Patent Application
20200240676
The present disclosure relates to an indoor unit of an air-conditioning apparatus embedded in or suspended from a ceiling located above an air-conditioned space, and more particularly to a structure of an airflow adjusting unit.
In an existing air-conditioning apparatus, an indoor unit is embedded in or suspended from a ceiling located above an air-conditioned space. As existing indoor units installed in such a manner, for example, the following indoor units are known. A given type of indoor unit includes an air inlet that is open at a substantially center portion of a lower surface of a casing, and four air outlets that are open in such a manner as to surround four sides of the air inlet in the lower surface, and can blow air subjected to heat exchange at a heat exchanger in four directions. Another type of indoor unit includes four air outlets and lateral airflow adjusting units that are provided in association with the respective four air outlets, and that adjust in a lateral direction, the angle of air blown from the air outlets (see, for example, Patent Literature 1).
To be more specific, blowout flow passages communicates with the air outlets, and allow air subjected to heat exchange at the heat exchanger to be sent to the air outlets. The lateral airflow adjusting units each include a plurality of lateral airflow adjusting plates arranged at defined intervals in the lateral direction in the blowout flow passages and a drive motor that swings the plurality of lateral airflow adjusting plates. The plurality of lateral airflow adjusting plates are swung, and inclination angles of the plurality of lateral airflow adjusting plates are changed, whereby the angle of the air blown from the air outlets can be adjusted in the lateral direction.
Patent Literature 1: Japanese Unexamined Patent Application Publication No. 2003-194389
In the indoor unit of the existing air-conditioning apparatus, drive motors of the lateral airflow adjusting units are arranged in such a manner as to communicate with the blowout flow passages. That is, in the indoor unit of the existing air-conditioning apparatus, the drive motors of the lateral airflow adjusting units are arranged such that they contact air subjected to heat exchange at the heat exchanger. Thus, for example, during a cooling operation, condensation occurs at a drive motor because of the difference between the temperature of air cooled at the heat exchanger and that of the drive motor heated. Also, for example, during a heating operation, the drive motor is heated by air heated at the heat exchanger. As a result, the temperature of the drive motor rises. In such a manner, in the indoor unit of the existing air-conditioning apparatus, the temperature of the air subjected to heat exchange at the heat exchanger affects the drive motors of the lateral airflow adjusting units, thereby worsening the durability of the drive motors.
The present disclosure is applied to solve the above problem, and relates to an indoor unit of an air-conditioning apparatus that can ensure the durability of drive motors of lateral airflow adjusting units.
An indoor unit of an air-conditioning apparatus according to the present disclosure includes: a casing having an air inlet and an air outlet that are provided as openings formed in a lower surface portion of the casing; a fan housed in the casing to suction air in an air-conditioned space from the air inlet into the casing and blow the air from the air outlet; a heat exchanger housed in the casing to cause heat exchange to be performed between refrigerant that flows in the heat exchanger and the air sucked into the casing; and a lateral airflow adjusting unit that adjusts in a lateral direction, adjust the angle of air that is blown from the air outlet. In the casing, a suction flow passage and a blowout flow passage are provided. The suction flow passage causes the air inlet and the heat exchanger to communicate with each other, and the blowout flow passage causes the heat exchanger and the air outlet to communicate with each other. The lateral airflow adjusting unit includes a plurality of lateral airflow adjusting plates that are arranged in the blowout flow passage at defined intervals in the lateral direction, and a drive device that includes a drive motor and swing the plurality of lateral airflow adjusting plates with power generated by the drive motor. The casing includes a accommodating chamber isolated from the blowout flow passage and communicating with the suction flow passage. The drive motor is accommodated in the accommodating chamber.
The indoor unit of an air-conditioning apparatus according to the present disclosure can prevent the drive motor of the lateral adjusting unit from being affected by the temperature of air subjected to heat exchange at the heat exchanger. Thus, the indoor unit of the air-conditioning apparatus according to the present disclosure can ensure the durability of the drive motor of the lateral airflow adjusting unit.
Embodiments of an air-conditioning apparatus according to the present disclosure will be described in detail.
