CN111336160A

CN111336160A - Cooling system and engineering mechanical equipment

Info

Publication number: CN111336160A
Application number: CN202010253381.XA
Authority: CN
Inventors: 陈育; 尹红兵
Original assignee: Guangzhou Dahua Desheng Thermal Management Science And Technology Co ltd
Current assignee: Guangzhou Dahua Desheng Thermal Management Science And Technology Co ltd
Priority date: 2020-04-02
Filing date: 2020-04-02
Publication date: 2020-06-26

Abstract

The invention relates to a heat dissipation system and engineering mechanical equipment, which comprise: a controller; a heat sink; the wind driving piece is oppositely arranged on one side of the heat dissipation device; and the power device is in driving connection with the wind driving part and is also electrically connected with the controller, and the power device is used for driving the wind driving part to switch between forward rotation and reverse rotation. When the dust is accumulated to a certain thickness, the heat dissipation capability of the heat dissipation device is inevitably influenced. At the moment, the controller can drive the power device to switch to reverse, namely, the air driving piece can be driven to rotate reversely, the air driving piece blows air to the heat dissipation device and then becomes air suction, and the covered dust can be separated from the surface of the heat dissipation device under the action of the attraction of the air, so that the cleaning purpose is achieved. The loss of manpower and material resources can be reduced, the cost expenditure of enterprises is reduced, meanwhile, the engineering machinery equipment can be guaranteed to continuously work, and the working efficiency is further improved.

Description

Cooling system and engineering mechanical equipment

Technical Field

The invention relates to the technical field of mechanical heat dissipation, in particular to a heat dissipation system and engineering mechanical equipment.

Background

Work equipment generally refers to larger pieces of machinery, such as heavy trucks, that are used in construction to assist workers in completing construction operations. In the case of a heavy truck, the requirement for the driving power of the power system is high due to the large load capacity, and accordingly, the heat generated during operation is large. In order to ensure reliable and continuous operation for a long time, a special heat dissipation system needs to be equipped. The existing heat dissipation system generally adopts an air cooling mode for heat dissipation, namely, the heat is taken away in time by driving the air flow in the surrounding environment, so as to achieve the purpose of temperature reduction.

However, since the heavy truck operates in an outdoor harsh environment with extremely high dust for most of the time, the dust floating in the air flows along with the air and covers the surface of the radiator of the heat dissipation system, and when the dust accumulates to a certain thickness, a heat-resistant layer is formed, so that the air and the heat dissipation system cannot effectively perform heat exchange operation in time, and the working performance of the heat dissipation system is affected. The dust on the surface of the radiator needs to be manually cleaned by a constructor regularly, and the regular manual cleaning not only can affect the working efficiency of a heavy truck, but also can cause high labor intensity of the constructor, so that the labor cost of an enterprise is increased.

Disclosure of Invention

Therefore, a heat dissipation system and engineering mechanical equipment are needed to be provided, and the problems that manual dust cleaning in the prior art is time-consuming, labor-consuming and low in efficiency are solved.

The technical scheme is as follows:

in one aspect, the present application provides a heat dissipation system, comprising:

a controller;

a heat sink;

the wind driving piece is oppositely arranged on one side of the heat dissipation device; and

the power device is in driving connection with the wind driving part and is also electrically connected with the controller, and the power device is used for driving the wind driving part to switch between forward rotation and reverse rotation.

The heat dissipation system is applied to various engineering mechanical equipment and used for cooling and dissipating heat of equipment with large heat productivity so as to ensure that the engineering mechanical equipment continuously and reliably works, and the heat dissipation system has self-cleaning capability and can ensure the heat dissipation capability. Specifically, when the heat dissipation system normally works, the power device drives the air driving part to rotate positively, the air driving part blows cold air to the heat dissipation device, the cold air can realize heat exchange with a cooling medium in the heat dissipation device in the process of penetrating through the heat dissipation device, the cold air absorbs heat and is heated up, high temperature can be taken away, and the purposes of heat dissipation and cooling are achieved. However, considering that the engineering machinery equipment works in a dusty environment for a long time, a part of dust floating in the air inevitably covers the surface of the heat dissipation device, and when the dust is accumulated to a certain thickness, the heat dissipation capability of the heat dissipation device is inevitably affected. At this moment, the controller just can drive power device and switch to the reversal, can drive the reversal of wind driving piece promptly, the wind driving piece becomes induced drafting by blowing the air to heat abstractor, the dust that so covers alright break away from the heat abstractor surface under the appeal effect of wind, reach clean purpose, realize the effect of heat abstractor automatically cleaning promptly, so just do not need constructor regularly to equip the shut down to engineering machine, later to the manual deashing operation of heat abstractor, not only can reduce manpower and materials loss, reduce the cost expenditure of enterprise, can ensure engineering machine to equip continuous uninterrupted duty simultaneously, further promote work efficiency.

