CN111886456B

CN111886456B - Fan blade, air conditioner and dehumidifier

Info

Publication number: CN111886456B
Application number: CN201880091143.4A
Authority: CN
Inventors: 今关谦一; 大西康之
Original assignee: Sharp Corp
Current assignee: Sharp Corp
Priority date: 2018-03-19
Filing date: 2018-09-03
Publication date: 2022-10-21
Anticipated expiration: 2038-09-03
Also published as: TWI810248B; JPWO2019180998A1; WO2019180998A1; TW201938964A; JP7150822B2; CN111886456A

Abstract

The blowing direction of the wind desired by the user is obtained with a small rotation angle. The fan blade of the invention is an upper and lower fan blade (14) which is rotatably supported by a shaft above a blow-out port (15) of a dehumidifier (101) and divides air blown out from the blow-out port (15) into front and rear, wherein the center side of the two end parts of the upper and lower fan blade (14) in the direction of blowing out air is thicker than the center side of the two end parts of the upper and lower fan blade (14) in the face opposite to the blow-out port (15).

Description

Fan blade, air conditioner and dehumidifier

Technical Field

The invention relates to a fan blade (louver) for controlling wind direction, an air conditioner comprising the fan blade and a dehumidifier.

Background

Conventionally, a dehumidifier for dehumidifying indoor air has been known as one type of air conditioner. In recent years, a dehumidifier is known which has a clothes drying function of blowing dry wind to washed clothes to dry the clothes, in addition to a dehumidifying function of dehumidifying air in a room.

Incidentally, in order to efficiently operate the dehumidifying function and the clothes drying function, respectively, it is necessary to change the direction of the wind to be blown out for drying. In the dehumidifying function, since it is necessary to blow dry air into the entire room, it is necessary to blow dry air toward the wall of the room, and in the clothes drying function, it is necessary to blow dry air in a direction in which clothes to be dried are hung.

In general, when indoor dehumidification is considered, dry air is blown toward a wall side, and when clothes are dried, dry air is blown toward the clothes. That is, when the dehumidifier is installed on a wall side in a room, the front side of the dehumidifier becomes a blowing direction of the air during the clothes drying function, and the rear side of the dehumidifier becomes a blowing direction of the air during the dehumidifying function. The switching of the blowing direction of the air is performed by a single plate-shaped fan blade provided with an outlet for the dried air (for example, a dehumidifier disclosed in patent document 1 and an air conditioner disclosed in patent document 2).

Documents of the prior art

Patent document

Patent document 1: japanese patent laid-open publication No. 2002-267203 (published 9/18/2002) "

Patent document 2: japanese patent application laid-open No. 2002-333185 (published 11/22/2002) "

Disclosure of Invention

Technical problem to be solved by the invention

Incidentally, since the fan blades used in the conventional dehumidifier are plate-shaped members having a substantially uniform wall thickness, the blowing angle of the wind (the inclination angle with respect to the ground) is equal to the rotation angle of the fan blades. For example, if the blades are rotated by 90 ° with respect to the ground, the blowing angle of the wind is also 90 ° with respect to the ground.

In the case where the wind direction is controlled by one flat-plate-shaped blade as described above, various problems occur because the blade is rotated in the same range as the wind direction.

For example, in order for the fan blades to enter the air passage when rotating in accordance with the wind direction, it is necessary to provide a structure near the air passage so as not to contact the fan blades. In addition, when the fan blades are used in combination with left and right fan blades for dividing the air discharged from the air passage into left and right directions, a large space is required.

Therefore, in the conventional fan blade, in order to set the blowing direction of the wind desired by the user, it is necessary to rotate the fan blade in the same direction as the desired blowing direction, and therefore, the space near the blowing port including the fan blade has to be made wide.

One aspect of the present invention is directed to a fan blade, an air conditioner including the fan blade, and a dehumidifier that achieve a blowing direction of wind desired by a user at a small rotation angle.

Means for solving the problems

In order to solve the above problems, a fan blade according to an aspect of the present invention is pivotally supported above an air outlet of an air blower so as to be rotatable, thereby dividing air blown out from the air outlet into front and rear portions; wherein a central side of a surface of the fan blade facing the air outlet is thicker than both end portions of the fan blade in the direction in which the air is blown.

Effects of the invention

According to an aspect of the present invention, the blowing direction of the wind desired by the user can be obtained at a small rotation angle.

Drawings

Fig. 1 is an external perspective view showing an external appearance of a dehumidifier according to embodiment 1 of the present invention.

Fig. 2 is a vertical sectional view showing an internal structure of the dehumidifier.

Fig. 3 is an external perspective view showing each operation mode of the dehumidifier shown in fig. 1, wherein (a) is a view showing a rotating state of the fan blade in the dehumidification mode, and (b) is a view showing a rotating state of the fan blade in the clothes drying mode.

Fig. 4 is an enlarged view showing a swirling state of the fan blade shown in fig. 3, wherein (a) is an enlarged view in a dehumidification mode, and (b) is an enlarged view in a clothes drying mode.

Fig. 5 is a diagram illustrating air flows in a dehumidification mode of the dehumidifier shown in fig. 1.

Fig. 6 is a view for explaining an air flow in the clothes drying mode of the dehumidifier shown in fig. 1.

Fig. 7 shows the state of the vanes in each operation mode of the dehumidifier shown in fig. 1, wherein (a) is a diagram showing the operation stop time, (b) is a diagram showing the clothes drying mode, and (c) is a diagram showing the state of the vanes in the dehumidification mode.

