NZ728440B2

NZ728440B2 - Dehumidifier

Info

Publication number: NZ728440B2
Application number: NZ728440A
Authority: NZ
Inventors: Satoshi Arai; Noriyoshi Kabeta; Hiroshi Nakamura; Hideo Shibata
Original assignee: Mitsubishi Electric Corporation; Mitsubishi Electric Home Appliance Co Ltd
Priority date: 2014-10-03
Filing date: 2015-09-18
Publication date: 2021-06-29

Abstract

Provided is a dehumidifier with which it is possible to perform a dehumidifying operation appropriate to the amount of the dehumidification load. Inasmuch, the dehumidifier is provided with: a dehumidifying means (6) for condensing out airborne moisture using an evaporator, the dehumidifying means having a refrigerant circuit that includes a compressor (12) for compressing a refrigerant, a condenser (13) for cooling the refrigerant compressed by the compressor (12), a pressure-reducing device (14) for reducing the pressure of the refrigerant cooled by the condenser (13), and an evaporator (15) for causing heat to be absorbed by the refrigerant reduced in pressure by the pressure-reducing device (14); a water-storage tank (7) for recovering moisture removed by the dehumidifying means (6); an air-blowing means (9) for taking in indoor air and blowing out dry air into the indoor area after the air is passed through the evaporator (15); and a control means (10) for controlling the dehumidifying means (6) and the air-blowing means (9). The control means (10) is configured to perform control for varying the rotation speed of the compressor (12) according to the degree of dryness of clothes. aving a refrigerant circuit that includes a compressor (12) for compressing a refrigerant, a condenser (13) for cooling the refrigerant compressed by the compressor (12), a pressure-reducing device (14) for reducing the pressure of the refrigerant cooled by the condenser (13), and an evaporator (15) for causing heat to be absorbed by the refrigerant reduced in pressure by the pressure-reducing device (14); a water-storage tank (7) for recovering moisture removed by the dehumidifying means (6); an air-blowing means (9) for taking in indoor air and blowing out dry air into the indoor area after the air is passed through the evaporator (15); and a control means (10) for controlling the dehumidifying means (6) and the air-blowing means (9). The control means (10) is configured to perform control for varying the rotation speed of the compressor (12) according to the degree of dryness of clothes.

Description

Description Title DEHUMIDIFIER Field The present invention relates to a dehumidifier that dehumidifies air in a room.

Background Conventionally, there is a dehumidifier that allows a user to set any desired humidity value, and is capable of performing dehumidification to a set humidity.

Such a dehumidifier stops an operation of a compressor and drives only an air blower when a humidity of a room falls below the set humidity value. If the humidity of the room exceeds the set humidity after the operation of the compressor is d, the operation of the compressor is restarted to dehumidify the room (for example, see PTL on List Patent Literature [0003a] [PTL 1] JP 99 A [0003b] In this specification where reference has been made to patent specifications, other external documents, or other sources of information, this is lly for the purpose of providing a context for discussing the features of the invention. Unless specifically stated otherwise, reference to such external documents is not to be construed as an admission that such documents, or such sources of information, in any jurisdiction, are prior art, or form part of the common general knowledge in the art.

Summary Technical Problem However, with the conventional configuration, a rotation speed of the compressor cannot be changed, and thus a dification capability cannot be significantly changed, which makes it difficult to perform a proper dehumidification operation according to an amount of a dehumidification load in clothes drying or the like.

