Air conditioning apparatus, railway vehicle, and control method for air conditioning apparatus

Abstract

The present disclosure provides an air conditioning device, a railway vehicle and a control method of the air conditioning device. The air conditioning device is suitable for being arranged on a railway vehicle, comprising: an air conditioning main body provided with a condenser; and a grille assembly arranged on an outer surface of the railway vehicle and covering an outer side of the condenser, having a closed state of shielding the condenser to an inner side of the railway vehicle and an open state of exposing the condenser to allow air flow passing through an outer side of the railway vehicle to exchange heat with the condenser; wherein the grille assembly is configured to adjust an opening direction of the grille assembly in response to a running direction of the railway vehicle to guide the air flow to pass through the outer side of the condenser.

Description

Technical Field

[0001] At least one embodiment of this disclosure relates to the field of air conditioning equipment technology, and more specifically, to an air conditioning device configured on a rail vehicle, the rail vehicle, and a control method for the air conditioning device. Background Technology

[0002] The air conditioning equipment installed on rail vehicles is mostly a top-mounted unit control unit, which means that the air conditioning equipment is placed on the top of the rail vehicle and an air inlet is provided on the outer shell of the rail vehicle to exchange heat with the condenser of the air conditioning equipment.

[0003] Currently, the grille assemblies used in air conditioning equipment are mostly configured as static structures. Even if the blades of the grille assembly are fixed at a certain angle to the outer shell of the rail vehicle, the airflow passing through the outside of the rail vehicle is guided into the air conditioning equipment at a fixed angle of attack to exchange heat with the condenser.

[0004] When designing a grid assembly with a stationary structure, the maximum operating speed and maximum cooling capacity of the rail vehicle in actual use scenarios must be considered. However, in actual operation scenarios, situations where rail vehicles operate at maximum speed and require maximum cooling capacity are rare. As a result, in other actual operation scenarios, the stationary grid assembly can lead to excessive condensation airflow and generate significant wind resistance for the rail vehicle. Summary of the Invention

[0005] To address at least one of the above-mentioned and other technical problems in the prior art, this disclosure provides an air conditioning device, a rail vehicle, and a control method for the air conditioning device. The grille assembly has a closed state and an open state, and the opening direction can be adjusted in response to the running direction of the rail vehicle, so that the condensate intake air volume and the wind resistance generated on the rail vehicle are adjustable.

[0006] This disclosure provides an air conditioning device suitable for use on a rail vehicle, comprising: an air conditioning unit with a condenser; and a grille assembly covering the outside of the condenser and disposed on the outer surface of the rail vehicle, having a closed state that conceals the condenser inside the rail vehicle and an open state that exposes the condenser to allow heat exchange between the condenser and airflow passing through the outside of the rail vehicle; wherein the grille assembly is configured to adjust its opening direction in response to the running direction of the rail vehicle to guide airflow through the outside of the condenser.

[0007] According to embodiments of this disclosure, the aforementioned grille assembly is further configured to adjust the opening degree of the grille assembly in the aforementioned open state in response to the operating speed of the aforementioned rail vehicle and / or the target cooling capacity.

[0008] According to an embodiment of the present disclosure, the grille assembly includes: a frame defining an air inlet within the frame; a plurality of blades arranged parallel to each other within the air inlet, each blade being configured to oscillate between a closed position engaging with the outer edge of an adjacent blade and an open position forming a gap with an adjacent blade; and an actuator configured to drive at least a portion of the blades to oscillate between the closed position and the open position, such that the grille assembly has the closed state and the open state in response to the position of the blades.

[0009] According to embodiments of this disclosure, the actuating unit is further configured to drive the blade to oscillate clockwise or counterclockwise around the axis of the blade in response to the running direction of the rail vehicle.

[0010] According to an embodiment of the present disclosure, the actuating part is further configured to drive the blade to remain in any position between the closed position and the open position in response to the operating speed of the rail vehicle and the target cooling capacity.

[0011] According to an embodiment of the present disclosure, the above-mentioned grid assembly further includes a rotating shaft, the two ends of which are pivotally mounted on opposite sides of the frame; the blades are sleeved on the outside of the rotating shaft and configured to rotate coaxially with the rotating shaft.

[0012] According to an embodiment of the present disclosure, the blade includes a blade body, the two sides of the blade body serve as the outer edges of the blade, suitable for abutting against another adjacent blade, and the side of the blade located within the frame is provided with a protrusion that protrudes outward in the radial direction of the rotation axis; the actuation part includes adsorption members arranged on both sides of the protrusion, at least one of the two adsorption members is magnetized in response to the running direction of the rail vehicle to adsorb the protrusion, causing the blade body to swing about the axis of the rotation axis.

