Air supply adjusting system and method for air conditioning unit, and rail vehicle

Abstract

An air supply adjusting system and method for an air conditioning unit, and a rail vehicle. The method comprises the following steps: acquiring current temperatures and air return port temperatures of passenger compartments; calculating an average temperature T1 of the passenger compartments on the basis of the current temperatures of the passenger compartments, and calculating an average temperature T2 of air return ports on the basis of the air return port temperatures of the passenger compartments; on the basis of the average temperature T1 of the passenger compartments, the average temperature T2 of the air return ports, and a weight coefficient k, performing weighted calculation to obtain an actual temperature Tactual of each passenger compartment; and comparing the actual temperature Tactual of each passenger compartment with a preset temperature Tpreset, and controlling operation parameters of an air conditioning unit on the basis of a comparison result. Compared with the prior art, the air supply adjusting system and method for the air conditioning unit, and the rail vehicle provided in the present application have the advantages that energy consumption outputted by the air conditioning unit meets load requirements in the vehicle, energy waste is avoided, and energy consumption of the whole system is reduced.

Description

Air conditioning unit air supply adjustment system, method and rail vehicle

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on November 29, 2023, with application number 202311622706.7 and invention name “Air conditioning unit air supply adjustment system, method and rail vehicle”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the technical field of rail vehicles, and more specifically, to an air supply adjustment system and method for an air conditioning unit, and a rail vehicle. Background Art

[0003] The air conditioning and ventilation system can provide a comfortable riding environment for the passenger compartment of rail transit vehicles. As an indispensable component of the passenger compartment, its performance directly affects the riding comfort of passengers.

[0004] As passengers' comfort demands grow, maintaining human comfort in the enclosed environment of vehicles is an essential requirement for air conditioning units. Conventional air conditioning units typically deliver a fixed air volume. This can easily lead to inconsistencies between the vehicle's load demand and the air conditioning unit's output load under varying environmental conditions and passenger compartment load distribution, increasing energy consumption for air conditioning within the vehicle.

[0005] Therefore, there is an urgent need for an air supply adjustment system and method for an air conditioning unit and a rail vehicle, so that the energy consumption output by the air conditioning unit meets the load requirements in the vehicle, avoids energy waste, and reduces the energy consumption of the entire machine.

[0006] Summary of the Invention

[0007] In order to solve the above technical problems, the present application provides an air supply adjustment system and method for an air conditioning unit and a rail vehicle, so that the energy consumption output by the air conditioning unit meets the load requirements in the vehicle, avoids energy waste, and reduces the energy consumption of the entire machine.

[0008] The technical solutions provided in this application are as follows:

[0009] A method for regulating air supply of an air conditioning unit is provided for use in a rail vehicle, wherein the rail vehicle comprises at least two passenger compartments, each of which is provided with a return air outlet. The method comprises the following steps:

[0010] Get the current temperature of each passenger compartment and the return air outlet temperature;

[0011] The average passenger compartment temperature T1 is calculated based on the current temperature of each passenger compartment, and the average return air outlet temperature T2 is calculated based on the return air outlet temperature of each passenger compartment;

[0012] Perform weighted calculation based on the passenger compartment average temperature T1, the return air outlet average temperature T2, and the weight coefficient k to obtain the actual passenger compartment temperature Tact;

[0013] According to the actual temperature Tactual and the preset temperature Tpreset of the passenger compartment, the operating parameters of the air conditioning unit are controlled according to the comparison result;

[0014] Based on the current temperature T1 of each passenger compartment and the preset temperature Tpre, the air supply volume of each passenger compartment is adjusted.

[0015] Preferably, adjusting the air supply volume of each passenger compartment based on the current temperature of each passenger compartment and the preset temperature includes the following steps:

[0016] Calculate the temperature deviation between the current temperature and the preset temperature of a single passenger compartment;

[0017] Determining whether the temperature deviation is greater than a first preset temperature difference, and if not, maintaining the current air supply volume of the passenger compartment unchanged;

[0018] If so, the air supply volume of the current passenger compartment is increased until the temperature deviation value is less than the second preset temperature difference and maintained for a preset time, thereby maintaining the air supply volume.