The t invention is achieved to solve the above-described problem, and has an object to provide a dehumidifier capable of ming a proper dehumidification operation according to an amount of a dehumidification load. An onal or ative object of the present invention is to provide the public with a useful choice. on to Problem [0006a] A dehumidifier according to the present invention includes: dehumidification means including a refrigerant circuit including a compressor configured to compress a refrigerant, a condenser ured to cool the refrigerant compressed by the compressor, a decompression device configured to decompress the erant cooled by the condenser, and an evaporator ured to perform absorption of heat into the refrigerant decompressed by the decompression device, the dehumidification means causing moisture contained in air to be condensed by the evaporator and removed; a water storage tank configured to collect the moisture removed by the dehumidification means; air blowing means configured to suck air in a room and blow out dry air obtained after causing the air to pass through the evaporator in the room; and control means configured to control the dehumidification means and the air blowing means, wherein the control means performs a clothes drying operation for control to change a rotation speed of the ssor according to a dryness of clothes and is configured to perform a lownoise clothes drying mode where the rotation speed of the compressor set in the s drying operation is generally further reduced.

Reference may be made in the ption to subject matter which is not in the scope of the appended claims. That subject matter should be readily identifiable by a person skilled in the art and may assist putting into practice the invention as defined in the ed claims.

Advantageous Effects of Invention According to the present invention, a dehumidifier can be provided capable of performing a proper dehumidification operation according to an amount of clothes to be dried as a dehumidification load.

Brief Description of the Drawings Fig. 1 is a vertical sectional view of an internal uration of a dehumidifier according to Embodiment 1 of the present invention.

Fig. 2 is a schematic configuration diagram of an interior of the dehumidifier according to Embodiment 1 of the present invention.

Fig. 3 is a tic configuration diagram of an exterior of the dehumidification means of Embodiment 1 of the present invention.

Fig. 4 is a schematic configuration diagram of a refrigerant circuit that constitutes the dehumidification means according to Embodiment 1 of the present invention.

Fig. 5 is a table showing an example of rotation speeds of the ssor and the fan corresponding to time elapsed from the start of the operation, ing to Embodiment 1 of the present invention.

Fig. 6 is a table showing an example of the rotation speeds of the compressor and the fan corresponding to the detected humidity, according to Embodiment 2 of the present invention.

Fig. 7 is a table showing an example of the on speeds of the compressor and the fan corresponding to a dryness of the s obtained from detected values of the infrared sensor according to Embodiment 3 of the present invention.

Fig. 8 is a m showing an example of the rotation speeds of the compressor and the fan at each rank applicable to Embodiments 1 to 3 of the present invention.

Description of Embodiments Now, with nce to the drawings, embodiments of the present ion will be described. In the drawings, the same or corresponding parts are denoted by the same reference numerals, and overlapping descriptions are simplified or omitted as appropriate.

Embodiment 1 Fig. 1 is a vertical sectional view of an internal configuration of a dehumidifier according to Embodiment 1. Fig. 2 is a schematic configuration diagram of an interior of the dehumidifier according to Embodiment 1.

As shown in Figs. 1 and 2, an exterior of the dehumidifier according to this embodiment includes a self-supportable dehumidifier housing 1, an inlet 2 for taking indoor air A into the dehumidifier housing 1, and an outlet 3 for discharging dry air B from which moisture is removed out of the dehumidifier housing 1 into a room.

As shown in Fig. 2, the dehumidifier according to this embodiment includes a humidity sensor 4 as humidity ing means for detecting a humidity of the indoor air A sucked from the inlet 2, and a temperature sensor 5 as temperature detecting means for ing a temperature of the indoor air A.

In the description below, the humidity and the temperature detected by the humidity sensor 4 and the ature sensor 5 are referred to as ted humidity" and "detected ature", respectively.

The dehumidifier according to this embodiment also es dehumidification means 6 for removing moisture contained in the indoor air A to produce the dry air B, and a water storage tank 7 that stores the moisture removed from the indoor air A by the dification means 6. Specifically, the dehumidifier holds the dehumidification means 6 and the water storage tank 7 in the dehumidifier housing 1, which are integrally movable. A detailed uration of the dehumidification means 6 will be described later.

The water e tank 7 is provided with a water level sensor 8 as water amount detecting means for detecting an amount of water in the water storage tank 7. In the description below, the amount of water detected by the water level sensor 8 is referred to as "detected amount of water".

