JP6541881B2 - Air conditioner, air conditioner and refrigeration cycle device - Google Patents

Description

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

  BACKGROUND Conventionally, an air conditioner and an indoor unit provided in an air conditioner provided with the air conditioner are known. For example, according to Japanese Patent Application Laid-Open No. 2010-117110 (Patent Document 1), a diffuser portion in which a portion of a vortex type casing from a blower outlet of a blower portion to a position adjacent to a heat exchanger is enlarged in height and width directions. An indoor unit is disclosed.

JP, 2010-117110, A

  In the conventional ceiling-embedded air conditioner, the width of the heat exchanger is larger than the width of the outlet of the air blowing unit, so the wind speed distribution passing through the heat exchanger is uneven in the width direction. For this reason, the pressure loss in the heat exchanger is increased, which causes the decrease in the driving efficiency of the fan and the increase in noise.

  However, in the indoor unit disclosed in Patent Document 1, the dimension of the spiral casing increases in the width direction toward the heat exchanger side. 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 path is rapidly expanded at the portion where the diffuser portion expands toward the heat exchanger side, the air flow is unlikely to spread along the wall surface of the air path. By providing the guide in the diffuser portion, the air flow can be easily expanded, but since the pressure loss is generated by the guide, it is difficult to sufficiently obtain the effect of improving the air flow by the expansion of the diffuser portion.

  In the region between the pair of vortex casings, the air flow is disturbed and vortices are easily generated. This also causes pressure loss.

  The present invention has been made in view of the above problems, and an object thereof is a high efficiency and low noise air conditioner by expanding an air flow along a diffuser portion, that is, a casing outlet port portion without providing a guide. An air conditioning apparatus and a refrigeration cycle apparatus.

The air conditioner of the present invention comprises 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. In the case, a partition member is provided which divides a first area in which the heat exchanger is located, and a second area in which the air blower is located and a third area between the casing outlet and the air outlet. A hollow box is disposed in at least a part of the third region. The hollow box has at least a part of the part facing the casing outlet of the first and second casings, and an opening communicating the inside of the casing outlet with the inside of the hollow box.
The air conditioner of the present invention comprises 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 smaller toward the case outlet. Become wider. In the case, a partition member is provided which divides a first area in which the heat exchanger is located, and a second area in which the air blower is located and a third area between the casing outlet and the air outlet.

  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.

FIG. 1 is a schematic perspective view of an air conditioner according to Embodiment 1. FIG. 2 is a schematic view showing an internal configuration of the air conditioner according to Embodiment 1. It is the schematic diagram which looked at the internal structure of the air conditioner concerning Embodiment 1 from the side of an air conditioner. It is a partial cross section schematic diagram in line segment AA of FIG. It is the schematic plan view which looked at the internal structure of the air conditioner concerning Embodiment 1 from upper direction. It is the schematic plan view which looked at the internal structure of the air conditioner concerning the modification of Embodiment 1 from upper direction. It is the schematic plan view which looked at the internal structure of the air conditioner concerning Embodiment 2 from upper direction. It is the schematic plan view which looked at the internal structure of the air conditioner concerning Embodiment 3 from upper direction. It is the schematic plan view which looked at the internal structure of the air conditioner concerning Embodiment 4 from upper direction. It is a block diagram of the air conditioning apparatus which concerns on Embodiment 5. FIG.

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

Embodiment 1
FIG. 1 is a schematic perspective view of an indoor unit as an air conditioner equipped with a multi-blade centrifugal fan according to a first embodiment of the present invention. FIG. 2: is a schematic diagram which shows the internal structure of the indoor unit as an air conditioner concerning Embodiment 1 of this 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 to FIG. 1 and FIG. 2, the indoor unit as an air conditioner is equipped with case 1 installed in the ceiling of the space of air-conditioning object. 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 shape. The 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 of the side portions 1 c of the case 1. The shape of the case outlet 2 may be any shape. The shape of the case outlet 2 is, for example, rectangular. Moreover, the case suction port 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 part 1c of case 1. The shape of the case suction port 8 may adopt any shape. The shape of the case suction port 8 is, for example, rectangular. The case suction port 8 may be provided with a filter for removing air. The case suction port 8 sucks in air, and the case blow-off port 2 opposed thereto blows out air.