An indoor unit 100 of an air-conditioning apparatus according to Embodiment 1 is embedded in or suspended from a ceiling located above an air-conditioned space such as a room. The indoor unit 100 includes a casing 1 having an air inlet 2 and air outlets 3 that are provided as openings formed in a lower surface portion of the casing 1. It should be noted that in Embodiment 1, for example, four air outlets 3 are formed. The casing 1 is, for example, a hollow box having a substantially rectangular cuboid shape. The air inlet 2 is open, for example, in a substantially center portion of the lower surface portion of the casing 1. The four air outlets 3 are located in such a manner as to surround four sides of the air inlet 2. Each of the air outlets 3 is, for example, rectangular, and is provided such that long sides of each air outlet 3 extend along an associated one of sides of the lower surface portion of the casing 1. The air inlet 2 includes a suction grille 2a and a filter 9.
In the casing 1, a fan 6 is provided to face the air inlet 2, and is a centrifugal fan such as a turbo fan. For example, as viewed in plan view, a central axis of the fan 6 is located at substantially the same position as the center of the air inlet 2. The fan 6 sucks air in the air-conditioned space from the air inlet 2 into the casing 1, and blows the air from the air outlets 3. In the casing 1, a heat exchanger 7, which is, for example, of a fin-and-tube type, is also provided to surround the fan 6. The heat exchanger 7 causes heat exchange to be performed between refrigerant that flows in the heat exchanger 7 and air in the air-conditioned space that is sucked into the casing 1 by the fan 6.
The heat exchanger 7 is located outward of the air inlet 2 and inward of the air outlets 3, as viewed in plan view. To be more specific, the casing 1 includes a suction flow passage 4 through which the air inlet 2 and the heat exchanger 7 communicate with each other, and blowout flow passages 5 through which the heat exchanger 7 and the air outlets 3 communicate with each other. Thus, the fan 6 is rotated to cause air in the air-conditioned space to be sucked into the casing 1 from the air inlet 2 and to flow into the heat exchanger 7 through the suction flow passage 4, as suction air 101 and blowout air 102 indicated by arrows in
In Embodiment 1, since the number of the air outlets 3 is four, that of the blowout flow passages 5 is also four. Each blowout flow passage 5, as well as each air outlet 3, has, for example, a rectangular cross section, and is located such that long sides of each blowout flow passage 5 extend along an associated one of the sides of the lower surface portion of the casing 1. The indoor unit 100 according to Embodiment 1 also includes a bell mouth 8 between the air inlet 2 and the fan 6, and the bell mouth 8 guides to the fan 6, the air in the air-conditioned space that is sucked from the air inlet 2 into the suction flow passage 4.
In the indoor unit 100 according to Embodiment 1, in each of the blowout flow passages 5, a vertical airflow adjusting plate 51 and a plurality of lateral airflow adjusting plates 41 are provided in such a manner as to be swingable and also provided to adjust the angle of conditioned air that is blown from an associated one of the air outlets 3.
The vertical airflow adjusting plate 51 adjusts in a vertical direction, the angle of the conditioned air that is blown from the associated air outlet 3. The vertical airflow adjusting plate 51 extends in the longitudinal direction of the blowout flow passage 5. The vertical airflow adjusting plate 51 is swung in the vertical direction around its rotation axis extending in the longitudinal direction of the blowout flow passage 5. This swinging operation of the vertical airflow adjusting plate 51 in the vertical direction can be performed by a drive device such as a drive motor. Thus, as an outer peripheral end of the vertical airflow adjusting plate 51 moves more upwards, the angle between a direction in which the conditioned air is blown from the air outlet 3 and a horizontal direction decreases. Furthermore, as the outer peripheral end of the vertical airflow adjusting plate 51 moves more downwards, the conditioned air is blown more downwards from the air outlet 3.