Fig. 8 is an AA-line arrow sectional view showing a fan blade included in the dehumidifier shown in fig. 1, wherein (a) is a plan view and (b) is a plan view.

Fig. 9 is a diagram for explaining a blowing range of the dehumidifier shown in fig. 1.

Fig. 10 is a diagram showing various shapes of fan blades included in the dehumidifier according to embodiment 2 of the present invention.

Fig. 11 is a plan view showing an example of an operation panel included in the dehumidifier according to embodiment 3 of the present invention.

Fig. 12 is a block diagram of a controller included in the dehumidifier including the operation panel shown in fig. 11.

Detailed Description

[ embodiment 1]

Hereinafter, an embodiment of the present invention will be described in detail. In the present embodiment, a dehumidifier will be described as an example of an air conditioner.

(overview of dehumidifier)

Fig. 1 is a perspective view showing an external appearance of a dehumidifier 101 according to the present embodiment. Fig. 2 is a vertical sectional view showing an internal configuration of the dehumidifier 101 shown in fig. 1. In the following description, the left side of the dehumidifier 101 shown in fig. 1 is referred to as a front side (front), and the right side is referred to as a rear side (rear).

The dehumidifier 101 is a device having a dehumidifying function (dehumidifying operation mode) for sucking ambient air and removing moisture contained in the air, and a clothes drying function (clothes drying mode) for blowing dehumidified air (wind) to clothes.

The dehumidifier 101 includes a casing 1 as an exterior member as shown in fig. 1, and includes a blower (blower) 2, a dehumidifier 5, and a controller 30 (fig. 12) inside the casing 1 as shown in fig. 2.

Returning to fig. 1, the case 1 includes a housing 11, a front cover 12, and a back cover 13. The housing 11 is a box-shaped member including a space therein, and may be formed using, for example, sheet metal, synthetic resin, or the like, but is not limited thereto. Openings, not shown, are formed in the front and rear surfaces of the housing 11, the front cover 12 is detachably attached to the opening in the front surface, and the rear cover 13 is detachably attached to the opening in the rear surface.

The back cover 13 is provided with an intake port 16, and the housing 11 is provided with an outlet port 15 on the upper surface thereof. The air sucked through the suction port 16 is dehumidified and blown out through the blow-out port 15. The air outlet 15 is provided with vertical vanes 14 for adjusting the vertical direction of the wind direction of the blown-out wind. In addition, left and right blades 19 for adjusting the left and right directions of the wind direction of the blown-out wind are provided in the air outlet 15. The upper and lower blades 14 are pivotally supported above the air outlet 15 so as to be rotatable, and divide the air blown out from the air outlet 15 into the front and rear directions. Here, the front cover 12 side of the dehumidifier 101 is defined as the front side, and the back cover 13 side is defined as the rear side.

Further, in the housing 11, an operation portion 18 is provided on the back side in the vicinity of the air outlet 15.

In the dehumidifier 101, an air cleaning filter (not shown) may be disposed in an opening on the back surface of the casing 11 inside the back cover 13. In this case, the air passing through the suction port 16 provided in the back cover 13 is sucked into the dehumidifying part 5 through the air cleaning filter. The air cleaning filter is a filter for collecting foreign matters such as fine dust and dirt from air passing therethrough. The air cleaning filter includes, but is not limited to, a HEPA filter (High Efficiency Particulate air filter) in which a nonwoven fabric is formed into a paper shape.

The blower 2 includes a fan 21, a fan case 22, a fan motor 23, and a duct 24. The fan 21 is a fan that discharges air in a centrifugal direction, and rotates to draw air from a central portion and generate an air flow toward the outer periphery. In addition, a turbofan or a high-pressure axial fan may be used instead of the fan 21.

The fan 21 is rotatably disposed inside the fan case 22. The fan case 22 is connected to a duct (air flow path) 24, and includes a structure capable of blowing out an airflow generated in the circumferential direction of the fan 21 toward the duct 24.

The fan 24 is mounted on an output shaft of the fan motor 23. The fan motor 23 is fixed to the fan case 22, and the fan 21 is rotated by the rotation of the fan motor 23. The duct 24 guides the airflow generated by the rotation of the fan 21 to the air outlet 15.

An ion generator may be disposed in the tube 24 to make the gas flow contain ions. This situationThe ion generator generates ions by discharging in the atmosphere. The ion generator is preferably a generator for generating positive ions H in which m and n are each an arbitrary natural number ⁺ (H ₂ O) m, anion O ^2- (H ₂ O) n. In this case, the positive and negative ions are attached to the surface of airborne bacteria and viruses to cause a reaction, and active species OH hydroxyl groups (· OH) and hydrogen peroxide (H) can be generated on the surface ₂ O ₂ ) Thereby exhibiting the effect of sterilization and the like.

The dehumidification section 5 includes an evaporator and a condenser, and includes a dehumidification water tank 51 storing dehumidified water. The dehumidifying part 5 cools the passing air flow to condense moisture contained in the air, thereby removing (dehumidifying) the moisture contained in the air. The dehumidification portion 5 includes a refrigeration cycle device that circulates a refrigerant and cools air using a phase change of the refrigerant. The refrigeration cycle apparatus includes a compressor, an expander, and the like, which are not shown, in addition to the evaporator and the condenser.

The evaporator and the condenser included in the dehumidification portion 5 are heat exchangers, and examples thereof include, but are not limited to, heat exchangers using fins and tubes. The dehumidification portion 5 is disposed near the blower 2 on the back side. As the fan 2 is driven, air is sucked into the fan case 22 and sent out from the duct 24, and an air flow is generated that flows through gaps between the evaporator and the fins of the condenser in the dehumidification section 5.

