Heat dissipation mechanism, heat exchanger and automobile

Abstract

The utility model provides a heat dissipation mechanism, a heat exchanger and an automobile. The heat dissipation mechanism comprises a shell, a memory metal strip and a heat dissipation assembly. The first end of the memory metal strip is connected with the inner wall of the shell, the second end of the memory metal strip is connected with the heat dissipation assembly, and at least part of the heat dissipation assembly is located outside the shell; the memory metal strip is used for adjusting the position of the heat dissipation assembly according to the environment temperature. According to the utility model, the memory metal strip can perform different deformations according to the actually measured environment temperature, so that the position of the heat dissipation assembly connected with the memory metal strip can be adjusted, thereby adjusting the working state of the heat dissipation mechanism, providing accurate temperature to control the heat dissipation efficiency, and ensuring that the heat dissipation effect meets the use requirements.

Description

Technical Field

[0001] The utility model relates to the technical field of heat dissipation mechanisms, in particular to a heat dissipation mechanism, a heat exchanger and a car. Background Art

[0002] At present, many devices generate heat when in use. Overheating of the device will cause damage to the device and affect the use of the device. In order to ensure the safe use of the device, a heat dissipation mechanism is required to dissipate heat from the heat dissipation parts of the device. However, most existing heat dissipation mechanisms cannot accurately control the working state of the heat dissipation mechanism, resulting in the heat dissipation effect failing to meet the use requirements. For example, when a heat dissipation mechanism is used in a car, when the car is just started, due to the excessive heat dissipation effect of the heat dissipation mechanism, the transmission oil is in a low temperature state and the viscosity is too high, which makes it difficult to start the car and increases fuel consumption. Utility Model Content

[0003] The utility model provides a heat dissipation mechanism, a heat exchanger and a car, so as to solve the problem that most of the existing heat dissipation mechanisms cannot accurately control the working state of the heat dissipation mechanism, resulting in the heat dissipation effect failing to meet the use requirements.

[0004] A heat dissipation mechanism comprises a shell, a memory metal strip and a heat dissipation component;

[0005] The first end of the memory metal strip is connected to the inner wall of the shell, the second end of the memory metal strip is connected to the heat dissipation component, and at least a part of the heat dissipation component is located outside the shell;

[0006] The memory metal strip is used to adjust the position of the heat dissipation component according to the ambient temperature.

[0007] Preferably, the heat dissipation mechanism further includes an elastic member;

[0008] The first end of the elastic member is connected to the inner wall of the shell, and the second end of the elastic member is connected to the second end of the memory metal strip.

[0009] Preferably, the heat dissipation mechanism further includes a transmission assembly;

[0010] The first end of the transmission component is connected to the second end of the memory metal strip, and the second end of the transmission component is connected to the heat dissipation component.

[0011] Preferably, the transmission assembly comprises a transmission plate, a first rotating shaft and a second rotating shaft;

[0012] The first end of the transmission plate is connected to the second end of the memory metal strip via a first rotating shaft;

[0013] The second rotating shaft is fixedly mounted on the housing, the second end of the transmission plate rotates around the second rotating shaft, and the heat dissipation component is connected to the second end of the transmission plate;

[0014] Alternatively, the second rotating shaft is rotatably mounted on the housing, the second end of the transmission plate is fixedly connected to the second rotating shaft, and the heat dissipation assembly is connected to the second rotating shaft.

[0015] Preferably, the heat dissipation assembly includes a plurality of fins, and the plurality of fins are evenly distributed along the axial direction of the second rotating shaft.

[0016] Preferably, the fin comprises a strip-shaped connecting portion and an arc-shaped heat dissipating portion extending from one end of the strip-shaped connecting portion;

[0017] The other end of the strip-shaped connecting portion is connected to the second end of the memory metal strip, and the arc-shaped heat dissipation portion is used to at least partially overlap with the heat dissipation component.

[0018] Preferably, the heat dissipation mechanism comprises two memory metal strips, and the two memory metal strips are mirror-arranged based on the center line of the shell.

[0019] Preferably, the housing comprises a bottom plate, a top plate and four wall plates;

[0020] The bottom plate is arranged opposite to the top plate and connected to each other through the four wall plates;

[0021] An opening is provided at the junction of the top plate and the wall plate, the first end of the memory metal strip is connected to the portion of the top plate close to the opening, and the second end of the memory metal strip is connected to the heat dissipation component arranged at the opening.

