Air conditioning device

Abstract

Provided is an air conditioning device (1) comprising: a water storage container (19) that is provided in a cavity (10) covered by an isolation wall (39) in a body case (2), and that stores water; an electrostatic sensor (40) that is provided to the isolation wall (39) and that detects an electrostatic capacitance; and a control unit (5) that stores the electrostatic capacitance detected by the electrostatic sensor (40). The electrostatic sensor (40) is provided to the isolation wall (39) so as to face the water in the water storage container (19) with a side surface of the water storage container (19) therebetween. The water storage container (19) is provided with a distance changing section (42) configured so that the distance from the electrostatic sensor (40) to the water in the water storage container (19) at a first water level (41a) changes, and the distance from the electrostatic sensor (40) to the water in the water storage container (19) at a second water level (41b) higher than the first water level (41a) changes. The control unit (5) determines that a water level in the water storage container (19) is the first water level (41a) on the basis of a change in the electrostatic capacitance detected by the electrostatic sensor (40).

Description

air conditioning equipment

[0001] The present disclosure relates to an air conditioner that humidifies an air conditioner by blowing air onto a filter immersed in water from a water storage container, thereby evaporating the retained moisture.

[0002] Conventional air conditioning devices include a water storage container for storing water, a filter for retaining the 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 a detection signal from the detection part (see, for example, Patent Document 1).

[0003] JP 2020-120790 A JP 2015-183981 A

[0004] This type of conventional water level detection technology for air conditioners is comprised of a buoyant float, a detection unit that detects the position of the float, and a control unit that controls the water supply unit based on the detection signal from the detection unit. However, since the float must be rotatable within the water storage container, there are many irregularities within the water storage container, which poses a problem of poor maintainability.

[0005] The present disclosure provides an air conditioner that reduces unevenness inside a water storage container and improves maintainability.

[0006] an air conditioning apparatus according to the present disclosure, comprising: a main body case having an air intake port and an air outlet port; a water storage container disposed in a hollow portion surrounded in part by a partition wall within the main body case for storing water; a filter disposed so that its lower end is immersed in the water in the water storage container; a blower which blows air drawn in through the air intake port through the filter to the air outlet port; an electrostatic sensor disposed on the partition wall for detecting electrostatic capacitance; and a control unit which stores the electrostatic capacitance detected by the electrostatic sensor, wherein the electrostatic sensor is disposed on the partition wall so as to face the water in the water storage container via a side surface of the water storage container; the water storage container has a distance change unit which changes the distance between the electrostatic sensor and the water in the water storage container at a first water level and the distance between the electrostatic sensor and the water in the water storage container at a second water level higher than the first water level; and the control unit determines the water level in the water storage container to be the first water level based on the change in electrostatic capacitance detected by the electrostatic sensor.

[0007] According to the present disclosure, it is possible to detect the water level in a water storage container with few irregularities, which has the effect of improving maintainability.

[0008] FIG. 1 is a perspective view of an air conditioning apparatus according to a first embodiment of the present disclosure. FIG. 2 is a perspective view of the air conditioning apparatus with the panel open. FIG. 3 is a diagram showing the cross-sectional configuration of the air conditioning apparatus as viewed from the right side while facing the front of the air conditioning apparatus. FIG. 4 is a partially exploded perspective view of the air conditioning apparatus. FIG. 5 is a partially exploded perspective view of the air conditioning apparatus. FIG. 6 is an exploded perspective view of a tank member of the air conditioning apparatus. FIG. 7 is a diagram showing the cross-sectional configuration of the tank member of the air conditioning apparatus. FIG. 8 is a diagram showing the cross-sectional configuration of a water storage container of the air conditioning apparatus. FIG. 9 is a diagram showing the cross-sectional configuration of a water storage container of the air conditioning apparatus. FIG. 10 is a perspective view of the water storage container of the air conditioning apparatus. FIG. 11 is a partially exploded perspective view of the air conditioning apparatus. FIG. 12 is a perspective view of the water storage container of the air conditioning apparatus. FIG. 13 is a diagram showing the cross-sectional configuration of the water storage container of the air conditioning apparatus. FIG. 14 is a block diagram showing the configuration of the air conditioning apparatus. FIG. 15 is a perspective view of an air conditioning apparatus according to a second embodiment of the present disclosure. FIG. 16 is a perspective view of the air conditioning apparatus with the panel open. FIG. 17 is a diagram showing the cross-sectional configuration of the air conditioner as viewed from the right side as facing the front. FIG. 18 is a partially exploded perspective view of the air conditioner. FIG. 19 is a partially exploded perspective view of the air conditioner. FIG. 20 is an exploded perspective view of a tank member of the air conditioner. FIG. 21 is a diagram showing the cross-sectional configuration of the tank member of the air conditioner. FIG. 22 is a diagram showing the cross-sectional configuration of a water storage container of the air conditioner. FIG. 23 is a diagram showing the cross-sectional configurations of a water storage container and tank member of the air conditioner. FIG. 24 is a perspective view of a water storage container of the air conditioner. FIG. 25 is a partially exploded perspective view of the air conditioner. FIG. 26 is a diagram showing the cross-sectional configurations of a water storage container and an electrostatic sensor of the air conditioner. FIG. 27 is a block diagram showing the configuration of the air conditioner. FIG. 28 is a diagram showing the cross-sectional configuration of a water storage container of the air conditioner. FIG. 29 is a diagram showing the cross-sectional configuration of a water storage container of the air conditioner. FIG. 30 is a diagram showing the cross-sectional configuration of a water storage container of the air conditioner. FIG. 31 is a perspective view of an air conditioner according to a third embodiment of the present disclosure. Fig. 32 is a perspective view of the air conditioner with the panel open, Fig. 33 is a view showing the cross-sectional configuration of the air conditioner as viewed from the right side facing the front, and Fig. 34 is a partially exploded perspective view of the air conditioner.FIG. 35 is a partially exploded perspective view of the air conditioner. FIG. 36 is an exploded perspective view of a tank member of the air conditioner. FIG. 37 is a diagram showing the cross-sectional configuration of the tank member of the air conditioner. FIG. 38 is a diagram showing the cross-sectional configuration of a water storage container of the air conditioner. FIG. 39 is a diagram showing the cross-sectional configurations of the water storage container and tank member of the air conditioner. FIG. 40 is a perspective view of the water storage container of the air conditioner. FIG. 41 is a partially exploded perspective view of the air conditioner. FIG. 42 is a diagram showing the cross-sectional configurations of the water storage container and electrostatic sensor of the air conditioner. FIG. 43 is a block diagram showing the configuration of the air conditioner. FIG. 44 is a diagram showing the cross-sectional configuration of the water storage container of the air conditioner. FIG. 45 is a diagram showing the cross-sectional configuration of the water storage container of the air conditioner. FIG. 46 is a diagram showing the cross-sectional configuration of the water storage container of the air conditioner. FIG. 47 is a diagram showing the relationship between capacitance and water level. FIG. 48 is a diagram showing a table stored in a storage unit according to embodiment 4 of the present disclosure. FIG. 49 is a flowchart showing the procedure for controlling air volume by the air conditioner according to embodiment 4 of the present disclosure. Fig. 50 is a diagram showing a table stored in a storage unit according to Embodiment 5 of the present disclosure Fig. 51 is a flowchart showing the procedure for controlling air volume by an air conditioning apparatus according to Embodiment 5 of the present disclosure.

[0009] First Embodiment A first embodiment of the present disclosure will be described with reference to the drawings.

[0010] Figures 1 and 2 are perspective views of an air conditioning apparatus 1 according to a first embodiment of the present disclosure. Figure 1 is a view of the air conditioning apparatus as seen from diagonally above the front side. Figure 2 is a view of the air conditioning apparatus 1 with the panel 9 open as seen from diagonally above the front side. Figure 3 is a view of the cross-sectional configuration of the air conditioning apparatus 1 as seen from the right side facing the front.

[0011] In the following, the vertical direction when the air conditioning apparatus 1 is installed as shown in Figure 1 (hereinafter also referred to as the "installed state") may be referred to as the "up-down direction," and the horizontal direction may be referred to as the "left-right direction." In addition, in the following, when the air conditioning apparatus 1 is installed, the side on which the panel 9 is provided will be referred to as the "right side," and the side facing the right side of the air conditioning apparatus 1 will be referred to as the "left side." The left side when viewed from the right side of the air conditioning apparatus 1 is the "front," and the right side when viewed from the right side of the air conditioning apparatus 1 is the "rear."

[0012] The following describes the detailed configuration of the air conditioning apparatus 1. As shown in Figures 1 to 3, the air conditioning apparatus 1 of the first embodiment includes a substantially box-shaped main body case 2, a blower 3, an air conditioning unit 4, a control unit 5, and an operation unit 6.

[0013] The main body case 2 has a generally vertically long box shape, and is provided with an air intake 7, an air outlet 8, and a panel 9.

[0014] The air intakes 7 are provided on the left and right side surfaces of the main body case 2, respectively.

[0015] The air outlet 8 is provided on the rear side of the top surface of the main body case 2. An operation unit 6 is provided on the front side of the top surface of the main body case 2.

[0016] An openable panel 9 is provided on one side surface of the main body case 2. When the panel 9 is opened, the air conditioning unit 4 is located inside the main body case 2.

[0017] 3, an air passage 11 (indicated by an arrow) that connects the air intake 7 and the air outlet 8 is provided inside the main body case 2. In the air passage 11, in order from the air intake 7, the air conditioning unit 4 (including a water storage container 19 and a filter portion, which will be described later), the blower 3, and the air outlet 8 are provided.

[0018] The blower 3 is provided in the upper part of the main body case 2 and includes a motor section 12, a fan section 13 rotated by the motor section 12, and a scroll-shaped casing section 14 surrounding these.

[0019] The motor unit 12 is a single-shaft motor. A rotation shaft 15 of the motor unit 12 extends from the front side to the rear side of the main body case 2.

[0020] The fan unit 13 is a sirocco fan, and is fixed to the tip of a rotary shaft 15 that extends horizontally from the motor unit 12 .

[0021] An outlet 16 and an inlet (not shown) are provided in the casing 14. The outlet 16 is provided on the top surface of the main body case 2 of the casing 14. The inlet is provided on the back surface of the main body case 2 of the casing 14. When the fan 13 is rotated by the motor 12, air outside the casing 14 flows into the casing 14 through the inlet, and is then blown out of the casing 14 through the outlet 16.

[0022] Fig. 4 is a perspective view of the air conditioning apparatus 1 according to the first embodiment of the present disclosure. Fig. 4 is a view of the air conditioning apparatus 1 viewed from diagonally above the front side with the panel 9 open and the tank member 20 removed. Fig. 5 is a perspective view of the air conditioning apparatus 1 according to the first embodiment of the present disclosure. Fig. 5 is a view of the air conditioning apparatus 1 viewed from diagonally above the front side with the panel 9 open and the water storage container 19 removed.

[0023] As shown in Figures 4 and 5, the air conditioning unit 4 is provided in a cavity 10. The cavity 10 is a hole recessed from one side surface (right side surface) of the main body case 2 to the other side surface (left side surface) of the main body case 2. The air conditioning unit 4 can be removed from the cavity 10 to the outside of the main body case 2. The air conditioning unit 4 includes a water storage container 19, a tank member 20, and an air-liquid contact portion 21.

[0024] The water storage container 19 is made of resin. The water storage container 19 has a bowl shape with an open top and is structured to store water. One example of the material is ABS resin. The water storage container 19 is disposed at the bottom of the main body case 2, and is arranged so that it can be attached and detached by opening the panel 9 and sliding horizontally from the cavity 10. The water storage container 19 stores water supplied from the tank member 20.

[0025] Fig. 6 is an exploded perspective view of the tank member 20 according to the first embodiment of the present disclosure. Fig. 7 is a diagram showing a cross-sectional configuration of the tank member 20 according to the first embodiment of the present disclosure. Fig. 8 is a diagram showing a cross-sectional configuration of the water storage container 19 according to the first embodiment of the present disclosure. Fig. 9 is a diagram showing a cross-sectional configuration of the tank member 20 attached to the water storage container 19 according to the first embodiment of the present disclosure.

[0026] 6 to 9, the tank member 20 is installed at the bottom inside the main body case 2 and has a structure that allows it to be attached and detached from the water storage container 19. The bottom surface of the water storage container 19 is provided with a tank holding portion 23 that protrudes upward.

[0027] The tank member 20 is attached to a tank holder 23 provided on the bottom surface of the water storage container 19. The tank member 20 has a tank 24 for storing water, an opening 24a provided on the bottom surface of the tank 24 that connects the inside of the tank 24 to the outside of the tank 24, and a lid 25 that covers the opening 24a.

[0028] The center of the lid 25 is provided with a hole 25b that communicates in the vertical direction, a valve 26 that opens and closes the hole 25b, and a cylindrical tube portion 25a that surrounds the hole 25b, has a central axis that extends in the vertical direction, and protrudes downward from the lid 25. A plurality of notches 25c are provided at the lower end of the tube portion 25a of the lid 25. The hole 25b is located in the center when viewed in the direction of the central axis of the tube portion 25a.

