow direction. It also enables the gas-liquid two-phase refrigerant to impact the flow guiding plates 32 multiple times, increasing the contact frequency between the gas-liquid two-phase refrigerant and the flow guiding plates 32, and promoting the separation of the liquid-phase refrigerant. Exemplarily, when the gas-liquid two-phase refrigerant passes through the heat exchange assembly 2, it enters the S-shaped flow guiding channel 31 of the flow guiding assembly. During the flow process, the gas-liquid two-phase refrigerant can impact the flow guiding plates 32 multiple times. Due to the differences in gravity and flow velocity, the liquid-phase refrigerant will gradually deposit on the flow guiding plates 32, while the gas-phase refrigerant continues to flow upward along the channel. The design of the S-shaped channel enables the liquid-phase refrigerant to be continuously separated and deposited during the flow process, while the gas-phase refrigerant finally flows to the air outlet 11 through the channel, thereby effectively preventing the liquid-phase refrigerant from being discharged from the air outlet 11 along with the gas-phase refrigerant, achieving the efficient separation of the gas-liquid two-phase refrigerant, and ensuring the stable operation and refrigeration effect of the system.

[0042] Exemplarily, the number of the flow guiding plates 32 in the present invention is set to 3 to 5, thereby enabling a better separation effect on the gas-liquid two-phase refrigerant and effectively preventing the liquid-phase refrigerant from being discharged from the air outlet 11 along with the gas-phase refrigerant. Of course, in other embodiments, the number of the flow guiding plates 32 can also be set to 2, 6, 7, etc. The number of the flow guiding plates 32 can be determined according to tests or in combination with actual situations. The present invention does not make specific limitations as long as a good separation effect on the gas-liquid two-phase refrigerant can be achieved.

[0043] Preferably, as Figure 2 shown, the flow guiding assembly further includes a support rod 34, and the support rod 34 is supported between two adjacent flow guiding plates 32.

[0044] Since one side of each of the two sides of the flow guiding plate 32 distributed along the first horizontal direction is connected to the inner wall of the cylinder body 1, and there is a gap 33 between the other side and the inner wall of the cylinder body 1, the flow guiding plate 32 is a cantilever structure. During the flow process of the gas-liquid two-phase refrigerant, a certain impact force is generated on each flow guiding plate 32, resulting in the flow guiding plate 32 being prone to deformation or displacement. Therefore, in the present invention, a support rod 34 is arranged between two adjacent flow guiding plates 32 to provide structural support, ensuring that the flow guiding plate 32 maintains a stable position and shape during the flow process of the gas-liquid two-phase refrigerant, thereby maintaining the stability and effectiveness of the flow guiding channel 31. In addition, the position of the flow guiding plate 32 can also be positioned through the support rod 34, and the distance between two adjacent flow guiding plates 32 can be controlled through the support rod 34, ensuring the accurate position of the flow guiding plate 32 in the cylinder body 1, thereby ensuring the flow efficiency and separation effect of the gas-liquid two-phase refrigerant in the flow guiding channel 31.

[0045] Preferably, as Figure 2 shown, the support rod 34 is supported on the side of the flow guide plate 32 away from the inner wall of the cylinder body 1. The support rod 34 fixes the overhanging end (the other side of the flow guide plate 32) of each flow guide plate 32, so as to more effectively ensure that the flow guide plate 32 will not be deformed or displaced. In addition, it also makes the installation and maintenance process of the flow guide plate 32 more convenient. If it is necessary to replace or adjust the flow guide plate 32, the support rod 34 can be more easily disassembled and reinstalled.

