JP2008207108A - Dehumidifier - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a dehumidifier which is capable of blowing off not only cold air or its mixed air but warm air from the blowoff outlet, speeds up the drying of laundry and improves the finish of laundry. <P>SOLUTION: The dehumidifier has a blower 19 for the first air passage guiding cold air having passed through an evaporator 15 to the first air passage, a blower 20 for the second passage guiding warm air having passed through a condenser 16 to the second passage, two or more blowoff outlets 8 and 11 arranged, respectively, in the first and second air passages, a damper mechanism 26 capable of selecting a blowoff outlet between the outlets for the first and second air passages and a controlling mechanism 100 controlling the damper mechanism 26. The controlling mechanism 100 selects a specified blowoff outlet 8 as the blowoff outlet for the first and second air passages at the start of operation and selects a specified outlet 8 as the blowoff outlet for the second air passage and the other blowoff outlet 11 as the blowoff outlet for the first air passage when the humidity lowers down to a preliminarily set humidity. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a dehumidifier, and more particularly to a dehumidifier having a drying function.

A conventional dehumidifier is provided with a suction port for taking in air at a predetermined position of the casing and an outlet for blowing out air, and an evaporator, a condenser, a blower, and the like are arranged in the casing. . The air taken into the casing from the suction port is cooled by the evaporator, and the air taken into the casing from the suction port is made hot by the condenser, so that only the cool air is blown out from the outlet. Then, a dry operation in which both cold air and hot air are blown out from the air outlet is performed (see, for example, Patent Document 1).
Japanese Patent Laying-Open No. 2005-239647 (5th page, FIG. 3)

  Conventional dehumidifiers perform cool operation in which only cool air is blown out from the air outlet, and dry operation in which mixed air of both cold air and hot air is blown out from the air outlet. However, there is a problem that it takes time to dry and the clothes drying operation using only warm air cannot be performed.

  The present invention has been made to solve such problems, and can blow out not only cold air or cold air and mixed air but also warm air from the air outlet, thereby speeding up drying of the laundry and washing the laundry. The purpose is to obtain a dehumidifier with a good finish.

  A dehumidifier according to the present invention includes a refrigeration cycle having at least an evaporator and a condenser, a first blower that guides cold air that has passed through the evaporator to a first air path, and hot air that has passed through the condenser. A second blower leading to a second air passage, a plurality of air outlets provided corresponding to the first air passage and the second air passage, and the first air passage and the second air passage. A damper mechanism capable of selecting an outlet, humidity detecting means for detecting humidity, and control means for controlling the operation of the dehumidifier by determining an operation control method based on an output of a detection signal of the humidity detector. In the dehumidifier, the control means controls the damper mechanism so as to select a predetermined outlet as an outlet for the first air path and the second air path at the start of operation, and detects the humidity When the humidity detected by the means is reduced to a preset set humidity, Selecting said predetermined air outlet as outlet for 2 to the wind passage, in which so as to control the damper mechanism to select the other of the air outlet as outlet of the first air duct.

  According to the dehumidifier of the present invention, at the start of operation, the damper mechanism is controlled to select a predetermined outlet as the outlet for the first air path and the second air path, and the humidity detecting means detects When the set humidity decreases to a preset set humidity, a predetermined outlet is selected as the outlet for the second air passage, and another outlet is selected as the outlet of the first air passage. Since the damper mechanism is controlled, not only cold air, cold air and mixed air but also warm air can be blown out from the outlet, which speeds up laundry drying and improves the finish of the laundry. it can.

  1 is a functional block diagram showing an outline of a dehumidifier according to Embodiment 1 of the present invention. The dehumidifier 1 includes a control unit 100 and a refrigeration cycle 110, and the refrigeration cycle 110 includes an evaporator 15 and a condenser 16 (details will be described later with reference to FIG. 3). Further, the dehumidifier 1 includes a first air passage blower 19, a second air passage blower 20, and a damper mechanism 26. The first air passage blower 19 is for guiding the first air (cold air) that has passed through the evaporator 15 of the refrigeration cycle 110 to the outlet, and the second air passage blower 20 is the condenser of the refrigeration cycle 110. The second air (warm air) that has passed through 16 is directed to the air outlet. The damper mechanism 26 is for selecting the outlet of the first air path or the second air path (details of these mechanisms will be described later). The operations of the refrigeration cycle 110, the first air path blower 19, the second air path blower 20, and the damper mechanism 26 are controlled by the control unit 100, respectively. Further, the dehumidifier 1 includes an operation device 31 for a user to input operation information, a display device 32 for transmitting the operating state of the dehumidifier to the user, a humidity detection means 33 for measuring indoor humidity, and Room temperature detecting means 34 for detecting the room temperature is provided. The operation device 31, the display device 32, the humidity detection unit 33, and the room temperature detection unit 34 are connected to the control unit 100. The first air passage blower 19 and the second air passage blower 20 described above correspond to the first blower and the second blower of the present invention, the control unit 100 corresponds to the control means, and the operation device 31 It corresponds to the operation mode switching means.

  FIG. 2 is an internal block diagram of the control unit 100 of FIG. In the present embodiment, it is assumed that the microcomputer 120 performs the operation of the control unit 100, and a CPU (Central Processing Unit) 123 reads out programs and data stored in a nonvolatile memory (ROM) 121 and performs processing. Further, the CPU 123 takes in the sensor signal and the switch state as information via the input device 124. A random access memory (RAM) 122 is a memory in which the CPU 123 temporarily stores data during calculation. The CPU 123 controls the controlled device via the output device 126 based on the calculation result. The microcomputer 120 realizes the function as the control unit 100 of the dehumidifier by the above operation.

  FIG. 3 is a configuration diagram of the refrigeration cycle 110. As shown in FIG. 3, the refrigeration cycle 110 of the dehumidifier 1 according to the first embodiment configures a refrigerant circuit by sequentially connecting the compressor 17, the condenser 16, the expansion valve 35, and the evaporator 15. A hot gas bypass circuit 36 is connected between the discharge side of the compressor 17 and the inlet side of the evaporator 15, and an electromagnetic valve 37 is provided in the hot gas bypass circuit 36. This refrigerant circuit is provided with a hot gas bypass circuit 36 and an electromagnetic valve 37. When the electromagnetic valve 37 of the hot gas bypass circuit 36 is opened, the discharge gas of the compressor 17 is bypassed to the evaporator 15. This is because the evaporator 15 is heated to defrost the frost adhering to the evaporator 15.

