Ventilation system

Abstract

The utility model discloses a ventilation system which comprises a control module, a fan, a wind speed control module, a wind speed detection module, a gas detection module and a mode switching module. Wherein the wind speed control module is connected with the control module and the fan; the air speed detection module is arranged at an air outlet of the fan and is connected with the control module; the gas detection module is connected with the control module and used for detecting the concentration of various gases in the environment where the ventilation system is located and transmitting the concentration to the control module, and the control module is used for responding to the concentration of at least one of the various gases so as to control the wind speed control module to adjust the wind speed of the fan; the mode switching module is connected with the control module and is used for switching the control mode of the fan; wherein the control mode comprises a manual control mode and an automatic control mode. According to the embodiment of the utility model, the detection efficiency and ventilation efficiency of the ventilation system can be improved.

Description

Technical Field

[0001] This utility model relates to the field of intelligent ventilation technology, and in particular to a ventilation system. Background Technology

[0002] Traditional methods for monitoring air quality in hazardous locations and industrial spaces require regular manual testing, resulting in low efficiency. With continuous technological advancements, traditional ventilation systems can no longer meet the high demands of modern hazardous locations and industrial spaces for air quality, energy efficiency, and environmental comfort. The emergence of intelligent ventilation systems not only improves the automation and intelligence of ventilation systems but also provides strong support for the sustainable development of hazardous locations and industrial spaces through precise control of ventilation volume, optimized energy utilization, and reduced energy consumption.

[0003] However, in existing ventilation systems, the fans typically operate at a fixed speed that cannot be adjusted, and the control methods for the fans are relatively simple, resulting in low ventilation efficiency. Utility Model Content

[0004] This invention provides a ventilation system to improve the detection efficiency and ventilation efficiency of the ventilation system.

[0005] This utility model provides a ventilation system, including:

[0006] Control module;

[0007] Fan;

[0008] A wind speed control module is connected to both the control module and the fan.

[0009] A wind speed detection module is installed at the air outlet of the fan, and the wind speed detection module is connected to the control module;

[0010] A gas detection module is connected to the control module. The gas detection module is used to detect the concentration of multiple gases in the environment where the ventilation system is located and transmit the data to the control module. The control module is used to respond to the concentration of at least one of the multiple gases to control the wind speed control module to adjust the wind speed of the fan.

[0011] A mode switching module is connected to the control module, and the mode switching module is used to switch the control mode of the fan; wherein, the control mode includes manual control mode and automatic control mode.

[0012] Optionally, the control module includes:

[0013] An analog signal transceiver unit is connected to the gas detection module, the wind speed control module, and the wind speed detection module, respectively, for receiving analog signals output by the gas detection module and the wind speed detection module, and for outputting analog signals to the wind speed control module.

[0014] The main control unit is connected to the analog signal transceiver unit, the wind speed control module, and the mode switching module, respectively. It is used to process the analog signals received by the analog signal transceiver unit and output control signals. The analog signal transceiver unit receives the control signals.

[0015] Optionally, the gas detection module includes:

[0016] The combustible gas detection unit is connected to the analog signal transceiver unit;

[0017] An oxygen concentration detection unit is connected to the analog signal transceiver unit;

[0018] The carbon dioxide concentration detection unit is connected to the analog signal transceiver unit.

[0019] Optionally, the combustible gas detection unit includes a combustible gas sensor connected to the analog signal transceiver unit;

[0020] And / or, the oxygen concentration detection unit includes: an oxygen sensor connected to the analog signal transceiver unit;

[0021] And / or, the carbon dioxide concentration detection unit includes: a carbon dioxide sensor connected to the analog signal transceiver unit.

[0022] Optionally, the wind speed detection module includes a wind speed sensor connected to the analog signal transceiver unit.

[0023] Optionally, the fan includes a double-blade fan, which includes a first impeller shaft, a second impeller shaft, a first blade, and a second blade.

[0024] The first impeller shaft is connected to the first blade, and the second impeller shaft is connected to the second blade. The first blade and the second blade may have the same or different working states; wherein, the working states include a static state and a moving state.

[0025] And / or, the wind speed control module includes: a frequency converter, which is connected to the control module and the fan respectively.

[0026] Optionally, the ventilation system further includes a temperature and humidity detection module connected to the control module, used to detect the temperature and humidity of the environment in which the ventilation system is located and transmit them to the control module.

