A ventilation and exhaust system for a dining car kitchen
By installing heavy oil exhaust ducts and residual exhaust ducts in the high-speed train's kitchen, kitchen exhaust gases are filtered separately and collected and discharged outside the train, solving the problems of oil fume pollution and unadjustable air volume, and achieving efficient exhaust gas collection and convenient maintenance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- KTK GRP CO LTD
- Filing Date
- 2025-09-12
- Publication Date
- 2026-07-10
AI Technical Summary
The existing waste exhaust system in the high-speed train kitchen cannot effectively filter oil fumes, resulting in waste heat and oil fume pollution of the train's air conditioning system. Furthermore, the airflow cannot be adjusted, and disassembly and cleaning are difficult.
Kitchen exhaust gas is collected separately by heavy oil exhaust gas duct and residual exhaust gas duct. The exhaust gas is filtered through heavy oil exhaust gas filter and air circulation filter respectively. After being collected, it is discharged outside the vehicle by a collection fan. The air volume is adjusted by the air regulating plate.
It effectively filters oil fumes, preventing pollution of vehicle interior facilities; the airflow is adjustable; it is easy to disassemble and clean, improving exhaust gas collection efficiency and system reliability.
Smart Images
Figure CN224476929U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of rail transit, and in particular to a ventilation and waste discharge system for a high-speed train kitchen. Background Technology
[0002] In the existing technology, the waste exhaust system of the high-speed train kitchen simply collects and summarizes the hot air generated by the microwave oven (see patent CN217705805U) and discharges it into the waste exhaust duct of the train's air conditioning system. There is a large amount of waste heat and oil fumes in the kitchen. The existing structure does not have a filtration device and cannot filter the oil fumes. The collected waste gas is also limited. At the same time, the exhaust gas discharged into the waste exhaust duct of the train's air conditioning system will also pollute the air conditioning duct system. Furthermore, it is difficult to disassemble and clean, and the air volume cannot be adjusted. Utility Model Content
[0003] The purpose of this utility model is to provide a ventilation and exhaust system for a high-speed train kitchen that addresses the deficiencies in the existing technology. This system can collect exhaust gases from the entire kitchen area and discharge them outside the train to avoid polluting the facilities and equipment inside. It can also filter oil fumes, is easy to disassemble and clean, and allows for adjustment of the airflow.
[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: It includes a heavy oil exhaust gas duct and a residual exhaust gas duct. The heavy oil exhaust gas duct and the residual exhaust gas duct are connected and converge to the outside of the vehicle. A converging fan is provided at the end of the converging duct of the heavy oil exhaust gas duct and the residual exhaust gas duct. The heavy oil exhaust gas duct is equipped with a heavy oil exhaust gas fan, a heavy oil exhaust gas grille, and a heavy oil exhaust gas filter. The heavy oil exhaust gas grille is located at the exhaust port of the heavy oil exhaust gas duct. The heavy oil exhaust gas fan is located inside the heavy oil exhaust gas duct and its position is adapted to that of the heavy oil exhaust gas grille. The heavy oil exhaust gas filter is inserted into the heavy oil exhaust gas duct through a filter insertion window and is located between the heavy oil exhaust gas fan and the heavy oil exhaust gas grille. An air circulation grille assembly is provided on the surface of the residual exhaust gas duct, and an air circulation filter is provided in each corresponding air guide window of the air circulation grille assembly.
[0005] Furthermore, filter screen stops are provided on both sides of the filter screen insertion window, and the filter screen stops can be rotated to prevent the heavy oil exhaust gas filter screen from detaching from the filter screen insertion window.
[0006] Furthermore, the heavy oil exhaust gas filter screen is composed of dense stainless steel wire mesh that is repeatedly stacked and folded multiple times.
[0007] Furthermore, the end of the heavy oil exhaust gas filter screen is provided with two cylindrical protruding handles.
[0008] Furthermore, a groove is provided on the back of each of the corresponding air guide windows within the air circulation grille assembly.
[0009] Furthermore, the air regulating plate is slidably disposed within the groove, and the air volume can be adjusted by adjusting the position and number of the air regulating plate.