[0019] Preferably, a weighted calculation is performed based on the passenger compartment temperature T1, the return air outlet temperature T2 and the weight coefficient k to obtain the actual passenger compartment temperature, specifically: The actual passenger compartment temperature T 实 =T1*k+T2*(1-k).

[0020] Preferably, when the air-conditioning unit is in heating mode, the weight coefficient ranges from 0.6 to 0.9;

[0021] When the air-conditioning unit is in cooling mode, the weight coefficient ranges from 0.2 to 0.3.

[0022] An air supply conditioning system for an air conditioning unit is used in a rail vehicle, wherein the rail vehicle includes at least two passenger compartments, each of which is provided with a return air outlet. The system comprises:

[0023] a temperature acquisition module, configured to acquire the current temperature of each passenger compartment and the return air outlet temperature of the return air outlet;

[0024] A first calculation module, configured to calculate an average passenger compartment temperature based on the current temperature and an average return air outlet temperature based on the return air outlet temperature;

[0025] A weighted calculation module, configured to obtain the actual passenger compartment temperature based on the passenger compartment average temperature, the return air outlet average temperature, and a weight coefficient;

[0026] a comparison control module, configured to compare the actual passenger compartment temperature Tactual with the preset temperature Tpreset, and control the operating parameters of the air conditioning unit according to the comparison result;

[0027] The adjustment module is used to adjust the air supply volume of each passenger compartment based on the current temperature and preset temperature of each passenger compartment.

[0028] Preferably, the adjustment module includes:

[0029] The second calculation module is used to calculate the temperature deviation between the current temperature and the preset temperature of the single passenger compartment;

[0030] The first judgment control module is used to maintain the air supply volume of the current passenger compartment unchanged under the premise that the temperature deviation value is not greater than the first preset temperature difference;

[0031] The second judgment control module is used to increase the air supply volume of the current passenger compartment under the premise that the temperature deviation value is greater than the first preset temperature difference, until the temperature deviation value is less than the second preset temperature difference and maintained for a preset time, thereby maintaining the air supply volume.

[0032] A rail vehicle adopts the above-mentioned air supply adjustment system of the air conditioning unit, the rail vehicle includes at least two passenger compartments, each passenger compartment is provided with a return air outlet, the passenger compartment is provided with a first temperature sensor, the first temperature sensor is used to obtain the current temperature of the passenger compartment, and the return air outlet is provided with a second temperature sensor, the second temperature sensor is used to obtain the return air outlet temperature.

[0033] Preferably, it also includes:

[0034] The main air duct connected to the air outlet of the air conditioning unit;

[0035] a cold air duct and a hot air duct connected to the main air duct, wherein the air outlet of the cold air duct is arranged at the top of the passenger compartment, and the air outlet of the hot air duct is arranged at the bottom of the passenger compartment;

[0036] The regulating mechanism is arranged at the outlet end of the main air duct, and the regulating structure is used to transport the air volume in the main air duct to the cold air duct and the hot air duct respectively according to a preset ratio.

[0037] Preferably, the air conditioning unit has a heating mode, a cooling mode and a ventilation mode;

[0038] When the air conditioning unit is in heating mode, all the hot air in the main air duct is transported to the hot air duct through the regulating mechanism;

[0039] When the air conditioning unit is in cooling mode, all the cold air in the main air duct is transported to the cold air duct through the regulating mechanism;

[0040] When the air conditioning unit is in ventilation mode, the air in the main air duct is transported to the cold air duct and the hot air duct through the regulating mechanism.

[0041] Preferably, at least two groups of main air ducts are provided, and a distribution valve is provided between the main air duct and the air outlet of the air conditioning unit, and the distribution valve is used to adjust the air volume delivered by the air conditioning unit into the main air duct;

[0042] When the temperature deviation value of the first passenger compartment is greater than the first preset temperature difference, the second judgment control module controls the distribution valve to increase the proportion of air volume delivered to the first main air duct until the temperature deviation value is less than the second preset temperature difference and maintained for a preset time, thereby maintaining the air supply volume.