The plurality of lateral airflow adjusting plates 41 form a lateral airflow adjusting unit 40, which will be described later. The lateral airflow adjusting unit 40 adjusts in the lateral direction, the angle of the conditioned air that is blown from the associated air outlet 3. To be more specific, in the air outlets 3, respective lateral airflow adjusting units 40 are provided. The plurality of lateral airflow adjusting plates 41 of each of the lateral airflow adjusting units 40 are arranged in an associated blowout flow passage 5 at defined intervals in the longitudinal direction (lateral direction) of the blowout flow passage 5. The lateral airflow adjusting plates 41 are arranged in the blowout flow passage 5 such that they are swingable. For example, lower ends of the lateral airflow adjusting plates 41 are swung in the lateral direction. Then, the conditioned air that is blown from the air outlet 3 is curved and blown in a direction in which the lower ends of the lateral airflow adjusting plates 41 are moved. The lateral airflow adjusting plates 41 are swung by power generated by a drive motor 45 of the lateral airflow adjusting unit 40, which will be described later. Also, the lateral airflow adjusting unit 40 will be described later in detail.
In Embodiment 1, an indoor unit body 10, a lateral airflow casement 20, and a decorative panel 30 form the casing 1.
The indoor unit body 10 is, for example, a box formed in the shape of a substantially rectangular cuboid that has chamfered corners as viewed in plan view. The indoor unit body 10 houses the fan 6, the heat exchanger 7, and the bell mouth 8. In the indoor unit body 10, a first suction flow passage 14 and first blowout flow passages 15 are provided. The first suction flow passage 14 forms part of the suction flow passage 4, and the first blowout flow passages 15 form part of the respective blowout flow passages 5. An end of the first suction flow passage 14 that is located opposite to the heat exchanger 7 is open, for example, in a substantially center portion of a lower surface portion of the indoor unit body 10. Ends of the first blowout flow passages 15 that are located opposite to the heat exchanger 7 are open in the lower surface portion of the indoor unit body 10 such that the ends of the first blowout flow passages 15 surround four sides of an opening portion of the first suction flow passage 14. At an outer periphery of the indoor unit body 10, fittings 11 are provided, and are used when the indoor unit body 10 is suspended from the ceiling located above the air-conditioned space.
The lateral airflow casement 20 is attached to a lower portion of the indoor unit body 10. The lateral airflow casement 20 has substantially the same shape as the indoor unit body 10 as viewed in plan view. To be more specific, the lateral airflow casement 20 is formed in the shape of a substantially rectangular cuboid that has chamfered corners as viewed in plan view. In the lateral airflow casement 20, a second suction flow passage 24 and second blowout flow passages 25 are formed. The second suction flow passage 24 forms part of the suction flow passage 4 and communicates with the first suction flow passage 14. The second suction flow passage 24 is a through hole formed in a substantially center portion of the lateral airflow casement 20 as viewed in plan view. The second blowout flow passages 25 form part of the blowout flow passages 5 and communicate with the first blowout flow passages 15. The second blowout flow passage 25 are through holes arranged in such a manner as to surround four sides of the second suction flow passage 24 as viewed in plan view.
Sealants 91 are provided on an upper surface portion of the lateral airflow casement 20. The sealant 91 is intended to isolate the suction flow passage 4 (the first suction flow passage 14 and the second suction flow passage 24) from the blowout flow passages 5 (the first blowout flow passages 15 and the second blowout flow passages 25) when the lateral airflow casement 20 is secured to the indoor unit body 10.
In Embodiment 1, the lateral airflow adjusting units 40, which will be described later, are provided in the lateral airflow casement 20. To be more specific, the lateral airflow adjusting plates 41 are arranged in the second blowout flow passages 25 such that they can be swung.
The decorative panel 30 is attached to a lower portion of the lateral airflow casement 20, and is, for example, a plate having a substantially rectangular shape. To be more specific, the decorative panel 30 forms the lower surface portion of the casing 1. The decorative panel 30 includes the air inlet 2, a third suction flow passage 34, third blowout flow passages 35, and the air outlets 3. The third suction flow passage 34 forms part of the suction flow passage 4 and communicates with the second suction flow passage 24 and the air inlet 2. The third suction flow passage 34 is a through hole formed in a substantially center portion of the decorative panel 30 as viewed in plan view. The third blowout flow passages 35 form part of the blowout flow passages 5 and communicates with the second blowout flow passage 25 and the air outlets 3. The third blowout flow passages 35 are through holes arranged in such a manner as to surround four sides of the third suction flow passage 34 as viewed in plan view.
