Control method for ventilation system of ship space and ventilation system of ship space

Abstract

The embodiment of the invention provides a control method of a ventilation system of a ship space and the ventilation system of the ship space. The method comprises the following steps: acquiring pressure difference data of a ship space; wherein the pressure difference data is the difference value between the actual pressure of the ship space and the standard atmospheric pressure; and according to the pressure difference data and a preset first pressure difference threshold value, the rotating speed of at least one air feeder and the rotating speed of at least one exhaust fan in the ventilation system of the ship space are controlled. Working loads of the air feeder and the exhaust fan can be adjusted according to real-time data in the ship space so as to achieve the effect of saving energy consumption.

Description

Technical Field

[0001] The present application relates to the field of ship and marine engineering technology, and in particular to a control method for a ventilation system of a ship space and a ventilation system of the ship space. Background Art

[0002] A ship is typically provided with multiple ship spaces, which can be used to install equipment and provide operating space for the equipment. The ship spaces typically require ventilation to ensure a stable air environment within the ship spaces.

[0003] Some technologies install a supply fan and an exhaust fan within the vessel's space. The supply fan continuously supplies air into the vessel's space, while the exhaust fan continuously exhausts the air within the vessel's space to the outside. In these technologies, the supply fan and exhaust fan operate at full capacity, resulting in high energy consumption.

[0004] Therefore, there is an urgent need for a solution that can ensure a stable air environment in the ship space in a more energy-efficient manner. Summary of the Invention

[0005] The control method of the ventilation system of the ship space and the ventilation system of the ship space provided in the embodiments of the present application can adjust the workload of the supply fan and the exhaust fan according to the real-time data in the ship space to achieve the effect of saving energy consumption.

[0006] In a first aspect, an embodiment of the present application provides a method for controlling a ventilation system of a ship space, comprising:

[0007] Obtaining pressure differential data of the ship space; wherein the pressure differential data is the difference between the actual pressure of the ship space and the standard atmospheric pressure;

[0008] According to the pressure difference data and a preset first pressure difference threshold, a rotation speed of at least one supply fan and a rotation speed of at least one exhaust fan in a ventilation system of the ship space are controlled.

[0009] In one possible implementation, controlling the rotation speed of at least one blower in a ventilation system of a ship space according to pressure difference data and a preset first pressure difference threshold includes:

[0010] If it is determined that a first difference between the pressure difference data and the first pressure difference threshold falls within a first preset range, controlling the rotation speed of at least one blower of the ventilation system of the ship space to be a first rotation speed;

[0011] Otherwise, based on the pressure difference data and the first pressure difference threshold, the speed of at least one blower of the ventilation system is controlled to be a second speed or a third speed; wherein the second speed is greater than the first speed; and the third speed is less than the first speed.

[0012] In one possible implementation, the first preset range includes a first upper limit and a first lower limit; and controlling the speed of at least one blower of the ventilation system to the second speed or the third speed based on the pressure difference data and the first pressure difference threshold includes:

[0013] If it is determined that a first difference between the pressure difference data and the first pressure difference threshold is less than a first lower limit, controlling the rotation speed of at least one blower of the ventilation system to a second rotation speed;

[0014] If it is determined that a first difference between the pressure difference data and the first pressure difference threshold is greater than a first upper limit, the rotational speed of at least one blower of the ventilation system is controlled to be a third rotational speed.

[0015] In one possible implementation, after controlling the rotational speed of at least one blower of the ventilation system to be the second rotational speed, the method further includes:

[0016] If it is determined that a first difference between the pressure difference data and the first pressure difference threshold falls within a first preset range, the rotation speed of at least one blower of the ventilation system is controlled to maintain a second rotation speed.

[0017] In a possible implementation, after controlling the rotational speed of at least one blower of the ventilation system to be a third rotational speed, the method further includes:

[0018] If it is determined that a first difference between the pressure difference data and the first pressure difference threshold falls within a first preset range, the rotational speed of at least one blower of the ventilation system is controlled to maintain a third rotational speed.

[0019] In one possible embodiment, before controlling the rotation speed of at least one supply fan and the rotation speed of at least one exhaust fan in the ventilation system of the ship space according to the pressure difference data and the preset first pressure difference threshold, the method further includes:

[0020] Obtain temperature data of ship spaces;

[0021] If it is determined that the temperature data is less than or equal to the temperature threshold, the step of controlling the speed of at least one supply fan and at least one exhaust fan in the ventilation system of the ship space according to the pressure difference data and the preset first pressure difference threshold is executed.

[0022] In one possible implementation, the method further includes:

[0023] If it is determined that the temperature data is greater than the temperature threshold, the speed of at least one supply fan of the ventilation system is controlled according to the pressure difference data and the preset second pressure difference threshold, and the speed of at least one exhaust fan of the ventilation system is controlled to be the fifth speed or the initial speed; wherein the second pressure difference threshold is greater than the first pressure difference threshold; the fifth speed is greater than the initial speed.

[0024] In one possible implementation, controlling the rotation speed of at least one blower of the ventilation system according to the pressure difference data and a preset second pressure difference threshold includes:

[0025] If it is determined that a second difference between the pressure difference data and the second pressure difference threshold falls within a second preset range, controlling the rotational speed of at least one blower of the ventilation system to be a fourth rotational speed; wherein the second preset range includes a second upper limit and a second lower limit;

[0026] If it is determined that a second difference between the pressure difference data and the second pressure difference threshold is less than a second lower limit, controlling the rotational speed of at least one blower of the ventilation system to be a sixth rotational speed; wherein the sixth rotational speed is greater than the fourth rotational speed;

[0027] If it is determined that the second difference between the pressure difference data and the second pressure difference threshold is greater than the second upper limit, the speed of at least one blower of the ventilation system is controlled to be a seventh speed; wherein the seventh speed is less than the fourth speed.

[0028] In one possible embodiment, the at least one exhaust fan of the ventilation system includes a first exhaust fan and a second exhaust fan;

[0029] Controlling the speed of at least one exhaust fan of the ventilation system to a fifth speed, or an initial speed, includes:

[0030] The rotation speed of the first exhaust fan is controlled to be the fifth rotation speed, and the rotation speed of the second exhaust fan is controlled to be the initial rotation speed.

[0031] In one possible implementation, the method further includes:

[0032] If it is determined that the duration of the temperature data being greater than the temperature threshold is greater than the preset time, the rotational speed of the second exhaust fan is controlled to be an eighth rotational speed; wherein the eighth rotational speed is greater than the initial rotational speed.

[0033] In a second aspect, an embodiment of the present application provides a control device for a ventilation system of a ship space, comprising:

[0034] An acquisition module is used to obtain pressure difference data of the ship space; wherein the pressure difference data is the difference between the actual pressure of the ship space and the standard atmospheric pressure;

[0035] The control module is used to control the rotation speed of at least one supply fan and at least one exhaust fan in the ventilation system of the ship space according to the pressure difference data and a preset first pressure difference threshold.

[0036] In one possible embodiment, the control module is configured to control the rotation speed of at least one blower in the ventilation system of the vessel space based on the pressure difference data and a preset first pressure difference threshold value, wherein:

[0037] If it is determined that a first difference between the pressure difference data and the first pressure difference threshold falls within a first preset range, controlling the rotation speed of at least one blower of the ventilation system of the ship space to be a first rotation speed;

[0038] Otherwise, based on the pressure difference data and the first pressure difference threshold, the speed of at least one blower of the ventilation system is controlled to be a second speed or a third speed; wherein the second speed is greater than the first speed; and the third speed is less than the first speed.

