JP2009183924A - Dehumidifier - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent occurrence of dew condensation by providing a dew condensation sensor detecting the moment immediately before dew condensation in a first air duct. <P>SOLUTION: The dehumidifier is provided with: a dehumidifier body 1; a refrigeration cycle mechanism 2 in the dehumidifier body 1, serving as a unit composed of a compressor 3 as a compressing part, a condenser 4, and an evaporator 7; and a cold-hot air function of blowing out cold air passing through the evaporator 7 and hot air passing through the condenser 4 through separated first and second air ducts F1, F2 from separate discharge ports, or from first and second blow-out ports 16, 17. Provision of the dew condensation sensor 43 serving as a detection means for detecting the moment immediately before dew condensation in the first air duct F1, makes it possible to grasp a humidity state in the first air duct F1 cooled by cooling air during dehumidifying operation, and to detect the possibility of occurrence of dew condensation in the first air duct F1 or first blow-out port 16. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a dehumidifier that performs indoor dehumidification.

  When the conventional dehumidifier that discharges the first fluid and the second fluid from the discharge port is operated for a long time, condensation may occur in the path and the discharge port of the first fluid. There has been a problem of falling off (Patent Document 1).

And in the conventional dehumidifier, in order to prevent dew condensation, if it drive | operates for a fixed time, a driving | operation will be stopped automatically.
JP 2003-172525 A

  However, the configuration of the conventional dehumidifier has a problem that, if operation is performed for a certain period of time in order to prevent condensation, the operation is automatically stopped even if there is no risk of condensation.

  An object of this invention is to provide the dehumidifier which solves the said problem and prevents generation | occurrence | production of dew condensation.

  In the dehumidifier according to the first aspect of the present invention, a main body, a unit including a compression unit, a condensing unit, and an evaporating unit in a predetermined part, and a first fluid passing through the evaporating unit, the condensing unit In the dehumidifier having a function of discharging the base 2 fluid passing through a separate discharge path and discharging from the discharge port, the first fluid discharge path is provided with detection means for detecting immediately before dew condensation. And

  A dehumidifier according to a second aspect of the invention is characterized in that, in the dehumidifier according to the first aspect, the operation is automatically stopped when the detection means is detected. The dehumidifier according to a third aspect of the invention is characterized in that, in the dehumidifier according to the first aspect, when the detection means is detected, the compression section is automatically stopped and air is blown for a predetermined time.

  A dehumidifier according to a fourth aspect of the invention is characterized in that, in the dehumidifier according to any one of the first to third aspects, when the detection means is detected, a message to that effect is displayed.

  According to the first aspect of the present invention, it is possible to detect that condensation may occur in the discharge path of the first fluid. According to the invention of claim 2, the operation of the dehumidifier can be stopped before dew condensation occurs in the discharge path of the first fluid.

  According to the invention of claim 3, when there is a risk of condensation occurring in the discharge path of the first fluid by the detection means, when the unit is stopped and air is blown, The unit can be operated automatically.

  According to the invention of claim 4, it is possible to inform the user of the operation stop state of the dehumidifier due to condensation or the operation stop state of the compression unit.

  Hereinafter, preferred embodiments of a dehumidifier according to the present invention will be described with reference to the accompanying drawings.

  FIGS. 1 to 8 show a first embodiment of the present invention. Reference numeral 1 denotes a dehumidifier body, and a refrigeration cycle mechanism 2 serving as a refrigeration circuit described later is provided inside the body 1.

  FIG. 2 schematically shows the configuration of the refrigeration cycle mechanism 2. The refrigeration cycle mechanism 2 includes a condenser 4 serving as a condensing unit that releases heat in the refrigerant to a compressor 3 that is a compressor that circulates (circulates) the refrigerant. The dryer 5, the capillary tube 6 serving as the expansion section, and the evaporator 7 serving as the evaporation section corresponding to the heat exchanger that condenses the moisture in the air are sequentially connected, and the path from the evaporator 7 to the compressor 3. In parallel, a two-way valve 8 as a refrigeration cycle switching unit is provided. Reference numeral 39 denotes a temperature sensor as a frost detection means provided in the evaporator 7. When the temperature sensor 39 detects frost formation on the evaporator 7, the two-way valve 8 is opened. When the two-way valve 8 is closed, a cooling circulation path 9 is formed as a cooling path through which the refrigerant circulates in the path of the compressor 3 → the condenser 4 → the dryer 5 → the capillary tube 6 → the evaporator 7 → the compressor 3. The When the two-way valve 8 is opened, a heating circulation path 10 is formed as a heating path from the compressor 3 → the two-way valve 8 → the evaporator 7 → the compressor 3.

