Excavator and throttling heat dissipation plate device thereof

Abstract

The utility model discloses an excavator and a throttling heat dissipation plate device thereof, the throttling heat dissipation plate device comprises a hollow heat dissipation throttling plate and a condensation unit arranged at the top of the hollow heat dissipation throttling plate, a plurality of phase change fluid pipes are arranged in the hollow heat dissipation throttling plate, and the phase change fluid pipes are filled with phase change fluid in a sealing mode. A plurality of throttling holes are formed between every two adjacent phase change fluid pipes, the throttling holes are formed in the hollow heat dissipation throttling plate in a penetrating mode, the multiple throttling holes are evenly distributed, the diameter of the end, away from the heat dissipation device, of each throttling hole is a first hole diameter, the diameter of the other end of each throttling hole is a second hole diameter, the first hole diameter is larger than the second hole diameter, and the phase change fluid pipes communicate with the condensation units; the phase change fluid pipes are arranged in the hollow heat dissipation throttling plate in a curve mode, the air inlet temperature is reduced through phase change heat transfer of phase change fluid in the phase change fluid pipes, meanwhile, the throttling holes are formed in the hollow heat dissipation throttling plate, a certain aperture difference exists between the two ends of each throttling hole, and therefore the air inlet temperature of the radiator is reduced through the throttling cooling principle.

Description

Technical Field

[0001] The utility model belongs to the technical field of excavator heat dissipation, and in particular relates to an excavator and a throttling heat dissipation plate device thereof. Background Art

[0002] As the main equipment in the field of engineering machinery, hydraulic crawler excavators are widely used in construction, agriculture, municipal administration, mining and other fields. They are an indispensable construction equipment. With the continuous development of domestic and international markets, the market for hydraulic excavators will further recover. During the working process of the excavator, the cooling system is crucial. Whether it is a traditional fuel excavator or a new energy electric excavator, during construction operations, devices such as the engine or motor controller will generate a lot of heat that needs to be dissipated through the cooling system.

[0003] During the design process, the heat required to be dissipated by the engine or motor and its control is usually dissipated through a water-cooled radiator based on theoretical calculations. The heat dissipation capacity of the radiator depends on factors such as the area of ​​the heat dissipation core, the air intake volume and the air intake temperature. In the prior art, the traditional enhanced heat dissipation methods mainly include the following: sticking sealing sponges around the radiator to prevent hot air backflow and optimizing the air guide cover; optimizing fan matching, appropriately increasing the fan speed or fan diameter; using a silicone oil fan. The above methods all start from the rear of the radiator and require changes to the radiator structure or fan arrangement. There is currently no application case for enhanced heat dissipation from the air intake side. In summary, there is an urgent need for a throttling heat dissipation plate device arranged on the air intake side of an excavator. Utility Model Content

[0004] In order to solve some or all of the technical problems existing in the above-mentioned prior art, on one hand, the utility model provides a throttling heat sink device for an excavator, wherein the throttling heat sink device is arranged on the air inlet side of the excavator, and the excavator is provided with a radiator, and the throttling heat sink device for the excavator comprises a hollow heat dissipation throttling plate, and a condensing unit arranged on the top of the hollow heat dissipation throttling plate, wherein:

[0005] A plurality of phase change fluid tubes are arranged in the hollow heat dissipation throttle plate, and the phase change fluid tubes are sealed and filled with phase change fluid. A plurality of throttling holes are arranged between two adjacent phase change fluid tubes, and the throttling holes are opened through the hollow heat dissipation throttle plate. The plurality of throttling holes are evenly distributed, and the diameter of the throttling hole at one end away from the radiator is a first aperture, and the diameter of the other end is a second aperture, and the first aperture is larger than the second aperture, and the phase change fluid tube is connected to the condensing unit.

[0006] Furthermore, in the above-mentioned throttling heat sink device for an excavator, the phase change fluid tube is arranged in a wavy line inside the hollow heat sink throttling plate.

[0007] As a specific embodiment, in the above throttle heat dissipation plate device for an excavator, the condensation unit is a condensation pipe.

[0008] As a specific embodiment, in the above throttle heat dissipation plate device for an excavator, the number of the phase change fluid pipes is 6 to 10.

[0009] As a specific embodiment, in the above throttle heat dissipation plate device for an excavator, the number of the throttle holes is 40 to 60.