[0039] In one possible implementation, the first preset range includes a first upper limit and a first lower limit; and based on the pressure difference data and the first pressure difference threshold, the speed of at least one blower of the ventilation system is controlled to be the second speed or the third speed, and the control module is configured to:

[0040] If it is determined that a first difference between the pressure difference data and the first pressure difference threshold is less than a first lower limit, controlling the rotation speed of at least one blower of the ventilation system to a second rotation speed;

[0041] If it is determined that a first difference between the pressure difference data and the first pressure difference threshold is greater than a first upper limit, the rotational speed of at least one blower of the ventilation system is controlled to be a third rotational speed.

[0042] In a possible implementation, after controlling the rotational speed of at least one blower of the ventilation system to be the second rotational speed, the control module is further configured to:

[0043] If it is determined that a first difference between the pressure difference data and the first pressure difference threshold falls within a first preset range, the rotation speed of at least one blower of the ventilation system is controlled to maintain a second rotation speed.

[0044] In a possible implementation, after controlling the rotational speed of at least one blower of the ventilation system to be the third rotational speed, the control module is further configured to:

[0045] If it is determined that a first difference between the pressure difference data and the first pressure difference threshold falls within a first preset range, the rotational speed of at least one blower of the ventilation system is controlled to maintain a third rotational speed.

[0046] In one possible embodiment, before controlling the rotation speed of at least one supply fan and the rotation speed of at least one exhaust fan in the ventilation system of the ship space according to the pressure difference data and a preset first pressure difference threshold, the acquisition module is further configured to: acquire temperature data of the ship space;

[0047] The control module is also used to: if it is determined that the temperature data is less than or equal to the temperature threshold, execute the step of controlling the speed of at least one supply fan and the speed of at least one exhaust fan in the ventilation system of the ship space according to the pressure difference data and the preset first pressure difference threshold.

[0048] In a possible implementation manner, the control module is further configured to:

[0049] If it is determined that the temperature data is greater than the temperature threshold, the speed of at least one supply fan of the ventilation system is controlled according to the pressure difference data and the preset second pressure difference threshold, and the speed of at least one exhaust fan of the ventilation system is controlled to be the fifth speed or the initial speed; wherein the second pressure difference threshold is greater than the first pressure difference threshold; the fifth speed is greater than the initial speed.

[0050] In one possible implementation, the control module controls the speed of at least one blower of the ventilation system based on the pressure difference data and a preset second pressure difference threshold, and is configured to:

[0051] If it is determined that a second difference between the pressure difference data and the second pressure difference threshold falls within a second preset range, controlling the rotational speed of at least one blower of the ventilation system to be a fourth rotational speed; wherein the second preset range includes a second upper limit and a second lower limit;

[0052] If it is determined that a second difference between the pressure difference data and the second pressure difference threshold is less than a second lower limit, controlling the rotational speed of at least one blower of the ventilation system to be a sixth rotational speed; wherein the sixth rotational speed is greater than the fourth rotational speed;

[0053] If it is determined that the second difference between the pressure difference data and the second pressure difference threshold is greater than the second upper limit, the speed of at least one blower of the ventilation system is controlled to be a seventh speed; wherein the seventh speed is less than the fourth speed.

[0054] In one possible embodiment, the at least one exhaust fan of the ventilation system includes a first exhaust fan and a second exhaust fan;

[0055] Controlling the rotational speed of at least one exhaust fan of the ventilation system to a fifth rotational speed, or an initial rotational speed, the control module is configured to:

[0056] The rotation speed of the first exhaust fan is controlled to be the fifth rotation speed, and the rotation speed of the second exhaust fan is controlled to be the initial rotation speed.

[0057] In a possible implementation manner, the control module is further configured to:

[0058] If it is determined that the duration of the temperature data being greater than the temperature threshold is greater than the preset time, the rotational speed of the second exhaust fan is controlled to be an eighth rotational speed; wherein the eighth rotational speed is greater than the initial rotational speed.

[0059] In a third aspect, an embodiment of the present application provides a controller, comprising: a memory, a processor;

[0060] Memory stores computer-executable instructions;

[0061] The processor executes the computer-executable instructions stored in the memory, so that the processor executes the above first aspect and / or various possible implementations of the first aspect.

[0062] In a fourth aspect, an embodiment of the present application provides a ventilation system for a ship space, comprising: the controller provided in the third aspect above, at least one blower, and at least one exhaust fan;

[0063] The controller is respectively connected to at least one blower; the controller is also respectively connected to at least one exhaust fan.

[0064] In a fifth aspect, an embodiment of the present application provides a computer-readable storage medium, in which computer-executable instructions are stored. When the computer-executable instructions are executed by a processor, they are used to implement the first aspect above and / or various possible implementation methods of the first aspect.

[0065] In a sixth aspect, an embodiment of the present application provides a computer program product, including a computer program, which, when executed by a processor, implements the first aspect and / or various possible implementation methods of the first aspect.

[0066] The control method of the ventilation system of the ship space and the ventilation system of the ship space provided in the embodiment of the present application obtain the pressure difference data in the ship space, and control the rotation speed of the exhaust fan and the supply fan in the ventilation system in the ship space according to the pressure difference data and a preset first pressure difference threshold. It is possible to control the actual operating load of the exhaust fan and the supply fan in the ventilation system, control their rotation speed instead of directly controlling it to the full load speed, and save energy while ensuring a stable air environment in the ship space. BRIEF DESCRIPTION OF THE DRAWINGS

[0067] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0068] Figure 1 Schematic diagram of the control method of the ventilation system of the ship space provided in this application Figure 1 ;

[0069] Figure 2 Schematic diagram of the process of controlling the ventilation system of the ship space provided in this application Figure 2 ;

[0070] Figure 3 Schematic diagram of the process of controlling the ventilation system of the ship space provided in this application Figure 3 ;

[0071] Figure 4 A schematic diagram of the structure of a control device for a ventilation system of a ship space provided in this application;

[0072] Figure 5 A schematic diagram of the structure of the controller provided in this application;

[0073] Figure 6 Schematic diagram of the ventilation system for the ship space provided in this application Figure 1 ;

[0074] Figure 7 Schematic diagram of the ventilation system for the ship space provided in this application Figure 2 .

[0075] The above drawings illustrate specific embodiments of the present application, which will be described in more detail below. These drawings and the textual description are not intended to limit the scope of the present application in any way, but rather to illustrate the concepts of the present application to those skilled in the art by reference to specific embodiments. DETAILED DESCRIPTION

[0076] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

[0077] First, let’s explain the terms involved in this application:

[0078] Ship space: refers to the space on a ship, which may include the ship's machinery space. During the operation of the ship, the ship's machinery space is used to install equipment and provide operating space for the equipment.

[0079] Ships typically have multiple spaces. For example, machinery spaces are often enclosed or semi-enclosed compartments, characterized by relatively small spaces and densely packed equipment. Therefore, to ensure proper equipment operation and personnel safety, machinery spaces are typically equipped with ventilation systems consisting of exhaust fans and supply fans. Supply fans draw fresh air into the machinery spaces, providing essential oxygen for personnel and equipment and helping to lower the ambient temperature within them. Exhaust fans, on the other hand, remove stale air and heat from the machinery spaces, preventing them from adversely affecting personnel and equipment.

[0080] Taking a practical example, when deck operations generate toxic and hazardous gases, some of them inevitably enter the ship's machinery spaces through stairways, corridors, and natural ventilation openings, potentially causing poisoning, suffocation, or explosions. Therefore, it's necessary to maintain positive pressure in the machinery spaces to prevent these gases from entering.

[0081] On the other hand, the operation of equipment in the ship's machinery space generates a large amount of waste heat, which increases the ambient temperature inside the ship's machinery space, affecting equipment operation and the health and comfort of workers. Therefore, it is necessary to control the temperature inside the ship's machinery space.

