WO2019073723A1 - Filter device - Google Patents

Abstract

This filter device (1, 1a, 1b, 12) collects foreign material (80) contained in the air sucked into an air suction port (5, 60, 62, 70) of an air conditioning device (2, 41) or the air flowing into a heat exchanger (13, 51, 53) from the air suction port (5, 60, 62, 70). A filter member (20) is formed into a sheet and is disposed such that air flows therethrough. One side of the filter member (20) in a longitudinal direction is wound around a first shaft (21). A second shaft (22) supports the opposite side of the filter member (20) to the first shaft (21) across a part (20a) of the filter member (20) through which air flows. The filter member (20) is configured such that when the part (20a) through which air flows moves toward the second shaft (22), a part of the filter member (20) that has been wound around the first shaft (21) is drawn toward the second shaft (22) and serves as a new part (20a) through which air flows.

Description

Filter device CROSS-REFERENCE TO RELATED APPLICATIONS

This application is based on Japanese Patent Application No. 2017-198370 filed on October 12, 2017, the contents of which are incorporated herein by reference.

The present disclosure relates to a filter device.

2. Description of the Related Art Conventionally, a filter device is known which collects foreign matter such as dust and dirt contained in air flowing from an air suction port of an air conditioner to a heat exchanger.
The filter device described in Patent Document 1 uses a brush to clean foreign matter collected on the filter member, and the filter member is used repeatedly.

JP, 2016-20747, A

However, in the filter device described in Patent Document 1, there is a risk that foreign matter removed from the filter member by the brush may fall into the space that the air conditioner targets for air conditioning. In the filter device, when the foreign matter removed from the filter member by the brush is accumulated inside the air conditioner, the foreign matter may enter the heat exchanger side in the air conditioner.
Furthermore, the filter member provided in the filter device described in Patent Document 1 has substantially the same size as the air suction port of the air conditioner. This filter device is configured to continue to use the same portion while cleaning the foreign matter adhering to the substantially entire surface of the filter member with a brush. Therefore, in the filter device, since the same portion of the filter member is continuously used, the filter member and the cleaning member may be worn in a short period, and the ability of the filter member to collect foreign matter may be decreased in a short period. is there.

An object of the present disclosure is to provide a filter device capable of maintaining the ability to collect foreign matter over a long period of time.

According to one aspect of the present disclosure, there is provided a filter device for collecting foreign matter contained in air sucked into an air suction port of an air conditioner or air flowing from the air suction port to a heat exchanger.
A sheet-like filter member arranged to pass a stream of air;
A first axis on which one longitudinal side of the filter member is wound;
A second shaft supporting a side of the filter member opposite to the first shaft with respect to a portion through which the air flow passes;
When the portion through which the air flow passes is moved to the second axis side, the portion wound around the first axis is pulled out toward the second axis, and the portion through which the air flow passes is exchanged. Are configured to

According to this, when foreign matter adheres to the part through which the flow of air passes among the filter members, it is possible to draw out the part wound around the first axis and exchange the part through which the flow of air passes. Therefore, this filter device can maintain the ability of the filter member to collect foreign matter for a long time. Therefore, this filter device can improve the maintainability of the user.

The reference numerals in parentheses attached to each component, etc., shows an example of a relationship of the specific component such as described in the following embodiments and their components, and the like.

It is a perspective view of a bus in which a bus air conditioner is installed in which a filter device concerning a 1st embodiment is installed. FIG. 2 is a cross-sectional view of a bus air conditioner and a bus ceiling portion as viewed from the direction of the arrow indicated by II in the cross section including the II-II line in FIG. 1; It is a sectional view of a filter device concerning a 1st embodiment. It is sectional drawing of the IV-IV line of FIG. It is sectional drawing which shows the use condition of the filter apparatus concerning 1st Embodiment. It is sectional drawing of the filter apparatus concerning 2nd Embodiment. It is sectional drawing of the filter apparatus concerning 3rd Embodiment. It is a vehicle interior perspective view of the vehicle by which the small air conditioning apparatus in which the filter apparatus which concerns on 4th Embodiment is installed is mounted. It is sectional drawing of the small air conditioner in which the filter apparatus which concerns on 4th Embodiment is installed. FIG. 10 is a cross-sectional view taken along line XX in FIG. FIG. 10 is a cross-sectional view taken along line XI-XI of FIG. It is sectional drawing of the small air conditioner in which the filter apparatus concerning 5th Embodiment is installed. FIG. 13 is a cross-sectional view as seen from the direction of the arrow shown by XIII in the cross section including the line XIII-XIII in FIG. 12; It is sectional drawing of the filter apparatus concerning 6th Embodiment. It is sectional drawing which shows the use condition of the filter apparatus concerning 6th Embodiment. It is sectional drawing of the filter apparatus concerning 7th Embodiment.

Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. In the following embodiments, parts identical or equivalent to each other are given the same reference numerals, and descriptions thereof will be omitted.

First Embodiment
The first embodiment will be described with reference to FIGS. 1 to 5. The filter device 1 of the first embodiment is installed in a bus air conditioner 2.

As shown in FIGS. 1 and 2, the air conditioning unit 3 of the bus air conditioner 2 is mounted on the roof of the bus vehicle 4. The air conditioning unit 3 has an air inlet 5 at a central portion on the vehicle interior side, and an air outlet 6 at the left and right in the vehicle width direction. The filter device 1 is provided at a position corresponding to the air suction port 5 of the air conditioning unit 3 in the ceiling member 7 of the bus. An air passage 9 is formed between the filter device 1 and the air suction port 5 of the air conditioning unit 3 by a packing 8 or a duct. Therefore, the air in the passenger compartment passes through the air passage 9 from the filter device 1 and is sucked into the air suction port 5 of the air conditioning unit 3. That is, the filter device 1 is provided on the ceiling member 7 which is a portion on the upstream side of the air suction port 5 of the air conditioning unit 3. The filter device 1 is for collecting foreign matter such as dust and dirt contained in air sucked into the air suction port 5 from the vehicle compartment. The filter device 1 may be provided not only to the ceiling member 7 of the bus but also to the air suction port 5 of the air conditioning unit 3. The configuration of the filter device 1 will be described later.