[0027] Optionally, the ventilation system further includes a manual speed control module connected to the control module, used to adjust the fan speed in the manual control mode.

[0028] Optionally, the ventilation system further includes an alarm module connected to the control module;

[0029] And / or, an emergency stop module, connected to the control module;

[0030] And / or, the casing.

[0031] Optionally, the ventilation system further includes a display module, which is connected to the control module and is used to interact with the control module;

[0032] The display module includes a first display unit, which is located at the system end; or...

[0033] The display module includes a first display unit and a second display unit, wherein the first display unit is located at the system end and the second display unit is located at the client end.

[0034] The technical solution of this utility model embodiment includes a ventilation system comprising a control module, a fan, a wind speed control module, a wind speed detection module, a gas detection module, and a mode switching module. The gas detection module detects the concentrations of various gases in the environment where the ventilation system is located in real time and transmits the concentration information to the control module. The control module outputs a control signal based on the concentration information of at least one gas, thereby adjusting the fan speed through the wind speed control module. Since the wind speed detection module is located at the fan outlet, it can detect the fan speed in real time and transmit the wind speed information to the control module for feedback on the current wind speed. Therefore, the ventilation system forms a closed-loop control for the fan, improving the precision of fan speed control and thus enhancing ventilation efficiency. Furthermore, since both the wind speed detection module and the gas detection module perform real-time detection, the detection efficiency of the ventilation system is improved. Simultaneously, the inclusion of a mode switching module allows for fan control through different control methods, enhancing the versatility and practicality of the ventilation system.

[0035] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this utility model, nor is it intended to limit the scope of this utility model. Other features of this utility model will become readily apparent from the following description. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0037] Figure 1 A schematic diagram of the structure of a ventilation system provided by this utility model;

[0038] Figure 2 A schematic diagram of another ventilation system provided by this utility model;

[0039] Figure 3 A schematic diagram of the structure of an analog signal transceiver unit provided by this utility model;

[0040] Figure 4 A schematic diagram of another analog signal transceiver unit provided by this utility model;

[0041] Figure 5 A schematic diagram of the structure of a main control unit provided by this utility model;

[0042] Figure 6 A schematic diagram of the structure of a sensor provided by this utility model;

[0043] Figure 7 A schematic diagram of the structure of a wind speed control module provided by this utility model;

[0044] Figure 8 A schematic diagram of the structure of a manual speed control module provided by this utility model;

[0045] Figure 9 A schematic diagram of the structure of an alarm module provided by this utility model;

[0046] Figure 10 A schematic diagram of the structure of an emergency stop module provided by this utility model;

[0047] Figure 11 A schematic diagram of the structure of a display module provided by this utility model;

[0048] Figure 12 This is a schematic diagram of the structure of a mode switching module provided by this utility model. Detailed Implementation

[0049] 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. 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 protection scope of the present invention.

[0050] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model 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 utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and their variations, are intended to cover 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.

[0051] This utility model provides a ventilation system. Figure 1 A schematic diagram of a ventilation system provided by this utility model is shown below. Figure 1 The ventilation system includes a control module 10, a fan 20, a wind speed control module 30, a wind speed detection module 40, a gas detection module 50, and a mode switching module 60.

[0052] The system includes a wind speed control module 30 connected to both the control module 10 and the fan 20. The wind speed control module 30 receives control signals from the control module 10 and adjusts the wind speed of the fan 20. A wind speed detection module 40 is located at the air outlet of the fan 20 and is connected to the control module 10. A gas detection module 50 is connected to the control module 10 and detects the concentrations of various gases in the environment where the ventilation system is located, transmitting this information to the control module 10. The control module 10 responds to the concentration of at least one of the gases to control the wind speed control module 30 and adjust the wind speed of the fan 20. A mode switching module 60 is connected to the control module 10 and is used to switch the control mode of the fan 20; the control modes include manual control mode and automatic control mode.

