CN112292570A - Indoor unit of air conditioner - Google Patents
Indoor unit of air conditioner Download PDFInfo
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- CN112292570A CN112292570A CN201980038934.5A CN201980038934A CN112292570A CN 112292570 A CN112292570 A CN 112292570A CN 201980038934 A CN201980038934 A CN 201980038934A CN 112292570 A CN112292570 A CN 112292570A
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- air
- indoor unit
- filter
- suction
- suction port
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0071—Indoor units, e.g. fan coil units with means for purifying supplied air
- F24F1/0073—Indoor units, e.g. fan coil units with means for purifying supplied air characterised by the mounting or arrangement of filters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/28—Arrangement or mounting of filters
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)
Abstract
An indoor unit (1) of an air conditioner has a first suction port (12) provided with a first filter (16) on the lower surface of an indoor unit main body (2), and the front-side end portions (12a, 16a) of the respective indoor unit main bodies (2) of the first suction port (12) and the first filter (16) are inclined so as to be positioned above the rear-side end portions (12b, 16b) of the respective indoor unit main bodies (2).
Description
Technical Field
The present invention relates to an air conditioner having an air purification function.
Background
Conventionally, in order to obtain an Air cleaning function, an Air conditioner is known which includes an Air cleaning Filter such as a HEPA Filter (High Efficiency Air Filter) at an Air inlet. An indoor unit of a general air conditioner having no air cleaning function has an air inlet only on the upper surface. Therefore, an indoor unit of an air conditioner including an air cleaning filter generally has an air inlet only on the upper surface.
Fig. 7 (a) and (b) are explanatory views showing the air flow in the air-conditioned space of the indoor unit 100 of the air conditioner having the air cleaning filter on the upper surface and the air inlet. In such an indoor unit 100, as indicated by arrows in fig. 7 (a), it is effective to blow air (wind) downward from an air outlet toward the floor surface, and to perform air purification by sucking airborne dust together with the air from the air inlet.
As shown by the arrows in fig. 7 (b), when air (wind) is blown upward from the ceiling, the air blown from the indoor unit 100 flows in this order along the ceiling, the wall, and the floor, and finally rises to the ceiling and is sucked from the suction port. In this case, in the vicinity of the ceiling near the indoor unit 100, the air discharged from the indoor unit 100 and the sucked air intersect with each other, and dust may flow into the air discharged from the indoor unit 100, and the like, and thus efficient air purification may not be performed.
In recent years, as disclosed in patent document 1, an indoor unit of a lower suction type air conditioner having an air cleaning function and provided with an air inlet on a lower surface has been proposed. The indoor unit described in patent document 1 has a structure in which an air cleaner is provided between a filter provided inside the suction port and the heat exchanger.
Documents of the prior art
Patent document
Patent document 1: japanese laid-open patent publication No. 2007-285533 "
Disclosure of Invention
Technical problem to be solved by the invention
An indoor unit of an air conditioner is disposed at a relatively high position in an air-conditioned space such as near a ceiling. Therefore, if the air inlet provided with the air cleaning filter is provided on the lower surface side of the indoor unit of the air conditioner, it is possible to expect an improvement in the air cleaning effect and an increase in the amount of air sucked. Therefore, it is considered that air inlets provided with air cleaning filters are formed in the upper surface and the lower surface of the indoor unit of the air conditioner.
Fig. 8 (a) and (b) are explanatory views showing flows of air in the air-conditioned space in the indoor unit 200 of the air-conditioning apparatus in a case where air inlets provided with air cleaning filters are provided on the upper surface and the lower surface of the indoor unit 200 of the air-conditioning apparatus, respectively.
As shown by the arrows in fig. 8 (a), when air is discharged upward from the indoor unit 200 toward the ceiling, air flowing along the ceiling and the wall to the floor surface is sucked through the air inlet provided in the lower surface of the indoor unit 200. Therefore, by using the indoor unit 200 having the air inlet provided with the air cleaning filter on the lower surface, as shown in fig. 7 (b), the contact between the discharged air and the sucked air is reduced, and the air cleaning can be performed efficiently.
Further, as shown by the arrows in fig. 8 (b), when air is blown out downward from the indoor unit 200 toward the floor surface, dust flying deeper than the air blown out toward the floor surface is sucked in from the suction port provided in the upper surface of the indoor unit 200 as viewed from the indoor unit 200. On the other hand, dust flying in the front of the air blown out to the floor surface is sucked through the suction port provided on the lower surface of the indoor unit 200 as viewed from the indoor unit 200. This allows more effective air purification than when only the suction port is provided on the upper surface of the indoor unit 200.
Further, the closer to the front side than the air blown out to the floor surface as viewed from the indoor unit 200 means the closer to the indoor unit 200 than the position where the air discharged from the indoor unit 200 contacts the floor surface. Further, the rear side of the air blown out to the floor surface as viewed from the indoor unit 200 indicates the front side of the indoor unit 200, in other words, the direction opposite to the front side.
However, when the air inlet provided with the air cleaning filter is provided on the lower surface of the indoor unit 200 as described above, the following problems arise.
Fig. 9 is a view showing a problem when an air inlet having an air cleaning filter is provided on the lower surface of the indoor unit 200 of the air conditioner.