Inside the air conditioning unit 3, a ventilation passage 10 in which air flows from the air suction port 5 to the air blowout port 6 is formed. Further, inside the air conditioning unit 3, a blower 11, an inner filter device 12, an evaporator 13 and the like are installed. The filter device 1 provided on the upstream side of the air suction port 5 described above and the inner filter device 12 provided inside the air conditioning unit 3 both correspond to an example of the “filter device” of the present disclosure. Moreover, the evaporator 13 is corresponded to an example of the "heat exchanger" of this indication.

The blower 11 has an electric motor (not shown) and a fan which is rotated by the electric motor. When the blower 11 is driven, the air in the passenger compartment is sucked into the ventilation passage 10 of the air conditioning unit 3 from the air suction port 5 through the filter device 1 and passes through the inner filter device 12 and the evaporator 13 to blow the left and right air. It is blown out into the vehicle compartment from the outlet 6. In FIG. 2, the flows of air flowing from the air suction port 5 to the air outlets 6 on the left and right are indicated by arrows F1 to F5.

The inner filter device 12 collects foreign substances contained in the air flowing from the air suction port 5 to the evaporator 13. A plurality of inner filter devices 12 are disposed to correspond to the plurality of evaporators 13 provided respectively on the left and right in the vehicle width direction.

The evaporator 13 constitutes a known refrigeration cycle together with a compressor, a condenser, an expansion valve and the like which are not shown. The refrigerant circulating in the refrigeration cycle is compressed by the compressor, and then, when flowing through the condenser, dissipates heat to the outside air and condenses. Thereafter, it is decompressed and expanded by the expansion valve, and flows into the evaporator 13 in a gas-liquid two-phase state. The refrigerant flowing into the evaporator 13 absorbs heat from the air flowing through the air passage 10 of the air conditioning unit 3, evaporates, and flows into the compressor. Thus, the air flowing through the air passage 10 of the air conditioning unit 3 is cooled by heat exchange with the refrigerant flowing through the evaporator 13 and then blown out from the air outlet 6 into the vehicle compartment.

Next, the configuration of the filter device 1 provided on the upstream side of the air suction port 5 will be described. The configuration of the filter device 1 and the configuration of the inner filter device 12 provided inside the air conditioning unit 3 are substantially the same.

As shown in FIGS. 3 and 4, the filter device 1 includes a filter member 20, a first axis 21, a second axis 22, and the like. The filter member 20, the first shaft 21, and the second shaft 22 are provided inside the filter case 23. In FIG. 3, the flow of air passing through the filter device 1 is indicated by arrows F6 and F7. The flow of air passing through the filter device 1 flows into the inside from the air inlet 23 a of the filter case 23, passes through the filter member 20, and flows out from the air outlet 23 b of the filter case 23.

Each of the first shaft 21 and the second shaft 22 is formed in a substantially cylindrical shape. The first shaft 21 is provided on one side intersecting the flow direction of the air passing through the filter case 23. The second shaft 22 is provided on the other side intersecting the flow direction of the air passing through the filter case 23. That is, the first shaft 21 and the second shaft 22 are provided on one side and the other side of the filter case 23. The first axis 21 and the second axis 22 are provided in parallel. The first shaft 21 is provided rotatably around the axis with respect to the filter case 23. The second axis 22 is also provided rotatably about the axis with respect to the filter case 23.

The filter member 20 is formed in a sheet shape by, for example, a sponge or a non-woven fabric, and is disposed so that the flow of air passes through. The filter member 20 is capable of collecting foreign matter such as dust and dirt contained in the air by the portion 20a arranged to pass the flow of air. One side of the filter member 20 in the longitudinal direction is wound around the first shaft 21 multiple times. In addition, a portion of the filter member 20 opposite to the first shaft 21 is fixed to the second shaft 22. The filter member 20 is provided across the first shaft 21 and the second shaft 22 so that the flow of air passes therethrough. The second shaft 22 supports the opposite side of the first shaft 21 to the portion 20a through which the air flow passes. Then, when the second shaft 22 rotates, in the filter member 20, the portion 20a through which the flow of air passes moves toward the second shaft 22 and is wound around the second shaft 22. At the same time, the portion of the filter member 20 wound around the first shaft 21 is pulled out toward the second shaft 22 side. Thus, the filter member 20 is configured such that the portion 20a through which the air flow passes is replaced.

The filter case 23 is detachably provided to the ceiling member 7 of the bus. That is, the first shaft 21, the second shaft 22 and the filter member 20 are detachably provided to the ceiling member 7 of the bus. The filter case 23 is eliminated, and the first shaft 21, the second shaft 22 and the filter member 20 included in the filter device 1 can be directly attached to and detached from the ceiling member 7 of the bus or the air inlet 5 of the air conditioning unit 3. You may provide. Further, in the case of the inner filter device 12 provided inside the air conditioning unit 3, the filter case 23 is eliminated, and the first shaft 21, the second shaft 22 and the filter member 20 are directly detachable to the air conditioning unit 3. May be

Subsequently, the operation of the filter device 1 will be described.
FIG. 5 shows a state after a predetermined period has elapsed since the start of use of the filter device 1. In this state, in the filter device 1, a portion of the portion of the filter member 20 wound around the first shaft 21 is pulled out toward the second shaft 22 side, and the first shaft is allowed to pass the air flow A portion disposed across the distance between the second shaft 21 and the second shaft 22 is wound around the second shaft 22. In FIG. 5, the foreign matter 80 is hatched in order to easily show the foreign matter 80 collected on the surface of the filter member 20.

The filter device 1 according to the first embodiment has a configuration in which the filter member 20 is wound around the second shaft 22 in a state where the filter member 20 collects the foreign matter 80. That is, the filter member 20 is wound around the second shaft 22 together with the collected foreign matter 80. As a result, the filter device 1 causes the foreign matter 80 collected by the filter member 20 to fall into the vehicle compartment to be air conditioned by the bus air conditioner 2, and the foreign matter 80 is on the evaporator 13 side in the air conditioning unit 3. It is possible to prevent it from invading.