[0022] A heat exchanger, characterized in that it comprises a mounting frame, a water exchanger, a refrigerant exchanger and the heat dissipation mechanism;

[0023] The water exchanger and the refrigerant exchanger are arranged on opposite sides of the mounting frame along the first direction, the water exchanger is provided with a first heat dissipation fin, and the refrigerant exchanger is provided with a second heat dissipation fin;

[0024] The heat dissipation mechanism is arranged on one side of the mounting frame perpendicular to the first direction; the heat dissipation component and the first heat dissipation fin are at least partially overlapped, and the heat dissipation component and the second heat dissipation fin are at least partially overlapped.

[0025] Preferably, the heat exchanger further comprises a module bracket, the mounting frame is fixed on the module bracket, and the module bracket is used to be mounted on the first workpiece.

[0026] Preferably, the heat exchanger further comprises a heat conducting plate and a heat diffusion plate;

[0027] The heat conducting plate is arranged on the mounting frame, and the heat spreader is mounted on the heat conducting plate and contacts the heat dissipation assembly.

[0028] A car comprises the heat exchanger.

[0029] The heat dissipation mechanism provided in the embodiment of the utility model is used for dissipating heat from a heat dissipation element, and specifically includes a shell, a memory metal strip and a heat dissipation component. During installation, the shell is used as a base, and then the first end of the memory metal strip is connected to the inner wall of the shell, and the second end of the memory metal strip is connected to the heat dissipation component, and at least part of the heat dissipation component is located outside the shell. The memory metal strip can be deformed according to different ambient temperatures. When the first end of the memory metal strip is connected to the inner wall of the shell, its second end will drive the heat dissipation component connected to it to move, so as to adjust the position of the heat dissipation component.

[0030] In this example, the material of the memory metal strip may be nickel-titanium alloy, which is a typical shape memory alloy and has the property of automatically changing shape at different temperatures. That is to say, the memory metal strip may undergo different deformations according to the actually measured ambient temperature, so that the heat dissipation component connected to it can be adjusted in position, thereby adjusting the working state of the heat dissipation mechanism, providing precise temperature control of heat dissipation efficiency, and ensuring that the heat dissipation effect meets the use requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments of the utility model will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0032] Figure 1 This is a cross-sectional view of a heat dissipation mechanism in an embodiment of the utility model.

[0033] Figure 2 It is an isometric view of a heat dissipation mechanism in one embodiment of the utility model;

[0034] Figure 3 It is an axial view of a heat exchanger in one embodiment of the utility model.

[0035] Among them, 1. shell; 2. memory metal strip; 3. heat dissipation component; 31. fin; 311. strip connection part; 312. arc-shaped heat dissipation part; 4. elastic member; 5. transmission component; 51. transmission plate; 52. first rotating shaft; 53. second rotating shaft; 6. mounting frame; 7. water exchanger; 8. refrigerant exchanger; 9. module bracket; 10. heat conduction plate; 11. heat spreader. DETAILED DESCRIPTION

[0036] In order to make the technical problems, technical solutions and beneficial effects solved by the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0037] In the description of the present invention, it should be understood that the terms "longitudinal", "radial", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention 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 cannot be understood as a limitation on the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0038] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] The utility model embodiment provides a heat dissipation mechanism, referring to Figure 1 and Figure 2 The heat dissipation mechanism includes a shell 1, a memory metal strip 2 and a heat dissipation component 3; the first end of the memory metal strip 2 is connected to the inner wall of the shell 1, the second end of the memory metal strip 2 is connected to the heat dissipation component 3, and at least part of the heat dissipation component 3 is located outside the shell 1; the memory metal strip 2 is used to adjust the position of the heat dissipation component 3 according to the ambient temperature.

[0040] As an example, the heat dissipation mechanism is used to dissipate heat from a heat sink, and specifically includes a shell 1, a memory metal strip 2 and a heat dissipation component 3; during installation, the shell 1 is used as a base, and then the first end of the memory metal strip 2 is connected to the inner wall of the shell 1, and the second end of the memory metal strip 2 is connected to the heat dissipation component 3, and at least part of the heat dissipation component 3 is located outside the shell 1; the memory metal strip 2 can be deformed according to different ambient temperatures, and when the first end of the memory metal strip 2 is connected to the inner wall of the shell 1, its second end will drive the heat dissipation component 3 connected thereto to move, so as to adjust the position of the heat dissipation component 3.

