Air conditioner unit heat dissipation air duct structure and diesel locomotive

Abstract

The utility model provides a kind of air conditioning unit heat dissipation air duct structure, including with driver room's air supply cavity and being arranged in the new fan of the air supply cavity, frequency conversion box and heat dissipation air duct, the frequency conversion box is arranged between the new fan and heat dissipation air duct, the air inlet of the heat dissipation air duct is arranged on the any side wall of the fan cavity, air outlet end is towards the frequency conversion box, the frequency conversion box is provided with the ventilation grille for the new air in and out of heat dissipation air duct.The utility model further provides a kind of diesel locomotive.The utility model provides a kind of air conditioning unit heat dissipation air duct structure and diesel locomotive, air conditioning unit is installed in the inside of diesel locomotive, exchanges with indoor air by heat dissipation air duct, ensure the heat dissipation effect of frequency conversion box;Solve the air conditioner shutdown problem caused by the failure of booster plate due to high temperature of frequency conversion box under high temperature environment.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning unit technology, and in particular to an air conditioning unit heat dissipation duct and an internal combustion locomotive using the structure. Background Technology

[0002] In existing technology, the air conditioning units of diesel locomotives are usually equipped with frequency converters to achieve precise regulation. The frequency converter is installed in the frequency converter box along with other heat-generating components (such as the booster plate). However, due to the high ambient temperature inside the locomotive, the temperature inside the frequency converter box is prone to rise, leading to booster plate failure and subsequently causing the air conditioning to shut down.

[0003] In existing technologies, such as the Dongfeng 11 flat-top diesel locomotive, the inverter box is located inside the locomotive. Due to the high ambient temperature inside the locomotive, the internal temperature of the inverter box can easily rise when the air conditioner is running in a high-temperature environment, leading to a fault in the booster board and subsequently causing the air conditioner to shut down. The inverter box has limited heat dissipation performance in high-temperature environments and cannot effectively solve the problem of excessively high internal temperature. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a heat dissipation duct structure for an air conditioning unit and an internal combustion locomotive, which effectively solves the heat dissipation problem of the inverter box.

[0005] To solve the above-mentioned technical problems, this utility model first provides a heat dissipation air duct structure for an air conditioning unit, adopting the following technical solution:

[0006] An air conditioning unit heat dissipation duct structure includes an air supply cavity communicating with the driver's cab, a fresh air fan, a frequency converter box, and a fresh air duct disposed within the air supply cavity. The frequency converter box is disposed between the fresh air fan and the fresh air duct. The fresh air duct is detachably fixed to either side wall of the air supply cavity, with its air outlet facing the frequency converter box. The frequency converter box is provided with a ventilation grille for the fresh air to enter and exit the fresh air duct.

[0007] Furthermore, the air supply cavity includes a mounting panel, and the main body of the heat dissipation air duct is detachably assembled and fixed to the mounting panel.

[0008] Furthermore, a fresh air filter is installed at the air inlet of the fresh air duct.

[0009] Furthermore, the air outlet of the heat dissipation duct is provided with multiple air outlets, and each air outlet is connected to a different part of the inverter box.

[0010] Furthermore, a heat sink is installed inside the inverter box, and the heat dissipation duct includes a first air outlet facing the internal space of the inverter box and a second air outlet facing the heat sink.

[0011] Furthermore, the air outlet includes a first air outlet and a second air outlet, which are located on both sides of the air duct body and communicate with ventilation grilles on different side walls of the frequency converter box.

[0012] Furthermore, the air inlet of the heat dissipation duct is provided with an flared opening, and the air inlet area is larger than the cross-sectional area of ​​the duct body.

[0013] Furthermore, the air supply cavity is divided into a fan cavity and an electrical control cavity by a partition, and the frequency converter box is integrated with and / or disposed in the electrical control cavity.

[0014] Furthermore, the partition is provided with ventilation grilles.

[0015] Another utility model objective is to provide an internal combustion locomotive, which adopts the following technical solution:

[0016] An internal combustion engine locomotive includes an air conditioning unit, wherein the air conditioning unit is provided with a heat dissipation duct structure as described above.

[0017] The air conditioning heat dissipation duct structure and tram locomotive provided by this utility model have the following effective effects and progress compared with the prior art:

[0018] The air conditioning unit is installed inside the diesel locomotive and exchanges air with the vehicle through the cooling duct to ensure the heat dissipation effect of the inverter box; it solves the problem of air conditioning shutdown caused by the high temperature of the inverter box leading to the failure of the booster board.

[0019] The multiple air outlets of the heat dissipation duct are connected to the ventilation grilles at different locations on the inverter box, which effectively ventilate and cool the inverter box and radiator, ensuring that the inverter and step-up board components can effectively dissipate heat and avoid overheating when operating under high load.