The filter device 1 can be configured to automatically wind the filter member 20 around the second shaft 22 under the control of an air conditioning ECU (not shown). ECU is an abbreviation of electronic control unit. Specifically, the air conditioning ECU detects a clogging state of the filter member 20 based on a change in current value or the like supplied to the electric motor of the blower 11 provided in the air conditioning unit 3. When the current value of the electric motor becomes larger than a predetermined threshold value, the air conditioning ECU can drive an actuator (not shown) provided on the second shaft 22 to wind the filter member 20 on the second shaft 22. It is. The air conditioning ECU may drive the actuator provided on the second shaft 22 at regular intervals to wind the filter member 20 around the second shaft 22 regardless of the clogging state of the filter member 20. This control can further improve the maintainability of the user.

The filter device 1 may be configured to wind the filter member 20 around the second shaft 22 manually by the user instead of or in addition to the control of the air conditioning ECU. Even with this configuration, the filter device 1 according to the present embodiment can save time and effort for the user to clean the filter member 20 by discharging water or the like, so that the user's maintainability can be improved.

The filter device 1 according to the first embodiment described above has the following effects.
(1) In the first embodiment, one side of the filter member 20 in the longitudinal direction is wound around the first shaft 21, and the side opposite to the first shaft 21 is the second shaft 22 with respect to the portion 20a through which the air flow passes. It is supported by In the filter member 20, when the portion 20a through which the air flow passes is moved toward the second shaft 22, the portion wound around the first shaft 21 is drawn toward the second shaft 22, and the air flow is The passing site 20a is configured to be replaced. According to this, when the foreign matter 80 adheres to the portion 20a of the filter member 20 through which the flow of air passes, the portion wound around the first shaft 21 is pulled out, and the portion 20a through which the flow of air passes is exchanged. It is possible. Therefore, the filter device 1 can maintain the ability of the filter member 20 to collect the foreign object 80 for a long time, and can improve the maintainability of the user.

(2) In the first embodiment, the filter member 20 is configured such that the portion 20 a through which the flow of air passes is wound around the second shaft 22. According to this, the filter device 1 winds around the second shaft 22 in a state where the foreign matter 80 is attached to the filter member 20 without scraping the foreign matter 80 collected by the filter member 20 from the filter member 20. Is possible. Therefore, in the filter device 1, the foreign object 80 collected by the filter member 20 falls into the vehicle compartment to be air conditioned by the bus air conditioner 2, or the foreign object 80 goes to the evaporator 13 side in the air conditioning unit 3. It can be prevented from intruding. Further, in the filter device 1, when the foreign matter 80 collected by the filter member 20 is not scraped off from the filter member 20, a space for storing the foreign matter 80 becomes unnecessary. Therefore, the filter device 1 can be miniaturized.

(3) In the first embodiment, the filter member 20 and the first shaft 21 and the second shaft 22 are detachably provided at the air suction port 5 of the air conditioning unit 3 or at a site upstream of the air suction port 5. . According to this, it is possible to attach or detach the filter device 1 to the air conditioning unit 3 without disassembling the air conditioning unit 3 or the like. Therefore, this filter device 1 can improve the maintainability of the user.

(4) In the first embodiment, the filter device 1 is installed in the bus air conditioner 2. Since the air conditioner 2 for a bus has a long operation time, the filter member 20 is likely to be clogged with the foreign matter 80. Therefore, by installing the filter device 1 in the air conditioner 2 for a bus, the replacement time or cleaning time of the filter member 20 becomes long, so the user's maintainability can be improved.

Second Embodiment
The second embodiment will be described. The second embodiment is a modification of the first embodiment in which part of the configuration of the filter device 1 is changed.

As shown in FIG. 6, in the second embodiment, in the filter member 20 included in the filter device 1, the portion 20 b opposite to the portion 20 a through which the flow of air passes with respect to the second shaft 22 is the second shaft 22. It is configured to drip from the bottom. The second shaft 22 may be configured to support the filter member 20 without winding the filter member 20. The portion 20 b of the filter member 20 which is dripped from the second shaft 22 is accommodated in the accommodating portion 24 provided in the filter case 23. Thereby, the foreign material 80 collected by the filter member 20 is prevented from spilling out of the housing portion 24 to the outside of the filter case 23.
In each embodiment, the direction in which the filter device 1 is installed is not limited. That is, also in the second embodiment, the portion 20b which is dripped from the second shaft 22 is not limited to the lower side in the direction of gravity.

The filter device 1 of the second embodiment described above can also achieve the same effects as those of the first embodiment. Furthermore, in the filter device 1 according to the second embodiment, the configuration on the second shaft 22 side is simplified as compared with the configuration in which the filter member 20 is wound around the second shaft 22 as in the above-described first embodiment. It is possible.

Third Embodiment
A third embodiment will be described. In the third embodiment, a part of the configuration of the filter device 1 is modified with respect to the first and second embodiments.

As shown in FIG. 7, in the third embodiment, in the filter member 20 provided in the filter device 1, the portion 20 b opposite to the portion 20 a through which the flow of air passes with respect to the second axis 22 is the second axis 22 is cut at a portion 20b extending from 22. The second shaft 22 may be configured to support the filter member 20 without winding the filter member 20. The user of the filter device 1 can pull out the portion 20b where the filter member 20 extends from the second shaft 22 and cut it at a predetermined length.

The filter device 1 according to the third embodiment described above can also provide the same effects as those of the first and second embodiments. Furthermore, the filter device 1 according to the third embodiment does not need to have the accommodating portion 24 as in the second embodiment described above, so the size of the filter device 1 can be reduced.

