Rail vehicle air conditioning air supply duct structure and control method

Abstract

The present invention provides a rail vehicle air conditioning air supply duct structure and control method. The rail vehicle air conditioning air supply duct structure includes an air conditioning unit, a top air supply duct connected to the air conditioning unit, a side air supply duct for being installed in the side wall of the rail vehicle, and a floor air supply duct for being installed in the floor of the rail vehicle. The top air supply duct and the air conditioning unit are both installed on the top of the rail vehicle. The top air supply duct is provided with a plurality of first air outlets, the side air supply duct is provided with a plurality of second air outlets, and the floor air supply duct is provided with a plurality of third air outlets. The side air supply duct is connected to the air conditioning unit, and the floor air supply duct is connected to the side air supply duct. The present invention adds side air supply ducts and bottom plate air supply ducts to achieve that the air conditioning air delivered from the air conditioning unit can be distributed to different locations according to design requirements and output according to different air supply ratios, so as to improve the temperature uniformity of the passenger compartment and the comfort of the passengers, and solve the problem of uneven temperature in summer and winter.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle air-conditioning control, and in particular to a rail vehicle air-conditioning air supply duct structure and a control method. Background Art

[0002] Currently, rail vehicle air conditioning ducts typically operate on the upper roof, delivering processed air into the passenger compartment through ceiling grilles. Supplying air solely from the top makes it difficult to maintain uniform passenger compartment temperature, especially in winter, when the heated air processed by the air conditioner has a lower density than the air inside the vehicle, making it difficult for the air to reach the lower parts of the vehicle. This results in lower temperatures in the lower compartment and higher temperatures at the top. Furthermore, supplying air solely from the top results in slower cooling in the summer and slower heating in the winter. Summary of the Invention

[0003] The object of the present invention is to provide a rail vehicle air conditioning air supply duct structure and control method to improve the temperature uniformity of the passenger compartment and the comfort of passengers.

[0004] The technical solution of the present invention is: a rail vehicle air conditioning air supply duct structure, including an air conditioning unit, a top air supply duct connected to the air conditioning unit, a side portion air duct for being arranged in the side wall of the rail vehicle, and a floor air supply duct for being arranged in the floor of the rail vehicle, the top air supply duct and the air conditioning unit are both arranged on the top of the rail vehicle, the top air supply duct is provided with a plurality of first air outlets, the side portion air duct is provided with a plurality of second air outlets, and the floor air supply duct is provided with a plurality of third air outlets, the side portion air duct is connected to the air conditioning unit, and the floor air supply duct is connected to the side portion air duct.

[0005] In the above scheme, by adding side air ducts and bottom air ducts on the basis of the structure of the original top air supply duct, the conditioned air delivered from the air-conditioning unit can be distributed to different positions according to the design requirements and output according to different air supply ratios, so as to improve the temperature uniformity and passenger comfort in the passenger compartment, solve the problem of uneven temperature in summer and winter, and realize rapid temperature increase and decrease in the carriage.

[0006] Preferably, the side air duct is arranged close to the seat, and the second air outlet is arranged close to the floor.

[0007] Preferably, the side air ducts are provided on both side walls, and at least two groups of the side air ducts are provided on the same air-conditioning unit.

[0008] Preferably, the top air supply duct and the floor air supply duct are parallel to the length direction of the rail vehicle.

[0009] The present invention also provides an air conditioning control method for a rail vehicle, comprising:

[0010] Step 1: Provide a rail vehicle and an air conditioning unit, wherein a plurality of first air outlets are provided on the roof of the rail vehicle, a plurality of second air outlets are provided on the side walls of the rail vehicle, and a plurality of third air outlets are provided on the floor of the rail vehicle; the first air outlets, the second air outlets, and the third air outlets are connected to the air conditioning unit;

[0011] Step 2: Set the air volume of the first air outlet to &1, set the sum of the air volumes of the second air outlet and the third air outlet to &2, and set the outdoor temperature of the rail vehicle to TW;

[0012] Step 3: Monitor the temperature outside the rail vehicle. If the monitored temperature is ≥ TW, the air conditioning unit is started in cooling mode and controls &1>&2. If the monitored temperature is ≤ TW, the air conditioning unit is started in heating mode and controls &1<&2.

