Air conditioner

Abstract

This air conditioner comprises: a casing having an intake opening and two blowout openings; two blowers disposed inside the casing so as to be lined up in the width direction thereof, the blowers blowing air taken in through the intake opening to a mutually different one of the two blowout openings; a partition plate provided between the two blowers; and baffle plates provided to the edges of each of the two blowout openings, the baffle plates protruding toward the outside of the casing. The two baffle plates are provided so as to be positioned between the two blowout openings and such that the angles formed by each of the baffle plates with respect to opening surfaces of the provided blowout openings are 90° or less.

Description

Technical Field

[0001] The present disclosure relates to an air conditioner in which two blowers are arranged side by side in the width direction of a housing.

Background Art

[0002] Conventionally, there has been an air conditioner in which two blowers are arranged side by side in the width direction of a housing (see, for example, Patent Document 1). In the air conditioner of Patent Document 1, the interior of the housing is partitioned into a heat exchange chamber in which a heat exchanger is housed and a blower chamber in which a blower is housed. A diffuser portion extending to the heat exchanger is provided at the blowing portion of the blower. Then, the air sucked into the housing from the suction port formed on the blower chamber side of the housing is blown out from the blowing portion of the blower, passes through the heat exchanger through the diffuser portion, and is then discharged out of the housing from the blowout port formed on the heat exchange chamber side of the housing.

[0003] Further, the diffuser portion is formed so as to diffuse the air flow in the width direction, thereby making the wind speed distribution in the width direction uniform with respect to the heat exchanger.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, in Patent Document 1, only a motor connected by a two-shaft shaft is provided between the two blowers. When the distance between the two blowers is short, the air sucked from the inlets of the two blowers interferes with each other, resulting in uneven loads on the two blowers. Further, in Patent Document 1, a diffuser section is provided at the blowing section of the blower, and the diffuser section is formed to diffuse the air flow in the width direction. Therefore, the air blown out from the blowing section of one blower interferes with the air that has passed through the diffuser section and is blown out from the blowing section of the other blower after passing through the diffuser section. Due to the interference of the air blown out from the blowing sections of the two blowers with each other, the blowing resistance increases. When the loads on the two blowers become uneven or the blowing resistance increases, there is a problem that the operating efficiency decreases and the aerodynamic performance deteriorates.

[0006] The present disclosure has been made to solve the above problems, and an object thereof is to provide an air conditioner that suppresses a decrease in operating efficiency caused by uneven loads on two blowers and an increase in blowing resistance.

Means for Solving the Problems

[0007] The air conditioner according to the present disclosure includes a housing having an inlet and two outlets, two blowers arranged side by side in the width direction inside the housing, which blow out the air sucked from the inlet from different ones of the two outlets, a partition plate provided between the two blowers, and air guide plates provided at the respective edges of the two outlets and protruding outside the housing. The two air guide plates are provided so as to be located between the two outlets, and each is provided such that the angle with respect to the opening surface of the outlet where it is provided is 90° or less. and is provided so as to be within the width in the width direction of the respective provided air outlets is provided.

Effects of the Invention

[0008] According to the air conditioner according to the present disclosure, since a partition plate is provided between the two blowers, even if the distance between the two blowers is close, it is possible to suppress the air sucked from the blowers from interfering with each other and the loads of the two blowers from becoming uneven. Further, two air guide plates are provided at the respective edges of the two air outlets, the two air guide plates are provided so as to be positioned between the two air outlets, and each is provided so that the angle with respect to the opening surface of the provided air outlet is 90° or less. Therefore, it is possible to suppress the flow of the air blown out from the air outlet from being diffused in the width direction and to suppress an increase in the blowing resistance. As a result, since it is possible to suppress the loads of the two blowers from becoming uneven and the blowing resistance from increasing, it is possible to suppress a decrease in the operation efficiency.

Brief Description of the Drawings

[0009]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

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Figure 9

Figure 10

Figure 11

Figure 12

Figure 13

Mode for Carrying Out the Invention

[0010] Hereinafter, the air conditioner 100 according to the embodiment will be described with reference to the drawings. Note that the present disclosure is not limited by the embodiment described below. Also, in the following drawings, the relationship in size of each component may be different from the actual one. Further, in the following description, terms indicating directions (for example, "up", "down", "right", "left", "front", "rear", etc.) are used as appropriate for ease of understanding, but this is for the purpose of explanation, and these terms do not limit the present disclosure. These terms indicating directions mean the directions when the air conditioner 100 is viewed from the front, unless otherwise specified. Also, in each figure, those with the same reference numerals are the same or corresponding ones, which is common throughout the specification.