[0046] Exemplarily, positioning holes are provided on the other side of the flow guide plate 32 in the present invention, and both ends of the support rod 34 are respectively inserted into the positioning holes of two adjacent flow guide plates 32. Through the positioning holes, it can be ensured that each flow guide plate 32 is accurately placed at a predetermined position, and a plurality of flow guide plates 32 can be connected by the support rod 34 through the positioning holes, forming a more stable overall structure. This structure can resist the impact and vibration brought by the flow of the gas-liquid two-phase refrigerant, and reduce the problem of poor separation effect of the gas-liquid two-phase refrigerant caused by structural deformation. In addition, the combination of the positioning holes and the support rod 34 makes the installation process more convenient and fast. The installer only needs to insert both ends of the support rod 34 into the corresponding positioning holes to connect a plurality of flow guide plates 32, without using additional fixing parts or tools, which is convenient for maintenance.

[0047] It should be noted that both ends of the support rod 34 can also be fixed on two adjacent flow guide plates 32 by welding to fix the position of the flow guide plate 32. The connection manner of the support rod 34 and the flow guide plate 32 is not specifically limited in the present invention, as long as the stability of the flow guide plate 32 can be ensured.

[0048] Preferably, along the direction close to the air outlet 11, the width of the gap 33 between the plurality of flow guide plates 32 and the inner wall of the cylinder body 1 gradually increases.

[0049] As the gas-liquid two-phase refrigerant flows towards the air outlet 11, the liquid-phase refrigerant gradually deposits on the flow guide plate 32 due to gravity and flow rate differences, and the gas-phase refrigerant continues to flow. The design of the gradually increasing width of the gap 33 can gradually reduce the flow rate of the gas-phase refrigerant, reduce the resistance of the gas-phase refrigerant during the flow process, and thus more easily separate the liquid-phase refrigerant from the gas-phase refrigerant. In addition, it can also reduce energy loss and improve the overall efficiency of the evaporator.

[0050] Exemplarily, the width of the gap 33 can be determined according to the required flow rate of the gaseous refrigerant. For example, in the present invention, the width of the gap 33 closest to the air outlet 11 at the uppermost part is set such that the passing flow rate of the gaseous refrigerant is greater than 0.5 m / s and less than or equal to 0.6 m / s, and the width of the gap 33 adjacent to the uppermost gap 33 is set such that the passing flow rate of the gaseous refrigerant is greater than 0.6 m / s and less than or equal to 0.8 m / s. Other gaps 33 can be adaptively adjusted according to the requirements for the passing flow rate of the gaseous refrigerant. The present invention does not specifically limit the width of the gap 33, and the specific width can be determined according to the requirements for the passing flow rate of the gaseous refrigerant or through experiments.

[0051] Preferably, as Figure 3 shown, the deflector 32 includes two sub-plate bodies distributed along the first horizontal direction, and the sub-plate bodies extend obliquely downward from the middle position of the deflector 32 towards the edge of the deflector 32 along the first horizontal direction.

[0052] During the flow of the gas-liquid two-phase refrigerant in the flow guide channel 31, the liquid-phase refrigerant will adhere to the deflector 32. In the present invention, by extending the sub-plate bodies obliquely downward from the middle position of the deflector 32 towards the edge of the deflector 32 along the first horizontal direction, the deflector 32 has a slope structure with a higher middle and lower ends, which can enable the liquid-phase refrigerant on the deflector 32 to accumulate and flow down along the slope to the heat exchange component 2. This can not only effectively drain the liquid-phase refrigerant in a timely manner and reduce the possibility of the liquid-phase refrigerant being carried away by the gas-phase refrigerant again, but also the liquid-phase refrigerant on the deflector 32 can flow back to the heat exchange component 2 through the slope surface, which helps to collect and reuse the liquid-phase refrigerant by evaporation, further improving the evaporation efficiency of the evaporator and the utilization rate of the refrigerant.

[0053] Exemplarily, the slope of the two sub-plate bodies distributed along the first horizontal direction in the present invention is 1° to 3°. In this way, the function of guiding the liquid refrigerant can be achieved, and it will not affect the flow guide channel 31, ensuring the fluidity of the gaseous refrigerant. Further, in other embodiments, the slope of the sub-plate body can also be slopes such as 4°, 5°, 6°, etc., as long as it can guide the liquid refrigerant to the heat exchange component 2 and does not affect the passing property of the gaseous refrigerant. The present invention does not specifically limit the specific slope.

