JP4591430B2 - Air conditioner with filter cleaning unit - Google Patents

Description

  The invention of this application relates to the structure of an air conditioner with a filter cleaning unit.

  Generally, a filter of an indoor unit for an air conditioner called a pre-filter is likely to be clogged with dust, dust, and the like, and needs frequent maintenance. However, the cleaning of the filter is quite troublesome, such as removing the filter from the indoor unit main body and taking out the dust in the mesh portion with a vacuum cleaner, and the fact is that it is not actually performed.

  Therefore, the operation time is integrated to determine the arrival of the filter cleaning time, and when the time when cleaning is necessary, a maintenance instruction (for example, LED lighting) is issued to prompt the user to clean the filter. It was broken.

  However, even if such a maintenance instruction is issued, there are many cases where the cleaning is not actually performed, and if the operation is continued with the filter clogged, the pressure loss is large and the power consumption increases due to an increase in the fan motor load. Invite. In addition, air suction noise increases.

  Therefore, recently, a filter cleaning unit has been incorporated into the indoor unit itself, and dust or the like attached to the filter is scraped automatically in response to a stoppage of operation or a remote control operation during an operation suspension period. There is provided an air conditioner with a filter cleaning unit in which dust discharged to the outside through a suction nozzle and an exhaust pipe or scraped off is stored in a dust box.

  In such a filter cleaning unit, for example, a scraping suction nozzle part that scrapes off dust from the filter and sucks up the dust that has been scraped moves to the left and right along the filter surface. Various types are provided such as attaching a dust box with a brush for use, moving the dust box up and down along the filter, and scraping dust into the dust box with the brush (the former is a patent Reference 1 and the latter are known as products).

  In addition, unlike the dust scraping nozzle unit or dust box that moves along the filter surface, the filter itself is a flexible structure that can be bent and deformed, while the filter is a main body of the air conditioner. Without moving the dust box, etc., by installing a dust box with a dust scraping brush that supports the filter so that it can reciprocate along the air intake surface on the upper surface. There has also been proposed a filter cleaning unit that can remove and store dust and the like from the filter (see Patent Document 2).

  On the other hand, in such an air conditioner (indoor unit), for example, a cross flow fan is used as a blower from the viewpoint of downsizing of the apparatus, and both ends of the heat exchanger are bent downward with respect to the cross flow fan. In addition, a so-called lambda-type (or inverted V-shaped) cross-fin heat exchanger is combined, and a configuration is adopted in which the dimension in the front-rear direction is made as small as possible while ensuring an effective heat exchange area as wide as possible. Yes.

  In the case of such a configuration, a V-shaped air passage portion (valley portion) that does not pass through any of the heat exchanger surfaces before and after the heat exchanger is formed in the bent portion on the upper end side of the cross fin heat exchanger. Therefore, if this part is not sealed in any way, there is a problem that the air from the upper air suction port passes through without passing through the heat exchange surface and the heat exchange efficiency decreases.

  For this reason, in a conventional general air conditioner or the like, the passage portion is sealed by fitting and fixing a V-shaped or inverted V-shaped seal member to the upper or lower valley portion of the bent portion. (For example, refer to Patent Document 3).

Japanese Patent Laying-Open No. 2006-112699 (Specification 1-6, FIG. 1-11) JP 2001-99479 A (Specifications page 1-4, FIG. 1-2) JP-A-7-217987 (Specification 1-6, FIG. 1-8)

  However, in the air conditioner with a filter cleaning unit as described above, when the heat exchanger bent portion sealing structure as described above is adopted, the air conditioner has an increased number of parts even by the addition of the filter cleaning unit. The number of parts of the machine (for example, a little over 500 points) will be further increased, and in combination with the increase in the number of assembly steps, the product cost will increase.