[0053] Specifically, the gas detection module 50 detects the concentrations of various gases in the environment where the ventilation system is located in real time and transmits this information to the control module 10. These gases may include, for example, oxygen, combustible gases, and carbon dioxide. When the concentration of at least one gas is too high or too low, the control module 10 outputs a corresponding control signal. The wind speed control module 30 receives the control signal and adjusts the wind speed of the fan 20. Furthermore, the wind speed detection module 40 detects the wind speed of the fan 20 in real time and feeds it back to the control module 10 to form a closed-loop control, improving the precise control of the fan speed and thus enhancing ventilation efficiency. Moreover, the inclusion of a mode switching module 60 allows the fan 20 in this ventilation system to simultaneously achieve manual and automatic wind speed control, thereby improving the versatility and practicality of the ventilation system.

[0054] The technical solution of this embodiment of the utility model involves setting up a ventilation system including a control module 10, a fan 20, a wind speed control module 30, a wind speed detection module 40, a gas detection module 50, and a mode switching module 60. The gas detection module 50 detects the concentrations of various gases in the environment where the ventilation system is located in real time and transmits the concentration information to the control module 10. The control module 10 outputs a control signal based on the concentration information of at least one gas, thereby adjusting the wind speed of the fan 20 through the wind speed control module 30. Furthermore, since the wind speed detection module 40 is located at the air outlet of the fan 20, it can detect the wind speed of the fan 20 in real time and transmit the wind speed information to the control module 10 for feedback on the current wind speed. Therefore, the ventilation system forms a closed-loop control for the fan 20, which improves the precise control of the fan speed and thus improves ventilation efficiency. Moreover, since both the wind speed detection module 40 and the gas detection module 50 perform real-time detection, the detection efficiency of the ventilation system is improved. At the same time, by setting the mode switching module 60, the fan 20 can be controlled through different control methods, which can improve the versatility and practicality of the ventilation system.

[0055] Optionally, the fan 20 includes a double-blade fan, which includes a first impeller shaft, a second impeller shaft, a first blade, and a second blade.

[0056] In this configuration, the first impeller shaft is connected to the first blade, and the second impeller shaft is connected to the second blade. For example, the impeller shafts are mechanically connected to each blade, and the impeller shafts can provide support for each blade. Exemplarily, the first and second impeller shafts can be concentric shafts. The first impeller shaft can be an outer hollow shaft, on which the first blade is mounted; the second impeller shaft can be an inner solid shaft, on which the second blade is mounted.

[0057] The first and second blades may operate in the same or different states; these states include a stationary state and a moving state, with the moving state being blade rotation. For example, both the first and second blades can be stationary or moving, or one can be stationary while the other is moving. That is, each layer of blades in a double-layer configuration can rotate independently, serving as a backup, or both layers can rotate simultaneously to increase exhaust and supply air volume. It is understood that when the control module 10 controls one layer of blades (e.g., the first blade) to operate, the other layer of blades (e.g., the second blade) automatically rotates to a position parallel to the axis centerline to reduce the impact on the direction of airflow and the resistance of the blade operation.

[0058] Figure 2 For a schematic diagram of another ventilation system provided by this utility model, see [link / reference]. Figure 2 Based on the above embodiments, the control module 10 may optionally include an analog signal transceiver unit 11 and a main control unit 12.

[0059] The analog signal transceiver unit 11 is connected to the gas detection module 50, the wind speed control module 30, and the wind speed detection module 40, respectively. The analog signal transceiver unit 11 receives analog signals output from the gas detection module 50 and the wind speed detection module 40, and also outputs analog signals to the wind speed control module 30. The main control unit 12 is connected to the analog signal transceiver unit 11, the wind speed control module 30, and the mode switching module 60, respectively. The main control unit 12 processes the analog signals received by the analog signal transceiver unit 11 and outputs control signals. The analog signal transceiver unit 11 receives the control signals and transmits them to the wind speed control module 30 to adjust the wind speed of the fan 20. By including the analog signal transceiver unit 11 and the main control unit 12 in the control module 10, the analog signal transceiver unit 11 can be dedicated to the transmission of analog signals, while the main control unit 12 can be dedicated to logic control and decision-making. This clear division of labor helps improve the accuracy of the control module 10.

[0060] See also Figure 2Optionally, the gas detection module 50 includes a combustible gas detection unit 51, an oxygen concentration detection unit 52, and a carbon dioxide concentration detection unit 53, all connected to the analog signal transceiver unit 11. The combustible gas detection unit 51 detects the concentration of combustible gas in the environment where the ventilation system is located, and outputs this concentration as an analog signal to the analog signal transceiver unit 11. The oxygen concentration detection unit 52 detects the oxygen concentration in the environment where the ventilation system is located, and outputs this concentration as an analog signal to the analog signal transceiver unit 11. The carbon dioxide concentration detection unit 53 detects the carbon dioxide concentration in the environment where the ventilation system is located, and outputs this concentration as an analog signal to the analog signal transceiver unit 11.