[0010] Furthermore, the position of the air regulating plate is fixed by hand-tightening screws.
[0011] The system includes a heavy oil exhaust gas duct and a residual exhaust gas duct, which are connected and converge to the outside of the vehicle. A converging fan is installed at the end of the converging duct of the heavy oil exhaust gas duct and the residual exhaust gas duct. The heavy oil exhaust gas duct is equipped with a heavy oil exhaust gas fan, a heavy oil exhaust gas grille, and a heavy oil exhaust gas filter. The heavy oil exhaust gas grille is located at the exhaust port of the heavy oil exhaust gas duct. The heavy oil exhaust gas fan is located inside the heavy oil exhaust gas duct and its position is adapted to that of the heavy oil exhaust gas grille. The heavy oil exhaust gas filter filters... The mesh insertion window is inserted into the heavy oil exhaust gas duct and positioned between the heavy oil exhaust gas fan and the heavy oil exhaust gas grille; an air circulation grille assembly is provided on the surface of the residual exhaust gas duct, the air circulation grille assembly consists of several air guide windows, and each corresponding air guide window in the air circulation grille assembly is equipped with an air circulation filter structure, so as to collect the exhaust gas in the entire area of the train kitchen and discharge it outside the train to avoid polluting the facilities and equipment inside the train, while filtering oil fumes, making it easy to disassemble and clean, and allowing the air volume to be adjusted. Attached Figure Description
[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0013] Figure 1 This is a three-dimensional schematic diagram of the ventilation and waste discharge system for the high-speed train kitchen according to this utility model;
[0014] Figure 2 This is a schematic diagram of the heavy oil exhaust gas duct of this utility model;
[0015] Figure 3 This is a schematic diagram of the residual exhaust gas duct of this utility model;
[0016] Figure 4 This is a schematic diagram of the air circulation grille assembly of this utility model.
[0017] Figure label:
[0018] Heavy oil exhaust gas duct 1, heavy oil exhaust gas fan 1-1, heavy oil exhaust gas grille 1-2, heavy oil exhaust gas filter 1-3, filter insertion window 1-4, filter stop 1-5, residual exhaust gas duct 2, air circulation grille assembly 2-1, slide rail 2-2, air regulating plate 2-3, hand-tightening screw 2-4, air circulation filter 2-5, air guide window 2-6, converging fan 3. Detailed Implementation
[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0020] In the description of this utility model, it should be noted that the orientation or positional relationship indicated by terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inner", and "outer" are 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.
[0021] A ventilation and waste discharge system for a high-speed train kitchen, such as Figures 1-4 As shown, the system includes a heavy oil exhaust duct 1 and a residual exhaust duct 2. The heavy oil exhaust duct 1 and the residual exhaust duct 2 are connected and converge to the outside of the vehicle. A converging fan 3 is installed at the end of the converging duct of the heavy oil exhaust duct 1 and the residual exhaust duct 2. The heavy oil exhaust duct 1 is equipped with a heavy oil exhaust fan 1-1, a heavy oil exhaust grille 1-2, and a heavy oil exhaust filter 1-3. The heavy oil exhaust grille 1-2 is located at the exhaust port of the heavy oil exhaust duct 1. The heavy oil exhaust fan... 1-1 is installed inside the heavy oil exhaust gas duct 1 and is positioned in accordance with the heavy oil exhaust gas grille 1-2. The heavy oil exhaust gas filter 1-3 is inserted into the heavy oil exhaust gas duct 1 through the filter insertion window 1-4 and is positioned between the heavy oil exhaust gas fan 1-1 and the heavy oil exhaust gas grille 1-2. An air circulation grille assembly 2-1 is provided on the surface of the residual exhaust gas duct 2. An air circulation filter 2-5 is provided in each corresponding air guide window 2-6 in the air circulation grille assembly 2-1.