  Among the above-described conventional air conditioners with a filter filter cleaning unit, when the filter itself is a flexible structure that can be bent and deformed, and the filter is reciprocated in the vertical direction, the air The filter support member (the filter guide and the expansion support frame) provided from the heat exchanger front side to the upper side of the air intake port of the air conditioner corresponds to the upper side from the front side of the heat exchanger. The frame structure is centered on the left and right frame plates having guide grooves.

  Therefore, the support housing is insufficiently rigid, and there are problems such as the installation of a filter rewinding mechanism and the lack of stability of the guide function as a filter guide.

  The invention of this application was made to solve such a problem, and by providing a seal plate for a filter support member having a filter guide function provided corresponding to the heat exchanger, To provide an air conditioner with a filter cleaning unit that eliminates the need for such a sealing member as a single structural component and enables the installation of the seal plate simultaneously with the installation of the filter support member, reducing the number of parts and the number of installation steps. It is the purpose.

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

(1) Invention of Claim 1 This invention is arranged in the main body casing 3 with the air inlet 1 on the upper side and the air outlet 2 on the lower side and the both end sides bent downward. Heat exchanger 4, a filter 5 provided corresponding to the primary air suction surface of the heat exchanger 4, and the filter 5 movably supported along the air suction surface of the heat exchanger 4. A filter support member 7 that performs cleaning, a filter cleaning unit 6 that cleans the filter surface of the filter 5, a seal plate 20 that seals the valley portion 4 c of the bent portion of the heat exchanger 4, and two heat exchangers 4. In the air conditioner with a filter cleaning unit, which is provided with a fan 70 disposed on the next side, the seal plate 20 has a pressing elasticity that presses against the valley portion 4c of the bent portion of the heat exchanger 4. do it Together are integrated with each other and serial filter support member 7, it is characterized by being adapted to be pressed by the frame plate 71 of the filter support member 7.

  As described above, when the seal plate 20 having the same cross-sectional shape for sealing the air passage (valley part) 4 c of the bent portion of the heat exchanger 4 is integrated with the filter support member 7, the seal plate 20 is integrated with the filter support member 7. Since it becomes a structural part of itself, the number of parts is reduced, and the seal plate 20 is also installed at the same time as the filter support member 7 is installed on the main casing 3, so that the installation is easy. Therefore, the assembly man-hour is also reduced.

Moreover, in this case, in this case, the seal plate 20 has a pressing elasticity that presses against the valley portion 4 c of the bent portion of the heat exchanger 4 and is integrated with the filter support member 7. On the other hand, since it is pressed by the frame plates 71, 71 of the filter support member 7, the seal plate 20 is attached to the heat exchanger 4 at the same time as the filter support member 7 is attached. It is pressed by the frame plates 71 and 71 so as to effectively act on the valley portion 4c of the bent portion, and is securely attached to a more appropriate position in a press-fit state more appropriately fitted.

Further, the seal plate 20 is a V-shaped cross section corresponding to the cross-sectional shape of the valley portion 4c of the bent portion of the heat exchanger 4, it is also widely formed longitudinal width, to enable the filter support member 7 since that will be reinforced, also reliably up rigidity of the filter support member 7 themselves.

  As a result, the shape of the filter guide portion is stabilized, and the guide action of the pre-filter 5 is smooth.

  Further, the width of the seal portion of the seal plate 20 may be, for example, only the end surface portion of the front / rear heat exchange portion of the heat exchanger 4 that is bent, and the other portions are, for example, only the left and right frames and the integrated portion on the base end side. Therefore, the area of the passage for sucking air is not limited, and as large an area as possible can be secured.

(2) Invention of Claim 2 This invention is the configuration of the invention of Claim 1, wherein the seal plate 20 is formed integrally with the frame plates 71 , 71 of the filter support member 7 by synthetic resin . It is characterized by.

According to such a configuration, the seal plate 20 corresponding to the valley portion 4c of the bent portion of the heat exchanger at the same time when the filter support member 7 is molded with the synthetic resin is integrally provided with the pressing frame plates 71 and 71. Can be configured very easily.