[0011] Embodiment 1. FIG. 1 is a front perspective view showing the air conditioner 100 according to Embodiment 1. FIG. 2 is a front perspective view of the state where the front plate 2 is removed from the air conditioner 100 shown in FIG. 1. FIG. 3 is a front view showing the internal structure of the upper part of the air conditioner 100 according to Embodiment 1. FIG. 4 is a front view of the state where the fan casings 50a and 50b are removed from the blowers 5a and 5b shown in FIG. 3.

[0012] As shown in FIGS. 1 and 2, the air conditioner 100 according to Embodiment 1 is, for example, a floor-standing type, and supplies conditioned air to the indoor space via a duct 60 (see FIG. 5 described later). The air conditioner 100 includes a housing 1 that constitutes an outer shell, and a front plate 2 is provided on the front surface of the housing 1. Inside the housing 1, two blowers 5a, 5b, a heat exchanger 6, a drain pan 7 that collects condensed water from the heat exchanger 6, and a control box 8 that houses a control device 30 are provided. An air inlet 20 for taking air into the housing 1 is formed in the front plate 2 of the housing 1. Further, on the upper surface 4 of the housing 1, air outlets 40a, 40b for blowing air to the outside of the housing 1 are formed. And an air passage leading from the air inlet 20 to the air outlets 40a, 40b is formed inside the housing 1. Further, on one side (hereinafter referred to as the edge) of the peripheral portions of the air outlets 40a, 40b formed on the upper surface 4 of the housing 1, air guide plates 11a, 11b protruding outward, that is, upward from the housing 1 are provided. The air guide plates 11a, 11b are provided on the edge on the air outlet 40b side of the air outlet 40a and the edge on the air outlet 40a side of the air outlet 40b, respectively. That is, the two air guide plates 11a, 11b are provided so as to be positioned between the two air outlets 40a, 40b. Details of the air guide plates 11a, 11b will be described later.

[0013] The heat exchanger 6 is disposed on the back side of the air inlet 20 when viewed from the side where the front plate 2 of the housing 1 is disposed. Further, the heat exchanger 6 is disposed obliquely inside the housing 1.

[0014] The two blowers 5a and 5b are arranged inside the housing 1 above the heat exchanger 6 and below the air outlets 40a and 40b. Also, the two blowers 5a and 5b are arranged side by side in the left - right direction (width direction). As shown in FIGS. 3 and 4, 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. Here, the fans 51a and 51b are configured by sirocco fans. Also, motors 9a and 9b are respectively connected to the fans 51a and 51b of the two blowers 5a and 5b. Then, by performing inverter control on the motors 9a and 9b, the fans 51a and 51b are driven. In the first embodiment, the motors 9a and 9b are respectively connected to the fans 51a and 51b of the two blowers 5a and 5b, but it is not limited thereto, and the same motor may be connected to the fans 51a and 51b of the two blowers 5a and 5b.

[0015] As shown in FIG. 2, the drain pan 7 is arranged below the heat exchanger 6 that is inclined and arranged inside the housing 1 so as to collect the moisture flowing down.

[0016] The control device 30 is composed of, for example, dedicated hardware or a CPU (Central Processing Unit, also referred to as a central processing unit, processing unit, arithmetic unit, microprocessor, or processor) that executes a program stored in a storage unit (not shown).

[0017] When the control device 30 is dedicated hardware, the control device 30 corresponds to, for example, a single circuit, a composite circuit, an ASIC (Application Specific Integrated Circuit), an FPGA (Field - Programmable Gate Array), or a combination thereof. Each functional unit realized by the control device 30 may be realized by individual hardware, or each functional unit may be realized by one piece of hardware.