[0013] According to an embodiment of the present disclosure, the actuating part includes a driving member configured to be connected to the rotating shaft and adapted to drive the blade body to oscillate about the axis of the rotating shaft.

[0014] Embodiments of this disclosure also provide a rail vehicle equipped with an air conditioning unit; wherein the grille assembly of the air conditioning unit is arranged on the top surface of the rail vehicle.

[0015] According to an embodiment of this disclosure, the rail vehicle is further equipped with a vehicle control system suitable for acquiring the operating signals of the rail vehicle, and the vehicle control system is communicatively connected to the air conditioning equipment; wherein, the operating signals of the rail vehicle include at least one of the operating direction signal, operating speed signal and target cooling capacity signal of the rail vehicle.

[0016] According to an embodiment of this disclosure, the air conditioning device adjusts the opening direction of the grille assembly in response to the operating direction signal.

[0017] According to embodiments of this disclosure, the air conditioning equipment adjusts the opening degree of the grille assembly of the air conditioning equipment in response to the operating speed signal and / or the target cooling capacity signal.

[0018] Embodiments of this disclosure also provide a control method for an air conditioning device, including: acquiring the running direction of a rail vehicle; and adjusting the opening direction of the grille assembly of the air conditioning device based on the running direction of the rail vehicle.

[0019] According to embodiments of this disclosure, the control method for the air conditioning equipment further includes: acquiring the operating speed and target cooling capacity of the rail vehicle; and adjusting the opening degree of the grille assembly of the air conditioning equipment based on the operating speed and / or target cooling capacity of the rail vehicle.

[0020] According to embodiments of this disclosure, the opening adjustment of the grille assembly based on the target cooling capacity of the rail vehicle takes priority over the operating speed of the rail vehicle.

[0021] According to the air conditioning equipment, rail vehicle, and control method of the air conditioning equipment provided in this disclosure, the grille assembly has a closed state and an open state, which is suitable for adjusting the condenser air intake and the wind resistance generated on the rail vehicle. The grille assembly adjusts its opening direction in response to the running direction of the rail vehicle, so that the grille assembly faces the direction of the airflow to form a windward surface, thereby guiding more airflow through the outside of the condenser for heat exchange. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of a grille assembly of an air conditioning device according to an illustrative embodiment of the present disclosure;

[0023] Figure 2 yes Figure 1 The diagram shown illustrates the usage status of the grille assembly. Figure 2 A indicates the open state. Figure 2 B indicates a closed state;

[0024] Figure 3 yes Figure 2 The diagram shows the grille assembly in the open position, illustrating the angle of attack.

[0025] Figure 4 This is a schematic diagram of a grille assembly according to an exemplary embodiment, showing the adsorption element;

[0026] Figure 5 This is a schematic diagram of another illustrative embodiment of the grille assembly, showing the drive element; and

[0027] Figure 6 This is a flowchart of a control method for an air conditioning device according to an illustrative embodiment of the present disclosure.

[0028] In the accompanying drawings, the meanings of the reference numerals are as follows:

[0029] 1. Grille assembly;

[0030] 11. Leaves;

[0031] 111. The blade itself;

[0032] 112. Protrusion;

[0033] 12. Rotation axis;

[0034] 13. Framework;

[0035] 14. Adsorption components;

[0036] 15. Driving components;

[0037] 2. Condenser; and

[0038] 3. The top surface of the rail vehicle. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of this disclosure clearer, the following detailed description is provided in conjunction with specific embodiments and the accompanying drawings.

[0040] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit this disclosure. The terms “comprising,” “including,” etc., as used herein indicate the presence of the stated features, steps, operations, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, or components.

[0041] All terms used herein, including technical and scientific terms, have the meanings commonly understood by those skilled in the art, unless otherwise defined. It should be noted that the terms used herein are to be interpreted in a manner consistent with the context of this specification, and not in an idealized or overly rigid way.

[0042] When using expressions such as "at least one of A, B, and C," the meaning should generally be interpreted according to the understanding of someone skilled in the art. For example, "a system having at least one of A, B, and C" should include, but is not limited to, systems having A alone, having B alone, having C alone, having A and B, having A and C, having B and C, and / or having A, B, and C. Similarly, when using expressions such as "at least one of A, B, or C," the meaning should generally be interpreted according to the understanding of someone skilled in the art. For example, "a system having at least one of A, B, or C" should include, but is not limited to, systems having A alone, having B alone, having C alone, having A and B, having A and C, having B and C, and / or having A, B, and C.