(3) Invention of Claim 3 This invention is the configuration of the invention of Claim 1, wherein the seal plate 20 is formed by synthetic resin molding separately from the frame plates 71, 71 of the filter support member 7. It is characterized by being integrated with each other by being superposed or engaged with one end of the frame plates 71, 71 of the filter support member 7 on one end side .

The above-described seal plate 20 can be realized by various methods. For example, as in the invention of the second aspect, it may be formed integrally with the frame plates 71, 71 of the filter support member 7 by a synthetic resin. However, as in this invention, the frame plates 71, 71 of the filter support member 7 A synthetic resin molded product separately from 71 may be integrated with each other by being superposed or engaged with one end of the frame plates 71 and 71 of the filter support member 7 at one end thereof. .

As a result, according to the invention of this application, it is possible to easily and inexpensively realize the sealing structure of the bent portion of the heat exchanger for an air conditioner with a filter cleaning unit.

  1-8 has shown the structure of the whole and the principal part of the air conditioner A with a filter cleaning unit which concerns on the best embodiment of invention of this application.

(1) Overall configuration and operation of the air conditioner A The air conditioner A includes a main body casing 3 having an air suction port 1 on the upper surface side and an air outlet 2 on the lower surface side front, and the main body. A cross fin type heat exchanger (evaporator or condenser) 4 disposed in the casing 3, and a mesh-structured prefilter 5 provided corresponding to the primary air suction surface of the heat exchanger 4; The filter support member 7 that supports the prefilter 5 so as to be movable in the vertical direction and the horizontal direction from the vertical direction, the filter cleaning unit 6 that cleans the filter surface (mesh surface) of the prefilter 5, and the heat The cross flow type multi-blade fan 70 disposed on the secondary side of the exchanger 4 is provided.

  The main body casing 3 includes a housing portion 3a to which the heat exchanger 4, the pre-filter 5, the filter support member 7, the multi-blade fan 70 and the like are attached or supported, and an air suction covering the air suction port 2. The grill 3b and the front cover 3c that covers the front-side air suction space 1a of the heat exchanger 4 in a state that can be opened and closed.

  Further, 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 a rear side from the upper end part of the front side heat exchange part 4a. It consists of a back side heat exchanger 4b that is bent obliquely downward and is located above the back side of the main body casing 3, and from the top side air inlet 1 of the main body casing 3 to the front side air suction space 1a. A sufficient amount of airflow passes efficiently through a large area air suction passage formed over the portion.

  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 a blade of the multiblade fan 70. An air outlet passage 10 having a scroll structure that guides the air flow blown from the wheel portion 70a in the direction of the air blow-out port 2 is for preventing a reverse flow of the air flow blown from the impeller portion 70a of the multiblade fan 70. A tongue portion 11 is a wind direction adjusting mechanism composed of vertical blades, horizontal blades and the like disposed in the upstream portion of the air outlet 2.

  The front cover 3c is supported on both sides of the main body casing 3 via a predetermined movable guide mechanism. For example, as shown in FIG. 1, the front cover 3c approaches the front surface of the front-side heat exchange part 4a. It can be opened and closed between two states: a closed state in which the front surface portion of the side heat exchanger 4a is blinded and an open state in which the upper end side is pushed forward while moving downward from the closed state. In the open state, the front side of the front side heat exchanger 4a is configured to open.

  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 1a of the main body casing 3 is converted into the heat exchanger 4 (heat exchanger 4a, 4b) is cooled or heated to pass through the conditioned air having a desired temperature and humidity, and flows through the impeller portion 70a of the multiblade fan 70 so as to be orthogonal to the rotary shaft 70b. The air is blown into the room from the air outlet 2 through the structure air outlet passage 9.

  The impeller portion 70a of the multiblade fan 70 is parallel to the rotary shaft 70b at 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. A large number of blades are arranged at a predetermined blade angle.