[0020] The heat dissipation duct and mounting panel can be detachably assembled and fixed, which facilitates maintenance and replacement of the fresh air filter and ensures the long-term stable operation of the air conditioning unit.

[0021] Through the above technical solution, the air conditioning unit heat dissipation duct structure of this utility model can effectively improve the heat dissipation efficiency of the air conditioning unit and ensure the stability and reliability of the internal combustion locomotive when running under high load.

[0022] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0023] The accompanying drawings, as part of this utility model, are used to provide a further understanding of the present utility model. The illustrative embodiments and descriptions of the present utility model are used to explain the present utility model, but do not constitute an undue limitation of the present utility model. Obviously, the drawings described below are merely some embodiments; those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0024] In the attached diagram:

[0025] Figure 1 This utility model provides a schematic diagram of the heat dissipation duct structure in an air conditioning unit.

[0026] Figure 2 This utility model provides a schematic diagram of the heat dissipation air duct structure layout for an air conditioning unit;

[0027] Figure 3 This utility model provides a schematic diagram of the airflow field in the heat dissipation duct structure of an air conditioning unit.

[0028] Figure 4 This utility model provides a schematic diagram of the overall airflow field of an air conditioning unit's heat dissipation duct structure.

[0029] The components are: 1. Heat dissipation duct; 2. Inverter box; 3. Heat dissipation fins; 4. Partition; 5. Fresh air unit; 7. Fresh air filter; 8. Fixing bolts; 9. Mounting panel; 10. Duct body; 11. Rivet; 12. First air outlet; 13. Second air outlet; 20. Air supply chamber; 21. Fresh air duct.

[0030] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0032] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0033] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0034] This utility model first provides a heat dissipation duct structure for an air conditioning unit, including an air supply cavity communicating with the driver's cab, a fresh air fan installed in the air supply cavity, a frequency converter box, and a fresh air duct. The frequency converter box is installed between the fresh air fan and the fresh air duct. The fresh air duct is detachably fixed to any side wall of the air supply cavity, with its air outlet facing the frequency converter box. The frequency converter box is provided with a ventilation grille for the fresh air to enter and exit the fresh air duct.

[0035] This utility model provides a heat dissipation duct structure for an air conditioning unit, including an air supply cavity. A partition within the air supply cavity divides it into a fan cavity and an electrical control cavity. A fresh air fan is housed in the fan cavity, and a frequency converter box is housed in the electrical control cavity, or the frequency converter box and electrical control cavity are integrated into a single structure. The frequency converter board, booster board, and corresponding radiators are directly fixed within the electrical control cavity using appropriate mounting brackets or other structures, without any requirements or limitations. It should be noted that the air supply cavity described herein is only for installing the fresh air fan and the corresponding frequency converter box and heat dissipation duct; it is not used for other conventional air mixing operations. The name of the component should not lead to any misunderstanding regarding its structure, location, or function.

[0036] The air inlet of the fresh air unit faces the electrical control chamber. The fresh air unit is a suction fan. A ventilation grille is provided on the partition. In this embodiment, the ventilation grille on the partition is used for fresh air intake and can be regarded as a fresh air grille. When the fresh air unit is activated, the air (fresh air) in the electrical control chamber enters the air supply chamber and the fresh air unit through the ventilation grille on the partition, and enters the air conditioning unit through the air duct connected to the air supply chamber.

[0037] Taking the inverter box fixed inside the electrical control cavity as an example, this paper introduces the specific assembly and connection methods of the air supply cavity, electrical control cavity, inverter box, and heat dissipation duct.

[0038] like Figures 1 to 4 As shown, the air supply cavity is divided into a fan cavity and an electrical control cavity by a partition. A frequency converter box is installed inside the electrical control cavity. In this embodiment, the frequency converter box is fixed to the partition, or the partition is a side panel of the frequency converter box. The side panel of the electrical control cavity opposite the partition serves as a mounting panel for assembling and fixing the heat dissipation duct.

[0039] Furthermore, in this embodiment, the heat dissipation duct 1 is a fresh air duct that is connected to the external environment of the vehicle and introduces fresh air from outside the vehicle into the air supply cavity.

[0040] The heat dissipation duct is a metal sheet structure, such as aluminum sheet which has high heat dissipation efficiency and is lightweight. The main body of the duct has a rectangular cross-section, with one end being the air inlet, and an air inlet is provided. In this embodiment, for example... Figure 1 and Figure 2 As shown, the main body of the air duct and the air inlet roughly form an L-shape. Figure 1 As shown, the air inlet of the heat dissipation duct is flared, making the cross-sectional area of ​​the air inlet larger than that of the duct body, thus increasing the air intake volume. Furthermore, the air inlet is located on the side of the duct body, with its top parallel to the top of the duct body and its bottom connected to the bottom of the duct body via an inclined baffle. Further, in the longitudinal direction, the height of the air inlet is greater than the longitudinal height of the duct body to which it is connected. A fresh air filter is installed at the air inlet to filter the air entering the heat dissipation duct, ensuring the quality of the incoming fresh air.

