TWI727375B - dehumidifier - Google Patents

Abstract

[Problem] To provide a dehumidifier with a simple and space-saving structure that prevents water from flowing out of the drainage channel when the drainage channel is taken out and transported. [Technical Solution] The dehumidifier 1 includes a dehumidifier 3 that removes moisture in the air, and a drain tank 5 that stores liquid water discharged from the dehumidifier 3. The drainage tank 5 includes a water receiving portion (small cover 18) having a first opening 18a as an entrance for water to enter the interior of the drainage tank 5, and a water surface disposed inside the drainage tank 5 and when it is fuller than the drainage tank 5 (Full water position 201) The non-return plate 19 at a high position and facing the first opening 18a.

Description

dehumidifier

The invention relates to a dehumidifier.

Fig. 6 is an exploded perspective view of the drain groove included in the dehumidifier disclosed in Japanese Patent No. 4347493. As shown in FIG. 6, the upper surface opening 101 of the drain groove 100 is covered by a large groove cover 102 and a small groove cover 103 that is detachable from the large groove cover 102. The drainage system enters the drainage groove 100 through the inflow port 104 provided in the small groove cover 103.

Fig. 7 is a cross-sectional view of a drain groove included in the dehumidifier disclosed in Japanese Patent Application Laid-Open No. 2000-266360. As shown in FIG. 7, the opening 105 for recovery of the drain of the drain tank 100 includes a check valve 106 that is normally closed. With this check valve 106, it is possible to prevent water leakage when the dehumidifier is overturned, and water splashing due to shaking when the drain tank 100 is transported. During the dehumidification operation, when the drain tank 100 is stored in an appropriate position, the check valve 106 is opened by pushing the water conduit 107 connected to the drain pan to open the drain tank 100, and the drain can be injected into the drain tank 100. [Prior Technical Literature]

[Patent Document 1] Japanese Patent No. 4344493 [Patent Document 2] JP 2000-266360 A

[The problem to be solved by the invention]

In the conventional technology shown in FIG. 6, although the entire upper surface of the drain groove 100 is covered by the large tank cover 102 and the small tank cover 103 to prevent water from splashing out, the hole of the inflow port 104 is usually open. reason. When the drainage tank 100 is transported, due to shaking, water may flow out of the hole of the inflow port 104 and wet the floor.

In the conventional technology shown in FIG. 7, when the drain groove 100 is stored in a position deviated from the proper position, a gap may occur in the fitting portion between the water pipe 107 and the check valve 106, and the drain may leak. In addition, there is a problem of complicated structure and high cost. In addition, since a space for arranging a mechanism for opening and closing the check valve 106 is required above the drain tank 100, there is a problem that the space for the capacity of the drain tank 100 must be reduced.

The present invention was made to solve the above-mentioned problems, and its object is to provide a dehumidifier with a simple and space-saving structure that can prevent water from flowing out of the drain tank when the drain tank is taken out or transported. [Technical means to solve the problem]

The dehumidifier of the present invention includes a dehumidifier that removes moisture in the air, and a drainage tank that stores liquid water discharged from the dehumidifier. The drainage groove system includes a water receiving portion having a first opening as an inlet for water to enter the interior of the drainage groove, and a water receiving portion disposed inside the drainage groove and facing the first opening at a position higher than the water surface when the drainage groove is full Check plate. [Effects of the invention]

According to the present invention, with a simple and space-saving structure, it is possible to prevent water from flowing out of the drainage channel when the drainage channel is taken out or transported.

Hereinafter, embodiments will be described with reference to the drawings. Common or corresponding elements in each figure are denoted by the same symbols to simplify or omit repetitive descriptions.

The first embodiment Fig. 1 is a cross-sectional side view showing the dehumidifier according to the first embodiment. The dehumidifier 1 of this embodiment is used in a state of being placed on the floor surface 200. In the following description, it is assumed that the dehumidifier 1 is placed on a horizontal floor surface 200, and the orientation and positional relationship of each part are designated. The left side of the drawing in FIG. 1 corresponds to the front of the dehumidifier 1, and the right side of the drawing in FIG. 1 corresponds to the back of the dehumidifier 1.

