WO2015170402A1 - 空気調和機ユニット - Google Patents
空気調和機ユニット Download PDFInfo
- Publication number
- WO2015170402A1 WO2015170402A1 PCT/JP2014/062482 JP2014062482W WO2015170402A1 WO 2015170402 A1 WO2015170402 A1 WO 2015170402A1 JP 2014062482 W JP2014062482 W JP 2014062482W WO 2015170402 A1 WO2015170402 A1 WO 2015170402A1
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- WIPO (PCT)
- Prior art keywords
- fan
- heat exchange
- heat
- heat exchanger
- virtual setting
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/46—Component arrangements in separate outdoor units
- F24F1/48—Component arrangements in separate outdoor units characterised by air airflow, e.g. inlet or outlet airflow
- F24F1/50—Component arrangements in separate outdoor units characterised by air airflow, e.g. inlet or outlet airflow with outlet air in upward direction
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/14—Heat exchangers specially adapted for separate outdoor units
- F24F1/16—Arrangement or mounting thereof
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/14—Heat exchangers specially adapted for separate outdoor units
- F24F1/18—Heat exchangers specially adapted for separate outdoor units characterised by their shape
Definitions
- the present invention relates to an air conditioner unit that passes an airflow generated by rotation of a fan through a heat exchanger.
- heat exchange between the outside air and the refrigerant is performed by passing the air flow generated by the rotation of the fan through the heat exchanger. If the velocity distribution (wind velocity distribution) of the airflow passing through the heat exchanger is biased, the heat exchange efficiency in the heat exchanger will be reduced.
- the pipe diameter of the lower heat exchanger is made smaller than the pipe diameter of the upper heat exchanger (see Patent Documents 1 and 4), or the fin shape or the number of rows of the upper and lower heat exchangers are mutually equal.
- an air blower top blow type outdoor unit in which the ventilation resistance of the lower heat exchanger is made smaller than the ventilation resistance of the upper heat exchanger by making it different (see Patent Documents 2 and 4).
- an air conditioner top-blowing outdoor unit when the unit is viewed along the axis of the fan, the range in which the heat exchanger is arranged and the range in which the heat exchanger is not arranged in the rotation direction of the fan Exists.
- a wall panel for preventing the passage of wind is arranged in a range where no heat exchanger is arranged. Therefore, in the top blow type outdoor unit of the air conditioner, when the fan rotates, the air flow is supplied into the unit from the range where the heat exchanger is arranged, but the unit from the range where the heat exchanger is not arranged There is no supply of airflow to the inside. Thereby, in the top blow type outdoor unit of the air conditioner, an uneven wind speed distribution occurs in the rotation direction of the fan. If there is a deviation in the wind speed distribution and airflow disturbance around the fan, the fluctuation of the airflow around the blade becomes strong while the fan blade moves, and vibration and energy loss increase.
- the lower heat exchanger range is the same as the upper heat exchanger range or the upper heat exchanger range. Therefore, the deviation of the wind speed distribution in the rotation direction of the fan becomes large even in a region close to the fan. Therefore, in the conventional air conditioner top-blowing outdoor unit, noise and energy loss due to vibration when the fan rotates are increased.
- the range of the heat exchanger arranged on the side surface of the unit is expanded in the fan rotation direction, the deviation of the wind speed distribution in the fan rotation direction is reduced, but the maintenance work for the devices in the unit becomes difficult.
- the present invention has been made in order to solve the above-described problems.
- An air conditioner unit capable of reducing noise and improving energy efficiency and facilitating maintenance work is provided. The purpose is to obtain.
- An air conditioner unit includes a fan that rotates about an axis, and a heat exchanger that is disposed on a virtual setting plane that is disposed at a position shifted from the fan in the axial direction of the fan and that surrounds the axis.
- the heat exchanger is divided into a plurality of heat exchanging portions respectively present in a plurality of regions aligned in the axial direction of the fan, and the direction along the virtual setting plane in a plane perpendicular to the axis is set as the virtual setting plane.
- the length of each heat exchanging part in the circumferential direction of the virtual setting surface is longer as the heat exchanging part exists in a region near the fan.
- the deviation of the wind speed distribution in the fan rotation direction can be suppressed around the fan, and noise can be reduced and energy efficiency can be improved. Moreover, the range in which the heat exchange part does not exist can be secured, and the maintenance work can be facilitated.
- FIG. 6 is a sectional view taken along a plane VI in FIG. 5.
- FIG. 6 is a cross-sectional view along the plane VII in FIG. 5. It is typical sectional drawing along the plane VIII of FIG.
- FIG. 10 is a sectional view taken along a plane X in FIG. 9. It is sectional drawing along the plane XI of FIG. It is a principal part perspective view which shows the outdoor unit by Embodiment 3 of this invention. It is typical sectional drawing along the plane XIII of FIG. It is a principal part perspective view which shows the outdoor unit by Embodiment 4 of this invention. It is a schematic diagram which shows each fin in the heat exchange part of FIG. It is a principal part perspective view which shows the outdoor unit by Embodiment 5 of this invention. It is sectional drawing along the plane XVII of FIG.