[0043] The air supply adjustment method of the air conditioning unit provided by the present invention is used in a rail vehicle, wherein the rail vehicle includes at least two passenger compartments, each of which is provided with a return air outlet. The adjustment method comprises the following steps: obtaining the current temperature of each passenger compartment and the return air outlet temperature, calculating the average passenger compartment temperature T1 according to the current temperature of each passenger compartment, and calculating the average return air outlet temperature T2 according to the return air outlet temperature of each passenger compartment; performing weighted calculation based on the average passenger compartment temperature T1, the average return air outlet temperature T2 and a weight coefficient k to obtain the actual passenger compartment temperature T 实 ; Compare the actual temperature of the passenger room T 实 And the preset temperature T 预 The comparison results are used to control the operating parameters of the air conditioning unit. This ensures that the total load output by the air conditioning unit meets the total load requirements of the passenger compartments. The air supply volume to each passenger compartment is adjusted based on the current and preset temperatures of each passenger compartment to ensure that the temperature in each passenger compartment reaches the preset temperature. Thus, compared to the prior art, the air supply adjustment method for the air conditioning unit in this embodiment of the present invention ensures that the energy consumption output by the air conditioning unit meets the load requirements of the vehicle, avoiding energy waste and reducing overall energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0045] FIG1 is a flow chart of a method for adjusting air supply of an air conditioner provided by an embodiment of the present invention;

[0046] FIG2 is a structural diagram of an air supply regulating system for an air conditioning unit provided by an embodiment of the present invention;

[0047] FIG3 is a schematic structural diagram of a double-deck EMU vehicle provided in an embodiment of the present invention.

[0048] Description of the accompanying drawings: 1. Upper passenger compartment; 2. Lower passenger compartment; 3. Middle passenger compartment; 41. Hot air duct; 42. Cold air duct; 5. First temperature sensor. DETAILED DESCRIPTION

[0049] In order to help those skilled in the art better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making any creative efforts shall fall within the scope of protection of this application.

[0050] It should be noted that when an element is referred to as being “fixed on” or “set on” another element, it can be directly on the other element or indirectly set on the other element; when an element is referred to as being “connected to” another element, it can be directly connected to the other element or indirectly connected to the other element.

[0051] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0052] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. Throughout the description of this application, "plurality" or "several" means two or more, unless otherwise specifically defined.

[0053] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the efficacy and purpose that can be achieved by this application.

[0054] The embodiments of the present invention are written in a progressive manner.

[0055] As shown in FIG1 to FIG3, an embodiment of the present invention provides an air supply adjustment method for an air conditioning unit, which is used in a rail vehicle. The rail vehicle includes at least two passenger compartments, each of which is provided with a return air outlet;

[0056] Specifically, the rail vehicle in this embodiment is a double-decker EMU vehicle, comprising an upper passenger compartment 1, a lower passenger compartment 2, and an intermediate passenger compartment 3. The upper passenger compartment 1 and the lower passenger compartment 2 are the upper and lower layers of the EMU vehicle, and there are two intermediate passenger compartments, one on each side of the upper passenger compartment 1. The intermediate passenger compartment is a single-layer passenger compartment. A first temperature sensor 5 is provided in each of the upper passenger compartment 1, the lower passenger compartment 2, and the intermediate passenger compartment 3, and a second temperature sensor is provided at the return air outlet of each passenger compartment. The present invention is described in detail using a double-decker EMU vehicle as an example, but the air supply adjustment method for an air conditioning unit provided by the present invention can also be applied to other rail vehicles.

[0057] It should be noted that the upper passenger compartment, the lower passenger compartment and the middle passenger compartment in this embodiment are three different passenger compartment areas located in the same carriage, and a rail vehicle is provided with multiple carriages.

[0058] The air supply adjustment method of the air conditioning unit provided by the present invention comprises the following steps:

[0059] S100, obtaining the current temperature of each passenger compartment and the return air outlet temperature;

[0060] Specifically, the current temperature of each guest room is the temperature of the guest room measured by the first sensor, and the return air outlet temperature is the temperature of the return air outlet measured by the second sensor. In order to know the current temperature of each guest room more accurately, at least two first temperature sensors 5 are provided in a single guest room in this embodiment. At this time, the current temperature of each guest room is specifically the average temperature of the first temperature sensors 5 in the single guest room. There is at least one return air outlet in a single guest room. When there are at least two return air outlets in a single guest room, the return air outlet temperature is specifically the average value of the second temperature sensors.