[0010] On the other hand, the present utility model also discloses an excavator, which includes the above throttle heat dissipation plate device.

[0011] The excavator and its throttle heat dissipation plate device of the present utility model have the following advantages and beneficial effects:

[0012] This device has a simple structure and is convenient for disassembly and assembly. By arranging the phase change fluid pipes in a curved manner inside the hollow heat dissipation throttle plate, and encapsulating a phase change fluid in the phase change fluid pipes, the phase change heat transfer of the phase change fluid in the phase change fluid pipes is utilized to reduce the inlet air temperature. At the same time, throttle holes are provided on the hollow heat dissipation throttle plate, and there is a certain aperture difference at both ends of the throttle holes, so as to reduce the inlet air temperature of the radiator through the throttle cooling principle. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only for further understanding of the embodiments of the present utility model and constitute a part of the present utility model. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative efforts. In the drawings:

[0014] Figure 1 is a schematic structural diagram of the throttle heat dissipation plate device for an excavator of the present utility model;

[0015] Figure 2 is a schematic structural diagram of the throttle hole in the throttle heat dissipation plate device for an excavator of the present utility model.

[0016] Description of the reference numerals:

[0017] 1 - hollow heat dissipation throttle plate, 2 - condensation unit, 3 - phase change fluid pipe, 4 - throttle hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] To make the objectives, technical solutions and advantages of the present utility model clearer, the technical solutions of the present utility model will be clearly and completely described below in conjunction with specific embodiments of the present utility model and the corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of protection of the present utility model.

[0019] As Figure 1 , Figure 2 shown, on the one hand, the present utility model discloses a throttling heat dissipation plate device for an excavator. The throttling heat dissipation plate device is arranged on the air inlet side of the excavator (not shown in the figure). A radiator (not shown in the figure) is arranged on the excavator. The throttling heat dissipation plate device for the excavator includes a hollow heat dissipation throttling plate 1 and a condensation unit 2 arranged on the top of the hollow heat dissipation throttling plate 1. The hollow heat dissipation throttling plate 1 is arranged in front of the radiator. Among them, a plurality of phase change fluid tubes 3 are arranged in the hollow heat dissipation throttling plate 1. A phase change fluid (not shown in the figure) is hermetically filled in the phase change fluid tubes 3. During the process of manufacturing the phase change fluid tubes 3, this phase change fluid will be encapsulated in the phase change fluid tubes 3. A plurality of throttling holes 4 are arranged between adjacent phase change fluid tubes 3. The throttling holes 4 penetrate through the hollow heat dissipation throttling plate 1 and are in a conical shape as a whole. The plurality of throttling holes 4 are evenly distributed, which ensures uniform heat dissipation of the air. The diameter of one end of the throttling hole 4 away from the radiator is the first aperture, and the diameter of the other end is the second aperture. The first aperture is larger than the second aperture. With such a setting, the throttling cooling principle is utilized. The air on the side with a larger aperture of the throttling hole 4 flows through the throttling hole 4 to the end with a smaller aperture. During this process, the temperature of the air will be reduced by a certain amount. The phase change fluid tubes 3 are connected to the condensation unit 2, and the phase change fluid in the phase change fluid tubes 3 can flow into the condensation unit 2.

[0020] Furthermore, in the throttling heat dissipation plate device for the excavator of the present utility model, the phase change fluid tubes 3 are arranged in a wavy line inside the hollow heat dissipation throttling plate 1. With such a setting, the coverage area of the phase change fluid tubes 3 is increased, and better heat dissipation can be achieved.

[0021] As a specific implementation manner, in the throttling heat dissipation plate device for the excavator of the present utility model, the condensation unit 2 is a condensation pipe. Of course, the condensation unit 2 can also be other condensation devices, as long as it is connected to the phase change fluid tubes 3 and can achieve the condensation effect on the phase change fluid.

[0022] As a specific implementation manner, in the throttling heat dissipation plate device for an excavator of the present utility model, the number of phase change fluid tubes 3 is 6 to 10. More specifically, the number of phase change fluid tubes 3 is 8. Of course, the specific number of phase change fluid tubes 3 should be set according to the specific usage conditions such as the shape and size of the hollow heat dissipation throttling plate 1.

[0023] As a specific implementation manner, in the throttling heat dissipation plate device for an excavator of the present utility model, the number of throttling holes 4 is 40 to 60. More specifically, the number of throttling holes 4 is 42. Of course, the specific number of throttling holes 4 should be set according to the specific usage conditions such as the shape and size of the hollow heat dissipation throttling plate 1.

