WO2008047662A1

WO2008047662A1 - Air conditioner with filter cleaning unit

Info

Publication number: WO2008047662A1
Application number: PCT/JP2007/069819
Authority: WO
Inventors: Atsushi Matsubara
Original assignee: Daikin Industries, Ltd.
Priority date: 2006-10-19
Filing date: 2007-10-11
Publication date: 2008-04-24
Also published as: EP2085712A4; EP2085712A1; KR20090042315A; CN101517331A; KR101044509B1; CN101517331B; JP2008101846A; JP4251209B2

Abstract

An air conditioner with a filter cleaning unit having a body casing (3), a heat exchanger (4) provided in the middle of an air path in the body casing (3), a filter (5) to be placed in correspondence with a primary-side air suction surface of the heat exchanger (4), a filter drive section (72) to which the filter (5) is attached and moving the filter (5) along the air suction surface of the heat exchanger (4), a filter detection section (LS) placed at a predetermined position on the end side of a filter movement route (12a, 12b), a filter cleaning unit (6) for cleaning, in the middle of the filter movement route, the filter surface of the filter (5), and a fan (70) placed on the secondary side of the heat exchanger (4). Because the position of installation of the filter (5) on the filter drive section can be displaced depending on the manner of the installation, the filter detection section (LS) is placed at a position corrected by the displacement amount and moved from the end P0 of the filter movement route toward the inside of the route.

Description

Specification

Air conditioner with filter cleaning unit

Technical field

The invention of this application relates to a configuration of an air conditioner with a filter cleaning unit in which a filter moves.

Background art

[0002] A filter for an indoor unit for an air conditioner, generally called a pre-filter, is clogged with dust or the like and needs immediate frequent maintenance. However, cleaning the filter is quite troublesome, such as removing the filter by removing the power from the indoor unit and sucking the dust from the mesh part with a vacuum cleaner.

[0003] For this purpose, the operation time is integrated to determine when the filter cleaning time has come, and when it is necessary to clean, a maintenance instruction (for example, LED lighting) that prompts the user to clean the filter. It was also done! /

[0004] However, even if such a maintenance instruction is issued, there are many cases where cleaning is not actually performed. If the operation is continued with the filter being clogged, the pressure loss will increase and the fan motor load will increase. Increases power consumption. In addition, air suction noise increases.

[0005] Therefore, recently, a filter cleaning unit has been incorporated into the indoor unit itself, and dust adhered to the filter automatically in response to a stoppage of operation or a remote control operation during an operation suspension period. A filter cleaning unit is provided that can remove the dust etc. and discharge it to the outside through the suction nozzle and exhaust pipe, or a dust cleaning box to store the dust removed in the dust box. Come on! /

[0006] In such a filter cleaning unit, for example, the dust suction nozzle portion that scrapes off the dust of the filter and sucks the dust that has been scraped moves to the right and left along the filter surface. Attach a dust box with a brush for dust removal at the bottom, move the dust box up and down along the filter, and scrape the dust into the dust box with a brush. (The former is known from Patent Document 1 (Japanese Patent Laid-Open No. 2006-112699 (Specification, page 16, Fig. 1-11)). Is known as a product).

[0007] Also, unlike such a dust suction unit or dust box unit that moves along the filter surface, for example, the filter itself is a flexible structure that is flat and bendable. The filter is supported by the filter driving means and the filter support means so as to be able to reciprocate from the front surface of the air conditioner main body along the heat exchanger intake surface of the upper surface, and dust corresponding to the middle of the moving position of the filter. A filter cleaning unit has also been proposed in which a dust box equipped with a scraping brush can be installed to remove and store filter dust without moving the dust box.

V (see Patent Document 2 (Japanese Patent Laid-Open No. 2001-99479 (Specifications page 1-4, FIG. 12)) as a known document)).

Disclosure of the invention

Problems to be solved by the invention

[0008] The inventor of this application, in the case where the filter can be moved in this way before this application, the filter is further moved along the entire intake surface from the front side to the upper side of the heat exchanger. A filter winding / rewinding mechanism is provided that supports the reciprocating movement and winds almost the whole from the lower end side in a conveyor-like manner, and rewinds it to a single sheet state, corresponding to the winding position of the filter winding / rewinding mechanism. By installing a dust box equipped with a scraping brush for dust, dust, etc., the filter can be rolled up and moved automatically without moving the brush and dust box so that the filter can remove dust and store it automatically. (See Patent Document 3 (Japanese Patent Application No. 2 006-25942 (Specifications 1-6, Fig. 1-7)) as a non-known prior art document)).

[0009] By the way, in the case of an air conditioner having an automatic cleaning function of the type that drives a filter as described above, when the filter is attached to the filter driving means (when it is first attached after being removed), Structurally with the filter attached due to ease (roughness of the engaging part between the filter and drive means), the type of drive mechanism of the drive means, and restrictions on the structure (drive amount accuracy) It is necessary to have a certain margin (a margin in size). In such a case, a predetermined amount of deviation (amount of deviation from a planned arrival position on the designed structure) inevitably occurs at the filter mounting position of the user. Therefore, finole If a filter detection means (such as a limit switch) is provided corresponding to a normal normal arrival position, the filter detection means (such as a limit switch) may be different depending on how the filter is attached to the user's drive means. Case S that erroneously detects the filter installation status occurs.

