dehumidifier

Abstract

To provide a humidity control device which can improve dehumidification efficiency of a dehumidification rotor while suppressing inrush current in a heating part.SOLUTION: A humidity control device 10 comprises a first motor 12, a plurality of heaters 15, a first rotation control part 31, and a heating control part 34. The first motor 12 rotates a dehumidification rotor 11. The heater 15 heats the dehumidification rotor 11. The first rotation control part 31 controls the first motor 12. The heating control part 34 controls the plurality of heaters 15. The heating control part 34 executes a first heating treatment and a second heating treatment when electric power is supplied to the heater 15. In the first heating treatment, electric power is supplied to two or more heaters 15 of the plurality of heaters 15. The second heating treatment is executed after the first heating treatment, and in the second heating treatment, electric power is supplied to a lower number of heaters 15 than in the first heating treatment. The first rotation control part 31 controls rotation of the first motor 12 when the heating control part 34 executes the second heating treatment.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention provides dehumidifier Regarding. [Background technology]

[0002] Humidity control devices with dehumidification functions have been developed. For example, the humidity control device disclosed in Patent Document 1 includes a dehumidifying rotor, a condenser, a blower fan, a regenerative heater, and a regenerative fan within its main body. In the humidity control device disclosed in Patent Document 1, moist air to be dehumidified is blown into the dehumidifying rotor, which is rotated by a drive motor or the like, and the moisture in the air to be dehumidified is adsorbed by the moisture absorbent in the moisture absorption section of the dehumidifying rotor, turning it into dry air. Meanwhile, the moisture-adsorbed moisture of the moisture absorbent in the dehumidifying rotor is removed and regenerated when high-temperature regeneration air heated by the regenerative heater is sent to the dehumidifying rotor by the regeneration fan. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2000-126540 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in conventional humidity control devices such as the humidity control device of Patent Document 1, the regenerative heater has low resistance when cold, so when power is supplied to it while it is cold, a large current flows through it to generate heat. Therefore, when all the regenerative heaters provided in the humidity control device are turned on simultaneously, the inrush current of the regenerative heaters increases. In particular, when the regenerative fan rotation speed is high, heat is taken from the regenerative heaters, so the inrush current of the regenerative heaters increases.

[0005] On the other hand, by turning on multiple regenerative heaters individually, the inrush current of the entire regenerative heater can be suppressed. However, it takes time for all the regenerative heaters to turn on, which means that the dehumidifying rotor cannot immediately demonstrate its dehumidifying capacity, resulting in a problem of reduced dehumidifying efficiency.

[0006] The present invention has been made in view of the above-mentioned problems, and has an object to provide a humidity control device that can improve the dehumidification efficiency of the dehumidification rotor while suppressing the inrush current of the heating section. [Means for solving the problem]

[0007] In order to achieve the above object, in the present invention, a humidity control device includes a first rotating unit, a plurality of heating units, a first rotation control unit, and a heating control unit. The first rotating unit rotates a dehumidifying rotor. The plurality of heating units heat the dehumidifying rotor. The first rotation control unit controls the first rotating unit. The heating control unit controls the plurality of heating units. When power is supplied to the heating units, the heating control unit executes a first heating process and a second heating process. The first heating process refers to a process of supplying power to two or more heating units among the plurality of heating units. The second heating process is executed after the first heating process, and refers to a process of supplying power to a smaller number of heating units than in the first heating process, other than the heating units that received power in the first heating process. The first rotation control unit controls the rotation of the first rotating unit when the heating control unit executes the second heating process. [Effects of the Invention]