As shown in FIG. 1, the dehumidifier 1 of this embodiment includes a main body case 2, a dehumidification device 3, a fan unit 4, and a drain groove 5. The main body case 2 is a structure corresponding to the skeleton of the dehumidifier 1. The dehumidification device 3, the fan unit 4, and the drain groove 5 are housed inside the main body case 2. A plurality of wheels 10 in contact with the floor surface 200 are provided at the bottom of the body shell 2. When the dehumidifier 1 is moved to other positions on the floor surface 200, the dehumidifier 1 can be easily moved by rotating the wheels 10. Although the main body case 2 of the illustrated example has the shape of a rectangular parallelepiped, the shape of the main body case 2 is not limited to a rectangular parallelepiped.

The air inlet 6 and the air outlet 7 are formed in the body shell 2. In the example shown in the figure, the air inlet 6 is opened on the back of the main body shell 2, and the air outlet 7 is opened on the upper surface of the main body shell 2. The air passage 12 is formed in the body shell 2. The air passage 12 is a space that serves as a passage for flowing air from the air inlet 6 to the air outlet 7.

The fan unit 4 includes a sirocco fan 8, a motor 9 that rotates the sirocco fan 8, and a fan case 11 that houses the sirocco fan 8 and the motor 9. The sirocco fan 8 is arranged in the air duct 12. When the sirocco fan 8 rotates, the air flowing in from the air inlet 6 into the main body casing 2 passes through the air passage 12 and then flows out from the air outlet 7 to the outside of the main body casing 2 to generate airflow. The fan unit 4 is an example of an air blowing device.

The dehumidification device 3 includes a refrigerant circuit. This refrigerant circuit has an evaporator 13, a condenser 14, a compressor 15, and a refrigerant pipe (not shown in the figure) that connects these in a loop. The dehumidifier 3 of this embodiment removes moisture in the air by operating a refrigeration cycle using a refrigerant circuit. The evaporator 13 and the condenser 14 are arranged in the air passage 12. The evaporator 13 and the condenser 14 correspond to a heat exchanger that exchanges heat between the air passing through the air passage 12 and the refrigerant. In the example shown in the figure, the condenser 14 is arranged upstream of the airflow with respect to the sirocco fan 8, and the evaporator 13 is arranged upstream of the airflow with respect to the condenser 14. The air flowing into the air passage 12 from the air inlet 6 is first cooled by the evaporator 13. As a result, the moisture in the air condenses and condenses on the surface of the evaporator 13. The water system of the liquid condensed on the surface of the evaporator 13 flows downward by gravity. Therefore, the dehumidifier 3 discharges the moisture removed from the air as liquid water. The evaporator 13 evaporates the refrigerant by absorbing the heat of the air into the low-pressure refrigerant. The evaporated refrigerant flows into the compressor 15. The high-pressure refrigerant compressed by the compressor 15 flows into the condenser 14. The condenser 14 heats the air flowing in from the evaporator 13 by the heat of the high-pressure refrigerant. The high-pressure refrigerant system cooled while passing through the condenser 14 flows into the evaporator 13 after being decompressed by a decompression device (not shown).

The dehumidification device 3 is not limited to the refrigerating cycle system as described above, and it is of course possible to use other systems. For example, the dehumidification device 3 may be a desiccant type device. The dehumidifier 3 in the case of the desiccant method includes an adsorbent that adsorbs moisture in the air, a heater, and a heat exchanger. The moisture absorbed by the adsorbent is heated by this heater. The moisture heated by this heater is cooled and condensed by this heat exchanger.

In the following description, the liquid water discharged from the dehumidifier 3 may be referred to as "drainage." The drainage channel 5 stores drainage. The drain groove 5 of this embodiment has a box-shaped appearance as a whole. The drainage groove 5 includes a groove body 16, a large cover 17, a small cover 18 and a non-return plate 19. The tank main body 16 corresponds to the main body of the drainage tank 5. The tank body 16 is a container having an opening on the upper surface. The large cover 17 is a cover that closes the opening on the upper surface of the tank body 16. The large cover 17 corresponds to the upper surface portion formed by the upper surface of the drain groove 5. The large cover 17 has a size that covers the entire opening of the upper surface of the tank body 16. The small cover 18 is attached to the large cover 17. The small cover 18 has a first opening 18a. The first opening 18a corresponds to an inlet through which water enters the drain groove 5. The check plate 19 is arranged inside the drain groove 5.