  Inside the case 1 is provided a blower. The blower unit is provided to feed the air sucked into the case 1 from the case suction port 8 to the case blowout port 2. Further, inside the case 1, a heat exchanger 6 provided between the air blowing unit and the case outlet 2 is provided. Inside the other case 1, a fan motor 4 and partition members 10 and 12 (see FIG. 5) are provided. The partition members 10 and 12 will be described later.

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

  The fan motor 4 is supported by, for example, a motor support 4 a fixed to the top surface 1 a of the case 1. The fan motor 4 has a rotational 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 multi-blade centrifugal fan 3 is attached to the rotation axis X. In the indoor unit shown in FIG. 2, two fans 3 are attached to the rotation axis X. The fan 3 makes a flow of air 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, as shown in FIG. 3, the heat exchanger 6 is disposed between the air outlet 7 e of the air blower and the case air outlet 2. The heat exchanger 6 regulates the temperature of the air. The configuration and mode of the heat exchanger 6 are not particularly limited, and the well-known one is used in the first embodiment.

  In such a configuration, when the fan 3 rotates, the air in the room to be air conditioned is sucked into the case suction port 8. The air drawn into the inside of the case 1 is guided by the bell mouth 5 and drawn into the fan 3. Furthermore, 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 type casing 7 and is then blown out from the outlet 7 e (see FIG. 3) of the vortex type 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 of the case outlet 2 into the room.

  FIG. 4 is a schematic partial sectional view taken along line A-A in FIG. As shown in FIG. 4, the fan 3 includes a main plate 3a, a side plate 3c, and a plurality of wings 3d. The main plate 3a is disk-shaped and has a boss 3b at its center. The output shaft of the fan motor 4 is connected to the center of the boss 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 wings 3 d are provided so as to surround the rotation axis X from the main plate 3 a to the side plate 3 c. The plurality of wings 3d are provided in the same shape as each other. Each wing 3d is formed with a forward facing blade whose forward end is positioned in the rotational direction of the fan 3 and is located on the outer peripheral side of the inner peripheral side wing front end.

  FIG. 5 is a schematic plan view of the inside of the case 1 of FIG. 2 in the first embodiment as viewed from above. As shown in FIG. 5, the vortex type casing 7 is provided to surround the fan 3. Referring to FIGS. 3 and 5, vortex type casing 7 includes peripheral wall 7 a extending along the outer peripheral end of fan 3. Further, in the vortex type casing 7, tongue portions 7b are provided at one portion of the peripheral wall 7a. The vortex type casing 7 rectifies the air blown out of the fan 3. At least one vortex-type casing suction port 9 (see FIG. 2) is provided on the side wall 7c of the vortex-type casing 7, and a bell mouth 5 for guiding the air flow to the vortex-type casing suction port 9 is disposed. The bell mouth 5 is formed so as to surround the vortex type casing suction port 9. From a different point of view, the bellmouth 5 is disposed at a position facing the suction port of the fan 3. The bell mouth 5 rectifies the air flow flowing into the fan 3. The bell mouth 5 gradually decreases in inner diameter toward the downstream of the air flow direction.

  Each of the first casing 71 and the second casing 72 has a casing outlet 7d. The casing outlet portion 7d is disposed at a position facing the heat exchanger 6, that is, in the region of the heat exchanger 6 side (left side in the figure) relatively in the whole of the vortex type casing 7 of FIG. The end of the casing outlet 7d closest to the heat exchanger 6 is the outlet 7e, and air is blown out toward the heat exchanger 6 from here.

  The casing outlets 7d are arranged in a pair so as to face each other in the vertical direction in FIG. 5 in which the first casing 71 and the second casing 72 are arranged. The casing outlet 7d of each of the first casing 71 and the second casing 72 is narrowed as the distance between the casings approaches the case outlet 2, that is, toward the left in FIG. That is, the width of the pair of casing outlet 7d itself in the width direction (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 in FIG. It gets 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 one pair of casing blower outlet parts 7d becomes the minimum.