[0018] When the control device 30 is a CPU, each function executed by the control device 30 is realized by software, firmware, or a combination of software and firmware. The software and firmware are described as programs and stored in the storage unit. The CPU realizes each function of the control device 30 by reading and executing the programs stored in the storage unit. Here, the storage unit stores various information and includes, for example, a rewritable non-volatile semiconductor memory such as a flash memory, an EPROM, and an EEPROM.

[0019] Note that part of the functions of the control device 30 may be realized by dedicated hardware and part by software or firmware.

[0020] The control device 30 controls the blowers 5a, 5b, etc. 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 entire air conditioner 100.

[0021] FIG. 5 is a front schematic view showing the air flow inside the housing 1 of the air conditioner 100 according to Embodiment 1. The arrows in FIG. 5 indicate the air flow.

[0022] As shown in FIG. 5, the air that has flowed into the inside of the housing 1 from the suction port 20 passes through the heat exchanger 6 and is conditioned, then branches while flowing upward and is sucked into the inside of the fan casings 50a, 50b of the blowers 5a, 5b. The conditioned air sucked into the fan casings 50a, 50b of the blowers 5a, 5b is blown out from the blowout ports 40a, 40b formed in the upper surface 4 of the housing 1, respectively, and supplied to the indoor space via the duct 60.

[0023] FIG. 6 is an enlarged front perspective view of the upper structure of the air conditioner 100 according to Embodiment 1. FIG. 7 is a diagram for explaining the size of the partition plate 10 of the air conditioner 100 according to Embodiment 1. FIG. 8 is a diagram for explaining the position of the lower end portion of the partition plate 10 of the air conditioner 100 according to Embodiment 1. Note that FIGS. 6 to 8 show a state in which the front plate 2 is removed from the air conditioner 100. Also, in FIGS. 7 and 8, some components are omitted from the illustration for easier understanding of the explanation.

[0024] As shown in FIG. 6, a rectangular partition plate 10 is provided between two blowers 5a and 5b installed in the left - right direction. By providing the partition plate 10 between the two blowers 5a and 5b in this way, even if the distance between the two blowers 5a and 5b is short, it is possible to suppress the two blowers 5a and 5b from competing for the air flowing from the suction ports 20 below the blowers 5a and 5b (see part B in FIG. 5). Therefore, it is possible to suppress the air sucked from the suction ports 52a and 52b of the blowers 5a and 5b from interfering with each other and making the loads of the two blowers 5a and 5b uneven. As a result, it is possible to suppress a decrease in operating efficiency due to, for example, an imbalance in current values occurring between the two blowers 5a and 5b, and it is possible to suppress a decrease in aerodynamic performance caused by the decrease in operating efficiency.

[0025] Also, as shown in FIG. 7, the height direction (vertical direction) width H1 of the partition plate 10 is larger than the diameter H2 of the suction ports 52a and 52b indicated by the broken lines of the blowers 5a and 5b. Further, the depth direction (front-rear direction) width W1 of the partition plate 10 is larger than the depth direction width W2 of the suction ports 52a and 52b indicated by the broken lines of the blowers 5a and 5b. By providing the area of the partition plate 10 to be larger than the opening areas of the suction ports 52a and 52b of the blowers 5a and 5b in this way, it is further suppressed that the air flowing from the suction port 20 below the blowers 5a and 5b is taken away by the blowers 5a and 5b from each other. Therefore, it is possible to enhance the effect of suppressing the interference between the air sucked from the suction ports 52a and 52b of the blowers 5a and 5b and the uneven load of the two blowers 5a and 5b. As a result, it is possible to enhance the effect of suppressing the decrease in operating efficiency, and it is possible to enhance the effect of suppressing the decrease in aerodynamic performance caused by the decrease in operating efficiency.

[0026] Furthermore, the partition plate 10 is provided such that the end portion on the suction port 20 side is located closer to the suction port 20 side than the end portions on the suction port 20 side of the suction ports 52a and 52b of the blowers 5a and 5b. That is, as shown in FIG. 8, the partition plate 10 is provided such that its lower end L1 is located below the lower end L2 of the suction ports 52a and 52b of the blowers 5a and 5b. By providing the partition plate 10 in such a manner that the lower end L1 of the partition plate 10 is located 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 blowers 5a and 5b, it is further suppressed that the air flowing from the suction port 20 below the blowers 5a and 5b is taken away by the blowers 5a and 5b from each other. Therefore, it is possible to further enhance the effect of suppressing the interference between the air sucked from the suction ports 52a and 52b of the blowers 5a and 5b and the uneven load of the two blowers 5a and 5b. As a result, it is possible to further enhance the effect of suppressing the decrease in operating efficiency, and it is possible to further enhance the effect of suppressing the decrease in aerodynamic performance caused by the decrease in operating efficiency.

