WO2023145010A1 - 空気調和機 - Google Patents

空気調和機 Download PDF

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Publication number
WO2023145010A1
WO2023145010A1 PCT/JP2022/003370 JP2022003370W WO2023145010A1 WO 2023145010 A1 WO2023145010 A1 WO 2023145010A1 JP 2022003370 W JP2022003370 W JP 2022003370W WO 2023145010 A1 WO2023145010 A1 WO 2023145010A1
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WO
WIPO (PCT)
Prior art keywords
air conditioner
baffle plates
air
outlets
angle
Prior art date
Application number
PCT/JP2022/003370
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
遼太 福田
文人 北村
昭宏 若▲松▼
Original Assignee
三菱電機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to PCT/JP2022/003370 priority Critical patent/WO2023145010A1/ja
Priority to JP2023576527A priority patent/JP7703054B2/ja
Publication of WO2023145010A1 publication Critical patent/WO2023145010A1/ja

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0011—Indoor units, e.g. fan coil units characterised by air outlets
    • F24F1/0014—Indoor units, e.g. fan coil units characterised by air outlets having two or more outlet openings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0018—Indoor units, e.g. fan coil units characterised by fans
    • F24F1/0033—Indoor units, e.g. fan coil units characterised by fans having two or more fans
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/79—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling the direction of the supplied air

Definitions

  • the present disclosure relates to an air conditioner in which two fans are arranged side by side in the width direction of the housing.
  • Patent Document 1 there are air conditioners in which two blowers are arranged side by side in the width direction of the housing (see Patent Document 1, for example).
  • the inside of the housing is divided into a heat exchange chamber containing a heat exchanger and a blowing chamber containing a blower.
  • a diffuser section extending to the vessel is provided. Then, the air sucked into the housing from the suction port formed on the blowing chamber side of the housing is blown out from the blowing part of the blower, passes through the diffuser part, passes through the heat exchanger, and then heats the housing. It is discharged to the outside of the housing from an outlet formed on the exchange chamber side.
  • the diffuser section is formed so as to diffuse the air flow in the width direction, thereby making the air velocity distribution in the width direction uniform with respect to the heat exchanger.
  • Patent Document 1 only a motor connected to them by a double shaft is provided between the two blowers, and if the distance between the two blowers is short, the air sucked from the suction port of the two blowers interfere with each other resulting in uneven loading of the two fans. Further, in Patent Document 1, a diffuser portion is provided in the blowing portion of the blower, and the diffuser portion is formed so as to diffuse the air flow in the width direction. After passing through the diffuser section, the air blown out from the blowing section of the other fan interferes with the air that has passed through the diffuser section. As a result, air blow resistance increases. In addition, when the load on the two fans becomes uneven or the blowing resistance increases, there is a problem that the operating efficiency is lowered and the aerodynamic performance is lowered.
  • the present disclosure has been made in order to solve the above problems, and an air blower that suppresses a decrease in operating efficiency caused by uneven loads on the two fans and an increase in air blow resistance.
  • the purpose is to provide a harmonizing machine.
  • An air conditioner includes a housing having an inlet and two outlets, and arranged side by side in the width direction of the housing inside the housing.
  • two blowers blowing from different one of them, a partition plate provided between the two blowers, and a baffle plate provided at each edge of the two outlets and protruding outside the housing; , wherein the two air guide plates are provided so as to be positioned between the two outlets, and the angle with respect to the opening surface of the outlets provided respectively is 90° or less.
  • the partition plate is provided between the two fans, even if the two fans are close to each other, the air sucked from the fans interferes with each other, Uneven loads can be suppressed.
  • two air guide plates are provided at the edges of each of the two air outlets, and the two air guide plates are provided so as to be positioned between the two air outlets.
  • the angle of the air outlet with respect to the opening surface is 90° or less. Therefore, it is possible to suppress the spread of the flow of air blown out from the outlet in the width direction, thereby suppressing an increase in blowing resistance. As a result, uneven loads on the two blowers and an increase in blowing resistance are suppressed, so a decrease in operating efficiency can be suppressed.
