Novel evaporative condensation and gravity assisted heat pipe combined locomotive heat dissipation mechanism

Abstract

The invention relates to the technical field of locomotive heat management, in particular to a novel evaporative condensation and gravity assisted heat pipe compounded locomotive heat dissipation mechanism which comprises a shell serving as a carrier of the whole device, a support is fixedly connected to one side of the shell, and a heat dissipation assembly used for refrigerating the interior of a locomotive is arranged on the shell. The heat dissipation assembly comprises a condenser, a water cooling radiator and an oil cooler which are installed in the shell, an outdoor unit and an evaporator are installed on the support, an inlet and an outlet of the condenser are connected with a first flow guide pipe and a second flow guide pipe respectively, and the first flow guide pipe and the second flow guide pipe are connected with an inlet and an outlet of the evaporator respectively. The first flow guide pipe and the second flow guide pipe are connected with the outdoor unit through backflow pipes respectively. Flowing of refrigerants in the pipeline is achieved through gravity, in the low-temperature environment, the steam compression outdoor unit is closed, needed cooling capacity is provided for the interior of the locomotive through the gravity heat pipe, and efficient and energy-saving operation of a locomotive heat management system is achieved while it is guaranteed that the indoor temperature is appropriate.

Description

Technical Field

[0001] The invention relates to the technical field of locomotive thermal management, and in particular to a novel locomotive heat dissipation mechanism combining evaporative condensation with gravity heat pipes. Background Art

[0002] During the operation of the vehicle, there are many devices that need to dissipate heat inside, including the converter cabinet in the power system, the transformer inside the vehicle body, and the air conditioning system used to maintain a comfortable environment inside the vehicle. Most of these devices rely on the refrigeration system for effective heat dissipation. Common refrigeration systems, such as cooling systems with ethylene glycol solution as the coolant, can effectively reduce the temperature of power components; at the same time, cooling oil is also used to cool important equipment such as transformers. In addition, the refrigerant-dominated cooling management system is responsible for regulating the air environment inside the vehicle body to maintain riding comfort.

[0003] However, there is a great deal of uncertainty in the operating environment of locomotives. The external temperature and humidity change significantly during the alternation of day and night and in different seasons. For example, in summer, when the temperature is high during the day, the demand for cooling inside the locomotive increases; while at night, when the temperature drops, the demand for cooling inside decreases. However, the existing thermal management system has a weak response ability in cooling regulation, which may cause passengers to feel cold when riding at night, which will affect the comfort and experience of passengers on long-distance trips. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention provides a new locomotive heat dissipation mechanism that is a composite of evaporative condensation and gravity heat pipes. It has the advantage of realizing the use of corresponding energy sources at different temperatures through the phase change process of the liquid, and solves the problems of low condenser efficiency in the current locomotive thermal management system, inability to realize the operation of multiple cooling systems on the same device, inability to effectively match the refrigeration system according to the ambient temperature, and high energy consumption.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] A novel locomotive heat dissipation mechanism combining evaporative condensation and gravity heat pipes comprises a shell as a carrier of the entire device, a bracket is fixedly connected to one side of the shell, a heat dissipation component for cooling the interior of the locomotive is provided on the shell, the heat dissipation component comprises a condenser, a water-cooled radiator and an oil cooler respectively installed in the shell, an outdoor unit and an evaporator are installed on the bracket, the inlet and outlet of the condenser are respectively connected to a guide pipe 1 and a guide pipe 2, the guide pipe 1 and the guide pipe 2 are respectively connected to the inlet and outlet of the evaporator, and the guide pipe 1 and the guide pipe 2 are respectively connected to the outdoor unit through a return pipe.

[0007] Preferably, a fan is installed at the air inlet on the shell, and an air outlet is provided on the side of the shell.

[0008] Preferably, a water reservoir is provided at the bottom of the outer shell, a water pump is fixedly installed on the outer shell, the water pump and the water reservoir are connected by a pipeline, the water outlet of the water pump is connected to a water pipe, the end of the water pipe is fixedly connected to a diversion pipe located in the outer shell, and a plurality of nozzles are fixedly connected to the diversion pipe.