[0027] FIG. 9 is a diagram for explaining the angle of the air deflector 11 of the air conditioner 100 according to Embodiment 1. FIG. 10 is a diagram for explaining the size of the air deflector 11 of the air conditioner 100 according to Embodiment 1. Note that FIGS. 9 and 10 show a state in which the front plate 2 is removed from the air conditioner 100. Further, in FIG. 9, some components are omitted from the illustration for easier understanding. Also, in FIG. 9, different angles are shown between the air deflector 11a and the air deflector 11b, but this is for the purpose of explanation. The air deflector 11a and the air deflector 11b may have the same angle or different angles.

[0028] As shown in FIG. 9, the air deflectors 11a and 11b are provided such that the angle θ with respect to the opening surfaces of the air outlets 40a and 40b provided on the upper surface 4 of the housing 1 is 90° or less. Specifically, the upper surfaces 11a1 and 11b1 (see FIG. 6) of the air deflectors 11a and 11b are provided such that the angle θ with respect to the opening surfaces of the air outlets 40a and 40b is 90° or less. As shown in FIG. 6, the upper surfaces 11a1 and 11b1 of the air deflectors 11a and 11b have a rectangular shape, but are not limited thereto. Further, the air deflectors 11a and 11b are provided with an arbitrary length that fits within the projection plane X above the air outlets 40a and 40b when viewed from the front. Here, the width of the projection plane X in the left-right direction is the same as the width of the air outlets 40a and 40b in the left-right direction. That is, the air deflectors 11a and 11b are provided so as to fit within the width of the air outlets 40a and 40b in the left-right direction where they are respectively provided.

[0029] By providing the air guide plates 11a and 11b in this way, it is possible to suppress the diffusion of the air flow blown out from the air outlets 40a and 40b (see part A in FIG. 5) in the width direction, and to suppress an increase in the blowing resistance. Note that if the air guide plates 11a and 11b are provided at least in part within the width in the left-right direction of the air outlets 40a and 40b, an effect of suppressing the diffusion of the blown air can be obtained. Therefore, even if the air guide plates 11a and 11b are provided so as not to be within the width in the left-right direction of the air outlets 40a and 40b where they are respectively provided, the effect of suppressing the diffusion of the air flow blown out from the air outlets 40a and 40b in the width direction does not change much. Therefore, by providing the air guide plates 11a and 11b so as to be within the width in the left-right direction of the air outlets 40a and 40b where they are respectively provided, it is not necessary to provide the air guide plates 11a and 11b unnecessarily long.

[0030] Note that when the angle θ of the air guide plates 11a and 11b becomes small, the blowing resistance generated by the air guide plates 11a and 11b blocking the air blown out from the air outlets 40a and 40b increases. Therefore, the angle θ of the air guide plates 11a and 11b is preferably 30° or more. As shown in FIG. 10, the width W3 in the depth direction of the air guide plates 11a and 11b is smaller than the width W4 in the depth direction of the connection portion of the duct 60 provided on the upper surface 4 of the housing 1. That is, the length in the longitudinal direction of the air guide plates 11a and 11b is smaller than that of the connection portion of the duct 60. This is to enable the duct 60 to be connected to the upper surface 4 of the housing 1 so as to cover the air outlets 40a and 40b. Further, the width W3 in the depth direction of the air guide plates 11a and 11b is made larger than the width W5 in the depth direction of the air outlets 40a and 40b. That is, the air guide plates 11a and 11b are made larger than the length of the edges of the air outlets 40a and 40b in the longitudinal direction. By doing so, the diffusion of the air flow blown out from the air outlets 40a and 40b in the width direction is further suppressed, so that the effect of suppressing an increase in the blowing resistance can be enhanced.