[0061] S200, calculating an average passenger compartment temperature T1 based on the current temperature of each passenger compartment, and calculating an average return air outlet temperature T2 based on the return air outlet temperature of each passenger compartment;

[0062] The average passenger compartment temperature T1 is calculated by averaging the current temperatures of each passenger compartment, and the average return air outlet temperature T2 is calculated by averaging the return air outlet temperatures of each passenger compartment. Specifically, two first temperature sensors 5 are respectively installed in the upper passenger compartment 1 and the lower passenger compartment 2, and one temperature sensor is respectively installed in the middle passenger compartments 3 at both ends. The average passenger compartment temperature here is the average of the temperatures measured by the six first temperature sensors 5. The average return air outlet temperature T2 is the average of the temperatures measured by the second temperature sensors in all passenger compartments.

[0063] S300, perform weighted calculation based on the average passenger compartment temperature T1, the average return air outlet temperature T2 and the weight coefficient k to obtain the actual passenger compartment temperature T 实 ;

[0064] Specifically, according to the different locations of the temperature sensors, it is necessary to perform weighted calculation on the average passenger compartment temperature T1 and the average return air outlet temperature T2 to obtain the actual passenger compartment temperature T 实 Specifically, in heating mode, the air conditioning unit outputs hot air, and the temperature of the upper passenger compartment is higher than that of the lower passenger compartment. In cooling mode, the air conditioning unit outputs cold air, and the temperature of the lower passenger compartment is higher than that of the upper passenger compartment. Therefore, in different modes, the position of the first temperature sensor 5 is different, resulting in a deviation between the first temperature sensor 5 and the actual passenger compartment temperature. In order to correct the temperature measured by the first temperature sensor 5, a weighted calculation is performed on the average passenger compartment temperature T1 and the average return air outlet temperature T2 to obtain the actual passenger compartment temperature T 实 , which can more objectively reflect the actual temperature in the guest room.

[0065] S400, according to the actual temperature T of the passenger compartment 实 And the preset temperature T 预 The size of the air-conditioning unit is controlled according to the comparison result;

[0066] Specifically, in order to avoid energy waste caused by the output load of the air-conditioning unit failing to meet the demand of the passenger room, or the output load of the air-conditioning unit being too large, the actual temperature T 实 And the preset temperature T 预 In heating mode, if the actual room temperature T 实 Greater than the preset temperature T 预 , it indicates that the output load of the air-conditioning unit is too large. You can reduce the output load of the air-conditioning unit and reduce the energy consumption of the air-conditioning unit. If the actual room temperature T 实 Less than the preset temperature T 预 , it indicates that the output load of the air-conditioning unit is insufficient. The output load of the air-conditioning unit can be increased to meet the needs of the passenger room and ensure the comfort of the passenger room. If the actual temperature of the passenger room is T 实 Equal to the preset temperature T预 , there is no need to adjust the output load of the air conditioning unit.

[0067] S500, based on the current temperature T1 of each passenger compartment and the preset temperature T 预 , adjust the air supply volume of each guest room.

[0068] Specifically, when the load of the entire air-conditioning unit meets the overall demand of the vehicle, the current temperature T1 of each passenger compartment and the preset temperature T 预 , adjust the air volume delivered by the air-conditioning unit to each passenger compartment so that the temperature of each passenger compartment can reach the preset temperature, thereby improving the temperature uniformity of the passenger compartment and the riding comfort of the passengers.

[0069] It should be noted that the air supply adjustment of the air-conditioning unit in this embodiment is to adjust the temperature of different areas in a carriage, thereby improving the uniformity of the temperature in the carriage.