(2) Configuration of Pre-filter 5 As shown in FIG. 3, for example, the pre-filter 5 is a flat lattice frame 51 made of a synthetic resin with good flexibility that can be freely bent into an arc shape. Of the flat frame members 51a, 51a,... Mesh members 52, 52,. The left and right outer frame 51A, 51A portion is formed wider than the lattice-like frame members 51a, 51a... Between them, and the back side thereof is orthogonal to the longitudinal direction at regular intervals. Are provided with convex bodies (engagement pins) 53, 53... Having a predetermined length.

(3) Configuration of the filter support member 7 that movably supports the prefilter 5 On the other hand, a filter support member 7 for prefilter support as shown in detail in FIG. Yes. The filter support members 7 are located on both the left and right sides of the pre-filter 5 and are formed in a shape along the entire shape from the upper surface side back plate position to the front surface lower end position of the lambda heat exchanger 4. Synthetic resin-made frame plates 71 and 71 having a relatively high cross-sectional shape, and filter winding / rewinding provided inside the lower side portions of the side walls 71a and 71a extending in the vertical direction of the frame plates 71 and 71. A vertical structure between the frame plates 71 and 71, the mechanisms 72 and 72, a filter retainer 73 having a frame structure provided corresponding to the front portions of the filter winding and unwinding mechanisms 72 and 72 and the filter support member 7. Filter guide members 74a, 74a, 75a, 75a provided at both upper and lower space surface positions of a corner surface portion that is displaced from a front surface side portion extending to a front surface side portion extending in the front-rear direction (horizontal direction). The filter guide members 74a, 74a, 75a, and 75a are respectively provided between two parallel support members 74, 74, 75, and 75 that are installed between the side wall portions 71a and 71a of the left and right frame plates 71 and 71, respectively. Are supported in parallel with each other with the plate surfaces orthogonal to each other, and the end portions of the plate portions having rounded surfaces at the upper and lower ends thereof are bent as the guide surfaces extending in the filter moving direction, and the intermediate portion of the pre-filter 5 is bent. It supports without turning and guides smoothly in the vertical and longitudinal directions.

  As is apparent from FIG. 8, these filter guide members 74a, 74a, 75a, 75a are supported and guided in correspondence with intermediate frame members 51a, 51a extending in the vertical direction of the prefilter 5. Yes.

  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, and the upper end side frame plate 73b portion of the frame plate portion. Is pivotally supported via latch mechanisms 76 and 76 on the upper ends of the front surfaces of the frame plates 71 and 71 on both the left and right sides of the filter support member 7 so that the lower end side thereof can be rotated in the vertical direction. The left and right side frame plates 73a and 73a are on the front side of the front and rear frame wall portions forming the guide grooves of the prefilter 5 of the left and right frame plates 71 and 71 of the filter support member 7, respectively. Up and down direction with the toothed belt 72c of the filter winding / rewinding mechanisms 72, 72 that also serves as the frame wall portion (71a) and constitutes the central operating mechanism of the filter cleaning unit 6 described below. A first filter guide groove (filter moving space) 12a extending in the direction is formed.

  Further, the frame members 51a and 51a in the vertical direction of the pre-filter 5 are slidable between the left and right frame plates 73a and 73a corresponding to the filter guide members 75a and 75a on the filter support member 7 side. Presser members 73c and 73c to be pressed are provided.

(4) Configuration of Filter Cleaning Unit 6 On the other hand, the filter cleaning unit 6 is located on both sides of the front portion of the heat exchanger 4 (the front portion of the front side heat exchange portion 4a), and the prefilter 5 is, for example, shown in FIG. The above-described filter winding / rewinding mechanisms 72 and 72, and the pre-filter winding portions of the filter winding / rewinding mechanisms 72 and 72, for example, as shown in FIG. , And a scraper brush 16 having a rotor structure that scrapes off dust, dust and the like adhering to the mesh members 52, 52... Of the prefilter 5 and the scraper brush. And a dust box 17 for storing the dust and the like scraped off by 16.

