KR20230065454A - Hybrid fan filter unit module system - Google Patents

Abstract

A housing, a fan disposed inside the housing, a filter disposed below the fan to purify the air flowing by the fan, formed to surround the circumference of the filter and coupled to the lower side of the housing, Disclosed is a hybrid fan filter unit module system including a filter frame forming a self-reflux airflow on at least one side and a lighting unit coupled to the filter frame and radiating light downward.

Description

Hybrid fan filter unit module system {HYBRID FAN FILTER UNIT MODULE SYSTEM}

The present invention relates to a hybrid fan filter unit module system capable of meeting energy saving requirements of a clean room, solving a reflux stagnation section at the top of the ceiling, and providing maintenance convenience to operators.

In general, a clean room is completely dust-free and is a space that is blocked or isolated from the outside, where environmental conditions have a great impact on quality, such as where microgenes in cells are handled, such as ultra-high-density integrated circuit manufacturing facilities or genetic manipulation. widely applied in the field.

The cleanliness of a clean room is greatly influenced by the air conditioning system. Currently, the fan filter unit method is mainly used for the air conditioning system of the clean room. This fan filter unit has the advantage of being relatively convenient to expand the clean room within the capacity range of the air conditioner and forming a high local cleanliness. .

An example of such a fan filter unit is disclosed in Patent Registration No. 10-1256586 (2013.04.15.). The fan filter unit disclosed in Patent Registration No. 10-1256586 is a self-reflux fan filter unit, and includes a cover member 110 having an inner space with an open bottom, and a blower fan assembly 120 mounted and fixed inside the cover member. ), a filter assembly 130, and a DC downward discharge type air blade 140, and the LED lamp assembly 150 is installed on the air blade.

However, such a fan filter unit is usually installed on the ceiling of a clean room, but there are cases where lighting such as LED lamps are installed at the bottom, making it difficult to maintain the upper part of the fan filter unit. There is a problem in that a reflux stagnation section occurs around the ceiling and the circulation air volume in the clean room is not controlled.

Therefore, there is a need for a technology that can improve user convenience by facilitating maintenance of the fan filter unit installed inside the clean room, shorten the initial setup time, and reduce by adjusting the amount of circulating air in the clean room. is increasing

One object of the present invention is to provide a hybrid fan filter unit module system capable of adjusting the reflux amount in a clean room and reducing the circulating air volume by giving a self-reflux function to the fan filter unit itself.

Another object of the present invention is to provide a lighting-integrated hybrid fan filter unit module system that can increase user convenience by accessing from the upper side of the fan filter unit and enabling lighting maintenance.

Another object of the present invention is to provide a fan filter unit capable of controlling a fixed wind speed for each external static pressure by means of a self-reflux function.

In order to achieve the object of the present invention, a fan filter unit according to an embodiment of the present invention includes a housing; a fan disposed inside the housing; a filter disposed below the fan to purify the air flowing by the fan; A filter frame formed to surround the circumference of the filter, coupled to the lower side of the housing, and forming a self-reflux air flow on at least one side of the filter; And it may be configured to include a lighting unit that is coupled to the filter frame and radiates light downward.

The filter frame includes an inner wall disposed close to the filter; and an outer wall disposed outside the inner wall to form a circumference larger than that of the housing, and the self-reflux airflow may be formed between the inner wall and the outer wall.

The self-reflux airflow may be formed on both sides of the filter, respectively, and each of the self-reflux airflow may be formed linearly along both sides of the filter.

The filter frame is formed between the inner wall and the outer wall to cover the upper or lower portion of the self-reflux airflow, and has a plurality of ventilation holes formed at positions spaced apart from each other along the extension direction of the self-reflux airflow. top cover; And a plurality of reflux amount control holes disposed on the upper or lower side of the upper cover to be slidably movable along the extension direction of the self reflux flow and formed in corresponding positions to the plurality of ventilation holes formed in the upper cover. It may include a reflux control cover provided.

The hybrid fan filter unit module system further includes a knob coupled to the reflux control cover to control the sliding movement of the reflux control cover, and a long hole for setting a movable range of the knob is formed in the upper cover. , The opening ratio of the plurality of ventilation holes formed in the upper cover may be determined according to an overlap ratio between the plurality of ventilation holes and the plurality of return control holes according to the sliding movement of the return control cover.

The lighting unit may include a lighting PCB module installed inside the filter frame and having a light source emitting light in a lateral direction; and a light guide plate formed in a linear shape parallel to the self-reflux airflow and guiding light emitted from the light source in a lateral direction to be irradiated to a lower side of the filter.

Before the lighting PCB module is installed, one end of the light guide plate is exposed to the self-reflux airflow, and when the lighting PCB module approaches the inner wall of the filter frame within the self-reflux airflow and is coupled to the inner wall, the A light source may contact the light guide plate.