[0070] Furthermore, as one embodiment, the method of adjusting the air supply volume of each passenger compartment based on the current temperature and the preset temperature of each passenger compartment in the embodiment of the present invention includes the following steps:

[0071] Calculate the temperature deviation between the current temperature and the preset temperature of a single passenger compartment;

[0072] Specifically, in this embodiment, the current temperature and the preset temperature detected by the first temperature sensor 5 in a single passenger compartment are calculated. If at least two first temperature sensors 5 are provided in a single passenger compartment, the current temperature is the average value of the temperatures measured by the first temperature sensors 5 in the single passenger compartment. The temperature deviation value between the current temperature and the preset temperature of the single passenger compartment is calculated.

[0073] Determine whether the temperature deviation is greater than a first preset temperature difference; if not, maintain the current air supply volume of the passenger compartment unchanged;

[0074] Specifically, it is determined whether the temperature deviation value is greater than a first preset temperature difference. If the temperature deviation value is less than the first preset temperature difference, the air supply volume of the current passenger compartment is kept unchanged.

[0075] If so, the airflow volume for the current passenger compartment is increased until the temperature deviation is less than the second preset temperature difference and maintained for a preset time, maintaining the airflow volume. If the temperature deviation is greater than the first preset temperature difference, indicating that the current passenger compartment temperature has not reached the target, the airflow volume for the current passenger compartment is increased until the temperature deviation is less than the second preset temperature difference and maintained for a preset time, maintaining the airflow volume.

[0076] As one specific implementation method, in this embodiment, the first preset temperature difference is 2K, the second preset temperature difference is 2K, and the preset time is 120S. In the heating state, if the preset temperature T 预 The current temperature of the upper passenger compartment 1 is 298K, and the current temperature of the upper passenger compartment 1 is 295K. The temperature deviation between the two is 3K, which is greater than the first preset temperature difference. It is necessary to increase the air supply volume of the current passenger compartment to increase the temperature of the upper passenger compartment 1. When the current temperature of the upper passenger compartment 1 is 297.5K and maintained for 120S, the air supply volume is kept unchanged.

[0077] As one of the implementation modes, the second preset temperature difference in the embodiment of the present invention is smaller than the first preset temperature difference. This is because after increasing the air supply volume, the indoor air is unstable during the accelerated flow process. If the first preset temperature difference is equal to the second preset temperature difference, the indoor temperature may not be evenly distributed. When the second preset temperature difference is smaller, the detected temperature is closer to the preset temperature, and the indoor temperature tends to be more uniform.

[0078] Furthermore, first determine whether the current load of the air-conditioning unit can meet the load required by the vehicle. If not, increase the air-conditioning output load, and then judge the temperature of each passenger compartment. If the upper passenger compartment 1 and the lower passenger compartment 2 both meet the first preset temperature difference, there is no need to increase the air volume. The middle passenger compartment 3 is greater than the first preset temperature difference and needs to increase the air volume. Then, increase the air volume generated by the increased output load of the air conditioner to the middle passenger compartment 3 until the middle passenger compartment 3 meets the second preset temperature difference and maintains the preset time, and maintains its air volume unchanged.

[0079] In the above method, as one of the implementation methods, in this embodiment, a weighted calculation is performed based on the passenger compartment temperature T1, the return air outlet temperature T2 and the weight coefficient k to obtain the actual passenger compartment temperature, specifically: the actual passenger compartment temperature T 实 =T1*k+T2*(1-k).

[0080] Furthermore, the weight coefficient is related to the working mode of the air-conditioning unit and the location of the first temperature sensor 5. When the air-conditioning unit is in heating mode, the weight coefficient ranges from 0.6 to 0.9; when the air-conditioning unit is in cooling mode, the weight coefficient ranges from 0.2 to 0.3.

[0081] Furthermore, the first temperature sensor 5 in the embodiment of the present invention is arranged below the seat to detect the temperature in the passenger compartment.

