KR102677768B1 - Pre-filter for air conditioner - Google Patents

Abstract

The present invention relates to a prefilter for an air conditioner. This includes a frame that takes the form of a square frame and has first and second frame halves connected to each other through hinges; A metal mesh fixed to each frame half; It includes a filter medium accommodated inside the frame, and first and second through-holes are formed in the first frame half and the second frame half, respectively, and overlap each other when the first and second frame halves are closed. is provided with a locking part that is inserted into the first through hole in a state in which the first and second frame halves are closed and maintains the frame half closed, and the locking part; A fixing bracket fixed to the second frame half and corresponding to the second through-hole, a latch pin that is supported on the fixing bracket and capable of adjusting the longitudinal position through the second through-hole, and fixed to the latch pin and the second through-hole of the latch pin. It is provided with a stop plate that limits movement to the second through hole and a spring that supports the stop plate toward the second through hole.
The pre-filter for an air conditioner of the present invention configured as described above can be opened and closed, so only the internal filter medium can be easily replaced, thereby significantly saving the operating cost of the air conditioner. In addition, when replacing the filter medium or even without replacing the filter medium, dust and bacteria attached to the inside of the metal mesh can be removed at the same time, making management easy.

Description

Pre-filter for air conditioner {Pre-filter for air conditioner}

The present invention relates to a pre-filter mounted on an air conditioner, and more specifically, to a pre-filter for an air conditioner that can be opened and closed so that only the internal filter material can be easily replaced, thereby significantly saving the operating cost of the air conditioner. will be.

Pollutants emitted from various manufacturing plants and coal power plants, as well as vehicles on the road, are the main causes of greatly worsening the air quality around us. In particular, fine dust blowing in from China is causing such a big problem that it has recently emerged as a social issue. As is known, yellow dust and fine dust can cause various diseases ranging from respiratory diseases to cancer.

Accordingly, high-performance air conditioners with various purification methods and performances are becoming popular. An air conditioner is a mechanical device that intakes indoor air, removes contaminants in the intake air, and then discharges clean air. Inside the air conditioner, various filters such as pre-filter, HEPA filter, dust collection filter, deodorization filter, and adsorption filter are built in to filter out contaminants in the air.

The pre-filter is a filter located on the outermost side of the air conditioner and primarily serves to filter out contaminants larger than fine dust, such as hair or lint. The pre-filter reduces the load on high-performance filters such as HEPA filters and deodorization filters.

Figure 1 is a diagram showing a pre-filter 10 for a conventional air conditioner.

As shown, the pre-filter 10 includes a frame 11 in the form of a square frame, a filter medium 15 built into the frame 11, and a metal mesh located on both sides of the filter medium 15 to prevent the filter medium from leaving. 13).

However, the conventional pre-filter 10 described above has the disadvantage that the filter medium 15 is trapped between the metal mesh 13 and cannot be removed to the outside. If the pre-filter 10 has been used for a long time and the filter medium 15 needs to be replaced, only the filter medium 15 cannot be replaced. In order to replace the filter medium, the intact frame (11) and metal mesh (13) had no choice but to be discarded together.

The frame 11 and the metal mesh 13 are made of stainless steel, so they are not cheap, and can be used continuously as long as they are not damaged. However, disposing of them together with the filter medium 15 is a waste of resources. .

As a background technology related to air conditioning pre-filters, Domestic Patent Publication No. 10-1789713 (Roll-type high-efficiency pre-filter system for air purification) has been disclosed.

The disclosed pre-filter system includes a frame having a frame body with open front and back surfaces, a first support plate provided at the top of the back of the frame body, and a second support plate provided at the bottom of the back of the frame body; a roll filter having a filter member and a roll member with both ends of the filter member wound; It is provided at both ends of the roll member and consists of roll fixing means having one end fixed to the back of the first and second support plates.
As a prior art, there is Patent Publication No. 10-2014-0065977.

The present invention was created to solve the above problems, and can greatly save the operating cost of the air conditioner by simply replacing the internal filter material, and can remove dust and bacteria attached to the inside of the metal mesh, for use in air conditioners. The purpose is to provide a pre-filter.