[0043] In current rail vehicles, taking EMUs as an example, the air conditioning equipment is mostly equipped with top-mounted unit control units. That is, the air conditioning equipment is set on the top of the EMU, and part of the grille assembly is exposed on the outer surface of the EMU as an air inlet for cooling the condenser of the air conditioning equipment.

[0044] Currently, the grille assemblies mounted on the top of high-speed trains are mostly configured as stationary structures. Due to the design requirements for extreme scenarios, stationary grille assemblies often require a large design redundancy to meet the condensing air intake requirements under the train's maximum operating speed and maximum cooling capacity conditions. However, in actual train operation, the proportion of these extreme conditions is relatively small. Therefore, the condensing air intake of the grille assemblies often exceeds the condensing air intake required for actual operation, and this also results in the grille assemblies creating significant wind resistance for the train.

[0045] To address the shortcomings of the aforementioned technologies, providing an air conditioning device with an adjustable condenser air intake grille has become an urgent technical problem to be solved.

[0046] In view of the above, embodiments of this disclosure provide an air conditioning device, a rail vehicle, and a control method for the air conditioning device based on the same inventive concept.

[0047] Figure 1 This is a schematic diagram of a grille assembly of an air conditioning device according to an illustrative embodiment of the present disclosure.

[0048] According to the rail vehicle provided in this disclosure, such as Figure 1 As shown, an air conditioning unit is installed. The air conditioning unit's grille assembly 1 is arranged on the top surface 3 of the rail vehicle.

[0049] In one illustrative embodiment, such as Figure 1 As shown, the rail vehicle is constructed with a double-layer structure, specifically including an inner shell and an outer shell, wherein the outer surface of the outer shell is used as... Figure 1 The top surface 3 of the rail vehicle is shown. Furthermore, an air conditioning unit equipped with a condenser is disposed inside the outer shell of the rail vehicle, and a through hole is provided on the outer shell of the rail vehicle corresponding to the condenser disposed on the air conditioning unit (including but not limited to the through hole at least partially overlapping the condenser in the orthographic projection in the vertical direction).

[0050] In one illustrative embodiment, such as Figure 1 As shown, the grille assembly is installed in the aforementioned through hole.

[0051] According to embodiments of this disclosure, the rail vehicle is further equipped with a vehicle control system suitable for acquiring the rail vehicle's operating signals, and the vehicle control system is communicatively connected to the air conditioning equipment. The rail vehicle's operating signals include at least one of a rail vehicle's operating direction signal, operating speed signal, and target cooling capacity signal.

[0052] In one illustrative embodiment, the vehicle control system includes, but is not limited to, at least one of the following: a human-machine interface display unit, an onboard safety computer, a GSM-R wireless communication unit, a speed and distance measurement unit, a transponder information transmission module, a track circuit information reading system, and other equipment suitable for collecting the operating status and / or external information of the rail vehicle.

[0053] Among them, the running direction signal of the rail vehicle is a vector signal, representing the forward or reverse movement along the arranged track, rather than a specific geographical direction (such as east, west, south, north, etc.); the running speed signal represents the running speed of the rail vehicle along the track in the forward or reverse direction. This running speed signal can be represented by a single speed value or a speed range including multiple speed values; the target cooling signal represents the optimal cooling capacity configured based on the specific load of the rail vehicle (such as the number of passengers in a certain car or a certain train formation). For example, if the number of passengers in a certain car is small, a smaller target cooling capacity can be configured if a corresponding cooling temperature needs to be maintained; similarly, if the number of passengers in a certain car is large, a lower cooling temperature and fresh air exchange rate need to be configured, so a higher target cooling capacity can be configured.

[0054] It should be noted that any vehicle control system capable of collecting operating signals from rail vehicles, as well as any operating signals suitable for controlling air conditioning equipment, can be selected for application, without further elaboration.

[0055] Figure 2 yes Figure 1 The diagram shown illustrates the usage status of the grille assembly. Figure 2 A indicates the open state. Figure 2 B indicates a closed state.