  As shown in FIGS. 1, 3, and 4, the main body 1 is provided with a suction portion 11 that is provided on the back surface of the main body 1 and takes air from outside into the main body 1, and an upper portion of the main body 1. And a blowing unit 12 that blows air inside the main body 1 to the outside, and a blower unit 13 that is provided inside the main body 1 and sends air into the main body 1 from the outside.

  Here, the suction portion 11 includes a first suction port 14 for taking air into the evaporator 7 side inside the main body 1, and a second suction port 15 for taking air into the capacitor 4 side inside the main body 1. It has.

  Further, the blowout portion 12 includes a first blowout port 16 for blowing out dry air as cooling air to the outside of the main body 1 and a second blowout port 17 for blowing out warm air to the outside of the main body 1. .

  The blower 13 includes a first blower 18 for sending air from the first suction port 14 to the first blower outlet 16 inside the main body 1, and a second suction port 15 inside the main body 1. And a second blower 19 for sending air out to the second outlet 17. The first and second air blowers 18 and 19 are respectively composed of fans 20 and 21 driven by motors (not shown).

  As shown in FIGS. 1, 3, and 4, the indoor air taken in from the first suction port 14 by the first blower 18 is dehumidified from the first blower outlet 16 after passing through the evaporator 7. The first air passage F1 as a cold air path that is blown out to the outside of the main body 1 as cold air that is dry air, and the indoor air that is taken in from the second suction port 15 by the second air blower 19 passes through the condenser 4 After that, the second air supply path F2 serving as a warm air path that is blown out from the second air outlet 17 as warm air to the outside of the main body 1 is partitioned by a casing 22 formed inside the main body 1.

  The casing 22 individually covers the first blower 18 and the second blower 19 so that the first space 23 in which the cool air flows in the first blower path F1 and the second blower path F2. The wall is formed continuously to partition the internal space of the main body 1 with the second space 24 through which the warm air flows.

  And the indoor air taken in into the dehumidifier main body 1 from each suction inlet 14 and 15 in the suction part 11 is the 1st air blower 18 provided in the evaporator 7 side, and the 2nd provided in the capacitor | condenser 4 side. The blower 19 is separately passed and blown out as cold air or hot air from the air outlets 16 and 17 in the air outlet 12, respectively, and the cold air locally from the first air outlet 16 of the dehumidifier body 1. It has a spot cold air function that can supply

  As shown in FIG. 1, in the blowing part 12, each blower outlet 16 and 17 is provided in the state adjacent to each other in the upper part of the main body 1, and the opening part of each blower outlet 16 and 17 has the inside and outside of the dehumidifier main body 1 inside and outside. Are provided so as to be able to communicate with each other.

  As shown in FIGS. 1, 3, and 4, the upper part of the dehumidifier main body 1 is provided with a flap 26 that can open the blowing portion 12 when the air inside the main body 1 is sent out.

  As shown in FIGS. 1, 3 and 4, the flap 26 has a plate-like flap body 27 formed so as to be able to cover the adjacent outlets 16 and 17 in the outlet portion 12. A rotating shaft 28 formed on both side ends of the main body 27 is pivotally supported by a bearing portion 29 formed in the vicinity of the blowing portion 12 on the upper part of the dehumidifier body 1.

  As shown in FIG. 3, in the dehumidifier body 1, a drain pan 30 serving as a water receiving unit is disposed below the evaporator 7 serving as an evaporation unit. In the lower part of the main body 1, a water storage tank 31 that can be attached to and detached from the main body 1 is provided below the drain pan 30.

  FIG. 5 is a block diagram showing the configuration of the controller 32 incorporated in the main body 1 and its periphery. In the figure, a controller 32 is provided in a microcomputer (hereinafter referred to as a microcomputer) 35 having a control means 33 and a blower rotation speed adjusting means 34 and a display / operation panel 36 (not shown) provided in the main body 1. The display unit 37 includes an LED (not shown) for displaying an operation state and the like, and the operation unit 38 including various buttons.

