Pneumatic control device of clean room door

Abstract

A pneumatic control device of a clean room door comprises a clean room, a door frame fixed on a wall of the clean room, a door leaf connected to the door frame, a suspended ceiling layer connected to the top of the wall, an air conditioner pipeline arranged in a space above the suspended ceiling layer, a sealed cabin arranged on the door frame, a piston arranged in the sealed cabin and dividing the sealed cabin into a door opening cabin and a door closing cabin. The piston fixes a piston rod, and the outer end of the piston rod extends from the sealed cabin to the outside. Compared with the prior art, the utility model has the technical effects that the air pipe is arranged, and the piston is pushed to move by utilizing the air pressure of the air supply pipeline of the purification air-conditioning system, so that the door is controlled to be closed, and the energy is saved.

Description

Technical Field

[0001] This utility model belongs to the field of cleanroom technology, specifically relating to a pneumatic control device for a cleanroom door. Background Technology

[0002] A cleanroom is a controlled environment that removes contaminants such as particles, harmful gases, and bacteria from a specific space and controls parameters such as temperature, humidity, pressure, airflow speed, and static electricity within the required range. It is mainly used to ensure the cleanliness requirements of precision manufacturing and scientific experiments.

[0003] Currently, most cleanroom doors are manual doors, which are quite laborious to close and open.

[0004] The inventors noted that there are already technologies in the prior art that use cylinders to control the opening and closing of doors, such as the patent document entitled "An Electro-pneumatic Double-Opening Sliding Door System" with publication number CN218454658U.

[0005] The inventors also noted that installing cylinders on the cleanroom doors and using air pumps for control would undoubtedly increase costs and consume electricity. Utility Model Content

[0006] The technical problem this invention aims to solve is: how to design a pneumatic control device for cleanroom doors to reduce energy consumption.

[0007] The specific technical solution of this utility model is as follows:

[0008] A pneumatic control device for a cleanroom door includes a cleanroom, a door frame fixed to the wall of the cleanroom, a door leaf connected to the door frame, a suspended ceiling connected to the top of the wall, an air conditioning duct in the space above the suspended ceiling, a sealing chamber on the door frame, a piston inside the sealing chamber, the piston dividing the sealing chamber into an opening chamber and a closing chamber, a piston rod fixed to the piston, and the outer end of the piston rod extending from inside the sealing chamber to the outside.

[0009] The opening and closing compartments are each connected to the air conditioning duct via a vent pipe. Each vent pipe is equipped with a solenoid valve A. The two solenoid valves A are electrically connected to the controller via wires, and the controller is electrically connected to the button via wires.

[0010] Both the opening and closing compartments are equipped with an air outlet, and each air outlet is equipped with a solenoid valve B. The two solenoid valves B are electrically connected to the controller via wires.

[0011] The button is located on the wall to the side of the door frame.

[0012] Compared with the prior art, the technical effect of this utility model is that it is equipped with a vent pipe, and uses the air pressure of the air supply pipe of the purified air conditioning system to drive the piston movement, thereby realizing the control of opening and closing the door and saving energy. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the utility model in use.

[0014] Figure 2 This is a schematic diagram of the present invention. Detailed Implementation

[0015] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0016] like Figure 1-2 A pneumatic control device for a cleanroom door includes a cleanroom, a door frame 11 fixed on a wall 10 of the cleanroom, a door leaf 12 connected to the door frame 11, a ceiling 13 of the cleanroom connected to the top of the wall 10, and an air conditioning duct 20 (that is, the air supply duct of the central cleanroom air conditioning system) provided in the space above the ceiling 13.

[0017] A sealed chamber 40 is provided on the door frame 11. A piston is provided inside the sealed chamber 40. The piston divides the sealed chamber 40 into an opening chamber 41 and a closing chamber 42. The piston fixes the piston rod 43. The outer end of the piston rod 43 extends from inside the sealed chamber 40 to the outside.

[0018] The opening compartment 41 and the closing compartment 42 are respectively connected to the air conditioning duct 20 through a vent pipe 31. Each vent pipe 31 is equipped with a solenoid valve A32. The two solenoid valves A32 are electrically connected to the controller 60 through a wire 61. The controller 60 is electrically connected to the button 63 through a wire 61.

