A circulating cooling device for braking medium

Abstract

The present invention proposes a circulating cooling device for braking fluid, including a heat dissipation component, a wind shield, an air compressor and a braking system. The wind shield includes a cover body and a connecting pipe, an air duct is opened in the middle of the cover body, a cavity is arranged in the cover body, an inlet and an outlet are respectively arranged on the cover body, the connecting pipe is arranged in the cavity, and the two ends of the connecting pipe are respectively connected to the inlet and the outlet; the air compressor is connected to the inlet, and the air compressor conveys the braking fluid to the braking system through the connecting pipe; the braking system is connected to the outlet; wherein, the cold air blown out by the heat dissipation component to the air duct exchanges heat with the braking fluid conveyed into the connecting pipe by the air compressor; the braking fluid conveyed by the air compressor flows through the inside of the wind shield, so that the braking fluid can exchange heat with the cold air blown out by the heat dissipation component, thereby making innovative use of the wind shield, and being able to quickly and efficiently cool the braking fluid, thereby integrating the heat dissipation function of the serpentine pipe of the braking system.

Description

Technical Field

[0001] The present invention relates to the technical field of brakes, and in particular to a circulating cooling device for brake fluid. Background Art

[0002] At present, large vehicles generally use pneumatic braking systems to achieve braking. The principle is to generate a large amount of high-pressure gas through an air compressor and input the high-pressure gas into the braking system to complete the braking operation.

[0003] However, when the air compressor inputs high-pressure gas into the brake system, the temperature of the high-pressure gas is extremely high. Under normal circumstances, the high-pressure gas temperature is generally in the range of 170-180 degrees Celsius, and under high load conditions, it can even reach 200 degrees Celsius. The temperature output to the brake system is required to be no more than 50 degrees Celsius in summer and above 0 degrees Celsius in winter. Therefore, if the high-pressure gas is directly introduced into the brake system, on the one hand, the high temperature will have an adverse effect on the various components within the brake system, and may even cause damage to the components. On the other hand, the high-temperature gas will gradually cool down during the flow, and the pressure of the high-pressure gas will gradually decrease, which may cause the brake operation to fail due to low pressure. Therefore, when the high-pressure gas enters the brake system, it first passes through the oil-water separator to remove any impurities that may remain in the gas. Then it passes through the serpentine to cool the high-pressure gas, quickly reducing its temperature to an appropriate temperature, and finally it is transported to the gas storage tank for standby use.

[0004] However, technicians have found that in actual situations, the cooling effect of the serpentine tube is poor, and it is difficult to achieve effective and rapid cooling of the high-pressure gas. The serpentine tube with better effect is not only expensive and difficult to arrange, but also needs to be customized for different vehicles. Summary of the Invention

[0005] In view of this, the present invention proposes a circulating cooling device for brake fluid, which has low layout difficulty, can integrate the function of the serpentine pipe of the brake cooling system, and greatly improves the heat dissipation effect and efficiency.

[0006] The technical solution of the present invention is achieved as follows: the present invention provides a circulating cooling device for braking fluid, comprising a heat dissipation component with a cold air outlet, and also comprising a wind shield, an air compressor and a braking system; the wind shield is arranged on the side of the heat dissipation component with the cold air outlet, the wind shield comprises a cover body and a connecting pipe, an air duct is opened in the middle of the cover body, and both ends of the air duct pass through both sides of the cover body extending in the axial direction, the heat dissipation component is used to blow cold air to the air duct, a cavity is arranged in the cover body, an inlet and an outlet are respectively arranged on the cover body, the connecting pipe is arranged in the cavity, and both ends of the connecting pipe are connected to the inlet and the outlet respectively; the air compressor is connected to the inlet, and the air compressor conveys braking fluid to the braking system through the connecting pipe; the braking system is connected to the outlet; wherein, the cold air blown out by the heat dissipation component to the air duct is heat-exchanged with the braking fluid sent into the connecting pipe by the air compressor.

[0007] On the basis of the above technical solution, preferably, the cavity is arranged inside the position of the cover body surrounding the air duct outline.

[0008] On the basis of the above technical solution, preferably, the outer wall of the communicating duct close to the air duct abuts against the inner wall of the cavity.

[0009] More preferably, the outer peripheral walls of the communicating pipes are in contact with the inner walls of the cavity.