Sealants 92 are provided on an upper surface portion of the decorative panel 30. The sealants 92 are intended to separate the suction flow passage 4 (the second suction flow passage 24 and the third suction flow passage 34) from the blowout flow passages 5 (the second blowout flow passages 25 and the third blowout flow passages 35) when the decorative panel 30 is secured to the lateral airflow casement 20.
In Embodiment 1, the vertical airflow adjusting plates 51 as described above are provided in the third blowout flow passages 35 such that they can be swung. Drive devices 52 that swing the respective vertical airflow adjusting plates 51 are provided on the decorative panel 30.
The indoor unit of the air-conditioning apparatus embedded in or suspended from the ceiling located above the air-conditioned space may be sometimes required not to include the lateral airflow adjusting units 40 in terms of cost reduction, etc. In such a case, from the indoor unit including the lateral airflow adjusting units, the lateral airflow adjusting units are removed. That is, the housing can be applied to both the case the lateral airflow adjusting units are necessary and the case where the lateral airflow adjusting units are not necessary. Thus, also in the indoor unit 100 according to Embodiment 1, the lateral airflow adjusting units 40 are removed when they are not necessary.
In the case where the indoor unit body 10 and the lateral airflow casement 20 are formed integrally with each other, that is, the lower part of the indoor unit body 10 is extended and is used as the lateral airflow casement 20, the lateral airflow adjusting units 40 are provided in the indoor unit body 10. In such a case, in the case where the lateral airflow adjusting units 40 are removed from the indoor unit 100, space is made in the indoor unit body 10. Thus, in the case where the lateral airflow adjusting units 40 are not necessary, the indoor unit body 10 formed integrally with the lateral airflow casement 20 is large in size more than necessary. That is, in the case where the indoor unit body 10 and the lateral airflow casement 20 are formed integrally with each other and the lateral airflow adjusting units 40 are not necessary, the indoor unit 100 is large in size more than necessary.
By contrast, in the indoor unit 100 according to Embodiment 1, the indoor unit body 10 and the lateral airflow casement 20 are formed as separate elements, and the lateral airflow adjusting units 40 are provided in the lateral airflow casement 20 as described above. Thus, in the indoor unit 100 according to Embodiment 1, in the case where the lateral airflow adjusting units 40 are not necessary, it suffices that the lateral airflow casement 20 is removed and the decorative panel 30 is attached to the lower part of the indoor unit body 10. Thereby, the indoor unit 100 is prevented from being large in size more than necessary in the case where the lateral airflow adjusting units 40 are not necessary.
Next, the lateral airflow adjusting units 40 will be described in detail.
Each of the lateral airflow adjusting units 40 includes the lateral airflow adjusting plates 41 as described above, a support base 42, a coupling member 43, and the drive device 44. The lateral airflow adjusting plates 41 are supported at a side surface portion of the support base 42 such that it can be swung. The support base 42 is attached to the lateral airflow casement 20 in the longitudinal direction of the second blowout flow passage 25. Because of the support base 42 is attached to the lateral airflow casement 20, the lateral airflow adjusting plates 41 are provided in the second blowout flow passage 25. In this case, in the second blowout flow passage 25, the lateral airflow adjusting plates 41 are located closer to an outer peripheral side of the lateral airflow casement 20 than the support base 42. In other words, in the second blowout flow passage 25, the support base 42 is located closer to an inner peripheral side of the lateral airflow casement 20 than the lateral airflow adjusting plates 41, that is, it is located closer to the second suction flow passage 24 than the lateral airflow adjusting plates 41.
The lateral airflow adjusting plates 41 are coupled to each other by the coupling member 43. The coupling member 43 is also connected to the drive device 44. In Embodiment 1, the coupling member 43 includes a first coupling member 43a that couples the lateral airflow adjusting plates 41 to each other, and a second coupling member 43b that couples the first coupling member 43a and the drive device 44 to each other.