[0008] According to the humidity control device of the present invention, the dehumidification efficiency of the dehumidification rotor can be improved while suppressing the inrush current of the heating unit. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a block diagram showing the overall configuration of a humidity control device according to an embodiment of the present invention. [Figure 2] 1 is an explanatory diagram showing the overall configuration of a humidity control device according to an embodiment of the present invention. [Figure 3] FIG. 2 is a circuit diagram showing the arrangement of heaters in the humidity control device according to the present embodiment. [Figure 4] FIG. 3 is a flow chart showing the control of the dehumidifying rotor, regenerative fan, and heater of the humidity control device according to the present embodiment. [Figure 5] This is a graph showing the changes in the heater output current, the rotation speed of the regeneration fan, and the rotation speed of the dehumidification rotor when the rotation speeds of the dehumidification rotor and the regeneration fan are changed during the second heating process of the heater in a humidity control device of this embodiment. [Figure 6] This is a graph showing the changes in the heater output current, the rotation speed of the regeneration fan, and the rotation speed of the dehumidification rotor when the rotation speeds of the dehumidification rotor and regeneration fan are kept constant during the second heating process of the heater in a humidity control device of this embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0011] First, a humidity control apparatus 10 according to an embodiment will be described. Fig. 1 is a block diagram showing the overall configuration of the humidity control apparatus 10 according to this embodiment. Fig. 2 is an explanatory diagram showing the overall configuration of the humidity control apparatus 10 according to this embodiment. Fig. 3 is a circuit diagram showing the arrangement of a heater 15 of the humidity control apparatus 10 according to this embodiment.

[0012] As shown in FIG. 1, the humidity control device 10 includes a dehumidifying rotor 11, a first motor 12 (an example of a "first rotating part"), a regenerative fan 13, a second motor 14 (an example of a "second rotating part"), a heater 15 (an example of a "heating part"), a heat exchanger 16, a drainage tank 17, a fan 18, and a third motor 19.

[0013] 2, the dehumidifying rotor 11, the regeneration fan 13, the heater 15, the heat exchanger 16, the drain tank 17, and the fan 18 are arranged inside a casing 20. The casing 20 has an intake port 21 and an outlet port 22 formed therein.

[0014] In the humidity control device 10, moist air K to be dehumidified is taken in through the intake port 21 of the casing 20 by the rotation of the fan 18. The taken in air K to be dehumidified is supplied to the dehumidifying rotor 11. Moisture contained in the air K to be dehumidified supplied to the dehumidifying rotor 11 is adsorbed by the dehumidifying section 11a of the dehumidifying rotor 11. The air K to be dehumidified from which moisture has been adsorbed is discharged as dried air from the outlet 22 of the casing 20.

[0015] Meanwhile, in the humidity control device 10, regeneration air S heated by the heater 15 is supplied to the adsorbent in the dehumidifying section 11a of the dehumidifying rotor 11 by the rotation of the regeneration fan 13. The adsorbent in the dehumidifying section 11a of the dehumidifying rotor 11 is heated by the regeneration air S, thereby removing moisture and regenerating the adsorbent. That is, the dehumidifying section 11a of the dehumidifying rotor 11 releases the moisture adsorbed by the adsorbent in a high-temperature, high-humidity state. The warm, moist regeneration air S, which contains moisture from the adsorbent in the dehumidifying section 11a, passes through the heat exchanger 16, where moisture is removed. That is, the heat exchanger 16 condenses the water vapor into water droplets. The regeneration air S is then supplied to the adsorbent in the dehumidifying section 11a of the dehumidifying rotor 11 in a dried state. The dehumidifying rotor 11, regeneration fan 13, heater 15, and heat exchanger 16 are installed in the closed air duct 23 for the regeneration air S.

[0016] The dehumidifying rotor 11 is formed in a disk shape. The dehumidifying rotor 11 is arranged so that airflow passes through it in the thickness direction. The dehumidifying rotor 11 is rotated by a first motor 12 shown in FIG. 1. The rotation axis 11b of the dehumidifying rotor 11 passes through the center of the dehumidifying rotor 11 and is aligned with the airflow passing through the dehumidifying rotor 11. The dehumidifying rotor 11 rotates when driven by the first motor 12, thereby changing the area through which the airflow passes. The dehumidifying rotor 11 has a dehumidifying section 11a.