[0029] In the above configuration, when the tank member 20 is attached to the tank holding portion 23 of the water storage container 19 with the opening 24a of the tank 24 facing downward, the valve portion 26 is opened by the tank holding portion 23. In other words, when the tank member 20 is filled with water and attached to the tank holding portion 23, the valve portion 26 is moved upward by the tank holding portion 23, and the hole 25b of the lid 25 is opened. When the hole 25b of the lid 25 is opened, water in the tank 24 is supplied to the water storage container 19 through the hole 25b of the lid 25, and water accumulates in the water storage container 19.

[0030] When the water level in the water storage container 19 rises and reaches the upper ends of the notches 25c provided in the lower end of the cylindrical portion 25a of the lid 25, the holes 25b in the tank member 20 are sealed with water, and the water supply stops. Since water remains inside the tank member 20, water from the tank 24 is supplied to the water storage container 19 whenever the water level in the water storage container 19 drops. In other words, the water level in the water storage container 19 is kept constant.

[0031] FIG. 10 is a perspective view of the water storage container 19 according to the first embodiment of the present disclosure with the gas-liquid contact portion 21 attached thereto.

[0032] 8 and 10 , the gas-liquid contact portion 21 is a member that brings the water stored in the water storage container 19 into contact with the indoor air drawn into the main body case 2 by the blower 3. The gas-liquid contact portion 21 has a filter 27, a filter frame 28, and a drive unit 29.

[0033] The filter 27 is cylindrical and has holes formed around its circumference to allow air to pass through. The filter 27 is attached to a filter frame 28 so that one end of the filter 27 is immersed in the water in the water storage container 19.

[0034] The filter frame 28 is rotatably supported by a bearing portion 30 provided in the water storage container 19. The filter 27 and the filter frame 28 are structured to be rotated by a drive portion 29.

[0035] Indoor air drawn into the main body case 2 through the air intake 7 by the blower 3 is blown to the filter 27, the lower end of which is immersed in the water stored in the water storage container 19. The air blown to the filter 27 comes into contact with the water held in the filter 27, becoming humid air, and is then blown from the air outlet 8 into the room outside the main body case 2.

[0036] The control unit 5 controls the drive unit 29 of the gas-liquid contact unit 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 unit 21 and the rotation speed of the fan unit 13 of the blower 3, etc., in response to the operation of the operation unit 6.

[0037] When the motor unit 12 of the blower 3 rotates the fan unit 13, air is sent through the air passage 11. When the fan unit 13 rotates, in the air passage 11, the outside air that has entered the main body case 2 through the air intake 7 passes through the filter 27, the blower 3, and the air outlet 8, and is then blown out of the main body case 2. The air conditioning device 1 humidifies the air by sending air to the filter 27, which is immersed in water in the water storage container 19, thereby vaporizing the moisture held by the filter 27.

[0038] Fig. 11 is a perspective view of the air conditioning apparatus 1 according to the first embodiment of the present disclosure. Fig. 11 is a view of the air conditioning apparatus 1 viewed obliquely from above on the side with the panel 9 open and the tank member 20 removed. Fig. 12 is a perspective view of the water storage container 19 according to the first embodiment of the present disclosure, with the gas-liquid contact portion 21 removed. Fig. 13 is a diagram showing the cross-sectional configuration of the water storage container 19 according to the first embodiment of the present disclosure. Fig. 14 is a block diagram showing the configuration of the air conditioning apparatus 1 according to the first embodiment of the present disclosure.

[0039] As shown in Figures 3, 11, 12, 13, and 14, the main case 2 has a cavity 10 therein. The cavity 10 is a hole recessed inward from one side (right side) of the main case 2, and is partially surrounded by a partition wall 39. The partition wall 39 is made of resin, such as ABS resin. The partition wall 39 is configured to surround at least a portion of the rear, left, and front sides of the main case 2 in the water storage container 19. The water storage container 19 is detachably mounted within the partition wall 39. The partition wall 39 is provided with an electrostatic sensor 40 that detects capacitance. The main case 2 contains a control unit 5 that stores the capacitance detected by the electrostatic sensor 40 and determines the water level in the electrolytic cell to be the first water level based on a change in the capacitance detected by the electrostatic sensor 40. The control unit 5 also controls the operation of the blower 3 and the drive unit 29 of the gas-liquid contact portion 21 .

[0040] Specifically, the electrostatic sensor 40 is provided on the side of the partition wall 39 that is perpendicular to the water surface, facing the water in the water storage container 19 via the side of the water storage container 19. The electrostatic sensor 40 is provided on the rear side of the main body case 2 on the partition wall 39. The electrostatic sensor 40 mainly detects the electrostatic capacitance of the water in the water storage container 19. The electrostatic sensor 40 detects static electricity generated by an object being charged and converts it into an electrical signal, allowing it to detect the presence and position of an object without touching it. The electrostatic sensor 40 has a pair of electrodes, and electrostatic capacitance exists between the electrodes. The electrostatic capacitance changes depending on the distance between the electrostatic sensor 40 and the water. The electrostatic capacitance detected by the electrostatic sensor 40 decreases as the distance between the electrostatic sensor 40 and the water increases.

[0041] 13, the water storage container 19 has a distance change unit 42 that changes the distance between the electrostatic sensor 40 and the water in the water storage container 19 at a first water level 41a to the distance between the electrostatic sensor 40 and the water in the water storage container 19 at a second water level 41b that is higher than the first water level 41a. The control unit 5 stores the capacitance detected by the electrostatic sensor 40 and detects the first water level 41a based on the change in the capacitance detected by the electrostatic sensor 40.

[0042] Specifically, the distance between the electrostatic sensor 40 and the water in the water storage container 19 at the first water level 41a is longer 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. When 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 being higher than the second predetermined value to being lower than the first predetermined value. When the detection value of the electrostatic sensor 40 changes from being higher than the second predetermined value to being lower than the first predetermined value, the control unit 5 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 drought level. When the water in the tank 24 runs out, 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 at the first water level 41 a, it stops the operation of the blower 3 and the drive unit 29 of the gas-liquid contact portion 21 .

[0043] Furthermore, the distance changer 42 has a recessed portion 43 recessed inward into the water storage container 19 on the opposing side surface 19a, which is the side surface of the water storage container 19 closest to the electrostatic sensor 40 that the electrostatic sensor 40 faces. The dimension of the recessed portion 43 in the lateral direction (left-right direction) along the opposing side surface 19a of the water storage container 19 is greater than the dimension of the electrostatic sensor 40 in the lateral direction (left-right direction) along the opposing side surface 19a of the water storage container 19. In the lateral direction (left-right direction) along the opposing side surface 19a of the water storage container 19, the electrostatic sensor 40 is located within the recessed portion 43. In other words, the electrostatic sensor 40 is not located outside the recessed portion 43 in the lateral direction (left-right direction) along the opposing side surface 19a of the water storage container 19. The dimension of the recessed portion 43 recessed inward into the water storage container 19 increases from the top surface of the recessed portion 43 downward.

[0044] The first water level 41a is slightly lower than the upper surface of the recessed portion 43. By providing the recessed portion 43, the distance changer 42 is configured to rapidly increase the distance between the electrostatic sensor 40 and the water in the water storage container 19 when the water level in the water storage container 19 changes to the first water level 41a. This makes it possible to make the output of the electrostatic sensor 40 steeper and increase the change in capacitance. As a result, the first predetermined value can be set significantly different from the second predetermined value, thereby improving the accuracy of water level detection.

[0045] The distance change unit 42 also 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. As a result, 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 first water level 41a, which is the drought level, and the water in the water storage container 19 increases rapidly. Furthermore, water is less likely to accumulate near the electrostatic sensor 40, i.e., on the upper surface of the recessed portion 43. This reduces false detection and improves water level detection accuracy.

[0046] The recessed portion 43 is provided between the electrostatic sensor 40 and the filter 27 at the first water level 41a. The cylindrical filter 27 is provided in the water storage container 19 so as to be rotatable up and down around a central axis extending laterally. The rotation axis of the cylindrical filter 27 is provided parallel to the opposing side surface 19a of the water storage container 19, which has the recessed portion 43. The distance from the opposing side surface 19a of the water storage container 19 to the periphery of the flat portion 44 on the filter 27 side is longer than the distance from the periphery of the flat portion 44 on the filter 27 side to the circumferential surface of the filter 27.

[0047] This increases the distance from the opposing side surface 19a of the water storage container 19 to the periphery of the flat portion 44 on the filter 27 side, and the water can be moved farther from the electrostatic sensor 40 at the first water level 41a than at the second water level 41b. This makes it easier to detect changes in the output value, reduces false detections, and improves the accuracy of water level detection.

[0048] The flat portion 44 is inclined downward from the opposing side surface 19 a of the water storage container 19 toward the filter 27 side.

[0049] As a result, 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 inclination of the surface of the flat portion 44 causes the water to flow to the side farther from the electrostatic sensor 40. This makes it even more difficult for water to accumulate on the upper surface of the recessed portion 43, causing the detection value of the electrostatic sensor 40 to decrease rapidly, thereby improving the accuracy of water level detection.

[0050] The electrostatic sensor 40 may also be provided on the partition wall 39 that is perpendicular to the water surface so as to face the side surface of the water storage container 19 and the water in the water storage container 19 via the partition wall 39. The electrostatic sensor 40 may also be provided on the outer surface of the side surface of the partition wall 39.

[0051] As a result, the water storage container 19 is surrounded by the isolation wall 39 made of resin. In other words, since the isolation wall 39 is provided between the water in the water storage container 19 and the electrostatic sensor 40, the water in the water storage container 19 does not come into contact with the charged part of the electrostatic sensor 40, and the product can be used safely.

[0052] The present disclosure is expected to be used as an air conditioning device for home or office use.

[0053] (Embodiment 2) A conventional air conditioner includes a main body case, a water storage container, a water supply means that automatically supplies water to maintain a constant water level in the water storage container, and a means for detecting the presence or absence of liquid in the water storage container. Providing two detection means for the water storage container and the water storage container would increase the size of the device, so two detection means are realized with one detection means (see, for example, Patent Document 1).

[0054] In such conventional air conditioners, a float with a built-in magnet that floats depending on the water level in the water storage container is installed inside the water storage container and a detector element that can detect the magnetic field of the magnet is installed on the main body case as a configuration for detecting the water storage container and the presence or absence of liquid in the water storage container. However, because the float is installed so that it can rotate freely inside the water storage container, an uneven shape occurs in the water storage container, which has the problem of making the water storage container difficult to maintain.

[0055] The present disclosure provides a water storage container and a means for detecting the presence or absence of liquid in the water storage container without using a float with a built-in magnet, in order to minimize unevenness and make the water storage container easy to maintain.

[0056] a water storage container for storing water and removably mounted in a cavity part surrounded by a partition wall within the main body case; a filter arranged so that its lower end is immersed in the water in the water storage container; a blower for blowing air drawn in through the air storage container through the filter to the outlet; an electrostatic sensor mounted on the partition wall for detecting capacitance; and a control unit for storing the capacitance detected by the electrostatic sensor, wherein the cavity part extends horizontally inward from one side surface of the main body case, and the electrostatic sensor is mounted on the partition wall so as to face the water in the water storage container via the side surface of the water storage container, and the capacitance detected by the electrostatic sensor when the water storage container is mounted in the cavity part is greater than the capacitance detected by the electrostatic sensor when the water storage container is not mounted in the cavity, and the capacitance detected by the electrostatic sensor when the water storage container containing water at a predetermined level is mounted in the cavity part is greater than the capacitance detected by the electrostatic sensor when the water storage container is mounted in the cavity part. The capacitance is larger than the capacitance detected by the electrostatic sensor when the water storage container is attached to the hollow portion without storing water, and the control unit detects the attachment of the water storage container to the hollow portion and the presence of water at the specified water level based on the change in capacitance detected by the electrostatic sensor.

[0057] According to the present disclosure, it is possible to reduce the uneven shape of the water storage container, thereby achieving the effect of making the maintenance of the water storage container easier.

[0058] A second embodiment of the present disclosure will be described with reference to the drawings.

[0059] Figures 15 and 16 are perspective views of an air conditioning apparatus 1001 according to a second embodiment of the present disclosure. Fig. 15 is a view of the air conditioning apparatus 1001 seen from diagonally above the front side. Fig. 16 is Fig. 17, showing the air conditioning apparatus 1001 with the panel 1009 open, seen from diagonally above the front side. Fig. 17 is a view showing the cross-sectional configuration of the air conditioning apparatus 1001 seen from the right side as you face the front.

[0060] In the following, the vertical direction when the air conditioning apparatus 1001 is installed (hereinafter also referred to as the "installed state") as shown in Figure 15 may be referred to as the "up-down direction," and the horizontal direction may be referred to as the "left-right direction." In addition, in the following, in the installed state, the surface of the air conditioning apparatus 1001 on which the panel 1009 is provided will be referred to as the "right side," and the surface opposite the right side of the air conditioning apparatus 1001 will be referred to as the "left side." The left side when viewed from the right side of the air conditioning apparatus 1001 is the "front," and the right side when viewed from the right side of the air conditioning apparatus 1001 is the "rear."

