JP5642135B2 - Dust remover for air conditioner and air conditioner - Google Patents

Description

  The present invention relates to a dust remover for an air conditioner that is installed upstream of an intake port of an air conditioner and removes dust from intake air, and an air conditioner including the dust remover.

  As a dust remover for this type of air conditioner, in the dust remover of the conventional air conditioner for railway vehicles, the filter for dust removal is a take-up type, and when the dust removal capability is reduced, it is wound up to supply a new surface, The maintenance is extended. In such a dust removing device, it is necessary to remove, clean and rewind the filter after the filter has been wound and wound in about six months.

  Further, as a wind-up type filter device, “an endless continuous moving filter having a filter body made of a fluororesin-based fiber provided on the front surface of an air suction port of an air conditioner duct so as to cover the air suction port” And a pair of brush rolls that are provided so as to be in contact with both sides of the filter body of the endless continuous moving filter and that rotate in a direction opposite to the moving direction of the filter body. Have been proposed (for example, see Patent Document 1).

  Furthermore, "a filter provided at the suction port of the indoor unit of the air conditioner, a cover member that covers the filter and is fixed to the suction port, a cleaning nozzle provided between the filter and the cover member, A cleaning mechanism for an air conditioner, wherein the cleaning nozzle has a suction port on the filter side and a connection port for a vacuum source on the opposite side, and the suction port is located between the suction port and the insertion port. Has been proposed (for example, see Patent Document 2).

Japanese Patent Publication No. 8-20102 (Page 2, Fig. 1 etc.) JP 2009-92273 A (page 4-5, FIG. 1 etc.)

  Dust collected from the air adheres to a filter provided in an air conditioner for a railway vehicle. If the amount of accumulated dust increases, the passage of air deteriorates and air conditioning efficiency decreases. For this reason, the conventional dust remover automatically rolls up the roll filter to supply a new surface, so that the filtering ability of the filter is not lowered transiently, thereby extending the maintenance. However, in such a dust removing device, the filter finishes winding in about half a year, so that maintenance work such as removal, cleaning, and rewinding of the filter is required, and it is a problem to extend the period until further filter maintenance. Also, the installation space and the winding mechanism must be taken into account, and it is not simply a matter of lengthening the filter.

  In the technique described in Patent Document 1, an object attached to the filter is removed by a pair of brushes facing each other with the filter interposed therebetween. However, since the filter and the brush are in contact with each other at a point, the scraping surface of the object by the brush is substantially small, and dust removal is not efficient.

  Further, in the case of cleaning the filter by rotating the cleaning nozzle as in the technique described in Patent Document 2, since the nozzle draws a circular orbit, it is generally not possible to remove the dust at the corner of the square filter. Impossible. Especially for air conditioners for facilities and vehicles, the amount of processing air is large and the area of the filter needs to be increased. Accordingly, it is necessary to configure a large nozzle or install a plurality of nozzles. Problems arise in device size, mass, workability, operational reliability, and the like.

  The present invention has been made to solve the above-described problems, and is used for an air conditioner having a small size and good workability that can efficiently remove dust adhering to the filter body while securing the area of the filter body. The present invention provides a dust removing device and an air conditioner equipped with the dust removing device.

A dust remover for an air conditioner according to the present invention is installed upstream of an air inlet of an air conditioner, and is a drive shaft driven by a motor in a dust remover for an air conditioner for removing dust from intake air. A driven shaft that is rotated by being driven by the drive shaft, an endless band-shaped filter body that is spanned between the drive shaft and the driven shaft, and is movable by the rotation of the drive shaft, and the filter body A suction nozzle having an opening formed at the tip of the filter body in the width direction of the filter body, and an electric blower for giving suction force to the suction nozzle When, wherein the suction nozzle, wherein at least a portion of said opening is disposed so as to face the drive shaft or the driven shaft, between the filter body and the opening A clearance is formed, and a clearance between the opening end of the opening on the upstream side in the moving direction of the filter body and the filter body is defined as a clearance between the opening end of the opening on the downstream side in the moving direction of the filter body and the filter body. It is larger than the clearance between .