- FIG. 22 is a cross-sectional view taken along a plane XXII in FIG. 21. It is sectional drawing which shows the other example of the heat exchange panel of the outdoor unit by Embodiment 6 of this invention. It is a principal part perspective view which shows the outdoor unit by Embodiment 7 of this invention.
- FIG. 29 is a schematic cross-sectional view along a plane XXIX in FIG. 28.
- FIG. 1 is a perspective view showing an air conditioner unit according to Embodiment 1 of the present invention.
- an air conditioner constitutes a refrigeration cycle by circulating a refrigerant between an indoor unit and an outdoor unit (air conditioner unit) 1.
- the outdoor unit 1 includes a housing 2 and an in-unit device 3 accommodated in the housing 2.
- the housing 2 includes a bottom plate 21, a top plate 22 positioned above the bottom plate 21, a plurality of support pillars 23 that are fixed to the outer periphery of the bottom plate 21 and support the top plate 22, the bottom plate 21, and the top plate
- a plurality of side panels 24 that form the side surfaces of the housing 2 are provided between the two.
- the shapes of the bottom plate 21 and the top plate 22 are substantially square, and four support pillars 23 are fixed to the four corners of the bottom plate 21 and the top plate 22. Therefore, in this example, the side surface of the housing 2 is formed by the four side panels 24.
- the in-unit device 3 includes a blower 31, a refrigeration cycle device 32 through which a refrigerant flows, and a drive control device (not shown) that controls driving of the blower 31 and the refrigeration cycle device 32.
- the refrigeration cycle equipment 32 includes a heat exchanger 321, a compressor, a solenoid valve, and a heat transfer tube (refrigerant tube) that are elements for configuring the refrigeration cycle.
- FIG. 2 is a perspective view showing a part of the blower 31, the heat exchanger 321 and the housing 2 of FIG.
- the blower 31 includes a fan 311 that rotates about an axis A along the height direction of the outdoor unit 1, and a fan motor (drive unit) 312 that is connected to the fan 311 and generates a driving force that rotates the fan 311. is doing.
- the fan 311 is arranged so as to be shifted upward with respect to the refrigeration cycle apparatus 32 in the direction along the axis A (the axial direction of the fan 311).
- the fan 311 is a propeller fan having a boss 313 arranged coaxially with the axis A and a plurality (four in this example) of blades 314 provided on the outer periphery of the boss 313.
- Each wing 314 is arranged away from each other in the circumferential direction of the boss 313.
- the fan motor 312 is disposed below the fan 311.
- a plurality of (in this example, two) regions 41 and 42 arranged in the direction along the axis A are set.
- the regions 41 and 42 are arranged in this order in the direction away from the fan 311.
- the heat exchanger 321 is divided into a plurality of heat exchange units 321a and 321b existing in the regions 41 and 42, respectively.
- the heat exchanging part 321 a existing in the area 41 is arranged closer to the fan 311 than the heat exchanging part 321 b existing in the area 42.
- the size of the region 41 is larger in the direction along the axis A than the size of the region 42.
- FIG. 3 is a top view showing the outdoor unit 1 when viewed along the axial direction of the fan 311 in FIG.
- FIG. 4 is a perspective view showing the outdoor unit 1 for explaining the respective circumferential lengths of the heat exchange parts 321a and 321b of FIG.
- the heat exchanger 321 is disposed around the axis A. Moreover, the heat exchanger 321 is arrange
- the virtual setting plane B is a plane parallel to the axis A. Further, when the heat exchanger 321 is viewed in the direction along the axis A (the axial direction of the fan 311), the virtual setting surface B appears as an endless encircling line surrounding the axis A (FIG.
- the virtual setting plane B is provided with a plurality of plane portions B1 to B4 that overlap each of the sides of the polygon surrounding the entire circumference of the axis A.
- four plane portions B1 to B4 of the virtual setting plane B are located on each of the square sides corresponding to the four side panels 24 of the housing 2.
- some devices for example, a compressor, a solenoid valve, etc.
- the heat exchanger 321 are arranged inside the virtual setting plane B.
- the lengths La and Lb of the heat exchange portions 321a and 321b in the circumferential direction of the virtual setting surface B As shown in FIG. 4, the heat exchange part existing in the region near the fan 311 is longer. That is, when the heat exchanger 321 is viewed in the direction along the axis A, the length La of the heat exchange unit 321a existing in the region 41 is longer than the region 41 in the region 42 farther from the fan 311. It is longer in the direction along the virtual setting plane B than the length of 321b (La> Lb).
- the positions of the respective one end portions of the heat exchanging portions 321a and 321b coincide with each other in the direction along the virtual setting plane B.
- the positions of the other end portions of 321a and 321b are different from each other.
- Each heat exchanging section 321a, 321b is provided in each heat transfer tube (refrigerant tube) arranged at intervals, and heat radiation arranged at intervals in the length direction of the heat transfer tubes. Each having a plurality of fins.
- heat exchange is performed between the refrigerant and the outside air while the refrigerant sequentially passes through the heat transfer tubes.
- Each of the heat exchange units 321a and 321b may include a plurality of heat transfer tubes arranged at intervals from each other and a plurality of fins arranged in a waveform between the heat transfer tubes.