[0061] The following describes the detailed configuration of the air conditioning apparatus 1001. As shown in Figures 15 to 17, the air conditioning apparatus 1001 of embodiment 2 includes a substantially box-shaped main body case 1002, a blower 1003, an air conditioning unit 1004, a control unit 1005, and an operation unit 1006.

[0062] The main body case 1002 has a generally vertically long box shape, and is provided with an air intake 1007 , an air outlet 1008 , and a panel 1009 .

[0063] The air intakes 1007 are provided on the left and right side surfaces of the main body case 1002 .

[0064] The air outlet 1008 is provided on the rear side of the top surface of the main body case 1002. An operation unit 1006 is provided on the front side of the top surface of the main body case 1002.

[0065] An openable panel 1009 is provided on one side surface of the main body case 1002. When the panel 1009 is opened, an air conditioning unit 1004 is provided inside the main body case 1002.

[0066] 17 , an air passage 1011 (indicated by an arrow) that connects air intake 1007 and air outlet 1008 is provided inside main body case 1002. Air passage 1011 is provided with, in order from air intake 1007, air conditioning unit 1004 (including a water storage container 1019 and a filter portion, which will be described later), blower 1003, and air outlet 1008.

[0067] The blower 1003 is provided in the upper part of the main body case 1002, and includes a motor section 1012, a fan section 1013 rotated by the motor section 1012, and a scroll-shaped casing section 1014 that surrounds them.

[0068] The motor unit 1012 is a single-shaft motor. A rotation shaft 1015 of the motor unit 1012 extends from the front side to the rear side of the main body case 1002.

[0069] The fan unit 1013 is a sirocco fan, and is fixed to the tip of a rotating shaft 1015 that extends horizontally from the motor unit 1012 .

[0070] An outlet 1016 and an inlet (not shown) are provided in the casing 1014. The outlet 1016 is provided on the top surface of the main body case 1002 of the casing 1014. The inlet is provided on the back surface of the main body case 1002 of the casing 1014. When the fan 1013 is rotated by the motor 1012, air outside the casing 1014 flows into the casing 1014 through the inlet, and is then blown out of the casing 1014 through the outlet 1016.

[0071] Figure 18 is a perspective view of an air conditioning apparatus 1001 according to a second embodiment of the present disclosure. Figure 18 is a view of the air conditioning apparatus 1001 viewed from diagonally above the front side with the panel 1009 open and the tank member 1020 removed. Figure 19 is a perspective view of the air conditioning apparatus 1001 according to the second embodiment of the present disclosure. Figure 19 is a view of the air conditioning apparatus 1001 viewed from diagonally above the front side with the panel 1009 open and the water storage container 1019 removed.

[0072] 18 and 19, the air conditioning unit 1004 is provided in a hollow portion 1010. The hollow portion 1010 is a hole recessed from one side surface (right side surface) of the main body case 1002 to the other side surface (left side surface) of the main body case 1002. The air conditioning unit 1004 can be removed from the hollow portion 1010 to the outside of the main body case 1002. The air conditioning unit 1004 includes a water storage container 1019, a tank member 1020, and an air-liquid contact portion 1021.

[0073] The water storage container 1019 is made of resin. The water storage container 1019 has a bowl shape with an opening on the top, and is structured to store water. One example of the material is ABS resin. The water storage container 1019 is disposed at the bottom of the main body case 1002, and is arranged so that it can be attached and detached by opening the panel 1009 and sliding horizontally from the cavity 1010. The water storage container 1019 stores water supplied from the tank member 1020.

[0074] Fig. 20 is an exploded perspective view of tank member 1020 according to embodiment 2 of the present disclosure. Fig. 21 is a diagram showing a cross-sectional configuration of tank member 1020 according to embodiment 2 of the present disclosure. Fig. 22 is a diagram showing a cross-sectional configuration of water storage container 1019 according to embodiment 2 of the present disclosure. Fig. 23 is a diagram showing a cross-sectional configuration of water storage container 1019 according to embodiment 2 of the present disclosure with tank member 1020 and gas-liquid contact portion 1021 attached thereto.

[0075] 20 to 23, the tank member 1020 is installed at the bottom inside the main body case 1002, and has a structure that allows it to be attached to and detached from the water storage container 1019. The bottom surface of the water storage container 1019 is provided with a tank holding portion 1023 that protrudes upward.

[0076] Tank member 1020 is attached to tank holder 1023 provided on the bottom surface of water storage container 1019. Tank member 1020 has tank 1024 for storing water, opening 1024a provided on the bottom surface of tank 1024 for communicating between the inside of tank 1024 and the outside of tank 1024, and lid 1025 for covering opening 1024a.

[0077] The center of the lid 1025 is provided with a hole 1025b that communicates in the vertical direction, a valve 1026 that opens and closes the hole 1025b, and a cylindrical tube portion 1025a that surrounds the hole 1025b, has a central axis that extends in the vertical direction, and protrudes downward from the lid 1025. In addition, a plurality of notches 1025c are provided at the lower end of the tube portion 1025a of the lid 1025. The hole 1025b is located in the center when viewed in the direction of the central axis of the tube portion 1025a.

[0078] In the above configuration, when the tank member 1020 is attached to the tank holding portion 1023 of the water storage container 1019 with the opening 1024a of the tank 1024 facing downward, the valve portion 1026 is opened by the tank holding portion 1023. In other words, when the tank member 1020 is filled with water and attached to the tank holding portion 1023, the valve portion 1026 is moved upward by the tank holding portion 1023, and the hole 1025b of the lid 1025 is opened. When the hole 1025b of the lid 1025 is opened, water in the tank 1024 is supplied to the water storage container 1019 through the hole 1025b of the lid 1025, and water accumulates in the water storage container 1019.

[0079] When the water level in the water storage container 1019 rises and reaches the upper ends of the notches 1025c provided in the lower end of the cylindrical portion 1025a of the lid 1025, the holes 1025b in the tank member 1020 are sealed with water, and the water supply stops. Here, because water remains inside the tank member 1020, whenever the water level in the water storage container 1019 drops, water from the tank 1024 is supplied to the water storage container 1019. In other words, the water level in the water storage container 1019 is kept constant.

[0080] FIG. 24 is a perspective view of a water storage container 1019 according to the second embodiment of the present disclosure to which a gas-liquid contact portion 1021 is attached.

[0081] 22 and 24 , the gas-liquid contact part 1021 is a member that brings the water stored in the water storage container 1019 into contact with the indoor air drawn into the main body case 1002 by the blower 1003. The gas-liquid contact part 1021 has a filter 1027, a filter frame 1028, and a drive unit 1029.

[0082] The filter 1027 is cylindrical and has holes formed around its circumference to allow air to pass through. The filter 1027 is attached to a filter frame 1028 so that one end of the filter 1027 is immersed in the water in the water storage container 1019.

[0083] The filter frame 1028 is rotatably supported by a bearing portion 1030 provided in the water storage container 1019. The filter 1027 and the filter frame 1028 are configured to be rotated by a drive portion 1029.

[0084] Indoor air drawn into main body case 1002 from air intake 1007 by blower 1003 is blown to filter 1027, the lower end of which is immersed in water stored in water storage container 1019. The air blown to filter 1027 comes into contact with the water held in filter 1027, becoming humid air, and is then blown from air outlet 1008 into the room outside main body case 1002.

[0085] The control unit 1005 controls the drive unit 1029 of the gas-liquid contact portion 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 portion 1021 and the rotation speed of the fan unit 1013 of the blower 1003 in response to the operation of the operation unit 1006.

[0086] When fan section 1013 is rotated by motor section 1012 of blower 1003, air is sent through air passage 1011. When fan section 1013 rotates, in air passage 1011, outside air that has entered main body case 1002 from air intake 1007 passes through filter 1027, blower 1003, and air outlet 1008 in this order, and is then blown out of main body case 1002. The air conditioning device 1001 humidifies the air by sending air to filter 1027, which is immersed in water in water storage container 1019, thereby vaporizing the moisture held by filter 1027.

[0087] Figure 25 is a perspective view of an air conditioning apparatus 1001 according to a second embodiment of the present disclosure. Figure 25 is a view of the air conditioning apparatus 1001 viewed from diagonally above the side with the panel 1009 open and the tank member 1020 removed. Figure 26 is a view showing the cross-sectional configuration of the water storage container 1019 and the electrostatic sensor 1040 as viewed from the right side of the main body case 1002 according to the second embodiment of the present disclosure. Figure 27 is a block diagram showing the configuration of the air conditioning apparatus 1001 according to the second embodiment of the present disclosure.

[0088] As shown in Figures 17, 25, 26, and 27, a cavity 1010, which is a hole extending horizontally from one side (right side) of the main body case 1002 toward the inside of the main body case 1002, is partially surrounded by a partition wall 1039 inside the main body case 1002. A water storage container 1019 for storing water is detachably mounted horizontally within the cavity 1010, which is partially surrounded by the partition wall 1039. A capacitance-type electrostatic sensor 1040 that detects capacitance is mounted on the partition wall 1039. The main body case 1002 includes a control unit 1005 that stores the capacitance detected by the electrostatic sensor 1040 and can attach the water storage container 1019 to the cavity 1010 and detect a predetermined water level in the water storage container 1019 based on changes in the capacitance detected by the electrostatic sensor 1040.

[0089] The partition wall 1039 is made up of surfaces provided on the front, rear, and left sides of the water storage container 1019 when viewed from the front of the air conditioning device 1001. The material of the partition wall 1039 is resin, and one example of the material is ABS resin. The partition wall 1039 is configured to surround at least a portion of the rear side, left side, and front side of the main body case 1002 in the water storage container 1019.

[0090] FIG. 26 is a cross-sectional view of the vicinity of the electrostatic sensor 1040 as viewed from the right side as one faces the front of the air conditioner. The electrostatic sensor 1040 detects electrostatic capacitance. The electrostatic sensor 1040 detects static electricity generated by an object's electrical charge and converts it into an electrical signal for detection, enabling it to detect the presence and position of an object without touching it. The electrostatic sensor 1040 has a pair of electrodes, and electrostatic capacitance exists between the electrodes. The electrostatic capacitance varies depending on the distance between the electrostatic sensor 1040 and the water. The electrostatic capacitance detected by the electrostatic sensor 1040 decreases as the distance between the electrostatic sensor 1040 and the water increases. The electrostatic sensor 1040 is installed on the side of the partition wall 1039, which is perpendicular to the water surface, so as to face the water in the water storage container 1019 via the side of the water storage container 1019. Here, the arrangement of the water storage container 1019 and the isolation wall 1039 is configured so that the capacitance detected by the electrostatic sensor 1040 when the water storage container 1019 is attached to the hollow portion 1010 is greater than the capacitance detected by the electrostatic sensor 1040 when the water storage container 1019 is not attached to the hollow portion 1010, and the capacitance detected by the electrostatic sensor 1040 when the water storage container 1019 containing water at a predetermined level is attached to the hollow portion 1010 is greater than the capacitance detected by the electrostatic sensor 1040 when the water storage container 1019 not containing water is attached to the hollow portion 1010.

[0091] Specifically, when the water storage container 1019 containing no water is attached to the hollow portion 1010, the electrostatic sensor 1040 detects the capacitance of the water storage container 1019 facing the electrostatic sensor 1040. When the water storage container 1019 is not attached to the hollow portion 1010, the electrostatic sensor 1040 detects the capacitance of the isolation wall 1039 facing the electrostatic sensor 1040. Since the material of the water storage container 1019 and the partition wall 1039 is resin, there is not much difference in the capacitance between the water storage container 1019 and the partition wall 1039. However, since 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 partition wall 1039, the capacitance detected by the electrostatic sensor 1040 when the water storage container 1019 is attached to the hollow portion 1010 is greater than the capacitance detected by the electrostatic sensor 1040 when the water storage container 1019 is not attached to the hollow portion 1010.

[0092] Furthermore, when water storage container 1019 containing no water is attached to cavity 1010, electrostatic sensor 1040 detects the capacitance of water storage container 1019 facing electrostatic sensor 1040. On the other hand, when water storage container 1019 containing a predetermined level of water is attached to cavity 1010, electrostatic sensor 1040 detects the capacitance of water storage container 1019 facing electrostatic sensor 1040 and the capacitance of the water in water storage container 1019 facing electrostatic sensor 1040. Because water storage container 1019 is made of resin, the capacitance of the water in water storage container 1019 is greater than the capacitance of water storage container 1019 itself. In other words, the capacitance detected by the electrostatic sensor 1040 when the water storage container 1019 containing a predetermined level of water is attached to the hollow portion 1010 is greater than the capacitance detected by the electrostatic sensor 1040 when the water storage container 1019 containing no water is attached to the hollow portion 1010.

[0093] This allows the control unit 1005 to detect the attachment of the water storage container 1019 to the cavity 1010 and the presence of a predetermined level of water in the water storage container 1019 based on a change in capacitance detected by the electrostatic sensor 1040. When the control unit 1005 detects the attachment of the water storage container 1019 and the presence of a predetermined level of water in the water storage container 1019 using 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., in accordance with the operation of the operation unit 1006.