The evaporator cools the gas stream, i.e., air, and the condenser warms the gas stream. Therefore, in the dehumidification section 5, an evaporator is disposed on the upstream side of the airflow to cool the airflow, and moisture in the air is condensed in the evaporator. The condenser heats the air flow cooled by the evaporator by heat exchange with the high-temperature refrigerant, and the air flow is heated to the same temperature as or higher than the temperature at which the air flow flows into the evaporator. From the above, in the dehumidification portion 5, the evaporator is disposed upstream of the condenser in the air flow.

The dehumidification water tank 51 is a water tank that stores water (wastewater) dehumidified by the dehumidification section 5, and is capable of detecting the amount or level of accumulated wastewater. In the dehumidifier 101, when a certain amount of wastewater is accumulated in the dehumidification water tank 51, a warning is issued and at least the dehumidification section 5 of the dehumidifier 101 is stopped. The user takes out the dehumidification water tank 51 in response to the warning, and the accumulated waste water is drained, thereby providing a reusable dehumidification function. In the present embodiment, dehumidification using a refrigeration cycle is performed, and dehumidification is performed by a so-called compressor method, but the present invention is not limited to this, and dehumidification using a desiccant or the like that adsorbs moisture in the air may be performed, so-called desiccant method may be used for dehumidification, or dehumidification may be performed by a hybrid method combining a compressor method and a desiccant method, or dehumidification may be performed by another dehumidification method.

The controller 30 controls each part of the dehumidifier 101 included in the casing 1. Although details will be described later, the controller 30 generates a control signal in accordance with the content of the user operation received by the operation unit 18, and controls the operation of each unit by the generated control signal.

The arrows shown in fig. 2 indicate the flow of air in the dehumidifier 101. That is, the dehumidifier 101 configured as described above takes in air from the inlet 16 by driving the blower 2, and passes through the dehumidifying unit 5. The air passing through the dehumidification section 5 is sucked by the fan 21 and blown out from the air outlet 15 through the duct 24. The dehumidifier 101 includes two operation modes, i.e., a dehumidification mode for dehumidifying the entire room and a clothes drying mode for drying clothes hung in the room after washing. Here, the upper and lower blades 14 included in the dehumidifier 101 are pivotally supported above the air outlet 15 so as to be rotatable, as described above, and thereby divide the air blown out from the air outlet 15 into front and rear. That is, upper and lower blades 14 rotate so as to blow dry air in a direction suitable for each operation mode. Each operation mode will be described below.

(dehumidification mode)

Fig. 3 (a) shows the rotating state of the upper and lower blades 14 in the dehumidification mode, and (b) shows the rotating state of the upper and lower blades 14 in the clothes drying mode. Fig. 4 (a) is an enlarged view showing the rotation state of the upper and lower blades 14 in the dehumidification mode, and (b) is an enlarged view showing the rotation state of the upper and lower blades 14 in the clothes drying mode. Fig. 5 shows the airflow in the dehumidification mode.

As shown in fig. 5 (a), when the dehumidifier 101 is disposed at a wall side of a room, the air flow when dehumidifying the entire room is preferably along the wall, ceiling, or floor. That is, the air blown out from the dehumidifier 101 flows along the wall (1), the ceiling (2), the wall (3), and the floor (4). In this case, as shown in fig. 5 (b), the dehumidifier 5 adjusts the upper and lower blades 14 to open the back cover 13 side of the air outlet 15 of the dehumidifier 101, and when the air is blown out toward the rear, that is, toward the wall, the air flows along the wall side (1), the ceiling (2), the wall side (3), and the floor (4) due to the coanda effect.

Therefore, when the back cover 13 side of the dehumidifier 101 is set to be the wall side of the room, the upper and lower blades 14 are rotated so as to blow air toward the back cover 13 side in the dehumidification mode, as shown in fig. 3 (a) and 4 (a). That is, the upper and lower blades 14 are rotated toward the front cover 12 side so that the back cover 13 side of the air outlet 15 is open.

At this time, the angle of the blown air is preferably 20 ° with respect to the ground. This state is referred to as tilting the upper and lower blades 14 backward by 20 °. However, this angle is not limited to 20 °, and may be changed according to the shape and size of the room if the coanda effect can be obtained.

Further, as shown in fig. 5 (c), when the left and right blades 19 provided in the air outlet 15 are adjusted to blow the air in the left-right direction, the air blown out from the dehumidifier 101 spreads in the left-right direction, and therefore, the dehumidified air easily spreads over the entire room. That is, dehumidification is performed efficiently.

In this way, the upper and lower blades 14 blow air toward the wall on the back side with a 20 ° backward flow, and the dehumidified air along the wall and the ceiling is generated by the coanda effect, whereby dehumidification can be performed uniformly and energy-efficiently to each corner of the room while avoiding the living space of people.

Further, since the wind blown out from the dehumidifier 101 contains ions, the effect of suppressing mold adhesion to walls and ceilings, which has been insufficient for the conventional dehumidifier, can be obtained by the dehumidified air along the window, and the dehumidified air can be handled without moving the dehumidifier even in the winter.

Further, in the rear blowing, since there is an advantage that the air flow inclined backward by 20 ° is made possible in a state where the upper and lower blades 14 are not inclined so much, and the display portion in front of the product is not covered, there is an effect that the degree of freedom in product design is increased.