- Each side panel 24 of the housing 2 collectively surrounds the axis A and the virtual setting surface B. In each of the regions 41 and 42, a range in which the heat exchange units 321a and 321b exist and a range in which the heat exchange units 321a and 321b do not exist are generated in the rotation direction C (FIG. 3) of the fan 311. .
- a portion covering a range where the heat exchange portions 321 a and 321 b exist is a panel ventilation portion 241 (FIG. 1) through which air (airflow) passes, and the heat exchange portions 321 a and 321 b.
- a portion covering a range where no air is present is a panel shielding portion 242 that prevents passage of wind (airflow).
- At least one of the side panels 24 has the panel shielding part 242, and the panel shielding part 242 covers a range where the heat exchange parts 321a and 321b do not exist.
- the panel ventilation part 241 as shown in FIG. 1, the grating
- the range in which the heat exchanger 321 does not exist in the rotation direction of the fan 311 is wider in the regions 41 and 42 that are farther from the fan 311 in the direction along the axis A.
- a part of the devices (for example, a compressor, a solenoid valve, and the like) disposed inside the virtual setting surface B is disposed in a region 42 that is farther from the fan 311 than the region 41 that is closest to the fan 311.
- a blowout port 221 is provided at the center of the top plate 22 as shown in FIG.
- a bell mouth 222 that surrounds the outlet 221 is fixed on the top surface of the top plate 22.
- the fan 311 is disposed inside the bell mouth 222.
- the bell mouth 222 is provided with a net 223 that covers the opening of the bell mouth 222.
- the outdoor unit 1 when the fan 311 rotates, as shown by an arrow V in FIG. 1, the fan 311 enters the housing 2 from the side surface of the housing 2, and passes from the inside of the housing 2 to the outside of the housing 2 through the outlet 221. A wind (airflow) is generated. Accordingly, the outdoor unit 1 is a so-called top blow type outdoor unit.
- the wind generated by the rotation of the fan 311 enters the casing 2 through the panel ventilation portion 241 of each side panel 24, passes through the heat exchanger 321, and then exits the casing 2 from the outlet 221.
- heat exchanger 321 heat is exchanged between the refrigerant passing through the heat transfer tube and the outside air by the wind from the panel ventilation portion 241 of the side panel 24 passing through the heat exchanger 321. In the range where the panel shielding part 242 of the side panel 24 is disposed, the inflow of wind from the side surface of the housing 2 into the housing 2 is prevented.
- FIG. 5 is a perspective view showing the outdoor unit 1 for explaining the wind speed distribution in each of the heat exchange units 321a and 321b of FIG. 6 is a cross-sectional view taken along the plane VI of FIG. 5, and FIG. 7 is a cross-sectional view taken along the plane VII of FIG.
- the airflow Va passing through the heat exchanging part 321 a existing in the region 41 close to the fan 311 is more than the airflow Vb passing through the heat exchanging part 321 b existing in the region 42 farther from the fan 311 than the region 41.
- the fan 311 flows into the housing 2 from a wide range in the rotation direction.
- the deviation of the velocity distribution of the air sucked into the housing 2 from the side surface of the housing 2 is larger in the rotation direction of the fan 311 than in the region 42 far from the fan 311. It is getting smaller. Therefore, when the fan 311 rotates, the deviation of the wind speed distribution in the rotation direction of the fan 311 is reduced around the fan 311, and the fluctuation of the airflow generated in the blade 314 is reduced.
- FIG. 8 is a schematic cross-sectional view along the plane VIII of FIG.
- FIG. 8 shows the wind speed distribution on the plane VIII of FIG. 2 at three locations where the distance from the fan 311 in the direction along the axis A is different from each other.
- the location closest to the fan 311 and the location closest to the fan 311 are the locations in the area 41, and the location farthest from the fan 311 is the area. 42.
- the wind speed distribution V1 at the location farthest from the fan 311 is formed by the airflow Vb that has passed through the heat exchange section 321b that exists only on one side in the housing 2 of FIG.
- the wind speed distribution is quickly biased on the side closer to the portion 321b.
- the airflow Vb that has passed through the heat exchanging portion 321b flows upward toward the fan 311 in the housing 2, and the airflow Va that has passed through the heat exchanging portions 321a existing on both sides of the housing 2 in FIG. Mix.
- the deviation of the wind speed distribution is a place farthest from the fan 311 (wind speed distribution V1), a place second closest to the fan 311 (wind speed distribution V2), and a place closest to the fan 311 ( In the order of the wind speed distribution V3), it becomes weaker as the fan 311 is approached. That is, when the air flow Vb flowing toward the fan 311 in the housing 2 is mixed with the air flow Va from the heat exchange unit 321a, the bias of the wind speed distribution is weakened, and the wind speed distribution V3 at the location closest to the fan 311 is The wind speed distribution is uniform in the rotation direction of the fan 311.
- the heat exchanger 321 is divided into a plurality of heat exchange portions 321 a and 321 b existing in a plurality of regions 41 and 42 arranged in the axial direction of the fan 311, and the circumferential direction of the virtual setting surface B Since the lengths La and Lb of the heat exchanging portions 321a and 321b are longer for the heat exchanging portion existing in the region close to the fan 311, the deviation of the wind speed distribution in the rotation direction of the fan 311 is reduced. Can be reduced around. Thereby, the fluctuation of the airflow in the blades 314 when the fan 311 rotates can be weakened, and the noise generated by the rotation of the fan 311 can be reduced.
