Drainage structure of air treatment device, air treatment device

Abstract

To provide a drainage structure for an air treatment device and an air treatment device that can be easily maintained. [Solution] The drain water drainage structure according to the embodiment comprises a drainage drain pan 16 provided with a drain outlet 16a for discharging drain water outside the housing 4, and a water-conducting drain pan 17 for guiding water discharged from the humidification unit 15 to the drainage drain pan 16, the water-conducting drain pan 17 being positioned higher than the drainage drain pan 16 and fixed with its bottom surface inclined towards the drainage drain pan 16 side, and the drainage drain pan 16 being placed on the bottom surface of the housing 4 and fixed in a state where it is pressed downward by the water-conducting drain pan 17.

Description

[Technical Field]

[0001] The present disclosure relates to a drain water drainage structure for discharging drain water from an air treatment device, and to an air treatment device. [Background technology]

[0002] As described in Patent Document 1, for example, the air treatment device is provided with a drain water discharge structure for discharging drain water from the device. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2019-196903 Summary of the Invention [Problem to be solved by the invention]

[0004] Such drainage structures may include a drain pan for collecting drainage water and a drain pump for discharging the drainage water accumulated in the drain pan. However, since the drain pan becomes dirty, maintenance such as cleaning the drain pan is required.

[0005] However, conventional structures used a relatively large drain pan for drainage that covered the entire area where water drips within the housing, making it difficult to remove it from the air treatment device for maintenance.

[0006] The present disclosure has been made in consideration of the above-mentioned circumstances, and an object thereof is to provide a drainage structure for an air treatment device and an air treatment device that allow for easy maintenance. [Means for solving the problem]

[0007] The drain water drainage structure of the air treatment device according to the embodiment comprises a drainage drain pan provided with a drain outlet for discharging drain water outside the housing, and a water-conducting drain pan for guiding water discharged from the humidification unit to the drainage drain pan, the water-conducting drain pan being positioned higher than the drainage drain pan and fixed with its bottom surface inclined toward the drainage drain pan, and the drainage drain pan being placed on the bottom surface of the housing and fixed in a state where it is pressed downward by the water-conducting drain pan.

[0008] The air treatment device according to the embodiment includes the drain water drainage structure having the above-described configuration. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is a diagram showing a schematic view of the appearance of an air treatment device according to a first embodiment; [Figure 2] A schematic diagram showing the inside of the air outlet unit [Figure 3] A diagram showing the internal component layout of the air outlet unit. [Figure 4] FIG. 10 is a diagram showing a schematic arrangement and fixing of a drain pan for drainage; [Figure 5] FIG. 1 is a diagram illustrating the arrangement and fixing of a water-conducting drain pan. [Figure 6] A schematic diagram of the water conveyance drain pan as seen from the inspection opening [Figure 7] FIG. 10 is a diagram schematically illustrating a state in which a drain-up device according to a second embodiment is attached. [Figure 8] 1 is a diagram showing a schematic configuration of a mounting plate and a mounting mode; FIG. [Figure 9] Schematic diagram showing the state when drain-up devices of different shapes are installed [Figure 10] FIG. 10 is a diagram illustrating a configuration of a flexible hose according to a third embodiment. [Figure 11] Schematic diagram of flexible hose connection state (part 1) [Figure 12] Schematic diagram of flexible hose connection state (part 2) DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, several embodiments will be described with reference to the drawings. Note that parts that are substantially common to the embodiments are given the same reference numerals, and detailed description thereof will be omitted.

[0011] (First embodiment) 1, the air processing device 1 according to this embodiment has a housing 4 that integrates a total heat exchange unit 2 and an air outlet unit 3. Note that, although this embodiment is based on the assumption that the air processing device 1 includes a total heat exchange unit 2 and an air outlet unit, it can also be applied to, for example, an indoor unit of a general air conditioner that does not use total heat exchange, or a total heat exchanger or ventilator with a humidifying function that does not include a heat exchanger.

[0012] Formed inside the air treatment device 1 are an air supply passage that draws in outdoor air through the outdoor air inlet 5 and supplies it indoors through the indoor air outlet 6, and an exhaust passage that draws in indoor air through the indoor air inlet 7 and discharges it outdoors through the outdoor air outlet 8. The air treatment device 1 also has an electrical component box 9 that houses control circuits and the like attached to the side of the housing 4. The air treatment device 1 is also connected via a flexible hose 10 and an extension hose 11 to a drain-up device 13 attached to the side of the housing 4 by a mounting plate 12.

