Laboratory ventilation system

Abstract

The utility model relates to the technical field of ventilation systems, and discloses a laboratory ventilation system which comprises a first exhaust pipeline, a first valve, a second exhaust pipeline, a second valve, a VOC sensor and a control module. The first exhaust pipeline communicated with the outside is communicated with the first indoor valve. And a second exhaust pipeline communicated with the outside is communicated with a second indoor valve. And the control module is in communication connection with the VOC sensor, the first valve and the second valve. When an experiment is carried out on the experiment operation table, gases of some volatile compounds are dispersed in the air at the experiment operation table. If the compound is an inorganic substance, the control module controls the first valve to be opened and controls the second valve to be closed, and if the compound is an organic substance, the control module controls the second valve to be opened and controls the first valve to be closed. Therefore, the damage to the first exhaust pipeline or the second exhaust pipeline caused by the contact reaction of the organic compound and the inorganic compound is avoided.

Description

Technical Field

[0001] The present application relates to the technical field of ventilation systems, and in particular to a laboratory ventilation system. Background Art

[0002] The laboratory is a place for scientific research, experiments, testing and teaching. There are multiple experimental workbenches arranged indoors. When conducting experiments on the experimental workbenches, it is inevitable that some volatile compounds will be dispersed in the air at the experimental workbenches.

[0003] In order to discharge the gas mixed with compounds, an exhaust duct is often set at the experimental operation table to discharge the gas mixed with compounds to the outside. However, the compound may be an organic compound or an inorganic compound. An exhaust duct is often set in the existing laboratory, and various compounds are discharged through the exhaust duct. There may be a situation where organic compounds and inorganic compounds come into contact, which is easy to react and cause damage to the exhaust duct, resulting in leakage. Utility Model Content

[0004] In view of this, the present application provides a laboratory ventilation system to solve the problem that air mixed with organic compounds and air mixed with inorganic compounds are easily reacted and damaged when discharged through an exhaust duct.

[0005] In a first aspect, the present application provides a laboratory ventilation system, comprising:

[0006] The first exhaust duct is connected to the outside;

[0007] a first valve, arranged indoors and connected to the first exhaust duct;

[0008] The second exhaust duct is connected to the outside;

[0009] a second valve, arranged indoors and connected to the second exhaust duct;

[0010] VOC sensors, suitable for detecting the types and concentrations of compounds in indoor air;

[0011] A control module is respectively connected to the VOC sensor, the first valve and the second valve for communication. The control module is suitable for controlling the first valve to open and the second valve to close when determining that the compound is an inorganic substance. The control module is also suitable for controlling the first valve to close and the second valve to open when determining that the compound is an organic substance.

[0012] Optionally, a first fan is provided on the first exhaust duct, and a second fan is provided on the second exhaust duct. The control module is communicatively connected with the first fan and the second fan respectively. The control module is also suitable for controlling the first fan to turn on when it is determined that the compound is an inorganic substance, and the control module is also suitable for controlling the second fan to turn on when it is determined that the compound is an organic substance.

[0013] Optionally, it also includes:

[0014] The waste gas treatment equipment is arranged outdoors and is suitable for purifying air. The first exhaust duct and the second exhaust duct are respectively connected to the waste gas treatment equipment.

[0015] Optionally, it also includes:

[0016] The fresh air fan is connected to the indoor and outdoor areas respectively. The fresh air fan is suitable for discharging the indoor air to the outdoor area. The fresh air fan is also suitable for discharging the outdoor air into the indoor area after purifying, heating or cooling the outdoor air.

[0017] Optionally, it also includes:

[0018] The temperature sensor is suitable for detecting the indoor temperature. The control module is communicated with the temperature sensor and the fresh air fan respectively. The control module is suitable for controlling the fresh air fan to purify and heat the outdoor air and discharge it into the room and discharge the indoor air to the outside when it is determined that the indoor temperature is lower than a first preset temperature; and / or, the control module is suitable for controlling the fresh air fan to purify and cool the outdoor air and discharge it into the room and discharge the indoor air to the outside when it is determined that the indoor temperature is higher than a second preset temperature.

[0019] Optionally, it also includes:

[0020] The humidity sensor is suitable for detecting indoor humidity. The control module is respectively communicated with the humidity sensor and the fresh air fan. The control module is suitable for controlling the fresh air fan to purify the outdoor air and discharge it into the room and discharge the indoor air to the outside when it determines that the indoor humidity is higher than a first preset humidity or lower than a second preset humidity.