[0022] Specifically, in the confined space and poorly ventilated train carriages, two independent channels, a heavy oil exhaust duct 1 and a residual exhaust duct 2, are installed. The heavy oil exhaust duct 1 is specifically responsible for collecting and treating high-heat, oily fumes and other exhaust gases generated by stoves, etc., which are drawn in by the heavy oil exhaust grille 1-2 and then filtered efficiently by the heavy oil exhaust filter 1-3. The residual exhaust duct 2, through its surface air circulation grille assembly 2-1, collects waste heat and lighter oily fumes from other areas of the kitchen. Each air guide window 2-6 is equipped with an air circulation filter 2-5 for preliminary filtration, significantly improving the efficiency and targeting of waste heat and fumes collection from all areas of the kitchen. This maximizes the use of limited surface area to capture diffused exhaust gases, improves the overall collection efficiency of waste heat and fumes in the enclosed space, and solves the problem of limited exhaust gas collection in existing technologies. In the heavy oil exhaust duct 1, the heavy oil exhaust filter 1-3 directly filters high-heat oily fumes. In the residual exhaust gas duct 2, each air guide window 2-6 is equipped with an air circulation filter 2-5. These filters effectively intercept grease particles and pollutants, preventing them from entering the duct system and subsequent converging ducts. This solves the problem of existing technologies lacking filtration devices, leading to direct emission of oil fumes and pollution of the vehicle's air conditioning system exhaust ducts, thus protecting the cleanliness of the duct system. After the two ducts, namely the heavy oil exhaust gas duct 1 and the residual exhaust gas duct 2, are combined, a converging fan 3 is installed at the end of their common converging duct. A powerful fan is used to uniformly and efficiently discharge the pre-filtered exhaust gas directly outside the vehicle, avoiding the residue and pollution of exhaust gas inside the vehicle or in the air conditioning ducts. This avoids the situation where exhaust gas remains or circulates inside the enclosed car or in the air conditioning ducts, ensuring that the exhaust gas is effectively isolated and discharged away from the passenger environment, meeting the special emission requirements of the enclosed space of the train. Inside the heavy oil exhaust gas duct 1, the heavy oil exhaust gas fan 1-1 is located near the heavy oil exhaust gas grille 1-2, enhancing the local suction capacity of heavy oil fume sources such as stoves. Meanwhile, the heavy oil exhaust gas filter 1-3 is inserted into the air duct through the filter insertion window 1-4, making it convenient to clean and replace the filter. This reduces the difficulty and time required for maintenance in the enclosed equipment space, ensuring the continuous effectiveness of the system in the train operating environment and reducing maintenance difficulty and cost. The air circulation filter 2-5 is also designed at the air guide window 2-6, which is also convenient for maintenance. The air circulation grille assembly 2-1 on the residual exhaust gas duct 2 consists of multiple air guide windows 2-6, which increases the coverage area and air intake of exhaust gas collection. It can more effectively collect waste heat and lighter oil fumes that are diffused in the kitchen space outside the stove area, significantly improving the air handling capacity of the entire kitchen environment.
[0023] As a preferred embodiment of the above, such as Figures 1-4 As shown, filter screen stops 1-5 are provided on both sides of the filter screen insertion window 1-4. The filter screen stops 1-5 can be rotated to prevent the heavy oil exhaust gas filter screen 1-3 from detaching from the filter screen insertion window 1-4.
[0024] Specifically, in the continuous vibration environment generated by train operation, the filter screen stop 1-5, through a rotary locking mechanism, physically prevents the heavy oil exhaust gas filter screen 1-3 from accidentally loosening or sliding out of the filter screen insertion window 1-4. This ensures that the heavy oil exhaust gas filter screen 1-3 is always firmly held in its designed position within the heavy oil exhaust gas duct 1, namely between the heavy oil exhaust gas fan 1-1 and the heavy oil exhaust gas grille 1-2. This prevents the filter screen from shifting or falling off due to vibration, or even being sucked into the heavy oil exhaust gas fan 1-1, causing equipment damage or safety accidents. This significantly improves the system's performance under dynamic operating conditions. The reliability of the filter screen stop 1-5 is ensured by its simple and intuitive rotation design. Rotation unlocks or locks the filter screen, allowing maintenance personnel to easily rotate and open the stop to remove the heavy oil exhaust gas filter screen 1-3 for cleaning or replacement. After cleaning, the filter screen is inserted and the stop is rotated back to lock the filter screen. This eliminates the need for complex tools or additional fasteners, simplifies the maintenance process of the heavy oil exhaust gas filter screen 1-3 within the limited space of the train equipment compartment, and ensures that the filter screen is correctly and reliably fixed after each maintenance, preventing improper maintenance from causing the filter screen to be not properly fixed.