[0017] The dehumidifying section 11a is a desiccant that adsorbs moisture in the air K to be dehumidified that is taken in through the intake port 21 of the casing 20. The dehumidifying section 11a is, for example, a zeolite element. The dehumidifying section 11a is regenerative, and when heated by the regeneration air S that is heated by the heater 15, it releases the adsorbed moisture and becomes able to adsorb moisture again.

[0018] 1, the first motor 12 rotates the dehumidifying rotor 11. The first motor 12 is connected to the dehumidifying rotor 11.

[0019] The regeneration fan 13 sends the regeneration air S to the heater 15. The regeneration fan 13 is rotated by the drive of the second motor 14, and generates an airflow of the regeneration air S.

[0020] The second motor 14 rotates the regeneration fan 13, which sends air to the heater 15. The second motor 14 is connected to the regeneration fan 13.

[0021] The heater 15 heats the dehumidifying rotor 11. More specifically, the heater 15 generates heat to heat the regeneration air S, and the heated regeneration air S heats the dehumidifying rotor 11. The heater 15 is configured, for example, by a PTC (Positive Temperature Coefficient) heater. By configuring the heater 15 as a PTC heater, abnormal temperature rises in the heater 15 can be suppressed.

[0022] In the humidity control device 10, the dehumidifying rotor 11 is heated by a plurality of heaters 15. As shown in FIG. 3, the heaters 15 are arranged in a row. Specifically, for example, four heaters 15 are arranged in series. In the humidity control device 10, a plurality of heaters 15 are arranged in a row to form a plurality of rows of heaters 15. Specifically, for example, the humidity control device 10 is configured with three rows of heater units: a first heater unit 15A (an example of a "row of heating units"), a second heater unit 15B (an example of a "row of heating units"), and a third heater unit 15C (an example of a "row of heating units"), each of which has four heaters 15 arranged in series. The first heater unit 15A is arranged in parallel with the second heater unit 15B. The second heater unit 15B is arranged in parallel with the third heater unit 15C.

[0023] As shown in Fig. 2, warm, moist regeneration air S is introduced into the heat exchanger 16 from the dehumidifying rotor 11. Air to be dehumidified K taken in from an intake port 21 of a casing 20 on the outside passes through the heat exchanger 16. As the air to be dehumidified K passes through the heat exchanger 16, the regeneration air S introduced into the heat exchanger 16 is cooled, and the moisture contained in the regeneration air S condenses.

[0024] The drainage tank 17 is a tank that recovers moisture contained in the regeneration air S that has condensed in the heat exchanger 16. The drainage tank 17 is disposed below the heat exchanger 16.

[0025] The fan 18 generates an air current that discharges the air K to be dehumidified, which is taken in through the intake port 21 of the casing 20, from the outlet port 22 of the casing 20. The fan 18 is rotated by the drive of the third motor 19, and generates an air current of the air K to be dehumidified.

[0026] The third motor 19 rotates the fan 18. The third motor 19 is connected to the fan 18.

[0027] As shown in Fig. 1, the humidity control apparatus 10 further includes a processing device 30. The processing device 30 controls the entire humidity control apparatus 10. The processing device 30 is configured, for example, by a microcomputer having a processor and memory. The processing device 30 includes a first rotation control unit 31, a second rotation control unit 32, a third rotation control unit 33, and a heating control unit 34.

[0028] The first rotation control unit 31 controls the rotation of the dehumidifying rotor 11. More specifically, the first rotation control unit 31 controls the rotation of the dehumidifying rotor 11 by controlling the first motor 12. The first rotation control unit 31 is connected to the first motor 12.

[0029] The second rotation control unit 32 controls the rotation of the regeneration fan 13. More specifically, the second rotation control unit 32 controls the rotation of the regeneration fan 13 by controlling the second motor 14. The second rotation control unit 32 is connected to the second motor 14.

[0030] The third rotation control unit 33 controls the rotation of the fan 18. More specifically, the third rotation control unit 33 controls the rotation of the fan 18 by controlling the third motor 19. The third rotation control unit 33 is connected to the third motor 19.