[0056] According to the information provided in this disclosure, air conditioning equipment suitable for use on rail vehicles, such as... Figure 1 and Figure 2 As shown, the system includes an air conditioning unit with a condenser 2 and a grille assembly 1. The grille assembly 1 covers the outside of the condenser 2 and is arranged on the outer surface of the rail vehicle. It has a closed state that conceals the condenser 2 inside the rail vehicle and an open state that exposes the condenser 2 to allow heat exchange between the condenser 2 and airflow passing through the outside of the rail vehicle. The grille assembly 1 is configured to adjust its opening direction in response to the running direction of the rail vehicle to guide airflow through the outside of the condenser 2.

[0057] According to embodiments of this disclosure, such as Figure 2 As shown, the air conditioning equipment responds to the running direction signal output by the vehicle control system of the rail vehicle and adjusts the opening direction of the air conditioning equipment grille assembly 1.

[0058] Figure 3 yes Figure 2 The diagram shows the grille assembly in the open position, indicating the angle of attack.

[0059] For example, rail vehicles along such Figure 1 As shown, the airflow moves from left to right, with the airflow above the top of the rail vehicle moving relative to the rail vehicle from right to left (e.g., ...). Figure 3 (As shown by the arrow) through, in response to the running direction of the rail vehicle, the grid assembly 1 is configured as follows: Figure 2 The closed state shown in B is adjusted to be as follows Figure 3 The open state shown (even if the side of the grille assembly closest to the airflow is raised to form a windward surface, and the windward angle formed by this windward surface and the direction of the incoming flow is (i.e.) Figure 3 The α shown is configured at an acute or right angle so that the airflow is guided into the air conditioning unit through the windward side to cool the condenser.

[0060] In this embodiment, the grille assembly 1 has a closed state and an open state, which is suitable for adjusting the condenser air intake and the wind resistance generated by the rail vehicle. The grille assembly adjusts its opening direction in response to the running direction of the rail vehicle, so that the grille assembly faces the direction of the airflow to form a windward surface, thereby guiding more airflow through the outside of the condenser for heat exchange.

[0061] According to embodiments of the present disclosure, the grille assembly 1 is also configured to adjust the opening degree of the grille assembly 1 in the open state in response to the operating speed of the rail vehicle and / or the target cooling capacity.

[0062] According to an embodiment of this disclosure, the air conditioning device adjusts the opening degree of the grille assembly 1 in response to the operating speed signal and / or target cooling capacity signal output by the vehicle control system of the rail vehicle.

[0063] In this implementation, the grille assembly in the open state can adjust its opening degree in response to a target cooling signal output by the vehicle control system. For example, the vehicle control system may have a corresponding target cooling capacity set based on the actual number of passengers. The vehicle control system outputs a target cooling signal associated with the target cooling capacity to the air conditioning unit. Based on this target cooling signal, the air conditioning unit controls the grille assembly to adjust and maintain an open angle, thereby adjusting the amount of condensing air entering the air conditioning unit, so that the heat exchange medium in the condenser can condense to meet the actual cooling requirements.

[0064] According to embodiments of this disclosure, such as Figure 1 As shown, the grille assembly 1 includes a frame 13, a plurality of blades 11, and an actuator. An air inlet is defined within the frame 13. The plurality of blades 11 are arranged parallel to each other within the air inlet, each blade 11 being configured to oscillate between a closed position engaging the outer edge of an adjacent blade 11 and an open position forming a gap with an adjacent blade 11. The actuator is configured to drive at least a portion of the blades 11 to oscillate between the closed and open positions, so that the grille assembly 1 has a closed state and an open state in response to the position of the blades 11.

[0065] According to embodiments of this disclosure, such as Figure 1 As shown, the actuator ( Figure 1 (Not shown in the image) is also configured to drive the blade 11 to oscillate clockwise or counterclockwise about the axis of the blade 11 in response to the direction of travel of the rail vehicle.

[0066] According to embodiments of this disclosure, such as Figure 1 As shown, the actuator ( Figure 1 (Not shown) is also configured to drive the blade 11 to remain in either a closed or open position in response to the running speed of the rail vehicle and the target cooling capacity.

[0067] In one illustrative embodiment, such as Figure 1 As shown, the frame 13 includes, but is not limited to, being constructed as a rectangular structure. Specifically, the interior of the frame 13 forms a generally rectangular air intake.

[0068] According to embodiments of this disclosure, such as Figure 1 As shown, the grille assembly 1 also includes a rotating shaft 12, the two ends of which are pivotally mounted on opposite sides of the frame 13. Blades 11 are fitted onto the outside of the rotating shaft 12 and configured to rotate coaxially with it.

