Purification system for nitrogen generating equipment and nitrogen generating equipment

Abstract

The present invention discloses a nitrogen production system of a nitrogen production device, comprising a blower, a dust reduction mechanism, an air duct, and a purification mechanism; the dust reduction mechanism comprises a dust reduction box, a water spray component, a receiving component, and a drive assembly; the blower is arranged on and connected to the dust reduction box, the water spray component is arranged in the dust reduction box, the receiving component is arranged in the dust reduction box so as to be liftable, the drive assembly is arranged on the dust reduction box, and the receiving component can descend and start the drive assembly after receiving water; the purification mechanism comprises a purification box, a purification component, and a cleaning component; the purification box is connected to the dust reduction box through the air duct, the purification component is arranged in the purification box, the cleaning component is slidably inserted into the purification box, the sliding of the cleaning component can scrub the purification component, and the drive mechanism can drive the cleaning component to move back and forth. The purification system and nitrogen production device of the above-mentioned nitrogen production device can avoid the problem of not cleaning the purification component for a long time due to reasons such as forgetfulness.

Description

Technical Field

[0001] The present invention belongs to the technical field of environmental protection, and in particular relates to a purification system for nitrogen generating equipment and nitrogen generating equipment. Background Art

[0002] Air pollution is a major environmental issue facing society today, and nitrogen oxides are a major contributor. Using nitrogen generators to produce high-purity nitrogen can reduce nitrogen oxide emissions from industrial processes. Nitrogen generators separate nitrogen from the atmosphere, reducing the amount of nitrogen oxides produced by reactions between nitrogen and other elements. This is crucial for improving air quality and reducing issues like smog.

[0003] A nitrogen generator is a device that uses air as raw material and uses physical methods to separate oxygen and nitrogen in it to obtain nitrogen. According to different classification methods, it can be divided into cryogenic air separation, molecular sieve air separation and membrane air separation. There are three types of nitrogen generators used in industry. At present, the most commonly used one is the three-tower nitrogen generator. During the use of the nitrogen generator, the inhaled external air is usually purified, so as to improve the purity of the nitrogen and reduce the impurity content.

[0004] Traditional purification methods mostly use filters or directly use large-scale purification equipment for purification. The former is too simple to purify only through filters, and the purification effect is still poor. The latter has a better purification effect, but the overall initial investment cost and later maintenance cost are high, it is difficult to fully popularize, and the purification effect is not thorough enough.

[0005] To address this issue, relevant practitioners have designed nitrogen generator purification devices, such as those described in CN215901212U. This device uses water spraying to reduce dust before passing the gas through a purification component within a filter box for purification. The device also uses a scraper to clean the filter screen and other components within the purification component at appropriate times. However, the condition of the purification components within the purification box is difficult to see from the outside. Operators can easily forget to clean the purification components or assume that another operator has already done so, leaving them uncleaned for an extended period of time. This can weaken the purification process. Summary of the Invention

[0006] In view of the deficiencies in the prior art, the object of the present invention is to provide a purification system and nitrogen generating equipment for nitrogen generating equipment, so as to solve the technical problem mentioned in the above background technology that the operator fails to clean the purification components for a long time.

[0007] To achieve the aforementioned object of the invention, the technical solutions adopted by the present invention include:

[0008] A purification system for nitrogen production equipment, comprising a fan, a dust reduction mechanism, an air guide pipe, and a purification mechanism;

[0009] The dust reduction mechanism includes a dust reduction box, a water spray component, a receiving component and a drive assembly; the fan is arranged on and connected to the dust reduction box, the water spray component is arranged in the dust reduction box, the receiving component is arranged in the dust reduction box in a liftable manner, and the drive assembly is arranged on the dust reduction box. The receiving component can descend and start the drive assembly after receiving water;

[0010] The purification mechanism includes a purification box, a purification component and a cleaning component; the purification box is connected to the dust reduction box through the air duct, the purification component is arranged in the purification box, and the cleaning component can be slidably passed through the purification box. The sliding of the cleaning component can scrub the purification component, and the driving assembly can drive the cleaning component to move back and forth.