  As shown in FIG. 5, the control means 33 detects each temperature information from the temperature sensor 39 and the room temperature sensor 40 for detecting the temperature of the evaporator 7, an operation signal from the operation means 38, and a load current flowing through the compressor 3. Detection information from the load current detection means 41, time information of a built-in timer (not shown), a humidity sensor 42 for detecting the ambient humidity and a dew condensation sensor 43 for detecting the humidity of the first air passage F1. And a function of controlling the rotation speed of the blower 13 and the display of the display means 37 based on the humidity information. Here, the dew condensation sensor 43 includes an element that outputs a change in humidity as a change in resistance value, and has a waterproof property so that it can be used even in a humidity of 100% (wet state). The blower rotation speed adjusting means 34 adjusts the rotation speed of the blower 13 to, for example, either a strong air amount or a weak air amount based on a control signal from the control means 33.

  Further, as shown in FIG. 8, in the printed board 44 mounted on the control means or the display means, the mounting hole 45 for screwing to the dehumidifier body 1 provided on the printed board 44 is not shown. A circular penetrating portion 46 formed larger in diameter than the outer diameter of the screw member, and extending from the inner peripheral surface of the penetrating portion 46 toward the center, spaced apart from each other in the circumferential direction of the penetrating portion 46. And a plurality of claw members 47 arranged. A virtual circle 49 concentric with the penetrating portion 46 formed by connecting the arc-shaped screw holding portions 48 formed at the tips of the plurality of claw members 47 is formed to have substantially the same diameter as the outer diameter of the screw member. The plurality of claw members 47 can hold the screw member.

  Next, the operation of the above configuration will be described. When the operation means 38 is operated to start the dehumidifying operation, the control means 33 outputs a signal for driving the compressor 3 and sends a signal for driving the blower 13 at a predetermined rotational speed to the blower rotational speed adjusting means. 34. As a result, the compressor 3 and the air blowing unit 13 are driven to start the dehumidifying operation of either the strong air amount or the weak air amount. During this dehumidifying operation, since the two-way valve 8 is closed by a control signal from the control means 33, the refrigerant compressed by the compressor 3 circulates through the cooling circuit 9 without passing through the two-way valve 8. That is, the refrigerant enters the condenser 4 from the compressor 3, where the heat in the refrigerant is released, and then enters the capillary tube 6 from the dryer 5 and is expanded. Thereafter, the refrigerant evaporates in the evaporator 7, takes heat from the evaporator 7, reduces the temperature of the evaporator 7, and returns to the compressor 3 again.

  At that time, the indoor air sucked into the main body 1 by the blower 13 touches the evaporator 7 to be cooled and dehumidified, and this cooling air is discharged from the first air outlet 16 to the outside of the main body 1 as dry air. In this case, the water adhering to the evaporator 7 (hereinafter referred to as drain water D) is dropped and dropped onto the drain pan 30 and then collected in the water storage tank 31.

  On the other hand, when the room temperature is low and frost adheres to the evaporator 7, the temperature detected by the evaporator 7 by the temperature sensor 39 decreases. The control means 33 detects the frost formation of the evaporator 7 when the detected temperature from the temperature sensor 39 is a predetermined temperature of, for example, 0 ° C. or lower for a predetermined time or longer, and the dehumidifying operation is changed to the defrosting operation. The control of the refrigeration cycle mechanism 2 is switched. Specifically, the two-way valve 8 is opened by the control means 33, and the refrigerant from the compressor 3 is sent directly to the evaporator 7 through the two-way valve 8 without passing through the condenser 4. As a result, the evaporator 7 acts to release the heat of the refrigerant and raise the temperature, thereby melting the frost attached to the evaporator 7. The refrigerant that has passed through the evaporator 7 returns to the compressor 3 again, and continues the defrosting operation until the temperature detected by the temperature sensor 39 rises.

  Further, during the dehumidifying operation, the control means 33 monitors the load state of the compressor 3 based on the detection information from the load current detection means 43. And when the load of the compressor 3 is less than a preset value, the operation | movement of the weak air quantity which makes the rotational speed of the ventilation part 13 low is performed. On the other hand, when the load of the compressor 3 is equal to or higher than the set value, the control unit 33 determines the current operating state of the air blowing unit 13 and keeps it if it is a strong air amount, and if it is a weak air amount, it places a burden on the compressor 3. In order to relieve, the operation is automatically switched to a high air flow operation in which the rotation speed of the blower 13 is increased.

