WO2018003103A1

WO2018003103A1 - Air conditioner, air conditioning device, and refrigeration cycle device

Info

Publication number: WO2018003103A1
Application number: PCT/JP2016/069553
Authority: WO
Inventors: 惇司河野; 池田　尚史
Original assignee: 三菱電機株式会社
Priority date: 2016-06-30
Filing date: 2016-06-30
Publication date: 2018-01-04
Also published as: JPWO2018003103A1; JP6541881B2

Abstract

Provided is a high-efficiency, low-noise air conditioner comprising a case (1), a blower section, and a heat exchanger (6). The blower section includes first and second casings (71, 72). Each of the first and second casings (71, 72) includes a casing discharge opening section (7d). The width of the casing discharge opening sections (7d), which is measured in the width direction in which the first and second casings (71, 72) are arranged side by side, increases toward a case discharge opening (2) so that the distance between the casing discharge opening sections (7d) of the first and second casings (71, 72) will decrease toward the case discharge opening (2). A partition member (12) is provided within the case (1), the partition member (12) defining a first region in which the heat exchanger (6) is located, a second region in which the blower section is located, and a third region located between the casing discharge opening sections (7d).

Description

Air conditioner, air conditioner and refrigeration cycle apparatus

The present invention relates to an air conditioner, an air conditioner including the air conditioner, and a refrigeration cycle apparatus.

Conventionally, an air conditioner and an indoor unit provided in an air conditioner including the air conditioner are known. For example, Japanese Patent Laid-Open No. 2010-117110 (Patent Document 1) discloses a diffuser unit in which a part of a vortex casing from a blower outlet of a blower unit to a position adjacent to a heat exchanger is expanded in a height direction and a width direction. An indoor unit is disclosed.

JP 2010-117110 A

In a conventional ceiling-embedded air conditioner, the width of the heat exchanger is larger than the width of the air outlet of the blower, and therefore the wind speed distribution passing through the heat exchanger is not uniform in the width direction. For this reason, the pressure loss in the heat exchanger increases, which causes a decrease in fan driving efficiency and an increase in noise.

However, in the indoor unit disclosed in Patent Document 1, the size in the width direction of the vortex casing increases toward the heat exchanger. For this reason, the difference of the dimension of the width direction of the blower outlet of a ventilation part and the dimension of the width direction of a heat exchanger becomes small. However, since the air passage suddenly expands at the portion where the diffuser portion expands toward the heat exchanger, the air flow hardly spreads along the air passage wall surface. By providing a guide in the diffuser portion, the airflow is easily expanded. However, pressure loss is generated by the guide, so that it is difficult to sufficiently obtain the effect of improving the airflow by expanding the diffuser portion.

Also, in the region sandwiched between a pair of vortex casings, the airflow is disturbed and vortices are likely to occur. This also causes pressure loss.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a highly efficient and low-noise air conditioner by enlarging an air flow along a diffuser portion, that is, a casing outlet, without providing a guide. An air conditioner and a refrigeration cycle apparatus are provided.

The air conditioner of the present invention includes a case, a blower, and a heat exchanger. The blower includes first and second casings. Each of the first and second casings includes a casing outlet. The width of the casing outlet in the width direction in which the first and second casings are arranged is closer to the case outlet so that the distance between the casing outlets in the first and second casings becomes narrower as it approaches the case outlet. Become wider. The case includes a partition member that partitions a first region in which the heat exchanger is located, a second region in which the air blower is located, and a third region between the casing outlets.

According to the present invention, the wind speed distribution in the heat exchanger is made uniform, and high efficiency and low noise can be achieved.