[0021] Optionally, it also includes:

[0022] The oxygen sensor is arranged indoors and is suitable for detecting the indoor oxygen concentration. The oxygen sensor is communicatively connected with the control module. The control module is suitable for controlling the fresh air fan to purify the outdoor air and discharge it into the room and discharge the indoor air to the outside when it is determined that the indoor oxygen concentration is lower than the preset oxygen concentration.

[0023] Optionally, it also includes:

[0024] A first wind speed sensor is disposed on the first exhaust duct and is suitable for detecting the wind speed in the first exhaust duct, and the control module is in communication connection with the first wind speed sensor;

[0025] The second wind speed sensor is arranged on the second exhaust air duct and is suitable for detecting the wind speed in the second exhaust air duct. The control module is in communication connection with the second wind speed sensor.

[0026] Optionally, it also includes:

[0027] The noise sensor is arranged indoors and is suitable for detecting indoor noise. The noise sensor is communicatively connected with the control module.

[0028] Optionally, it also includes:

[0029] The alarm component is adapted to execute the alarm action. The alarm component is in communication connection with the control module. The control module is also adapted to control the alarm component to execute the alarm action when it is determined that the concentration of the compound exceeds a preset concentration.

[0030] The present application provides a laboratory ventilation system, comprising: a first exhaust duct, a first valve, a second exhaust duct, a second valve, a VOC sensor and a control module. The first exhaust duct and the second exhaust duct are respectively connected to the outside of the laboratory, and the first valve and the second valve are both arranged in the laboratory and are respectively connected to the first exhaust duct and the second exhaust duct. The control module is respectively connected to the VOC sensor, the first valve and the second valve. The first valve and the second valve are solenoid valves. The first valve, the second valve and the VOC sensor are arranged at the experimental operation table. When the experiment is carried out on the experimental operation table, the gas of some volatile compounds is dispersed in the air at the experimental operation table. If the compound is an inorganic substance, the control module controls the first valve to open and the second valve to close. If the compound is an organic substance, the control module controls the second valve to open and the first valve to close. Such a setting prevents air mixed with organic compounds from entering the first exhaust duct, and also prevents air mixed with inorganic compounds from entering the second exhaust duct. Thereby avoiding the contact and reaction of organic compounds and inorganic compounds to cause damage to the first exhaust duct or the second exhaust duct. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the related technologies, the drawings required for use in the specific implementation methods or the related technical descriptions will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0032] Figure 1A schematic diagram of the structure of a laboratory ventilation system according to an embodiment of the present application;

[0033] Figure 2 This is a schematic diagram of the communication connection of a control module of a laboratory ventilation system according to an embodiment of the present application.

[0034] Description of reference numerals:

[0035] 1. The first exhaust duct; 2. The first valve; 3. The second exhaust duct; 4. The second valve; 5. The VOC sensor; 6. The control module; 7. The first fan; 8. The second fan; 9. The exhaust gas treatment equipment; 10. The first wind speed sensor; 11. The second wind speed sensor; 12. The temperature sensor; 13. The humidity sensor; 14. The oxygen sensor; 15. The noise sensor; 16. The alarm component. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of this application.

[0037] Combine the following Figure 1 to Figure 2 , describing an embodiment of the present application.

[0038] According to an embodiment of the present application, on the one hand, a laboratory ventilation system is provided, including: a first exhaust duct 1, a first valve 2, a second exhaust duct 3, a second valve 4, a VOC sensor 5 and a control module 6.

[0039] The first exhaust duct 1 and the second exhaust duct 3 are respectively connected to the outside of the laboratory, and the first valve 2 and the second valve 4 are both arranged in the laboratory and are respectively connected to the first exhaust duct 1 and the second exhaust duct 3. Thus, the indoor air can be discharged to the outside through the first exhaust duct 1 by opening the first valve 2, and the indoor air can be discharged to the outside through the second exhaust duct 3 by opening the second valve 4.

[0040] The VOC sensor 5 is a sensor for detecting volatile organic compounds (VOCs). It can detect the type and concentration of the compound. That is, when detecting the compound, the concentration of the compound is detected while the organic or inorganic compound is detected. The VOC sensor 5 can be installed indoors to detect the type and concentration of the compound in the indoor air. The control module 6 is connected to the VOC sensor 5, the first valve 2 and the second valve 4 for communication. The first valve 2 and the second valve 4 are electromagnetic valves.