[0031] The heating control unit 34 controls the heater 15. The heating control unit 34 controls the power supply state of the heater 15 to operate and stop the heater 15 and adjust the temperature of the heater 15.

[0032] As shown in FIGS. 1 and 3, the heating control unit 34 controls the supply of power to each heater 15 of the first heater unit 15A and the second heater unit 15B via the first relay 35. Specifically, the heating control unit 34 controls the first relay 35. The first relay 35 controls the on / off of each heater 15 of the first heater unit 15A and the second heater unit 15B. The heating control unit 34 is connected to the first relay 35. The first relay 35 is connected to the first heater unit 15A and the second heater unit 15B.

[0033] The heating control unit 34 controls the supply of power to each heater 15 of the third heater unit 15C via the second relay 36. Specifically, the heating control unit 34 controls the second relay 36. The second relay 36 controls the on / off of each heater 15 of the third heater unit 15C. The heating control unit 34 is connected to the second relay 36. The second relay 36 is connected to the third heater unit 15C.

[0034] Here, the heater 15 has low resistance when it is cold. Therefore, when power is supplied to the heater 15 while it is cold, it attempts to generate heat by passing a large current through it. Therefore, if the heaters 15 of the first heater unit 15A, the second heater unit 15B, and the third heater unit 15C are turned on simultaneously, the inrush current of the heater 15 increases. Therefore, in order to suppress the inrush current of the heater 15, it is conceivable to control the heaters 15 so that they are turned on sequentially for each heater unit (each column) (for example, the heaters 15 are turned on in the order of the first heater unit 15A, the second heater unit 15B, and the third heater unit 15C).

[0035] However, if the heater 15 is turned on for each heater unit, it takes time for all heaters 15 to be turned on, and the dehumidifying capacity of the dehumidifying rotor 11 cannot be immediately demonstrated. Also, in order to turn on the heater 15 for each heater unit, a relay must be provided for each heater unit (three relays must be provided in the case of the humidity control device 10), which increases the number of parts.

[0036] Therefore, the heating control unit 34 executes a first heating process and a second heating process when power is supplied to each heater 15. Here, the first heating process refers to a process in which power is supplied to two or more heater units (heating sections) among the multiple heater units (heating sections). Also, the second heating process refers to a process that is executed after the first heating process and in which power is supplied to a smaller number of heater units (heating sections) than in the first heating process.

[0037] By executing the first heating process and the second heating process, the heating control unit 34 divides the timing of supplying power to the heaters 15 into the heaters 15 of the first heater unit 15A and the second heater unit 15B and the heaters 15 of the third heater unit 15C. This reduces the inrush current of the heaters 15 compared to turning on the heaters 15 of the first heater unit 15A, the second heater unit 15B, and the third heater unit 15C simultaneously. Furthermore, this reduces the time it takes for all the heaters 15 to be turned on compared to turning on the heaters 15 one by one (each row) of the heater units sequentially. This allows the dehumidifying rotor 11 to immediately demonstrate its dehumidifying capacity, improving the dehumidifying efficiency of the dehumidifying rotor 11.

[0038] Furthermore, when the first heating process is performed, the heating control unit 34 turns on the first relay 35 to supply power to the first heater unit 15A and the second heater unit 15B. Furthermore, when the second heating process is performed, the heating control unit 34 turns on the second relay 36 to supply power to the third heater unit 15C. This allows the humidity control device 10 to reduce the number of relays (reducing the number of relays from three to two).

[0039] Specifically, when starting to supply power to each heater 15, the heating control unit 34 first performs a first heating process. When performing the first heating process, the heating control unit 34 supplies power to two heater units (the first heater unit 15A and the second heater unit 15B) out of three heater units (the first heater unit 15A, the second heater unit 15B, and the third heater unit 15C). That is, when performing the first heating process, the heating control unit 34 supplies power to the heaters 15 that form the first heater unit 15A and the second heater unit 15B (one of the heater 15 rows) out of the first heater unit 15A, the second heater unit 15B, and the third heater unit 15C (rows of multiple heaters 15). More specifically, when performing the first heating process, the heating control unit 34 turns on the first relay 35 to supply power to the first heater unit 15A and the second heater unit 15B. As a result, power is supplied to each of the heaters 15 of the first heater unit 15A and the second heater unit 15B.