1 is a schematic perspective view of an air conditioner according to Embodiment 1. FIG. It is a schematic diagram which shows the internal structure of the air conditioner which concerns on Embodiment 1. FIG. It is the schematic diagram which looked at the internal structure of the air conditioner which concerns on Embodiment 1 from the side surface of the air conditioner. FIG. 4 is a partial cross-sectional schematic view taken along line AA in FIG. 3. It is the schematic plan view which looked at the internal structure of the air conditioner which concerns on Embodiment 1 from upper direction. It is the schematic plan view which looked at the internal structure of the air conditioner which concerns on the modification of Embodiment 1 from upper direction. It is the schematic plan view which looked at the internal structure of the air conditioner which concerns on Embodiment 2 from upper direction. It is the schematic plan view which looked at the internal structure of the air conditioner which concerns on Embodiment 3 from upper direction. It is the schematic plan view which looked at the internal structure of the air conditioner which concerns on Embodiment 4 from upper direction. FIG. 6 is a configuration diagram of an air-conditioning apparatus according to Embodiment 5.

Hereinafter, the present embodiment will be described with reference to the drawings. In the drawings, the same reference numerals indicate the same or corresponding parts.

Embodiment 1 FIG.
FIG. 1 is a schematic perspective view of an indoor unit as an air conditioner equipped with a multiblade centrifugal fan according to Embodiment 1 of the present invention. FIG. 2 is a schematic diagram showing an internal configuration of the indoor unit as the air conditioner according to Embodiment 1 of the present invention. FIG. 3 is a schematic view of the internal configuration of the air conditioner according to Embodiment 1 of the present invention as viewed from the side of the air conditioner.

As shown in FIGS. 1 and 2, an indoor unit as an air conditioner includes a case 1 installed behind the ceiling of a space to be air-conditioned. In addition, the shape of case 1 can employ | adopt arbitrary shapes. For example, as an example, the case 1 is formed in a rectangular parallelepiped shape. Case 1 includes an upper surface portion 1a, a lower surface portion 1b, and a side surface portion 1c.

A case outlet 2 is provided on one side of the side surface portion 1c of the case 1. Arbitrary shapes can be adopted as the shape of the case outlet 2. The shape of the case outlet 2 is, for example, a rectangular shape. Moreover, the case suction inlet 8 is formed in the surface on the opposite side to the surface in which the case blower outlet 2 was formed among the side surface parts 1c of the case 1. FIG. Arbitrary shapes can be adopted as the shape of the case suction port 8. The shape of the case suction port 8 is, for example, a rectangular shape. The case suction port 8 may be provided with a filter that removes air. The case inlet 8 sucks in air, and the case outlet 2 facing the case sucks out air.

* Inside the case 1 is equipped with a blower. The air blower is provided to send the air sucked into the case 1 from the case suction port 8 to the case blower outlet 2. In addition, a heat exchanger 6 provided between the blower and the case outlet 2 is provided inside the case 1. In addition, the case 1 includes a fan motor 4 and partition members 10 and 12 (see FIG. 5). The

partition members

10 and 12 will be described later.

The blower section includes a multiblade centrifugal fan 3 and a vortex casing 7 as a casing having a vortex shape, for example. The vortex casing 7 has a pair of a first casing 71 and a second casing 72 in the case 1 spaced apart from each other. The fans 3 are arranged inside each of a plurality of, for example, a pair of vortex casings 7. A bell mouth 5 is formed on the vortex casing 7. The fan 3 is disposed so as to face the opening (vortex casing suction port 9) defined by the bell mouth 5.

The fan motor 4 is supported by a motor support 4a fixed to the upper surface portion 1a of the case 1, for example. The fan motor 4 has a rotation axis X (see FIG. 3). The rotation axis X is disposed so as to extend in parallel to the surface of the side surface portion 1c on which the case suction port 8 is formed and the surface on which the case outlet 2 is formed. At least one multiblade centrifugal fan 3 is attached to the rotary shaft X. In the indoor unit shown in FIG. 2, two fans 3 are attached to the rotation shaft X. The fan 3 creates a flow of air that is sucked into the case 1 from the case suction port 8 and blown out from the case outlet 2 to the target space.

The heat exchanger 6 is disposed in the air flow path inside the case 1. Specifically, the heat exchanger 6 is arrange | positioned between the blower outlet 7e of the ventilation part, and the case blower outlet 2, as shown in FIG. The heat exchanger 6 adjusts the temperature of the air. In addition, the structure and aspect of the heat exchanger 6 are not specifically limited, In this Embodiment 1, a well-known thing is used.