[0041] Specifically, the first valve 2, the second valve 4 and the VOC sensor 5 are arranged at the experimental operation table. The VOC sensor 5 detects the type and concentration of the compounds in the air at the experimental operation table in real time. When conducting experiments on the experimental operation table, it is inevitable that some volatile compound gases are dispersed in the air at the experimental operation table.

[0042] If the compound is an inorganic substance, the VOC sensor 5 detects the type of the compound and sends a signal to the control module 6. At this time, the control module 6 determines that the compound is an inorganic substance, that is, controls the first valve 2 to open and controls the second valve 4 to close, so that the air mixed with the compound can enter the first exhaust duct 1 for discharge but cannot enter the second exhaust duct 3. When the compound is not contained in the air or the concentration is lower than a certain value, the control module 6 controls the first valve 2 to close.

[0043] If the compound is an organic substance, the VOC sensor 5 detects the type of the compound and sends a signal to the control module 6. At this time, the control module 6 determines that the compound is an organic substance, that is, controls the second valve 4 to open and controls the first valve 2 to close, so that the air mixed with the compound can enter the second exhaust duct 3 for discharge but cannot enter the first exhaust duct 1. When the compound is not contained in the air or the concentration is lower than a certain value, the control module 6 controls the second valve 4 to close.

[0044] This arrangement prevents air mixed with organic compounds from entering the first exhaust duct 1, and prevents air mixed with inorganic compounds from entering the second exhaust duct 3. This prevents organic compounds and inorganic compounds from contacting and reacting with each other, thereby preventing the first exhaust duct 1 or the second exhaust duct 3 from being damaged.

[0045] It is worth noting that a plurality of experimental operation tables may be arranged in the laboratory, each of which is provided with a first valve 2 and a second valve 4 . Different experimental operation tables may conduct different experiments and produce different organic compounds.

[0046] In a further embodiment, a first fan 7 is provided on the first exhaust duct 1, and the first fan 7 can be started to exhaust air outward through the first exhaust duct 1. A second fan 8 is provided on the second exhaust duct 3, and the second fan 8 can be started to exhaust air outward through the second exhaust duct 3. The control module 6 is communicatively connected to the first fan 7 and the second fan 8 respectively.

[0047] When the control module 6 determines that the compound is an inorganic compound, the first valve 2 is controlled to open and the second valve 4 is controlled to close, and the first fan 7 is controlled to start, and the first fan 7 sucks the air containing the inorganic compound through the first valve 2 to the first exhaust pipe 1 for discharge. When the compound is no longer contained in the air or the concentration is lower than a certain value, the control module 6 controls the first fan 7 to stop and then controls the first valve 2 to close.

[0048] When the control module 6 determines that the compound is an organic compound, the second valve 4 is controlled to open and the first valve 2 is controlled to close, and the second fan 8 is controlled to start, and the second fan 8 sucks the air containing the organic compound through the second valve 4 to the second exhaust pipe 3 for discharge. When the air does not contain the compound or the concentration is lower than a certain value, the control module 6 controls the second fan 8 to stop and then controls the second valve 4 to close.

[0049] Such an arrangement facilitates the control of the exhaust speeds of the first exhaust duct 1 and the second exhaust duct 3 .

[0050] In some embodiments, the laboratory ventilation system further includes: waste gas treatment equipment 9. The waste gas treatment equipment 9 can be an activated carbon adsorption tower, a catalytic burner, a thermal burner, etc. The waste gas treatment equipment 9 is set outdoors, and the first exhaust duct 1 and the second exhaust duct 3 are connected to the waste gas treatment equipment 9 respectively. In this way, the gas discharged from the first exhaust duct 1 or the second exhaust duct 3 is first purified by the waste gas treatment equipment 9 and then discharged into the air to prevent the waste gas from polluting the environment.

[0051] In an optional embodiment, the laboratory ventilation system further includes: a first wind speed sensor 10 and a second wind speed sensor 11. The first wind speed sensor 10 is arranged on the first exhaust air duct 1, and the second wind speed sensor 11 is arranged on the second exhaust air duct 3. The control module 6 is communicatively connected to the first wind speed sensor 10 and the second wind speed sensor 11 respectively. After the first wind speed sensor 10 detects the wind speed in the first exhaust air duct 1, it sends a signal to the control module 6; after the second wind speed sensor 11 detects the wind speed in the second exhaust air duct 3, it sends a signal to the control module 6. The control module 6 can be communicatively connected to the display terminal, so that the display terminal displays the wind speed in the first exhaust air duct 1 and the wind speed in the second exhaust air duct 3 in real time. The control module 6 can control the first fan 7 and the second fan 8 according to the wind speed in the first exhaust air duct 1 and the wind speed in the second exhaust air duct 3.