[0094] Furthermore, the electrostatic sensor 1040 is provided on the outer surface of the isolation wall 1039. Specifically, the electrostatic sensor 1040 is provided facing the water storage container 1019 across the isolation wall 1039 provided behind the water storage container 1019 when viewed from the front of the air conditioning apparatus 1001. The isolation wall 1039 provided at the rear also spatially separates the electrostatic sensor 1040 from the cavity 1010. This prevents the user from touching the electrostatic sensor 1040, ensuring safety and preventing breakdowns and deterioration of the electrostatic sensor 1040 and misalignment of the mounting position.

[0095] Furthermore, the minimum distance between the portion of the partition wall 1039 where the electrostatic sensor 1040 is provided and the side surface of the water storage container 1019 is smaller than the thickness of the side surface of the water storage container 1019. Specifically, to allow the water storage container 1019 to be detachable, a gap is provided between the partition wall 1039, which is provided behind the water storage container 1019 when viewed from the front of the air conditioning device 1001, and the water storage container 1019, and this gap is not uniform due to inclination, etc. The minimum distance of this gap is smaller than the thickness of the side surface of the water storage container 1019 facing the electrostatic sensor 1040. The thickness of the side surface of the water storage container 1019 is, for example, 1.0 mm to 3.0 mm. This allows the electrostatic sensor 1040 to be closer to the liquid in the water storage container 1019, allowing the electrostatic sensor 1040 to detect changes in capacitance with high sensitivity.

[0096] Furthermore, the minimum distance between the portion of the partition wall 1039 where the electrostatic sensor 1040 is provided and the side surface of the water storage container 1019 is smaller than the thickness of the portion of the partition wall 1039 where the electrostatic sensor 1040 is provided. Specifically, the thickness of the portion of the partition wall 1039 where the electrostatic sensor 1040 is provided is, for example, 0.5 mm to 3.0 mm. This allows the electrostatic sensor 1040 to be closer to the liquid in the water storage container 1019, allowing the electrostatic sensor 1040 to detect changes in capacitance with high sensitivity.

[0097] Furthermore, the thickness of the partition wall 1039 is smallest at the portion where the electrostatic sensor 1040 is provided. Specifically, the partition wall 1039 has a certain thickness to ensure the strength of the product, but the portion of the partition wall 1039 where the electrostatic sensor 1040 is provided only needs to be thick enough to hold the electrostatic sensor 1040. Therefore, the portion of the partition wall 1039 where the electrostatic sensor 1040 is provided has the smallest thickness compared to the portion of the partition wall 1039 where the electrostatic sensor 1040 is not provided. This allows the electrostatic sensor 1040 to be closer to the liquid in the water storage container 1019, allowing the electrostatic sensor 1040 to detect changes in capacitance with high sensitivity.

[0098] Figures 28 and 29 are cross-sectional views of an air conditioning apparatus 1001 according to a second embodiment of the present disclosure, viewed from above. The cross-sectional heights of Figures 28 and 29 are different. As shown in Figures 27 and 28, the air conditioning apparatus 1001 has a distance restriction unit 1041 that restricts the distance between the electrostatic sensor 1040 and the water storage container 1019. The distance restriction unit 1041 has a front restriction unit 1042 and a rear restriction unit 1043.

[0099] The front regulating portion 1042 is provided forward of the electrostatic sensor 1040 in the insertion direction of the water storage container 1019 when the water storage container 1019 is attached to the hollow portion 1010. Specifically, the front regulating portion 1042 has a front water storage regulating portion 1042a provided on the water storage container 1019 and a front isolation regulating portion 1042b provided on the isolation wall 1039.

[0100] The front water storage restriction portion 1042a has a shape in which a surface or a protrusion protrudes from the water storage container 1019, or a shape in which a surface or a protrusion can be accommodated.

[0101] The front isolation restriction part 1042b has a shape that allows it to be inserted and removed so as to correspond to the shape of the front water storage restriction part 1042a. The gap distance between the front water storage restriction part 1042a and the front isolation restriction part 1042b is smaller than the minimum distance between the part of the separation wall 1039 where the electrostatic sensor 1040 is provided and the side surface of the water storage container 1019.

[0102] As a result, the minimum distance between the portion of the separating wall 1039 where the electrostatic sensor 1040 is provided and the side surface of the water storage container 1019 on the front side restricting portion 1042 side does not vary by more than the minimum distance, and it is possible to reduce the variation in capacitance even if the minimum distance varies due to the attachment or detachment of the water storage container 1019. Therefore, the control unit 1005 can detect the attachment of the water storage container 1019 to the hollow portion 1010 and the presence of water at a predetermined level.

[0103] The rear regulating portion 1043 is provided rearward of the electrostatic sensor 1040 in the insertion direction of the water storage container 1019 when the water storage container 1019 is attached to the hollow portion 1010. Specifically, the rear regulating portion 1043 has a rear water storage regulating portion 1043a provided on the water storage container 1019 and a rear isolation regulating portion 1043b provided on the isolation wall 1039.

[0104] The rear water storage restriction portion 1043 a has a shape in which the surface parallel to the isolation wall 1039 on which the electrostatic sensor 1040 is provided protrudes from the water storage container 1019 .

[0105] The rear isolation restriction portion 1043b has a shape that fits into the shape of the rear water retention restriction portion 1043a. The gap distance between the rear water retention restriction portion 1043a and the rear isolation restriction portion 1043b is smaller than the minimum distance between the portion of the separation wall 1039 where the electrostatic sensor 1040 is provided and the side surface of the water storage container 1019.

[0106] As a result, the minimum distance between the part of the separating wall 1039 where the electrostatic sensor 1040 is provided and the side surface of the water storage container 1019 on the rear side restricting portion 1043 side does not vary by more than the minimum distance, and it is possible to reduce the variation in capacitance even if the minimum distance varies due to the attachment and detachment of the water storage container 1019. Therefore, the control unit 1005 can detect the attachment of the water storage container 1019 to the hollow portion 1010 and the presence of water at a predetermined level.

[0107] Figure 30 is a cross-sectional view of an air conditioning apparatus 1001 according to the second embodiment of the present disclosure, viewed from the front. As shown in Figure 30, hollow portion 1010 and water storage container 1019 have temporary fixing portions 1044 that temporarily fix water storage container 1019 in hollow portion 1010 when water storage container 1019 is inserted to a predetermined position in hollow portion 1010. When water storage container 1019 is temporarily fixed in hollow portion 1010, front side restricting portion 1042 and rear side restricting portion 1043 restrict the distance between electrostatic sensor 1040 and water storage container 1019.

[0108] The temporary fixing portion 1044 has a claw shape extending from the bottom surface of the hollow portion 1010 toward the inside of the hollow portion 1010. The water storage container 1019 is provided with a shape corresponding to the temporary fixing portion 1044, and when the water storage container 1019 is inserted into the hollow portion 1010, the temporary fixing portion 1044 catches on the water storage container 1019, temporarily fixing the water storage container 1019 inside the hollow portion 1010.

[0109] This allows the electrostatic sensor 1040 to accurately detect capacitance by restricting the distance between the electrostatic sensor 1040 and the water storage container 1019. This allows the control unit 1005 to detect whether the water storage container 1019 is attached and whether there is liquid in the water storage container 1019.

[0110] The present disclosure is expected to be used as an air conditioning device for home or office use.

[0111] (Embodiment 3) A conventional air conditioner includes a main body case, a water storage container, a water supply means for automatically supplying water to maintain a constant water level in the water storage container, and a means for detecting the presence or absence of liquid in the water storage container. Providing two detection means for the water storage container and the water storage container would increase the size of the device, so two detection means are realized with one detection means (see, for example, Patent Document 2).

[0112] Conventional water storage containers and systems for detecting the presence or absence of liquid therein include a float unit with a built-in magnet that floats depending on the water level in the container, and a detector element capable of detecting the magnetic field of the magnet that is mounted on the main body case. Because the float with a built-in magnet that floats depending on the water level is rotatably mounted within the container, this configuration creates an uneven shape on the container, making it difficult to maintain. Furthermore, repeated water supply to the container causes scale, which is inorganic salts such as calcium contained in tap water, to deposit on the sides and bottom of the container. Because scale can retain water, there is a problem that the accuracy of water level detection decreases depending on the detection method when the deposited scale remains at a water level where there is no water.

[0113] Therefore, the present disclosure provides a means for detecting the presence or absence of a water storage container and liquid within the water storage container with high accuracy without using a float with a built-in magnet, in order to minimize unevenness and make the water storage container easy to maintain.

[0114] An air conditioning apparatus according to one aspect of the present disclosure includes a main body case having an air intake and an air outlet, a water storage container for storing water located in a cavity within the main body case, a partition wall surrounding the cavity, a blower for introducing water from the water storage container into air drawn in through the air intake and blowing the resulting air out the air outlet, an electrostatic sensor located in the partition wall for detecting capacitance, and a control unit for storing the capacitance detected by the electrostatic sensor. The cavity extends horizontally inward from one side of the main body case, and the electrostatic sensor is located from the partition wall to face the water in the water storage container via the side of the water storage container. The control unit detects a predetermined water level in the water storage container based on the capacitance detected by the electrostatic sensor, and at least a portion of the air blown by the blower comes into contact with the side of the water storage container.

[0115] A third embodiment of the present disclosure will be described with reference to the drawings.

[0116] Figures 31 and 32 are perspective views of an air conditioning apparatus 2001 according to a third embodiment of the present disclosure. Fig. 31 is a view of the air conditioning apparatus 2001 seen from diagonally above the front side. Fig. 32 is Fig. 33, which shows the air conditioning apparatus 2001 with the panel 2009 open, seen from diagonally above the front side. Fig. 33 is a view showing the cross-sectional configuration of the air conditioning apparatus 2001 seen from the right side as you face the front.

[0117] In the following, the vertical direction when the air conditioning apparatus 2001 is installed (hereinafter also referred to as the "installed state") as shown in Figure 31 may be referred to as the "up-down direction," and the horizontal direction may be referred to as the "left-right direction." In addition, in the following, when the air conditioning apparatus 2001 is installed, the surface on which the panel 2009 is provided will be referred to as the "right side," and the surface opposite the right side of the air conditioning apparatus 2001 will be referred to as the "left side." The left side when viewed from the right side of the air conditioning apparatus 2001 is the "front," and the right side when viewed from the right side of the air conditioning apparatus 2001 is the "rear."

[0118] The following describes the detailed configuration of the air conditioning apparatus 2001. As shown in Figures 31 to 33, the air conditioning apparatus 2001 of embodiment 3 includes a substantially box-shaped main body case 2002, a blower 2003, an air conditioning unit 2004, a control unit 2005, and an operation unit 2006.

[0119] The main body case 2002 has a generally vertically long box shape, and is provided with an air intake 2007 , an air outlet 2008 , and a panel 2009 .

[0120] The air intakes 2007 are provided on the left and right side surfaces of the main body case 2002 .

[0121] The air outlet 2008 is provided on the rear side of the top surface of the main body case 2002. An operation unit 2006 is provided on the front side of the top surface of the main body case 2002.

[0122] An openable panel 2009 is provided on one side surface of the main body case 2002. When the panel 2009 is opened, an air conditioning unit 2004 is provided inside the main body case 2002.

[0123] 33 , an air passage 2011 (indicated by an arrow) that connects air intake 2007 and air outlet 2008 is provided inside main body case 2002. Air passage 2011 is provided with, in order from air intake 2007, air conditioning unit 2004 (including a water storage container 2019 and a filter portion, which will be described later), blower 2003, and air outlet 2008.

[0124] The blower 2003 is provided in the upper part of the main body case 2002, and includes a motor section 2012, a fan section 2013 rotated by the motor section 2012, and a scroll-shaped casing section 2014 surrounding them.

[0125] The motor unit 2012 is a single-shaft motor. The motor unit 2012 and a rotation shaft 2015 of the motor unit 2012 extend from the front side to the rear side of the main body case 2002.

[0126] The fan section 2013 is a sirocco fan, and is fixed to the tip of a rotation shaft 2015 that extends horizontally from the motor section 2012 .

[0127] An outlet 2016 and an inlet (not shown) are provided in the casing unit 2014. The outlet 2016 is provided on the upper surface of the main body case 2002 of the casing unit 2014. The inlet is provided on the rear surface of the main body case 2002 of the casing unit 2014. When the fan unit 2013 is rotated by the motor unit 2012, air outside the casing unit 2014 flows into the casing unit 2014 through the inlet, and is blown out of the casing unit 2014 through the outlet 2016.

[0128] Figure 34 is a perspective view of an air conditioning apparatus 2001 according to a third embodiment of the present disclosure. Figure 34 is a view of the air conditioning apparatus 2001 viewed from diagonally above the front side with the panel 2009 open and the tank member 2020 removed. Figure 35 is a perspective view of the air conditioning apparatus 2001 according to the third embodiment of the present disclosure. Figure 35 is a view of the air conditioning apparatus 2001 viewed from diagonally above the front side with the panel 2009 open and the water storage container 2019 removed.

[0129] As shown in Figures 34 and 35, air conditioning unit 2004 is provided in hollow portion 2010. Hollow portion 2010 is a hole recessed from one side surface (right side surface) of main body case 2002 to the other side surface (left side surface) of main body case 2002. Air conditioning unit 2004 can be removed from inside hollow portion 2010 to the outside of main body case 2002. Air conditioning unit 2004 includes a water storage container 2019, a tank member 2020, and an air-liquid contact portion 2021.