The lighting PCB module includes a protective cover for protecting a mutually facing portion of the light source and the light guide plate in the self-reflux airflow, and a protective cover seating portion protrudes toward the self-reflux airflow on the inner wall, and the lighting PCB module At least a part of the protective cover may be seated on the protective cover seating portion by approaching toward the inner wall of the filter frame within the self-reflux airflow.

The protective cover may include an upper connection portion protruding from a higher position than the protective cover seating portion to be seated on the protective cover seating portion; and a lower connection portion protruding from a position lower than the upper connection portion so as to be seated on an upper side of the light guide plate.

A lower portion of the filter frame may be formed with a structure open toward the lower side and a mounting portion accommodating and fixing the light guide plate.

The hybrid fan filter unit module system includes a differential pressure measurement sensor for measuring differential pressure between an upstream side of the filter and a downstream side of the filter, and a control module installed in the housing to control the fan filter unit and measuring the differential pressure. and a differential pressure measuring connector connected to an area in which air flows downstream of the filter and the differential pressure measuring sensor to enable the sensor to measure the differential pressure, wherein the fan is the filter measured by the differential pressure measuring sensor of each fan filter unit. It can be controlled based on the differential pressure between the upstream and downstream sides of

The effects of the present invention obtained through the above solutions are as follows.

The present invention provides a self-reflux function and a control function to the fan filter unit itself through the self-reflux airflow formed on one side of the filter frame of the fan filter unit, thereby adjusting the reflux amount in the clean room as necessary, and circulating air volume in the clean room. can reduce

In addition, the present invention enables maintenance of lighting at the top of the fan filter unit through a lighting unit structure installed on a filter frame composed of an inner wall and an outer wall structure to irradiate light, thereby facilitating maintenance of the internal cleanliness of the clean room. etc., user convenience can be increased.

In addition, according to the present invention, fixed wind speed control for each external static pressure is possible by the self-reflux function of the filter frame, so that the effect of reducing the external static pressure can be obtained.

In addition, the present invention can shorten the initial setup period of lighting work because it is possible to simultaneously install the fan filter unit and lighting in the clean room.

1A and 1B are perspective views illustrating the overall appearance of a hybrid fan filter unit module system according to an embodiment of the present invention viewed from different directions;
FIG. 2 is an exploded perspective view illustrating a disassembled state of each component of the hybrid fan filter unit module system shown in FIGS. 1A and 1B;
Fig. 3 is a cross-sectional view along baseline AA of the hybrid fan filter unit module system shown in Figs. 1A and 1B;
FIG. 4 is a partial enlarged view of a filter frame portion in which a self-reflux airflow and lighting PCB module is formed in the hybrid fan filter unit module system shown in FIG. 3 in an enlarged manner;
5 is an enlarged partial enlarged view of a filter frame upper cover and a knob portion of the hybrid fan filter unit module system shown in FIG. 4;
6 is a conceptual diagram illustrating a comparison between a wind speed state (b) in a clean room according to driving of a hybrid fan filter unit module system provided by the present invention and a wind velocity state (a) in a clean room according to driving of a conventional fan filter unit.

Hereinafter, the hybrid fan filter unit module system 100 according to the present invention will be described in detail with reference to the drawings.

In this specification, the same or similar reference numerals are assigned to the same or similar components even in different embodiments, and overlapping descriptions thereof will be omitted.

In describing the embodiments disclosed in this specification, if it is determined that detailed descriptions of related known technologies may obscure the gist of the embodiments disclosed in this specification, the detailed descriptions thereof will be omitted.

The accompanying drawings are only for easy understanding of the embodiments disclosed in this specification, and the technical idea disclosed in this specification is not limited by the accompanying drawings, and all changes and equivalents included in the spirit and technical scope of the present invention are included. It should be understood to include water or substitutes.

In the following description, singular expressions include plural expressions unless the context clearly dictates otherwise.

In this application, terms such as "comprise" or "have" are intended to designate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, but one or more other features It should be understood that the presence or addition of numbers, steps, operations, components, parts, or combinations thereof is not precluded.

1A and 1B are perspective views showing the overall appearance of a hybrid fan filter unit module system according to an embodiment of the present invention viewed from different directions.

Referring to these drawings, the hybrid fan filter unit module system 100 includes a housing 110, a fan unit 120 surrounded by the housing 110, and a fan unit disposed below the fan unit 120. A filter 130 purifying air flowing by a fan (or a fan motor assembly, see FIG. 2 ) provided in the 120 is included.

The hybrid fan filter unit module system 100 is formed to surround the circumference of the filter 130 and is coupled to the lower side of the housing 110 so that self-refluxing and lighting functions can be given to the fan filter unit itself. , A filter frame 140 forming a self-reflux airflow (FD) on at least one side of the filter 130, and a lighting unit 160 coupled to the filter frame 140 and irradiating light downward.