In such a configuration, when the fan 3 rotates, the air in the air-conditioned room is sucked into the case suction port 8. The air sucked into the case 1 is guided by the bell mouth 5 and sucked into the fan 3. Further, in the fan 3, the sucked air is blown out to the outside in the radial direction of the fan 3. The air blown out from the fan 3 passes through the air passage inside the vortex casing 7 and is then blown out from the outlet 7 e (see FIG. 3) of the vortex casing 7 and supplied to the heat exchanger 6. The air supplied to the heat exchanger 6 is subjected to heat exchange and humidity adjustment when passing through the heat exchanger 6. Thereafter, air is blown out from the case outlet 2 into the room.

FIG. 4 is a schematic partial sectional view taken along line AA in FIG. As shown in FIG. 4, the fan 3 includes a main plate 3a, a side plate 3c, and a plurality of blades 3d. The main plate 3a is disk-shaped and has a boss 3b at the center. The output shaft of the fan motor 4 is connected to the center of the boss portion 3b. The fan 3 is rotated by the driving force of the fan motor 4 via the output shaft. The side plate 3c is provided to face the main plate 3a. The side plate 3c is formed in a ring shape. The plurality of blades 3d are provided so as to surround the rotation axis X from the main plate 3a toward the side plate 3c. The plurality of blades 3d are provided in the same shape. Each of the blades 3 d is formed by a forward blade that is positioned such that the blade trailing edge on the outer circumferential side from the blade leading edge on the inner circumferential side advances in the rotation direction of the fan 3.

FIG. 5 is a schematic plan view of the inside of the case 1 of FIG. As shown in FIG. 5, the vortex casing 7 is provided so as to surround the fan 3. Referring to FIGS. 3 and 5, vortex casing 7 includes a peripheral wall 7 a extending along the outer peripheral end of fan 3. Further, the vortex casing 7 has a tongue 7b at one location of the peripheral wall 7a. The vortex casing 7 rectifies the air blown from the fan 3. The side wall 7c of the vortex casing 7 is provided with at least one vortex casing suction port 9 (see FIG. 2), and a bell mouth 5 for guiding the airflow to the vortex casing suction port 9 is disposed. The bell mouth 5 is formed so as to surround the spiral casing suction port 9. If it says from a different viewpoint, the bellmouth 5 will be arrange | positioned in the position facing the suction inlet of the fan 3. FIG. The bell mouth 5 rectifies the airflow flowing into the fan 3. The bell mouth 5 has an inner diameter that gradually decreases toward the downstream of the airflow direction.

Each of the first casing 71 and the second casing 72 has a casing outlet 7d. The casing air outlet 7d is arranged at a position facing the heat exchanger 6, that is, in a relatively region on the heat exchanger 6 side (left side in the drawing) in the entire vortex casing 7 of FIG. The end of the casing outlet 7d closest to the heat exchanger 6 is the outlet 7e, from which air is blown toward the heat exchanger 6.

The casing air outlet 7d is disposed in a pair so as to face each other in the vertical direction of FIG. 5 in which the first casing 71 and the second casing 72 are arranged. As for the casing blower outlet part 7d of each of the first casing 71 and the second casing 72, the distance between them becomes narrower toward the case blower outlet 2, that is, toward the left side of FIG. That is, the width of the pair of casing outlets 7d themselves in the width direction (the vertical direction in FIG. 5) in which the first casing 71 and the second casing 72 are arranged is closer to the case outlet 2, that is, toward the left side in FIG. It is getting wider as you go. And in the blower outlet 7e, the dimension of the width direction of the casing blower outlet part 7d becomes the largest, and the space | interval of the width direction of a pair of casing blower outlet part 7d becomes the minimum.

Case 1 has a first region in which the heat exchanger 6 is located. Case 1 has the 2nd field where a blower part is located. Further, the case 1 has a third region as a space 11 sandwiched between a pair of casing outlets 7d. That is, the space in case 1 is divided into a first region, a second region, and a third region. In general, the first area is the left half area of FIG. 5, and the second area is the right half area of FIG. Further, the third region is a region sandwiched between a pair of opposed side surfaces 7g in the central portion in the vertical direction of FIG. 5 where the pair of casing outlets 7d of FIG.

