TW202344781A - Dehumidifier - Google Patents

Abstract

Provided is a dehumidifier wherein the deterioration of the dehumidification performance can be suppressed by improving the velocity distribution of the airflow through a heat exchanger. This dehumidifier comprises: a housing having a suction port and a blowout port; an air blowing means for generating an airflow from the suction port to the blowout port; an air cleaning means disposed inside the housing; a dehumidifying means having a heat exchanger for removing moisture from the airflow; a main air passage through which air drawn in from the suction port passes through the air cleaning means and reaches the heat exchanger; at least one bypass air passage through which air drawn in from the suction port bypasses the air cleaning means and reaches the heat exchanger; and an opening/closing means capable of opening and closing between a closed position to shield the bypass air passage and an open position to open the bypass air passage. The at least one bypass air passage includes a curved bypass air passage. The curved bypass air passage is formed in an L shape so as to bend or curve toward the main air passage.

Description

Dehumidifier

The present disclosure relates to a dehumidifier.

The dehumidifier disclosed in Patent Document 1 has a main body casing as a frame, and a suction inlet and a blowout outlet formed in the frame. An air path connecting the suction inlet and the blowout outlet is formed in the frame. A heat exchanger constituting the dehumidification device and an air blower that generates an air flow in the air duct are disposed in the air duct, and the air flow from the suction port is dehumidified by passing through the heat exchanger. In addition, a filter is provided in the air duct on the upstream side of the heat exchanger so as not to cover the lower part of the heat exchanger, and a shutter is provided in the lower part of the air duct not covered by the filter to open and close the lower part of the air duct. . When the shutter is opened, a large amount of air flows through the heat exchanger without passing through the filter, resulting in dehumidification operation focusing on dehumidification. On the other hand, when the shutter is closed, most of the airflow passes through the filter and is purified. Since the purified airflow flows through the heat exchanger, it becomes an air purification operation focusing on air purification. [Prior technical literature] [Patent Document]

[Patent Document 1] Japanese Patent Application Laid-Open No. 2004-211913

[Problem to be solved by the invention]

In the dehumidification operation with the shutter open, the air flow passing through the first air duct covered with the filter and the air flow passing through the second air duct not covered with the filter flow through the heat exchanger. Here, both the first air passage and the second air passage are formed to extend in the front-rear direction of the dehumidifier perpendicular to the surface of the heat exchanger. Therefore, the low-speed airflow that passes through the filter and the high-speed airflow that does not pass through the filter circulate through the heat exchanger. As a result, there is a problem that the velocity distribution of the airflow flowing through the heat exchanger becomes poor and the dehumidification performance of the dehumidifier decreases.

The present disclosure is completed to solve the above-mentioned problems. An object of the present disclosure is to provide a dehumidifier that can suppress the degradation of the dehumidification performance of the dehumidifier by improving the velocity distribution of the air flow flowing through the heat exchanger. [Means to solve problems]

A dehumidifier according to the present disclosure includes a frame having a suction inlet and a blowout outlet, an air blower that generates an airflow from the suction inlet to the blowout outlet, an air purifier disposed inside the frame, and a heat exchanger that removes moisture in the airflow. The dehumidification device of the device, the main air duct in which the air sucked in from the suction inlet passes through the air purifying device and reaches the heat exchanger, at least one bypass duct in which the air sucked in from the suction inlet reaches the heat exchanger without passing through the air purifying device, and in An opening and closing device that can be opened and closed between a closed position for shielding the bypass air passage and an open position for opening the bypass air passage. At least one bypass passage includes a curved bypass passage. The curved bypass air passage is formed in an L shape to buckle or bend toward the main air passage. [Effects of the invention]

According to the present invention, the air flow passing through the curved bypass passage merges with the air flow passing through the main air passage before flowing through the heat exchanger. That is, the air flow passing through the curved bypass passage and the air flow passing through the main air passage merge, and the combined air flow flows through the heat exchanger. Therefore, the velocity distribution of the airflow flowing through the heat exchanger can be improved, and as a result, a decrease in the dehumidification performance of the dehumidifier can be suppressed.