[0040] Furthermore, the heating control unit 34 performs the second heating process after performing the first heating process. When performing the second heating process, the heating control unit 34 supplies power to one heater unit (third heater unit 15C), which is fewer in number than in the first heating process. That is, when performing the second heating process, the heating control unit 34 supplies power to the heaters 15 that form the third heater unit 15C (the other heater 15 row) among the first heater unit 15A, the second heater unit 15B, and the third heater unit 15C (a row of multiple heaters 15). More specifically, when performing the second heating process, the heating control unit 34 turns on the second relay 36 to supply power to the third heater unit 15C. This supplies power to each heater 15 of the third heater unit 15C.

[0041] In this way, when performing the first heating process, the heating control unit 34 supplies power to the heaters 15 that form the first heater unit 15A and the second heater unit 15B out of the first heater unit 15A, the second heater unit 15B, and the third heater unit 15C. When performing the second heating process, the heating control unit 34 supplies power to the heaters 15 that form the third heater unit 15C. This reduces the inrush current of the heaters 15 compared to when the heaters 15 of the first heater unit 15A, the second heater unit 15B, and the third heater unit 15C are all turned on simultaneously. Furthermore, compared to when the heaters 15 are turned on sequentially for each heater unit (each column), the time required for all heaters 15 to be turned on can be reduced. This allows the dehumidifying rotor 11 to quickly demonstrate its dehumidifying capacity, improving the dehumidifying efficiency of the dehumidifying rotor 11.

[0042] On the other hand, if the regeneration fan 13 is rotating at a high speed when power is supplied to the heater 15 in a cold state, a large amount of regeneration air S is supplied to the heater 15, which draws heat from the heater 15. This causes the heater 15 to pass a large current to generate more heat, resulting in an even larger inrush current to the heater 15.

[0043] Therefore, when the heating control unit 34 supplies power to each heater 15, the second rotation control unit 32 controls the rotation speed of the regeneration fan 13 by controlling the second motor 14. Specifically, the second rotation control unit 32 controls the rotation of the second motor 14 when the heating control unit 34 performs the second heating process. More specifically, the second rotation control unit 32 reduces the rotation speed of the regeneration fan 13 by slowing the rotation of the second motor 14 when the heating control unit 34 performs the second heating process. Alternatively, the second rotation control unit 32 stops the regeneration fan 13 by stopping the second motor 14. In other words, when the heating control unit 34 performs the second heating process, the rotation of the second motor 14 is slower than the rotation speed during normal operation of the regeneration fan 13. In this way, when the heating control unit 34 performs the second heating process, the second rotation control unit controls the rotation of the second motor 14, so that a large amount of regeneration air S is not supplied to the heater 15, making it difficult for heat to be removed from the heater 15. Therefore, the heater 15 does not generate additional heat due to a large current flowing therethrough, and the inrush current of the heater 15 can be suppressed.

[0044] On the other hand, if the rotation speed of the regeneration fan 13 is reduced or the regeneration fan 13 is stopped in order to suppress the inrush current of the heater 15, the regeneration air S is no longer supplied to the heater 15. As a result, the heat of the heater 15 is trapped in the dehumidifying rotor 11, and the trapped heat of the heater 15 causes discoloration or deformation of the dehumidifying rotor 11.