[0025] As a preferred embodiment of the above, such as Figures 1-4 As shown, the heavy oil exhaust gas filter screen 1-3 is composed of dense stainless steel wire mesh that is repeatedly stacked and folded multiple times.
[0026] Specifically, the heavy oil exhaust gas filter 1-3 is constructed from dense stainless steel wire mesh that is repeatedly stacked and folded. This structure greatly increases the effective filtration surface area and internal tortuous path of the filter. When high-concentration oily exhaust gas is drawn into the heavy oil exhaust gas fan 1-1 through the heavy oil exhaust gas grille 1-2, the filter can efficiently intercept and accommodate more and finer oil particles and pollutants, significantly improving filtration efficiency and reducing the pollution burden on the heavy oil exhaust gas duct 1, the collecting duct, and the collecting fan 3. The dense stainless steel wire mesh material itself has high strength, high temperature resistance, and corrosion resistance. Through the process of repeated stacking and folding, the overall structural strength and deformation resistance of the filter are further enhanced, enabling the heavy oil exhaust gas filter 1-3 to withstand the high temperature and highly corrosive environment of heavy oily exhaust gas, as well as the continuous vibration during train operation, resulting in a longer service life and higher reliability. Furthermore, stainless steel wire mesh is not prone to oil adhesion, and its dense, multi-folded structure, while having a strong dirt-holding capacity, also makes it easy to use professional cleaning agents or equipment for high-pressure rinsing or soaking cleaning, which helps to more thoroughly remove accumulated grease and restore filtration performance.
[0027] As a preferred embodiment of the above, such as Figures 1-4 As shown, the heavy oil exhaust gas filter screen 1-3 is provided with two cylindrical protruding handles at its ends.
[0028] Specifically, two cylindrical protruding handles at the ends of the heavy oil exhaust gas filter screens 1-3 provide direct and secure gripping points. Maintenance personnel can easily and safely use these two handles to pull out the heavy filter screens, which have absorbed a large amount of oil, from the filter screen insertion windows 1-4 for cleaning or replacement. This overcomes the problem of the filter screen surface being slippery and difficult to grip in oily environments, and significantly improves the convenience and safety of maintenance operations after the filter screen stops 1-5 are unlocked.
[0029] As a preferred embodiment of the above, such as Figures 1-4 As shown, each of the corresponding air guide windows 2-6 in the air circulation grille assembly 2-1 is provided with a groove 2-2 on its back.
[0030] As a preferred embodiment of the above, such as Figures 1-4 As shown, the air regulating plate 2-3 is slidably disposed in the slide groove 2-2, and the air volume can be adjusted by adjusting the position and number of the air regulating plate 2-3.
[0031] Specifically, by installing a chute 2-2 on the back of each air guide window 2-6 and equipping it with a sliding air regulating plate 2-3, operators can independently adjust the opening size of each window according to the actual waste heat and oil fume generation in different areas of the kitchen. By sliding the air regulating plate 2-3 to cover part or all of the window area, the airflow entering the residual exhaust gas duct 2 through the window can be precisely controlled, achieving on-demand distribution of local airflow. By adjusting the opening of the air regulating plate 2-3 at different positions of the air guide windows 2-6, more airflow can be guided to key areas with high waste gas generation or high oil fume concentration, while reducing the airflow in non-key areas. This differentiated airflow adjustment capability optimizes the airflow organization in the kitchen, significantly improves the overall collection efficiency of diffused waste heat and oil fumes by the air circulation grille assembly 2-1, and solves the problem of insufficient or wasted local extraction that may be caused by uniform grilles. The intensity of cooking activities and equipment use in the kitchen is dynamically changing. By increasing or decreasing the number of air regulating plates by 2-3, it is possible to quickly respond to the dynamic changes in exhaust demand during different working periods and under different menus, and always maintain the best exhaust gas and waste heat collection effect.