  Thereafter, when the operation unit 38 performs an operation to stop the dehumidifying operation, the control unit 33 does not immediately stop the driving of the compressor 3 and the air blowing unit 13 but performs the same operation as the defrosting operation for a predetermined time or more. . That is, by opening the two-way valve 8 and forming the heating circulation path 10, the temperature of the evaporator 7 is raised, the water adhering to the evaporator 7 is evaporated, and the temperature detected by the temperature sensor 39 by the evaporator 7 is predetermined. For example, the refrigeration cycle mechanism 2 is controlled so as to be maintained at a temperature of 80 ° C. or higher for about 5 minutes. And when this state passes 5 minutes which are fixed time, the drive of the compressor 3 and the ventilation part 13 will be stopped as what the water | moisture content adhering to the evaporator 7 evaporated sufficiently.

  In addition, the air sucked into the main body 1 from the blower is heated by touching the compressor 3 and is discharged from the second air outlet 17 to the outside of the main body 1 as hot air. As described above, the dehumidifier has a cold / hot air function capable of blowing out cold air and hot air from the first air outlet 16 and the second air outlet 17 provided separately.

  Subsequently, in the dehumidifier during the dehumidifying operation, when the first air passage F1 and the first air outlet 16 are cooled by the cold air passing through the first air passage F1, the first air passage F1 and the first air passage F1 are used. A method of controlling the dehumidifier that prevents dew condensation from occurring at the air outlet 16 will be described with reference to the flowchart of FIG.

  In the dehumidifier during the dehumidifying operation (step S1), the temperature of the first air passage F1 and the first air outlet 16 cooled by the cooling air flowing through the first air passage F1 and the ambient air of the dehumidifier When a difference occurs, moisture in the surrounding air is adsorbed to the cooled first air passage F1 and the first air outlet 16, and the first air passage F1 detected by the dew condensation sensor 43 and the first air passage are detected. The humidity at one outlet 16 increases.

  When the humidity detected by the dew condensation sensor 43 reaches a humidity of 95% set in advance as a state immediately before dew condensation in a storage unit (not shown) of the control unit 33 (step S2), the control unit 33 automatically Stop control of the compressor 3 and each of the air blowers 18 and 19 is performed (step S3). With the stop of the dehumidifying operation due to the stop of the cooling cycle mechanism 2 and the stop of the air blowing operation, the entire dehumidifier is stopped. The dehumidifier is turned off (step S4), and information on the content that the dehumidifier may be condensed and the dehumidifier is stopped is displayed on the display means 37 by an LED or the like ( Step S5).

  Thus, by providing the dehumidifier with the dew condensation sensor 43 that detects the humidity of the first air passage F1 and the first air outlet 16, the first air passage F1 that is cooled by the cooling air during the dehumidifying operation, It becomes possible to grasp the humidity state of the first air outlet 16, and it can be detected that there is a possibility that condensation occurs in the first air passage F <b> 1 or the first air outlet 16.

  Further, the detected humidity detected by the dew condensation sensor 43 that detects the humidity of the first air passage F1 and the first air outlet 16 is the same as that detected by the first air passage F1 and the first air outlet 16 immediately before dew condensation. When the humidity reaches 95%, the operation of the entire dehumidifier including the dehumidifying operation is stopped, so that the dehumidifier is turned on before the dew condensation occurs in the first air passage F1 and the first outlet 16. It becomes possible to stop. Therefore, it is possible to prevent dew (water droplets) in which dew condensation generated in the first air passage F1 and the first air outlet 16 has developed and dripped around the dehumidifier and wet the floor around the dehumidifier. .

  Further, when the humidity detected by the dew condensation sensor 43 reaches 95%, which is a state immediately before dew condensation, there is a risk of dew condensation on the first air passage F1 and the first outlet 16 of the dehumidifier, which includes dehumidification operation. By displaying the information indicating that the operation of the dehumidifier has been stopped on the display means 37 with an LED or the like, it is possible to notify the user of the operation stop state of the dehumidifier due to condensation.

  As another modification of the control method for preventing condensation, only the stop control of the compressor 3 may be performed when the humidity detected by the condensation sensor 43 reaches the humidity of 95% immediately before the condensation. A control method of the dehumidifier in this case will be described based on the flowchart of FIG.

