JPH0538817Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] This invention relates to air filters for air conditioners, etc., and in particular, to an air filter equipped with an air filter that has a filter cleaning function to remove dust attached to the air filter. It concerns a harmonizer.

[Prior art] Figures 4 and 5 are, for example,
FIG. 3 is a perspective view and a plan view of a conventional air conditioner equipped with an air filter, both of which are disclosed in Publication No. 39414.

In the figure, 1 is the air conditioner main body with an air filter of a conventional air conditioner, and 2 is a ring-shaped, so-called endless type air filter.
It is installed behind the indoor air intake of the air conditioner. 3 and 4 are rotating shafts located on both sides behind the suction port, on which the air filter 2 is stretched;
Reference numeral 5 denotes a filter drive motor connected to one of the rotating shafts 4. The rotating shaft 4 is rotated by the drive of this filter driving motor 5, and the rotating shafts 3 and 4 are rotated.
The air filter 2 installed between them is driven to turn endlessly. 6 is a filter cleaning means for removing dust attached to the air filter 2;
a slit portion 6a installed close to the surface of the air filter 2 and across the entire width of the air filter 2;
It consists of a dust suction nozzle part 6b having this slit part 6a at its tip, and an insertion opening part 6c provided at a suitable position of this dust suction nozzle 6b. Reference numeral 7 denotes a suction pipe for connection to a vacuum cleaner or the like that can be detachably fitted into the insertion opening 6c of the filter cleaning means 6.

A conventional air conditioner equipped with an air filter was configured as described above. The operation of this air conditioner with an air filter will be explained below.

First, the operation of collecting dust contained in the air will be described.

When air is blown by operating an air conditioner,
Indoor air is sucked into the air conditioner main body after passing through an air filter 2 installed behind the suction port. Therefore, at this time, the dust contained in the sucked air is collected by the air filter 2, and the air is purified.

However, this collected dust gradually accumulates due to the operation of the air conditioner, and because an excessive load is placed on the air conditioner, sometimes the air filter 2
It was necessary to remove the dust that had adhered to it.

Next, the operation for removing dust adhering to the air filter 2 will be described.

First, the tip of the suction pipe 7 is fitted into the insertion opening 6c of the filter cleaning means 6, and the filter cleaning means 6 is connected to a vacuum cleaner or the like. Next, the filter drive motor 5 is driven to rotate the rotary shaft 4, and the air filter 2 stretched between the rotary shafts 3 and 4 is rotated.
Operate the vacuum cleaner while turning the machine. Thereby, the filter cleaning means 6 can suck the dust adhering to the air filter 2 from the slit portion 6a of the filter cleaning means 6, and the dust adhering to the air filter 2 can be removed.

In this type of air conditioner with an air filter, the air filter 2
It was possible to clean the entire surface.

[Problems to be solved by the invention] In the conventional air conditioner with an air filter as described above, in order to clean the entire surface of the air filter 2, a
Air filters 2 were installed endlessly. Therefore, the air filter 2 inevitably has a double structure, and the air taken in from the room has no choice but to pass through the air filter 2 having the double structure. Therefore, the suction resistance caused by the air filter 2 becomes large, and in particular, as the amount of adhering dust increases, the suction resistance increases significantly, so that it is necessary to frequently remove dust and clean the air filter 2. .

Furthermore, in this type of conventional air conditioner with an air filter, dust adhering to the air filter 2 is removed from the outside of the air filter 2 by a filter cleaning means 6 that uses only suction force. It was hot.

Therefore, there was a problem in that it was difficult to remove dust adhering to the inside of the air filter 2. In other words, minute dust that barely passes through the first air filter 2 located on the suction side of the air conditioner is collected on the suction side of the second air filter 2 located behind it. In addition, a large amount of these dust particles adhered to the inside of the air filter 2 having a double structure. Therefore, the dust inside these double structures cannot be completely removed only by the suction force from the outside of the air filter 2.

In addition, Japanese Patent Application Laid-Open No. 58-36612 and Japanese Patent Application Laid-open No. 58-36612 disclose technology related to air filters having a single layer structure.
-45716, etc. can be mentioned.

The technology published in the former publication is to attach a fan-shaped air filter to a partition wall of a predetermined thickness, and in order to pass through the partition wall, a gap greater than the thickness of the partition wall must be provided between the filter cleaning means and the sector-shaped air filter. In order to increase the suction force applied to the air filter, it is necessary to increase the capacity of the filter cleaning means, and it is difficult to incorporate it into an air conditioner or the like where the type of dust is not specified.