  The filter winding / rewinding mechanisms 72 and 72 include a first lower-diameter first toothed pulley 72a, an upper-side smaller second toothed pulley 72b, and first and second toothed pulleys 72a, 72b, and a toothed belt 72c that is engaged with the belt 72b. The toothed belt 72c includes, as shown in FIG. .. Are provided at regular intervals corresponding to the longitudinal direction.

  The toothed belt 72c is accurately rotationally driven (stepping drive) in both forward and reverse directions by the driving of the first toothed pulley 72a by the pulse motor M1 (M2) of FIG. 8, for example, forward rotation (right rotation). ) When driven in the direction, the prefilter 5 is properly mounted to the final set position (upper end side) necessary for the expansion of the prefilter 5 through the first and second guide grooves 12a and 12b, When driven in the reverse rotation (left rotation) direction, the pre-slip is located between the toothed belt 72c and the lower end of the guide groove 12a along the pulley surface of the first toothed pulley 72a. The first guide plate 14a, the second guide plate 14b, and the like, which are provided at a predetermined rotation angle width while maintaining a clearance necessary for passing the outer frames 51A, 51A of the filter 5 On the 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 from the roller surface, on the second toothed pulley 72b on the upper end side The substantially entire prefilter 5 from the state shown in FIG. 5 is utilized by utilizing a guide action such as a fourth guide plate 15a (rotating support shaft 15c) that presses the curved surface portion of the prefilter that is caught in the same portion by its own weight. As shown in FIG. 6, the belt is wound on the outer peripheral surface of the toothed belt 72c. In addition, on the pulley surfaces of the first and second toothed pulleys 72a and 72b, annular grooves for releasing the tips of the convex bodies 53, 53... 53, 53. Is provided.

  When the pre-filter 5 is caught, it is provided below the first toothed pulley 72a (between the first guide plate 14a and the second guide plate 14b behind the predetermined rotation angle). The dust, dust, etc. adhering to the mesh members 52, 52... Of the pre-filter 5 are sufficiently scraped off by the dust scraping brush 16 (state of FIG. 6). The dust scraping brush 16 is provided so as to be located in the dust box 17 described above, and the dust, dust, and the like scraped off are reliably stored in the dust box 17. The dust box 17 is detachably attached to the main casing 3 and can be periodically removed to throw away dust and dust.

  Accordingly, when the lower end side of the filter retainer 77 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 5b of the prefilter 5 The pressing state with respect to the side toothed belt 72c is released, and the convex bodies 53, 53... On the back surface side of the pre-filter 5 are removed from the engagement holes 13, 13. Then, the convex bodies 53, 53... Are omitted), and the prefilter 5 can be detached from the filter support member 7 (see the direction of arrow a).

  In this case, since the filter presser 73 is pivotally supported by the filter support member 7 via the latch mechanisms 76 and 76, it is possible to maintain the open state at a desired angle as shown in FIG. The pre-filter 5 can be easily removed and the insertion and mounting work can be easily reversed.

  For example, as shown in the arrow b in FIG. 4, the prefilter 5 is mounted on the upper end 5a side of the prefilter 5 from the lower first guide groove 12a to the second guide on the upper end side. Inserted in the direction of the groove 12b (At this time, an arcuate filter guide 15b is further formed at the upper end of the fourth guide plate 15a, and the prefilter 5 at the time of insertion is guided upward. After that, the convex bodies 53, 53... On the lower surface 5b side rear surface (outer frame 51A, 51A rear surface) from the middle side are, for example, shown in phantom lines in FIG. 1. Insert and engage with each of the engagement holes 13, 13... On the front side portion of the toothed belt 72c (72c, 72c) spanned between the second toothed pulleys 72a, 72b (a pair of left and right). In the same engagement state, the filter presser 73 is Close to the state.