[0010] As a result, in the conventional configuration, the filter detection control logic that always detects the presence or absence of the filter must be executed after the filter is installed, and there is a problem that it takes extra time S to start actual cleaning. there were.

The invention of this application has been made to solve such a problem, and has a filter cleaning unit having a predetermined filter moving system path provided corresponding to the intake surface of the heat exchanger or the like. In an air conditioner, a filter cleaner that solves the above-mentioned conventional problem by providing a filter detection unit at a position that is corrected in accordance with the amount of displacement of the mounting position that can occur due to the mounting condition of the user described above for structural reasons. The purpose is to provide an air conditioner with a unit.

Means for solving the problem

In order to achieve the above object, the invention of this application comprises the following problem solving means.

[0013] An air conditioner with a filter cleaning unit of the present invention includes:

A body casing having an air inlet and an air outlet;

A heat exchanger disposed in the middle of the air passage leading to the air suction loca air outlet in the main body casing;

A filter to be disposed corresponding to the primary air suction surface of the heat exchanger, and the filter is attached, and the filter is moved through a filter moving path along the air suction surface of the heat exchanger. A filter driving unit;

A filter detection unit provided at a predetermined position on the end side of the filter movement path, a filter cleaning unit for cleaning the filter surface of the filter in the middle of the filter movement path,

A fan disposed on the secondary side of the heat exchanger,

The filter detector is attached to the filter drive unit with respect to the filter drive unit. Therefore, in accordance with the amount of displacement of the mounting position that can occur, the direction of force from the end of the filter movement path to the inside of the filter movement path is corrected, and the position is corrected by the amount of deviation. It is ί 毁.

[0014] In the air conditioner with a filter cleaning unit of the present invention, the filter detection unit that detects whether or not the filter is mounted in a proper position set in advance! Corresponding to the amount of displacement of the attachment position that may occur due to the degree of attachment of the filter, it is provided at a position that is corrected by the amount of displacement from the end of the filter movement path toward the inside of the filter movement path. In other words, for structural reasons such as ease of installation, the filter detection unit is installed at a position that is shifted in a direction that eliminates the amount of deviation by a dimension that corresponds to the amount of deviation caused by the user's installation. Like to do. As a result, the amount of deviation caused by the user's filter mounting condition is offset, and the filter can be reliably detected when the filter is mounted.

[0015] Therefore, there is no erroneous detection of the filter mounting state depending on the user's filter mounting condition as in the prior art, and the filter detection logic after the filter is mounted can be simplified.

[0016] Further, since the filter detection logic can be simplified as described above, the time until the start of cleaning is shortened.

[0017] An air conditioner with a filter cleaning unit according to an embodiment is characterized in that the filter detection unit is also configured to detect the movement state when the filter is moved by the filter drive unit.

[0018] According to such a configuration, the filter detection unit can accurately detect the moving state of the filter through the detection port.

[0019] In the air conditioner with a filter cleaning unit according to one embodiment, when the filter is moved by the filter driving unit, the filter detection unit detects whether or not the filter is detected by the filter detection unit up to the position where the filter detection unit is installed. On the other hand, it is characterized in that it is configured to determine whether or not the pre-filter can be moved according to the drive amount of the filter drive unit after the filter detection at the installation position of the filter detection unit while performing the moveability determination.

[0020] According to such a configuration, as described above, the filter according to the user's filter mounting condition is used. This eliminates false detection of filter attachment, simplifies the detection logic after the filter is installed, and shortens the time to start cleaning. In addition, since the filter detection up to the detection position by the filter detection unit and the filter detection during the subsequent movement are performed by two different means, the filter including the failure of the filter detection unit and the filter movement failure It is possible to accurately and reliably detect abnormalities.

[0021] In the air conditioner with a filter cleaning unit of one embodiment, in the check of the filter mounting state at the start of the filter cleaning operation by the filter cleaning unit, the filter detection signal from the filter detection unit is output after the filter is attached. If there is, only the abnormality detection and origin correction control of the filter detection unit is performed, while if there is no filter installation detection signal by the filter detection unit, the filter is installed in addition to the abnormality detection and origin correction control of the filter detection unit. It is configured to detect the presence or absence of! /, And is characterized by! /.

[0022] According to such a configuration, even when there is no signal for attaching the prefilter 5 by the filter detection unit LS, in addition to the abnormality detection of the filter detection unit LS and the origin correction control, the presence or absence of the filter is also checked. It can be detected.

The invention's effect

As described above, according to the invention of this application, the erroneous detection of the filter mounting state due to the difference in the filter mounting state of the user as in the conventional case is eliminated, and the finoletor detection logic after the filter mounting is simplified. In addition, since the detection logic can be simplified, the time required to start cleaning the filter can inevitably be shortened.

Brief Description of Drawings

FIG. 1 is a cross-sectional view showing an overall configuration of an air conditioner with a filter cleaning unit according to the best embodiment of the invention of this application.

FIG. 2 is a perspective view of the air conditioner in a state where exterior parts such as a full cover and an upper air suction grill are removed.