The drain pan 20 is arranged inside the main body case 2. The drain pan 20 is arranged below the evaporator 13 and the condenser 14. The drain pan 20 covers the evaporator 13 and the condenser 14 from below. The drain pan 20 receives the drain water condensed in the evaporator 13 and dropped from the evaporator 13. The water guiding pipe 20 a is formed in the drain pan 20. The water guiding pipe 20a is a passage of water penetrating from the upper surface of the drain pan 20 to the lower surface. The upper surface of the drain pan 20 is inclined with respect to the horizontal plane so as to descend toward the water guiding pipe 20a. The drainage system falling on the upper surface of the drainage pan 20 is inclined along this and collected in the water guiding pipe 20a.

The drainage groove 5 is arranged in the drainage groove storage chamber 21 formed inside the main body case 2. In this embodiment, the space below the fan unit 4, the evaporator 13, the condenser 14 and the drain pan 20 corresponds to the drain groove storage chamber 21. The drainage groove 5 is removable from the drainage groove storage chamber 21 to the outside of the main body casing 2. In this embodiment, the drainage groove 5 can be taken out from the drainage groove storage chamber 21 by pulling out the drainage groove 5 to the left of the first drawing with respect to the main body casing 2.

The small cover 18 includes a receiving vessel 18b for receiving drainage. The small cover 18 is equivalent to a water receiving part that receives drainage. The first opening 18a is formed in the central part of the receiving vessel 18b. The upper surface of the receiving vessel 18b is inclined with respect to the horizontal plane in a manner of descending toward the first opening 18a. As shown in FIG. 1, in a state where the drain tank 5 is arranged in an appropriate position in the drain tank storage chamber 21, the water guiding pipe 20a of the drain pan 20 is located above the receiving vessel 18b. The drain system received by the drain pan 20 drops down to the receiving vessel 18b through the water guiding pipe 20a. The drainage falling to the receiving vessel 18b is collected in the first opening 18a along the inclination of the upper surface of the receiving vessel 18b, and enters the drain groove 5 through the first opening 18a. The receiving vessel 18b is set to be larger than the water guiding pipe 20a so as to cover the water guiding pipe 20a and the surrounding area when viewed from the vertical direction. Thereby, even if the position of the drain groove 5 is slightly shifted, the receiving vessel 18b can reliably collect the drain water falling from the water pipe 20a. Furthermore, in the embodiment of the present invention, although the small cover 18 is used as the water receiving part, the small cover 18 is not provided and the water receiving part and the large cover 17 may be integrated.

The full water position 201 in FIG. 1 indicates the position of the water surface when the drain tank 5 is full of water. The dehumidifier 1 includes a full water sensor (not shown) as a water level sensor that can detect that the water level in the drain tank 5 has reached the full water position 201.

In the vicinity of the air outlet 7, a louver 22 for adjusting the direction of the air flow blown from the air outlet 7 to the outside of the main body case 2 is provided.

Next, the dehumidification operation of the dehumidifier 1 will be described. During the dehumidification operation, it is as follows. The dehumidifier 3 and the fan unit 4 operate. The air sucked into the air passage 12 from the air inlet 6 passes through the evaporator 13, the condenser 14 and the sirocco fan 8 in sequence, and then blows out from the air outlet 7 to the outside of the main body casing 2. The refrigerant compressed by the compressor 15 is vaporized by the evaporator 13 and absorbs surrounding heat. As a result, the evaporator 13 is cooled to a low temperature. The low-temperature evaporator 13 condenses the moisture in the air sucked into the air passage 12. The air system cooled and dehumidified when passing through the evaporator 13 is heated by the condenser 14 to return to normal temperature, and then is discharged to the outside of the dehumidifier 1.

During the dehumidification operation, drain water gradually accumulates in the drain groove 5. When the full water sensor detects that the drain tank 5 is full of water, the control device (not shown) included in the dehumidifier 1 stops the dehumidification operation. Preferably, the dehumidifier 1 includes a notification device for notifying the user when the drain tank 5 is full of water. This notification device may be, for example, a buzzer (not shown in the figure) or a lamp (not shown in the figure).