[0082] In some embodiments, the exhaust fans and supply fans in the ventilation system are continuously operated at full load to ensure the air environment requirements of the ship space (such as the ship machinery space).

[0083] However, in the above embodiment, the supply fan and the exhaust fan are in full-load operation, which results in a technical problem of high energy consumption.

[0084] The control method of the ventilation system of the ship space provided in the present application obtains the pressure difference data in the ship space, and controls the rotation speed of the exhaust fan and the supply fan in the ventilation system in the ship space according to the pressure difference data and a preset first pressure difference threshold. The technical means can realize the control of the actual operating load of the exhaust fan and the supply fan in the ventilation system, control their rotation speed instead of directly the full load speed, and achieve the effect of saving energy consumption on the basis of ensuring a stable air environment in the ship space.

[0085] The following specific embodiments describe in detail the technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0086] Figure 1 Schematic diagram of the process of controlling the ventilation system of the ship space provided in this application Figure 1 ,like Figure 1 As shown, the method includes:

[0087] Step 101: Obtain pressure difference data of the ship space.

[0088] The pressure difference data is the difference between the actual pressure of the ship space and the standard atmospheric pressure.

[0089] For example, a pressure differential sensor is installed within the vessel space to measure and obtain pressure differential data within the vessel space. Specifically, the pressure differential sensor includes an air pressure sensor, which measures the actual pressure within the vessel space. The difference between the actual pressure within the vessel space and the standard atmospheric pressure is calculated to obtain the required pressure differential data.

[0090] Step 102: Control the rotation speed of at least one supply fan and at least one exhaust fan in the ventilation system of the ship space according to the pressure difference data and a preset first pressure difference threshold.

[0091] Exemplarily, a ventilation system is provided in the ship space, wherein the ventilation system includes: at least one supply fan and at least one exhaust fan. The supply fan is used to supply external air into the ship space; the exhaust fan is used to exhaust internal air from the ship space.

[0092] The rotation speeds of the supply fan and the exhaust fan in the ventilation system are controlled according to the acquired pressure difference data and a preset first pressure difference threshold.

[0093] For example, to maintain positive pressure within a ship's interior, the actual pressure must be greater than standard atmospheric pressure. To account for sensor errors, a first pressure differential threshold is preset. The speed of the exhaust and supply fans in the ventilation system is controlled based on the relationship between the pressure differential data and the threshold.

[0094] For example, if the pressure difference data is greater than the first pressure difference threshold, it means that the actual pressure in the current ship space is too high and the difference between it and the standard atmospheric pressure is too large. In this case, the speed of the supply fan can be controlled to be reduced and the speed of the exhaust fan can be controlled to be increased to reduce the actual pressure in the ship space, thereby reducing the pressure difference data.

[0095] For another example, if the pressure difference data is less than the first pressure difference threshold, it means that the actual pressure in the current ship space is too small and the difference between it and the standard atmospheric pressure is too small. In this case, the speed of the supply fan can be increased and the speed of the exhaust fan can be reduced to increase the actual pressure in the ship space, thereby increasing the pressure difference data.

[0096] Optionally, the supply and exhaust fans of the ship's ventilation system may be variable frequency supply and exhaust fans. A proportional-integral-differential (PID) module of a controller may be used to send commands to the variable frequency supply fan to control the actual operating load of the variable frequency supply fan; or a PID control module of the controller may be used to send commands to the variable frequency exhaust fan to control the actual operating load of the variable frequency exhaust fan.

[0097] In practical applications, the actual manifestation of controlling the operating load of the variable frequency supply fan on the variable frequency supply fan is to control the speed of the variable frequency supply fan to the speed indicated in the instruction; and the actual manifestation of controlling the operating load of the variable frequency exhaust fan on the variable frequency exhaust fan is to control the speed of the variable frequency exhaust fan to the speed indicated in the instruction.

[0098] In the process of controlling the variable frequency supply fan and the variable frequency exhaust fan, their speeds can be controlled to be different proportions of the rated speed corresponding to the full load.

[0099] The control method for a ventilation system in a ship space provided in an embodiment of the present application obtains pressure differential data in the ship space and controls the rotational speeds of the exhaust and supply fans in the ventilation system in the ship space based on the pressure differential data and a preset first pressure differential threshold. This method can control the actual operating load of the exhaust and supply fans in the ventilation system, controlling their rotational speeds rather than directly at full load, thereby saving energy while ensuring a stable air environment in the ship space. Furthermore, based on the actual pressure differential data in the actual ship space, the rotational speeds of the supply and exhaust fans in the ventilation system can be further accurately controlled, making the control of the rotational speeds of the supply and exhaust fans more targeted and further reducing the energy consumption required to maintain a stable air environment in the ship space.

[0100] Figure 2 Schematic diagram of the process of controlling the ventilation system of the ship space provided in this application Figure 2 ,like Figure 2 As shown, this embodiment Figure 1 Based on the embodiment, controlling the rotation speed of at least one blower may include the following steps:

[0101] Step 201: If it is determined that a first difference between the pressure difference data and a first pressure difference threshold value falls within a first preset range, the rotation speed of at least one blower of a ventilation system of the ship space is controlled to be a first rotation speed.

[0102] For example, the pressure difference data is recorded as X, and the first pressure difference threshold is recorded as A. The value obtained by subtracting A from X is the first difference. If the first difference falls within the first preset range, it means that the difference between the current pressure difference data of the ship space and the preset first pressure difference threshold is not large. At this time, the speed of the blower can be controlled to the first speed. The first speed refers to the rated speed of the blower when it is running at full load. .

[0103] Optionally, when the first difference falls within the first preset range, the rotational speed of at least one exhaust fan of the ventilation system of the ship space can be controlled to be an initial rotational speed. The initial rotational speed refers to the rated rotational speed of the exhaust fan when it is running at full load. .

[0104] Step 202: Otherwise, according to the pressure difference data and the first pressure difference threshold, control the rotation speed of at least one blower of the ventilation system to be the second rotation speed or the third rotation speed.

[0105] The second speed is greater than the first speed; and the third speed is less than the first speed.

[0106] For example, if the first difference does not fall within the first preset range, it indicates that the gap between the current pressure difference data of the ship space and the preset first pressure difference threshold is large. At this time, the speed of the blower can be controlled to the second speed or the third speed.

[0107] When the first difference is higher than the upper limit of the first preset range, it indicates that the pressure differential data is significantly greater than the first pressure differential threshold, indicating that the actual pressure within the vessel space is excessive. Therefore, to ensure the normal operation of equipment within the vessel space and the comfort of personnel working, the speed of the blower used to supply air to the vessel space can be reduced. Specifically, the speed of at least one blower can be controlled to a third speed, which is lower than the first speed.

[0108] When the first difference is lower than the lower limit of the first preset range, it indicates that the pressure differential data is significantly lower than the first pressure differential threshold, indicating that the actual pressure within the vessel space is too low. Therefore, to maintain positive pressure within the vessel space, the speed of the blower used to supply air to the vessel space can be increased, i.e., the speed of at least one blower can be controlled to a second speed that is greater than the first speed.

[0109] It should be noted that the above steps 201 and 202 can be executed simultaneously or sequentially, and the execution order is not limited in this embodiment.

[0110] Furthermore, in an example, the first preset range includes a first upper limit value and a first lower limit value.

[0111] Exemplarily, the first preset range refers to a numerical range that may include a first upper limit and a first lower limit. The first upper limit is greater than the first lower limit. For example, if the first pressure difference threshold is set to 103 kPa and the standard atmospheric pressure is 101.325 kPa, the first preset range may be 1.2 kPa to 2.5 kPa. It is understood that the first upper limit in the first preset range is 2.5 kPa, and the first lower limit in the first preset range is 1.2 kPa.