FIG. 3 is an enlarged perspective view of the main part showing the relationship between the prefilter and the prefilter winding / unwinding mechanism of the air conditioner.

[Fig.4] Pre-filter and pre-filter support member, filter holder, seal plate, pre-filter winding / rewinding mechanism, dust scrub brush, dust box phase of the air conditioner It is an expanded sectional view of the pre-filter insertion or extraction state which shows a mutual relationship and a structure.

[Fig. 5] Prefilter and prefilter support member, filter retainer, seal plate, prefilter winding / rewinding mechanism, dust filter brush, dust box, and other prefilters showing the relationship and structure of the air conditioner It is an expanded sectional view of a stretched state.

[Fig. 6] Expansion of pre-filter entrainment state showing the relationship and structure between the pre-filter and pre-filter support member, filter retainer, pre-filter entraining and unwinding mechanism, dust brush, and dust box of the air conditioner It is sectional drawing.

FIG. 7 is an enlarged cross-sectional view of the main part viewed from the side force showing the relationship between the prefilter support member, the heat exchanger, and the seal plate in the air conditioner.

FIG. 8 is an enlarged cross-sectional view of the main part showing the relationship between the prefilter support member, prefilter, and prefilter presser of the air conditioner.

FIG. 9 is a block diagram showing a configuration of a control circuit of the air conditioner.

FIG. 10 is an explanatory diagram showing the relationship between the pre-filter drive position of the air conditioner and “cleaning operation”.

FIG. 11 is an explanatory diagram showing the relationship between the normal position and the maximum position of the prefilter of the air conditioner.

FIG. 12 is an explanatory diagram showing a configuration of a prefilter detection system of the air conditioner.

FIG. 13 is a time chart corresponding to the origin correction control operation of the air conditioner.

[Figure 14] Check the time chart showing the details of the forward movement in the “cleaning operation” control of the air conditioner.

[Fig.15] Check the time chart showing the details of the return path operation in the “cleaning operation” control of the air conditioner.

BEST MODE FOR CARRYING OUT THE INVENTION

FIGS. 1 to 15 show the configuration and operation of an air conditioner A with a filter cleaning unit according to the best embodiment of the invention of this application, and the contents of filter cleaning control by the filter cleaning unit.

[0026] (1) Overall configuration and operation of the air conditioner A

This air conditioner A has an air inlet 1 on the upper surface side and an air outlet 2 on the lower front side. The main body casing 3, the cross fin type heat exchanger (evaporator or condenser) 4 disposed in the main body casing 3, and the primary air suction surface of the heat exchanger 4 are provided. A pre-filter 5 having a mesh structure, a filter support member 7 that supports the pre-filter 5 so as to be movable in the vertical and horizontal directions along the intake surface of the heat exchanger 4 and the front-rear and horizontal directions, and the pre-filter 5 is wound around the conveyor belt, and the filter surface (mesh surface) is cleaned (scraping off dust etc. by brushing), and the secondary side of the heat exchanger 4 A crossflow type multi-blade fan 70 is provided.

[0027] The main body casing 3 is provided with the heat exchanger 4, the pre-filter 5, the filter support member 7, the multi-blade fan 70, and the like. Cover the air suction grille 3b covering the front side and the front side air suction space la of the heat exchanger 4 so that it can be opened and closed.

[0028] The heat exchanger 4 is configured as a so-called lambda-type heat exchanger, and has a front side heat exchange part 4a extending in a U-shape in the vertical direction and an upper end part of the front side heat exchange part 4a. The rear side heat exchanger 4b is bent obliquely downward from the rear side and located above the back side of the main body casing 3. As a result, a sufficient amount of airflow can efficiently pass through the wide area air suction passage formed from the upper surface side air suction port 1 portion of the main body casing 3 to the front side air suction space la portion. It has become.

[0029] On the other hand, reference numeral 8a is a first drain pan that receives the drain from the front heat exchange section 4a, 8b is a second drain pan that receives the drain from the rear heat exchange section 4b, and 9 is the multi-blade fan. Scroll structure air blowing passage that guides the air flow blown out from the impeller part 70a of the 70 in the two directions of the air blowout port, 10 prevents the reverse flow of the air flow blown out from the impeller part 70a of the multi-blade fan 70 A tongue 11 for adjusting the airflow direction is a wind direction adjusting mechanism including a vertical blade and a horizontal blade disposed in the upstream portion of the air outlet 2.

[0030] The front cover 3c is supported on both sides of the main casing 3 via a predetermined movable guide mechanism. For example, as shown in FIG. 1, the front cover 3c is close to the front side of the front side heat exchange part 4a and blinds the front side of the front side heat exchange part 4a, and downward from the closed state. An open state of a forward tilt state in which the upper end side is pushed forward while moving It can be opened and closed between two states. The front cover 3c is configured to open the front surface of the front heat exchange section 4a in the open state.

