Intelligent monitoring and control gas path distribution device

Abstract

The invention relates to the technical field of gas path distribution, in particular to an intelligent monitoring and control gas path distribution device. The invention aims to provide a gas path distribution device with high integration level and small volume, namely an intelligent monitoring and control gas path distribution device, which comprises a lower shell and an upper shell, the upper shell is hermetically pressed and fixed above the lower shell, a power supply filter and a centrifugal fan are arranged in a left cavity, and the centrifugal fan is arranged in a right cavity. A horizontally-arranged bottom plate is fixed in the upper right cavity, a gas path distribution circuit control board is arranged on the bottom plate, a cover plate is arranged on the upper shell in a sealed mode, and the gas path distribution circuit control board comprises a power module, a CAN module, a self-checking module, a watchdog module, a flow collection module, an air volume calculation module and an air volume control module in an integrated mode. The device disclosed by the invention is small in occupied area and high in overall integration degree.

Description

Technical Field

[0001] The present invention relates to the technical field of gas path distribution, and in particular to a gas path distribution device with intelligent monitoring and control. Background Art

[0002] The air distribution device is installed at the air outlet. Its primary function is to evenly distribute the clean air entering the distributor to each air path, thereby providing air for the mask. Traditional air distribution devices have complex internal components and a low degree of integration, resulting in a large size. This limits the number of possible installation locations and requires adjustments to the position and shape of other components. Therefore, there is an urgent need for an air distribution device with a higher degree of integration and a smaller footprint. Summary of the Invention

[0003] The object of the present invention is to provide a gas distribution device with high integration and small size, that is, a gas distribution device with intelligent monitoring and control.

[0004] The present invention is achieved by adopting the following technical solutions: An intelligent monitoring and control gas distribution device comprises a barrel-shaped lower shell and a cylindrical upper shell. A lower partition is provided in the lower shell so that the space in the lower shell is divided into a lower left cavity and a lower right cavity. A plurality of air guide pipe openings are provided at the front side wall of the lower right cavity. The end of each air guide pipe opening in the lower right cavity is equipped with a gas flow sensor. An upper partition is provided in the upper shell so that the space in the upper shell is divided into an upper left cavity and an upper right cavity. The upper shell is adapted to the lower shell and the upper shell is sealed and pressed above the lower shell. The upper left cavity and the lower left cavity are connected to form The left cavity, the upper partition and the lower partition are flush with each other to form a middle partition, the left wall of the lower left cavity is provided with an air inlet port, the left cavity is provided with a power filter and a centrifugal fan arranged along the left and right directions, the right end of the centrifugal fan is fixed to the left side of the middle partition, the air inlet of the centrifugal fan is connected with the air inlet port correspondingly, the middle partition is provided with gas through holes arranged along the left and right directions, a horizontally arranged bottom plate is fixed in the upper right cavity, the bottom plate is provided with a gas path distribution circuit control board, the bottom plate is also provided with a wiring hole, the upper partition is provided with a threading notch, and the upper shell is sealed with a cover plate; The gas distribution circuit control board includes a main control MCU, which integrates a power module, a CAN module, a self-test module, a watchdog module, a flow acquisition module, an air volume calculation module, and an air volume control module. The power filter is connected to the power module through a wire gap, and the air flow sensor is connected to the main control MCU through a wiring hole. The main control MCU communicates with the host computer through the CAN module; the self-test module is used to check whether multiple gas flow sensors, centrifugal fans and CAN modules are working properly; the watchdog module ensures the normal operation of the main control NCU through a preset timer; the flow acquisition module is used to read the air flow sensor data, namely the absolute pressure Pa, temperature ta and differential pressure △p between the two pressure holes of the gas in the gas pipeline; the air volume calculation module calculates the air volume according to the data collected by the flow acquisition module using the following formula The air volume control module adjusts and controls the speed of the centrifugal fan through the motor control module according to the air volume calculated by the air volume calculation module, so that the actual air volume is controlled within the range of 5.7 to 6.6 m³ / h.

[0005] When in use, the air inlet port is connected to the air inlet duct, and the air guide port is connected to the mask. When working, after the power is turned on, the air path distribution device immediately activates the built-in self-test module to ensure the normal operation of the device. If an abnormality is found during the self-test process, the alarm mechanism is immediately triggered and reported to the host computer for processing. If the self-test is successfully completed, the device enters the normal working mode, the flow acquisition module begins to collect data, and then the air volume calculation module converts the collected data into air volume. Finally, the air volume calculation module judges the actual air volume. If the air volume is not within the range of 5.7 to 6.6m³ / h, that is, it does not meet the required air volume standard, it is necessary to control the speed of the centrifugal fan to make additional adjustments to the air volume. If the required air volume standard has been met, the speed of the centrifugal fan is kept unchanged. If the air volume exceeds 6.6m³ / h, the speed of the centrifugal fan needs to be reduced.

