Digital high-safety ventilation cabinet

Abstract

The utility model discloses a digitalized high-safety ventilation cabinet, which comprises a cabinet body and a monitoring module, the cabinet body is respectively provided with an experiment area and a storage area from top to bottom, the experiment area and the storage area are not communicated with each other, the front of the experiment area is provided with an operation port, the operation port is provided with a window capable of moving up and down, and the rear side of the cabinet body is provided with a window lifting mechanism; an air exhaust assembly communicated with the experiment area and an emergency air exhaust assembly communicated with the storage area are arranged above the cabinet body; the monitoring module comprises a wireless communication module, and a first gas sensor, a second gas sensor, a third gas sensor and a human body infrared sensor which are electrically connected with the wireless communication module. According to the utility model, toxic gas leaked from the storage area is automatically detected and exhausted through the independent emergency exhaust assembly, so that the safety is improved; and meanwhile, the concentration of the toxic gas, whether the toxic gas overflows or not, whether an experimenter performs an experiment or not and the like can be remotely detected, controlled and recorded on line, so that intelligent monitoring is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of laboratories, in particular to a digital high-safety fume hood. Background Art

[0002] In the prior art, the storage area under the fume hood stores some dangerous and toxic substances used for experiments. When dangerous and toxic substances leak, they cannot be effectively monitored and quickly discharged, which easily endangers the health and safety of the experimenters and poses a safety hazard.

[0003] In addition, the existing fume hoods only have simple exhaust functions and cannot conduct online monitoring, recording and control of the concentration of toxic gases exhausted during experiments, whether toxic gases are leaking, whether there are experimenters conducting experiments, etc. It is impossible to remotely and intuitively understand the use and operation of the fume hoods, and cannot meet the needs of the existing market.

[0004] Therefore, it is necessary to develop a digital high-safety fume hood that can automatically detect and discharge toxic gases leaking from the storage area through independent emergency exhaust components to improve safety; at the same time, it can remotely detect, control and record the concentration of toxic gases, whether there is toxic gas leakage, whether there are experimenters conducting experiments, etc., to achieve intelligent monitoring. Utility Model Content

[0005] In order to solve the above problems, the technical solutions adopted by the utility model are as follows:

[0006] A digital high-safety fume hood, comprising a cabinet body, characterized in that the cabinet body is provided with a laboratory area and a storage area which are not connected to each other from top to bottom, an operation port is provided in front of the laboratory area, a window which can be moved up and down is provided on the operation port, and a window lifting mechanism for driving the window to move up and down is provided on the rear side of the cabinet body;

[0007] An exhaust assembly connected to the experimental area and an emergency exhaust assembly connected to the storage area are arranged above the cabinet, and the exhaust assembly and the emergency exhaust assembly are used to discharge toxic gases out of the laboratory;

[0008] Also included is a monitoring module electrically connected to the window lifting mechanism, the exhaust assembly and the emergency exhaust assembly;

[0009] The monitoring module includes a wireless communication module, and a first gas sensor, a second gas sensor, a third gas sensor and a human infrared sensor electrically connected to the wireless communication module, wherein the first gas sensor is arranged in a storage area, the second gas sensor is arranged in an experimental area, the third gas sensor is arranged on the outside of a cabinet, and the human infrared sensor is arranged above an operating port.

[0010] Preferably, the emergency exhaust assembly includes an emergency exhaust duct, an emergency exhaust box, and an emergency exhaust air volume control valve, one end of the emergency exhaust duct is connected to the storage area, and the other end is connected to the air inlet of the emergency exhaust box, the emergency exhaust box is arranged above the cabinet, and the emergency exhaust air volume control valve is arranged on the exhaust port of the emergency exhaust box;

[0011] The emergency exhaust air volume control valve and the emergency exhaust box are electrically connected to the first gas sensor.

[0012] Preferably, installation chambers are provided on both sides between the cabinet and the experimental area, and the emergency exhaust duct includes a side emergency exhaust duct and an upper emergency exhaust duct, the side emergency exhaust duct is provided in the left and / or right installation chambers, and the upper emergency exhaust duct is located at the top of the cabinet;

[0013] An emergency exhaust vent is provided at a position corresponding to the storage area and the installation chamber. One end of the side emergency exhaust duct is connected to the emergency exhaust vent, and the other end is connected to the upper emergency exhaust duct. The air outlet of the upper emergency exhaust duct is connected to the air inlet of the emergency exhaust box.