[0011] Furthermore, a lower connecting component, a connecting component and a pushing member are also provided; the dust reduction box is provided with an opening on the ground, the lower connecting component is provided on the dust reduction box, the pushing member is slidably provided on the dust reduction box or the purification box, the connecting component is connected to the cleaning component, and the reciprocating sliding of the cleaning component can drive the pushing member to gradually slide toward the lower connecting component through the connecting component, and squeeze the lower connecting component, so that the lower connecting component passes through the dust reduction box and is connected to the inside of the receiving component.

[0012] Furthermore, the receiving component includes a receiving box, a telescopic rod, a support spring, a baffle and an elastic rope; the support spring is fixed in the dust reduction box and connected to the receiving box, one end of the telescopic rod is connected to the inner bottom surface of the dust reduction box, and the other end is connected to the receiving box; a water outlet is provided on the inner bottom surface of the receiving box, the baffle is rotatably provided in the receiving box, and can close the water outlet, and the baffle is connected to the inner bottom surface of the receiving box through the elastic rope.

[0013] Furthermore, the drive assembly includes a motor and a drive gear; the motor is arranged in the dust reduction box, the drive gear is coaxially fixed on the output shaft of the motor, and can drive the purification component to slide back and forth, and the switch of the motor is a touch switch and is arranged in the dust reduction box.

[0014] Furthermore, the cleaning component includes a driven shaft, a driven gear, a driving rod, a driven rod, a connecting rod and a cleaning assembly; the driven shaft is rotatably connected to the dust reduction box, the driven gear is coaxially fixed on the driven shaft and meshes with the driving gear; the driving rod is fixed on the driven shaft, one end of the driven rod is hinged to the driving stem, and the other end is hinged to the connecting rod, the connecting rod is connected to the cleaning component, the cleaning component can be slidably passed through the purification box, and the connecting assembly is provided on the connecting rod.

[0015] Furthermore, the cleaning component includes a cleaning connecting rod and a cleaning plate; the cleaning connecting rod is arranged on the connecting rod and passes through the purification box, and the cleaning plate is arranged on the cleaning connecting rod away from one end of the connecting rod.

[0016] Furthermore, the lower connecting assembly includes a lower water box, a sliding pipe, a cylinder and a sliding connecting rod; the lower water box is arranged on the bottom surface of the dust reduction box, the sliding pipe can be slidably passed through the lower water box and can be inserted into the receiving box; the cylinder is arranged on the dust reduction box and is connected to the sliding pipe through the sliding connecting rod.

[0017] Furthermore, the pushing member is provided with a plurality of ratchets, and the connecting assembly includes a driven plate, a driven connecting shaft, a pawl and a torsion spring; the driven plate is fixed on the connecting rod, the driven connecting shaft is provided on the driven plate, the pawl is rotatably provided on the driven connecting shaft, and is connected to the driven plate through the torsion spring.

[0018] A nitrogen generating device, using any one of the above-mentioned purification systems for the nitrogen generating device, comprises a nitrogen generator, wherein the air outlet of the nitrogen generator is connected to the fan.

[0019] Compared with the prior art, the advantages of the present invention include:

[0020] In this application, the liquid sprayed by the water spraying component collects in the receiving component. After a period of time, the gravity generated by the liquid in the receiving component drives the receiving component downward, thereby activating the drive component. The drive component drives the cleaning component to reciprocate, thereby cleaning the purification component. In other words, the system described in this application automatically triggers the cleaning of the purification component after a certain period of operation, thus avoiding the problem of not cleaning the purification component for a long time due to reasons such as forgetfulness. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in this application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 This is an overall schematic diagram of a purification system of a nitrogen production equipment in the present invention;

[0023] Figure 2 Schematic cross-section of the dust suppression mechanism and the lower connection components in the present invention;

[0024] Figure 3A schematic diagram of a purification system of a nitrogen production equipment according to the present invention from another angle;

[0025] Figure 4 It is a cross-sectional schematic diagram of the purification mechanism and cleaning components in the present invention.