[0013] In the following description of this embodiment, the side where the indoor air inlet 7 and the indoor air outlet 6 are located will be referred to as the front, the opposite side as the rear, the side where the electrical component box 9 is located will be referred to as the right, the opposite side as the left, and the direction perpendicular to the front-to-back and left-to-right directions will be referred to as the up-down direction. The total heat exchange unit 2 exchanges total heat between the air flowing through the air intake path and the air flowing through the exhaust path. Specifically, the total heat exchange unit 2 includes a total heat exchange element (not shown) inside, and fans provided in the air intake path and the exhaust path, respectively, and the total heat exchange element exchanges temperature (sensible heat) and humidity (latent heat) between the air flowing through the air intake path and the air flowing through the exhaust path.

[0014] As shown in Figure 2, the outlet unit 3 includes a heat exchange unit 14 arranged upstream of the air flow in the air supply passage, a humidification unit 15 arranged downstream of the heat exchange unit 14, a drain pan 16 for water discharge arranged below the heat exchange unit 14, and a drain pan 17 for water conveyance arranged below the humidification unit 15.

[0015] As shown in Figures 3(a) and 3(b), the heat exchange unit 14 includes a pipe through which a refrigerant flows and a heat exchanger 14a having multiple fins that are thermally connected to the pipe. This heat exchanger 14a is connected to an outdoor unit having a compressor (not shown) to form a refrigeration cycle. The heat exchange unit 14 adjusts the temperature by exchanging heat between the heat exchanger 14a and the air flowing through the air supply passage. At this time, condensation may occur on the heat exchanger 14a, generating water droplets that drip downward. Therefore, a drain pan 16 is provided below the heat exchanger 14a.

[0016] Humidifying unit 15 includes water supply unit 15a and humidifying element 15b. Humidifying unit 15 guides water supplied from water supply unit 15a via a water supply pipe (not shown) to a water supply header (not shown) of humidifying element 15b, causing the water to flow downward along humidifying element 15b as indicated by arrow F1. This humidifies the air passing through heat exchanger 14a and humidifying element 15b in the front-to-rear direction and as indicated by arrow F2. At this time, excess water drips downward from humidifying element 15b, and a water-conducting drain pan 17 is disposed below it. The water dripping into water-conducting drain pan 17 flows along the bottom as indicated by arrow F3 and is guided to drain pan 16.

[0017] The drain pan 16 is provided with a drain port 16a for discharging drain water outside the housing 4, and is large enough to cover at least the entire bottom surface of the heat exchange unit 14 in the front-to-back and left-to-right directions. In this embodiment, the drain pan 16 is formed by molding a foam resin using a mold. As a result, the drain pan 16 has a complex shape with a protrusion near the center of the bottom surface that supports the heat exchanger 14a, a drain port 16a formed in the right wall, and a bottom surface that is slightly inclined toward the drain port 16a.

[0018] Furthermore, the drain pan 16 is formed in a shape that allows the same shape to be used regardless of the size of the air processing device 1. Specifically, the drain pan 16 is formed in a size that can accommodate an air processing device 1 equipped with the largest heat exchanger 14a of the product type. Furthermore, as shown in Fig. 12 described below, the same shape can also be used with other air processing devices 1A that have different sizes and configurations.

[0019] The water conveying drain pan 17 is placed on an installation sheet metal 18, and is positioned generally higher than the discharge drain pan 16. The water conveying drain pan 17 is positioned with its bottom surface inclined toward the discharge drain pan 16. The rear wall of the water conveying drain pan 17, which faces the discharge drain pan 16, is inclined downward.

[0020] In this embodiment, water supply drain pan 17 is sized to cover the lower part of humidification unit 15. Therefore, even if condensation or a water leak occurs in water supply unit 15a, the water is guided by water supply drain pan 17 to drainage drain pan 16. In this embodiment, water supply drain pan 17 is formed by sheet metal processing using an NC machining machine, for example. Note that water supply unit 15a and humidification element 15b are not supported by drainage drain pan 16, but are fixed to housing 4 via support structure 19 (see FIG. 2).

[0021] The drain pan 16 for wastewater discharge and the drain pan 17 for water conveyance constitute the drain water discharge structure in this embodiment, and the installation and fixing manner of the drain pan 16 for wastewater discharge and the drain pan 17 for water conveyance will be described in detail below.

[0022] First, we will briefly explain the problems with the conventional structure. Hereinafter, for convenience, the conventional structure will be referred to as a conventional drain pan. The conventional drain pan was formed to a size that covered the entire area below components onto which water could drip, that is, in this embodiment, the entire area below heat exchange unit 14 and humidification unit 15. As a result, although the conventional drain pan had no problems with its drainage function, it was difficult to remove from housing 4, and maintenance such as cleaning was not easy.