As described above, an indoor unit of a general air conditioner having no air cleaning function generally has an air inlet on the upper surface. In such an indoor unit of an air conditioner, a pre-filter for collecting and removing coarse dust is used as a dust collecting filter. Although a decorative panel is provided on the front surface of the air conditioner, if the indoor unit of a normal air conditioner is used in such a manner as to use a pre-filter, an air inlet can be provided over a wide range from the front surface to the upper surface of the indoor unit. In this case, the sucked velocity vector is not only formed in the vertical direction but also formed in a part in the horizontal direction.
However, the thickness of an air cleaning filter such as a HEPA filter for trapping and removing fine dust that cannot be removed by the pre-filter is considerably thicker than that of the pre-filter. As an example, the HEPA filter has a thickness of 30mm, for example. Therefore, such an air cleaning filter is arranged linearly. Therefore, the air intake port is formed horizontally, and when the air cleaning filter is disposed horizontally, the speed vector of the intake is configured to be substantially vertical.
Therefore, when the air inlet having the air cleaning filter is horizontally provided on the lower surface of the indoor unit 200, if an obstacle such as furniture or a curtain rail is present directly below the indoor unit 200, in other words, in parallel with the suction surface of the air inlet, as shown in fig. 9, the size of the gap between the indoor unit 200 and the obstacle may be different, and the suction (downward suction) of air from the air inlet may not function normally.
In addition, when the gap (ventilation space) between the indoor unit 200 and the obstacle is narrow, the area through which the wind passes becomes narrow, and the wind speed becomes high. The air supply resistance is proportional to the square of the wind speed. The increase in the air flow resistance is linked to a decrease in the air volume (in other words, a decrease in the amount of air taken in from the air intake). The air sucked from the air inlet is blown out from the air outlet via the blower fan and the heat exchanger. Therefore, when the amount of air sucked in from the air inlet decreases, the speed of the air blown out from the air outlet decreases, and the air blown out from the air outlet does not reach a distance.
Therefore, when the air inlet is horizontally provided on the lower surface of the indoor unit 200, if an obstacle is disposed directly below the indoor unit 200, the circulation of air may be deteriorated, and the air purification effect may be reduced.
The above problem occurs not only in the case where the air inlets having the air cleaning filters are formed in the upper surface and the lower surface of the indoor unit of the air-conditioning apparatus, such as the indoor unit 200, but also in the case where the air inlets having the air cleaning filters are formed only in the lower surface of the indoor unit of the air-conditioning apparatus.
Therefore, an object of one aspect of the present invention is to provide an indoor unit of an air conditioner, which can maintain air circulation performance even when an obstacle is present directly below the indoor unit of the air conditioner, and which has an air cleaning effect higher than that of the conventional air conditioner.
Technical solution for solving technical problem
In order to solve the above problem, an indoor unit of an air conditioner according to an aspect of the present invention includes a main body having a blow-out port through which air is blown out, the main body having a first intake port through which air is taken in at a lower surface thereof, and a first air cleaning filter inside the first intake port, wherein an air intake surface of the first intake port is inclined such that an end portion of the intake surface on a front surface side of the main body is positioned above an end portion of the intake surface on a rear surface side of the main body, and the first air cleaning filter is inclined such that an end portion of the first air cleaning filter on a front surface side of the main body, which is a surface opposite to the first intake port, is positioned above an end portion of the intake surface on the rear surface side of the main body.
Advantageous effects
According to one aspect of the present invention, it is possible to provide an indoor unit of an air conditioner that can maintain air circulation performance even when an obstacle is present directly below the indoor unit of the air conditioner and has an air cleaning effect higher than that of the conventional air conditioner.
Drawings
Fig. 1 is a perspective view showing an external appearance of an indoor unit of an air conditioner according to a first embodiment.
Fig. 2 is a longitudinal sectional view of the indoor unit of the air conditioner shown in fig. 1.
Fig. 3 (a) is a schematic side view of the indoor unit showing the states of the opening/closing cover and the air guide plate when the indoor unit of the first embodiment is in the stopped state, (b) is a schematic side view of the indoor unit showing the states of the opening/closing cover and the air guide plate when the indoor unit of the first embodiment is in the cooling setting, and (c) is a schematic side view of the indoor unit showing the states of the opening/closing cover and the air guide plate when the indoor unit of the first embodiment is in the heating setting.
Fig. 4 is a conceptual diagram illustrating a configuration of essential parts of the indoor unit according to the first embodiment.
Fig. 5 is a conceptual diagram illustrating the configuration of essential parts of the indoor unit according to the second embodiment.
Fig. 6 is a conceptual diagram illustrating the configuration of essential parts of an indoor unit according to the third embodiment.
Fig. 7 (a) and (b) are explanatory views showing air flows in an air-conditioned space caused by an indoor unit of an air conditioner having an air cleaning filter on the upper surface and an air inlet.
Fig. 8 (a) and (b) are explanatory views showing flows of air in an air-conditioned space caused by the indoor unit of the air-conditioning apparatus in a case where air inlets provided with air cleaning filters are provided on the upper surface and the lower surface of the indoor unit of the air-conditioning apparatus, respectively.
Fig. 9 is a view showing a problem in a case where an air inlet provided with an air cleaning filter is provided on a lower surface of an indoor unit of an air conditioner.