  According to the dust removing device for an air conditioner according to the present invention, the compact and good workability can efficiently remove dust adhering to the filter body while securing the area of the movable endless belt-like filter body. Become.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic perspective view of a side surface of a vehicle provided with a dust remover for an air conditioner according to Embodiment 1 of the present invention. It is a top view of FIG. It is an AA schematic sectional drawing of FIG. It is BB sectional drawing of FIG. FIG. 5 is a plan view of FIG. 4. It is side surface sectional drawing which expands and shows the dust removal mechanism part of FIG. It is CC sectional drawing of FIG. It is a schematic sectional side view which expands and shows the suction nozzle part of the dust remover for air conditioning apparatuses which concerns on Embodiment 2 of this invention. It is a schematic sectional side view which expands and shows the suction nozzle part of the dust remover for air conditioning apparatuses which concerns on Embodiment 3 of this invention. It is a schematic sectional side view which expands and shows the suction nozzle part of the dust remover for air conditioning apparatuses which concerns on Embodiment 4 of this invention. It is a general | schematic horizontal sectional view which expands and shows the suction nozzle part of the dust remover for air conditioning apparatuses which concerns on Embodiment 5 of this invention.

  Embodiments of the present invention will be described below with reference to the drawings. In this embodiment, an example in which a dust removing device is applied to a vehicle air conditioner that performs air conditioning in a vehicle will be described. However, the air conditioner to which the dust removing device is applied is not limited to that for a vehicle. . In addition, in the following drawings including FIG. 1, the relationship of the size of each component may be different from the actual one. Further, in the following drawings including FIG. 1, the same reference numerals denote the same or equivalent parts, and this is common throughout the entire specification. Furthermore, the forms of the constituent elements shown in the entire specification are merely examples, and are not limited to these descriptions.

Embodiment 1 FIG.
FIG. 1 is a schematic perspective view of a side surface of a vehicle 1 provided with a dust remover for an air-conditioning apparatus (hereinafter referred to as a dust remover 20) according to Embodiment 1 of the present invention. FIG. 2 is a view showing an intake port (ceiling intake port 2a) and an exhaust port (ceiling exhaust port 2b) of the vehicle 1 in FIG. 1, and corresponds to a partially transparent schematic plan view of FIG. 3 is a schematic cross-sectional view taken along the line AA of FIG. In the following, the length direction of the vehicle 1 corresponds to the left-right direction in FIG. 2, and the width direction of the vehicle 1 corresponds to the up-down direction in FIG.

  As shown in FIG. 1, a vehicle air conditioner 10 that performs air conditioning in the vehicle 1 is disposed outside the vehicle 1 above the vehicle 1. As shown in FIG. 2, the ceiling 2 of the vehicle 1 has a ceiling air inlet 2 a that communicates with an air inlet (not shown) of the vehicle air conditioner 10, and an air outlet (not shown) of the vehicle air conditioner 10. And a ceiling exhaust port 2b communicating with the. The ceiling air inlet 2 a is formed at both ends in the width direction of the vehicle 1 so as to extend in the length direction of the vehicle 1. Moreover, the ceiling exhaust port 2b is formed in two places here in the center direction of the length direction and the width direction of the vehicle 1 at predetermined intervals in the width direction.

  As shown in FIG. 1, a decorative panel 3 is disposed inside the vehicle on the upper side of the vehicle 1 at a predetermined distance downward from the ceiling 2 of the vehicle 1, and has a ceiling intake port 2 a and a ceiling exhaust port. 2b is hidden in the shadow of the decorative panel 3, and is formed in the position which cannot be seen from a passenger. The decorative panel 3 is formed with an in-vehicle intake port 3a communicating with the ceiling intake port 2a, an in-vehicle exhaust port 3b communicating with the ceiling exhaust port 2b, and an in-vehicle auxiliary exhaust port 3c communicating with the ceiling exhaust port 2b. .