[0014] Preferably, the exhaust assembly includes an exhaust box and an exhaust air volume control valve, an exhaust port is provided above the experimental area, an air inlet of the exhaust box is connected to the exhaust port, and the exhaust air volume control valve is arranged on the exhaust port of the exhaust box;

[0015] The exhaust air volume control valve is electrically connected to the second gas sensor.

[0016] Preferably, the monitoring module further comprises a wind speed sensor disposed on one side of the operation port, and the wind speed sensor is used to monitor the surface wind speed;

[0017] The wind speed sensor is electrically connected to the exhaust air volume control valve of the exhaust assembly.

[0018] Preferably, a touch panel electrically connected to the window lifting mechanism, the exhaust assembly, the emergency exhaust assembly and the monitoring module is provided on one side of the operating port.

[0019] Preferably, the monitoring module also includes an alarm electrically connected to the first gas sensor, the second gas sensor, and the third gas sensor.

[0020] Preferably, the alarm is one or a combination of an audible alarm and / or a visual alarm.

[0021] Preferably, the window lifting mechanism comprises a guide wheel set, a rope, a counterweight and a rope winder;

[0022] The guide wheel group is arranged on the top of the cabinet; the counterweight is located at the back of the fume hood body and is connected to the cabinet body by sliding up and down through a guide rail pair; the rope winder is located below the counterweight and is fixedly connected to the cabinet body; one end of the rope is fixedly connected to the top of the window, and the other end is fixedly connected to the counterweight after passing through the guide wheel group; the rope winder and the counterweight are connected by rope winding;

[0023] The rope winding device is electrically connected to the human body infrared sensor.

[0024] Compared with the prior art, the beneficial effects of the present invention are:

[0025] 1. The utility model automatically detects and discharges toxic gases leaking from the storage area through an independent emergency exhaust assembly, thereby ensuring the health and safety of the experimenters and improving safety.

[0026] 2. The side emergency exhaust duct is built into the installation chamber on both sides between the cabinet and the experimental area, which makes better use of the space and improves the integrity and aesthetics of the fume hood.

[0027] 3. Through the setting of the monitoring module, the concentration of toxic gases, whether there is toxic gas leakage, whether there are experimenters conducting experiments, etc. can be detected, controlled and recorded remotely online to achieve intelligent monitoring. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0029] Figure 2 This is the front view of the utility model;

[0030] Figure 3 for Figure 2 Schematic diagram of the AA section structure;

[0031] Figure 4 It is a top view of the utility model;

[0032] Figure 5 for Figure 4 Schematic diagram of the structure of the middle BB section;

[0033] Among them: cabinet 1, window 2, window lifting mechanism 3, exhaust assembly 4, emergency exhaust assembly 5, monitoring module 6, touch panel 7, experimental area 10, storage area 20, installation chamber 30, guide wheel group 31, rope 32, counterweight hammer 33, rope winder 34, exhaust box 41, exhaust air volume control valve 42, emergency exhaust duct 51, emergency exhaust box 52, emergency exhaust air volume control valve 53, wireless communication module 61, first gas sensor 62, second gas sensor 63, third gas sensor 64, human infrared sensor 65, wind speed sensor 66, alarm 67, operation port 101, exhaust port 102, emergency exhaust port 201, side emergency exhaust duct 511, upper emergency exhaust duct 512. DETAILED DESCRIPTION

[0034] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively with reference to the accompanying drawings. The accompanying drawings provide preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0035] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may also be an element centered thereon. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an element centered thereon at the same time. The terms "vertical", "horizontal", "left", "right", "up", "down", "front", "rear" and similar expressions used herein are for illustrative purposes only.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0037] Below, in conjunction with the accompanying drawings and specific implementation methods, the utility model is further described:

[0038] like Figure 1-5 As shown, a digital high-safety fume hood comprises a cabinet body 1, wherein the cabinet body 1 is provided with an experimental area 10 and a storage area 20 which are not connected to each other from top to bottom, an operation port 101 is provided in front of the experimental area 10, a window 2 which can be moved up and down is provided on the operation port 101, and a window lifting mechanism 3 for driving the window 2 to move up and down is provided on the rear side of the cabinet body 1;

[0039] An exhaust assembly 4 connected to the experimental area 10 and an emergency exhaust assembly 5 connected to the storage area 20 are arranged above the cabinet 1. The exhaust assembly 4 and the emergency exhaust assembly 5 are used to discharge toxic gases out of the laboratory.