  Case 1 has a first area in which heat exchanger 6 is located. Further, the case 1 has a second area in which the blower is located. Furthermore, the case 1 has a third region as a space 11 sandwiched between the pair of casing outlets 7d. That is, the space in case 1 is divided into the first area, the second area, and the third area. The first area is generally the area on the left half of FIG. 5, and the second area is the area on the right half of FIG. The third region is a region sandwiched by a pair of opposing side surfaces 7g in the central portion in the vertical direction of FIG. 5 in which the pair of casing blow-out port portions 7d in FIG.

  As described above, the pair of casing blow-out portions 7 d have the opposite side surfaces 7 g which are the side surfaces facing the third region. The opposite side surface 7 g extends in an oblique direction with respect to the side surface portion 1 c of the case 1. Further, the pair of casing outlets 7 d have non-facing side surfaces 7 f that are the side surfaces opposite to the side facing the third region. The non-opposing side surface 7 f is the side surface closest to the side surface portion 1 c of the case 1 in the pair of casing outlet portions 7 d of FIG. 5. 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 are provided to partition the first area, and the second and third areas. That is, in the case 1, the partition member 10 extending in the vertical direction of FIG. 5 to partition the first region and the second region, and the vertical direction of FIG. 5 to partition the first region and the third region. And a partition member 12 extending along the pair of opposing 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 separate the first region and the third region. The partition member 12 has a second portion 12q extending in the diagonal direction of FIG. 5 so as to face along a pair of opposite side surfaces 7g of the casing outlet 7d. The partition member 12 also has a third portion 12r that divides the second region and the third region. The partition member 12 surrounds the space 11, which is the third region, by the third portion 12r that divides 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 divides the first region and the second region in the region between the vortex type casing 7 of FIG. 5 and the side surface portion 1c of the case 1. Further, the partition member 10 has a second portion 10 q disposed on the second region side of the partition member 12. The third portion 12r of the partition member 12 and the second portion 10q of the partition member 10 described above are disposed 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 separated from the first portion 10p of the partition member 10 that divides the first region and the second region. It is arranged at the same position in the left and right direction of 5. This is because the other partition member divides the second area and the third area. However, other partition members may be disposed, for example, on the right side of the figure, that is, on the case suction port 8 side of the above-described position. In this case, the pair of casing outlets 7d and the third area are arranged to straddle the first area and the second area in the left-right direction of FIG.

  FIG. 6 shows a modification of FIG. As shown in FIG. 6, the opposite side surface 7 g of the vortex casing 7 itself may be used as a part of the partition member 12, that is, a second part 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 12p and the third portion 12r of the partition member 12 are arranged to extend in the vertical direction of the figure, as in FIG.

  The partition members 10 and 12 may be formed of a generally known plate-like member, but may be formed of, for example, solid styrofoam.

  The dimension (height dimension) in the vertical direction of FIG. 3 of the space of the first to third regions partitioned by the partition members 10 and 12 is equal to or greater than the height dimension of the outlet 7e of the vortex type casing 7, It is preferable that the height of the partition members 10 and 12 be substantially equal.

Next, the operation and effect of the present embodiment will be described.
In the air conditioner according to the present embodiment, the distance (spacing) between the casing outlets 7 d of the pair of vortex casings 7 adjacent to each other among the plurality of vortex casings 7 approaches the case outlet 2. It becomes narrow. That is, the width of the pair of casing outlet 7 d itself in the width direction in which the pair of vortex casings 7 are lined up becomes wider as the case outlet 2 is approached. Therefore, the difference between the width of the casing outlet 7d and the width of the heat exchanger 6 in the width direction can be reduced. Therefore, a wide portion in the width direction of the heat exchanger 6 faces the casing outlet 7d and receives supply of air from the casing outlet 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 side of the casing outlet 7d can be made uniform.