The pre-filter for an air conditioner of the present invention as a means of solving the problem for achieving the above object includes a frame that takes the form of a square frame, is interconnected through a hinge, and has a first frame half and a second frame half that can be opened and closed; A metal mesh whose outer portion is fixed to each frame half; In a state accommodated inside the frame, both sides are supported by a mesh and includes a filter medium that allows air to pass, and in the first frame half and the second frame half, a first and second frame half that meet and overlap in a closed state, Two through holes are each formed, and the second frame half is provided with a locking part that is inserted into the first through hole and maintains the frame half closed while the first and second frame halves are closed. The locking part includes; A fixing bracket fixed to the second frame half and corresponding to the second through-hole, a latch pin that is supported on the fixing bracket and capable of adjusting the longitudinal position through the second through-hole, and fixed to the latch pin and the second through-hole of the latch pin. It is provided with a stop plate that limits movement to the second through hole and a spring that supports the stop plate toward the second through hole.

Another pre-filter for an air conditioner of the present invention as a means of solving the problem for achieving the above object includes a frame that takes the form of a rectangular frame, provides a space for accommodating a filter medium, and is opened upward through an opening; a filter medium accommodated within the frame and allowing air to pass therethrough; A metal mesh that supports both sides of the filter medium while being fixed to the frame; A frame cap detachably coupled to the opening of the frame; a horizontal support band that supports and supports the media inside the frame, is capable of being raised and lowered, and takes the shape of a band of a certain width; a lifting rod that connects both ends of the support band and the frame cap, covers both sides of the media, and lifts the support band when lifting the frame cap; It is provided on both sides of the support band in the width direction, and includes a brush to remove dust attached to the inside of the metal mesh when lifting the support band.

In addition, the lifting rod is a vertically extending rod-shaped member and has a vertical passage inside, and at the lower part of the support band, an intake rod is opened toward the metal mesh through an intake slit and has an air passage communicating with the vertical passage. It is further installed, and provides negative pressure within the intake rod through the vertical passage in order to suck in dust shaken off by the brush while the support band is lifted, and includes a negative pressure output unit fixed to the frame and outputting negative pressure, and a negative pressure output unit. It includes a connecting tube connecting the vertical passage and a driving module that operates the negative pressure output unit, and the frame cap is further provided with a handle for gripping when lifting the frame cap, and the side of the handle is connected to the driving module and driven. A switch unit is installed to turn the module on and off.

In addition, by irradiating sterilizing light to the metal mesh from which dust has been removed by the brush, a sterilizing bar is mounted on the lower part of the intake rod and has a plurality of sterilizing lamps, and is connected to the sterilizing lamps and a vertical passage of one side of the lifting rod. It further includes a built-in power line that passes through and is connected to an external power line at the top of the vertical passage.

The pre-filter for an air conditioner of the present invention configured as described above can be opened and closed, so only the internal filter medium can be easily replaced, thereby significantly saving the operating cost of the air conditioner.

In addition, when replacing the filter medium or even without replacing the filter medium, it is possible to maintain a cleaner state by removing dust and bacteria attached to the inside of the metal mesh at the same time.

Figure 1 is a perspective view of a conventional prefilter for an air conditioner.
Figure 2 is an exploded perspective view of a prefilter for an air conditioner according to the first embodiment of the present invention.
FIG. 3 is a partial cross-sectional view for explaining the closed structure of the pre-filter shown in FIG. 2.
Figure 4 is a diagram showing a pre-filter for an air conditioner according to a second embodiment of the present invention.
Figure 5 is a perspective view showing the inner frame of Figure 4 separately.
Figure 6 is a diagram showing the inner frame and cap of Figure 5 separated.
Figure 7 is a cross-sectional view of the prefilter shown in Figure 4.

Hereinafter, one embodiment according to the present invention will be described in more detail with reference to the attached drawings.

Figure 2 is an exploded perspective view of the pre-filter 30 for an air conditioner according to the first embodiment of the present invention, and Figure 3 is a partial cross-sectional view for explaining the closed structure of the pre-filter shown in Figure 2.

As shown, the pre-filter 30 for an air conditioner according to the first embodiment includes a frame 31, a metal mesh 35, a filter medium 39, and a locking portion 37.

The frame 31 consists of a first frame half (31a) and a second frame half (31b) whose lower ends are connected through a hinge 33. The first and second frame halves (31a, 31b) are made of stainless steel and take the shape of a square frame.

In addition, the first frame half (31a) is open toward the second frame half (31b), and the second frame half (31b) is open toward the first frame half (31a). When the first and second frame halves 31b are rotated and retracted around the hinge 33, a space accommodating the filter medium 39 is formed, as shown in FIG. 3.