As described above, the pair of casing outlets 7d has the opposite side surface 7g which is the side surface facing the third region. The opposing side surface 7 g extends in an oblique direction with respect to the side surface portion 1 c of the case 1. The pair of casing outlets 7d has a non-opposing side surface 7f that is a side surface opposite to the side facing the third region. The non-opposing side surface 7f is the side surface closest to the side surface portion 1c of the case 1 in the pair of casing air outlet portions 7d in FIG. The non-opposing side surface 7 f extends along the side surface portion 1 c of the case 1, that is, so as to extend substantially parallel to the side surface portion 1 c of the case 1.

In the case 1,

partition members

10 and 12 that partition the first region, the second region, and the third region are disposed. That is, in the case 1, the partition member 10 extending in the vertical direction of FIG. 5 so as to partition the first region and the second region, and the vertical direction of FIG. 5 so as to partition the first region and the third region. And a partition member 12 extending so as to face along a pair of opposed side surfaces 7g of the casing outlet 7d.

The partition member 12 has a first portion 12p extending in the vertical direction in FIG. 5 so as to partition the first region and the third region. The partition member 12 has the 2nd part 12q extended in the diagonal direction of FIG. 5 so that it may oppose along a pair of opposing side surface 7g of the casing blower outlet part 7d. Moreover, the partition member 12 has the 3rd part 12r which divides a 2nd area | region and a 3rd area | region. The partition member 12 surrounds the space 11 that is the third region by the third portion 12r that partitions the second region and the third region, and the first and

second portions

12p and 12q.

Further, the partition member 10 has a first portion 10p that partitions the first region and the second region in the region between the vortex casing 7 and the side surface portion 1c of the case 1 in FIG. Moreover, the partition member 10 has the 2nd part 10q arrange | positioned at the 2nd area | region side of the said partition member 12. FIG. The third portion 12r of the partition member 12 and the second portion 10q of the partition member 10 are arranged as other partition members that partition the second region and the third region.

The third portion 12r of the partition member 12, which is another partition member, and the second portion 10q of the partition member 10 are the same as the first portion 10p of the partition member 10 that partitions the first region and the second region, and FIG. 5 are arranged at the same position in the left-right direction. This is because the other partition member divides the second region and the third region. However, the other partition member may be arranged, for example, on the right side of the drawing, that is, on the case suction port 8 side from the above position. In this case, the pair of casing outlets 7d and the third region are arranged so as to straddle the first region and the second region in the left-right direction of FIG.

FIG. 6 shows a modification of FIG. As shown in FIG. 6, the opposed side surface 7 g itself of the vortex casing 7 may be used as a part of the partition member 12, that is, the second portion 12 q of the partition member 12. In FIG. 6, the partition member 12 a is configured to occupy a portion corresponding to the second portion 12 q along the opposing side surface 7 g of the partition member 12. However, also in FIG. 6, the first portion 12 p and the third portion 12 r of the partition member 12 are arranged so as to extend in the vertical direction of the drawing as in FIG. 5.

The

partition members

10 and 12 may be formed of a generally known plate-like member, but may be formed of, for example, solid foamed polystyrene.

The vertical dimension (height dimension) in FIG. 3 of the spaces of the first to third regions partitioned by the

partition members

10 and 12 is not less than the height dimension of the air outlet 7e of the vortex casing 7. It is preferable that the height of the

partition members

10 and 12 is substantially equal.

Next, the effect of this Embodiment is demonstrated.
In the air conditioner of the present embodiment, as the distance (interval) between the casing outlets 7d of the pair of adjacent vortex casings 7 among the plurality of vortex casings 7 approaches the case outlet 2. Narrow. That is, the width of the pair of casing outlets 7d itself in the width direction in which the pair of vortex casings 7 are arranged becomes wider as the case outlet 2 approaches. For this reason, the difference of the width | variety of the casing blower outlet part 7d regarding the said width direction and the width | variety of the heat exchanger 6 can be made small. For this reason, the wide part regarding the width direction of the heat exchanger 6 opposes the casing blower outlet part 7d, and will receive supply of the air from the casing blower outlet part 7d. That is, the area where the supply of air from the casing outlet 7d is not received in the width direction of the heat exchanger 6 is reduced. For this reason, the wind speed distribution flowing into the heat exchanger 6 from the casing outlet 7d side can be made uniform.