  • FIG. 1 is a front perspective view showing an air conditioner according to Embodiment 1.
  • FIG. Fig. 2 is a front perspective view of the air conditioner shown in Fig. 1 with a front plate removed; 2 is a front view showing the internal structure of the upper part of the air conditioner according to Embodiment 1.
  • FIG. 4 is a front view of the fan shown in FIG. 3 with a fan casing removed;
  • FIG. 2 is a schematic front view showing the flow of air inside the housing of the air conditioner according to Embodiment 1; 2 is an enlarged front perspective view of the upper structure of the air conditioner according to Embodiment 1.
  • FIG. FIG. 4 is a diagram for explaining sizes of partition plates of the air conditioner according to Embodiment 1; FIG.
  • FIG. 4 is a diagram illustrating the position of the lower end of the partition plate of the air conditioner according to Embodiment 1;
  • FIG. 4 is a diagram for explaining the angle of the baffle plate of the air conditioner according to Embodiment 1;
  • FIG. 4 is a diagram illustrating the size of the air guide plate of the air conditioner according to Embodiment 1;
  • FIG. 4 is a diagram showing a control flow of the baffle plate performed by the control device during operation of the air conditioner according to Embodiment 1;
  • FIG. 10 is a diagram showing a control flow of the baffle plate performed by the control device when the operation of the air conditioner according to Embodiment 2 is stopped.
  • FIG. 10 is a diagram showing a modification of the control flow of the baffle plate performed by the control device during operation of the air conditioner according to Embodiment 2;
  • FIG. 1 is a front perspective view showing an air conditioner 100 according to Embodiment 1.
  • FIG. 2 is a front perspective view of the air conditioner 100 shown in FIG. 1 with the front plate 2 removed.
  • 3 is a front view showing the internal structure of the upper portion of the air conditioner 100 according to Embodiment 1.
  • FIG. 4 is a front view of the fans 5a and 5b shown in FIG. 3 with the fan casings 50a and 50b removed.
  • the air conditioner 100 is, for example, a floor type, and supplies conditioned air to the indoor space via a duct 60 (see FIG. 5 described later).
  • An air conditioner 100 includes a housing 1 forming an outer shell, and a front plate 2 is provided on the front surface of the housing 1 .
  • the front plate 2 of the housing 1 is formed with an intake port 20 for taking air into the housing 1 .
  • the upper surface 4 of the housing 1 is formed with outlets 40 a and 40 b for blowing out air to the outside of the housing 1 .
  • An air passage is formed inside the housing 1 from the inlet 20 to the outlets 40a and 40b.
  • baffle plates 11a and 11b protruding outward from the housing 1, that is, upward are provided on one side (hereinafter referred to as edge) of the periphery of the outlets 40a and 40b formed on the upper surface 4 of the housing 1, baffle plates 11a and 11b protruding outward from the housing 1, that is, upward, are provided.
  • the baffle plates 11a and 11b are provided on the edge of the air outlet 40a on the air outlet 40b side and the edge of the air outlet 40b on the air outlet 40a side, respectively. That is, the two baffle plates 11a and 11b are provided so as to be located between the two outlets 40a and 40b. The details of the baffle plates 11a and 11b will be described later.
  • the heat exchanger 6 is arranged on the back side of the intake port 20 when viewed from the side of the housing 1 where the front plate 2 is arranged. Also, the heat exchanger 6 is arranged at an angle inside the housing 1 .
  • the two fans 5a and 5b are arranged inside the housing 1 above the heat exchanger 6 and below the outlets 40a and 40b.
  • the two fans 5a and 5b are arranged side by side in the left-right direction (width direction).
  • the two blowers 5a and 5b include fans 51a and 51b and fan casings 50a and 50b that cover the peripheries of the fans 51a and 51b and are fixed to the upper surface 4 of the housing 1. I have.
  • the fans 51a and 51b are composed of sirocco fans.
  • Motors 9a and 9b are connected to the fans 51a and 51b of the two blowers 5a and 5b, respectively.
  • the fans 51a and 51b are driven by inverter-controlling the motors 9a and 9b.