[0061] See also Figure 2 Optionally, the ventilation system also includes a temperature and humidity detection module 70, which is connected to the control module 10. The temperature and humidity detection module 70 is used to detect the temperature and humidity of the environment where the ventilation system is located and transmit them to the control module 10. Figure 2 The example provided illustrates a temperature and humidity detection module 70 connected to an analog signal transceiver unit 11. By configuring the temperature and humidity detection module 70 to detect the temperature and humidity of the environment where the ventilation system is located, the control module 10 can adjust the fan speed of the fan 20 based on the temperature and humidity values, thereby adjusting the ventilation volume of the environment where the ventilation system is located. For example, when the humidity is high, the fan speed of the fan 20 can be increased to increase the ventilation volume and quickly reduce the humidity; similarly, when the temperature is high, the fan speed of the fan 20 can be increased to regulate the temperature through ventilation and heat dissipation, improving environmental comfort. Precise control can avoid over-ventilation or under-ventilation, thereby optimizing energy utilization and reducing unnecessary energy consumption. At the same time, a suitable temperature and humidity environment helps reduce corrosion and damage to the ventilation system, extending its service life.

[0062] See also Figure 2 Optionally, the ventilation system also includes a manual speed control module 80 connected to the control module 10. The manual speed control module 80 is used to adjust the wind speed of the fan 20 in manual control mode. Figure 2 The manual speed control module 80 is exemplarily shown connected to the main control unit 12. For example, in emergency or special circumstances, the operating status of the fan 20 can be quickly adjusted via the manual speed control module 80. Alternatively, under complex or special operating conditions, operators can manually adjust the fan's operating parameters according to the actual situation to achieve optimal results.

[0063] See also Figure 2 Optionally, the ventilation system also includes an alarm module 90 connected to the control module 10. Figure 2 An example is given of the alarm module 90 being connected to the main control unit 12.

[0064] The alarm module 90 can provide both audible and visual alarms, with different alarm methods depending on the concentration of the gas. For example, when the oxygen concentration detection unit 52 detects that the oxygen concentration in the environment where the ventilation system is located is lower than a preset value, it alerts the system by flashing a yellow light and sounding an alarm. The frequency of the flashing yellow light and the volume of the alarm are directly related to the oxygen concentration; the lower the oxygen concentration, the higher the frequency of the flashing yellow light and the louder the alarm. When the combustible gas detection unit 51 detects the presence of combustible gas in the environment where the ventilation system is located, it alerts the system by flashing a red light and sounding an alarm. The frequency of the flashing red light and the volume of the alarm are directly related to the combustible gas concentration; the higher the combustible gas concentration, the higher the frequency of the flashing red light and the louder the alarm.

[0065] See also Figure 2 Optionally, the ventilation system also includes an emergency stop module 91 connected to the control module 10. The emergency stop module 91 is used to control the ventilation system to stop in an emergency to prevent secondary damage caused by the continued operation of the ventilation system, thereby reducing maintenance costs. Figure 2 An example is shown in which the emergency stop module 91 is connected to the main control unit 12.

[0066] See also Figure 2 Optionally, the ventilation system also includes a display module 92 connected to the control module 10. Figure 2 The example provided illustrates a display module 92 connected to a main control unit 12. The display module 92 is used to display data information transmitted by various functional modules received by the main control unit 12. Exemplarily, the data information may include: oxygen concentration, combustible gas concentration, carbon dioxide concentration, ambient temperature and humidity, fan speed, manual / automatic status, and alarm information.

[0067] The following description of the possible structures of each module in the ventilation system is not intended to limit the scope of this utility model.

