Air conditioning device

Abstract

The air conditioning unit (1) has a water storage container (19) that is disposed in a cavity (10) covered by an isolation wall (39) inside the main body (2) and stores water, an electrostatic sensor (40) disposed in the isolation wall (39) and detects electrostatic capacitance, and a control unit (5) that stores the electrostatic capacitance detected by the electrostatic sensor (40). The electrostatic sensor (40) is disposed in the isolation wall (39) facing the water in the water storage container (19) across the side of the water storage container (19). The container (19) has a distance changing unit (42), which causes the distance between the electrostatic sensor (40) at the first water level (41a) and the water in the water storage container (19) to change and the distance between the electrostatic sensor (40) at the second water level (41b) which is higher than the first water level (41a) and the water in the water storage container (19) to change. The control unit (5) determines the water level in the water storage container (19) as the first water level (41a) based on the change in electrostatic capacitance detected by the electrostatic sensor (40).

Description

Technical Field

[0001] This invention relates to an air conditioning device that humidifies stored water by blowing air into a filter that is impregnated with a water storage container. Background Technology

[0002] Conventional air conditioning devices include a water storage container for storing water, a filter for storing water in the water storage container, a float part with buoyancy, a detection part for detecting the position of the float part, and a control part for controlling the water supply part based on the detection signal from the detection part (see, for example, Patent Document 1).

[0003] Existing technical documents

[0004] Patent documents

[0005] Patent Document 1: Japanese Patent Application Publication No. 2020-120790

[0006] Patent Document 2: Japanese Patent Application Publication No. 2015-183981 Summary of the Invention

[0007] In conventional air conditioning systems with water level detection technology, the structure consists of a buoyant float, a detection unit that detects the position of the float, and a control unit that controls the water supply based on the detection signal from the detection unit. However, the float must be designed to rotate freely within the water storage container, resulting in numerous irregularities and reduced maintainability.

[0008] This invention provides an air conditioning device that reduces bumps and dents inside a water storage container, thereby improving maintainability.

[0009] The air conditioning device of the present invention comprises:

[0010] The main body shell has an air intake and an air outlet;

[0011] A water storage container is disposed in a cavity partially surrounded by an isolation wall inside the main body shell, and stores water;

[0012] A filter is configured such that its lower end is immersed in water in the water storage container;

[0013] A blower that draws in air from the intake port and blows it through the filter to the outlet.

[0014] An electrostatic sensor, disposed on the isolation wall, detects electrostatic capacitance; and

[0015] The control unit stores the electrostatic capacitance detected by the electrostatic sensor.

[0016] The electrostatic sensor is positioned on the isolation wall, facing the water inside the water storage container across the side of the container.

[0017] The water storage container has a distance-changing unit that changes the distance between the electrostatic sensor at the first water level and the water in the water storage container, and the distance between the electrostatic sensor at the second water level (which is higher than the first water level) and the water in the water storage container.

[0018] The control unit determines the water level in the water storage container as the first water level based on the change in electrostatic capacitance detected by the electrostatic sensor.

[0019] Invention Effects

[0020] According to the present invention, water level can be detected in water storage containers with fewer irregularities, thereby improving maintainability. Attached Figure Description

[0021] Figure 1 This is a perspective view of the air conditioning device according to Embodiment 1 of the present invention.

[0022] Figure 2 This is a perspective view showing the air conditioning unit with its panel open.

[0023] Figure 3 This is a diagram showing the cross-sectional structure as viewed from the right side when facing the front surface of the air conditioner.

[0024] Figure 4 This is a partial exploded 3D view of the air conditioning device.

[0025] Figure 5 This is a partial exploded 3D view of the air conditioning device.

[0026] Figure 6 This is an exploded perspective view of the tank component of the air conditioning device.

[0027] Figure 7 This is a diagram showing the cross-sectional structure of the tank component of the air conditioning device.

[0028] Figure 8 This is a diagram showing the cross-sectional structure of the water storage container of the air conditioning device.

[0029] Figure 9 This is a diagram showing the cross-sectional structure of the water storage container of the air conditioning device.

[0030] Figure 10 This is a three-dimensional view of the water storage container of the air conditioning unit.

[0031] Figure 11This is a partial exploded 3D view of the air conditioning device.

[0032] Figure 12 This is a three-dimensional view of the water storage container of the air conditioning unit.

[0033] Figure 13 This is a diagram showing the cross-sectional structure of the water storage container of the air conditioning device.

[0034] Figure 14 This is a block diagram showing the structure of the air conditioning device.

[0035] Figure 15 This is a perspective view of the air conditioning device according to Embodiment 2 of the present invention.

[0036] Figure 16 This is a perspective view showing the air conditioning unit with its panel open.

[0037] Figure 17 This is a diagram showing the cross-sectional structure as viewed from the right side when facing the front surface of the air conditioning unit.

[0038] Figure 18 This is a partial exploded 3D view of the air conditioning device.

[0039] Figure 19 This is a partial exploded 3D view of the air conditioning device.

[0040] Figure 20 This is an exploded perspective view of the tank component of the air conditioning device.

[0041] Figure 21 This is a diagram showing the cross-sectional structure of the tank component of the air conditioning device.

[0042] Figure 22 This is a diagram showing the cross-sectional structure of the water storage container of the air conditioning device.

[0043] Figure 23 This is a diagram showing the cross-sectional structure of the water storage container and tank components of the air conditioning device.

[0044] Figure 24 This is a three-dimensional view of the water storage container of the air conditioning unit.

[0045] Figure 25 This is a partial exploded 3D view of the air conditioning device.

[0046] Figure 26 This is a diagram showing the cross-sectional structure of the water storage container and electrostatic sensor of the air conditioning device.

[0047] Figure 27 This is a block diagram showing the structure of the air conditioning device.

[0048] Figure 28 This is a diagram showing the cross-sectional structure of the water storage container of the air conditioning device.

[0049] Figure 29 This is a diagram showing the cross-sectional structure of the water storage container of the air conditioning device.

[0050] Figure 30 This is a diagram showing the cross-sectional structure of the water storage container of the air conditioning device.

[0051] Figure 31 This is a perspective view of the air conditioning device according to Embodiment 3 of the present invention.

[0052] Figure 32 This is a perspective view showing the air conditioning unit with its panel open.

[0053] Figure 33 This is a diagram showing the cross-sectional structure as viewed from the right side when facing the front surface of the air conditioning unit.

[0054] Figure 34 This is a partial exploded 3D view of the air conditioning device.

[0055] Figure 35 This is a partial exploded 3D view of the air conditioning device.

[0056] Figure 36 This is an exploded perspective view of the tank component of the air conditioning device.

[0057] Figure 37 This is a diagram showing the cross-sectional structure of the tank component of the air conditioning device.

[0058] Figure 38 This is a diagram showing the cross-sectional structure of the water storage container of the air conditioning device.

[0059] Figure 39 This is a diagram showing the cross-sectional structure of the water storage container and tank components of the air conditioning device.

[0060] Figure 40 This is a three-dimensional view of the water storage container of the air conditioning unit.

[0061] Figure 41 This is a partial exploded 3D view of the air conditioning device.

[0062] Figure 42 This is a diagram showing the cross-sectional structure of the water storage container and electrostatic sensor of the air conditioning device.

[0063] Figure 43 This is a block diagram showing the structure of the air conditioning device.

[0064] Figure 44This is a diagram showing the cross-sectional structure of the water storage container of the air conditioning device.

[0065] Figure 45 This is a diagram showing the cross-sectional structure of the water storage container of the air conditioning device.

[0066] Figure 46 This is a diagram showing the cross-sectional structure of the water storage container of the air conditioning device.

[0067] Figure 47 This is a graph showing the relationship between electrostatic capacitance and water level.

[0068] Figure 48 This is a diagram showing the data table stored in the storage unit according to Embodiment 4 of the present invention.

[0069] Figure 49 This is a flowchart illustrating the airflow control steps of an air conditioning device based on Embodiment 4 of the present invention.

[0070] Figure 50 This is a diagram showing the data table stored in the storage unit according to Embodiment 5 of the present invention.

[0071] Figure 51 This is a flowchart illustrating the airflow control steps of an air conditioning device based on Embodiment 5 of the present invention. Detailed Implementation

[0072] (Implementation Method 1)

[0073] Embodiment 1 of the present invention will be described with reference to the accompanying drawings.

[0074] Figure 1 and Figure 2 This is a perspective view of the air conditioning device 1 according to Embodiment 1 of the present invention. It should be noted that... Figure 1 This is a diagram taken from an obliquely upward view of the air conditioning unit from the front surface side. Figure 2 This diagram shows the air conditioning device 1 with the panel 9 open, viewed from an angle above the front surface. Additionally, Figure 3 This is a diagram showing the cross-sectional structure of the air conditioning unit 1 as viewed from the right side when facing the front surface of the air conditioning unit 1.

[0075] It should be noted that, in the following text, air conditioning unit 1 may sometimes be referred to as... Figure 1The vertical direction is defined as "up and down" and the horizontal direction as "left and right" in the state shown (hereinafter also referred to as "setting state"). Furthermore, in the setting state of the air conditioning unit 1, the side with the plate 9 is designated as the "right side" and the side of the air conditioning unit 1 opposite the right side is designated as the "left side". When viewed from the right side of the air conditioning unit 1, the left side is the "front surface", and when viewed from the right side of the air conditioning unit 1, the right side is the "back surface".

[0076] The detailed structure of the air conditioning unit 1 will be described below. Figures 1 to 3 As shown, the air conditioning device 1 of Embodiment 1 includes a main body shell 2 in a generally box-shaped form, a blower 3, an air conditioning unit 4, a control unit 5, and an operation unit 6.

[0077] The main body shell 2 is roughly box-shaped with a longitudinal shape, and has an air intake 7, an air outlet 8, and a plate 9.

[0078] The air intake 7 is provided on the left and right sides of the main body shell 2.

[0079] The blow-out port 8 is located on the back side of the top surface of the main body shell 2. An operating part 6 is provided on the front surface side of the top surface of the main body shell 2.

[0080] A closable panel 9 is provided on one side of the main body shell 2. When the panel 9 is opened, an air conditioning unit 4 is provided inside the main body shell 2.

[0081] like Figure 3 As shown, an air passage 11 (illustrated by an arrow) connecting the air intake 7 and the air outlet 8 is provided inside the main body shell 2. In the air passage 11, starting from the air intake 7, an air conditioning unit 4 (including the water storage container 19 and filter section described later), a blower 3, and an air outlet 8 are arranged in sequence.

[0082] The blower 3 is located in the upper part of the main body housing 2, and includes a motor part 12, a fan part 13 that rotates by means of the motor part 12, and a vortex-shaped housing part 14 that surrounds them.

[0083] The motor unit 12 is a single-shaft motor. The rotation shaft 15 of the motor unit 12 extends from the front surface side of the main body housing 2 to the rear side.

[0084] The fan section 13 is a Sirocco fan and is fixed to the front end of the rotating shaft 15 that extends horizontally from the motor section 12.

[0085] The housing portion 14 is provided with an outlet 16 and an intake port (not shown). The outlet 16 is located on the upper surface of the housing portion 14 near the main body housing 2. The intake port is located on the rear side of the housing portion 14 near the main body housing 2. When the fan portion 13 is rotated by the motor portion 12, air outside the housing portion 14 flows into the housing portion 14 through the intake port and is blown out of the housing portion 14 through the outlet 16.

[0086] Figure 4 This is a perspective view of the air conditioning device 1 according to Embodiment 1 of the present invention. Figure 4 This is a diagram taken from an obliquely upward view of the air conditioning device 1 with the plate 9 open and the canister component 20 removed. Figure 5 This is a perspective view of the air conditioning device 1 according to Embodiment 1 of the present invention. Figure 5 This is a diagram taken from an obliquely upward view of the air conditioning device 1 with the plate 9 open and the water storage container 19 removed.

[0087] like Figure 4 and Figure 5 As shown, the air conditioning unit 4 is disposed within the cavity 10. The cavity 10 is a recessed hole extending from one side (right side) of the main body housing 2 toward the other side (left side) of the main body housing 2. The air conditioning unit 4 can be removed from inside the cavity 10 to outside the main body housing 2. The air conditioning unit 4 includes a water storage container 19, a tank component 20, and a gas-liquid contact portion 21.

[0088] The water storage container 19 is made of resin. It has a bowl shape with an open upper surface and a structure capable of storing water. An example of the material is ABS resin. The water storage container 19 is located at the lower part of the main body shell 2 and is configured to be slidably installed and removed from the cavity portion 10 in a horizontal direction by opening the plate portion 9. The water storage container 19 stores water supplied from the tank component 20.

[0089] Figure 6 This is an exploded perspective view of the tank component 20 according to the first embodiment of the present invention. Figure 7 This is a diagram showing the cross-sectional structure of the tank component 20 according to Embodiment 1 of the present invention. Figure 8 This is a diagram showing the cross-sectional structure of the water storage container 19 according to Embodiment 1 of the present invention. Figure 9 This is a cross-sectional view showing the state in which the water storage container 19 is equipped with the tank component 20 according to Embodiment 1 of the present invention.

[0090] like Figures 6 to 9 As shown, the tank component 20 is located in the lower part inside the main body shell 2 and has a structure that allows it to be loaded and unloaded relative to the water storage container 19. A tank holding part 23 protruding upward is provided on the bottom surface of the water storage container 19.

[0091] The tank component 20 is assembled at the position of the tank holding part 23 provided on the bottom surface of the water storage container 19. The tank component 20 has a tank 24 for storing water, an opening 24a provided on the lower surface of the tank 24 and communicating between the inside and outside of the tank 24, and a cover 25 covering the opening 24a.

[0092] A hole 25b is provided in the center of the cover 25, which communicates vertically; a valve part 26 for opening and closing the hole 25b; and a cylindrical part 25a that surrounds the hole 25b, with its central axis extending vertically and protruding downward from the cover 25. Additionally, multiple notches 25c are provided at the lower end of the cylindrical part 25a of the cover 25. The hole 25b is positioned at the center when viewed along the central axis of the cylindrical part 25a.