The technology published in the latter publication is to create a circular air filter by arranging a plurality of vanes on the bottom surface of a circular filter and receiving airflow passing through the circular filters of the plurality of vanes. It is something that is rotated. Therefore, the plurality of vanes must intersect at a predetermined angle with respect to the direction of the airflow so as to generate rotational force, and of course, a filter cleaning means is required to pass through the vanes. It is necessary to provide a space between the air filter and the circular air filter that is equal to or greater than the thickness of the vane in the airflow direction, and even in this technology, in order to increase the suction force applied to the circular air filter, a filter cleaning means is required. It is difficult to incorporate it into an air conditioner, etc., as the capacity of the system needs to be increased.

Therefore, this invention was devised to solve these problems.It reduces the suction resistance of the air filter, makes it easier to remove dust attached to the air filter, and has a built-in device inside the air conditioner body. The purpose of this invention is to provide an air conditioner equipped with an air filter.

[Means for Solving the Problems] The air conditioner with an air filter according to this invention is arranged inside a suction grill in the main body of the air conditioner, and the air conditioner is arranged inside the suction grill in the main body of the air conditioner, and the air conditioner that moves from the suction grill in the direction of the heat exchanger. a disk-shaped air filter having a certain thickness that collects dust; a blowing nozzle extending from an outer edge of the air filter toward the center thereof and located on a surface of the air filter opposite to the suction port; an air circulation path having a dust suction nozzle located on the surface on the suction port side, a dust removal fan that circulates air from the surface on the side opposite to the suction port toward the surface on the suction port side; The device is equipped with a dust collection net and a dust collection case for collecting dust in the air.

[Operation] In this invention, the air filter can be rotationally driven in a plane by the flat air filter that collects dust and the filter driving means for the air filter. Moreover, in addition to this, a filter cleaning device that circulates air from the surface on the opposite side of the air filter toward the surface on the side of the suction port to remove dust and the like attached to the air filter is used to clean the air filter. By circulating air in the direction opposite to the direction in which dust is collected from only one side of the suction port, the dust adhering to the air filter can be removed.

[Example] Fig. 1 is a vertical cross-sectional view showing the installed state of an air conditioner with an air filter according to an embodiment of this invention, and Fig. 2 is an enlarged cross-section of the essential parts of an air conditioner with an air filter according to an embodiment of this invention. 3 are perspective views showing the external appearance of the air conditioner with an air filter of this invention.

In the figure, 8 is the air conditioner main body, 9 is the attic where the air conditioner main body 8 is installed, 10 is the ceiling surface which is a partition surface from the room, and 11 is the attic wall. Reference numeral 12 denotes an anchor bolt for fixing the air conditioner main body 8, one of which is embedded in the attic wall 11. 13 is a surface panel of the air conditioner main body 8, which faces the indoor side along the ceiling surface 10. 14 is an inlet for indoor air intake, 15 is an outlet thereof, and 16 is a suction grill installed at the inlet 14, for example, in the shape of a circular lattice. Reference numeral 17 denotes a heat exchanger installed in the air conditioner main body 8, and this heat exchanger 17 adjusts the temperature of indoor air for heating or cooling. Reference numeral 18 is a blower fan for forcibly sucking in and blowing out indoor air, and reference numeral 19 is a fan motor for driving the blower fan 18. 20 is a flat air filter that collects dust contained in the air; 21 is a central shaft that is the rotational center of the air filter 20;
22 is a filter drive motor for rotating the air filter 20. 23 is a filter cleaning means for removing dust attached to the air filter 20; 24 is a dust suction device installed on the suction port side surface of the air filter 20 extending from the outer edge toward the center of the air filter 20; Nozzle, 25
is an air filter 20 facing the dust suction nozzle 24.
26 is a dust removal fan that forcibly circulates air between the blow-off nozzle 25 and the dust suction nozzle 24, and 27 is a dust removal fan 26 installed on the side opposite to the suction port. This is the dust removal fan motor that drives the dust removal fan. Reference numeral 28 denotes an air circulation path which is a flow path for circulating air for filter cleaning generated by the dust removal fan 26 and the dust removal fan motor 27, and 29 represents a dust collection case detachably installed on the suction side of the dust removal fan 26. , 30 is a dust collection net installed on the upper part of this dust collection case 29, and this dust collection net 30 is usually formed of a fine mesh net or the like.

The operation of the air conditioner with air filter configured as described above will be explained below.