Hereinafter, embodiments will be described with reference to the drawings. The same symbols in each figure represent the same or corresponding parts. In addition, in this disclosure, repeated descriptions are appropriately simplified or omitted. In addition, although the present disclosure describes the configuration of a dehumidifier having both a dehumidification function and an air cleaning function as a representative example, the present disclosure is not limited to the dehumidifier. The technical idea according to the present disclosure can also be applied to air conditioners or air purifiers with the same structure. Furthermore, the present disclosure may include any combination of configurations that can be combined among the configurations described in the following embodiments.

Embodiment 1 FIG. 1 is a perspective view of the dehumidifier 1 according to Embodiment 1 when viewed from the front side. FIG. 2 is a perspective view of the dehumidifier 1 seen from the back side. FIG. 3 is a longitudinal sectional view of the dehumidifier 1 taken along line A-A in FIG. 1 . FIG. 4 is a cross-sectional view of the dehumidifier 1 taken along line B-B in FIG. 1 . The A-A line segment and the B-B line segment are set so as to pass through the rotation center of the sirocco fan 32 described below respectively. FIG. 5 is a longitudinal sectional view of the dehumidifier 1 taken along line C-C in FIG. 1 . FIG. 6 is a perspective view of the dehumidifier 1 in a state in which the suction inlet cover 13 and the air purifying filters 45 and 46 described later are removed, as viewed from the back side. FIG. 7 is a schematic diagram for simply explaining the flow of the airflow in a state where the shutter 5, which will be described later, opens the bypass passages 44a and 44b. In addition, in FIG. 6 , illustration of the shutter 5 and the storage space 443 is omitted.

In this embodiment, the front-rear direction of the dehumidifier 1 is the X-axis direction, the width direction is the Y-axis direction or the left-right direction, and the up-and-down direction orthogonal to the X-axis direction and the Y-axis direction is the Z-axis direction. The left side in FIG. 3 represents the front side and the front side, and the right side represents the rear side and the back side. In addition, the left side in FIG. 4 is the left side in the Y-axis direction, and the right side is the right side in the Y-axis direction.

The dehumidifier 1 includes a housing 10 as a frame. The housing 10 has a front housing 10a forming a front portion, and a rear housing 10b forming a rear portion. The front housing 10a and the rear housing 10b are fixed by, for example, screws in a state where the front and rear housings 10a and the rear housing 10b are fitted together, thereby forming a self-supporting box-shaped housing 10.

The housing 10 is formed with a suction port 11 and a blower port 12 . The suction port 11 is an opening for sucking air in from the outside of the housing 10 . The air outlet 12 is an opening for sending air out from the inside of the casing 10 to the outside. The suction port 11 is formed in a suction port cover 13 detachably provided on the rear housing 10b. That is, the plurality of openings provided in the suction inlet cover 13 correspond to the suction inlet 11 . Considering the design of the back side of the dehumidifier 1, the suction inlet 11 and the suction inlet cover 13 are arranged left and right symmetrically with respect to the first center line CL1, which bisects the housing 10 in the width direction and extends in the front and rear directions. . Therefore, the inlets of the bypass passages 44a and 44b described later and the air purifying filters 45 and 46 are also disposed opposite to the left and right with respect to the first center line CL1, thereby improving the design of the back side of the dehumidifier 1. The outline of the suction port 11 is not limited to a rectangular shape and may be circular.

Around the suction inlet 11, the suction inlet cover 13 is provided with an opening 13a smaller than the suction inlet 11 and a hose connection hole 13b. The humidity sensor Sm is arranged inside the rear housing 10b facing the opening 13a. The humidity sensor Sm measures the humidity of the indoor air. A drain hose (not shown) connected to a drain pipe 18b described later is inserted into the hose connection hole 13b, so that drain water can be continuously discharged to the outside of the dehumidifier 1. Moreover, the hose connection hole 13b communicates with the accommodating part 48 inside the rear housing 10. When the dehumidifier 1 is not used, the power cable Cp can be inserted into the hose connection hole 13b and stored in the storage portion 48.