[0045] Therefore, when the heating control unit 34 supplies power to each heater 15, the first rotation control unit 31 controls the rotation speed of the dehumidifying rotor 11 by controlling the first motor 12. Specifically, the first rotation control unit 31 controls the rotation of the first motor 12 when the heating control unit 34 performs the second heating process. More specifically, the first rotation control unit 31 increases the rotation speed of the dehumidifying rotor 11 by increasing the rotation speed of the first motor 12 when the heating control unit 34 performs the second heating process. In other words, when the heating control unit 34 performs the second heating process, the first rotation control unit 31 increases the rotation speed of the first motor 12 faster than the rotation speed during normal operation of the dehumidifying rotor 11. In this way, when the heating control unit 34 performs the second heating process, the first rotation control unit 31 controls the rotation of the first motor 12, making it less likely that heat from the heater 15 will be trapped in the dehumidifying rotor 11. This makes it possible to prevent discoloration or deformation of the dehumidifying rotor 11 due to the trapped heat from the heater 15.

[0046] Next, the control flow of the dehumidifying rotor 11, the regeneration fan 13, and the heater 15 when power is supplied to each heater 15 will be described. FIG. 4 is a flow diagram showing the control of the dehumidifying rotor 11, the regeneration fan 13, and the heater 15 of the humidity control apparatus 10 according to this embodiment. FIG. 5 is a graph showing changes in the output current of the heater 15, the rotation speed of the regeneration fan 13, and the rotation speed of the dehumidifying rotor 11 when the rotation speeds of the dehumidifying rotor 11 and the regeneration fan 13 are changed during the second heating process of the heater 15 in the humidity control apparatus 10 according to this embodiment. FIG. 6 is a graph showing changes in the output current of the heater 15, the rotation speed of the regeneration fan 13, and the rotation speed of the dehumidifying rotor 11 when the rotation speeds of the dehumidifying rotor 11 and the regeneration fan 13 are kept constant during the second heating process of the heater 15 in the humidity control apparatus 10 according to this embodiment.

[0047] 1, 4, and 5, the heating control unit 34 executes a first heating process (S1) to supply power to each heater 15 when regenerating the adsorbent in the dehumidifying unit 11a of the dehumidifying rotor 11. At this time, the first rotation control unit 31 controls the rotation of the first motor 12 so that the rotation speed of the dehumidifying rotor 11 becomes the rotation speed R1 (e.g., 1 rpm) during normal operation. Similarly, the second rotation control unit 32 controls the rotation of the second motor 14 so that the rotation speed of the regeneration fan 13 becomes the rotation speed R2 (e.g., 3000 rpm) during normal operation.

[0048] When the heating control unit 34 executes the first heating process, the first relay 35 is turned on and power is supplied to each of the heaters 15 of the first heater unit 15A and the second heater unit 15B. At this time, a first inrush current A1 (for example, an inrush current of up to 14.8 A) flows through the heater 15, but this current gradually decreases to the current during normal operation.

[0049] The heating control unit 34 executes the first heating process and, after a predetermined time (e.g., 30 seconds) has elapsed, executes the second heating process (S2). At this time, the first rotation control unit 31 speeds up the rotation of the first motor 12 compared to the rotation of the dehumidifying rotor 11 during normal operation (S3), so that the rotation speed R3 of the dehumidifying rotor 11 is greater than the rotation speed R1 during normal operation (e.g., so that the rotation speed of the dehumidifying rotor 11 is 1 rpm to 1.5 rpm during normal operation). Meanwhile, the second rotation control unit 32 speeds up the rotation of the second motor 14 compared to the rotation speed of the regenerative fan 13 during normal operation (S4), so that the rotation speed R4 of the regenerative fan 13 is smaller than the rotation speed R2 during normal operation (e.g., so that the rotation speed of the regenerative fan 13 is 500 rpm instead of 3000 rpm during normal operation).

[0050] When the heating control unit 34 executes the second heating process, the second relay 36 is turned on, and power is supplied to each heater 15 of the third heater unit 15C. Furthermore, the rotation speed of the regeneration fan 13 is reduced compared to the rotation speed during normal operation, thereby reducing the amount of regeneration air S supplied to the heater 15. This makes it difficult for heat to be removed from the heater 15, and the heater 15 does not generate additional heat due to a large current flow. Therefore, as shown in FIG. 5, a second inrush current A2 (e.g., a maximum inrush current of 10.9 A) flows through the heater 15, but this is smaller than the first inrush current A1 (e.g., a maximum inrush current of 14.8 A) of the heater 15 during the first heating process.