Also, the third region becomes narrower as it approaches the case outlet 2. Air flowing from the second region to the third region can be reduced. Therefore, even if the second portion 10q of the partition member 10 and the third portion 12r of the partition member 12 do not exist by the amount of the air flowing into the third region, the first direction that should originally flow. The amount of air from the two regions to the first region can be increased.

Moreover, in the said air conditioner, while the partition member 10 which divides | segments the 1st area | region where the heat exchanger 6 is located, and the 2nd area | region where a ventilation part is located is provided, between a pair of casing blower outlet parts 7d A partition member 12 is provided that partitions the third region sandwiched between the first region and the first region. For this reason, the inflow of air from the first region to the second region and the inflow of air from the first region to the third region can be suppressed, and turbulence of airflow and generation of vortices can be suppressed. By suppressing the turbulence of the air current and the generation of vortices, noise and pressure loss can be suppressed.

Furthermore, by having the

other partition members

10 and 12 that divide the second region and the third region, it is possible to suppress the inflow of air from the second region to the third region, and turbulence of airflow and generation of vortices Can be suppressed.

As described above, according to the present embodiment, the airflow from the heat exchanger 6 to the case outlet 2 can be expanded without providing a guide, and the passage of air supplied to the heat exchanger 6 can be achieved. The wind speed can be made uniform. Further, the turbulence of the air flow to the heat exchanger 6 and the pressure loss and noise due to the vortex are reduced, and the efficiency of driving the fan 3 and the noise can be reduced.

Embodiment 2. FIG.
FIG. 7 is a schematic plan view of the inside of the case 1 of the air conditioner according to Embodiment 2 as viewed from above. As shown in FIG. 7, the air conditioner of the present embodiment basically has the same configuration as the air conditioner of the first embodiment. However, in the present embodiment, the hollow box 13 is arranged in at least a part of the space 11 as the third region (substantially the whole in FIG. 7). The hollow box 13 is formed by a flat box-shaped wall member 13a constituting the wall surface.

7 is disposed at the same position as the partition member 12 in FIG. 5 in the same manner as in FIG. That is, the box wall member 13a includes a first portion 13p extending in the vertical direction in FIG. 7 so as to partition the first region and the third region, like the first portion 12p of the partition member 12, and the casing outlet portion. 7d and a second portion 13q extending in the oblique direction of FIG. 7 so as to face each other along a pair of opposing side surfaces 7g. Further, the box wall member 13a has a third portion 13r that partitions the second region and the third region.

The second portion 13q of the box wall member 13a is in contact with the opposing side surfaces 7g of the first casing 71 and the second casing 72, respectively. And the box wall member 13a has the opening part 13b in at least one part of the 2nd part 13q which contact | connects the opposing side surface 7g. The opening 13b is also formed in a part of the opposing side surface 7g with which the box wall member 13a contacts. The opening 13b of the box wall member 13a communicates with the opening of the opposing side surface 7g. A portion surrounded by the box wall member 13 a of the hollow box 13, that is, the inside is a hollow 14, and the hollow 14 is disposed at a position overlapping the space 11. For this reason, the opening 13b communicates the inside of each of the pair of casing outlets 7d and the inside of the hollow box 13, that is, the hollow 14.

Since the configuration of the air conditioner disclosed in FIG. 7 is the same as the configuration shown in FIG. 5 except for the above, the same components are denoted by the same reference numerals, and the description thereof will not be repeated.