[0013] Preferably, the set TW includes TW1 and TW2. If the monitored temperature is ≥ TW1, &1:&2=7:3; if the monitored temperature is ≤ TW2, &1:&2=4:6; if TW2 is less than the monitored temperature and less than TW1, &1:&2=5:5.

[0014] Preferably, TW1=27°C, TW2=15°C.

[0015] Preferably, step 2 further includes step 2.2, setting the indoor top temperature TD and the lower temperature TX, and setting the air-conditioning unit operation time S1 and the temperature difference duration S2 between TD and TX;

[0016] After the air conditioning unit is in cooling mode and operates for the first time period S1 according to step 3, the top temperature TD1 and the bottom temperature TX1 of the room are monitored. If -1°C ≤ TD-TX ≤ 1°C and the duration is greater than S1, the original air supply ratio of &1:&2 is maintained;

[0017] If 1℃<TD-TX≤2℃, and the duration is longer than S2, adjust the air supply ratio of &1:&2 to 8:2;

[0018] If 2℃<TD-TX≤4℃, and the duration is longer than S2, adjust the air supply ratio of &1:&2 to 9:1;

[0019] If 4℃<TD-TX and the duration is longer than S2 / 2, adjust the &1:&2 air supply ratio to 10:0;

[0020] If -2℃<TD-TX≤-1℃ and the duration is longer than S2, adjust the air supply ratio of &1:&2 to 6:4;

[0021] If -4℃<TD-TX≤-2℃ and the duration is longer than S2, adjust the air supply ratio of &1:&2 to 5:5;

[0022] If TD-TX is less than -4°C and lasts longer than S2 / 2, adjust the air supply ratio of &1:&2 to 4:6;

[0023] After the air conditioning unit is in heating mode and runs for the first time period S1 according to step 3, the indoor top temperature TD1 and the lower temperature TX1 are monitored. If -1°C ≤ TD-TX ≤ 1°C and the duration is greater than S2, the original air supply ratio of &1:&2 is maintained;

[0024] If 1℃<TD-TX≤2℃, and the duration is longer than S2, adjust the air supply ratio of &1:&2 to 3:7;

[0025] If 2℃<TD-TX≤4℃, and the duration is longer than S2, adjust the air supply ratio of &1:&2 to 2:8;

[0026] If 4℃<TD-TX and the duration is longer than S2 / 2, adjust the &1:&2 air supply ratio to 0:10;

[0027] If -2℃<TD-TX≤-1℃, and the duration is longer than S2, adjust the air supply ratio of &1:&2 to 5:5;

[0028] If -4℃<TD-TX≤-2℃ and the duration is longer than S2, adjust the air supply ratio of &1:&2 to 6:4;

[0029] If TD-TX is less than -4℃ and lasts longer than S2 / 2, adjust the air supply ratio of &1:&2 to 7:3.

[0030] Preferably, S1=10 minutes, S2=60 seconds.

[0031] Preferably, after the air-conditioning unit runs for each full time period S2 according to step 2.2, the air supply ratio of &1 and &2 is adjusted according to the method of step 2.2.

[0032] Compared with the related art, the beneficial effect of the present invention is: by adding side air ducts and bottom plate air ducts on the basis of the structure of the original top air supply duct, the conditioned air delivered from the air-conditioning unit can be distributed to different positions according to the design requirements and output according to different air supply ratios, so as to improve the temperature uniformity of the passenger compartment and the comfort of the passengers, solve the problem of uneven temperature in summer and winter, and realize rapid temperature increase and decrease in the car. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 A schematic structural diagram of the air supply duct structure for an air conditioner in a rail vehicle provided by the present invention;

[0034] Figure 2 for Figure 1The structural diagram of the air-conditioning unit body is removed;

[0035] Figure 3 for Figure 2 Detailed enlarged diagram in .