  FIG. 4 is a control block diagram showing details of the control system of the dehumidifier according to Embodiment 1 of the present invention. In the figure, a control power supply generation circuit 50 converts a commercial power supply 51 into a DC power supply and lowers the voltage to generate a drive voltage for the control unit 100. The power zero cross detection circuit 52 detects a point where the power phase of the commercial power source 51 of the dehumidifier becomes zero. The control unit 100 performs phase control of the blower based on this signal and generates time necessary for control. The blower driving means 53 and 54 control the operation of the first air passage blower 19 and the second air passage blower 20 by a control signal from the control unit 100. In the present embodiment, the operation of the fans 19 and 20 is controlled by phase control. When the power supply is zero crossed, the energization of the blowers 19 and 20 is turned off. The time is measured from the power supply zero cross signal and the energization is turned on at a predetermined timing. Faster (stronger), longer (slower). This operation is repeated every half wave of the commercial power source. Further, the link driving motors 29a and 29b are stepping motors that can be finely controlled in the rotation direction, speed, and angle. The damper mechanism 26 is operated using this rotation. These link driving motors 29a and 29b are driven by link motor driving means 55 and 56, respectively. The compressor 17 is driven by compressor driving means 57. The louver motor 10 is driven by louver motor driving means 58. The electromagnetic valve 37 is driven by electromagnetic valve driving means 59. The heating device 21 is driven by the heating device driving means 60. The display device 32 is driven by a display device driving circuit 61 to display various displays. The link motor driving means 55, 56, compressor driving means 57, louver motor driving means 58, electromagnetic valve driving means 59, heating device driving means 60 and display device driving circuit 61 are appropriately controlled by the control unit 100. In addition, as described with reference to FIG. 1, the operation device 31, the humidity detection unit 33, and the room temperature detection unit 34 are connected to the control unit 100. Next, the mechanism of the dehumidifier 1 incorporating each device of FIG. 4 will be described.

  5 is a perspective view of the dehumidifier according to Embodiment 1 of the present invention as viewed from the front, FIG. 6 is a sectional view taken along the line cc ′ of FIG. 5, and FIG. 7 is a perspective view of the dehumidifier as viewed from the back. . In these FIG.5 and FIG.7, the thing of the state which the louver opened is shown. In the dehumidifier 1, a casing 7 is constituted by a front panel 2, a back surface portion 3, a pair of side surface portions 4, an upper surface portion 5, and a bottom surface portion 6. A front side air outlet 8 is formed from the upper surface portion 5 to the front panel 2. A louver 9 that blows out air in a predetermined direction is disposed at the front side air outlet 8. The louver 9 includes a curved louver main body 9a, a plurality of vertical louvers 9b attached to the louver main body 9a at intervals, and a louver base 9c that supports the louver main body 9a and the vertical louver 9b (see FIG. 8 described later). The louver base 9c is pivotally supported on both sides of the front side air outlet 8 in a rotatable manner. The louver 9 is configured such that the louver base 9c is rotated by a louver motor 10 disposed on the side of the front side outlet 8 (see FIG. 8 described later). Accordingly, by fixing or swinging the louver 9 in a predetermined direction, the blowing range can be narrowed or widened. A rear air outlet 11 is formed at the uppermost portion of the back surface portion 3, a first air passage inlet 12 is formed at the upper portion, and a second air passage inlet 13 is formed at the lower portion. A filter frame 14 having an air cleaning filter is detachably attached to the first air passage inlet 12 and the second air passage inlet 13.

  Further, on the upper surface portion 5 of the dehumidifier 1, switches 31 a to 31 f as operation devices 31 for operating the dehumidifier and lamps as the display device 32 are installed. A sensor room outside air communication port 4 a is formed in the side surface portion 4 of the casing 7. As shown in the sectional view of c-c ′ in FIG. 6, humidity detecting means (humidity sensor) 33 and room temperature detecting means (for example, a temperature thermistor) 34 are installed therein. In order to measure the humidity and temperature of the outside air, the sensor chamber 4b is airtight from the inside of the main body, and is configured not to be affected by the temperature and humidity inside the main body. Based on the data of the humidity detection means 33 and the room temperature detection means 34, the control unit 100 controls the damper mechanism 26 and the like.

  8 is a cross-sectional view for explaining the dehumidifying wind operation in which the front side of the dehumidifier of FIG. 5 is vertically cut, FIG. 9 is a cross-sectional view taken along the line AA of FIG. 8, and FIG. 11 is a cross-sectional view for explaining cold air operation in which the front side of the dehumidifier is vertically cut, FIG. 12 is a cross-sectional view taken along line AA in FIG. 11, and FIG. 13 is a cross-sectional view taken along line BB in FIG. Inside the casing 7, as shown in FIGS. 8 to 13, an evaporator 15 for generating cold air is disposed in the upper part on the back surface part 3 side. Below the evaporator 15, a condenser 16 for generating warm air is disposed. A compressor 17 is provided on the lower left side of the casing 7, and a drainage tank 18 for storing water condensed in the evaporator 15 is disposed on the lower center and right side. A float 18 a is provided in the drain tank 18. Further, between the evaporator 15 and the front panel 2, air is sucked from the first air passage inlet 12 to pass through the evaporator 15, and the cold air is passed through the first air passage 22 to the first switching outlet. 23 (refer FIG. 5), the 1st air path blower 19 blown out is arrange | positioned. The first air passage blower 19 includes a motor 19a and a fan 19b. Further, between the condenser 16 and the front panel 2, air is sucked from the second air passage inlet 13 to pass through the condenser 16, and the warm air is passed through the second air passage 24 to the second switching blow. A second air passage blower 20 is disposed to blow out from the outlet 25 (see FIG. 5). The second air passage blower 20 includes a motor 20a and a fan 20b. A heating device 21 composed of a nichrome wire, a sheathed heater, a PTC heater or the like is provided above the condenser 16 and in the vicinity of the front-side outlet 8. Reference numeral 40 denotes a power cord, and reference numeral 41 denotes a caster provided on the bottom surface portion 6.

