Heat exchange device and wind driven generator

Abstract

The heat exchange device comprises a rotating shaft, a bearing and a condenser, the rotating shaft is sleeved with the bearing, the condenser is connected to one end of the rotating shaft and comprises a condensation pipe, a shell, an air inlet strip and an air outlet strip, the shell is provided with an air cooling cavity, and the condensation pipe communicates with an evaporation cavity of the rotating shaft; the two ends, in the axial direction of the condenser, of the air cooling cavity are provided with an air inlet and an air outlet correspondingly, the air inlet strip is arranged at the air inlet and protrudes out of the air inlet in the axial direction of the condenser, and the end, protruding out of the air inlet, of the air inlet strip is obliquely arranged towards the side close to the rotating direction of the condenser. The air outlet strip is arranged at the air outlet and protrudes out of the air outlet in the axial direction of the condenser, and the end, protruding out of the air outlet, of the air outlet strip is obliquely arranged towards the side away from the rotating direction of the condenser. According to the heat exchange device and the wind driven generator provided by the invention, the problem that the air outlet amount of the fan is difficult to adaptively adjust aiming at heat generated at the bearing is solved.

Description

Technical Field

[0001] The present application relates to the technical field of heat dissipation of wind turbines, and particularly to a heat exchange device and a wind turbine. Background Art

[0002] In a wind turbine, the rated speed of a doubly-fed induction generator whose speed is changed by a gearbox is usually as high as 1800 rpm. Due to continuous high-speed rolling friction at the bearing on the outer peripheral side of the rotating shaft of the doubly-fed induction generator, a large amount of heat is easily generated. If heat cannot be dissipated in time, it will cause wear, and even generate iron filings, which will cause a fire and burn out over time.

[0003] In order to dissipate heat in time, in the prior art, a position on the rotating shaft where the bearing is sleeved is hollowed out to form a heat pipe heat dissipation structure. A working medium is arranged inside the hollowed rotating shaft, and a fan is arranged on one side of the rotating shaft to dissipate heat from the condensing part of the heat pipe heat dissipation structure.

[0004] In this way, although the heat dissipation capacity of the rotating shaft can be effectively improved, the air volume output by the fan is difficult to be adaptively adjusted according to the heat generated at the bearing, and thus an effective balance cannot be achieved between the heat dissipation requirement of the bearing and the system power consumption of the wind turbine. Summary of the Utility Model

[0005] Based on this, it is necessary to provide a heat exchange device and a wind turbine to solve the problem that the air volume output by the fan is difficult to be adaptively adjusted according to the heat generated at the bearing.

[0006] The heat exchange device provided by the present application includes a rotating shaft, a bearing, and a condenser. The bearing is sleeved on the outer peripheral side of the rotating shaft. The condenser is connected to one end of the rotating shaft and is coaxially arranged with the rotating shaft. The condenser includes a condensing pipe, a housing, an air inlet strip, and an air outlet strip. The housing is provided with an air-cooling cavity. The condensing pipe is arranged in the air-cooling cavity and is respectively communicated with the evaporation cavity of the rotating shaft. An air inlet is arranged at one end of the air-cooling cavity along the axial direction of the condenser, and an air outlet is arranged at the other end. The air inlet strip is arranged at the air inlet and extends along the radial direction of the condenser. A plurality of air inlet strips are distributed around the axis of the condenser. The air inlet strip protrudes from the air inlet along the axial direction of the condenser. One end of the air inlet strip protruding from the air inlet is inclined towards the side close to the rotating direction of the condenser. The air outlet strip is arranged at the air outlet and extends along the radial direction of the condenser. A plurality of air outlet strips are distributed around the axis of the condenser. The air outlet strip protrudes from the air outlet along the axial direction of the condenser. One end of the air outlet strip protruding from the air outlet is inclined towards the side away from the rotating direction of the condenser.

[0007] In one embodiment, the air inlet strip and the air outlet strip are rotationally symmetrically arranged.

[0008] In one embodiment, along the direction from the axis of the condenser to the outer peripheral side of the condenser, the length of the air inlet strip protruding from the air inlet shows an increasing trend.

[0009] In one embodiment, along the direction from the condenser axis to the outer peripheral side of the condenser, the length by which the air inlet strip protrudes from the air inlet decreases.

[0010] In one embodiment, a plurality of condensing tubes are uniformly arranged around the axis of the rotating shaft. One end of the condensing tube communicates with the evaporation chamber, and the other end extends radially outward along the condenser.