[0082] As shown in FIG2 , the present invention further provides an air supply control system for an air conditioning unit, which is used in a rail vehicle. The rail vehicle includes at least two passenger compartments, each of which is provided with a return air outlet. The system includes: a temperature acquisition module for acquiring the current temperature of each passenger compartment and the return air outlet temperature of the return air outlet; a first calculation module for calculating the average temperature of the passenger compartment based on the current temperature and the average temperature of the return air outlet based on the return air outlet temperature; a weighted calculation module for obtaining the actual temperature of the passenger compartment based on the average temperature of the passenger compartment, the average temperature of the return air outlet, and a weight coefficient; and a comparison control module for comparing the actual temperature Tactual of the passenger compartment with the preset temperature T 预 The size of the air conditioner is compared with the air conditioner, and the operating parameters of the air conditioner are controlled according to the comparison result; the adjustment module is used to adjust the air supply volume of each passenger compartment based on the current temperature and preset temperature of each passenger compartment.

[0083] Furthermore, as one of the implementation methods, the adjustment module in the embodiment of the present invention includes: a second calculation module, which is used to calculate the temperature deviation value between the current temperature and the preset temperature of a single passenger compartment based on the two; a first judgment and control module, which is used to keep the supply air volume of the current passenger compartment unchanged on the premise that the temperature deviation value is not greater than the first preset temperature difference; and a second judgment and control module, which is used to increase the supply air volume of the current passenger compartment on the premise that the temperature deviation value is greater than the first preset temperature difference, until the temperature deviation value is less than the second preset temperature difference and maintained for a preset time, thereby maintaining the supply air volume.

[0084] The present invention also provides a rail vehicle, which adopts the above-mentioned air supply adjustment system of the air conditioning unit. The rail vehicle includes at least two passenger compartments, each of which is provided with a return air outlet. A first temperature sensor 5 is provided in the passenger compartment, and the first temperature sensor 5 is used to obtain the current temperature of the passenger compartment. A second temperature sensor is provided at the return air outlet, and the second temperature sensor is used to obtain the return air outlet temperature.

[0085] Furthermore, as one embodiment, to avoid measurement errors, at least two first temperature sensors 5 are provided in a passenger compartment in the embodiment of the present invention, and the current temperature of the passenger compartment is specifically the average of the temperatures measured by the first temperature sensors 5 in the passenger compartment. The number of first temperature sensors 5 provided can be selected based on the size of the passenger compartment.

[0086] Furthermore, as one embodiment, a passenger compartment is provided with at least two return air vents, each return air vent is provided with a second temperature sensor, and the return air vent temperature in the embodiment of the present invention is the average temperature measured by the second temperature sensor in a single passenger compartment.

[0087] By arranging two or more first temperature sensors 5 and second temperature sensors in one passenger compartment and calculating an average value, the temperature can be reflected more objectively.

[0088] Furthermore, as one of the embodiments, the rail vehicle provided by the present invention also includes: a main air duct connected to the air outlet of the air-conditioning unit; a cold air duct 42 and a hot air duct 41 connected to the main air duct, the air outlet of the cold air duct 42 is arranged at the top of the passenger compartment, and the air outlet of the hot air duct 41 is arranged at the bottom of the passenger compartment; an adjusting mechanism is arranged at the outlet end of the main air duct, and the adjusting structure is used to transport the air volume in the main air duct to the cold air duct 42 and the hot air duct 41 respectively according to a preset ratio.

[0089] More specifically, since the density of hot air is lighter and the density of cold air is heavier, the outlet of the cold air duct 42 is set at the top of the passenger compartment, and the cold air flows to the bottom of the compartment. The hot air duct 41 is set at the bottom of the compartment. Since the density of hot air is small, the hot air flows to the top of the compartment. In this way, the air flow is further increased and the temperature of the passenger compartment is more uniform.

[0090] As one of the embodiments, the air-conditioning unit has a heating mode, a cooling mode and a ventilation mode; when the air-conditioning unit is in the heating mode, the hot air in the main air duct is all transported to the hot air duct 41 through the regulating mechanism; when the air-conditioning unit is in the cooling mode, the cold air in the main air duct is all transported to the cold air duct 42 through the regulating mechanism; when the air-conditioning unit is in the ventilation mode, the air in the main air duct is transported to the cold air duct 42 and the hot air duct 41 through the regulating mechanism.