That is, the hybrid fan filter unit module system 100 provides a self-reflux function to the fan filter unit itself through the self-reflux airflow (FD) formed on one side of the filter frame 140, so that the filter 130 is upstream and downstream. It is possible to reduce the amount of circulating air in the clean room by adjusting the amount of reflux in the clean room and eliminating the congestion section of the upper part of the ceiling by generating the return air flow that circulates between the sides.

In addition, since the hybrid fan filter unit module system 100 includes a lighting unit 160 that is coupled to the filter frame 140 and emits light downward, it is possible to simultaneously install the fan filter unit and lighting in the clean room, The initial set-up period of the construction can be shortened.

Hereinafter, the detailed configuration of the hybrid fan filter unit module system 100 of the present invention implementing the above effect will be described with reference to FIGS. 1A, 1B, 2, and 3 .

FIG. 2 is an exploded perspective view illustrating a disassembled state of each component of the hybrid fan filter unit module system shown in FIGS. 1A and 1B. FIG. 3 is a cross-sectional view along the baseline A-A of the hybrid fan filter unit module system shown in FIGS. 1A and 1B.

The hybrid fan filter unit module system 100 as a whole has a shape close to a hexahedron. The hybrid fan filter unit module system 100 includes a housing 110 forming upper and side surfaces of a hexahedron. Here, the criterion for the direction, such as the top surface or the side surface, is only determined with reference to the drawings for convenience of explanation, and does not mean an absolute direction. In addition, the filter 130 and the filter frame 140 are coupled to the lower portion of the housing 110 .

The housing 110 may include a main body 111 and side walls 112 and 113. Here, the main body 111 has a shape of a letter C forming two opposite side surfaces and an upper surface of the hexahedron. And the side walls 112 and 113 are configured to form the other two side surfaces not formed by the main body 111 . The side walls 112 and 113 are disposed to face each other at positions spaced apart from each other, and are coupled to or detachable from the main body 111 .

The first sidewall 112 and the second sidewall 113 have a shape close to a flat plate as a whole, but the lower end of the first sidewall 112 and the lower end of the second sidewall 113 are seated on the filter frame 140 to be described later. It has a shape to become. For example, the lower end of the first sidewall 112 and the lower end of the second sidewall 113 may protrude outward, so that the first sidewall 112 and the second sidewall 113 may have a shape of a letter (b).

However, the above configuration of the housing 110 may be changed as needed. For example, the housing 110 may be formed of a single member without having the main body 111 and the two side walls 112 and 113 separately.

A sealing packing 117 for preventing air leakage may be disposed between the housing 110 composed of the main body 111 and the side walls 112 and 113 and the lower filter frame 140 . The sealing packing 117 may also be called a gasket. The sealing packing 117 may be formed of an elastic material such as rubber. In addition, the sealing packing 117 may be formed in a linear (curved) shape along a contact area between the housing 110 and the filter frame 140 or in a rectangular to square closed curve shape.

The working cover 116 is disposed on the upper surface of the housing 110 . The working cover 116 is respectively disposed on one side and the other side of the fan unit 120 in one direction. Working cover 116 may extend linearly.

The sealing packing 117 prevents air introduced into the housing 110 by the fan (or fan motor assembly 121) from leaking to the outside without passing through the filter 130. In addition, the sealing packing 117 prevents the air that refluxes through the self-reflux airflow (FD) from entering the gap between the housing 110 and the filter frame 140.

A control module 190 for controlling the overall operation of the hybrid fan filter unit module system 100 is installed inside the housing 110 . For example, the control module 190 controls the motor of the fan 121, controls On/Off and illuminance of the lighting unit 160, and AVC controls the wind speed of the hybrid fan filter unit module system 100 according to the static pressure outside the aircraft. (Active Velocity Control) function.

The fan unit 120 is seated in an area formed by the housing 110 . The upper surface of the housing 110 is open, and the fan unit 120 is exposed to the upper side of the housing 110 . When the fan 121 of the fan unit 120 operates, the air above the hybrid fan filter unit module system 100 flows into the hybrid fan filter unit module system 100 and passes through the filter 130 to clean room supplied with

The fan 121 may have a wind direction guide 127 equipped with a grill 126 disposed on the upper side, and may include a windmill plate 122 for guiding the air introduced by the fan 121 from the side. . The windmill plate 122 may be fixed to the housing 110 by the plate support 123 .

A filter 130 is installed under the housing 110 . The filter 130 means a particle filter that filters particles (PM) in the air, and may have a shape corresponding to a flat hexahedron. The filter 130 is formed to filter particulate matter from air supplied to the clean room through the hybrid fan filter unit module system 100 .

The filter frame 140 is formed to surround the circumference of the filter 130, is coupled to the lower side of the housing 110, and forms a self-reflux airflow (FD) on at least one side of the filter 130. Here, the circumference of the filter 130 refers to the circumference in the lateral direction based on the drawing. For example, the filter frame 140 is formed to surround the filter 130 in the lateral direction.