[0130] The water storage container 2019 is made of resin. The water storage container 2019 has a bowl shape with an opening on the top, and is structured to store water. One example of the material is ABS resin. The water storage container 2019 is disposed at the bottom of the main body case 2002, and is disposed so as to be detachable by opening the panel 2009 and sliding it horizontally from the cavity 2010. The water storage container 2019 stores water supplied from the tank member 2020.

[0131] Fig. 36 is an exploded perspective view of tank member 2020 according to embodiment 3 of the present disclosure. Fig. 37 is a diagram showing a cross-sectional configuration of tank member 2020 according to embodiment 3 of the present disclosure. Fig. 38 is a diagram showing a cross-sectional configuration of water storage container 2019 according to embodiment 3 of the present disclosure. Fig. 39 is a diagram showing a cross-sectional configuration of water storage container 2019 according to embodiment 3 of the present disclosure in a state in which tank member 2020 and gas-liquid contact portion 2021 are attached.

[0132] 36 to 39, the tank member 2020 is installed at the bottom inside the main body case 2002, and has a structure that allows it to be attached to and detached from the water storage container 2019. The bottom surface of the water storage container 2019 is provided with a tank holding portion 2023 that protrudes upward.

[0133] Tank member 2020 is attached to a tank holder 2023 provided on the bottom surface of water storage container 2019. Tank member 2020 has a tank 2024 for storing water, an opening 2024a provided on the bottom surface of tank 2024 for communicating between the inside of tank 2024 and the outside of tank 2024, and a lid 2025 for covering opening 2024a.

[0134] The center of the lid 2025 is provided with a hole 2025b that communicates in the vertical direction, a valve portion 2026 that opens and closes the hole 2025b, and a cylindrical tube portion 2025a that surrounds the hole 2025b, has a central axis that extends in the vertical direction, and protrudes downward from the lid 2025. In addition, a plurality of notches 2025c are provided at the lower end of the tube portion 2025a of the lid 2025. The hole 2025b is disposed in the center when viewed in the direction of the central axis of the tube portion 2025a.

[0135] In the above configuration, when the tank member 2020 is attached to the tank holding portion 2023 of the water storage container 2019 with the opening 2024a of the tank 2024 facing downward, the valve portion 2026 is opened by the tank holding portion 2023. In other words, when the tank member 2020 is filled with water and attached to the tank holding portion 2023, the valve portion 2026 is moved upward by the tank holding portion 2023, and the hole 2025b of the lid 2025 is opened. When the hole 2025b of the lid 2025 is opened, water in the tank 2024 is supplied to the water storage container 2019 through the hole 2025b of the lid 2025, and water accumulates in the water storage container 2019.

[0136] When the water level in the water storage container 2019 rises and reaches the upper ends of the notches 2025c provided in the plurality of notches 2025c at the lower end of the cylindrical portion 2025a of the lid 2025, the holes 2025b in the tank member 2020 are sealed with water, and water supply stops. Here, because water remains inside the tank member 2020, water from the tank 2024 is supplied to the water storage container 2019 whenever the water level in the water storage container 2019 drops. In other words, the water level in the water storage container 2019 is kept constant.

[0137] FIG. 40 is a perspective view of a water storage container 2019 according to the third embodiment of the present disclosure to which a gas-liquid contact portion 2021 is attached.

[0138] 38 and 40 , the gas-liquid contact part 2021 is a member that brings the water stored in the water storage container 2019 into contact with the indoor air drawn into the main body case 2002 by the blower 2003. The gas-liquid contact part 2021 has a filter 2027, a filter frame 2028, and a drive unit 2029.

[0139] The filter 2027 is cylindrical and has holes formed around its circumference to allow air to pass through. The filter 2027 is attached to a filter frame 2028 so that one end of the filter 2027 is immersed in the water in the water storage container 2019.

[0140] The filter frame 2028 is rotatably supported by a bearing portion 2030 provided in the water storage container 2019. The filter 2027 and the filter frame 2028 are structured to be rotated by a drive portion 2029.

[0141] Indoor air drawn into main body case 2002 through intake port 2007 by blower 2003 is blown to filter 2027, the lower end of which is immersed in water stored in water storage container 2019. The air blown to filter 2027 comes into contact with the water held in filter 2027, becoming humid air, and is then blown from air outlet 2008 into the room outside main body case 2002.

[0142] The control unit 2005 controls the drive unit 2029 of the gas-liquid contact portion 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 portion 2021 and the rotation speed of the fan unit 2013 of the blower 2003, etc., in response to operation of the operation unit 2006.

[0143] When fan section 2013 is rotated by motor section 2012 of blower 2003, air is sent through air passage 2011. When fan section 2013 rotates, in air passage 2011, outside air that has entered main body case 2002 from air intake 2007 passes through filter 2027, blower 2003, and air outlet 2008 in this order, and is then blown out of main body case 2002. Air conditioner 2001 humidifies the air by sending air to filter 2027, which is immersed in water in water storage container 2019, thereby vaporizing the moisture held by filter 2027.

[0144] Figure 41 is a perspective view of an air conditioning apparatus 2001 according to a third embodiment of the present disclosure. Figure 41 is a view of the air conditioning apparatus 2001 viewed from diagonally above the side with the panel 2009 open and the tank member 2020 removed. Figure 42 is a view showing the cross-sectional configuration of the water storage container 2019 and the electrostatic sensor 2040 as viewed from the right side of the main body case 2002 according to the third embodiment of the present disclosure. Figure 43 is a block diagram showing the configuration of the air conditioning apparatus 2001 according to the third embodiment of the present disclosure.

[0145] As shown in Figures 33, 41, 42, and 43, a cavity 2010, which is a hole extending horizontally from one side (right side) of the main body case 2002 toward the inside of the main body case 2002, is partially surrounded by a partition wall 2039 inside the main body case. A water storage container for storing water is detachably mounted horizontally inside the cavity 2010, which is partially surrounded by the partition wall 2039. A capacitance-type electrostatic sensor 2040 that detects capacitance is provided on the partition wall 2039. The main body case 2002 includes a control unit 2005 that stores the capacitance detected by the electrostatic sensor 2040 and can attach the water storage container 2019 to the cavity 2010 and detect a predetermined water level in the water storage container 2019 based on changes in the capacitance detected by the electrostatic sensor 2040.

[0146] The partition wall 2039 is made up of surfaces provided on the front, rear, and left sides of the water storage container 2019 when viewed from the front of the air conditioning device 2001. The material of the partition wall 2039 is resin, and one example of the material is ABS resin. The partition wall 2039 is configured to surround at least a portion of the rear side, left side, and front side of the main body case 2002 in the water storage container 2019.

[0147] FIG. 42 is a diagram showing a cross-sectional configuration of the electrostatic sensor 2040 and its vicinity as viewed from the right side as viewed facing the front of the air conditioning apparatus 2001. The electrostatic sensor 2040 detects electrostatic capacitance. The electrostatic sensor 2040 utilizes the fact that each object has a different electrostatic capacitance to detect changes in an object in a space detectable by the electrostatic sensor as a change in electrostatic capacitance, thereby enabling the presence and position of an object to be detected without contact. The electrostatic sensor 2040 includes a pair of electrodes. The electrostatic sensor 2040 may also include only one electrode. The capacitance of the electrode changes depending on the distance between the electrostatic sensor 2040 and the water. For example, the electrostatic capacitance detected by the electrostatic sensor 2040 decreases as the distance between the electrostatic sensor 2040 and the water increases. The electrostatic sensor 2040 is installed on a side of the partition wall 2039 that is perpendicular to the water surface, facing the water in the water storage container 2019 via the side of the water storage container 2019. Here, the arrangement of the water storage container 2019 and the isolation wall 2039 is configured so that the capacitance detected by the electrostatic sensor 2040 when the water storage container 2019 is attached to the hollow portion 2010 is greater than the capacitance detected by the electrostatic sensor 2040 when the water storage container 2019 is not attached to the hollow portion 2010, and so that the capacitance detected by the electrostatic sensor 2040 when the water storage container 2019 containing water at a predetermined level is attached to the hollow portion 2010 is greater than the capacitance detected by the electrostatic sensor 2040 when the water storage container 2019 not containing water is attached to the hollow portion 2010.

[0148] Specifically, in a state where water storage container 2019 containing no water is attached to cavity 2010, electrostatic sensor 2040 detects a change in capacitance due to water storage container 2019 in addition to separation wall 2039 facing electrostatic sensor 2040. In a state where water storage container 2019 is not attached to cavity 2010, electrostatic sensor 2040 detects the capacitance of separation wall 2039 facing electrostatic sensor 2040. Water storage container 2019 is made of resin, which has a larger capacitance than air. Therefore, the capacitance detected by electrostatic sensor 2040 in a state where water storage container 2019 is attached to cavity 2010 is larger than the capacitance detected by electrostatic sensor 2040 in a state where cavity 2010 is filled with only air and water storage container 2019 is not attached.

[0149] Furthermore, when water storage container 2019 without water is attached to hollow portion 2010, electrostatic sensor 2040 detects the capacitance of water storage container 2019 facing electrostatic sensor 2040. On the other hand, when water storage container 2019 containing a predetermined level of water is attached to hollow portion 2010, electrostatic sensor 2040 detects the capacitance of water storage container 2019 facing electrostatic sensor 2040 and the capacitance of the water in water storage container 2019 facing electrostatic sensor 2040. Because water storage container 2019 is made of resin, the capacitance of the water in water storage container 2019 is greater than the capacitance of water storage container 2019 itself. In other words, the capacitance detected by the electrostatic sensor 2040 when the water storage container 2019 containing a predetermined level of water is attached to the hollow portion 2010 is greater than the capacitance detected by the electrostatic sensor 2040 when the water storage container 2019 containing no water is attached to the hollow portion 2010.

[0150] This enables the control unit 2005 to detect the attachment of the water storage container 2019 to the hollow portion 2010 and the presence of a predetermined level of water in the water storage container 2019, based on a change in the electrostatic capacitance detected by the electrostatic sensor 2040. When the control unit 2005 detects the attachment of the water storage container 2019 and the presence of a predetermined level of water in the water storage container 2019 by the electrostatic sensor 2040, the control unit 2005 controls the operation of the drive unit 2029 of the gas-liquid contact portion 2021 and the rotation speed of the fan unit 2013 of the blower 2003, etc., in accordance with the operation of the operation unit 2006.

[0151] Furthermore, electrostatic sensor 2040 is provided on the outer surface of isolation wall 2039. Specifically, electrostatic sensor 2040 is provided facing water storage container 2019 across isolation wall 2039 provided behind water storage container 2019 when viewed from the front of air conditioning apparatus 2001. Furthermore, isolation wall 2039 provided at the rear spatially separates electrostatic sensor 2040 from cavity 2010. This prevents the user from touching electrostatic sensor 2040, ensuring safety and preventing breakdowns and deterioration of electrostatic sensor 2040 and misalignment of the installation position.

[0152] Furthermore, the minimum distance between the portion of partition wall 2039 where electrostatic sensor 2040 is provided and the side surface of water storage container 2019 is smaller than the thickness of the side surface of water storage container 2019. Specifically, in order to make water storage container 2019 detachable, a gap is provided between partition wall 2039, which is provided behind water storage container 2019 when viewed from the front of air conditioning device 2001, and water storage container 2019, and this gap is not uniform due to inclination, etc. The minimum distance of this gap is smaller than the thickness of the side surface of water storage container 2019 facing electrostatic sensor 2040. The thickness of the side surface of water storage container 2019 is, for example, 1.0 mm to 3.0 mm. This allows the electrostatic sensor 2040 to be closer to the liquid in water storage container 2019, allowing electrostatic sensor 2040 to detect changes in capacitance with high sensitivity.

[0153] Furthermore, the minimum distance between the portion of partition wall 2039 where electrostatic sensor 2040 is provided and the side surface of water storage container 2019 is smaller than the thickness of the portion of partition wall 2039 where electrostatic sensor 2040 is provided. Specifically, the thickness of the portion of partition wall 2039 where electrostatic sensor 2040 is provided is, for example, 0.5 mm to 3.0 mm. This allows the distance between electrostatic sensor 2040 and the liquid in water storage container 2019 to be reduced, allowing electrostatic sensor 2040 to detect changes in capacitance with high sensitivity.

[0154] Furthermore, the thickness dimension of the partition wall 2039 is smallest at the portion where the electrostatic sensor 2040 is provided. Specifically, the partition wall 2039 has a certain thickness to ensure the strength of the product, but the portion of the partition wall 2039 where the electrostatic sensor 2040 is provided only needs to be thick enough to hold the electrostatic sensor 2040. Therefore, the portion of the partition wall 2039 where the electrostatic sensor 2040 is provided has the smallest thickness dimension than the portion of the partition wall 2039 where the electrostatic sensor 2040 is not provided. This allows the electrostatic sensor 2040 to be closer to the liquid in the water storage container 2019, allowing the electrostatic sensor 2040 to detect changes in capacitance with high sensitivity.