The technical solution of the present application is further described below:

in one embodiment, the wind driving member is a fan, the power device includes a mounting bracket and a driving source disposed on the mounting bracket for outputting rotational power, the driving source is electrically connected to the controller, and the driving source is drivingly connected to the fan.

In one embodiment, the power device further comprises a rotation speed sensor disposed on the driving source, and the rotation speed sensor is electrically connected with the controller.

In one embodiment, the power device further comprises an electromagnetic directional valve and an electromagnetic proportional overflow valve which are arranged on the driving source, and the electromagnetic directional valve and the electromagnetic proportional overflow valve are respectively and electrically connected with the controller.

In one embodiment, the power device further comprises a connecting plate, one end of the connecting plate is connected with the mounting bracket, and the other end of the connecting plate is connected with the heat dissipation device.

In one embodiment, the power device further includes a wind shield, and the wind shield is connected with the heat dissipation device and covers the fan.

In one embodiment, the power device further comprises a protective net, wherein the protective net is arranged on the wind shield and covers one side of the fan far away from the heat dissipation device; wherein, the protection net comprises a first half net and a second half net which are independent from each other.

In one embodiment, the heat dissipation device comprises a first radiator, a second radiator and a third radiator which are sequentially connected in a stacked manner along the direction far away from the wind driving part; the temperature of the cooling medium in the first radiator, the temperature of the cooling medium in the second radiator and the temperature of the cooling medium in the third radiator are arranged from low to high.

In one embodiment, the heat dissipation device further comprises an intercooler arranged above the first radiator side by side, and a secondary water tank communicated with the second radiator.

In addition, the application also provides engineering machinery equipment which comprises the heat dissipation system.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention.

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic view illustrating an assembly structure of a heat dissipation system according to an embodiment of the present invention;

fig. 2 is a schematic diagram of the exploded structure of fig. 1.

Description of reference numerals:

10. a first heat sink; 20. a second heat sink; 30. a third heat sink; 40. a fan; 50. mounting a bracket; 60. a drive source; 70. a rotational speed sensor; 80. an electromagnetic directional valve; 90. a connector tile; 100. a wind protection cover; 200. a protective net; 210. a first half-net; 220. a second half-net; 300. an intercooler; 400. and an auxiliary water tank.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

The embodiment of the application provides engineering machinery equipment which can be various types of mechanical products applied to various occasions, such as mining machinery, construction machinery, agricultural machinery, packaging machinery and the like. Taking construction machines as an example, heavy trucks are commonly used in construction machines and are used for loading and transporting materials. Because the weight of the loaded goods usually reaches several tons or even dozens of tons, the requirement on the operation power of the heavy truck is higher, the operation power is high, the corresponding calorific value is large, and in order to avoid the threat of long-term high temperature to the reliable operation of the heavy truck, a heat dissipation system needs to be arranged on the heavy truck, so that the heat dissipation system can dissipate the high-temperature heat in time.

As shown in fig. 1 and 2, a heat dissipation system according to an embodiment of the present invention is an integrated multifunctional independent heat dissipation system, which can be easily assembled and disassembled integrally and flexibly assembled to various engineering machinery equipment.

Specifically, the heat dissipation system includes: controller, heat abstractor, wind driving piece and power device. As can be seen from the perspective of fig. 1, the heat sink is arranged at the leftmost side of the overall heat dissipation system, the wind driven member is arranged near the middle, and the power unit is arranged at the rightmost side of the overall heat dissipation system. When the cooling system normally works, the wind driving piece drives wind to flow from the right side to the left side, and the wind can contact with the cooling system to finish heat exchange and cooling; when the cleaning is needed, the wind driving part can drive wind to flow from the left side to the right side, and the wind can carry dust on the heat dispersing device, so that the cleaning purpose is realized.