  FIG. 14 is a perspective view for explaining a rear wind operation in which a part of the dehumidifier 1 as viewed from the front is broken. FIG. 18 is a perspective view showing the configuration of the damper mechanism 26 of the dehumidifier (as viewed from below). is there. In the casing 7, below the front side outlet 8 and the rear side outlet 11, the front side outlet 8 is formed so as to be divided into right and left of the first switching outlet 23 and the second switching outlet 25, Cold air is blown out from the front-side outlet 8 or the rear outlet 11 from the first switching outlet 23, and hot air is blown out from the front-side outlet 8 or rear outlet 11 from the second switching outlet 25. A slide-type damper mechanism 26 that can be selected is provided. This slide type damper mechanism 26 is divided into right and left by a partition member 27a, and a rectangular shutter frame 27 that holds the shutters 28a and 28b slidably in the front-rear direction, and two provided on the partition member 27a. The link drive motors 29a and 29b, and the link members 30a and 30b that connect the shutters 28a and 28b and the link drive motors 29a and 29b, respectively. The size of each shutter 28a, 28b is half of the area divided into right and left by the partition member 27a of the shutter frame 27, and the front side air outlet is formed by sliding each shutter 28a, 28b back and forth. 8 is switched between the front blowing in which the wind is blown out and the back blowing in which the wind is blown out from the rear outlet 11. Of the shutters 28a and 28b, the left one (28a) switches between front blowing and back blowing at the first switching outlet 23, and the right one (28b) at the second switching outlet 25. Switching between front blowing and back blowing. Since the shutters 28a and 28b slide in the front-rear direction in this way, the locus of the shutter operation is small, so that space is not saved and space is saved.

  FIG. 16 is an explanatory view showing various modes of operation of the damper mechanism 26 of the dehumidifier 1, and FIG. 17 is an explanatory view of the air passage at that time. The shutter 28a on the first air path side and the shutter 28b on the second air path side can be individually opened and closed. When the shutter is on the open position side, the front air outlet 8 is selected, and when the shutter is on the close position side, the front air outlet 8 is closed and the rear air outlet 11 is selected. The dehumidifier can be operated in four modes depending on the positions of the shutters 28a and 28b of the damper mechanism 26. For example, in the dehumidified air mode in which the shutters 28a and 28b are in the open position, cool air and warm air are blown out from the front side air outlets 8 (23, 25) (FIG. 16A). The air path at this time is as shown at “front blowing” in FIGS. In the cool air mode in which the shutter 28a is in the open position and the shutter 28b is in the closed position, only the cool air is blown out from the front side air outlet 8 (23) (FIG. 16B). The air path at this time is as shown in (a) “front blowing” and (d) “back blowing” in FIG. In the warm air mode in which the shutter 28a is in the closed position and the shutter 28b is in the open position, only the warm air is blown out from the front-side outlet 8 (23) (FIG. 17C). The air path at this time is as shown in FIG. 17B (b) “back blowing” and (c) “front blowing”. In the fully closed mode in which both the shutters 28a and 28b are in the closed position, both cool air and warm air are blown out from the rear outlet 11 (17 (d)). The air path at this time is as shown in FIG. 17B (b) “back blowing” and (d) “back blowing”. By entering this fully closed mode when the operation is stopped, dust can be prevented from entering inside. Moreover, since this state can be used even when the louver 9 is closed, it can be used after the operation is turned off, such as after-blowing for cooling the inside.

Next, the outline of the operation of the dehumidifier 1 according to the embodiment of the present invention will be described by focusing on the operation mode corresponding to the opening / closing of the shutters 28a and 28b.
(1) First operation mode (dehumidifying air mode)
This dehumidifying wind operation is intended to prevent clothes from drying and dew condensation including drying such as dehumidifying operation, shoes, futons, shoe boxes and closets. The dehumidifying air mode is set by operating a dehumidifying air operation mode switch (not shown) of the operation device 31. In the case of this dehumidifying wind operation, as shown in FIGS. 8 to 10, 16 (a) and 17 (a) and 17 (c), the cold air generated by the evaporator 15 and the temperature generated by the condenser 16 are used. Both winds are blown out from the front-side outlet 8 at the first and second switching outlets 23 and 25, respectively. In order for the cool air generated by the evaporator 15 to blow out from the front side outlet 8 at the first switching outlet 23, the left shutter 28a in the shutter frame 27 of the damper mechanism 26 is rotated by the rotation of the link driving motor 29a. The link member 30a is driven and slid backward as shown in FIG.

  At the same time, since the warm air generated by the condenser 16 is blown out from the front-side outlet 8 at the second switching outlet 25, the right shutter 28b in the shutter frame 27 of the damper mechanism 26 is connected to the link driving motor. The link member 30b is driven by the rotation of 29b and is slid rearward as shown in FIG. In this manner, in the dehumidifying air operation, the cold air generated by the evaporator 15 is blown from the front-side air outlet 8 at the first switching air outlet 23, and the hot air generated by the condenser 16 is also the second air. The air is blown out from the front-side air outlet 8 at the switching air outlet 25 and merges with the cold air, and both the cold air and the hot air are blown out.

  Thus, in the dehumidifying wind operation, dry air can be blown out from the front-side air outlet 8 at the first and second switching air outlets 23 and 25 by combining the dry cold air and the warm air. For example, it may be used when it is desired to dry the laundry indoors on a rainy day. In this case, the laundry is often dried at a relatively high position in the room. Therefore, the louver 9 is set so that the louver angle is narrowed by operating a louver changeover switch (not shown) in the operation device 31 so that dry air is blown out toward a relatively high position. That is, as shown in FIGS. 8 to 10, the closed louver 9 opens the front side air outlet 8 at the first and second switching air outlets 23 and 25 by the rotation of the louver motor 10. The dry air is blown out toward a relatively high position.