  After that, when the front cover 3c is again engaged with the front movable guide mechanism portion of the main body casing 3 and a desired filter operation switch is turned on, the lower end 5b side of the prefilter 5 is once reversed by a predetermined dimension and After being wound between the first toothed pulley 72a side first and second guide plates 14a, 14b, the forward rotation is then carried out, and the upper end 5a side is fed upward by an appropriate dimension amount. Stop at the set position.

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

  The filter winding and unwinding mechanisms 72 and 72 including the first and second toothed pulleys 72ab and 72b and the toothed belt 72c described above are provided for each pair of left and right prefilters 5 and 5 and filter support members 7 and 7. A pair of left and right is provided. Reference numerals 77 and 77 are elastic rolls of the same diameter interposed between the pair of left and right first toothed pulleys 72a, 72a, 72a, 72a.

(5) Configuration of the top seal portion of the lambda heat exchanger 4 As described above, in the air conditioner A of the present embodiment, for example, a crossflow type multi-blade is used as the blower from the standpoint of downsizing the apparatus. In addition to adopting the fan 70, the cross flow type multi-blade fan 70 is combined with a lambda type (or inverted V type) cross fin type heat exchanger 4 in which both ends of the heat exchanger are bent downward, A configuration is adopted in which the dimension in the front-rear direction is made as small as possible while ensuring an effective heat exchange area as wide as possible.

  In the case of such a configuration, a V-shaped air passage portion that does not pass through any of the heat exchange portions 4a and 4b before and after the heat exchanger 4 in the bent portion on the lower side of the upper end side of the lambda heat exchanger 4 ( (Crevice) 4c will be formed, so if this part is not sealed in any way, the air from the upper air inlet 1 will pass through without passing through the heat exchange surface, heat exchange efficiency, heat exchange performance There is a problem that decreases.

  For this reason, in a conventional general air conditioner or the like, a seal member having a V-shaped cross-section or an inverted V-shape is fitted and fixed to the upper or lower portion of the V-shaped air passage (valley) 4c. I was trying to do it.

  However, in the air conditioner with a filter cleaning unit as described above, when such a seal structure is adopted, the number of parts increases due to the addition of the filter cleaning unit 6 having a complicated structure. The number of parts (for example, over 500 points as an example) will be further increased, and there is a problem that a considerable increase in product cost is caused in combination with an increase in the number of assembly steps.

  Further, in the above configuration, unlike the conventional filter cleaning unit in which the nozzle unit and the dust box move along the filter surface, the prefilter 5 itself can be bent and deformed, so that the prefilter 5 is a conveyor. Filter rewinding and rewinding mechanisms 72, 72 that support the reciprocating movement along the entire intake surface from the front surface side to the upper surface side of the heat exchanger 4 and rewind substantially the whole from its lower end side. Furthermore, the brush 16 and the dust box 17 are moved by detachably installing a dust box 17 having a scraping brush 16 for dust, dust, etc. corresponding to the winding position of the winding / rewinding mechanisms 72, 72. The prefilter 5 is moved without removing the dust and dust from the prefilter 5 automatically. So that you can be.

  In the case of such a configuration, the pre-filter support and the guide filter support member 7 provided from the front side to the upper side of the heat exchanger 4 of the air conditioner A inevitably have a wide air suction surface. Since it must be an unconstrained structure, it is inevitably lacking in rigidity, and it is difficult to achieve a stable support function for the support of the filter cleaning unit 6 and so on, and it is necessary to increase the rigidity by some means.