[0112] If it is determined that the first difference between the pressure difference data and the first pressure difference threshold does not fall within the first preset range, the step of specifically controlling the rotational speed of at least one blower of the ventilation system to the second rotational speed or the third rotational speed includes:

[0113] Step 2021: If it is determined that a first difference between the pressure difference data and the first pressure difference threshold is less than a first lower limit, the rotation speed of at least one blower of the ventilation system is controlled to be a second rotation speed.

[0114] For example, if the first difference is less than the first lower limit, it indicates that the current pressure difference data of the ship space is much less than the first pressure difference threshold, which indicates that the actual pressure in the ship space is too low. Therefore, in order to ensure the positive pressure in the ship space, the speed of the blower used to supply air to the ship space can be increased, that is, the speed of at least one blower can be controlled to a second speed. The second speed refers to the rated speed of the blower when it is running at full load. ,and Greater than , that is, the second speed is greater than the first speed.

[0115] For example, the ventilation system includes a first variable frequency blower and a second variable frequency blower, and the rotation speeds of the first variable frequency blower and the second variable frequency blower are both controlled to be a second rotation speed.

[0116] Optionally, when the first difference is less than the first lower limit, the rotational speed of at least one exhaust fan of the ventilation system of the ship space can be controlled to be the initial rotational speed. The initial rotational speed refers to the rated rotational speed of the exhaust fan when it is running at full load. .

[0117] For example, a ventilation system includes a variable frequency exhaust fan and an auxiliary variable frequency exhaust fan, and the speeds of the variable frequency exhaust fan and the auxiliary variable frequency exhaust fan are controlled to be the initial speeds.

[0118] Step 2022: If it is determined that the first difference between the pressure difference data and the first pressure difference threshold is greater than the first upper limit, the rotational speed of at least one blower of the ventilation system is controlled to be a third rotational speed.

[0119] For example, if the first difference is greater than the first upper limit, it indicates that the current pressure difference data of the ship space is much greater than the first pressure difference threshold, which indicates that the actual pressure in the ship space is too high. Therefore, in order to ensure the normal operation of the equipment in the ship space and the working comfort of the personnel, the speed of the blower used to supply air to the ship space can be reduced, that is, the speed of at least one blower can be controlled to a third speed. The third speed refers to the rated speed of the blower when it is running at full load. ,and Less than , that is, the third speed is less than the first speed.

[0120] For example, the ventilation system includes a first variable frequency blower and a second variable frequency blower, and the rotational speeds of the first variable frequency blower and the second variable frequency blower are both controlled to be a third rotational speed.

[0121] Optionally, when the first difference is greater than the first upper limit, the rotational speed of at least one exhaust fan of the ventilation system of the ship space can be controlled to be the initial rotational speed. The initial rotational speed refers to the rated rotational speed of the exhaust fan when it is running at full load. .

[0122] For example, a ventilation system includes a variable frequency exhaust fan and an auxiliary variable frequency exhaust fan, and the speeds of the variable frequency exhaust fan and the auxiliary variable frequency exhaust fan are controlled to be the initial speeds.

[0123] In the above embodiment, by comparing the first difference between the pressure differential data and the first pressure differential threshold with the first preset range, the actual pressure within the current vessel space can be more accurately determined, and the speeds of the supply and exhaust fans in the ventilation system can be specifically controlled to operate at different percentages of the rated speed. This reduces energy consumption while ensuring a stable air environment within the vessel space.

[0124] As can be seen from the preceding examples, when the pressure differential within the vessel's interior is less than the first lower limit, the blower speed needs to be increased. After increasing the blower speed, the pressure differential within the vessel's interior may gradually increase. Similarly, when the pressure differential within the vessel's interior exceeds the first upper limit, the blower speed needs to be reduced. After reducing the blower speed, the pressure differential within the vessel's interior may gradually decrease. This example further explains the subsequent operation of the ventilation system based on the preceding examples.

[0125] In one example, after controlling the rotational speed of at least one blower of the ventilation system to be the second rotational speed, the method further includes:

[0126] If it is determined that a first difference between the pressure difference data and the first pressure difference threshold falls within a first preset range, the rotation speed of at least one blower of the ventilation system is controlled to maintain a second rotation speed.

[0127] Exemplarily, when the first difference between the pressure difference data and the first pressure difference threshold is less than the first lower limit, after the rotation speed of at least one blower is controlled to be the second rotation speed, the blower speed is increased, and the blower accelerates to supply air into the ship space, which will increase the actual pressure in the ship space. After the actual pressure in the ship space increases, the value of the pressure difference data will increase until the first difference between the pressure difference data and the first pressure difference threshold is greater than or equal to the first lower limit (that is, the first difference falls within the first preset range), and the rotation speed of at least one blower in the ventilation system is still controlled to maintain the second rotation speed. That is, the rotation speeds of the first variable frequency blower and the second variable frequency blower in the ventilation system are controlled to be maintained at the second rotation speed (rated rotation speed). ).

[0128] In the above example, after increasing the blower speed, even if the pressure differential within the vessel space returns to the first preset range, the blower speed is maintained at the second speed. This implements a safety redundancy design, further ensuring a positive pressure environment within the vessel space. This ensures positive pressure within the vessel space even in the event of temporary disturbances in the air environment (e.g., door opening, seal aging). This improves the stability of the ventilation system, thereby ensuring the stability of the vessel space's air environment, and indirectly enhances the safety of the vessel space.

[0129] In one example, after controlling the rotational speed of at least one blower of the ventilation system to a third rotational speed, the method further includes:

[0130] If it is determined that a first difference between the pressure difference data and the first pressure difference threshold falls within a first preset range, the rotational speed of at least one blower of the ventilation system is controlled to maintain a third rotational speed.

[0131] Exemplarily, when the first difference between the pressure difference data and the first pressure difference threshold is greater than the first upper limit, after the rotation speed of at least one blower is controlled to be the third speed, the blower speed is reduced and the blower slows down to supply air into the ship space, which will cause the actual pressure in the ship space to drop. After the actual pressure in the ship space drops, the value of the pressure difference data will decrease until the first difference between the pressure difference data and the first pressure difference threshold is less than or equal to the first upper limit (that is, the first difference falls within the first preset range). The rotation speed of at least one blower in the ventilation system is still controlled to maintain the third speed. That is, the rotation speeds of the first variable frequency blower and the second variable frequency blower in the ventilation system are controlled to be maintained at the third speed (the rated speed). ).

[0132] In the above example, after the blower speed is reduced, even if the pressure differential data within the ship space returns to the first preset range, the blower speed is still maintained at the third speed. Firstly, maintaining a lower speed can achieve energy conservation; secondly, it can also achieve a safety redundancy design, further ensuring that the pressure differential data value within the ship space is stable within the first preset range, thereby ensuring the stability of the air environment in the ship space.

[0133] Based on any of the above embodiments, in addition to obtaining the pressure difference data of the ship space, the temperature data of the propagation space can also be obtained. Based on the temperature data, the supply fans and exhaust fans in the ventilation system can be further controlled.

[0134] Figure 3 Schematic diagram of the process of controlling the ventilation system of the ship space provided in this application Figure 3 ,like Figure 3 As shown, in one example, before controlling the rotation speed of at least one supply fan and the rotation speed of at least one exhaust fan in the ventilation system of the ship space according to the pressure difference data and the preset first pressure difference threshold, the method further includes:

[0135] Step 301: Obtain temperature data of the ship space.