In addition, the suction inlet cover 13 is preferably formed by integrally molding a plastic material into a mesh shape. The suction inlet cover 13 can prevent, for example, large foreign matter flying in the air (paper scraps, fiber scraps, etc.) from entering the inside of the dehumidifier 1 . However, since the pressure loss of the suction inlet cover 13 is small and the air purifying effect on fine particles and the like is poor, it does not constitute an air purifying device to be described later. In this embodiment, the HEPA filter 45 and the activated carbon filter 46 described later correspond to the air purifier.

The blower outlet 12 is formed on the upper surface of the front housing 10a. A louver 14 for adjusting the direction in which air is sent out from the air outlet 12 is provided near the air outlet 12 . As the louver 14, a known louver having a plate-shaped member movable in the up-and-down direction can be used. The shutter 14 is provided with a motor for driving the shutter (not shown). The motor may be a stepper motor, for example. Thereby, the inclination angle of the louver 14 with respect to the air outlet 12 can be changed in several stages or more.

The operation display unit 15 is provided on the upper part of the housing 10 . The operation display unit 15 is equipped with an operation display substrate 24 described later. The operation display unit 15 includes a switch for the user to operate the dehumidifier 1, a display unit for displaying the operation status and operation mode of the dehumidifier 1, a voice notification unit for notifying the user of the status of the dehumidifier 1, and the like. The switches include, for example, an operation switch that turns the operation of the dehumidifier 1 on and off, an operation mode switching switch that switches the operation mode, and the like. As will be described in detail later, the operation mode switch can be used to switch the operation mode between dehumidification operation focusing on dehumidification and air purification operation focusing on air purification. In addition, the control device Cm to be described later may be configured to automatically control switching of the operation mode based on the humidity measured by the humidity sensor Sm.

A base 16 serving as a base plate is provided at the bottom of the housing 10 . Swivel casters 16 a are provided at four corners of the lower surface of the base 16 as wheels for moving the dehumidifier 1 . When the dehumidifier 1 is not moved, the swivel casters 16a do not need to be provided. The base 16 is provided with an electric compressor 21 to be described later, and the water storage tank 17 is stored in a positioned state. The front panel 17a constituting a part of the front housing 10a is fixed to the front surface of the water tank 17. When the water storage tank 17 is full of water, the water storage tank 17 can be pulled forward together with the front panel 17a, and the drained water in the water storage tank 17 can be poured out.

A drainage receiver 18 is arranged above the water storage tank 17 . The drainage blocking member 18a is rotatably mounted on the drainage receiver 18 to temporarily prevent drainage from being discharged to the water storage tank 17, and is usually biased in the water-stop direction by a spring. Then, with the water storage tank 17 stored in the storage position, the drain preventing member 18 a is rotated in a direction opposite to the biasing direction of the spring, so that the drained water can be discharged to the water storage tank 17 . The dehumidification device 2 for removing moisture from the air flow is arranged on the drainage receiver 18 .

As the dehumidification device 2, for example, a heat pump type dehumidification device can be used, but other types of dehumidification devices can also be used. The dehumidification device 2 includes a heat exchanger 20, a compressor 21 that compresses the refrigerant, and a pressure reducing device (not shown) that decompresses the refrigerant.

The heat exchanger 20 has an evaporator 20a, a main condenser 20b as a first condenser, and a sub-condenser 20c as a second condenser. A refrigerant pipe 20d is disposed on the left side of the heat exchanger 20 in the Y-axis direction for circulating the refrigerant compressed by the compressor 21. On the other hand, on the right side of the heat exchanger 20 in the Y-axis direction, a hairpin portion 20e for turning back the refrigerant in the heat exchanger 20 is arranged.