  The vehicle intake ports 3a are arranged at two locations in the length direction of the vehicle 1 at each of both end portions in the width direction of the vehicle 1, and here, a total of four locations are formed. Further, a plurality of in-vehicle exhaust ports 3b are formed at the center in the width direction of the vehicle 1 with a predetermined interval in the vehicle length direction (six locations in FIG. 2). Further, the in-vehicle auxiliary exhaust port 3 c is formed at two locations on both sides of the in-vehicle exhaust port 3 b in the vehicle width direction so as to extend in the length direction of the vehicle 1.

  As shown by the arrows in FIG. 3, the vehicle air conditioner 10 sucks air in the vehicle 1 from the air intake port of the vehicle air conditioner 10 through the vehicle intake port 3a and the ceiling air intake port 2a. Air is blown out into the vehicle 1 through the ceiling exhaust port 2b, the vehicle interior exhaust port 3b, and the vehicle interior auxiliary exhaust port 3c. The vehicle air conditioner 10 performs air conditioning in the vehicle 1 while circulating the air in the vehicle 1 in this way. The vehicle air conditioner 10 includes a refrigerant circuit in which a compressor, a condenser, a throttling device, and an evaporator are connected by piping, and a blower that supplies air to be exchanged with refrigerant flowing through the condenser and the evaporator, At least.

  A control device 11 of the vehicle air conditioner 10 is disposed on the ceiling 2 side of the decorative panel 3. The control device 11 is configured by a microcomputer, for example, and controls the entire vehicle air conditioner 10 and also controls the drive of the dust removing device 20. The control device 11 measures the operation time of the vehicle air conditioner 10 and holds the operation integration time (not shown), and a counter (not shown) that detects and counts the number of winding operations of the filter 22 described later. (Omitted) at least.

  Further, in the air path from the vehicle interior air inlet 3a to the ceiling air inlet 2a, dust is filtered and collected from the intake air directed to the air inlet of the vehicle air conditioner 10, and clean air is collected into the vehicle air conditioner. A dust removing device 20 for supplying to 10 is disposed. On the vehicle 1 side of the ceiling 2, there are mounting frames 12 in which two openings 12 a are formed in the vehicle length direction corresponding to the in-vehicle intake port 3 a through which the air toward the intake port of the vehicle air conditioner 10 passes. Two pieces are fixed at both ends in the vehicle width direction. A dust removing device 20 is detachably attached to each of the attachment frames 12 corresponding to the openings 12a.

  4 is an enlarged schematic cross-sectional view of the dust removing device 20 of FIG. 1, and corresponds to a cross-sectional view taken along the line BB of FIG. FIG. 5 is a plan view of FIG. 6 is an enlarged side cross-sectional view of the dust removing mechanism portion of FIG. 7 is a cross-sectional view taken along the line CC of FIG. The dust removing device 20 will be described with reference to FIGS.

  The dust remover 20 rotates a filter 22 by rotating a drive shaft 24 and a filter (filter body) 22 made of endless belt-like mesh material made of, for example, saran material, in a housing 21 having an intake port 20a and an exhaust port 20b. And a deodorizing filter 40. The motor 23 is a driving means for moving the dust, a dust removing mechanism 30 for removing dust attached to the filter 22, and a deodorizing filter 40. As shown in FIG. 7, the motor 23 and the drive shaft 24 are connected by a timing belt 41, and the rotational force of the motor 23 is transmitted to the drive shaft 24 via the timing belt 41.

  The filter 22 is stretched between a drive shaft 24 driven by a motor 23 and a driven shaft 25 driven and rotated by the drive shaft 24. When the drive shaft 24 is rotated by the motor 23, the filter 22 rotates. Accordingly, it moves in the direction of the solid line arrow in FIG. Further, an idler 26 is provided in the middle of the drive shaft 24 and the driven shaft 25, and an appropriate tension is applied to the filter 22 by the idler 26 to prevent idling of the drive shaft 24 and the driven shaft 25. It is said.

  The motor 23 is electrically connected to the control device 11 (see FIG. 1) of the vehicle air conditioner 10 and is driven and controlled by the control device 11. Further, the rotation detector 13 for detecting whether or not the driven shaft 25 has rotated a predetermined amount is attached to the driven shaft 25. The rotation detector 13 outputs a signal while the driven shaft 25 performs a predetermined amount of rotation, and stops the signal output when the predetermined amount of rotation ends. The control device 11 stops the rotation of the motor 23 in response to the fact that the signal from the rotation detector 13 cannot be obtained.