(2) Second operation mode (cold air mode)
In this cold air operation, simple cold air (spot cooler) and dehumidification are performed. The cold air mode is set by operating a cold air / hot air operation mode switch (not shown) of the operation device 31. In this cold air operation, as shown in FIGS. 11 to 13, 16 (b) and 17 (a) and 17 (d), only the cold air generated by the evaporator 15 is supplied to the first switching outlet 23. Then, the warm air generated by the condenser 16 is blown out from the back outlet 11 at the second switching outlet 25. For this purpose, the left shutter 28a in the shutter frame 27 of the damper mechanism 26 is connected to the link drive motor so that the cold air generated by the evaporator 15 is blown out from the front-side blower outlet 8 at the first switching blower outlet 23. The link member 30a is driven by the rotation of 29a and is slid rearward as shown in FIG. At the same time, the right shutter 28b in the shutter frame 27 of the damper mechanism 26 is connected to the link driving motor so that the warm air generated by the condenser 16 is blown out from the rear outlet 11 at the second switching outlet 25. The link member 30b is driven by the rotation of 29b and is slid forward as shown in FIG. In this way, in the cold air operation, the warm air generated by the condenser 16 is guided and blown out from the rear outlet 11 in the second switching outlet 25, and from the first switching outlet 23 by the evaporator 15. Only the generated cold air will blow out.

  In this cold wind operation, the case where a user is used in the state located in front of the dehumidifier 1 is assumed. Therefore, the louver 9 is set so that the louver angle is widened by operating a louver changeover switch (not shown) in the operating device 31 so that the cool air blows out toward the front of the dehumidifier 1. In this way, in the cold air operation, the cool air can be efficiently blown toward the person located in front of the dehumidifier 1, that is, the dehumidifier 1 becomes a simple cold air fan.

(3) Third operation mode (warm air mode)
This warm air operation is to perform clothes drying, condensation prevention, and dehumidifying operation including drying of shoes, futons, shoe boxes and closets. The hot air operation mode is set by operating a cold air / warm air operation mode switch (not shown) of the operation device 31. In the case of this hot air operation, as shown in FIGS. 16B, 17B, and 17C, only the warm air generated by the condenser 16 is blown from the front side at the second switching outlet 25. The cool air generated by the evaporator 15 is blown out from the outlet 8 and blown out from the rear outlet 11 at the first switching outlet 23. For this purpose, the right shutter 28b in the shutter frame 27 of the damper mechanism 26 is used for link driving so that the warm air generated by the condenser 16 is blown out from the front-side outlet 8 at the second switching outlet 25. The link member 30b is driven by the rotation of the motor 29b and is slid rearward as shown in FIG.

  At the same time, the left shutter 28a in the shutter frame 27 of the damper mechanism 26 is connected to the link driving motor 29a so that the cold air generated by the evaporator 15 is blown out from the rear outlet 11 at the first switching outlet 23. The link member 30a is driven by this rotation and is slid forward as shown in FIG. In this way, in the hot air operation, the hot air generated by the condenser 16 is guided and blown out only from the front-side air outlet 8 at the second switching air outlet 25, and the rear air outlet at the first switching air outlet 23. 11, the cold air generated by the evaporator 15 is blown out.

  In this hot air operation, the laundry is often dried at a relatively high position in the room. Therefore, the louver 9 is set so that the louver angle is narrowed by operating a louver changeover switch (not shown) in the operating device so that the dry air is blown out toward a relatively high position. In this manner, the first and second switching air outlets 23 and 25 blow warm air from the front air outlet 8 toward a relatively high position to dry the clothes. At this time, by using the heating device 21, the temperature of the warm air can be increased, and the speed of clothing drying can be increased.

  Furthermore, in the warm air operation, a case where the user is used in a state of being positioned in front of the dehumidifier 1 is assumed. Therefore, the louver 9 is set so that the louver angle is widened by operating a louver changeover switch (not shown) in the operating device 31 so that warm air blows out toward the front of the dehumidifier 1. Thus, in the warm air operation, the warm air can be efficiently blown out toward the person located in front of the dehumidifier 1, and the dehumidifier 1 can be used as a simple heater by using the heating device 21. It can also be used.

(4) Fourth operation mode (back wind mode)
This back wind operation is used to dry the internal cooling (particularly the heating unit) and the water attached to the evaporator 15 as a heat exchanger (internal drying) when the refrigeration cycle is stopped. The rear air blowing mode is automatically set after the operation of the dehumidifier 1, for example, when the operation of the refrigeration cycle is stopped. In the case of this rear operation, as shown in FIGS. 14, 16, and 17 (b) and 17 (d), the wind generated by the first air path blower 19 and the second air path blower 20 are generated. Both the blown winds are blown out from the rear outlet 11 at the first and second switching outlets 23 and 25. For this purpose, the shutters 28a and 28b in the shutter frame 27 of the damper mechanism 26 are linked so that the wind generated by the first air passage blower 19 is blown out from the rear outlet 11 at the first switching outlet 23. The link members 30a and 30b are driven by the rotation of the drive motors 29a and 29b, and are slid forward as shown in FIG. In this way, in the back wind operation, the wind generated by the first air path blower 19 is blown from the back air outlet 11 at the first switching air outlet 23 and the wind generated by the second air path blower 20. Is also blown out from the rear outlet 11 at the second switching outlet 25. In this rear wind operation, when the operation of the refrigeration cycle is stopped, the air sucked from the first and second air passage inlets 12 and 13 by the first and second blowers 19 and 20 is sent to the evaporator 15 and the condenser 16. Since it blows out from the back surface outlet 11 in the 1st and 2nd switching air outlets 23 and 25, the condenser 16 and the cooling of the heating apparatus 21, and the water | moisture content attached to the evaporator 15 can be dried. In this case, the electromagnetic valve 37 of the hot gas bypass circuit 36 shown in FIG. 3 is opened, and the discharge gas of the compressor 17 is bypassed by the evaporator 15 to heat the evaporator 15, thereby evaporating more efficiently. The water adhering to the vessel 15 can be evaporated.

  FIG. 18 is a transition diagram of the damper mechanism 26 when the operation mode is switched. In the figure, reference numeral 1 denotes a shutter 28a, and 2 denotes a shutter 28b. J1 to J4 represent the state of the damper mechanism in each operation mode. The state J1 is a state of the damper mechanism 26 when the operation is stopped. Both shutters 28a and 28b are closed. The state J2 is the state of the damper mechanism 26 in the dehumidifying air mode, and both the shutters 28a and 28b are in the open position. State J3 is the state of the damper mechanism 26 in the cold air mode, where the shutter 28a is in the open position and the shutter 28b is in the closed position. State J4 is the state of the damper mechanism 26 in the warm air mode, where the shutter 28a is in the open position and the shutter 28b is in the open position.