  • the motors 9a and 9b are connected to the fans 51a and 51b of the two blowers 5a and 5b, respectively.
  • 51b may be connected to the same motor.
  • the drain pan 7 is arranged inside the housing 1 so as to collect moisture flowing down below the heat exchanger 6 which is inclined.
  • the control device 30 is, for example, dedicated hardware, or a CPU (Central Processing Unit) that executes a program stored in a storage unit (not shown). ).
  • a CPU Central Processing Unit
  • control device 30 may be, for example, a single circuit, a composite circuit, an ASIC (Application Specific Integrated Circuit), an FPGA (Field-Programmable Gate Array), or a combination thereof. Applicable. Each functional unit implemented by the control device 30 may be implemented by separate hardware, or each functional unit may be implemented by one piece of hardware.
  • ASIC Application Specific Integrated Circuit
  • FPGA Field-Programmable Gate Array
  • each function executed by the control device 30 is implemented by software, firmware, or a combination of software and firmware.
  • Software and firmware are written as programs and stored in the storage unit.
  • the CPU implements each function of the control device 30 by reading and executing the programs stored in the storage unit.
  • the storage unit stores various kinds of information, and includes, for example, a rewritable non-volatile semiconductor memory such as flash memory, EPROM, and EEPROM.
  • control device 30 may be realized by dedicated hardware, and part of them may be realized by software or firmware.
  • the control device 30 controls the fans 5a and 5b based on detection signals from various sensors (not shown) provided in the air conditioner 100 and operation signals from an operation unit (not shown). and controls the operation of the air conditioner 100 as a whole.
  • FIG. 5 is a schematic front view showing the flow of air inside the housing 1 of the air conditioner 100 according to Embodiment 1.
  • the air that has flowed into the housing 1 from the suction port 20 passes through the heat exchanger 6 and is conditioned, then flows upward and branches into the fan casings 50a of the blowers 5a and 5b. , 50b.
  • the conditioned air sucked into the fan casings 50a, 50b of the blowers 5a, 5b is blown out from the outlets 40a, 40b formed in the upper surface 4 of the housing 1, respectively, and supplied to the indoor space via the duct 60.
  • FIG. 6 is an enlarged front perspective view of the upper structure of the air conditioner 100 according to Embodiment 1.
  • FIG. FIG. 7 is a diagram illustrating the size of partition plate 10 of air conditioner 100 according to Embodiment 1.
  • FIG. 8 is a diagram illustrating the position of the lower end of partition plate 10 of air conditioner 100 according to Embodiment 1.
  • FIG. 6 to 8 show the air conditioner 100 with the front plate 2 removed. Also, in FIGS. 7 and 8, some parts are omitted for the sake of clarity of explanation.
  • a rectangular partition plate 10 is provided between the two fans 5a and 5b installed in the horizontal direction.
  • the partition plate 10 By providing the partition plate 10 between the two fans 5a and 5b in this way, even if the two fans 5a and 5b are close to each other, the air flow from the suction port 20 below the fans 5a and 5b to the fans 5a and 5b can be maintained. It is suppressed that the blowers 5a and 5b compete for the flowing air (see B section in FIG. 5). Therefore, it is possible to prevent the air sucked from the suction ports 52a and 52b of the fans 5a and 5b from interfering with each other and causing the loads on the two fans 5a and 5b to become uneven.
  • the width H1 of the partition plate 10 in the height direction is larger than the diameter H2 of the suction ports 52a and 52b of the fans 5a and 5b indicated by broken lines.
  • the width W1 of the partition plate 10 in the depth direction is larger than the width W2 of the suction ports 52a and 52b of the fans 5a and 5b in the depth direction indicated by broken lines.
  • the partition plate 10 is provided so that the end on the suction port 20 side is located closer to the suction port 20 than the ends on the suction port 20 side of the suction ports 52a and 52b of the fans 5a and 5b. . That is, as shown in FIG. 8, the partition plate 10 is provided so that the lower end L1 thereof is positioned below the lower ends L2 of the suction ports 52a, 52b of the fans 5a, 5b.