  The vehicle interior air passes through the filter 22 in the direction indicated by the dotted arrow in FIG. 4, and the filter 22 moves in the direction indicated by the solid line arrow in FIG. 4, which is orthogonal to the direction in which the vehicle interior air passes. One surface on the upstream side of the filter 22 is a filtration region surface 22a that filters and collects dust from the in-vehicle air flowing in from the intake port 20a. The filtration region surface 22a is configured to substantially match the opening area of the intake port 20a. The other surface on the downstream side of the filter 22 is a dust-removed surface (cleaning surface) 22b from which the collected dust is removed. A dust removing mechanism 30 for removing dust adhering to the filtration region surface 22a is disposed on the dust-removed surface 22b side of the filter 22.

  The dust removal mechanism 30 removes dust attached to the filter 22 when the filter 22 passes through the dust removal mechanism 30. Hereinafter, the configuration of the dust removing mechanism 30 will be described.

  The dust removing mechanism 30 includes a suction nozzle 31 for removing dust accumulated on the filter 22 from the filter 22, a dust collecting unit 32 for accumulating dust sucked from the suction nozzle 31, and an electric blower that applies suction to the suction nozzle. Part 33.

  The suction nozzle 31 has an opening 31a at the tip for taking in dust removed from the filter 22 by the suction force from the electric blower 33. Further, as shown in FIG. 5, the suction nozzle 31 is installed over substantially the entire width of the filter 22. Further, the tip of the suction nozzle 31 is curved corresponding to the curved shape of the filter 22 in a cross-sectional view as shown in FIG. 6, and the opening 31 a has a shape along the curved portion of the filter 22. It has become. Here, at least a part of the opening 31a of the suction nozzle 31 is disposed so as to face the curved portion of the filter 22 with a predetermined interval. Further, the suction nozzle 31 is arranged so that at least a part of the opening 31 a faces the outer peripheral surface of the drive shaft 24.

  The dust collecting unit 32 collects dust sucked through the suction nozzle 31, and includes a dust collecting case 32a, a case lid 32b, and a paper pack 32c installed inside the dust collecting case 32a. The The case lid 32b is pivotally supported with respect to the dust collecting case 32a, and the paper pack 31c can be taken out by opening the case lid 32b from the cabin side.

  The electric blower unit 33 has an electric blower 33a, an electric blower case 33b that houses the electric blower 33a therein, a function of suppressing vibration during operation, and a pre-protection for holding the electric blower 33a with respect to the electric blower case 33b. A vibration rubber 33c and a rear vibration isolation rubber 33d are provided. Further, an electric blower exhaust port 33e for discharging the exhaust from the electric blower 33a is formed in the electric blower case 33b.

  The deodorizing filter 40 is composed of, for example, a manganese oxide-based catalyst filter, and is disposed between the exhaust port 20b of the housing 21 and the filter 22 before being sucked into the intake port of the vehicle air conditioner 10. It removes the odor of intake air. As shown in FIGS. 4 and 5, the deodorizing filter 40 is formed in a size that covers a surface corresponding to substantially half of the filtration region surface 22 a of the filter 22. If the entire filtration region surface 22a is covered with the deodorizing filter 40, the air permeability is deteriorated. Therefore, the surface corresponding to approximately half is covered here. Thereby, it is possible to obtain both the dust removing ability and the odor removing effect.

Next, operations of the vehicle air conditioner 10 and the dust remover 20 will be described.
When the vehicle air conditioner 10 is driven by the control device 11, the air in the vehicle 1 is taken into the vehicle air conditioner 10 through the vehicle inlet 3a, the dust remover 20, and the ceiling inlet 2a. At this time, dust contained in the in-vehicle air is removed by the dust removing device 20, and clean air flows into the vehicle air conditioner 10. The air flowing into the vehicle air conditioner 10 is conditioned air in the vehicle air conditioner 10. And after discharging | emitting from the air conditioning apparatus 10 for vehicles, it blows off in the vehicle 1 through the ceiling exhaust port 2b, the vehicle interior exhaust port 3b, and the vehicle interior auxiliary exhaust port 3c.