[0010] More preferably, a heat exchange structure is provided in the gap between the communicating pipe and the inner wall of the cavity, and the heat exchange structure is used to increase the contact area between the braking medium and the inner surface of the communicating pipe, and to increase the contact area between the communicating pipe and the internal environment of the cavity.

[0011] More preferably, the heat exchange structure includes a plurality of convex teeth, each convex tooth is arranged on the inner wall of the cavity and / or the communicating pipe, adjacent convex teeth are alternately arranged on adjacent wall surfaces, and the plurality of convex teeth are arranged at intervals.

[0012] On the basis of the above technical solution, preferably, the wind shield also includes an air gathering component, which is arranged in the shield body. The air gathering component is spaced apart from the shield body and forms a channel with the inner wall of the air duct. The channel is used to gather the cold air blowing toward the inner wall of the air duct and extend the flow distance of the cold air along the inner wall of the air duct.

[0013] More preferably, the wind gathering assembly includes a ring body and several partitions. The ring body is arranged in the cover body and spaced apart from the cover body. The partitions are spaced apart between the ring body and the cover body. Adjacent partitions, the inner wall of the air duct and the outer wall of the ring body are combined to form several channels, and the channels are connected to the air duct.

[0014] More preferably, the inner diameter of the radial section of the end of the ring body facing the heat dissipation component is smaller than the inner diameter of the radial section of the end of the ring body away from the heat dissipation component.

[0015] More preferably, the radial cross section of the ring body is a regular polygon or a circle.

[0016] The circulating cooling device for brake fluid of the present invention has the following beneficial effects compared with the prior art:

[0017] (1) The present invention allows the brake fluid delivered by the air compressor to flow through the interior of the wind shield, so that the brake fluid can exchange heat with the cold air blown out by the heat dissipation component, thereby making innovative use of the wind shield and being able to quickly and efficiently cool the brake fluid, thereby integrating the heat dissipation function of the brake system serpentine pipe.

[0018] (2) Heat dissipation teeth are provided on the inner walls of the cavity and the connecting pipe, and the connecting pipe is provided to form a maze structure in the cavity, which can increase the contact area between the brake fluid and the wind shield and prolong the contact time, thereby improving the heat dissipation effect and efficiency.

[0019] (3) An air gathering component is provided in the air duct of the wind shield so that the cold air can be gathered and flow through the channel formed between the air gathering component and the inner wall of the air duct, thereby improving the heat exchange effect between the cold air and the brake working fluid in the flow channel. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 It is a side view of the circulating cooling device of the present invention;

[0022] Figure 2 A perspective view of the wind shield of the present invention;

[0023] Figure 3 A partial front cross-sectional view of the inlet and outlet of the cover body of the present invention;

[0024] Figure 4 A partial side cross-sectional view of a first embodiment of a cover body of the present invention;

[0025] Figure 5 A partial side cross-sectional view of the inlet and outlet of the cover body of the present invention;

[0026] Figure 6 A partial side cross-sectional view of a second embodiment of a cover body of the present invention;

[0027] Figure 7 is an axial cross-sectional view of a third embodiment of the cover of the present invention;

[0028] Figure 8 is a partial side sectional view of a fourth embodiment of the cover body of the present invention;

[0029] Figure 9 It is a front view of a fourth embodiment of the cover body of the present invention;

[0030] Figure 10 It is a front view of a fifth embodiment of the cover body of the present invention.

[0031] In the figure: 1. Heat dissipation component; 11. Cold air outlet; 2. Wind shield; 21. Cover body; 211. Cavity; 212. Inlet; 213. Outlet; 22. Air duct; 23. Heat exchange structure; 24. Wind gathering component; 241. Ring body; 242. Partition; 25. Channel; 26. Connecting pipe; 3. Air compressor; 4. Braking system. DETAILED DESCRIPTION

[0032] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] First, it should be noted that the braking systems of large vehicles currently generally use pneumatic braking. This involves compressing air through an air compressor to generate high-pressure gas, which is then purified through devices such as oil-water separators before being delivered to the brake system for braking operations. However, automotive industry standards such as the "Technical Requirements for Automotive Air Compressors," developed by the China National Automotive Industry Corporation and others, clearly state that the high-pressure gas discharged by an air compressor has an extremely high temperature, with the exhaust temperature of air compressors of varying power levels generally around 200 degrees Celsius. To address this issue, conventional technology involves cooling the high-pressure air through a serpentine pipe before it is fed into the brake system. The air is then passed through devices such as oil-water separators to remove impurities and moisture before being delivered to a gas tank for storage.