[0023] However, even if the drainage drain pan 16 and the water conveyance drain pan 17 are made separate members and the drainage drain pan 16 is simply made smaller, it becomes easier to attach and detach it to the housing 4, but another problem must be solved. Specifically, even if the drainage drain pan 16 is made smaller and easier to attach and detach, it is still necessary to ensure that the drainage drain pan 16 is in an appropriate position and posture when relocating it after maintenance.

[0024] However, because the drain pan 16 is made of a foam material, it is difficult to fix it in a predetermined position using screws. Furthermore, because the drain pan 16 is relatively lightweight, it is necessary to ensure that its position does not change due to vibrations, etc. On the other hand, if the structure for fixing the drain pan 16 becomes complicated, there is a problem that maintenance becomes difficult. Therefore, in this embodiment, as described below, the drain pan 16 is easily attached and detached, and can be easily repositioned in an appropriate position, thereby improving maintenance.

[0025] As shown in FIG. 4(a), a first restricting member 20 is provided at a position corresponding to the corner of the left rear end of the drain pan 16. This first restricting member 20 is fixed to a partition wall 21 that separates the air supply passage and the exhaust passage shown in FIG. 2. Therefore, as also shown in FIG. 3(b), the drain pan 16 is restricted from moving upward at the corner of the left rear end and toward the rear end opposite the water conveyance drain pan 17. Furthermore, the partition wall 21 restricts the drain pan 16 from moving leftward within the housing 4.

[0026] A second restricting member 22 is provided in front of the drain pan 16. The second restricting member 22 has an L-shaped cross section, one side of which is fixed to the bottom surface of the housing 4, and the other side of which extends in the left-right direction within the housing 4 along the front wall of the drain pan 16. This restricts the movement of the drain pan 16 forward, that is, toward the water conveying drain pan 17. Because the second restricting member 22 extends in the left-right direction within the housing 4, it also functions as a guide member when the drain pan 16 is attached to or detached from the housing 4. In other words, by moving the front wall of the drain pan 16 along the second restricting member 22, the drain pan 16 can be attached or detached while being guided in a manner that does not contact the first restricting member 20.

[0027] Furthermore, although the movement of the drain pan 16 for discharge is restricted in the front-to-back and left-to-right directions as described above, it is relatively lightweight and may be subject to vertical shaking due to vibration. Therefore, in this embodiment, as shown in Figures 3(b) and 4(a), the front end of the drain pan 16 for discharge is pressed downward by the bottom surface of the water conveyance drain pan 17. This allows the drain pan 16 to be fixed in an appropriate position and orientation with its movement restricted in the front-to-back, left-to-right, and up-to-down directions. Furthermore, the drain pan 16 is fixed in an appropriate position and orientation even when relocating it after maintenance.

[0028] As shown in FIGS. 1 and 2, a side panel 23 is provided on the right side of the housing 4, covering the entire right side of the drain pan 16 while exposing the drain outlet 16a. This side panel 23 is formed to be wider than the length in the front-to-rear direction and the height in the up-to-down direction of the drain pan 16. Therefore, as shown in FIG. 4(b), by removing the side panel 23 from the housing 4, an attachment / detachment opening 24 larger than the drain pan 16 is formed on the right side of the housing 4. This makes it possible to easily attach and detach the drain pan 16 to and from the housing 4 during maintenance, etc. However, the size of the side panel 23 is not limited to this, and may be any size that allows the drain pan 16 to be removed.

[0029] Incidentally, in order to press the water drain pan 16 against the discharge drain pan 16, the water drain pan 17 needs to be fixed in an appropriately positioned state. For this reason, as shown in Fig. 5, an installation metal plate 18 is provided below the water drain pan 17, and a water-side restricting member 25 is provided at a position corresponding to the corner on the left front end side to restrict upward movement and forward movement, which is the opposite side from the discharge drain pan 16. As a result, the water drain pan 17 is positioned at an appropriate height, and the positioning of the corner on the left front end side and upward and forward movement are restricted.

[0030] The water conveying drain pan 17 is fixed in place with the corner of its right rear end pressed downward by a pressing member 26. As shown in a partially enlarged side view, the pressing member 26 is bent at its lower end, and the bent portion presses the wall of the stepped portion 17b on the right rear end side of the water conveying drain pan 17 from above. The pressing member 26 is fixed to a support member 27 (see also FIG. 3 ) that is fixed to the housing 4. By providing such a pressing member 26, the water discharge drain pan 16 is fixed in place with the right rear end pressed downward and in contact with the water discharge drain pan 16, that is, with the pressing member 26 pressing the water discharge drain pan 16 downward.