Referring to FIGS. 2 and 3 , the filter frame 140 specifically includes an inner wall 141 and an outer wall 142 . The inner wall 141 is disposed relatively close to the filter 130 to enclose the filter 130 . The inner wall 141 may be formed to surround a portion corresponding to the side of the filter 130 and may be disposed to face the side of the filter 130 . The outer wall 142 is disposed outside the inner wall 141 and is formed to surround the inner wall 141 . The outer wall 142 may be disposed at a position spaced apart from the inner wall 141 and may form a circumference of the filter frame 140 that is larger than the housing 110 .

A self-reflux airflow (FD) may be formed between the inner wall 141 and the outer wall 142 . The self-reflux airflow (FD) may be formed on one side and the other side of the filter 130, respectively, where one side and the other side of the filter 130 mean opposite sides of the filter 130. The self-reflux frequency (FD) may be formed linearly along both sides of the filter 130.

Unlike what is shown in the drawing, the self-reflux airflow (FD) may be formed in each of the four rooms of the filter 130 as needed. In this case, each self-reflux airflow (FD) may be formed linearly along the four sides of the filter 130, and may be formed in a square or rectangular shape.

The filter frame 140 forms a self-reflux airflow (FD) through a space formed between the inner wall 141 and the outer wall 142, and the outer wall 142 has a larger circumference than the housing 110. Since the self-reflux air flow (FD) is formed while forming, this wind air flow (FD) is eventually formed as a separate air flow pipe that does not pass through the filter 130, and serves to reflux the downstream air of the filter 130 to the upstream side. .

As the outer wall 142 forms a circumference of the filter frame 140 that is larger than the housing 110, the air that is refluxed through the self-reflux airflow (FD) flows along the area facing the side of the housing 110 as a hybrid fan filter. On the downstream side of the unit module system 100, it is refluxed back upstream.

This self-reflux airflow (FD) structure can be easily installed and adjusted in size in proportion to the size of the filter 130, and can be smoothly installed on both sides of the filter 130 even when the fan 121 is driven with an appropriate strength. There is an advantage in that self-reflux can be generated and the size and structure of the entire hybrid fan filter unit module system 100 can be compactly designed and applied.

Meanwhile, a lower cover 170 having an air inlet hole 171 may be provided at a lower side of the filter frame 140 . A support unit 172 may be formed on the side where the lighting unit 160 is installed to support at least a portion of the lighting unit 160 in the lower cover 170 . The structure of the support part 172 will be described again with reference to FIG. 4 .

The structure or type of the lighting unit 160 is not particularly limited, and may include, for example, an LED module in which a plurality of LED chips are disposed on a panel. In addition, when such an LED module is disposed in a self-reflux air flow (FD), which will be described later, the lighting unit 160 in the form of a light source assembly coupled with a protective cover 162 can be implemented to prevent damage or deformation of the LED module. can

FIG. 4 is an enlarged partial enlarged view of a filter frame portion in which a self-reflux wind speed and a lighting PCB module of the hybrid fan filter unit module system of FIG. 3 are formed, and FIG. 5 is a filter of the hybrid fan filter unit module system shown in FIG. 4 It is a partially enlarged view showing the frame upper cover and knob part enlarged.

The inner wall 141 and the outer wall 142 forming the self-reflux airflow (FD) may be formed in a structure in which two panels face each other. At this time, the two panels included in the inner wall 141 may be respectively referred to as the first inner wall 141a and the second inner wall 141c, and the two panels included in the outer wall 142 may be respectively referred to as the first inner wall 141a and the second inner wall 141c. It may be named as an outer wall 141a and a second outer wall 142c.

The first inner wall 141a is disposed toward the self-reflux airflow (FD), and the second inner wall 141c is disposed toward the filter 130 . The first inner wall 141a and the second inner wall 141c are disposed to face each other at positions spaced apart from each other with respect to the lateral direction of the filter 130 . The first inner wall 141a and the second inner wall 141c may be connected to each other from above and below.

Likewise, the first outer wall 142a is disposed toward the self-reflux airflow (FD), and the second outer wall 142c is disposed toward the outside of the hybrid fan filter unit module system 100 . The first outer wall 142a and the second outer wall 142c are disposed to face each other at positions spaced apart from each other based on the lateral direction of the filter 130 . The first outer wall 142a and the second outer wall 142c may be connected to each other from above and below.

Parts that substantially contribute to the formation of the self-reflux airflow (FD) are the first inner wall 141a and the first outer wall 142a. The aforementioned lower cover 170 may correspond to a portion protruding and/or extending inward from the lower end of the outer wall 142 or the lower end of the first outer wall 142a. In this case, the lower cover 170 and the outer wall 142 may be formed as a single member.

Both ends 151b and 151c of the upper cover 151 of the filter frame 140 can be seated and supported on the inner wall 141 and the outer wall 142 of the double panel structure, so that the upper cover mounting portions 141b 142b ) can be formed, respectively. In order to distinguish the upper cover mounting portion, ordinal numbers of first and second may be added.

