CN213016523U - Engine overhead heat abstractor and heat dissipation control system and excavator - Google Patents
Engine overhead heat abstractor and heat dissipation control system and excavator Download PDFInfo
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- CN213016523U CN213016523U CN202021824889.2U CN202021824889U CN213016523U CN 213016523 U CN213016523 U CN 213016523U CN 202021824889 U CN202021824889 U CN 202021824889U CN 213016523 U CN213016523 U CN 213016523U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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Abstract
The utility model discloses an engine overhead heat dissipation device, a heat dissipation control system and an excavator, wherein the engine overhead heat dissipation device comprises a radiator, an air guide cover and an electronic fan; the internal partition of the radiator is divided into an intercooler and a water cooler; the top surface of the air guide cover is provided with a plurality of fan openings, and each fan opening is internally provided with an electronic fan; the inlet end and the outlet end of the intercooler are provided with flow guide chambers, the flow guide chamber at the inlet end is connected with the air inlet pipe, the flow guide chamber at the outlet end is connected with the air outlet pipe, the air inlet pipe is connected with the turbocharger of the engine, and the air outlet pipe is connected with the combustion chamber of the engine; the water inlet pipe of the water cooler is connected with the water outlet pipe of the engine, and the water outlet pipe of the water cooler is connected with the water return pipe of the engine. The utility model discloses a carry out stepless speed regulation to respective fan work number and rotational speed according to engine coolant temperature and inlet air temperature, improve system efficiency greatly, reduce the power loss of engine, effectively reduce the noise.
Description
Technical Field
The utility model relates to an engine overhead heat abstractor and heat dissipation control system for excavator belongs to engineering machine tool field.
Background
The heat dissipation mode of the traditional excavator is that an engine radiator and a hydraulic oil radiator are stacked front and back and are axially installed with engine fan blades, the rotating speed of the fan is kept to be the same as that of the engine, and a cooling fan sucks air to dissipate heat so as to achieve the effect of cooling. Fig. 1 is a schematic structural diagram of a heat dissipation system of a conventional hydraulic excavator, including: engine 100, fan 200, and radiator 300. The heat dissipation mode has simple structure and low cost, but the heat dissipation effect is influenced by the rotating speed of the engine and is not controlled. The engine generally has the best working temperature, and the traditional heat dissipation mode can not make engine and hydraulic system work in the best temperature range, both can cause power waste, still can influence the work efficiency of excavator. When the rotating speed of the cooling fan is high, the engine radiator is enabled to always keep high heat dissipation capacity, the time for the temperature of the engine to reach the optimal working temperature can be prolonged, particularly in a low-temperature environment, the engine is slowly warmed up, the working efficiency of the engine is affected, the working amount is reduced, and excessive power loss in the engine warming-up process can be caused. When the engine works at low speed and high load in a high-temperature environment and the temperature of the cooling liquid is very high, the fan runs at low speed, the temperature of the engine is easily overhigh, and the service lives of the engine and a vehicle are reduced. In addition, the vibration of the engine directly drives the vibration of the cooling fan, and the radiator is fixed on the frame, so that the vibration of the radiator and the vibration of the cooling fan are asynchronous.
In order to reduce the power consumption of the fan, reduce noise and abrasion, prevent the engine from being overcooled and reduce pollution, an electric control silicone oil clutch fan is adopted on part of the conventional excavators. The method reads an engine water temperature signal, an air inlet temperature signal, a hydraulic oil temperature signal and the like in an engine electronic control unit (ECM), and controls the opening of an electromagnetic valve in a fan clutch according to the collected signals so as to control the rotating speed of a fan. However, this method has the following problems: each heat dissipation module can not be independently controlled; due to the viscosity of the silicone oil, when the clutch is completely separated, the rotating speed has slip, namely when the engine runs, the fan cannot rotate at zero speed, and the fan works in an idle state. When the vehicle runs in a severe cold region, the water temperature is too low, which may damage the economy of the vehicle and the reliability of the engine.
The heat dissipation systems of the two schemes adopt a series integrated side-mounted layout, and the problem of uneven heat dissipation air quantity distribution of the cooling fan in the same air channel is caused by the series connection of the water radiator, the oil radiator, the intercooler and the condenser. Meanwhile, the single engine cooling fan and the integrated radiator cause overlarge areas of the cooling fan and the integrated radiator, so that the design and installation of the whole engine are inconvenient. In addition, the intercooler with the side-mounted structure needs to be connected with a long air inlet pipeline and a long air outlet pipeline on the whole vehicle, so that a large space is occupied, and the manufacturing cost of an intercooler system is high; in addition, the sealing of an air inlet and outlet pipeline of the intercooler is difficult to guarantee, and the air leakage phenomenon is easy to occur, so that the engine fault is caused.