[0036] In the attached figure: 1. Air conditioning unit; 2. Top air supply duct; 3. Side air duct; 4. Floor air supply duct; 5. Lower temperature sensor; 6. Return air duct; 7. Top temperature sensor; 8. Air inlet; 9. Control valve. DETAILED DESCRIPTION

[0037] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments. It should be noted that the embodiments and features of the embodiments may be combined unless they conflict. For ease of description, the words "upper," "lower," "left," and "right" appear below merely to indicate the directions of upper, lower, left, and right in the accompanying drawings and do not limit the structure.

[0038] like Figure 1 、 Figure 2 As shown, the rail vehicle air conditioning air supply duct structure provided in this embodiment includes an air conditioning unit 1, a top air supply duct 2, a side air duct 3, a floor air supply duct 4, a lower temperature sensor 5, a return air duct 6, a top temperature sensor 7, an air inlet 8 and a regulating valve 9.

[0039] The air conditioning unit 1 is arranged on the roof of the rail vehicle. Figure 3 As shown, a return air duct 6 is provided inside the air conditioning unit 1. The top air supply duct 2 is placed on the top of the rail vehicle, and is provided with a plurality of first air outlets for discharging air into the interior of the rail vehicle. The air inlet 8 is respectively connected to the top air supply duct 2, the side air duct 3, and the floor air supply duct 4. A regulating valve 9 is provided at the air inlet 8. The regulating valve 9 can receive instructions to adjust the opening to achieve the air supply volume at the top, side, and floor, thereby adjusting the air supply ratio of &1:&2. The top temperature sensor 7 is provided next to the return air duct 6, and the top temperature sensor 7 is used to sense the top TD.

[0040] The floor air duct 4 is positioned at the bottom of the rail vehicle and is provided with a plurality of third air outlets for discharging air into the interior of the rail vehicle. The side air duct 3 connects the air conditioning unit 1 and the floor air duct 4. The side air duct 3 is provided on both side walls of the rail vehicle, and two sets of the side air ducts 3 are provided on the same air conditioning unit 1. The side air duct 3 is positioned near the seats and is provided with a plurality of second air outlets for discharging air into the interior of the rail vehicle, with the second air outlets being positioned near the floor. Lower temperature sensors 5 are provided on both the floor and side walls of the rail vehicle, and are used to sense the lower indoor temperature TX.

[0041] The air conditioning controller collects top and bottom temperatures to control the air supply ratios of the top air duct 2, side air ducts 3, and floor air duct 4, making real-time adjustments. Multiple top temperature sensors 7 and bottom temperature sensors 5 are deployed along the length of the rail vehicle. The average of the temperatures sensed by all top temperature sensors 7 is used as the indoor temperature, while the average of the temperatures sensed by all bottom temperature sensors 5 is used as the bottom temperature. If any temperature sensor fails, that value is discarded.

[0042] In addition, for areas with extremely cold temperatures, electric seat heaters are added under the seats. In this case, the upper and lower air supply ratios can be changed according to the power level of the electric seat heater settings.

[0043] The present invention also provides a method for controlling air conditioning of a rail vehicle, which adopts the above-mentioned rail vehicle air conditioning air supply duct structure and comprises the following steps:

[0044] Step S1, setting parameters

[0045] Step 1.1, set the air volume of the first air outlet to &1, set the sum of the air volumes of the second air outlet and the third air outlet to &2, and set the outdoor temperature of the rail vehicle to TW.

[0046] Step 1.2: Set the indoor top temperature TD and the lower temperature TX, and set the air conditioning unit operation time S1 and the temperature difference duration S2 between TD and TX.

[0047] The set TW includes TW1 and TW2. In this embodiment, TW1 = 27°C, TW2 = 15°C, S1 = 10 minutes, and S2 = 60 seconds.

[0048] Step S2 monitors the temperature outside the rail vehicle. If the monitored temperature is ≥ TW (e.g., 27°C), the air conditioning unit is activated in cooling mode, and &1 is controlled to be greater than &2, that is, the cold air is mostly delivered from the first air outlet. If the monitored temperature is ≤ TW (e.g., 15°C), the air conditioning unit is activated in heating mode, and &1 is controlled to be less than &2, so that the cold air is blown downward from the top. That is, the hot air is mostly delivered from the third and second air outlets, so that the hot air is blown upward from the bottom. If 15°C < the monitored outdoor temperature < 27°C, the air conditioning unit is activated in ventilation mode, and &1 is controlled to be equal to &2.