[0009] Preferably, a frame is fixedly connected to the top of the shell, and both side walls inside the shell are fixedly connected to flow guide frames connected to the frame, and a plurality of air supply pipes connected to the flow guide frame are fixedly connected to the flow guide frame.

[0010] Preferably, the air supply pipes on both sides of the shell are arranged at an angle, and the air supply pipes on both sides are symmetrically distributed.

[0011] Preferably, a tank body is also installed on the shell, and the tank body and the guide pipe 1 are connected through a pipeline, and an electric valve for controlling the addition of liquid refrigerant is provided on the pipeline.

[0012] Preferably, the condenser, evaporator, oil cooler and water radiator are all fin-tube heat exchangers, and the heat exchanger and its pipes are made of red copper material, which is commonly used in making.

[0013] Preferably, the housing is provided with a mounting groove corresponding to the fan, which is used to guide wind into the guide frame for circulation.

[0014] By means of the above technical solution, the present invention provides a new locomotive heat dissipation mechanism combining evaporative condensation and gravity heat pipe, which has at least the following beneficial effects:

[0015] 1. The thermal management system uses gravity heat pipes to realize the flow of refrigerant inside the pipes. In low-temperature environments, the steam compression outdoor unit is turned off and the gravity heat pipes are used to provide the required cooling capacity for the locomotive room, thereby ensuring the appropriate indoor temperature and achieving high efficiency and energy saving in the operation of the locomotive thermal management system.

[0016] 2. The thermal management system includes three system condensers, and adopts a composite cooling method of air cooling and water cooling to achieve high integration of multiple systems of the equipment. With the help of a water circulation spray system, the heat dissipation of the condensers of the three cooling systems is guaranteed. Compared with traditional locomotive cooling towers, the system integration is improved, and the cooling performance of the composite locomotive thermal management system is also improved.

[0017] 3. Flexible use and wide application scenarios. The system uses the gravity heat pipe to achieve the flow of refrigerant by gravity, and can be more widely used in various locomotives. In all types of locomotives, it can ensure that the indoor temperature and humidity are within the comfortable range for indoor personnel while achieving the energy-saving effect of the system.

[0018] 4. This composite system is suitable for various refrigerants, and both the oil cooling system and the water cooling system can meet the heat dissipation requirements of different equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application:

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention in the front view direction;

[0021] Figure 2 It is a cross-sectional view of the present invention;

[0022] Figure 3 It is a structural schematic diagram of the heat dissipation assembly of the present invention;

[0023] Figure 4 It is a schematic diagram of the external connection structure of the condenser of the present invention.

[0024] Reference numerals:

[0025] 100. housing; 101. bracket;

[0026] 200, heat dissipation assembly; 201, condenser; 202, water-cooled radiator; 203, oil cooler; 204, fan; 205, water pump; 206, water reservoir; 207, outdoor unit; 208, evaporator; 209, guide pipe 1; 210, guide pipe 2; 211, return pipe; 212, water pipe; 213, diversion pipe; 214, nozzle; 215, frame; 216, guide frame; 217, air supply pipe; 218, tank; 219, electric valve. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments 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 creative work are within the scope of protection of the present invention.

[0028] A novel locomotive heat dissipation mechanism combining evaporative condensation and gravity heat pipes provided by some embodiments of the present invention will be described below in conjunction with the accompanying drawings.

[0029] Embodiment 1:

[0030] Combination Figure 1 and Figure 2As shown, a novel locomotive heat dissipation mechanism combining evaporative condensation and gravity heat pipe provided by the present invention includes a shell 100 as a carrier of the entire device, a bracket 101 is fixedly connected to one side of the shell 100, and a heat dissipation component 200 for cooling the interior of the locomotive is provided on the shell 100. The system can intelligently adjust the working mode according to the load conditions, thereby improving the adaptability of the system, and a good cooling effect can be obtained regardless of low load or high load.