[0031] As described above, the air conditioner 100 according to Embodiment 1 includes a housing 1 having a suction port 20 and two blowout ports 40a and 40b, two blowers 5a and 5b arranged side by side in the width direction inside the housing 1 and blowing out the air sucked from the suction port 20 from different ones of the two blowout ports 40a and 40b, a partition plate 10 provided between the two blowers 5a and 5b, and air guide plates 11a and 11b provided at the respective edges of the two blowout ports 40a and 40b and protruding outside the housing 1. The two air guide plates 11a and 11b are provided so as to be located between the two blowout ports 40a and 40b, and the angle θ with respect to the opening surfaces of the blowout ports 40a and 40b where each is provided is set to be 90° or less.

[0032] According to the air conditioner 100 according to Embodiment 1, the partition plate 10 is provided between the two blowers 5a and 5b. Therefore, even if the distance between the two blowers 5a and 5b is short, it is possible to suppress the air sucked from the blowers 5a and 5b from interfering with each other and the loads of the two blowers 5a and 5b from becoming uneven. In addition, the two air guide plates 11a and 11b are provided at the respective edges of the two blowout ports 40a and 40b. The two air guide plates 11a and 11b are provided so as to be located between the two blowout ports 40a and 40b, and the angle θ with respect to the opening surfaces of the blowout ports 40a and 40b where each is provided is set to be 90° or less. Therefore, it is possible to suppress the flow of the air blown out from the blowout ports 40a and 40b from diffusing in the width direction and suppress the increase in the blowing resistance. As a result, since the loads of the two blowers 5a and 5b becoming uneven and the blowing resistance increasing are suppressed, it is possible to suppress the decrease in the operating efficiency.

[0033] Further, in the air conditioner 100 according to Embodiment 1, the two air guide plates 11a and 11b are provided so as to be within the width in the width direction of the blowout ports 40a and 40b where each is provided.

[0034] According to the air conditioner 100 according to Embodiment 1, it is not necessary to make the air guide plates 11a and 11b unnecessarily long.

[0035] Also, in the air conditioner 100 according to Embodiment 1, the area of the partition plate 10 is larger than the opening areas of the suction ports 52a and 52b of the two blowers 5a and 5b.

[0036] According to the air conditioner 100 according to Embodiment 1, it is further suppressed that the air flowing from the suction port 20 to the blowers 5a and 5b is snatched by the blowers 5a and 5b. Therefore, it is possible to enhance the effect of suppressing the interference between the air sucked from the suction ports 52a and 52b of the blowers 5a and 5b and the uneven load of the two blowers 5a and 5b. As a result, it is possible to enhance the effect of suppressing the decrease in the operating efficiency, and it is possible to enhance the effect of suppressing the decrease in the aerodynamic performance caused by the decrease in the operating efficiency.

[0037] Also, in the air conditioner 100 according to Embodiment 1, the end portion of the partition plate 10 on the suction port 20 side is located closer to the suction port 20 than the end portions of the suction ports 52a and 52b of the two blowers 5a and 5b on the suction port 20 side.

[0038] According to the air conditioner 100 according to Embodiment 1, it is further suppressed that the air flowing from the suction port 20 to the blowers 5a and 5b is snatched by the blowers 5a and 5b. Therefore, it is possible to further enhance the effect of suppressing the interference between the air sucked from the suction ports 52a and 52b of the blowers 5a and 5b and the uneven load of the two blowers 5a and 5b. As a result, it is possible to further enhance the effect of suppressing the decrease in the operating efficiency, and it is possible to further enhance the effect of suppressing the decrease in the aerodynamic performance caused by the decrease in the operating efficiency.

[0039] Also, in the air conditioner 100 according to Embodiment 1, the two air guide plates 11a and 11b have a rectangular shape and are provided so that the longitudinal direction thereof is along the respective edges of the two air outlets 40a and 40b, and is larger than the length of the respective edges of the two air outlets 40a and 40b in the longitudinal direction.

[0040] According to the air conditioner 100 according to Embodiment 1, since the flow of the air blown out from the air outlets 40a and 40b is further suppressed from being diffused in the width direction, the effect of suppressing an increase in the blowing resistance can be enhanced.

[0041] Embodiment 2. Hereinafter, Embodiment 2 will be described. For those overlapping with Embodiment 1, the description will be omitted, and the same reference numerals will be given to the same or corresponding parts as in Embodiment 1.