[0054] Preferably, the surface of the deflector 32 is provided with a serrated structure.

[0055] The serrated structure can block the flow of the gas-liquid two-phase refrigerant and increase the contact area between the deflector 32 and the gas-liquid two-phase refrigerant, thus more effectively separating the liquid-phase refrigerant and further reducing the risk of liquid carry-over in the gas-phase refrigerant.

[0056] Preferably, as Figure 1 and Figure 2As shown, a liquid inlet 12 is provided on the cylinder body 1, and the liquid inlet 12 is located in the middle of the cylinder body 1. The heat exchange assembly 2 includes a distributor 21 and a heat exchange tube bundle 22 arranged along the axial direction of the cylinder body 1. The distributor 21 is arranged between the liquid inlet 12 and the heat exchange tube bundle 22. A plurality of liquid outlet holes are provided on the distributor 21. The plurality of liquid outlet holes are arranged in rows along the length of the distributor 21, and along the two side directions away from the liquid inlet 12, the diameters of the plurality of liquid outlet holes gradually decrease.

[0057] After the liquid refrigerant enters the distributor 21 from the liquid inlet 12, it will flow to both sides of the liquid inlet 12. Therefore, the flow rate of the part close to the liquid inlet 12 is larger, while the flow rate of the part far from the liquid inlet 12 is smaller. In the present invention, by designing the diameters of the plurality of liquid outlet holes to gradually decrease along the two side directions away from the liquid inlet 12, it can be ensured that even in places with a small flow rate, there is enough liquid refrigerant flowing out, so that the refrigerant flows out evenly along the length of the distributor 21, further maintaining the uniformity of the liquid-phase refrigerant supply of the entire heat exchange tube bundle 22, enabling the boiling height of the entire refrigerant full-liquid area to be consistent, improving the heat exchange efficiency, thereby improving the evaporation capacity of the refrigerant, reducing the liquid-phase refrigerant content in the gas-phase refrigerant, and further reducing the possibility of liquid carry-over in the evaporator.

[0058] Preferably, the cross-section of the distributor 21 is trapezoidal or triangular, and the liquid outlet holes are located on two side surfaces of the distributor 21. Through this structural setting, it helps to form a certain fluid pressure inside the distributor 21, thereby helping the liquid-phase refrigerant to be evenly distributed to each liquid outlet hole, further ensuring the uniformity of the liquid-phase refrigerant supply of the entire heat exchange tube bundle 22, improving the evaporation capacity of the liquid refrigerant, and reducing the liquid carry-over risk.

[0059] Exemplarily, the angle between the top surface and the side surface of the trapezoidal or triangular distributor 21 is 120° to 150°. When the liquid-phase refrigerant enters the distributor 21 from the liquid inlet 12, due to the angle between the top surface and the side surface being between 120° and 150°, a certain pressure distribution will be formed inside the distributor 21 for the liquid-phase refrigerant. This pressure distribution helps the liquid-phase refrigerant to flow more evenly to the liquid outlet holes on both sides, and can also reduce the resistance of the liquid-phase refrigerant inside the distributor 21, enabling the liquid-phase refrigerant to flow more smoothly. It helps to improve the overall efficiency of the evaporator. Further, through this angle setting, it can also resist a certain external pressure and vibration, ensuring the stability of the distributor 21 during long-term use.

[0060] It should be noted that in other embodiments, the distributor 21 can also be of other shapes, such as square, crescent-shaped, etc. In addition, the angle between the top surface and the side surface of the distributor 21 can also be other angles such as 100°, 110°, 160°, etc. The present invention does not specifically limit the shape of the distributor 21 and the angle between the top surface and the side surface of the distributor 21, as long as it can ensure the uniformity of the liquid-phase refrigerant flowing to the entire heat exchange tube bundle 22.