[0011] In one embodiment, the condensing tube is flat tubular, and the central plate surface of the condensing tube and the axis of the condenser are coplanar.

[0012] In one embodiment, the air inlet strip is connected to one axial end of the condensing tube, and the air outlet strip is connected to the other axial end of the condensing tube.

[0013] In one embodiment, the air inlet strip and the air outlet strip are connected to both ends of the housing.

[0014] In one embodiment, one end of the air inlet strip close to the condensing tube extends parallel to the axis of the condenser, and the other end of the air inlet strip away from the condensing tube is inclined toward the side close to the rotation direction of the condenser.

[0015] In one embodiment, the air inlet strip is inclined from the end connected to the condensing tube to the end away from the condensing tube toward the side close to the rotation direction of the condenser.

[0016] In one embodiment, one end of the air outlet strip close to the condensing tube extends parallel to the axis of the condenser, and the other end of the air outlet strip away from the condensing tube is inclined toward the side away from the rotation direction of the condenser.

[0017] In one embodiment, the air outlet strip is inclined from the end connected to the condensing tube to the end away from the condensing tube toward the side away from the rotation direction of the condenser.

[0018] In one embodiment, adjacent condensing tubes are spaced apart to form a heat dissipation gap, and the housing surrounds the outer peripheral side of the heat dissipation gap away from the condenser axis.

[0019] The present application also provides a wind turbine, which includes the heat exchange device described in any one of the above embodiments.

[0020] Compared with the prior art, for the heat exchange device and the wind turbine provided by the present application, with such an arrangement, when the condenser rotates with the rotating shaft, the gas in front of the air outlet strip will be quickly compressed to form a high-pressure area, and under the guiding action of the air outlet strip, the high-pressure gas can quickly enter the external atmosphere.

[0021] Through the air inlet function of the air inlet strip and the air outlet function of the air outlet strip, the gas can sequentially pass through the air inlet, the air-cooled chamber, and the air outlet to form an air flow channel for cooling the condensing tube.

[0022] As can be seen from the above, since the condenser is connected to the rotating shaft and is coaxially arranged with the rotating shaft, the condenser and the rotating shaft rotate synchronously. When the rotating speed of the rotating shaft is high, the heat generated at the bearing is also large. At this time, the rotating speed of the condenser is also faster, and the gas flow rate generated in the gas flow channel inside the condenser is also faster. In this way, the heat dissipation rate of the condenser tube in the air-cooled cavity can be greatly accelerated, thereby accelerating the dissipation of the heat of the bearing.

[0023] Similarly, when the rotating speed of the rotating shaft is low, the heat generated at the bearing is also small. At this time, the rotating speed of the condenser is also slower. In this way, the system power consumption of the heat exchange device can be effectively reduced.

[0024] In summary, the heat exchange device provided by the present application can adaptively adjust the heat generated at the bearing, so that the heat dissipation requirement of the bearing and the system power consumption of the wind turbine can achieve an effective balance.

[0025] Furthermore, by canceling the fan, not only the axial length of the entire heat exchange device is shortened, but also the volume of the heat exchange device is greatly reduced, which is beneficial to the installation of the heat exchange device and the wind turbine.

[0026] Furthermore, since the cooling air flow of the air flow channel is generated by the self-rotation of the condenser, compared with the need for separate power supply for the fan, such a setting can effectively reduce the system power consumption of the heat exchange device and the wind turbine. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0028] Figure 1 is a schematic structural diagram of a heat exchange device according to an embodiment provided by the present application;

[0029] Figure 2 is Figure 1 a cross-sectional view of the heat exchange device shown;

[0030] Figure 3 is a schematic structural diagram of a heat exchange device according to another embodiment provided by the present application;

[0031] Figure 4 is a schematic diagram of the operating state of a heat exchange device according to an embodiment provided by the present application;

[0032] Figure 5 is a schematic diagram of the operating state of a heat exchange device according to another embodiment provided by the present application.

[0033] Reference numerals: 100, rotating shaft; 200, bearing; 300, condenser; 310, condensing tube; 320, housing; 330, air-cooling chamber; 331, air inlet; 332, air outlet; 340, heat dissipation gap; 350, air inlet strip; 360, air outlet strip; 370, fin; 400, connecting section; 500, flange structure. Detailed implementation manners

[0034] In a wind turbine, the rated speed of a doubly-fed induction generator whose speed is changed by a gearbox is usually as high as 1800 rpm. Due to continuous high-speed rolling friction at the bearing on the outer peripheral side of the rotating shaft of the doubly-fed induction generator, a large amount of heat is easily generated. If the heat cannot be dissipated in time, wear will occur, and even iron filings will be generated. After a long time, it will cause a fire and burn out.