The first upper cover seating portion 141b formed on the inner wall 141 may be formed by forming a step between the first inner wall 141a and the second inner wall 141c. The step of the first upper cover mounting portion 141b may extend along the extension direction of the self-reflux airflow FD and may be substantially equal to the height of the upper cover 151 . Since the height of the upper cover 151 may not be constant for each position, the height of the upper cover 151 here refers to the height of a portion seated on the first upper cover mounting portion 141b.

The second upper cover mounting portion 142b formed on the outer wall 142 may protrude inward from the first outer wall 142a. The protruding position of the second upper cover mounting portion 142b is between the upper and lower ends of the first outer wall 142a, and thus also between the second upper cover mounting portion 142b and the upper end of the first outer wall 142a. A step is formed. This level difference may also be substantially the same as the height of the upper cover 151, and the description of the meaning of the height of the upper cover 151 is replaced with the previous description.

The shapes of the two upper cover mounting portions 141b and 142b described above may be interchanged or may be unified into one structure. The filter frame 140 includes an upper cover 151. The upper cover 151 is formed between the inner wall 141 and the outer wall 142 to cover the upper part of the self-reflux air flow (FD). The upper cover 151 has a structure extending linearly along the self-reflux airflow (FD).

The upper cover 151 includes a plurality of ventilation holes 151a formed at positions spaced apart from each other along the extension direction of the self-reflux airflow FD. The ventilation hole 151a is a configuration for adjusting the amount of reflux.

The upper cover 151 may further include a reflux control cover 152 , and the reflux control cover 152 is installed on the upper or lower side of the upper cover 151 . The reflux control cover 152 may have a shape corresponding to that of the upper cover 151, and may have, for example, a structure extending linearly along the self-reflux air flow FD.

The reflux control cover 152 is formed to be slidably movable along the extending direction of the self reflux airflow (FD). Further, the reflux amount control cover 152 includes a plurality of reflux amount control holes 152a formed at corresponding positions of the plurality of ventilation holes 151a formed in the upper cover 151 .

In the case of the reflux control cover 152 shown in FIG. 4, it is disposed on the lower side of the upper cover 151 and is slidably formed along the extension direction of the self reflux flow rate FD.

Here, the opening ratio of the plurality of ventilation holes 151a formed in the upper cover 151 is determined by the plurality of ventilation holes 151a and the plurality of ventilation holes 151a according to the sliding movement of the return amount control cover 152. It may be determined according to the overlap ratio between (152a). Adjustment of the aperture ratio can be done automatically or manually.

For example, when manually adjusting the aperture ratio, the hybrid fan filter unit module system 100 is coupled to the reflux control cover 152 and adjusts the sliding movement of the reflux control cover 152 (153). ), and a long hole 156 for setting a movable range of the knob 153 may be formed in the upper cover 151 .

That is, the filter frame 140 is provided with an upper cover 151 having a plurality of ventilation holes 151a and a plurality of reflux control holes 152a formed at corresponding positions of the plurality of ventilation holes 151a. It includes a reflux amount control cover 152, and the opening ratio of the plurality of ventilation holes 151a formed in the upper cover 151 is adjusted according to the sliding movement of the reflux amount control cover 152. ) and the plurality of reflux control holes 152a, the reflux amount of the self reflux air flow FD can be conveniently adjusted.

Furthermore, the filter frame 140 further includes a knob 153 coupled to the reflux control cover 152 to adjust the sliding movement of the reflux control cover 152, and the knob 153 is provided on the upper cover 151. It is made so that a long hole 156 for setting the movable range of 153 is formed. Therefore, the user manually holds the knob 153 and slides the reflux amount control cover 152 to adjust the opening ratio of the plurality of ventilation holes 151a, thereby adjusting the reflux amount of the self-reflux air flow rate FD. can be adjusted more conveniently.

Adjustment of the aperture ratio does not necessarily have to be performed through the upper cover 151, but may also be performed through the lower cover 170. In this case, the reflux control cover 152 is located above or below the lower cover 170 . In this way, since the adjustment of the aperture ratio can be performed in either the upper cover 151 or the lower cover 170, in this specification, the upper cover 151 and the lower cover 170 are not distinguished, and if simply a cover, this is an upper cover ( 151) and the lower cover 170.

Meanwhile, the lighting unit 160 is installed inside the filter frame 140 . Here, the inside of the filter frame 140 refers to the self-reflux airflow (FD).

The lighting unit 160 includes a lighting PCB module 161, a light guide plate 165a, and a diffusion plate 165b.

The lighting PCB module 161 refers to a combination of a light source mounting PCB 163, a power supply unit 164, and a protective cover 162. The lighting PCB module 161 is installed inside the filter frame 140 .