[0032] As a preferred embodiment of the above, such as Figures 1-4 As shown, the position of the air regulating plate 2-3 is fixed by hand-tightening screws 2-4.
[0033] Specifically, the position of the air regulating plate 2-3 within the slide groove 2-2 is fixed by hand-tightening screws 2-4, thus providing a simple, direct, and secure locking mechanism. Tightening the hand-tightening screws 2-4 effectively prevents the air regulating plate 2-3 from accidentally sliding or shifting due to train vibration or airflow impact, ensuring that the set airflow distribution scheme is maintained stably and for a long period. The design of the slide groove 2-2 makes the sliding adjustment operation of the air regulating plate 2-3 intuitive and convenient. The hand-tightening screws 2-4 require no special tools and can be tightened or loosened by hand, greatly facilitating on-site personnel to adjust the airflow or clean and maintain the air regulating plate 2-3 according to actual needs, reducing the complexity of system debugging and daily maintenance.
[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A ventilation and waste discharge system for a high-speed train kitchen, characterized in that: It includes a heavy oil exhaust gas duct (1) and a residual exhaust gas duct (2). The heavy oil exhaust gas duct (1) and the residual exhaust gas duct (2) are connected and jointly connected to the outside of the vehicle. A converging fan (3) is provided at the end of the converging duct of the heavy oil exhaust gas duct (1) and the residual exhaust gas duct (2). The heavy oil exhaust gas duct (1) is equipped with a heavy oil exhaust gas fan (1-1), a heavy oil exhaust gas grille (1-2), and a heavy oil exhaust gas filter (1-3). The heavy oil exhaust gas grille (1-2) is opened at the exhaust port of the heavy oil exhaust gas duct (1). The heavy oil exhaust gas fan (1-1) is located inside the heavy oil exhaust gas duct (1) and is positioned to match the heavy oil exhaust gas grille (1-2). The heavy oil exhaust gas filter (1-3) is inserted into the heavy oil exhaust gas duct (1) through a filter insertion window (1-4) and is located between the heavy oil exhaust gas fan (1-1) and the heavy oil exhaust gas grille (1-2). The residual exhaust gas duct (2) is provided with an air circulation grille assembly (2-1), and each air guide window (2-6) in the air circulation grille assembly (2-1) is provided with an air circulation filter (2-5).
2. The ventilation and waste discharge system for a high-speed train kitchen according to claim 1, characterized in that, Filter screen stops (1-5) are provided on both sides of the filter screen insertion window (1-4). The filter screen stops (1-5) can be rotated to prevent the heavy oil exhaust gas filter screen (1-3) from detaching from the filter screen insertion window (1-4).
3. A ventilation and waste discharge system for a high-speed train kitchen according to claim 2, characterized in that, The heavy oil exhaust gas filter screen (1-3) is composed of dense stainless steel wire mesh that is repeatedly stacked and folded multiple times.
4. A ventilation and waste discharge system for a high-speed train kitchen according to claim 3, characterized in that, The heavy oil exhaust gas filter screen (1-3) is provided with two cylindrical protruding handles at its end.
5. A ventilation and waste discharge system for a high-speed train kitchen according to claim 1, characterized in that, Each air guide window (2-6) in the air circulation grille assembly (2-1) is provided with a groove (2-2) on its back.
6. A ventilation and waste discharge system for a high-speed train kitchen according to claim 5, characterized in that, The air regulating plate (2-3) is slidably disposed in the slide groove (2-2), and the air volume is adjusted by adjusting the position and number of the air regulating plate (2-3).
7. A ventilation and waste discharge system for a high-speed train kitchen according to claim 6, characterized in that, The position of the air regulating plate (2-3) is fixed by hand-tightening screws (2-4).