[0041] In this example, the material of the memory metal strip 2 can be nickel-titanium alloy, which is a typical shape memory alloy and has the property of automatically changing shape at different temperatures. That is to say, the memory metal strip 2 can undergo different deformations according to the actual measured ambient temperature, so that the heat dissipation component 3 connected to it can be adjusted in position, thereby adjusting the working state of the heat dissipation mechanism, providing precise temperature control of heat dissipation efficiency, and ensuring that the heat dissipation effect meets the use requirements.

[0042] In one example, the memory metal strip 2 includes two states, an arc state and a straight state, corresponding to different ambient temperatures, to adjust the position of the heat dissipation component 3; for example, under normal temperature conditions, the memory metal strip 2 is in an arc state, and the heat dissipation component 3 in this state has a large overlap area with the heat dissipation component to be dissipated, and the heat dissipation efficiency of the heat dissipation mechanism is low; under high temperature conditions, the memory metal strip 2 is deformed, changing from an arc state to a straight state, and the position of the heat dissipation component 3 is adjusted. In this state, the heat dissipation component 3 has a small overlap area with the heat dissipation component to be dissipated, and the heat dissipation efficiency of the heat dissipation mechanism is high.

[0043] In this example, the memory metal strip 2 of the heat dissipation mechanism can change shape at different temperatures, and can automatically adjust the working state of the heat dissipation component 3. The physical properties of the memory metal strip 2 are utilized to achieve a reliable response to temperature changes, reduce dependence on electronic control devices, and improve the overall reliability and safety of the equipment.

[0044] For example, the heat dissipation mechanism is applied to a car. When the car engine is not started, the memory metal strip 2 maintains an upwardly bent shape. Through the lever principle, the heat dissipation component 3 is driven to rotate downward, so that the overlap area between the heat dissipation component 3 and the heat dissipation part is large, so that the space inside the heat dissipation part is reduced, and the heat dissipation effect is reduced, so as to prevent the car from being difficult to start and increasing fuel consumption due to the excessive heat dissipation effect of the heat dissipation mechanism when the car is just started. When the gearbox oil is in a high temperature state after the car is started, the memory metal strip 2 itself will deform when the temperature rises, and begin to straighten from the upwardly bent shape. Through the lever principle, the heat dissipation component 3 is driven to rotate upward, so that the overlap area between the heat dissipation component 3 and the heat dissipation part is small, so that the space inside the heat dissipation part is increased, and the heat dissipation effect is improved; by utilizing the physical properties of the memory metal strip 2, a reliable response to temperature changes is achieved, the dependence on the electronic control device is reduced, the overall reliability and safety of the equipment are improved, and the possibility of failure of the car itself and the maintenance cost are reduced.

[0045] In one embodiment, referring to Figure 1 The heat dissipation mechanism also includes an elastic member 4; a first end of the elastic member 4 is connected to the inner wall of the shell 1, and a second end of the elastic member 4 is connected to the second end of the memory metal strip 2.

[0046] As an example, the heat dissipation mechanism also includes an elastic member 4. When installed, the first end of the elastic member 4 is connected to the inner wall of the shell 1, and the second end of the elastic member 4 is connected to the second end of the memory metal strip 2. The elastic force of the elastic member 4 can provide additional force support to the memory metal strip 2, so that the memory metal strip 2 remains bent upward at room temperature, and the memory metal strip 2 is deformed at high temperature, overcoming the elastic force of the elastic member 4, and changing from a bent state to a straight state; in this way, under the cooperation of the memory metal strip 2 and the elastic member 4, the position of the heat dissipation component 3 can be accurately controlled according to the real-time temperature of the heat dissipation component to be cooled, and accurate temperature control can be provided to adjust the working state of the heat dissipation mechanism to ensure that the heat dissipation effect meets the use requirements. Among them, the elastic member 4 includes but is not limited to a spring. Specifically, the elastic member 4 can be set between the memory metal strip 2 and the inner top wall of the shell 1, and under the elastic force of the elastic member 4, the second end of the memory metal strip 2 is pulled to bend upward; the elastic member 4 can also be set between the memory metal strip 2 and the inner bottom wall of the shell 1, and under the elastic force of the elastic member 4, the second end of the memory metal strip 2 is pushed to bend upward.

[0047] In one embodiment, referring to Figure 1 The heat dissipation mechanism also includes a transmission component 5; the first end of the transmission component 5 is connected to the second end of the memory metal strip 2, and the second end of the transmission component 5 is connected to the heat dissipation component 3.