[0040] It also includes a monitoring module 6 electrically connected to the window lifting mechanism 3, the exhaust assembly 4 and the emergency exhaust assembly 5;

[0041] The monitoring module 6 includes a wireless communication module 61, and a first gas sensor 62, a second gas sensor 63, a third gas sensor 64 and a human infrared sensor 65 electrically connected to the wireless communication module 61, wherein the first gas sensor 62 is arranged in the storage area 20, the second gas sensor 63 is arranged in the experimental area 10, the third gas sensor 64 is arranged on the outside of the cabinet 1, and the human infrared sensor 65 is arranged above the operating port 101.

[0042] In this embodiment, the first gas sensor 62 is used to monitor whether there is a toxic gas leak in the storage area 20. When a toxic gas leak is detected, the emergency exhaust assembly 5 is controlled to start quickly exhausting the toxic gas, thereby ensuring the health and safety of the experimenters and greatly improving safety.

[0043] In this embodiment, the second gas sensor 63 is used to detect the concentration of toxic gases in the experimental area 10, and control the exhaust volume of the exhaust component 4 and the opening height of the window 2 according to the concentration of toxic gases generated during the experiment, to ensure that toxic gases overflow and are quickly discharged from the test area, thereby improving safety.

[0044] In this embodiment, the third gas sensor 64 is used to monitor whether there is toxic gas in the area outside the cabinet 1, and when there is toxic gas, the safety of the laboratory environment is ensured.

[0045] In this embodiment, when the human infrared sensor 65 senses that the window 2 changes from being occupied to being occupied, the window lifting mechanism 3 is automatically controlled to drive the window 2 forward to a safe height; when it changes from being occupied to being unoccupied, the window lifting mechanism 3 is automatically controlled to drive the window 2 backward to a set minimum height, thereby creating effective isolation and ensuring safety.

[0046] In this embodiment, through the wireless communication module 61, the information monitored by the first gas sensor 62, the second gas sensor 63, the third gas sensor 64 and the human infrared sensor 65 can be fed back to the cloud platform or the mobile user terminal in the form of electrical signals to form data storage, and the operation of the fume hood can be monitored on the cloud platform or the mobile user terminal, as well as the window lifting mechanism 3, the exhaust component 4 and the emergency exhaust component 5 to achieve remote online control.

[0047] In the above structure, the toxic gas leaked from the storage area 20 is automatically detected and discharged through the independent emergency exhaust assembly 5, thereby improving safety; at the same time, the concentration of the toxic gas, whether there is toxic gas overflow, whether there are experimenters conducting experiments, etc. can be detected, controlled and recorded remotely online to achieve intelligent monitoring.

[0048] Further, such as Figure 3 , 5 As shown, the emergency exhaust assembly 5 includes an emergency exhaust duct 51, an emergency exhaust box 52, and an emergency exhaust air volume control valve 53. One end of the emergency exhaust duct 51 is connected to the storage area 20, and the other end is connected to the air inlet of the emergency exhaust box 52. The emergency exhaust box 52 is arranged above the cabinet 1, and the emergency exhaust air volume control valve 53 is arranged on the exhaust port 102 of the emergency exhaust box 52;

[0049] The emergency exhaust air volume control valve 53 and the emergency exhaust box 52 are electrically connected to the first gas sensor 62 .

[0050] In this embodiment, a fan is disposed in the emergency exhaust air box 52, and the emergency exhaust air volume control valve 53 is composed of a variable air volume valve and an air valve actuator.

[0051] In this embodiment, when the first gas sensor 62 detects leakage of harmful and toxic gases in the storage area 20, the emergency exhaust air volume control valve 53 is controlled to open, so that the fan of the emergency exhaust box 52 rotates at high speed to discharge the harmful and toxic gases in the storage area 20, thereby realizing the monitoring and rapid discharge of the harmful and toxic gases leaking from the storage area 20, and ensuring the health and safety of the experimenters.

[0052] In this embodiment, an independent emergency exhaust box 52 is connected to the storage area 20 through an emergency exhaust duct 51. When toxic gas leaks and needs to be discharged, it will not affect the emission control of toxic gas in the experimental area 10, greatly improving reliability and safety.