  In the dehumidifier during the dehumidifying operation (step S1), the temperature of the first air passage F1 and the first air outlet 16 cooled by the cooling air flowing through the first air passage F1 and the ambient air of the dehumidifier When a difference occurs, moisture in the surrounding air is adsorbed to the cooled first air passage F1 and the first air outlet 16, and the first air passage F1 detected by the dew condensation sensor 43 and the first air passage are detected. The humidity at one outlet 16 increases.

  When the humidity detected by the dew condensation sensor 43 reaches a humidity of 95% set in advance as a state immediately before dew condensation in a storage unit (not shown) of the control unit 33 (step S2), the control unit 33 automatically The stop control of the compressor 3 is performed (step S3), and the air blowing operation by each of the air blowers 18 and 19 is continued while the dehumidifying operation is stopped by the stop of the cooling cycle mechanism 2 (step S4). In 37, information indicating that there is a risk of condensation on the dehumidifier and the dehumidifying operation is stopped is displayed by an LED or the like (step S5).

  Thereafter, when the humidity detected by the dew condensation sensor 43 does not satisfy the state immediately before dew condensation, for example, a certain period of time elapses while the humidity is less than 95%, the state immediately before dew condensation is avoided by the control means 33, and there is no risk of dew condensation occurring. When it is determined (step S6), the operation of the compressor 3 is resumed (step S7), and the dehumidifying operation of the dehumidifier is automatically resumed (step S8).

  As described above, when the humidity detected by the dew condensation sensor 43 reaches 95% in the state immediately before dew condensation, the dehumidification operation is stopped and before dew condensation occurs in the first air passage F1 and the first air outlet 16. It is possible to stop the dehumidifier. Therefore, it is possible to prevent dew (water droplets) in which dew condensation generated in the first air passage F1 and the first air outlet 16 has developed and dripped around the dehumidifier and wet the floor around the dehumidifier. . Further, when the humidity detected by the dew condensation sensor 43 reaches the humidity of 95% immediately before the dew condensation, the air blowing operation is continued and only the dehumidification operation is stopped, and then the humidity detected by the dew condensation sensor 43 is, for example, the humidity 95 When a predetermined time has elapsed while avoiding the state immediately before dew condensation, the dehumidifying operation can be restarted smoothly by simply restarting the compressor 3, and prevention of dew condensation in the state immediately before dew condensation Control reliability is improved.

  Furthermore, when the humidity detected by the dew condensation sensor 43 reaches 95%, which is the state immediately before dew condensation, there is a risk of dew condensation on the first air passage F1 and the first outlet 16 of the dehumidifier, and the refrigeration cycle mechanism 2 The information indicating that the dehumidifying operation is stopped is displayed on the display means with an LED or the like, so that the user can be informed of the operation stop state of the refrigeration cycle mechanism 2 due to condensation.

  Further, as shown in FIG. 8, in the printed circuit board 44 mounted on the control means 33 or the display means 37 or the like, the mounting hole 45 for screwing the printed circuit board 44 to the dehumidifier body 2 or the like is provided on the printed circuit board 44. A circular penetrating portion 46 formed larger in diameter than the outer diameter of a mounting screw member (not shown), and extending from the inner peripheral surface of the penetrating portion 46 toward the center, the circumferential direction of the penetrating portion 46 Are provided with a plurality of claw members 47 arranged at regular intervals. A virtual circle 49 concentric with the penetrating portion 46 formed by connecting the arc-shaped screw holding portions 48 formed at the tips of the plurality of claw members 47 is formed to have substantially the same diameter as the outer diameter of the screw member. Since the screw members can be held by the plurality of claw members 47, when the printed circuit board 44 is fixed to the dehumidifier body 2 or the like by screwing, it extends from the inner peripheral surface of the through portion 46 toward the center. The screw members are held by the plurality of claw members 47 provided.

  In this case, compared with the case where the diameter of the mounting hole 45 on the printed circuit board 44 is the same as the diameter of the screw member used for mounting, the mounting hole 45 of the printed circuit board 44 and the mounting screw member Since the contact surface is reduced, the frictional resistance applied when the screw member is screwed into the mounting hole 45 is reduced, the screw member is easily screwed in, and the workability during mounting is improved.