[0026] Reference numerals:

[0027] Fan 10, dust reduction mechanism 20, dust reduction box 1, water spray component 2, receiving component 3, receiving box 31, telescopic rod 32, support spring 33, baffle 34, elastic rope 35, drive assembly 4, motor 41, drive gear 42, touch switch 43, air guide tube 30, purification mechanism 40, purification box 5, purification component 6, cleaning component 7, driven shaft 71, driven gear 72, drive rod 73, driven rod 74, connecting rod 75, cleaning assembly 76, cleaning connecting rod 761, cleaning plate 762, lower connecting assembly 8, lower water tank 81, sliding tube 82, cylinder 83, sliding connecting rod 84, connecting assembly 9, driven plate 91, driven connecting shaft 92, pawl 93, torsion spring 94, pushing member 50. DETAILED DESCRIPTION

[0028] In view of the deficiencies in the prior art, the inventors of this case have proposed the technical solution of the present invention after long-term research and extensive practice. The following will further explain the technical solution, its implementation process and principles, etc. in conjunction with the drawings in the embodiments of this application and specific implementation cases.

[0029] It should be noted that the embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be understood as limiting the present invention. The embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, the present invention covers any substitution, modification, equivalent method and scheme made within the spirit, principle and scope of the present invention defined by the claims. All other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0030] In the description of this application, "first", "second", "third" and similar words do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, "a" or "an" and other similar words do not indicate a quantity limitation, but rather indicate the existence of at least one. "Include" or "comprising" and other similar words mean that the elements or objects appearing before "include" or "comprising" include the elements or objects listed after "include" or "comprising" and their equivalents, and do not exclude other elements or objects. "Connected" or "connected" and other similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

[0031] In the description of this application, the terms "center," "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inside," "outside," and the like indicate positions or location relationships based on the positions or location relationships described in the accompanying drawings. These terms are intended only to facilitate the description of this application and simplify the description, and are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, when positional terms such as "both sides," "outside," "upper," and "lower" are used, they should be understood to be used solely to facilitate understanding and description, taking into account that the structure may be oriented in other directions.

[0032] In the description of this application, unless otherwise clearly specified and limited, the technical or scientific terms used should have the usual meanings understood by persons with ordinary skills in the field to which this application belongs. Terms such as "install", "connect", and "connect" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, a conflicting connection, or an integrated connection. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0033] The embodiments of the present invention are intended to introduce and illustrate the structural composition of the purification system of the nitrogen production equipment and the coordination relationship between the various components. Unless otherwise specified, the size, material and manufacturing process of each component of the purification system suitable for the nitrogen production equipment in the embodiments of the present invention can be selected according to the specific situation and are not particularly limited or explained here.

[0034] Furthermore, in order to provide the public with a better understanding of the present invention, some specific details are described in detail in the following detailed description of the present invention, but those skilled in the art can fully understand the present invention without the description of these details.

[0035] Please also refer to Figures 1-4 , this embodiment provides a purification system for nitrogen production equipment, including a fan 10, a dust reduction mechanism 20, an air guide pipe 30, and a purification mechanism 40;

[0036] The dust reduction mechanism 20 includes a dust reduction box 1, a water spray component 2, a receiving component 3, and a drive assembly 4. A fan 10 is mounted on and connected to the dust reduction box 1. This means that the fan 10 generates negative pressure to draw the gas to be purified into the dust reduction box 1. The water spray component 2 is mounted within the dust reduction box 1, and the receiving component 3 is arranged to be raised and lowered within the dust reduction box 1. The drive assembly 4 is mounted on the dust reduction box 1. After receiving water, the receiving component 3 can descend and activate the drive assembly 4. Specifically, the water sprayed by the water spray component 2 is received by the receiving component 3. After receiving a certain amount of water, the weight of the water causes the receiving component 3 to descend, activating the drive assembly 4. Specifically, the descent of the receiving component 3 causes the drive assembly 4 to rotate. Preferably, a bell-shaped water guide is provided within the dust reduction box 1.