In this way, by connecting the first frame half (31a) and the second frame half (31b) with a hinge so that they can be opened and closed, only the filter medium (39) can be replaced separately. The filter media 39 can be replaced by simply opening the first and second frame halves (31a, 31b).

The metal mesh 35 is also made of stainless steel, like the first and second frame halves 31a and 31b. The metal mesh 35 has an overall rectangular shape, and its outer portion is welded to the inside of the first and second frame halves 31a and 31b. The metal mesh 35 supports both sides of the filter medium 39 built into the frame 31 and prevents the filter medium 39 from being deformed or separated due to wind pressure. In some cases, reinforcing bars (not shown) may be added to the inside of the metal mesh 35.

The filter medium 39 is a square plate with a certain thickness and is built into the frame 31, allowing air to pass through and filtering out contaminants such as dust in the air. The thickness or shape of the filter medium 39 may vary.

In addition, on the upper part of the first frame half (31a) and the second frame half (31b), that is, on the opposite side of the lower part where the hinge 33 is located, there are two first through holes (31e) and a second through hole (31f). They are formed one by one. Two first through holes (31e) are located in the first frame half (31a), and two second through holes (31f) are located in the second frame half (31b).

As shown in FIG. 3, the first and second through holes (31e, 31f) meet and overlap at the top and bottom when the first and second frame halves are closed. That is, it is located on a straight line in the vertical direction.

The locking portion 37 is inserted into the first through hole while the first and second frame halves 31a and 31b are closed and serves to maintain the closed state of the frame half.

The locking portion 37 includes a fixing bracket 37a, a latch pin 37c, a stop plate 37d, and a spring 37e.

The fixing bracket 37a is formed by bending a stainless steel plate with a certain width and thickness. The fixing bracket (37a) is disposed corresponding to the second through hole (37f), is welded to the second frame half (31b), and supports the latch pin (37c) so that it can be raised and lowered.

The latch pin 37c is a pin member with a constant diameter. The latch pin (37c) penetrates the fixing bracket (37a) and its lower end passes through the second through hole (31f), and its longitudinal position can be adjusted.

The stop plate 37d is a metal plate fixed approximately at the center of the latch pin 37c. The stop plate 37d is elastically supported in the direction of arrow a by a spring 37e and elastically contacts the upper surface of the second frame half 31b. The stop plate (37d) prevents the lower end of the latch pin (37c) from descending more than necessary. That is, it serves as a stopper to prevent the lower end of the latch pin 37c from descending excessively below the first through hole. By the action of the stop plate 37d, the lower end of the latch pin 37c is lowered to a height where it can be inserted into the first through hole 31e, as shown in FIG. 3.

In order to separate the first frame half (31a) and the second frame half (31b) that are coupled by the locking portion (37), the latch pin (37c) is pulled up in the direction of arrow c. Accordingly, when the latch pin 37c is separated from the first through hole 31e, the second frame half 31b is opened from the first frame half 31a.

On the contrary, to combine the separated first frame half (31a) and second frame half (31b), first retract the first and second frame halves (31a, 31b) as much as possible. At this time, the lower end of the latch pin (37c) is caught on the first frame half (31a). In this state, after pulling up the latch pin (37c) in the direction of arrow c, retracting the first and second frame halves (31a, 31b) and then releasing the latch pin (37c), the latch pin (37c) is pulled up by the spring (37e). ) is lowered and inserted into the first through hole (31e). The union has taken place.

FIG. 4 is a diagram showing a pre-filter 40 for an air conditioner according to a second embodiment of the present invention, and FIG. 5 is an exploded perspective view separately illustrating the inner frame of FIG. 4. Additionally, FIG. 6 is a diagram showing the inner frame and cap of FIG. 5 separated, and FIG. 7 is a cross-sectional view of the pre-filter shown in FIG. 4.

As shown, the pre-filter 40 for an air conditioner according to the second embodiment includes a frame 41, a metal mesh 43, a filter medium 39, a frame cap 42, a support band 48, and a lifting rod. (47), a brush (49), an intake rod (51), a sterilizing bar (53), a negative pressure output unit (55), a driving module (56), and a switch unit (44).

The frame 41 takes the shape of a square frame and provides a space to accommodate the filter medium 39. The upper end of the frame 41 is opened upward through the opening 41a. The filter medium 39 can be inserted or removed through the opening 41a.