  • the partition plate 10 by providing the partition plate 10 so that the lower end L1 of the partition plate 10 is positioned closer to the suction port 20 side of the housing 1 than the lower end L2 of the suction ports 52a and 52b of the fans 5a and 5b, , 5b from the suction port 20 to the fans 5a and 5b.
  • FIG. 9 is a diagram for explaining the angle of the baffle plate 11 of the air conditioner 100 according to Embodiment 1.
  • FIG. FIG. 10 is a diagram illustrating the size of the baffle plate 11 of the air conditioner 100 according to Embodiment 1.
  • FIG. 9 and 10 show the air conditioner 100 with the front plate 2 removed.
  • FIG. 9 omits some parts for the sake of clarity of explanation.
  • different angles are shown for the baffle plate 11a and the baffle plate 11b, but this is for explanation.
  • the baffle plate 11a and the baffle plate 11b may have the same angle or may have different angles.
  • the baffle plates 11a and 11b are provided so that the angle ⁇ with respect to the opening plane of the outlets 40a and 40b on which the upper surface 4 of the housing 1 is provided is 90° or less. .
  • the upper surfaces 11a1 and 11b1 (see FIG. 6) of the air guide plates 11a and 11b are provided so that the angle .theta. with respect to the opening surfaces of the outlets 40a and 40b is 90.degree. or less.
  • the upper surfaces 11a1 and 11b1 of the baffle plates 11a and 11b have a rectangular shape, but the shape is not limited thereto.
  • the baffle plates 11a and 11b are provided with arbitrary lengths that fit within the projected plane X above the outlets 40a and 40b when viewed from the front.
  • the width of the projection plane X in the horizontal direction is the same as the width of the outlets 40a and 40b in the horizontal direction. That is, the baffle plates 11a and 11b are provided so as to fit within the lateral width of the outlets 40a and 40b in which they are provided.
  • the baffle plates 11a and 11b By providing the baffle plates 11a and 11b in this manner, the flow of air blown out from the outlets 40a and 40b (see part A in FIG. 5) is suppressed from being diffused in the width direction, and the blowing resistance is increased. can be prevented from becoming If the baffle plates 11a and 11b are provided in at least part of the lateral width of the outlets 40a and 40b, the effect of suppressing the diffusion of the blown air can be obtained. Therefore, even if the baffle plates 11a and 11b are provided so as not to fit within the lateral width of the outlets 40a and 40b in which they are provided, the flow of air blown out from the outlets 40a and 40b does not extend in the width direction. The effect of suppressing diffusion does not change much. Therefore, by providing the baffle plates 11a and 11b so as to fit within the lateral width of the outlets 40a and 40b, the baffle plates 11a and 11b do not have to be unnecessarily long.
  • the airflow resistance caused by the baffle plates 11a and 11b blocking the air blown from the outlets 40a and 40b increases. is preferably 30° or more.
  • the width W3 of the baffle plates 11 a and 11 b in the depth direction is smaller than the width W4 of the connecting portion of the duct 60 provided on the upper surface 4 of the housing 1 in the depth direction.
  • the longitudinal lengths of the baffle plates 11 a and 11 b are smaller than the connecting portion of the duct 60 . This is to allow the duct 60 to be connected to the upper surface 4 of the housing 1 so as to cover the outlets 40a and 40b.
  • the width W3 of the baffle plates 11a and 11b in the depth direction is made larger than the width W5 of the outlets 40a and 40b in the depth direction. That is, the baffle plates 11a and 11b are made longer than the edges of the outlets 40a and 40b in the longitudinal direction. By doing so, it is possible to further suppress the spread of the flow of air blown out from the outlets 40a and 40b in the width direction, thereby enhancing the effect of suppressing an increase in the blowing resistance.
  • the air conditioner 100 includes the housing 1 having the intake port 20 and the two outlets 40a and 40b, and is arranged side by side in the width direction inside the housing 1.