[0069] In one illustrative embodiment, such as Figure 1 As shown, the grille assembly 1 includes components along the length direction of the frame 13 (e.g., ...). Figure 1Multiple rotating shafts 12 are evenly spaced in the left-right direction (as shown), and the axial ends of the rotating shafts are rotatably mounted on opposite sides of the frame 13 in the width direction (e.g., ...). Figure 1 (The direction facing the paper is shown). Furthermore, a blade 11 is coaxially sleeved on the outer side of each rotating shaft 12, so that the blades 11 are rotatably and evenly arranged along the length direction of the air inlet.

[0070] In one illustrative embodiment, each blade 11 is connected to an actuator, suitable for unified control by the actuator (i.e., each blade synchronously enters a closed state or an open state, and in the open state, each blade has the same opening angle). It should be understood that the embodiments of this disclosure are not limited thereto.

[0071] For example, a portion of the multiple blades 11 may be configured to be fixed to the frame 13 (e.g., always in the closed position), while another portion may be configured to swing between the closed and open positions.

[0072] For example, multiple blades 11 are configured into multiple groups, each group having at least one blade, and the blades 11 in the same group are configured to be driven by a common actuator so that different parts of the grid assembly can have different opening degrees.

[0073] In this embodiment, the blades are driven to swing between a closed position and an open position by an actuator, which is suitable for adjusting the grille assembly between a closed state and an open state, and can also adjust the opening degree of the grille assembly in the open state.

[0074] Figure 4 This is a schematic diagram of a grille assembly according to an exemplary embodiment, showing the adsorption element;

[0075] According to embodiments of this disclosure, such as Figure 4 As shown, the blade 11 includes a blade body 111, with both sides of the blade body 111 serving as the outer edges of the blade 11, suitable for abutting against another adjacent blade 11. A protrusion 112 protruding outward along the radial direction of the rotation axis 12 is provided on one side of the blade 11 located within the frame 13. The actuating part includes adsorption members 14 arranged on both sides of the protrusion 112. At least one of the two adsorption members 14 is magnetized in response to the running direction of the rail vehicle to attract the protrusion 112, causing the blade body 111 to oscillate about the axis of the rotation axis 12.

[0076] In one illustrative embodiment, such as Figure 4 As shown, the protrusion 112 of the blade 11 can be made of a magnetic material. Specifically, the blade 11 (including the protrusion 112) is configured with an axisymmetric structure, and the protrusion 112 is magnetized in the left-right direction (e.g., as shown in the image). Figure 4 The left side of the protrusion 112 shown is configured as the S pole, and the right side is configured as the N pole.

[0077] In one illustrative embodiment, such as Figure 4 As shown, two adsorption members 14 are symmetrically arranged on both sides of the protrusion 112. Specifically, the two adsorption members 14 are configured with different magnetic poles on the opposite sides of the protrusion 112. For example, those arranged on... Figure 4 The adsorption element 14 on the left side is configured as an N-polarity and is disposed in Figure 4 The adsorption element 14 on the right side is configured as the S pole.

[0078] In this embodiment, the protrusion 112 is disposed on the lower part of the blade 11. Assuming the blade 11 has a uniform texture, the center of gravity of the blade 11 is located below the rotation axis 12 (i.e., within the frame). Both adsorption members 14 are in a conductive state with low current to adsorb the protrusion 112 and maintain its balanced position in the middle of the two adsorption members 14. When the grille assembly 1 responds to the operating speed signal and / or target cooling capacity signal output by the vehicle control system, one adsorption member 14 is de-energized or a larger current is applied, so that the attraction force exerted by one of the two adsorption members 14 on the protrusion is greater than that of the other, thereby adjusting the grille assembly from a closed state to an open state. Furthermore, when the blade 11 is swinging, the center of gravity of the protrusion 112 shifts. By adjusting the current of the two adsorption members 14, the protrusion 112 can be maintained in another balanced position to adjust the opening degree of the blade 11.

[0079] Figure 5 This is a schematic diagram of another illustrative embodiment of the grille assembly, showing the drive element.

[0080] According to embodiments of this disclosure, such as Figure 5 As shown, the actuation unit includes a drive member 15, which is configured to be connected to the rotation shaft 12 and is adapted to drive the blade body 111 to oscillate about the axis of the rotation shaft 12.

[0081] In one illustrative embodiment, such as Figure 5 As shown, the actuation unit also includes a transmission member disposed between the output end of the drive member 15 and the rotating shaft 12. Specifically, the transmission member is adapted to transmit the torque output by the drive member 15 to the rotating shaft 12 so that the rotating shaft 12 and the blade 11 rotate at the same speed.