[0031] Then, in the above-described open state of the front cover 3c, the air flow sucked from the upper surface side air suction port 1 and the front side air suction space la of the main body casing 3 is converted into the heat exchanger 4 (heat When passing through the intersections 4a and 4b), there is cooling! /, Which is heated to become conditioned air having a desired temperature and humidity, and the impeller portion 70a portion of the multi-blade fan 70 with respect to its rotating shaft 70b. After flowing perpendicularly, the air is blown into the room from the air outlet 2 through the air outlet passage 9 of the scroll structure.

[0032] The impeller portion 70a of the multiblade fan 70 is parallel to the rotary shaft 70b on the outer peripheral edge of a plurality of circular support plates arranged in parallel at a predetermined interval in the direction of the rotary shaft 70b. In this way, a large number of blades are arranged at a predetermined blade angle.

[0033] (2) Configuration of the pre-filter 5 as a dust collecting unit

For example, as shown in FIG. 3, the pre-filter 5 is a flat lattice frame made of a highly flexible synthetic resin that can be freely bent into an arc shape (as a whole, a rectangular shape that is slightly longer in the vertical direction). .. Are formed by stretching mesh members 52, 52,... Having a predetermined mesh diameter between rectangular frame members 51a, 51a '. The outer rectangular frames 51A and 51A on both the left and right sides of the flat rectangular frame 51 are formed wider than the grid-shaped frame members 51a and 51a '. On the back side, convex bodies (engagement pins) 53, 53,... Having a predetermined length projecting in the orthogonal direction at regular intervals in the longitudinal direction are provided.

In the normal state, the pre-filter 5 is reciprocally movable along the entire intake surface from the front surface side to the upper surface side of the lambda heat exchanger 4 as shown in FIGS. Is supported. On the other hand, when cleaning the filter surface, as shown in FIG. 6 from the state of FIG. 5, the entire filter surface from the lower end 5b side of the filter cleaning unit 6 will be described later. It is wound into a conveyor belt. In the middle of the entrainment state, dust or the like is dropped and brushed by the brush 16 to clean the entire filter surface as will be described later.

[0035] (3) Fill that supports the prefilter 5 so as to be movable in the vertical direction and the winding direction Of the support member 7

That is, on the main body casing 3 side, for example, a filter support member 7 for supporting a prefilter as shown in detail in FIG. 8 is provided. This filter support member 7 is located on both the left and right sides of the prefilter 5 and is formed into a shape that conforms to the overall shape of the lambda heat exchanger 4 from the upper surface back plate position to the front lower end position. A pair of left and right frame plates 71, 71 made of synthetic resin having a relatively rigid cross-section and a pair of left and right frame plates 71, 71 are formed on the front surface portion of the lower side portion of the side walls 71a, 71a extending in the vertical direction. Correspondingly provided filter holder 73 with a frame structure and upper and lower corner surface portions that are displaced from the front side portion extending in the vertical direction between the frame plates 71 and 71 to the upper side portion extending in the front-rear direction (horizontal direction) It consists of filter guide members 74a, 74a, 75a, 75a provided at both spatial surface positions. The filter guide members 74a, 74a, 75a, 75a are respectively provided with two parallel support members 74, 74, 75, 7 5 installed between the side wall portions 71a, 71a of the pair of left and right frame plates 71, 71, respectively. Are supported in parallel with each other with the plate surfaces orthogonal to each other. As a result, the filter guide members 74a, 74a, 75a, 75a deflect the intermediate portion of the above-described prefilter 5 with the end surfaces of the plate portions having rounded surfaces at the upper and lower ends thereof as guide surfaces extending in the filter moving direction. It is supported so that it can be guided smoothly in the vertical and longitudinal directions.

Each of these filter guide members 74a, 74a, 75a, 75a supports and guides corresponding to the intermediate frame members 51a, 51a extending in the vertical direction of the prefilter 5 as is apparent from FIG. 8, for example. It is like that.

[0037] The filter holder 73 can be opened and closed corresponding to the front surface portion of the filter support member 7 corresponding to the front heat exchange portion 4a of the heat exchanger 4. The filter retainer 73 is supported by pivotally supporting the upper end side frame plate 73b portion of the frame plate portion on the upper front end portions of the left and right frame plates 71, 71 of the filter support member 7 via latch mechanisms 76, 76. The lower end side thereof can be rotated in the vertical direction.

[0038] The left and right side frame plates 73a, 73a of the front and rear frame wall portions forming the guide grooves of the prefilter 5 of the left and right frame plates 71, 71 of the filter support member 7 are formed. It also serves as the front side frame wall (71a). As a result, the frame plates 73a and 73a are described below. The first filter guide groove (vertical filter) extending in the vertical direction between the filter winding and rewinding mechanisms 72 and 72 and the toothed belt 72c constituting the central operating mechanism of the filter cleaning unit 6 (Moving space) 12a is formed.

[0039] Between the left and right frame plates 73a and 73a, the vertical guides 51a and 51a of the pre-finoleter 5 are slid in correspondence with the finer guides 75a and 75ai on the filter support member 7 side. Presser members 73c and 73c that are movably pressed are provided.