[0093] In the above structure, when the opening 24a of the tank 24 is facing downwards and the tank member 20 is installed in the position of the tank holding part 23 of the water storage container 19, the valve part 26 is opened by means of the tank holding part 23. That is, when water is put into the tank member 20 and the tank member 20 is installed in the position of the tank holding part 23, the valve part 26 moves upwards by means of the tank holding part 23, so that the hole 25b of the cover 25 is opened. When the hole 25b of the cover 25 is open, the water in the tank 24 is supplied to the water storage container 19 through the hole 25b of the cover 25, so that water accumulates in the water storage container 19.

[0094] When the water level in the water storage container 19 rises and reaches the upper end of the multiple notches 25c provided at the lower end of the cylindrical portion 25a of the cover 25, the hole 25b of the tank member 20 is sealed by water, thus stopping the water supply. Here, water remains inside the tank member 20, so even if the water level in the water storage container 19 drops, water from the tank 24 is supplied to the water storage container 19 at any time. That is, the water level in the water storage container 19 is kept constant.

[0095] Figure 10 This is a perspective view of Embodiment 1 of the present invention, in which a gas-liquid contact portion 21 is assembled in a water storage container 19.

[0096] like Figure 8 and Figure 10 As shown, the gas-liquid contact portion 21 is a component that brings water stored in the water storage container 19 into contact with indoor air drawn into the main body casing 2 by the blower 3. The gas-liquid contact portion 21 includes a filter 27, a filter frame 28, and a drive unit 29.

[0097] The filter 27 is cylindrical and has a structure with holes on its circumference for air to pass through. The filter 27 is assembled to the filter frame 28 such that one end of the filter 27 is immersed in water in the water storage container 19.

[0098] The filter frame 28 is rotatably supported on a bearing portion 30 provided in the water storage container 19. The filter 27 and the filter frame 28 have a structure that allows them to rotate by means of a drive portion 29.

[0099] The blower 3 draws indoor air from the main body casing 2 through the air intake 7 and blows it through the filter 27, which is immersed in water stored in the water storage container 19 at the lower end. The air blown into the filter 27 comes into contact with the water stored in the filter 27, thereby becoming air with higher humidity, and is blown out of the outlet 8 into the interior outside the main body casing 2.

[0100] The control unit 5 controls the drive unit 29 of the gas-liquid contact section 21 and the motor unit 12 of the blower 3. Specifically, the control unit 5 controls the operation of the drive unit 29 of the gas-liquid contact section 21 and the rotation speed of the fan unit 13 of the blower 3, etc., according to the operation of the operation unit 6.

[0101] When the fan unit 13 rotates with the help of the motor unit 12 of the blower 3, air is delivered through the air passage 11. When the fan unit 13 rotates, in the air passage 11, external air entering the main body housing 2 from the air intake 7 passes sequentially through the filter 27, the blower 3, and the outlet 8 and is blown out of the main body housing 2. The air conditioning device 1 humidifies by blowing air into the filter 27, which is immersed in water in the water storage container 19, thereby vaporizing the water stored in the filter 27.

[0102] Figure 11 This is a perspective view of the air conditioning device 1 according to Embodiment 1 of the present invention. Figure 11 The figure shows the air conditioning device 1 with the plate 9 open and the canister component 20 removed, viewed from a slightly above side. Figure 12 This is a perspective view of the water storage container 19 according to Embodiment 1 of the present invention, showing the state with the gas-liquid contact portion 21 removed. Figure 13 This is a diagram showing the cross-sectional structure of the water storage container 19 according to Embodiment 1 of the present invention. Figure 14 This is a block diagram showing the structure of the air conditioning device 1 according to Embodiment 1 of the present invention.

[0103] like Figure 3 , Figure 11 , Figure 12 , Figure 13 and Figure 14As shown, the main body shell 2 has a cavity 10 within it. The cavity 10 is a hole recessed from one side (right side) of the main body shell 2 inwards, and is partially surrounded by a partition wall 39. The partition wall 39 is made of resin, an example of which is ABS resin. The partition wall 39 is a structure that surrounds at least a portion of the back side, left side, and front surface of the main body shell 2 in the water storage container 19. The water storage container 19 is detachably mounted within the partition wall 39. An electrostatic sensor 40 for detecting electrostatic capacitance is provided in the partition wall 39. A control unit 5 is provided within the main body shell 2. This control unit 5 stores the electrostatic capacitance detected by the electrostatic sensor 40 and determines the water level in the electrolytic cell as a first water level based on the change in electrostatic capacitance detected by the electrostatic sensor 40. In addition, the control unit 5 controls the operation of the blower 3 and the drive unit 29 of the gas-liquid contact part 21.

[0104] Specifically, the electrostatic sensor 40 is positioned opposite the water in the water storage container 19, on the side of the isolation wall 39 perpendicular to the water surface, separated from the side of the water storage container 19. The electrostatic sensor 40 is located on the back side of the main housing 2 within the isolation wall 39. The electrostatic sensor 40 primarily detects the electrostatic capacitance of the water in the water storage container 19. The electrostatic sensor 40 is a sensor that detects static electricity generated by an object being charged and converts it into an electrical signal for detection; it can detect the presence and position of an object without contact. The electrostatic sensor 40 has a pair of electrodes, and an electrostatic capacitance exists between the electrodes. The electrostatic capacitance varies depending on the distance between the electrostatic sensor 40 and the water. If the distance between the electrostatic sensor 40 and the water increases, the electrostatic capacitance detected by the electrostatic sensor 40 decreases.

[0105] like Figure 13 As shown, the water storage container 19 has a distance changing unit 42, which changes the distance between the electrostatic sensor 40 and the water in the water storage container 19 from the distance between the electrostatic sensor 40 and the water in the water storage container 19 at the first water level 41a to the distance between the electrostatic sensor 40 and the water in the water storage container 19 at the second water level 41b, which is higher than the first water level 41a. The control unit 5 stores the electrostatic capacitance detected by the electrostatic sensor 40 and detects the first water level 41a based on the change in electrostatic capacitance detected by the electrostatic sensor 40.

[0106] Specifically, the distance between the electrostatic sensor 40 and the water in the water storage container 19 at the first water level 41a is greater than the distance between the electrostatic sensor 40 and the water in the water storage container 19 at the second water level 41b. The control unit 5 stores a first predetermined value and a second predetermined value, which is higher than the first predetermined value, as the detection value of the electrostatic sensor 40. If the water level in the water storage container 19 changes from the second water level 41b to the first water level 41a, the detection value of the electrostatic sensor 40 changes from a state higher than the second predetermined value to a state lower than the first predetermined value. When the control unit 5 detects that the detection value of the electrostatic sensor 40 changes from a value higher than the second predetermined value to a value lower than the first predetermined value, it determines that the water level in the water storage container 19 is the first water level 41a. Here, the first water level 41a is the low water level. If the water in the tank 24 is used up, the water level in the water storage container 19 drops. When the control unit 5 determines that the water level in the water storage container 19 is the first water level 41a, it stops the operation of the blower 3 and the drive unit 29 of the gas-liquid contact part 21.

[0107] Furthermore, the distance change section 42 has a recessed portion 43 formed by the side of the water storage container 19 closest to the electrostatic sensor 40, i.e., the opposing side 19a, recessed inwards from the water storage container 19. It should be noted that the lateral (left-right) dimension of the recessed portion 43 along the opposing side 19a of the water storage container 19 is larger than the lateral (left-right) dimension of the electrostatic sensor 40 along the opposing side 19a of the water storage container 19. Along the lateral (left-right) dimension of the opposing side 19a of the water storage container, the electrostatic sensor 40 is located within the recessed portion 43. That is, along the lateral (left-right) dimension of the opposing side 19a of the water storage container 19, the electrostatic sensor 40 is not located outside the recessed portion 43. The recessed portion 43 increases in size as it recesses downwards from its upper surface towards the inside of the water storage container 19.

[0108] The first water level 41a is slightly lower than the upper surface of the concave portion 43. By having the concave portion 43, the distance changing unit 42 is structured such that when the water level in the water storage container 19 changes to the first water level 41a, the distance between the electrostatic sensor 40 and the water in the water storage container 19 increases sharply. Therefore, the output of the electrostatic sensor 40 can be made steeper, resulting in a larger change in electrostatic capacitance. As a result, the first predetermined value can be set significantly away from the second predetermined value, improving the accuracy of water level detection.

[0109] Furthermore, the distance adjustment unit 42 has a flat portion 44 on the upper surface of the recessed portion 43. The first water level 41a is slightly lower than the flat portion 44. Therefore, when the water level in the water storage container 19 drops from a level higher than the flat portion 44 to a level lower than the flat portion 44, the distance between the electrostatic sensor 40 at the low water level (i.e., the first water level 41a) and the water in the water storage container 19 increases sharply. Moreover, water is less likely to accumulate near the electrostatic sensor 40, i.e., on the upper surface of the recessed portion 43. Therefore, false detections can be suppressed, and the accuracy of water level detection can be improved.

[0110] Additionally, a recessed portion 43 is disposed between the electrostatic sensor 40 and the filter 27 at the first water level 41a. The cylindrical filter 27 is configured to rotate freely in the vertical direction within the water storage container 19 about a laterally extending central axis. The axis of rotation in the cylindrical filter 27 is arranged parallel to the opposing side 19a of the water storage container 19 having the recessed portion 43. The distance from the opposing side 19a of the water storage container 19 to the periphery of the filter 27 side of the flat portion 44 is longer than the distance from the periphery of the filter 27 side of the flat portion 44 to the circumferential surface of the filter 27.

[0111] As a result, the distance from the opposite side 19a of the water storage container 19 to the periphery of the filter 27 side of the flat portion 44 becomes longer, allowing the water to move further away from the electrostatic sensor 40 at the first water level 41a compared to the second water level 41b. Therefore, changes in the output value are more easily captured, false detections can be suppressed, and the accuracy of water level detection can be improved.

[0112] In addition, the flat portion 44 slopes downward from the opposite side 19a of the water storage container 19 toward the filter 27 side.

[0113] Therefore, when the water level in the water storage container 19 drops from a level higher than that of the flat portion 44 to a level lower than that of the flat portion 44, the water flows to the side farther from the electrostatic sensor 40 due to the inclination of the surface of the flat portion 44. As a result, water is less likely to accumulate on the upper surface of the concave portion 43, and the detection value of the electrostatic sensor 40 decreases sharply, thereby improving the accuracy of water level detection.

[0114] Alternatively, the electrostatic sensor 40 can be installed on the isolation wall 39 perpendicular to the water surface, facing the water in the water storage container 19 through the side of the water storage container 19 and the isolation wall 39. The electrostatic sensor 40 can also be installed on the outer surface of the side of the isolation wall 39.

[0115] Therefore, the water storage container 19 is surrounded by a resin-based insulating wall 39. That is, there is an insulating wall 39 between the water in the water storage container 19 and the electrostatic sensor 40, so the water in the water storage container 19 will not come into contact with the charging part of the electrostatic sensor 40, and the product can be used safely.

[0116] Industrial applicability

[0117] This invention is expected to be utilized as an air conditioning device for homes, office buildings, and the like.

[0118] (Implementation Method 2)

[0119] Conventional air conditioning devices include a main casing, a water storage container, a water supply mechanism for automatically supplying water to maintain a constant water level in the water storage container, and a mechanism for detecting the presence or absence of liquid in the water storage container. If two detection mechanisms are provided to detect the presence or absence of liquid in the water storage container, there is a problem of increasing the size of the device. Therefore, two detection mechanisms are implemented through a single detection mechanism (see, for example, Patent Document 1).

[0120] In conventional air conditioning devices, a float with a built-in magnet that floats according to the water level in the water reservoir is installed inside the reservoir as a structure for detecting the presence or absence of liquid within it. A detection element capable of detecting the magnetic field of the magnet is located on the outer casing side. However, because the float is rotatably mounted inside the water reservoir, this results in uneven surfaces in the reservoir, leading to reduced maintainability.

[0121] In order to minimize unevenness and achieve a water storage container with good maintainability, the present invention provides a mechanism for detecting the presence or absence of a water storage container and the liquid inside the water storage container without using a float with a built-in magnet.

[0122] The air conditioning device of the present invention includes:

[0123] The main body shell has an air intake and an air outlet;

[0124] A water storage container, which is detachably disposed in a cavity partially surrounded by an isolation wall inside the main body shell, and stores water;

[0125] A filter is configured such that its lower end is immersed in water in the water storage container;

[0126] A blower that draws in air from the intake port and blows it through the filter to the outlet.

[0127] An electrostatic sensor, disposed on the isolation wall, detects electrostatic capacitance; and

[0128] The control unit stores the electrostatic capacitance detected by the electrostatic sensor.

[0129] The cavity extends horizontally inward from one side of the main body shell.

[0130] The electrostatic sensor is positioned on the isolation wall, facing the water inside the water storage container across the side of the container.

[0131] When the water storage container is installed in the cavity, the electrostatic capacitance detected by the electrostatic sensor is larger than that detected by the electrostatic sensor when the water storage container is not installed in the cavity.

[0132] When the cavity is equipped with a water storage container holding water at a specified level, the electrostatic capacitance detected by the electrostatic sensor is greater than when the cavity is equipped with an empty water storage container.

[0133] The control unit detects the assembly of the water storage container into the cavity and the water level at the specified level by detecting changes in electrostatic capacitance through the electrostatic sensor.

[0134] According to the present invention, the water storage container has fewer irregularities, thereby making it easier to maintain.

[0135] Embodiment 2 of the present invention will be described with reference to the accompanying drawings.