The user takes out the drain tank 5 filled with water from the drain tank storage chamber 21, and while holding the drain tank 5, moves to a washbasin or the like to drain the drain in the drain tank 5. The drain tank 5 in a full water state has a weight of, for example, about 5 kg. When the drain tank 5 with such a weight is taken out from the drain tank storage chamber 21 or transported, the drain tank 5 may be shaken due to the unstable state. When the drainage groove 5 shakes, the water surface in the drainage groove 5 fluctuates or water splashes.

Fig. 2 is a cross-sectional side view of the drain groove 5 included in the dehumidifier 1 according to the first embodiment. This second drawing corresponds to an enlarged view of the drain groove 5 in the first drawing. As shown in FIG. 2, the tank main body 16 includes a side wall part 16 a formed by the side wall of the drain tank 5 and a bottom wall part 16 b formed by the bottom of the drain tank 5. The side wall portion 16a is substantially parallel to the vertical line. The bottom wall portion 16b is substantially parallel to the horizontal plane. The upper end portion of the side wall portion 16a forms the edge portion of the upper surface opening portion of the tank main body 16. The entire opening of the upper surface of the tank body 16 is covered by a large cover 17 and a small cover 18.

The check plate 19 is a plate-shaped member arranged at a position facing the first opening 18a. The check plate 19 is arranged at a position higher than the full water position 201. In other words, the entire check plate 19 is located above the full water position 201. The check plate 19 covers the first opening 18a from below. In this embodiment, by including the check plate 19, the following effects can be obtained. When the drain tank 5 filled with water is taken out or transported, if the water surface in the drain tank 5 fluctuates or water splashes, the non-return plate 19 can reliably prevent the drain from contacting the first opening 18a. As a result, since it is possible to reliably suppress the discharge of drain water from the first opening 18a to the outside of the drain groove 5, it is possible to reliably prevent the floor or the like from being wetted. In addition, the above-mentioned effects can be achieved by the non-return plate 19 having no valve mechanism, low cost, and simple structure. On the other hand, as in the conventional technique shown in FIG. 7, it is assumed that a check valve mechanism is provided at the entrance of the drain groove 5, and when the drain groove 5 is arranged deviated from the proper position in the drain groove storage chamber 21, This check valve mechanism may not be able to open. If this check valve mechanism is not opened, the drain water discharged from the dehumidifier 3 cannot flow into the drain groove 5, so the drain leaks out of the dehumidifier 1. In contrast, in this embodiment, the occurrence of such water leakage can be reliably suppressed.

The full water position 201 is located at a position lower than the position of the upper end 16c of the inner surface of the side wall portion 16a. That is, a space 202 is formed between the water surface in the drain tank 5 and the lower surface of the large cover 17 in the full water state. The full water position 201 is a position relative to the upper end 16c of the inner surface of the side wall portion 16a, and may be, for example, a position about several centimeters below. In this embodiment, the depth of the drainage groove 5 has a margin, that is, by forming the above-mentioned space 202, the following effects can be obtained. After the full water sensor detects that the drain tank 5 is full with water and stops the dehumidification operation, the drain water adhering to the evaporator 13 may gradually flow down and fall to the receiving vessel 18b. Therefore, after the water level in the drain tank 5 reaches the full water position 201 and the dehumidification operation is stopped, the drain water may further flow into the drain tank 5. Since the depth of the drain groove 5 has a margin, it is possible to reliably accommodate the additional drain that flows in after the dehumidification operation is stopped. In addition, when the drain tank 5 is taken out or transported, even if the water surface in the drain tank 5 fluctuates slightly, the drain does not easily come into contact with the lower surface of the large cover 17.

The check plate 19 is arranged at a position lower than the upper end 16c of the inner surface of the side wall portion 16a. That is, the non-return plate 19 is arranged in the space 202, and the entire non-return plate 19 is located at a position lower than the position of the upper end 16c of the inner surface of the side wall portion 16a. In this embodiment, the non-return plate 19 can be arranged by utilizing the space of the space 202. Therefore, the non-return plate 19 can be provided without reducing the amount of water that can be accommodated in the drain groove 5

The first opening 18a is a cylindrical channel along a vertical line. The axial direction of the first opening 18a is parallel to the vertical line. The upper surface 19a of the check plate 19 faces the first opening 18a. When viewed from the vertical direction, it is preferable that the position of the center of the non-return plate 19 coincides with the position of the center of the first opening 18a.