  • Two blowers 5a and 5b for blowing out the sucked air from a different one of the two blowers 40a and 40b, a partition plate 10 provided between the two blowers 5a and 5b, and the two blowers 40a and 40b. provided at each edge of the housing 1 and projecting to the outside of the housing 1, the two air guide plates 11a and 11b being positioned between the two outlets 40a and 40b. and the angle ⁇ with respect to the opening surface of the outlets 40a and 40b is 90° or less.
  • the partition plate 10 is provided between the two fans 5a and 5b. Therefore, even if the two fans 5a and 5b are close to each other, it is possible to prevent the air sucked from the fans 5a and 5b from interfering with each other and causing the loads on the two fans 5a and 5b to become uneven.
  • Two air guide plates 11a and 11b are provided at the edges of the two air outlets 40a and 40b, respectively, and the two air guide plates 11a and 11b are positioned between the two air outlets 40a and 40b. and the angle ⁇ with respect to the opening surface of the outlets 40a and 40b is 90° or less.
  • the two baffle plates 11a and 11b are provided so as to fit within the width in the width direction of the outlets 40a and 40b in which they are provided.
  • the baffle plates 11a and 11b need not be unnecessarily long.
  • the area of the partition plate 10 is larger than the opening areas of the suction ports 52a and 52b of the two fans 5a and 5b.
  • the air conditioner 100 According to the air conditioner 100 according to Embodiment 1, it is further suppressed that the fans 5a and 5b compete for the air that has flowed from the suction port 20 to the fans 5a and 5b. Therefore, it is possible to enhance the effect of preventing the air sucked from the suction ports 52a and 52b of the fans 5a and 5b from interfering with each other and causing the loads on the two fans 5a and 5b to become uneven. As a result, it is possible to enhance the effect of suppressing the deterioration of the operating efficiency, and it is possible to enhance the effect of suppressing the deterioration of the aerodynamic performance caused by the deterioration of the operating efficiency.
  • the end of the partition plate 10 on the suction port 20 side draws more air than the ends on the suction port 20 side of the suction ports 52a and 52b of the two fans 5a and 5b. It is located on the mouth 20 side.
  • the air conditioner 100 it is further suppressed that the fans 5a and 5b compete for the air that has flowed from the suction port 20 to the fans 5a and 5b. Therefore, it is possible to further enhance the effect of preventing the air sucked from the suction ports 52a and 52b of the fans 5a and 5b from interfering with each other and causing the loads on the two fans 5a and 5b to become uneven. As a result, it is possible to further enhance the effect of suppressing a decrease in operating efficiency, and to further enhance the effect of suppressing a decrease in aerodynamic performance caused by a decrease in operating efficiency.
  • the two baffle plates 11a and 11b have a rectangular shape, and the longitudinal direction is provided along the respective edges of the two outlets 40a and 40b. and is longer than the edge length of each of the two outlets 40a, 40b in the longitudinal direction.
  • the flow of air blown out from the outlets 40a and 40b is further suppressed from being diffused in the width direction, thereby suppressing an increase in blowing resistance. You can increase the effect.
  • Embodiment 2 will be described below, but descriptions of parts that overlap with those of Embodiment 1 will be omitted, and parts that are the same as or correspond to those of Embodiment 1 will be given the same reference numerals.
  • the angle ⁇ of the baffle plates 11a and 11b is set to 90° or less, and the angle ⁇ remains unchanged.
  • the angle ⁇ of the baffle plates 11a and 11b is variably set to 90° or less. Therefore, in the second embodiment, a baffle plate motor (not shown) is provided separately from the motors 9a and 9b, which are coupled to the two baffle plates 11a and 11b to rotate them.
  • the two baffle plates 11a and 11b are connected to the baffle plate motors, respectively.
  • a configuration in which the wind plate motor is connected may be employed.
  • the motors 9a and 9b are connected to the fans 51a and 51b of the two blowers 5a and 5b, respectively.
  • the control device 30 detects the loads of the motors 9a and 9b that drive the fans 51a and 51b of the blowers 5a and 5b, respectively.
  • a method of detecting the load of the motors 9a and 9b for example, there is a method of detecting the current value input to the motors 9a and 9b using a current sensor. Other methods such as detecting the power consumption of 9b may be used.