[0155] Figures 44 and 45 are cross-sectional views of an air conditioning apparatus 2001 according to embodiment 3 of the present disclosure, viewed from above. The cross-sectional heights of Figures 44 and 45 are different. As shown in Figures 44 and 45, the air conditioning apparatus 2001 has a distance restriction unit 2041 that restricts the distance between the electrostatic sensor 2040 and the water storage container 2019. The distance restriction unit 2041 has a front restriction unit 2042 and a rear restriction unit 2043.

[0156] The front restricting portion 2042 is provided forward of the electrostatic sensor 2040 in the insertion direction of the water storage container 2019 when the water storage container 2019 is attached to the hollow portion 2010. Specifically, the front restricting portion 2042 has a front water storage restricting portion 2042a provided on the water storage container 2019 and a front isolation restricting portion 2042b provided on the isolation wall 2039.

[0157] The front water storage restriction portion 2042a has a shape in which a surface or a protrusion protrudes from the water storage container 2019, or a shape in which a surface or a protrusion can be accommodated.

[0158] The front isolation restriction part 2042b has a shape that allows it to be inserted and removed in accordance with the shape of the front water storage restriction part 2042a. The gap distance between the front water storage restriction part 2042a and the front isolation restriction part 2042b is smaller than the minimum distance between the part of the separation wall 2039 where the electrostatic sensor 2040 is provided and the side surface of the water storage container 2019.

[0159] As a result, the minimum distance between the portion of separating wall 2039 where electrostatic sensor 2040 is provided and the side surface of water storage container 2019 on the front side restricting portion 2042 side does not vary by more than the minimum distance, and it is possible to reduce the variation in capacitance even if the minimum distance varies due to attachment or detachment of water storage container 2019. Therefore, control unit 2005 can detect attachment of water storage container 2019 to hollow portion 2010 and the presence of water at a predetermined level.

[0160] The rear regulating portion 2043 is provided rearward of the electrostatic sensor 2040 in the insertion direction of the water storage container 2019 when the water storage container 2019 is attached to the hollow portion 2010. Specifically, the rear regulating portion 2043 has a rear water storage regulating portion 2043a provided on the water storage container 2019 and a rear isolation regulating portion 2043b provided on the isolation wall 2039.

[0161] The rear water storage restriction portion 2043 a has a shape in which the surface parallel to the separating wall 2039 on which the electrostatic sensor 2040 is provided protrudes from the water storage container 2019 .

[0162] The rear isolation restriction portion 2043b has a shape that fits into the shape of the rear water retention restriction portion 2043a. The gap distance between the rear water retention restriction portion 2043a and the rear isolation restriction portion 2043b is smaller than the minimum distance between the portion of the separation wall 2039 where the electrostatic sensor 2040 is provided and the side surface of the water storage container 2019.

[0163] As a result, the minimum distance on the rear-side restricting portion side between the part of separating wall 2039 where electrostatic sensor 2040 is provided and the side surface of water storage container 2019 does not vary by more than the minimum distance, and it is possible to reduce the variation in capacitance even if the minimum distance varies due to attachment or detachment of water storage container 2019. Therefore, control unit 2005 can detect attachment of water storage container 2019 to cavity 2010 and the presence of water at a predetermined level.

[0164] Figure 46 is a cross-sectional view of an air conditioning apparatus 2001 according to the third embodiment of the present disclosure, viewed from the front. As shown in Figure 46, the cavity and the water storage container have temporary fixing portions 2044 that temporarily fix the water storage container 2019 in the cavity 2010 when the water storage container 2019 is inserted to a predetermined position in the cavity 2010. When the water storage container 2019 is temporarily fixed in the cavity 2010, the distance between the electrostatic sensor 2040 and the water storage container 2019 is regulated by the front regulating portion 2042 and the rear regulating portion 2043.

[0165] Temporary fixing portion 2044 has a claw shape extending from the bottom surface of hollow portion 2010 toward the inside of hollow portion 2010. Water storage container 2019 is provided with a shape corresponding to temporary fixing portion 2044, and when water storage container 2019 is inserted into hollow portion 2010, temporary fixing portion 2044 catches on water storage container 2019, thereby temporarily fixing water storage container 2019 within hollow portion 2010.

[0166] This allows the electrostatic sensor 2040 to accurately detect capacitance by restricting the distance between the electrostatic sensor 2040 and the water storage container 2019. This allows the control unit 2005 to detect whether the water storage container 2019 is attached and whether there is liquid in the water storage container 2019.

[0167] In the air conditioning apparatus 2001 described above, the electrostatic sensor 2040 is provided on the outer surface of the partition wall 2039 and is provided facing the water in the water storage container 2019 across the side of the partition wall 2039 and detects capacitance. The control unit 2005 stores the capacitance detected by the electrostatic sensor 2040 and detects a predetermined water level based on the capacitance detected by the electrostatic sensor 2040. Therefore, the air conditioning apparatus 2001 detects the water level in the water storage container 2019 by utilizing the characteristic that the capacitance detected by the electrostatic sensor 2040 changes depending on the surrounding substances, i.e., the characteristic that the capacitance changes depending on the amount of water present near the electrostatic sensor 2040. In other words, if the capacitance value detected by the electrostatic sensor 2040 falls below a threshold, the control unit 2005 determines that the water in the water storage container 2019 has run out of water and prompts the user to fill the tank 2024 with water. The user is prompted to add water to tank 2024 by, for example, lighting or blinking a light (not shown) provided on operation unit 2006. Note that the drought here does not have to be a state in which the water in water storage container 2019 is completely depleted, and may be a state in which a small amount of water remains in water storage container 2019.

[0168] If this type of water supply is repeated, scale, which is inorganic salts such as calcium, magnesium, and silica contained in tap water, will precipitate on the sides or bottom of water storage container 2019. Because scale can retain water, if precipitated scale retains water at a water level where there is no water, electrostatic sensor 2040 may erroneously detect the presence of water even though there is no water at that water level. Air conditioning apparatus 2001 according to embodiment 3 has the following structure in order to quickly remove the moisture contained in scale precipitated on the sides or bottom of water storage container 2019.

[0169] Figures 47(a), (b), and (c) show the relationship between capacitance and water level. Figure 47(a) shows the relationship between capacitance and water level under normal conditions. The horizontal axis represents the 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 detected as changes in capacitance. For this reason, a capacitance corresponding to a water level equal to or higher than the drought level is set as a threshold value in advance, and when the capacitance measured by the electrostatic sensor 2040 reaches the threshold value, the control unit 2005 detects a drought. The threshold value is stored in the memory unit 2050 (Figure 43).

[0170] In the above-described FIG. 42 , an opening 2024a is disposed above the water storage container 2019, and a bottom 2062 is disposed below the water storage container 2019. A step surface 2064 extending horizontally is disposed in the water storage container 2019 at a height between the opening 2024a and the bottom 2062. The step surface 2064 may be inclined downward toward the inside of the water storage container 2019. The area of ​​the water storage container 2019 below the step surface 2064 (the area of ​​the water surface when the water surface exists below the step surface 2064) is sharply smaller than the area of ​​the water storage container 2019 above the step surface 2064 (the area of ​​the water surface when the water surface exists above the step surface 2064). The height corresponding to the step surface 2064 is defined as a boundary position 2066. For example, the boundary position 2066 is higher than the water level during a drought. The boundary position 2066 may be the water level of the drought.

[0171] Because the area of ​​water storage container 2019 changes abruptly at boundary position 2066, the change in capacitance in response to a change in water level in the portion below boundary position 2066 is more rapid than the change in capacitance in response to a change in water level in the portion above boundary position 2066. In other words, because water rapidly moves away from electrostatic sensor 2040 near boundary position 2066, step surface 2064 is provided to make it easier to detect a drought by utilizing the abrupt change in the capacitance detected by electrostatic sensor 2040. The capacitance corresponding to boundary position 2066 is set as the aforementioned threshold value.

[0172] When the air conditioning apparatus 2001 performs a humidifying operation, the water level in the water storage container 2019 drops, and water droplets adhere to the stepped surface 2064 or the wall surface of the water storage container 2019. When the moisture adhering to the stepped surface 2064 or the wall surface of the water storage container 2019 dries, the moisture precipitates as scale. Figure 47 (b) shows the relationship between capacitance and water level when water is retained by the scale. When the scale retains water, the capacitance detected by the electrostatic sensor 2040 increases. In other words, even if the water level in the water storage container 2019 is the same, if water is retained by scale present at a water level where there is no water, the capacitance detected by the electrostatic sensor 2040 is higher than when water is not retained (scale is not present on the stepped surface 2064 or the wall surface). As a result, the water level when the capacitance reaches the threshold value is lower than the boundary position 2066 (the water level of a drought). In other words, it becomes difficult to detect a drought.

[0173] Figure 47(c) shows the relationship between capacitance and water level when water supply and drought are repeated from Figure 47(b). Scale increases as water supply and drought are repeated, and the increased scale retains water, causing the capacitance detected by the electrostatic sensor 2040 to saturate at a high level and not reach the threshold. As a result, drought is not detected.

[0174] To detect the presence or absence of liquid in water storage container 2019 with high accuracy, the influence of water retention due to scale must be reduced. To this end, air conditioning device 2001 according to embodiment 3 is configured as follows. In FIG. 33 , if the height of air conditioning device 2001 is "10," air intake port 2007 has a height ranging from approximately "0" to "6." As described above, blower 2003 draws air from intake port 2007 and blows it to outlet 2008 via air conditioning unit 2004. Air is drawn in from various heights at intake port 2007. Therefore, airflows taken in from various heights exist in air passage 2011. As a result, at least a portion of the air blown by blower 2003 reaches step surface 2064 or the side surface (rear surface) of water storage container 2019 and comes into contact with step surface 2064 or the side surface of water storage container 2019. When air comes into contact with the step surface 2064 or the side surface of the water storage container 2019, moisture contained in the scale on the step surface 2064 or the side surface of the water storage container 2019 is removed.

[0175] According to the third embodiment, at least a portion of the air blown by the blower 2003 comes into contact with the side surface of the water storage container 2019, thereby enabling early removal of moisture contained in scale. Furthermore, because moisture contained in scale deposited on the side surface of the water storage container 2019 is quickly removed, the water storage container 2019 and the presence or absence of liquid therein can be detected with high accuracy without using a float with a built-in magnet, thereby minimizing unevenness and making the water storage container 2019 easy to maintain. Furthermore, because the water storage container 2019 has a step, water can be rapidly moved away from the electrostatic sensor 2040 when the water level is near the drought level. Furthermore, because water is rapidly moved away from the electrostatic sensor 2040 when the water level is near the drought level, the capacitance detected by the electrostatic sensor 2040 can be rapidly changed. Furthermore, the rapid change in the capacitance detected by the electrostatic sensor 2040 makes it easier to detect the drought level.

[0176] (Embodiment 4) Next, embodiment 4 will be described. Embodiment 4 relates to an air conditioning apparatus 2001 similar to embodiment 3. Embodiment 4 relates to processing when the capacitance detected by the electrostatic sensor 2040 falls below a threshold value. Note that the threshold value in embodiment 4 is different from the threshold value in embodiment 3. The threshold value in embodiment 3 is a value set to detect the water level during a drought, as shown in FIG. 47(a). The threshold value in embodiment 4 may be higher than the threshold value in embodiment 3. Below, the threshold value in the example of embodiment 4 will be described as being higher than the threshold value in embodiment 3. That is, a first threshold value set to detect the water level during a drought and a second threshold value higher than the first threshold value are provided. Note that the second threshold value is lower than the capacitance detected by the electrostatic sensor 2040 when the water level in the water storage container 2019 is at the upper end of the notch 2025c at the lower end of the cylindrical portion 2025a of the lid 2025. When the water level in water storage container 2019 is at the upper end of notch 2025c at the lower end of cylindrical portion 2025a of lid 2025, it can be said that water storage container 2019 is full of water. Note that "full" here may mean that water storage container 2019 is not 100% filled with water. Here, the differences from embodiment 3 will be mainly explained.

[0177] As described above, the control unit 2005 compares the capacitance detected by the electrostatic sensor 2040 with the threshold value stored in the memory unit 2050. The capacitance detected by the electrostatic sensor 2040 corresponds to the detected water level. FIG. 48 shows a table stored in the memory unit 2050. The table shows the conditions for comparing the capacitance with the threshold value (second threshold value) and the air volume. The control unit 2005 determines the air volume "A1" when the capacitance is equal to or greater than the threshold value (second threshold value), and determines the air volume "A2" when the capacitance is less than the threshold value (second threshold value). Here, the air volume "A2" is greater than the air volume "A1." The control unit 2005 operates the motor unit 2012 based on the determined air volume. In other words, when the water level approaches drought, the air volume of the fan 2003 is increased. If the air volume of the fan 2003 is originally set to a high air volume (A2), the air volume of the fan 2003 is not changed. Here, "A2" may be the maximum air volume that can be set. Also, "A2" may be an air volume that is half or more of the maximum air volume that can be set.