Next, the effect of this Embodiment is demonstrated.
In this Embodiment, the hollow box 13 has the opening part 13b in the box wall member 13a, and, thereby, the inside of the casing blower outlet part 7d and the hollow 14 inside the hollow box 13 are connected. For this reason, the air which reached the inside of one casing blower outlet part 7d from the fan 3 can flow in the hollow 14 through one of the two opening parts 13b from there. As a result, the hollow box 13 can function as a resonance box, and the generation of noise can be suppressed.

Embodiment 3 FIG.
FIG. 8 is a schematic plan view of the inside of the case 1 of the air conditioner according to Embodiment 3 as viewed from above. As shown in FIG. 8, the air conditioner of the present embodiment basically has the same configuration as the air conditioner of the first embodiment. However, in the present embodiment, the portions of the casing air outlet 7d in the first casing 71 and the second casing 72 that face each other and become narrower as the distance from the case air outlet 2 approaches the third region and the surface. The surface on the side to be curved has a curved shape. That is, in the present embodiment, the opposing curved surface 7h corresponding to the opposing side surface 7g of the first embodiment, which is the surface of each of the pair of vortex casings 7 that faces the third region, has a curved shape. ing. In this respect, the present embodiment is structurally different from the first and second embodiments in which the opposing side surface 7g has a planar shape.

Since the configuration of the air conditioner disclosed in FIG. 8 is the same as the configuration shown in FIG. 5 except for the above, the same components are denoted by the same reference numerals, and the description thereof will not be repeated.

Next, the effect of this Embodiment is demonstrated.
In the present embodiment, since the opposing curved surface 7h has a curved surface shape, the dimensions inside the vortex casing 7 with respect to the width direction in which the pair of vortex casings 7 are arranged are from the case suction port 8 side to the case. It increases smoothly toward the outlet 2 side. For this reason, a sudden expansion of the air passage does not occur inside the vortex casing 7. Therefore, separation of the airflow on the inner wall surface of the air passage inside the vortex casing 7 is suppressed, and pressure loss due to separation can be reduced. Further, since the opposed curved surface 7h expands the widthwise dimension of the vortex casing 7 toward the case outlet 2 side, the blown airflow can be sufficiently expanded at the outlet 7e of the vortex casing 7, and the same as in the first embodiment. The passing air speed of the air supplied to can be made uniform.

As described above, the present embodiment can expand the airflow from the heat exchanger 6 to the case outlet 2 without providing a guide, and is supplied to the heat exchanger 6, as in the first embodiment. The passing air speed of air can be made uniform. Further, the turbulence of the air flow to the heat exchanger 6 and the pressure loss and noise inside the vortex casing 7 due to the vortex are reduced, and the drive 3 can be driven with high efficiency and low noise.

Embodiment 4 FIG.
FIG. 9 is a schematic plan view of the inside of the case 1 of the air conditioner according to Embodiment 4 as viewed from above. As shown in FIG. 9, the air conditioner of the present embodiment basically has the same configuration as the air conditioner of the first embodiment. However, in the present embodiment, there is no other partition member that partitions the second region and the third region, and the second region and the third region communicate with each other. That is, the partition member 10 has only the first portion 10p, and the partition member 12 has only the first portion 12p and the second portion 12q. In FIG. 9, the pair of vortex casings 7 has the opposed curved surface 7h as in FIG. 8, but may have a configuration having opposed side surfaces 7g (see FIG. 5) instead of the opposed curved surface 7h.

Since the configuration of FIG. 9 is the same as the configuration of FIG. 5 except for the above, the same components are denoted by the same reference numerals, and the description thereof will not be repeated.

Next, the effect of this Embodiment is demonstrated.
By connecting the third region to the second region as in the present embodiment, the portion of the space 11 sandwiched between the pair of vortex casings 7 is formed as a continuous region from the third region to the second region. Can be enlarged.

Basically, air flows from the case suction port 8 side to the fan 3 via the bell mouth 5 as described above, but in reality, a part of the air flows from the space 11 side to the fan 3 via the bell mouth 5. Flows in. At this time, if the second region and the third region are partitioned by the

partition members

10 and 12, the inflow amount of the airflow from the space 11 side to the bell mouth 5 is reduced and biased to the airflow flowing through the bell mouth 5. Occurs. This is because the inflow amount of airflow from the space 11 side to the bell mouth 5 is the amount corresponding to the relatively short distance between the bell mouth 5 and the

partition members

10 and 12 that partition the second region and the third region. This is because the amount of airflow from the suction port 8 side to the bell mouth 5 is reduced.