The metal mesh 43 takes the overall shape of a square plate, and its edge is welded and fixed to the inside of the frame 41. The metal mesh 43 supports both sides of the filter medium 39 while being fixed to the frame, and prevents the filter medium 39 from being deformed or separated by wind pressure.

The frame cap 42 is a member that is detachably coupled to the opening 41a of the frame. When the frame cap 42 is mounted on the frame 41, the opening (41a) is blocked. Additionally, when the frame cap 42 is lifted upward, the frame cap 42 is separated from the frame 41, and the filter medium 39 supported on the lower part of the frame cap 42 can be taken out. An explanation for this will be provided later.

A handle 42a is provided at the center of the upper surface of the frame cap 42. The handle 42a is a grip portion held by the user's hand. The frame cap 42 can be lifted by holding the handle 42a.

And a switch portion 44 is provided on the side of the handle 42a. The switch unit 44 is connected to the drive module 56, which will be described later, and serves to turn the drive module on and off. The switch unit 44 and the driving module 56 can be connected by wired or wireless methods. Additionally, the switching method of the switch unit 44 can be implemented in various ways.

Lifting rods 47 are fixed to the bottom surfaces of both ends of the handle 42a. The lifting rod 47 is a rod-shaped member extending in the vertical direction and forming a right angle to the handle 42a and is accommodated inside the frame 41. Additionally, the lifting rod 47 covers both sides of the filter medium 39. Both parties of Yeo Jae (39) are interviewed at Inyang Road (47). This lifting rod 47 serves to transmit the lifting force of the frame cap 42 to the support band 48 when the frame cap 42 is lifted.

The support band 48 is a band-shaped member with a certain width, and both ends are coupled to the lower end of the lifting rod 47. The support band 48 is a horizontal member that supports the filter medium 39 inside the frame 41.

Ultimately, the frame cap 42, the lifting rod 47, and the support band 48 are interconnected to form an inner frame 45 in the shape of a square frame, which accommodates the media 39 therein and forms one body. It is possible to go up and down.

And brushes 49 are mounted on both sides of the support band 48 in the width direction. The brush 49 serves to brush off dust attached to the inside of the metal mesh 43 when lifting the support band 48. As the pre-filter 40 is used, contaminants such as dust stick to the metal mesh 43, and these contaminants are shaken off.

A vertical passage (47a) is formed at the central axis of the lifting rod (47), and connection holes (48a) are provided at both ends of the support band (48). The connection hole (48a) meets the lower end of the vertical passage (47a). The vertical passage (47a) and the connecting hole (48a) are passages that open the air passage (51a) of the intake rod (51) to the outside.

An intake rod 51 is fixed to the lower part of the support band 48. The intake rod 51 serves to suck in dust shaken off by the brush 49 and discharge it to the outside. The intake rod 51 is a horizontally extending hollow member and has an air passage 51a therein. The air passage 51a is opened toward the metal mesh 43 through the intake slit 51c. And one end of the air passage (51a) communicates with the connecting hole (48a) and the vertical passage (47a). When air is sucked out from the upper part of the vertical passage 47a, negative pressure is formed inside the intake rod 51, and surrounding air (containing contaminants such as dust fallen from the metal mesh 43) is sucked into the intake rod. is sucked into the air passages of

To provide negative pressure to the intake rod 51, a negative pressure output unit 55, a connection tube 55a, and a drive module 56 are further included.

As shown in FIG. 4, the negative pressure output unit 55 is a vacuum pump mounted on the outside of the frame 41 and is coupled to the fixed tube 47c through a connecting tube 55a. The fixing tube 47c is a hollow part fixed to the upper end of the lifting rod 47 and opens the vertical passage 47a upward. The connecting tube 55a is a hose made of rubber and is flexible. The negative pressure output unit 55 is driven by power provided from the outside.

The drive module 56 serves as a controller that operates the sound pressure output unit 55. The driving module 56 is connected to the switch unit 44. When the user lifts the frame cap 42 and turns on the drive module 56 by pressing the switch unit 44, the drive module 56 operates the negative pressure output unit 55.

Meanwhile, a sterilizing bar 53 is further installed at the lower part of the intake rod 51. The sterilizing bar 53 serves to irradiate sterilizing light to the metal mesh 43 after dust has been removed by the brush 49. Since viruses or bacteria may remain on the metal mesh 43 after the dust has been removed, the viruses are removed by irradiating sterilizing light.