  Therefore, in the present embodiment, for example, as shown in FIGS. 1, 2, and 4 to 8, a lower portion of the upper end side predetermined width portion extending in the front-rear direction between the frame plates 71, 71 of the filter support member 7. From the upper end side to the vicinity of the inclination start surface from the front side corner portion, a cross section (side surface) V shape that matches the shape of the air passage portion (valley portion) 4c of the bent portion of the lambda type heat exchanger 4 is provided. A seal plate 20 having a seal surface portion 20a for heat exchanger top seal is provided integrally, and at the same time when the filter support member 7 is attached to the body casing 3 side, the lambda type is formed by the seal surface portion 20a of the seal plate 20. The V-shaped air passage part (valley part) 4c of the bent part of the heat exchanger 4 is configured to be surely sealed (inhibition of the air flow state).

  In this case, the lower surfaces of the side wall portions 71 a and 71 a having a predetermined width of the frame plates 71 and 71 constituting the filter support member 7 have a shape corresponding to the V-shaped side surface shape of the seal plate 20. They are appropriately pressed and engaged from above, but apart from that, the seal plate 20 itself is a side wall portion of the frame plates 71 and 71 as shown in FIGS. The filter support member 7 is attached to the main casing 3 by being integrated with the frame plates 71 and 71 in a state of being deviated (separated) below the lower surface position by a predetermined dimension with respect to the lower surfaces of the 71a and 71a. Sometimes the air passage part (valley part) 4c of the bent part of the lambda type heat exchanger 4 is also caused by the elastic force (the urging force in the pressing direction as shown by the arrow P in FIG. 7) when it is bent and deformed. Against the entire surface Adapted to be fitted in a contact state.

  Therefore, the sealing state by the sealing surface portion 20a is further ensured. In addition, it is less likely to rattle and is installed in a stable state.

  The seal plate 20 can be realized by various methods. For example, it may be molded integrally with the frame plates 71 and 71 of the filter support member 7 using synthetic resin, or may be molded separately from the synthetic resin and the upper ends (bases) of the frame plates 71 and 71 of the filter support member 7. They may be integrated with each other by being integrated (or engaged) on the end side.

  As described above, the air passage portion (valley portion) 4c having a V-shaped cross section of the bent portion of the cross fin heat exchanger 4 on the upper end side (specifically, between the frame plates 71 and 71) of the filter support member 7 as a filter unit. According to the seal structure in which the seal plate 20 having the seal surface portion 20a having a predetermined width and having a V-shaped cross section is integrated, the seal plate 20 becomes a structural part of the filter support member 7 itself, and the number of parts is also increased. Since the seal plate 20 is also installed at the same time as the filter support member 7 is installed on the main casing 3, the installation is easy. Therefore, the assembly man-hour is also reduced. As a result, the cost is also reduced.

  In addition, the seal surface portion 20a of the seal plate 20 has a V-shaped cross section and a relatively wide width in the front-rear direction. In the overlap state with the frame plates 71 and 71 on the filter support member 7 side, the seal surface portion 20a is spaced at a predetermined interval on both sides. A plurality of parallel support frame portions 20b, 20b... Extending in the front-rear direction correspond to the front-rear frame members 51a, 51a... Of the prefilter 5 supported by the filter support member 7. The frame members 51a, 51a... Are supported and guided, and their base ends are connected and integrated with each other by a frame body 20c having a predetermined width extending in both the left and right directions. Since the frame plates 71 and 71 are integrally coupled to the base end sides of the frame plates 71 and 71 and the frame plates 71 and 71 of the filter support member 7 are connected, the rigidity of the filter support member 7 itself is also reduced. To really up.

  As a result, the prefilter 5 is supported flat without any deflection, and is smoothly guided during movement. In addition, the support of the filter cleaning unit 6 and the like is stabilized, and the shapes of the first and second guide grooves 12a and 12b are also stabilized, so that the prefilter 5 is moved during winding and unwinding (expansion). Becomes even smoother.

  Further, the width of the seal surface portion 20a of the seal plate 20 provided so as to connect the support frame portions 20b, 20b,... Only the width corresponding to the width of the V-shaped end surface portion of the portions 4a and 4b is sufficient, and the other portions are only the support frame portions 20b, 20b,... Therefore, the area of the air suction passage is not particularly limited, and a possible wide air passage area can be secured.