[0031] Furthermore, as shown in Fig. 5, water conveying drain pan 17 has a screw hole 17a formed on the front end side of the right wall portion, and is indirectly fixed to water supply unit 15a using screw hole 17a. Specifically, as shown in Fig. 3, water supply unit 15a is provided above water conveying drain pan 17, and a fixing bracket 28 is attached to water supply unit 15a, which extends in an L-shape in plan view and extends to the inner surface of the right wall portion of water conveying drain pan 17, as shown in Fig. 5. Water conveying drain pan 17 is then screwed to fixing bracket 28 using screw hole 17a in the right wall portion.

[0032] In order to attach or detach the drain pan 16, it is necessary to release the downward pressure exerted by the drain pan 17. In this case, it is desirable to be able to release the pressure easily from the viewpoint of ease of maintenance. Therefore, in this embodiment, the pressure exerted by the pressure member 26 and the screw fastening to the fixing bracket 28 can be easily released.

[0033] Specifically, as shown in Fig. 1, an inspection panel 29 is provided on the side of the housing 4 located to the side of the water conveying drain pan 17. This inspection panel 29 closes the inspection opening 30 as shown in Fig. 6(a). The pressing member 26 is fixed to the support member 27 at a position where it can be accessed from this inspection opening 30.

[0034] 6(b), the water conveying drain pan 17 is fixed to the fixing bracket 28 at a position that allows access from the inspection opening 30. Therefore, by removing the inspection panel 29, the rear end side and right wall side of the water conveying drain pan 17 can be made free. In other words, by working through the inspection opening 30, the pressure on the water discharge drain pan 16 can be released.

[0035] In this way, by removing the inspection panel 29 to release the pressure on the drain pan 16 and removing the side panel 23 to expose the opening 24 for attachment and detachment as shown in Figure 4(b), the drain pan 16 can be easily removed from the housing 4. Furthermore, when cleaning the drain pan 16 and attaching it to the housing 4, the pressing member 26 can be fixed through the inspection opening 30 and screwed to the fixing bracket 28, so that the drain pan 16 can be fixed in a state where it is properly positioned and pressed downward by the water conveying drain pan 17.

[0036] According to the embodiment described above, the following effects can be obtained. The drain water drainage structure according to the embodiment comprises a drainage drain pan 16 having a drain outlet 16a for discharging drain water outside the housing 4, and a water-conducting drain pan 17 for guiding water discharged from the humidification unit 15 to the drainage drain pan 16, the water-conducting drain pan 17 being positioned higher than the drainage drain pan 16 and fixed with its bottom surface inclined towards the drainage drain pan 16 side, and the drainage drain pan 16 being placed on the bottom surface of the housing 4 and fixed in a state where it is pressed downward by the water-conducting drain pan 17.

[0037] By separating the water conveying drain pan 17 and the water discharge drain pan 16 in this way, the water conveying drain pan 17 can be made smaller. This makes it easier to remove the water discharge drain pan 16, facilitating maintenance.

[0038] Furthermore, by pressing the water conveying drain pan 17 against the water discharge drain pan 16, that is, by bringing the bottom surface of the water conveying drain pan 17 into contact with the water discharge drain pan 16, there is no gap between the water conveying drain pan 17 and the water discharge drain pan 16, but they are sealed together. This causes the air that has passed through the heat exchanger 14a to flow toward the humidifying element 15b, improving the humidifying capacity.

[0039] Additionally, the housing 4 is provided with an inspection opening 30 located to the side of the water conveying drain pan 17, and the water conveying drain pan 17 is fixed in a state in which the water discharge drain pan 16 side is pressed downward by a pressing member 26 provided in a position accessible from the inspection opening 30. This makes it possible to easily release the pressure from the water conveying drain pan 17.

[0040] Furthermore, the housing 4 is provided with an opening 24 for attachment / detachment located to the side of the drain pan 16 for discharge, and the drain pan 16 for discharge can be attached to and detached from the housing 4 through the opening 24 for attachment / detachment by loosening the fastening of the water-conducting drain pan 17. This allows the drain pan 16 to be easily attached and detached.

[0041] Furthermore, the same shape of drain pan 16 is used regardless of the size of the housing 4. This allows the drain pan 16, which is made of a foamed resin material and requires a mold, to be used in common for air treatment devices 1 of different sizes, thereby reducing manufacturing costs. Furthermore, by forming the water conveying drain pan 17 using sheet metal processing, it is possible to use one with a shape that matches the size of the air treatment device 1.

[0042] The same effect can also be obtained by an air treatment device 1 having the drain water drainage structure configured as described above.

[0043] (Second embodiment) In the second embodiment, a drainage structure for draining water outside the housing 4 will be mainly described. Note that the configuration of the air treatment device 1 is the same as that of the first embodiment, and therefore the description will be made with reference to Figure 1 and the like as appropriate. The configuration of the second embodiment can be applied to the configuration of the first embodiment.