[0037] The purification mechanism 40 includes a purification box 5, a purification component 6, and a cleaning component 7. The purification box 5 is connected to the dust suppression box 1 via an air duct 30. Specifically, the dust suppression box 1 is connected to the bottom of the purification box 5 via the air duct 30, and the gas moves upward from the bottom of the purification box 5 to achieve purification. The purification component 6 is located within the purification box 5 and includes a filter and other purification components, which can be selected according to the specific usage. Specifically, in this embodiment, the purification component 6 includes a filter, a photocatalytic plate, and an ultraviolet lamp. The cleaning component 7 is slidably disposed within the purification box 5. The sliding of the cleaning component 7 can scrub the purification component 6, and the drive assembly can drive the cleaning component 7 to move back and forth.

[0038] In the present application, the liquid sprayed by the water spraying component 2 collects in the receiving component 3. After a period of time, the gravity generated by the liquid received in the receiving component 3 drives the receiving component 3 downward, thereby activating the driving component 4. The driving component 4 drives the cleaning component 7 to reciprocate, thereby cleaning the purification component 6. In other words, the system described in the present application automatically triggers the cleaning of the purification component 6 after a certain period of operation, thereby avoiding the problem of not cleaning the purification component 6 for a long time due to reasons such as forgetfulness.

[0039] In other schemes, a lower connecting component 8, a connecting component 9 and a pushing member 50 are also provided; the dust reduction box 1 is provided with an opening on the ground, the lower connecting component 8 is provided on the dust reduction box 1, the pushing member 50 is slidably provided on the dust reduction box 1 or the purification box 5, the connecting component 9 is connected to the cleaning component 7, and the reciprocating sliding of the cleaning component 7 can drive the pushing member 50 to gradually slide toward the lower connecting component 8 through the connecting component 9, and squeeze the lower connecting component 8, so that the lower connecting component 8 passes through the dust reduction box 1 and is connected to the inside of the receiving component 3.

[0040] That is, after the cleaning component 7 has moved for a period of time, it drives the pusher 50 to gradually approach the lower connecting component 8 until it squeezes the lower connecting component 8, causing the lower connecting component 8 to extend and insert into the receiving component 3. The liquid in the receiving component 3 flows into the lower connecting component 8. Without the effect of the water's gravity, the receiving component 3 returns to its original position and moves away from the drive component 4, causing the drive component 4 to stop working and, in turn, stop cleaning the purification component 6. As a result, the cleaning of the purification component 6 described in this system can be spontaneously stopped after a period of time, thereby avoiding the wear and tear that may be caused by long-term continuous cleaning. Specifically, the bottom of the receiving component 3 has a switchable opening.

[0041] In other embodiments, the receiving component 3 includes a receiving box 31, a telescopic rod 32, a support spring 33, a baffle 34, and an elastic cord 35. The support spring 33 is fixedly mounted within the dust suppression box 1 and connected to the receiving box 31. One end of the telescopic rod 32 is connected to the inner bottom surface of the dust suppression box 1, and the other end is connected to the receiving box 31. A water outlet is provided on the inner bottom surface of the receiving box 31. The baffle 34 is rotatably mounted within the receiving box 31 and can close the water outlet. The baffle 34 is connected to the inner bottom surface of the receiving box 31 via an elastic cord 35. Specifically, the telescopic rod 32 controls the lifting direction of the receiving box 31. The lower connecting assembly 8 can be lifted to open the baffle 34 and connect to the interior of the receiving box 31, allowing water to flow into the lower connecting assembly 8. Preferably, the side surface of the lower connecting assembly 8 exactly matches the size of the water outlet.

[0042] In other embodiments, the drive assembly includes a motor 41 and a drive gear 42; the motor 41 is located within the dust reduction box 1, and the drive gear 42 is coaxially fixed to the output shaft of the motor 41 and can drive the purification component 6 to slide back and forth. The switch of the motor 41 is a touch switch 43 and is located within the dust reduction box 1. Specifically, the descent of the receiving box 31 squeezes the touch switch 43 of the motor 41, causing the motor 41 to rotate, thereby driving the cleaning component 7 to slide.