  In the dust removing device 20, the in-vehicle air that has flowed into the housing 21 from the air inlet 20 a first passes through the filtration region surface 22 a of the filter 22. The vehicle interior air is cleaned by filtering dust contained in the filtration region surface 22a, and then passes through the deodorizing filter 40 to remove odors. 10 is discharged. As described above, the air in the vehicle circulates through the dust removing device 20, the vehicle air conditioner 10, and the vehicle 1, so that dust gradually accumulates on the filtration region surface 22a.

  After the operation of the vehicle air conditioner 10 is started, the control device 11 measures the operation time of the vehicle air conditioner 10 by the time measuring unit, and the predetermined operation integrated time preset by the operation integrated time measured by the time measuring unit is set. When (for example, 20 hours) is reached, a drive command is issued to the motor 23 and the electric blower 33a.

  When a drive command is issued from the control device 11, the motor 23 rotates the drive shaft 24 a predetermined number of times. Specifically, after outputting the drive command, the control device 11 rotates the drive shaft 24 only while the signal from the rotation detector 13 provided on the driven shaft 25 returns. As a result, the filter 22 is fed by a predetermined amount, the filtration region surface 22a passes through the dust removal mechanism 30, and the dust adhering to the filtration region surface 22a is removed to become the dust removed surface 22b. The dust-removed surface 22b located at the position moves to the upstream side and is reused as a new filtration region surface 22a.

  The dust removal operation by the dust removal mechanism 30 is as described above. When the drive shaft 24 rotates in response to a drive command from the control device 11, the filtration region surface 22a moves to the suction nozzle 31 side as the drive shaft 24 rotates. At this time, suction force is generated in the suction nozzle 31 by the electric blower 33a, but the opening 31a is disposed so as to face the drive shaft 24 with the filtration region surface 22a interposed therebetween. Therefore, the degree of vacuum in the suction nozzle 31 is high, and dust adhering to the surface side and inner surface side of the filtration region surface 22a and the joint can be efficiently removed. This is because most of the surface of the drive shaft 24 is in contact with the inner surface side of the filtration region surface 22a. Conversely, when the opening 31a is installed at a location where no structure is present on the inner surface side of the filtration region surface 22a, the filter 22 naturally has air permeability, so that the degree of vacuum in the suction nozzle 31 is almost zero. It does not increase, and dust cannot be removed efficiently.

  The dust sucked from the suction nozzle 31 is accumulated in the paper pack 32c in the dust collecting section 32. At the same time, air sucked together with dust (dust-containing air) is filtered into the paper pack 32c and discharged from the electric blower exhaust port 33e as clean air. When the dust accumulated in the paper pack 32c is discarded, the case lid 32b is opened, and the paper pack 32c is removed from the dust collection case 32a and discarded.

  As described above, in the dust removing device 20, the filter 22 is rotated every specified integration time, and the filtration region surface 22a is automatically cleaned by the dust removal mechanism 30, while the dust-removed surface 22b is a new filtration region surface 22a. Repeat the operation to be reused. Each time the filter winding operation is performed once, the counter of the control device 11 counts the number of operations by adding one. When this count reaches the set number of times (the number of winding operation limits corresponding to the life of one filter 22), the control device 11 turns on an indicator lamp (not shown) that prompts replacement of the dust removal device 20, and automatically Stop operation.

  As described above, in the dust removing device 20 according to the first embodiment, the dust attached to the filter 22 is automatically removed by the dust removing mechanism 30. Therefore, a complicated cleaning operation of the filter 22 is performed. In addition, the filtering capacity of the dust removing device 20 can be maintained in a good state. Further, the dust can be efficiently removed by suction using the separation of the dust due to the curvature of the filter 22. Further, by utilizing the surface of the drive shaft 24 for moving the endless belt-like filter 22 and increasing the degree of vacuum in the suction nozzle 31 to improve dust efficiency, a structure for increasing the degree of vacuum is separately provided. Therefore, the entire apparatus can be reduced in size and weight. Therefore, it is possible to effectively utilize the limited vehicle space and to obtain an effect of improving workability during construction.