[0040] (4) Configuration of the filter cleaning unit 6 that brushes the filter surface of the pre-filter 5 On the other hand, the filter cleaning unit 6 is a front surface portion of the heat exchanger 4 (a front surface portion of the front heat exchange portion 4a). A pair of left and right filter winding unwinding mechanisms 72, 72 provided on both sides, and a rotor structure provided corresponding to (in front of) the pre-filter winding start position of the filter winding unwinding mechanisms 72, 72 It consists of a dust brush 16 and a dust box 17. The filter winding / rewinding mechanism 72, 72 winds the prefilter 5 from the original mounting state (expanded state) as shown in FIG. 5, for example, into an annular state as shown in FIG. Rewind to the original stretched state shown in Fig. 5. The dust brush 16 is scraped off by brushing dust or the like adhering to the mesh members 52, 52... Of the pre-filter 5. The dust box 17 stores dust and the like that has been scraped off by the brush 16.

The dust dropping brush 16 and the dust box 17 are provided across the left and right ends of the heat exchanger 4.

[0042] The pair of left and right filter winding and unwinding mechanisms 72, 72 each have a lower large-diameter drive side first toothed pulley 72a and a predetermined upper side from the first toothed pulley 72a. A driven toothed second toothed pulley 72b having a smaller diameter than the first toothed pulley 72a provided at a distance, and the first and second toothed pulleys 72a, 72b are engaged with each other. It has the same force as the toothed belt 72c. As shown in FIG. 3, for example, as shown in FIG. 3, the above-described convex bodies (engagement pins) 53, 53 on the back side of the left and right outer frames 51A, 51A of the prefilter 5 53, 53 ··· are engaged holes (elongate holes) 13, 13 ··· are provided at equal intervals corresponding to the longitudinal direction.

[0043] This toothed belt 72c is, for example, the first toothed belt by the pulse motor Ml (M2) of FIG. The pulley 72a is driven to rotate accurately (stepping drive) in both forward and reverse directions. For example, when the toothed belt 72c is driven in the forward rotation (right rotation) direction, the prefilter 5 is necessary for the expansion of the prefilter 5 via the first and second guide grooves 12a and 12b. It is mounted properly up to the final setting position (upper end). On the other hand, when the toothed belt 72c is driven in the reverse direction (counterclockwise rotation), the substantially entire prefilter 5 is placed on the outer peripheral surface of the toothed belt 72c as shown in FIG. Get involved. At the time of the reverse drive, the prefilter 5 is positioned between the toothed belt 72c and the lower surface of the first guide groove 12a along the pulley surface of the first toothed pulley 72a. The first guide plate 14a, the second guide plate 14b, which are provided at a predetermined rotation angle width while maintaining the clearance necessary for passing the outer frames 51A, 51A, and the pulley surface, A third guide plate 14c, which is long in the vertical direction on the back side along the toothed belt 72c in the pulley direction of the second toothed pulley 72b, is located on the second toothed pulley 72b on the upper end side and has its own weight. As a result, a guide action such as a fourth guide plate 15a (rotating support shaft 15c) that presses the prefilter curved surface portion in which the same portion is wound is used.

[0044] When the pre-filter 5 is rolled from the state shown in FIG. 5 to the state shown in FIG. 6, the first toothed pulley 72a is below (the first guide plate 14a and a predetermined rotation angle behind it). Between the second guide plate 14b and the second guide plate 14b). Scrub off the dust, etc. (state shown in Fig. 6). The dust scraping brush 16 is located in the dust box 17 and provided coaxially. The dust, dust, etc. that are scraped off are securely stored in the dust box 17. The dust box 17 is detachably attached to the housing portion 3a of the main body casing 3, and is periodically removed (or every time a predetermined operation time elapses) to remove the dust inside. Can be discarded and the brush can be cleaned.

When the lower end side of the filter retainer 73 is disengaged from the filter support member 7 and the lower end side is rotated forward by a predetermined angle as shown in FIG. 4, for example, the lower end of the prefilter 5 The presser state for the toothed belt 72c on the 5b side is released. By removing the convex body 53, 53 ... on the back side of the pre-filter 5 from the engagement hole 13, 13 ... on the toothed belt 72c (Fig. 4) Can be removed from the filter support member 7 (see the direction of arrow a).

[0046] In this case, the filter retainer 73 is pivotally supported by the filter support member 7 via the latch mechanisms 76, 76, so that the open state at a desired angle as shown in Fig. 4 can be maintained. It is possible to remove the prefilter 5 as well as the reverse insertion work.

[0047] The prefilter 5 is mounted in the filter support member 7 as follows.

For example, as shown by the arrow b in FIG. 4, the upper end 5a side of the prefilter 5 is inserted from the lower first guide groove 12a toward the upper end side second guide groove 12b. At this time, an arcuate filter guide 15b is further formed at the upper end of the fourth guide plate 15a described above, and guides the prefilter 5 when inserted into the upper side. After that, the convex portions 53, 53... From the middle part side to the lower surface 5b side rear surface (outer frame 51A, 51A rear surface) are, for example, as shown by phantom lines in FIG. , The toothed benolet 72c (72c, 72c) spanned between the second toothed pulleys 72a, 72b (a pair of left and right) is inserted into the respective engagement holes 13, 13. Engage. Then, the filter retainer 73 is closed to the original state in the engaged state. The mounting is performed in this way.