First, we will briefly describe the air blowing operation of this air conditioner.

The indoor air is supplied by the blower fan 1 of the air conditioner body 8.
8 and the fan motor 19, the air is sucked into the air conditioner main body 8 through the suction port 14 of the front panel 13. This air passes through the air filter 20 and is purified, and then, when passing through the heat exchanger 17, it is adjusted to an appropriate set temperature, and then the air outlet 15
It is blown out into the room again. The air conditioner main body 8 of this embodiment performs the indoor air circulation operation as described above.

Due to this operation of the air conditioner, the air filter 20 collects dust in the air. The operation for removing this collected garbage will be described below.

For example, the filter drive motor 22 slowly rotates the air filter 20 to which dust has adhered. Along with this rotational movement, the filter cleaning means 2
By carrying out the operation in step 3, dust adhering to the air filter 20 can be removed.

The cleaning operation of the air filter 20 by the operation of the filter cleaning means 23 will be described in detail with reference to FIG. 2.

When the dust removal fan 26 is driven by the dust removal fan motor 27, a circulating air flow for filter cleaning is generated, and this air flow circulates within the air circulation path 28.
This circulating air is sucked in from the dust suction nozzle 24 located on the suction side of the dust removal fan 26.
The air is blown out from the blow-off nozzle 25 located on the blow-out side of the dust removal fan 26 to the anti-suction surface of the air filter 20 . At this time, the dust suction nozzle 24
Dust and the like adhering to the air filter 20 are also sucked in from the air filter 20. Then, only the dust contained in this circulating air is removed by the dust collecting net 30, and the purified air is blown out from the blowing nozzle 25.

The dust collected by the dust collection net 30 is accumulated in the dust collection case 29. Then, when the accumulated amount reaches a predetermined amount, the filter can be removed from the filter cleaning means 23 and the garbage can be disposed of at a suitable time.

As described above, in the air conditioner with an air filter according to the embodiment of this invention, the filter cleaning means 23 has the blowing nozzle 25 and the dust suction nozzle 24, and the circulating air is circulated between these two nozzles at an extremely high flow rate. , dust adhering to the air filter 20 can be strongly removed.

Further, a blowing force and a suction force are simultaneously applied to the air filter 20 from the blowing nozzle 25 and the dust suction nozzle 24, and the flow direction of the circulating air between these two nozzles is also controlled by the blowing fan 18. Since the direction is opposite to the flow of indoor air, that is, the direction opposite to the direction in which dust is deposited, this dust can be easily removed.

Therefore, compared to the conventional filter cleaning means 6, the cleaning ability can be significantly improved.

Furthermore, a rotatable flat air filter 20 is provided.
By employing this, the entire surface of the air filter 20 can be cleaned without using the conventional dual-structure endless air filter 2. Therefore, the disadvantages caused by conventional double-structured air filters, such as increased suction resistance and difficulty in removing dust within the double-structured structure, are also eliminated.

Note that the filter cleaning means 23 can be operated continuously, and the air filter 20 can be cleaned simultaneously with the operation of the air conditioner. If such operation is performed, the air filter 20 is constantly cleaned, and even if the air conditioner continues to be operated, the indoor air suction resistance will not increase. When installed in a place where there is relatively little dust, the filter cleaning means 23 is intermittently
can be controlled to operate.

Next, changes in each component of the air conditioner with air filter of this invention will be described.

The shape of the air filter 20 is similar to that of the dust suction nozzle 24.
Since it is necessary to rotate in a plane between the blow-off nozzle 25 and the blow-off nozzle 25, it is necessary that the radial cross-sectional shapes match, but this outer circumferential shape can be changed arbitrarily. However, in consideration of improving the efficiency of rotational movement, it is desirable to use a disk shape.

Further, in the above embodiment, the filter drive means is a means for directly rotationally driving the air filter 20 using the filter drive motor 22, but it is not necessarily limited to this means, and for example, other means may be used. The air filter 20 may be indirectly rotated using a link mechanism, a speed reduction mechanism, etc. using the driving means.

Also, the configuration of the filter cleaning means 23 is not limited to the configuration of this embodiment. In particular, the shape, installation location, etc. of the dust suction nozzle 24 and the blowing nozzle 25 can be selected arbitrarily.

In the above description, the embodiment of this invention has been described with respect to a ceiling-embedded air conditioner with an air filter, but other types of air conditioners with an air filter may be used. That is, even if the air conditioner has a vertical suction port instead of a horizontal one, it is possible to use the air conditioner with the air filter of this invention. Furthermore, as can be seen from its configuration, the present invention is not limited to the air conditioner of the embodiment described above, and can also be used for ventilation fans and the like.