Control means 10 monitors the water level sensor 8 so as to prevent the water storage tank 7 from overflowing with water.

In the dehumidifier housing 1, an air blowing fan 9 as air blowing means is provided.

The air g fan 9 sucks and introduces the indoor air A from the inlet 2 into the dehumidification means 6, and tes an w for discharging the dry air B having passed through the dehumidification means 6 out of the outlet 3.

The dehumidifier according to this embodiment includes the control means 10 and an operation portion 11. The operation portion 11 is used by a user to operate the dehumidifier and input information such as a choice of a dehumidification mode or an input of a set humidity.

The control means 10 controls operations of the dehumidification means 6 and the air blowing fan 9 based on detected values of the various sensors described above, the information input from the operation n 11, and a timer that measures an operation time.

Next, the dehumidification means 6 included in the dehumidifier according to this ment will be described. Fig. 3 is a schematic configuration diagram of an exterior of the dehumidification means according to Embodiment 1.

As shown in Fig. 3, the dehumidification means 6 includes a ssor 12 that compresses a refrigerant, a condenser 13 that cools the refrigerant increased in pressure by the compressor 12, a capillary tube 14 as a decompression device that decompresses and expands the refrigerant cooled by the condenser 13, and an evaporator 15 that performs absorption of heat into the refrigerant ressed and expanded by the capillary tube 14.

Fig. 4 is a schematic configuration diagram of a refrigerant circuit that constitutes the dehumidification means according to Embodiment 1.

As shown in Fig. 4, the compressor 12, the condenser 13, the capillary tube 14, and the ator 15 described above are sequentially connected by pipes to constitute a refrigerant circuit.

The l means 10 performs a dehumidification operation when detecting that a dehumidification mode is selected by a switch operation of the operation portion 11 and that an operation start switch is operated.

In the dehumidification operation, specifically, the air blowing fan 9 is rotated and the dehumidification means 6 is driven so that the detected humidity detected by the ty sensor 4 is the set humidity input from the operation portion. When the air blowing fan 9 is driven, the indoor air A is taken from the inlet 2 into the dehumidification means 6 in the dehumidifier housing 1.

In the dehumidification means 6, the ssor 12 is driven and thus the refrigerant is circulated in the refrigerant circuit. Moisture of air contained in the indoor air A is condensed while passing through the evaporator 15. The air having passed through the dehumidification means 6 is dehumidified into the dry air B, which is blown out of the outlet 3 into the room.

Also, as shown in Fig. 4, the control means 10 includes an inverter t 16. The inverter circuit 16 is a circuit for converting a DC voltage converted by a converter circuit (not shown) into an AC voltage of any e, ncy, and phase.

The control means 10 controls the inverter circuit 16 based on inputs from the humidity sensor 4, the temperature sensor 5, the water level sensor 8, or the like, and variably controls a frequency of an AC voltage supplied to the compressor 12 and the air blowing fan 9. More specifically, the control means 10 controls the inverter circuit 16 so that a compressor frequency (Hz) supplied to the compressor 12 is a requested frequency.

Thus, the compressor 12 is controlled to a ssor rotation speed (rpm) per unit time according to the supplied compressor ncy (Hz). Also, the control means 10 controls the inverter circuit 16 so that a fan rotation speed (rpm) of the air blowing fan 9 per unit time is a requested rotation speed.

Here, an output of the compressor 12 increases with increasing rotation speed per unit time. Also, an output of the air blowing fan 9 ses with sing rotation speed per unit time.

Next, with reference to Fig. 5, a characteristic operation of the dehumidifier according to Embodiment 1 will be bed.

The dehumidifier configured as described above includes a first clothes drying mode that is an operation mode for drying laundry. In the clothes drying mode, the control means controls the compressor 12 and the air blowing fan 9 based on a timer 10a that measures time from a start of the operation, and a detected humidity at which a humidity sensor as drying load detecting means detects r or not the laundry as a drying load has been dried.