  Next, the movement order of the shutters 28a and 28b when the state of the damper mechanism 26 is changed will be described. When switching from the state J1 stop (shutter 28a: closed, shutter 28b: closed) to the dehumidifying air mode (shutter 28a: open, shutter 28b: open) in state J2, switching is performed in order of procedure T1. . First, the shutter 28b is opened, and then the shutter 28a is opened. The reason for this is that the amount of hot air is larger than the amount of cold air, and the wind noise is loud. Therefore, when both the shutters are opened, there is an advantage that the wind noise when the shutter is closed can be reduced by opening from the shutter having the larger air volume.

  Next, when switching from the state J1 to the cold air mode in the state J3 (shutter 28a: open, shutter 28b: closed), the procedure is performed in the order of step T2. First, the shutter 28a is opened. In general, the state is now J3. However, after the shutter 28a is opened, the shutter 28b is closed. In this way, even when the shutter 28b switches the operation mode during the shutter operation, or when the shutter 28b is slightly opened due to vibration, wind pressure, etc., the shutter is in a correct state, and the operation can be performed with the normal efficiency. For the same reason, switching from the state J1 to the warm air mode in the state J4 (shutter 28a: closed, shutter 28b: open) is performed in the order of the procedure T3. After opening the shutter 28b, an operation of closing the shutter 28a is performed.

  Further, when switching from the cold air mode of the state J3 to the dehumidified air mode of the state J2, it is performed in the order of the procedure T4a. First, the shutter 28b is opened. Generally, the state is now J2, but an operation of opening the shutter 28a is performed after opening the shutter 28b. In this way, even when the shutter 28a switches the operation mode during the shutter operation or when the shutter 28a is not fully opened due to vibration, wind pressure or the like, the shutter is in a correct state, and the operation can be performed with the normal efficiency. For the same reason, when switching from the warm air mode of the state J4 to the dehumidifying air mode of the state J2, the operation of closing the shutter 28b is performed after opening the shutter 28a as in the procedure T5a.

  Next, when switching from the dehumidifying air mode in the state J2 to the cold air mode in the state J3, the procedure T4 is performed. Generally, the state J3 is established by closing the shutter 28b. However, in this embodiment, the shutter 28a is first opened and then the shutter 28b is closed. In this way, even when the shutter 28b switches the operation mode during the shutter operation, or when the shutter 28b is closed due to vibration, wind pressure or the like, the shutter is in a correct state, and abnormal wind-off due to the closing of both shutters. Sound can be eliminated. When switching from the dehumidifying air mode in state J2 to the warm air mode in state J4, for the same reason, an operation to open the shutter 28b is performed first, and then the shutter 28a is closed.

  Next, when switching from the cold air mode of the state J3 to the hot air mode of the state J4, it is performed in the order of the procedure T6. The shutter is opened from the closed shutter b for reasons of wind noise reduction, and the opened shutter a is closed after the shutter b is opened. When switching from the hot air mode of state J4 to the cold air mode of J3, the procedure T6a is performed for the same reason. It opens from the closed shutter 28a, and the opened shutter 28b is closed after the shutter 28a is opened. The operation sequence of the shutters 28a and 28b can provide a highly reliable dehumidifier with less wind noise.

  FIG. 19 is a time chart of signals at various parts when the damper mechanism 26 is switched. From the top of the figure, there are an operation switch signal, an operation mode changeover switch signal, a link drive motor 29a drive signal, and a link drive motor 29b drive signal. Initially, the operation is off and the shutters 28a and 28b are closed. The default operation mode is the warm air mode. When the operation is turned on by the operation switch, a signal having a predetermined number of pulses in the opening direction is given to the link driving motor 29b to open the closed shutter 28b as in step T3. In this example, the link drive motor that opens and closes the shutter is a stepping motor, so it is possible to obtain an accurate angle according to the number of pulses of the applied signal, but a signal for switching from closed to open and from open to closed The number of pulses is set to a predetermined number of pulses that is sufficient to absorb the linkage and gear play. After outputting the predetermined number of pulses, a signal having a predetermined number of pulses in the closing direction is given to the link driving motor 29a to close the shutter 28a when it is open. At this time, since the normal shutter 28a is closed, the shutter 28a does not move during the output of this signal. The state where the predetermined pulse output to the link driving motor 29a is completed is the hot air mode.

  Next, when the operation mode changeover switch is operated to change the operation mode, the cold air mode is set. First, in accordance with the procedure T6a, a signal having a predetermined number of pulses in the opening direction is given to the link driving motor 29a for opening the shutter 28a. Here, both shutters are temporarily opened to be in a dehumidified air state. Thereafter, a signal having a predetermined number of pulses in the closing direction is given to the link driving motor 29b for closing the shutter 28b. When this output is finished, the mode is the cold air mode.

  Next, when the operation switch is input, the operation is turned off. The procedure is T2a. First, in order to close the shutter 28a in the open state, a signal having a predetermined number of pulses in the closing direction is output to the link driving motor 29a. Thereafter, in order to close the shutter 28b, a signal having a predetermined number of pulses in the closing direction is output to the link driving motor 29b to be fully closed. Thus, by shifting the operation timing of the plurality of link driving motors 29a and 29b, a power source having a small capacity can be used by suppressing the peak of the driving current of the motor.

  FIG. 20 is an explanatory diagram showing switching of operation modes by the operation device 31 of the dehumidifier 1. This operation mode is classified into a continuous system and a clothing drying system, and the continuous system has the above-described dehumidifying air mode, cold air mode, and hot air mode, and when the user selects, the operation is fixed in that mode. The clothes drying system includes a standard mode, a thick mode, a heater mode, and a cooling mode after drying. These modes are operations in which the damper mechanism 26, the fans 19, 20 and the heating device 21 are automatically set in accordance with the setting of the user. The user selects one of the seven modes in FIG.