[0053] Further, such as Figure 3 , 5 As shown, in order to better utilize the space and improve the integrity and aesthetics of the fume hood, the emergency exhaust duct 51 is hidden in the cabinet 1, and installation chambers 30 are provided on both sides between the cabinet 1 and the experimental area 10. The emergency exhaust duct 51 includes a side emergency exhaust duct 511 and an upper emergency exhaust duct 512. The side emergency exhaust duct 511 is provided in the installation chamber 30 on the left and / or right side, and the upper emergency exhaust duct 512 is located at the top of the cabinet 1;

[0054] An emergency exhaust port 201 is provided at a position corresponding to the storage area 20 and the installation chamber 30 . One end of the side emergency exhaust duct 511 is connected to the emergency exhaust port 201 , and the other end is connected to the upper emergency exhaust duct 512 . The air outlet of the upper emergency exhaust duct 512 is connected to the air inlet of the emergency exhaust box 52 .

[0055] Further, such as Figure 1 , 3 As shown, the exhaust assembly 4 includes an exhaust box 41 and an exhaust air volume control valve 42. An exhaust port 102 is provided above the experimental area 10. The air inlet of the exhaust box 41 is connected to the exhaust port 102. The exhaust air volume control valve 42 is arranged on the exhaust port 102 of the exhaust box 41.

[0056] The exhaust air volume control valve 42 is electrically connected to the second gas sensor 63 .

[0057] In this embodiment, a fan is disposed in the exhaust box 41, and the exhaust air volume control valve 42 is composed of a variable air volume valve and an air valve actuator.

[0058] In this embodiment, the concentration of toxic gas during the experiment is monitored by the second gas sensor 63 to control the rotation of the fan of the exhaust box 41 and the opening of the exhaust air volume control valve 42. The greater the concentration of the toxic gas, the greater the fan speed of the exhaust box 41 and the opening of the exhaust air volume control valve 42. Conversely, the fan speed of the exhaust box 41 decreases and the opening of the exhaust air volume control valve 42 decreases, thereby energy-saving and controllable exhaust of toxic gases.

[0059] Further, such as Figure 1 , 2 As shown in FIG. 3 , the monitoring module 6 further includes a wind speed sensor 66 disposed on one side of the operation port 101 , and the wind speed sensor 66 is used to monitor the surface wind speed;

[0060] The wind speed sensor 66 is electrically connected to the exhaust air volume control valve 42 of the exhaust assembly 4 .

[0061] In this embodiment, a wind speed sensor 66 is provided to monitor the surface wind speed of the operating port 10140 in real time, and the opening of the exhaust air volume control valve 42 is controlled to ensure that the surface wind speed changes between 0.3 and 0.8 m / s, thereby further preventing the overflow of toxic gases and improving safety.

[0062] Further, such as Figure 1 , 2 As shown, in order to facilitate the experimenter to centrally operate and control the various functions of the fume hood, a touch panel 7 electrically connected to the window lifting mechanism 3, the exhaust component 4, the emergency exhaust component 5 and the monitoring module 6 is provided on one side of the operation port 101.

[0063] Further, such as Figure 1 , 2 As shown, in order to improve safety and intuitively remind or warn experimenters that there is a toxic gas leak in the storage area 20, the toxic gas concentration in the experimental area 10 is too high, or there is toxic gas in the laboratory environment, the monitoring module 6 also includes an alarm 67 electrically connected to the first gas sensor 62, the second gas sensor 63, and the third gas sensor 64.

[0064] Furthermore, the alarm 67 is one or a combination of an auditory alarm 67 and / or a visual alarm 67 .

[0065] Further, such as Figure 3 As shown, the window lifting mechanism 3 includes a guide wheel group 31, a rope 32, a counterweight 33 and a rope winder 34; the guide wheel group 31 is arranged at the top of the cabinet 1; the counterweight 33 is located on the back of the fume hood body, and is connected to the cabinet 1 for sliding up and down through a guide rail pair, the rope winder 34 is located below the counterweight 33, and is fixedly connected to the cabinet 1, one end of the rope 32 is fixedly connected to the top of the window 2, and the other end is fixedly connected to the counterweight 33 after passing around the guide wheel group 31; the rope winder 34 and the counterweight 33 are connected by rope winding, and the rope winder 34 is electrically connected to the human infrared sensor 65.

[0066] In this embodiment, when the human infrared sensor 65 senses that the window 2 changes from being occupied to being occupied, it automatically controls the rope to rotate forward and pulls the counterweight 33 to move downward relative to the cabinet 1, so that the window 2 rises to a safe height; on the contrary, when the window 2 changes from being occupied to being unoccupied, the rope winder 34 rotates in the opposite direction until the window 2 drops to the set minimum height, thereby realizing automatic control of the opening or closing of the window 2 when there is someone or no one.