The controller is a central control component of the heat dissipation system and is used for realizing independent self-operation of the heat dissipation system. For example, the controller is electrically connected to the power unit, and the power unit can automatically turn on or off the power output by outputting a command to the power unit. Alternatively, the controller may be, but is not limited to, a PLC device, a micro-controller computer, etc., and may be specifically selected according to actual needs, and is not specifically limited herein.

The wind driving piece is oppositely arranged on one side of the heat dissipation device; the power device is in driving connection with the wind driving part and is also electrically connected with the controller, and the power device is used for driving the wind driving part to switch between forward rotation and reverse rotation. By means of the forward rotation and the reverse rotation of the wind driving part, the flow direction of wind can be changed, and the heat dissipation device can be flexibly switched between a heat dissipation and cooling working mode and a self-cleaning working mode.

In summary, the implementation of the technical solution of the present embodiment has the following beneficial effects: the heat dissipation system is applied to various engineering mechanical equipment and used for cooling and dissipating equipment with large heat productivity so as to ensure that the engineering mechanical equipment continuously and reliably works, and the heat dissipation system has self-cleaning capability and can ensure the heat dissipation capability. Specifically, when the heat dissipation system normally works, the power device drives the air driving part to rotate positively, the air driving part blows cold air to the heat dissipation device, the cold air can realize heat exchange with a cooling medium in the heat dissipation device in the process of penetrating through the heat dissipation device, the cold air absorbs heat and is heated up, high temperature can be taken away, and the purposes of heat dissipation and cooling are achieved. However, considering that the engineering machinery equipment works in a dusty environment for a long time, a part of dust floating in the air inevitably covers the surface of the heat dissipation device, and when the dust is accumulated to a certain thickness, the heat dissipation capability of the heat dissipation device is inevitably affected. At this moment, the controller just can drive power device and switch to the reversal, can drive the reversal of wind driving piece promptly, the wind driving piece becomes induced drafting by blowing the air to heat abstractor, the dust that so covers alright break away from the heat abstractor surface under the appeal effect of wind, reach clean purpose, realize the effect of heat abstractor automatically cleaning promptly, so just do not need constructor regularly to equip the shut down to engineering machine, later to the manual deashing operation of heat abstractor, not only can reduce manpower and materials loss, reduce the cost expenditure of enterprise, can ensure engineering machine to equip continuous uninterrupted duty simultaneously, further promote work efficiency.

Further, the heat dissipation system also comprises a temperature sensor which is electrically connected with the controller and used for detecting the surface temperature of the heat dissipation device. If more dust covers the heat abstractor, the temperature that the temperature sensor detected this moment can be on the low side than the temperature that should characterize when normal work, and temperature sensor just can feed back the signal for the controller this moment, and the controller just can obtain a signal that begins work, and drive power device drives the work of wind driving piece, realizes inhaling grey self-cleaning operation.

Specifically, the wind driving member may be any one of the prior art components or devices such as a turbine, a fan 40, etc. capable of flowing the driving wind. Preferably, in one embodiment, the wind-driven member is a fan 40. The fan 40 is simple in structure, easy to obtain, convenient to maintain and low in use cost. The blades, shape, etc. of the fan 40 are not particularly limited herein, so as to obtain a wind-driving effect at a desired flow rate.

Referring to fig. 1 and fig. 2, the power device includes a mounting bracket 50, and a driving source 60 disposed on the mounting bracket 50 for outputting rotational power, wherein the driving source 60 is electrically connected to the controller, and the driving source 60 is drivingly connected to the fan 40. Therefore, the driving source 60 can be integrally assembled with the heat sink through the mounting bracket 50, thereby ensuring the stability and reliability of the heat sink system. On the basis, the driving source 60 outputs the rotating power to drive the fan 40 to rotate, so as to achieve the effect of blowing air to the heat sink or sucking air from the heat sink.

The driving source 60 may be a motor. The mounting bracket 50 is of an H-shaped frame structure, the main body part is an H-shaped frame body formed by welding round steel pipes or square steel pipes and at least one transverse web member connected between two vertical support rods of the H-shaped frame body, the structural strength is high, the manufacturing and forming are easy, and the use is reliable. In addition, the middle part fretwork position of H type support body still welded fastening has the mounting panel, and the middle part trompil of mounting panel for the motor passes through the bolt lock joint back on the mounting panel, and the power shaft of motor can directly pass the trompil and be connected with fan 40, and structural arrangement is simple, and space utilization is high, does benefit to the whole thickness that reduces cooling system, and then reduces the installation space who occupies. In addition, a safety distance is formed between the fan 40 and the mounting bracket 50, so that the fan 40 does not interfere with the mounting bracket 50 when rotating.