Fourth Embodiment
A fourth embodiment will be described. The filter device 1 of the fourth embodiment is installed in a compact air conditioner 41 mounted on a vehicle 40. As shown in FIG. 8, for example, the small air conditioner 41 may be the ceiling 42 of the vehicle 40, under the seat 43, the rear surface of the backrest 44 of the seat 43, the rear surface of the headrest restraint 45, or the middle portion of the left and right seat 43 Provided near the cooler box 46 mounted on the

The compact air conditioner 41 provided on the ceiling 42 of the vehicle 40 can blow the conditioned air toward the upper body of the occupant seated on the seat 43. The small air conditioner 41 provided under the seat 43 is conditioned air from the bottom of the seat 43 through the urethane member and the skin constituting the seat 43 toward the back and thighs of the occupant seated on the seat 43 and the conditioned air. It is possible to blow out. The compact air conditioner 41 provided on the back surface of the backrest 44 of the seat 43 is air conditioned from the back surface of the backrest 44 toward the back of the occupant seated on the seat 43 through the urethane member and the skin constituting the backrest 44. It is possible to blow the wind. The small air conditioner 41 provided on the rear surface of the headrest restraint 45 can blow conditioned air toward the neck of the occupant seated on the seat 43. The compact air conditioner 41 provided in the vicinity of the cooler box 46 mounted in the middle part of the left and right sheets 43 can blow the conditioned air inside the cooler box 46.

An example of the configuration of the small air conditioner 41 will be described.
As shown in FIGS. 9 to 11, the compact air conditioner 41 is accommodated in the air conditioning case 54 in a state where the compressor 50, the condenser 51, the expansion valve 52, and the evaporator 53, which constitute a refrigeration cycle, are connected by refrigerant piping. A so-called all-in-one type air conditioner. The condenser 51 and the evaporator 53 correspond to an example of the “heat exchanger” of the present disclosure.

In the refrigeration cycle, the compressor 50 compresses the refrigerant circulating in the refrigeration cycle. The condenser 51 causes the air to dissipate the refrigerant compressed by the compressor 50 and condenses the refrigerant. The expansion valve 52 decompresses and expands the refrigerant flowing out of the condenser 51. The evaporator 53 exchanges heat between the decompressed and expanded low-temperature low-pressure refrigerant and the air to evaporate the refrigerant. The refrigerant evaporated by the evaporator 53 is compressed again by the compressor 50.

A partition plate 55 is provided inside the air conditioning case 54. Therefore, the air conditioning case 54 has two air passages 56, 57. Of the two air passages 56, 57 provided in the air conditioning case 54, the first air passage 58 is provided with a first fan 58 together with a compressor 50 and a condenser 51 which constitute a refrigeration cycle. Of the two air passages 56, 57 provided in the air conditioning case 54, the second air passage 57 is provided with a second fan 59 together with an expansion valve 52, an evaporator 53 and the like that constitute a refrigeration cycle.

The air conditioning case 54 has a first air suction port 60 for sucking air into the first ventilation passage 56 and a first air outlet 61 for blowing air from the first ventilation passage 56. The first air suction port 60 is provided with a first filter device 1 a. Further, the air conditioning case 54 has a second air suction port 62 for sucking the air into the second ventilation passage 57 and a second air outlet 63 for blowing the air from the second ventilation passage 57. The second air suction port 62 is provided with a second filter device 1 b. Each of the first filter device 1 a and the second filter device 1 b corresponds to an example of the “filter device” in the present disclosure. The configurations and operations of the first filter device 1a and the second filter device 1b are the same as the filter device 1 described in the first to third embodiments described above, or the filter device 1 described in the sixth and seventh embodiments described later. It is the same.

When the first fan 58 provided in the first ventilation passage 56 is driven, air is drawn into the first ventilation passage 56 from the first air suction port 60 via the first filter device 1 a. The air flowing through the first air passage 56 absorbs heat from the refrigerant flowing through the condenser 51 and is heated by the compressor 50 to become warm air and blown out from the first air outlet 61. In FIGS. 9 to 11, the flow of the air is indicated by arrows F8 and F9. The first filter device 1 a can collect foreign matter 80 contained in the air sucked into the first air suction port 60.

When the second blower 59 provided in the second ventilation passage 57 is driven, air is drawn into the second ventilation passage 57 from the second air suction port 62 via the second filter device 1 b. The air flowing through the second ventilation path 57 dissipates heat to the refrigerant flowing through the evaporator 53 and becomes cold air and is blown out from the second air outlet 63. In FIGS. 9 to 11, the flow of the air is indicated by arrows F10 and F11. The second filter device 1 b can collect the foreign matter 80 contained in the air sucked into the second air suction port 62.

The first and second filter devices 1a and 1b of the fourth embodiment have the same configuration as the filter device 1 and the like of the first to third embodiments described above. Therefore, the first and second filter devices 1a and 1b of the fourth embodiment can exhibit the same effects as those of the filter device 1 and the like of the first to third embodiments described above.

Moreover, 1st, 2nd filter apparatus 1a, 1b of 4th Embodiment is installed in the small air conditioning apparatus 41 for vehicle mounting. In the small air conditioner 41 for mounting on a vehicle, since the area of the air suction port 5 is small, the foreign material 80 is easily clogged in the filter member 20. Furthermore, when the small air conditioner 41 for vehicle installation is arrange | positioned under the sheet | seat 43, adhesion of foreign materials 80, such as a dust, on the filter member 20 will increase. Therefore, by installing the first and second filter devices 1a and 1b of the fourth embodiment with respect to the small-sized air conditioner 41 mounted on a vehicle, it is possible to lengthen the replacement time or cleaning time of the filter member 20. is there. Therefore, the filter device 1 of the fourth embodiment can also improve the maintainability of the user.

Fifth Embodiment
A fifth embodiment will be described. The filter device 1 of the fifth embodiment is also installed in the compact air conditioner 41 mounted on the vehicle 40.

As shown in FIGS. 12 and 13, the small-sized air conditioner 41 according to the fifth embodiment is also an air conditioner in a state where the compressor 50, the condenser 51, the expansion valve, and the evaporator 53 constituting the refrigeration cycle are connected by refrigerant piping. It is a so-called all-in-one type air conditioner housed in the case 54.