(clothes drying mode)

Fig. 6 shows the airflow in the dehumidification mode.

As shown in fig. 6, in the case where the dehumidifier 101 is disposed on the wall side of the room, it is preferable that the washed laundry 102 hung in the center of the room be directly blown with the wind dehumidified by the dehumidifier 101. In this case, as shown in fig. 6, the dehumidifier 101 opens the front cover 12 side of the outlet 15 of the dehumidifier 101 by adjusting the upper and lower blades 14, and blows air toward the front, that is, the clothes 102.

Therefore, when the back cover 13 side of the dehumidifier 101 is set to be the wall side of the room, the upper and lower blades 14 are rotated to blow air toward the front cover 12 side in the clothes drying mode, as shown in fig. 3 (b) and 4 (b). That is, the upper and lower blades 14 are rotated toward the back cover 13 so that the opening of the front cover 12 side of the air outlet 15 is opened.

For drying the laundry 102 efficiently, it is necessary to blow the laundry 102 with wind directly. Therefore, the upper and lower blades 14 are adjusted up and down in such a manner that the wind blows on the laundry 102. At this time, the left and right blades 19 are adjusted so that the blown air does not spread.

As described above, the dehumidification mode and the clothes drying mode can be switched by changing the rotation state of the upper and lower blades 14 without changing the installation position of the room of the dehumidifier 101.

(shape of the upper and lower blades 14)

Fig. 7 (a) and (b) show an example of the shape of the upper and lower blades 14. That is, the upper and lower blades 14 are plate-like members having a substantially triangular cross section as shown in fig. 7 (a) and (b). In the cross-sectional shape of fig. 7 (b), the length of three faces (face 14a, face 14b, face 14 c) is 14a > 14b > 14c. Here, when the angle between the

surfaces

14a and 14b is θ 1 and the angle between the

surfaces

14a and 14c is θ 2, θ 1 > θ 2 are concerned. The upper and lower blades 14 are provided on the dehumidifier 101 so that the surface 14a is an upper surface of the dehumidifier 101, the surface 14b is a front cover 12 side, and the surface 14c is a back cover 13 side. The upper and lower blades 14 have a thin wall on both front and rear end sides (on the

ends

14e and 14f sides) including the blowing direction of the wind, a thick wall on the center side, and a maximum thick wall portion 14g having the largest thickness on the center side. The surfaces (

surfaces

14b and 14 c) facing the air outlet 15 of the vertical fan blades 14 are inclined planes (inclined surfaces) from the front cover 12 side and the back cover 13 side toward the maximum thickness portion 14g (corresponding to a length portion of a perpendicular line from the apex 14d of the triangle to the surface 14 a).

Since the upper and lower blades 14 have a relationship of θ 1 > θ 2, the position of the vertex 14d of the triangle, which is the intersection between the surface 14b and the surface 14c, is shifted toward the surface 14 b. In the present embodiment, the apex 14d of the triangle is offset toward the front cover 12.

The cross-sectional shape of the upper and lower blades 14 is not limited to the triangular shape described above. That is, in the surfaces (the

surfaces

14b and 14 c) facing the air outlet 15 of the upper and lower blades 14, the surfaces may be thicker at the center side than at both ends (the

end portions

14e and 14 f) in the air outlet direction of the upper and lower blades 14. Specifically, the largest thick wall portion 14g having the largest thickness is formed on the surface (surface 14b, surface 14 c) facing the air outlet 15. Therefore, the surface 14b is an inclined surface inclined from the end portion 14e toward the apex 14d of the maximum thickness portion 14g, and the surface 14c is an inclined surface inclined from the end portion 14f toward the apex 14d of the maximum thickness portion 14g. Further, a vertex 14d, which is an intersection portion of the surfaces (the

surfaces

14b and 14 c) opposed to the air outlet 15, is offset toward the end portion 14 e. The maximum thickness portion 14g is located on the side of the end portion 14e, which is one end portion, with respect to an intermediate position O of an imaginary line X connecting the

end portions

14e and 14f with a straight line. The direction in which the apex 14d is displaced and the direction in which the intermediate position O is displaced may be the end portion 14f side depending on the use of the upper and lower blades 14. If the shape satisfies such a condition, the upper and lower blades 14 may have any cross-sectional shape. Other shapes of the upper and lower blades 14 will be described in embodiment 2 described later.

Here, when the end angle θ of the fan blade is large, the air is blown further upward with a small rotation, and therefore, the air can be blown to the entire clothes disposed above the vicinity of the blower, for example. That is, suitable for laundry drying. Further, the longer the distance between the inclined surfaces of the blades is, the longer the time and distance of the wind from the air outlet along the inclined surfaces are, and therefore, the blowing direction of the wind becomes more stable. That is, since the air can be maintained at a predetermined angle, the air can be easily circulated, and air can be efficiently cleaned and dehumidified. Therefore, in upper and lower blades 14 shown in fig. 7 (b), end 14e rotates upward in the laundry drying mode, and end 14f rotates upward in the dehumidification mode. The operation of the upper and lower blades 14 will be described below.

(operation of the upper and lower blades 14)

Fig. 8 (a) shows the state of the fan blades during the stop operation, (b) shows the state of the fan blades during the dehumidification mode, and (c) shows the state of the fan blades during the clothes drying mode. Fig. 9 is a diagram illustrating the blowing range in the clothes drying mode of the upper and lower fan blades 14.