[0067] In this embodiment, the window lifting mechanism 3 adopts a rear-mounted structure. Compared with the prior art, the space on both sides of the fume hood can be saved to facilitate the installation of the emergency exhaust duct 51.

[0068] For those skilled in the art, various other corresponding changes and deformations can be made according to the technical solutions and concepts described above, and all of these changes and deformations should fall within the scope of protection of the claims of the utility model patent.

Claims

1. A digital high-safety fume hood, comprising a cabinet body, characterized in that: The cabinet is provided with an experimental area and a storage area which are not connected to each other from top to bottom, an operation port is provided in front of the experimental area, a window which can be moved up and down is provided on the operation port, and a window lifting mechanism which drives the window to move up and down is provided on the rear side of the cabinet; An exhaust assembly connected to the experimental area and an emergency exhaust assembly connected to the storage area are arranged above the cabinet, and the exhaust assembly and the emergency exhaust assembly are used to discharge toxic gases out of the laboratory; Also included is a monitoring module electrically connected to the window lifting mechanism, the exhaust assembly and the emergency exhaust assembly; The monitoring module includes a wireless communication module, and a first gas sensor, a second gas sensor, a third gas sensor and a human infrared sensor electrically connected to the wireless communication module, wherein the first gas sensor is arranged in a storage area, the second gas sensor is arranged in an experimental area, the third gas sensor is arranged on the outside of a cabinet, and the human infrared sensor is arranged above an operating port.

2. A digital high-safety fume hood according to claim 1, characterized in that: The emergency exhaust assembly includes an emergency exhaust duct, an emergency exhaust box, and an emergency exhaust air volume control valve. One end of the emergency exhaust duct is connected to the storage area, and the other end is connected to the air inlet of the emergency exhaust box. The emergency exhaust box is arranged above the cabinet, and the emergency exhaust air volume control valve is arranged on the exhaust port of the emergency exhaust box. The emergency exhaust air volume control valve and the emergency exhaust box are electrically connected to the first gas sensor.

3. A digital high-safety fume hood according to claim 2, characterized in that: Installation chambers are arranged on both sides between the cabinet and the experimental area, and the emergency exhaust duct includes a side emergency exhaust duct and an upper emergency exhaust duct, the side emergency exhaust duct is arranged in the left and / or right installation chambers, and the upper emergency exhaust duct is located at the top of the cabinet; An emergency exhaust vent is provided at a position corresponding to the storage area and the installation chamber. One end of the side emergency exhaust duct is connected to the emergency exhaust vent, and the other end is connected to the upper emergency exhaust duct. The air outlet of the upper emergency exhaust duct is connected to the air inlet of the emergency exhaust box.

4. A digital high-safety fume hood according to claim 1, characterized in that: The exhaust assembly includes an exhaust box and an exhaust air volume control valve. An exhaust port is provided above the experimental area. The air inlet of the exhaust box is connected to the exhaust port. The exhaust air volume control valve is arranged on the exhaust port of the exhaust box. The exhaust air volume control valve is electrically connected to the second gas sensor.

5. A digital high-safety fume hood according to claim 1, characterized in that: The monitoring module further comprises a wind speed sensor disposed on one side of the operation port, and the wind speed sensor is used to monitor the surface wind speed; The wind speed sensor is electrically connected to the exhaust air volume control valve of the exhaust assembly.

6. A digital high-safety fume hood according to claim 1, characterized in that: A touch panel electrically connected to the window lifting mechanism, the exhaust assembly, the emergency exhaust assembly and the monitoring module is arranged on one side of the operation port.

7. A digital high-safety fume hood according to claim 1, characterized in that: The monitoring module also includes an alarm electrically connected to the first gas sensor, the second gas sensor, and the third gas sensor.

8. A digital high-safety fume hood according to claim 7, characterized in that: The alarm is one or a combination of an audible alarm and / or a visual alarm.

9. A digital high-safety fume hood according to claim 1, characterized in that: The window lifting mechanism comprises a guide wheel group, a rope, a counterweight and a rope winder; The guide wheel group is arranged on the top of the cabinet; the counterweight is located at the back of the fume hood body and is connected to the cabinet body by sliding up and down through a guide rail pair; the rope winder is located below the counterweight and is fixedly connected to the cabinet body; one end of the rope is fixedly connected to the top of the window, and the other end is fixedly connected to the counterweight after passing through the guide wheel group; the rope winder and the counterweight are connected by rope winding; The rope winding device is electrically connected to the human body infrared sensor.

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