[0044] As shown in Fig. 7(a), a drain-up device 13 is provided on the outside of the housing 4 of the air treatment device 1 via a mounting plate 12. As shown in Fig. 7(b), the drain-up device 13 includes a lower case 131 that is provided with an inlet 31 through which drain water discharged from a drain pan 16 flows in and that houses a pump (not shown), an upper case 133 that is fixed watertight to the top of the lower case 131 and is provided with a drain hose 132 that drains the drain water, and a fixing metal plate 134 that is provided on the housing 4 side of the upper case 133 and that fixes the drain-up device 13 to the mounting plate 12. The drain-up device 13 drives the pump based on instructions from a control circuit to discharge the drain water that has flowed into the lower case 131 into a drainage path (not shown).

[0045] The fixing sheet metal 134 has a plurality of screw holes 135 for fixing to the mounting plate 12. In this embodiment, three screw holes 135a, 135b, and 135c are provided. That is, the drain up device 13 is screwed to the mounting plate 12 at multiple locations via the fixing sheet metal 134. Of these, screw holes 135a and 135c are pot-shaped holes having a generally circular large-diameter portion and a small-diameter portion that extends upward from a portion of the circumference of the large-diameter portion. Therefore, by temporarily fastening screws to the mounting plate 12 in positions corresponding to screw holes 135a and 135c in advance, the drain up device 13 can be temporarily placed on the screws. Note that the number and arrangement of the screw holes 135 and the number of pot-shaped holes are merely examples and are not limited thereto.

[0046] Here, we will explain the problems with the conventional system. Conventionally, the drain-up device was installed inside the housing 4, but installing it inside the housing 4 required a large opening for maintenance, making it difficult to remove. Even if the device were to be removed, it would require removing multiple panels, which increased the amount of work required and reduced workability. Furthermore, installing the drain-up device inside the housing 4 would also obstruct the air passage, reducing air intake efficiency. Therefore, in this embodiment, the drain-up device 13 is attached to the outside of the housing 4 using the mounting plate 12.

[0047] As shown in FIG. 7(a), the mounting plate 12 is fixed to the housing 4 by being fastened together with the hanging hardware screws 33 that secure the hanging hardware 32 for suspending the air treatment device 1. The hanging hardware 32 is provided on each of the four corners of the side surface of the housing 4. Fastening together with the hanging hardware screws 33 eliminates the need for a separate structure for attaching the mounting plate 12. Also, as shown in FIG. 8(a), the mounting plate 12 has a pot-shaped screw hole 12a for attaching it to the housing 4. In this case, the large diameter portion of the screw hole 12a is formed to be large enough to allow the screw head of the hanging hardware screw 33 to be inserted. Therefore, the mounting plate 12 can be attached to and detached from the housing 4 without removing the hanging hardware screws 33.

[0048] 8(b), the cross section of the mounting location is shown schematically, and the hanging bracket 32 ​​is fixed between a screw-fastened metal plate 34 and a panel member 35 inside the housing 4. Therefore, even if the mounting plate 12 is fixed to the outside of the housing 4, the position of the hanging bracket 32 ​​does not change, and the mounting plate 12 does not affect the suspension of the air treatment device 1. Furthermore, because the screw-fastened metal plate 34 and the panel member 35 have a strong structure for suspending the air treatment device 1, they do not warp even when the drain up device 13 is attached, and the drain up device 13 can be attached securely and appropriately positioned.

[0049] The mounting plate 12 is provided with screw holes 12b that serve as mounting locations in multiple rows in the vertical direction in order to screw in drain up devices 13 of different types and shapes, and is also provided with a nameplate 12c that indicates which screw hole 12b corresponds to which type of drain up device 13. In other words, the mounting plate 12 is provided with marks for mounting different types of drain up devices 13 in a manner that indicates the respective mounting locations.

[0050] In this embodiment, the mounting plate 12 has four vertical rows of mounting locations, each consisting of a set of three screw holes 12b, allowing four types of drain up devices 13 to be mounted, namely, type A, type B, type C, and type D, from top to bottom. Note that the number of rows of screw holes 12b at the mounting locations and the display pattern of the nameplate 12c shown here are merely examples and are not intended to be limiting. Furthermore, because drain up devices 13 may have the same shape even if they are of different types, the nameplate 12c may serve as a mark that matches the shape.