[0048] As an example, the heat dissipation mechanism also includes a transmission component 5; during installation, the first end of the transmission component 5 is connected to the second end of the memory metal strip 2, and the second end of the transmission component 5 is connected to the heat dissipation component 3. The memory metal strip 2, the transmission component 5 and the shell 1 cooperate to form a lever component with the shell 1 as the fulcrum. Using the lever principle, the memory metal strip 2 can be deformed according to the ambient temperature, and can drive the transmission component 5 to move to adjust the position of the heat dissipation component 3, thereby achieving the heat dissipation effect of adjusting the heat dissipation mechanism.

[0049] In one embodiment, referring to Figure 1 The transmission assembly 5 includes a transmission plate 51, a first rotating shaft 52 and a second rotating shaft 53; the first end of the transmission plate 51 is connected to the second end of the memory metal strip 2 through the first rotating shaft 52; the second rotating shaft 53 is fixedly mounted on the shell 1, the second end of the transmission plate 51 rotates around the second rotating shaft 53, and the heat dissipation assembly 3 is connected to the second end of the transmission plate 51; or, the second rotating shaft 53 can be rotatably mounted on the shell 1, the second end of the transmission plate 51 is fixedly connected to the second rotating shaft 53, and the heat dissipation assembly 3 is connected to the second rotating shaft 53.

[0050] As an example, the transmission assembly 5 includes a transmission plate 51, a first rotating shaft 52 and a second rotating shaft 53; during installation, the first end of the transmission plate 51 is rotatably mounted on the second end of the memory metal strip 2 through the first rotating shaft 52, and the second rotating shaft 53 is fixedly mounted on the shell 1, and the second end of the transmission plate 51 rotates around the second rotating shaft 53, and the heat dissipation assembly 3 is connected to the second end of the transmission plate 51; the transmission plate 51, the first rotating shaft 52 and the second rotating shaft 53 are arranged in this way to cooperate to form a lever assembly, and by utilizing the lever principle, the memory metal strip 2 is deformed, which can drive the transmission plate 51 to rotate around the second rotating shaft 53, thereby driving the heat dissipation assembly 3 to move to adjust the heat dissipation effect of the heat dissipation mechanism.

[0051] In one example, the second shaft 53 is rotatably mounted on the housing 1, the second end of the transmission plate 51 is fixedly connected to the second shaft 53 and can rotate around the middle axis where the second shaft 53 is located, and the heat dissipation component 3 is mounted on the second shaft 53, which can also achieve the above functions.

[0052] In addition, a mounting ring can be fixedly connected to one end of the memory metal strip 2, and the first end of the transmission plate 51 can be rotatably mounted in the mounting ring through the first rotating shaft 52. The movement of the memory metal strip 2 can be more flexibly transmitted to the transmission plate 51, allowing the slight deformation of the memory metal strip 2 to be amplified through a series of mechanical structures, thereby effectively driving the second rotating shaft 53 and the heat dissipation component 3 connected thereto. The transmission plate 51 serves as a transmission component of the second rotating shaft 53, which can ensure that the movement of the memory metal strip 2 is converted into the rotation of the second rotating shaft 53. More complex motion control can be achieved through a simple shape memory metal strip 2, thereby reducing the risk of failure of complex mechanical components and improving the durability and service life of the entire heat dissipation mechanism.

[0053] In one embodiment, referring to Figure 1 and Figure 2 The heat dissipation assembly 3 includes a plurality of fins 31 , and the plurality of fins 31 are evenly distributed along the axial direction of the second rotating shaft 53 .

[0054] As an example, the heat dissipation assembly 3 includes a plurality of fins 31, and the plurality of fins 31 are arranged in two groups. The fins 31 in each group of fins 31 are evenly distributed along the axial direction of the second rotating shaft 53, which significantly increases the surface area in contact with the air, and helps to improve the heat dissipation efficiency. The larger surface area can dissipate heat faster and more effectively, and helps to evenly disperse heat and avoid local overheating. It is also beneficial to balance the mechanical load of the entire system and reduce wear or damage caused by uneven load. The fins 31 in each group of fins 31 can be evenly distributed on the second rotating shaft 53 along the axial direction of the second rotating shaft 53; or they can be evenly distributed on the second end of the transmission plate 51 along the axial direction of the second rotating shaft 53.