[0136] Figure 15 and Figure 16 This is a perspective view of the air conditioning device 1001 according to Embodiment 2 of the present invention. It should be noted that... Figure 15 This is a diagram obtained by observing the air conditioning unit 1001 from an obliquely upward view of the front surface side. Figure 16 This is obtained by observing the air conditioning device 1001 of the panel 1009 from an obliquely upward view on the front surface side. Figure 17 .in addition, Figure 17 This is a diagram showing the cross-sectional structure of the air conditioning unit 1001 as viewed from the right side when facing the front surface of the air conditioning unit 1001.

[0137] It should be noted that, in the following text, air conditioning unit 1001 may sometimes be referred to as... Figure 15 The vertical direction is defined as "up-down direction" and the horizontal direction as "left-right direction" in the set state shown (hereinafter also referred to as "set state"). Furthermore, in the set state, the side of the air conditioner 1001 with the plate portion 1009 is designated as the "right side surface," and the side facing the right side of the air conditioner 1001 is designated as the "left side surface." When viewed from the right side surface of the air conditioner 1001, the left side is the "front surface," and when viewed from the right side surface of the air conditioner 1001, the right side is the "back surface."

[0138] The detailed structure of the air conditioning unit 1001 will be described below. For example... Figures 15 to 17 As shown, the air conditioning device 1001 of Embodiment 2 includes a main body housing 1002 in a generally box-shaped form, a blower 1003, an air conditioning unit 1004, a control unit 1005, and an operation unit 1006.

[0139] The main body shell 1002 is a long, roughly box-shaped structure, and is provided with an air intake 1007, an air outlet 1008, and a plate 1009.

[0140] The air intake 1007 is provided on the left and right sides of the main body shell 1002.

[0141] The blow outlet 1008 is located on the back side of the top surface of the main body housing 1002. An operation part 1006 is provided on the front surface side of the top surface of the main body housing 1002.

[0142] A closable panel 1009 is provided on one side of the main body housing 1002. When the panel 1009 is opened, an air conditioning unit 1004 is provided inside the main body housing 1002.

[0143] like Figure 17 As shown, an air passage 1011 (illustrated by an arrow) connecting the air intake 1007 and the air outlet 1008 is provided inside the main body casing 1002. In the air passage 1011, starting from the air intake 1007, an air conditioning unit 1004 (including a water storage container 1019 and a filter section described later), a blower 1003, and an air outlet 1008 are arranged in sequence.

[0144] The blower 1003 is located in the upper part of the main body housing 1002 and includes a motor 1012, a fan 1013 that rotates by means of the motor 1012, and a vortex-shaped housing 1014 that surrounds them.

[0145] The motor unit 1012 is a single-shaft motor. The rotation shaft 1015 of the motor unit 1012 extends from the front surface side of the main body housing 1002 to the rear side.

[0146] The fan unit 1013 is a Sirocco fan and is fixed to the front end of the rotating shaft 1015 that extends horizontally from the motor unit 1012.

[0147] The housing portion 1014 is provided with an outlet 1016 and an intake port (not shown). The outlet 1016 is located on the upper surface of the housing portion 1014 near the main body housing 1002. The intake port is located on the rear side of the housing portion 1014 near the main body housing 1002. When the fan portion 1013 is rotated by the motor portion 1012, air outside the housing portion 1014 flows into the housing portion 1014 through the intake port and is blown out of the housing portion 1014 through the outlet 1016.

[0148] Figure 18 This is a perspective view of the air conditioning device 1001 according to Embodiment 2 of the present invention. Figure 18 This is a view of the air conditioning device 1001 from an obliquely upward perspective on the front surface side, with the plate 1009 opened and the can component 1020 removed. Figure 19 This is a perspective view of the air conditioning device according to Embodiment 2 of the present invention. Figure 19 This is a view of the air conditioning unit 1001 from an obliquely upward perspective on the front surface side, with the plate 1009 opened and the water storage container 1019 removed.

[0149] like Figure 18 and Figure 19 As shown, the air conditioning unit 1004 is disposed within the cavity portion 1010. The cavity portion 1010 is a hole recessed from one side (right side) of the main body housing 1002 toward the other side (left side) of the main body housing 1002. The air conditioning unit 1004 can be removed from inside the cavity portion 1010 to outside the main body housing 1002. The air conditioning unit 1004 includes a water storage container 1019, a tank component 1020, and a gas-liquid contact portion 1021.

[0150] The water storage container 1019 is made of resin. It has a bowl shape with an open upper surface and a structure capable of storing water. An example of the material is ABS resin. The water storage container 1019 is located at the lower part of the main body shell 1002 and is configured to be slidably installed and removed from the cavity portion 1010 by opening the plate portion 1009. The water storage container 1019 stores water supplied from the tank component 1020.

[0151] Figure 20 This is an exploded perspective view of the tank component 1020 according to Embodiment 2 of the present invention. Figure 21 This is a diagram showing the cross-sectional structure of the tank component 1020 according to Embodiment 2 of the present invention. Figure 22 This is a diagram showing the cross-sectional structure of the water storage container 1019 according to Embodiment 2 of the present invention. Figure 23 This is a cross-sectional view showing the state in which the water storage container 1019 is equipped with the tank component 1020 and the gas-liquid contact portion 1021 according to Embodiment 2 of the present invention.

[0152] like Figures 20 to 23 As shown, the tank component 1020 is disposed in the lower part inside the main body shell 1002 and has a structure that allows it to be loaded and unloaded relative to the water storage container 1019. A tank holding part 1023 protruding upward is provided on the bottom surface of the water storage container 1019.

[0153] The tank component 1020 is assembled at the position of the tank holding part 1023 provided on the bottom surface of the water storage container 1019. The tank component 1020 has a tank 1024 for storing water, an opening 1024a provided on the lower surface of the tank 1024 and communicating between the inside and outside of the tank 1024, and a cover 1025 covering the opening 1024a.

[0154] A hole 1025b is provided in the center of the cover 1025, which communicates vertically; a valve 1026 for opening and closing the hole 1025b; and a cylindrical portion 1025a that surrounds the hole 1025b, with its central axis extending vertically and protruding downward from the cover 1025. Additionally, multiple notches 1025c are provided at the lower end of the cylindrical portion 1025a of the cover 1025. The hole 1025b is positioned at the center when viewed along the central axis of the cylindrical portion 1025a.

[0155] In the above structure, when the opening 1024a of the tank 1024 faces downwards and the tank member 1020 is installed in the position of the tank holding part 1023 of the water storage container 1019, the valve part 1026 is opened by means of the tank holding part 1023. That is, when water is put into the tank member 1020 and the tank member 1020 is installed in the position of the tank holding part 1023, the valve part 1026 moves upwards by means of the tank holding part 1023, so that the hole 1025b of the cover 1025 is open. When the hole 1025b of the cover 1025 is open, the water in the tank 1024 is supplied to the water storage container 1019 through the hole 1025b of the cover 1025, so that water accumulates in the water storage container 1019.

[0156] When the water level in the water storage container 1019 rises and reaches the upper end of the multiple notches 1025c provided at the lower end of the cylindrical portion 1025a of the cover 1025, the hole 1025b of the tank member 1020 is water-sealed, thus stopping the water supply. Here, water remains inside the tank member 1020, so even if the water level in the water storage container 1019 drops, water from the tank 1024 is supplied to the water storage container 1019 at any time. That is, the water level in the water storage container 1019 is kept constant.

[0157] Figure 24 This is a perspective view of the water storage container 1019 of Embodiment 2 of the present invention, in which the gas-liquid contact portion 1021 is assembled.

[0158] like Figure 22 and Figure 24 As shown, the gas-liquid contact portion 1021 is a component that brings water stored in the water storage container 1019 into contact with indoor air drawn into the main body casing 1002 by the blower 1003. The gas-liquid contact portion 1021 includes a filter 1027, a filter frame 1028, and a drive unit 1029.

[0159] The filter 1027 is cylindrical and has a structure with holes on its circumference for air to pass through. The filter 1027 is assembled to the filter frame 1028 such that one end of the filter 1027 is immersed in water in the water storage container 1019.

[0160] The filter frame 1028 is rotatably supported on a bearing portion 1030 provided in the water storage container 1019. The filter 1027 and the filter frame 1028 have a structure that allows them to rotate by means of a drive portion 1029.

[0161] The blower 1003 draws indoor air from the main body casing 1002 through the air intake 1007 and blows it through the filter 1027, which is immersed in water stored in the water storage container 1019 at its lower end. The air blown into the filter 1027 comes into contact with the water stored in the filter 1027, thereby becoming air with higher humidity, and is then blown out of the outlet 1008 into the room outside the main body casing 1002.

[0162] The control unit 1005 controls the drive unit 1029 of the gas-liquid contact section 1021 and the motor unit 1012 of the blower 1003. Specifically, the control unit 1005 controls the operation of the drive unit 1029 of the gas-liquid contact section 1021 and the rotational speed of the fan unit 1013 of the blower 1003, etc., according to the operation of the operation unit 1006.

[0163] When the fan unit 1013 rotates with the help of the motor unit 1012 of the blower 1003, air is delivered through the air passage 1011. When the fan unit 1013 rotates, in the air passage 1011, external air entering the main body housing 1002 from the air intake 1007 passes sequentially through the filter 1027, the blower 1003, and the outlet 1008 and is blown out of the main body housing 1002. The air conditioning device 1001 humidifies by blowing air into the filter 1027, which is immersed in water in the water storage container 1019, thereby vaporizing the water stored in the filter 1027.

[0164] Figure 25 This is a perspective view of the air conditioning device 1001 according to Embodiment 2 of the present invention. Figure 25 The figure shows the air conditioning device 1001 with the plate 1009 opened and the canister component 1020 removed, viewed from a slightly above side. Figure 26 This is a diagram showing the cross-sectional structure of the water storage container 1019 and the electrostatic sensor 1040 as viewed from the right side of the main body shell 1002 according to Embodiment 2 of the present invention. Figure 27 This is a block diagram showing the structure of the air conditioning device 1001 according to Embodiment 2 of the present invention.

[0165] like Figure 17 , Figure 25 , Figure 26 and Figure 27 As shown, a portion of the cavity 1010, which is a hole extending horizontally from one side (right side) of the main body housing 1002 into the interior of the main body housing 1002, is surrounded by an isolation wall 1039 within the main body housing 1002. A water storage container 1019 is detachably mounted and dismounted horizontally within this cavity 1010 surrounded by the isolation wall 1039. An electrostatic capacitance sensor 1040 for detecting electrostatic capacitance is provided in the isolation wall 1039. A control unit 1005 is provided within the main body housing 1002. This control unit 1005 stores the electrostatic capacitance detected by the electrostatic capacitance sensor 1040 and can detect the assembly of the water storage container 1019 into the cavity 1010 and the water level at a predetermined level within the water storage container 1019 based on changes in the electrostatic capacitance detected by the electrostatic capacitance sensor 1040.

[0166] Viewed from the front surface of the air conditioning unit 1001, the partition wall 1039 includes surfaces respectively disposed on the front side, depth side, and left side of the water storage container 1019. The partition wall 1039 is made of resin, an example of which is ABS resin. The partition wall 1039 is a structure that surrounds at least a portion of the rear side, left side, and front surface side of the main housing 1002 in the water storage container 1019.

[0167] Figure 26This diagram shows a cross-sectional view of the area near the electrostatic sensor 1040, as viewed from the right side when facing the front surface of the air conditioner. The electrostatic sensor 1040 detects electrostatic capacitance. The electrostatic sensor 1040 is a sensor that detects static electricity generated by an object being charged and converts it into an electrical signal for detection, enabling the detection of the object's presence and location without contact. The electrostatic sensor 1040 has a pair of electrodes, and an electrostatic capacitance exists between the electrodes. The electrostatic capacitance varies depending on the distance between the electrostatic sensor 1040 and the water. If the distance between the electrostatic sensor 1040 and the water increases, the electrostatic capacitance detected by the electrostatic sensor 1040 decreases. The electrostatic sensor 1040 is positioned on the side of an isolation wall 1039 perpendicular to the water surface, facing the water in the water storage container 1019 across the side of the water storage container 1019. Here, the configuration structure of the water storage container 1019 and the isolation wall 1039 is such that the electrostatic capacitance detected by the electrostatic sensor 1040 is larger when the water storage container 1019 is installed in the cavity 1010 than when the water storage container 1019 is not installed in the cavity 1010. The electrostatic capacitance detected by the electrostatic sensor 1040 is larger when the water storage container 1019 containing a specified water level is installed in the cavity 1010 than when the water storage container 1019 without water is installed in the cavity 1010.

[0168] Specifically, when the cavity 1010 is equipped with a water storage container 1019 that is not filled with water, the electrostatic sensor 1040 detects the electrostatic capacitance of the water storage container 1019 opposite to the electrostatic sensor 1040. When the cavity 1010 is not equipped with the water storage container 1019, the electrostatic sensor 1040 detects the electrostatic capacitance of the isolation wall 1039 opposite to the electrostatic sensor 1040. Since the water storage container 1019 and the isolation wall 1039 are made of resin, there is no significant difference in the electrostatic capacitance between the water storage container 1019 and the isolation wall 1039. However, the distance between the electrostatic sensor 1040 and the water storage container 1019 is shorter than the distance between the electrostatic sensor 1040 and the isolation wall 1039. Therefore, the electrostatic capacitance detected by the electrostatic sensor 1040 when the water storage container 1019 is installed in the cavity 1010 is greater than the electrostatic capacitance detected by the electrostatic sensor 1040 when the water storage container 1019 is not installed in the cavity 1010.

[0169] Furthermore, when the cavity 1010 is equipped with a water storage container 1019 that is not filled with water, the electrostatic sensor 1040 detects the electrostatic capacitance of the water storage container 1019 opposite to the electrostatic sensor 1040. On the other hand, when the cavity 1010 is equipped with a water storage container 1019 containing water at a predetermined level, the electrostatic sensor 1040 detects the electrostatic capacitance of the water storage container 1019 opposite to the electrostatic sensor 1040 and the electrostatic capacitance of the water inside the water storage container 1019 opposite to the electrostatic sensor 1040. Since the water storage container 1019 is made of resin, the electrostatic capacitance of the water inside the water storage container 1019 is greater than the electrostatic capacitance of the water storage container 1019 itself. In other words, the electrostatic capacitance detected by the electrostatic sensor 1040 is greater when the cavity 1010 is equipped with a water storage container 1019 containing water at a specified level than when the cavity 1010 is equipped with a water storage container 1019 that has not been filled with water.