[0051] By using such a mounting plate 12, the positional relationship between the drain outlet 16a and the drain up device 13 can be standardized. For example, as shown in FIG. 9(a), when a type A drain up device 13A is installed, the positional relationship between the inlet 31 and the drain outlet 16a is assumed to be L1 in the vertical direction and L2 in the front-to-back direction. By using the mounting plate 12, the positional relationship between the inlet 31 and the drain outlet 16a is assumed to be L1 in the vertical direction and L2 in the front-to-back direction when a type C drain up device 13C is installed, as shown in FIG. 9(b). In this manner, the mounting plate 12 enables the drainage path to be formed using common components regardless of the type of drain up device 13. Note that, for clarity, the illustration of the hanging bracket 32 ​​and the like is omitted in FIG. 9. In this embodiment, L1 and L2 were common regardless of the type of drain up device 13. However, by using the mounting plate 12, it is sufficient that at least L1 is common.

[0052] According to the embodiment described above, the following effects can be obtained. The drain water discharge structure according to this embodiment includes a drain lift device 13 for discharging drain water discharged from a drain pan 16 to the outside of the housing 4 into a drainage path, and a mounting plate 12 for attaching the drain lift device 13 to the housing 4, and the mounting plate 12 is fixed to the housing 4 by being fastened together with a hanging hardware screw 33 that fastens a hanging hardware 32 that suspends the housing 4. This eliminates the need for a dedicated mounting structure for fixing the mounting plate 12. Furthermore, the mounting plate 12 can be fixed firmly and in an appropriately positioned state.

[0053] Furthermore, the mounting plate 12 is attached to the housing 4 with a pot-shaped hole that allows the hanging hardware screws 33 to be fixed without removing them from the housing 4. This allows the mounting plate 12 to be fixed without removing the hanging hardware screws 33, preventing mistakes such as dropping and losing the screws during work and improving workability.

[0054] The drain up device 13 is screwed to the mounting plate 12 at multiple mounting locations via a fixing metal plate 134, at least one of which has a pot hole. This allows the drain up device 13 to be temporarily hung on the screws during maintenance and other servicing, improving workability.

[0055] Furthermore, the mounting plate 12 is provided with multiple mounting locations in the vertical direction in order to mount different types or shapes of drain up devices 13. This allows different types and shapes of drain up devices 13 to be mounted using a common mounting plate 12, thereby improving versatility.

[0056] Furthermore, the mounting plate 12 has marks at each mounting location for mounting different types or shapes of drain up devices 13. This makes it possible to clearly and accurately indicate the mounting position for products of different heights, improving mounting accuracy and reducing the risk of mounting in the wrong position during assembly or maintenance.

[0057] (Third embodiment) In the third embodiment, a drainage structure for draining drain water between the drain outlet 16a and the drain-up device 13 will be described. Note that the configuration of the air treatment device 1 has some commonalities with the first and second embodiments, so reference will be made to Figure 1 and other figures as appropriate. The configuration of the third embodiment can be applied to the configurations of the first and second embodiments.

[0058] As shown in Figures 1 and 7(a), the air treatment device 1 is equipped with a flexible hose 10 that guides drain water discharged from a drain pan 16 to a drain-up device 13. In the case of Figure 7(a), the air treatment device 1 further includes an extension hose 11 on the side of the flexible hose 10 facing the drain-up device 13. The flexible hose 10 and extension hose 11 constitute the drain water drainage structure of this embodiment. Note that the drain water drainage structure may also be composed of only the flexible hose 10, as shown in Figure 12, which will be described later.

[0059] Here, we will explain the conventional problems. Conventionally, a drainage channel for drain water has been formed using a hose with a so-called accordion structure. In this case, although the degree of freedom in arranging the drainage channel is increased, bending the hose places a load on it, increasing the risk of water leakage and damage. Therefore, in this embodiment, the risk of water leakage and damage in the drainage channel is reduced in a configuration in which a drain-up device 13 is provided on the side of the air treatment device 1 as follows.

[0060] 10(a), the flexible hose 10 has a first connection part 101, a second connection part 102, and a heat-insulating pipe part 103 that connects the first connection part 101 and the second connection part 102. The first connection part 101 is bent 45 degrees upward in the figure with respect to the center line (CL1) of the heat-insulating pipe part 103, and is connected so that the center line (CL2) on the opening side is at the center of the drain outlet 16a of the drain pan 16 for drainage.

[0061] The second connecting portion 102 is bent 45 degrees upward in the figure with respect to the center line (CL1) of the heat-insulating pipe portion 103, and is connected so that the center line (CL3) on the opening side is at the center of the inlet 31 of the drain-up device 13. Therefore, the flexible hose 10 connects the drain outlet 16a and the inlet 31 with the first connecting portion 101 and the second connecting portion 102 bent 90 degrees from each other.

