Common laboratory ventilation system

Abstract

A common laboratory ventilation system comprises an air volume difference controller, an exhaust device and an air inlet device, the exhaust device and the air inlet device are matched with the air volume difference controller, a flexible air inlet pipeline is arranged between a hard pipe body of an air inlet pipe of the air inlet device and an air outlet cover, and a swing device used for driving the air outlet cover to swing is further arranged between the hard pipe body of the air inlet pipe and the air outlet cover. According to the laboratory ventilation system, the air volume difference controller automatically controls the air inlet device and the air exhaust device in a linkage mode, the air outlet cover of the air inlet device is designed to be in a swinging type, through accurate control of the air volume difference controller, fresh air can be accurately, rapidly and evenly supplemented while harmful gas is exhausted, and the ventilation effect is good. Therefore, it is ensured that the air in the laboratory always has a clean, sanitary and comfortable air environment, and prominent practicability is achieved.

Description

Technical Field

[0001] The utility model relates to a common laboratory ventilation system and belongs to the technical field of laboratory ventilation equipment. Background Art

[0002] Existing laboratory ventilation equipment, as shown in the Chinese utility model patent "Authorization Announcement Number: CN208704097U; Authorization Announcement Date: April 5, 2019; Name: An Energy-Saving Air Supply and Exhaust Device for Purification Laboratories", provides a laboratory air supply and exhaust device including an exhaust device and an air supply device. The laboratory air supply and exhaust device can not only exhaust the harmful gas in the laboratory in time by coordinating the use of the exhaust device and the air supply device, but also replenish fresh air in the laboratory while exhausting the harmful gas. Although the device solves the defects of low air pressure in the laboratory after the traditional exhaust device discharges the harmful gas, it does not limit the installation method of the air intake hood of the air intake device. The traditional air intake hood is generally fixed. The fixed air intake method has the defect that the air outlet is fixed, and the fresh air cannot be quickly dispersed in the laboratory. Utility Model Content

[0003] The purpose of the utility model is to provide a common laboratory ventilation system in view of the above-mentioned defects of the existing laboratory ventilation system. The laboratory ventilation system can be controlled by the air volume difference controller to control the air intake device and the exhaust device, and can also be manually controlled by inputting instructions on the indoor control panel. The ventilation system can not only accurately and quickly replenish fresh air while exhausting harmful gases, ensuring that the air in the laboratory always has a clean, hygienic and comfortable air environment, but also has the advantages of rich usage and convenient operation. In addition, the air outlet hood of the air intake device in the ventilation system is swingable. On the one hand, the swingable air outlet hood can evenly replenish fresh air into the room, avoiding the situation that harmful gases in the laboratory stay in dead corners for a long time and cannot be discharged in time. On the other hand, the swingable air outlet hood can adjust and fix the outlet angle of fresh air according to actual conditions, ensuring that indoor personnel are in a comfortable and healthy air environment, and has outstanding practicality.

[0004] The above technical objectives of the utility model are achieved through the following technical solutions:

[0005] A common laboratory ventilation system includes an air volume difference controller and an exhaust device and an air intake device equipped with the air volume difference controller. A flexible air intake duct is arranged between the hard tube body of the air intake pipe of the air intake device and the air outlet hood. A swing device for driving the air outlet hood to swing is also arranged between the hard tube body of the air intake pipe and the air outlet hood.

[0006] By adopting the above technical solution, a common laboratory ventilation system is provided. The laboratory ventilation system is controlled by the air volume difference controller to automatically link the air intake device and the exhaust device, and the air outlet hood of the air intake device is designed to be swingable. Through the precise control of the air volume difference controller, while exhausting harmful gases, fresh air can be accurately, quickly and evenly supplemented to ensure that the air in the laboratory always has a clean, hygienic and comfortable air environment, which has outstanding practicality.