Referring to fig. 2, in a further embodiment, the power device further includes a rotation speed sensor 70 disposed on the driving source 60, and the rotation speed sensor 70 is electrically connected to the controller. The rotating speed sensor 70 is arranged on the surface of the motor and is opposite to a gear on a power shaft of the motor, so that the rotating speed sensor 70 can monitor the rotating speed output by the motor in real time and feed the rotating speed back to the controller, and the controller transmits a processed rotating speed signal to an instrument in a cab for display, so that a driver can monitor the rotating speed, and the operation safety and reliability of engineering mechanical equipment are improved.

In addition, when the fan 40 is switched to reverse rotation at a certain time when the fan 40 rotates forward at a high speed, the rotation speed of the fan 40 needs to be controlled to be reduced to a level lower than 500r/min, so as to avoid the occurrence of operation failure due to rigid damage to equipment caused by transient impact caused by over-high speed during switching and steering. The speed sensor 70 is also used to monitor that the speed of the fan 40 at which the reverse rotation is effected cannot exceed a safety value of 500 r/min. And the controller is also provided with a monitoring program, when the reverse rotation function is executed, the controller controls the rotating speed of the fan 40 to gradually slow down, and the reverse rotation program is not started until the rotating speed is monitored to be lower than 500r/min, so that the safety of the motor is protected to the maximum extent.

In addition, in order to switch the positive rotation of the power shaft of the motor to the negative rotation or switch the negative rotation of the power shaft of the motor to the positive rotation, the power device further comprises an electromagnetic directional valve 80 and an electromagnetic proportional overflow valve which are arranged on the driving source 60, and the electromagnetic directional valve 80 and the electromagnetic proportional overflow valve are respectively and electrically connected with the controller. The electromagnetic directional valve 80 is connected with the hydraulic control system through a pipeline, so that the purpose of switching the forward and reverse rotation of the fan 40 by realizing the communication of oil way reversing is achieved. Specifically, the motor has a first oil port and a second oil port. The first oil port and the second oil port of the motor can serve as oil inlets or oil outlets. When the first oil port takes oil, the motor drives the fan 40 to rotate forward, and at the moment, the hydraulic oil enters the motor from the first oil port and flows out of the motor from the second oil port. When the second oil port takes oil, the motor drives the fan 40 to rotate reversely, and at the moment, the hydraulic oil enters the motor from the second oil port and flows out of the motor from the first oil port.

Further, first hydraulic fluid port and second hydraulic fluid port all connect in solenoid directional valve 80, thereby solenoid directional valve 80 can switch the valve position selectively switches on output tube and first hydraulic fluid port or second hydraulic fluid port. When the electromagnetic directional valve 80 conducts the output pipe and the first oil port, the oil pump can guide the hydraulic oil into the first oil port through the output pipe, and then the forward rotation control of the fan 40 is realized; in addition, when the electromagnetic directional valve 80 conducts the output pipe and the second oil port, the oil pump can guide the hydraulic oil into the second oil port through the output pipe, and then the reverse rotation control of the fan 40 is realized. So far, the control of the forward and reverse rotation of the fan 40 can be realized by controlling the switching of the oil inlet direction of the motor through the electromagnetic directional valve 80, and finally, the switching of the heat dissipation working mode of the heat dissipation system and the dust self-cleaning working mode can be realized.

The electromagnetic proportional overflow valve is electrically connected and matched with the controller, so that the overflow pressure can be controlled to increase according to the temperature rise of a cooling medium in the heat dissipation device, the purpose of increasing the rotating speed of the fan 40 is achieved, and the heat dissipation and cooling capacity is improved; or when the temperature of the cooling medium is reduced, the overflow pressure is controlled to be reduced, the purpose of reducing the rotating speed of the fan 40 is achieved, the working conformity of the motor is lightened, and the service life of the motor is prolonged.

Referring to fig. 1 and fig. 2, in addition, in an embodiment, the power device further includes a wind shield 100, and the wind shield 100 is connected to the heat dissipation device and covers the fan 40. The wind guard cover 100 can ensure that as much wind as possible blows toward the heat dissipation device when the fan 40 blows, ensure that more wind participates in the heat dissipation and cooling operation, and improve the heat dissipation efficiency of the heat dissipation system. Specifically, the wind shield 100 is an annular member, and the main body portion thereof is a conical cylinder structure, and the large end thereof is directed to the heat dissipation device, and has wind gathering and guiding functions.