It is an operation mode that takes into consideration the drying characteristics of clothing, and can be set to four types: standard, thick, heater, and cooling after drying with a clothing drying mode switch (not shown).
(A) When set to standard When set to standard, the ratio of cold air to hot air is changed according to the temperature and humidity conditions, and the front side outlet 8 in the case of dehumidified air operation, hot air operation, and cold air operation Table 1 shows the open / closed state of the shutters 28a and 28b of the damper mechanism 26.

  The conditions of temperature and humidity at that time are as shown in Table 2.

  Looking at Table 2, for example, when the temperature is 15 ° C. or more and less than 25 ° C. and the set humidity H (60%) or more, drying is performed with the dehumidifying air A (dehumidifying air mode), and the set humidity H (60%) If the temperature is less than 15 ° C., drying is performed with the warm air B (warm air mode). In addition, the set humidity H is switched to 65% at a high temperature of 25 ° C. or higher, and when the set humidity H (65%) or higher, drying is performed with the dehumidifying air A, and when the set humidity H is less than 65% (65%). Dry with warm air B.

  Therefore, according to Tables 1 and 2, during the drying operation of the clothes, the operation starts with the dehumidifying air A (dehumidifying air mode), and when the room temperature or humidity falls to the set temperature or the set humidity shown in Table 2, for example, Shift to operation in (warm air mode), operation until the end of drying, and operation until the end of drying with warm air B (warm air mode) in the case of low temperature or low humidity below the set temperature and set humidity shown in Table 2, for example There are two driving patterns. In addition, there is a dehumidifying air mode with the dehumidifying air A until the drying is completed as clothes drying other than the above.

(B) When set to be thick As shown in the graph of FIG. 21, there are two types of clothing drying characteristics: a constant rate region in the first half part and a reduction rate region in the second half part. It is known that the drying speed in the constant rate area in the first half is greatly affected by the air volume (wind speed), and that the rate in the latter half is affected by temperature or relative humidity. It is also known that the ratio between the constant rate region and the reduction rate region varies depending on the type and thickness of the clothing. Therefore, the first half portion can be dried quickly by blowing the dehumidified air (cold air + hot air) with the largest air volume, and the second half by blowing only hot air having a high temperature. As a point for switching from the constant rate range to the reduction rate range, the temperature is calculated from the room temperature and relative humidity, or switched according to the operation time. In addition, since thick clothing has a low constant rate region, warm air operation is effective from the beginning to the end. Table 3 summarizes the above in relation to the elapsed time from the start of operation according to the type of laundry.

(C) When a heater is set In the case of a dehumidifier using a refrigeration cycle, the dehumidifying capacity is reduced at low temperatures. Therefore, the laundry can be quickly dried by providing the heating device 21 in the second air passage 24 and increasing the temperature of the hot air. Moreover, the low temperature can be detected based on the temperature, and the heating device 21 can be automatically turned on and off.

(D) When set to cooling after drying After drying is completed, switch to the cold air mode and operate for a predetermined time. By doing in this way, the temperature of clothing can be lowered in the high temperature season and can be worn comfortably.

  Next, the control operation by the control unit 100 of FIG. 1 will be described based on the flowchart of FIG. In the flowchart of FIG. 22, the first air passage blower 19 is described as the blower 1, and the second air passage blower 20 is described as the blower 2. When the power is turned on, the program of the microcomputer 120 constituting the control unit 100 starts. In step S1, the data from the humidity detecting means 33 is taken and the humidity is measured, and in step S2, the data from the room temperature detecting means 34 is taken and the temperature is measured. In step S3, the state of the operation switch (not shown) of the controller device 31 is monitored. If there is an input from the operation switch, the process branches to step S4. In step S4, the operation is switched on and off. In step S5, the process branches depending on whether the operation is on or off. The operation branches to step S10 during operation and to step S6 when the operation is cut off. When the operation is cut off, the louver 9 is closed in step S6, the first air passage blower 19 and the second air passage blower 20 are stopped in step S7, and the shutters 28a and 28b are closed (or maintained in step S8). ). Thereafter, the process returns to step S1, and the process is repeated from step S1 again.

  Next, the operation at the time of operation will be described. When the operation switch input is detected in step S3 when the operation is cut off, the operation is switched on in step S4. At the start of operation, the process branches to step S10 in step S5. In step S10, an input of an operation mode changeover switch (not shown) of the controller device 31 is monitored. When the input of the operation mode switch is detected, the process branches to step S11 to switch the operation mode. In step S12, the process branches to each process according to the operation mode set in step S11. When the operation mode is the dehumidifying air mode, the process branches to step S20, where the shutter 28a and the shutter 28b are opened, and both cold air and hot air are blown out from the front side air outlet 8. If the operation mode is set to the cold air mode, the process branches to step S21 in step S12, the shutter 28a is opened, the shutter 28b is closed, and only the cold air is blown out from the front side air outlet 8, and the hot air is blown out from the rear side air outlet 11. Is done. Further, when the operation mode is set to the hot air mode, the determination is made in step S12, and the process branches to step S22, the shutter 28b is opened, the shutter 28a is closed, and only the hot air is blown out from the front side outlet 8. It blows out from the rear outlet 11. If the operation mode is set to the clothes drying mode, the determination is made in step S12, and the process branches to step S39 to perform the processing described later (see FIGS. 23 to 26 described later). Further, the optimum air volume is set in steps S23 to S25 depending on the operation mode, and is sent to and controlled by the air blower driving means 46 and 47 of the first air passage blower 19 and the second air passage blower 20, respectively. In step S13, the input of the louver switch is monitored, and when the input of the louver switch is detected, the process branches to step S14 and the louver setting is switched. In step S15, the process branches to steps S30 to S33 according to the louver setting, and a control signal for operating the louver 9 set in each step is generated. Thereafter, the process returns to step S1, and the process is repeated again from step S1.

  FIG. 23 to FIG. 26 are flowcharts showing details of the processing in step S39, FIG. 23 is when the standard is set in the clothes drying mode, FIG. 24 is when thick is set, and FIG. When the heater (heating device) is set, FIG. 26 is a flowchart showing each process when cooling after drying is set, and FIG. 27 shows each part when the standard is set in the clothes drying mode. It is a timing chart which shows the operation | movement.