It is preferable that the area of the pattern projected on the non-return plate 19 with respect to the horizontal plane is larger than the opening area of the first opening 18a. With this, the check plate 19 can more reliably prevent the discharge of drain water from the first opening 18a.

When viewed from a vertical direction, the entire first opening 18a is preferably located inside the outer edge 19b of the non-return plate 19. With this, the check plate 19 can more reliably prevent the discharge of drain water from the first opening 18a.

The drainage system entering the drainage groove 5 through the first opening 18 a drops to the upper surface 19 a of the check plate 19. This drainage system flows along the upper surface 19a of the non-return plate 19, and falls from the outer edge 19b to the water surface in the drainage groove 5.

At least a part of the upper surface 19a of the non-return plate 19 in this embodiment is inclined with respect to the horizontal plane so as to descend from the center portion of the upper surface 19a to the outside. Thereby, the drainage system falling to the upper surface 19a of the non-return plate 19 does not accumulate on the non-return plate 19, but can flow and fall from the non-return plate 19 smoothly. As a modified example, the entire upper surface 19a of the non-return plate 19 may be parallel to the horizontal plane. Even in that case, effects similar to those described above can be obtained.

The drainage groove 5 of this embodiment includes a connecting portion 23 connecting the non-return plate 19 and the small cover 18. The check plate 19 is fixed to the small cover 18 via the connecting portion 23. In this embodiment, by including the connecting portion 23, the following effects can be obtained. Since the small cover 18 can support the non-return plate 19, there is no need to provide a member for supporting the non-return plate 19 in the groove body 16. This result contributes to the simplification and weight reduction of the structure.

The connecting portion 23 in this embodiment protrudes upward from the upper surface 19a of the non-return plate 19. The connecting portion 23 is formed as an integral member with the non-return plate 19. As a result, the number of components can be reduced, which is beneficial to reduce costs. As a modified example, the connecting portion 23 and the non-return plate 19 may be different members, and the connecting portion 23 and the small cover 18 may be formed as an integral member.

The drainage groove 5 of this embodiment includes water passing holes 23a and 23b at positions between the small cover 18 and the non-return plate 19. The drainage system entering the drain groove 5 through the first opening 18a can pass through the water passing holes 23a and 23b. The water passage holes 23a and 23b are formed in the connection part 23. The water passage holes 23a and 23b open in a direction perpendicular to the straight line passing through the center of the first opening 18a. That is, the water passing holes 23a and 23b are opened in the horizontal direction. The drainage system falling from the first opening 18a to the upper surface 19a of the non-return plate 19 flows to the outer edge 19b of the non-return plate 19 through the water-passing holes 23a and 23b, and then drops to the water surface in the drainage groove 5.

In this embodiment, the following effects can be obtained by providing the water passing holes 23a and 23b. When water sloshing occurs in the drain tank 5 when the drain tank 5 is taken out or transported, the first opening 18a cannot be reached if the drain system does not pass through the water passing holes 23a and 23b. Therefore, it is possible to more reliably prevent the discharge of drain water from the first opening 18a.

In this embodiment, a pair of water passing holes 23a and 23b are provided. The pair of water passing holes 23a and 23b are formed at positions facing each other with a straight line passing through the center of the first opening 18a. It is not limited to the configuration shown in the drawings, and the drainage groove 5 may include only one water passage hole instead of a pair of water passage holes 23a and 23b, or may include three or more water passage holes.

The large cover 17 can be removed from the tank body 16. When the large cover 17 is installed on the tank main body 16, the large cover 17 can be fixed to the tank main body 16 by fitting the large cover 17 into the upper surface opening of the tank main body 16. For example, when cleaning the inside of the drain tank 5, by removing the large cover 17 from the tank body 16, the cleaning operation can be easily performed.

Fig. 3 is an exploded perspective view showing the small cover 18, the non-return plate 19, and the connecting portion 23 included in the drainage groove 5 shown in Figs. 1 and 2. FIG. 3 shows a state before the integrated member of the non-return plate 19 and the connecting portion 23 is attached to the small cover 18. As shown in Fig. 3, the non-return plate 19 in this embodiment has a circular outer shape when viewed from the vertical direction. The connecting portion 23 has a cylindrical shape concentric with the non-return plate 19. The outer diameter of the check plate 19 is larger than the outer diameter of the connecting portion 23. The water passage holes 23a and 23b are formed by removing a part of the cylindrical peripheral wall of the connecting portion 23. A pair of fitting holes 23c are formed in the connecting portion 23. Each fitting hole 23c penetrates the cylindrical peripheral wall of the connection part 23. As shown in FIG. The pair of fitting holes 23c are formed at positions different from the water passing holes 23a and 23b by 90 degrees with respect to the angle around the center line of the connecting portion 23.