Fig. 5 is a table showing an example of rotation speeds of the compressor and the fan corresponding to time elapsed from the start of the operation.

The control means 10 previously stores three grades of operation states of the compressor 12 and the air blowing fan 9. Referring to Fig. 5, at rank 3, the rotation speed of the ssor is 4800 (rpm) and the on speed of the air blowing fan is 980 (rpm), at rank 2, the rotation speed of the compressor is 4200 (rpm) and the rotation speed of the air blowing fan is 950 (rpm), and at rank 1, the rotation speed of the compressor is 3600 (rpm) and the rotation speed of the air blowing fan is 900 (rpm).

The control means 10 storing such operation states performs the first clothes drying mode as described below.

First, at the start of the operation, the control means 10 operates to control each component so that the rank 3 is set with the highest rotation speeds of the compressor 12 and the air blowing fan 9. This is for drying clothes as fast as possible by increasing outputs of the compressor 12 and the air blowing fan 9 because the clothes are wettest immediately after the start of the clothes drying mode.

Then, after a lapse of one hour from the start of the operation of the first clothes drying mode, the control means 10 operates to control each component so that the rank 2 is set where the rotation speeds of the compressor 12 and the air blowing fan 9 are lower than those at the rank 3 with the t rotation speeds.

This is for efficiently operating the compressor 12 and the air blowing fan 9 correspondingly to the state of the clothes e a n time (one hour in this embodiment) has elapsed from the start of the first clothes drying mode and the clothes have been partially dried.

Then, after a r lapse of three hours from the start of the operation of the first clothes drying mode, the control means 10 operates to control each component so that the rank 1 is set where the rotation speeds of the compressor 12 and the air blowing fan 9 are lower than those at the rank 2.

This is for efficiently ing the compressor 12 and the air blowing fan 9 correspondingly to the state of the clothes because time has elapsed from when the ion state of the compressor 12 and the air blowing fan 9 is set to the rank 2 and the clothes have been r dried as compared to the clothes at the rank 2.

As described above, since the clothes to be dried are dried and a dryness of the clothes changes with time from the start of the operation, the control means 10 estimates the dryness based on the time elapsed from the start of the operation, and performs control to reduce the outputs of the compressor 12 and the air blowing fan 9.

This can quickly facilitate drying in the state where the clothes are wettest ately after the operation, and allows an efficient progress of drying for the ion of the compressor and the air blowing fan in the state where the clothes are partially dried.

When the drying of the clothes has been finished, the operation is performed such as at the rank 1 where the rotation speeds of the compressor 12 and the air blowing fan 9 are lowest, thereby preventing the dried clothes from absorbing moisture while ng power consumption of the ssor 12 and the air blowing fan 9.

The operation of the first clothes drying mode as described above may be stopped, for e, when a certain time has d from the start of the operation (for example, the operation is stopped when five hours has elapsed), when a predetermined humidity or lower is d, or after an operation for a predetermined time from when the predetermined humidity or lower is reached.

Embodiment 2 Next, with reference to Fig. 6, a second clothes drying mode that is a characteristic operation of the dehumidifier according to ment 2 will be described. The second clothes drying mode described in this embodiment is for controlling the rotation speeds of the compressor 12 and the air blowing fan 9 based on the detected humidity detected by the humidity sensor 4.

Fig. 6 is a table showing an example of the on speeds of the compressor and the fan corresponding to the detected humidity.

The control means 10 previously stores three grades of operation states of the ssor 12 and the air blowing fan 9.