[0042] In the air conditioner 100 according to Embodiment 1, the angles θ of the air guide plates 11a and 11b are provided so as to be 90° or less, and the angle θ is invariant. On the other hand, in the air conditioner 100 according to Embodiment 2, the angles θ of the air guide plates 11a and 11b are variably provided at an angle of 90° or less. Therefore, in Embodiment 2, air guide plate motors (not shown) that are respectively connected to the two air guide plates 11a and 11b and rotate them are provided separately from the motors 9a and 9b. Note that, in Embodiment 2, the configuration is such that air guide plate motors are respectively connected to the two air guide plates 11a and 11b, but the present invention is not limited thereto, and a configuration in which the same air guide plate motor is connected to the two air guide plates 11a and 11b may be employed. However, in Embodiment 2, the configuration is such that the motors 9a and 9b are respectively connected to the fans 51a and 51b of the two blowers 5a and 5b.

[0043] The control device 30 respectively detects the loads of the motors 9a and 9b that drive the fans 51a and 51b of the blowers 5a and 5b. Here, as a method for detecting the loads of the motors 9a and 9b, for example, a method of detecting the current values input to the motors 9a and 9b using current sensors, etc., is used, but the present invention is not limited thereto, and other methods such as detecting the power consumption of the motors 9a and 9b may also be used. Then, when the difference ΔL between the load of the motor 9a and the load of the motor 9b exceeds a preset first threshold value Th1, the control device 30 rotates the air guide plates 11a and 11b so that the angle θ of the air guide plates 11a and 11b becomes smaller by a preset first angle θ1. Here, ΔL is an absolute value.

[0044] Further, when the difference ΔL between the load of the motor 9a and the load of the motor 9b is equal to or less than a preset second threshold value Th2 (< Th1), the control device 30 rotates the air guide plates 11a and 11b so that the angle θ of the air guide plates 11a and 11b increases by a preset second angle θ2. Here, the first angle θ1 and the second angle θ2 may be the same value or different values. In this way, the loads of the two motors 9a and 9b are detected, and the angle θ of the air guide plates 11a and 11b is controlled according to the difference ΔL between the load of the motor 9a and the load of the motor 9b. By doing so, it is possible to suppress the non-uniformity of the loads of the two blowers 5a and 5b, suppress a decrease in the operation efficiency due to the occurrence of an imbalance in the current values between the two blowers 5a and 5b, and suppress a decrease in the aerodynamic performance caused by the decrease in the operation efficiency.

[0045] In the second embodiment, the air guide plates 11a and 11b have a regulation structure that does not exceed 90°. The regulation structure is, for example, a stopper provided at a position where the air guide plates 11a and 11b collide when the angle θ is 90°.

[0046] FIG. 11 is a diagram showing a control flow of the air guide plates 11a and 11b performed by the control device 30 during the operation of the air conditioner 100 according to the first embodiment. Hereinafter, the control flow of the air guide plates 11a and 11b during the operation of the air conditioner 100 will be described with reference to FIG. 11. When the operation of the air conditioner 100 is started or when there is a change in the air volume setting, the process proceeds to step S101.

[0047] (Step S101) The control device 30 detects the loads of the two motors 9a and 9b, and determines whether the difference ΔL between the load of the motor 9a and the load of the motor 9b is greater than a preset first threshold value Th1. When the control device 30 determines that the difference ΔL between the load of the motor 9a and the load of the motor 9b is greater than the first threshold value Th1 (YES), the process proceeds to step S102. On the other hand, when the control device 30 determines that the difference ΔL between the load of the motor 9a and the load of the motor 9b is not greater than the first threshold value Th1 (NO), the process repeats step S101.

[0048] (Step S102) The control device 30 rotates the air guide plates 11a and 11b so that the angle θ of the air guide plates 11a and 11b becomes smaller by a preset first angle θ1.

[0049] (Step S103) The control device 30 detects the loads of the two motors 9a and 9b, and determines whether the difference ΔL between the load of the motor 9a and the load of the motor 9b is smaller than a preset second threshold value Th2. When the control device 30 determines that the difference ΔL between the load of the motor 9a and the load of the motor 9b is smaller than the second threshold value Th2 (YES), the process proceeds to step S104. On the other hand, when the control device 30 determines that the difference ΔL between the load of the motor 9a and the load of the motor 9b is not smaller than the second threshold value Th2 (NO), the process returns to step S102.