Disclosure of Invention
In order to overcome the defects in the prior art, the utility model provides an engine overhead heat abstractor and heat dissipation control system, the technical scheme that intercooler and water cooler are connected in parallel in overhead has saved the space, has reduced weight, can realize PWM intelligence speed governing, has completely got rid of the dependence on engine speed, and the rotational speed of fan and heat dissipation are only relevant with the heat dissipation demand of engine, and do not relate with the engine running state, have reduced the power loss of engine; the heat dissipation and the accurate temperature control can be independently carried out according to the requirements of an intercooler and a water cooler of the engine; in addition, the problems that the radiator is laterally arranged, the inlet and outlet pipelines are long, the occupied space is large, the manufacturing cost is high, and the air leakage phenomenon of the intercooler is easy to occur are solved; under the condition that the heat dissipation capacity of guaranteeing to produce can not reduce, the electronic fan diameter diminishes, and the noise reduces correspondingly, has improved the whole travelling comfort of vehicle.
In order to achieve the above object, the utility model discloses a following technical scheme realizes:
an engine overhead heat radiation device comprises a radiator, an air guide cover and an electronic fan; the internal partition of the radiator is divided into an intercooler and a water cooler; the air guide cover is fixed on the top surface of the radiator, a plurality of fan openings are formed in the top surface of the air guide cover, and an electronic fan is installed in each fan opening; the inlet end and the outlet end of the intercooler are provided with flow guide chambers, the flow guide chamber at the inlet end is connected with an air inlet pipe, the flow guide chamber at the outlet end is connected with an air outlet pipe, the air inlet pipe is connected with an engine turbocharger, and the air outlet pipe is connected with an engine combustion chamber; the water inlet pipe of the water cooler is connected with the water outlet pipe of the engine, and the water outlet pipe of the water cooler is connected with the water return pipe of the engine.
Further, the radiator is fixed on a covering piece above the engine cylinder cover through a connecting piece.
Further, the connector includes a plurality of fixed brackets; the fixed bracket comprises a first chain plate, a second chain plate and a connecting plate; the first chain plate and the second chain plate are connected through a connecting plate to form a Z-shaped structure; the first chain plate is welded at the bottom of the radiator; and the second chain plate is provided with a plurality of mounting holes and is fixed on the covering part through bolts.
Furthermore, a plurality of through holes are formed in the edge of the periphery of the air guide cover, a plurality of threaded holes are formed in the top surface of the radiator, and the air guide cover is fixed to the top surface of the radiator through screws.
Furthermore, a plurality of threaded holes are formed in the air guide cover positioned at the position of the fan opening, a plurality of through holes are formed in the peripheral edge of the electronic fan, and the electronic fan is fixed in the air guide cover through screws.
A heat dissipation control system for the engine overhead heat sink comprises an air inlet temperature sensor, a water temperature sensor, an engine ECM controller and an electronic fan driving circuit; the intake temperature sensor is arranged on an air outlet pipe of the intercooler, the water temperature sensor is arranged on an water outlet pipe of the water cooler, and the electronic fan driving circuit is connected with the engine ECM controller; when the temperature collected by the water temperature sensor or the air inlet temperature sensor is higher than the set target temperature, the engine ECM controller controls the electronic fan driving circuit, so that the corresponding electronic fan is regulated, and finally the temperature of the water cooler or the intercooler is kept in an ideal range.
An excavator is provided with the heat dissipation control system.
The utility model discloses beneficial effect:
the utility model adopts the technical proposal that the electric drive frequency conversion combined cooling fan and the intercooling radiator and the water cooling radiator are arranged in parallel, thereby saving space, reducing weight and lightening the resonance generated by the engine; more importantly, PWM frequency conversion control is respectively carried out on the working number and the rotating speed of each fan according to the real-time cooling liquid temperature and the intake air temperature of the engine, the system efficiency is greatly improved, and the power loss of the engine is reduced. The traditional excavator adopts a single cooling fan with overlarge area, adopts a plurality of electronic fans with smaller diameters, and effectively reduces noise. In addition, the top of the radiator can solve the problems of the length, the occupied space and the sealing of the air inlet and outlet pipelines and the water inlet and outlet pipelines.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention, are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. It is obvious that the drawings in the following description are only some embodiments, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
In the drawings:
FIG. 1 is a schematic diagram of a conventional hydraulic excavator heat dissipation system;
FIG. 2 is an assembly view of the structure of the present invention;
FIG. 3 is a right side view of the structure of the present invention;
fig. 4 is a top view of the structure of the present invention;
FIG. 5 is a view of the present invention;
FIG. 6 is an isometric view of a mounting bracket;
FIG. 7 is a schematic diagram of an electronic fan control system.