[0178] The subject of the device, system, or method disclosed herein includes a computer. The computer executes a program to realize the functions of the subject of the device, system, or method disclosed herein. The computer includes, as its main hardware configuration, a processor that operates according to the program. The type of processor is not important as long as it can realize the functions by executing the program. The processor is composed of one or more electronic circuits, including a semiconductor integrated circuit (IC) or an LSI (Large Scale Integration). The multiple electronic circuits may be integrated into a single chip or may be provided on multiple chips. The multiple chips may be integrated into a single device or may be provided on 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 may be pre-stored on the recording medium or may be supplied to the recording medium via a wide area communication network, including the Internet.

[0179] The operation of the air conditioning apparatus 2001 configured as described above will now be described. Figure 49 is a flowchart showing the procedure for controlling air volume by the air conditioning apparatus 2001. The electrostatic sensor 2040 detects capacitance (S10). If the capacitance is equal to or greater than a threshold value (second threshold value) (Y in S12), the control unit 2005 sets the air volume of the fan 2003 to A1 (S14). On the other hand, if the capacitance is not equal to or greater than the threshold value (second threshold value) (N in S12), the control unit 2005 sets the air volume of the fan 2003 to A2 (S16).

[0180] According to the third embodiment, the air volume of the fan 2003 is increased when the detected water level is below the threshold value, rather than when the detected water level is equal to or greater than the threshold value, thereby enabling the moisture contained in the scale to be dried more quickly. Furthermore, since the moisture contained in the scale is dried more quickly, the accuracy of drought detection can be improved. Furthermore, the air volume of the fan 2003 can be increased when scale (water-retaining scale) is present at a position higher than the water level (water level without water), thereby preventing unnecessary high-air volume operation. In other words, the drying operation of the water-retaining scale can be performed efficiently. Furthermore, since the air volume of the fan 2003 is operated at a high air volume when the detected capacitance is lower than the threshold value, the moisture contained in the scale can be dried more quickly.

[0181] (Embodiment 5) Next, embodiment 5 will be described. Embodiment 5 relates to the same air conditioning apparatus 2001 as described above. When the air conditioning apparatus 2001 performs humidification, the water level in the water storage container 2019 decreases over time. Therefore, the capacitance detected by the electrostatic sensor 2040 also decreases over time. When the air conditioning apparatus 2001 performs humidification, if the change in capacitance detected by the electrostatic sensor 2040 is small compared to the amount of humidification, it is estimated that a large amount of scale has deposited. In other words, the water level estimated from the capacitance detected by the electrostatic sensor 2040 may deviate from the actual water level due to retained scale. When the change in capacitance detected by the electrostatic sensor 2040 is small compared to the amount of humidification, the air conditioning apparatus 2001 according to embodiment 5 increases the airflow rate of the blower 2003 to dry out the moisture retained by the scale in a short period of time. Here, the differences from the previous embodiments will be mainly described.

[0182] In the fifth embodiment, the amount of humidification by air conditioner 2001 is estimated based on the space temperature, using the relationship that the higher the temperature of the space in which air conditioner 2001 is installed (hereinafter referred to as "space temperature"), the greater the amount of humidification per unit time by air conditioner 2001. Air conditioner 2001 is equipped with a temperature sensor (not shown), which measures the space temperature. The temperature sensor outputs the space temperature to control unit 2005 (FIG. 13).

[0183] The control unit 2005 receives the space temperature from the temperature sensor. The control unit 2005 references a table stored in the memory unit 50 and estimates the amount of humidification per unit time by the air conditioning device 2001 based on the space temperature. An example of the unit time is one hour. Note that the unit time may be shorter or longer than one hour. Figures 50(a), (b), and (c) show tables stored in the memory unit 50. In the table shown in Figure 50(a), the space temperature is associated with the amount of humidification per unit time. The space temperatures "B1," "B2," ..., "BN" are arranged in ascending order. Meanwhile, the humidification amounts per unit time "C1," "C2," ..., "CN" are arranged in ascending order. In other words, the higher the space temperature, the greater the amount of humidification per unit time. To explain in more detail, when the humidity in the space is the same, the higher the space temperature, the greater the amount of humidification per unit time. Each value in the table is obtained in advance through simulation or experiment. Figures 50(b)-(c) will be described later, and we will return to Figure 43.

[0184] The control unit 2005 references another table stored in the memory unit 2050 to obtain a threshold value from the humidification amount per unit time. The threshold value is a threshold value for the change in capacitance per unit time. In the other table shown in FIG. 50(b), the humidification amount per unit time and the threshold value are also associated. The humidification amount per unit time, "C1," "C2," ..., "CN," are arranged in ascending order. The threshold values, "D1," "D2," ..., "DN," are arranged in ascending order. This relationship is based on the fact that as the humidification amount per unit time increases, the change in capacitance per unit time also increases. Each value in the other table is obtained in advance by simulation or experiment. FIG. 50(c) will be described later, and we will return to FIG. 43.

[0185] The control unit 2005 periodically receives the capacitance detected by the electrostatic sensor 2040 and calculates the difference in capacitance measured at intervals of a unit time to obtain the change in capacitance per unit time. The control unit 2005 compares the obtained change in capacitance per unit time with the obtained threshold value. FIG. 50( c ) shows another table stored in the storage unit 2050. This table shows the conditions for comparing the change in capacitance per unit time with the threshold value and the air volume. The control unit 2005 determines the air volume "A1" when the change in capacitance per unit time is equal to or greater than the threshold value, and determines the air volume "A2" when the change in capacitance per unit time is less than the threshold value. Here, the air volume "A2" is greater than the air volume "A1." The control unit 2005 operates the motor unit 2012 based on the determined air volume. In other words, the control unit 2005 increases the air volume of the blower 2003 when the change in capacitance per unit time is less than the threshold value, rather than when the change in capacitance per unit time is equal to or greater than the threshold value. That is, if the change in capacitance is smaller than the threshold value, the control unit 2005 determines that the correct water level in the water storage container 2019 has not been detected due to water-retained scale, and increases the airflow rate of the blower 2003 to dry the water-retained scale. Note that if the airflow rate of the blower 2003 is originally set to high airflow rate (A2), the airflow rate of the blower 2003 is not changed. Here, "A2" may be the maximum settable airflow rate. Also, "A2" may be an airflow rate that is more than half of the maximum settable airflow rate.

[0186] The control unit 2005 may turn on or blink a light (not shown) provided on the operation unit 2006 when the change in capacitance per unit time is smaller than a threshold value. Turning on or blinking the light (not shown) provided on the operation unit 2006 corresponds to issuing an alert. The light (not shown) provided on the operation unit 2006 corresponds to an alert unit. By issuing an alert, the user performs the work of removing scale from the water storage container 2019.

[0187] In the explanation so far, the control unit 2005 estimates the amount of humidification based on the space temperature. The control unit 2005 may also estimate the amount of humidification based on the humidity of the space in which the air conditioning device 2001 is installed (hereinafter referred to as "space humidity"). In this case, the space humidity is measured by a humidity sensor, and the control unit 2005 uses the relationship that the lower the space humidity, the higher the amount of humidification. The control unit 2005 may also estimate the amount of humidification based on the air volume set in the blower 2003. In this case, the control unit 2005 uses the relationship that the higher the air volume, the higher the amount of humidification. Furthermore, the control unit 2005 may estimate the amount of humidification based on a combination of two or more of the space temperature, space humidity, and air volume.

[0188] The operation of the air conditioner 2001 configured as described above will now be described. FIG. 51 is a flowchart showing the procedure for controlling the air volume by the air conditioner 2001. The temperature sensor detects the space temperature (S50). The control unit 2005 estimates the amount of humidification per unit time based on the space temperature (S52). The control unit 2005 identifies a threshold value based on the amount of humidification per unit time (S54). The control unit 2005 acquires the change in capacitance per unit time (S56). If the change is equal to or greater than the threshold value (Y in S58), the control unit 2005 sets the air volume of the fan 2003 to A1 (S60). On the other hand, if the capacitance is not equal to or greater than the threshold value (N in S58), the control unit 2005 sets the air volume of the fan 2003 to A2 (S62).

[0189] According to the fifth embodiment, when the change in capacitance detected by electrostatic sensor 2040 is small relative to the amount of humidification, the air volume of blower 2003 is increased, thereby enabling the moisture contained in scale to be dried quickly. Also, when the change in capacitance detected by electrostatic sensor 2040 is small relative to the amount of humidification, the air volume of blower 2003 is set to high, thereby enabling the moisture contained in scale to be dried quickly. Also, when the change in capacitance detected by electrostatic sensor 2040 is small relative to the amount of humidification, an alarm is issued, thereby notifying the user of the presence of scale.

[0190] (Embodiment 6) Next, embodiment 6 will be described. Embodiment 6 relates to an air conditioning apparatus 2001 similar to the previous ones. The previous air conditioning apparatus 2001 is provided with an air duct 2011 that sends air drawn in from an air intake 2007 to an air outlet 2008 via a filter 2027. The air that passes through air duct 2011 and is blown out from air outlet 2008 is humidified. In addition to this air duct 2011, the air conditioning apparatus 2001 according to embodiment 6 also has an air duct that does not pass through filter 2027, and air that has passed through this air duct is blown out from air outlet 2008 without being humidified. Here, the differences from the previous ones will be mainly described.

[0191] Air duct 2011 shown in Fig. 53 sends air drawn in from air intake 2007 to air outlet 2008 via filter 2027. Such air duct 2011 is defined as a "humidified air duct." Air conditioning apparatus 2001 also includes a non-humidified air duct (not shown) that draws air drawn in from air intake 2007 and sends it to air outlet 2008 without passing through filter 2027. A damper (not shown) is provided between air intake 2007 and filter 2027, and the ratio of air passing through the humidified air duct to air passing through the non-humidified air duct is adjusted according to the angle of the damper. A shutter may be provided instead of a damper.

[0192] The damper is connected to the control unit 2005, which controls the angle of the damper. For example, in a situation where the motor unit 2012 is operated at the above-mentioned air volume "A2," the control unit 2005 controls the angle of the damper so that the air does not pass through the non-humidifying air duct but passes through the humidifying air duct. In other situations, the control unit 2005 controls the angle of the damper so that, for example, the lower the spatial humidity, the greater the proportion of air that passes through the humidifying air duct.

[0193] According to the sixth embodiment, the moisture content of the air can be easily adjusted by providing a humidified air duct and a non-humidified air duct and switching between them. Furthermore, when performing an operation to dry scale that has retained moisture, the amount of air passing through the humidified air duct can be increased, thereby accelerating the drying of the scale.

[0194] An outline of one aspect of the present disclosure is as follows.

[0195] (Item 1) A device comprising: a main body case (2002) having an air intake (2007) and an air outlet (2008); a water storage container (2019) for storing water, which is provided in a hollow portion (2010) partially surrounded by a partition wall (2039) in the main body case (2002); a blower (2003) for adding water from the water storage container (2019) to air drawn in through the air intake (2007) and blowing the air to the air outlet (2008); an electrostatic sensor (2040) provided in the partition wall (2039) for detecting electrostatic capacitance; and a control unit (2005) for storing the electrostatic capacitance detected by the electrostatic sensor (2040), wherein the hollow portion (2010) extends horizontally inward from one side surface of the main body case (2002), The electrostatic sensor (2040) is arranged facing the water in the water storage container (2019) through the side of the water storage container (2019) from the isolation wall (2039), the control unit (2005) detects the water at the specified level in the water storage container (2019) based on the capacitance detected by the electrostatic sensor (2040), and the air conditioning device (2001) is configured such that at least a portion of the air blown by the blower (2003) comes into contact with the side of the water storage container (2019).

[0196] (Item 2) The air conditioning device (2001) according to claim 1, wherein the electrostatic sensor (2040) is provided on the outer surface of the partition wall (2039).

[0197] (Item 3) The water storage container (2019) has a lower bottom (2062) and an upper opening (2024a), the water storage container (2019) has a boundary position (2066) at a height between the bottom (2062) and the opening (2024a), and the change in capacitance in response to a change in water level in a portion below the boundary position (2066) is more rapid than the change in capacitance in response to a change in water level in a portion above the boundary position (2066).

[0198] (Item 4) The air conditioning apparatus (2001) according to Item 1, wherein the control unit (2005) operates the blower (2003) at an air volume equal to or greater than half of the maximum air volume that can be set when the detected capacitance is lower than a threshold value.

[0199] (Item 5) The air conditioning device (2001) according to Item 1, wherein the control unit (2005) increases the air volume of the blower (2003) when the detected predetermined water level is lower than a threshold value, rather than when the detected capacitance is equal to or greater than a threshold value.

[0200] (Item 6) The air conditioning device (2001) described in Item 1 further comprises a memory unit (2050) that stores a table of threshold values ​​for capacitance change relative to the amount of humidification by the air conditioning device (2001), wherein the control unit (2005) estimates the amount of humidification by the air conditioning device (2001) and obtains the threshold value by referring to the table based on the estimated amount of humidification, and the control unit (2005) obtains the change in capacitance, and if the obtained change in capacitance is smaller than the threshold value, operates the blower (2003) at an air volume that is equal to or greater than half of the maximum settable air volume.