[0062] The above-mentioned 45 degrees and 90 degrees are reference angles and may include slight deviations. Also, the first connecting portion 101 and the second connecting portion 102 may be slightly twisted around the center line (CL1) of the thermally insulated pipe portion 103.

[0063] The heat-insulated pipe section 103 has a hose section 103a that connects the first connection section 101 and the second connection section 102, and a cover section 103b that covers the outside of the hose section 103a. Both the hose section 103a and the cover section 103b are flexible. Therefore, the flexible hose 10 is expandable and contractible along the center line (CL1) as shown in Figures 10(b) and 10(c).

[0064] A drainage path is formed between the drain outlet 16a and the drain-up device 13 using a flexible hose 10 configured as described above. For example, as shown in a simplified state in FIG. 11(a), when the drain-up device 13 is attached to the air processing device 1, the drain outlet 16a opens to the right of the housing 4 (downward in the figure), and the inlet 31 opens to the rear of the drain-up device 13 (leftward in the figure). In this case, the center line (CL10) of the drain outlet 16a and the center line (CL11) of the inlet 31 intersect each other at 90 degrees, so the drainage path needs to be bent 90 degrees.

[0065] However, since bending the heat-insulating pipe portion 103 increases the risk of breakage, etc., as described above, in this embodiment, the heat-insulating pipe portion 103 is used without bending it. Specifically, when the distance (L10) from the center of the drain outlet 16a of the drain pan 16 to the drain-up device 13 is greater than the distance (L11) from the inlet 31 of the drain-up device 13 to the housing 4 in a plan view of the air processing device 1 from above, an extension hose 11 is provided between the second connection portion 102 and the inlet 31.

[0066] 11(b), the extension hose 11 extends between the second connection part 102 and the drain-up device 13, ensuring a drainage path for drain water from the drain outlet 16a to the drain-up device 13. In addition, by providing the extension hose 11, the drainage path can be formed without bending the insulated pipe part 103.

[0067] Alternatively, as shown in a simplified state in Figure 12(a), when the drain up device 13 is attached to an air processing device 1A that does not include a heat exchange unit 14 and has a relatively short length in the front-to-rear direction, it is expected that the distance (L20) from the center of the drain outlet 16a to the drain up device 13 will be approximately the same as the distance (L21) from the inlet 31 to the housing 4. Therefore, if the two distances are approximately the same, the flexible hose 10 alone can connect the drain outlet 16a and the inlet 31, as shown in Figure 12(b). In this case, as long as the insulated pipe portion 103 is within the stretchable range as shown in Figures 10(b) and 10(c), the flexible hose 10 alone can form a drainage channel even if the absolute value of the distance changes.

[0068] According to the embodiment described above, the following effects can be obtained. The drain water drainage structure according to the embodiment includes a flexible hose 10 that leads drain water discharged from a drain pan 16 to a drain up device 13 that discharges the drain water into a drainage path, and the flexible hose 10 has a first connection portion 101 that is connected to the drain outlet 16a of the drain pan 16 and is bent 45 degrees relative to the drain outlet 16a, a second connection portion 102 that is connected to the inlet 31 of the drain up device 13 and is bent 45 degrees relative to the inlet 31, and an insulated pipe portion 103 that connects between the first connection portion 101 and the second connection portion 102, and the first connection portion 101 and the second connection portion 102 are bent 90 degrees.

[0069] This allows a drainage path for drain water to be formed without bending the flexible hose 10 in a configuration in which the direction of the drain outlet 16a and the direction of the inlet 31 intersect at 90 degrees when the drain up device 13 is installed in the air treatment device 1.

[0070] Furthermore, when the distance from the center of the drain outlet 16a of the drain pan 16 to the drain up device 13 is equal to the distance from the inlet 31 of the drain up device 13 to the housing 4 in a plan view of the air processing device 1 seen from above, the flexible hose 10 connects the drain outlet 16a of the drain pan 16 to the inlet 31 of the drain up device 13 by extending or contracting the insulated pipe section 103. As a result, by extending or contracting the flexible hose 10 to an appropriate length, a drainage path for drain water can be formed even if the absolute value of the distance between the air processing device 1 and the drain up device 13 changes.

[0071] Furthermore, when the distance from the center of the drain outlet 16a of the drain pan 16 to the drain up device 13 in a plan view of the air treatment device 1 seen from above is greater than the distance from the inlet 31 of the drain up device 13 to the housing 4, the extension hose 11 of the flexible hose 10 is connected between the second connection part 102 and the inlet 31 of the drain up device 13. This makes it possible to form a drainage path for drain water even when the housing 4 is large and the distance from the drain outlet 16a to the drain up device 13 is long.