[0048] After that, the front cover 3c described above is engaged with the front side movable guide mechanism portion of the main body casing 3, and a desired filter operation switch is inserted. Then, the lower end 5b side of the pre-filter 5 is temporarily reversed by a predetermined dimension and is caught between the first toothed pulley 72a side first and second guide plates 14a and 14b, and then forwardly rotated. The upper 5a side is fed out by the proper amount of dimension, and finally stops at the proper set position. The arrival at the set position is detected by the filter detection unit LS including a limit switch provided at a predetermined position on the terminal end side of the pre-filter moving system path, similarly to the case where the “cleaning operation” described later is stopped. .

As a result, the prefilter 5 is mounted in the original stretched state as shown in FIG.

[0050] The filter winding / rewinding mechanisms 72 and 72 including the first and second toothed pulleys 72a and 72b and the toothed belt 72c described above are divided into two parts, for example, as shown in FIG. A pair of left and right filter support members 7, 7 and a pair of left and right filter support members 7, 7 A pair of left and right is provided for each pre-filter 5,5. The left and right paired first toothed pulleys 72a, 72a, 72a, 72a of each pair of left and right filter winding / rewinding mechanisms 72, 72, 72, 72 have the same first tooth. The elastic pulleys 77 and 77 for backup having substantially the same diameter as the attached pulleys 72a, 72a, 72a and 72a are provided in a state of being coaxially continuous with each other.

[0051] Further, in the present embodiment, as shown in FIGS. 2 and 8, for example, the upper end side of the filter support member 7 is located below the upper end side of the predetermined width portion extending in the front-rear direction between the frame plates 71, 71. Cross section of the bent part of the lambda type heat exchanger 4 from above to the front side corner part V-shaped air passage part (valley part) Cross-section matching the shape of 4c (side face) V-shaped heat exchanger top seal The seal plate 20 is integrally provided. As a result, at the same time when the filter support member 7 is attached to the main casing 3, the folded portion of the lambda heat exchanger 4 is attached by the same seat plate 20 (the seat portion 20 a, the support frame portion 20 b, and the mounting integrated portion 20 c). The V-shaped air passage (valley) is configured to seal 4c!

[0052] (5) Configuration of control circuit section

In the casing 3a of the main body casing 3, for example, as shown in FIG. 2, an electrical box 18 is installed on the side of the heat exchanger 4 described above, and in the electrical box 18, Various control units as shown in Fig. 9 are provided with a microcomputer control unit at the center.

[0053] The control unit is broadly divided into a force with the indoor unit control unit 80 and the outdoor unit control unit 83 connected to each other. The indoor unit control unit 80 is further provided with an air conditioning mechanism control unit 81 and a cleaning mechanism control unit 82 1S, and the outdoor unit control unit 83 is provided with a humidification / ventilation control unit 84, respectively.

The air conditioning mechanism control unit 81 includes a front panel drive unit 81a, a horizontal flap drive unit 82a, a vertical flap drive unit 81c, and a fan drive unit 81d. The cleaning mechanism control unit 82 includes a rotary brush drive unit 82a, a filter drive unit 82b, a filter detection unit 82c, and a dust box detection unit 82d.

[0055] The indoor unit control unit 80 includes an air conditioning operation control unit 80a, a cleaning mechanism determination unit 80b, a cleaning mechanism control unit 80c, a cleaning mechanism initialization processing unit 80d, a filter cleaning time determination unit 80e, and the like. . Thus, the indoor unit control unit 80 controls the air conditioning mechanism control unit 81, the cleaning mechanism control unit 82, the outdoor unit control unit 83, and the like. [0056] The indoor unit control unit 80 is also provided with a main body side operation switch 85, a display unit 86, a light receiving unit 87b of the remote controller 87a, and the like.

[0057] The filter detection unit 82c of the cleaning mechanism control unit 82 is configured by a filter detection unit LS made of a limit switch as described below, for example. As a result, it is possible to appropriately detect and determine whether or not the mounting state when the pre-filter 5 is mounted by the user and the filter mounting state when the filter is rewound by the filter winding / rewinding mechanisms 72 and 72 as described above.

[0058] (6) Cleansing operation control

In the air conditioner A of the present embodiment configured as described above, for example, in the extended state of the pre-filter 5 as shown in FIG. 10 (a) (normal position: corresponding to the state of FIG. 5 described above), The rotational drive of the filter winding / rewinding mechanisms 72, 72 and the dust fall-off brush 16 is started. Then, as shown in FIG. 10B, the prefilter 5 is wound on the toothed belts 72c and 72c of the filter winding and unwinding mechanisms 72 and 72, and cleaning of the prefilter 5 is started. In the following explanation of “cleaning operation control”, the movement of the prefilter 5 in the winding direction is defined as the forward movement, and the movement in the reverse winding direction is defined as the backward movement.

[0059] Finally, as shown in FIG. 10 (c), the whole prefilter 5 (the whole from the lower end 5b side to the upper end 5a side) is wound (in the forward direction of the prefilter 5). Cleaning of the pre-filter 5 is completed at the maximum movement position P). Then, in the direction of extension shown in Fig. 10 (a)

Four

The movement is the above-mentioned return path movement.