[0041] The mounting panel is provided with ventilation holes and / or ventilation grilles that correspond to the air inlet. The air inlet of the heat dissipation duct is provided with a folded edge that is perpendicular to the side wall of the ventilation hole or has an angle. The folded edge is provided with a riveting hole. The air inlet is fastened to the ventilation hole and / or ventilation grille, and the folded edge is riveted and fixed to the mounting panel.

[0042] Furthermore, the side of the air duct body facing the mounting panel does not have a side panel, such as... Figure 2 As shown, the top and bottom edges of the main body of the air duct also have folded edges with riveting holes, allowing the main body of the air duct and the air inlet to be directly fixed to the mounting panel. This creates a relatively sealed space for airflow between the main body of the air duct and the inner wall of the mounting panel. The riveting method allows for detachable fixing of the heat dissipation air duct to the mounting panel, facilitating maintenance.

[0043] Multiple air outlets are provided at the air outlet of the heat dissipation duct, each outlet facing a different position in the inverter box, so as to provide targeted air cooling for the components that can generate working heat in different positions in the inverter box.

[0044] In this embodiment, the air outlet of the heat dissipation duct is provided with a first air outlet and a second air outlet. The first air outlet and the second air outlet are located on any two sides or the same side of the duct body, respectively, and are connected to ventilation grilles at different positions on different side walls and / or on the same side wall of the frequency converter box, thereby effectively cooling the frequency converter box and the non-components inside the frequency converter box.

[0045] Furthermore, such as Figure 1 and Figure 3As shown, in this embodiment, an L-shaped cut is made at the junction of the top wall and side wall of the duct body near the end of the duct (the side away from the air inlet). That is, the top wall and side wall of the duct body are cut to form the first air outlet, which increases the air outlet area and makes the area of ​​the airflow sprayed out larger. The airflow flows through the bottom of the frequency converter box.

[0046] A second air outlet is provided between the first air outlet and the air inlet. The second air outlet is located on the side wall of the main air duct body. The vertical height of the second air outlet is less than that of the first air outlet, making the second air outlet appear narrower vertically than the first air outlet. The second air outlet faces the heat sink located on the boost board, inverter board, and other components inside the inverter box. The airflow is directly ejected from the second air outlet onto the heat sink. The rapidly ejected airflow passes between the heat dissipation fins on the heat sink, quickly carrying away the heat from the heat sink, thereby achieving effective air cooling of the heat sink.

[0047] In this embodiment, the inverter box is located in the upper middle part of the electrical control cavity, the inverter, booster plate, and other structures are located in the lower part of the inverter box, and the heat sink is located on the side of the inverter box facing the heat dissipation duct. The bottom of the inverter box is flush with or slightly higher than the top wall of the duct body, allowing the airflow from the first air outlet to pass through the bottom and side of the inverter box. The airflow flowing through the bottom cools the main structures of the inverter and booster plate, while the airflow flowing through the side cools the heat sink. The second air outlet directs airflow towards the heat sink on the side of the inverter box, providing high-speed airflow cooling for the heat sink. Combined with the first air outlet, this provides dual cooling for the heat sink, improving cooling efficiency.

[0048] Ventilation grilles are installed on the partition, at a position relative to or slightly higher than the frequency converter and booster plate. Ventilation grilles are also installed in the lower middle part of the partition. This allows fresh air entering the electrical control chamber to pass through the ventilation grilles and into the fan chamber.

[0049] The first air outlet is located at the junction of the side and top walls of the duct body, and its outlet area is larger than that of the second air outlet. This allows the air entering the duct body to be quickly expelled, preventing impact on the duct body and thus avoiding riveting failure and detachment from the mounting panel. The second air outlet is relatively narrow, allowing for rapid airflow and increasing the airflow velocity. This rapid airflow improves the cooling speed of the radiator.

[0050] In this embodiment, the air inlet of the heat dissipation duct is fixed to the side of the electrical control cavity, so that the fresh air unit, the inverter box, and the heat dissipation duct are arranged in sequence and side by side. In practical applications, the heat dissipation duct can be detachably fixed to any side wall of the air supply cavity, especially to any side wall of the electrical control cavity, and the air outlet faces the electrical control cavity and / or the inverter box, so that the air coming out of the heat dissipation duct can enter the electrical control cavity to cool the inverter box.