Referring to Fig. 6, rank 3 shows the on speeds of the compressor and the air blowing fan at the detected humidity of 70%, and the rotation speed of the compressor is 4800 (rpm) and the rotation speed of the air blowing fan is 980 (rpm). Rank 2 shows the rotation speeds of the compressor and the air blowing fan at the detected humidity of 60%, and the rotation speed of the compressor is 4200 (rpm) and the rotation speed of the air blowing fan is 950 (rpm). Rank 1 shows the rotation speeds of the compressor and the air blowing fan at the detected humidity of 50%, and the rotation speed of the compressor is 3600 (rpm) and the rotation speed of the air blowing fan is 900 (rpm).

The control means 10 storing such operation states performs the second clothes drying mode as described below.

First, at the start of the operation, the l means 10 operates to control each component so that the rank 3 is set with the t rotation speeds of the compressor 12 and the air blowing fan 9. This is for drying clothes as fast as possible by increasing outputs of the compressor 12 and the air g fan 9 because it can be estimated from the detected humidity that the clothes are wettest.

Then, when the detected humidity reaches 60% or lower after the start of the second clothes drying mode, the control means 10 operates to control each component so that the rank 2 is set where the rotation speeds of the compressor 12 and the air blowing fan 9 are lower than those at the rank 3 with the highest rotation speeds.

This is for operating the compressor 12 and the air g fan 9 so as to efficiently dry the clothes correspondingly to the state of the clothes because a certain time has elapsed from the start of the second clothes drying mode and it can be estimated that the clothes have been partially dried.

Then, when the detected humidity reaches 50% or lower after the start of the second s drying mode, the control means 10 operates to control each ent so that the rank 1 is set where the rotation speeds of the compressor 12 and the air blowing fan 9 are lower than those at the rank 2.

This is for efficiently operating the compressor 12 and the air blowing fan 9 pondingly to the state of the clothes e after the operation state of the compressor 12 and the air blowing fan 9 is set to the rank 2, the clothes have been further dried as compared to the s at the rank 2.

As described above, the control means 10 estimates the dryness of the clothes from the detected humidity, and performs control to reduce the outputs of the compressor 12 and the air blowing fan 9.

This can quickly facilitate drying in the state where the clothes are wettest immediately after the operation, and allows an efficient progress of drying for the operation of the compressor and the air blowing fan in the state where the clothes are partially dried.

When the drying of the clothes has been finished, the ion is performed such as at the rank 1 where the rotation speeds of the compressor 12 and the air blowing fan 9 are lowest, thereby preventing the dried clothes from absorbing moisture while reducing power consumption of the compressor 12 and the air g fan 9.

The operation of the second clothes drying mode as described above may be stopped, for example, when a certain time has elapsed from the start of the operation (for example, the operation is stopped when five hours has elapsed), when a predetermined humidity or lower is reached, or after an operation for a predetermined time from when the predetermined humidity or lower is reached.

Embodiment 3 Next, with reference to Fig. 7, a third clothes drying mode that is a characteristic operation of the dehumidifier ing to Embodiment 3 will be described. The third clothes drying mode described in this embodiment is for controlling the on speeds of the compressor 12 and the air blowing fan 9 based on a surface temperature of the s detected by an infrared sensor 20.

Fig. 7 is a table showing an example of the rotation speeds of the compressor and the fan corresponding to a dryness of the clothes obtained from detected values of the infrared sensor 20.

The control means 10 previously stores three grades of operation states of the compressor 12 and the air blowing fan 9 according to a dryness of clothes.

Referring to Fig. 7, rank 3 shows the rotation speeds of the compressor and the air g fan at a low s with the s in the least dried state, and the rotation speed of the compressor is 4800 (rpm) and the rotation speed of the air blowing fan is 980 (rpm).

Rank 2 shows the rotation speeds of the compressor and the air blowing fan at a middle s with the clothes in a more dried state than at the rank 3, and the rotation speed of the compressor is 4200 (rpm) and the rotation speed of the air blowing fan is 950 (rpm).

Rank 1 shows the rotation speeds of the ssor and the air blowing fan at a high dryness with the clothes in a much more dried state than at the rank 2, and the on speed of the compressor is 3600 (rpm) and the on speed of the air blowing fan is 900 (rpm).