- the energy efficiency of the fan 311 can be improved. Furthermore, since the range in which the heat exchanger 321 does not exist in the rotation direction of the fan 311 can be secured widely in the area 42 away from the fan 311 among the areas 41 and 42, the equipment in the housing 2 Maintenance work can be facilitated. In addition, by arranging the device in the housing 2 in the region 42 that is farther from the fan 311 than in the region 41, the installation space for the device in the housing 2 can be secured more reliably, and the surroundings of the fan 311 It is possible to reduce the influence of the equipment in the housing 2 on the deviation of the wind speed distribution in the case.
- FIG. FIG. 9 is a perspective view showing a main part of an outdoor unit 1 according to Embodiment 2 of the present invention.
- 10 is a cross-sectional view taken along the plane X in FIG. 9, and
- FIG. 11 is a cross-sectional view taken along the plane XI in FIG.
- the heat exchanging part 321a existing in the region 41 closest to the fan 311 is provided in all of the plural (in this example, four) flat surface parts B1 to B4 provided on the virtual setting surface B.
- the heat exchanging part 321a is arranged on all sides of the polygon (in this example, a rectangle) surrounding the axis A as shown in FIG. Has been.
- the heat exchanging part 321a is continuously arranged from one end of the heat exchanging part 321a along the circumferential direction of the virtual setting surface B and reaches the other end of the heat exchanging part 321a.
- a space between one end and the other end of the heat exchanging portion 321a in the circumferential direction of the virtual setting surface B that is, a range in which the heat exchanging portion 321a does not exist in the region 41 in the rotation direction of the fan 311) is possible. It is as narrow as possible.
- the heat exchanging part 321b existing in the area 42 farther from the fan 311 than the area 41 is arranged in the remaining plane parts B1 to B3 excluding any one of the plane parts B1 to B4 in the virtual setting plane B.
- the heat exchanging part 321b is also arranged continuously from one end of the heat exchanging part 321b along the circumferential direction of the virtual setting surface B, as shown in FIG. 11, and the heat exchanging part 321b. To the other end.
- the length of the heat exchange part 321a is longer than the length of the heat exchange part 321b in the circumferential direction of the virtual setting surface B. Therefore, the airflow Va passing through the heat exchanging part 321a close to the fan 311 is larger than the airflow Vb passing through the heat exchanging part 321b farther from the fan 311 than the heat exchanging part 321a from a wider range in the rotation direction of the fan 311. Will flow in.
- Other configurations are the same as those in the first embodiment.
- FIG. 12 is a perspective view showing a main part of an outdoor unit 1 according to Embodiment 3 of the present invention.
- FIG. 13 is a schematic cross-sectional view along the plane XIII of FIG.
- the heat exchanging part 321 a existing in the region 41 closest to the fan 311 has a plurality of heat exchange panels 322 arranged so as to overlap each other with the axis A inside.
- Ventilation resistance (pressure loss) ⁇ P [Pa] of the airflow Va passing through the heat exchanging part 321a existing in the region 41 closest to the fan 311 is the number of columns of the heat exchanging panels 322 in the heat exchanging part 321a.
- the virtual setting surface B is made uniform in the circumferential direction.
- the number of rows of the heat exchange panels 322 in the heat exchange unit 321a is the same in the circumferential direction of the virtual setting surface B. That is, in the heat exchange part 321a, the number of rows of the heat exchange panels 322 is the same number (in this example, two rows) at any position in the circumferential direction of the virtual setting surface B.
- Other configurations are the same as those in the first embodiment.
- the ventilation resistance ⁇ P in the heat exchanging portion 321 a existing in the region 41 closest to the fan 311 among the regions 41 and 42 is uniform in the circumferential direction of the virtual setting surface B. Further, it is possible to further reduce the deviation of the ventilation distribution in the rotation direction of the fan 311 around the fan 311. Further, it is possible to further suppress noise during rotation of the fan 311 and improve energy efficiency.
- FIG. 14 is a perspective view showing a main part of an outdoor unit 1 according to Embodiment 4 of the present invention.
- FIG. 15 is a schematic diagram showing the fins 324 in the heat exchange section 321a of FIG.
- a plurality of fins 324 provided in the heat transfer tube (refrigerant tube) through which the refrigerant passes are in the circumferential direction of the virtual setting surface B. They are arranged at a distance from each other.
- Each fin 324 is a plate arranged along the axis A perpendicular to the circumferential direction of the virtual setting plane B.
- the ventilation resistance ⁇ P [Pa] of the air flow Va passing through the heat exchange section 321a is about the circumferential direction of the virtual setting surface B. It is uniform.
- the fin pitch Fp is the same at any position in the circumferential direction of the virtual setting surface B.
- Other configurations are the same as those in the first embodiment.
- the fin pitch Fp in the heat exchange part 321a existing in the region 41 closest to the fan 311 among the regions 41 and 42 is the same at any position in the circumferential direction of the virtual setting surface B. Therefore, the airflow resistance ⁇ P of the airflow Va passing through the heat exchange part 321a can be easily equalized in the circumferential direction of the virtual setting plane B.