[0060] A filter detection unit LS including the above-described limit switch is provided at a predetermined position on the end (upper end) side on the prefilter moving paths 12a and 12b. Therefore, when the upper end 5a of the prefilter 5 is detected by the filter detection unit LS, the prefilter 5 is moved from the state shown in FIG. 10 (c) to the state shown in FIG. 10 (a). You can see that it has returned to. this

0

At this time, the filter winding / rewinding mechanism 72, 72 and dust fallen and the driving of the brush 16 is stopped.

[0061] (7) Problems when attaching prefilter 5 to toothed berets 72c and 72c of filter rewinding mechanism 72 and 72 By the way, when the prefilter 5 is driven using the filter winding / rewinding mechanism 72, 72 as described above, when the filter is attached to the toothed belts 72c, 72c of the filter winding / rewinding mechanism 72, 72 (Refer to Fig. 3 for the first installation after removing it once.) Due to the ease of filter installation work and the difference in drive accuracy as drive means, there is a structural structure with the pre-filter 5 attached. It is necessary to have a margin (a margin in dimensions). For example, as shown in FIG. 3, the shape of the engagement holes 13, 13... 13, 13 ... on the toothed belts 72c, 72c side is a long hole, and the convex body 53, 53 · Toothed belt 7 Pre-filter for easy engagement with 2c, 72c 5-side convex 53, 53 · 53, 53 ··· Toothed belt 72c, 72c engagement hole 13 , 13 ··· Roughness of the engaging part may be required. In such a case, there is inevitably a predetermined amount of deviation in the filter movement path direction at the user's filter mounting position (an amount of deviation from the planned contact position on the designed structure). In an extreme case, in FIG. 3, there is a difference between the engagement from the belt-side engagement holes 13 and 13 at the lowermost end or the force from the upper engagement holes 13 and 13 as shown in the figure. Arise

[0062] Therefore, if the filter detection unit (limit switch) LS is provided corresponding to the normal normal arrival position (position per structure) P shown in FIG.

0

Depending on the installation condition, there may be cases where the filter detection unit (limit switch) LS described above erroneously detects the attachment state of the prefilter 5.

[0063] As a result, as described above, in the configuration of the conventional filter driving type filter cleaning unit, after the filter is attached, a filter detection control port that always detects the presence or absence of the filter is executed, and then the filter cleaning is performed. The cleaning control of the filter that driven the unit had to be performed, and there was a problem that it took extra time until the actual cleaning started.

Therefore, in this embodiment, in order to solve such a problem, for example, as shown in FIGS. 11 (a) and 11 (b) and FIG. Corresponding to the amount of displacement of the filter mounting position that can occur, the end of the filter movement system path indicated by the first and second guide grooves 12a, 12b above the inside of this filter movement system path (filter in FIG. 2). (Mounting position) The filter detection unit LS Is provided. In other words, the filter contact position (normal arrival position: origin position) P force, etc.

0 The filter detection unit LS is installed at the position moved (offset) in the direction of displacement elimination by the amount of deviation. This offsets the amount of misalignment caused by the user's mounting condition of the prefilter 5 so that the prefilter 5 can be reliably detected when the prefilter 5 is mounted. In FIG. 2, the filter position correction amount a indicates the offset amount from the position per structure of the filter. Further, the limit switch confirmation moving amount b indicates the moving amount that the limit switch from the normal position is surely “mounted → not mounted”. The additional feed amount c indicates the maximum travel correction during the return trip!

[0065] Therefore, according to this configuration, there is no erroneous detection of the prefilter attachment state due to the user's prefilter attachment condition as in the prior art, and the ability to simplify the finoletor losing / closing logic after the prefilter attachment. S can.

[0066] Since the filter detection logic can be simplified as described above, the time until the start of cleaning is shortened.

[0067] The positional deviation when the filter is mounted is corrected to the origin by the origin correction control as shown in the time chart of FIG. 13, for example, and set to the correct normal position (origin position) P.

0. In addition, the same origin correction operation simultaneously detects a failure of the filter detection unit LS.

In other words, in this control, the pre-filter 5 is not positioned at the normal position (origin position) Ρ shown in FIG. Maximum position Ρ

0 1 (direction 4)) Pre-filter 5 installation position (detection position) Beyond P, it is detected that pre-filter 5 is completely unattached. ).

Three

[0069] At this time, if the filter detection unit LS is not in the non-attachment detection operation (no detection signal), the filter detection unit LS is assumed to have a failure force or a pre-filter 5 movement failure. Is determined.

[0070] Further, the prefilter 5 is reversed and moved to the home position P in the backward direction,

0

When the filter detection unit LS changes from the “non-attached” detection state to the “attached” state detection, the control unit further operates and stops the above-mentioned number of nozzles for the filter offset distance a. In this way, even if the non-mounting confirmation moving amount b is moved backward by b after the pre-filter 5 is reversed, If it is not in the “arrival” state, it is determined that the filter is abnormal due to the movement failure of the prefilter 5 or the failure of the filter detection unit LS.

[0071] Note that FT (time) in FIG. 13 reliably stops or reverses the stepping motor M (M).

1 2

The two-phase excitation time is shown.