First, as shown in FIG. 23, when the operation mode is set to the standard, if the standard is set in step S12, the process branches to step S40. If the operation time after the standard is selected in step S40 is less than 30 minutes, the process branches to step S43A. In step S43A, it is determined whether or not the room temperature is less than 15 ° C. If the room temperature is less than 15 ° C, the shutter 28a and the shutter 28b are opened in step S41, and if the room temperature is 15 ° C or more, the shutter 28a is closed in step S41A. The shutter 28b is opened. Thereafter, rank 1a and rank 1b are set for the first air passage blower 19 and the second air passage blower 20 in step S42. The relationship between the rank of the blower and the air volume is as shown in Table 4. Thereafter, the process proceeds to step S13 in FIG.
If 30 minutes have elapsed since the standard was selected, the process branches to step S44.

  In step S44, it is determined whether the room temperature is less than 25 ° C. If it is less than 25 ° C., 60% is set as the set humidity H in step S46. If the room temperature is 25 ° C. or higher, the set humidity H is set to 65% in step S45. In step S47, the set humidity H is compared with the current humidity. If the current humidity is less than the set humidity H, it is determined in step S43 whether the room temperature is less than 15 ° C. If it is 15 ° C. or higher, the shutter 28a and the shutter 28b are opened in step S48, and if the room temperature is lower than 15 ° C., the shutter 28a is closed and the shutter 28b is opened in step S48A. In step S42, ranks 2a and 2b are set for the air volumes of the first air passage blower 19 and the second air passage blower 20, respectively. Thereafter, the process proceeds to step S13 in FIG. If the current humidity is equal to or higher than the set humidity H in step S47, the shutter 28a is closed and the shutter 28b is opened in step S50, and the first air path blower 19 and the second air path blower 20 are ranked in step S51. 3a and rank 3b are set.

When ranks of the first air passage blower 19 and the second air passage blower 20 are set in step S51, the process proceeds to step S52. In step S52, it is confirmed whether or not the drying time has been calculated. If the drying time has not been calculated, the drying time is calculated in step S53. This drying time is calculated | required by following Formula.
y = a × T + b
t2 = t1 × y
However, a and b are constants, T is the temperature detected by the room temperature detecting means 34 (room temperature), t1 is the time from the start of operation until the humidity drops to the set humidity H, and 30 minutes after the start of the drying operation is the drying time ( Since t2) is not calculated, the minimum value is 30 minutes. t2 is the drying time. The calculation of the drying time (t2) is performed only once when the standard operation is set and the humidity falls below the set humidity H. The drying time is cleared when the operation mode is switched or the operation is turned off. In step S54, it is determined whether the set drying time (t2) has elapsed. If not, the process proceeds to step S13 as it is. When the drying time (t2) has elapsed, an operation end process is performed in step S55. By performing this step S55, the same processing as when the operation is turned off is performed.

  The control state when the standard is selected in the clothes drying mode is as shown in the time chart of FIG. In the figure, the indoor humidity change by the humidity detecting means 33, the compressor operation, the operation mode, the operation of the first air passage fan, and the second air passage fan operation are shown. At the start of operation, the operation mode is the dehumidifying air mode as described above. The damper mechanism 26 is in the open position for both shutters 28a and 28b. The first air passage blower 19 and the second air passage blower 20 operate at a predetermined rank (1a, 1b). In this example, since the moisture from the laundry is not diffused in the room at the start of operation, the operation is performed with a large air volume for a predetermined time. When the operation is performed for a predetermined time (in this example, for example, 30 minutes), the fan rank corresponding to the operation mode is switched (ranks 1a, 1b → 2a, 2b). When moisture is evaporated from the fiber surface of the laundry by the dehumidifying air, the evaporated moisture increases indoor humidity. As the operation continues, the surface of the laundry dries and the evaporation of moisture decreases, eventually the room humidity also decreases. In this state, the laundry fibers still contain a lot of moisture. This timing can be grasped by the humidity change in the room. When the indoor humidity falls to a predetermined humidity (for example, 60% in this example), the operation mode is switched to the warm air mode (B in the figure). As a result, the shutter 28a is closed and 28b is switched to open. Hot air blows out from the front-side air outlet 8, and cold air blows out from the rear air outlet 11. Further, the first air path blower 19 and the second air path blower 20 are switched to the fan rank (3a, 3b) corresponding to the warm air mode. When the warm air hits the laundry, the moisture inside the fiber starts to evaporate and is operated as it is, so that the laundry is completely dried. By operating in this way, surface drying is accelerated in a dehumidifying air mode with a large air volume, and drying inside the fibers is performed with warm air, thereby shortening the time until drying. Further, in this example, the drying time is estimated by multiplying the time from the start of operation until it falls to the set humidity (60%) by a predetermined coefficient, and automatically stops.

  Next, when the operation mode is set to be thick as shown in FIG. 24, the following processing is performed. However, the description of the same operation as the standard is omitted, and only the differences will be described. If the operation mode is thick, the operation is performed with the shutter 28a closed and the shutter 28b opened in step S56 for 30 minutes after setting the thick (warm air mode). Even after 30 minutes have passed, the operation is performed with the shutter 28a closed and the shutter 28b opened in steps S57 and S58 regardless of the temperature and humidity.

  Next, when the operation mode is set to the heater (heating device) as shown in FIG. 25, the following processing is performed. However, the description of the same operation as the standard is omitted, and only the differences will be described. If the operation mode is a heater, the heating device 21 is turned on in step S49 for operation. In this case, the heating device 21 is turned off at the end of the operation or operation mode switching. The other steps are the same as the standard.

  Next, when the operation mode is set to cooling after drying as shown in FIG. 26, the following processing is performed. However, the description of the same operation as the standard is omitted, and only the differences will be described. If it is determined in step S40 that 30 minutes have elapsed, a flag is determined in step S60 as to whether cooling is in progress. Since the cooling flag is initially cleared, the process proceeds to step S44. The processes in steps S44 to S54 in this flowchart are the same as in the standard case. When the drying time ends in step S54, the process branches to step S61. In step S61, the cooling operation is started and the cooling flag is set. If the cooling flag is set, the process branches to step S62 in step S60. In step S62, the shutter 28a is opened and the shutter 28b is closed, whereby cold air is blown out from the front outlet. In step S63, ranks 3a and 3b are set for the first air passage blower 19 and the second air passage blower 20. In step S64, it is determined whether or not the cooling has been performed for a predetermined time. When the cooling time has elapsed, the process branches to S65 and the operation end process is performed. In this way, in hot season, the laundry is cooled and there is no discomfort when worn.