[0068] Figure 3 This is a structural schematic diagram of an analog signal transceiver unit provided by this utility model, specifically a structural schematic diagram of the analog signal receiving subunit in the analog signal transceiver unit 11, see [link / reference]. Figure 3The analog signal receiving subunit 111 includes a first power terminal L4+, a second power terminal M4, and multiple sets of first connection terminals 113. Each set of first connection terminals 113 includes a first connection terminal J1 and a second connection terminal J2. The first power terminal L4+ and the second power terminal M4 are connected to the power terminals of the combustible gas detection unit 51, the oxygen concentration detection unit 52, the carbon dioxide concentration detection unit 53, the temperature and humidity detection module 70, and the wind speed detection module 40. Each set of first connection terminals 113 is connected to the signal terminals of the combustible gas detection unit 51, the oxygen concentration detection unit 52, the carbon dioxide concentration detection unit 53, the temperature and humidity detection module 70, and the wind speed detection module 40, respectively. Figure 3 The example shows multiple sets of first connection terminals 113, including five sets of first connection terminals 113. It is understood that the analog signal receiving subunit 111 is connected to the main control unit 12.

[0069] Figure 4 This is a schematic diagram of another analog signal transceiver unit provided by this utility model, specifically a schematic diagram of the analog signal transmitting subunit in analog signal transceiver unit 11, see [link / reference]. Figure 4 The analog signal transmitting subunit 112 includes a third connection terminal J3 and a fourth connection terminal J4, which are connected to the signal terminal of the wind speed control module 30. The power supply terminal of the wind speed control module 30 is connected to the main control unit 12. It can be understood that the analog signal transmitting subunit 112 is connected to the main control unit 12.

[0070] Figure 5 A schematic diagram of the main control unit provided by this utility model is shown below. Figure 5 The main control unit 12 includes a third power terminal L+, a fourth power terminal M, a fifth power terminal M1, a sixth power terminal M2, a seventh power terminal L3+, and an eighth power terminal M3, as well as a fifth connection terminal J5 to an eleventh connection terminal J11, which are connected to the respective functional modules. The details are described below.

[0071] Based on the above embodiments, the combustible gas detection unit 51 includes a combustible gas sensor, the oxygen concentration detection unit 52 includes an oxygen sensor, the carbon dioxide concentration detection unit 53 includes a carbon dioxide sensor, the temperature and humidity detection module 70 includes a temperature and humidity sensor, and the wind speed detection module 40 includes a wind speed sensor. Each sensor is connected to the analog signal transceiver unit 11, specifically, to the analog signal receiving subunit 111. Each sensor may include a power supply terminal IN11+, a power supply terminal IN11-, a signal terminal OUT12+, and a signal terminal OUT12-. The following description assumes that all sensors have the same structure. It is understood that in other embodiments, the structures of the sensors may differ.

[0072] Figure 6A schematic diagram of the structure of a sensor provided by this utility model is shown below. Figure 6 The sensor's power supply terminal IN11+ is connected to the first power supply terminal L4+ of the analog signal receiving subunit 111, and the sensor's power supply terminal IN11- is connected to the second power supply terminal M4 of the analog signal receiving subunit 111. The sensor's signal terminal OUT12+ is connected to the first connection terminal J1 of the analog signal receiving subunit 111, and the sensor's signal terminal OUT12- is connected to the second connection terminal J2 in the same group as the first connection terminal J1 in the analog signal receiving subunit 111. For example, when the sensor is a combustible gas sensor, the combustible gas sensor's signal terminals OUT12+ and OUT12- are connected to the first connection terminal J1 and the second connection terminal J2 in the first group of first connection terminals 113; when the sensor is an oxygen sensor, the oxygen sensor's signal terminals OUT12+ and OUT12- are connected to the first connection terminal J1 and the second connection terminal J2 in the second group of first connection terminals 113. The first power supply terminal L4+ and the second power supply terminal M4 of the analog signal receiving subunit 111 are used to power the sensor. The sensor can detect various data in the environment where the ventilation system is located in real time, and convert these data into analog signals within a preset range before transmitting them to the analog signal receiving subunit 111. The preset range is, for example, 4-20mV.

[0073] Figure 7 A schematic diagram of the structure of a wind speed control module provided by this utility model is shown below. Figure 7 Optionally, the wind speed control module 30 includes a frequency converter 31, which is connected to the control module 10 and the fan 20. The first output terminal U1, the second output terminal V1, and the third output terminal W1 of the frequency converter 31 are all connected to the fan 20.

[0074] The frequency converter 31 includes a main circuit 311 and a control circuit 312.

