Vehicle air duct dust removal control method, ventilation control device, air conditioner and vehicle

Abstract

The invention discloses a vehicle air duct dust removal control method, a ventilation control device, an air conditioner and a vehicle. The air duct is physically connected with an air conditioner, the air conditioner comprises a draught fan, and the vehicle air duct dust removal control method suitable for the tunnel environment comprises the steps that after operation of a vehicle is finished, the concentration of fine particulate matter in the air duct is obtained; if the fine particulate matter concentration is higher than a first preset threshold value, the fan is controlled to enter a high-speed ventilation mode; in the process of executing the high-speed ventilation mode, if it is monitored that the fine particulate matter concentration is lower than a second preset threshold value, the fan is controlled to be switched to a low-speed ventilation mode; wherein the first preset threshold value is greater than the second preset threshold value. According to the technical scheme, after operation of the vehicle is finished, the concentration of the fine particulate matter in the air duct is monitored in real time, the ventilation mode of the fan is controlled according to the concentration of the fine particulate matter, and the problem that dust removal of the air duct is not thorough in the prior art is solved.

Description

Technical Field

[0001] This invention relates to the field of dust removal technology, and in particular to a method for controlling dust removal in vehicle ducts, a ventilation control device, an air conditioner, and a vehicle. Background Technology

[0002] With the rapid development of subway construction, many tunnel lines have been put into operation shortly after completion. However, due to residual dust from tunnel construction that has not been completely removed, some dust enters the air conditioning units with the return air when the train is running in the tunnel, penetrating the filters and accumulating in the passenger compartment's air ducts. When the train's ventilation system is operating, this accumulated dust is blown into the passenger compartment, affecting passenger comfort. Therefore, subway trains operating in tunnel environments must strengthen dust removal measures in the air ducts to ensure clean air in the passenger compartment.

[0003] Currently, the common dust removal method involves using air conditioning ventilation to blow dust out of the air ducts. The airflow carries the dust, some of which is expelled through the doors, some settles to the ground, and the remainder re-enters the air conditioning unit with the return air, passing through the mixing air filter before re-entering the air ducts. Therefore, existing ventilation solutions suffer from incomplete dust removal. Summary of the Invention

[0004] This invention provides a method for controlling dust removal in vehicle ducts, a ventilation control device, an air conditioner, and a vehicle, in order to solve the problem of incomplete dust removal in the prior art and improve the dust removal effect.

[0005] According to one aspect of the present invention, a vehicle duct dust removal control method suitable for tunnel environments is provided, wherein the duct is physically connected to an air conditioner, the air conditioner includes a fan, and the vehicle duct dust removal control method suitable for tunnel environments includes:

[0006] After the vehicle finishes operation, the concentration of fine particulate matter in the air duct is obtained;

[0007] If the concentration of fine particulate matter is higher than a first preset threshold, the fan is controlled to enter a high-speed ventilation mode.

[0008] During the execution of the high-speed ventilation mode, if the concentration of fine particulate matter is detected to be lower than the second preset threshold, the fan is controlled to switch to the low-speed ventilation mode; wherein the first preset threshold is greater than the second preset threshold.

[0009] Optionally, the high-speed ventilation mode includes:

[0010] The fan operates continuously at a high air volume.

[0011] Optionally, the high-speed ventilation mode includes:

[0012] The fan alternates between high-volume operation and shutdown; wherein the high-volume operation lasts for a first preset time and the shutdown operation lasts for a second preset time.

[0013] Optionally, the material of the mixing air filter of the fan includes non-woven filter media of G3 filtration grade.

[0014] Optionally, the vehicle duct dust control method suitable for tunnel environments further includes:

[0015] During vehicle operation, the fan is controlled to operate at a low air volume; wherein the fan speed during low air volume operation is lower than the fan speed during high air volume operation.

[0016] According to another aspect of the present invention, a vehicle duct dust removal control device suitable for tunnel environments is provided, wherein the duct is physically connected to an air conditioner, the air conditioner includes a fan, and the vehicle duct dust removal control device suitable for tunnel environments includes:

[0017] The fine particulate matter acquisition module is used to acquire the concentration of fine particulate matter in the air duct after the vehicle has finished operating.