Note that FIG. 14 is a diagram in which the upper end of the above-described prefilter 5 is at the normal position (origin position) P. FIG.

0

(A) to the maximum travel position P in Fig. 10 (b) during forward drive (filter cleaning

Four

FIG. 15 is a time chart at the time of backward drive for returning the pre-filter 5 to the maximum movement position P force in FIG. 10 (b) to the home position P in FIG. 10 (a). Figure 1

4 0

If the pre-filter 5 does not become “non-attached” even if the distance b is driven in 4, the filter detector LS does not detect the pre-filter 5 even if it is driven only the distance a + c + d in FIG. In each case, an abnormality of the pre-filter 5 is detected. Further, when the detection means of the detection unit 82d of the dust box 17 provided separately during the movement of FIGS. 14 and 15 detects that the filter is not mounted, an abnormality of the dust box 17 is detected. In this way, abnormality detection is possible.

As described above, the configuration of the present embodiment is configured such that the filter detection unit LS also detects the movement state when the prefilter 5 is moved by the filter winding / rewinding mechanisms 72, 72. /!

[0074] According to such a configuration, the moving state of the prefilter 5 itself can be accurately detected by the filter detection unit LS.

[0075] Further, in this configuration, in that case, when the pre-filter 5 is moved by the filter winding / rewinding mechanism 72, 72, the filter detection of the filter detection unit LS is detected up to the installation position of the filter detection unit LS. Whether or not the pre-filter 5 is movable is determined based on the presence or absence of a signal. On the other hand, after detecting the filter at the position where the filter detection unit LS is installed, the drive amount of the filter winding / rewinding mechanism 72, 72 (stepping motor M (M) (Detected by the number of drive pulses)

1 2

It is configured.

[0076] According to such a configuration, as described above, there is no false detection of filter installation due to the user's filter installation condition, the detection logic after filter installation can be simplified, and the time until cleaning starts. Can be shortened. Also, the detection position by the filter detector LS The ability to detect the filter in the filter and the filter during the subsequent movement is detected by two different means, and the filter detection unit failure and the filter 5 failure including the filter movement failure are accurately and reliably detected. It becomes possible.

[0077] Further, as described above, in the present embodiment, the filter detection unit LS is attached after the prefilter 5 is attached after the filter cleaning check at the start of the filter cleaning operation by the filter cleaning unit 6. When there is a filter detection signal by, only the abnormality detection and origin correction control of the filter detection unit LS are performed, and when there is no filter installation detection signal by the filter detection unit LS, abnormality detection and origin of the filter detection unit LS are performed. In addition to correction control, it can also be configured to detect the presence or absence of a filter.

[0078] According to such a configuration, even when there is no attachment signal of the prefilter 5 by the filter detection unit LS, in addition to the abnormality detection of the filter detection unit LS and the origin correction control, the presence or absence of the filter is also checked. It can be detected.

Claims

The scope of the claims

[1] a main casing (3) having an air inlet (1) and an air outlet (2);

A heat exchanger (4) disposed in the middle of the air passage from the air inlet (1) to the air outlet (2) in the main casing (3);

A filter (5) to be arranged corresponding to the primary air suction surface of the heat exchanger (4) and the filter (5) are attached, and the filter (5) is attached to the heat exchanger (4). A filter drive section (72) that moves through a filter moving path (12a, 12b) along the air suction surface of

A filter detection unit (LS) provided at a predetermined position on the terminal side of the filter movement path (12a, 12b);

A filter cleaning unit (6) for cleaning the filter surface of the filter (5) in the middle of the filter movement path (12a, 12b);

A fan (70) disposed on the secondary side of the heat exchanger (4),

The filter detection unit (LS) is connected to the end of the filter moving path (12a, 12b) in accordance with the amount of displacement of the mounting position that may occur due to the mounting state of the filter (5) with respect to the filter driving unit (72). (P) Force, the amount of displacement toward the inside of the filter movement path

0

An air conditioner with a filter cleaning unit, wherein the air conditioner is provided at a position corrected by an amount corresponding to the amount.

[2] The moving state when the filter (5) is moved by the filter driving unit (72) is also configured to be detected by the filter detecting unit (LS). Air conditioner with filter cleaning unit.

[3] When the filter (5) is moved by the filter drive unit (72), the filter detection by the filter detection unit (LS) is performed up to the position where the filter detection unit (LS) is installed. Whether the filter (5) is movable or not is determined based on the presence / absence of an intelligent signal. On the other hand, after the filter is detected at the installation position of the filter detection unit (LS), the filter drive unit (72) determines the movement amount. The air conditioner with a filter cleaning unit according to claim 1 or 2, wherein the filter (5) is configured to determine whether or not the filter can be moved.

[4] Filter when starting the cleaning operation of the filter (5) by the filter cleaning unit (6) When there is a filter detection signal from the filter detection unit (LS) after mounting the filter (5) in the mounting status check, only the abnormality detection and origin correction control of the filter detection unit (LS) is performed. When the filter detection part (LS) does not detect the attachment of the filter (5), it is configured to detect the presence or absence of the filter in addition to the abnormality detection and origin correction control of the filter detection part (LS). The air conditioner with a filter cleaning unit according to claim 1, 2, or 3.