[0136] For example, a temperature sensor is provided in the ship space, and the temperature sensor can measure and obtain temperature data of the ship space. The temperature data represents the temperature in the ship space.

[0137] Step 302. If it is determined that the temperature data is less than or equal to the temperature threshold, execute the step of controlling the speed of at least one supply fan and at least one exhaust fan in the ventilation system of the ship space according to the pressure difference data and the preset first pressure difference threshold.

[0138] For example, in practical applications, a ship's space may be equipped with some mechanical equipment that generates a large amount of waste heat during operation. This may cause the temperature within the ship's space to rise. If the temperature within the ship's space represented by the temperature data is determined to be less than or equal to a preset temperature threshold, indicating that the current temperature within the ship's space meets the required temperature, the method provided in the aforementioned embodiment is further executed to control the speeds of the supply and exhaust fans in the ventilation system based on the pressure differential data and the first pressure differential threshold.

[0139] In the above example, by incorporating temperature data from the vessel's airspace in addition to differential pressure data, the vessel's air environment can be assessed from two dimensions (pressure and temperature). This allows for control of the supply and / or exhaust fans in the vessel's ventilation system based on both pressure and temperature. This makes ventilation system control more intelligent and integrated with the vessel's actual air environment. Controlling the supply and / or exhaust fans based on this information can further reduce the ventilation system's energy consumption.

[0140] Based on the above example, in one example, if it is determined that the temperature data is greater than the temperature threshold, the speed of at least one supply fan of the ventilation system is controlled according to the pressure difference data and the preset second pressure difference threshold, and the speed of at least one exhaust fan of the ventilation system is controlled to be the fifth speed or the initial speed.

[0141] The second pressure difference threshold is greater than the first pressure difference threshold; and the fifth speed is greater than the initial speed.

[0142] For example, the temperature data is recorded as Y and the temperature threshold is recorded as C. If it is determined that the temperature of the ship space represented by the temperature data is greater than the preset temperature threshold (i.e., Y is greater than C), it indicates that the temperature in the ship space no longer meets the preset requirement, and the ship space needs to be cooled.

[0143] Specifically, the rotation speed of the exhaust fan in the ventilation system can be controlled to increase so that the exhaust fan can discharge the hot air in the ship space to the outside as quickly as possible, thereby achieving cooling.

[0144] For example, the rotation speed of at least one exhaust fan in the ventilation system may be controlled to be a fifth rotation speed or an initial rotation speed, wherein the fifth rotation speed is greater than the initial rotation speed.

[0145] In one example, the speed of one exhaust fan is controlled to be the fifth speed, while the speeds of the other exhaust fans are kept at the initial speeds. In conjunction with the above example, the initial speed refers to the rated speed of the exhaust fan when it is running at full load. The fifth speed refers to the rated speed of the exhaust fan when it is running at full load. ,and Greater than .

[0146] Specifically, the speed of at least one blower can continue to be controlled based on the pressure differential data. However, since cooling the vessel space is more important at this time, increasing the exhaust fan speed may cause the actual pressure within the vessel space to drop. Consequently, the pressure differential data within the vessel space may decrease. However, to maintain a positive pressure state within the vessel space, a preset second pressure differential threshold is used when controlling the blower speed based on the pressure differential data. The second pressure differential threshold is greater than the first pressure differential threshold.

[0147] For example, the second pressure difference threshold is recorded as B, and B is greater than A. Taking actual numerical values ​​as an example, it is assumed that the first pressure difference threshold is 103kPa. When the temperature of the ship space is less than or equal to the preset temperature threshold, the first pressure difference threshold is directly used for judgment. When the temperature of the ship space is greater than the preset temperature threshold, the actual pressure in the ship space will decrease due to the increase in the speed of the exhaust fan. At this time, the pressure difference data will also decrease synchronously. However, in order to ensure the positive pressure environment state of the ship space, the second pressure difference threshold is set to 104kPa. That is, when the temperature is abnormal, in order to give room for the actual pressure drop caused by increasing the speed of the exhaust fan, the second pressure difference threshold is increased to ensure that when the pressure difference data is too much less than the second pressure difference threshold, the speed of the supply fan is increased in time, thereby ensuring the positive pressure environment state of the ship space.

[0148] In the above example, on the one hand, the temperature data of the ship space is used to further evaluate the stability of the air environment in the ship space through the temperature dimension. If the temperature is greater than the preset temperature threshold, it means that the temperature in the ship space is too high, and the exhaust fan speed is controlled to increase so that the exhaust fan can quickly discharge the hot air in the ship space. This can ensure the stability of the temperature in the ship space. On the other hand, due to the increase in the exhaust fan speed, the actual pressure in the ship space may decrease. However, in order to ensure the positive pressure in the ship space, in the process of controlling the speed of the supply fan through the pressure differential data, the first pressure differential threshold is replaced with a larger second pressure differential threshold to control the speed of the supply fan. This can achieve the goal of maintaining the stability of the air environment in the ship space through the two dimensions of temperature and pressure.

[0149] Specifically, when the temperature data is greater than the temperature threshold, the speed of the blower is controlled based on the comparison between the pressure difference data and a preset second pressure difference threshold.

[0150] In one example, if it is determined that the second difference between the pressure difference data and the second pressure difference threshold falls within a second preset range, the rotational speed of at least one blower of the ventilation system is controlled to be a fourth rotational speed.

[0151] The second preset range includes a second upper limit value and a second lower limit value.

[0152] For example, in combination with the above example, the pressure difference data is recorded as X, and the second pressure difference threshold is recorded as B. Then the value obtained by subtracting B from X is the second difference. If the second difference falls within the second preset range, it means that the difference between the current pressure difference data of the ship space and the preset second pressure difference threshold is not large. At this time, the speed of the blower can be controlled to the fourth speed. The fourth speed refers to the rated speed of the blower when it is running at full load. .

[0153] It should be noted that the above The value of The values ​​of can be the same or different. Optional, The value can be greater than This is because after the speed of the exhaust fan is increased, a large amount of hot air is discharged from the ship space. The speed of the supply fan can be appropriately increased synchronously to ensure the stability of the actual pressure in the ship space.

[0154] Furthermore, the second preset range refers to a numerical range, which may include a second upper limit value and a second lower limit value, wherein the second upper limit value is greater than the second lower limit value.

[0155] It should be noted that the numerical range represented by the second preset range and the first preset range may be the same or different.

[0156] In one example, if it is determined that a second difference between the pressure difference data and the second pressure difference threshold is less than a second lower limit, the rotational speed of at least one blower of the ventilation system is controlled to be a sixth rotational speed.

[0157] The sixth speed is greater than the fourth speed.

[0158] For example, if the second difference is less than the second lower limit, it indicates that the current pressure difference data of the ship space is much less than the second pressure difference threshold, which indicates that the actual pressure in the ship space is too low. Therefore, the speed of the blower used to supply air to the ship space can be increased, that is, the speed of at least one blower can be controlled to the sixth speed. The sixth speed refers to the rated speed of the blower when it is running at full load. ,and Greater than , that is, the sixth speed is greater than the fourth speed.

[0159] For example, the ventilation system includes a first variable frequency blower and a second variable frequency blower, and the rotational speeds of the first variable frequency blower and the second variable frequency blower are both controlled to be a sixth rotational speed.

[0160] In one example, if it is determined that a second difference between the pressure difference data and the second pressure difference threshold is greater than a second upper limit, the rotational speed of at least one blower of the ventilation system is controlled to be a seventh rotational speed.

[0161] The seventh speed is lower than the fourth speed.