[0034] The larger the coil, the better its cooling effect on high-pressure air. However, due to objective factors such as vehicle structural design, the coil's volume and installation location are often strictly limited, resulting in unsatisfactory cooling performance and efficiency. Generally speaking, technicians will try to improve the coil's principle or structure to enhance its cooling effect. However, this inevitably leads to changes in the coil's volume and structure, and also requires modification of the coil's installation location to adapt it to the application.

[0035] However, after long-term research and observation, the inventors discovered that the air guide ring of the automobile can be used to achieve the purpose of efficiently cooling the high-pressure and high-temperature gas.

[0036] The car's air deflector, also known as the wind shield, is a part of the car's radiator assembly. The car's radiator assembly is installed in front of the engine in the front of the car. The wind shield is located between the radiator and the front exhaust filter, and is used to gather the airflow discharged by the radiator fan and allow the airflow to flow through the filter and be discharged out of the front of the car. The applicant has discovered that the function of the car's radiator assembly is only to dissipate heat for the engine, and a large part of its efficiency is actually wasted; at the same time, the car's radiator assembly is relatively close to the installation position of the vehicle air compressor, and the brake system is also mainly set in the front of the car. Therefore, the inventor began to think about whether it is possible to effectively utilize this part of the efficiency wasted by the radiator assembly, so as to solve the technical problem of cooling the high-pressure and high-temperature gas discharged by the air compressor.

[0037] Based on the above purpose, the inventors have designed a circulating cooling device for brake working fluid.

[0038] like Figure 1 As shown, combined Figure 2 A circulating cooling device for a brake working medium of the present invention includes a heat dissipation component 1 having a cold air outlet 11, a wind shield 2, an air compressor 3 and a brake system 4.

[0039] The wind shield 2 is arranged on a side of the heat dissipation component 1 having the cold air outlet 11 , that is, the wind shield 2 is arranged at a conventional installation position of the radiator assembly.

[0040] However, unlike conventional vehicle wind shields, the wind shield 2 of the present invention includes a shield body 21 and a connecting pipe 26. An air duct 22 is opened in the middle of the shield body 21, and both ends of the air duct 22 pass through both sides of the shield body 21 extending in the axial direction. The heat dissipation component 1 is used to blow cold air to the air duct 22. A cavity 211 is set in the shield body 21, and an inlet 212 and an outlet 213 are respectively set on the shield body 21. The connecting pipe 26 is set in the cavity 211, and the two ends of the connecting pipe 26 are connected to the inlet 212 and the outlet 213 respectively; thereby, the braking medium can flow through the wind shield 2.

[0041] The air compressor 3 is communicated with the inlet 212, and the air compressor 3 delivers the brake working fluid to the brake system 4 through the communication pipe 26. The air compressor 3 can be an air compressor or an oil pump for delivering brake oil.

[0042] The brake system 4 is connected to the outlet 213, and the brake fluid enters the brake system 4 from the outlet 213 to take effect. It should be noted that the conventional brake system 4 has both pneumatic and hydraulic braking modes, so the brake fluid can be high-pressure air or high-pressure oil. However, the similarity between them is that when the brake fluid is compressed under high pressure, it generally reaches an extremely high temperature. Therefore, it needs to be cooled when it is delivered to the brake system 4.

[0043] When the above technical solution is adopted, the cold air blown out by the heat dissipation component 1 to the air duct 22 exchanges heat with the brake working fluid sent into the connecting pipe 26 by the air compressor 3, so that the heat of the brake working fluid is transferred through the cover 21 to the cold air flowing through the air duct 22 for absorption, and finally discharged outside the vehicle, thereby achieving cooling of the brake working fluid.

[0044] Furthermore, preferably, the cavity 211 is arranged inside the cover body 21 at a position surrounding the outline of the air duct 22; therefore, the connecting pipe 26 is also arranged around the air duct 22, and the braking medium will surround the air duct 22 and exchange heat with the cold air. Compared with the serpentine tube, the heat exchange time is longer and the heat exchange contact area is also larger.