[0043] In other embodiments, the cleaning component 7 includes a driven shaft 71, a driven gear 72, a drive rod 73, a driven rod 74, a connecting rod 75, and a cleaning assembly 76; the driven shaft 71 is rotatably connected to the dust suppression box 1, the driven gear 72 is coaxially fixed to the driven shaft 71, and meshes with the drive gear 42; the drive rod 73 is fixed to the driven shaft 71, one end of the driven rod 74 is hinged to the drive shaft, and the other end is hinged to the connecting rod 75, which is connected to the cleaning component 7. The cleaning component 7 is slidably inserted into the purification box 5, and the connecting assembly 9 is provided on the connecting rod 75. It should be understood that the cleaning component 7 described in this application can be approximately regarded as a crank slider mechanism, in which the cleaning component 7 can be regarded as a slider.

[0044] In other embodiments, the cleaning component 7 includes a cleaning rod 761 and a cleaning plate 762; the cleaning rod 761 is provided on the connecting rod 75 and is inserted into the purification box 5, and the cleaning plate 762 is provided on the end of the cleaning rod 761 away from the connecting rod 75. It should be understood that the cleaning rod can clean the purification component 6, such as the filter.

[0045] In other embodiments, the lower connection assembly 8 includes a lower water tank 81, a sliding tube 82, a cylinder 83, and a sliding connecting rod 84. The lower water tank 81 is located on the bottom surface of the dust suppression box 1. The sliding tube 82 is slidably provided within the lower water tank 81 and can be inserted into the receiving box 31. The cylinder 83 is located on the dust suppression box 1 and connected to the sliding tube 82 via the sliding connecting rod 84. Specifically, the pusher 50 can press the switch of the cylinder 83, causing it to drive the sliding tube 82 to insert into the receiving box 31.

[0046] In other embodiments, the pusher 50 is provided with a plurality of ratchet teeth, and the connecting assembly 9 includes a driven plate 91, a driven coupling 92, a pawl 93, and a torsion spring 94; the driven plate 91 is fixed to the connecting rod 75, the driven coupling 92 is provided on the driven plate 91, and the pawl 93 is rotatably provided on the driven coupling 92 and connected to the driven plate 91 via a torsion spring 94. It should be understood that the pawl 93 can push the ratchet teeth on the pusher 50, causing the pusher 50 to slide toward the cylinder 83, and when sliding away from the cylinder 83, the pawl 93 rotates without causing the pusher 50 to slide. In this way, by controlling the length of the pusher 50 and its distance from the cylinder 83, the cleaning assembly 76 can be made to activate the cylinder 83 only after multiple reciprocating motions, thereby making a single cleaning more thorough.

[0047] In other embodiments, the driving gear 42 is a partial gear. By calculating the length of the pusher 50 and the stroke of each push, the driving gear 42 and the driven gear 72 lose meshing when the pusher 50 presses the cylinder 83, and the driven shaft 71 is held stationary by its own friction, thereby providing sufficient contact time between the pusher 50 and the cylinder 83 to allow the sliding tube 82 to extend.

[0048] It should also be understood that a sealing gasket is provided between the cleaning connecting rod 761 and the purification box 5 .

[0049] A nitrogen generating device, using any one of the above-mentioned purification systems for the nitrogen generating device, comprises a nitrogen generator, wherein the air outlet of the nitrogen generator is connected to the fan.

[0050] The purification system and nitrogen generating equipment of the above-mentioned nitrogen generating equipment can avoid the problem of not cleaning the purification components for a long time due to reasons such as forgetfulness.