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

  Further, in the air conditioner, the partition member 10 for partitioning the first region in which the heat exchanger 6 is located and the second region in which the air blower is located is provided, and between the pair of casing outlets 7d The partition member 12 which divides the 3rd area | region pinched between and the said 1st area | region is provided. For this reason, the inflow of air from the first area to the second area and the inflow of air from the first area to the third area can be suppressed, and the generation of air flow turbulence and vortices can be suppressed. Noise and pressure loss can be suppressed by suppressing the generation of turbulence and vortices in the air flow.

  Furthermore, the flow of air from the second area to the third area can be suppressed by having the other partition members 10 and 12 which divide the second area and the third area, and the turbulence of the air flow or the generation of a vortex is generated. Can be suppressed.

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

Second Embodiment
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 disposed in at least a part (approximately the whole in FIG. 7) of the space 11 as the third region. The hollow box 13 is formed of a flat box-like wall member 13a constituting the wall surface.

  The box wall member 13a of FIG. 7 is disposed at the same position as the partition member 12 of FIG. 5 in the same manner as FIG. That is, the box wall member 13a, similarly to the first portion 12p of the partition member 12, the first portion 13p extending in the vertical direction of FIG. A diagonally extending second portion 13q of FIG. 7 is provided to be opposed along a pair of opposed side surfaces 7g of 7d. Furthermore, the box wall member 13a has a third portion 13r that divides the second area and the third area.

  The second portion 13 q of the box wall member 13 a is in contact with the opposing side surfaces 7 g of the first casing 71 and the second casing 72. The box wall member 13a has an opening 13b in at least a part of the second portion 13q in contact with the opposite side surface 7g. The opening 13b is also formed in part of the opposite side 7g with which the box wall member 13a contacts. The opening 13b of the box wall member 13a and the opening of the opposite side 7g communicate with each other. The 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. Therefore, the opening 13 b communicates the inside of the pair of casing outlets 7 d with 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 other than the above, the same components will be denoted by the same reference numerals and the description thereof will not be repeated.

Next, the operation and effect of the present embodiment will be described.
In the present embodiment, the hollow box 13 has the opening 13b in the box wall member 13a, whereby the inside of the casing outlet 7d and the hollow 14 in the hollow box 13 communicate with each other. For this reason, the air reaching the inside of the one casing outlet 7d from the fan 3 can flow from there through one of the two openings 13b into the hollow 14. Thereby, the hollow box 13 can be functioned as a resonance box to suppress the generation of noise.

Third Embodiment
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 according to the present embodiment basically has the same configuration as the air conditioner according to the first embodiment. However, in the present embodiment, a portion of the first and second casings 71 and 72 facing each other in the casing outlet 7 d is a third region and a surface that becomes narrower as the distance approaches the case outlet 2. The surface on the side of the surface has a curved shape. That is, in the present embodiment, the opposing curved surface 7h, which is the surface on the side facing the third region of each of the pair of vortex casings 7 and corresponds to the opposing side surface 7g of the first embodiment, has a curved surface shape. ing. In this point, the present embodiment is different in configuration from the first and second embodiments in which the facing 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 other than the above, the same components will be denoted by the same reference numerals and the description thereof will not be repeated.

Next, the operation and effect of the present embodiment will be described.
In the present embodiment, since the facing curved surface 7h has a curved surface shape, the dimensions of the inside of the vortex type casing 7 with respect to the width direction in which the pair of vortex type casings 7 line up are the case from the case suction port 8 side. Smoothly increase toward the outlet 2 side. For this reason, rapid expansion of the air path does not occur inside the vortex type casing 7. Therefore, the separation of the air flow on the inner wall surface of the air passage inside the vortex type casing 7 is suppressed, and the pressure loss due to the separation can be reduced. Further, since the opposing curved surface 7h enlarges the dimension in the width direction of the vortex type casing 7 toward the case outlet 2 side, the blowout air flow can be sufficiently expanded at the outlet 7e of the vortex type casing 7 as in the first embodiment. It is possible to equalize the passing wind speed of the air supplied to the

  As described above, in the present embodiment, as in the first embodiment, the air flow from the heat exchanger 6 to the case outlet 2 side can be expanded without providing a guide, and is supplied to the heat exchanger 6 The passing wind speed of the air can be made uniform. Further, the pressure loss and noise inside the vortex type casing 7 due to the disturbance of the air flow to the heat exchanger 6 and the vortices can be reduced, and the driving efficiency of the fan 3 can be enhanced and the noise can be reduced.