[0049] Step S3: Start the air conditioning unit

[0050] After the air conditioning unit is in cooling mode and operates for the first time period S1 according to step 3, the top temperature TD1 and the bottom temperature TX1 of the room are monitored. If -1°C ≤ TD-TX ≤ 1°C and the duration is greater than S1, the original air supply ratio of &1:&2 is maintained;

[0051] If 1℃<TD-TX≤2℃, and the duration is longer than S2, adjust the air supply ratio of &1:&2 to 8:2;

[0052] If 2℃<TD-TX≤4℃, and the duration is longer than S2, adjust the air supply ratio of &1:&2 to 9:1;

[0053] If 4℃<TD-TX and the duration is longer than S2 / 2, adjust the &1:&2 air supply ratio to 10:0;

[0054] If -2℃<TD-TX≤-1℃ and the duration is longer than S2, adjust the air supply ratio of &1:&2 to 6:4;

[0055] If -4℃<TD-TX≤-2℃ and the duration is longer than S2, adjust the air supply ratio of &1:&2 to 5:5;

[0056] If TD-TX is less than -4℃ and lasts longer than S2 / 2, adjust the air supply ratio of &1:&2 to 4:6.

[0057] After the air conditioning unit is in heating mode and runs for the first time period S1 according to step 3, the indoor top temperature TD1 and the lower temperature TX1 are monitored. If -1°C ≤ TD-TX ≤ 1°C and the duration is greater than S2, the original air supply ratio of &1:&2 is maintained;

[0058] If 1℃<TD-TX≤2℃, and the duration is longer than S2, adjust the air supply ratio of &1:&2 to 3:7;

[0059] If 2℃<TD-TX≤4℃, and the duration is longer than S2, adjust the air supply ratio of &1:&2 to 2:8;

[0060] If 4℃<TD-TX and the duration is longer than S2 / 2, adjust the &1:&2 air supply ratio to 0:10;

[0061] If -2℃<TD-TX≤-1℃ and the duration is longer than S2, adjust the air supply ratio of &1:&2 to 5:5;

[0062] If -4℃<TD-TX≤-2℃ and the duration is longer than S2, adjust the air supply ratio of &1:&2 to 6:4;

[0063] If TD-TX is less than -4℃ and lasts longer than S2 / 2, adjust the air supply ratio of &1:&2 to 7:3.

[0064] After the air conditioning unit completes a period S2 according to step 3, the air supply ratio of &1 and &2 is adjusted according to the method in step 3. All times, temperatures, and air supply ratios can be adjusted according to the actual operating environment. The above steps use the collected temperature data to allocate the upper and lower air supply ratios through the air conditioning controller.