Here, the control means 10 determines the dryness from the surface temperature of the clothes detected by the infrared sensor 20 and the detected temperature of the indoor air detected by the temperature sensor 5 as described below.

Low dryness: a state where a difference between the temperature of the indoor air and the surface temperature of the clothes is larger than a predetermined value, or an area with a large ature difference is larger than a predetermined size.

Middle dryness: a state where after the start of the operation, the difference between the temperature of the indoor air and the surface temperature of the clothes decreases, or the area with a large temperature difference decreases by a predetermined amount as compared to those at the low dryness.

High dryness: a state where after the start of the ion, the difference between the temperature of the indoor air and the surface temperature of the clothes decreases, or the area with a large temperature difference decreases by a ermined amount as compared to those at the middle dryness.

The control means 10 storing such operation states performs the third clothes drying mode as described below.

First, in the state of the "low dryness", the control means 10 operates to control each component so that the rank 3 is set with the highest rotation speeds of the compressor 12 and the air blowing fan 9. This is for drying the clothes as fast as possible by increasing outputs of the compressor 12 and the air blowing fan 9 because it can be estimated from the detected humidity that the clothes are wettest.

Then, when the "middle dryness" is reached after the start of the third clothes drying mode, the control means 10 operates to l each component so that the rank 2 is set where the rotation speeds of the compressor 12 and the air blowing fan 9 are lower than those at the rank 3 with the highest rotation speeds.

This is for operating the compressor 12 and the air blowing fan 9 so as to efficiently dry the clothes correspondingly to the state of the s because a certain time has elapsed from the start of the third clothes drying mode and it can be ted that the clothes have been partially dried.

Then, when the "highest s" is d after the start of the third clothes drying mode, the control means 10 operates to control each component so that the rank 1 is set where the rotation speeds of the compressor 12 and the air blowing fan 9 are lower than those at the rank 2.

This is for efficiently operating the compressor 12 and the air blowing fan 9 correspondingly to the state of the clothes because after the operation state of the compressor 12 and the air blowing fan 9 is set to the rank 2, the clothes have been further dried as compared to the s at the rank 2.

As described above, the control means 10 estimates the dryness of the clothes from detected results of the infrared sensor 20, and performs control to reduce the outputs of the compressor 12 and the air blowing fan 9.

When the drying of the clothes has been finished, the operation is med such as at the rank 1 where the rotation speeds of the compressor 12 and the air blowing fan 9 are lowest, thereby preventing the dried s from absorbing moisture while reducing power consumption of the compressor 12 and the air blowing fan 9.

The operation of the second clothes drying mode as described above may be stopped, for e, when a certain time has elapsed from the start of the operation (for example, the operation is stopped when five hours has elapsed), when a predetermined humidity or lower is reached, or after an operation for a predetermined time from when the ermined humidity or lower is d.

In Embodiments 1 to 3 above, as shown in Fig. 8, a ise clothes drying mode may be provided where the rotation speeds of the compressor 12 and the air g fan at each rank set in each clothes drying mode are generally further reduced.

In the low-noise clothes drying mode, outputs of the compressor and the air blowing fan are low, which increases an operation time. However, the low rotation speeds of the compressor 12 and the air g fan 9 can reduce ion noise and thus reduce operation noise of the entire dehumidifier as compared to each clothes drying mode.

This allows the operation of the clothes drying modes described above even when a quiet operation is desired such as during the night.

Also, in Embodiments 1 to 3 above, when a detected amount of water of the water level sensor 8 of the water storage tank 7 is a full water level, the control means 10 may stop the operation of the compressor 12 even if the s have not been dried. This prevents the water storage tank 7 from overflowing with water.

The ion of the air blowing fan 9 may be continued even after the operation of the compressor 12 is stopped. This allows circulation of air in a space where the dehumidifier is used.