Here, the refrigerant pipe 20d includes refrigerant inlets and outlets respectively provided in the evaporator 20a and the condensers 20b and 20c, and a plurality of pipe parts connected to the electric compressor 21 or the pressure reducing device. These plural piping sections must be arranged to ensure clearance so that they do not come into contact with each other. Therefore, the heat exchanger 20 is arranged bilaterally symmetrically with respect to the second center line CL2, and the second center line CL2 is offset to the right in the Y-axis direction by an arbitrary distance d with respect to the first center line CL1. That is, the second center line CL2 extending in the front-rear direction through the center of the heat exchanger 20 is located on the right side in the Y-axis direction with respect to the first center line CL1 passing through the center of the casing 10 in the left-right direction, that is, offset to the refrigerant The opposite side of the pipe 20d. The left-right distance d, which is the offset amount of the first center line CL1 and the second center line CL2, is set smaller than the left-right width of the bypass passage 44b described later, and is set to 15 mm, for example. By arranging the refrigerant pipes 20d together on the left side in the Y-axis direction, the refrigerant pipes can be configured more compactly than in the case of arranging them separately on the left and right sides in the Y-axis direction.

The evaporator 20a corresponds to the aluminum fin portion of the heat exchanger 20. The evaporator 20a condenses moisture contained in the air passing through the evaporator 20a by heat exchange with the refrigerant circulating from the compressor 21 through the refrigerant pipe 20d, that is, it is configured to cause condensation and dehumidification. As the electric compressor 21, for example, a reciprocating or rotary electric compressor can be used.

The electric compressor 21 is configured to forcibly circulate the refrigerant through the refrigerant pipe 20d connected to the evaporator 20a and the condensers 20b and 20c. That is, the electric compressor 21 supplies the compressed refrigerant to the refrigeration cycle configured by connecting the evaporator 20a, the condensers 20b, 20c, and the like with the refrigerant pipe 20d. The electric compressor 21 is installed on the base 16 directly below the connection point between the refrigerant pipe 20d and the evaporator 20a or the condensers 20b and 20c. Thereby, the length of the refrigerant pipe 20d can be shortened. Furthermore, by arranging the refrigerant pipes 20d together on the left side in the Y-axis direction, the workability of welding the refrigerant pipes 20d during assembly of the dehumidifier 1 can be improved. In addition, if the electric compressor 21 is disposed on the outer peripheral portion of the base 16 on the left side in the Y-axis direction, the large-capacity water storage tank 17 can be used. Therefore, the discharge frequency of water drainage can be reduced, and the user's ease of use can be improved. Furthermore, as the pressure reducing device, for example, an expansion valve or a capillary tube can be used.

The water droplets condensed on the evaporator 20a drip to the drainage receiver 18, and are discharged to the water storage tank 17 through the drainage pipe 18b. The air dehumidified by passing through the evaporator 20a returns to normal temperature in the main condenser 20b and the auxiliary condenser 20c, and then is sent out from the blower outlet 12 via the vortex space 35 described below. Alternatively, a drain hose (not shown) may be directly connected to the drain pipe 18b. In this case, continuous drainage can be achieved by inserting the drainage hose into the hose connection hole 13b and pulling it out of the housing 10 .

The air blower 3 is arranged in front of the heat exchanger 20 . The air blower 3 includes a fan motor 31 and a sirocco fan 32 . The Sirocco fan 32 is rotatably arranged in the vortex space 35 divided by the casing 33 and the partition 34 . The partition plate 34 is provided with a circular opening as a trumpet-shaped hole 34a so that the air passing through the condenser 20c can be smoothly sucked. The air sucked in from the horn-shaped hole 34 a by the rotation of the sirocco fan 32 is blown out from the blowout port 12 located above the casing 33 , and the air supply direction is changed by the louver 14 .