[0007] The utility model is further configured as follows: the swing device includes a base with a rotating shaft fixed on the hard tube body of the intake pipe and a connecting plate fixed on the air outlet cover and fixed to the rotating shaft, a swing gear is fixed on the rotating shaft, a driving cylinder is fixed on the hard tube body, and a rack meshing with the swing gear is fixed on the telescopic rod of the driving cylinder.

[0008] The utility model is further configured as follows: a guide rod frame is further provided on the telescopic rod for the rack, the guide rod frame and the rack are parallel to each other, and when the tooth surface of the rack is meshed with the swing gear, the guide rod frame smoothly fits on the rotating shaft and is located on both sides of the rotating shaft respectively with the rack.

[0009] The utility model is further configured as follows: a swing gear is respectively arranged at both ends of the rotating shaft, and the swing gear and the rack and guide rod frame matched with the swing gear are all located outside the hard tube body.

[0010] By adopting the above technical solution, a specific swing device is provided, which can adjust the angle of the gas outlet hood, so that the intake air can be quickly and evenly dispersed in the laboratory, and the safety of the gas in various places in the laboratory can be effectively guaranteed. In addition, in the swing device, the arrangement of the rack and the guide rod frame effectively improves the stability of the swing drive, and the rack and the guide rod frame are arranged on both sides of the intake pipe body, which effectively avoids the situation where the rack and the guide rod body interfere with the intake pipe.

[0011] The utility model is further configured as follows: a heat exchanger for performing heat exchange between the intake air and the exhaust gas is arranged between the intake pipe of the intake device and the exhaust pipe of the exhaust device.

[0012] By adopting the above technical solution, a heat exchanger is arranged between the air intake pipe and the exhaust pipe, so that the intake air and the exhaust air can fully exchange heat, thereby reducing the temperature difference between the intake air and the indoor gas, which can ensure that the indoor air temperature is within a relatively suitable range to a certain extent, and can effectively ensure the comfort of indoor people.

[0013] The utility model is further configured as follows: the exhaust device comprises an exhaust pipe and a plurality of fume hoods, the plurality of fume hoods are connected in parallel to the exhaust pipe through respective exhaust branch pipes, and the fume hoods are also connected to the air volume difference controller.

[0014] The utility model is further configured as follows: an air intake pipe of the air intake device and an exhaust pipe of the exhaust device are both provided with a variable air volume Venturi valve connected to an air volume difference controller.

[0015] By adopting the above technical solution, the exhaust device and the air intake device are defined respectively.

[0016] The utility model is further configured as follows: the air volume difference controller is also equipped with an indoor control panel.

[0017] By adopting the above technical solution, the staff can manually adjust the inlet and outlet air volume, whether the exhaust hood swings, and the swing angle through the indoor control panel. This solution enables the ventilation system to have a manual adjustment function, enriches the use of the ventilation system, greatly improves the convenience and comfort of use, and can effectively ensure the physical and mental health of personnel in the laboratory.

[0018] The utility model is further configured as follows: the air volume difference controller is also equipped with an indoor pressure sensor.

[0019] By adopting the above technical solution, the air volume difference controller controls the linkage between the exhaust device and the air intake device through the data provided by the indoor pressure sensor, so as to avoid excessive or insufficient pressure in the laboratory and keep the indoor pressure within a comfortable range while ensuring safety.

[0020] The utility model is further configured as follows: the air volume difference controller is also equipped with external and internal pressure sensors.

[0021] By adopting the above technical solution, the air volume difference controller controls the linkage between the air intake device and the exhaust device by comparing the outdoor pressure sensor with the indoor pressure sensor, thereby avoiding the situation where the pressure difference between the inside and outside of the laboratory is too large.