[0018] A ventilation mode switching module is used to control the fan to enter a high-speed ventilation mode if the fine particulate matter concentration is higher than a first preset threshold; and to control the fan to switch to a low-speed ventilation mode if the fine particulate matter concentration is detected to be lower than a second preset threshold during the execution of the high-speed ventilation mode; wherein the first preset threshold is greater than the second preset threshold.

[0019] Optionally, the ventilation mode switching module includes:

[0020] A ventilation mode switching unit is used to control the alternation of high-volume operation and stop operation of the fan; wherein the high-volume operation lasts for a first preset time, and the stop operation lasts for a second preset time.

[0021] According to another aspect of the present invention, an air conditioner for a vehicle suitable for a tunnel environment is provided, the air conditioner for a vehicle suitable for a tunnel environment including a control module, the control module being used to execute the vehicle duct dust removal control method for a tunnel environment as described in any embodiment of the present invention.

[0022] According to another aspect of the present invention, a vehicle suitable for tunnel environments is provided, the vehicle including a controller for executing the vehicle duct dust removal control method for tunnel environments as described in any embodiment of the present invention.

[0023] The technical solution of this invention adopts a dynamically switching ventilation control strategy. Specifically, if the concentration of fine particulate matter is detected to be higher than a first preset threshold, the fan is controlled to enter a high-speed ventilation mode. In high-speed ventilation mode, dust is discharged from the duct. The change in the concentration of fine particulate matter in high-speed ventilation mode is continuously monitored. If the concentration of fine particulate matter is lower than a second preset threshold, the fan is controlled to switch from high-speed ventilation mode to low-speed ventilation mode. Specifically, triggering the high-speed ventilation mode when the concentration of fine particulate matter in the duct is higher than the first preset threshold can quickly remove the fine particulate matter accumulated in the duct, reducing the degree of dust accumulation in the lane. After achieving the cleaning target, it automatically switches to low-speed ventilation mode, which can reduce energy consumption and prevent dust that has been discharged from the duct from re-entering the duct, further reducing the amount of dust in the duct. Therefore, the technical solution of this invention, by monitoring the concentration of fine particulate matter in the duct in real time after the vehicle has finished operating and controlling the ventilation mode of the fan according to the concentration of fine particulate matter, solves the problem of incomplete dust removal in the duct in the prior art.

[0024] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 A flowchart of a vehicle ventilation duct dust control method suitable for tunnel environments provided in an embodiment of the present invention;

[0027] Figure 2 A flowchart of another vehicle duct dust removal control method suitable for tunnel environments provided by an embodiment of the present invention;

[0028] Figure 3 This is a schematic diagram of a vehicle ventilation duct dust removal control device suitable for tunnel environments, provided as an embodiment of the present invention. Detailed Implementation

[0029] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0030] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0031] Figure 1 This is a flowchart illustrating a vehicle duct dust removal control method suitable for tunnel environments, provided by an embodiment of the present invention. This embodiment is applicable to dust removal in vehicle ducts within tunnel environments, and the method can be executed by a dust removal device. Specifically, the duct is physically connected to an air conditioning system, which includes a fan, such as... Figure 1 As shown, the vehicle ventilation duct dust control method applicable to tunnel environments includes:

[0032] S110. After the vehicle stops operating, obtain the concentration of fine particulate matter in the air duct.

[0033] Specifically, fine particulate matter concentration can refer to the concentration of PM2.5 particles within the air duct. PM2.5 particles are extremely light and can remain suspended in the airflow for extended periods, making them difficult to remove through natural settling. Therefore, forced ventilation is necessary to reduce their concentration. For example, a fine particulate matter monitor inside the vehicle can be used to detect the concentration.

[0034] In this embodiment of the invention, performing dust removal operations on the vehicle's air ducts during non-operational hours avoids affecting passenger comfort. Obtaining the concentration of fine particulate matter within the air ducts quantifies the degree of contamination inside and determines whether to activate the next high-speed ventilation mode.

[0035] S120. If the concentration of fine particulate matter is higher than the first preset threshold, control the fan to enter the high-speed ventilation mode.

[0036] Specifically, the first preset threshold refers to the critical value of fine particulate matter concentration that triggers the high-speed ventilation mode. For example, the first preset threshold could be 100 μg / m³. 3 High-speed ventilation mode refers to the state in which the fan operates at a high air volume for part or all of the time. In high-speed ventilation mode, most fine particulate matter in the air duct can be flowed out of the air duct with the high-speed airflow.