On the inner side of the air conditioning case 54, partition plates 65 and 66 are provided on one and the other sides of the centrifugal fan 64 in the radial direction. The two partition plates 65 and 66 are provided on both sides of the rotation shaft of the centrifugal fan 64. Therefore, in the air conditioning case 54, two ventilation paths 67 and 68 are formed. Of the two air passages 67, 68 formed in the air conditioning case 54, the first air passage 67 is provided with a condenser 51 that constitutes a refrigeration cycle. The evaporator 53 which comprises a refrigerating cycle is installed in the 2nd ventilation path 68 among two ventilation paths 67 and 68 formed in air-conditioning case 54. As shown in FIG.

As shown in FIG. 13, the air conditioning case 54 has an air suction port 70 for sucking in air from one side in the rotational axis direction of the centrifugal fan 64. The air conditioning case 54 also has a first air outlet 71 for blowing out the air that has passed through the condenser 51 and a second air outlet 72 for blowing out the air that has passed through the evaporator 53. The air suction port 70 is provided with a filter device 1. The configuration and operation of the filter device 1 are the same as the filter device 1 described in the first to third embodiments described above, or the filter device 1 described in the sixth and seventh embodiments described later.

When the centrifugal fan 64 rotates, air is sucked into the centrifugal fan 64 from the air suction port 70 via the filter device 1. The air blown out radially outward of the centrifugal fan 64 flows to the first air passage 67 or the second air passage 68. The air flowing through the first ventilation path 67 absorbs heat from the refrigerant flowing through the condenser 51 and becomes hot air and is blown out from the first air outlet 71. The air flowing through the second ventilation path 68 dissipates heat to the refrigerant flowing through the evaporator 53 and becomes cold air and is blown out from the second air outlet 72. In FIGS. 12 and 13, the flow of the air is indicated by arrows F11 to F13. The filter device 1 can collect the foreign matter 80 contained in the air sucked into the centrifugal fan 64 from the air suction port 70.

The filter device 1 of the fifth embodiment also has the same configuration as the filter device 1 of the first to third embodiments described above. Therefore, the filter device 1 according to the fifth embodiment can also provide the same effects as those of the first to third embodiments described above.

The filter device 1 of the fifth embodiment is also installed in the small air conditioner 41 for mounting on a vehicle, similarly to the filter devices 1a and 1b of the fourth embodiment. Therefore, the filter device 1 of the fifth embodiment can also achieve the same effects as those of the above-described fourth embodiment.

Sixth Embodiment
A sixth embodiment will be described. In the sixth embodiment, a part of the configuration of the filter device 1 is modified with respect to the first to third embodiments.

As shown in FIG. 14, the filter device 1 according to the sixth embodiment includes a filter member 20, a first shaft 21, a second shaft 22, a filter case 23, a first cleaning member 25, a second cleaning member 26, and the like. There is. The filter member 20, the first shaft 21 and the second shaft 22 are substantially the same as the configuration described in the first embodiment. Briefly, the filter member 20 is formed in a sheet shape, for example, with a sponge or a non-woven fabric, and is disposed so that the air flow passes. The first shaft 21 and the second shaft 22 are provided on one side and the other side of the filter case 23. One side of the filter member 20 in the longitudinal direction is wound around the first shaft 21. The second shaft 22 supports the opposite side of the first shaft 21 to the portion 20a through which the air flow passes. Then, when the second shaft 22 rotates, the filter member 20 draws the portion wound around the first shaft 21 toward the second shaft 22 side, and is wound around the second shaft 22 so that the air flows. It is comprised so that the site | part 20a which 2 passes may be replaced | exchanged.

Two support members 27 and 28 are provided between the first shaft 21 and the second shaft 22. The two support members 27 and 28 are provided on the downstream side in the flow direction of the air passing through the filter device 1 with respect to the portion 20a through which the flow of air passes. The two support members 27 and 28 support the downstream surface of the portion 20a through which the air flow passes. Therefore, bending of the filter member 20 due to the wind pressure passing through the filter member 20 is suppressed. In FIG. 14, the flow of air passing through the filter device 1 is indicated by arrows F14 and F15. Further, in FIG. 14, foreign substances 80 such as dust and dirt collected by the filter member 20 are schematically indicated by ○.

The filter case 23 has a first accommodating portion 29 provided to surround the outer side of the first shaft 21. Further, the filter case 23 has a second accommodating portion 30 provided to surround the outer side of the second shaft 22.

A first cleaning member 25 is provided on the inner wall of the first housing portion 29. A second cleaning member 26 is provided on the inner wall of the second housing portion 30. The first cleaning member 25 and the second cleaning member 26 are made of, for example, a rubber spatula or a brush. The first cleaning member 25 is provided in sliding contact with the filter member 20 wound around the first shaft 21. The first cleaning member 25 is provided to close a gap 29 a between the filter member 20 wound around the first shaft 21 and the first accommodation portion 29. The first cleaning member 25 can elastically deform following the change of the outer diameter of the filter member 20 wound around the first shaft 21. Therefore, even if the outer diameter of the filter member 20 wound around the first shaft 21 changes, the first cleaning member 25 can always be in sliding contact with the filter member 20. Therefore, even if the outer diameter of the filter member 20 wound around the first shaft 21 changes, the first cleaning member 25 forms a gap 29 a between the filter member 20 wound around the first shaft 21 and the first accommodation portion 29. It is possible to close the

The second cleaning member 26 is provided in sliding contact with the filter member 20 wound around the second shaft 22. The second cleaning member 26 is provided to close the gap 30 a between the filter member 20 wound around the second shaft 22 and the second accommodation portion 30. The second cleaning member 26 can also elastically deform following the change of the outer diameter of the filter member 20 wound around the second shaft 22. Therefore, even if the outer diameter of the filter member 20 wound around the second shaft 22 changes, the second cleaning member 26 can always be in sliding contact with the filter member 20. Therefore, even if the outer diameter of the filter member 20 wound around the second shaft 22 changes, the second cleaning member 26 has a gap 30 a between the filter member 20 wound around the second shaft 22 and the second accommodation portion 30. It is possible to close the

Next, the operation of the filter device 1 of the sixth embodiment will be described.
The filter device 1 can be configured to automatically wind the filter member 20 around the second shaft 22 under the control of an air conditioning ECU (not shown). Specifically, the air conditioning ECU detects a clogging state of the filter member 20 based on a change in current value or the like supplied to the electric motor of the blower 11 provided in the air conditioner. When the current value of the electric motor becomes larger than a predetermined threshold value, the air conditioning ECU can drive an actuator (not shown) provided on the second shaft 22 to wind the filter member 20 on the second shaft 22. It is. The air conditioning ECU may drive an actuator provided on the second shaft 22 at regular intervals to wind the filter member 20 around the second shaft 22 regardless of the clogging of the filter member 20. This control can further improve the maintainability of the user.