The light source mounting PCB 163 refers to a PCB on which a light source is mounted, and the light source may be an LED. The light source mounting PCB 163 is installed on the protective cover 162, and the light source emits light in a lateral direction. Here, the lateral direction refers to a horizontal direction with reference to FIG. 4 , and corresponds to a direction from the bottom of the filter frame 140 to the bottom of the filter 130 .

The power supply unit 164 is installed in the protective cover 162 to supply electrical power so that the light source can emit light. The installation position of the power supply unit 164 may be on the opposite side of the light source from the protective cover 162, and thus the power supply unit 164 may be exposed to self-reflux airflow (FD).

The light guide plate 165a guides the light emitted from the light source, and the diffusion plate 165b diffuses the light guided by the light guide plate 165a. The light guide plate 165a and the diffusion plate 165b may be collectively referred to as an optical plate 165 . The light guide plate 165a and the diffusion plate 165b are formed linearly parallel to the self-reflux airflow (FD). The diffusion plate 165b is disposed below the light guide plate 165a.

One end of the light guide plate 165a faces the light source inside the filter frame 140 . Light radiated from the light source in a lateral direction is incident on the light guide plate 165a, and the light is guided by the light guide plate 165a to be irradiated to the lower side of the filter. The diffusion plate 165b diffuses the light guided by the light guide plate 165a and brightly illuminates the lower side of the hybrid fan filter unit module system 100 .

Before the lighting PCB module 161 is installed, one end of the light guide plate 165a is exposed to the self-reflux airflow FD. When the lighting PCB module 161 approaches the inner wall 141 of the filter frame 140 within the self-reflux airflow (FD) and is coupled to the inner wall 141, the light source is connected to the light guide plate 165a. meet naturally. The light source and the light guide plate 165a are formed at a height where they can naturally face each other within the self-reflux airflow (FD).

However, the height encountered here is not a concept limited to a completely horizontal direction. It should be understood that the facing height is a height at which light emitted from a light source in a lateral direction can be incident on the light guide plate 165a.

The protective cover 162 protects a mutually facing portion of the light source and the light guide plate 165a within the self-reflux airflow (FD). For example, on the inner wall 141, the protective cover seating portion 141d protrudes toward the self-reflux air flow FD. The protective cover seating portion 141d protrudes toward the self-reflux air flow FD between the upper and lower ends of the inner wall 141 and may extend linearly along the self-reflux air flow FD.

When the lighting PCB module 161 approaches the inner wall 141 of the filter frame 140 in the lateral direction within the self-reflux airflow (FD), at least a portion of the protective cover 162 is attached to the protective cover mounting portion 141d. settled in Mechanistic settings for positioning the light source and the light guide plate 165a at a height naturally facing each other may be implemented through a structure in which the protective cover 162 is seated on the protective cover mounting portion 141d.

Here, at least a part of the protective cover 162 refers to the upper connection portion 162a of the protective cover 162 . The protective cover 162 includes an upper connecting portion 162a and a lower connecting portion 162b protruding toward the inner wall 141 for setting and fixing the coupling position, and the upper connecting portion 162a is attached to the protective cover mounting portion 141d. and the lower connection part 162b is seated on the upper side of the light guide plate 165a.

The upper connecting portion 162a protrudes from a higher position than the protective cover mounting portion 141d to be seated on the protective cover mounting portion 141d. The upper connection portion 162a may linearly extend along the self-reflux airflow FD, similarly to the protective cover seating portion 141d. When a fastening member (not shown) such as a bolt is installed to pass through the protective cover and the protective cover seating portion 141d while the protective cover 162 is seated on the protective cover seating portion 141d, the fixation is made

The lower connection part 162b protrudes from a position lower than the upper connection part 162a and is seated on the upper side of the light guide plate 165a. The lower connection part 162b may be directly seated on the upper surface of the light guide plate 165a, or another flat member may be positioned between the light guide plate 165a and the lower connection part 184.

The lower connection portion 162b may protrude downward in an oblique direction. The light source may be located between the lower end of the protective cover 162 and the lower connection portion 162b of the protective cover 162, and the lower end of the protective cover 162 may be bent to accommodate the light source. The location of the light source and the structure of the lower connection portion 162b may impart elasticity to the lower connection portion 162b, and allow the lower connection portion 162b to properly press the upper portion of the light guide plate 165a to maintain tension. Also, this makes it possible to set the facing position between the light guide plate 165a and the light source.

Such an installable and detachable structure of the lighting unit 160 allows the user to use the hybrid fan filter unit module system through the FD space formed between the inner wall 141 and the outer wall 142 of the filter frame 140. (100) Convenient maintenance of the lighting unit 160 at the top is possible, thereby increasing user convenience.

The installation and fixing structure of the lighting PCB module 161 is not particularly limited to the above configuration, and various modifications may be applied.

At the lower end of the inner wall 141, a mounting portion 141e having an open lower portion may be formed to fix the light guide plate 165a and/or the diffusion plate 161b. The lower portion of the mounting portion 141e is open, and the remaining portion surrounds the light guide plate 165a and the diffusion plate 161b.