Fig. 10 is a diagram showing another problem in the case where air inlets provided with air cleaning filters are provided on the upper surface and the lower surface of an indoor unit of an air conditioner.
Detailed Description
Hereinafter, embodiments of the present invention will be described in detail. In the following embodiments, members having the same functions as those of the members described above are denoted by the same reference numerals, and the description thereof will not be repeated.
[ first embodiment ]
Fig. 1 is a perspective view showing an external appearance of an indoor unit 1 of an air conditioner according to the present embodiment.
Fig. 2 is a longitudinal sectional view of the indoor unit 1 of the air conditioner shown in fig. 1.
(outline of indoor machine 1)
As shown in fig. 1, an indoor unit 1 of an air conditioner includes a louver 3 on a front surface of an indoor unit main body 2 (main body). As shown in fig. 2, the indoor unit main body 2 has a first suction port 12 (lower suction port) for sucking air on the lower surface, a second suction port 11 (upper suction port) for sucking air on the upper surface, a blower fan 13 and a heat exchanger 14 inside, and a blow-out port 17 at the front.
The indoor unit 1 includes a first filter 16 (first air cleaning filter) for cleaning the air passing through the first intake port 12 on the inner side (upper side) thereof, and a second filter 15 (second air cleaning filter) for cleaning the air passing through the second intake port 11 on the inner side (lower side) thereof. The first filter 16 is fixed inside the indoor unit main body 2 by a first filter holding member 22. The second filter 15 is fixed inside the indoor unit main body 2 by a second filter holding member 21.
The first filter 16 and the second filter 15 are air cleaning filters that collect and remove fine dust contained in air passing through these filters, and are filters having higher performance, a larger thickness, and a larger air flow resistance than a dust collecting filter called a so-called pre-filter that collects and removes coarse dust. As the first Filter 16 and the second Filter 15, for example, a HEPA (High Efficiency Air Filter) Filter is used.
In the indoor unit 1, when the blower fan 13 is rotated, the air taken in from the first inlet 12 is blown out from the outlet 17 via the first filter 16, the blower fan 13, and the heat exchanger 14. The air sucked from the second suction port 11 is blown out from the blow-out port 17 via the second filter 15, the blower fan 13, and the heat exchanger 14. The second suction port 11 is provided with an opening/closing cover 18 for opening/closing the second suction port 12.
The blower fan 13 is, for example, a sirocco fan or a turbo fan. The heat exchanger 14 is disposed at a position forward of the blower fan 13 (at a position closer to the front side of the indoor unit 1 than the blower fan 13).
The indoor unit 1 can perform air purification by downward suction in which air is sucked through the first suction port 12, or upward and downward suction in which air is sucked through each of the first suction port 12 and the second suction port 11. The indoor unit 1 can perform an air cleaning operation together with cooling or heating. Further, only the air cleaning operation may be performed. In the indoor unit 1, when air is conditioned, downward suction or upward and downward suction is performed in accordance with the discharge direction of air discharged from the air outlet 17.
Fig. 3 (a) is a schematic side view of the indoor unit 1 showing the states of the opening/closing cover 18 and the air guide plate 3 when the indoor unit 1 of the present embodiment is in a stopped state. Fig. 3(b) is a schematic side view of the indoor unit 1 showing the states of the opening/closing cover 18 and the air guide plate 3 when the indoor unit 1 of the present embodiment is set to the cooling setting. Fig. 3 (c) is a schematic side view showing the states of the opening/closing cover 18 and the air guide plate 3 in the case where the indoor unit 1 of the present embodiment is set to the heating mode. In fig. 3 (a) to (c), the blower fan 13 and the heat exchanger 14 shown in fig. 2 are omitted for simplicity.
As shown in fig. 3 (a), the open/close cover 18 is in a closed state when the operation of the air conditioner is stopped, and neither the upper suction nor the lower suction is performed. As shown in fig. 3(b), the opening/closing cover 18 is in a closed state when the cooling setting is performed. In this case, the following lower suction and upper blowing are performed: air is sucked in through the first suction port 12, and air (wind) is blown out upward toward the ceiling from the blow-out port 17.
In this case, as shown by the arrows in fig. 8 (a), the air discharged upward toward the ceiling flows toward the floor along the ceiling and the wall. The air flowing toward the floor is sucked through the first suction port 12 provided in the lower surface of the indoor unit 1, as in the indoor unit 200.
Therefore, according to the indoor unit 1, as shown in fig. 7 (b), the contact between the discharged air and the sucked air is small, and the air can be efficiently cleaned.
As shown in fig. 3 (c), the opening/closing cover 18 is opened in the heating setting. In this case, the following up-and-down suction-down blowing is performed: air is sucked in from the first suction port 12 and the second suction port 11, and air (wind) is blown out downward toward the floor from the air outlet 17.
In this case, as shown by the arrows in fig. 8 (b), the air blown out toward the floor flows upward (toward the ceiling) along the wall from the floor. At this time, similarly to the indoor unit 200, dust flying in front of the indoor unit 1 (in other words, on the back side of the air blown toward the floor surface as viewed from the indoor unit 1) rises to the ceiling along the wall side opposite to the wall on which the indoor unit 1 is installed, and is sucked in from the second suction port 11. Further, dust flying toward the front side of the air blown out to the floor surface is sucked in from the first suction port 12 as viewed from the indoor unit 1. This makes it possible to perform air purification more efficiently than in the case where air inlets are provided only on the upper surface or the lower surface of the indoor unit of the air conditioner as in the related art.