  • Th1 the difference between the load on the motor 9a and the load on the motor 9b exceeds a preset first threshold value Th1
  • the control device 30 sets the angle ⁇ of the baffle plates 11a and 11b to a preset threshold value Th1.
  • the baffle plates 11a and 11b are rotated so as to decrease by one angle ⁇ 1.
  • ⁇ L is an absolute value.
  • the control device 30 sets the angle ⁇ of the baffle plates 11a and 11b to The baffle plates 11a and 11b are rotated so as to increase by the set second angle ⁇ 2.
  • the first angle ⁇ 1 and the second angle ⁇ 2 may have the same value or may have different values. In this way, the loads of the two motors 9a and 9b are detected, and the angle ⁇ of the baffle plates 11a and 11b is controlled according to the difference ⁇ L between the load of the motors 9a and 9b.
  • Embodiment 2 has a regulation structure in which the angle ⁇ of the baffle plates 11a and 11b does not exceed 90°.
  • the regulating structure is, for example, a stopper provided at a position where the baffle plates 11a and 11b collide with each other when the angle ⁇ is 90°.
  • FIG. 11 is a diagram showing a flow of control of the baffle plates 11a and 11b performed by the control device 30 during operation of the air conditioner 100 according to Embodiment 1. As shown in FIG. A control flow of the baffle plates 11a and 11b during operation of the air conditioner 100 will be described below with reference to FIG. When the operation of the air conditioner 100 is started, or when the air volume setting is changed, the process proceeds to step S101.
  • Step S101 The control device 30 detects the loads on the two motors 9a and 9b and determines whether the difference ⁇ L between the load on the motor 9a and the load on the motor 9b is greater than a preset first threshold Th1.
  • a preset first threshold Th1 a preset first threshold value
  • the process proceeds to step S102.
  • the controller 30 determines that the difference ⁇ L between the load on the motor 9a and the load on the motor 9b is not greater than the first threshold Th1 (NO)
  • the process repeats step S101.
  • Step S102 The control device 30 rotates the baffle plates 11a and 11b so that the angle ⁇ of the baffle plates 11a and 11b is reduced by a preset first angle ⁇ 1.
  • Step S103 The control device 30 detects the loads on the two motors 9a and 9b and determines whether the difference ⁇ L between the load on the motor 9a and the load on the motor 9b is smaller than a preset second threshold Th2.
  • the controller 30 determines that the difference ⁇ L between the load on the motor 9a and the load on the motor 9b is smaller than the second threshold Th2 (YES)
  • the process proceeds to step S104.
  • the controller 30 determines that the difference ⁇ L between the load on the motor 9a and the load on the motor 9b is not smaller than the second threshold Th2 (NO)
  • the process returns to step S102.
  • Step S104 The control device 30 maintains the angle ⁇ of the baffle plates 11a and 11b. In other words, nothing is processed.
  • Step S105 The control device 30 detects the loads on the two motors 9a and 9b and determines whether the difference ⁇ L between the load on the motor 9a and the load on the motor 9b is greater than a first threshold Th1.
  • a first threshold Th1 YES
  • the process returns to step S102.
  • the controller 30 determines that the difference ⁇ L between the load on the motor 9a and the load on the motor 9b is not greater than the first threshold Th1 (NO)
  • the process proceeds to step S106.
  • step S105 is a process that assumes a case where the difference ⁇ L between the load on the motor 9a and the load on the motor 9b fluctuates due to an external factor. With this process, even if the difference ⁇ L between the load of the motor 9a and the load of the motor 9b becomes larger than the first threshold Th1 due to an external factor, the process can be returned to step S102, and the load of the motor 9a and the load of the motor 9b can be returned to step S102.
  • a process (steps S102 and S103) can be performed to reduce the difference ⁇ L from the load of the .
  • Step S106 The control device 30 detects the loads of the two motors 9a and 9b, and the state in which the difference ⁇ L between the load of the motor 9a and the load of the motor 9b is smaller than the second threshold Th2 has passed for a predetermined time T1 or longer. determine whether When the controller 30 determines that the state in which the difference ⁇ L between the load of the motor 9a and the load of the motor 9b is smaller than the second threshold Th2 has passed for the predetermined time T1 or more (YES), the process proceeds to step S107.