- the fin pitch Fp in the heat exchange part 321a is made the same in the circumferential direction of the virtual setting surface B, thereby uniformizing the ventilation resistance ⁇ P in the heat exchange part 321a in the circumferential direction of the virtual setting surface B.
- the ventilation resistance ⁇ P in the heat exchange part 321a is made uniform in the circumferential direction of the virtual setting surface B. You may do it.
- the configuration of the heat exchange unit 321a is a configuration in which a plurality of heat transfer tubes are arranged at intervals in the circumferential direction of the virtual setting surface B, and corrugated fins are provided between the heat transfer tubes.
- FIG. 16 is a perspective view showing a main part of an outdoor unit 1 according to Embodiment 5 of the present invention.
- FIG. 17 is a sectional view taken along a plane XVII in FIG.
- the heat exchange unit 321 a existing in the region 41 closest to the fan 311 has a heat exchange panel 322.
- the number of rows of the heat exchange panels 322 in the heat exchange section 321a is one row.
- the heat exchange panel 322 includes a plurality of heat transfer tubes (refrigerant tubes) 325 arranged at intervals in the direction along the axis A and arranged along the circumferential direction of the virtual setting surface B, and the circumference of the virtual setting surface B It has a plurality of fins 324 arranged in the direction at intervals from each other and provided in each heat transfer tube. Each fin 324 is disposed perpendicular to the circumferential direction of the virtual setting surface B and is disposed along the axis A. Each heat transfer tube 325 passes through each fin 324.
- heat transfer tubes heat transfer tubes
- the ventilation resistance ⁇ P [Pa] of the air flow Va passing through the heat exchanging portion 321a is adjusted by adjusting the cross-sectional shape and the cross-sectional size of each heat transfer tube 325 in the circumferential direction of the virtual setting surface B.
- the cross-sectional shape and the cross-sectional size of each heat transfer tube 325 are the same at any position in the circumferential direction of the virtual setting surface B.
- each heat transfer tube 325 is a circular tube having an outer diameter D.
- Other configurations are the same as those of the first embodiment.
- each heat transfer tube 325 is circular, but the cross-sectional shape of each heat transfer tube 325 may be a flat shape (eg, a rectangle).
- the cross-sectional shape of each heat transfer tube 325 is rectangular, as shown in FIG. 18, the dimensions of the short side D1 and the long side D2 of the rectangular cross section are the same in each heat transfer tube 325, and the long side D2 of the rectangle is
- Each heat transfer tube 325 is arranged perpendicular to the direction along the axis A. Even in this case, the ventilation resistance ⁇ P in the circumferential direction of the virtual setting surface B can be made uniform in the heat exchanging portion 321a.
- the number of rows of the heat exchange panels 322 in the heat exchange section 321a may be a plurality of rows.
- the cross-sectional shape and cross-sectional size of each heat transfer tube 325 may be different for each heat exchange panel 322.
- the number of rows of heat exchange panels 322 in the heat exchange section 321a is two
- the cross-sectional shape of each heat transfer tube 325 of one heat exchange panel 322 is circular
- the other heat The cross-sectional shape of each heat transfer tube 325 of the exchange panel 322 may be a rectangle.
- a plurality of heat transfer tubes 325 having different cross-sectional shapes may be incorporated in the common heat exchange panel 322.
- a heat transfer tube 325 having a rectangular cross-sectional shape and a heat transfer tube 325 having a circular cross-sectional shape may be arranged side by side on a common heat exchange panel 322.
- FIG. 21 is a perspective view showing a main part of an outdoor unit 1 according to Embodiment 6 of the present invention.
- FIG. 22 is a sectional view taken along a plane XXII in FIG.
- the heat exchange unit 321 a existing in the region 41 closest to the fan 311 has a heat exchange panel 322.
- the number of rows of the heat exchange panels 322 in the heat exchange unit 321a is one row.
- the heat transfer tubes 325 are arranged at intervals in the direction along the axis A.
- the ventilation resistance ⁇ P [Pa] of the air flow Va passing through the heat exchanging portion 321a is changed to the circumference of the virtual setting surface B.
- the center-to-center distance (heat transfer tube pitch) Dp of each heat transfer tube 325 is the same in the circumferential direction of the virtual setting surface B in the heat exchange unit 321a.
- the cross-sectional shape of each heat exchanger tube 325 is circular. Other configurations are the same as those of the fifth embodiment.
- the heat exchanging portion 321a has the circumference of the virtual setting surface B. It is possible to make the ventilation resistance ⁇ P in the direction uniform.
- each heat transfer tube 325 is circular. However, as shown in FIG. 23, the cross-sectional shape of each heat transfer tube 325 may be flat (for example, rectangular).
- FIG. FIG. 24 is a perspective view showing a main part of an outdoor unit 1 according to Embodiment 7 of the present invention.
- FIG. 25 is a main part perspective view showing the outdoor unit 1 for explaining the respective circumferential lengths of the heat exchanging parts 321a, 321b, 321c of FIG.
- the number of regions set in the heat exchanger 321 is three. That is, the heat exchanger 321 is provided with three regions 41 to 43 arranged in the direction along the axis A. Of the areas 41 to 43, the area 41 is the area closest to the fan 311, the area 42 is the area closest to the fan 311, and the area 43 is the area farthest from the fan 311.