[0037] In this embodiment of the invention, the high-speed airflow in the high-speed ventilation mode can blow out most of the dust suspended and attached in the air duct, shortening the cleaning time of high-concentration dust and improving efficiency.

[0038] S130. During the execution of high-speed ventilation mode, if the concentration of fine particulate matter is detected to be lower than the second preset threshold, the fan is controlled to switch to low-speed ventilation mode; wherein, the first preset threshold is greater than the second preset threshold.

[0039] Specifically, the second preset threshold refers to the critical value at which the concentration of fine particulate matter gradually decreases to trigger the low-speed ventilation mode under high-speed ventilation mode. For example, the first preset threshold could be 50 μg / m³. 3 Low-speed ventilation mode refers to the state in which the fan operates at a low air volume for part or all of the time. In low-speed ventilation mode, only a small portion of the fine particulate matter in the duct can flow out of the duct with the low-speed airflow.

[0040] In this embodiment of the invention, when the concentration of fine particulate matter in the duct decreases to below a second preset threshold, the fan is controlled to reduce to a low-speed ventilation mode. On the one hand, the low-speed ventilation mode can avoid the fan from running at high speed continuously, thus avoiding energy waste and extending the fan's lifespan. On the other hand, the low-speed ventilation mode can maintain basic airflow and prevent dust that has been discharged from the duct from re-entering the duct.

[0041] The technical solution of this invention adopts a dynamically switching ventilation control strategy. Specifically, if the concentration of fine particulate matter is detected to be higher than a first preset threshold, the fan is controlled to enter a high-speed ventilation mode. In high-speed ventilation mode, dust is discharged from the duct. The change in the concentration of fine particulate matter in high-speed ventilation mode is continuously monitored. If the concentration of fine particulate matter is lower than a second preset threshold, the fan is controlled to switch from high-speed ventilation mode to low-speed ventilation mode. Specifically, triggering the high-speed ventilation mode when the concentration of fine particulate matter in the duct is higher than the first preset threshold can quickly remove the fine particulate matter accumulated in the duct, reducing the degree of dust accumulation in the lane. After achieving the cleaning target, it automatically switches to low-speed ventilation mode, which can reduce energy consumption and prevent dust that has been discharged from the duct from re-entering the duct, further reducing the amount of dust in the duct. Therefore, the technical solution of this invention, by monitoring the concentration of fine particulate matter in the duct in real time after the vehicle has finished operating and controlling the ventilation mode of the fan according to the concentration of fine particulate matter, solves the problem of incomplete dust removal in the duct in the prior art.

[0042] Based on the above embodiments, the optional high-speed ventilation mode includes: continuous high-volume operation of the fan.

[0043] Specifically, high-airflow operation refers to the state in which the fan operates at its maximum or near-maximum speed, generating a high-speed airflow. High-airflow operation is used to powerfully remove dust from air ducts.

[0044] In this embodiment of the invention, experiments revealed that the concentration of fine particulate matter in the duct remained essentially unchanged during the period from when the fan stopped to when it started operating at low airflow. Specifically, a PM2.5 monitor detected that the PM2.5 concentration remained stable at 10-30 μg / m³ during the period from when the fan stopped to when it started operating at low airflow. 3 However, during the period from fan shutdown to high-volume startup, the concentration of fine particulate matter in the duct first increases significantly and then decreases slowly. Specifically, using a PM2.5 monitor, it can be detected that the PM2.5 concentration in the duct can reach 300 μg / m³ during the period from shutdown to high-volume startup. 3 After the fan operates at high airflow for 10 minutes, the PM2.5 concentration inside the duct can be maintained at 10-30 μg / m³. 3 Therefore, maintaining a continuous high airflow rate for the fan can be an effective dust removal solution. For example, the continuous high airflow rate operation of the fan can be activated by pressing a soft button on the monitoring screen.

[0045] The technical solution of this invention uses a fan to continuously operate at high air volume to remove dust from the air duct, which can effectively remove the accumulated dust attached to the air duct and has a good dust removal effect.

[0046] Based on the above embodiments, optionally, the high-speed ventilation mode includes: alternating between high-volume operation and stop operation of the fan; wherein, the high-volume operation lasts for a first preset time, and the stop operation lasts for a second preset time.