[0061] Furthermore, a heat exchange tube support plate is provided on one side of the heat exchange tube bundle 22 in the present invention close to the flow guide plate 32, and a support rod 34 is provided between the flow guide plate 32 and the heat exchange tube support plate, so that the flow guide plate 32 close to the heat exchange tube bundle 22 is supported on the heat exchange tube support plate through the support rod 34, thereby ensuring that the flow guide plate 32 close to the heat exchange tube bundle 22 maintains a stable position and shape during the flow of the gas-liquid two-phase refrigerant.

[0062] In addition, the present invention also provides an air conditioner, and the air conditioner includes the above-mentioned heat exchanger.

[0063] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A heat exchanger, characterized in that, Comprising: A cylinder body (1) with an air outlet (11) formed thereon; A heat exchange assembly (2) installed in the cylinder body (1), and A flow guiding assembly installed in the cylinder body (1) and disposed between the heat exchange assembly (2) and the air outlet (11). The flow guiding assembly forms a flow guiding channel (31). The gas-liquid two-phase refrigerant generated by the heat exchange assembly (2) flows along the flow guiding channel (31) towards the air outlet (11). The flow guiding assembly is configured to separate the liquid-phase refrigerant during the process of the gas-liquid two-phase refrigerant flowing along the flow guiding channel (31) towards the air outlet (11) to prevent the liquid-phase refrigerant from being discharged from the air outlet (11) along with the gas-phase refrigerant.

2. The heat exchanger according to claim 1, characterized in that, The flow guiding assembly includes a plurality of horizontally arranged flow guiding plates (32). The plurality of flow guiding plates (32) are spaced apart in the vertical direction and are arranged in a staggered manner in a first horizontal direction. The first horizontal direction is the width direction of the flow guiding plate (32). One of the two side edges of each flow guiding plate (32) distributed in the first horizontal direction is connected to the inner wall of the cylinder body (1), and there is a gap (33) between the other side edge and the inner wall of the cylinder body (1), so as to form an approximately S-shaped flow guiding channel (31) between the plurality of flow guiding plates (32).

3. The heat exchanger according to claim 2, characterized in that, The flow guiding assembly further includes a support rod (34) which is supported between two adjacent flow guiding plates (32).

4. The heat exchanger according to claim 3, characterized in that, The support rod (34) is supported on the side edge of the flow guiding plate (32) away from the inner wall of the cylinder body (1).

5. The heat exchanger according to claim 2, characterized in that, Along the direction approaching the air outlet (11), the width of the gap (33) between the plurality of flow guiding plates (32) and the inner wall of the cylinder body (1) gradually increases.

6. The heat exchanger according to claim 2, characterized in that The flow guiding plate (32) includes two sub-plate bodies distributed in the first horizontal direction. The sub-plate body extends obliquely downward from the middle position of the flow guiding plate (32) towards the edge of the flow guiding plate (32) in the first horizontal direction.

7. The heat exchanger according to claim 2, wherein The surface of the flow guiding plate (32) is provided with a serrated structure.

8. The heat exchanger according to any one of claims 1 to 7, characterized in that, The cylinder body (1) is provided with a liquid inlet (12) which is located in the middle of the cylinder body (1). The heat exchange assembly (2) includes a distributor (21) and a heat exchange tube bundle (22) arranged along the axial direction of the cylinder body (1). The distributor (21) is disposed between the liquid inlet (12) and the heat exchange tube bundle (22). A plurality of liquid outlet holes are formed in the distributor (21). The plurality of liquid outlet holes are arranged in rows along the length of the distributor (21), and the aperture of the plurality of liquid outlet holes gradually decreases along the two side directions away from the liquid inlet (12).

9. The heat exchanger according to claim 8, wherein, The cross section of the distributor (21) is trapezoidal or triangular, and the liquid outlet holes are located on two side surfaces of the distributor (21).

10. An air conditioner, characterized in that, An exchanger comprising any one of claims 1 to 9.

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