The labels in the figure are: 1. the system comprises a fixed support, 2, a radiator, 3, an air guide cover, 4, an electronic fan, 5, an air inlet pipe, 6, a flow guide chamber, 7, an air outlet pipe, 8, an air inlet pipe, 9, an air outlet pipe, 101, a first chain plate, 102, a connecting plate, 103, a second chain plate, 104, a mounting hole, 201, an intercooler, 202, a water cooler, 10, an air inlet temperature sensor, 11, a water temperature sensor, 12, an engine ECM controller, 13 and an electronic fan driving circuit.
It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but to illustrate the inventive concept by those skilled in the art with reference to specific embodiments.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments, and the following embodiments are used for illustrating the present invention, but do not limit the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 2, 3, 4, and 5, an engine overhead heat sink includes a radiator 2, a wind scooper 3, and an electronic fan 4; the inner part of the radiator 2 is divided into an intercooler 201 and a water cooler 202; the wind scooper 3 is fixed on the top surface of the radiator 2, a plurality of fan openings are formed in the top surface of the wind scooper 3, and an electronic fan 4 is installed in each fan opening; the inlet end and the outlet end of the intercooler 201 are provided with diversion chambers 6, the diversion chamber 6 at the inlet end is connected with an air inlet pipe 5, the diversion chamber 6 at the outlet end is connected with an air outlet pipe 7, the air inlet pipe 5 is connected with an engine turbocharger, the air outlet pipe 7 is connected with an engine combustion chamber, and high-temperature and high-pressure air flow generated by the engine turbocharger enters the intercooler 201 for cooling and then enters the engine combustion chamber through the air outlet pipe 7; the water inlet pipe 8 of the water cooler 202 is connected with the water outlet pipe of the engine, and the water outlet pipe 9 of the water cooler 202 is connected with the water return pipe of the engine.
Further scheme: the radiator 2 is fixed on a covering piece above an engine cylinder cover through a connecting piece.
Specifically, as shown in fig. 6, the connecting member includes a plurality of fixing brackets 1; the fixed bracket 1 comprises a first chain plate 101, a second chain plate 103 and a connecting plate 102; the first chain plate 101 and the second chain plate 103 are connected by a connecting plate 102 to form a Z-shaped structure; the first chain plate 101 is welded at the bottom of the radiator 2; the second chain plate 103 is provided with a plurality of mounting holes 104 and is fixed on the covering member through bolts.
Further scheme: the periphery of the wind scooper 3 is provided with a plurality of through holes, the top surface of the radiator 2 is provided with a plurality of threaded holes, and the wind scooper 3 is fixed on the top surface of the radiator 2 through screws.
The air guide cover 3 positioned at the fan opening is provided with a plurality of threaded holes, the peripheral edge of the electronic fan 4 is provided with a plurality of through holes, and the electronic fan 4 is fixed in the air guide cover 3 through screws.
As shown in fig. 7, a heat dissipation control system based on an engine overhead heat sink includes an intake air temperature sensor 10, a water temperature sensor 11, an engine ECM controller 12, and an electronic fan drive circuit 13; the intake air temperature sensor 10 is arranged on an air outlet pipe 9 of the intercooler 201, the water temperature sensor 11 is arranged on an water outlet pipe 9 of the water cooler 201, and the electronic fan driving circuit 13 is connected with the engine ECM controller 12. As shown in fig. 7, when the temperature collected by the water temperature sensor 11 or the intake air temperature sensor 10 is higher than a set target temperature, the ECM controller 12 controls the corresponding electronic fan driving circuit 13 through CAN bus communication, so as to perform PWM intelligent speed regulation on the corresponding electronic fan 4, and finally, the temperature of the water cooler 202 or the intercooler 201 is maintained within an ideal range. The number of electronic fans operating and the rotational speed are individually controlled by the ECM controller 12 and transmitted to the monitoring instrument through the CAN bus as well as the water temperature and the intake air temperature.
The utility model provides a water-cooling of engine and well cold heat dissipation scheme, hydraulic oil heat dissipation module, diesel oil heat dissipation module, condenser heat dissipation module on the excavator in addition all can select suitable position according to this kind of scheme and arrange in a flexible way.
The utility model adopts the technical proposal that the electric drive frequency conversion combined cooling fan and the intercooling radiator and the water cooling radiator are arranged in parallel, thereby saving space, reducing weight and lightening the resonance generated by the engine; more importantly, PWM frequency conversion control is respectively carried out on the working number and the rotating speed of each fan according to the real-time cooling liquid temperature and the intake air temperature of the engine, the system efficiency is greatly improved, and the power loss of the engine is reduced. The traditional excavator adopts a single cooling fan with overlarge area, adopts a plurality of electronic fans with smaller diameters, and effectively reduces noise. In addition, the top of the radiator can solve the problems of the length, the occupied space and the sealing of the air inlet and outlet pipelines and the water inlet and outlet pipelines.