[0075] The first power supply terminal U of the main circuit 311 is connected to the first power supply line L1, the second power supply terminal V of the main circuit 311 is connected to the second power supply line L2, the third power supply terminal W of the main circuit 311 is connected to the third power supply line L3, and the grounding terminal of the main circuit 311 is connected to the ground wire PE. The main circuit 311 is used to convert AC power to DC power, and then convert DC power to AC power with adjustable frequency and voltage to control the wind speed of the fan 20.

[0076] The power supply terminal VCC+ of control loop 312 is connected to the seventh power supply terminal L3+ of main control unit 12, and the power supply terminal VCC- of control loop 312 is connected to the eighth power supply terminal M3 of main control unit 12, for supplying power to control loop 312. The signal terminal XH1 of control loop 312 is connected to the third connection terminal J3 of analog signal transmitting subunit 112, and the signal terminal XH2 of control loop 312 is connected to the fourth connection terminal J4 of analog signal transmitting subunit 112. Control loop 312 is used to receive analog signals output by analog signal transmitting subunit 112, and then control main loop 311 to control the wind speed of fan 20. For example, main loop 311 outputs AC power with adjustable frequency and voltage according to the received analog signal to change the wind speed of fan 20. The specific working principle of inverter 31 can be found in the description of related technologies, and will not be repeated in this embodiment.

[0077] Figure 8 A schematic diagram of the structure of a manual speed control module provided by this utility model is shown below. Figure 8 Optionally, the manual speed control module 80 includes a knob 81. In manual control mode, the speed of the fan 20 can be directly adjusted to control its airflow by adjusting the value of the knob 81.

[0078] Specifically, the control terminal CT1+ of the manual speed control module 80 is connected to the sixth power terminal M2 of the main control unit 12, the signal terminal XH3 of the manual speed control module 80 is connected to the eighth connection terminal J8 of the main control unit 12, and the control terminal CT1- of the manual speed control module 80 is connected to the ninth connection terminal J9 of the main control unit 12.

[0079] Figure 9 A schematic diagram of the structure of an alarm module provided by this utility model is shown below. Figure 9 Optionally, the alarm module 90 includes a sound alarm unit 901 and a light alarm unit 902, and the sound alarm unit 901 and the light alarm unit 902 can be configured to work simultaneously or individually.

[0080] Specifically, the common terminal COM1 of the alarm module 90 is connected to the eighth power terminal M3 of the main control unit 12, the control terminal CT2+ of the alarm module 90 is connected to the tenth connection terminal J10 of the main control unit 12, and the control terminal CT2- of the alarm module 90 is connected to the eleventh connection terminal J11 of the main control unit 12.

[0081] Figure 10 See the schematic diagram of an emergency stop module provided by this utility model. Figure 10 Optionally, the emergency stop module 91 is connected to the control module 10. Specifically, the first end T1 of the emergency stop module 91 is connected to the fifth power terminal M1 of the main control unit 12, and the second end T2 of the emergency stop module 91 is connected to the seventh connection terminal J7 of the main control unit 12.

[0082] Figure 11 A schematic diagram of the structure of a display module provided by this utility model is shown below. Figure 11 Optionally, the display module 92 is connected to the control module 10, and the display module 92 is used to interact with the control module 10 to display various data received by the control module 10.

[0083] Specifically, the network connection terminal WK1 of the display module 92 is connected to the network port of the main control unit 12, the first terminal T3 of the display module 92 is connected to the third power terminal L+ of the main control unit 12, and the second terminal T4 of the display module 92 is connected to the fourth power terminal M of the main control unit 12.

[0084] Optionally, the display module 92 includes a touchscreen. By including a touchscreen in the display module 92, setting parameters can be manually input to control the ventilation system. For example, in manual control mode, parameters can be manually input on the touchscreen to adjust the fan speed 20. Simultaneously, it can also be used to verify on-site concentration information, fan speed, and mutual verification between alarm devices to ensure equipment accuracy.

[0085] Since the display module 92 can display various data of the environment where the ventilation system is located in real time, it can ensure the safety of personnel in that environment. Therefore, the display module 92 can be set up independently at the system end, that is, placed independently in the environment where the ventilation system is located. For example, the display module 92 includes a first display unit, which is located at the system end.