[0082] In one illustrative embodiment, the drive element 15 includes, but is not limited to, a stepper motor. Furthermore, the transmission element includes, but is not limited to, a belt, pulley, or gear set.

[0083] In one illustrative embodiment, the opening of the grille assembly responds to the sway angle of the blade. For example, the position where the blade body 111 is unfolded horizontally corresponds to an opening of 0% for the grille assembly, and the position where the blade body 111 is unfolded vertically corresponds to an opening of 100% for the grille assembly. If the opening of the grille assembly is between 0% and 100%, then the sway angle of the blade body 111 is evenly divided into 100 parts, and each part corresponds to a sway angle that corresponds to 1% of the opening of the grille assembly.

[0084] In this implementation, when the grille assembly 1 responds to the operating speed signal and / or target cooling capacity signal output by the vehicle control system, the drive member 15 is adapted to drive the rotating shaft 12 and the blades to rotate coaxially and at the same speed, thereby adjusting the grille assembly from a closed state to an open state. Furthermore, by stopping the rotation of the drive member 15, the blades are held in a certain position to maintain the opening of the grille assembly.

[0085] Figure 6 This is a flowchart of a control method for an air conditioning device according to an illustrative embodiment of the present disclosure.

[0086] According to the control method of the air conditioning equipment provided in this disclosure, such as Figure 6 As shown, the process includes the following steps S110 and S120:

[0087] Step S110: Obtain the running direction of the rail vehicle;

[0088] Step S120: Adjust the opening direction of the air conditioning equipment's grille assembly based on the running direction of the rail vehicle.

[0089] The above step S120, adjusting the opening direction of the air conditioning equipment's grille assembly based on the running direction of the rail vehicle, includes step S121:

[0090] In step S121, the air conditioning equipment responds to the running direction signal output by the vehicle control system of the rail vehicle, and the blades of the configured grid assembly rotate clockwise or counterclockwise around the axis of the rotation shaft.

[0091] In this implementation, the grille assembly is suitable for adjusting a rail vehicle from a stopped state to a running state. The vehicle control system can determine the running direction of the rail vehicle in response to its running speed and / or acceleration, and generate a corresponding running direction signal. Based on this running direction signal, the grille assembly determines that, if adjusting from a closed state to an open state, the blades should rotate clockwise or counterclockwise.

[0092] In one illustrative embodiment, the control method for the air conditioning equipment further includes step S100, obtaining the cooling demand of the rail vehicle. Specifically, if the rail vehicle has a cooling demand, step S110 continues; otherwise, the cooling demand of the rail vehicle is obtained sequentially in a loop.

[0093] In this implementation, if the rail vehicle has no cooling requirement (e.g., the ambient temperature is low), the air conditioning equipment may be in a state of not running or operating at low power. In this case, there is no need to cool the condenser. Therefore, even if the rail vehicle is in operation, the grille assembly can be kept in a closed state.

[0094] According to embodiments of this disclosure, the control method for air conditioning equipment further includes the following steps S130 and S140:

[0095] Step S130: Obtain the running speed and target cooling capacity of the rail vehicle;

[0096] Step S140: Adjust the opening of the grille assembly of the air conditioning equipment based on the operating speed of the rail vehicle and / or the target cooling capacity.

[0097] In one illustrative embodiment, step S140, which adjusts the opening of the air conditioning unit's grille assembly based on the rail vehicle's operating speed and / or target cooling capacity, includes steps S141 and S144:

[0098] In step S141, the air conditioning equipment responds to the operating speed signal and / or target cooling capacity signal output by the vehicle control system of the rail vehicle, causing the blades of the grille assembly to rotate in the rotation direction given in step S120, so that the grille assembly opens to the initial opening degree in the opening direction; wherein, the initial opening degree is not limited to being obtained based on empirical values ​​and / or calculated values.

[0099] Step S142: The air conditioning unit responds to the target cooling capacity signal output by the vehicle control system by outputting a first opening degree;

[0100] Step S143: In response to the operating speed signal output by the vehicle control system, output a second opening degree as the target opening degree;

[0101] Step S144: Adjust the swing angle of the blades based on the target opening to adjust the grid assembly to the target opening.

[0102] According to embodiments of this disclosure, the opening adjustment of the grid assembly based on the target cooling capacity of the rail vehicle takes precedence over the operating speed of the rail vehicle.