Fig. 4 is a conceptual diagram illustrating the configuration of essential parts of the indoor unit 1 according to the present embodiment. As shown in fig. 2 and 4, the air intake surface of the first intake port 12 (in other words, the opening surface of the first intake port 12, hereinafter referred to as "first intake surface") is inclined such that the front-surface-side end 12a of the indoor unit main body 2 on the first intake surface is positioned above the rear-surface-side end 12b of the indoor unit main body 2 on the first intake surface. The first filter 16 is inclined such that a front-side end 16a of the indoor unit main body 2 on a surface of the first filter 16 facing the first suction port 12 (in other words, a front-side lower end of the first filter 16) is positioned above a rear-side end 16b of the indoor unit main body 2 on the surface facing the first suction port 12 (in other words, a rear-side lower end of the first filter 16).
In the indoor unit 1, the first suction surface and the first filter 16 are inclined as described above, and therefore, even if an obstacle such as furniture or a curtain rail is present directly below the indoor unit 1, a gap between the first suction port 12 and the obstacle can be secured, and the passage of air (air) can be expanded. Further, by inclining the first suction surface and the first filter 16 as described above, the velocity vector of suction of the indoor unit 1 is configured not only in the vertical direction but also in the horizontal direction, although the first filter 16 is arranged linearly. Therefore, air is more easily sucked than in the case where the speed vector of suction of the indoor unit 1 is configured to be substantially perpendicular. Therefore, even if an obstacle is present directly below the indoor unit 1, the air circulation performance can be maintained.
Further, since the first suction surface and the first filter 16 are inclined as described above, as shown in fig. 4, the width L12 in the direction of inclination in the first suction port 12 (in other words, the length between the front-surface-side end 12a and the rear-surface-side end 12b of the indoor unit main body 2 in the first suction port 12) is larger than the projection width L12' (in other words, the length in the horizontal direction between the front-surface-side end 12a and the rear-surface-side end 12b of the indoor unit main body 2 in the first suction port 12) of the first suction port 12 that is projected onto the horizontal plane in the direction of inclination described above. That is, L12> L12'.
Therefore, by inclining the first suction surface and the first filter 16 as described above, the first suction surface is formed horizontally, and the opening width (opening area) of the first suction surface can be increased even if the horizontal width (L12') of each first suction surface is the same as compared with the case where the first filter 16 is arranged horizontally. As a result, the air blowing resistance becomes small and the air volume increases. The air sucked in from the first suction port 12 is blown out from the blow-out port 17 via the blower fan 13 and the heat exchanger 14. Therefore, when the amount of air sucked in from the first suction port 12 increases, the speed (wind speed) of the air blown out from the air outlet 17 increases, and the air blown out from the air outlet 17 reaches a distance. In particular, as shown in fig. 3(b), the reaching distance of the wind when blowing upward becomes longer. Therefore, the cleaning rate of the air in the air-conditioned space (air-cleaning space) can be improved. Therefore, according to the present embodiment, it is possible to provide the indoor unit 1 of the air conditioner having an air cleaning effect higher than that of the conventional one.
In the present embodiment, the inclination angle of the first suction surface and the inclination angle of the first filter 16 are preferably the same, but may be different.
The larger the inclination angle of the first suction surface and the larger the inclination angle of the first filter 16 are, the larger the above-described effect is, and therefore, this is preferable. However, in order to incline the first suction surface and the first filter 16 as described above, it is necessary to reduce the gap between the first suction port 12 and the first filter holding member 22 and the members (for example, the blower fan 13, the heat exchanger 14, and the like) adjacent to the first suction port 12 and the first filter holding member 22, or to change the shape of the members adjacent to the first suction port 12 and the first filter holding member 22, for example. Alternatively, the size of the indoor unit main body 2 needs to be increased. Therefore, in order to house the indoor unit 1 within a predetermined size, the inclination angle of the first suction surface and the inclination angle of the first filter 16 are preferably set to 20 degrees or less, respectively.
In the present embodiment, the first filter 16 and the second filter 15 have the same size. For example, the first filter 16 and the second filter 15 are designed such that L15 is L16 when the width of the first filter 16 in the oblique direction (in other words, the length between the end 16a and the end 16b of the first filter 16) is L16 and the width of the second filter 15 in the oblique direction is L15. The air intake surface of the second air intake port 11 (in other words, the opening surface of the second air intake port 11, hereinafter referred to as "second air intake surface") is formed horizontally, and the second filter 15 is disposed horizontally. However, as shown in the embodiment and the modifications described below, the configuration of the indoor unit 1 is not limited to the above configuration.
< modification 1>
As described above, in the present embodiment, the case where the indoor unit main body 2 has the first suction port 12 and the second suction port 11 is exemplified. However, the problem described in fig. 9 similarly occurs when only the lower surface of the indoor unit of the air conditioner is provided with the air inlet provided with the air cleaning filter.
Further, the indoor unit 1 is disposed at a relatively high position in the air-conditioned space, for example, near the ceiling. Therefore, by providing the first suction port 12 including the first filter 16 on the lower surface of the indoor unit 1, the air cleaning effect can be improved and the amount of air sucked can be increased as compared with an indoor unit of a conventional air conditioner in which an air cleaning filter is provided only on the upper surface of the indoor unit.