[0022] The main beneficial effects of the utility model are:

[0023] 1. This new laboratory ventilation system uses an air volume difference controller to automatically control the air intake device and the exhaust device, and the air outlet hood of the air intake device is designed to be swingable. Through the precise control of the air volume difference controller, while exhausting harmful gases, fresh air can be accurately, quickly and evenly supplemented to ensure that the air in the laboratory always has a clean, sanitary and comfortable air environment, which has outstanding practicality;

[0024] 2. The swing device of this new laboratory ventilation system can adjust the angle of the air outlet hood, allowing the incoming air to spread quickly and evenly in the laboratory, which can effectively ensure the safety of the gas in various places in the laboratory;

[0025] 3. This new laboratory ventilation system is equipped with a heat exchanger between the air intake pipe and the exhaust pipe, which allows the air intake and the air outlet to fully exchange heat, thereby reducing the temperature difference between the air intake and the indoor gas, and can ensure that the indoor air temperature is within a relatively suitable range to a certain extent, which can effectively ensure the comfort of indoor personnel;

[0026] 4. This new laboratory ventilation system is also equipped with an indoor control panel for the air volume difference controller. When in use, the staff can manually adjust the inlet and outlet air volume, whether the air outlet hood swings, and the swing angle through the indoor control panel. This solution enables the ventilation system to have a manual adjustment function, enriches the use of the ventilation system, can greatly improve the convenience and comfort of use, and can effectively ensure the physical and mental health of the personnel in the laboratory;

[0027] 5. This new laboratory ventilation system is equipped with an indoor pressure sensor and an outdoor pressure sensor for the air volume difference controller. Through the air pressure data collected by the indoor and outdoor sensors, the air volume difference controller can accurately control the air pressure in the laboratory by linkage control of the air intake device and the exhaust device, and can effectively ensure that the pressure in the laboratory is always within a comfortable and safe range. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0029] Figure 1 It is a schematic diagram of the entire utility model;

[0030] Figure 2 It is a structural schematic diagram of the swing device in the utility model;

[0031] Figure 3 yes Figure 2 Enlarged view of point A in the middle.

[0032] In the figure, 1. air volume difference controller; 2. indoor control panel; 3. fume hood; 4. exhaust pipe; 5. air inlet pipe; 51. hard pipe body; 6. swing device; 61. air outlet hood; 62. flexible air inlet duct; 63. connecting plate; 64. base; 65. rotating shaft; 66. driving cylinder; 67. swing gear; 68. rack; 69. guide rod frame; 7. variable air volume venturi valve; 8. heat exchanger. DETAILED DESCRIPTION

[0033] The technical solution of the utility model will be described clearly and completely below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] Embodiment 1:

[0035] like Figures 1 to 3 As shown, a common laboratory ventilation system includes an air volume difference controller 1 and an exhaust device and an air intake device equipped with the air volume difference controller 1. The air volume difference controller 1 is also equipped with an indoor control panel 2. The air volume difference controller 1 is also equipped with an indoor pressure sensor. The air volume difference controller 1 is also equipped with an external and internal pressure sensor. The exhaust device includes an exhaust pipe 4 and a plurality of fume hoods 3. The plurality of fume hoods 3 are connected in parallel to the exhaust pipe 4 through their respective exhaust branches. The fume hoods 3 are also connected to the air volume difference controller 1. A heat exchanger 8 for heat exchange between the intake and exhaust gases is provided between the intake pipe 5 of the intake device and the exhaust pipe 4 of the exhaust device. Both the intake pipe 5 of the intake device and the exhaust pipe 4 of the exhaust device are provided with a variable air volume venturi valve connected to the air volume difference controller 1.

[0036] A flexible air intake duct 62 is provided between the hard tube body 51 of the air intake pipe 5 and the air outlet cover 61 of the air intake device, and a swing device 6 for driving the air outlet cover 61 to swing is also provided between the hard tube body 51 of the air intake pipe 5 and the air outlet cover 61. The swing device includes a base 64 with a rotating shaft 65 fixed on the hard tube body 51 of the air intake pipe 5 and a connecting plate 63 fixed on the air outlet cover 61 and fixed to the rotating shaft 65, a swing gear 67 is fixed on the rotating shaft 65, a driving cylinder 66 is fixed on the hard tube body 51, and a rack 68 meshing with the swing gear 67 is fixed on the telescopic rod of the driving cylinder 66. A guide rod frame 69 is also provided on the telescopic rod for the rack 68, and the guide rod frame 69 and the rack 68 are parallel to each other. When the tooth surface of the rack 68 meshes with the swing gear 67, the guide rod frame 69 smoothly fits on the rotating shaft 65 and is located on both sides of the rotating shaft 65 with the rack 68. A swing gear 67 is respectively disposed at both ends of the rotating shaft 65 . The swing gear 67 , the rack 68 and the guide rod frame 69 configured with the swing gear 67 are all located outside the hard tube body 51 .