[0103] In one illustrative embodiment, in step S142, the target cooling capacity signal is configured to be positively correlated with the target opening degree of the grille assembly, that is, the larger the target cooling capacity signal, the larger the target opening degree of the grille assembly. Further, in step S143, the operating speed signal is configured to be negatively correlated with the target opening degree of the grille assembly, that is, the larger the operating speed signal, the smaller the target opening degree of the grille assembly.

[0104] For details, please refer to Table 1 below, which shows the relationship between the target cooling capacity and the grille assembly opening:

[0105] Table 1. Relationship between target cooling capacity and grille assembly opening degree

[0106] Serial Number Target cooling capacity grille assembly opening 1 100％ 100％ 2 80％ 80％ 3 50％ 50％ 4 30％ 30％ 5 0％ 0％

[0107] Further details can be found in Table 2 below, which shows the relationship between operating speed and the opening degree of the grille assembly:

[0108] Table 2 Relationship between operating speed and grille assembly opening

[0109] Serial Number Operating speed (km / h) Opening of the grille assembly 1 300-360 -20％ 2 200-299 -15％ 3 100-199 -10％ 4 50-99 -5％ 5 0-49 0％

[0110] In one illustrative embodiment, the direction of travel of the rail train is configured as follows: Figure 1 As shown, the direction from left to right has an operating speed of 260 km / h and a target cooling capacity of 80%.

[0111] In this configuration, the blades of the grille assembly should be configured to rotate counterclockwise in response to the direction of travel of the train, so that the right end of the blade is higher than the left end, forming a windward surface. Based on the target cooling capacity of the train, the first opening of the grille assembly can be configured to 80%, and based on the train's speed, the second opening can be further configured to 65% as the target opening. This way, the cooling requirements of the train are met without significantly increasing resistance to its operation.

[0112] Furthermore, since the operating speed and cooling requirements of rail trains are dynamically changing (e.g., rail trains may briefly slow down when passing through certain areas and / or passenger numbers may change at certain intermediate stations), a target opening range can be set based on the target opening to prevent the grille assembly from frequently adjusting in response to brief changes in the operating signals of the rail vehicle. Specifically, this target opening range includes, but is not limited to, being configured with the target opening as the lower limit and a first opening as the upper limit, allowing the grille assembly to be adjusted to any value within this target opening range.

[0113] In another illustrative embodiment, the direction of travel of the rail train is configured as follows: Figure 1 As shown, the direction from left to right has an operating speed of 320 km / h and a target cooling capacity of 100%.

[0114] In this state, the blades of the grille assembly should be configured to rotate counterclockwise in response to the direction of travel of the railcar, so that the right end of the blade is higher than the left end, forming a windward surface. Based on the target cooling capacity of the railcar, the first opening of the grille assembly can be configured to 100%, while based on the railcar's operating speed, the second opening of the grille assembly can be further configured to 80% based on the first opening, thus not generating significant resistance to the railcar's operation.

[0115] Furthermore, during the operation of the rail vehicle, since the target cooling capacity signal is constructed to be positively correlated with the target opening degree of the grille assembly, while the operating speed signal is constructed to be negatively correlated with the target opening degree of the grille assembly, the target opening degree of the grille assembly should respond to both the first and second opening degrees. Therefore, in certain extreme scenarios (such as when the carriages are fully loaded and the rail vehicle's operating speed is also high), since the second opening degree configured based on the rail train's operating speed is smaller than the first opening degree configured based on the target cooling capacity, the first opening degree takes precedence over the second opening degree. Therefore, it is advisable to select the first opening degree as the target opening degree of the grille assembly (i.e., to meet the cooling needs of the rail train).

[0116] It should also be noted that the directional terms mentioned in the embodiments, such as "up," "down," "front," "back," "left," and "right," are only for reference to the directions in the accompanying drawings and are not intended to limit the scope of protection of this disclosure. Throughout the drawings, the same elements are represented by the same or similar reference numerals. Conventional structures or constructions will be omitted where they may cause confusion in understanding this disclosure.

[0117] The embodiments of this disclosure have been described above. However, these embodiments are for illustrative purposes only and are not intended to limit the scope of this disclosure. Although various embodiments have been described above, this does not mean that the measures in the various embodiments cannot be used advantageously in combination. The scope of this disclosure is defined by the appended claims and their equivalents. Various substitutions and modifications can be made by those skilled in the art without departing from the scope of this disclosure, and all such substitutions and modifications should fall within the scope of this disclosure.

