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Laboratory ventilated cabinet

A fume hood and laboratory technology, applied in the field of laboratory equipment, can solve the inconvenience; if people leave without closing the windows and doors in time, increase the air conditioning load in the laboratory, energy waste and other problems, to achieve humanized design, Improved safety and wide application range

Inactive Publication Date: 2009-09-23
李保标
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The opening and closing of the window door used by the experimenter is usually controlled manually. During the experiment, when the experimenter needs to open the window door, the switch of the window door must be manually opened, and then the window door can be opened, which is very inconvenient. ; If the person leaves without closing the window door in time, the window door will remain open until someone manually closes the window door
When the window door is not in use, if it is always open, it will increase the load on the air conditioner in the laboratory, resulting in energy waste

Method used

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  • Laboratory ventilated cabinet
  • Laboratory ventilated cabinet
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Such as figure 1 As shown, the laboratory fume hood includes a cabinet body 1, a window door 2 arranged on the front of the cabinet body 1, and a central controller 16 arranged on the cabinet body 1; An infrared detector 3 is arranged on the frame 21 of the window door 2, and the infrared detector 3 is electrically connected to the central controller 16, and the electrical signal output by the central controller 16 controls the driving mechanism of the window door 2 .

[0056] The window door 2 is a door leaf that can be slidably positioned in the frame 21; the window door 2 provided on the front of the cabinet body of the fume hood can be opened or opened according to whether the experimental operation requires manual operation or other requirements. Closed to ensure the accuracy of the experiment and the safety of the operator. The lower part of the cabinet body is provided with an operating table, and the air exhaust port is arranged on the top of the cabinet body and e...

Embodiment 2

[0060] Such as figure 2 As shown, on the basis of the first embodiment, the manual window door control button 4 includes a door opening button 41, a door closing button 42 and an emergency closing button 43. The door opening button 41 is used to manually open the window door 2 and the degree of opening of the window door 2 can be adjusted at any time. The door close button 41 is used to manually close the window door 2 and the degree of closing of the window door 2 can be adjusted at any time. The emergency close button 43 is pressed at any time in the normal working state and at any time in the emergency state, the window door 2 is immediately closed, and the air valve equipped with the fume hood is fully opened.

[0061] A further technical solution is that the driving mechanism of the window door 2 includes a synchronous transmission mechanism, and the synchronous transmission mechanism simultaneously drives the window door 2 to move in a balanced manner. The synchronous trans...

Embodiment 3

[0067] Such as Figure 4 As shown, on the basis of the second embodiment, the laboratory fume hood further includes a timer 10 arranged in the central controller 16, and the timer 10 is electrically signaled to the central controller 16. The time can be set by the timer 10, and the time setting process and the change of the time can be displayed on the display 9 so as to prompt the time for experiment. The timer 10 can also be used to set the time. At the end of the preset time, the central controller 16 controls the window door 2 to close or open, or to control the power supply to close or open, or to control the closing or opening of a damper, etc. .

[0068] Further technical solutions are, such as Figure 4 As shown, it also includes a timer control button 11 arranged on the outer surface of the cabinet 1, and the timer control button 11 is directly connected to the central controller 16 with electrical signals. The timing time of the timer 10 is set by the timer control button...

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PUM

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Abstract

The invention discloses a laboratory ventilated cabinet which comprises a cabinet body, a window door, a central control unit and an infra-red detector, wherein the window door is arranged on the front face of the cabinet body, the central control unit is arranged on the cabinet body, the infra-red detector is arranged on a frame of the window door positioned on the front surface of the cabinet body, electrical signals of the infra-red detector are connected to the central control unit, electrical signals output by the central control unit control a drive mechanism of the window door, the infra-red detector detects infra-red input signals, so that the window door can automatically start when persons approach and automatically close when persons leave. The invention has high intellectualization and is convenient to operation and suitable for various laboratory ventilated cabinets.

Description

Technical field [0001] The invention relates to a laboratory equipment, in particular to the improvement of a laboratory fume hood. Background technique [0002] The traditional laboratory fume hood mainly controls the poisonous and harmful gases to operate in the fume hood through the exhaust fan, and forcibly exhausts the poisonous and harmful gases outdoors to prevent and control the harmful gases from causing harm to the human body. The opening and closing of the window door used by the experimenter is usually manually controlled. During the experiment, it is often inconvenient that the experimenter needs to open the window door manually when opening the window door, and then the window door can be opened. ; If a person leaves without closing the window door in time, the window door remains open until someone manually closes the window door. When the window door is not in use, if it is kept open, it will increase the load of the air conditioner in the laboratory and cause ene...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01L1/00B08B15/00
Inventor 李保标陈绍枢黎文建
Owner 李保标
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