Fourth Embodiment
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, the second region and the third region communicate with each other without any other partition member that divides the second region and the third region. 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. Although in FIG. 9 the pair of vortex-type casings 7 have the facing curved surfaces 7h as in FIG. 8, they may have a facing side surface 7g (see FIG. 5) instead of the facing curved surface 7h.

  Since the configuration of FIG. 9 is the same as the configuration of FIG. 5 other than the above, the same components will be assigned the same reference numerals and the description thereof will not be repeated.

Next, the operation and effect of the present embodiment will be described.
By communicating the third region with the second region as in the present embodiment, the portion of the space 11 sandwiched between the pair of vortex casings 7 is defined as a continuous region from the third region to the second region. It can be enlarged.

  As described above, basically, air flows from the case suction port 8 side to the fan 3 through the bell mouth 5, but in reality, a portion of the air is from the space 11 side to the fan 3 through the bell mouth 5 Flow into. At this time, if the second region and the third region are temporarily divided by the partition members 10 and 12, the inflow of the air flow from the space 11 side to the bell mouth 5 decreases, and the air flow flowing to the bell mouth 5 is biased. Will occur. This is because the inflow of the air flow from the space 11 side to the bellmouth 5 is equal to that of the bellmouth 5 by the relatively short distance between the bellmouth 5 and the partition members 10 and 12 which divide the second and third regions. This is because the amount of air flow from the suction port 8 side to the bell mouth 5 is smaller than that of the bell mouth 5.

  Therefore, as in the present embodiment, the partition members 10 and 12 for partitioning the second area and the third area are removed, and the space 11 is connected to the second area, whereby the first area and the third area The size of the area from the first portion 12p of the partition member 12 for partitioning the bell mouse 5 to the bell mouth 5, ie, the area where air can flow into the bell mouth 5 from the space 11 side, is larger than in the above-mentioned provisional case. can do. Therefore, the amount of air flow from the space 11 side to the bell mouth 5 increases, and the distribution of the air flow flowing to the bell mouth 5 can be made more uniform. Therefore, the inflow distribution of the air flow to the fan 3 can be improved.

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

Embodiment 5
FIG. 10 is a block diagram of the air conditioning apparatus according to the fifth embodiment. In the present embodiment, an air conditioning apparatus as a refrigeration cycle apparatus having an indoor unit 200 including the above-described air blowing unit 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 refrigerant pipes to constitute a refrigerant circuit. The refrigerant is circulated in the refrigerant circuit. Among the refrigerant pipes, a pipe through which a gas refrigerant (gas refrigerant) flows is referred to as a gas pipe 300. A pipe in which a refrigerant containing a liquid (including a liquid refrigerant or a gas-liquid two-phase refrigerant) flows is referred to as a liquid pipe 400.

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

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

  In addition, the outdoor heat exchanger 103 performs heat exchange between the refrigerant and air (air outside the room). For example, in the heating operation, it functions as an evaporator, and performs heat exchange between the low-pressure refrigerant flowing from the liquid pipe 400 and the air. In this case, in the outdoor heat exchanger 103, the refrigerant is evaporated and vaporized. 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. The outdoor heat exchanger 103 exchanges heat between the refrigerant and the air to condense and liquefy the refrigerant. In the outdoor heat exchanger 103, a normal propeller fan may be used as the outdoor air blower 104, but the blower unit described in the first to fourth embodiments is for efficient heat exchange between the refrigerant and the air. An outdoor fan 104 may be provided. Also for the outdoor fan 104, the operating frequency of the fan motor may be arbitrarily changed by the inverter device to finely change the rotational speed of the fan 3 as the blowing fan. The expansion device 105 is provided to adjust the pressure or the like of the refrigerant by changing the opening degree.