[0052] In some embodiments, the laboratory ventilation system also includes: a fresh air fan. A fresh air fan is a device that introduces fresh air from the outside, filters it, purifies it, and then sends it into the room. It is equipped with a heat exchanger that can recover the heat energy discharged from the indoor air and use it to heat or cool the fresh air entering the room, thereby reducing energy consumption. It is also equipped with a dehumidification mechanism and a humidification mechanism that can dehumidify and humidify the air sent into the room. By connecting the fresh air fan to the indoor and outdoor areas, the indoor air can be changed according to demand so that the indoor air meets the required standards.

[0053] In a further embodiment, the laboratory ventilation system further includes: a temperature sensor 12. The temperature sensor 12 is disposed in the laboratory and is capable of detecting the indoor temperature. The control module 6 is communicatively connected to the temperature sensor 12. The temperature sensor 12 detects the indoor temperature in real time and sends a signal to the control module 6, and the control module 6 determines the value of the indoor temperature through the signal sent by the temperature sensor 12.

[0054] When the control module 6 determines that the indoor temperature is lower than the first preset temperature, the control module 6 controls the fresh air fan to start, and the fresh air fan purifies and heats the outdoor air and discharges it into the room, while discharging the indoor air to the outside, so that the indoor temperature rises to a specified value.

[0055] When the control module 6 determines that the indoor temperature is higher than the second preset temperature, the control module 6 controls the fresh air fan to start, and the fresh air fan purifies and cools the outdoor air before discharging it into the room, and at the same time discharges the indoor air to the outside, so that the indoor temperature is reduced to a specified value.

[0056] With this setting, the indoor temperature can be adjusted in real time so that the indoor temperature is always within the appropriate temperature range.

[0057] In another further embodiment, the laboratory ventilation system further includes: a humidity sensor 13. The humidity sensor 13 is arranged in the laboratory and can detect the indoor humidity. The control module 6 is communicatively connected with the humidity sensor 13. The humidity sensor 13 detects the indoor humidity in real time and sends a signal to the control module 6, and the control module 6 determines the value of the indoor humidity through the signal sent by the humidity sensor 13.

[0058] When the control module 6 determines that the indoor humidity is higher than the first preset humidity, the control module 6 controls the fresh air fan to start, and the fresh air fan purifies and dehumidifies the outdoor air and discharges it into the room, while discharging the indoor air outdoors, so as to reduce the indoor humidity to a specified value.

[0059] When the control module 6 determines that the indoor humidity is lower than the second preset temperature, the control module 6 controls the fresh air blower to start, and the fresh air blower purifies and humidifies the outdoor air and discharges it into the room, and discharges the indoor air to the outside, so that the indoor humidity is increased to the specified value.

[0060] With this setting, the indoor humidity can be adjusted in real time so that the indoor humidity is always within the appropriate temperature range.

[0061] In yet another further embodiment, the laboratory ventilation system further comprises: an oxygen sensor 14. The oxygen sensor 14 is disposed in the laboratory and is capable of detecting the indoor oxygen concentration. The control module 6 is communicatively connected with the oxygen sensor 14. The oxygen sensor 14 detects the indoor oxygen concentration in real time and sends a signal to the control module 6, and the control module 6 determines the indoor oxygen concentration through the signal sent by the oxygen sensor 14.

[0062] When the control module 6 determines that the indoor oxygen concentration is lower than the preset concentration, the control module 6 controls the fresh air fan to start, and the fresh air fan purifies the outdoor air and discharges it into the room, while discharging the indoor air to the outside, so that the indoor oxygen concentration increases to the specified value.

[0063] In some embodiments, the laboratory ventilation system further includes: a noise sensor 15. The noise sensor 15 is arranged indoors, and the noise sensor 15 is communicatively connected to the control module 6. The noise sensor 15 detects the noise in the room and sends a signal to the control module 6, so as to obtain the indoor noise value. The control module 6 can be connected to a display terminal, and the control module 6 controls the display terminal to display the indoor noise value in real time.

[0064] In some embodiments, the laboratory ventilation system further includes: an alarm component 16. The alarm component 16 is arranged indoors, and the alarm component 16 is connected to the control module 6 for communication. When the control module 6 determines that the concentration of the compound in the room exceeds the preset concentration, the control module 6 controls the alarm component 16 to perform a warning action, so that personnel can timely grasp the information that the concentration of the compound exceeds the preset concentration. The alarm component 16 can be an alarm light or an alarm bell, and its warning action is to light up or sound.