[0091] Specifically, the adjustment mechanisms in the embodiment of the present invention are arranged in pairs, and the adjustment mechanisms are respectively arranged in the cold air duct 42 and the hot air duct 41. The following is an explanation taking the adjustment mechanism in the cold air duct 42 as an example. The adjustment mechanism includes a baffle, a rotating shaft and a baffle adjustment member, wherein the rotating shaft is fixedly arranged in the cold air duct 42, the baffle is rotatably arranged on the rotating shaft, and the baffle adjustment member is used to drive the baffle to rotate around the axial direction of the rotating shaft. When the baffle is parallel to the air duct cross-section, the cold air duct 42 is in an open state, and the cold air in the main air duct can enter the passenger compartment through the cold air duct 42. When the baffle is perpendicular to the air duct cross-section, the cold air duct 42 is in a closed state. When the angle between the baffle and the air duct cross-section is 0° to 90°, the cold air duct 42 is in an open state, and the amount of air entering the cold air duct 42 can be adjusted by adjusting the angle between the baffle and the air duct cross-section.

[0092] Furthermore, the baffle adjusting member drives the baffle to rotate around the axis of the rotating shaft within an angle range of 0° to 90°.

[0093] Furthermore, when the air-conditioning unit is in heating mode, the cold air duct 42 is in a closed state, the hot air duct 41 is in an open state, and the hot air in the main air duct is sent into the hot air duct 41; when the air-conditioning unit is in cooling mode, the cold air duct 42 is in an open state, the hot air duct 41 is in a closed state, and the cold air in the main air duct is sent into the cold air duct 42; when the air-conditioning unit is in ventilation mode, the air in the main air duct can enter the cold air duct 42 and the hot air duct 41 according to a preset ratio.

[0094] As one embodiment, the present invention provides at least two main air ducts. A damper and a damper adjustment member are provided between each main air duct and the air outlet of the air conditioning unit. The damper adjustment member is used to adjust the opening of the damper. If the damper provided on the first main air duct has a large opening, the air volume entering the first main air duct from the air conditioning unit is large. Furthermore, the damper adjustment member is connected to a first judgment control module. Under the premise that the temperature deviation value is not greater than a first preset temperature difference, the damper adjustment member is maintained, thereby maintaining the air supply volume of the current passenger compartment unchanged. The damper adjustment member is connected to a second judgment control module. Under the premise that the temperature deviation value is greater than the first preset temperature difference, the second judgment control module controls the damper adjustment member to increase the opening of the damper, thereby increasing the air volume entering the passenger compartment. Until the temperature deviation value is less than the second preset temperature difference and is maintained for a preset time, the second judgment control valve controls the damper adjustment member to maintain the current damper opening, thereby maintaining the air supply volume.

[0095] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for regulating air supply of an air conditioning unit, characterized in that: Used in a rail vehicle, the rail vehicle includes at least two passenger compartments, each of which is provided with a return air outlet, and the method includes the following steps: Get the current temperature of each passenger room and the return air outlet temperature; The average temperature T1 of each passenger compartment is calculated based on the current temperature of each passenger compartment, and the average temperature T2 of the return air outlet is calculated based on the return air outlet temperature of each passenger compartment; The actual temperature T of the passenger compartment is obtained by weighted calculation based on the average temperature T1 of the passenger compartment, the average temperature T2 of the return air outlet, and the weight coefficient k. 实 ; According to the actual passenger compartment temperature T 实 And the preset temperature T 预 The size of the air conditioner is controlled according to the comparison result; Based on the current temperature T1 of each passenger compartment and the preset temperature T 预 , adjust the air supply volume of each guest room.

2. The air supply adjustment method of the air conditioning unit according to claim 1, characterized in that: Based on the current temperature of each passenger compartment and the preset temperature, the air supply volume of each passenger compartment is adjusted, including the following steps: According to the current temperature of a single passenger compartment and the preset temperature, a temperature deviation value between the two is calculated; Determine whether the temperature deviation value is greater than a first preset temperature difference, and if not, keep the current air supply volume of the passenger compartment unchanged; If so, increase the air supply volume of the current passenger compartment until the temperature deviation value is less than the second preset temperature difference and is maintained for a preset time to maintain the air supply volume.