  Further, since the screw member at the time of attachment is held at the center of the through portion 46 by a plurality of claw members 47 extending toward the center of the through portion 46, positioning with high accuracy is possible, and the attachment hole In this case, since the screw member is held by the claw member, the contact surface between the mounting hole 45 and the screw member at the time of mounting is reduced, so that the printed board 44 is brought into contact with the printed board 44 by the screw member at the time of mounting. It is possible to prevent the material from being scraped and to prevent the coating of the printed circuit board 44 from peeling off due to the deformation of the printed circuit board 44 caused by the force applied when the screw member is tightened.

  Moreover, the opening part of each blower outlet 16 and 17 is provided with the grid | lattice body 25 formed so that the inside and outside of the dehumidifier main body 1 can be connected, and this grid | lattice body 25 is provided in the opening part of each blower outlet 16 and 17. Thus, it is possible to prevent a human body, a foreign object or the like from entering the inside of the dehumidifier body 1.

  By providing a flap 26 provided on the upper portion of the dehumidifier body 1 so that the angle of the surface of the flap body 27 can be varied with the rotation shaft 28 as an axis with respect to the blowing portion 12, each outlet 16 of the blowing portion 12 is provided. , 17 are provided so that the blowing angle of the cold air and the hot air blown out of the dehumidifier body 1 can be varied.

  As described above, in this embodiment, the dehumidifier body 1 as the main body, the compressor 3 as the compressor, the condenser 4 as the compressor, the evaporator 7 as the evaporator, and the dehumidifier body 1 as the predetermined part. The unit is a refrigeration cycle mechanism 2 that is a refrigeration circuit, and includes a cool air that is a first fluid that passes through the evaporator 7 and a warm air that is a second fluid that passes through the condenser 4 and separate discharge paths. Through the first air passage F1 and the second air passage F2 that are blowout paths and discharged from separate discharge ports, that is, blown out from the first air outlet 16 and the second air outlet 17 that are air outlets, In the dehumidifier having a cold / hot air function, a dew condensation sensor 43 serving as a detection means for detecting immediately before dew condensation is provided in the first air blowing path F1 which is a discharge path of the first fluid and is a discharge path of the cool air.

  If it does in this way, the dehumidifier was equipped with the dew condensation sensor 43 which detects the humidity of the 1st ventilation path F1, and grasps | ascertains the humidity state of the 1st ventilation path F1 cooled by cooling air during a dehumidification driving | operation. Therefore, it is possible to detect that condensation may occur in the first air passage F1 or the first air outlet 16.

  Further, in this embodiment, when the dew condensation sensor 43 detects a state immediately before dew condensation in the first air passage F1, the operation of the entire dehumidifier is automatically stopped.

  If it does in this way, the 1st ventilation path F1 and the 1st blower outlet 16 will detect the detected humidity detected by the dew condensation sensor 43 which has detected the humidity of the 1st blower path F1 and the 1st blower outlet 16. By stopping the operation of the entire dehumidifier when the humidity reaches 95%, which is a state immediately before dew condensation, the dehumidifier is stopped before dew condensation occurs in the first air passage F1 and the first outlet 16. It becomes possible. Therefore, it is possible to prevent dew (water droplets) in which dew condensation generated in the first air passage F1 and the first air outlet 16 has developed and dripped around the dehumidifier and wet the floor around the dehumidifier. .

  Furthermore, in this embodiment, when the dew condensation sensor 43 detects the state immediately before dew condensation in the first air passage F1, the capacitor 4 is automatically stopped and only blows air for a predetermined time.

  If it does in this way, when the humidity detected by the dew condensation sensor 43 reaches the humidity of 95% immediately before the dew condensation, the dehumidifying operation is stopped, and dew condensation occurs in the first air passage F1 and the first outlet 16. It becomes possible to stop the dehumidifier before. Therefore, it is possible to prevent dew (water droplets) in which dew condensation generated in the first air passage F1 and the first air outlet 16 has developed and dripped around the dehumidifier and wet the floor around the dehumidifier. . Further, when the humidity detected by the dew condensation sensor 43 reaches the humidity of 95% immediately before the dew condensation, the air blowing operation is continued and only the dehumidification operation is stopped, and then the humidity detected by the dew condensation sensor 43 is, for example, the humidity 95 When a predetermined time has elapsed while avoiding the state immediately before dew condensation, the dehumidifying operation can be restarted smoothly by simply restarting the compressor 3, and prevention of dew condensation in the state immediately before dew condensation Control reliability is improved.