[0086] Understandably, based on this, the display module 92 can also be set on both the system end and the client end, so that the client can view various data in the environment before entering the environment. For example, the display module includes a first display unit and a second display unit, with the first display unit located on the system end and the second display unit located on the client end.

[0087] Figure 12 This is a schematic diagram of the structure of a mode switching module provided by this utility model. See also: Figure 12 The common terminal COM2 of the mode switching module 60 is connected to the fifth power terminal M1 of the main control unit 12, the manual terminal T5 of the mode switching module 60 is connected to the fifth connection terminal J5 of the main control unit 12, and the automatic terminal T6 of the mode switching module 60 is connected to the sixth connection terminal J6 of the main control unit 12.

[0088] Optionally, the ventilation system also includes a housing made of explosion-proof material. This housing effectively mitigates energy propagation and reduces harm to personnel and property in the event of an explosion in the environment in which the ventilation system is located, thereby improving the safety performance of the ventilation system and ensuring personnel safety. Furthermore, it reduces the generation of static electricity during startup and minimizes the risk of explosions and fires caused by frictional sparks during operation.

[0089] In summary, the beneficial effects of the ventilation system provided in this embodiment are as follows:

[0090] 1. With the addition of a display module and multiple detection modules, it can automatically detect and display various data in the environment, thereby eliminating the need for regular manual inspections, improving detection efficiency, and effectively controlling safety accidents such as fires and explosions caused by hazardous gases.

[0091] 2. The use of explosion-proof materials in the casing ensures good safety performance.

[0092] 3. Due to the installation of a gas detection module, the system can monitor the oxygen content, combustible gas concentration, carbon dioxide concentration, temperature and humidity, and fan exhaust speed in the ventilation system environment in real time. Each sensor transmits the information collected on-site to the control module in the form of analog signals. The control module automatically analyzes and processes the data, provides data detection and alarm prompts for hazardous gases on-site, and outputs analog signals to control the frequency converter. The frequency converter controls the fan speed, and the detection results of the fan exhaust speed are fed back to the control module, thus forming a closed-loop control system for more precise control.

[0093] 4. By setting up a two-layer design along the impeller shaft, each layer of blades can rotate independently to serve as a backup, and both layers can rotate together to increase the amount of air supplied and discharged. When the control module is designed so that one layer of blades is running, the other layer automatically rotates parallel to the shaft centerline and reduces the impact on the direction of air discharge and the resistance of the running blades.

[0094] 5. Each sensor can detect the oxygen content, combustible gas concentration, carbon dioxide concentration, temperature and humidity, and fan exhaust speed in the air in real time.

[0095] 6. By setting the display module, it can display the oxygen content, combustible gas concentration, carbon dioxide concentration, temperature and humidity, fan exhaust speed, manual / automatic status, fan speed, alarm information and manually input parameters in the air in real time.

[0096] 7. By setting up alarm modules including sound alarm units and light alarm units, alarms are triggered when various indicators in the environment are not within safe ranges, prompting personnel to identify unsafe factors on site and evacuate in an emergency to ensure personnel safety.

[0097] In summary, the ventilation system provided by this utility model can effectively exhaust combustible gases in environments containing combustible gases or those harmful to human health, playing an irreplaceable role in preventing fires and explosions that could cause personal injury and property damage. The fan is controlled by a frequency converter to reduce mechanical vibration and impact loads, thereby extending its service life. Multiple sensors intelligently detect and monitor the oxygen concentration, combustible gas concentration, temperature, humidity, and fan speed in the air at the work site in real time, automatically controlling the fan speed and displaying the concentration and speed information on a touchscreen. This adjusts the supply and exhaust air volume to ensure the freshness and quality of the air at the work site. Furthermore, according to specific functions and design needs, related equipment and components can be integrated to form a system, achieving local and remote intelligent control and management to ensure ventilation safety. The intelligent ventilation system can automatically adjust the ventilation volume according to changes in the site environment, achieving intelligent management and reducing labor costs.