[0055] In one embodiment, referring to Figure 1The fin 31 includes a strip-shaped connecting portion 311 and an arc-shaped heat dissipation portion 312 extending from one end of the strip-shaped connecting portion 311; the other end of the strip-shaped connecting portion 311 is connected to the second end of the memory metal strip 2, and the arc-shaped heat dissipation portion 312 at least partially overlaps with the heat dissipation element.

[0056] As an example, the fin 31 includes a strip-shaped connecting portion 311 and an arc-shaped heat dissipation portion 312; during installation, the other end of the strip-shaped connecting portion 311 is connected to the second end of the memory metal strip 2, and can be fixed on the second rotating shaft 53 or on the second end of the transmission plate 51; the arc-shaped heat dissipation portion 312 extends from one end of the strip-shaped connecting portion 311, and the arc-shaped heat dissipation portion 312 is used to overlap at least partially with the heat dissipation component to be cooled; the fin 31 is a key component for heat dissipation, and the arc-shaped heat dissipation portion 312 increases the surface area in contact with the air, thereby The heat dissipation efficiency is improved, and a larger surface area means that more heat can be transferred from the fins 31 to the air. At the same time, the strip connecting portion 311 is fixed to the second end of the second rotating shaft 53 or the transmission plate 51, that is, the position and angle of the strip connecting portion 311 and the arc-shaped heat dissipation portion 312 can change with the rotation of the second rotating shaft 53 or the transmission plate 51, allowing the system to dynamically adjust the overlapping area of ​​the arc-shaped heat dissipation portion 312 with the heat dissipation fins according to the temperature of the heat dissipation component to be cooled, thereby adjusting the heat dissipation area to achieve more precise temperature control.

[0057] In one embodiment, referring to Figure 1 The heat dissipation mechanism includes two memory metal strips 2, which are mirror-arranged based on the center line of the shell 1.

[0058] As an example, there are two memory metal strips 2, and the two memory metal strips 2 are mirror-set based on the center line of the shell 1, which can ensure that the transmission component 5 and the heat dissipation component 3 are evenly distributed on the entire shell 1, which helps to balance the force and movement, reduce structural deviation and imbalance, and thus improve the stability of the entire heat dissipation mechanism. The arrangement of two memory metal strips 2 in the heat dissipation mechanism increases the fault tolerance capability in the event of a failure. When one of them fails, the other can still maintain a certain degree of function, ensuring the basic operation of the heat dissipation mechanism.

[0059] In one embodiment, referring to Figure 1 and Figure 2 The shell 1 includes a bottom plate, a top plate and four wall plates; the bottom plate and the top plate are arranged opposite to each other and connected through four wall plates; an opening is provided at the connection between the top plate and a wall plate, the first end of the memory metal strip 2 is connected to the part of the top plate close to the opening, and the second end of the memory metal strip 2 is connected to the heat dissipation component 3 arranged at the opening.

[0060] As an example, the shell 1 includes a bottom plate, a top plate and four wall plates; the bottom plate and the top plate are specifically arranged opposite to each other and connected through four wall plates to form an accommodating space for placing the main components of the heat dissipation mechanism; an opening is provided on one wall plate, the first end of the memory metal strip 2 is connected to the portion of the top plate close to the opening, and the second end of the memory metal strip 2 is connected to the heat dissipation component 3 arranged at the opening, and changing the shape of the memory metal strip 2 can drive the heat dissipation component 3 to move, so as to control the position of the heat dissipation component 3 to be at a position with high heat dissipation efficiency, thereby adjusting the heat dissipation effect of the heat dissipation mechanism.

[0061] The utility model embodiment provides a heat exchanger, referring to Figure 3 , including a mounting frame 6, a water exchanger 7, a refrigerant exchanger 8 and a heat dissipation mechanism; the water exchanger 7 and the refrigerant exchanger 8 are arranged on opposite sides of the mounting frame 6 along a first direction, the water exchanger 7 is provided with a first heat dissipation fin, and the refrigerant exchanger 8 is provided with a second heat dissipation fin; the heat dissipation mechanism is arranged on one side of the mounting frame 6 perpendicular to the first direction; the heat dissipation component 3 and the first heat dissipation fin are at least partially overlapped, and the heat dissipation component 3 and the second heat dissipation fin are at least partially overlapped.