- the heat exchanger 321 is divided into three heat exchange units 321a, 321b, and 321c that exist in the regions 41 to 43, respectively.
- the lengths La, Lb, and Lc of the heat exchange portions 321a, 321b, and 321c in the circumferential direction of the virtual setting surface B are the heat exchange portions that exist in the region 43 farthest from the fan 311 among the regions 41 to 43.
- the heat exchange part 321b existing in the area 42 closest to the fan 311 and the heat exchange part 321a existing in the area 41 closest to the fan 311 are longer in this order (La> Lb> Lc). That is, the lengths La, Lb, and Lc of the heat exchanging portions 321 a, 321 b, and 321 c in the circumferential direction of the virtual setting surface B are longer as the heat exchanging portion exists in a region near the fan 311.
- the heat exchanging parts 321a and 321b existing in the area 41 closest to the fan 311 and the area 42 closest to the fan 311 are all in the four plane parts B1 to B4 of the virtual setting plane B.
- the heat exchanging part 321c that is arranged and exists in the region 43 farthest from the fan 311 is arranged on the remaining three plane parts B1 to B3 excluding any of the four plane parts B1 to B4 of the virtual setting plane B.
- the compressor, the solenoid valve, and the heat transfer tube included in the refrigeration cycle device 32 are disposed in the regions 42 and 43 that are further away from the fan 311 than the region 41.
- a range in which the heat exchange units 321a, 321b, and 321c exist and a range in which the heat exchange units 321a, 321b, and 321c do not exist are generated in the rotation direction of the fan 311.
- a portion covering a range where the heat exchange units 321 a, 321 b, and 321 c exist is a panel ventilation unit (not shown) through which wind (airflow) passes, and the heat exchange unit A portion that covers a range where 321a, 321b, and 321c do not exist is a panel shielding portion 242 that blocks passage of wind (airflow).
- a panel ventilation unit not shown
- the heat exchange unit A portion that covers a range where 321a, 321b, and 321c do not exist is a panel shielding portion 242 that blocks passage of wind (airflow).
- Other configurations are the same as those in the first embodiment.
- the virtual heat exchanger 321 is divided.
- the rotation of the fan 311 is performed.
- the deviation of the wind speed distribution with respect to the direction can be reduced around the fan 311. As a result, noise during rotation of the fan 311 can be reduced and energy efficiency can be improved.
- FIG. 26 is a perspective view showing a main part of an outdoor unit 1 according to the eighth embodiment of the present invention.
- FIG. 27 is a schematic cross-sectional view along the plane XXVII in FIG.
- a drive control device 33 is accommodated in the housing 2.
- the drive control device 33 controls the drive of devices in the housing 2 (for example, a fan motor 312, a compressor motor, a solenoid valve, etc.).
- the drive control device 33 includes an electrical component that includes a circuit board and a box that houses the electrical component.
- the drive control device 33 is disposed in a region 42 that is farther from the fan 311 than the region 41.
- the drive control device 33 is arranged in a range where the heat exchanger 321 (that is, the heat exchange unit 321b) does not exist in the rotation direction of the fan 311.
- the drive control device 33 is attached to the panel shielding part 242 of the side panel 24 in the housing 2. As a result, the drive control device 33 is covered with the panel shielding part 242.
- a heat sink 34 for cooling the circuit board and the like of the drive control device 33 is provided on the surface of the drive control device 33 on the axis A side.
- Other configurations are the same as those of the second embodiment.
- the drive control device 33 housed in the housing 2 is disposed in the region 42 farther from the fan 311 than the region 41, and is provided in the panel shielding part 242 of the side panel 24. Therefore, the drive control device 33 can be protected from the environment (for example, wind and rain) outside the housing 2 by the panel shielding unit 242. Further, since the position of the drive control device 33 is away from the fan 311, the influence of the drive control device 33 on the wind speed distribution around the fan 311 can be reduced, and the drive control device 33 is placed in the housing 2. An increase in the deviation of the wind speed distribution due to the arrangement can be suppressed.
- the drive control device 33 is disposed in the area 42 that is small in the range occupied by the heat exchanger 321, it is possible to easily secure an arrangement space for the drive control device 33 and the heat sink 34, and to the drive control device 33. Maintenance work can be facilitated.
- FIG. 28 is a perspective view showing a main part of an outdoor unit 1 according to the ninth embodiment of the present invention.
- FIG. 29 is a schematic cross-sectional view along the plane XXIX in FIG.
- the panel shield 242 of the side panel 24 is provided with an entrance 25 that allows access from outside the housing 2 to the inside of the housing 2.
- the entrance / exit 25 is located in a region 42 farther from the fan 311 than the region 41.
- the panel shielding part 242 is provided with a lid 26 for opening and closing the entrance 25.
- cover 26 is comprised with the board which blocks
- the entrance / exit 25 is provided in the panel shielding part 242 of the side panel 24, and the entrance / exit 25 is located in the region 42 farther from the fan 311 than the region 41.