[0006] Furthermore, each air guide pipe port is provided with a manual valve at the end outside the lower shell, so as to facilitate timely closing or opening as needed.

[0007] Furthermore, there are four air guide pipe openings and four gas flow meters, and the structure is specific and standardized.

[0008] Furthermore, the centrifugal fan is located at the rear of the left cavity, and the power filter is located at the front of the left cavity, and the structure is specific and standardized.

[0009] Furthermore, the gas through holes are provided on the lower partition plate, and the structure is concrete and standardized.

[0010] Furthermore, four two-color LED indicator lights are respectively provided at positions corresponding to the four air duct openings on the upper shell. Under normal working conditions, when the air volume calculated by the air volume calculation module is not within the range of 5.7-6.6 m³ / h, the main control MCU controls the corresponding two-color LED indicator light to display red, and at the same time, the main control MCU issues an air volume alarm message. When the air volume calculated by the air volume calculation module is within the range of 5.7-6.6 m³ / h, the main control MCU controls the corresponding two-color LED indicator light to display green; in standby mode, the corresponding two-color LED indicator light is off.

[0011] Furthermore, the centrifugal fan is a booster blower.

[0012] Furthermore, a start-stop button is provided on the upper shell. When the device is working normally, the main control MCU will receive the feedback signal of the centrifugal fan. If there is a feedback value, it is in the start state. At this time, if the start-stop button is pressed, the device stops working. If there is no feedback value, it is in the stop state. At this time, press the start-stop button and the device starts working.

[0013] The beneficial effects produced by the present invention are as follows: the device described in the present invention cleverly controls the air intake volume through a centrifugal fan in conjunction with an air path distribution control circuit board, so that the air path is effectively regulated; through the upper and lower layer structure arrangement, the device occupies a small area and has a high overall integration. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0016] Figure 1 Schematic diagram of the overall structure of the gas distribution device of the present invention; Figure 2 for Figure 1 Schematic diagram of the structure without the cover; Figure 3 for Figure 2 The schematic diagram of the structure without the upper shell portion; Figure 4 This is a schematic diagram of the gas distribution circuit control panel.

[0017] In the figure: 1-upper shell, 2-lower shell, 3-air guide pipe opening, 4-gas flow sensor, 5-inlet pipe opening, 6-centrifugal fan, 7-power filter, 8-upper partition, 9-lower partition, 10-gas through hole, 11-wiring hole, 12-threading notch, 13-cover, 14-manual valve, 15-dual-color LED indicator light, 16-start / stop button, 17-base plate. DETAILED DESCRIPTION

[0018] In order to more clearly understand the above-mentioned objectives, features and advantages of the present invention, the scheme of the present invention will be further described below. It should be noted that, in the absence of conflict, the embodiments of the present invention and the features therein can be combined with each other.

[0019] In the description, it should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance. It should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood broadly. For example, they can refer to fixed connections, removable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms based on specific circumstances.

[0020] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present invention, rather than all the embodiments.