The drive device 44 includes the drive motor 45 and a power transmission mechanism 46 that connects the drive motor 45 and the second coupling member 43b. The power transmission mechanism 46 is, for example, a gear, and transmits power generated by the drive motor 45 to the second coupling member 43b. To be more specific, when the drive motor 45 is rotated, a rotational power generated thereby is transmitted to the lateral airflow adjusting plates 41 by the power transmission mechanism 46 and the coupling member 43. Specifically, when the drive motor 45 is rotated in a certain rotational direction, lower end portions of the lateral airflow adjusting plates 41 are moved in a certain single direction. When the drive motor 45 is rotated in the opposite direction to the rotational direction, the lower end portions of the lateral airflow adjusting plates 41 are moved in the opposite direction to the above certain single direction. The drive device 44 having the above configuration is attached to the support base 42.
When the drive device 44 is attached to the support base 42, the drive motor 45 protrudes from the power transmission mechanism 46 toward the inner peripheral side of the lateral airflow casement 20 as viewed in plan view. In other words, as the drive motor 45 is viewed with respect to part of the support base 42 that supports the lateral airflow adjusting plates 41, the drive motor 45 protrudes from the above part of the support base 42 toward the inner peripheral side of the lateral airflow casement 20. A lid 47 is provided on a lower portion of the drive device 44.
The lateral airflow casement 20 includes accommodating chambers 21 on lateral sides of the respective second blowout flow passages 25. In other words, the accommodating chambers 21 are provided at respective corners of the lateral airflow casement 20 as the lateral airflow casement 20 is viewed from below. Furthermore, in other words, the accommodating chambers 21 are provided at the corners of the casing 1 as the housing 1 is viewed from the lower surface portion. The accommodating chambers 21 house the respective drive devices 44 when the lateral airflow adjusting units 40 are attached to the lateral airflow casement 20. The accommodating chambers 21 are recesses which are open on their lower side. The accommodating chambers 21 communicate with side end portions of the respective second blowout flow passages 25 when the drive devices 44 are not accommodated in the accommodating chambers 21.
By contrast, when a drive device 44 is accommodated in an associated accommodating chamber 21, as illustrated in
In this case, the lid 47 covers a lower opening of the accommodating chamber 21 such that only part of the lower opening that corresponds to the flow passage 22 is still open; that is, the part is not covered. The sealant 92 is provided between a lower surface portion of the lateral airflow casement 20 and an upper surface portion of the decorative panel 30 in such a manner as to surround an outer periphery of the second blowout flow passage 25, as indicated as a location range 92a by a two-dot chain line in
The first accommodating chamber 21a corresponds to the accommodating chamber of the present disclosure.
The flow passage that causes the first accommodating chamber 21a and the suction flow passage 4 to communicate with each other is not limited to the flow passage 22. For example, a through hole or a groove that causes the first accommodating chamber 21a and the suction flow passage 4 to communicate with each other may be formed in at least one of the lateral airflow casement 20 and the decorative panel 30 to serve as a flow passage that causes the first accommodating chamber 21a and the suction flow passage 4 to communicate with each other.
In order to form the lateral airflow adjusting unit 40 having the above configuration, first, the lateral airflow adjusting plates 41, the support base 42, the coupling member 43, and the drive device 44 are assembled into a single component. Then, the support base 42 is removably attached to the lateral airflow casement 20, for example, by screwing. To be more specific, the lateral airflow adjusting unit 40 of Embodiment 1 is removable as the assembled single component from the lateral airflow casement 20. For example, if the inside of the blowout flow passage 5 is soiled with, for example, dust, there is a case where the lateral airflow adjusting unit 40 must be removed to clean the inside of the blowout flow passage 5. In this case, in the indoor unit 100 according to Embodiment 1, the lateral airflow adjusting unit 40 can be removed as the assembled single component from the lateral airflow casement 20. It is therefore possible to improve the cleanability. Also, in the indoor unit 100 according to Embodiment 1, for example, if the lateral airflow adjusting plate 41 is damaged, the lateral airflow adjusting unit 40 can be removed as the assembled single component from the lateral airflow casement 20 in order that the lateral airflow adjusting plate 41 be replaced by a new one. In such a manner, in the indoor unit 100 according to Embodiment 1, the lateral airflow adjusting unit 40 can be attached to and removed as the assembled single body from the lateral airflow casement 20, thereby improving the maintainability.