[0035] In order to dissipate heat in time, in the prior art, a position where the rotating shaft is sleeved with a bearing is hollowed out to form a heat pipe heat dissipation structure. A working medium is arranged inside the hollowed rotating shaft. And a fan is arranged on one side of the rotating shaft to dissipate heat from the condensing part of the heat pipe heat dissipation structure.

[0036] In this way, although the heat dissipation capacity of the rotating shaft can be effectively improved, the air volume output of the fan is difficult to adaptively adjust to the heat generated at the bearing, thereby making it impossible to effectively balance the heat dissipation requirement of the bearing and the system power consumption of the wind turbine.

[0037] In order to solve the problem that the air volume output of the fan is difficult to adaptively adjust to the heat generated at the bearing, the present application provides a heat exchange device and a wind turbine.

[0038] Please refer to Figures 1-5 , the heat exchange device includes a rotating shaft 100, a bearing 200 and a condenser 300. The bearing 200 is sleeved on the outer peripheral side of the rotating shaft 100. The condenser 300 is connected to one end of the rotating shaft 100 and is coaxially arranged with the rotating shaft 100. The rotating shaft 100 is provided with an evaporation chamber (not shown in the figure) extending along its own axial direction.

[0039] The condenser 300 includes a condensing tube 310, a housing 320, an air inlet strip 350 and an air outlet strip 360. The housing 320 is provided with an air-cooling chamber 330. The condensing tube 310 is arranged in the air-cooling chamber 330 and is respectively communicated with the evaporation chamber. A liquid working medium is arranged in the evaporation chamber. When the heat generated by the bearing 200 is transferred to the evaporation chamber through the side wall of the rotating shaft 100, the liquid working medium can absorb heat and vaporize and enter each condensing tube 310. The air in the air-cooling chamber 330 can dissipate heat from the condensing tube 310, so that the gaseous working medium can release heat and liquefy in the condensing tube 310 and flow back to the evaporation chamber.

[0040] An air inlet 331 is provided at one end of the air-cooled cavity 330 along the axis of the condenser 300, and an air outlet 332 is provided at the other end, so that the air inlet 331, the air-cooled cavity 330, and the air outlet 332 are sequentially communicated to form an air flow channel.

[0041] The air inlet strips 350 are arranged at the air inlet 331 and extend along the radial direction of the condenser 300. A plurality of air inlet strips 350 are distributed around the axis of the condenser 300. The air inlet strips 350 protrude from the air inlet 331 along the axis of the condenser 300, and one end of the air inlet strip 350 protruding from the air inlet 331 is inclined towards the side close to the rotation direction of the condenser 300.

[0042] With such a setting, when the condenser 300 rotates with the rotating shaft 100, the gas in front of the air inlet strip 350 will be quickly compressed to form a high-pressure area, and under the guiding action of the air inlet strip 350, the high-pressure gas can quickly enter the air-cooled cavity 330.

[0043] In one embodiment, along the direction from the axis of the condenser 300 to the outer peripheral side of the condenser 300, the length of the air inlet strip 350 protruding from the air inlet 331 shows an increasing trend.

[0044] With such a setting, it is beneficial to make full use of the advantage that the linear velocity of the side of the air inlet strip 350 far from the axis of the condenser 300 is relatively large, improve the air intake volume of the air inlet strip 350, and at the same time, it is also beneficial to the aesthetics of the heat exchange device.

[0045] However, it is not limited to this. In another embodiment, along the direction from the axis of the condenser 300 to the outer peripheral side of the condenser 300, the length of the air inlet strip 350 protruding from the air inlet 331 shows a decreasing trend.

[0046] With such a setting, it is beneficial to keep the air intake volume of each part of the air inlet strip 350 balanced.

[0047] The air outlet strips 360 are arranged at the air outlet 332 and extend along the radial direction of the condenser 300. A plurality of air outlet strips 360 are distributed around the axis of the condenser 300. The air outlet strips 360 protrude from the air outlet 332 along the axis of the condenser 300, and one end of the air outlet strip 360 protruding from the air outlet 332 is inclined towards the side far from the rotation direction of the condenser 300.