- the influence of the entrance / exit 25 on the wind speed distribution can be reduced, and an increase in the bias of the wind speed distribution due to the provision of the entrance / exit 25 in the panel shielding part 242 of the side panel 24 can be suppressed.
- the entrance / exit 25 is provided in the panel shielding part 242 located in the area
- the four plane portions B1 to B4 respectively overlapping the sides of the quadrangle surrounding the entire circumference of the axis A are the virtual setting plane.
- the polygon surrounding the entire circumference of the axis A is not limited to a quadrangle, and may be, for example, a triangle or a hexagon. In this case, the number of plane portions that overlap each side of the polygon is the same as the number of each side of the polygon.
- the number of the regions 41 and 42 aligned in the direction along the axis A is two.
- the number of the regions aligned in the direction along the axis A is as follows. Three or more may be used.
- the configuration of the heat exchange unit 321a existing in the region 41 closest to the fan 311 is applied to the configuration of the heat exchange unit 321b existing in the region 42 farther from the fan 311 than the region 41. May be.
- the airflow resistance in the circumferential direction of the virtual setting surface B can be made uniform, and the wind speed distribution around the fan 311 can be improved.
- the bias can be further reduced.
- the present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the present invention. Furthermore, the present invention can also be implemented by combining the above embodiments.
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Abstract
Description
実施の形態1.
図1は、この発明の実施の形態1による空気調和機ユニットを示す斜視図である。図において、空気調和機は、室内ユニット及び室外ユニット(空気調和機ユニット)1間で冷媒を循環させることにより冷凍サイクルを構成する。室外ユニット1は、筐体2と、筐体2内に収容されているユニット内機器3とを有している。
図9は、この発明の実施の形態2による室外ユニット1を示す要部斜視図である。また、図10は図9の平面Xに沿った断面図、図11は図9の平面XIに沿った断面図である。各領域41,42のうち、ファン311に最も近い領域41に存在する熱交換部321aは、仮想設定面Bに設けられた複数(この例では、4つ)の平面部B1~B4のすべてに配置されている。即ち、熱交換部321aは、軸線Aに沿った方向へ室外ユニット1を見たとき、図10に示すように、軸線Aを囲む多角形(この例では、四角形)の各辺のすべてに配置されている。
図12は、この発明の実施の形態3による室外ユニット1を示す要部斜視図である。また、図13は、図12の平面XIIIに沿った模式的な断面図である。各領域41,42のうち、ファン311に最も近い領域41に存在する熱交換部321aは、軸線Aを内側にして互いに重ねて配列された複数の熱交換パネル322を有している。ファン311に最も近い領域41に存在する熱交換部321aを通る気流Vaの通風抵抗(圧力損失)ΔP[Pa]は、熱交換部321aでの熱交換パネル322の列数を仮想設定面Bの周方向について調整することにより、仮想設定面Bの周方向について均一化されている。この例では、熱交換部321aにおいて、熱交換パネル322の列数が、仮想設定面Bの周方向について同じになっている。即ち、熱交換部321aでは、仮想設定面Bの周方向のどの位置においても、熱交換パネル322の列数が同じ数(この例では、2列)になっている。他の構成は実施の形態1と同様である。
図14は、この発明の実施の形態4による室外ユニット1を示す要部斜視図である。また、図15は、図14の熱交換部321aにおける各フィン324を示す模式図である。各領域41,42のうち、ファン311に最も近い領域41に存在する熱交換部321aでは、冷媒が通る伝熱管(冷媒管)に設けられた複数のフィン324が仮想設定面Bの周方向について互いに間隔を置いて並べられている。各フィン324は、仮想設定面Bの周方向に垂直で軸線Aに沿って配置された板である。各フィン324間の空間寸法(フィンピッチ)Fpを仮想設定面Bの周方向について調整することにより、熱交換部321aを通る気流Vaの通風抵抗ΔP[Pa]が仮想設定面Bの周方向について均一化されている。この例では、熱交換部321aにおいて、フィンピッチFpが、仮想設定面Bの周方向のどの位置においても同じになっている。他の構成は実施の形態1と同様である。