Therefore, the present embodiment can also be applied to a case where only the first suction port 12 including the first filter 16 is provided on the lower surface of the indoor unit 1 serving as an air suction port.
< modification 2>
In the present embodiment, a case where the first filter 16 and the second filter 15 are, for example, HEPA filters is explained as an example. However, the present embodiment is not limited to this, and the first Filter 16 and the second Filter 15 may be Ultra Low vapor deposition Air Filter (ULPA), and one of the first Filter 16 and the second Filter 15 may be a HEPA Filter, and the other may be an ULPA Filter. Further, an air cleaning filter other than a HEPA filter, which is called a high-performance filter, may be used for at least one of the first filter 16 and the second filter 15.
For example, the ULPA filter can trap dust smaller in size (particle size) than the HEPA filter, and the collection rate of fine dust (air cleaning rate) is higher. On the other hand, the ULPA filter is less likely to pass air than the HEPA filter, and the air volume is reduced. The larger the amount of intake air, the larger the removal efficiency (air cleaning efficiency) of dust (fine dust). Thus, the HEPA filter has a higher air purification efficiency than the ULPA filter. The air cleaning filter used for the first filter 16 and the second filter 15 may be arbitrarily selected according to the purpose and the required performance, and is not limited to the HEPA filter.
[ second embodiment ]
Fig. 5 is a conceptual diagram illustrating the configuration of essential parts of the indoor unit 1 according to the present embodiment. As shown in fig. 5, in the indoor unit 1 of the present embodiment, the area of the first suction surface of the first suction port 12 and the area of the first filter 16 are larger than the area of the second suction surface of the second suction port 11 and the area of the second filter 15. Therefore, in the indoor unit 1 of the present embodiment, the area of the first suction surface in the first suction port 12 is larger than the area of the second suction surface in the second suction port 11, and the area of the first filter 16 is larger than the area of the second filter 15. The indoor unit 1 of the present embodiment is different from the indoor unit 1 of the first embodiment in this point. For example, as described above, the first filter 16 and the second filter 15 are designed such that L15 < L16 when the width of the first filter 16 in the oblique direction (in other words, the length between the end 16a and the end 16b of the first filter 16) is L16 and the width of the second filter 15 in the oblique direction is L15.
The width L15 of the second filter 15 in the indoor unit 1 according to the present embodiment is the same as the width L15 of the second filter 15 in the indoor unit 1 according to the first embodiment, and the area of the second filter 15 in the indoor unit 1 according to the present embodiment is the same as the area of the second filter 15 in the indoor unit 1 according to the first embodiment.
If the area of the first suction surface is increased, the area of the first filter 16 needs to be increased accordingly. The first filter 16 is formed to match the area of the first suction surface. The second filter 15 is formed to match the area of the second suction surface. In the present embodiment, the area of the first suction surface is designed to be 1.5 times the area of the second suction surface, and in accordance with this, the width L16 of the first filter 16 is set to be 1.5 times the width L15 of the second filter 15 so that the area of the first filter 16 is, for example, 1.5 times the area of the second filter 15.
According to the present embodiment, the cleaning rate of the air in the vicinity of the floor surface can be further improved by making the opening width (opening area) of the first suction surface wider than the opening width (opening area) of the second suction surface and making the area of the first filter 16 correspondingly wider than the area of the second filter 15. Therefore, the user can feel the cleaning effect of the air more.
In the present embodiment, the area of the first suction surface is 1.5 times the area of the second suction surface, and the area of the first filter 16 is 1.5 times the area of the second filter 15. The area of the first suction surface and the area of the first filter 16 may be set, for example, by considering the design including the size of the upper surface and the lower surface of the indoor unit main body 2, the shape of the member adjacent to the first filter holding member 22 for holding the first filter 16, the size of the gap between the members, and the like, the size of the indoor unit main body 2, and the like, and are not particularly limited.
[ third embodiment ]
Fig. 6 is a conceptual diagram illustrating the configuration of essential parts of the indoor unit 1 according to the present embodiment. Fig. 10 is a diagram showing another problem in the case where air inlets provided with air cleaning filters are provided on the upper surface and the lower surface of the indoor unit 200 of the air conditioner, as shown in fig. 8 (a) and (b).
As described above, the indoor unit of the air conditioner is disposed at a relatively high position in the air-conditioned space, for example, near the ceiling. Therefore, from the viewpoint of improving the air cleaning effect and increasing the amount of air sucked, it is preferable to maintain the circulation performance of air on the lower surface side of the indoor unit of the air conditioner. In particular, when furniture is disposed from behind in an air-conditioned space of an indoor unit, in which an air conditioner is previously installed, such as a rental house, the furniture may become the obstacle depending on the height of the disposed furniture.
Meanwhile, an indoor unit of an air conditioner is generally installed by a manufacturer, and a processing specification of an indoor unit of an air conditioner sold in the market is written with a notice so as to be installed at a distance of a certain distance or more from a ceiling. Therefore, a certain space is often secured on the upper surface side of the indoor unit of the air conditioner. However, due to various things, the indoor unit must be mounted on the ceiling or the like, and the distance may not be sufficiently secured. As described above, the air intake port is formed horizontally, and when the air cleaning filter is disposed horizontally, the speed vector of the intake is mostly formed in the vertical direction.