Furthermore, in the above description, a structure is described in which one air filter 20 is provided and one set of filter cleaning means 23 is installed. A structure in which a plurality of filter cleaning means 23 are combined may be used.

[Effects of the invention] As explained above, the air conditioner with an air filter of this invention is arranged inside the suction grill in the main body of the air conditioner, and the air conditioner that moves from the suction grill toward the heat exchanger is A disc-shaped air filter having a certain thickness that collects dust; a blowing nozzle extending from the outer edge of the air filter toward the center thereof and located on a surface of the air filter opposite to the suction port; and a suction an air circulation path having a dust suction nozzle located on a surface on the mouth side, a dust removal fan that circulates air from the surface on the opposite side to the suction port side toward the surface on the suction port side; and an air circulation path disposed within the air circulation path to circulate air. It is equipped with a dust collection net and a dust collection case that collect dust in the air, and a flat plate-shaped air filter that collects dust is driven to rotate in a plane, so that the dust collected only from one side of the air filter can be removed. The removal is carried out by generating and circulating an air flow in the opposite direction to that at the time of collection by a filter cleaning means, and in addition, the air flow is circulated by a blowing nozzle located on the surface opposite to the suction port of the air filter and the air flow on the suction port side. The dust suction nozzle located on the surface can be brought into close contact with the surface of the air filter, so that the suction capacity of the air filter is not reduced.
Its cleaning can be done easily.

In addition, the filter drive motor that directly rotates the air filter and the dust removal fan motor that rotates the dust removal fan installed in the air circulation path are independent from the air conditioner functions, so the air filter The function of the air conditioner will not be degraded by removing the collected dust.

The disk-shaped air filter is disposed inside the suction grill in the air conditioner main body so as to collect dust in the air moving from the suction grill toward the heat exchanger. Normally, the space that serves as a passage for the suction airflow is used, and the disc-shaped air filter and air circulation path can be easily built into the air conditioner without increasing the size of the main body of the air conditioner.

Further, a blowing nozzle extending from the outer edge of the air filter toward the center and located on the surface opposite to the suction port, a dust suction nozzle located on the surface facing the suction port, and a dust suction nozzle extending from the surface opposite to the suction port of the air filter. A dust collection net and a dust collection case are installed in an air circulation path that includes a dust removal fan that circulates air toward the surface on the suction port side. Cleaning is also facilitated by removing the dust collection case.

[Brief explanation of the drawing]

Fig. 1 is a vertical sectional view showing the installation state of an air conditioner with an air filter equipped with an air conditioner according to an embodiment of this invention, and Fig. 2 is an enlarged view of the main parts of an air conditioner with an air filter according to an embodiment of this invention. 3 is a perspective view showing the external appearance of an air conditioner having an air conditioner with an air filter of this invention; FIG. 4 is a perspective view showing a conventional air conditioner with an air filter; FIG. 5 is a plan view of FIG. 4. In the figure, 20... air filter, 21...
...Center shaft, 22...Filter drive motor, 23...
... Filter cleaning means, 24 ... Dust suction nozzle, 25
...Blowout nozzle, 26...Dust removal fan, 27...
Dust removal fan motor, 28...air circulation path. In addition, in the drawings, the same reference numerals and symbols indicate the same or equivalent parts.

Claims (1)

[Claims for Utility Model Registration] A disc-shaped disk having a certain thickness that is disposed inside a suction grill in the main body of an air conditioner and that collects dust in the air moving from the suction grill toward the heat exchanger. an air filter, a filter drive motor that directly rotates the air filter, and an air outlet that extends from the outer edge of the air filter toward the center and opens close to a narrow surface of the air filter on the side opposite to the suction port. installed in the air conditioner main body, which has a nozzle, a dust suction nozzle that opens on a surface on the suction port side opposite to the blow-off nozzle, and a dust removal fan that circulates air from the surface on the side opposite to the suction port toward the surface on the suction port side. and at least one air circulation path arranged in the air circulation path, and a dust removal fan arranged in the air circulation path that can be operated independently of the operation of the air conditioner main body that rotates the dust removal fan disposed in the air circulation path, and that is interlocked with the filter drive motor. An air conditioner with an air filter, comprising: a fan motor; and a dust collection net and a dust collection case, which are arranged in the air circulation path and collect dust from the circulating air.