When the dehumidifier 101 is stopped, as shown in fig. 8 (a), the upper and lower blades 14 are rotated so as to close the air outlet 15, and when in the dehumidification mode, as shown in fig. 8 (b), the upper and lower blades 14 are rotated so that the air outlet 15 is opened on the operation portion 18 side (back cover 13 side), and when in the clothes drying mode, the upper and lower blades 14 are rotated so that the air outlet 15 is opened on the front cover 12 side, as shown in fig. 8 (c).

Here, in the dehumidification mode, as shown in fig. 8 (b), the surface 14c of the upper and lower blades 14 on the back cover 13 side is turned upward, and dry air is blown out toward the back cover 13 side, that is, toward the wall of the room. The angle of rotation of the upper and lower blades 14 in this case is preferably 20 ° back. The backward tilt 20 ° is a tilt angle of 20 ° upward toward the wall side with respect to the ground. With this configuration, the dehumidified air flows from the wall toward the ceiling, and further flows from the ceiling toward the wall and the floor, thereby efficiently dehumidifying the entire room. The inclination angle is not limited to 20 °. For example, the inclination angle may be changed according to the installation position of the dehumidifier 101, the structure of a room in which the dehumidifier 101 is installed, or the like.

On the other hand, in the clothes drying mode, as shown in fig. 8 (c), the surface 14b of the upper and lower blades 14 on the front cover 12 side is turned upward, and dry air is blown out toward the front cover 12 side, that is, toward the wall side and the opposite side of the room. Unlike the dehumidification mode, the laundry drying mode needs to efficiently blow dry air to a predetermined position. In this case, as shown in fig. 9, a blowing range is defined between a tangent line X of the surface 14b of the upper and lower blades 14 at the time of operation stop and a tangent line Y of the surface 14b of the upper and lower blades 14 at the time of the clothes drying mode. In this clothes drying mode, a tangent Y to the surface 14b of the upper and lower fan blades 14 is substantially vertical.

As shown in fig. 7 (b), since the angle θ 1 of the upper and lower blades 14 is larger on the front cover 12 side than the angle θ 2 of the rear cover 13 side, when the blade is rotated so that the surface 14b side faces upward, the tangent line Y can be made substantially vertical at a rotation angle smaller than that when the blade is rotated so that the surface 14c side faces upward. Therefore, when the surfaces 14b of the upper and lower blades 14 are rotated upward, the surfaces 14c of the upper and lower blades 14 do not interfere with the left and right blades 19 provided in the air outlet 15. Therefore, since the space in the outlet 15 can be narrowed, the vertical dimension in the vicinity of the outlet 15 of the dehumidifier 101 can be made small.

In this way, the upper and lower blades 14 having a thick cross section in a substantially triangular shape (substantially V-shape) can shift the wind direction upward, which is advantageous for drying the laundry, and the area where the upper and lower blades 14 enter the duct 24 from the air outlet 15 is also reduced, so that the space of the product air outlet 15 can be saved.

The shape of the left and right blades 19 for controlling the air direction in the left-right direction also makes the rear side of the product concave, and avoids interference with the upper and lower blades 14, thereby further saving space. Further, since the apex of the upper and lower blades 14 is close to the product front side (the front cover 12), the apex comes to a position offset from the air passage at the time of the back blowing, and therefore, the dehumidifying operation can be performed with less noise and high efficiency while pressure loss is difficult.

(Effect)

In the dehumidifier 101 having the above configuration, the upper and lower blades 14 are inclined surfaces (

surfaces

14b, 14 c) facing the outlet port, which are inclined from both front and rear end sides in the blowing direction of the wind toward the rotation center side of the upper and lower blades 14, and the wind flows along the inclined surfaces and is blown out. Thus, if the blowing direction of the air blown out from the upper and lower blades 14 is the same as the rotation angle of the upper and lower blades 14, the blowing direction is higher than the case where the surfaces (the

surfaces

14b and 14 c) facing the air outlet 15 of the upper and lower blades 14 are non-inclined surfaces.

If the inclination angle of the inclined surface is increased, the blowing direction of the wind can be changed at a small rotation angle as described above.

Since the upper and lower blades 14 have a relationship of θ 1 > θ 2, the point where the surface 14b intersects the surface 14c, that is, the position of the apex of the triangle, is shifted toward the surface 14 b. In the present embodiment, the apex of the triangle is offset toward the front cover 12. Thus, if the rotation angles of the upper and lower blades 14 are the same, the blowing direction of the wind blown out from the inclined surface (surface 14 b) having a large inclination angle can be set to be higher than the inclined surface (surface 14 c).

Therefore, the upper and lower blades 14 are reversed to switch the airflow between the rear direction (the back cover 13 side) and the front direction (the front cover 12 side), and the thickness is provided at the rotation center of the upper and lower blades 14, whereby the upward airflow control generally required for the dehumidifier 101 can be performed.

In addition, since the rotation angle of the upper and lower blades 14 can be made as small as possible when the blowing range of the wind is the same as described above, the configuration of the upper and lower blades 14 is not limited to the substantially triangular cross section as shown in fig. 7 (b), and the cross section may be thick in the central portion and thin on the blowing side of the wind. In embodiment 2 below, another shape of the upper and lower blades will be described.

[ embodiment 2]

Other embodiments of the present invention will be described below. For convenience of explanation, members having the same functions as those described in the above embodiments are given the same reference numerals, and the explanation thereof will not be repeated.

(shape of fan blade/removable)

Fig. 10 is a schematic configuration showing various fan blades of the present embodiment, in which (a) to (c) are sectional views, and (d) and (e) are plan views.