[0162] For example, if the second difference is greater than the second upper limit, it indicates that the current pressure difference data of the ship space is much greater than the second pressure difference threshold, which indicates that the actual pressure in the ship space is too high. Therefore, the speed of the blower used to supply air to the ship space can be reduced, that is, the speed of at least one blower can be controlled to the seventh speed. The seventh speed refers to the rated speed of the blower when it is running at full load. ,and Less than , that is, the seventh speed is lower than the fourth speed.

[0163] For example, the ventilation system includes a first variable frequency blower and a second variable frequency blower, and the rotational speeds of the first variable frequency blower and the second variable frequency blower are both controlled to be the seventh rotational speed.

[0164] In the above example, by introducing temperature data and replacing the first pressure difference threshold with a larger second pressure difference threshold, it is possible to ensure that while cooling the ship space, the pressure difference data of the air environment in the ship space is further guaranteed to be stable, thereby ensuring the stability of the pressure and temperature of the air environment in the ship space.

[0165] Based on the foregoing example, in one example, the at least one exhaust fan of the ventilation system includes a first exhaust fan and a second exhaust fan.

[0166] Therefore, the process of controlling the rotational speed of the exhaust fan of the ventilation system may specifically include: controlling the rotational speed of the first exhaust fan to be the fifth rotational speed, and controlling the rotational speed of the second exhaust fan to be the initial rotational speed.

[0167] Exemplarily, the number of at least one exhaust fan in the ventilation system is two, including a first exhaust fan and a second exhaust fan. Optionally, in combination with the above example, the first exhaust fan may correspond to the variable frequency exhaust fan in the above example, and the second exhaust fan may correspond to the auxiliary variable frequency exhaust fan in the above example.

[0168] Furthermore, when controlling the rotational speed of the exhaust fan, the rotational speed of the first exhaust fan may be controlled to be the fifth rotational speed, and the rotational speed of the second exhaust fan may be controlled to maintain the initial rotational speed.

[0169] In the above example, when the temperature exceeds the preset threshold, the speed of the first exhaust fan is increased to expel the hot air from the vessel's interior, while the speed of the second exhaust fan is maintained at its initial speed. This prevents the exhaust fans from continuously operating at their full rated speed, reducing energy consumption within the ventilation system. Furthermore, the actual pressure within the vessel's interior remains stable while reducing temperatures.

[0170] In this example, since the temperature data is already greater than the temperature threshold, the speed of the first exhaust fan is increased to the fifth speed in the aforementioned example to quickly cool the ship space. However, if the temperature in the ship space remains high for a period of time, the speed of the second exhaust fan can be further increased.

[0171] In one example, if it is determined that the duration of the temperature data being greater than the temperature threshold is greater than a preset time, the rotational speed of the second exhaust fan is controlled to be an eighth rotational speed.

[0172] The eighth speed is greater than the initial speed.

[0173] For example, a timer module can be used to count the time from the moment the temperature data is detected to be greater than a temperature threshold, and determine the duration of the temperature data being greater than the temperature threshold. If the duration is greater than a preset time, it indicates that increasing the speed of the first exhaust fan to the fifth speed still fails to reduce the temperature within the vessel space to a normal range.

[0174] At this time, the speed of the second exhaust fan is controlled to be the eighth speed. The eighth speed refers to the rated speed of the exhaust fan when it is running at full load. ,and Greater than .

[0175] It should be noted that the above The value of The values ​​can be the same or different.

[0176] In the above example, if it is determined that the duration of continuous high temperature of the air environment in the ship space is greater than a certain time, and increasing the speed of the first exhaust fan cannot reduce the temperature to a normal range, the speed of the second exhaust fan is increased to further cool the air environment in the ship space, so as to reduce the temperature data in the ship space and ensure the temperature stability of the air environment in the ship space.

[0177] The control method for a ventilation system in a ship space provided in an embodiment of the present application obtains pressure differential data in the ship space and controls the rotational speeds of the exhaust and supply fans in the ventilation system in the ship space based on the pressure differential data and a preset first pressure differential threshold. This method can control the actual operating load of the exhaust and supply fans in the ventilation system, controlling their rotational speeds rather than directly at full load, thereby saving energy while ensuring a stable air environment in the ship space. Furthermore, based on the actual pressure differential data in the actual ship space, the rotational speeds of the supply and exhaust fans in the ventilation system can be further accurately controlled, making the control of the rotational speeds of the supply and exhaust fans more targeted and further reducing the energy consumption required to maintain a stable air environment in the ship space.

[0178] In addition, the introduction of temperature data can control the stability of the air environment in the ship space in terms of temperature and pressure.

[0179] Figure 4 The structural diagram of the control device of the ventilation system of the ship space provided by this application is as follows Figure 4 As shown, the control device 40 of the ventilation system of the ship space provided in this embodiment includes:

[0180] The acquisition module 401 is used to obtain pressure difference data of the ship space; wherein the pressure difference data is the difference between the actual pressure of the ship space and the standard atmospheric pressure;

[0181] The control module 402 is configured to control the rotation speed of at least one supply fan and at least one exhaust fan in the ventilation system of the ship space according to the pressure difference data and a preset first pressure difference threshold.

[0182] In one possible implementation, the control module 402 controls the rotation speed of at least one blower in the ventilation system of the vessel space based on the pressure difference data and a preset first pressure difference threshold value. The control module 402 is configured to:

[0183] If it is determined that a first difference between the pressure difference data and the first pressure difference threshold falls within a first preset range, controlling the rotation speed of at least one blower of the ventilation system of the ship space to be a first rotation speed;

[0184] Otherwise, based on the pressure difference data and the first pressure difference threshold, the speed of at least one blower of the ventilation system is controlled to be a second speed or a third speed; wherein the second speed is greater than the first speed; and the third speed is less than the first speed.

[0185] In one possible implementation, the first preset range includes a first upper limit and a first lower limit; and based on the pressure difference data and the first pressure difference threshold, the speed of at least one blower of the ventilation system is controlled to be the second speed or the third speed. The control module 402 is configured to:

[0186] If it is determined that a first difference between the pressure difference data and the first pressure difference threshold is less than a first lower limit, controlling the rotation speed of at least one blower of the ventilation system to a second rotation speed;

[0187] If it is determined that a first difference between the pressure difference data and the first pressure difference threshold is greater than a first upper limit, the rotational speed of at least one blower of the ventilation system is controlled to be a third rotational speed.

[0188] In a possible implementation, after controlling the rotational speed of at least one blower of the ventilation system to be the second rotational speed, the control module 402 is further configured to:

[0189] If it is determined that a first difference between the pressure difference data and the first pressure difference threshold falls within a first preset range, the rotation speed of at least one blower of the ventilation system is controlled to maintain a second rotation speed.

[0190] In a possible implementation, after controlling the rotational speed of at least one blower of the ventilation system to be the third rotational speed, the control module 402 is further configured to:

[0191] If it is determined that a first difference between the pressure difference data and the first pressure difference threshold falls within a first preset range, the rotational speed of at least one blower of the ventilation system is controlled to maintain a third rotational speed.

[0192] In one possible embodiment, before controlling the rotation speed of at least one supply fan and the rotation speed of at least one exhaust fan in the ventilation system of the ship space according to the pressure difference data and a preset first pressure difference threshold, the acquisition module 401 is further configured to: acquire temperature data of the ship space;

[0193] The control module 402 is also used to: if it is determined that the temperature data is less than or equal to the temperature threshold, execute the step of controlling the speed of at least one supply fan and the speed of at least one exhaust fan in the ventilation system of the ship space according to the pressure difference data and the preset first pressure difference threshold.