Next, the operation of the indoor unit 100 according to Embodiment 1 will be described.
As the suction air 101 and the blowout air 102 indicated by arrows in
In this case, the angle of the conditioned air that is blown from the air outlet 3 can be adjusted in the vertical direction by adjusting the inclination angle of the vertical airflow adjusting plate 51. Also, the angle of the conditioned air that is blown from the air outlet 3 can be adjusted in the lateral direction by adjusting the inclination angle of the lateral airflow adjusting plate 41. That is, by adjusting the inclination angles of the vertical airflow adjusting plate 51 and the lateral airflow adjusting plate 41, it is possible to adjust the angle of the conditioned air that is blown from the air outlet 3, in the vertical and lateral directions, to set the angle to an arbitrary angle.
The inclination angles of the vertical airflow adjusting plate 51 and the lateral airflow adjusting plate 41 may be fixed to fix the angle of the conditioned air that is blown from the air outlet 3. The vertical airflow adjusting plate 51 and the lateral airflow adjusting plate 41 may be continuously moved to continuously change the inclination angles of the vertical airflow adjusting plate 51 and the lateral airflow adjusting plates 41. Furthermore, as a whole, the vertical airflow adjusting plates 51 provided in the respective blowout flow passages 5 may be operated independently of each other, or operated in coordination with each other. Also, the lateral airflow adjusting plates 41 provided in the respective blowout flow passages 5 may be also operated independently of each other, or operated in interlock with each other.
As described above, in the indoor unit 100 according to Embodiment 1, the drive motor 45 of the lateral airflow adjusting unit 40 is provided in the first accommodating chamber 21a that is isolated from the blowout flow passage 5 and communicates with the suction flow passage 4. Thus, during the cooling operation, the drive motor 45 is not directly exposed to air cooled at the heat exchanger 7. Therefore, in the indoor unit 100 according to Embodiment 1, condensation water can be prevented from being generated at the drive motor 7 because of the difference in temperature between the air cooled by the heat exchanger 7 and the drive motor 45 heated. Also, during the heating operation, the drive motor 45 is not directly exposed to the air heated by the heat exchanger 7. Also, during the heating operation, the drive motor 45 is cooled by the air sucked into the suction flow passage 4. Thus, in the indoor unit 100 according to Embodiment 1, the temperature of the drive motor 45 can be prevented from being raised by the air heated by the heat exchanger 7.
In such a manner, in the indoor unit 100 according to Embodiment 1, it is possible to prevent the drive motor 45 from being affected by the temperature of the air subjected to heat exchange at the heat exchanger 7. Thus, the indoor unit 100 according to Embodiment 1 can ensure the durability of the drive motor 45. This advantage is not an advantage obtained only in the case where the indoor unit body 10, the lateral airflow casement 20, and the decorative panel 30 form the casing 1. For example, the advantage can also be obtained in the case where the indoor unit body 10 and the lateral airflow casement 20 are formed integrally with each other to form the casing 1. That is, it suffices that in the casing 1, the first accommodating chamber 21a is provided in such a manner as to be isolated from the blowout flow passage 5 and communicate with the suction flow passage 4. In this first accommodating chamber 21a, the drive motor 45 is provided. Because of this configuration, the above advantage can be obtained.