[0021] The specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0022] like Figure 1 、 2, 3, and 4, an intelligent monitoring and control gas distribution device comprises a barrel-shaped lower shell 2 and a cylindrical upper shell 1. A lower partition plate 9 is provided in the lower shell 2 so that the space in the lower shell 2 is divided into a lower left cavity and a lower right cavity. A plurality of air guide pipe openings 3 are provided at the front side wall of the lower right cavity. The end of each air guide pipe opening 3 located in the lower right cavity is equipped with a gas flow sensor 4; an upper partition plate 8 is provided in the upper shell 1 so that the space in the upper shell 1 is divided into an upper left cavity and an upper right cavity. The upper shell 1 is adapted to the lower shell 2 and the upper shell 1 is sealed and pressed above the lower shell 2. The upper left cavity and the lower left cavity are communicated to form a left Cavity, the upper partition 8 is flush with the lower partition 9 to form a middle partition, the left side wall of the lower left cavity is provided with an air inlet port 5, the left cavity is provided with a power filter 7 and a centrifugal fan 6 arranged along the left and right directions, the right end of the centrifugal fan 6 is fixed to the left side of the middle partition, the air inlet of the centrifugal fan 6 is connected with the air inlet port 5 correspondingly, the middle partition is provided with gas through holes 10 arranged along the left and right directions, a horizontally arranged bottom plate 17 is fixed in the upper right cavity, a gas path distribution circuit control board is provided on the bottom plate 17, a wiring hole 11 is also provided on the bottom plate 17, a threading notch 12 is provided on the upper partition 8, and a cover plate 13 is sealed on the upper shell 1; The gas distribution circuit control board includes a main control MCU, which integrates a power module, a CAN module, a self-test module, a watchdog module, a flow acquisition module, an air volume calculation module, and an air volume control module. The power filter 7 is connected to the power module through the threading gap 12, and the air flow sensor is connected to the main control MCU through the wiring hole 11. The main control MCU communicates with the host computer through the CAN module; the self-test module is used to check whether multiple gas flow sensors 4, centrifugal fans 6 and CAN modules are working properly; the watchdog module ensures the normal operation of the main control NCU through a preset timer; the flow acquisition module is used to read the air flow sensor data, namely the absolute pressure Pa, temperature ta and differential pressure △p between the two pressure holes of the gas in the gas pipeline; the air volume calculation module calculates the air volume according to the data collected by the flow acquisition module using the following formula The air volume control module adjusts the speed of the centrifugal fan 6 according to the air volume calculated by the air volume calculation module through the motor control module, so that the actual air volume is controlled within the range of 5.7 to 6.6 m³ / h.

[0023] When in use, the air inlet port 5 is connected to the air inlet duct, and the air guide port 3 is connected to the mask. When working, after the power is turned on, the air path distribution device immediately activates the built-in self-test module to ensure the normal operation of the device. If an abnormality is found during the self-test process, the alarm mechanism is immediately triggered and reported to the host computer for processing. If the self-test is successfully completed, the device enters the normal working mode, the flow acquisition module begins to collect data, and then the air volume calculation module converts the collected data into air volume. Finally, the air volume calculation module judges the actual air volume. If the air volume is not within the range of 5.7 to 6.6 m³ / h, that is, it does not meet the required air volume standard, the speed of the centrifugal fan 6 needs to be controlled to make additional adjustments to the air volume. If the required air volume standard has been met, the speed of the centrifugal fan 6 is kept unchanged. If the air volume exceeds 6.6 m³ / h, the speed of the centrifugal fan 6 needs to be reduced.

[0024] In specific implementation, each air guide pipe opening 3 is provided with a manual valve 14 at the end outside the lower shell 2, so as to facilitate timely closing or opening as needed.

[0025] During specific implementation, there are four air guide pipe openings 3 and four gas flow meters, and the structure is specific and standardized.

[0026] In specific implementation, the centrifugal fan 6 is located at the rear of the left cavity, and the power filter 7 is located at the front of the left cavity, and the structure is specific and standardized.

[0027] In specific implementation, the gas through hole 10 is provided on the lower partition plate 9, and the structure is specific and standardized.

[0028] During specific implementation, four two-color LED indicator lights 15 are respectively provided at the positions corresponding to the upper shell 1 and the four air duct openings 3. Under normal working conditions, when the air volume calculated by the air volume calculation module is not within the range of 5.7-6.6 m³ / h, the main control MCU controls the corresponding two-color LED indicator light 15 to display red, and at the same time, the main control MCU issues an air volume alarm message. When the air volume calculated by the air volume calculation module is within the range of 5.7-6.6 m³ / h, the main control MCU controls the corresponding two-color LED indicator light 15 to display green; in standby mode, the corresponding two-color LED indicator light 15 is off.

[0029] During specific implementation, the centrifugal fan 6 is a boost blower.

[0030] In specific implementation, a start-stop button 16 is also provided on the upper shell 1. When the device is working normally, the main control MCU will receive the feedback signal of the centrifugal fan 6. If there is a feedback value, it is in the start state. At this time, if the start-stop button 16 is pressed, the device stops working. If there is no feedback value, it is in the stop state. At this time, press the start-stop button 16 and the device starts working.

[0031] The above description is merely a specific embodiment of the present invention, which enables those skilled in the art to understand or implement the present invention. Although detailed descriptions have been made with reference to the aforementioned embodiments, those skilled in the art should understand that they may still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents; and such modifications or replacements do not deviate from the essence of the corresponding technical solutions within the scope of the technical solutions of the embodiments, and they should all be included in the scope of protection of the claims.