[0048] With such a setting, when the condenser 300 rotates with the rotating shaft 100, the gas in front of the air outlet strip 360 will be quickly compressed to form a high-pressure area, and under the guiding action of the air outlet strip 360, the high-pressure gas can quickly enter the external atmosphere.

[0049] Through the air intake function of the air intake strip 350 and the air outlet function of the air outlet strip 360, gas can pass through the air inlet 331, the air-cooling chamber 330, and the air outlet 332 in sequence to form an air flow channel for cooling the condenser tube 310.

[0050] As can be seen from the above, since the condenser 300 is connected to the rotating shaft 100 and is coaxially arranged with the rotating shaft 100, the condenser 300 and the rotating shaft 100 rotate synchronously. When the rotating speed of the rotating shaft 100 is relatively high, the heat generated at the bearing 200 is also relatively large. At this time, the rotating speed of the condenser 300 is also faster, and the gas flow rate generated in the internal air flow channel of the condenser 300 is also faster. In this way, the heat dissipation rate of the condenser tube 310 in the air-cooling chamber 330 can be greatly accelerated, thereby accelerating the dissipation of the heat of the bearing 200.

[0051] Similarly, when the rotating speed of the rotating shaft 100 is relatively low, the heat generated at the bearing 200 is also relatively small. At this time, the rotating speed of the condenser 300 is also slower. In this way, the system power consumption of the heat exchange device can be effectively reduced.

[0052] In summary, the heat exchange device provided by the present application can adaptively adjust to the heat generated at the bearing 200, so that the heat dissipation requirement of the bearing 200 and the system power consumption of the wind turbine can achieve an effective balance.

[0053] Furthermore, by canceling the fan, not only the axial length of the entire heat exchange device is shortened, but also the volume of the heat exchange device is greatly reduced, which is beneficial to the installation of the heat exchange device and the wind turbine.

[0054] Furthermore, since the cooling air flow of the air flow channel is generated by the self-rotation of the condenser 300, compared with the fan that requires separate power supply, such a setting can effectively reduce the system power consumption of the heat exchange device and the wind turbine.

[0055] In one embodiment, the air intake strip 350 and the air outlet strip 360 are rotationally symmetrically arranged.

[0056] In this way, it is beneficial to keep the gas flow rate stable and avoid the generation of turbulent flow and noise.

[0057] However, it is not limited to this. In other embodiments, the air intake strip 350 and the air outlet strip 360 can also be mirror symmetrically or asymmetrically arranged.

[0058] In one embodiment, as Figures 1-3 shown, a plurality of condenser tubes 310 are uniformly arranged around the axis of the rotating shaft 100. One end of the condenser tube 310 close to the axis of the rotating shaft 100 is communicated with the evaporation chamber, and the other end extends radially outward along the condenser 300.

[0059] Such a setting is beneficial to improving the stability of the condenser 300 during rotation, and is also beneficial to the uniform heat dissipation of the gaseous working medium within the condenser 300.

[0060] Furthermore, in one embodiment, the condenser tube 310 is in a flat tubular shape, and the central plate surface of the condenser tube 310 and the axis of the condenser 300 are coplanar.

[0061] And it should be noted that, as Figure 4 shown, the central plate surface of the condenser tube 310 can be arranged parallel to the axis of the condenser 300. As Figure 5 shown, the central plate surface of the condenser tube 310 can also be arranged at an angle to the axis of the condenser 300. At this time, one end of the central plate surface of the condenser tube 310 close to the air inlet strip 350 is inclined towards the side close to the rotation direction of the condenser 300.

[0062] However, it is not limited to this. In another embodiment, the condenser tube 310 is in a circular tubular shape, and the axis of the condenser tube 310 and the axis of the condenser 300 are coplanar.

[0063] Of course, in other embodiments, the condenser tube 310 can also be of other shapes, such as square tubular, etc., which will not be listed one by one here. And the axis or the central plate surface of the condenser tube 310 can also not be coplanar with the axis of the condenser 300.

[0064] In one embodiment, one ends of adjacent condenser tubes 310 close to the axis of the condenser 300 are welded together to enclose a flow collecting cavity (not shown in the figure), and the flow collecting cavity communicates with the evaporation cavity and is coaxially arranged with the evaporation cavity.

[0065] In one embodiment, the rotating shaft 100 is directly welded to one side in the axial direction of the condenser tube 310.