[0045] The inventors have found that in order for the brake fluid to effectively exchange heat with the cold air, it is necessary to at least ensure that the connecting pipe 26 through which the brake fluid flows is as close as possible to the air duct 22. Therefore, the first embodiment of the present invention is achieved by the following means.

[0046] like Figure 1 As shown, combined Figure 3 、 Figure 4 and Figure 5 The outer wall of the communication pipe 26 close to the air duct 22 abuts against the inner wall of the cavity 211, so that the internal environment of the communication pipe 26 and the internal environment of the air duct 22 are close to each other.

[0047] In addition, it is also preferred that the outer peripheral wall of the communicating pipe 26 abuts against the inner wall of the cavity 211 so that the communicating pipe 26 fills the entire cavity 211, which can increase the unit flow rate of the brake working fluid and thus improve the cooling efficiency.

[0048] Based on the first embodiment, in order to improve the efficiency of heat exchange, the second and third embodiments of the present invention are implemented through the following means.

[0049] like Figure 1 As shown, combined Figure 6 and Figure 7 A heat exchange structure 23 is set in the gap between the connecting pipe 26 and the inner wall of the cavity 211. The heat exchange structure 23 is used to increase the contact area between the braking medium and the inner surface of the connecting pipe 26, and to increase the contact area between the connecting pipe 26 and the internal environment of the cavity 211.

[0050] The difference between the third embodiment and the second embodiment is that a two-cavity structure is adopted in the cover body 21. On the one hand, the cross-sectional area of ​​the connecting pipe 26 is larger, and the area of ​​the close contact surface with the air duct 22 is also larger, so the heat dissipation effect is better. On the other hand, the cavity 211 can also play a good supporting effect, thereby improving the utilization rate of the internal space of the cover body 21.

[0051] Specifically, heat exchange structure 23 comprises several protruding teeth, each located on the inner wall of cavity 211 and / or connecting pipe 26. Adjacent protruding teeth are alternately positioned on adjacent walls, with the protruding teeth spaced apart. This creates a labyrinthine environment within cavity 211 and connecting pipe 26, extending the time the brake fluid spends flowing through connecting pipe 26 and the time it undergoes heat exchange, thereby improving heat dissipation and cooling. This also facilitates program-controlled flow cross-sections, and allows for switching between three or two compressed air circulation chambers using a solenoid valve.

[0052] It should be noted that since the brake fluid is first input into the air storage pipe for storage before being delivered to the brake system 4, the extended time for the brake fluid to flow through the connecting pipe 26 for heat exchange will not have an adverse effect on the immediate braking effectiveness of the brake system 4.

[0053] However, the inventors discovered that due to the extremely large inner diameter of the air duct 22 and the limited axial length of the wind shield 2, the time during which the cold air passing through the air duct 22 contacts the inner circumferential surface of the wind shield 2 is actually very short, making it difficult for the brake fluid to be fully and effectively cooled. Based on these reasons, the inventors designed a fourth embodiment.

[0054] like Figure 1 As shown, combined Figure 7 and Figure 8 The wind shield 2 also includes a wind gathering component 24, which is arranged in the cover body 21. The wind gathering component 24 is spaced apart from the cover body 21 and forms a channel 25 with the inner wall of the air duct 22. The channel 25 is used to gather the cold air blowing toward the inner wall of the air duct 22 and extend the flow distance of the cold air along the inner wall of the air duct 22.

[0055] Specifically, the air gathering assembly 24 includes a ring body 241 and a plurality of partitions 242. The ring body 241 is disposed within the housing 21 and spaced apart from the housing 21. The partitions 242 are spaced apart between the ring body 241 and the housing 21. Adjacent partitions 242, the inner wall of the air duct 22, and the outer peripheral wall of the ring body 241 define a plurality of channels 25, which are in communication with the air duct 22. The purpose of this design is to utilize the entire amount of cold air flowing through the air duct 22, i.e., the present invention should not hinder the exhaust of hot air generated by the engine from the wind shield 2. However, the present invention can still fully utilize the cold air that contacts the inner peripheral wall of the housing 21. By providing the air gathering assembly 24, the cold air that contacts the inner peripheral wall of the housing 21 is subjected to increased pressure when passing through the channels 25, thereby improving the heat exchange effect of the cold air and allowing the cold air to be discharged along the channels 25, thereby extending the contact time between the cold air and the inner peripheral wall of the housing 21 and preventing it from spreading freely.