Claims

1. An intelligent monitoring and control gas distribution device, characterized in that: The invention comprises a barrel-shaped lower shell (2) and a cylindrical upper shell (1), wherein a lower partition (9) is provided in the lower shell (2) so that the space inside the lower shell (2) is divided into a lower left cavity and a lower right cavity, and a plurality of air guide pipe openings (3) are provided at the front side wall of the lower right cavity, and each air guide pipe opening (3) is provided with a gas flow sensor (4) at the end thereof located in the lower right cavity; an upper partition (8) is provided in the upper shell (1) so that the space inside the upper shell (1) is divided into an upper left cavity and an upper right cavity, the upper shell (1) is adapted to the lower shell (2) and the upper shell (1) is sealed and pressed above the lower shell (2), the upper left cavity and the lower left cavity are communicated to form a left cavity, and the upper partition (8) and the lower partition (9) are connected. ) are flush to form a middle partition, an air inlet (5) is provided on the left side wall of the lower left cavity, a power filter (7) and a centrifugal fan (6) arranged in the left and right directions are provided in the left cavity, the right end of the centrifugal fan (6) is fixed to the left side of the middle partition, the air inlet of the centrifugal fan (6) is connected to the air inlet (5) correspondingly, the middle partition is provided with gas through holes (10) arranged in the left and right directions, a horizontally arranged bottom plate (17) is fixed in the upper right cavity, a gas path distribution circuit control board is provided on the bottom plate (17), a wiring hole (11) is also provided on the bottom plate (17), a wire threading notch (12) is provided on the upper partition (8), and a cover plate (13) is sealed on the upper shell (1); The gas distribution circuit control board includes a main control MCU, which is integrated with a power module, a CAN module, a self-test module, a watchdog module, a flow acquisition module, an air volume calculation module, and an air volume control module. The power filter (7) is connected to the power module through a threading notch (12), and the air flow sensor is connected to the main control MCU through a wiring hole (11). The main control MCU communicates with the host computer through the CAN module; the self-test module is used to check whether multiple gas flow sensors (4), centrifugal fans (6) and CAN modules are working properly; the watchdog module ensures the normal operation of the main control NCU through a preset timer; the flow acquisition module is used to read the air flow sensor data, namely the absolute pressure Pa, temperature ta and differential pressure △p between two pressure holes of the gas in the gas pipeline; the air volume calculation module calculates the air volume according to the data collected by the flow acquisition module using the following formula The air volume control module adjusts and controls the rotation speed of the centrifugal fan (6) through the motor control module according to the air volume calculated by the air volume calculation module, so that the actual air volume is controlled within the range of 5.7 to 6.6 m³ / h.

2. The intelligent monitoring and control gas distribution device according to claim 1, characterized in that: The end of each air guide pipe opening (3) located outside the lower shell (2) is equipped with a manual valve (14).

3. The intelligent monitoring and control gas distribution device according to claim 2, characterized in that: There are four air guide pipe openings (3) and four gas flow meters.

4. The intelligent monitoring and control gas distribution device according to claim 3, characterized in that: The centrifugal fan (6) is located at the rear of the left cavity, and the power filter (7) is located at the front of the left cavity.

5. The intelligent monitoring and control gas distribution device according to claim 4, characterized in that: The gas through hole (10) is provided on the lower partition (9).

6. The intelligent monitoring and control gas distribution device according to claim 5, characterized in that: Four two-color LED indicator lights (15) are respectively provided at positions corresponding to the four air duct openings (3) of the upper shell (1). Under normal working conditions, when the air volume calculated by the air volume calculation module is not within the range of 5.7-6.6 m³ / h, the main control MCU controls the corresponding two-color LED indicator lights (15) to display red, and at the same time, the main control MCU issues an air volume alarm message. When the air volume calculated by the air volume calculation module is within the range of 5.7-6.6 m³ / h, the main control MCU controls the corresponding two-color LED indicator lights (15) to display green. In the standby state, the corresponding two-color LED indicator lights (15) are not lit.

7. The intelligent monitoring and control gas distribution device according to claim 6, characterized in that: The centrifugal fan (6) is a booster blower.

8. The intelligent monitoring and control gas distribution device according to claim 7, characterized in that: A start / stop button (16) is also provided on the upper housing (1). When the device is operating normally, the main control MCU receives a feedback signal from the centrifugal fan (6). If there is a feedback value, it is in the start state. At this time, if the start / stop button (16) is pressed, the device stops working. If there is no feedback value, it is in the stop state. At this time, if the start / stop button (16) is pressed, the device starts working.

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