[0047] Specifically, the first preset time refers to the duration of high-volume operation of the fan. The second preset time refers to the duration of fan shutdown. Since high-speed airflow requires a certain amount of time to form stable air pressure, and the main purpose of stopping operation is to allow large particles to settle or for the system to cool down briefly, rather than the main dust removal phase, the first preset time can be set longer than the second preset time. Furthermore, setting a longer first preset time can also ensure that the airflow is sufficiently agitated and carries away dust.

[0048] In this embodiment of the invention, experiments revealed that the effective dust removal process mainly occurs in the initial stage from shutdown to high-airflow start-up. This is because during the high-airflow start-up period, the airflow velocity is high, and the high-speed airflow disturbance causes accumulated dust to be quickly carried away by the airflow. Therefore, the dust removal effect can be enhanced by increasing the number of high-airflow start-ups.

[0049] For example, the fan operation logic can be to first run at high air volume for 5 minutes, then stop running for 1 minute, and so on in a cycle.

[0050] The technical solution of this invention employs a cyclical alternation of high-volume and stop operation of the fan to remove dust from the duct. During the high-volume operation phase, a strong airflow impact is generated, effectively stripping away stubborn dust adhering to the inner wall of the duct. During the stop operation phase, heavier particles naturally settle, facilitating concentrated removal in the next cycle, resulting in excellent dust removal performance. Furthermore, the added stop operation phase avoids prolonged full-load operation of the fan, thereby extending its service life.

[0051] Based on the above embodiments, optionally, the material of the mixing air filter of the fan includes non-woven filter media of G3 filtration grade.

[0052] Specifically, according to the international standard ISO 16890, G3 filtration grade belongs to pre-filters, mainly used to intercept dust particles and suspended solids. Non-woven filter media refers to fabric made by melt-blowing or needle-punching polyester fibers into a three-dimensional mesh structure. Tests have shown that after replacing the mixing air filter of a fan with G3 grade non-woven filter media, the PM2.5 concentration during the fan's startup from shutdown to high-volume operation was significantly lower than before the replacement, and the amount of dust adhering to the grille was significantly reduced after 20 minutes of fan operation. Therefore, using G3 grade non-woven filter media in the mixing air filter can significantly improve dust removal efficiency and significantly reduce the amount of dust stored in the duct.

[0053] Figure 2A flowchart illustrating another vehicle duct dust control method suitable for tunnel environments, provided as an embodiment of the present invention. Based on the above embodiments, as... Figure 2 As shown, optionally, this vehicle duct dust control method suitable for tunnel environments includes:

[0054] S210. During vehicle operation, control the fan to maintain a low airflow.

[0055] Among them, the wind speed of the fan when operating at low air volume is lower than the wind speed when operating at high air volume.

[0056] Specifically, low air volume operation refers to the state in which the fan operates at a lower speed, generating a low-speed airflow.

[0057] In this embodiment of the invention, low wind speed can prevent strong airflow from blowing directly on passengers, and at the same time prevent dust in the air duct from being resuspended, thereby increasing the passenger's riding experience.

[0058] S220. After the vehicle stops operating, obtain the concentration of fine particulate matter in the air duct.

[0059] S230. If the concentration of fine particulate matter is higher than the first preset threshold, control the fan to enter the high-speed ventilation mode.

[0060] S240. During the execution of high-speed ventilation mode, if the concentration of fine particulate matter is detected to be lower than the second preset threshold, the fan is controlled to switch to low-speed ventilation mode; wherein, the first preset threshold is greater than the second preset threshold.

[0061] The technical solution of this invention, by controlling the fan to operate at a low air volume during vehicle operation, can maintain the minimum fresh air exchange requirements of the passenger compartment while avoiding dust caused by excessive airflow disturbance in the duct.

[0062] Figure 3 This is a schematic diagram of a vehicle ventilation duct dust removal control device suitable for tunnel environments, provided as an embodiment of the present invention. The ventilation duct is physically connected to an air conditioner, which includes a fan. Figure 3 As shown, the vehicle ventilation duct dust control device suitable for tunnel environments includes:

[0063] The fine particulate matter acquisition module 310 is used to acquire the concentration of fine particulate matter in the air duct after the vehicle has finished operating.

[0064] The ventilation mode switching module 320 is used to control the fan to enter a high-speed ventilation mode if the fine particulate matter concentration is higher than a first preset threshold; and to control the fan to switch to a low-speed ventilation mode if the fine particulate matter concentration is detected to be lower than a second preset threshold during the execution of the high-speed ventilation mode; wherein the first preset threshold is greater than the second preset threshold.