[0051] In this application, the inverter box is positioned between the heat dissipation duct and the fresh air unit, and a partition is installed within the air supply cavity to divide it into two chambers. The partition is equipped with ventilation grilles. The heat dissipation duct provides cooling airflow to the electrical control cavity and the inverter box; in this embodiment, the airflow is fresh air. In practical applications, the inverter box can be directly fixed within the air supply cavity using a bracket or similar structure, eliminating the need for a partition. The technology of placing the inverter box between the fresh air unit and the heat dissipation duct, and utilizing the fresh air unit to drive the fresh air flow from the heat dissipation duct to cool the inverter box, is within the scope of protection of this application.

[0052] During air conditioning operation or ventilation, such as Figure 3 and Figure 4 As shown, when the fresh air unit is activated, it generates suction. Outside air enters the main body of the air duct after passing through the fresh air filter, and then enters the electrical control chamber through the first and second air outlets. During this process, the fresh air flows through the inverter box and the fins of the radiator to remove heat, and then enters the air supply chamber through the ventilation grille on the partition and is sent away by the fresh air unit.

[0053] This utility model further provides an internal combustion locomotive, which is equipped with an air conditioning unit, and the air conditioning unit is equipped with the air conditioning heat dissipation duct structure described above.

[0054] The air conditioning heat dissipation duct structure and tram locomotive provided by this utility model have the following effective effects and progress compared with the prior art:

[0055] The air conditioning unit is installed inside the diesel locomotive and exchanges air with the vehicle through the cooling duct to ensure the heat dissipation effect of the inverter box; it solves the problem of air conditioning shutdown caused by the high temperature of the inverter box leading to the failure of the booster board.

[0056] The multiple air outlets of the heat dissipation duct are connected to the ventilation grilles at different locations on the inverter box, which effectively ventilate and cool the inverter box and radiator, ensuring that the inverter and step-up board components can effectively dissipate heat and avoid overheating when operating under high load.

[0057] The heat dissipation duct and mounting panel can be detachably assembled and fixed, which facilitates maintenance and replacement of the fresh air filter and ensures the long-term stable operation of the air conditioning unit.

[0058] Through the above technical solution, the air conditioning unit heat dissipation duct structure of this utility model can effectively improve the heat dissipation efficiency of the air conditioning unit and ensure the stability and reliability of the internal combustion locomotive when running under high load.

[0059] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present utility model. The implementation schemes in the above embodiments can also be further combined or replaced. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. An air conditioning unit heat dissipation air duct structure, characterized in that: It includes an air supply chamber communicating with the driver's cab, a fresh air fan installed in the air supply chamber, a frequency converter box, and a fresh air duct. The frequency converter box is located between the fresh air fan and the fresh air duct. The fresh air duct is detachably fixed to either side wall of the air supply chamber, with its air outlet facing the frequency converter box. The frequency converter box is provided with a ventilation grille for the fresh air to enter and exit the fresh air duct.

2. The air conditioning unit heat dissipation air duct structure of claim 1, wherein: The air supply cavity includes a mounting panel, and the main body of the fresh air duct is detachably assembled and fixed to the mounting panel.

3. The air conditioning unit heat dissipation air duct structure of claim 1, wherein: A fresh air filter is installed at the air inlet of the fresh air duct.

4. The air conditioning unit heat dissipation air duct structure of claim 1, wherein: The fresh air duct has multiple air outlets at its air outlet end, and each air outlet is connected to a different part of the frequency converter box.

5. The air conditioning unit plenum structure of claim 4, wherein: The inverter box is equipped with a heat sink, and the fresh air duct includes a first air outlet facing the interior space of the inverter box and a second air outlet facing the heat sink.

6. The air conditioning unit heat dissipation air duct structure of claim 4, wherein: The air outlet includes a first air outlet and a second air outlet, which are located on both sides of the air duct body and are connected to ventilation grilles on different side walls of the frequency converter box.

7. The air conditioning unit heat dissipation air duct structure according to any one of claims 1-6, characterized in that: The air inlet of the fresh air duct is provided with an flared opening, and the air inlet area of ​​the fresh air duct is larger than the cross-sectional area of ​​the main body of the duct.

8. The air conditioning unit heat dissipation air duct structure of claim 7, wherein: The air supply cavity is divided into a fan cavity and an electrical control cavity by a partition, and the frequency converter box is integrated with and / or disposed in the electrical control cavity.

9. The air conditioning unit heat dissipation duct structure according to claim 8, characterized in that: The partition is equipped with ventilation grilles.

10. An internal combustion engine vehicle comprising an air conditioning unit, characterized by: It also includes the air conditioning unit heat dissipation duct structure as described in any one of claims 1 to 9.

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