[0170] Therefore, the control unit 1005 can detect the assembly of the water storage container 1019 into the cavity 1010 and the water level at a predetermined level in the water storage container 1019 by detecting changes in electrostatic capacitance detected by the electrostatic sensor 1040. When the control unit 1005 detects the assembly of the water storage container 1019 and the water level at a predetermined level in the water storage container 1019 by the electrostatic sensor 1040, it controls the operation of the drive unit 1029 of the gas-liquid contact part 1021 and the rotation speed of the fan unit 1013 of the blower 1003, etc., according to the operation of the operation unit 1006.

[0171] Furthermore, the electrostatic sensor 1040 is disposed on the outer surface of the isolation wall 1039. Specifically, the electrostatic sensor 1040 is positioned opposite the water storage container 1019, separated from it by the isolation wall 1039 located behind the water storage container 1019 when viewed from the front surface of the air conditioning unit 1001. The isolation wall 1039 spatially isolates the electrostatic sensor 1040 from the cavity portion 1010. Therefore, the user cannot contact the electrostatic sensor 1040, ensuring safety and preventing malfunctions, deterioration, or misalignment of the electrostatic sensor 1040.

[0172] Furthermore, the minimum distance between the portion of the isolation wall 1039 in which the electrostatic sensor 1040 is located and the side of the water storage container 1019 is smaller than the thickness of the side plate of the water storage container 1019. Specifically, in order to make the water storage container 1019 removable, a gap is provided between the isolation wall 1039 located behind the water storage container 1019 and the water storage container 1019 when viewed from the front surface of the air conditioning device 1001. This gap is not uniform and has an inclination. The minimum distance of this gap is smaller than the thickness of the side plate of the water storage container 1019 opposite to the electrostatic sensor 1040. The thickness of the side plate of the water storage container 1019 is, for example, 1.0 mm to 3.0 mm. As a result, the distance between the electrostatic sensor 1040 and the liquid in the water storage container 1019 can be brought closer, and therefore, the electrostatic sensor 1040 can detect changes in electrostatic capacitance with good sensitivity.

[0173] Furthermore, the minimum distance between the portion of the isolation wall 1039 in which the electrostatic sensor 1040 is located and the side of the water storage container 1019 is smaller than the thickness of the portion of the isolation wall 1039 in which the electrostatic sensor 1040 is located. Specifically, the thickness of the portion of the isolation wall 1039 in which the electrostatic sensor 1040 is located is, for example, 0.5 mm to 3.0 mm. This allows the distance between the electrostatic sensor 1040 and the liquid in the water storage container 1019 to be close, thus enabling the electrostatic sensor 1040 to detect changes in electrostatic capacitance with good sensitivity.

[0174] Furthermore, the portion of the isolation wall 1039 where the electrostatic sensor 1040 is located has the smallest thickness. Specifically, while the isolation wall 1039 has a certain thickness to ensure product strength, the portion where the electrostatic sensor 1040 is located only needs to have a thickness sufficient to hold the sensor in place. Therefore, the portion of the isolation wall 1039 with the electrostatic sensor 1040 has the smallest thickness compared to the portion without it. This allows the electrostatic sensor 1040 to be positioned close to the liquid in the water storage container 1019, enabling the sensor 1040 to detect changes in electrostatic capacitance with high sensitivity.

[0175] Figure 28 and Figure 29 This is a cross-sectional view obtained from above, showing the air conditioning device 1001 of Embodiment 2 of the present invention. Figure 28 and Figure 29 The heights of their cross-sections are different. For example... Figure 27 and Figure 28 As shown, a distance limiting part 1041 is provided to limit the distance between the electrostatic sensor 1040 and the water storage container 1019. The distance limiting part 1041 has a front-side limiting part 1042 and a rear-side limiting part 1043.

[0176] With the water storage container 1019 assembled in the cavity 1010, the front limiting part 1042 is positioned forward of the electrostatic sensor 1040 in the insertion direction of the water storage container 1019. Specifically, the front limiting part 1042 has a front water storage limiting part 1042a provided in the water storage container 1019 and a front isolation limiting part 1042b provided in the isolation wall 1039.

[0177] The front water storage limiting part 1042a is a shape that allows the surface or protrusion to protrude from the water storage container 1019, or a shape that can accommodate the surface or protrusion.

[0178] The front isolation limiting portion 1042b is shaped to correspond to the front water storage limiting portion 1042a and can be inserted and removed. In addition, the distance between the front water storage limiting portion 1042a and the front isolation limiting portion 1042b is smaller than the minimum distance between the part of the isolation wall 1039 in which the electrostatic sensor 1040 is provided and the side of the water storage container 1019.

[0179] Therefore, the minimum distance between the portion of the isolation wall 1039 where the electrostatic sensor 1040 is installed and the front limiting portion 1042 of the side of the water storage container 1019 will not deviate from the minimum distance. Even if the minimum distance deviates due to the loading and unloading of the water storage container 1019, the deviation of the electrostatic capacitance can be reduced. Therefore, the control unit 1005 can detect the loading of the water storage container 1019 into the cavity portion 1010 and the water level at the specified level.

[0180] With the water storage container 1019 assembled in the cavity 1010, the rear-side limiting part 1043 is positioned rearward of the electrostatic sensor 1040 in the insertion direction of the water storage container 1019. Specifically, the rear-side limiting part 1043 has a rear water storage limiting part 1043a provided in the water storage container 1019 and a rear isolation limiting part 1043b provided in the isolation wall 1039.

[0181] The rear water storage restriction portion 1043a is a shape formed by a surface protruding from the water storage container 1019 in a direction parallel to the isolation wall 1039 on which the electrostatic sensor 1040 is installed.

[0182] The rear isolation restriction portion 1043b is shaped to hook onto the rear water storage restriction portion 1043a. In addition, the distance between the rear water storage restriction portion 1043a and the rear isolation restriction portion 1043b is smaller than the minimum distance between the portion of the isolation wall 1039 in which the electrostatic sensor 1040 is installed and the side of the water storage container 1019.

[0183] Therefore, the minimum distance between the portion of the isolation wall 1039 where the electrostatic sensor 1040 is installed and the rear side restriction portion 1043 side of the side of the water storage container 1019 will not deviate from the minimum distance. Even if the minimum distance deviates due to the loading and unloading of the water storage container 1019, the deviation of the electrostatic capacitance can be reduced. Therefore, the control unit 1005 can detect the loading of the water storage container 1019 into the cavity portion 1010 and the water level at the specified level.

[0184] Figure 30 This is a cross-sectional view obtained by observing the air conditioning device 1001 of Embodiment 2 of the present invention from the front. (See figure) Figure 30 As shown, the cavity 1010 and the water storage container 1019 have a temporary fixing part 1044 that temporarily fixes the water storage container 1019 within the cavity 1010 when it is inserted into the cavity 1010 to a predetermined position. When the water storage container 1019 is temporarily fixed within the cavity 1010, the distance between the electrostatic sensor 1040 and the water storage container 1019 is limited by the front side limiting part 1042 and the rear side limiting part 1043.

[0185] The temporary fixing part 1044 is a claw-shaped member extending from the bottom surface of the cavity 1010 toward the inside of the cavity 1010. The water storage container 1019 is provided with a shape corresponding to the temporary fixing part 1044. When the water storage container 1019 is inserted into the cavity 1010, the temporary fixing part 1044 temporarily fixes the water storage container 1019 into the cavity 1010 by hooking it.

[0186] Therefore, by limiting the distance between the electrostatic sensor 1040 and the water storage container 1019, the electrostatic sensor 1040 can accurately detect electrostatic capacitance. Thus, the control unit 1005 can detect the assembly of the water storage container 1019 and the presence or absence of liquid within it.

[0187] This invention is expected to be utilized as an air conditioning device for homes, office buildings, and the like.

[0188] (Implementation Method 3)

[0189] Conventional air conditioning devices include a main casing, a water storage container, a water supply mechanism for automatically supplying water to maintain a constant water level in the water storage container, and a mechanism for detecting the presence or absence of liquid in the water storage container. If two detection mechanisms are provided to detect the presence or absence of liquid in the water storage container, there is a problem of increasing the size of the device. Therefore, two detection mechanisms can be implemented through a single detection mechanism (for example, see Patent Document 2).

[0190] In conventional structures for detecting the presence or absence of liquid in a water storage container, a float with an internal magnet that moves according to the water level is installed inside the container, and a detection element capable of detecting the magnetic field of the magnet is located on the outer casing. Because the float with the internal magnet, which moves according to the water level, is freely rotatable within the container, it creates uneven surfaces, leading to reduced maintainability of the container. Furthermore, repeated water supply causes limescale, such as calcium from tap water, to precipitate on the sides and bottom of the container. This limescale retains water, and therefore, depending on the detection method, the accuracy of water level detection can decrease even when limescale has accumulated to the point where there is no water.

[0191] Therefore, in order to minimize unevenness and achieve a water storage container with good maintainability, the present invention provides a mechanism for detecting the presence or absence of water storage container and liquid in water storage container with high precision without using a float with built-in magnets.

[0192] An air conditioning device according to one aspect of the present invention includes: a main housing having an air intake and an air outlet; a water storage container disposed in a cavity partially surrounded by an isolation wall within the main housing, and storing water; a blower that draws in air from the air intake containing water from the water storage container and blows it through the air outlet; an electrostatic sensor disposed on the isolation wall and detecting electrostatic capacitance; and a control unit that stores the electrostatic capacitance detected by the electrostatic sensor. The cavity extends horizontally inward from one side of the main housing, the electrostatic sensor is disposed such that it faces the water in the water storage container across the side of the water storage container from the isolation wall, the control unit detects a predetermined water level in the water storage container based on the electrostatic capacitance detected by the electrostatic sensor, and at least a portion of the air blown by the blower contacts the side of the water storage container.

[0193] Embodiment 3 of the present invention will be described with reference to the accompanying drawings.

[0194] Figure 31 and Figure 32 This is a perspective view of the air conditioning device 2001 according to Embodiment 3 of the present invention. It should be noted that... Figure 31 This is a diagram obtained by viewing the air conditioning unit 2001 from an obliquely upward angle from the front surface side. Figure 32 This was obtained by observing the air conditioning device 2001 of the panel 2009 from an angled upward view on the front surface side. Figure 33 .in addition, Figure 33 This is a diagram showing the cross-sectional structure of the air conditioning unit 1001 as viewed from the right side when facing the front surface of the air conditioning unit 1001.

[0195] It should be noted that, in the following text, air conditioning unit 2001 may sometimes be referred to as... Figure 31 The vertical direction is defined as "up-down direction" and the horizontal direction as "left-right direction" in the set state shown (hereinafter also referred to as "set state"). Furthermore, in the set state of the air conditioner 2001, the side with the plate 2009 is designated as the "right side surface," and the side opposite the right side of the air conditioner 2001 is designated as the "left side surface." When viewed from the right side surface of the air conditioner 2001, the left side is the "front surface," and the right side is the "back surface."

[0196] The detailed structure of the air conditioning unit 2001 is described below. For example... Figures 31 to 33 As shown, the air conditioning device 2001 of Embodiment 3 includes a main body housing 2002 in a generally box-shaped form, a blower 2003, an air conditioning unit 2004, a control unit 2005, and an operation unit 2006.

[0197] The main body shell 2002 is roughly box-shaped with a longitudinal shape, and is provided with an air intake 2007, an air outlet 2008 and a plate 2009.

[0198] The air intake 2007 is provided on the left and right sides of the main body shell 2002.

[0199] The blow outlet 2008 is located on the back side of the top surface of the main body housing 2002. The operating part 2006 is located on the front surface side of the top surface of the main body housing 2002.

[0200] A closable panel 2009 is provided on one side of the main body shell 2002. When the panel 2009 is opened, an air conditioning unit 2004 is provided inside the main body shell 2002.

[0201] like Figure 33 As shown, an air passage 2011 (illustrated by an arrow) connecting the air intake 2007 and the air outlet 2008 is provided inside the main body casing 2002. In the air passage 2011, starting from the air intake 2007, an air conditioning unit 2004 (including the water storage container 2019 and filter section described later), a blower 2003, and an air outlet 2008 are arranged in sequence.

[0202] The blower 2003 is located in the upper part of the main body housing 2002 and includes a motor unit 2012, a fan unit 2013 that rotates by means of the motor unit 2012, and a vortex-shaped housing unit 2014 that surrounds them.

[0203] The motor unit 2012 is a single-shaft motor. The motor unit 2012 and the rotating shaft 2015 of the motor unit 2012 extend from the front surface side of the main body housing 2002 to the rear side.

[0204] The fan unit 2013 is a Sirocco fan and is fixed to the front end of the rotating shaft 2015 that extends horizontally from the motor unit 2012.

[0205] The housing portion 2014 is provided with an exhaust port 2016 and an intake port (not shown). The exhaust port 2016 is located on the upper surface of the housing portion 2014 near the main body outer shell 2002. The intake port is located on the rear side of the housing portion 2014 near the main body outer shell 2002. When the fan portion 2013 is rotated by the motor portion 2012, air outside the housing portion 2014 flows into the housing portion 2014 through the intake port and is blown out of the housing portion 2014 through the exhaust port 2016.

[0206] Figure 34 This is a perspective view of the air conditioning device 2001 according to Embodiment 3 of the present invention. Figure 34 This is a view of the air conditioning unit 2001 from an obliquely upward perspective on the front surface side, with the plate 2009 opened and the tank component 2020 removed. Figure 35 This is a perspective view of the air conditioning device according to Embodiment 3 of the present invention. Figure 35 This is a diagram taken from an obliquely upward view of the air conditioning unit 2001 with the plate 2009 open and the water storage container 2019 removed.