[0065] Optionally, the ventilation mode switching module includes: a ventilation mode switching unit; used to control the alternation of high air volume operation and stop operation of the fan; wherein, the high air volume operation lasts for a first preset time, and the stop operation lasts for a second preset time.

[0066] The vehicle duct dust removal control device for tunnel environments provided in the embodiments of the present invention can execute the vehicle duct dust removal control method for tunnel environments provided in any embodiment of the present invention, and has the corresponding functional modules and beneficial effects of the method.

[0067] This invention also provides an air conditioner for vehicles in tunnel environments. The air conditioner includes a control module for executing the vehicle duct dust removal control method for tunnel environments provided in any embodiment of this invention. The control module has the corresponding functional modules and beneficial effects for executing the method.

[0068] This invention also provides a vehicle for use in tunnel environments. The vehicle for tunnel environments includes a controller for executing the vehicle duct dust removal control method for tunnel environments provided in any embodiment of this invention. The controller has corresponding functional modules and beneficial effects for executing the method.

[0069] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this invention can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this invention can be achieved, and this is not limited herein.

[0070] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A method for controlling dust removal in vehicle ventilation ducts suitable for tunnel environments, characterized in that, The air duct is physically connected to the air conditioner, and the air conditioner includes a fan. The vehicle air duct dust removal control method suitable for tunnel environments includes: After the vehicle finishes operation, the concentration of fine particulate matter in the air duct is obtained; If the concentration of fine particulate matter is higher than a first preset threshold, the fan is controlled to enter a high-speed ventilation mode. During the execution of the high-speed ventilation mode, if the concentration of fine particulate matter is detected to be lower than the second preset threshold, the fan is controlled to switch to the low-speed ventilation mode; wherein the first preset threshold is greater than the second preset threshold.

2. The vehicle ventilation duct dust control method applicable to tunnel environments according to claim 1, characterized in that, The high-speed ventilation mode includes: The fan operates continuously at a high air volume.

3. The vehicle ventilation duct dust control method applicable to tunnel environments according to claim 1, characterized in that, The high-speed ventilation mode includes: The fan alternates between high-volume operation and shutdown; wherein the high-volume operation lasts for a first preset time and the shutdown operation lasts for a second preset time.

4. The vehicle ventilation duct dust control method applicable to tunnel environments according to claim 1, characterized in that, The material of the mixing air filter of the fan includes G3 filtration grade non-woven fabric filter media.

5. The vehicle ventilation duct dust control method suitable for tunnel environments according to claim 2, characterized in that, The vehicle ventilation duct dust control method applicable to tunnel environments also includes: During vehicle operation, the fan is controlled to operate at a low air volume; wherein the fan speed during low air volume operation is lower than the fan speed during high air volume operation.

6. A vehicle ventilation duct dust control device suitable for tunnel environments, characterized in that, The air duct is physically connected to the air conditioner, the air conditioner includes a fan, and the vehicle air duct dust removal control device suitable for tunnel environments includes: The fine particulate matter acquisition module is used to acquire the concentration of fine particulate matter in the air duct after the vehicle has finished operating. A ventilation mode switching module is used to control the fan to enter a high-speed ventilation mode if the fine particulate matter concentration is higher than a first preset threshold; and to control the fan to switch to a low-speed ventilation mode if the fine particulate matter concentration is detected to be lower than a second preset threshold during the execution of the high-speed ventilation mode; wherein the first preset threshold is greater than the second preset threshold.

7. The vehicle ventilation duct dust control device suitable for tunnel environments according to claim 6, characterized in that, The ventilation mode switching module includes: A ventilation mode switching unit is used to control the alternation of high-volume operation and stop operation of the fan; wherein the high-volume operation lasts for a first preset time, and the stop operation lasts for a second preset time.

8. An air conditioner for a vehicle suitable for tunnel environments, characterized in that, The air conditioning system in the vehicle suitable for tunnel environments includes a control module, which is used to execute the vehicle duct dust removal control method suitable for tunnel environments according to any one of claims 1-5.

9. A vehicle suitable for tunnel environments, characterized in that, The vehicle suitable for tunnel environments includes a controller for executing the vehicle duct dust removal control method suitable for tunnel environments as described in any one of claims 1-5.

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