Therefore, by removing the

partition members

10 and 12 that divide the second region and the third region and connecting the space 11 to the second region as in the present embodiment, the first region and the third region The size of the region from the first portion 12p of the partitioning member 12 to the bell mouth 5, that is, the size of the region in which air can flow into the bell mouth 5 from the space 11 side is larger than that of the above tentative case. can do. For this reason, the amount of airflow flowing from the space 11 side to the bellmouth 5 increases, and the distribution of the airflow flowing through the bellmouth 5 can be made more uniform. Therefore, the inflow distribution of the airflow to the fan 3 can be improved.

As described above, the present embodiment can expand the airflow from the heat exchanger 6 to the case outlet 2 without providing a guide, and is supplied to the heat exchanger 6, as in the first embodiment. The passing air speed of air can be made uniform. Furthermore, the pressure loss in the fan 3 is reduced, and the driving efficiency of the fan 3 and the noise can be reduced.

Embodiment 5 FIG.
FIG. 10 is a configuration diagram of an air-conditioning apparatus according to Embodiment 5. In the present embodiment, an air conditioner as a refrigeration cycle apparatus having an indoor unit 200 including the above-described air blower and the like will be described. The air conditioner shown in FIG. 10 includes an outdoor unit 100 and an indoor unit 200. The outdoor unit 100 and the indoor unit 200 are connected by a refrigerant pipe to form a refrigerant circuit. A refrigerant is circulated in the refrigerant circuit. Among the refrigerant pipes, a pipe through which a gaseous refrigerant (gas refrigerant) flows is referred to as a gas pipe 300. A pipe through which a refrigerant containing liquid (including a liquid refrigerant or a gas-liquid two-phase refrigerant) flows is referred to as a liquid pipe 400.

The outdoor unit 100 includes a compressor 101, a four-way valve 102, an outdoor heat exchanger 103, an outdoor blower 104, and a throttle device (expansion valve) 105 in the present embodiment.

Compressor 101 compresses and discharges the sucked refrigerant. Here, the compressor 101 includes an inverter device and the like, and can arbitrarily change the capacity of the compressor 101 (the amount of refrigerant sent out per unit time) by arbitrarily changing the operation frequency. The four-way valve 102 switches the refrigerant flow path between the cooling operation and the heating operation based on an instruction from a control device (not shown).

The outdoor heat exchanger 103 performs heat exchange between the refrigerant and air (outdoor air). For example, it functions as an evaporator during heating operation, and performs heat exchange between the low-pressure refrigerant flowing from the liquid pipe 400 and the air. In this case, the outdoor heat exchanger 103 evaporates and vaporizes the refrigerant. Further, during the cooling operation, the outdoor heat exchanger 103 functions as a condenser. In this case, the refrigerant compressed in the compressor 101 flows into the outdoor heat exchanger 103 from the four-way valve 102 side. In the outdoor heat exchanger 103, heat is exchanged between the refrigerant and air, and the refrigerant is condensed and liquefied. In the outdoor heat exchanger 103, a normal propeller fan may be used as the outdoor blower 104. However, in order to efficiently perform heat exchange between the refrigerant and the air, the air blowing unit described in the above first to fourth embodiments. An outdoor fan 104 may be provided. Regarding the outdoor blower 104, the rotational speed of the fan 3 as the blower fan may be finely changed by arbitrarily changing the operating frequency of the fan motor by the inverter device. The expansion device 105 is provided to adjust the refrigerant pressure or the like by changing the opening degree.