The filter device 1 may be configured to wind the filter member 20 around the second shaft 22 manually by the user instead of or in addition to the control of the air conditioning ECU. Even with this configuration, the filter device 1 according to the present embodiment can save time and effort for the user to clean the filter member 20 by discharging water or the like, so that the user's maintainability can be improved.

FIG. 15 shows a state after a certain period of time has elapsed since the start of use of the filter device 1. In this state, in the filter device 1, the portion of the filter member 20 which has been wound around the first shaft 21 is pulled out toward the second shaft 22 side and wound around the second shaft 22.

In the filter device 1 according to the sixth embodiment, the foreign matter 80 collected by the filter member 20 is filtered by the second cleaning member 26 while the portion 20a through which the air flow passes is taken up by the second shaft 22. It is configured to be removed from the The foreign material 80 removed from the filter member 20 by the second cleaning member 26 is accommodated in the second accommodation portion 30. Also in FIG. 15, the foreign matter 80 collected by the filter member 20 and the foreign matter 80 removed from the filter member 20 by the second cleaning member 26 are schematically indicated by ○.

As described above, even if the outer diameter of the filter member 20 wound around the second shaft 22 changes, the second cleaning member 26 is wound around the second shaft 22 with the filter member 20 and the second housing portion 30. Can be always closed. Therefore, the second cleaning member 26 can prevent the foreign material 80 stored in the storage portion 24 from flowing out from the gap 30 a between the filter member 20 and the second storage portion 30.

Furthermore, the filter device 1 of the sixth embodiment rotates the first shaft 21 under the control of the air conditioning ECU, and automatically winds up the filter member 20 wound around the second shaft 22 around the first shaft 21. Is possible. The air conditioning ECU drives an actuator (not shown) provided on the first shaft 21 to wind the filter member 20 around the first shaft 21 when the current value of the electric motor of the blower 11 included in the air conditioner becomes larger than a predetermined threshold. Let me take it. The air conditioning ECU may drive an actuator provided on the first shaft 21 at regular intervals to wind the filter member 20 around the first shaft 21 regardless of the clogging of the filter member 20. The filter device 1 may be configured to wind the filter member 20 around the first shaft 21 manually by the user instead of or in addition to the control of the air conditioning ECU. Thus, the filter device 1 shifts from the state of FIG. 15 to the state of FIG. 14 again.

The filter device 1 has a configuration in which the foreign material 80 collected by the filter member 20 is removed from the filter member 20 by the first cleaning member 25 while the portion 20a through which the air flow passes is wound around the first shaft 21. It has become. The foreign material 80 removed from the filter member 20 by the first cleaning member 25 is accommodated in the first accommodation portion 29. As described above, even if the outer diameter of the filter member 20 wound around the first shaft 21 changes, the first cleaning member 25 is wound around the first shaft 21 with the filter member 20 and the first accommodation portion 29. Can be always closed. Therefore, the first cleaning member 25 can prevent the foreign object 80 stored in the storage portion 24 from flowing out from the gap 29 a between the filter member 20 and the first storage portion 29.

The filter device 1 of the sixth embodiment described above has the following effects.
(1) In the sixth embodiment, the second cleaning member 26 is in sliding contact with the filter member 20 wound around the second shaft 22 to remove the foreign matter 80 from the filter member 20. The second housing portion 30 is provided so as to surround the outer side of the second shaft 22, and accommodates the foreign object 80 removed from the filter member 20 by the cleaning member.
According to this, the portion 20 a through which the air flow passes is wound around the second shaft 22 in a state where the foreign matter 80 is removed by the second cleaning member 26. Therefore, the filter member 20 wound around the second shaft 22 can be used again.

(2) In the sixth embodiment, the first cleaning member 25 is in sliding contact with the filter member 20 wound around the first shaft 21 to remove the foreign matter 80 from the filter member 20. The first accommodating portion 29 is provided to surround the outer side of the first shaft 21 and accommodates the foreign matter 80 removed from the filter member 20 by the cleaning member.
According to this, the portion 20 a through which the flow of air passes is wound around the first shaft 21 in a state where the foreign matter 80 is removed by the first cleaning member 25. Thus, the filter member 20 wound around the first shaft 21 can be used again.

(3) In the sixth embodiment, the first cleaning member 25 is provided to close the gap 29 a between the filter member 20 wound around the first shaft 21 and the first accommodation portion 29. The second cleaning member 26 is also provided so as to close the gap 30 a between the filter member 20 wound around the second shaft 22 and the accommodation portion 24. Thereby, the first cleaning member 25 can prevent the foreign object 80 removed from the filter member 20 from flowing out from the gap 29 a between the filter member 20 and the first accommodation portion 29. In addition, the second cleaning member 26 can also prevent the foreign matter 80 removed from the filter member 20 from flowing out through the gap 30 a between the filter member 20 and the second accommodation portion 30.

(4) In the sixth embodiment, the filter device 1 includes the first cleaning member 25, the first accommodation portion 29, the second cleaning member 26 and the second accommodation portion 30. Thus, the filter device 1 alternately winds the filter member 20 around the first shaft 21 and the second shaft 22 while removing the foreign material 80 from the filter member 20 by the first cleaning member 25 and the second cleaning member 26. It is possible. Therefore, the filter device 1 can use the filter member 20 for a long time while maintaining the ability of the filter member 20 to collect the foreign matter 80.

Seventh Embodiment
A seventh embodiment will be described. In the seventh embodiment, a part of the configuration of the filter device 1 is modified with respect to the first to third and sixth embodiments.