A heat exchanger holder 22 that holds the heat exchanger 20 and also functions as a power supply substrate housing is disposed above the heat exchanger 20 . The power supply substrate unit 23 is provided on the heat exchanger holder 22 . The power supply board unit 23 has a power supply board and a control board (not shown). In this embodiment, the power supply substrate unit 23 and the operation display substrate 24 constitute the control device Cm. The control device Cm controls the driving of the motor for the shutter 14, the electric compressor 21, the fan motor 31, a stepping motor for shutter driving described below, and the like. In addition to the display on the operation display unit 15, the control device Cm also controls notification by voice.

The air path forming frame 41 is installed on the rear housing 10b so as to face the suction inlet 11 . Inside the air path forming frame 41, two air path dividing plates 42 that are long in the up-down direction are arranged with a gap in the left-right direction. The intervals between the air path partition plates 42 are determined in accordance with the width of the air purifying filter described below. The two air path dividing plates 42 divide the interior of the air path forming frame 41 into a main air path 43 and bypass air paths 44a and 44b to be described later. That is, the main air passage 43 is divided into the main air passage 43 at the center of the air passage forming frame 41 in the left-right direction by the two air passage dividing plates 42 and the upper and lower walls of the air passage forming frame 41 . The two bypass air passages 44a and 44b are respectively divided into left and right sides adjacent to the main air passage 43 by each air passage dividing plate 42 and the upper wall, lower wall and side wall of the air passage forming frame 41. The bypass passage 44a on the left side in the Y-axis direction corresponds to the first bypass passage, and the bypass passage 44b on the right side in the Y-axis direction corresponds to the second bypass passage. In this way, the main air duct 43 and the bypass air ducts 44a and 44b separated by the air duct partition plate 42 are adjacent to each other on the left and right sides, so that the main air duct 43 and the bypass air ducts 44a and 44b can be closely configured, and the dehumidifier 1 Can be miniaturized. The heights of the air path forming frame 41 and the bypass air paths 44a and 44b are set equal to the height of the portion of the suction port cover 13 where the suction port 11 is formed. Thereby, the bypass passages 44a and 44b are disposed facing each other across the entire area in the height direction of the portion forming the suction port 11.

The bypass passage 44a corresponds to a curved bypass passage. The curved bypass air passage 44a is formed to be bent or curved toward the right side in the Y-axis direction toward the main air passage 43. That is, in cross section, the curved bypass passage 44a has a straight portion 441 extending in the front-rear direction and a bent portion 442 bent or bent from the front end of the straight portion 441, and is configured so that the bent portion 442 merges with the main air passage 43 . Thereby, the airflow Ab1 passing through the bent portion 442 of the curved bypass air passage 44a flows to the right side in the Y-axis direction, and merges with the airflow Af passing through the main air passage 43. The merged airflow flows through the grid portion 47 to be described later and flows through the heat exchanger. 20.

The bypass passage 44b is composed of a straight portion 441. The airflow Ab2 that has passed through the second bypass passage 44b flows through the grating portion 47 described below and flows through the right end portion of the heat exchanger 20 in the Y-axis direction. At this time, the airflow Ab2 may merge with the airflow Af that has passed through the air purifying filters 45 and 46 on the upstream side of the grid portion 47 . In addition, in this embodiment, two bypass air passages 44a and 44b are arranged on the left and right sides of the main air passage 43. However, the present invention can also be applied when at least one bypass air passage 44a is arranged.

An air purifying filter as an air purifying device is detachably arranged in the main air path 43 . The air purifying filter includes, for example, a HEPA filter 45 and a deodorizing filter 46 . These filters 45 and 46 are also arranged bilaterally symmetrically with respect to the first center line CL1 like the suction port 11 . The HEPA filter 45 is an air filter that has a particle capture rate of 99.97% or more for particles with a particle diameter of 0.3 μm. Instead of the HEPA filter 45, a ULPA filter having a particle capture rate of 99.99% or more for particles with a particle size of 0.15 μm can be used. As the deodorizing filter 46, for example, an activated carbon filter can be used.