[0051] On the other hand, the rotation speed R4 of the regeneration fan 13 becomes smaller than the rotation speed R2 during normal operation, and at the same time the rotation speed R3 of the dehumidifying rotor 11 becomes larger than the rotation speed R1 during normal operation, so that the heat of the heater 15 is less likely to be trapped in the dehumidifying rotor 11, and discoloration or deformation of the dehumidifying rotor 11 due to the trapped heat of the heater 15 can be suppressed.

[0052] If the first rotation control unit 31 does not control the rotation of the first motor 12 and the second rotation control unit 32 does not control the rotation of the second motor 14 at the same time that the heating control unit 34 executes the second heating process, the second inrush current A2 of the heater 15 during the second heating process (for example, a maximum inrush current of 15.2 A) will be larger than the first inrush current A1 of the heater 15 during the first heating process (for example, a maximum inrush current of 14.8 A), as shown in Fig. 6. In other words, the inrush current of the heater 15 will not be suppressed.

[0053] After a predetermined time (e.g., 10 seconds) has elapsed since the heating control unit 34 performed the second heating process, the first rotation control unit 31 controls the rotation of the first motor 12 so that the rotation speed R3 of the dehumidifying rotor 11 becomes the rotation speed R1 during normal operation (slower than the rotation speed during the second heating process of the heating control unit 34, S5). Similarly, the second rotation control unit 32 controls the rotation of the second motor 14 so that the rotation speed R4 of the regeneration fan 13 becomes the rotation speed R2 during normal operation (faster than the rotation speed during the second heating process of the heating control unit 34, S6).

[0054] As described above, according to this embodiment, the inrush current of the heater 15 can be suppressed while the dehumidifying efficiency of the dehumidifying rotor 11 can be improved.

[0055] Suppressing the inrush current of the heater 15 allows the heater 15 with a high output to be heated in a short time. That is, in the embodiment of the present invention, when the heating control unit 34 executes the first heating process, it starts heating the heaters 15 of two heater units (the first heater unit 15A and the second heater unit 15B) out of the three heater units (the first heater unit 15A, the second heater unit 15B, and the third heater unit 15C), so that each heater 15 can be heated more quickly than when the three heater units are heated one by one.

[0056] By suppressing the inrush current of the heater 15, the first relay 35 and the second relay 36 for controlling the heater 15 can be configured using less expensive relays.

[0057] Furthermore, in this embodiment, since the rotation speed of the regeneration fan 13 is controlled in accordance with the turning on of the heater 15, there is no need to provide a current detection circuit for detecting the inrush current of the heater 15.

[0058] Furthermore, in this embodiment, when power is supplied to the heater 15, if the rotation speed of the regeneration fan 13 is reduced, the rotation speed of the dehumidifying rotor 11 is increased, making it difficult for the heat of the heater 15 to be trapped in the dehumidifying rotor 11, and preventing the dehumidifying rotor 11 from discoloring or deforming due to the trapped heat of the heater 15.

[0059] In the humidity control device 10, when the humidity of the air K to be dehumidified taken in through the suction port 21 of the casing 20 is low, the first rotation control unit 31 reduces the rotation speed of the dehumidifying rotor 11 by slowing the rotation speed of the first motor 12 below that of the dehumidifying rotor 11 during normal operation. At the same time, the second rotation control unit 32 increases the rotation speed of the second motor 14 above that of the regenerative fan 13 during normal operation. In other words, when the first rotation control unit 31 slows the rotation speed of the first motor 12 below that of the dehumidifying rotor 11 during normal operation, the second rotation control unit 32 increases the rotation speed of the second motor 14 above that of the regenerative fan 13 during normal operation. In this way, by the second rotation control unit 32 controlling the second motor 14, the dehumidification rotor 11 is rotated at a low speed, causing a large amount of the air K to be dehumidified to be taken in by the dehumidification rotor 11, thereby efficiently dehumidifying the air K to be dehumidified, while preventing the heat from the heater 15 from accumulating excessively near the dehumidification rotor 11.