As shown in FIG. 16, the filter device 1 of the seventh embodiment includes a filter member 20, a first shaft 21, a second shaft 22, a third shaft 31, and the like. In FIG. 16, the flow of air passing through the filter device 1 is indicated by arrows F16 and F17. The first shaft 21 is provided on one side of the filter case 23, and the second shaft 22 is provided on the other side of the filter case 23. One side of the filter member 20 in the longitudinal direction is wound around the first shaft 21. The second shaft 22 supports the opposite side of the first shaft 21 to the portion 20a through which the air flow passes. The third shaft 31 is provided at a position different from the first shaft 21 and the second shaft 22, and is configured to wind up a portion 20a through which the flow of air passes. In FIG. 16, one side of the filter member 20 in the longitudinal direction is wound around the first shaft 21 a plurality of times, and the other side is wound around the third shaft 31 a plurality of times. The third shaft 31 is not limited to being provided on the first shaft 21 side in the filter case 23 but may be provided on the second shaft 22 side. That is, the position at which the shaft member for winding the filter member 20 is provided is not limited. Further, another shaft member for supporting the filter member 20 may be provided between the second shaft 22 and the third shaft 31, and the filter member 20 may be provided between the first shaft 21 and the second shaft 22. Another shaft member may be provided for supporting.

In the filter member 20, when the third shaft 31 rotates, the portion extending from the second shaft 22 is wound around the third shaft 31, and the portion wound around the first shaft 21 faces the second shaft 22 side. By being pulled out, the portion 20a through which the air flow passes is configured to be replaced.

Therefore, the filter device 1 of the seventh embodiment can exhibit the same effects as those of the filter device 1 of the first to sixth embodiments described above. Furthermore, the filter device 1 according to the seventh embodiment can wind the filter member 20 around the third shaft 31 even if there is no space for winding the filter member 20 at the location where the second shaft 22 is installed, for example. is there. Therefore, this filter device 1 can increase the degree of freedom in design.

(Other embodiments)
The present disclosure is not limited to the embodiments described above, and can be modified as appropriate. Further, the above embodiments are not irrelevant to each other, combination unless obviously impossible, can be appropriately combined. In each of the above embodiments, the elements constituting the embodiments, unless such case considered if explicitly and in principle clearly essential to be essential, it is not necessarily indispensable needless to say Yes. Further, in the above embodiments, when numerical values such as the number, numerical value, amount, range, etc. of constituent elements of the embodiment are mentioned, it is clearly indicated that they are particularly essential and clearly limited to a specific number in principle. It is not limited to the specific number except when it is done. In each of the above embodiments, the shape of the components, when referring to a positional relationship or the like, except in particular clearly the case and principle specific shape, etc. If to be limited to the positional relationship or the like, the shape, It is not limited to the positional relationship and the like.

For example, in the above embodiments, the filter devices 1 and 12 installed in the bus air conditioner 2 mounted on the bus or the filter devices 1 and 1a installed in the small air conditioner 41 mounted on the vehicle 40 Described about 1b. On the other hand, in other embodiments, the filter devices 1, 1a, 1b, 12 may be installed in an air conditioner installed in other types of vehicles, or installed in a building etc. It may be installed in an air conditioning system.

(Summary)
According to a first aspect of the present invention described in part or all of the above embodiments, foreign matter contained in air sucked into the air suction port of the air conditioner or air flowing from the air suction port to the heat exchanger is collected The filter device comprises a filter member, a first axis and a second axis. The filter member is in the form of a sheet and is arranged to pass a stream of air. One longitudinal side of the filter member is wound around the first axis. The second axis supports the side of the filter member opposite to the first axis with respect to the portion through which the air flow passes. Then, when the filter member moves the portion through which the air flow passes to the second axis side, the portion wound around the first axis is pulled out toward the second axis side, and the portion through which the air flow passes is It is configured to be replaced.

According to a second aspect, the filter member is configured such that a portion through which the flow of air passes is wound around the second axis.
According to this, the filter device can be wound around the second shaft in a state where foreign matter is attached to the filter member without scraping the foreign matter collected by the filter member from the filter member. Therefore, the filter device can prevent the foreign matter collected by the filter member from falling into the space to be air-conditioned by the air conditioner, and the foreign matter from entering the heat exchanger side in the air conditioner. . Further, this filter device does not require a space for storing foreign matter if the foreign matter collected on the filter member is not scraped off from the filter member. Therefore, this filter device can miniaturize the physique.

According to the third aspect, the filter member is configured such that a portion through which the air flow passes is wound around a third axis provided at a position different from the first axis and the second axis.
According to this, even when there is no space for winding the filter member at the place where the second axis is installed, it is possible to wind the filter member around the third axis. Therefore, this filter device can increase the freedom of design.

According to the fourth aspect, the filter member is configured such that a portion on the opposite side to the portion through which the air flow passes with respect to the second axis is dripped from the second axis.
According to this, it is possible to make simple the composition by the side of the 2nd axis to the composition which winds up a filter member to the 2nd axis.

According to the fifth aspect, the filter member and the first axis and the second axis are detachably provided to the air suction port of the air conditioner, or detachably provided at a portion on the upstream side of the air suction port.
According to this, it is possible to attach or detach the filter device to the air conditioner without disassembling the air conditioner. Therefore, this filter device can improve the maintainability of the user.

According to a sixth aspect, the filter device further comprises a cleaning member and a housing. The cleaning member is in sliding contact with the filter member wound around the second shaft to remove foreign matter from the filter member. The accommodating portion is provided to surround the outer side of the second shaft, and accommodates the foreign matter removed from the filter member by the cleaning member.
According to this, a portion of the filter member through which the flow of air passes is wound around the second shaft in the state where the foreign matter is removed. Therefore, it is possible to use the filter member wound around the second axis again.

According to the seventh aspect, the cleaning member is provided so as to close the gap between the filter member wound around the second shaft and the housing portion.
According to this, the cleaning member can prevent the foreign matter removed from the filter member from flowing out from the gap between the filter member and the housing portion.