Further, in Embodiments 1 to 3 above, the control means 10 may gradually reduce the output of the ssor 12 as the detected amount of water of the water level sensor 8 of the water e tank 7 approaches the full water level of the water storage tank 7.

This allows extension of timing when the water storage tank 7 is full of water, and allows a more continuous dehumidification operation.

In the embodiments above, the three ranks of the rotation speeds of the compressor 12 and the air blowing fan 9 are provided, but more ranks may be provided for more detailed control.

The term "comprising" as used in this ication and claims means "consisting at least in part of". When interpreting statements in this specification and claims which e the term "comprising", other features s the features prefaced by this term in each statement can also be present. Related terms such as "comprise" and "comprised" are to be interpreted in a similar manner.

Industrial Applicability The present invention may be used, for example, for a dehumidifier that dehumidifies air in a room for drying clothes in the room.

Reference Signs List 1 Dehumidifier g, 2 Inlet, 3 Outlet, 4 Humidity sensor, 5 Temperature sensor, 6 Dehumidification means, 7 Water storage tank, 8 Water level sensor, 9 Air blowing fan, Control means, 11 ion portion, 12 Compressor, 13 Condenser, 14 Capillary tube, 15 Evaporator, 16 Inverter circuit, 20 Infrared sensor

Claims

[Claim 1] A dehumidifier comprising: dehumidification means including a erant t including a compressor configured to compress a erant, a condenser configured to cool the refrigerant compressed by the compressor, a decompression device configured to decompress the refrigerant cooled by the condenser, and an evaporator configured to perform absorption of heat into the refrigerant decompressed by the decompression device, the dehumidification means causing moisture contained in air to be condensed by the evaporator and removed; a water storage tank configured to collect the moisture removed by the dehumidification means; air blowing means configured to suck air in a room and blow out dry air obtained after causing the air to pass through the evaporator in the room; and control means configured to control the dehumidification means and the air blowing means, n the control means performs a clothes drying operation for control to change a rotation speed of the ssor according to a dryness of clothes and is ured to perform a low-noise clothes drying mode where the on speed of the compressor set in the clothes drying ion is generally further reduced.
[Claim 2] The dehumidifier according to claim 1, comprising an inverter circuit configured to change a frequency of an AC voltage supplied to the compressor, wherein the control means controls the inverter circuit to change the on speed of the compressor.
[Claim 3] The dehumidifier according to claim 1 or 2, wherein the control means performs control to reduce the rotation speed of the compressor after a lapse of a predetermined time from a start of the clothes drying operation.
[Claim 4] The dehumidifier according to claim 1 or 2, comprising humidity detecting means configured to detect a humidity of indoor air, wherein the control means performs control to reduce the rotation speed of the compressor when the humidity detected by the ty detecting means is a predetermined value or lower.
[Claim 5] The difier according to claim 1 or 2, comprising: temperature detecting means ured to detect a temperature of indoor air; and infrared ing means configured to detect a surface temperature of the clothes, wherein the control means performs control to reduce the rotation speed of the ssor when a difference between the surface temperature of the clothes detected by the infrared detecting means and the temperature of the indoor air detected by the temperature detecting means decreases.
[Claim 6] The dehumidifier according to any one of claims 1 to 5, wherein the control means performs, in the clothes drying operation, first control with a highest rotation speed of the compressor, second l with a rotation speed lower than that of the first control, and third control with a rotation speed lower than that of the second control.
[Claim 7] The dehumidifier according to any one of claims 1 to 6, wherein the control means stops an operation of the dehumidifier when an amount of water stored in the water storage tank reaches a full water level.
[Claim 8] The dehumidifier according to any one of claims 1 to 6, wherein the control means reduces the rotation speed of the compressor as an amount of water stored in the water storage tank approaches a full water level.
[Claim 9] The difier according to claim 1, substantially as herein described with nce to any embodiment disclosed.