[0072] Although the embodiments of the present invention have been described above, these embodiments are presented merely as examples and are not intended to limit the scope of the invention. These novel embodiments can be embodied in various other forms, and various omissions, substitutions, modifications, etc. can be made without departing from the spirit of the invention. The present embodiments and their modifications are included within the scope and spirit of the invention, and are also included in the inventions described in the claims and their equivalents. [Explanation of symbols]

[0073] In the drawings, 1 and 1A indicate air treatment devices, 4 indicates a housing, 10 indicates a flexible hose, 11 indicates an extension hose, 12 indicates a mounting plate, 12c indicates a nameplate, 13, 13A, and 13C indicate drain-up devices, 15 indicates a humidification unit, 16 indicates a drain pan for drainage, 16a indicates a drain outlet, 17 indicates a drain pan for water conveyance, 20 indicates a first regulating member, 22 indicates a second regulating member, 24 indicates an opening for attachment / detachment, 25 indicates a water conveyance side regulating member, 26 indicates a pressing member, 30 indicates an opening for inspection, 31 indicates an inlet, 32 indicates a hanging bracket, 33 indicates a screw for the hanging bracket, 101 indicates a first connecting part, 102 indicates a second connecting part, 103 indicates an insulated pipe part, and 134 indicates a fixing sheet metal.

Claims

1. a drain pan provided with a drain outlet for discharging drain water to the outside of the housing; a water-conducting drain pan that guides water discharged from the humidifying unit to the drain pan; The water conveying drain pan is disposed above the water discharge drain pan, and is fixed with its bottom surface inclined toward the water discharge drain pan, The drain pan for drainage is placed on the bottom surface of the housing and is fixed in a state where it is pressed downward by the drain pan for water conveyance.

2. The housing is provided with an inspection opening located to the side of the water conveying drain pan, 2. The drain water drainage structure of claim 1, wherein the water conveying drain pan is fixed in a state in which it presses against the water discharge drain pan by a pressing member provided in a position accessible from the inspection opening.

3. The housing is provided with an attachment / detachment opening located on a side of the drain pan for drainage, 2. The drainage structure for an air treatment device according to claim 1, wherein the drain pan for water discharge is detachable from the housing through the detachment opening by loosening the fixing of the water-conducting drain pan.

4. 2. The drainage structure for an air treatment device according to claim 1, wherein the drain pan for drainage has the same shape regardless of the size of the housing.

5. a drain-up device for discharging drain water discharged from the drain pan to the outside of the housing into a drain path; a mounting plate for mounting the drain-up device to the housing, 2. The drainage structure for an air treatment device according to claim 1, wherein the mounting plate is fixed to the housing by being fastened together with a screw for a hanging hardware that fixes a hanging hardware for suspending the housing.

6. 6. The drainage structure for an air treatment device according to claim 5, wherein the mounting plate is attached to the housing in the form of a round hole that allows the hanging metal fitting screw to be fixed without removing it from the housing.

7. The drain-up device is fixed to the mounting plate at a plurality of locations by screws via fixing metal plates, 6. The drainage structure for an air treatment device according to claim 5, wherein at least one of said fixing metal plates has a pothole.

8. 6. The drain water drainage structure for an air treatment device according to claim 5, wherein the mounting plate is provided with a plurality of mounting positions in the vertical direction in order to mount drain up devices of different types or different shapes.

9. 9. The drain water drainage structure for an air treatment device according to claim 8, wherein said mounting plate has marks at respective mounting locations for mounting said drain up devices of different types or different shapes.

10. A flexible hose is provided to lead the drain water discharged from the drain pan to a drainage path. The flexible hose has a first connection portion that is connected to the drain outlet of the drain pan and is bent 45 degrees relative to the drain outlet, a second connection portion that is connected to the inlet of the drain up device and is bent 45 degrees relative to the inlet, and an insulated pipe portion that connects between the first connection portion and the second connection portion, and the first connection portion and the second connection portion are bent 90 degrees.This is a drain water drainage structure for an air treatment device as described in claim 1.

11. The drain water drainage structure of an air treatment device as described in claim 10, wherein the flexible hose connects the drain outlet of the drain pan for drainage and the inlet of the drain up device by expanding and contracting the insulated pipe section when the distance from the center of the drain outlet of the drain pan for drainage to the drain up device and the distance from the inlet of the drain up device to the housing are equal in a plan view of the air treatment device from above.

12. The drain water drainage structure of an air treatment device as described in claim 10, wherein an extension hose is connected between the second connection part and the inlet of the drain up device when, in a plan view of the air treatment device from above, the distance from the center of the drain outlet of the drain pan for drainage to the drain up device is greater than the distance from the inlet of the drain up device to the housing.

13. An air treatment device comprising the drain water drainage structure according to any one of claims 1 to 12.

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