  Further, the filter 22 is moved by a predetermined amount, and the filtration area surface 22a on which dust is accumulated is passed through the dust removal mechanism 30 to be a dust removed surface 22b, while the dust removed surface 22b on the downstream side of the filter 22 is upstream. And is reused as a new filtration area surface 22a. This eliminates the need for cleaning the filter 22 for a long period of time and reduces the work required to replace the filter 22. In addition, since the circulating air in the vehicle can always be removed by the clean surface from which dust has been removed, there is an effect that clean air can be always supplied into the vehicle 1.

  In addition, the dust removing device 20 does not need complicated cleaning, and can automatically take up and replace the filter 22 as long as a predetermined integration time is set in advance. Can be significantly improved.

  Further, if the filter 22 continues to be used while dust is accumulated, the pressure loss increases and the landscape is lowered, and the performance of the air conditioner is reduced. However, the dust removal device 20 reaches a preset specified integration time. Then, since the filter 22 is rotated and the dust-removed surface 22b becomes a new filtration region surface 22a, such inconvenience can be solved.

  The specified integration time can be set and changed according to the air environment inside the vehicle, and is set according to the speed of dust accumulation on the filter 22 so that the filter 22 is always at an appropriate timing in any vehicle 1. Can be rotated. Therefore, for example, even in the case of the vehicle 1 in which the dust accumulation speed of the filter 22 is fast, if the optimum driving cycle (specified integration time) is set according to the traveling speed, the filtering capacity becomes undesired. It is possible to drive well without deteriorating.

  Further, when the number of winding operations of the filter 22 reaches the number of times of limiting the winding operation corresponding to the life of the filter 22, a message prompting the replacement of the dust removing device 20 is displayed and the automatic operation is stopped. Therefore, the functionality of the dust removing device 20 can be maintained.

  Moreover, since the odor is removed from the air in the vehicle 1 by the deodorizing filter 40 and clean air is supplied into the vehicle 1, a comfortable in-vehicle air environment can be provided. Further, since the deodorizing filter 40 is provided in the air passage after passing through the filter 22, odor removal can be performed more efficiently than in the case where it is provided in the air passage before passing through the filter 22.

  If antibacterial treatment is applied to the inner surfaces of the suction nozzle 31, the dust collecting case 32a, and the case lid 32b, it is possible to prevent the propagation of germs and to be hygienic.

  In the first embodiment, an example is shown in which control is performed to stop the drive shaft 24 by rotating the drive shaft 24 by a predetermined number of rotations based on a signal from the rotation detector 13 that detects the rotation of the driven shaft 25. However, the present invention is not limited thereto. Not a thing. For example, the motor 23 may be driven for a preset time without using the rotation detector 13 so that the number of rotations of the drive shaft 24 becomes a desired number.

  In the first embodiment, the suction nozzle 31 is provided on the drive shaft 24 side. However, the same effect can be obtained by providing the suction nozzle 31 on the driven shaft 25 side or in the vicinity of the idler 26. Furthermore, the vehicle air conditioner 10 referred to in the first embodiment is, for example, an air circulator such as a blower that simply circulates air in addition to a device that performs temperature adjustment such as heating or cooling, or a device that performs dehumidification. Shall also be included.

Embodiment 2. FIG.
FIG. 8 is a schematic side cross-sectional view showing, on an enlarged scale, a suction nozzle 31 portion of an air conditioner dust remover (hereinafter referred to as dust remover 20A) according to Embodiment 2 of the present invention. A dust removing device 20A according to Embodiment 2 of the present invention will be described based on FIG. Note that the basic configuration of the dust removing device 20A according to the second embodiment is the same as the configuration of the dust removing device 20 according to the first embodiment. Further, the second embodiment will be described with a focus on differences from the first embodiment, and the same parts as those of the first embodiment will be denoted by the same reference numerals and the description thereof will be omitted.