[0194] In a possible implementation, the control module 402 is further configured to:

[0195] If it is determined that the temperature data is greater than the temperature threshold, the speed of at least one supply fan of the ventilation system is controlled according to the pressure difference data and the preset second pressure difference threshold, and the speed of at least one exhaust fan of the ventilation system is controlled to be the fifth speed or the initial speed; wherein the second pressure difference threshold is greater than the first pressure difference threshold; the fifth speed is greater than the initial speed.

[0196] In one possible implementation, the control module 402 controls the speed of at least one blower of the ventilation system based on the pressure difference data and a preset second pressure difference threshold value. The control module 402 is configured to:

[0197] If it is determined that a second difference between the pressure difference data and the second pressure difference threshold falls within a second preset range, controlling the rotational speed of at least one blower of the ventilation system to be a fourth rotational speed; wherein the second preset range includes a second upper limit and a second lower limit;

[0198] If it is determined that a second difference between the pressure difference data and the second pressure difference threshold is less than a second lower limit, controlling the rotational speed of at least one blower of the ventilation system to be a sixth rotational speed; wherein the sixth rotational speed is greater than the fourth rotational speed;

[0199] If it is determined that the second difference between the pressure difference data and the second pressure difference threshold is greater than the second upper limit, the speed of at least one blower of the ventilation system is controlled to be a seventh speed; wherein the seventh speed is less than the fourth speed.

[0200] In one possible embodiment, the at least one exhaust fan of the ventilation system includes a first exhaust fan and a second exhaust fan;

[0201] To control the rotation speed of at least one exhaust fan of the ventilation system to a fifth rotation speed, or an initial rotation speed, the control module 402 is configured to:

[0202] The rotation speed of the first exhaust fan is controlled to be the fifth rotation speed, and the rotation speed of the second exhaust fan is controlled to be the initial rotation speed.

[0203] In a possible implementation, the control module 402 is further configured to:

[0204] If it is determined that the duration of the temperature data being greater than the temperature threshold is greater than the preset time, the rotational speed of the second exhaust fan is controlled to be an eighth rotational speed; wherein the eighth rotational speed is greater than the initial rotational speed.

[0205] The control device for the ventilation system of the ship space provided in this embodiment can execute the method provided in the above method embodiment. Its implementation principle and technical effects are similar, and are not described in detail in this embodiment.

[0206] Figure 5 This is a schematic diagram of the structure of the controller provided in this application. Figure 5 As shown, the controller 50 provided in this embodiment includes: at least one processor 501 and a memory 502. Optionally, the controller 50 also includes a communication component 503. The processor 501, the memory 502 and the communication component 503 are connected via a bus 504.

[0207] In a specific implementation process, at least one processor 501 executes the computer-executable instructions stored in the memory 502, so that the at least one processor 501 performs the above method.

[0208] The specific implementation process of the processor 501 can be found in the above method embodiment. Its implementation principle and technical effects are similar and will not be repeated here in this embodiment.

[0209] In the above embodiments, it should be understood that the processor may be a central processing unit (CPU), other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASICs), etc. A general-purpose processor may be a microprocessor or any conventional processor. The steps of the method disclosed in the present invention may be directly executed by a hardware processor or by a combination of hardware and software modules within the processor.

[0210] The memory may include random access memory (RAM) and may also include non-volatile memory (NVM), such as at least one disk storage.

[0211] A bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus. Buses can be categorized as address buses, data buses, and control buses. For ease of illustration, the buses in the drawings of this application are not limited to just one bus or just one type of bus.

[0212] The present application also provides a ventilation system for a ship space. Figure 6 Schematic diagram of the ventilation system for the ship space provided in this application Figure 1 ,like Figure 6 As shown, the ventilation system 60 of the ship space includes:

[0213] As provided in the aforementioned embodiments, the controller 50 , at least one blower 601 , and at least one exhaust fan 602 .

[0214] The controller 50 is connected to at least one blower 601. The controller is also connected to at least one exhaust fan 602.

[0215] The controller 50 is used to control the rotation speed of at least one supply fan 601 and the rotation speed of at least one exhaust fan 602 according to the pressure difference data and the temperature data.

[0216] The ventilation system for the ship space provided in this embodiment has a controller that can execute the method provided in the above method embodiment. The implementation principle and technical effects are similar and will not be described in detail in this embodiment.

[0217] In a possible implementation, the controller may include multiple PID control modules.

[0218] Figure 7 Schematic diagram of the ventilation system for the ship space provided in this application Figure 2 ,like Figure 7 As shown, specifically, the controller may include: a blower PID control module ①, a blower PID control module ②, a blower PID control module ③, an exhaust fan PID control module ①, and an exhaust fan PID control module ②.

[0219] Further, such as Figure 7 As shown, at least one supply fan may include: a variable frequency supply fan ① and a variable frequency supply fan ②; at least one exhaust fan may include: a variable frequency exhaust fan and an auxiliary variable frequency exhaust fan.

[0220] Further, such as Figure 7 As shown, the ventilation system of the ship space may further include a pressure difference sensor and a temperature sensor. The pressure difference sensor is used to obtain pressure difference data, and the temperature sensor is used to obtain temperature data.

[0221] like Figure 7 As shown, the blower PID control module ① is connected to the variable frequency blower ①; the blower PID control module ② is connected to the variable frequency blower ②; and the pressure difference sensor is connected to the blower PID control module ① and the blower PID control module ② respectively.

[0222] Among them, the blower PID control module ① is used to control the speed of the variable frequency blower ① according to the pressure difference data collected by the pressure difference sensor; the blower PID control module ② is used to control the speed of the variable frequency blower ② according to the pressure difference data collected by the pressure difference sensor.

[0223] like Figure 7 As shown, the exhaust fan PID control module ① is connected to the variable frequency exhaust fan; the exhaust fan PID control module ② is connected to the auxiliary variable frequency exhaust fan; and the temperature sensors are connected to the exhaust fan PID control module ① and the exhaust fan PID control module ② respectively.

[0224] Among them, the exhaust fan PID control module ① is used to control the speed of the variable frequency exhaust fan according to the temperature data collected by the temperature sensor; the exhaust fan PID control module ② is used to control the speed of the auxiliary variable frequency exhaust fan according to the temperature data collected by the temperature sensor.

[0225] like Figure 7As shown, the blower PID control module ③ is respectively connected to the blower PID control module ①, the blower PID control module ②, the exhaust fan PID control module ①, the exhaust fan PID control module ② and the temperature sensor.

[0226] Among them, the blower PID control module ③ is used to control the blower PID control module ① and the blower PID control module ② to use the second pressure difference threshold to control the speed of the variable frequency blower ① and the variable frequency blower ② when the temperature data collected by the temperature sensor is greater than the preset temperature threshold.

[0227] Among them, the supply fan PID control module ③ is also used to send control instructions to the exhaust fan PID control module ① and the exhaust fan PID control module ② when the temperature data collected by the temperature sensor is less than or equal to the preset temperature threshold, so that the exhaust fan PID control module ① and the exhaust fan PID control module ② respectively control the speed of the variable frequency exhaust fan and the auxiliary variable frequency exhaust fan.

[0228] Optionally, the exhaust fan PID control module ② is also used to control and increase the speed of the auxiliary variable frequency exhaust fan when the duration of the temperature data collected by the temperature sensor is greater than a preset temperature threshold is greater than a preset time.

[0229] The ventilation system for the ship space provided in this embodiment can implement the method provided in the above method embodiment, and its implementation principle and technical effects are similar, so this embodiment will not be described in detail here.

[0230] The present application also provides a computer program product, including a computer program, which implements the above method when executed by a processor.

[0231] The present application also provides a computer-readable storage medium, in which computer-executable instructions are stored. When a processor executes the computer-executable instructions, the above method is implemented.