[0207] like Figure 34 and Figure 35 As shown, the air conditioning unit 2004 is disposed within the cavity portion 2010. The cavity portion 2010 has a recessed hole extending from one side (right side) of the main body housing 2002 toward the other side (left side) of the main body housing 2002. The air conditioning unit 2004 can be removed from inside the cavity portion 2010 to outside the main body housing 2002. The air conditioning unit 2004 includes a water storage container 2019, a tank component 2020, and a gas-liquid contact portion 2021.

[0208] The water storage container 2019 is made of resin. It has a bowl shape with an open top surface and a structure capable of storing water. An example of the material is ABS resin. The water storage container 2019 is located at the lower part of the main body shell 2002 and is configured to be detachable from the cavity portion 2010 by opening the plate portion 2009 and sliding horizontally. The water storage container 2019 stores water supplied from the tank component 2020.

[0209] Figure 36 This is an exploded perspective view of the tank component 2020 according to Embodiment 3 of the present invention. Figure 37 This is a diagram showing the cross-sectional structure of the tank component 2020 according to Embodiment 3 of the present invention. Figure 38This is a diagram showing the cross-sectional structure of the water storage container 2019 according to Embodiment 3 of the present invention. Figure 39 This is a cross-sectional view showing the state in which the water storage container 2019 is equipped with the tank component 2020 and the gas-liquid contact portion 2021 according to Embodiment 3 of the present invention.

[0210] like Figures 36 to 39 As shown, the tank component 2020 is located in the lower part inside the main body shell 2002 and has a structure that allows it to be loaded and unloaded relative to the water storage container 2019. A tank holding part 2023 protruding upward is provided on the bottom surface of the water storage container 2019.

[0211] The tank component 2020 is assembled at the position of the tank holding part 2023 provided on the bottom surface of the water storage container 2019. The tank component 2020 has a tank 2024 for storing water, an opening 2024a provided on the lower surface of the tank 2024 and communicating between the inside and outside of the tank 2024, and a cover 2025 covering the opening 2024a.

[0212] A hole 2025b is provided in the center of the cover 2025, which communicates vertically; a valve 2026 for opening and closing the hole 2025b; and a cylindrical portion 2025a that surrounds the hole 2025b, with its central axis extending vertically and protruding downward from the cover 2025. Additionally, multiple notches 2025c are provided at the lower end of the cylindrical portion 2025a of the cover 2025. The hole 2025b is positioned at the center when viewed along the central axis of the cylindrical portion 2025a.

[0213] In the above structure, when the opening 2024a of the tank 2024 faces downwards and the tank member 2020 is installed in the position of the tank holding part 2023 of the water storage container 2019, the valve part 2026 is opened by means of the tank holding part 2023. That is, when water is put into the tank member 2020 and the tank member 2020 is installed in the position of the tank holding part 2023, the valve part 2026 moves upwards by means of the tank holding part 2023, so that the hole 2025b of the cover 2025 is open. When the hole 2025b of the cover 2025 is open, the water in the tank 2024 is supplied to the water storage container 2019 through the hole 2025b of the cover 2025, and thus water accumulates in the water storage container 2019.

[0214] When the water level in the storage container 2019 rises and reaches the upper end of the multiple notches 2025c provided at the lower end of the cylindrical portion 2025a of the cover 2025, the hole 2025b of the tank component 2020 is water-sealed, thus stopping the water supply. Here, water remains inside the tank component 2020, so even if the water level in the storage container 2019 drops, water from the tank 2024 is supplied to the storage container 2019. That is, the water level in the storage container 2019 is kept constant.

[0215] Figure 40 This is a perspective view of the water storage container 2019 of Embodiment 3 of the present invention, with the gas-liquid contact portion 2021 assembled thereon.

[0216] like Figure 38 and Figure 40 As shown, the gas-liquid contact portion 2021 is a component that brings water stored in the water storage container 2019 into contact with indoor air drawn into the main body housing 2002 by the blower 2003. The gas-liquid contact portion 2021 includes a filter 2027, a filter frame 2028, and a drive unit 2029.

[0217] The filter 2027 is cylindrical and has a structure with holes on its circumference for air to pass through. The filter 2027 is assembled to the filter frame 2028 such that one end of the filter 2027 is immersed in water in the water storage container 2019.

[0218] The filter frame 2028 is rotatably supported on a bearing portion 2030 provided in the water storage container 2019. The filter 2027 and the filter frame 2028 have a structure that allows them to rotate by means of a drive portion 2029.

[0219] The blower 2003 draws indoor air from the main body casing 2002 through the air intake 2007 and blows it through the filter 2027, which is immersed in water stored in the water storage container 2019. The air blown into the filter 2027 comes into contact with the water stored in the filter 2027, thus becoming air with higher humidity, and is blown out of the outlet 2008 into the room outside the main body casing 2002.

[0220] The control unit 2005 controls the drive unit 2029 of the gas-liquid contact section 2021 and the motor unit 2012 of the blower 2003. Specifically, the control unit 2005 controls the operation of the drive unit 2029 of the gas-liquid contact section 2021 and the rotational speed of the fan unit 2013 of the blower 2003, etc., according to the operation of the operation unit 2006.

[0221] When the fan unit 2013 rotates with the help of the motor unit 2012 of the blower 2003, air is delivered through the air passage 2011. As the fan unit 2013 rotates, external air entering the main housing 2002 from the intake port 2007 passes sequentially through the filter 2027, the blower 2003, and the outlet 2008 in the air passage 2011 before being blown out of the main housing 2002. The air conditioning unit 2001 humidifies the air by blowing air into the filter 2027, which is immersed in water in the water storage container 2019, thereby vaporizing the moisture stored in the filter 2027.

[0222] Figure 41This is a perspective view of the air conditioning device 2001 according to Embodiment 3 of the present invention. Figure 41 The image shows the air conditioning unit 2001 with the plate 2009 opened and the tank component 2020 removed, viewed from a slightly above side. Figure 42 This is a diagram showing the cross-sectional structure of the water storage container 2019 and the electrostatic sensor 2040 as viewed from the right side of the main body shell 2002 according to Embodiment 3 of the present invention. Figure 43 This is a block diagram showing the structure of the air conditioning device 2001 according to Embodiment 3 of the present invention.

[0223] like Figure 33 , Figure 41 , Figure 42 and Figure 43 As shown, a portion of the cavity 2010, which is a hole extending horizontally from one side (right side) of the main body housing 2002 into the interior of the main body housing 2002, is surrounded by an isolation wall 2039 within the main body housing. A water storage container is detachably mounted and dismounted horizontally within this cavity 2010 surrounded by the isolation wall 2039. An electrostatic capacitance sensor 2040 for detecting electrostatic capacitance is provided in the isolation wall 2039. A control unit 2005 is provided within the main body housing 2002. This control unit 2005 stores the electrostatic capacitance detected by the electrostatic capacitance sensor 2040 and can detect the assembly of the water storage container 2019 into the cavity 2010 and the water level at a predetermined level in the water storage container 2019 based on changes in the electrostatic capacitance detected by the electrostatic capacitance sensor 2040.

[0224] Viewed from the front surface of the air conditioning unit 2001, the partition wall 2039 includes surfaces respectively disposed on the front side, depth side, and left side of the water storage container 2019. The partition wall 2039 is made of resin, an example of which is ABS resin. The partition wall 2039 is a structure that surrounds at least a portion of the rear side, left side, and front surface side of the main body shell 2002 in the water storage container 2019.

[0225] Figure 42This diagram shows a cross-sectional structure near the electrostatic sensor 2040, viewed from the right side when facing the front surface of the air conditioning unit 2001. The electrostatic sensor 2040 detects electrostatic capacitance. The electrostatic sensor 2040 utilizes the fact that each object has a different electrostatic capacitance, detecting changes in objects in the space it can detect as changes in electrostatic capacitance, thus detecting the presence and position of objects without contact. The electrostatic sensor 2040 has a pair of electrodes. The electrostatic sensor 2040 may also have only one electrode. The electrostatic capacitance of the electrode varies depending on the distance between the electrostatic sensor 2040 and the water. For example, if the distance between the electrostatic sensor 2040 and the water increases, the electrostatic capacitance detected by the electrostatic sensor 2040 decreases. The electrostatic sensor 2040 is positioned opposite the water in the water storage container 2019, on the side of the isolation wall 2039 perpendicular to the water surface, separated from the side of the water storage container 2019. Here, the configuration structure of the water storage container 2019 and the isolation wall 2039 is such that the electrostatic capacitance detected by the electrostatic sensor 2040 is larger when the water storage container 2019 is installed in the cavity 2010 than when the water storage container 2019 is not installed in the cavity 2010. Furthermore, the electrostatic capacitance detected by the electrostatic sensor 2040 is larger when the water storage container 2019 containing a specified water level is installed in the cavity 2010 than when the water storage container 2019 without water is installed in the cavity 2010.

[0226] Specifically, when the cavity 2010 is equipped with a water storage container 2019 that is not filled with water, the electrostatic sensor 2040 detects changes in electrostatic capacitance caused by the water storage container 2019, in addition to the isolation wall 2039 opposite to the electrostatic sensor 2040. When the cavity 2010 is not equipped with the water storage container 2019, the electrostatic sensor 2040 detects the electrostatic capacitance of the isolation wall 2039 opposite to the electrostatic sensor 2040. The water storage container 2019 is made of resin, and resin has a larger electrostatic capacitance than air. Therefore, the electrostatic capacitance detected by the electrostatic sensor 2040 when the cavity 2010 is equipped with the water storage container 2019 is greater than the electrostatic capacitance detected by the electrostatic sensor 2040 when the cavity 2010 is empty and only air is present.

[0227] Furthermore, when the cavity 2010 is equipped with a water storage container 2019 that is not filled with water, the electrostatic sensor 2040 detects the electrostatic capacitance of the water storage container 2019 opposite to the electrostatic sensor 2040. On the other hand, when the cavity 2010 is equipped with a water storage container 2019 containing water at a predetermined level, the electrostatic sensor 2040 detects the electrostatic capacitance of the water storage container 2019 opposite to the electrostatic sensor 2040 and the electrostatic capacitance of the water inside the water storage container 2019 opposite to the electrostatic sensor 2040. Since the water storage container 2019 is made of resin, the electrostatic capacitance of the water inside the water storage container 2019 is greater than the electrostatic capacitance of the water storage container 2019 itself. In other words, the electrostatic capacitance detected by the electrostatic sensor 2040 is greater when the cavity 2010 is equipped with a water storage container 2019 containing water at a specified level than when the cavity 2010 is equipped with a water storage container 2019 without water.

[0228] Therefore, the control unit 2005 can detect the assembly of the water storage container 2019 into the cavity 2010 and the water level at a predetermined level in the water storage container 2019 by detecting changes in electrostatic capacitance detected by the electrostatic sensor 2040. When the control unit 2005 detects the assembly of the water storage container 2019 and the water level at a predetermined level in the water storage container 2019 by the electrostatic sensor 2040, it controls the operation of the drive unit 2029 of the gas-liquid contact part 2021 and the rotation speed of the fan unit 2013 of the blower 2003, etc., according to the operation of the operation unit 2006.

[0229] Furthermore, the electrostatic sensor 2040 is disposed on the outer surface of the isolation wall 2039. Specifically, the electrostatic sensor 2040 is positioned opposite the water storage container 2019, separated from it by the isolation wall 2039 located behind the water storage container 2019 when viewed from the front surface of the air conditioning unit 2001. The isolation wall 2039 spatially isolates the electrostatic sensor 2040 from the cavity portion 2010. This prevents the user from contacting the electrostatic sensor 2040, ensuring safety and preventing malfunctions, deterioration, and misalignment of the sensor.

[0230] Furthermore, the minimum distance between the portion of the isolation wall 2039 in which the electrostatic sensor 2040 is located and the side of the water storage container 2019 is smaller than the thickness of the side plate of the water storage container 2019. Specifically, in order to make the water storage container 2019 removable, a gap is provided between the isolation wall 2039 located behind the water storage container 2019 and the water storage container 2019 when viewed from the front surface of the air conditioning unit 2001. This gap is not uniform and may be inclined. The minimum distance of this gap is smaller than the thickness of the side plate of the water storage container 2019 opposite to the electrostatic sensor 2040. The thickness of the side plate of the water storage container 2019 is, for example, 1.0 mm to 3.0 mm. As a result, the distance between the electrostatic sensor 2040 and the liquid in the water storage container 2019 can be brought closer, and therefore, the electrostatic sensor 2040 can detect changes in electrostatic capacitance with good sensitivity.

[0231] Furthermore, the minimum distance between the portion of the isolation wall 2039 in which the electrostatic sensor 2040 is located and the side of the water storage container 2019 is smaller than the thickness of the portion of the isolation wall 2039 in which the electrostatic sensor 2040 is located. Specifically, the thickness of the portion of the isolation wall 2039 in which the electrostatic sensor 2040 is located is, for example, 0.5 mm to 3.0 mm. This allows the distance between the electrostatic sensor 2040 and the liquid in the water storage container 2019 to be close, thus enabling the electrostatic sensor 2040 to detect changes in electrostatic capacitance with good sensitivity.

[0232] Furthermore, the portion of the isolation wall 2039 where the electrostatic sensor 2040 is located has the smallest thickness. Specifically, while the isolation wall 2039 has a certain thickness to ensure product strength, the portion where the electrostatic sensor 2040 is located only needs to have a thickness sufficient to hold the sensor in place. Therefore, the portion of the isolation wall 2039 with the electrostatic sensor 2040 has the smallest thickness compared to the portion without it. This allows the electrostatic sensor 2040 to be positioned close to the liquid in the water storage container 2019, enabling the sensor 2040 to detect changes in electrostatic capacitance with high sensitivity.