In the upper and lower blades 14 shown in fig. 7 (b) of embodiment 1, the

surfaces

14b and 14c are flat surfaces, and when the angle between the surface 14a and the surface 14b is θ 1 and the angle between the surface 14a and the surface 14c is θ 2, there is a relationship of θ 1 > θ 2.

In contrast, in the upper and lower blades 201 shown in fig. 10 (a), the

surfaces

201b and 201c are inclined surfaces, and when the angle between the surface 201a and the surface 201b is θ 1 and the angle between the surface 201a and the surface 201c is θ 2, the relationship of θ 1= θ 2 is established. Here, the

surfaces

201a, 201b, and 201c correspond to the

surfaces

14a, 14b, and 14c of the upper and lower blades 14. When the upper and lower blades 201 are mounted on the dehumidifier 101, air can be blown in the same direction at the same rotational angle on the front cover 12 side and the back cover 13 side.

As shown in fig. 10 (b), the upper and lower blades having other shapes may be the upper and lower blades 202 in which the surface 202b is a curved surface and the surface 202c is an inclined plane. Here, the

surfaces

202a, 202b, and 202c correspond to the

surfaces

14a, 14b, and 14c of the upper and lower blades 14.

As shown in fig. 10 (c), the upper and lower blades having another shape may be blades 203 each having a substantially trapezoidal cross section including a plane having an inclined surface 203b, a plane having an inclined surface 203c, and a plane 203d connecting the

surfaces

203b and 203 c. Here, the

surfaces

203a, 203b, and 203c correspond to the

surfaces

14a, 14b, and 14c of the upper and lower blades 14.

As described above, the upper and lower blades may have any cross-sectional shape as long as they have a thick central portion and a thin wall for blowing air.

In embodiment 1, the blowing direction of the air in the left-right direction is adjusted by the left and right blades 19, but as shown in fig. 10 (d) and (e), the

fins

204d and 204e may be provided on the inner surfaces (the

surfaces

204c and 204b facing the air outlet 15) of the upper and lower blades 204. The fins 204d are formed to be expanded on the back surface 204c of the upper and lower blades 204 so as to be expanded on the back cover 13 side and blow air, and the fins 204e are formed to be parallel to the blowing direction on the front surface 204b of the upper and lower blades 204 so as to be blown air without being expanded on the front cover 12 side.

Therefore, when the vertical blades 204 shown in (d) and (e) of fig. 10 are used, there is no need to adjust the lateral direction in which the air is blown out by the left and right blades 19, and therefore, there is no need to provide the left and right blades 19, and the space of the air outlet 15 can be further reduced. This also reduces the vertical dimension of the dehumidifier by the amount of the left and right blades 19.

The upper and lower blades having the above-described configurations may be detachably provided in the dehumidifier 101. Therefore, the user can replace the upper fan blade and the lower fan blade according to the use purpose.

In

embodiments

1 and 2, the shape and operation of the upper and lower blades will be mainly described. In embodiment 3 below, odor recovery control in the case of using the clothes drying mode of the dehumidifier 101 of

embodiments

1 and 2 will be described.

[ embodiment 3]

Other embodiments of the present invention will be described below. For convenience of explanation, members having the same functions as those described in the above embodiment are given the same reference numerals, and the explanation thereof will not be repeated.

Generally, when clothes are dried by a dehumidifier, the clothes absorb moisture in a room again, bacteria proliferate, and an unpleasant odor is generated. This phenomenon is called odor recovery.

In the present embodiment, odor recovery control is described in which odor is not recovered when clothes are dried by the dehumidifier described in

embodiments

1 and 2.

(operation section)

Fig. 11 is a diagram showing an operation surface on which a user mounted on the operation unit 18 of the dehumidifier 101 shown in fig. 1 operates.

As shown in fig. 11, the operation unit 18 includes various operation buttons such as a timer, a horizontal swing, a vertical swing, a convenience function, clothes, dehumidification, and mold prevention. The odor recovery control is performed by operating the button of the convenience function and selecting the odor recovery countermeasure after the button of the laundry is pressed and the laundry drying mode is set. Thus, the operation unit 18 is operated to generate a control signal in accordance with the content of the operation by the user, and the operation of each unit is controlled by the generated control signal.

(control of odor recovery)

Fig. 12 is a functional block diagram of the controller 30 that receives an operation of the operation unit 18.

The controller 30 includes an odor recovery control unit 31, a fan blade drive unit 32, a dehumidification drive unit 33, and a fan drive unit 34.

The odor recovery control unit 31 is further connected to the operation unit 18, the humidity sensor 41, and the temperature sensor 42. That is, when the odor recovery control unit 31 receives a control signal for controlling the recovery of the odor by the operation unit 18, the rotation of the upper and lower blades 14 is controlled by the blade driving unit 32, the dehumidification of the dehumidification unit 5 is controlled by the dehumidification driving unit 33, and the rotation of the fan motor 23 is controlled by the fan driving unit 34, based on the humidity detected by the humidity sensor 41 and the temperature detected by the temperature sensor 42. Thereby, the odor recovery control section 31 executes odor recovery control.

In the odor recovery control, after the drying of the laundry in the laundry drying mode is completed, the control of applying the wind to the dried laundry is performed. This prevents re-absorption of moisture to the dried clothes, and kills bacteria attached to the dried clothes.

Specifically, the odor recovery control is performed as in the following (1) to (6).