[0066] In another embodiment, as Figure 1 and Figure 3 shown, the heat exchange device further includes a flange structure 500 and a connecting section 400. The connecting section 400 is coaxially arranged with the condenser 300 and fixedly connected. The diameter of the connecting section 400 is equal to the diameter of the rotating shaft 100 and smaller than the diameter of the condenser 300. The connecting section 400 is hermetically connected to the rotating shaft 100 through the flange structure 500.

[0067] However, it is not limited to this. In yet another embodiment, the condenser tube 310 can also be welded to the outer peripheral side of the rotating shaft 100 and communicate with the evaporation cavity through an opening (not shown in the figure) on the outer peripheral side of the rotating shaft 100, so as to improve the connection strength between the condenser tube 310 and the rotating shaft 100.

[0068] In one embodiment, the air inlet strip 350 is connected to one end in the axial direction of the condenser tube 310, and the air outlet strip 360 is connected to the other end in the axial direction of the condenser tube 310.

[0069] With such a setting, it is beneficial for the gas to enter the heat dissipation gap 340 between adjacent condenser tubes 310 through the air inlet strip 350 and finally leave the air-cooled cavity 330 through the air outlet pipe. Moreover, it is beneficial to improve the assembly strength of the air inlet strip 350 and the air outlet strip 360.

[0070] It should be noted that the respective heat dissipation gaps 340 between adjacent condenser tubes 310 together form the air-cooled cavity 330.

[0071] However, it is not limited to this. In other embodiments, the air inlet strip 350 and the air outlet strip 360 can also be connected to both ends of the housing 320.

[0072] In one embodiment, as Figure 1 shown, one end of the air inlet strip 350 close to the condenser tube 310 extends parallel to the axial direction of the condenser 300, and one end of the air inlet strip 350 far from the condenser tube 310 is inclined towards the side close to the rotation direction of the condenser 300.

[0073] That is to say, the two ends of the air inlet strip 350 are arranged at an angle.

[0074] In another embodiment, as Figure 3 shown, the air inlet strip 350 is inclined towards the side close to the rotation direction of the condenser 300 from the end connected to the condenser tube 310 to the end far from the condenser tube 310.

[0075] Specifically, the air inlet strip 350 can be a plate-shaped one with an inclined setting or a curved surface-shaped one.

[0076] In one embodiment, as Figure 1 shown, one end of the air outlet strip 360 close to the condenser tube 310 extends parallel to the axial direction of the condenser 300, and one end of the air outlet strip 360 far from the condenser tube 310 is inclined towards the side far from the rotation direction of the condenser 300.

[0077] That is to say, the two ends of the air outlet strip 360 are arranged at an angle.

[0078] In another embodiment, as Figure 3 shown, the air outlet strip 360 is inclined towards the side far from the rotation direction of the condenser 300 from the end connected to the condenser tube 310 to the end far from the condenser tube 310.

[0079] Specifically, the air outlet strip 360 can be a plate-shaped one with an inclined setting or a curved surface-shaped one.

[0080] In one embodiment, as Figure 2 shown, adjacent condenser tubes 310 are arranged at intervals to form the heat dissipation gap 340, and the housing 320 is disposed around the outer peripheral side of the heat dissipation gap 340 far from the axis of the condenser 300.

[0081] With such a setting, the flow rate of the gas passing through the heat dissipation gap 340 is increased, improving the heat dissipation effect.

[0082] Furthermore, in one embodiment, as Figures 1-3 shown, a plurality of fins 370 are arranged at intervals along the radial direction of the condenser 300 in the heat dissipation gap 340, and both ends of the fins 370 are respectively connected to the condensing pipes 310 to improve the heat dissipation effect of the heat exchange device.

[0083] This application also provides a wind turbine, which includes the heat exchange device described in any one of the above embodiments.

[0084] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0085] The above-described embodiments only represent several implementation manners of this application. Their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of this application, several modifications and improvements can still be made, and these all belong to the protection scope of this application. Therefore, the patent protection scope of this application should be subject to the appended claims.

[0086] In the description of this application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting this application.

[0087] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of this application, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0088] In this application, unless otherwise clearly stipulated or defined, terms such as "install", "connect", "link", "fix", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0089] In this application, unless otherwise clearly stipulated or defined, the first feature being "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature can be that the first feature is directly above or obliquely above the second feature, or just means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or just means that the horizontal height of the first feature is less than that of the second feature.