[0050] (Step S104) The control device 30 maintains the angle θ of the air guide plates 11a and 11b. That is, nothing is done in terms of processing.

[0051] (Step S105) The control device 30 detects the loads of the two motors 9a and 9b, and determines whether the difference ΔL between the load of the motor 9a and the load of the motor 9b is greater than a first threshold value Th1. When the control device 30 determines that the difference ΔL between the load of the motor 9a and the load of the motor 9b is greater than the first threshold value Th1 (YES), the process returns to step S102. On the other hand, when the control device 30 determines that the difference ΔL between the load of the motor 9a and the load of the motor 9b is not greater than the first threshold value Th1 (NO), the process proceeds to step S106.

[0052] Note that step S105 is a process assuming a case where the difference ΔL between the load of the motor 9a and the load of the motor 9b fluctuates due to external factors. By this process, even if the difference ΔL between the load of the motor 9a and the load of the motor 9b becomes greater than the first threshold value Th1 due to external factors, the process can return to step S102, and the process of reducing the difference ΔL between the load of the motor 9a and the load of the motor 9b again (steps S102 to S103) can be performed.

[0053] (Step S106) The control device 30 detects the loads of the two motors 9a and 9b, and determines whether a state where the difference ΔL between the load of the motor 9a and the load of the motor 9b is smaller than a second threshold value Th2 has elapsed for a preset fixed time T1 or more. When the control device 30 determines that a state where the difference ΔL between the load of the motor 9a and the load of the motor 9b is smaller than the second threshold value Th2 has elapsed for the fixed time T1 or more (YES), the process proceeds to step S107. On the other hand, when the control device 30 determines that a state where the difference ΔL between the load of the motor 9a and the load of the motor 9b is smaller than the second threshold value Th2 has not elapsed for the fixed time T1 or more (NO), the process returns to step S104.

[0054] (Step S107) The control device 30 rotates the air guide plates 11a and 11b so that the angle θ of the air guide plates 11a and 11b increases by a preset second angle θ2.

[0055] (Step S108) The control device 30 detects the loads of the two motors 9a and 9b, and determines whether the difference ΔL between the load of the motor 9a and the load of the motor 9b is greater than the second threshold value Th2. When the control device 30 determines that the difference ΔL between the load of the motor 9a and the load of the motor 9b is greater than the second threshold value Th2 (YES), the process returns to step S101. On the other hand, when the control device 30 determines that the difference ΔL between the load of the motor 9a and the load of the motor 9b is not greater than the second threshold value Th2 (NO), the process returns to step S107.

[0056] FIG. 12 is a diagram showing the control flow of the air deflectors 11a and 11b performed by the control device 30 when the air conditioner 100 according to the first embodiment stops operating. Hereinafter, the control flow of the air deflectors 11a and 11b when the air conditioner 100 stops operating will be described with reference to FIG. 12. When the operation of the air conditioner 100 is stopped, the process proceeds to step S201.

[0057] (Step S201) The control device 30 rotates the air deflectors 11a and 11b so that the angle θ of the air deflectors 11a and 11b becomes 90°.

[0058] Thereby, after the restart of the operation of the air conditioner 100, the air deflectors 11a and 11b can always be in the same position.

[0059] FIG. 13 is a diagram showing a modified example of the control flow of the air deflectors 11a and 11b performed by the control device 30 during the operation of the air conditioner 100 according to the first embodiment. Note that the control flow of the air deflectors 11a and 11b during the operation of the air conditioner 100 may be a simpler control flow than the control flow shown in FIG. 11, as shown in FIG. 13. That is, when the control device 30 determines that the difference ΔL between the load of the motor 9a and the load of the motor 9b is greater than the first threshold value Th1, only the process of reducing the angle θ of the air deflectors 11a and 11b until it becomes smaller than the second threshold value Th2 may be performed.

[0060] As described above, the air conditioner 100 according to Embodiment 2 includes motors 9a and 9b that drive the two blowers 5a and 5b respectively, and a control device 30 that rotates the two air guide plates 11a and 11b according to the difference ΔL in the loads of the two motors 9a and 9b.