[0233] Figure 44 and Figure 45 This is a cross-sectional view obtained from above, showing the air conditioning device 2001 of Embodiment 3 of the present invention. Figure 44 and Figure 45 The heights of their cross-sections are different. For example... Figure 44 and Figure 45 As shown, a distance limiting part 2041 is provided to limit the distance between the electrostatic sensor 2040 and the water storage container 2019. The distance limiting part 2041 has a front-side limiting part 2042 and a rear-side limiting part 2043.

[0234] With the water storage container 2019 assembled in the cavity 2010, the front limiting part 2042 is positioned forward of the electrostatic sensor 2040 in the insertion direction of the water storage container 2019. Specifically, the front limiting part 2042 has a front water storage limiting part 2042a provided in the water storage container 2019 and a front isolation limiting part 2042b provided in the isolation wall 2039.

[0235] The front water storage limiting part 2042a is a shape that allows the surface or protrusion to protrude from the water storage container 2019, or a shape that can accommodate the surface or protrusion.

[0236] The front isolation limiting portion 2042b is shaped to correspond to the front water storage limiting portion 2042a and can be inserted and removed. In addition, the distance between the front water storage limiting portion 2042a and the front isolation limiting portion 2042b is smaller than the minimum distance between the part of the isolation wall 2039 in which the electrostatic sensor 2040 is installed and the side of the water storage container 2019.

[0237] Therefore, the minimum distance between the portion of the isolation wall 2039 equipped with the electrostatic sensor 2040 and the front side restriction portion 2042 of the side of the water storage container 2019 will not deviate from the minimum distance. Even if the minimum distance deviates due to the loading and unloading of the water storage container 2019, the deviation of the electrostatic capacitance can be reduced. Therefore, the control unit 2005 can detect the loading of the water storage container 2019 into the cavity portion 2010 and the water level at the specified level.

[0238] With the water storage container 2019 assembled in the cavity 2010, the rear-side limiting part 2043 is positioned rearward of the electrostatic sensor 2040 in the insertion direction of the water storage container 2019. Specifically, the rear-side limiting part 2043 has a rear water storage limiting part 2043a provided in the water storage container 2019 and a rear isolation limiting part 2043b provided in the isolation wall 2039.

[0239] The rear water storage restriction portion 2043a is a shape formed by a surface protruding from the water storage container 2019 in a direction parallel to the isolation wall 2039 on which the electrostatic sensor 2040 is installed.

[0240] The rear isolation restriction portion 2043b is shaped to hook onto the rear water storage restriction portion 2043a. Furthermore, the distance between the rear water storage restriction portion 2043a and the rear isolation restriction portion 2043b is smaller than the minimum distance between the portion of the isolation wall 2039 where the electrostatic sensor 2040 is installed and the side of the water storage container 2019.

[0241] Therefore, the minimum distance between the portion of the isolation wall 2039 equipped with the electrostatic sensor 2040 and the rear side restriction portion of the side of the water storage container 2019 will not deviate from the minimum distance. Even if the minimum distance deviates due to the loading and unloading of the water storage container 2019, the deviation of the electrostatic capacitance can be reduced. Therefore, the control unit 2005 can detect the loading of the water storage container 2019 into the cavity 2010 and the water level at the specified level.

[0242] Figure 46 This is a cross-sectional view obtained by observing the air conditioning device 2001 of Embodiment 3 of the present invention from the front. (See figure) Figure 46 As shown, the cavity and the water storage container have a temporary fixing part 2044 that temporarily fixes the water storage container 2019 within the cavity 2010 when it is inserted into the cavity 2010 to a predetermined position. When the water storage container 2019 is temporarily fixed within the cavity 2010, the distance between the electrostatic sensor 2040 and the water storage container 2019 is limited by the front side limiting part 2042 and the rear side limiting part 2043.

[0243] The temporary fixing part 2044 is a claw-shaped member extending from the bottom surface of the cavity 2010 toward the inside of the cavity 2010. The water storage container 2019 is provided with a shape corresponding to the temporary fixing part 2044. When the water storage container 2019 is inserted into the cavity 2010, the temporary fixing part 2044 temporarily fixes the water storage container 2019 into the cavity 2010 by hooking it.

[0244] Therefore, by limiting the distance between the electrostatic sensor 2040 and the water storage container 2019, the electrostatic sensor 2040 can accurately detect electrostatic capacitance. Thus, the control unit 2005 can detect the assembly of the water storage container 2019 and the presence or absence of liquid within it.

[0245] In the air conditioning device 2001 described above, an electrostatic sensor 2040 is installed on the outer surface of the isolation wall 2039, positioned opposite the water in the water storage container 2019 across the side of the isolation wall 2039, to detect electrostatic capacitance. Furthermore, the control unit 2005 stores the electrostatic capacitance detected by the electrostatic sensor 2040 and detects a predetermined water level based on the electrostatic capacitance detected by the electrostatic sensor 2040. Therefore, in the air conditioning device 2001, the water level in the water storage container 2019 is detected by utilizing the characteristic that the electrostatic capacitance detected by the electrostatic sensor 2040 changes according to the surrounding substances, that is, the electrostatic capacitance changes according to the amount of water present near the electrostatic sensor 2040. Specifically, if the value of the electrostatic capacitance detected by the electrostatic sensor 2040 is lower than a threshold, the control unit 2005 considers the water storage container 2019 to be low on water and urges the user to supply water to the tank 2024. The user is prompted to supply water to tank 2024, for example, by illuminating or flashing a light (not shown) installed on the operation unit 2006. It should be noted that the "dry water" here does not necessarily mean that the water in the water storage container 2019 is completely empty; a state in which a small amount of water remains in the water storage container 2019 can be considered as a "dry water".

[0246] When such water supply is repeated, scale, composed of inorganic salts such as calcium, magnesium, and silica contained in tap water, precipitates on the sides or bottom of the water storage container 2019. Scale retains water; therefore, even when there is no water at the water level, the electrostatic sensor 2040 may falsely detect the presence of water due to the precipitated scale retaining water. In the air conditioning device 2001 of Embodiment 3, the following structure is provided to remove the moisture contained in the scale precipitated on the sides or bottom of the water storage container 2019 in a timely manner.

[0247] Figure 47 (a), (b), and (c) represent the relationship between electrostatic capacitance and water level. Figure 47 (a) represents the relationship between electrostatic capacitance and water level under normal conditions. The horizontal axis represents the electrostatic capacitance detected by the electrostatic sensor 2040, and the vertical axis represents the water level in the water storage container 2019. In this case, changes in the water level in the water storage container 2019 are captured as changes in electrostatic capacitance. Therefore, the electrostatic capacitance corresponding to the water level above the low water level is preset as a threshold, and when the electrostatic capacitance measured by the electrostatic sensor 2040 reaches the threshold, the control unit 2005 detects low water. The threshold is stored in the storage unit 2050. Figure 43 ).

[0248] In the aforementioned Figure 42In this design, an opening 2024a is provided on the upper side of the water storage container 2019, and a bottom 2062 is provided on the lower side of the water storage container 2019. Furthermore, a stepped surface 2064 extending horizontally is provided in the water storage container 2019 at a height between the opening 2024a and the bottom 2062. The stepped surface 2064 may also be inclined in a manner that descends towards the inner side of the water storage container 2019. The area of ​​the water storage container 2019 at the lower side of the stepped surface 2064 (the area of ​​the water surface when water is present at the lower side of the stepped surface 2064) is drastically reduced compared to the area of ​​the water storage container 2019 at the upper side of the stepped surface 2064 (the area of ​​the water surface when water is present at the upper side of the stepped surface 2064). The height corresponding to the stepped surface 2064 is defined as a boundary position 2066. For example, the boundary position 2066 is higher than the low water level. The boundary position 2066 may also be set as the low water level.

[0249] Because the area of ​​the water storage container 2019 changes drastically at boundary position 2066, the change in electrostatic capacitance relative to the water level at the lower part of boundary position 2066 is more abrupt than the change in electrostatic capacitance relative to the water level at the upper part of boundary position 2066. In other words, the step surface 2064 is provided so that near boundary position 2066, water rapidly moves away from the electrostatic sensor 2040, thus making it easy to detect low water levels by utilizing the abrupt change in electrostatic capacitance detected by the electrostatic sensor 2040. The electrostatic capacitance corresponding to boundary position 2066 is set to the aforementioned threshold.

[0250] When the air conditioning unit 2001 is in humidification operation, the water level in the water storage container 2019 drops, and water droplets adhere to the step surface 2064 or the wall of the water storage container 2019. When the moisture adhering to the step surface 2064 or the wall of the water storage container 2019 dries, the moisture precipitates out as scale. Figure 47 (b) represents the relationship between electrostatic capacitance and water level when scale retains water. Because scale retains water, the electrostatic capacitance detected by electrostatic sensor 2040 increases. That is, even if the water level in storage container 2019 is the same, the electrostatic capacitance detected by electrostatic sensor 2040 is higher when scale retains water at a level where there is no water, compared to the case where scale does not retain water (no scale on step surface 2064 or wall surface). As a result, the water level at which the electrostatic capacitance reaches the threshold becomes lower than the boundary position 2066 (dry water level). In other words, dry water is less easily detected.

[0251] Figure 47 (c) indicates from Figure 47(b) The relationship between electrostatic capacitance and water level under repeated water supply and dry conditions. Through repeated water supply and dry conditions, scale increases. Because the increased scale retains water, the electrostatic capacitance detected by electrostatic sensor 2040 remains at a high level and becomes saturated, thus not reaching the threshold. As a result, dry conditions are not detected.

[0252] In order to accurately detect the presence or absence of liquid in the water storage container 2019, the influence of water retention due to scale should be reduced. Therefore, the air conditioning device 2001 of Embodiment 3 is configured as follows. Figure 33 In this configuration, with the height of the air conditioning unit 2001 set to "10", the air intake 2007 has a height of approximately "0 to 6". As previously described, the blower 2003 blows air drawn in from the air intake 2007 through the air conditioning unit 2004 to the outlet 2008, but air is drawn in from various heights within the air intake 2007. Therefore, airflow from various heights exists in the air path 2011. Consequently, at least a portion of the air blown by the blower 2003 reaches the side surface (back side) of the step surface 2064 or the water storage container 2019 and comes into contact with it. By bringing the air into contact with the side surface of the step surface 2064 or the water storage container 2019, the moisture contained in the scale on the side surface of the step surface 2064 or the water storage container 2019 is removed.

[0253] According to Embodiment 3, at least a portion of the air blown by the blower 2003 contacts the side of the water storage container 2019, thus enabling early removal of moisture contained in the scale. Furthermore, since the moisture contained in the scale deposited on the side of the water storage container 2019 is removed early, the presence or absence of liquid in the water storage container 2019 can be detected with high precision without using a float with a built-in magnet, minimizing unevenness and achieving a maintainable water storage container 2019. Additionally, since a step is provided in the water storage container 2019, water can quickly move away from the electrostatic sensor 2040 near the low water level. Furthermore, because water quickly moves away from the electrostatic sensor 2040 near the low water level, the electrostatic capacitance detected by the electrostatic sensor 2040 changes drastically. Moreover, because the electrostatic capacitance detected by the electrostatic sensor 2040 changes drastically, the low water level can be easily detected.

[0254] (Implementation Method 4)

[0255] Next, Embodiment 4 will be described. Embodiment 4 involves the same air conditioning device 2001 as Embodiment 3. In Embodiment 4, processing is involved when the electrostatic capacitance detected by the electrostatic sensor 2040 is lower than a threshold. It should be noted that the threshold in Embodiment 4 is different from the threshold in Embodiment 3. The threshold in Embodiment 3 is as follows: Figure 47 The value shown in (a) is set for detecting low water levels. The threshold in Embodiment 4 can also be higher than the threshold in Embodiment 3. Hereinafter, the case where the threshold in Embodiment 4 is higher than the threshold in Embodiment 3 will be described. That is, a first threshold and a second threshold higher than the first threshold are set for detecting low water levels. It should be noted that when the water level in the water storage container 2019 is above the notch 2025c at the lower end of the cylindrical portion 2025a of the cover 2025, the second threshold is smaller than the electrostatic capacitance detected by the electrostatic sensor 2040. It can also be said that when the water level in the water storage container 2019 is above the notch 2025c at the lower end of the cylindrical portion 2025a of the cover 2025, the water in the water storage container 2019 is full. It should be noted that "full" here can also mean that the water in the water storage container 2019 is not 100% full. Here, the description will focus on the differences from Embodiment 3.

[0256] As mentioned above, the control unit 2005 compares the electrostatic capacitance detected by the electrostatic sensor 2040 with the threshold stored in the storage unit 2050. The electrostatic capacitance detected by the electrostatic sensor 2040 is equivalent to the detected water level. Figure 48 This represents the data table stored in the storage unit 2050. The data table shows the conditions for comparing electrostatic capacitance with a threshold (second threshold) and the airflow. The control unit 2005 determines the airflow as "A1" when the electrostatic capacitance is above the threshold (second threshold), and as "A2" when the electrostatic capacitance is below the threshold (second threshold). Here, the airflow "A2" is greater than the airflow "A1". The control unit 2005 operates the motor unit 2012 according to the determined airflow. That is, when the water level is close to low water, the airflow of the blower 2003 increases. It should be noted that if the airflow of the blower 2003 is originally set to high airflow (A2), the airflow of the blower 2003 does not change. Here, "A2" can be the maximum settable airflow. Alternatively, "A2" can also be an airflow more than half of the maximum settable airflow.

[0257] The main body of the apparatus, system, or method of this invention includes a computer. The computer executes a program to realize the function of the main body of the apparatus, system, or method of this invention. The computer has a processor as its main hardware structure, which operates according to the program. The type of processor is not limited as long as it can realize its function by executing the program. The processor consists of one or more electronic circuits including semiconductor integrated circuits (ICs) or LSIs (Large Scale Integrations). Multiple electronic circuits can be integrated into one chip or disposed on multiple chips. Multiple chips can be assembled in one device or disposed in multiple devices. The program is recorded on a non-transitory recording medium such as a computer-readable ROM, optical disk, or hard disk drive. The program can be pre-saved on the recording medium or supplied to the recording medium via a wide area communication network, including the Internet.