On the downstream side of the deodorizing filter 46, a grid portion 47 serving as a rectifying member is arranged at intervals. The lattice portion 47 has a plurality of openings 47a as ventilation windows provided in a lattice shape. On the downstream side of the grid portion 47, the evaporator 20a is arranged at intervals. It is preferable that the grating part 47 has the same cross-sectional area as that of the evaporator 20a. By providing the grating portion 47, the user can be prevented from touching the evaporator 20a when replacing the air purifying filters 45 and 46.

The bypass passages 44a and 44b are provided with a shutter 5 as an opening and closing device capable of opening and closing the bypass passages 44a and 44b. The shutter 5 has a plate-shaped shielding wall 51 that is long in the vertical direction, and an upper plate 52 and a lower plate 53 that are fan-shaped in plan view and are respectively provided at the upper end and the lower end of the shielding wall 51 . An upper rotation shaft (not shown) is provided on the upper surface of the upper plate 52 , and a lower rotation shaft 53 a is provided on the lower surface of the lower plate 53 . The upper rotating shaft and the lower rotating shaft 53a are respectively inserted and fitted into through holes (not shown), and the through holes serve as bearings respectively provided on the upper wall and the lower wall of the air path forming frame 41. Thereby, the shutter 5 is rotatably supported around the upper rotation shaft and the lower rotation shaft 53a. The stepper motor (not shown) is directly installed on the upper rotating shaft. The stepper motor is driven and controlled to control the rotational position of the shutter 5 . Specifically, in the air purification operation mode described later, as shown in solid lines in FIG. 4 , the shutter 5 blocks the bypass passages 44a and 44b and is rotated to block the flow of airflow in the bypass passages 44a and 44b. closed position. On the other hand, in the dehumidification operation mode described later, as shown in dotted lines in FIG. 4 , the shutter 5 opens the bypass passages 44a and 44b and rotates to an opening position that allows the airflow of the bypass passages 44a and 44b. In addition, the shutter 5 can also be rotated to an intermediate position between the closed position and the open position. That is, by controlling the opening of the shutter 5, the openings of the bypass passages 44a and 44b can be adjusted. The bypass passages 44a and 44b are each formed with a storage space 443 that bulges outward in the left and right directions. By storing the shielding wall 51 in the storage space 443 when the shutter 5 is rotated to the open position, the pressure loss in the bypass passages 44a and 44b during the dehumidification operation can be reduced.

In this embodiment, the power supply substrate unit 23 and the operation display substrate 24 constitute the control device Cm. The power supply board unit 23 functions as a main control unit. Although not shown in the figure, the power supply substrate unit 23 has a power supply section to which the power supply cable Cp is connected, a CPU, a drive circuit, and a storage section.

The dehumidifier 1 includes a wireless communication module as a wireless communication unit inside the housing 10 . The wireless communication unit is configured to enable wireless communication with local network equipment such as a wireless router (not shown) installed in a home or company where the dehumidifier 1 is installed. The wireless communication unit can be connected to an Internet connection (illustration omitted) via a local network device. In this case, the wireless communication unit can exchange information with an information processing terminal (not shown) such as a smartphone or other communication equipment at a remote location through an Internet connection. In addition, the local network device may be a command device that controls the total power usage in a home or company, or may be an integrated management device that collects and connects information on multiple electrical devices. It is also sometimes called a storage device. Take some.

Next, the operation of the dehumidifier 1 will be described. When the dehumidification operation mode is selected by the user's switching operation of the operation mode switch, the control device Cm drives the shutter motor to open the shutter 14 to a specified angle. The angles of the blinds 14 may be specified, for example, at 45 degrees, 60 degrees, and 75 degrees.

Next, the control device Cm drives the motor to rotate the shutter 5 to the open position. As a result, the bypass passages 44a and 44b are opened. The control device Cm drives the fan motor 31 through rotation, so that the Sirocco fan 32 rotates at a preset rotation speed. This generates an air flow from the suction port 11 to the blower outlet 12 via the main air duct 43, the bypass ducts 44a, 44b, and the heat exchanger 20. Then, the refrigerant is compressed by the electric compressor 21 via the motor that drives the electric compressor 21, and the compressed refrigerant circulates through the heat exchanger 20 through the refrigerant pipe 20d.