As described above, the indoor unit 100 according to Embodiment 1 includes the casing 1 having the air inlet 2 and the air outlets 3 that are provided as openings formed in the lower surface portion of the casing 1. The indoor unit 100 according to Embodiment 1 includes the fan 6, the heat exchanger 7, and the lateral airflow adjusting units 40. The fan 6 is provided in the casing 1 to suck air in the air-conditioned space from the air inlet 2 into the casing 1, and blow air from the air outlets 3. The heat exchanger 7 is provided in the casing 1 to cause heat exchange to be performed between the refrigerant that flows in the heat exchanger 7 and the air sucked into the casing 1. The lateral airflow adjusting units 40 adjust the angle of the air that is blown from the air outlets 3, in the lateral direction. To be more specific, the casing 1 includes the suction flow passage 4 that causes the air inlet 2 and the heat exchanger 7 to communicate with each other, and the blowout flow passages 5 that causes the heat exchanger 7 and the air outlets 3 to communicate with each other. The lateral airflow adjusting units 40 each includes the plurality of lateral airflow adjusting plates 41 that are arranged in an associated one of the blowout flow passages 5 at defined intervals in the lateral direction, and the drive device 44 that includes the drive motor 45 and swings the plurality of lateral airflow adjusting plates 41 with power generated by the drive motor 45. The casing 1 includes the first accommodating chambers 21a that are isolated from the respective blowout flow passages 5 and communicate with the suction flow passage 4. The drive motor 45 is accommodated in the first accommodating chamber 21a.
In the indoor unit 100 having the above configuration, the drive motor 45 can be prevented from being affected by the temperature of the air subjected to heat exchange at the heat exchanger 7. Thus, the indoor unit 100 according to Embodiment 1 can ensure the durability of the drive motor 45.
Furthermore, in the indoor unit 100 according to Embodiment 1, the first accommodating chambers 21a are provided at the respective corners of the casing 1 as the casing 1 is viewed from the lower surface portion side. The corners of the casing 1 are portions where it is hard to provide components of the indoor unit 100. Therefore, in Embodiment 1, since the first accommodating chambers 21a are provided at the respective corners of the casing 1 and accommodate the respective drive motors 45, the corners of the casing 1 can be effectively used.
As illustrated in, for example,
In the indoor unit 100 as illustrated in
As described above, the second accommodating chamber 21b communicates with the second blowout flow passage 25 that forms part of the blowout flow passage 5. The power transmission mechanism 46 of the lateral airflow adjusting unit 40 is accommodated in the second accommodating chamber 21b. Thus, the power transmission mechanism 46 is cooled by air cooled at the heat exchanger 7 during the cooling operation. The power transmission mechanism 46 is heated by air heated at the heat exchanger 7 during the heating operation. In the lateral airflow adjusting unit 40 as illustrated in
The position of the accommodating chamber 21 that accommodates the drive motor 45 of the lateral airflow adjusting unit 40 is not limited to the position as described regarding Embodiment 1. For example, the accommodating chamber 21 may be provided at a position as described below regarding Embodiment 2. It should be noted that in Embodiment 2, matters not described regarding Embodiment 2 and described regarding Embodiment 1 are the same as those described in Embodiment 1, and in the descriptions regarding Embodiment 2, functions and components that are the same as in Embodiment 1 will be denoted by the same reference signs.
In an indoor unit 100 according to Embodiment 2, each of the accommodating chambers 21 is provided between an associated second blowout flow passage 25 and the second suction flow passage 24 as the lateral airflow casement 20 is viewed from below. In other words, each accommodating chamber 21 is provided between an associated blowout flow passage 5 and the suction flow passage 4 as the casing 1 is viewed from a lower surface portion side thereof. When a drive device 44 is not provided in an associated accommodating chamber 21, an outer peripheral side portion of the accommodating chamber 21 communicates with an inner peripheral side portion of the second blowout flow passage 25. An inner peripheral side surface of the accommodating chamber 21 communicates with the second suction flow passage 24. It should be noted that in Embodiment 2, plate members 28 are provided to face the inner peripheral side surfaces of the accommodating chambers 21. The plate members 28 prevents, for example, an operator from touching the drive motors 45 accommodated in the respective accommodating chambers 21, and do not close spaces between the accommodating chambers 21 and the second suction flow passage 24. Thus, as illustrated in
In each of the lateral airflow adjusting units 40 according to Embodiment 2, the drive motor 45 and the power transmission mechanism 46 that forms the drive device 44 are located closer to an inner peripheral side of the lateral airflow casement 20 than part of the support base 42 that supports the lateral airflow adjusting plate 41.