[0062] As an example, the heat exchanger includes a mounting frame 6, a water exchanger 7, a refrigerant exchanger 8 and a heat dissipation mechanism. When installing, the mounting frame 6 is used as a base, and the water exchanger 7 and the refrigerant exchanger 8 are arranged on opposite sides of the mounting frame 6 along the first direction; the heat dissipation mechanism is arranged on one side of the mounting frame 6 perpendicular to the first direction, and the water exchanger 7, the refrigerant exchanger 8 cooperate with the heat dissipation mechanism to achieve heat dissipation of the heat dissipation component 3. The heat dissipation mechanism specifically includes a shell 1, a memory metal strip 2 and a heat dissipation component 3; when installing, the shell 1 is used as a base, and then the first end of the memory metal strip 2 is connected to the inner wall of the shell 1, and the second end of the memory metal strip 2 is connected to the heat dissipation component 3, and at least part of the heat dissipation component 3 is located outside the shell 1; the memory metal strip 2 is used to adjust the position of the heat dissipation component 3 according to the ambient temperature, adjust the overlap area between the heat dissipation component 3 and the first heat dissipation fin of the water exchanger 7 and the second heat dissipation fin of the refrigerant exchanger 8, and then adjust the heat dissipation area, so as to achieve more accurate temperature control, so as to adjust the working state of the heat dissipation mechanism and ensure that the heat dissipation effect meets the use requirements. The material of the memory metal strip 2 is nickel-titanium alloy, which is a typical shape memory alloy and has the characteristic of automatically changing shape at different temperatures. That is to say, the memory metal strip 2 can be deformed differently according to the actual measured ambient temperature, so that the heat dissipation component 3 connected thereto can be adjusted in position, thereby adjusting the working state of the heat dissipation mechanism, providing accurate temperature control heat dissipation efficiency, and ensuring that the heat dissipation effect meets the use requirements. Among them, the memory metal strip 2 includes two states, arc and straight, corresponding to different ambient temperatures, to adjust the position of the heat dissipation component 3; for example, under normal temperature conditions, the memory metal strip 2 is in an arc state, and the heat dissipation component 3 in this state has a large overlap area with the heat dissipation part, and the heat dissipation efficiency of the heat dissipation mechanism is low; under high temperature conditions, the memory metal strip 2 is deformed, changing from an arc state to a straight state, adjusting the position of the heat dissipation component 3, and the heat dissipation component 3 in this state has a small overlap area with the heat dissipation part, and the heat dissipation efficiency of the heat dissipation mechanism is high.

[0063] In this example, the memory metal strip 2 of the heat dissipation mechanism can change shape at different temperatures, and can automatically adjust the working state of the heat dissipation component 3. The physical properties of the memory metal strip 2 are utilized to achieve a reliable response to temperature changes, reduce dependence on electronic control devices, and improve the overall reliability and safety of the equipment.

[0064] For example, the heat dissipation mechanism is applied to a car. When the car engine is not started, the memory metal strip 2 maintains an upwardly bent shape. Through the lever principle, the heat dissipation component 3 is driven to rotate downward, so that the overlap area between the heat dissipation component 3 and the heat dissipation part is large, so that the space inside the heat dissipation part is reduced, and the heat dissipation effect is reduced, so as to prevent the car from being difficult to start and increasing fuel consumption due to the excessive heat dissipation effect of the heat dissipation mechanism when the car is just started. When the gearbox oil is in a high temperature state after the car is started, the memory metal strip 2 itself will deform when the temperature rises, and begin to straighten from the upwardly bent shape. Through the lever principle, the heat dissipation component 3 is driven to rotate upward, so that the overlap area between the heat dissipation component 3 and the heat dissipation part is small, so that the space inside the heat dissipation part is increased, and the heat dissipation effect is improved; by utilizing the physical properties of the memory metal strip 2, a reliable response to temperature changes is achieved, the dependence on the electronic control device is reduced, the overall reliability and safety of the equipment are improved, and the possibility of failure of the car itself and the maintenance cost are reduced.

[0065] In one embodiment, referring to Figure 3 The heat exchanger further comprises a module bracket 9, the mounting frame 6 is fixed on the module bracket 9, and the module bracket 9 is used to be mounted on the first workpiece.

[0066] As an example, the heat exchanger also includes a module bracket 9, and the first workpiece is the workpiece to be cooled. During installation, the module bracket 9 is installed on the first workpiece, and the mounting frame 6 is fixed on the module bracket 9, which can provide stable support for the installation of the heat exchanger.