On the other hand, the indoor unit 200 includes a load side heat exchanger 201 and a load side blower 202. The load side heat exchanger 201 performs heat exchange between the refrigerant and air. For example, it functions as a condenser during heating operation. In this case, the load-side heat exchanger 201 performs heat exchange between the refrigerant flowing in from the gas pipe 300 and the air, and condenses and liquefies the refrigerant (or gas-liquid two-phase). As a result, the liquefied refrigerant flows out from the load side heat exchanger 201 to the liquid pipe 400 side. On the other hand, during the cooling operation, the load-side heat exchanger 201 functions as an evaporator. For example, in the load-side heat exchanger 201, heat is exchanged between the refrigerant and air that have been brought to a low pressure state by the expansion device 105. In this case, in the load-side heat exchanger 201, the refrigerant is vaporized by causing the refrigerant to take heat of the air and evaporate it. The refrigerant evaporated from the load side heat exchanger 201 flows out to the gas pipe 300 side. Further, the indoor unit 200 is provided with a load-side blower 202 for adjusting the flow of air for heat exchange. The operating speed of the load-side blower 202 is determined by, for example, user settings. Although not particularly limited, the air blower described in Embodiments 1 to 4 can be used for the load-side blower 202.

As described above, in the air conditioner of the fifth embodiment, high efficiency and low noise are realized by using the air blowing unit described in the first to fourth embodiments for the outdoor unit 100 and further the indoor unit 200. can do.

Although the contents of the present invention have been specifically described above with reference to the preferred embodiments, those skilled in the art can adopt various modifications based on the basic technical idea and teachings of the present invention. It is self-explanatory. For example, as an application example of the present invention, it can be widely used not only for an indoor unit constituting a refrigeration cycle apparatus, for example, an indoor unit of an air conditioner, but also for various devices and facilities in which a centrifugal blower is installed.

The features described in the embodiments described above (each example included in the embodiments) may be applied so as to be appropriately combined within a technically consistent range.

The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

1 case, 1a upper surface, 1b lower surface, 1c side surface, 2 case outlet, 3, fan, 3a main plate, 3b boss, 3c side plate, 3d blade, 4 fan motor, 4a motor support, 5 bell mouth, 6 heat Exchanger, 7 vortex casing, 7a peripheral wall, 7b tongue, 7c side wall, 7d casing outlet, 7e outlet, 7f non-facing side, 7g facing side, 7h facing curved surface, 8 case inlet, 9 vortex

casing Suction port

10, 12, 12a Partition member, 11 space, 13 hollow box, 13a box wall member, 13b opening, 14 hollow, 71 first casing, 72 second casing, 100 outdoor unit, 101 compressor, 102 four sides Valve, 103 outdoor heat exchanger, 104 outdoor blower, 105 throttle device, 200 indoors , 201 load side heat exchanger, 202 load side blower 300 gas piping, 400 liquid pipe.

Claims

A case including a case inlet for sucking air and a case outlet for blowing air;
An air blower arranged in the case and configured to send air sucked into the case from the case suction port to the case outlet;
A heat exchanger provided between the blower and the case outlet,
The air blowing part includes first and second casings spaced apart from each other,
Each of the first and second casings includes a casing outlet at a position facing the heat exchanger,
The width of the casing outlet in the width direction in which the first and second casings are arranged is such that the interval between the casing outlets in the first and second casings becomes narrower as it approaches the case outlet. It gets wider as you get closer to the case outlet,
In the case, an air conditioner is provided that includes a partition member that partitions a first region in which the heat exchanger is located, a second region in which the air blower is located, and a third region between the casing outlets. Machine.
The air conditioner according to claim 1, further comprising another partition member that partitions the second region and the third region.
The air conditioner according to claim 1, wherein the second region and the third region communicate with each other.
A hollow box is disposed in at least a part of the third region,
The hollow box has an opening that communicates the inside of the pair of casing outlets and the inside of the hollow box in at least a part of a portion facing the outlet part of the first and second casings. The air conditioner according to any one of claims 1 to 3.
The portion of the first and second casings that becomes narrower as the distance between the casing outlets approaches the case outlet has a curved surface on the side facing the third region. 5. The air conditioner according to any one of 1 to 4.
An air conditioner comprising the air conditioner according to any one of claims 1 to 5.
A refrigeration cycle apparatus comprising the air conditioner according to any one of claims 1 to 6.