[0037] How it works:

[0038] The air intake device and the exhaust device are coordinated and controlled directly through the air volume difference controller 1 or by manually inputting instructions on the indoor control panel 2 to achieve the replacement of air inside and outside the laboratory and the control of indoor air pressure to ensure the air quality in the laboratory and the appropriateness of the indoor air pressure.

[0039] The outlet angle of the air outlet hood 61 can be adjusted by extending and retracting the drive cylinder 66. The extension and retraction of the drive cylinder 66 can be directly controlled by the air volume difference controller 1, or manually input instructions on the indoor control panel 2 and then controlled by the air volume difference controller 1.

Claims

1. A common laboratory ventilation system, characterized in that: The invention comprises an air volume difference controller (1) and an exhaust device and an air intake device which are arranged with the air volume difference controller (1); a flexible air intake duct (62) is arranged between a hard pipe body (51) of an air intake pipe (5) of the air intake device and an air outlet hood (61); and a swing device (6) for driving the air outlet hood (61) to swing is also arranged between the hard pipe body of the air intake pipe (5) and the air outlet hood (61).

2. A common laboratory ventilation system according to claim 1, characterized in that: The swing device comprises a base (64) with a rotating shaft (65) fixed on a hard tube body (51) of an air inlet pipe (5), and a connecting plate (63) fixed on an air outlet cover (61) and fixed to the rotating shaft (65); a swing gear (67) is fixed on the rotating shaft (65); a driving cylinder (66) is fixed on the hard tube body (51); and a rack (68) meshing with the swing gear (67) is fixed on the telescopic rod of the driving cylinder (66).

3. A common laboratory ventilation system according to claim 2, characterized in that: A guide rod frame (69) is also provided on the telescopic rod for the rack (68). The guide rod frame (69) and the rack (68) are parallel to each other. When the tooth surface of the rack (68) is meshed with the swing gear (67), the guide rod frame (69) is smoothly fitted on the rotating shaft (65) and is respectively located on both sides of the rotating shaft (65) with the rack (68).

4. A common laboratory ventilation system according to claim 3, characterized in that: A swing gear (67) is respectively disposed at both ends of the rotating shaft (65), and the swing gear (67) and the rack (68) and the guide rod frame (69) configured with the swing gear (67) are all located outside the hard tube body (51).

5. A common laboratory ventilation system according to claim 1, characterized in that: A heat exchanger (8) for performing heat exchange between intake air and exhaust gas is arranged between the intake pipe (5) of the intake device and the exhaust pipe (4) of the exhaust device.

6. A common laboratory ventilation system according to claim 1, characterized in that: The exhaust device comprises an exhaust pipe (4) and a plurality of fume hoods (3). The plurality of fume hoods (3) are connected in parallel to the exhaust pipe (4) via respective exhaust branch pipes. The fume hoods (3) are also connected to the air volume difference controller (1).

7. A common laboratory ventilation system according to claim 6, characterized in that: The air intake pipe (5) of the air intake device and the exhaust pipe (4) of the exhaust device are both provided with a variable air volume Venturi valve connected to the air volume difference controller (1).

8. A common laboratory ventilation system according to claim 7, characterized in that: The air volume difference controller (1) is also equipped with an indoor control panel (2).

9. A common laboratory ventilation system according to claim 8, characterized in that: The air volume difference controller (1) is also equipped with an indoor pressure sensor.

10. A common laboratory ventilation system according to claim 9, characterized in that: The air volume difference controller (1) is also equipped with external and internal pressure sensors.

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