Therefore, as shown in fig. 10, when the gap between the indoor unit 200 of the air conditioner and the ceiling is narrow, if the air inlet is horizontally provided on the upper surface as in the indoor unit 200, the ceiling becomes an obstacle, and the suction efficiency decreases. Therefore, when there is an obstacle above and below the indoor unit 200 of the air conditioner, there is a possibility that both the upper suction and the lower suction cannot function normally.
The indoor unit 1 according to the first and second embodiments can obtain an air cleaning effect even if an obstacle is present directly below the indoor unit 1, for example, while maintaining at least the circulation performance of air on the lower surface side of the indoor unit 1. However, when it is assumed that the indoor unit 1 has to be mounted on a ceiling or the like and an obstacle exists directly above the indoor unit 1, it is preferable to maintain the circulation performance of the air on the upper surface side of the indoor unit 1 in order to suppress a decrease in the suction efficiency at the time of the upward suction.
Therefore, as shown in fig. 6, in the indoor unit 1 according to the present embodiment, for example, in the indoor unit 1 according to the first embodiment, the second suction surface of the second suction port 11 is inclined such that the end 11b of the second suction surface on the rear surface side of the indoor unit main body 2 is positioned above the end 11b of the second suction surface on the front surface side of the indoor unit main body 2. The second filter 15 is inclined such that an end portion 15b on the rear surface side of the indoor unit main body 2 on the surface facing the second suction port 11 of the second filter 15 (in other words, the rear surface side upper end of the second filter 15) is positioned above an end portion 15a on the front surface side of the indoor unit main body 2 on the surface facing the front surface side (in other words, the front surface side upper end of the second filter 15).
Therefore, according to the indoor unit 1 of the present embodiment, even when the indoor unit 1 has to be mounted on the ceiling, the passage of the wind (air) can be enlarged while securing the gap between the second suction port 11 and the ceiling (obstacle). Further, since the second suction surface and the second filter 15 are inclined as described above, the velocity vector of suction into the indoor unit 1 is formed not only in the vertical direction but also in the horizontal direction, although the second filter 15 is linearly arranged. Therefore, air is more easily sucked than in the case where most of the velocity vector of suction of the indoor unit 1 is formed in the vertical direction. Therefore, even if an obstacle is present directly above the indoor unit 1, the air circulation performance can be maintained.
Further, as the second suction surface and the second filter 15 are inclined as described above, as shown in fig. 6, the width L11 in the inclined direction in the second suction port 11 (in other words, the length between the end 11a on the front surface side and the end 11b on the rear surface side of the indoor unit main body 2 in the second suction port 11) is larger than the projection width L11' of the inclined direction to the horizontal plane in the second suction port 11 (in other words, the length in the horizontal direction between the end 11a on the front surface side and the end 11b on the rear surface side of the indoor unit main body 2 in the second suction port 11). Namely, L11> L11'.
Therefore, since the second suction surface and the second filter 15 are inclined as described above, the second suction surface is formed horizontally, and the opening width (opening area) of the second suction surface can be increased even if the horizontal width (L11') of each second suction surface is the same as compared with the case where the second filter 15 is disposed horizontally. As a result, the air blowing resistance is reduced and the air volume is increased. The air sucked from the second suction port 11 is blown out from the blow-out port 17 via the blower fan 13 and the heat exchanger 14. Therefore, when the amount of air sucked in from the second suction port 11 increases, the speed (wind speed) of the air blown out from the blow-out port 17 increases, and the air blown out from the blow-out port 17 reaches a distance. Therefore, the cleaning rate of the air in the air-conditioned space (air-cleaning space) can be improved.
The inclination angle of the second suction surface is preferably the same as the inclination angle of the second filter 15, but may be different.
The inclination angle of the second suction surface and the inclination angle of the second filter 15 are preferably the same as the inclination angle of the first suction surface and the inclination angle of the first filter 16, and the effect described above is preferably increased as the inclination angles are increased. However, in order to incline the second suction surface and the second filter 15 in the same manner as the first suction surface and the first filter 16, it is necessary to reduce the gap between the second suction port 11 and the second filter holding member 21 and the members (for example, the blower fan 13, the heat exchanger 14, and the like) adjacent to the second suction port 11 and the second filter holding member 21, or to change the shape of the members adjacent to the first suction port 12 and the first filter holding member 22, for example. Alternatively, the size of the indoor unit main body 2 needs to be increased. Therefore, in order to house the indoor unit 1 within a predetermined size, the inclination angle of the second suction surface and the inclination angle of the second filter 15 are preferably set to 20 degrees or less, respectively.
As described above, according to the present embodiment, it is possible to provide the indoor unit 1 which can maintain the air circulation performance even when obstacles are present above and below the indoor unit 1 and which has a higher air cleaning effect than the conventional indoor unit 1.
It should be noted that, although fig. 6 illustrates an example in which the second suction surface of the second suction port 11 and the second filter 15 in the indoor unit 1 according to the first embodiment are inclined, it goes without saying that the second suction surface of the second suction port 11 and the second filter 15 in the indoor unit 1 according to the second embodiment may be inclined as described above. This can simultaneously obtain the effects of the second embodiment.