[0061] According to the air conditioner 100 according to Embodiment 2, the two air guide plates 11a and 11b are rotated according to the difference in the loads ΔL of the two motors 9a and 9b. Therefore, it is possible to suppress the loads of the two blowers 5a and 5b from becoming non-uniform, suppress a decrease in the operating efficiency caused by an imbalance in the current values between the two blowers 5a and 5b, and suppress a decrease in the aerodynamic performance caused by a decrease in the operating efficiency.

Description of Reference Numerals

[0062] 1 housing, 2 front plate, 4 upper surface (of the housing), 5a blower, 5b blower, 6 heat exchanger, 7 drain pan, 8 control box, 9a motor, 9b motor, 10 partition plate, 11 air guide plate, 11a air guide plate, 11a1 upper surface (of the air guide plate), 11b air guide plate, 11b1 upper surface (of the air guide plate), 20 suction port, 30 control device, 40a blowout port, 40b blowout port, 50a fan casing, 50b fan casing, 51a fan, 51b fan, 52a suction opening, 52b suction opening, 60 duct, 100 air conditioner.

Claims

1. A housing having a suction port and two blowout ports, Two blowers arranged side by side in the width direction inside the housing, which blow out the air sucked from the suction port from different ones of the two blowout ports, A partition plate provided between the two blowers, Wind guide plates provided at the edges of the two blowout ports respectively and protruding outside the housing, and comprising: The two wind guide plates, Are provided so as to be located between the two blowout ports, and are provided so that the angle with respect to the opening surface of the blowout port provided respectively is 90° or less, Are provided so as to be within the width in the width direction of the blowout port provided respectively Air conditioner.

2. A housing having a suction port and two blowout ports, Two blowers arranged side by side in the width direction inside the housing, which blow out the air sucked from the suction port from different ones of the two blowout ports, A partition plate provided between the two blowers, Wind guide plates provided at the edges of the two blowout ports respectively and protruding outside the housing, and comprising: The two wind guide plates, Are provided so as to be located between the two blowout ports, and are provided so that the angle with respect to the opening surface of the blowout port provided respectively is 90° or less, The two wind guide plates have a rectangular shape and are provided so that the longitudinal direction is along the edges of the two blowout ports respectively, and are larger than the lengths of the edges of the two blowout ports respectively in the longitudinal direction Air conditioner.

3. A housing having a suction port and two blowout ports, Two blowers arranged side by side in the width direction inside the housing, which blow out the air sucked from the suction port from different ones of the two blowout ports, A partition plate provided between the two blowers, Wind guide plates provided at the edges of the two blowout ports respectively and protruding outside the housing, and comprising: The two wind guide plates, Are provided so as to be located between the two blowout ports, and are provided so that the angle with respect to the opening surface of the blowout port provided respectively is 90° or less, Motors for driving the two blowers respectively, An air conditioner comprising a control device for rotating the two wind guide plates according to the difference in the loads of the two motors.

4. The control device, When the difference in the loads of the two motors exceeds a preset first threshold value, the two air guide plates are rotated so that the angles of the two air guide plates become smaller than a preset first angle. The air conditioner according to claim 3.

5. The control device is The two air guide plates are rotated so that the angles of the two air guide plates become smaller than the first angle until the difference in the loads of the two motors becomes smaller than a preset second threshold value smaller than the first threshold value. The air conditioner according to claim 4.

6. The control device is When the state where the difference in the loads of the two motors is smaller than the second threshold value has elapsed for a preset fixed time or more, the two air guide plates are rotated so that the angles of the two air guide plates become larger than a preset second angle. The air conditioner according to claim 5.

7. The control device is The two air guide plates are rotated so that the angles of the two air guide plates become larger than the second angle until the difference in the loads of the two motors becomes larger than the second threshold value. The air conditioner according to claim 6.

8. The area of the partition plate is larger than the opening areas of the suction ports of the two blowers. The air conditioner according to any one of claims 1 to 7.

9. The end portion of the partition plate on the suction port side is located closer to the suction port side than the end portions of the suction ports of the two blowers on the suction port side. The air conditioner according to claim 8.

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