  On the other hand, the indoor unit 200 is configured by the load side heat exchanger 201 and the load side fan 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 from the gas pipe 300 and the air, condenses the refrigerant, and liquefies it (or gas-liquid two-phase formation). 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, in the cooling operation, the load-side heat exchanger 201 functions as an evaporator. For example, in the load side heat exchanger 201, heat exchange is performed between the refrigerant and the air that has been brought into a low pressure state by the expansion device 105. In this case, in the load-side heat exchanger 201, the refrigerant desorbs the heat of the air to evaporate the refrigerant by evaporation. The refrigerant vaporized from the load-side heat exchanger 201 flows out to the gas pipe 300 side. In addition, the indoor unit 200 is provided with a load-side blower 202 for adjusting the flow of air performing heat exchange. The operating speed of the load-side fan 202 is determined by, for example, the setting of the user. Although it does not specifically limit, the blowing part demonstrated in Embodiment 1-4 can also be used for the load side air blower 202. FIG.

  As described above, in the air conditioning apparatus according to the fifth embodiment, by using the air blowers described in the first to fourth embodiments for the outdoor unit 100 and further for the indoor unit 200, higher efficiency, lower noise, etc. are realized. can do.

  While the contents of the present invention have been specifically described with reference to the preferred embodiments, various modifications can be made by those skilled in the art based on the basic technical concept and teaching of the present invention. It is self-explanatory. For example, as an application example of the present invention, the present invention can be widely used in an indoor unit constituting a refrigeration cycle apparatus, for example, an indoor unit of an air conditioner as well as various apparatuses and facilities in which a centrifugal fan is installed.

  The features described in the above-described embodiments (each example included in the embodiments) may be applied as appropriate in a technically consistent range.

  It should be understood that the embodiments disclosed herein are illustrative and non-restrictive in every respect. The scope of the present invention is shown not by the above description but by the scope of claims, and is intended to include all modifications within the scope and meaning equivalent to the scope of claims.

  1 case, 1a upper surface portion, 1b lower surface portion, 1c side surface portion, 2 case outlet, 3 fans, 3a main plate, 3b boss portion, 3c side plate, 3d wing, 4 fan motor, 4a motor support, 5 bellmouth, 6 heat Exchanger, 7 vortex casing, 7a peripheral wall, 7b tongue, 7c sidewall, 7d casing outlet, 7e outlet, 7f non-facing side, 7g opposing side, 7h opposing curved surface, 8 case suction port, 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-way Valve, 103 outdoor heat exchanger, 104 outdoor fan, 105 throttle device, 200 indoor unit, 201 load side heat exchanger, 2 02 Load side blower, 300 gas piping, 400 liquid piping.

Claims (7)

A case including a case suction port for drawing air and a case outlet for blowing air;
A blower disposed in the case and configured to feed air sucked into the case from the case suction port to the case blow-out port;
A heat exchanger provided between the blower and the case outlet;
The blower includes first and second casings spaced apart from each other,
Each of the first and second casing viewed contains a casing discharge port at a position facing the heat exchanger,
The case includes a partition member that divides 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 outlet and outlet .
A hollow box is disposed in at least a part of the third region,
The hollow box has an opening for communicating the inside of the casing outlet with the inside of the hollow box in at least a part of a portion of the first and second casings facing the casing outlet . Air conditioner.   The air conditioner according to claim 1, further comprising another partition member that divides the second area and the third area.   The air conditioner according to claim 1, wherein the second area and the third area are in communication. Wherein in the said casing outlet portion in the first and second casing, the surface of the third region and facing the side has a curved shape, the air conditioner according to any one of claims 1 to 3 Machine. The width of the casing outlet in the width direction in which the first and second casings are arranged is such that the distance between the casing outlets in the first and second casings becomes narrower as approaching the case outlets. The air conditioner according to any one of claims 1 to 4, wherein the air conditioner is wider toward the case outlet.   An air conditioner comprising the air conditioner according to any one of claims 1 to 5.   The refrigerating cycle apparatus provided with the air conditioner of any one of Claims 1-6.

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