[0031] The heat dissipation assembly 200 includes a condenser 201, a water-cooled radiator 202 and an oil cooler 203 which are respectively installed in the outer shell 100. An outdoor unit 207 and an evaporator 208 are installed on the bracket 101. The inlet and outlet of the condenser 201 are respectively connected to a guide pipe 1 209 and a guide pipe 2 210. The guide pipe 1 209 and the guide pipe 2 210 are respectively connected to the inlet and outlet of the evaporator 208. The guide pipe 1 209 and the guide pipe 2 210 are respectively connected to the outdoor unit 207 through a return pipe 211. Gravity is used to realize the flow of refrigerant inside the pipeline. In a low temperature environment, by closing the steam compression outdoor unit 207, the gravity heat pipe is used to provide the required cooling capacity for the locomotive room, thereby ensuring that the indoor temperature is suitable while achieving high efficiency and energy saving in the operation of the locomotive thermal management system.

[0032] Specifically, a fan 204 is installed at the air inlet on the shell 100, and an air outlet is provided on the side of the shell 100. The fan blows air into the system to realize the airflow flowing to the lower air outlet, passing through the water spray pipe 212, the refrigerant condenser 201, the water radiator, and the oil cooler 203 from top to bottom to perform air cooling.

[0033] According to the embodiment, under low load conditions, using gravity to drive the circulation of refrigerant can reduce the demand for the outdoor unit 207, thereby saving electricity and improving the energy efficiency ratio (EER) of the system, which can reduce energy consumption and reduce operating costs under low load conditions.

[0034] Embodiment 2:

[0035] Combination Figure 2 and Figure 3 As shown, on the basis of the first embodiment, a water reservoir 206 is provided at the bottom of the outer shell 100, a water pump 205 is fixedly installed on the outer shell 100, the water pump 205 and the water reservoir 206 are connected by a pipeline, the water outlet of the water pump 205 is connected to a water pipe 212, the end of the water pipe 212 is fixedly connected to a diversion pipe 213 located in the outer shell 100, a plurality of nozzles 214 are fixedly connected to the diversion pipe 213, the water pump 205 guides the water in the water reservoir 206 into the diversion pipe 213 through the water pipe 212, and then sprays water mist downward through the nozzle 214, so as to further improve the cooling effect.

[0036] Specifically, a frame 215 is fixedly connected to the top of the housing 100 , and both side walls inside the housing 100 are fixedly connected to flow guide frames 216 connected to the frame 215 . The flow guide frames 216 are fixedly connected to a plurality of air supply pipes 217 connected thereto.

[0037] Furthermore, the air supply pipes 217 on both sides of the housing 100 are arranged at an angle, and the air supply pipes 217 on both sides are symmetrically distributed.

[0038] According to the embodiment, the composite cooling method of air cooling and water cooling is adopted to achieve high integration of multiple systems of the equipment. With the help of the water circulation spray system, the heat dissipation of the condenser 201 of the three cooling systems is guaranteed. Compared with the traditional locomotive cooling tower, the system integration is improved, and the cooling performance of the composite locomotive thermal management system is also improved.

[0039] Embodiment three:

[0040] Combination Figure 2 As shown, on the basis of the first embodiment, a tank body 218 is further installed on the shell 100, and the tank body 218 and the guide tube 209 are connected by a pipeline. The pipeline is provided with an electric valve 219 for controlling the addition of liquid refrigerant. Due to the continuous conversion of the refrigerant between liquid and gaseous states, as well as problems such as sealing, the refrigerant will be continuously consumed. When the refrigerant is not enough to meet the current cooling effect, the electric valve 219 is opened to inject liquid refrigerant into the guide tube 209 to ensure the cooling effect.

[0041] Specifically, the condenser 201, the evaporator 208, the oil cooler 203, and the water radiator are all fin-tube heat exchangers, and the heat exchanger and its pipes are made of red copper material, which is commonly used in manufacturing.

[0042] Furthermore, the housing 100 is provided with a mounting groove corresponding to the fan 204 for guiding wind into the guide frame 216 for circulation.