  • step S104 when the control device 30 determines that the state in which the difference ⁇ L between the load of the motor 9a and the load of the motor 9b is smaller than the second threshold Th2 has not passed the predetermined time T1 or longer (NO), the process proceeds to step S104. back to
  • Step S107 The control device 30 rotates the baffle plates 11a and 11b so that the angle ⁇ of the baffle plates 11a and 11b is increased by a preset second angle ⁇ 2.
  • Step S108 The control device 30 detects the loads on the two motors 9a and 9b and determines whether the difference ⁇ L between the load on the motor 9a and the load on the motor 9b is greater than a second threshold Th2.
  • a second threshold Th2 the difference ⁇ L between the load on the motor 9a and the load on the motor 9b is greater than the second threshold Th2 (YES)
  • the process returns to step S101.
  • the controller 30 determines that the difference ⁇ L between the load on the motor 9a and the load on the motor 9b is not greater than the second threshold Th2 (NO)
  • the process returns to step S107.
  • FIG. 12 is a diagram showing a control flow of the baffle plates 11a and 11b performed by the control device 30 when the operation of the air conditioner 100 according to Embodiment 1 is stopped.
  • a control flow of the baffle plates 11a and 11b when the operation of the air conditioner 100 is stopped will be described below with reference to FIG. After the operation of the air conditioner 100 is stopped, the process proceeds to step S201.
  • Step S201 The control device 30 rotates the baffle plates 11a and 11b so that the angle ⁇ of the baffle plates 11a and 11b is 90°.
  • the baffle plates 11a and 11b can always be in the same position.
  • FIG. 13 is a diagram showing a modification of the control flow for the baffle plates 11a and 11b performed by the control device 30 when the air conditioner 100 according to Embodiment 1 is in operation.
  • the control flow of the air guide plates 11a and 11b during operation of the air conditioner 100 may be simpler than the control flow shown in FIG. 11, as shown in FIG. That is, when the control device 30 determines that the difference ⁇ L between the load of the motor 9a and the load of the motor 9b is larger than the first threshold Th1, the angle ⁇ of the baffle plates 11a and 11b is decreased until it becomes smaller than the second threshold Th2. It is also possible to perform only the process of
  • the air conditioner 100 includes the motors 9a and 9b that drive the two fans 5a and 5b, respectively, and the two wind guide plates 11a according to the load difference ⁇ L between the two motors 9a and 9b. , 11b.
  • the two baffle plates 11a and 11b are rotated according to the difference in load ⁇ L between the two motors 9a and 9b. Therefore, it is possible to suppress uneven loads on the two fans 5a and 5b, and to suppress a decrease in operating efficiency due to current imbalance between the two fans 5a and 5b. A decrease in aerodynamic performance caused by a decrease in efficiency can be suppressed.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air-Flow Control Members (AREA)
PCT/JP2022/003370 2022-01-28 2022-01-28 空気調和機 WO2023145010A1 (ja)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5916909U (ja) * 1982-07-21 1984-02-01 株式会社東芝 空気調和機の送風装置
JPS6149960A (ja) * 1984-08-16 1986-03-12 Matsushita Seiko Co Ltd 天井埋込形空気調和機の吹出装置
JPH1038305A (ja) * 1996-07-23 1998-02-13 Mitsubishi Heavy Ind Ltd 天井埋込形空気調和機
WO2016121071A1 (ja) * 2015-01-29 2016-08-04 三菱電機株式会社 空気調和機

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5916909U (ja) * 1982-07-21 1984-02-01 株式会社東芝 空気調和機の送風装置
JPS6149960A (ja) * 1984-08-16 1986-03-12 Matsushita Seiko Co Ltd 天井埋込形空気調和機の吹出装置
JPH1038305A (ja) * 1996-07-23 1998-02-13 Mitsubishi Heavy Ind Ltd 天井埋込形空気調和機
WO2016121071A1 (ja) * 2015-01-29 2016-08-04 三菱電機株式会社 空気調和機

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