  Further, in this embodiment, when the dew condensation sensor 43 detects the state immediately before the dew condensation in the first air passage F1, the display means 37 which is a display unit displays that there is a risk of dew condensation on the first air passage of the dehumidifier. Yes.

  If it does in this way, when the detection humidity of the dew condensation sensor 43 reaches 95% which is a state immediately before dew condensation, there is a risk of dew condensation on the first air passage F1 of the dehumidifier, and the entire dehumidifier including the dehumidification operation Information indicating that operation or dehumidification operation has been stopped is displayed on the display means 37 with an LED or the like, thereby using the entire operation stop or dehumidification operation stop state including dehumidification operation of the dehumidifier due to condensation. Can be informed.

  Further, as an effect of the present embodiment, the shape of the mounting hole 45 on the printed circuit board 44 used when the printed circuit board 44 is mounted on a housing such as a product is a nail that is a part having the same size as the diameter of the mounting screw member. By forming the member 47 into a shape having at least a part, the diameter of the mounting hole 45 on the printed circuit board 44 is the same as the diameter of the screw member used for mounting and the entire circumference of the printed circuit board 44. Since the contact surface between the mounting hole 45 and the screw member for mounting is reduced, the frictional resistance applied when the screw member is screwed into the mounting hole 45 is reduced, the screw member can be easily screwed in, and workability at the time of mounting. To improve. Further, since the screw member at the time of attachment is held at the center of the through portion 46 by a plurality of claw members 47 extending toward the center of the through portion 46, positioning with high accuracy is possible, and the attachment hole In this case, since the screw member is held by the claw member 47, the contact surface between the mounting hole 45 and the screw member at the time of mounting is reduced. 44 It is possible to prevent the material from being scraped, and to prevent the coating of the printed circuit board 44 from peeling off due to the deformation of the printed circuit board 44 caused by the force applied when the screw member is tightened.

  In addition, this invention is not limited to the said Example, A various deformation | transformation implementation is possible within the range of the summary of this invention. For example, the condition in the state immediately before the condensation is not limited to the humidity of 95% as in the above-described embodiment, and can be appropriately changed as long as the value is close to the humidity of 100%. Further, the mounting hole 45 provided in the printed circuit board 44 can be appropriately changed with respect to the shape of the through portion 46, and the number of the claw members 47 can be appropriately changed as shown in FIG.

It is a perspective view of the dehumidifier which shows 1st Example of this invention. It is sectional drawing of a dehumidifier same as the above. FIG. 2 is a partially exploded perspective view showing the internal structure of the dehumidifier. It is explanatory drawing which represented the refrigerating-cycle mechanism typically same as the above. It is a block diagram showing an electrical configuration same as the above. It is a flowchart which shows the operation | movement in the dew condensation prevention control of a dehumidifier. It is a flowchart which shows the operation | movement in the condensation prevention control in another modification of a present Example same as the above. It is a top view which shows the structure of the attachment hole of a printed circuit board same as the above. It is a top view which shows the structure of the modification of the said attachment hole same as the above.

Explanation of symbols

1 Dehumidifier body (main body, predetermined part)
2 Refrigeration cycle mechanism (unit)
3 Compressor (compression unit)
4 condenser (condensing part)
7 Evaporator (evaporator)
16 1st outlet (discharge port)
17 Second outlet (discharge outlet)
37 Display means (display unit)
43 Condensation sensor (detection means)
F1 First air passage (discharge route)
F2 Second air passage (discharge route)

Claims (4)

A main body, and a unit including a compression unit, a condensing unit, and an evaporating unit in a predetermined unit, and a first fluid that passes through the evaporating unit and a second fluid that passes through the condensing unit are separately provided. In a dehumidifier equipped with a function of discharging from the discharge port through the discharge path,
A dehumidifier comprising a detecting means for detecting immediately before condensation in the discharge path of the first fluid.   2. The dehumidifier according to claim 1, wherein the operation is automatically stopped when the detection means is detected.   The dehumidifier according to claim 1, wherein when the detecting means is detected, the compression unit is automatically stopped and air is blown for a predetermined time.   The dehumidifier according to any one of claims 1 to 3, wherein when the detecting means is detected, a message to that effect is displayed on the display unit.

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