Further, in an embodiment, the power device further includes a protection net 200, and the protection net 200 is disposed on the wind-guard cover 100 and covers a side of the fan 40 away from the heat dissipation device. The protection net 200 may form a lateral barrier to the fan 40, and may prevent a dangerous accident from occurring due to the construction worker or a tool accidentally touching the fan 40 rotating at a high speed. Preferably, the protection net 200 is designed in a split structure, that is, the protection net 200 includes a first half net 210 and a second half net 220 that are independent from each other, and the first half net 210 and the second half net 220 are both in a fan-shaped structure and are respectively locked to the wind guard 100 by bolts. Because the installation back, can form the annular opening between installing support 50 and the fan guard 100, therefore adopt the first half net 210 and the half net 220 design of second of components of a whole that can function independently, conveniently when fan 40 or motor broke down, pull the first half net 210 and the half net 220 of second from the side direction of annular opening and demolish, and need not to disassemble installing support 50 earlier, then at disassembling protection network 200, reducible maintenance operation degree of difficulty and consuming time, improve the simple operation nature. Preferably, the first half-net 210 and the second half-net 220 are designed to have a symmetrical structure, which can greatly reduce the manufacturing difficulty and cost. In addition, the first half net 210 and the second half net 220 adopt a dense lattice design, so that the protective net 200 can block the ash layer in a part of air, the number of the ash layers covering the heat dissipation device is reduced, and the burden of self-cleaning of the heat dissipation system can be further reduced.

With reference to fig. 1 and fig. 2, in an embodiment, the heat dissipation device includes a first heat sink 10, a second heat sink 20, and a third heat sink 30 sequentially stacked and connected along a direction away from the wind driving component; wherein the temperature of the cooling medium in the first radiator 10, the temperature of the cooling medium in the second radiator 20, and the temperature of the cooling medium in the third radiator 30 are arranged from low to high. Thus, the heat exchange potential is greatest because the temperature of the cooling medium in the first radiator 10 closest to the fan 40 is the lowest, and, similarly, the temperature of the cooling medium in the third radiator 30 of the first principle fan 40 is the highest, and relatively speaking, the heat exchange potential is the smallest. Thus, when the fan 40 rotates forward to blow air to the heat dissipation device, the air can flow through the first heat sink 10, the second heat sink 20 and the third heat sink 30 in sequence, so as to realize heat exchange and heat dissipation step by step for multiple times, and the heat dissipation capability of the heat dissipation system can be greatly enhanced.

Optionally, the first radiator 10 is a hydraulic oil radiator, that is, the cooling medium in the first radiator 10 is hydraulic oil; the second radiator 20 is a water radiator, that is, the cooling medium in the second radiator 20 is water; the third radiator 30 is a torque converter oil radiator, i.e., the cooling medium in the third radiator 30 is torque converter oil. The left side end and the right side end of the torque converter oil radiator are assembled and connected with the left side end and the right side end of the water radiator through a plurality of groups of bolt assemblies, but the working areas of the left side end and the right side end are required to be ensured to be overlapped according to the maximum area, so that the blocking of air flowing is reduced. The left and right sides of the water radiator are further assembled and connected with the left and right sides of the wind shield 100 through a plurality of sets of bolt assemblies. And the hydraulic oil radiator is screwed on the surface of the water radiator facing the fan 40 through a bolt assembly. The wind shield 100 is assembled and connected to the mounting bracket 50 by a bolt assembly. In conclusion, as all main components of the heat dissipation system are connected and fixed by adopting a threaded connection structure, the connection mode is simple, and the assembly and disassembly operation is convenient and labor-saving. Of course, it should be noted that, in other embodiments, other mounting structures in the prior art, such as snap connection, riveting, magnetic connection, and adhesion, may also be adopted between the torque converter oil radiator and the water radiator, between the water radiator and the hydraulic oil radiator, between the hydraulic oil radiator and the wind-protecting cover 100, and between the wind-protecting cover 100 and the mounting bracket 50, and are also within the scope of the present application.

It should be noted that the three-stage heat exchange structure is not a limitation to the scope of the present application. In other embodiments, other numbers of multistage heat exchange structures such as two-stage or four-stage structures may also be employed.