The support base 42 has a wall 42c that protrudes toward the second suction flow passage 24. An outer peripheral surface of the wall 42c is shaped in accordance with the shape of an inner peripheral surface 21c of an opening portion of the accommodating chamber 21 that is located closer to the second blowout flow passage 25. The power transmission mechanism 46 has a wall 46a that protrudes toward the second blowout flow passage 25. An outer peripheral surface of the wall 42c, as well as the wall 42c, is shaped in accordance with the shape of the inner peripheral surface 21c of the opening port of the accommodating chamber 21 that is located closer to the second blowout flow passage 25. A distal end of the wall 42c of the accommodating chamber 21 is in contact with a distal end of the wall 46a of the power transmission mechanism 46. With the drive device 44 accommodated in the accommodating chamber 21, the wall 42c of the support base 42 and the wall 46a of the power transmission mechanism 46 are in contact with the inner peripheral surface 21c of the opening portion of the accommodating chamber 21 that is closer to the second blowout flow passage 25. Thereby, the second blowout flow passage 25 is isolated from the accommodating chamber 21. That is, the accommodating chamber 21 is isolated from the blowout flow passage 5. Thus, the drive motor 45 of the drive device 44 is isolated from the second blowout flow passage 25, that is, the blowout flow passage 5, and is accommodated in the accommodating chamber 21 that communicates with the suction flow passage 4.
In Embodiment 2, the accommodating chamber 21 corresponds to the accommodating chamber of the present disclosure.
In Embodiment 2, in order to improve the airtightness between the wall 42c of the support base 42 and the wall 46a of the power transmission mechanism 46 and the inner peripheral surface 21c of the accommodating chamber 21, a sealant 48 is provided between the wall portions 42c and 46a and inner peripheral surface 21c. Furthermore, in Embodiment 2, a sealant 42d is provided between the inner peripheral surface of the second blowout flow passage 25 and the support base 42 to improve the airtightness between the inner peripheral surface and the support base 42.
As described above, in the indoor unit 100 according to Embodiment 2, the drive motor 45 is accommodated in the accommodating chamber 21 that is isolated from the second blowout flow passage 25, that is, the blowout flow passage 5, and communicates with the suction flow passage 4. Thus, as in Embodiment 1, in the indoor unit 100 according to Embodiment 2 also, it is possible to prevent can also prevent the drive motor 45 from being affected by the temperature of air subjected to heat exchange at the heat exchanger 7. Thus, the indoor unit 100 according to Embodiment 2 can also ensure the durability of the drive motor 45 as in Embodiment 1.
In the indoor unit 100 according to Embodiment 2, the accommodating chamber 21 is provided closer to the suction flow passage 4 than in Embodiment 1. Thus, air in the accommodating chamber 21 of the indoor unit 100 according to Embodiment 2 is easily sucked by a fan 6 when the fan 6 is rotated, as compared with the first accommodating chamber 21a of Embodiment 1. Thus, the accommodating chamber 21 of the indoor unit 100 according to Embodiment 2 is located such that heat generated by the drive motor 45 cannot easily stay in the accommodating chamber 21 of the indoor unit 100, as compared with the first accommodating chamber 21a of Embodiment 1, thereby restricting an increase in the temperature of the drive motor 45. Therefore, the indoor unit 100 according to Embodiment 2 can also further improve efficiency of the drive motor 45 than the indoor unit 100 in Embodiment 1.
Also, as illustrated in
Specifically, in the indoor unit 100 according to Embodiment 2, the support base 42 of the lateral airflow adjusting unit 40 isolates the accommodating chamber 21 and the blowout flow passage 5 from each other. That is, the support base 42 is the component located in the region that communicates with the blowout flow passage 5. In the lateral airflow adjusting unit 40 according to Embodiment 2, the drive motor 45 and the power transmission mechanism 46 are accommodated in the accommodating chamber 21. That is, the drive motor 45 and the power transmission mechanism 46 are the components located in the region that communicates with the suction flow passage 4. The heat insulating material 93 is provided between the support base 42 and the power transmission mechanism 46. To be more specific, as illustrated in
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/JP2017/037636 | 10/18/2017 | WO | 00 |