Claims

1. An air conditioning apparatus characterized by comprising: The application relates to a grille assembly (1) for a rail vehicle, comprising: an air conditioner main body provided with a condenser (2); and a grille assembly (1) covering the outer side of the condenser (2) and arranged on the outer surface of the rail vehicle, having a closed state for shielding the condenser (2) from the inner side of the rail vehicle and an open state for exposing the condenser (2) to allow air flow through the outer side of the rail vehicle to exchange heat with the condenser (2); wherein the grille assembly (1) is configured to adjust the opening direction of the grille assembly (1) in response to the running direction of the rail vehicle to guide the air flow through the outer side of the condenser (2); the grille assembly (1) is further configured to adjust the opening degree of the grille assembly (1) in the open state in response to the running speed of the rail vehicle and / or the target refrigeration capacity, and the grille assembly (1) comprises: a frame (13) defining an air inlet in the frame (13); a plurality of blades (11) arranged in parallel and spaced apart in the air inlet, each blade (11) being configured to swing between a closed position engaging with the outer edge of an adjacent blade (11) and an open position forming a gap with the adjacent blade (11); and an actuating part configured to drive at least part of the blades (11) to swing between the closed position and the open position, so that the grille assembly (1) has the closed state and the open state in response to the position of the blades (11).

2. The air conditioning apparatus according to claim 1, wherein The actuating part is further configured to drive the blades (11) to swing clockwise or counterclockwise around the axis of the blades (11) in response to the running direction of the rail vehicle.

3. The air conditioning apparatus according to claim 1, wherein The actuating part is further configured to drive the blades (11) to remain at any position between the closed position and the open position in response to the running speed of the rail vehicle and the target refrigeration capacity.

4. The air conditioning apparatus according to claim 2 or 3, wherein The grille assembly (1) further comprises a rotating shaft (12), both ends of the rotating shaft (12) in the axial direction are pivotally mounted to the two opposite sides of the frame (13); the blade (11) is sleeved on the outer side of the rotating shaft (12) and is configured to rotate coaxially with the rotating shaft (12).

5. The air conditioning apparatus according to claim 4, wherein The blade (11) comprises a blade body (111), both sides of the blade body (111) serve as the outer edge of the blade (11) and are adapted to abut against another adjacent blade (11), and one side of the blade (11) located in the frame (13) is provided with a protruding part (112) protruding outward in the radial direction of the rotating shaft (12); the actuating part comprises suction members (14) arranged on both sides of the protruding part (112), at least one of the two suction members (14) is magnetically attached in response to the running direction of the rail vehicle to attract the protruding part (112) and make the blade body (111) swing around the axis of the rotating shaft (12).

6. The air conditioning apparatus according to claim 5, wherein The actuating part comprises a driving member (15) configured to be connected with the rotating shaft (12) and adapted to drive the blade body (111) to swing around the axis of the rotating shaft (12).

7. A rail vehicle, characterized by The air conditioning equipment is configured as claimed in any one of claims 1 to 6. The grille assembly (1) of the air conditioning equipment is arranged on the top surface (3) of the railway vehicle.

8. A rail vehicle according to claim 7, characterised in that The vehicle control system adapted to acquire the operation signal of the railway vehicle is further configured, and the vehicle control system and the air conditioning equipment are in communication connection. The operation signal of the railway vehicle includes at least one of the operation direction signal, the operation speed signal and the target refrigeration capacity signal of the railway vehicle.

9. A rail vehicle according to claim 8, characterised in that The air conditioning equipment adjusts the opening direction of the grille assembly (1) of the air conditioning equipment in response to the operation direction signal.

10. A rail vehicle according to claim 8, characterised in that The air conditioning equipment adjusts the opening degree of the grille assembly (1) of the air conditioning equipment in response to the operation speed signal and / or the target refrigeration capacity signal.

11. A control method for an air conditioning apparatus according to any one of claims 1 to 6, characterized by, It comprises: acquiring the operation direction of the railway vehicle; and adjusting the opening direction of the grille assembly of the air conditioning equipment based on the operation direction of the railway vehicle. It further comprises:

12. The control method according to claim 11, characterized by, acquiring the operation speed and the target refrigeration capacity of the railway vehicle; and adjusting the opening degree of the grille assembly of the air conditioning equipment based on the operation speed and / or the target refrigeration capacity of the railway vehicle. The adjustment of the opening degree of the grille assembly based on the target refrigeration capacity of the railway vehicle is prior to the operation speed of the railway vehicle. ​ 13. The control method according to claim 12, characterized by, ​

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