The mounting portion 141e may be formed by the inner wall 141 and the outer wall 142 . For example, as shown in FIG. 4 , the inner wall 141 covers the upper part of the light guide plate 165a, surrounds one side surface of the light guide plate 165a and the diffusion plate 161b, and supports the lower part of one side. The outer wall 142 supports the lower portion of the other side of the light guide plate 165a. At the lower side of the light guide plate 165a and the diffusion plate 161b, the inner wall 141 and the outer wall 142 are spaced apart from each other, so that the mounting portion 141e is open downward.

One end of the light guide plate 165a is inserted into the filter frame 140 through a gap opened in the lateral direction between the inner wall 141 and the outer wall 142 . Also, the aforementioned light source faces one end of the inserted light guide plate 165a.

The mounting portion 141e enables the hybrid fan filter unit module system 100 to effectively irradiate light downward while maintaining a compact structure even when the lighting unit 160 is mounted on the filter frame 140, and the light guide plate 165a and the diffusion plate 161b can be conveniently and stably mounted on the filter frame 140.

6 is a conceptual diagram showing a comparison between a wind speed state (b) in a clean room according to driving of a hybrid fan filter unit module system provided by the present invention and a wind velocity state (a) in a clean room according to driving of a conventional fan filter unit.

As described above, the hybrid fan filter unit module system 100 circulates between the upstream side and the downstream side of the filter 130 of the fan filter unit through the self-reflux airflow (FD) formed on one side of the filter frame 140. It is possible to generate return airflow to adjust the amount of reflux in the clean room and reduce the amount of circulating wind.

In this regard, referring to (a) of FIG. 6, it can be seen that the outside static pressure is different for each zone at the top of the clean room, and the filter static pressure is operated differently for each outside static pressure, and thus, conventionally, a plurality of fan filters in the clean room An imbalance in wind speed between units occurs. In particular, as the fan of the fan filter unit operates at an excessively high speed in a zone where the outside static pressure is low, there is a problem in that energy is wasted.

However, when the hybrid fan filter unit module system 100 is applied to a clean room, this problem can be solved. To this end, first, the static pressure measurement sensor or the differential pressure measurement sensor provided in the control module 190 must be connected to the area where air flows downstream of the filter 130 through a differential pressure measurement connection so that the static pressure or the differential pressure can be measured.

That is, the hybrid fan filter unit module system 100 may include a differential pressure measuring sensor in the control module 190 that measures the differential pressure between the upstream side of the filter 130 and the downstream side of the filter. The differential pressure measuring sensor is formed to measure the differential pressure between one point and two points. For example, point 1 corresponds to an upstream area of the filter 130 and point 2 corresponds to a downstream area of the filter 130 .

In addition, the hybrid fan filter unit module system 100 may further include a differential pressure measurement connector (not shown) to enable the differential pressure measurement of the differential pressure measurement sensor. The differential pressure measurement connection unit is connected to the two-point measurement unit of the differential pressure measurement sensor and an area where air flows downstream of the filter 130 . Here, the material or structure of the differential pressure measurement connector is not particularly limited, and may be formed of, for example, a fitting and a hose. The fitting may be installed in the housing 110 , and the differential pressure measurement connector may pass through at least a portion of the housing 110 or the filter frame 140 .

The fan 121 may be controlled based on differential pressure between the upstream side and the downstream side of the filter 130 measured by the differential pressure measurement sensor of each hybrid fan filter unit module system 100 . In particular, when a plurality of hybrid fan filter unit module systems 100 are installed in a clean room, each hybrid fan filter unit module system 100 has a differential pressure measured by a differential pressure measuring sensor provided in each control module 190. are controlled independently of each other. This control is different from the conventional control method in which the rotational speed (RPM) of the fan 121 is constantly fixed.

In this regard, referring to FIG. 6, the external static pressure of the clean room can be variously distributed (-9 mmAq, -12 mmAq, -15 mmAq, -18 mmAq, -21 mmAq) for each zone. there is. In the prior art (a), the rotational speed of the fans provided in each fan filter unit was uniformly applied at 970 RPM, but in this case, non-uniform conditions were caused for each zone, resulting in energy waste or limitations in improving the airflow and environment in the clean room. .

However, as in the present invention (b), when the RPM of the fan 121 is controlled based on the differential pressure measured by the differential pressure measurement sensor of each hybrid fan filter unit module system 100, the fan 121 for each zone The rotation speed can be independently controlled by 910, 940, 970, 980, 990, etc. In this case, the energy saving mode may be applied by reducing the rotational speed of the fan 121 according to the magnitude of the differential pressure, or by increasing the rotational speed of the fan 121 to keep the pressure and wind speed inside the clean room constant, and can effectively improve the environment.