  As shown in FIG. 8, in the dust removing device 20 </ b> A, a clearance 50 </ b> A is formed between the opening 31 a and the filter 22. Thereby, the flow of airflow along the surface of the filter 22 is created, and the effect of peeling off dust from the filter 22 is obtained. Therefore, dust can be removed from the filter 22 more efficiently. In addition, the specific dimension of clearance 50A is not specifically limited, What is necessary is just to determine according to the width | variety of the filter 22, the opening area of the opening part 31a, the capability of the electric blower part 33, etc.

Embodiment 3 FIG.
FIG. 9 is a schematic side cross-sectional view showing, on an enlarged scale, a suction nozzle 31 portion of an air conditioner dust remover (hereinafter referred to as dust remover 20B) according to Embodiment 3 of the present invention. Based on FIG. 9, a dust removal apparatus 20B according to Embodiment 3 of the present invention will be described. Note that the basic configuration of the dust removing device 20B according to the third embodiment is the same as the configuration of the dust removing device 20 according to the first embodiment. Further, the third embodiment will be described focusing on differences from the first and second embodiments, and the same parts as those in the first and second embodiments will be denoted by the same reference numerals and the description thereof will be omitted.

  As shown in FIG. 9, in the dust removing device 20 </ b> B, a clearance 50 </ b> B is formed between the opening 31 a and the filter 22. However, the clearance (clearance 50Ba) between the opening end of the opening 31a on the upstream side in the moving direction of the filter 22 and the filter 22 (clearance 50Ba) is the clearance between the opening end of the opening 31a on the downstream side in the moving direction of the filter 22 and the filter 22 (clearance). 50Bb). As a result, the dust accumulated in the filter 22 is reliably introduced into the suction nozzle 31 on the upstream side in the moving direction of the filter 22, while the air velocity is increased on the downstream side in the moving direction of the filter 22 from the filter 22. Dust can be removed more efficiently.

  The specific dimensions of the clearance 50B are not particularly limited, and may be determined according to the width of the filter 22, the opening area of the opening 31a, the capacity of the electric blower 33, and the like. Moreover, clearance 50Ba should just be formed larger than clearance 50Bb, and those specific differences are not specifically limited.

Embodiment 4 FIG.
FIG. 10 is a schematic side cross-sectional view showing, on an enlarged scale, a suction nozzle 31 portion of an air conditioner dust remover (hereinafter referred to as dust remover 20C) according to Embodiment 4 of the present invention. Based on FIG. 10, a dust removing apparatus 20C according to Embodiment 4 of the present invention will be described. The basic configuration of the dust removing apparatus 20C according to the fourth embodiment is the same as the configuration of the dust removing apparatus 20 according to the first embodiment. Further, the fourth embodiment will be described focusing on the differences from the first to third embodiments, and the same parts as those of the first to third embodiments will be denoted by the same reference numerals and the description thereof will be omitted.

  As shown in FIG. 10, in the dust removing device 20C, a part of the opening end of the opening 31a (the opening end on the downstream side in the moving direction of the filter 22 in FIG. 9) is part of the filter 22 (specifically, the dust-removed surface 22b. ) Is extended along the flat part. That is, the opening 31a has a shape along the curved portion of the filter 22 and a shape along a part of the flat portion (the filtration region surface 22a or the dust-removed surface 22b). Thereby, by creating an airflow passing through the filter 22, it is possible to efficiently remove particularly dust clogged in the joints of the filter 22.

  In addition, the length dimension of a part of the opening end of the opening 31a is not particularly limited, and may be determined according to the width of the filter 22, the opening area of the opening 31a, the capacity of the electric blower 33, and the like. In FIG. 10, the clearance 50A described in the second embodiment is illustrated. However, the present invention is not limited to this, and the clearance 50B described in the third embodiment may be provided.