When the airflow flowing through the evaporator 20 a passes through the evaporator 20 , it is condensed by heat exchange with the refrigerant circulating from the electric compressor 21 and is dehumidified. After the dehumidified air returns to normal temperature in the condensers 20b and 20c, it is sent out from the blower outlet 12 via the vortex space 35. At this time, corresponding to the angle of the blinds 14, the air is sent upward to generate a circulating air flow in the room, which can dehumidify the room or direct the wind to dry the washed clothes. The water droplets condensed in the evaporator 20a drip down to the drainage receiver 18 by gravity, and are discharged to the water storage tank 17 through the drainage pipe 18b. In addition, in a state where the drain hose is attached to the drain pipe 18b, the drain water can be continuously discharged to the outside of the housing 10 through the drain hose.

The control device Cm determines whether the humidity measured by the humidity sensor Sm is 50% or more. When the humidity is 50% or more, the motor of the electric compressor 21 is continued to be driven, and the dehumidification operation is continued.

On the other hand, when the humidity is less than 50%, the drive of the motor of the electric compressor 21 is stopped. At the same time, the motor is driven to rotate the shutter 5 to the closed position to perform air purification operation. During the purification operation, almost all the air sucked in from the suction port 11 passes through the air purification filters 45 and 46 of the main air passage 43 and is purified. Therefore, the air sent out from the air outlet 12 is clean air.

According to this embodiment, during the dehumidification operation, the air flow Ab1 passing through the curved bypass passage 44a merges with the air flow Af passing through the main air passage 43 before flowing through the heat exchanger 20. That is, the air flow Ab1 passing through the curved bypass duct 44a flows to the right side in the Y-axis direction, merges with the air flow Af passing through the main air duct 43, and the merged air flow flows through the heat exchanger 20. Therefore, the velocity distribution of the airflow flowing through the heat exchanger 20 can be improved, and as a result, a decrease in the dehumidification performance of the dehumidifier 1 can be suppressed.

Furthermore, according to this embodiment, during the dehumidification operation, the airflow passing through the linear portion 441 of the bypass passage 44b flows toward the right end of the heat exchanger 20 in the Y-axis direction. Therefore, even when the heat exchanger 20 is arranged offset to the right side in the Y-axis direction with respect to the center line CL1, the velocity distribution of the airflow flowing through the heat exchanger 20 can be improved. Thereby, the reduction in the dehumidification performance of the dehumidifier 1 can be further suppressed. In addition, since the suction inlet cover 13 and the suction inlet 11 are arranged left and right symmetrically with respect to the first center line CL1, the design of the back side of the dehumidifier 1 is not impaired. In this case, it is preferable to arrange the sirocco fan 32 symmetrically with respect to the second center line CL2 like the heat exchanger 20 .

1:Dehumidifier 2: Dehumidification device 3: Air supply device 5:Shutter 10: Shell/frame 10a:Front shell 10b:Rear shell 11:Suction port 12:Air outlet 13:Suction inlet cover 13a: Open your mouth 13b:Hose connection hole 14: blinds 15: Operation display part 16: base 16a: Swivel caster 17:Water storage tank 17a:Front panel 18: Drainage receiver 18a:Drainage stopper 18b: Drainage pipe 20:Heat exchanger 20a: Evaporator 20b: Main condenser/condenser 20c: Sub-condenser/condenser 20d:Refrigerant piping 20e: Hairpin part 21:Compressor/electric compressor 22:Heat exchanger holder 23:Power supply base unit 24: Operation display substrate 31:Fan motor 32: Sirocco Fan 33: Shell 34:Partition 34a: Horn shaped hole 35: Vortex space 41: Wind path forming frame 42: Air duct partition board 43:Main wind path 44a: Bypass ventilation/curved bypass ventilation 44b: Bypass ventilation path/Second bypass ventilation path 45:HEPA filter/air purifier 46: Deodorizing filter/air purifier 47:Grid Department 47a: Open your mouth 48: Storage Department 51:Shielding wall 52:On the board 53: Lower board 53a: Lower side rotation shaft 441: Line Department 442:Bending part 443:Storage space Ab1,Ab2,Af: air flow CL1: first center line CL2: Second center line Cm: control device Cp: power cable d: distance Sm: Humidity sensor