(1) Only the wind is continuously applied to the dry laundry after the laundry is dried. In this case, the humidity in the room is detected by the humidity sensor 41, the laundry drying mode is ended when the detected humidity is lower than a predetermined value, and the fan driving unit 34 is instructed to continue driving the fan motor 23 so as to continue applying the air to the dried laundry from the time when the laundry drying mode is ended to a predetermined time. At this time, the dehumidification driving unit 33 stops the dehumidification of the dehumidification unit 5. Here, after one hour of the laundry drying time, the air supply is continued for one hour.

Here, since the air volume during the clothes drying is set to the maximum of the air volume that can be set by the dehumidifier 101, the air volume during the odor recovery control is maintained at the maximum.

(2) The air volume after drying the clothes is variable according to the humidity. That is, the air volume when the laundry is dried is not maintained, but may be varied according to the detection result of the humidity sensor 41. In this case, the odor recovery control unit 31 instructs the fan drive unit 34 to drive the fan motor 23 so as to increase the air volume when it is determined from the detection result of the humidity sensor 41 that the humidity is higher than the predetermined value, and so as to decrease the air volume when it is determined that the humidity is lower than the predetermined value.

(3) The wind direction of the dry air blown out at the time of the odor recovery control is alternately switched between wide and narrow. In this case, the dehumidifier 101 can drive the left and right blades 19. Thus, the wind direction is alternately switched between the wind and narrow, thereby making the wind applied to the laundry strong and weak to undulate the laundry, thereby facilitating the drying.

(4) When only the wind is continuously applied to the dry clothes during the odor recovery control, the dehumidifying operation is performed when the humidity rises. In this case, when the humidity sensor 41 detects a humidity higher than a predetermined value, the odor recovery control unit 31 instructs the dehumidification driving unit 33 to perform the dehumidification operation by the dehumidification unit 5.

(5) The temperature is detected during the odor recovery control, and the low temperature part below a predetermined temperature concentrates the air supply. In this case, the odor recovery control unit 31 detects the temperature of the surroundings of the dried clothes for each region by the temperature sensor 42, and instructs the fan drive unit 34 and the fan drive unit 32 to drive the fan motor 23, the upper and lower fan blades 14, and the left and right fan blades 19 so that the air flow is concentrated for the region of the temperature lower than the predetermined temperature.

(6) During the odor recovery control, air supply is performed according to the upper, middle, lower, left and right areas, and the air supply is concentrated for the area with humidity higher than the predetermined value. In this case, the odor recovery control unit 31 instructs the fan drive unit 32 and the fan drive unit 34 to drive the upper and lower fan blades 14, the left and right fan blades 19, and the fan motor 23 so as to divide the space containing the dried clothes into a plurality of regions and to blow air to each of the divided regions.

(Effect)

As described above, in the dehumidifier 101, the odor recovery control unit 31 performs the above-described odor recovery control after the clothes are dried, thereby preventing the clothes from absorbing moisture in the room again and killing bacteria existing in the clothes, thereby eliminating unpleasant odor of the dried clothes.

In embodiments 1 to 3, an example in which the fan blade of the present invention is placed in a section of an air conditioner, that is, a dehumidifier is described, but the present invention is not limited thereto, and the fan blade may be placed in a section of an air conditioner, a dehumidified air cleaner, or another air conditioner. Therefore, the fan blade of the present invention can be applied to a device equipped with a function of blowing air, such as an air conditioner, that is, a fan device.

[ example Using software ]

The control block of the dehumidifier 101 (particularly, the odor recovery control unit 31) may be implemented by a logic circuit (hardware) formed on an integrated circuit (IC chip) or the like, or may be implemented by software.

In the latter case, the dehumidifier 101 includes a computer that executes commands of a program as software that realizes the respective functions. The computer includes, for example, at least one processor (control device), and includes at least one computer-readable recording medium storing the program. In the computer, the processor reads the program from the recording medium and executes the program, thereby achieving the object of the present invention. As the processor, for example, a CPU (Central Processing Unit) can be used. As the recording medium, a "non-transitory tangible medium" may be used, and for example, a tape, a disk, a card, a semiconductor Memory, a programmable logic circuit, or the like may be used in addition to a ROM (Read Only Memory) or the like. The system may further include a RAM (Random Access Memory) for developing the program. The program may be supplied to the computer via an arbitrary transmission medium (a communication network, a broadcast wave, or the like) through which the program is transmitted. In addition, an aspect of the present invention can also be implemented by a data signal loaded in a carrier wave that implements the above-described program by electronic transmission.

[ conclusion ]

The fan blade (upper and lower fan blades 14) of claim 1 of the present invention is rotatably supported by a shaft above the air outlet 15 of the air blower (dehumidifier 101), thereby dividing the air blown out from the air outlet 15 into front and rear parts; among the surfaces (

surfaces

14a, 14 b) of the blades facing the air outlet, the center side is thicker than both end portions of the blades (upper and lower blades 14) in the direction in which the air is blown.

According to the above configuration, since the wall thickness of the surface facing the outlet of the blade is thicker at the center side than at the front and rear end sides in the direction of the blowing air, the air flows from the thick portion of the blade toward the thin portion. Thus, the blowing direction of the wind blown out from the blades is higher than the case where the wall thickness of the surface facing the blowing port of the blades is uniform.

This makes it possible to obtain the blowing direction of the wind desired by the user with a small rotation angle.

In the fan blade according to claim 2 of the present invention, in claim 1, the surfaces (the

surfaces

14a and 14 b) facing the air outlet may include a maximum thickness portion having a thickest wall; includes a plane inclined from at least one of the two end portions toward the maximum thickness portion.