[0056] Among them, the inner diameter of the radial section of the ring body 241 toward the heat dissipation component 1 is smaller than the inner diameter of the radial section of the ring body 241 away from the heat dissipation component 1, so that the radial section of the interval between the ring body 241 and the cover body 21 is trapezoidal, thereby having the effect of gathering wind and enhancing wind pressure.

[0057] Furthermore, the radial cross-section of the ring body 241 is circular.

[0058] As a fifth embodiment, Figure 1 As shown, combined Figure 9 The radial cross section of the ring body 241 can also be a regular polygon.

[0059] Working principle:

[0060] Braking fluid is delivered by air compressor 3 through inlet 212 to communication pipe 26. Communication pipe 26 then exchanges heat with the braking fluid and transfers the heat to housing 21. Cool air from heat sink 1 flows through air duct 22, removing the heat. Simultaneously, utilizing the heat from the engine, the compressed air temperature remains above zero degrees Celsius, even in winter.

[0061] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A circulating cooling device for a brake working medium, comprising a heat dissipation component (1) having a cold air outlet (11), characterized in that: It also includes a wind shield (2), an air compressor (3) and a braking system (4); The wind shield (2) is arranged on a side of the heat dissipation component (1) having a cold air outlet (11), and the wind shield (2) comprises a shield body (21), a wind gathering component (24) and a connecting pipe (26). An air duct (22) is provided in the middle of the shield body (21), and both ends of the air duct (22) pass through both sides of the shield body (21) extending in the axial direction. The heat dissipation component (1) is used to blow cold air toward the air duct (22), and a cavity (211) is provided in the shield body (21). The cavity (211) is arranged inside the cover (21) at a position surrounding the outline of the air duct (22); the cover (21) is provided with an inlet (212) and an outlet (213), respectively; the communication pipe (26) is arranged in the cavity (211); the two ends of the communication pipe (26) are connected to the inlet (212) and the outlet (213), respectively; the outer wall of the communication pipe (26) close to the air duct (22) is in contact with the inner wall of the cavity (211); The air compressor (3) is in communication with the inlet (212), and the air compressor (3) delivers a brake fluid to the brake system (4) through a communication pipe (26); the brake system (4) is in communication with the outlet (213); The cold air blown out from the heat dissipation component (1) to the air duct (22) is heat-exchanged with the brake fluid sent into the communicating pipe (26) by the air compressor (3); The wind gathering component (24) is arranged in the cover body (21), the wind gathering component (24) is spaced apart from the cover body (21) and forms a channel (25) with the inner wall of the air duct (22), and the channel (25) is used to gather the cold air blowing toward the inner wall of the air duct (22) and extend the flow distance of the cold air along the inner wall of the air duct (22); The wind gathering component (24) includes a ring body (241) and a plurality of partitions (242). The ring body (241) is arranged in the cover body (21) and is spaced apart from the cover body (21). The partitions (242) are spaced apart between the ring body (241) and the cover body (21). Adjacent partitions (242) are combined with the inner wall of the air duct (22) and the outer peripheral wall of the ring body (241) to form a plurality of channels (25). The channels (25) are connected to the air duct (22). The inner diameter of the radial section of the ring body (241) at one end facing the heat dissipation component (1) is smaller than the inner diameter of the radial section of the ring body (241) at one end away from the heat dissipation component (1).

2. A circulating cooling device for brake fluid according to claim 1, characterized in that: The outer peripheral walls of the communicating pipe (26) are in contact with the inner wall of the cavity (211).

3. The circulating cooling device for brake fluid according to claim 1, characterized in that: A heat exchange structure (23) is provided in the interval between the communicating pipe (26) and the inner wall of the cavity (211), and the heat exchange structure (23) is used to increase the contact area between the brake working medium and the inner surface of the communicating pipe (26), and to increase the contact area between the communicating pipe (26) and the internal environment of the cavity (211).

4. A circulating cooling device for brake fluid according to claim 3, characterized in that: The heat exchange structure (23) comprises a plurality of convex teeth, each of the convex teeth being arranged on the inner wall of the cavity (211) and / or the connecting pipe (26), adjacent convex teeth being alternately arranged on adjacent wall surfaces, and a plurality of the convex teeth being arranged at intervals.

5. The circulating cooling device for brake fluid according to claim 1, characterized in that: The radial cross section of the ring body (241) is a regular polygon or a circle.

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