[0258] The operation of the air conditioning unit 2001 based on the above structure will be explained. Figure 49 This is a flowchart illustrating the control steps based on the airflow of the air conditioning unit 2001. The electrostatic sensor 2040 detects electrostatic capacitance (S10). If the electrostatic capacitance is above a threshold (second threshold) (Yes in S12), the control unit 2005 sets the airflow of the blower 2003 to A1 (S14). Conversely, if the electrostatic capacitance is not above the threshold (second threshold) (No in S12), the control unit 2005 sets the airflow of the blower 2003 to A2 (S16).

[0259] According to Embodiment 3, when the detected water level is lower than a threshold, the airflow of the blower 2003 is increased compared to when the detected water level is above the threshold, thus enabling the moisture contained in the scale to dry earlier. Furthermore, since the moisture contained in the scale dries earlier, the accuracy of dry water detection can be improved. Additionally, when scale exists at a position higher than the water surface (water level without water) (scale retaining water), the airflow of the blower 2003 can be increased, suppressing unnecessary high-volume operation. In other words, the drying operation of scale retaining water can be performed efficiently. Furthermore, when the detected electrostatic capacitance is lower than a threshold, the blower 2003 operates at a high airflow, thus enabling the moisture contained in the scale to dry earlier.

[0260] (Implementation Method 5)

[0261] Next, Embodiment 5 will be described. Embodiment 5 involves the same air conditioning device 2001 as described previously. When the air conditioning device 2001 performs humidification, the water level in the water storage container 2019 decreases over time. Therefore, the electrostatic capacitance detected by the electrostatic sensor 2040 also decreases over time. When the air conditioning device 2001 performs humidification, if the change in electrostatic capacitance detected by the electrostatic sensor 2040 is small relative to the humidification amount, it is estimated that a large amount of scale will be deposited. In other words, the water level estimated based on the electrostatic capacitance detected by the electrostatic sensor 2040 may deviate from the actual water level due to the presence of water on the scale. In Embodiment 5, the air conditioning device 2001 increases the airflow of the blower 2003 to dry the moisture retained by the scale in a short time when the change in electrostatic capacitance detected by the electrostatic sensor 2040 is small relative to the humidification amount. Here, the differences from those described previously will be explained.

[0262] In Embodiment 5, the humidification rate of the air conditioning unit 2001 is estimated based on the relationship that if the temperature of the space where the air conditioning unit 2001 is installed (hereinafter referred to as "space temperature") is high, the humidification rate generated by the air conditioning unit 2001 per unit time increases. The air conditioning unit 2001 includes a temperature sensor (not shown) that measures the space temperature. The temperature sensor transmits the space temperature to the control unit 2005 (…). Figure 13 Output.

[0263] The control unit 2005 receives the ambient temperature from the temperature sensor. Referring to a data table stored in the storage unit 50, the control unit 2005 estimates the humidification rate generated by the air conditioning unit 2001 per unit time based on the ambient temperature. An example of a unit time is 1 hour. It should be noted that the unit time can be shorter or longer than 1 hour. Figure 50 (a), (b), and (c) represent data tables stored in storage unit 50. Figure 50 The data table shown in (a) establishes a correspondence between space temperature and humidification rate per unit time. Space temperatures are listed in ascending order as "B1", "B2", ..., "BN". Similarly, humidification rates per unit time are listed in ascending order as "C1", "C2", ..., "CN". That is, the higher the space temperature, the greater the humidification rate per unit time. It should be noted that, in detail, with the same humidity level in the space, the higher the space temperature, the greater the humidification rate per unit time. The values ​​in the data table were obtained in advance through simulation or experimentation. Figure 50 (b)-(c) are described later, return Figure 43 .

[0264] The control unit 2005 refers to another data table stored in the storage unit 2050 and obtains a threshold based on the humidification amount per unit time. The threshold refers to a threshold for the change in electrostatic capacitance per unit time. Figure 50 Another data table shown in (b) also establishes a correspondence between the humidification amount per unit time and the threshold. In the humidification amount per unit time, "C1", "C2", ..., "CN" are arranged in ascending order. In the threshold, "D1", "D2", ..., "DN" are arranged in ascending order. This relationship is based on the fact that if the humidification amount per unit time increases, the change in electrostatic capacitance per unit time also increases. The values ​​in the other data table were obtained in advance through simulation or experiment. Figure 50 (c) will be described later, return Figure 43 .

[0265] The control unit 2005 periodically receives the electrostatic capacitance detected by the electrostatic sensor 2040 and calculates the difference in electrostatic capacitance at unit time intervals, thereby obtaining the change in electrostatic capacitance per unit time. The control unit 2005 compares the obtained change in electrostatic capacitance per unit time with an obtained threshold. Figure 50 (c) indicates another data table stored in the storage unit 2050. This data table shows the conditions for comparing the change in electrostatic capacitance per unit time with a threshold and the airflow rate. The control unit 2005 determines the airflow rate as "A1" when the change in electrostatic capacitance per unit time is above the threshold, and as "A2" when the change in electrostatic capacitance per unit time is below the threshold. Here, the airflow rate "A2" is greater than the airflow rate "A1". The control unit 2005 operates the motor unit 2012 according to the determined airflow rate. That is, when the obtained change in electrostatic capacitance per unit time is less than the threshold, the airflow rate of the blower 2003 is increased compared to the case where the obtained change in electrostatic capacitance per unit time is above the threshold. In other words, when the change in electrostatic capacitance is less than the threshold, the control unit 2005 determines that the correct water level in the water storage container 2019 cannot be detected due to scale buildup, and sets the blower 2003 to a high airflow rate to dry the scale buildup. It should be noted that if the airflow of blower 2003 is originally set to high airflow (A2), the airflow of blower 2003 will not change. Here, "A2" can be the maximum airflow that can be set. Alternatively, "A2" can also be an airflow that is more than half of the maximum airflow that can be set.

[0266] The control unit 2005 can also illuminate or flash an indicator light (not shown) installed on the operation unit 2006 when the change in electrostatic capacitance per unit time is less than a threshold. Illuminating or flashing the indicator light (not shown) on the operation unit 2006 is equivalent to issuing a notification. Additionally, the indicator light (not shown) on the operation unit 2006 functions as a notification unit. By issuing a notification, the user performs a scale removal operation inside the water storage container 2019.

[0267] In the previous description, the control unit 2005 estimated the humidification amount based on the ambient temperature. The control unit 2005 can also estimate the humidification amount based on the humidity of the space where the air conditioning unit 2001 is installed (hereinafter referred to as "ambient humidity"). In this case, the ambient humidity is measured by a humidity sensor, and the control unit 2005 uses the relationship that a lower ambient humidity results in a higher humidification amount. Alternatively, the control unit 2005 can estimate the humidification amount based on the airflow set for the blower 2003. In this case, the control unit 2005 uses the relationship that a higher airflow results in a higher humidification amount. Furthermore, the control unit 2005 can also estimate the humidification amount based on a combination of two or more of the following: ambient temperature, ambient humidity, and airflow.

[0268] The operation of the air conditioning unit 2001 based on the above structure will be explained. Figure 51 This is a flowchart illustrating the control steps based on the airflow of the air conditioning unit 2001. A temperature sensor detects the ambient temperature (S50). The control unit 2005 estimates the humidification amount per unit time based on the ambient temperature (S52). The control unit 2005 determines a threshold based on the humidification amount per unit time (S54). The control unit 2005 obtains the change in electrostatic capacitance per unit time (S56). If the change is above the threshold (Yes in S58), the control unit 2005 sets the airflow of the blower 2003 to A1 (S60). On the other hand, if the electrostatic capacitance is not above the threshold (No in S58), the control unit 2005 sets the airflow of the blower 2003 to A2 (S62).

[0269] According to Embodiment 5, when the change in electrostatic capacitance detected by the electrostatic sensor 2040 is small relative to the humidification amount, the airflow of the blower 2003 is increased, thus enabling the early drying of moisture contained in the scale. Furthermore, when the change in electrostatic capacitance detected by the electrostatic sensor 2040 is small relative to the humidification amount, the blower 2003 is operated at a high airflow setting, thus enabling the early drying of moisture contained in the scale. Additionally, since a notification is executed when the change in electrostatic capacitance detected by the electrostatic sensor 2040 is small relative to the humidification amount, the presence of scale can be communicated to the user.

[0270] (Implementation Method 6)

[0271] Next, Embodiment 6 will be described. Embodiment 6 involves the same air conditioning device 2001 as described previously. The air conditioning device 2001 described previously includes an air path 2011 that blows air drawn in from the intake port 2007 through the filter 2027 to the outlet 2008. The air blown out of the outlet 2008 through the air path 2011 is humidified. The air conditioning device 2001 of Embodiment 6, in addition to such an air path 2011, also includes an air path that does not pass through the filter 2027, through which unhumidified air is blown out of the outlet 2008. Here, the focus will be on the differences from those described previously.

[0272] Figure 33 The airflow path 2011 shown blows air drawn in from the intake port 2007 through the filter 2027 to the outlet 2008. This airflow path 2011 is defined as a "humidifying airflow path". The air conditioning unit 2001 also includes a non-humidifying airflow path (not shown) that blows air drawn in from the intake port 2007 to the outlet 2008 without passing through the filter 2027. An air damper (not shown) is provided between the intake port 2007 and the filter 2027, and the ratio of air passing through the humidifying airflow path to air passing through the non-humidifying airflow path is adjusted accordingly with the angle of the air damper. A baffle may also be provided instead of an air damper.

[0273] The damper is connected to the control unit 2005, which controls the angle of the damper. For example, when the motor unit 2012 is operated according to the aforementioned airflow "A2", the control unit 2005 controls the angle of the damper by passing through the humidifying airflow path instead of the non-humidifying airflow path. Furthermore, in other situations, the control unit 2005 controls the angle of the damper, for example, by increasing the proportion of airflow passing through the humidifying airflow path as the ambient humidity decreases.

[0274] According to embodiment 6, since a humidifying air path and a non-humidifying air path are provided and can be switched, the moisture content of the air can be easily adjusted. Furthermore, during the drying operation for scale that retains water, the amount of air passing through the humidifying air path can be increased, thus promoting the drying of the scale.

[0275] The following is a summary of one aspect of the present invention.

[0276] (Project 1)

[0277] An air conditioning device (2001) comprises:

[0278] The main body shell (2002) has an air intake (2007) and an air outlet (2008);

[0279] A water storage container (2019) is disposed in a cavity (2010) partially surrounded by an isolation wall (2039) within the main body shell (2002) and stores water;

[0280] A blower (2003) draws in air containing water from the water storage container (2019) through the air intake (2007) and blows it through the outlet (2008).

[0281] An electrostatic sensor (2040) is disposed on the isolation wall (2039) and detects electrostatic capacitance; and

[0282] The control unit (2005) stores the electrostatic capacitance detected by the electrostatic sensor (2040).

[0283] The cavity (2010) extends horizontally inward from one side of the main body shell (2002).

[0284] The electrostatic sensor (2040) is positioned opposite the water in the water storage container (2019) from the side of the isolation wall (2039).

[0285] The control unit (2005) detects the specified water level in the water storage container (2019) based on the electrostatic capacitance detected by the electrostatic sensor (2040).

[0286] At least a portion of the air blown by the blower (2003) comes into contact with the side of the water storage container (2019).

[0287] (Project 2)

[0288] According to the air conditioning device (2001) described in Project 1, wherein,

[0289] The electrostatic sensor (2040) is disposed on the outer surface of the isolation wall (2039).

[0290] (Project 3)

[0291] According to the air conditioning device (2001) described in Project 1, wherein,

[0292] The water storage container (2019) has a bottom (2062) on the lower side and an opening (2024a) on the upper side.

[0293] The water storage container (2019) has a boundary position (2066) at the height between the bottom (2062) and the opening (2024a).

[0294] The change in electrostatic capacitance relative to the change in water level is more abrupt than the change in electrostatic capacitance relative to the change in water level at the portion above the boundary position (2066).

[0295] (Project 4)

[0296] According to the air conditioning device (2001) described in Project 1, wherein,

[0297] When the detected electrostatic capacitance is lower than the threshold, the control unit (2005) causes the blower (2003) to operate at more than half of the maximum set air volume.

[0298] (Project 5)

[0299] According to the air conditioning device (2001) described in Project 1, wherein,

[0300] When the detected electrostatic capacitance is lower than a threshold, the control unit (2005) increases the air volume of the blower (2003) compared to when the detected electrostatic capacitance is higher than the threshold.

[0301] (Project 6)

[0302] According to the air conditioning device (2001) described in Project 1, wherein,

[0303] The air conditioning device (2001) also includes a storage unit (2050) for storing a data table of the threshold values ​​of the change in electrostatic capacitance relative to the humidification amount generated by the air conditioning device (2001).

[0304] The control unit (2005) estimates the humidification amount generated by the air conditioning device (2001), and obtains a threshold value based on the estimated humidification amount and referring to the data table.

[0305] The control unit (2005) obtains the change in electrostatic capacitance, and if the obtained change in electrostatic capacitance is smaller than the threshold, it causes the blower (2003) to operate at an airflow of more than half of the maximum set airflow.

[0306] (Project 7)

[0307] According to the air conditioning device (2001) described in Project 1, wherein,

[0308] The air conditioning device (2001) also includes a storage unit (2050) for storing a data table of the threshold values ​​of the change in electrostatic capacitance relative to the humidification amount generated by the air conditioning device (2001).

[0309] The control unit (2005) estimates the humidification amount generated by the air conditioning device (2001), and obtains a threshold value based on the estimated humidification amount and referring to the data table.

[0310] The control unit (2005) obtains the change in electrostatic capacitance, and if the obtained change in electrostatic capacitance is smaller than the threshold, increases the air volume of the blower (2003).