[0065] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention description and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A method for controlling air conditioning of a rail vehicle, characterized in that: include: Step 1: Provide a rail vehicle and an air conditioning unit, wherein a plurality of first air outlets are provided on the roof of the rail vehicle, a plurality of second air outlets are provided on the side walls of the rail vehicle, and a plurality of third air outlets are provided on the floor of the rail vehicle; the first air outlets, the second air outlets, and the third air outlets are connected to the air conditioning unit; Step 2: Set the air volume of the first air outlet to &1, set the sum of the air volumes of the second air outlet and the third air outlet to &2, and set the outdoor temperature of the rail vehicle to TW; Step 3: Monitor the temperature outside the rail vehicle. If the monitored temperature is ≥ TW, the air conditioning unit is started in cooling mode and controls &1>&2. If the monitored temperature is ≤ TW, the air conditioning unit is started in heating mode and controls &1<&2. Step 2 also includes step 2.2, setting the indoor top temperature TD and the lower temperature TX, and setting the air conditioning unit operation time S1 and the temperature difference duration S2 between TD and TX; After the air conditioning unit is in cooling mode and operates for the first time period S1 according to step 3, the top temperature TD1 and the bottom temperature TX1 of the room are monitored. If -1°C ≤ TD-TX ≤ 1°C and the duration is greater than S1, the original air supply ratio of &1:&2 is maintained; If 1℃<TD-TX≤2℃, and the duration is longer than S2, adjust the air supply ratio of &1:&2 to 8:2; If 2℃<TD-TX≤4℃, and the duration is longer than S2, adjust the air supply ratio of &1:&2 to 9:1; If 4℃<TD-TX and the duration is longer than S2 / 2, adjust the &1:&2 air supply ratio to 10:0; If -2℃<TD-TX≤-1℃ and the duration is longer than S2, adjust the air supply ratio of &1:&2 to 6:4; If -4℃<TD-TX≤-2℃ and the duration is longer than S2, adjust the air supply ratio of &1:&2 to 5:5; If TD-TX is less than -4°C and lasts longer than S2 / 2, adjust the air supply ratio of &1:&2 to 4:6; After the air conditioning unit is in heating mode and runs for the first time period S1 according to step 3, the indoor top temperature TD1 and the lower temperature TX1 are monitored. If -1°C ≤ TD-TX ≤ 1°C and the duration is greater than S2, the original air supply ratio of &1:&2 is maintained; If 1℃<TD-TX≤2℃, and the duration is longer than S2, adjust the air supply ratio of &1:&2 to 3:7; If 2℃<TD-TX≤4℃, and the duration is longer than S2, adjust the air supply ratio of &1:&2 to 2:8; If 4℃<TD-TX and the duration is longer than S2 / 2, adjust the &1:&2 air supply ratio to 0:10; If -2℃<TD-TX≤-1℃ and the duration is longer than S2, adjust the air supply ratio of &1:&2 to 5:5; If -4℃<TD-TX≤-2℃ and the duration is longer than S2, adjust the air supply ratio of &1:&2 to 6:4; If TD-TX is less than -4°C and lasts longer than S2 / 2, adjust the air supply ratio of &1:&2 to 7:3; After the air conditioning unit runs for a full period of time S2 according to step 2.2, the air supply ratio of &1 and &2 is adjusted according to the method of step 2.

2.

2. The air conditioning control method for a rail vehicle according to claim 1, characterized in that: The set TW includes TW1 and TW2. If the monitored temperature is ≥ TW1, &1:&2=7:3; if the monitored temperature is ≤ TW2, &1:&2=4:6; if TW2<monitored temperature<TW1, &1:&2=5:

5.

3. The air conditioning control method for a rail vehicle according to claim 2, characterized in that: TW1=27℃, TW2=15℃.

4. The air conditioning control method for a rail vehicle according to claim 1, characterized in that: S1=10 minutes, S2=60 seconds.

5. The rail vehicle air conditioning control method according to claim 1, which is used for the rail vehicle air conditioning air supply duct structure, is characterized in that: The rail vehicle air conditioning air supply duct structure comprises an air conditioning unit (1), a top air supply duct (2) connected to the air conditioning unit (1), a side partial air duct (3) for being arranged in the side wall of the rail vehicle, and a floor air supply duct (4) for being arranged in the floor of the rail vehicle, wherein the top air supply duct (2) and the air conditioning unit (1) are both arranged on the top of the rail vehicle, a plurality of first air outlets are provided on the top air supply duct (2), a plurality of second air outlets are provided on the side partial air duct (3), and a plurality of third air outlets are provided on the floor air supply duct (4), the side partial air duct (3) is connected to the air conditioning unit (1), and the floor air supply duct (4) is connected to the side partial air duct (3).

6. The air conditioning control method for a rail vehicle according to claim 5, characterized in that: The side air duct (3) is arranged close to the seat, and the second air outlet is arranged close to the floor.

7. The air conditioning control method for a rail vehicle according to claim 5, characterized in that: The side air ducts (3) are arranged on both side walls, and at least two groups of the side air ducts (3) are arranged on the same air-conditioning unit (1).

8. The air conditioning control method for a rail vehicle according to claim 5, characterized in that: The top air supply duct (2) and the floor air supply duct (4) are parallel to the length direction of the rail vehicle.

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