[0067] In one embodiment, referring to Figure 3 The heat exchanger further includes a heat conducting plate 10 and a heat spreader 11 ; the heat conducting plate 10 is disposed on the mounting frame 6 , and the heat spreader 11 is mounted on the heat conducting plate 10 and in contact with the heat dissipation assembly 3 .

[0068] As an example, the heat exchanger also includes a heat conducting plate 10 and a heat spreader 11; during installation, the heat conducting plate 10 is set on the mounting frame 6, and then the heat spreader 11 is installed on the heat conducting plate 10 and contacts the heat dissipation component 3; when the temperature is transmitted to the water exchanger 7 and the refrigerant exchanger 8, the temperature is transmitted to the heat spreader 11 through the heat conducting plate 10, and the heat spreader 11 is in contact with the heat dissipation component 3, namely the fins 31, so as to transmit the heat to the fins 31, thereby enhancing the heat dissipation effect and improving the utilization rate of the structure.

[0069] An embodiment of the utility model provides a car, comprising a heat exchanger.

[0070] As an example, the heat exchanger includes a mounting frame 6, a water exchanger 7, a refrigerant exchanger 8 and a heat dissipation mechanism. When installing, the mounting frame 6 is used as a base, and the water exchanger 7 and the refrigerant exchanger 8 are arranged on opposite sides of the mounting frame 6 along the first direction; the heat dissipation mechanism is arranged on one side of the mounting frame 6 perpendicular to the first direction, and the water exchanger 7, the refrigerant exchanger 8 cooperate with the heat dissipation mechanism to achieve heat dissipation of the heat dissipation component 3. The heat dissipation mechanism specifically includes a shell 1, a memory metal strip 2 and a heat dissipation component 3; when installing, the shell 1 is used as a base, and then the first end of the memory metal strip 2 is connected to the inner wall of the shell 1, and the second end of the memory metal strip 2 is connected to the heat dissipation component 3, and at least part of the heat dissipation component 3 is located outside the shell 1; the memory metal strip 2 is used to adjust the position of the heat dissipation component 3 according to the ambient temperature, adjust the overlap area between the heat dissipation component 3 and the first heat dissipation fin of the water exchanger 7 and the second heat dissipation fin of the refrigerant exchanger 8, and then adjust the heat dissipation area, so as to achieve more accurate temperature control, so as to adjust the working state of the heat dissipation mechanism and ensure that the heat dissipation effect meets the use requirements. The material of the memory metal strip 2 is nickel-titanium alloy, which is a typical shape memory alloy and has the characteristic of automatically changing shape at different temperatures. That is to say, the memory metal strip 2 can be deformed differently according to the actual measured ambient temperature, so that the heat dissipation component 3 connected thereto can be adjusted in position, thereby adjusting the working state of the heat dissipation mechanism, providing accurate temperature control heat dissipation efficiency, and ensuring that the heat dissipation effect meets the use requirements. Among them, the memory metal strip 2 includes two states, arc and straight, corresponding to different ambient temperatures, to adjust the position of the heat dissipation component 3; for example, under normal temperature conditions, the memory metal strip 2 is in an arc state, and the heat dissipation component 3 in this state has a large overlap area with the heat dissipation part, and the heat dissipation efficiency of the heat dissipation mechanism is low; under high temperature conditions, the memory metal strip 2 is deformed, changing from an arc state to a straight state, adjusting the position of the heat dissipation component 3, and the heat dissipation component 3 in this state has a small overlap area with the heat dissipation part, and the heat dissipation efficiency of the heat dissipation mechanism is high.

[0071] In this example, the memory metal strip 2 of the heat dissipation mechanism can change shape at different temperatures, and can automatically adjust the working state of the heat dissipation component 3. The physical properties of the memory metal strip 2 are utilized to achieve a reliable response to temperature changes, reduce dependence on electronic control devices, and improve the overall reliability and safety of the equipment.

[0072] For example, the heat dissipation mechanism is applied to a car. When the car engine is not started, the memory metal strip 2 maintains an upwardly bent shape. Through the lever principle, the heat dissipation component 3 is driven to rotate downward, so that the overlap area between the heat dissipation component 3 and the heat dissipation part is large, so that the space inside the heat dissipation part is reduced, and the heat dissipation effect is reduced, so as to prevent the car from being difficult to start and increasing fuel consumption due to the excessive heat dissipation effect of the heat dissipation mechanism when the car is just started. When the gearbox oil is in a high temperature state after the car is started, the memory metal strip 2 itself will deform when the temperature rises, and begin to straighten from the upwardly bent shape. Through the lever principle, the heat dissipation component 3 is driven to rotate upward, so that the overlap area between the heat dissipation component 3 and the heat dissipation part is small, so that the space inside the heat dissipation part is increased, and the heat dissipation effect is improved; by utilizing the physical properties of the memory metal strip 2, a reliable response to temperature changes is achieved, the dependence on the electronic control device is reduced, the overall reliability and safety of the equipment are improved, and the possibility of failure of the car itself and the maintenance cost are reduced.