[0043] It can be seen from the above embodiments that for the refrigerant circulation system, when the load is low, the refrigerant only circulates between the evaporator 208 and the inside of the system, and is powered by gravity, that is, the liquid refrigerant absorbs heat in the evaporator 208 and evaporates into gas, and under the action of density difference, flows to the condenser 201 located at the upper part of the frame, and the refrigerant releases heat and liquefies in the condenser 201, and under the action of gravity, flows back to the external evaporator 208 located at the lower part of the frame. When the load is high, the refrigerant only circulates between the evaporator 208 and the outdoor unit 207, and is powered by the compressor of the outdoor unit 207. The outdoor unit 207 can refer to the common vapor compression condensation method.

[0044] It should be noted that the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0045] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A novel locomotive heat dissipation mechanism combining evaporative condensation and gravity heat pipe, comprising a housing (100) as a carrier of the entire device, characterized in that: A bracket (101) is fixedly connected to one side of the shell (100), and a heat dissipation component (200) for cooling the interior of the locomotive is provided on the shell (100); The heat dissipation component (200) comprises a condenser (201), a water-cooled radiator (202) and an oil cooler (203) which are respectively installed in the housing (100); an outdoor unit (207) and an evaporator (208) are installed on the bracket (101); the inlet and outlet of the condenser (201) are respectively connected to a guide pipe 1 (209) and a guide pipe 2 (210); the guide pipe 1 (209) and the guide pipe 2 (210) are respectively connected to the inlet and outlet of the evaporator (208); the guide pipe 1 (209) and the guide pipe 2 (210) are respectively connected to the outdoor unit (207) through a return pipe (211).

2. The novel locomotive heat dissipation mechanism combining evaporative condensation and gravity heat pipe according to claim 1 is characterized in that: A fan (204) is installed at the air inlet of the housing (100), and an air outlet is provided on the side of the housing (100).

3. The novel locomotive heat dissipation mechanism combining evaporative condensation and gravity heat pipe according to claim 1 is characterized in that: A water reservoir (206) is provided at the bottom of the housing (100), a water pump (205) is fixedly mounted on the housing (100), the water pump (205) and the water reservoir (206) are connected via a pipeline, the water outlet of the water pump (205) is connected to a water pipe (212), the end of the water pipe (212) is fixedly connected to a diversion pipe (213) located in the housing (100), and a plurality of nozzles (214) are fixedly connected to the diversion pipe (213).

4. The novel locomotive heat dissipation mechanism combining evaporative condensation and gravity heat pipe according to claim 1 is characterized in that: A frame body (215) is fixedly connected to the top of the outer shell (100), and both side walls inside the outer shell (100) are fixedly connected to flow guide frames (216) connected to the frame body (215), and a plurality of air supply pipes (217) connected to the flow guide frames (216) are fixedly connected to the flow guide frames (216).

5. The novel locomotive heat dissipation mechanism combining evaporative condensation and gravity heat pipe according to claim 1 is characterized in that: The air supply pipes (217) on both sides of the housing (100) are both arranged at an angle, and the air supply pipes (217) on both sides are symmetrically distributed.

6. The novel locomotive heat dissipation mechanism combining evaporative condensation and gravity heat pipe according to claim 1 is characterized in that: A tank body (218) is also installed on the shell (100), and the tank body (218) and the guide pipe 1 (209) are connected through a pipeline, and an electric valve (219) for controlling the addition of liquid refrigerant is provided on the pipeline.

7. The novel locomotive heat dissipation mechanism combining evaporative condensation and gravity heat pipe according to claim 1 is characterized in that: The condenser (201), evaporator (208), oil cooler (203), and water radiator are all fin-tube heat exchangers. The heat exchanger and its pipelines are made of red copper material, which is commonly used for manufacturing.

8. The novel locomotive heat dissipation mechanism combining evaporative condensation and gravity heat pipe according to claim 1 is characterized in that: The housing (100) is provided with a mounting groove corresponding to the fan (204) for guiding wind into the guide frame (216) for circulation.

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