According to an eighth aspect, the filter device further includes a first cleaning member, a first accommodating portion, a second cleaning member, and a second accommodating portion. The first cleaning member is in sliding contact with the filter member wound around the first shaft to remove foreign matter from the filter member. The first accommodating portion is provided to surround the outside of the first shaft, and accommodates the foreign matter removed from the filter member by the first cleaning member. The second cleaning member is in sliding contact with the filter member wound around the second shaft to remove foreign matter from the filter member. The second accommodating portion is provided to surround the outer side of the second shaft, and accommodates the foreign matter removed from the filter member by the second cleaning member.
According to this, the filter device can alternately wind around the first shaft and the second shaft while removing foreign substances from the filter member by the first cleaning member and the second cleaning member. Therefore, the filter device can use the filter member for a long time while maintaining the ability of the filter member to collect foreign matter.

According to the ninth aspect, the first cleaning member is provided so as to close a gap between the filter member wound around the first shaft and the first accommodation portion. The second cleaning member is provided to close a gap between the filter member wound around the second shaft and the second accommodation portion.
According to this, the first cleaning member can prevent the foreign matter contained in the first accommodation portion from flowing out from the gap between the filter member and the first accommodation portion. Further, the filter device can prevent the foreign matter contained in the second accommodation portion from flowing out from the gap between the filter member and the second accommodation portion by the second cleaning member.

According to the tenth aspect, the filter device is a foreign object contained in the air sucked into the air suction port of the air conditioning unit provided in the bus air conditioner mounted on the bus vehicle, or the air flowing from the air suction port to the heat exchanger To collect foreign substances contained in
According to this, since the air conditioner for a bus has a long operation time, the filter member is likely to be clogged with foreign matter. Therefore, by installing this filter device in the air conditioner for a bus, the replacement time or cleaning time of the filter member becomes long, so that the maintainability of the user can be improved.

According to the eleventh aspect, the filter device is installed in the small-sized air conditioner housed inside the air conditioning case in a state where the compressor, the condenser, the expansion valve, and the evaporator that constitute the refrigeration cycle are connected by the refrigerant pipe. Be done. The compact air conditioner is mounted on a vehicle. The filter device is for collecting foreign matter contained in the air sucked into the air suction port of the compact air conditioner or foreign matter contained in the air flowing from the air suction port to the evaporator or the condenser.
According to this, since the small air conditioner for vehicle installation has a small area of the air suction port, the filter member is easily clogged with foreign matter. Moreover, when the small air conditioner for vehicle mounting is arrange | positioned under a sheet | seat, adhesion of a foreign material to a filter member will increase. Therefore, by installing this filter device in a compact air conditioner mounted on a vehicle, the replacement time or cleaning time of the filter member becomes long, and the maintainability of the user can be improved.

Claims (11)

Air sucked into the air suction port (5, 60, 62, 70) of the air conditioner (2, 41) or foreign matter (80) contained in the air flowing from the air suction port to the heat exchanger (13, 51, 53) Filter device (1, 1a, 1b, 12) for collecting
A sheet-like filter member (20) arranged to pass a stream of air;
A first shaft (21) on which one longitudinal side of the filter member is wound;
And a second shaft (22) supporting a side (20a) of the filter member through which the flow of air passes, the side opposite to the first shaft.
In the filter member, when the portion through which the air flow passes is moved to the second axis side, the portion wound around the first axis is pulled out toward the second axis, and the air flow passes through. A filter device that is configured to be replaced. The filter device according to claim 1, wherein the filter member is configured such that a portion through which the air flow passes is wound around the second shaft. The filter member is configured such that a portion through which the air flow passes is wound around a third axis (31) provided at a position different from the first axis and the second axis. The filter device according to 1. The said filter member is comprised so that the site | part (20b) on the opposite side to the site | part through which the flow of air passes with respect to the said 2nd axis may be dripped from the said 2nd axis | shaft. Filter device. The filter member, the first shaft, and the second shaft are detachably provided to the air suction port of the air conditioner, or provided detachably at a portion (7) upstream of the air suction port. The filter device according to any one of claims 1 to 4. A cleaning member (25, 26) in sliding contact with the filter member wound around the second shaft to remove foreign matter from the filter member;
The filter device according to claim 2, further comprising a housing (29, 30) provided to surround the outer side of the second shaft, and housing a foreign substance removed from the filter member by the cleaning member. The filter device according to claim 6, wherein the cleaning member is provided to close a gap (30a) between the filter member wound around the second shaft and the accommodation portion. A first cleaning member (25) in sliding contact with the filter member wound around the first shaft to remove foreign matter from the filter member;
A first accommodating portion (29) which is provided so as to surround the outside of the first shaft, and which accommodates foreign matter removed from the filter member by the first cleaning member;
A second cleaning member (26) in sliding contact with the filter member wound around the second shaft to remove foreign matter from the filter member;
The filter device according to claim 2, further comprising: a second accommodating portion (30) which is provided so as to surround the outer side of the second shaft, and accommodates the foreign matter removed from the filter member by the second cleaning member. The first cleaning member is provided to close a gap (29a) between the filter member wound around the first shaft and the first accommodation portion.
The filter device according to claim 8, wherein the second cleaning member is provided to close a gap (30a) between the filter member wound around the second shaft and the second accommodation portion. The filter device is a foreign object contained in the air sucked into the air suction port (5) of the air conditioning unit (3) provided in the bus air conditioner (2) mounted on the bus vehicle (4), or the air suction port The filter device according to any one of claims 1 to 9, wherein foreign matter contained in air flowing to the heat exchanger (13) is collected. The filter device is disposed inside the air conditioning case (54) in a state where the compressor (50), the condenser (51), the expansion valve (52) and the evaporator (53) constituting the refrigeration cycle are connected by refrigerant piping. Foreign matter contained in the air sucked into the air suction ports (60, 62, 70) of the housed compact air conditioner (41) or foreign matter contained in the air flowing from the air suction port to the evaporator or the condenser To collect
The filter device according to any one of the preceding claims, wherein the compact air conditioner is mounted on a vehicle (40).

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