[0098] Therefore, the ventilation system provided in this embodiment of the invention ensures that air quality, temperature, humidity, and other parameters in hazardous locations and industrial spaces meet safety requirements by monitoring and adjusting environmental parameters in real time, thereby protecting the health and safety of personnel. Simultaneously, it improves the automation and intelligence level of the ventilation system and provides strong support for the sustainable development of hazardous locations and industrial spaces by precisely controlling ventilation volume, optimizing energy utilization, and reducing energy consumption. In terms of safety protection, the ventilation system can monitor key parameters such as the concentration of combustible gases, oxygen content, and temperature in the air in real time, and automatically adjust and control them according to preset values. When an abnormality is detected, the system can quickly activate the emergency ventilation mode to remove combustible gases and ensure the safe evacuation of personnel. The ventilation system can also achieve more comprehensive safety protection by linking with safety facilities such as fire alarm systems and gas leak detection systems. In practical applications, the ventilation system has been widely used in oil depots, underground spaces, factories, and hazardous locations. For example, in hospitals, the ventilation system can monitor the air quality in the operating room in real time to ensure the safety of the surgical procedure; in underground spaces, the ventilation system can effectively remove harmful gases and prevent accidents such as asphyxiation.

[0099] It should be understood that the various forms of the process shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this utility model can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this utility model can be achieved, and this is not limited herein.

[0100] The specific embodiments described above do not constitute a limitation on the scope of protection of this utility model. 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 utility model should be included within the scope of protection of this utility model.

Claims

1. A ventilation system, characterized in that, include: Control module; Fan; A wind speed control module is connected to both the control module and the fan. A wind speed detection module is installed at the air outlet of the fan, and the wind speed detection module is connected to the control module; A gas detection module is connected to the control module. The gas detection module is used to detect the concentration of multiple gases in the environment where the ventilation system is located and transmit the data to the control module. The control module is used to respond to the concentration of at least one of the multiple gases to control the wind speed control module to adjust the wind speed of the fan. A mode switching module is connected to the control module, and the mode switching module is used to switch the control mode of the fan; wherein, the control mode includes manual control mode and automatic control mode.

2. The ventilation system according to claim 1, characterized in that, The control module includes: An analog signal transceiver unit is connected to the gas detection module, the wind speed control module, and the wind speed detection module, respectively, for receiving analog signals output by the gas detection module and the wind speed detection module, and for outputting analog signals to the wind speed control module. The main control unit is connected to the analog signal transceiver unit, the wind speed control module, and the mode switching module, respectively. It is used to process the analog signals received by the analog signal transceiver unit and output control signals. The analog signal transceiver unit receives the control signals.

3. The ventilation system according to claim 2, characterized in that, The gas detection module includes: The combustible gas detection unit is connected to the analog signal transceiver unit; An oxygen concentration detection unit is connected to the analog signal transceiver unit; The carbon dioxide concentration detection unit is connected to the analog signal transceiver unit.

4. The ventilation system according to claim 3, characterized in that, The combustible gas detection unit includes a combustible gas sensor, which is connected to the analog signal transceiver unit; And / or, the oxygen concentration detection unit includes: an oxygen sensor connected to the analog signal transceiver unit; And / or, the carbon dioxide concentration detection unit includes: a carbon dioxide sensor connected to the analog signal transceiver unit.

5. The ventilation system according to claim 2, characterized in that, The wind speed detection module includes a wind speed sensor connected to the analog signal transceiver unit.

6. The ventilation system according to claim 1, characterized in that, The fan includes a double-blade fan, which includes a first impeller shaft, a second impeller shaft, a first blade, and a second blade. The first impeller shaft is connected to the first blade, and the second impeller shaft is connected to the second blade. The first blade and the second blade may have the same or different working states; wherein, the working states include a static state and a moving state. And / or, the wind speed control module includes: a frequency converter, which is connected to the control module and the fan respectively.

7. The ventilation system according to claim 1, characterized in that, Also includes: A temperature and humidity detection module, connected to the control module, is used to detect the temperature and humidity of the environment in which the ventilation system is located and transmit the data to the control module.

8. The ventilation system according to claim 1, characterized in that, Also includes: A manual speed control module, connected to the control module, is used to adjust the fan speed in the manual control mode.

9. The ventilation system according to claim 1, characterized in that, Also includes: An alarm module is connected to the control module; And / or, an emergency stop module, connected to the control module; And / or, the casing.

10. The ventilation system according to claim 1, characterized in that, It also includes a display module, which is connected to the control module and is used to interact with the control module; The display module includes a first display unit, which is located at the system end; or... The display module includes a first display unit and a second display unit, wherein the first display unit is located at the system end and the second display unit is located at the client end.

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