It is sectional drawing which shows the whole structure of the air conditioner with a filter cleaning unit which concerns on best embodiment of invention of this application. It is a perspective view of the state which removed exterior parts, such as the whole surface cover of the same air conditioner, an upper surface side air suction grille. It is an expanded perspective view of the principal part which shows the relationship between the pre filter of the same air conditioner, and a pre filter winding rewinding mechanism. Pre-filter and pre-filter support member of the same air conditioner, filter holder, seal plate, pre-filter winding and unwinding mechanism, scraping brush for dust etc., enlarged cross section of pre-filter insertion or removal state showing the mutual relationship and structure of dust box FIG. The pre-filter and pre-filter support member of the same air conditioner, filter holder, seal plate, pre-filter winding and unwinding mechanism, scraping brush for dust, etc. is there. Pre-filter and pre-filter support member of the same air conditioner, filter holder, seal plate, pre-filter winding and unwinding mechanism, scraping brush for dust and the like, enlarged cross-sectional view of the pre-filter winding state showing the mutual relationship and structure of the dust box It is. It is the expanded sectional view of the principal part seen from the side which shows the relationship between the pre filter support member, heat exchanger, and seal plate in the air conditioner. It is an expanded sectional view of the principal part which shows the mutual relationship of the pre filter support member of the same air conditioner, a pre filter, and a pre filter holder.

  A is an air conditioner, 1 is an air inlet, 2 is an air outlet, 3 is a main body casing, 3a is a housing, 3b is an air inlet grille, 3c is a front cover, 4 is a heat exchanger, 4a is a front side heat exchanger 4b is a back side heat exchange part, 4c is a V-shaped air passage part (valley part) of a heat exchanger bent part, 5 is a pre-filter, 6 is a filter cleaning unit, 7 is a filter support member, 16 is dust, etc. A scraping brush, 17 is a dust box, 20 is a seal plate, 20a is a seal portion of the seal plate, 70 is a multi-blade fan, 71 is a frame plate on the left and right sides of the filter support member 7, 71a is a side wall portion of the frame plate 71, 71b Is a front wall portion of the frame plate 71, 72a is a first toothed pulley, 72b is a second toothed pulley, and 72c is a toothed belt.

Claims (3)

A main casing (3) having an air inlet (1) on the upper side and an air outlet (2) on the lower side, and heat exchange disposed in the main casing (3) with both ends bent downward A heat exchanger (4), a filter (5) provided corresponding to the primary air suction surface of the heat exchanger (4), and the filter (5) on the air suction surface of the heat exchanger (4). A filter support member (7) that is movably supported along the filter, a filter cleaning unit (6) that cleans the filter surface of the filter (5), and a valley portion (4c) of the bent portion of the heat exchanger (4). In the air conditioner with a filter cleaning unit, which includes a seal plate (20) for sealing the fan and a fan (70) disposed on the secondary side of the heat exchanger (4), the seal plate (20 ) Of the bent part of the heat exchanger (4) The filter support member (7) is integrated with the filter support member (7) so as to be pressed against the intermediate portion (4c), and the frame plates (71), (71) of the filter support member (7). An air conditioner with a filter cleaning unit, wherein the air conditioner is pressed by the filter cleaning unit. The air conditioning unit with a filter cleaning unit according to claim 1, wherein the seal plate (20) is integrally formed with the frame plates (71), (71) of the filter support member (7) by a synthetic resin. Machine. The seal plate (20) is made of synthetic resin molded separately from the frame plates (71), (71) of the filter support member (7), and the frame plate (71) of the filter support member (7) at one end thereof. , (71) by polymerisation or be engaged with the one end of claim 1 Symbol mounting an air conditioner with a filter cleaning unit, characterized in that it is integrated with each other.

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