[0065] Although the embodiments of the present application are described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present application, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A laboratory ventilation system, characterized in that: include: A first exhaust duct (1) is connected to the outside; A first valve (2), arranged indoors and connected to the first exhaust pipe (1); The second exhaust duct (3) is connected to the outside; A second valve (4), arranged indoors and connected to the second exhaust pipe (3); A VOC sensor (5) suitable for detecting the type and concentration of compounds in indoor air; A control module (6) is respectively connected to the VOC sensor (5), the first valve (2) and the second valve (4) for communication. The control module (6) is adapted to control the first valve (2) to open and the second valve (4) to close when the compound is determined to be an inorganic substance. The control module (6) is also adapted to control the first valve (2) to close and the second valve (4) to open when the compound is determined to be an organic substance.

2. The laboratory ventilation system according to claim 1, characterized in that: The first exhaust duct (1) is provided with a first fan (7), the second exhaust duct (3) is provided with a second fan (8), the control module (6) is respectively connected to the first fan (7) and the second fan (8), the control module (6) is further adapted to control the first fan (7) to be turned on when it is determined that the compound is an inorganic substance, and the control module (6) is further adapted to control the second fan (8) to be turned on when it is determined that the compound is an organic substance.

3. The laboratory ventilation system according to claim 1, characterized in that: Also includes: The waste gas treatment device (9) is arranged outdoors and is suitable for purifying air. The first exhaust pipe (1) and the second exhaust pipe (3) are respectively connected to the waste gas treatment device (9).

4. The laboratory ventilation system according to claim 1, characterized in that: Also includes: The fresh air fan is connected to the indoor and outdoor areas respectively. The fresh air fan is suitable for discharging the indoor air to the outdoor area. The fresh air fan is also suitable for discharging the outdoor air into the indoor area after purification, heating or cooling.

5. The laboratory ventilation system according to claim 4, characterized in that: Also includes: The temperature sensor (12) is adapted to detect the indoor temperature. The control module (6) is respectively connected to the temperature sensor (12) and the fresh air fan for communication. The control module (6) is adapted to control the fresh air fan to purify and heat the outdoor air and discharge it into the room and discharge the indoor air to the outside when the indoor temperature is lower than a first preset temperature; and / or, the control module (6) is adapted to control the fresh air fan to purify and cool the outdoor air and discharge it into the room and discharge the indoor air to the outside when the indoor temperature is higher than a second preset temperature.

6. The laboratory ventilation system according to claim 4, characterized in that: Also includes: The humidity sensor (13) is adapted to detect indoor humidity. The control module (6) is respectively connected to the humidity sensor (13) and the fresh air blower for communication. The control module (6) is adapted to control the fresh air blower to purify outdoor air and discharge it into the room, and to discharge indoor air to the outside, when determining that the indoor humidity is higher than a first preset humidity or lower than a second preset humidity.

7. The laboratory ventilation system according to claim 4, characterized in that: Also includes: An oxygen sensor (14) is arranged indoors and is suitable for detecting indoor oxygen concentration. The oxygen sensor (14) is in communication connection with the control module (6). The control module (6) is suitable for controlling the fresh air fan to purify outdoor air and discharge it indoors, and to discharge indoor air outdoors when it is determined that the indoor oxygen concentration is lower than a preset oxygen concentration.

8. The laboratory ventilation system according to claim 2, characterized in that: Also includes: a first wind speed sensor (10), arranged on the first exhaust duct (1) and adapted to detect the wind speed in the first exhaust duct (1), the control module (6) being communicatively connected to the first wind speed sensor (10); The second wind speed sensor (11) is arranged on the second exhaust duct (3) and is suitable for detecting the wind speed in the second exhaust duct (3), and the control module (6) is communicatively connected with the second wind speed sensor (11).

9. The laboratory ventilation system according to claim 1, characterized in that: Also includes: A noise sensor (15) is arranged indoors and is suitable for detecting indoor noise. The noise sensor (15) is communicatively connected with the control module (6).

10. The laboratory ventilation system according to claim 1, characterized in that: Also includes: An alarm component (16) is adapted to execute an alarm action. The alarm component (16) is in communication connection with the control module (6). The control module (6) is further adapted to control the alarm component (16) to execute the alarm action when it is determined that the concentration of the compound exceeds a preset concentration.

Images