[0051] It should be understood that the above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it accordingly. It cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, they can make some simple deductions or substitutions without departing from the concept of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A purification system for nitrogen production equipment, characterized by: Including fans, dust suppression mechanisms, air ducts, and purification mechanisms; The dust reduction mechanism includes a dust reduction box, a water spray component, a receiving component and a drive assembly; the fan is arranged on and connected to the dust reduction box, the water spray component is arranged in the dust reduction box, the receiving component is arranged in the dust reduction box in a liftable manner, and the drive assembly is arranged on the dust reduction box. The receiving component can descend and start the drive assembly after receiving water; The purification mechanism includes a purification box, a purification component and a cleaning component; the purification box is connected to the dust suppression box through the air duct, the purification component is arranged in the purification box, and the cleaning component is slidably arranged in the purification box. The sliding of the cleaning component can scrub the purification component, and the driving assembly can drive the cleaning component to move back and forth; A lower connecting component, a connecting component and a pushing member are also provided; an opening is provided on the ground of the dust reduction box, the lower connecting component is provided on the dust reduction box, the pushing member is slidably provided on the dust reduction box or the purification box, the connecting component is connected to the cleaning component, and the reciprocating sliding of the cleaning component can drive the pushing member to gradually slide toward the lower connecting component through the connecting component, and squeeze the lower connecting component, so that the lower connecting component passes through the dust reduction box and is connected to the inside of the receiving component.

2. The purification system for nitrogen production equipment according to claim 1, characterized in that: The receiving component includes a receiving box, a telescopic rod, a supporting spring, a baffle and an elastic rope; the supporting spring is fixed in the dust reduction box and connected to the receiving box, one end of the telescopic rod is connected to the inner bottom surface of the dust reduction box, and the other end is connected to the receiving box; a water outlet is provided on the inner bottom surface of the receiving box, the baffle is rotatably provided in the receiving box and can close the water outlet, and the baffle is connected to the inner bottom surface of the receiving box through the elastic rope.

3. The purification system for nitrogen production equipment according to claim 2, characterized in that: The driving assembly includes a motor and a driving gear; the motor is arranged in the dust reduction box, the driving gear is coaxially fixed on the output shaft of the motor, and can drive the purification component to slide back and forth, and the switch of the motor is a touch switch and is arranged in the dust reduction box.

4. The purification system for nitrogen production equipment according to claim 3, characterized in that: The cleaning component includes a driven shaft, a driven gear, a driving rod, a driven rod, a connecting rod and a cleaning assembly; the driven shaft is rotatably connected to the dust reduction box, the driven gear is coaxially fixed on the driven shaft and meshes with the driving gear; the driving rod is fixed on the driven shaft, one end of the driven rod is hinged to the driving stem, and the other end is hinged to the connecting rod, the connecting rod is connected to the cleaning component, the cleaning component is slidably inserted into the purification box, and the connecting assembly is provided on the connecting rod.

5. The purification system for nitrogen production equipment according to claim 4, characterized in that: The cleaning component includes a cleaning connecting rod and a cleaning plate; the cleaning connecting rod is arranged on the connecting rod and passes through the purification box, and the cleaning plate is arranged on the cleaning connecting rod away from one end of the connecting rod.

6. The purification system for nitrogen production equipment according to claim 5, characterized in that: The lower connecting assembly includes a lower water box, a sliding pipe, a cylinder and a sliding connecting rod; the lower water box is arranged on the bottom surface of the dust reduction box, the sliding pipe can be slidably passed through the lower water box and can be inserted into the receiving box; the cylinder is arranged on the dust reduction box and is connected to the sliding pipe through the sliding connecting rod.

7. A purification system for nitrogen production equipment according to claim 6, characterized in that: The pushing member is provided with a plurality of ratchets, and the connecting assembly includes a driven plate, a driven connecting shaft, a pawl and a torsion spring; the driven plate is fixed on the connecting rod, the driven connecting shaft is provided on the driven plate, the pawl is rotatably provided on the driven connecting shaft, and is connected to the driven plate through the torsion spring.

8. The purification system for nitrogen production equipment according to claim 7, characterized in that: The driving gear is an incomplete gear.

9. A nitrogen production equipment, using a purification system for nitrogen production equipment according to any one of claims 1 to 8, characterized in that: It comprises a nitrogen generator, and the air outlet of the nitrogen generator is connected to the fan.

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