3. The air supply adjustment method of the air conditioning unit according to claim 1 or 2, characterized in that: A weighted calculation is performed according to the passenger compartment temperature T1, the return air outlet temperature T2 and the weight coefficient k to obtain the actual passenger compartment temperature, specifically: The actual temperature of the passenger compartment T 实 =T1*k+T2*(1-k).

4. The air supply adjustment method of an air conditioning unit according to claim 1 or 2, characterized in that: When the air conditioning unit is in heating mode, the weight coefficient ranges from 0.6 to 0.9; When the air-conditioning unit is in cooling mode, the weight coefficient ranges from 0.2 to 0.

3.

5. An air supply adjustment system for an air conditioning unit, characterized in that: Used in a rail vehicle, the rail vehicle includes at least two passenger compartments, each of which is provided with a return air outlet, and the system includes: A temperature acquisition module, used to acquire the current temperature of each of the passenger compartments and the return air outlet temperature of the return air outlet; A first calculation module, configured to calculate an average passenger compartment temperature according to the current temperature, and to calculate an average return air outlet temperature according to the return air outlet temperature; A weighted calculation module, used for obtaining the actual temperature of the passenger compartment according to the average temperature of the passenger compartment, the average temperature of the return air outlet and a weight coefficient; A comparison control module, used to compare the actual temperature Tactual of the passenger compartment with the preset temperature Tpreset, and control the operating parameters of the air conditioning unit according to the comparison result; The regulating module is used to regulate the air supply volume of each passenger compartment based on the current temperature and preset temperature of each passenger compartment.

6. The air supply adjustment system of the air conditioning unit according to claim 5, characterized in that: The adjustment module comprises: The second calculation module is used to calculate the temperature deviation value between the current temperature and the preset temperature of the single passenger compartment according to the current temperature and the preset temperature of the single passenger compartment; A first judgment control module is used to keep the air supply volume of the current passenger compartment unchanged under the premise that the temperature deviation value is not greater than the first preset temperature difference; The second judgment control module is used to increase the air supply volume of the current passenger compartment under the premise that the temperature deviation value is greater than the first preset temperature difference, until the temperature deviation value is less than the second preset temperature difference and maintained for a preset time, thereby maintaining the air supply volume.

7. A rail vehicle, using the air supply adjustment system of the air conditioning unit according to claim 5 or 6, characterized in that: The rail vehicle includes at least two passenger compartments, each of which is provided with a return air outlet. A first temperature sensor is provided in the passenger compartment, and the first temperature sensor is used to obtain the current temperature of the passenger compartment. A second temperature sensor is provided at the return air outlet, and the second temperature sensor is used to obtain the return air outlet temperature.

8. The rail vehicle according to claim 7, characterized in that: Also includes: A main air duct connected to the air outlet of the air conditioning unit; A cold air duct and a hot air duct are connected to the main air duct, and the air outlet of the cold air duct is arranged at The top of the passenger compartment, the air outlet of the hot air duct is arranged at the bottom of the passenger compartment; The regulating mechanism is arranged at the outlet end of the main air duct, and the regulating structure is used to transport the air volume in the main air duct to the cold air duct and the hot air duct respectively according to a preset ratio.

9. The rail vehicle according to claim 8, characterized in that The air conditioning unit has a heating mode, a cooling mode and a ventilation mode; When the air conditioning unit is in heating mode, all the hot air in the main air duct is transported to the hot air duct through the regulating mechanism; When the air conditioning unit is in cooling mode, all the cold air in the main air duct is transported to the cold air duct through the regulating mechanism; When the air conditioning unit is in ventilation mode, the air in the main air duct is transported to the cold air duct and the hot air duct through the regulating mechanism.

10. The rail vehicle according to claim 8, characterized in that The main air duct is provided with at least two groups, and a distribution valve is provided between the main air duct and the air outlet of the air conditioning unit, and the distribution valve is used to adjust the air volume delivered by the air conditioning unit into the main air duct; When the temperature deviation value of the first guest room is greater than the first preset temperature difference, the second judgment control module controls the distribution valve to increase the proportion of air volume delivered to the first main air duct until the temperature deviation value is less than the second preset temperature difference and maintained for a preset time, thereby maintaining the air volume.

Images