Such control may be referred to as an Active Velocity Control (AVC) function in that the rotational speed of the fan 121 is actively controlled based on the differential pressure.

With this configuration, referring to (b) of FIG. 6, regardless of the external static pressure, the wind speed of the fan is automatically controlled based on the differential pressure between the upstream and downstream sides of the filter, thereby canceling the gap in the external static pressure. It is done. According to this control method, even if the static pressure outside the aircraft is set differently for each zone, the wind speed of each fan filter unit is controlled by the differential pressure measured by each differential pressure measurement sensor, and through this, the wind speed is balanced between the fan filter units in the clean room. This is achieved, and improvement in power consumption and environment can be expected.

The hybrid fan filter unit module system described above is not limited to the configuration and method of the above-described embodiments, but the above embodiments may be configured by selectively combining all or part of each embodiment so that various modifications can be made. may be

100: hybrid fan filter unit module system
110: housing
120: fan unit
130: filter
140: filter frame
141: inner wall
142: outer wall
151: upper cover
152: reflux control cover
153: knob
161: lighting PCB module
162: protective cover
170: lower cover
190: fan control module

Claims (11)

housing;
a fan disposed inside the housing;
a filter disposed below the fan to purify the air flowing by the fan;
A filter frame formed to surround the circumference of the filter, coupled to the lower side of the housing, and forming a self-reflux air flow on at least one side of the filter; and
a lighting unit coupled to the filter frame and irradiating light downward;
A hybrid fan filter unit module system comprising a.
According to claim 1,
The filter frame,
an inner wall disposed close to the filter; and
And an outer wall disposed outside the inner wall to form a circumference larger than the housing,
The self-reflux airflow is formed between the inner wall and the outer wall, the hybrid fan filter unit module system.
According to claim 2,
The self-reflux airflow is formed on both sides of the filter, and each of the self-reflux airflow is formed linearly along both sides of the filter.
According to claim 2,
The filter frame,
a cover formed between the inner wall and the outer wall to cover the upper or lower portion of the self-reflux airflow and having a plurality of ventilation holes formed at positions spaced apart from each other along an extension direction of the self-reflux airflow; and
A reflux having a plurality of reflux amount control holes disposed on the upper or lower side of the cover to be slidably movable along the extension direction of the self reflux flow and formed at corresponding positions to the plurality of ventilation holes formed in the cover. volume control cover;
A hybrid fan filter unit module system comprising a.
According to claim 4,
The hybrid fan filter unit module system further includes a knob coupled to the reflux control cover to adjust the sliding movement of the reflux control cover,
A long hole for setting a movable range of the knob is formed in the cover,
The opening ratio of the plurality of ventilation holes formed in the cover is determined according to the overlap ratio between the plurality of ventilation holes and the plurality of return control holes according to the sliding movement of the return control cover.
According to claim 1,
the lighting unit,
a lighting PCB module installed inside the filter frame and having a light source emitting light in a lateral direction; and
a light guide plate formed in a linear shape parallel to the self-reflux airflow and guiding the light emitted from the light source in a lateral direction to be irradiated to the lower side of the filter;
Hybrid fan filter unit module system comprising a.
According to claim 6,
Before the lighting PCB module is installed, one end of the light guide plate is exposed to the self-reflux airflow,
The hybrid fan filter unit module system in which the light source contacts the light guide plate when the lighting PCB module approaches the inner wall of the filter frame in the self-reflux airflow and is coupled to the inner wall.
According to claim 7,
The lighting PCB module includes a protective cover for protecting a mutually facing portion of the light source and the light guide plate in the self-reflux wind speed,
The inner wall has a protective cover seating portion protruding toward the self-reflux airway,
The hybrid fan filter unit module system wherein the lighting PCB module approaches toward the inner wall of the filter frame within the self-reflux airflow and at least a portion of the protective cover is seated in the protective cover seating portion.
According to claim 8,
The protective cover,
an upper connection portion protruding from a higher position than the protective cover seating portion to be seated on the protective cover seating portion; and
The hybrid fan filter unit module system includes a lower connection part protruding from a position lower than the upper connection part so as to be seated on the upper side of the light guide plate.
According to claim 6,
The hybrid fan filter unit module system of claim 1 , wherein a lower portion of the filter frame has a structure that is opened toward the lower side, and a mounting portion accommodating and fixing the light guide plate is formed.
According to claim 1,
The hybrid fan filter unit module system,
a control module having a differential pressure measuring sensor for measuring a differential pressure between an upstream side of the filter and a downstream side of the filter, and installed in the housing to control the fan filter unit; and
a differential pressure measurement connecting portion connected to an area where air flows downstream of the differential pressure measurement sensor and the filter to enable the differential pressure measurement of the differential pressure measurement sensor;
Including more,
The hybrid fan filter unit module system of claim 1 , wherein the fan is controlled based on differential pressure between upstream and downstream sides of the filter measured by a differential pressure measurement sensor of each fan filter unit.

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