[0232] The readable storage medium may be implemented by any type of volatile or non-volatile memory device, or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk. The readable storage medium may be any available medium that can be accessed by a general-purpose or special-purpose computer.

[0233] An exemplary readable storage medium is coupled to a processor so that the processor can read information from the readable storage medium and write information to the readable storage medium. Of course, the readable storage medium can also be an integral part of the processor. The processor and the readable storage medium can be located in an application specific integrated circuit (ASIC). Of course, the processor and the readable storage medium can also exist in the device as discrete components.

[0234] The division of units is merely a logical functional division; actual implementations may employ alternative divisions, such as combining or integrating multiple units or components into another system, or omitting or disabling certain features. Furthermore, any direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection between devices or units, either through an interface, electrical, mechanical, or other means.

[0235] Units described as separate components may or may not be physically separate, and components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0236] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0237] If a function is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the portion that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions for causing a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the various embodiments of the method of the present invention. The aforementioned storage medium includes various media that can store program code, such as USB flash drives, mobile hard drives, read-only memories (ROMs), random access memories (RAMs), magnetic disks, or optical disks.

[0238] Those skilled in the art will appreciate that all or part of the steps in the above-described method embodiments can be implemented using hardware associated with program instructions. The aforementioned program can be stored in a computer-readable storage medium. When executed, the program performs the steps of the above-described method embodiments. The aforementioned storage medium includes various media capable of storing program code, such as ROM, RAM, magnetic disks, or optical disks.

[0239] Finally, it should be noted that those skilled in the art will readily identify other embodiments of the present invention after considering the specification and practicing the invention disclosed herein. The present invention is intended to cover any variations, uses, or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art not disclosed herein. The present invention is not limited to the precise structure described above and illustrated in the accompanying drawings, and various modifications and variations may be made without departing from the scope thereof. The scope of the present invention is limited solely by the appended claims.

Claims

1. A method for controlling a ventilation system of a ship space, characterized in that: include: Acquiring pressure differential data of the ship space; wherein the pressure differential data is the difference between the actual pressure of the ship space and the standard atmospheric pressure; According to the pressure difference data and a preset first pressure difference threshold, a rotation speed of at least one supply fan and a rotation speed of at least one exhaust fan in the ventilation system of the ship space are controlled.

2. The method according to claim 1, characterized in that Controlling the rotation speed of at least one blower in the ventilation system of the ship space according to the pressure difference data and a preset first pressure difference threshold comprises: If it is determined that a first difference between the pressure difference data and the first pressure difference threshold falls within a first preset range, controlling the rotation speed of at least one blower of the ventilation system of the ship space to be a first rotation speed; Otherwise, based on the pressure difference data and the first pressure difference threshold, the speed of at least one blower of the ventilation system is controlled to be a second speed or a third speed; wherein the second speed is greater than the first speed; and the third speed is less than the first speed.

3. The method according to claim 2, characterized in that The first preset range includes a first upper limit and a first lower limit; and controlling the speed of at least one blower of the ventilation system to a second speed or a third speed based on the pressure difference data and the first pressure difference threshold includes: If it is determined that a first difference between the pressure difference data and the first pressure difference threshold is less than the first lower limit, controlling the rotation speed of at least one blower of the ventilation system to a second rotation speed; If it is determined that a first difference between the pressure difference data and the first pressure difference threshold is greater than the first upper limit, the rotational speed of at least one blower of the ventilation system is controlled to be a third rotational speed.

4. The method according to claim 3, characterized in that After controlling the rotation speed of at least one blower of the ventilation system to a second rotation speed, the method further includes: If it is determined that a first difference between the pressure difference data and a first pressure difference threshold value falls within a first preset range, the rotation speed of at least one blower of the ventilation system is controlled to maintain the second rotation speed.

5. The method according to claim 3, characterized in that After controlling the rotation speed of at least one blower of the ventilation system to a third rotation speed, the method further includes: If it is determined that a first difference between the pressure difference data and the first pressure difference threshold falls within a first preset range, the rotational speed of at least one blower of the ventilation system is controlled to maintain the third rotational speed.

6. The method according to any one of claims 1 to 5, characterized in that Before controlling the rotation speed of at least one supply fan and the rotation speed of at least one exhaust fan in the ventilation system of the ship space according to the pressure difference data and the preset first pressure difference threshold, the method further includes: Obtain temperature data of ship spaces; If it is determined that the temperature data is less than or equal to the temperature threshold, the step of controlling the speed of at least one supply fan and the speed of at least one exhaust fan in the ventilation system of the ship space according to the pressure difference data and a preset first pressure difference threshold is executed.

7. The method according to claim 6, characterized in that The method further comprises: If it is determined that the temperature data is greater than the temperature threshold, the speed of at least one supply fan of the ventilation system is controlled according to the pressure difference data and the preset second pressure difference threshold, and the speed of at least one exhaust fan of the ventilation system is controlled to the fifth speed or the initial speed; wherein the second pressure difference threshold is greater than the first pressure difference threshold; and the fifth speed is greater than the initial speed.

8. The method according to claim 7, characterized in that Controlling the rotation speed of at least one blower of the ventilation system according to the pressure difference data and a preset second pressure difference threshold comprises: If it is determined that a second difference between the pressure difference data and the second pressure difference threshold falls within a second preset range, controlling the rotational speed of at least one blower of the ventilation system to a fourth rotational speed; wherein the second preset range includes a second upper limit and a second lower limit; If it is determined that a second difference between the pressure difference data and the second pressure difference threshold is less than the second lower limit, controlling the rotational speed of at least one blower of the ventilation system to a sixth rotational speed; wherein the sixth rotational speed is greater than the fourth rotational speed; If it is determined that the second difference between the pressure difference data and the second pressure difference threshold is greater than the second upper limit, the speed of at least one blower of the ventilation system is controlled to be a seventh speed; wherein the seventh speed is less than the fourth speed.

9. The method according to claim 7, characterized in that The at least one exhaust fan of the ventilation system includes a first exhaust fan and a second exhaust fan; Controlling the rotation speed of at least one exhaust fan of the ventilation system to a fifth rotation speed, or an initial rotation speed, includes: The rotational speed of the first exhaust fan is controlled to be the fifth rotational speed, and the rotational speed of the second exhaust fan is controlled to be the initial rotational speed.

10. The method according to claim 9, characterized in that The method further comprises: If it is determined that the duration of the temperature data being greater than the temperature threshold is greater than a preset time, the speed of the second exhaust fan is controlled to be an eighth speed; wherein the eighth speed is greater than the initial speed.

11. A control device for a ventilation system of a ship space, characterized in that: include: An acquisition module, configured to acquire pressure differential data of a ship space; wherein the pressure differential data is the difference between the actual pressure of the ship space and the standard atmospheric pressure; A control module is used to control the rotation speed of at least one supply fan and at least one exhaust fan in the ventilation system of the ship space according to the pressure difference data and a preset first pressure difference threshold.

12. A controller, characterized in that: include: Memory, processor; The memory stores computer-executable instructions; The processor executes the computer-executable instructions stored in the memory, so that the processor performs the method according to any one of claims 1 to 10.

13. A ventilation system for a ship space, characterized in that: include: The controller according to claim 12, at least one supply fan, and at least one exhaust fan; Wherein, the controller is connected to the at least one blower respectively; the controller is also connected to the at least one exhaust fan respectively.

14. A computer-readable storage medium, characterized in that The computer-readable storage medium stores computer-executable instructions, which are used to implement the method according to any one of claims 1 to 10 when executed by a processor.

15. A computer program product, characterized in that The invention comprises a computer program, which implements the method according to any one of claims 1 to 10 when being executed by a processor.

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