図16は、この発明の実施の形態5による室外ユニット1を示す要部斜視図である。また、図17は、図16の平面XVIIに沿った断面図である。各領域41,42のうち、ファン311に最も近い領域41に存在する熱交換部321aは、熱交換パネル322を有している。この例では、熱交換部321aにおける熱交換パネル322の列数が1列になっている。
図21は、この発明の実施の形態6による室外ユニット1を示す要部斜視図である。また、図22は、図21の平面XXIIに沿った断面図である。各領域41,42のうち、ファン311に最も近い領域41に存在する熱交換部321aは、熱交換パネル322を有している。この例では、熱交換部321aでの熱交換パネル322の列数が1列である。熱交換部321aにおける熱交換パネル322では、各伝熱管325が軸線Aに沿った方向へ間隔を置いて並べられている。各伝熱管325の中心間距離(伝熱管ピッチ)Dpを仮想設定面Bの周方向について調整することにより、熱交換部321aを通る気流Vaの通風抵抗ΔP[Pa]が仮想設定面Bの周方向について均一化されている。この例では、熱交換部321aにおいて、各伝熱管325の中心間距離(伝熱管ピッチ)Dpが、仮想設定面Bの周方向について同じになっている。また、この例では、各伝熱管325の断面形状が円形になっている。他の構成は実施の形態5と同様である。
図24は、この発明の実施の形態7による室外ユニット1を示す要部斜視図である。また、図25は、図24の各熱交換部321a,321b,321cのそれぞれの周方向長さを説明するための室外ユニット1を示す要部斜視図である。本実施の形態では、熱交換器321に設定されている領域の数が3つになっている。即ち、熱交換器321には、軸線Aに沿った方向へ並ぶ3つの領域41~43が設定されている。各領域41~43のうち、領域41がファン311に最も近い領域、領域42がファン311に2番目に近い領域、領域43がファン311から最も離れた領域である。熱交換器321は、各領域41~43にそれぞれ存在する3つの熱交換部321a,321b,321cに分けられている。
図26は、この発明の実施の形態8による室外ユニット1を示す要部斜視図である。また、図27は、図26の平面XXVIIに沿った模式的な断面図である。筐体2内には、駆動制御機器33が収容されている。駆動制御機器33は、筐体2内の機器(例えばファンモータ312、圧縮機のモータ、電磁弁等)の駆動を制御する。駆動制御機器33は、回路基板を含む電装品と、電装品を収容するボックスとを有している。
図28は、この発明の実施の形態9による室外ユニット1を示す要部斜視図である。また、図29は、図28の平面XXIXに沿った模式的な断面図である。側面パネル24のパネル遮蔽部242には、筐体2外から筐体2内へのアクセスを可能にする出入口25が設けられている。出入口25は、領域41よりもファン311から離れた領域42に位置している。また、パネル遮蔽部242には、出入口25を開閉する蓋26が設けられている。蓋26は、風(気流)の通過を阻止する板で構成されている。他の構成は実施の形態2と同様である。
Claims (7)
- 軸線を中心に回転するファン、及び
上記ファンの軸線方向について上記ファンに対してずれた位置に配置され、上記軸線を囲む仮想設定面上に配置されている熱交換器
を備え、
上記熱交換器は、上記ファンの軸線方向へ並ぶ複数の領域にそれぞれ存在する複数の熱交換部に分けられており、
上記軸線に対して垂直な平面における上記仮想設定面に沿った方向を上記仮想設定面の周方向とすると、上記仮想設定面の周方向についての各上記熱交換部の長さは、上記ファンに近い上記領域に存在する上記熱交換部ほど長くなっている空気調和機ユニット。 - 上記仮想設定面には、上記ファンの軸線方向に沿って上記仮想設定面を見たとき、上記軸線を囲む多角形の各辺にそれぞれ重なる複数の平面部が設けられ、
上記ファンに最も近い上記領域に存在する上記熱交換部は、上記ファンの軸線方向に沿って上記熱交換器を見たとき、各上記平面部のすべてに配置されている請求項1に記載の空気調和機ユニット。 - 上記ファンに最も近い上記領域に存在する上記熱交換部では、通風抵抗が、上記仮想設定面の周方向について均一化されている請求項1又は請求項2に記載の空気調和機ユニット。
- 上記ファンに最も近い上記領域に存在する上記熱交換部は、上記ファンの軸線を内側にして重ねて配列された複数の熱交換パネルを有し、
上記ファンに最も近い上記領域に存在する上記熱交換部では、上記熱交換パネルの列数が、上記仮想設定面の周方向について同じになっている請求項3に記載の空気調和機ユニット。 - 上記ファンに最も近い上記領域に存在する上記熱交換部は、複数の伝熱管と、上記伝熱管に設けられた複数のフィンとを有し、
上記ファンに最も近い上記領域に存在する上記熱交換部では、上記フィンの形状、各上記フィン間のピッチ、上記伝熱管の外形、及び各上記伝熱管間のピッチの少なくともいずれかが、上記仮想設定面の周方向について同じになっている請求項3に記載の空気調和機ユニット。 - 上記ファンの軸線を囲む複数の側面パネルを有し、上記ファン及び上記熱交換器を収容する筐体
をさらに備え、
各上記側面パネルのうち少なくともいずれかは、気流の通過を阻止するパネル遮蔽部を有し、
上記パネル遮蔽部は、上記ファンの回転方向について上記熱交換器が存在していない範囲を覆っており、
上記筐体内の機器の駆動を制御する駆動制御機器は、上記筐体内で上記パネル遮蔽部に取り付けられ、かつ、上記ファンに最も近い上記領域よりも上記ファンから離れた上記領域に配置されている請求項1~請求項5のいずれか一項に記載の空気調和機ユニット。 - 上記ファンの軸線を囲む複数の側面パネルを有し、上記ファン及び上記熱交換器を収容する筐体
をさらに備え、
各上記側面パネルのうち少なくともいずれかは、気流の通過を阻止するパネル遮蔽部を有し、
上記パネル遮蔽部は、上記ファンの回転方向について上記熱交換器が存在していない範囲を覆っており、
上記パネル遮蔽部には、上記筐体外から上記筐体内へのアクセスを可能にする出入口が設けられ、
上記出入口は、上記ファンに最も近い上記領域よりも上記ファンから離れた上記領域に位置している請求項1~請求項6のいずれか一項に記載の空気調和機ユニット。
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