FIG. 1 is a perspective view of the dehumidifier according to Embodiment 1 when viewed from the front side. Fig. 2 is a perspective view of the dehumidifier according to Embodiment 1 when viewed from the back side. FIG. 3 is a longitudinal sectional view of the dehumidifier according to Embodiment 1 taken along line A-A in FIG. 1 . FIG. 4 is a cross-sectional view of the dehumidifier according to Embodiment 1 taken along line B-B in FIG. 1 . FIG. 5 is a longitudinal sectional view of the dehumidifier according to Embodiment 1 taken along line C-C in FIG. 1 . 6 is a perspective view of the dehumidifier according to Embodiment 1 with the suction inlet cover and the air purifying filter removed, as viewed from the back side. FIG. 7 is a schematic diagram for simply explaining the flow of airflow in a state where the shutter opens the bypass passage.

1:Dehumidifier

2: Dehumidification device

3: Air supply device

5:Shutter

13:Suction inlet cover

20:Heat exchanger

20a: Evaporator

20b: Main condenser/condenser

20c: Sub-condenser/condenser

20d:Refrigerant piping

20e: Hairpin part

21:Compressor/electric compressor

31:Fan motor

32: Sirocco Fan

33: Shell

34:Partition

34a: Horn shaped hole

35: Vortex space

41: Wind path forming frame

42: Air duct partition board

43:Main wind path

44a: Bypass ventilation/curved bypass ventilation

44b: Bypass ventilation path/Second bypass ventilation path

45:HEPA filter/air purifier

46: Deodorizing filter/air purifier

47:Grid Department

51:Shielding wall

53: Lower board

53a: Lower side rotation shaft

441: Line Department

442:Bending part

443:Storage space

CL1: first center line

CL2: Second center line

d: distance

Claims (3)

A dehumidifier including: The frame has a suction inlet and a blowout outlet; An air supply device generates air flow from the aforementioned suction port to the aforementioned blowing port; An air purifying device is arranged inside the aforementioned frame; A dehumidification device having a heat exchanger for removing moisture in the aforementioned air flow; In the main air path, the air sucked in from the aforementioned suction port passes through the aforementioned air purifying device and reaches the aforementioned heat exchanger; At least one bypass passage, the air sucked in from the aforementioned suction inlet reaches the aforementioned heat exchanger without passing through the aforementioned air purifying device; and The opening and closing device can be opened and closed between a closed position that blocks the aforementioned bypass air passage and an open position that opens the aforementioned bypass air passage, Wherein the aforementioned at least one bypass passage includes a curved bypass passage, The curved bypass air passage is formed in an L shape so as to buckle or bend toward the aforementioned main air passage, The dehumidification device has a refrigerant pipe provided on a left-right side of the heat exchanger in the width direction, The bypass air passage has a first bypass air passage formed on one side of the main air passage in the left-right direction, and a second bypass air passage formed on the other side of the main air passage in the left-right direction, Wherein the aforementioned first bypass passage is the aforementioned curved bypass passage, The second bypass passage is constituted by a straight portion extending in the front-rear direction. The dehumidifier according to claim 1, wherein the curved bypass passage has a straight portion extending in the front-rear direction and a bent portion bent or bent from a front end of the straight portion, and the bent portion merges with the main air passage. The dehumidifier according to claim 1 or 2, wherein the aforementioned dehumidification device has an electric compressor that compresses refrigerant, The electric compressor is disposed directly below the connection point between the refrigerant pipe and the heat exchanger.