Embodiment 5 FIG.
FIG. 11 is a schematic horizontal cross-sectional view showing, on an enlarged scale, a suction nozzle 31 portion of an air conditioner dust remover (hereinafter referred to as dust remover 20D) according to Embodiment 5 of the present invention. Based on FIG. 11, a dust removal apparatus 20D according to Embodiment 5 of the present invention will be described. Note that the basic configuration of the dust removing device 20D according to the fifth embodiment is the same as the configuration of the dust removing device 20 according to the first embodiment. In the fifth embodiment, the differences from the first to fourth embodiments will be mainly described, and the same parts as those in the first to fourth embodiments will be denoted by the same reference numerals and the description thereof will be omitted.

  As shown in FIG. 11, in the dust removing device 20 </ b> D, a plurality of grooves 51 having a depth in a direction different from the central axis direction of the drive shaft 24 are formed on the surface of the drive shaft 24. Thereby, while increasing the degree of vacuum in the suction nozzle 31, it is possible to create an airflow passing through the filter 22, and it is possible to more efficiently remove dust clogged on the front and back surfaces of the filter 22 and the joints. It becomes.

  When the suction nozzle 31 is disposed on the driven shaft 25 side, the groove 51 may be formed on the surface of the driven shaft 25. The specific dimensions such as the number, depth, and width of the grooves 51 are not particularly limited. The length of the drive shaft 24, the diameter of the drive shaft 24, the width of the filter 22, the opening area of the opening 31a, What is necessary is just to determine according to the capability of the electric blower part 33, etc. Further, FIG. 11 illustrates the clearance 50A described in the second embodiment, but the present invention is not limited to this, and the clearance 50B described in the third embodiment may be provided. Furthermore, as described with reference to FIG. 9, a part of the opening end of the opening 31 a may be shaped along the flat portion of the filter 22.

  DESCRIPTION OF SYMBOLS 1 Vehicle, 2 Ceiling, 2a Ceiling inlet, 2b Ceiling exhaust, 3 Decoration panel, 3a Car inlet, 3b Car exhaust, 3c Car auxiliary exhaust, 10 Vehicle air conditioner, 11 Controller, 12 Mounting frame , 12a opening, 13 rotation detector, 20 dust removal device, 20A dust removal device, 20B dust removal device, 20C dust removal device, 20D dust removal device, 20a air intake port, 20b exhaust port, 21 housing, 22 filter, 22a filtration region surface, 22b Dust-removed surface, 23 motor, 24 drive shaft, 25 driven shaft, 26 idler, 30 dust removal mechanism, 31 suction nozzle, 31a opening, 31c paper pack, 32 dust collection portion, 32a dust collection case, 32b case lid 32c Paper pack, 33 Electric blower section, 33a Electric blower, 33b Electric blower case, 33c Rubber cushion, after 33d rubber cushion, 33e electric blower outlet, 40 deodorizing filter, 41 timing belt, 50A clearance, 50B clearance, 50Ba clearance, 50Bb clearance 51 grooves.

Claims (4)

In the dust remover for the air conditioner, which is installed upstream of the air inlet of the air conditioner and removes dust from the intake air,
A drive shaft driven by a motor;
A driven shaft that is rotated by following the drive shaft;
An endless belt-like filter body that is spanned between the drive shaft and the driven shaft and is movable by rotation of the drive shaft;
A suction nozzle having an opening formed at the tip of the filter body across the width direction of the filter body, with the width dimension of the filter body in the direction perpendicular to the direction of movement of the filter body being maximized;
An electric blower for applying suction to the suction nozzle;
With
The suction nozzle is
At least a portion of the opening is disposed to face the drive shaft or the driven shaft ;
Forming a clearance between the opening and the filter body;
The clearance between the opening end of the opening on the upstream side in the movement direction of the filter body and the filter body is defined as the clearance between the opening end of the opening on the downstream side in the movement direction of the filter body and the filter body. The dust removing device for an air conditioner characterized by being larger than the above . The dust removing device for an air conditioner according to claim 1 , wherein a part of the opening end of the opening extends along the flat portion of the filter body. In at least one surface of the drive shaft and the driven shaft, according to claim 1 or 2, characterized by forming a plurality of grooves having a depth in a direction different from the central axis of the drive shaft or the driven shaft A dust remover for an air conditioner described in 1. An air conditioner comprising the dust remover for an air conditioner according to any one of claims 1 to 3 .

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