According to the above configuration, since the surfaces facing the air outlet are flat surfaces (inclined surfaces) inclined from both front and rear end portions in the air blowing direction toward the maximum wall thickness portion side, the air flows along the inclined surfaces and is blown out. Thus, the blowing direction of the wind blown out from the blades is higher than in the case where the surface of the blades facing the outlet is not an inclined surface.

In addition, if the inclination angle of the inclined surface is increased, the blowing direction of the wind can be changed at a small rotation angle as described above.

In the fan blade according to claim 3 of the present invention, in claim 2, the cross section formed in the surfaces (the

surfaces

14a and 14 b) facing the air outlet 15, the cross section intersecting the inclined surface extending from one of the two end portions toward the maximum thickness portion and the inclined surface extending from the other of the two end portions toward the maximum thickness portion may be offset toward either one of the two end portions.

According to the above configuration, the inclined surface formed on the surface facing the air outlet 15 and extending from one of the two end portions toward the maximum thickness portion is offset toward any one of the two end portions from the intersection where the inclined surface extending from the other of the two end portions toward the maximum thickness portion intersects with the inclined surface, and thereby the inclination angles of the two inclined surfaces extending from the front and rear end sides in the air blowing direction toward the maximum thickness portion can be made different.

Thus, the blowing direction of the wind blown out from the inclined surface having a large inclination angle can be made upward with the same turning angle.

An air conditioner according to claim 4 of the present invention is characterized by comprising: the fan blade (upper and lower fan blades 14) according to any one of the above aspects 1 to 3.

According to the above configuration, the blowing direction of the wind desired by the user can be obtained with a small rotation angle.

In the air conditioner according to claim 5 of the present invention, in the air conditioner according to claim 4, the fan blades (upper and lower fan blades 14) may be detachably provided from the main body of the air conditioner (dehumidifier 101).

According to the above structure, the user can replace the fan blade according to the application.

The dehumidifier of claim 6 of the present invention is characterized by comprising: the fan blade (upper and lower fan blades 14) according to any one of the above aspects 1 to 3.

The dehumidifier according to claim 7 of the present invention may be the dehumidifier according to claim 6, wherein the fan blades (upper and lower fan blades 14) are detachably attached to the main body of the air conditioner (dehumidifier 101).

According to the structure, the user can replace the fan blades according to the application.

The present invention is not limited to the above embodiments, and various modifications can be made within the scope shown in the claims, and embodiments obtained by appropriately combining technical means disclosed in the respective embodiments are also included in the technical scope of the present invention. Further, by combining the technical means disclosed in the respective embodiments, new technical features can be formed.

Description of the reference numerals

1\8230anda box body; 2 \ 8230and blower (air supply device); 5\8230adehumidifying part; 11 \ 8230and a shell; 12 \ 8230and front cover; 13 8230a back cover; 14\8230andupper and lower fan blades (fan blades); 14e 823060 parts of the shell; 14f 8230and end parts; 14g 8230a maximum wall thickness; 15\8230ablow-out opening; 16\8230asuction inlet; 18, 8230a manipulation part; 19 \ 8230and left and right fan blades; 21 \ 8230and fan; 22 \ 8230and fan case; 23 \ 8230and fan motor; 24 \ 8230duct (ventilation path); 30 \ 8230and a controller; 31 \ 8230and an odor recovery control part; 32 \ 8230and a fan blade driving part; 33 \ 8230and a dehumidifying driving part; 34 \ 8230and a fan driving part; 41 \ 8230a humidity sensor; 42 \ 8230and a temperature sensor; 51 \ 8230a dehumidifying water tank; 101 \ 8230a dehumidifier (air conditioner); 102, 8230a garment; 201. 202, 203, 204, 8230a upper fan blade and a lower fan blade; 204d, 205e \8230anda fan

Claims

1. An air supply arrangement comprising:

the box body is provided with a plurality of air inlets,

a blow-out port formed on the upper surface of the case,

upper and lower blades rotatably supported by a shaft above the air outlet to divide the air blown out from above the air outlet into front and rear parts, an

Left and right blades provided in the air outlet to adjust a left and right direction of a wind direction of the blown wind; it is characterized in that the preparation method is characterized in that,

the upper and lower blades have a maximum thickness portion which is thicker at the center side than both end portions in the front-rear direction and is the thickest in the wall thickness,

wherein an intersecting portion of the upper and lower blades is offset further toward the front side than a central portion in the front-rear direction of the upper and lower blades, the intersecting portion is formed on a surface facing the air outlet, and the intersecting portion is an intersecting portion where a first inclined surface facing the maximum thickness wall portion from a front end portion of the upper and lower blades and a second inclined surface facing the maximum thickness wall portion from a rear end portion of the upper and lower blades intersect with each other,

the upper fan blade and the lower fan blade are arranged,

is rotatable between a first state and a second state,

in the first state, the air outlet is opened such that the first inclined surface is located on the front side of the air outlet and the second inclined surface extends rearward from the intersecting portion,

in the second state, the air outlet is opened such that the first inclined surface extends upward from the intersection to the front portion, the second inclined surface faces the air outlet such that the second inclined surface extends downward from the intersection to the rear portion, and the second inclined surface can avoid the left and right blades.

2. An air conditioner characterized by comprising:

the air supply arrangement of claim 1.

3. The air conditioner according to claim 2,

the upper and lower blades are detachably provided from the air conditioner body.

4. A dehumidifier, comprising:

the air blowing device of claim 1.

5. The dehumidifier of claim 4,

the upper and lower blades are detachably mounted to the dehumidifier body.