The sterilizing bar 53 is fixed to the lower part of the intake rod 51 and extends horizontally, and has a circuit module 53b and a plurality of sterilizing lamps 53a. The circuit module 53b is connected to the built-in power line 57, and drives the sterilizing lamp 53a using power applied through the built-in power line 57. The built-in power line 57 is built into the vertical passage 47a. A plurality of sterilizing lamps 53a are disposed at regular intervals on both sides of the sterilizing bar 53 in the width direction. The sterilizing lamp 53a may be an ultraviolet lamp.

A terminal 57a is provided at the upper end of the built-in power line 57. The terminal 57a is an electrical component connected to the external power line 58. The sterilizing bar 53 is driven by connecting the external power line 58 to the terminal 57a.

Reference numeral 47e denotes a connection part. The connection portion 47e is a cylindrical member with a male thread and is coupled to the external power line 58 to maintain the connection between the external power line 58 and the terminal 57a.

To replace the filter medium 39 in the pre-filter 40 according to the second embodiment, press the switch unit 44 to drive the negative pressure output unit 55 and simultaneously lift the frame cap 42. As the frame cap 42 is lifted, the brush 49 removes dust attached to the metal mesh 43. At this time, dust passes through the intake rod 51, the lifting rod 47, and the connecting tube 55a and is discharged to the outside. In addition, sterilizing light is irradiated to the metal mesh 43 from which dust has been removed, thereby simultaneously sterilizing the metal mesh.

Additionally, replacement of the filter medium 39 is completed by taking out the used filter medium and inserting a new filter medium between the lifting rods 47, then lowering the frame cap 42 and inserting it into the opening 41a of the frame.

Above, the present invention has been described in detail through specific embodiments, but the present invention is not limited to the above embodiments, and various modifications can be made by those skilled in the art within the scope of the technical idea of the present invention.

10: Pre-filter 11: Frame 13: Metal mesh
15: Filter material 30: Pre-filter 31: Frame
31a: First frame half 31b: Second frame half 31e: First through hole
31f: Second through hole 33: Hinge 35: Metal mesh
37: Locking part 37a: Fixing bracket 37c: Latch pin
37d: stop plate 37e: spring 39: media
40: Pre-filter 41: Frame 41a: Opening hole
42: Frame cap 42a: Handle 43: Metal mesh
44: Switch part 45: Inner frame 47: Lifting rod
47a: Vertical passage 47c: Fixed tube 47e: Connection part
48: Support band 48a: Connection hole 49: Brush
51: intake rod 51a: air passage 51c: intake slit
53: Sterilization bar 53a: Sterilization lamp 53b: Circuit module
55: Negative pressure output unit 55a: Connecting tube 57: Built-in power line
57a: terminal 58: external power line

Claims (4)

delete A frame that takes the shape of a square frame and provides a space for accommodating filter media, and is open to the top through an opening;
a filter medium accommodated within the frame and allowing air to pass therethrough;
A metal mesh that supports both sides of the filter medium while being fixed to the frame;
A frame cap detachably coupled to the opening of the frame;
a horizontal support band that supports and supports the media inside the frame, is capable of being raised and lowered, and takes the shape of a band of a certain width;
a lifting rod that connects both ends of the support band and the frame cap, covers both sides of the media, and lifts the support band when lifting the frame cap;
It is provided on both sides of the support band in the width direction and includes a brush to remove dust attached to the inside of the metal mesh when lifting the support band.
The lifting rod is a vertically extending rod-shaped member and has a vertical passage inside,
At the lower part of the support band, a horizontally extending intake rod is further installed that is open to the metal mesh side through an intake slit and has an air passage communicating with the vertical passage,
Providing negative pressure within the intake rod through the vertical passage to suck in dust shaken off by the brush while the support band is being lifted,
A sound pressure output unit fixed to the frame and outputting sound pressure,
A connecting tube connecting the negative pressure output unit and the vertical passage,
It includes a driving module that operates the negative pressure output unit,
The frame cap is further provided with a handle for gripping when lifting the frame cap, and a switch part is installed on the side of the handle, which is connected to the drive module and turns the drive module on and off,
By irradiating sterilizing light to the metal mesh from which dust has been removed by the brush,
A sterilizing bar mounted on the lower part of the intake rod and equipped with a plurality of sterilizing lamps,
It is connected to the sterilization lamp, passes through a vertical passage of one side of the lifting rod, and further includes a built-in power line connected to an external power line at the top of the vertical passage,
Pre-filter for air conditioners. delete delete

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