[0201] (Item 7) The air conditioning device (2001) described in Item 1 further comprises a memory unit (2050) that stores a table of threshold values ​​for capacitance change relative to the amount of humidification by the air conditioning device (2001), wherein the control unit (2005) estimates the amount of humidification by the air conditioning device (2001) and obtains the threshold value by referring to the table based on the estimated amount of humidification, and the control unit (2005) obtains the change in capacitance and, if the obtained change in capacitance is smaller than the threshold value, increases the airflow of the blower (2003).

[0202] (Item 8) The air conditioner (2001) according to item 6 or 7, further comprising a notification unit that issues a notification when the change in capacitance in the control unit (2005) is smaller than the threshold value.

[0203] (Item 9) An air conditioning apparatus (2001) as described in item 4 or item 5, comprising a filter (2027) arranged so that its lower end is immersed in the water in the water storage container (2019), and when the air duct that blows air sucked in from the air intake (2007) through the filter (2027) to the air outlet (2008) is defined as a humidified air duct, further comprising a non-humidified air duct that blows air sucked in from the air intake (2007) to the air outlet (2008) without passing through the filter (2027), and a damper that adjusts the ratio of air passing through the humidified air duct and air passing through the non-humidified air duct, wherein the control unit (2005) controls the damper so that air does not pass through the non-humidified air duct but passes through the humidified air duct when the detected capacitance is lower than a threshold value.

[0204] (Item 10) An air conditioning apparatus (2001) as described in item 6 or item 7, comprising a filter (2027) arranged so that its lower end is immersed in the water in the water storage container (2019), and when the air duct that blows air sucked in from the air intake (2007) through the filter (2027) to the air outlet (2008) is defined as a humidified air duct, further comprising a non-humidified air duct that blows air sucked in from the air intake (2007) to the air outlet (2008) without passing through the filter (2027), and a damper that adjusts the ratio of air passing through the humidified air duct and air passing through the non-humidified air duct, wherein the control unit (2005) controls the damper so that the air does not pass through the non-humidified air duct but passes through the humidified air duct when the acquired change in capacitance is smaller than a threshold value.

[0205] The present disclosure has been described above based on the embodiments. These embodiments are merely examples, and it will be understood by those skilled in the art that various modifications are possible in the combination of the respective components or treatment processes, and that such modifications are also within the scope of the present disclosure.

[0206] The present disclosure is expected to be used as an air conditioning device for home or office use.

[0207] REFERENCE SIGNS LIST 1 air conditioner 2 main body case 3 blower 4 air conditioning unit 5 control unit 6 operation unit 7 intake port 8 outlet port 9 panel 10 hollow portion 11 air duct 12 motor unit 13 fan unit 14 casing unit 15 rotating shaft 16 outlet port 19 water storage container 19a opposing surface side 20 tank member 21 gas-liquid contact portion 23 tank holding portion 24 tank 24a opening 25 lid 25a cylindrical portion 25b hole 25c notch 26 valve portion 27 filter 28 filter frame 29 drive unit 30 bearing portion 39 isolation wall 40 electrostatic sensor 41a first water level 41b second water level 42 distance change portion 43 recessed portion 44 flat portion 1001 Air conditioner 1002 Main body case 1003 Blower 1004 Air conditioning unit 1005 Control unit 1006 Operation unit 1007 Air intake 1008 Air outlet 1009 Panel 1010 Cavity 1011 Air path 1012 Motor unit 1013 Fan unit 1014 Casing unit 1015 Rotating shaft 1016 Discharge port 1019 Water storage container 1020 Tank member 1021 Gas-liquid contact portion 1023 Tank holder 1024 Tank 1024a Opening 1025 Lid 1025a Cylindrical portion 1025b Hole 1025c Notch 1026 Valve unit 1027 Filter 1028 Filter frame 1029 Drive unit 1030 Bearing portion 1039 Partition wall 1040 Electrostatic sensor 1041 Distance regulation portion 1042 Front regulation portion 1043 Rear regulation portion 1042a Front water retention regulation portion 1042b Front isolation regulation portion 1043a Rear water retention regulation portion 1043b Rear isolation regulation portion 1044 Temporary fixing portion 2001 Air conditioner 2002 Main body case 2003 Blower 2004 Air conditioning portion 2005 Control portion 2006 Operation portion 2007 Air intake port 2008 Air outlet 2009 Panel 2010 Cavity portion 2011 Air path 2012 Motor portion 2013 Fan portion 2014 Casing portion 2015 Rotating shaft 2016 Outlet port 2019 Water storage container 2020 Tank member 2021 Gas-liquid contact portion 2023 Tank holding portion2024 Tank 2024a Opening 2025 Lid 2025a Cylinder portion 2025b Hole 2026 Valve portion 2027 Filter 2028 Filter frame 2029 Drive portion 2030 Bearing portion 2039 Separation wall 2040 Electrostatic sensor 2041 Distance regulation portion 2042 Front regulation portion 2042a Front water retention regulation portion 2042b Front isolation regulation portion 2043 Rear regulation portion 2043a Rear water retention regulation portion 2043b Rear isolation regulation portion 2044 Temporary fixing portion 2050 Memory portion 2062 Bottom surface 2064 Step surface 2066 Boundary position

Claims

1. An air conditioning apparatus comprising: a main body case having an air intake and an air outlet; a water storage container for storing water located in a hollow space partially surrounded by a partition wall within the main body case; a filter arranged so that its lower end is immersed in the water in the water storage container; a blower for blowing air drawn in through the air intake through the filter to the air outlet; an electrostatic sensor located on the partition wall for detecting electrostatic capacitance; and a control unit for storing the electrostatic capacitance detected by the electrostatic sensor, wherein the electrostatic sensor is located on the partition wall so as to face the water in the water storage container via the side of the water storage container, and the water storage container has a distance change unit that changes the distance between the electrostatic sensor and the water in the water storage container from a first water level to a second water level higher than the first water level, and the control unit determines the water level in the water storage container to be the first water level based on the change in electrostatic capacitance detected by the electrostatic sensor.

2. An air conditioning apparatus according to claim 1, wherein the distance changer has a recessed portion recessed inward into the water storage container on the opposing side of the water storage container that faces the electrostatic sensor.

3. An air conditioner according to claim 2, wherein the distance change portion has a flat portion on the upper surface of the recessed portion.

4. An air conditioning device as described in claim 3, wherein the recessed portion is provided between the electrostatic sensor and the filter at the first water level, and the distance from the opposing side of the water storage container to the periphery of the flat portion on the filter side is longer than the distance from the periphery of the flat portion on the filter side to the filter.

5. An air conditioning apparatus according to claim 3 or 4, wherein the flat portion slopes downward from the opposing side surface of the water storage container toward the inside of the water storage container.

6. An air conditioning device as described in claim 3 or claim 4, wherein the electrostatic sensor is arranged on the partition wall that is perpendicular to the water surface so as to face the water in the water storage container via the side of the water storage container and the partition wall.

7. A device comprising: a main body case having an air intake and an air outlet; a water storage container for storing water, which is detachably mounted in a hollow portion surrounded by a partition wall within the main body case; a filter arranged so that its lower end is immersed in the water in the water storage container; a blower for blowing air drawn in through the air intake through the filter to the air outlet; an electrostatic sensor mounted on the partition wall for detecting capacitance; and a control unit for storing the capacitance detected by the electrostatic sensor, wherein the hollow portion extends horizontally inward from one side surface of the main body case, and the electrostatic sensor is mounted on the partition wall so as to face the water in the water storage container via the side surface of the water storage container, and the electrostatic capacitance detected by the electrostatic sensor when the water storage container is attached to the hollow portion is greater than the electrostatic capacitance detected by the electrostatic sensor when the water storage container is not attached to the hollow portion, The capacitance detected by the electrostatic sensor when the water storage container containing water at a predetermined level is attached to the hollow portion is greater than the capacitance detected by the electrostatic sensor when the water storage container without water is attached to the hollow portion, and the control unit detects the attachment of the water storage container to the hollow portion and the water at the predetermined level based on the change in capacitance detected by the electrostatic sensor.

8. An air conditioner according to claim 7, wherein the electrostatic sensor is provided on the outer surface of the partition wall.

9. An air conditioner according to claim 8, wherein the minimum distance between the portion of the isolation wall where the electrostatic sensor is provided and the side surface of the water storage container is smaller than the thickness of the side surface of the water storage container.

10. An air conditioning apparatus as described in claim 9, wherein the minimum distance between the portion of the partition wall where the electrostatic sensor is provided and the side of the water storage container is smaller than the thickness of the portion of the partition wall where the electrostatic sensor is provided.

11. The air conditioner according to claim 10, wherein the thickness of the partition wall is smallest at the portion where the electrostatic sensor is provided.

12. The air conditioner according to claim 11, further comprising a distance regulation unit that regulates the distance between the electrostatic sensor and the water storage container.

13. An air conditioning apparatus as described in claim 12, wherein the distance control section has a front control section that is provided forward of the electrostatic sensor in the insertion direction of the water storage container when the water storage container is attached to the hollow section.

14. An air conditioning apparatus as described in claim 13, wherein the distance control section has a rear control section that is provided rearward of the electrostatic sensor in the insertion direction of the water container when the water container is attached to the hollow section.

15. An air conditioning device as described in claim 14, which has a temporary fixing portion that temporarily fixes the water storage container within the hollow portion when the water storage container is inserted to a predetermined position within the hollow portion, and when the water storage container is temporarily fixed within the hollow portion, the front side regulating portion and the rear side regulating portion regulate the distance between the electrostatic sensor and the water storage container.

16. An air conditioning apparatus comprising: a main body case having an air intake port and an air outlet port; a water storage container for storing water located in a hollow portion within the main body case that is partially surrounded by a partition wall; a blower that absorbs water from the water storage container into air drawn in through the air intake port and blows the air out the air outlet port; an electrostatic sensor located on the partition wall that detects electrostatic capacitance; and a control unit that stores the electrostatic capacitance detected by the electrostatic sensor, wherein the hollow portion extends horizontally inward from one side of the main body case; the electrostatic sensor is located from the partition wall so as to face the water in the water storage container via the side of the water storage container; the control unit detects water at a predetermined 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 comes into contact with the side of the water storage container.

17. The air conditioner according to claim 16, wherein the electrostatic sensor is provided on the outer surface of the partition wall.

18. An air conditioning apparatus as described in claim 16, wherein the water storage container has a lower bottom and an upper opening, the water storage container has a boundary position at a height between the bottom and the opening, and the change in capacitance in response to a change in water level in the portion below the boundary position is more rapid than the change in capacitance in response to a change in water level in the portion above the boundary position.

19. An air conditioning apparatus according to claim 16, wherein the control unit operates the blower at an air volume equal to or greater than half of the maximum settable air volume when the detected capacitance is lower than a threshold value.

20. An air conditioning apparatus as described in claim 16, wherein the control unit increases the airflow rate of the blower when the detected capacitance is lower than the threshold value, rather than when the detected capacitance is equal to or higher than the threshold value.

21. An air conditioning apparatus as described in claim 16, further comprising a memory unit that stores a table of threshold values ​​for capacitance change relative to the amount of humidification by the air conditioning apparatus, wherein the control unit estimates the amount of humidification by the air conditioning apparatus and obtains the threshold value by referring to the table based on the estimated amount of humidification, and the control unit obtains the change in capacitance, and if the obtained change in capacitance is smaller than the threshold value, operates the blower at an airflow rate that is equal to or greater than half of the maximum settable airflow rate.

22. An air conditioning apparatus as described in claim 16, further comprising a memory unit that stores a table of threshold values ​​for capacitance change relative to the amount of humidification by the air conditioning apparatus, wherein the control unit estimates the amount of humidification by the air conditioning apparatus and obtains the threshold value by referring to the table based on the estimated amount of humidification, and the control unit obtains the change in capacitance and increases the airflow of the blower when the obtained change in capacitance is smaller than the threshold value rather than when the obtained change in capacitance is equal to or greater than the threshold value.

23. An air conditioner according to claim 21 or 22, further comprising a notification unit that issues a notification when the change in capacitance in the control unit is smaller than the threshold value.

24. An air conditioning apparatus as described in claim 19 or claim 20, further comprising: a filter arranged so that its lower end is immersed in the water in the water storage container; and when the air duct that blows air drawn in from the air intake through the filter to the air outlet is defined as a humidified air duct; a non-humidified air duct that blows air drawn in from the air intake to the air outlet without passing through the filter; and a damper that adjusts the ratio of air passing through the humidified air duct to air passing through the non-humidified air duct; and when the detected capacitance is lower than a threshold value, the control unit controls the damper so that air does not pass through the non-humidified air duct but passes through the humidified air duct.

25. An air conditioning apparatus as described in claim 21 or claim 22, comprising a filter arranged so that its lower end is immersed in the water in the water storage container, and when the air duct that blows air drawn in from the air intake through the filter to the air outlet is defined as a humidified air duct, further comprising: a non-humidified air duct that blows air drawn in from the air intake to the air outlet without passing through the filter; and a damper that adjusts the ratio of air passing through the humidified air duct to air passing through the non-humidified air duct, wherein the control unit controls the damper so that air does not pass through the non-humidified air duct but passes through the humidified air duct when the acquired change in capacitance is smaller than a threshold value.

Images