  As described above, in the present embodiment, for example, in the case of the clothes drying mode (standard), the front side air outlet 8 is selected as the air outlet for the first air path 22 and the second air path 24 at the start of operation. When the damper mechanism 26 is controlled to reduce the humidity to a preset humidity, the front air outlet 8 is selected as the air outlet for the second air path 24, and the first air path 22 Since the damper mechanism 26 is controlled so as to select the rear outlet 11 as the outlet, not only cold air, cold air and mixed air but also hot air can be blown out from the front side outlet 8, and the laundry It can speed up drying and improve the finish of the laundry.

  Moreover, in this embodiment, when the humidity of the room which dries laundry etc. falls to the preset setting humidity, the air volume of the air blower 19 for 1st airways and the airflow fan 20 for 2nd airways is changed. This is because of the following reasons. When the damper mechanism 26 blows out from the rear outlet 11, the air path is bent and the pressure loss of the air path increases, so that the air volume is reduced by the control as it is. In order to avoid this, the air volume is increased at the time of rear side blowing, and the same air volume as that of the front blowing is secured to enable stable operation. The degree of pressure loss in the air passage is weakened in the order of blowing dehumidified air> blowing cold air and warm air> blowing back air, and accordingly increases the rotation speed of the motors 19a and 20a of the blower accordingly. I am doing so.

The functional block diagram which showed the outline | summary of the dehumidifier which concerns on Embodiment 1. FIG. FIG. 2 is an internal block diagram of a control unit in FIG. 1. The block diagram of the refrigerating cycle of FIG. The control block diagram which showed the detail of the control system of the dehumidifier which concerns on Embodiment 1. FIG. The perspective view seen from the front of the dehumidifier concerning Embodiment 1. FIG. C-c 'sectional drawing of FIG. The perspective view seen from the back of the dehumidifier of FIG. Sectional drawing explaining the dehumidification wind driving | operation which cut | disconnected the front side of the dehumidifier of FIG. FIG. 9 is a cross-sectional view taken along line AA in FIG. 8. BB sectional drawing of FIG. Sectional drawing explaining the cold wind driving | operation which cut | disconnected the front side of the dehumidifier of FIG. FIG. 12 is a sectional view taken along line AA in FIG. 11. BB sectional drawing of FIG. The perspective view which fractured | ruptured a part seen from the front surface of the dehumidifier of FIG. The perspective view which shows the structure of a damper mechanism (state seen from the lower side). Explanatory drawing which shows the various aspects of operation | movement of a damper mechanism. Explanatory drawing of an air path. The transition diagram of a damper mechanism at the time of operation mode switching of a dehumidifier. The timing chart of the signal of each part of a dehumidifier. The flowchart which shows the switching operation of an operation mode. The characteristic view which shows the weight change at the time of cloth drying. The flowchart which shows the control action of a dehumidifier. The flowchart which shows a process when clothing drying mode (standard) is selected. The flowchart which shows a process when clothing drying mode (thick) is selected. The flowchart which shows a process when clothing drying mode (heater) is selected. The flowchart which shows a process when clothing drying mode (cooling after drying) is selected. The timing chart which shows the signal of each part when clothing drying mode (standard) is selected.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Dehumidifier, 7 Casing, 8 Front side outlet, 9 Louver, 10 Louver motor, 11 Back outlet, 12 1st air path inlet, 13 2nd air path inlet, 14 Filter frame, 15 Evaporator, DESCRIPTION OF SYMBOLS 16 Condenser, 17 Compressor, 18 Drain tank, 18a Float, 19 1st air path fan, 20 2nd air path fan, 21 Heating device, 22 1st air path, 23 1st switching blower outlet, 24 second air passage, 25 second switching outlet, 26 damper mechanism, 27 shutter frame, 28a, 28b shutter, 29a, 29b link driving motor, 30a, 30b link member, 31 operation device, 32 display device, 33 Humidity detection means, 34 Room temperature detection means, 35 Expansion valve, 36 Hot gas bypass circuit, 37 Solenoid valve, 100 Control unit, 110 Refrigeration cycle, 120 Microcomputer Data, 124 input device, 126 output device.

Claims (5)

A refrigeration cycle having at least an evaporator and a condenser; a first blower that guides cold air that has passed through the evaporator to a first air path; and a first air duct that guides hot air that has passed through the condenser to a second air path. 2 blowers, a plurality of air outlets provided corresponding to the first air path and the second air path, and a damper mechanism capable of selecting the air outlets of the first air path and the second air path, A dehumidifier comprising humidity detection means for detecting humidity, and control means for determining an operation control method based on an output of a detection signal of the humidity detector and controlling operation of the dehumidifier,
The control means controls the damper mechanism so as to select a predetermined air outlet as an air outlet for the first air path and the second air path at the start of operation, and the humidity detected by the humidity detecting means When the humidity is lowered to a preset set humidity, the predetermined air outlet is selected as the air outlet for the second air passage, and another air outlet is selected as the air outlet of the first air passage. A dehumidifier that controls the damper mechanism. Provided with a plurality of operation modes, operation mode switching means for selecting one of them,
When the predetermined operating mode is selected, the control means selects the predetermined air outlet as the air outlet for the second air path when the humidity is reduced to a preset set humidity. The dehumidifier according to claim 1, wherein the damper mechanism is controlled so as to select another air outlet as the air outlet of the first air passage.   The dehumidifier according to claim 2, wherein the control unit changes a set humidity for switching the air outlet according to the selected operation mode. Motor control means for individually controlling the first blower and the second blower,
The control means includes
2. The dehumidification according to claim 1, wherein when the humidity drops to a preset set humidity, the motor control unit is controlled to change the air flow rate of the first blower and the second blower. Machine. Equipped with room temperature detection means for detecting the temperature in the room,
The dehumidifier according to any one of claims 1 to 4, wherein the control means changes a set humidity for switching the air outlet according to an output of the room temperature detection means.

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