[0019] Both the opening compartment 41 and the closing compartment 42 are equipped with an air outlet (not shown in the figure), and the air outlet is equipped with a solenoid valve B (not shown in the figure). The two solenoid valves B are electrically connected to the controller 60 through the wire 61.

[0020] For ease of operation, button 63 is located on the wall 10 to the side of the door frame 11.

[0021] Its working principle is as follows:

[0022] S1 Installation: The outer end of the piston rod 43 is connected to one end of the connecting crank 50, and one end of the connecting crank 50 is connected to the door leaf fixing module 51. The door leaf fixing module 51 is fixed on the door leaf 12.

[0023] S2. Opening the door: Press the door opening button 63. The controller 60 controls the following: Solenoid valve B on the opening compartment 41 closes, and solenoid valve A32 opens; solenoid valve B on the closing compartment 42 opens, and solenoid valve A32 closes. Air from the air conditioning duct 20 enters the opening compartment 41 through the vent pipe 31, gradually increasing the air pressure inside the opening compartment 41 (while air in the closing compartment 42 is continuously discharged, and its pressure remains relatively constant). This pushes the piston to move continuously towards the closing compartment 42, and the piston rod 43 moves synchronously, which, through the linkage crank 50, pushes the door 12 to open.

[0024] S2. Opening the door: Press the closing button 63. The controller 60 controls the following: Solenoid valve B on the closing compartment 42 closes and solenoid valve A32 opens; solenoid valve B on the opening compartment 41 opens and solenoid valve A32 closes. Air from the air conditioning duct 20 enters the closing compartment 42 through the vent pipe 31, gradually increasing the air pressure inside the closing compartment 42 (while air in the opening compartment 41 is continuously discharged, and its pressure remains relatively constant). This pushes the piston to move continuously towards the opening compartment 41, and the piston rod 43 moves synchronously, which, through the linkage crank 50, pushes the door 12 to close.

[0025] Features of this application:

[0026] S1. Cleanrooms need to maintain a specific temperature, and central air conditioning systems and air supply ducts are essential equipment for cleanrooms. Therefore, this pneumatic control device uses the air pressure of the air supply duct (internal pressure is usually between 400Pa and 1000Pa) as the driving force of the piston to replace the cylinder and realize the control of opening and closing the door.

[0027] S2. This device can replace door closers (cleanrooms require door closers to be installed) and has automatic door opening and closing functions.

[0028] S3 can be a manual button installed in the middle of the adjacent wall, a foot-operated button installed at the top or bottom of the wall, or a sensor installed at the top of the door frame, as the source of the action command issued by the controller 60.

[0029] For other details, please refer to the existing technology.

[0030] The above description is only a preferred embodiment of the present utility model. It should be noted that those skilled in the art can make several changes and improvements without departing from the overall concept of the present utility model, and these should also be considered within the protection scope of the present utility model.

Claims

1. A pneumatic control device for a cleanroom door, comprising a cleanroom, a door frame (11) fixed to a wall (10) of the cleanroom, a door leaf (12) connected to the door frame (11), a ceiling panel (13) of the cleanroom connected to the top of the wall (10), and an air conditioning duct (20) provided in the space above the ceiling panel (13), characterized in that: A sealed chamber (40) is provided on the door frame (11). A piston is provided inside the sealed chamber (40). The piston divides the sealed chamber (40) into an opening chamber (41) and a closing chamber (42). The piston fixes the piston rod (43). The outer end of the piston rod (43) extends from inside the sealed chamber (40) to the outside. The opening compartment (41) and closing compartment (42) are connected to the air conditioning duct (20) through a vent pipe (31). Each vent pipe (31) is equipped with a solenoid valve A (32). The two solenoid valves A (32) are electrically connected to the controller (60) through wires (61). The controller (60) is electrically connected to the button (63) through wires (61). Both the opening compartment (41) and the closing compartment (42) are equipped with an air outlet, and the air outlet is equipped with a solenoid valve B. The two solenoid valves B are electrically connected to the controller (60) via a wire (61).

2. The pneumatic control device for a cleanroom door as described in claim 1, characterized in that: The button (63) is located on the wall (10) to the side of the door frame (11).

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