[0024] On the other hand, the present utility model also discloses an excavator, and the excavator includes the above-mentioned throttling heat dissipation plate device.

[0025] The working principle of the throttling heat dissipation plate device for an excavator of the present utility model is as follows:

[0026] This device is arranged in front of the radiator. The gaseous phase change fluid in the phase change fluid tube 3 becomes a liquid phase change fluid after condensing and dissipating heat through the condensing unit 2 and then flows into the phase change fluid tube 3. When air vertically passes through the hollow heat dissipation throttling plate 1, it exchanges heat with the liquid phase change fluid in the phase change fluid tube 3 arranged in the hollow heat dissipation throttling plate 1, and the temperature of the air thus decreases. The liquid phase change fluid in the phase change fluid tube 3 after absorbing heat evaporates into a gaseous phase change fluid and flows upward into the condensing unit 2 to be condensed into a liquid phase change fluid, and then the above process is repeated for heat dissipation;

[0027] When air vertically passes through the hollow heat dissipation throttling plate 1 with throttling holes 4, according to the principle of throttling temperature reduction, the temperature of the air will decrease after passing through the throttling holes 4, so as to reduce the temperature of the air entering the radiator and achieve the effect of enhancing heat dissipation.

[0028] To sum up, compared with the prior art, the excavator and its throttling heat dissipation plate device of the present utility model have the following advantages and

[0029] beneficial effects:

[0030] This device has a simple structure and is convenient for disassembly and assembly. By arranging the phase change fluid tubes 3 in a curved manner in the hollow heat dissipation throttling plate 1 and encapsulating a phase change fluid in the phase change fluid tubes 3, the phase change heat transfer of the phase change fluid in the phase change fluid tubes 3 is used to reduce the incoming air temperature. At the same time, throttling holes 4 are opened on the hollow heat dissipation throttling plate 1, and there is a certain aperture difference at both ends of the throttling holes 4, so as to reduce the incoming air temperature of the radiator through the principle of throttling temperature reduction.

[0031] It should be noted that in this article, unless otherwise clearly stipulated and defined, the term "connection" or its synonyms should be understood in a broad sense. For example, "connection" can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meaning of the above terms in the present utility model can be understood according to specific circumstances. Moreover, expressions such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. At the same time, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such process, method, article or device. In addition, in this article, "front", "rear", "left", "right", "upper", "lower", etc. are all referenced to the placement state shown in the drawings.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model and are not intended to limit them. Although the present utility model has been described in detail with reference to the embodiments, those skilled in the art should understand that: the technical solutions recorded in the foregoing embodiments can still be modified, or some of the technical features can be equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims

1. A throttle heat dissipation plate device for an excavator, the throttle heat dissipation plate device is arranged on the air inlet side of the excavator, and a radiator is arranged on the excavator, characterized in that, The throttling heat dissipation plate device for an excavator includes a hollow heat dissipation throttling plate and a condensation unit arranged at the top of the hollow heat dissipation throttling plate, wherein: A plurality of phase change fluid tubes are arranged in the hollow heat dissipation throttling plate, and a phase change fluid is hermetically filled in the phase change fluid tubes. A plurality of throttling holes are arranged between two adjacent phase change fluid tubes, and the throttling holes are penetrated and opened on the hollow heat dissipation throttling plate. The plurality of throttling holes are evenly distributed. One end of the throttling hole away from the radiator has a first aperture diameter, and the other end has a second aperture diameter, and the first aperture diameter is greater than the second aperture diameter. The phase change fluid tubes communicate with the condensation unit.

2. The throttling heat dissipation plate device for an excavator according to claim 1, characterized in that, The phase change fluid tubes are arranged in a wavy line inside the hollow heat dissipation throttling plate.

3. The throttling heat dissipation plate device for an excavator according to claim 1, characterized in that, The condensation unit is a condensation pipe.

4. The throttling heat dissipation plate device for an excavator according to claim 1, characterized in that The number of the phase change fluid tubes is 6 to 10.

5. The throttle heat dissipation plate device for an excavator according to claim 1, characterized in that, The number of the throttling holes is 40 to 60.

6. An excavator, characterized in that, The excavator includes the throttling heat dissipation plate device according to any one of claims 1-5.

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