[0090] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be a middle element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be a middle element at the same time. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation.

[0091] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs. The terms used herein in the description of this application are only for the purpose of describing specific implementations and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

Claims

1. A heat exchange device, characterized in that: The condenser (300) comprises a rotating shaft (100), a bearing (200) and a condenser (300), wherein the bearing (200) is sleeved on the outer peripheral side of the rotating shaft (100), the condenser (300) is connected to one end of the rotating shaft (100) and is coaxially arranged with the rotating shaft (100), the condenser (300) comprises a condensation tube (310), a shell (320), an air inlet strip (350) and an air outlet strip (360), the shell (320) is provided with an air cooling chamber (330), the condensation tube (310) is arranged in the air cooling chamber (330) and is respectively connected to the evaporation chamber of the rotating shaft (100); The air cooling chamber (330) is provided with an air inlet (331) at one end along the axial direction of the condenser (300), and an air outlet (332) at the other end; the air inlet strip (350) is arranged at the air inlet (331) and extends along the radial direction of the condenser (300); a plurality of the air inlet strips (350) are distributed around the axis of the condenser (300); the air inlet strips (350) protrude from the air inlet (331) along the axial direction of the condenser (300); and one end of the air inlet strip (350) protruding from the air inlet (331) is inclined toward a side close to the rotation direction of the condenser (300); The air outlet strip (360) is arranged at the air outlet (332) and extends along the radial direction of the condenser (300), and a plurality of the air outlet strips (360) are distributed around the axis of the condenser (300). The air outlet strip (360) protrudes from the air outlet (332) along the axial direction of the condenser (300), and one end of the air outlet strip (360) protruding from the air outlet (332) is inclined toward a side away from the rotation direction of the condenser (300).

2. The heat exchange device according to claim 1, characterized in that: The air inlet strip (350) and the air outlet strip (360) are arranged in rotational symmetry.

3. The heat exchange device according to claim 1, characterized in that: Along the direction from the axis of the condenser (300) to the outer peripheral side of the condenser (300), the length of the air inlet strip (350) protruding from the air inlet (331) tends to increase; Alternatively, along the direction from the axis of the condenser (300) to the outer peripheral side of the condenser (300), the length of the air inlet strip (350) protruding from the air inlet port (331) tends to decrease.

4. The heat exchange device according to claim 1, characterized in that: The plurality of condensing tubes (310) are evenly arranged around the axis of the rotating shaft (100); one end of the condensing tube (310) is connected to the evaporation chamber, and the other end extends outward along the radial direction of the condenser (300).

5. The heat exchange device according to claim 4, characterized in that: The condenser tube (310) is in the shape of a flat tube, and the central plate surface of the condenser tube (310) and the axis of the condenser (300) are arranged coplanarly.

6. The heat exchange device according to claim 1, characterized in that: The air inlet strip (350) is connected to one axial end of the condensing tube (310), and the air outlet strip (360) is connected to the other axial end of the condensing tube (310); Alternatively, the air inlet strip (350) and the air outlet strip (360) are connected to two ends of the shell (320).

7. The heat exchange device according to claim 1, characterized in that: One end of the air inlet strip (350) close to the condenser tube (310) extends parallel to the axial direction of the condenser (300), and one end of the air inlet strip (350) away from the condenser tube (310) is inclined toward a side close to the rotation direction of the condenser (300); Alternatively, the air inlet strip (350) is tilted from an end connected to the condenser tube (310) to an end away from the condenser tube (310) toward a side close to the rotation direction of the condenser (300).

8. The heat exchange device according to claim 1, characterized in that: One end of the air outlet strip (360) close to the condensation tube (310) extends parallel to the axial direction of the condenser (300), and one end of the air outlet strip (360) away from the condensation tube (310) is inclined toward a side away from the rotation direction of the condenser (300); Alternatively, the air outlet strip (360) is tilted from an end connected to the condenser tube (310) to an end away from the condenser tube (310) toward a side away from the rotation direction of the condenser (300).

9. The heat exchange device according to claim 1, characterized in that: Adjacent condensing tubes (310) are spaced apart to form a heat dissipation gap (340), and the shell (320) is arranged around the outer peripheral side of the heat dissipation gap (340) away from the axis of the condenser (300).

10. A wind turbine generator, characterized in that: Comprising a heat exchange device as described in any one of claims 1 to claim 9.

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