[0060] The embodiments of the present invention have been described above with reference to the drawings. However, the present invention is not limited to the above embodiments and can be embodied in various forms without departing from the spirit and scope of the present invention. The drawings mainly show each component in a schematic manner for ease of understanding, and the thickness, length, number, spacing, etc. of each component shown in the drawings may differ from the actual ones due to the convenience of creating the drawings. Furthermore, the materials, shapes, dimensions, etc. of each component shown in the above embodiments are merely examples and are not particularly limited, and various modifications are possible within a scope that does not substantially deviate from the configuration of the present invention. [Industrial Applicability]

[0061] The present invention can improve dehumidification efficiency while suppressing inrush current in the heating section, and therefore has great industrial applicability. [Explanation of symbols]

[0062] 10 Humidity control device 11 Dehumidifying rotor 12 First motor (first rotating part) 13 Play Fan 14 Second motor (second rotating part) 15 Heater (heating part) 15A 1st heater unit (heating section row) 15B Second heater unit (heating section row) 15C 3rd heater unit (heating section row) 31 First rotation control section 32 Second rotation control section 34 Heating control section

Claims

1. a first rotating portion that rotates the dehumidifying rotor; a plurality of heating units for heating the dehumidifying rotor; a first rotation control unit that controls the first rotation unit; a heating control unit that controls the plurality of heating units; Equipped with When power is supplied to the heating unit, the heating control unit executes a first heating process and a second heating process; the first heating process indicates a process of supplying power to two or more heating units, the number of which is less than the number of the plurality of heating units, among the plurality of heating units; the second heating process is performed after the first heating process, and is a process in which the number of the heating units is smaller than that of the first heating process, and power is supplied to the heating units other than the heating units to which power was supplied in the first heating process; The dehumidifier, wherein the first rotation control unit causes the first rotating unit to rotate faster than the dehumidifying rotor during normal operation when the heating control unit performs the second heating process.

2. a second rotating unit that rotates a regeneration fan that sends air to the heating unit; a second rotation control unit that controls the second rotation unit; Furthermore, The dehumidifier according to claim 1 , wherein the second rotation control unit slows down the rotation of the second rotating unit when the heating control unit executes the second heating process compared to the rotation during normal operation of the regenerative fan.

3. 3. The dehumidifier according to claim 2, wherein the second rotation control unit causes the second rotating unit to rotate faster than the regenerative fan during normal operation when the first rotation control unit causes the first rotating unit to rotate slower than the dehumidifying rotor during normal operation.

4. The dehumidifier according to claim 1 , wherein the plurality of heating sections are arranged in series.

5. The dehumidifier according to claim 1 , wherein the heating section is a positive temperature coefficient heater.

6. A first rotating part that rotates the dehumidifying rotor; a plurality of heating units for heating the dehumidifying rotor; a first rotation control unit that controls the first rotation unit; a heating control unit that controls the plurality of heating units; a second rotating unit that rotates a regeneration fan that sends air to the heating unit; a second rotation control unit that controls the second rotation unit; Equipped with When power is supplied to the heating unit, the heating control unit executes a first heating process and a second heating process; the first heating process indicates a process of supplying power to two or more heating units, the number of which is less than the number of the plurality of heating units, among the plurality of heating units; the second heating process is performed after the first heating process, and is a process in which the number of the heating units is smaller than that of the first heating process, and power is supplied to the heating units other than the heating units to which power was supplied in the first heating process; The second rotation control unit, when the heating control unit executes the second heating process, slows down the rotation of the second rotating unit compared to the rotation during normal operation of the regeneration fan.

Images