[ conclusion ]
An indoor unit 1 of an air conditioner according to embodiment 1 of the present invention includes a main body (indoor unit main body 2) having a blow-out port 17 for blowing out air, the main body having a first intake port 12 for sucking in air on a lower surface, and has a first air cleaning filter (first filter 16) inside the first suction port 12, the air intake surface of the first intake port 12 is inclined such that an end 12a of the intake surface on the front side of the main body is located above an end 12b of the intake surface on the rear side of the main body, the first air cleaning filter is inclined such that an end 16a of the first air cleaning filter on the front surface side of the main body on the surface facing the first suction port 12 is positioned above an end 16b of the first air cleaning filter on the rear surface side of the main body on the surface facing the first suction port.
According to the above configuration, it is possible to provide an indoor unit of an air conditioner that can maintain air circulation performance even when an obstacle is present directly below the indoor unit 1 of the air conditioner and has an air purification effect higher than that of the conventional air conditioner.
In the indoor unit 1 of an air conditioner according to embodiment 2 of the present invention, in embodiment 1 described above, the main body may have a second suction port 11 through which air is sucked in an upper surface thereof, and a second air cleaning filter (second filter 15) inside the second suction port 11, an area of an air suction surface of the first suction port 12 may be larger than an area of an air suction surface of the second suction port 11, and an area of the first air cleaning filter may be larger than an area of the second air cleaning filter.
According to the above configuration, the cleaning rate of the air near the floor surface can be further improved.
In the indoor unit 1 of an air conditioner according to embodiment 3 of the present invention, in the above-described embodiment 1, the main body may have a second suction port 11 through which air is sucked in an upper surface thereof, and a second air cleaning filter (second filter 15) may be provided inside the second suction port 11, the suction surface of the air in the second suction port 11 may be inclined such that an end 11b of the suction surface on a rear surface side of the main body is positioned above an end 11a of the suction surface on a front surface side of the main body, and the end 15b of the second air cleaning filter on a surface opposite to the second suction port 11 on the rear surface side of the main body may be positioned above an end 11a of the opposite surface on the front surface side of the main body.
According to the above configuration, even when obstacles are present above and below the indoor unit 1 of the air conditioner, the air circulation performance can be maintained.
In the indoor unit 1 of an air conditioner according to embodiment 4 of the present invention, in the above-described embodiment 1, the main body may have a second suction port 11 through which air is sucked in an upper surface thereof, and a second air cleaning filter (second filter 15) inside the second suction port 11, an area of a suction surface of air at the first suction port 12 may be larger than an area of a suction surface of air at the second suction port 11, an area of the first air cleaning filter may be larger than an area of the second air cleaning filter, an air suction surface of the second suction port 11 may be inclined such that an end 11b of the suction surface on a rear surface side of the main body is positioned above an end 11a of the suction surface on a front surface side of the main body, and an end 15b of the second air cleaning filter on a rear surface side of the main body, which is opposed to the second suction port 11, may be positioned above an end 15a of the suction surface side of the main body The end 11a of the facing surface on the front side of the main body is inclined upward.
According to the above configuration, even when obstacles are present above and below the indoor unit 1 of the air conditioner, the cleaning rate of air near the floor surface can be further improved while maintaining the air circulation performance.
In the indoor unit 1 of an air conditioner according to embodiment 5 of the present invention, in any one of the above-described embodiments 1 to 4, the first air purifying filter may be a HEPA filter.
The HEPA filter has a thickness of, for example, 30mm and is arranged linearly. Further, the HEPA filter has a high collection rate of fine dust (air cleaning rate) and a high efficiency of removing fine dust (air cleaning efficiency). In the case where the first air cleaning filter is a HEPA filter, the indoor unit 1 can be preferably applied.
In the indoor unit 1 of an air conditioner according to embodiment 6 of the present invention, in any one of the above-described embodiments 2 to 4, the first air cleaning filter and the second air cleaning filter may be HEPA filters, respectively.
The HEPA filter has a thickness of, for example, 30mm and is arranged linearly. Further, the HEPA filter has a high collection rate of fine dust (air cleaning rate) and a high efficiency of removing fine dust (air cleaning efficiency). In the case where the first air cleaning filter and the second air cleaning filter are HEPA filters, the indoor unit 1 can be preferably applied.
The present invention is not limited to the above embodiments, and various modifications can be made within the scope shown in the claims, and embodiments obtained by appropriately combining technical means disclosed in different embodiments are also included in the technical scope of the present invention. Further, new technical features can be formed by combining the technical means disclosed in the respective embodiments.
Description of the reference numerals
1 … indoor machine (indoor machine of air conditioner)
2 … indoor machine main body part (main body part)
11a, 11b, 12a, 12b, 15a, 15b, 16a, 16b … end
15 … second filter
16 … first filter
Claims (6)
1. An indoor unit of an air conditioner, characterized in that,
an indoor unit of an air conditioner includes a main body having an outlet for blowing air,
the main body part has a first suction port through which air is sucked at a lower surface thereof, and a first air cleaning filter inside the first suction port,
the air intake surface of the first air intake port is inclined such that an end portion of the air intake surface on the front surface side of the main body is positioned above an end portion of the air intake surface on the rear surface side of the main body, and the first air cleaning filter is inclined such that an end portion of the air intake surface on the front surface side of the main body, which is opposite to the first air intake port, of the first air cleaning filter is positioned above an end portion of the air intake surface on the rear surface side of the main body.