With continued reference to fig. 2, in an embodiment, the power device further includes a connection plate 90, one end of the connection plate 90 is connected to the mounting bracket 50, and the other end of the connection plate 90 is connected to the heat dissipation device. Specifically, the number of the joint plates 90 is four, two joint plates are installed at the top end of the mounting bracket 50, the other two joint plates are installed at the bottom end of the mounting bracket 50, and the four joint plates 90 are simultaneously screwed and fixed with four mounting blocks preset on the surface of the water radiator in a one-to-one correspondence manner. Therefore, the mounting strength of the mounting bracket 50 can be further improved, and the bearing stability and the anti-vibration capability of the motor and the fan 40 are further ensured.

The heat dissipating apparatus further includes an intercooler 300 disposed side by side above the first radiator 10, and a subtank 400 communicating with the second radiator 20. Specifically, the intercooler 300 is also screwed and fixed on the surface of the water radiator by a bolt assembly and is substantially in the same vertical plane as the hydraulic oil radiator. By installing the intercooler 300, the heat dissipation system can be applied to some engineering machinery equipment with supercharging performance, such as a heavy truck with supercharging performance, because for a supercharged engine, the intercooler 300 is an important component of the supercharging system, and functions to reduce the heat load of the engine, improve the air intake amount, and further increase the power of the engine by reducing the temperature of the supercharged high-temperature air. And it is necessary to install intercooler 300 between the supercharger and the intake manifold, whether a supercharged engine or a turbocharged engine.

The auxiliary water tank 400 is arranged on the two connecting plates 90 positioned at the top end of the mounting bracket 50, and the auxiliary water tank 400 is communicated with the water radiator, so that the purpose of changing the heat radiation system into a permanent closed system can be realized, air can be prevented from continuously entering, and the oxidation corrosion to the interior of the heat radiation system can be reduced; the gas-liquid separation in the heat dissipation system can be realized, the stability of the internal pressure of the system is kept, the water pumping quantity of the water pump is increased, and the cavitation corrosion of the water pump is reduced; in addition, the loss of the cooling liquid is avoided, and the water level in the heat dissipation system can be kept unchanged for a long time.

It will be appreciated that the auxiliary radiator tank 400 is actually an expansion tank, and is typically made of a transparent plastic material, and is typically mounted at a position slightly higher than the radiator tank, and is connected to the engine and the radiator tank via a plurality of pipes.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A heat dissipation system, comprising:

a controller;

a heat sink;

2. The heat dissipation system of claim 1, wherein the wind driving member is a fan, the power device includes a mounting bracket, and a driving source disposed on the mounting bracket for outputting rotational power, the driving source is electrically connected to the controller, and the driving source is drivingly connected to the fan.

3. The heat dissipating system of claim 2, wherein the power plant further comprises a rotational speed sensor disposed on the drive source, the rotational speed sensor being electrically connected to the controller.

4. The heat dissipation system of claim 3, wherein the power device further comprises an electromagnetic directional valve and an electromagnetic proportional overflow valve which are arranged on the driving source, and the electromagnetic directional valve and the electromagnetic proportional overflow valve are respectively electrically connected with the controller.

5. The heat dissipating system of claim 4, wherein the power device further comprises a connector tile, one end of the connector tile being connected to the mounting bracket and the other end of the connector tile being connected to the heat dissipating device.

6. The heat dissipating system of claim 5, wherein the power device further comprises a hood coupled to the heat dissipating device and covering an exterior of the fan.

7. The heat dissipation system of claim 6, wherein the power device further comprises a protective mesh, and the protective mesh is arranged on the wind shield and covers one side of the fan away from the heat dissipation device; wherein, the protection net comprises a first half net and a second half net which are independent from each other.

8. The heat dissipation system of any one of claims 1 to 7, wherein the heat dissipation device comprises a first heat sink, a second heat sink, and a third heat sink connected in series in a stack in a direction away from the wind driving member; the temperature of the cooling medium in the first radiator, the temperature of the cooling medium in the second radiator and the temperature of the cooling medium in the third radiator are arranged from low to high.

9. The heat dissipating system of claim 8, wherein the heat dissipating device further comprises an intercooler disposed side-by-side above the first radiator, and a header tank in communication with the second radiator.

10. Construction machinery equipment comprising a heat dissipation system according to any one of claims 1 to 9.