[0073] The embodiments described above are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the protection scope of the present invention.

Claims

1. A heat dissipation mechanism, characterized in that: It includes a shell, a memory metal strip and a heat dissipation component; The first end of the memory metal strip is connected to the inner wall of the shell, the second end of the memory metal strip is connected to the heat dissipation component, and at least part of the heat dissipation component is located outside the shell; The memory metal strip is used to adjust the position of the heat dissipation component according to the ambient temperature.

2. The heat dissipation mechanism according to claim 1, characterized in that: The heat dissipation mechanism also includes an elastic member; The first end of the elastic member is connected to the inner wall of the shell, and the second end of the elastic member is connected to the second end of the memory metal strip.

3. The heat dissipation mechanism according to claim 1, characterized in that: The heat dissipation mechanism also includes a transmission component; The first end of the transmission component is connected to the second end of the memory metal strip, and the second end of the transmission component is connected to the heat dissipation component.

4. The heat dissipation mechanism according to claim 3, characterized in that: The transmission assembly includes a transmission plate, a first rotating shaft and a second rotating shaft; The first end of the transmission plate is connected to the second end of the memory metal strip via a first rotating shaft; The second rotating shaft is fixedly mounted on the housing, the second end of the transmission plate rotates around the second rotating shaft, and the heat dissipation component is connected to the second end of the transmission plate; Alternatively, the second rotating shaft is rotatably mounted on the housing, the second end of the transmission plate is fixedly connected to the second rotating shaft, and the heat dissipation component is connected to the second rotating shaft.

5. The heat dissipation mechanism according to claim 4, characterized in that: The heat dissipation assembly includes a plurality of fins, and the plurality of fins are evenly distributed along the axial direction of the second rotating shaft.

6. The heat dissipation mechanism according to claim 5, characterized in that: The fin comprises a strip-shaped connecting portion and an arc-shaped heat dissipating portion extending from one end of the strip-shaped connecting portion; The other end of the strip-shaped connecting portion is connected to the second end of the memory metal strip, and the arc-shaped heat dissipation portion is used to at least partially overlap with the heat dissipation component.

7. The heat dissipation mechanism according to claim 1, characterized in that: The heat dissipation mechanism includes two memory metal strips, and the two memory metal strips are mirror-imaged based on the center line of the shell.

8. The heat dissipation mechanism according to claim 1, characterized in that: The shell includes a bottom plate, a top plate and four wall plates; The bottom plate is arranged opposite to the top plate and connected to each other through the four wall plates; An opening is provided at the junction of the top plate and the wall plate, the first end of the memory metal strip is connected to the portion of the top plate close to the opening, and the second end of the memory metal strip is connected to the heat dissipation component arranged at the opening.

9. A heat exchanger, characterized in that: It comprises a mounting frame, a water exchanger, a refrigerant exchanger and a heat dissipation mechanism according to any one of claims 1 to 8; The water exchanger and the refrigerant exchanger are arranged on opposite sides of the mounting frame along the first direction, the water exchanger is provided with a first heat dissipation fin, and the refrigerant exchanger is provided with a second heat dissipation fin; The heat dissipation mechanism is arranged on one side of the mounting frame perpendicular to the first direction; the heat dissipation component and the first heat dissipation fin are at least partially overlapped, and the heat dissipation component and the second heat dissipation fin are at least partially overlapped.

10. The heat exchanger according to claim 9, characterized in that The heat exchanger further comprises a module bracket, the mounting frame is fixed on the module bracket, and the module bracket is used to be mounted on the first workpiece.

11. The heat exchanger according to claim 9, characterized in that The heat exchanger also includes a heat conducting plate and a heat sink; The heat conducting plate is arranged on the mounting frame, and the heat spreader is mounted on the heat conducting plate and contacts the heat dissipation assembly.

12. A car, characterized in that: A heat exchanger comprising any one of claims 9 to 11.

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