2. The indoor unit of an air conditioner according to claim 1,
the main body part has a second suction port for sucking air on the upper surface, and a second air cleaning filter on the inner side of the second suction port,
the area of the air suction surface of the first suction port is larger than the area of the air suction surface of the second suction port, and the area of the first air cleaning filter is larger than the area of the second air cleaning filter.
3. The indoor unit of an air conditioner according to claim 1,
the main body part has a second suction port for sucking air on the upper surface, and a second air cleaning filter on the inner side of the second suction port,
the air suction surface of the second suction port is inclined such that an end portion of the suction surface on the rear side of the main body is positioned above an end portion of the suction surface on the front side of the main body, and the second air cleaning filter is inclined such that an end portion of the second air cleaning filter on the rear side of the main body, which is on the surface opposite to the second suction port, is positioned above an end portion of the suction surface on the front side of the main body.
4. The indoor unit of an air conditioner according to claim 1,
the main body part has a second suction port for sucking air on the upper surface, and a second air cleaning filter on the inner side of the second suction port,
an area of a suction surface of the air of the first suction port is larger than an area of a suction surface of the air of the second suction port, an area of the first air cleaning filter is larger than an area of the second air cleaning filter, and,
an air suction surface of the second suction port is inclined such that an end portion of the suction surface on a rear surface side of the main body is positioned above an end portion of the suction surface on a front surface side of the main body,
the second air cleaning filter is inclined such that an end portion of the second air cleaning filter on a rear surface side of the main body portion on a surface of the second air cleaning filter facing the second suction port is positioned above an end portion of the second air cleaning filter on a front surface side of the main body portion on the facing surface.
5. The indoor unit of an air conditioner according to any one of claims 1 to 4,
the first air purification filter is a HEPA filter.
6. The indoor unit of an air conditioner according to any one of claims 2 to 4,
the first air purification filter and the second air purification filter are HEPA filters, respectively.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018113080 | 2018-06-13 | ||
| JP2018-113080 | 2018-06-13 | ||
| PCT/JP2019/007938 WO2019239649A1 (en) | 2018-06-13 | 2019-02-28 | Indoor unit for air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112292570A true CN112292570A (en) | 2021-01-29 |
Family
ID=68841794
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201980038934.5A Withdrawn CN112292570A (en) | 2018-06-13 | 2019-02-28 | Indoor unit of air conditioner |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPWO2019239649A1 (en) |
| CN (1) | CN112292570A (en) |
| WO (1) | WO2019239649A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112628871A (en) * | 2020-12-12 | 2021-04-09 | 安徽美博智能科技有限公司 | Air conditioner with air purification function |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001324159A (en) * | 2000-05-16 | 2001-11-22 | Matsushita Electric Ind Co Ltd | Indoor unit of air conditioner |
| JP2004028487A (en) * | 2002-06-27 | 2004-01-29 | Fujitsu General Ltd | Air conditioner |
| CN101256008A (en) * | 2007-03-01 | 2008-09-03 | 海尔集团公司 | Indoor set of air-conditioner with filtering net dust collector |
| CN101581476A (en) * | 2008-05-13 | 2009-11-18 | 乐金电子(天津)电器有限公司 | Wall-type air conditioner |
| JP2016161241A (en) * | 2015-03-03 | 2016-09-05 | シャープ株式会社 | Filter unit |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53112168U (en) * | 1977-02-15 | 1978-09-07 | ||
| JPS5810822U (en) * | 1981-07-15 | 1983-01-24 | 三菱電機株式会社 | filter |
| JP3861598B2 (en) * | 2001-01-10 | 2006-12-20 | 松下電器産業株式会社 | Air conditioner indoor unit |
| JP2002310448A (en) * | 2001-04-05 | 2002-10-23 | Fujitsu General Ltd | Air conditioner |
| JP4692571B2 (en) * | 2008-04-28 | 2011-06-01 | 株式会社富士通ゼネラル | Air conditioner |
-
2019
- 2019-02-28 JP JP2020525254A patent/JPWO2019239649A1/en active Pending
- 2019-02-28 CN CN201980038934.5A patent/CN112292570A/en not_active Withdrawn
- 2019-02-28 WO PCT/JP2019/007938 patent/WO2019239649A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001324159A (en) * | 2000-05-16 | 2001-11-22 | Matsushita Electric Ind Co Ltd | Indoor unit of air conditioner |
| JP2004028487A (en) * | 2002-06-27 | 2004-01-29 | Fujitsu General Ltd | Air conditioner |
| CN101256008A (en) * | 2007-03-01 | 2008-09-03 | 海尔集团公司 | Indoor set of air-conditioner with filtering net dust collector |
| CN101581476A (en) * | 2008-05-13 | 2009-11-18 | 乐金电子(天津)电器有限公司 | Wall-type air conditioner |
| JP2016161241A (en) * | 2015-03-03 | 2016-09-05 | シャープ株式会社 | Filter unit |
Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2019239649A1 (en) | 2021-06-24 |
| WO2019239649A1 (en) | 2019-12-19 |
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Application publication date: 20210129 |