[0311] (Project 8)

[0312] According to the air conditioning device (2001) described in Project 6 or Project 7, wherein,

[0313] The air conditioning unit (2001) also includes a notification unit that performs a notification when the change in electrostatic capacitance in the control unit (2005) is smaller than the threshold value.

[0314] (Project 9)

[0315] According to the air conditioning device (2001) described in Project 4 or Project 5, wherein,

[0316] The air conditioning device also includes a filter (2027) configured such that its lower end is immersed in water in the water storage container (2019).

[0317] When the airflow path that blows air drawn in from the air inlet (2007) through the filter (2027) to the outlet (2008) is defined as a humidifying airflow path, the air conditioning device also has a non-humidifying airflow path that blows air drawn in from the air inlet (2007) to the outlet (2008) without passing through the filter (2027), and a damper for adjusting the ratio of air passing through the humidifying airflow path to air passing through the non-humidifying airflow path.

[0318] When the detected electrostatic capacitance is lower than the threshold, the control unit (2005) controls the damper by passing through the humidifying air path instead of the non-humidifying air path.

[0319] (Project 10)

[0320] According to the air conditioning device (2001) described in Project 6 or Project 7, wherein,

[0321] The air conditioning device also includes a filter (2027) configured such that its lower end is immersed in water in the water storage container (2019).

[0322] When the airflow path that blows air drawn in from the air inlet (2007) through the filter (2027) to the outlet (2008) is defined as a humidifying airflow path, the air conditioning device also has a non-humidifying airflow path that blows air drawn in from the air inlet (2007) to the outlet (2008) without passing through the filter (2027), and a damper for adjusting the ratio of air passing through the humidifying airflow path to air passing through the non-humidifying airflow path.

[0323] When the change in the obtained electrostatic capacitance is smaller than the threshold, the control unit (2005) controls the damper by passing through the humidifying air path instead of the non-humidifying air path.

[0324] The present invention has been described above based on various embodiments. These embodiments are examples, and various modifications can be made to the combination of the above-described constituent elements or processing processes. Furthermore, those skilled in the art should understand that such modifications also fall within the scope of the present invention.

[0325] This invention is expected to be utilized as an air conditioning device for homes, office buildings, and the like.

[0326] Explanation of reference numerals in the attached figures

[0327] 1: Air conditioning unit; 2: Main casing; 3: Blower; 4: Air conditioning unit; 5: Control unit; 6: Operating unit; 7: Inlet; 8: Outlet; 9: Plate; 10: Cavity; 11: Air duct; 12: Motor; 13: Fan; 14: Housing; 15: Rotating shaft; 16: Spray outlet; 19: Water storage container; 19a: Opposing side; 20: Tank component; 21: Gas-liquid contact part; 23: Tank holding part; 24: Tank; 24a: Opening; 25: Cover; 25a: Cylinder part; 25b: Hole; 25c: Notch; 26: Valve; 27: Filter; 28: Filter frame; 29: Drive unit; 30: Bearing; 39: Isolation wall; 40: Electrostatic sensor; 41a: First water level; 4 1b: Second water level, 42: Distance changing section, 43: Recessed section, 44: Flat section, 1001: Air conditioning device, 1002: Main body shell, 1003: Blower, 1004: Air conditioning unit, 1005: Control unit, 1006: Operating unit, 1007: Air intake, 1008: Air outlet, 1009: Plate section, 1010: Cavity section, 1011: Air passage, 1012: Motor section, 1013: Fan section, 1014: Shell section, 1015: Rotating shaft, 1016: Spray outlet, 1019: Water storage container, 1020: Tank component, 1021: Gas-liquid contact section, 1023: Tank holding section, 1024: Tank, 1024a: Opening, 1025: Cover, 1025a: Cylinder section, 1025b: Hole, 1025c: Notch, 1026: Valve, 1027: Filter, 1028: Filter frame, 1029: Drive unit, 1030: Bearing unit, 1039: Isolation wall, 1040: Electrostatic sensor, 1041: Distance limiting unit, 1042: Front side limiting unit, 1043: Rear side limiting unit, 1042a: Front water storage limiting unit, 1042b: Front isolation limiting unit, 1043a: Rear water storage limiting unit, 1043b: Rear isolation limiting unit, 1044: Temporary fixing unit, 2001: Air conditioning unit, 2002: Main housing, 2003: Blower, 2004: Air conditioning unit, 2005: Control unit, 2006: Operation unit Components: 2007: Inlet; 2008: Outlet; 2009: Plate; 2010: Cavity; 2011: Air duct; 2012: Motor; 2013: Fan; 2014: Housing; 2015: Rotating shaft; 2016: Spray outlet; 2019: Water storage container; 2020: Tank component; 2021: Gas-liquid contact part; 2023: Tank holding part; 2024: Tank; 2024a: Opening; 2025: Cover; 2025a: Cylinder part; 2025b: Hole; 2026: Valve; 2027: Filter; 2028: Filter frame; 2029: Drive unit; 2030: Bearing unit; 2039: Isolation wall; 2040: Electrostatic sensor; 2041: Distance limiting unit.2042: Front side restriction section; 2042a: Front water storage restriction section; 2042b: Front isolation restriction section; 2043: Rear side restriction section; 2043a: Rear water storage restriction section; 2043b: Rear isolation restriction section; 2044: Temporary fixing section; 2050: Storage section; 2062: Bottom surface; 2064: Step surface; 2066: Boundary position.

Claims

1. An air conditioning device, wherein, The air conditioning device includes: The main body shell has an air intake and an air outlet; A water storage container is disposed in a cavity partially surrounded by an isolation wall inside the main body shell, and stores water; Filter, It is configured such that its lower end is immersed in water in the water storage container; A blower that draws in air from the intake port and blows it through the filter to the outlet. An electrostatic sensor is disposed on the isolation wall and detects electrostatic capacitance; as well as The control unit stores the electrostatic capacitance detected by the electrostatic sensor. The electrostatic sensor is positioned on the isolation wall, facing the water inside the water storage container across the side of the container. The water storage container has a distance-changing unit that changes the distance between the electrostatic sensor and the water in the water storage container from the distance at a first water level to the distance at a second water level (higher than the first water level). The control unit determines the water level in the water storage container as the first water level based on the change in electrostatic capacitance detected by the electrostatic sensor.

2. The air conditioning device according to claim 1, wherein, The distance change section has a recessed portion formed by the opposite side of the electrostatic sensor, which is the side facing the water storage container, being recessed into the water storage container.

3. The air conditioning device according to claim 2, wherein, The distance-changing part has a flat portion on the upper surface of the concave portion.

4. The air conditioning device according to claim 3, wherein, The recessed portion is disposed between the electrostatic sensor and the filter at the first water level, and the distance from the opposite side of the water storage container to the periphery of the filter side of the flat portion is longer than the distance from the periphery of the filter side of the flat portion to the filter.

5. The air conditioning device according to claim 3 or 4, wherein, The flat portion slopes downwards from the opposite side of the water storage container toward the inside of the water storage container.

6. The air conditioning device according to claim 3 or 4, wherein, The electrostatic sensor is positioned in the isolation wall, which is perpendicular to the water surface, and is positioned opposite the water in the water storage container, separated by the side of the water storage container and the isolation wall.

7. An air conditioning device, comprising: The main body shell has an air intake and an air outlet; A water storage container, which is detachably disposed in a cavity partially surrounded by an isolation wall inside the main body shell, and stores water; Filter, It is configured such that its lower end is immersed in water in the water storage container; A blower that draws in air from the intake port and blows it through the filter to the outlet. An electrostatic sensor is disposed on the isolation wall and detects electrostatic capacitance; as well as The control unit stores the electrostatic capacitance detected by the electrostatic sensor. The cavity extends horizontally inward from one side of the main body shell. The electrostatic sensor is positioned on the isolation wall, facing the water inside the water storage container across the side of the container. When the water storage container is installed in the cavity, the electrostatic capacitance detected by the electrostatic sensor is larger than that detected by the electrostatic sensor when the water storage container is not installed in the cavity. When the cavity is equipped with a water storage container holding water at a specified level, the electrostatic capacitance detected by the electrostatic sensor is greater than when the cavity is equipped with an empty water storage container. The control unit detects the assembly of the water storage container into the cavity and the water level at the specified level by detecting changes in electrostatic capacitance through the electrostatic sensor.

8. The air conditioning device according to claim 7, wherein, The electrostatic sensor is disposed on the outer surface of the isolation wall.

9. The air conditioning device according to claim 8, wherein, The minimum distance between the portion of the isolation wall in which the electrostatic sensor is located and the side of the water storage container is smaller than the thickness of the side plate of the water storage container.

10. The air conditioning device according to claim 9, wherein, The minimum distance between the portion of the isolation wall in which the electrostatic sensor is located and the side of the water storage container is smaller than the thickness of the portion of the isolation wall in which the electrostatic sensor is located.

11. The air conditioning device according to claim 10, wherein, For the isolation wall, the portion of the isolation wall in which the electrostatic sensor is located has the smallest thickness dimension.

12. The air conditioning device according to claim 11, wherein, The air conditioning device also includes a distance limiting unit that limits the distance between the electrostatic sensor and the water storage container.

13. The air conditioning device according to claim 12, wherein, The distance limiting part has a front limiting part, which is positioned in the insertion direction of the water storage container in the cavity, and is located in front of the electrostatic sensor.

14. The air conditioning device according to claim 13, wherein, The distance limiting part has a rear-side limiting part, which is positioned rearward of the electrostatic sensor in the insertion direction of the water storage container when the water storage container is assembled in the cavity.

15. The air conditioning device according to claim 14, wherein, The air conditioning device has a temporary fixing part, which temporarily fixes the water storage container in the cavity when the water storage container is inserted into the cavity to a predetermined position. When the water storage container is temporarily fixed inside the cavity, the distance between the electrostatic sensor and the water storage container is limited by the front side restriction and the rear side restriction.

16. An air conditioning device, comprising: The main body shell has an air intake and an air outlet; A water storage container is disposed in a cavity partially surrounded by an isolation wall inside the main body shell, and stores water; A blower that draws in air from the intake port containing water from the water storage container and blows it out of the outlet; An electrostatic sensor is disposed on the isolation wall and detects electrostatic capacitance; as well as The control unit stores the electrostatic capacitance detected by the electrostatic sensor. The cavity extends horizontally inward from one side of the main body shell. The electrostatic sensor is positioned opposite the water in the water storage container, separated from the side of the water storage container by the isolation wall. The control unit detects the water level at a predetermined level in the water storage container based on the electrostatic capacitance detected by the electrostatic sensor. At least a portion of the air blown by the blower comes into contact with the side of the water storage container.

17. The air conditioning device according to claim 16, wherein, The electrostatic sensor is disposed on the outer surface of the isolation wall.

18. The air conditioning device according to claim 16, wherein, The water storage container has a bottom on the lower side and an opening on the upper side. The water storage container has a boundary position at the height between the bottom and the opening. The change in electrostatic capacitance relative to the water level at the portion lower than the boundary position is more rapid compared to the change in electrostatic capacitance relative to the water level at the portion higher than the boundary position.

19. The air conditioning device according to claim 16, wherein, When the detected electrostatic capacitance is lower than the threshold, the control unit causes the blower to operate at more than half of the maximum set airflow.

20. The air conditioning device according to claim 16, wherein, When the detected electrostatic capacitance is lower than a threshold, the control unit increases the airflow of the blower compared to when the detected electrostatic capacitance is higher than the threshold.

21. The air conditioning device according to claim 16, wherein, The air conditioning device also includes a storage unit for storing a data table of threshold values ​​for changes in the electrostatic capacitance relative to the humidification amount generated by the air conditioning device. The control unit estimates the humidification amount generated by the air conditioning device, and obtains a threshold value based on the estimated humidification amount and the data table. The control unit acquires the change in electrostatic capacitance, and if the acquired change in electrostatic capacitance is smaller than the threshold, it causes the blower to operate at an airflow of more than half of the maximum set airflow.

22. The air conditioning device according to claim 16, wherein, The air conditioning device also includes a storage unit for storing a data table of threshold values ​​for changes in the electrostatic capacitance relative to the humidification amount generated by the air conditioning device. The control unit estimates the humidification amount generated by the air conditioning device, and obtains a threshold value based on the estimated humidification amount and the data table. The control unit acquires the change in electrostatic capacitance, and when the acquired change in electrostatic capacitance is less than the threshold, it increases the airflow of the blower compared to when the acquired change in electrostatic capacitance is greater than or equal to the threshold.

23. The air conditioning device according to claim 21 or 22, wherein, The air conditioning device also includes a notification unit that performs a notification when the change in electrostatic capacitance in the control unit is smaller than the threshold value.

24. The air conditioning device according to claim 19 or 20, wherein, The air conditioning device includes a filter configured such that its lower end is immersed in water in the water storage container. When the airflow path that blows air drawn in from the air inlet through the filter to the outlet is defined as a humidifying airflow path, the air conditioning device also has a non-humidifying airflow path that blows air drawn in from the air inlet to the outlet without passing through the filter, and a damper for adjusting the ratio of air passing through the humidifying airflow path to air passing through the non-humidifying airflow path. When the detected electrostatic capacitance is lower than the threshold, the control unit controls the damper by using the humidifying air path instead of the non-humidifying air path.

25. The air conditioning device according to claim 21 or 22, wherein, The air conditioning device includes a filter configured such that its lower end is immersed in water in the water storage container. When the airflow path that blows air drawn in from the air inlet through the filter to the outlet is defined as a humidifying airflow path, the air conditioning device also has a non-humidifying airflow path that blows air drawn in from the air inlet to the outlet without passing through the filter, and a damper for adjusting the ratio of air passing through the humidifying airflow path to air passing through the non-humidifying airflow path. When the change in the obtained electrostatic capacitance is smaller than a threshold, the control unit controls the damper by using the humidifying air path instead of the non-humidifying air path.

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