In the description provided herein, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
Furthermore, those skilled in the art will appreciate that although some embodiments described herein include some features included in other embodiments instead of others, combinations of features of different embodiments are also meant to be within the scope of the invention and form different embodiments. For example, in the above embodiments, those skilled in the art can use the combination according to the known technical solutions and technical problems to be solved by the present application.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and although the present invention has been disclosed with reference to the above preferred embodiment, but not to limit the present invention, any person skilled in the art can make modifications or changes to equivalent embodiments by utilizing the above technical contents without departing from the scope of the present invention, and any simple modification, equivalent change and modification made to the above embodiments by the technical matters of the present invention are within the scope of the present invention.
Claims (7)
1. The utility model provides an engine overhead heat abstractor which characterized in that:
comprises a radiator, an air guide cover and an electronic fan;
the internal partition of the radiator is divided into an intercooler and a water cooler;
the air guide cover is fixed on the top surface of the radiator, a plurality of fan openings are formed in the top surface of the air guide cover, and an electronic fan is installed in each fan opening;
the inlet end and the outlet end of the intercooler are provided with flow guide chambers, the flow guide chamber at the inlet end is connected with an air inlet pipe, the flow guide chamber at the outlet end is connected with an air outlet pipe, the air inlet pipe is connected with an engine turbocharger, and the air outlet pipe is connected with an engine combustion chamber;
the water inlet pipe of the water cooler is connected with the water outlet pipe of the engine, and the water outlet pipe of the water cooler is connected with the water return pipe of the engine.
2. The engine overhead heat sink of claim 1, wherein:
the radiator is fixed on a covering piece above an engine cylinder cover through a connecting piece.
3. The engine overhead heat sink of claim 2, wherein:
the connecting piece comprises a plurality of fixing brackets;
the fixed bracket comprises a first chain plate, a second chain plate and a connecting plate;
the first chain plate and the second chain plate are connected through a connecting plate to form a Z-shaped structure;
the first chain plate is welded at the bottom of the radiator;
and the second chain plate is provided with a plurality of mounting holes and is fixed on the covering part through bolts.
4. The engine overhead heat sink of claim 1, wherein:
the top surface of the radiator is provided with a plurality of threaded holes, and the wind scooper is fixed on the top surface of the radiator through screws.
5. The engine overhead heat sink of claim 1, wherein:
the air guide cover at the position of the fan opening is provided with a plurality of threaded holes, the peripheral edge of the electronic fan is provided with a plurality of through holes, and the electronic fan is fixed in the air guide cover through screws.
6. A heat dissipation control system for the engine overhead heat sink of claim 1, characterized in that:
the heat dissipation control system comprises an air inlet temperature sensor, a water temperature sensor, an engine ECM controller and an electronic fan driving circuit;
the intake temperature sensor is arranged on an air outlet pipe of the intercooler, the water temperature sensor is arranged on an water outlet pipe of the water cooler, and the electronic fan driving circuit is connected with the engine ECM controller;
when the temperature collected by the water temperature sensor or the air inlet temperature sensor is higher than the set target temperature, the engine ECM controller controls the electronic fan driving circuit, so that the corresponding electronic fan is regulated, and finally the temperature of the water cooler or the intercooler is kept in an ideal range.
7. An excavator, characterized in that:
the heat dissipation control system of claim 6 is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021824889.2U CN213016523U (en) | 2020-08-27 | 2020-08-27 | Engine overhead heat abstractor and heat dissipation control system and excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021824889.2U CN213016523U (en) | 2020-08-27 | 2020-08-27 | Engine overhead heat abstractor and heat dissipation control system and excavator |
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| CN213016523U true CN213016523U (en) | 2021-04-20 |
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| CN202021824889.2U Active CN213016523U (en) | 2020-08-27 | 2020-08-27 | Engine overhead heat abstractor and heat dissipation control system and excavator |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114857054A (en) * | 2022-05-30 | 2022-08-05 | 江西清华泰豪三波电机有限公司 | Composite radiator for van-type power station and control method thereof |
| CN115450741A (en) * | 2021-06-09 | 2022-12-09 | 宇通客车股份有限公司 | Vehicle and cooling module assembly thereof |
| US20230280100A1 (en) * | 2022-03-07 | 2023-09-07 | L & M Radiator, Inc. | Radiator Assembly with Multiple Fans |
-
2020
- 2020-08-27 CN CN202021824889.2U patent/CN213016523U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115450741A (en) * | 2021-06-09 | 2022-12-09 | 宇通客车股份有限公司 | Vehicle and cooling module assembly thereof |
| US20230280100A1 (en) * | 2022-03-07 | 2023-09-07 | L & M Radiator, Inc. | Radiator Assembly with Multiple Fans |
| CN114857054A (en) * | 2022-05-30 | 2022-08-05 | 江西清华泰豪三波电机有限公司 | Composite radiator for van-type power station and control method thereof |
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