Fig. 4 is an enlarged cross-sectional view of a part of Fig. 2. As shown in Fig. 4, the first opening 18a is formed by a cylindrical portion 18c protruding downward from the lower surface of the receiving vessel 18b. The outer diameter of the cylindrical portion 18c is equal to the inner diameter of the connecting portion 23. The cylindrical portion 18c is inserted into the inner side of the connecting portion 23 from the opening at the upper end of the connecting portion 23. The cylindrical part 18c has a claw part (illustration omitted) which protrudes from the outer peripheral surface. By fitting this claw into the fitting hole 23c of the connecting portion 23, the connecting portion 23 is fixed to the cylindrical portion 18c.

The flow system of the drain indicated by the arrow in FIG. 4 schematically shows an example of the movement of the drain when the water surface in the drain 5 undulates when the drain 5 is taken out or transported. When the shaking of the drain in the drain groove 5 becomes larger, the drain system undulates above the upper surface 19 a of the check plate 19. Therefore, it is assumed that the undulating drainage flows into the water passing hole 23a as indicated by the arrow in Fig. 4. There is a water passing hole 23b at a position facing the water passing hole 23a. Therefore, the drainage system flowing into the inside of the connecting portion 23 from the water passing hole 23a passes through the water passing hole 23b and flows out to the outside of the connecting portion 23 in this way. Conversely, when drainage flows into the inner side of the connection portion 23 from the water passage hole 23b, the drainage system flows out of the connection portion 23 through the water passage hole 23a. Therefore, in this embodiment, even if the drain water flows into the water passage hole 23a or the water passage hole 23b, it is possible to reliably suppress the drain water from flowing to the first opening 18a. As a result, it is possible to more reliably prevent the drainage from spraying out of the drainage groove 5 from the first opening 18a.

Fig. 5 is a perspective view of the drainage groove 5 shown in Fig. 1 and Fig. 2. Fig. 5 shows a state when the drain water in the drain tank 5 is drained. As shown in FIG. 5, the second opening 17 a is formed in a part of the large cover 17. The small cover 18 can be displaced when the second opening 17a is blocked and when the second opening 17a is not blocked. Fig. 1 and Fig. 2 show a state in which the second opening 17a is blocked by the small cover 18, that is, the state in which the small cover 18 is closed. Fig. 5 shows the state where the small cover 18 does not block the second opening 17a, that is, the state where the small cover 18 is opened.

In this embodiment, the small cover 18 is connected to the large cover 17 by a hinge portion 24. The small cover 18 can be displaced at a closed position where the second opening 17a is blocked and an open position where the second opening 17a is not blocked by rotating around the hinge portion 24 as the center. In this embodiment, by providing the hinge portion 24, the small cover 18 can be opened and closed easily. As a modified example, the hinge portion 24 may be omitted, and the small cover 18 may be configured to be detachable from the second opening 17a of the large cover 17.

When the drain in the drain tank 5 is poured, the small cover 18 is opened as shown in FIG. 5, and the drain can be discharged from the second opening 17a. In this embodiment, when draining the drain in the drain groove 5, the following effects can be obtained. Since there is no need to remove the large cover 17 from the tank body 16, the operation is simple. The second opening 17a formed in a part of the large cover 17 serves as a drain port for draining water. Since this drain port can be narrowed, the drained water does not spread and is easily poured on a washstand or the like.

In this embodiment, because the non-return plate 19 is mounted to the small cover 18 via the connecting portion 23, when the small cover 18 is opened, the non-return plate 19 and the connecting portion 23 are exposed to the outside of the drain groove 5. Therefore, when pouring water, the user can easily see foreign matter such as scale or dirt accumulated on the non-return plate 19 and the water through holes 23a, 23b. As a result, the user can easily perform maintenance such as cleaning the check plate 19 and the water passage holes 23a and 23b.

The axis system of the hinge portion 24 is a direction perpendicular to the surface of the drawing in FIG. 2. The straight line connecting the center of the water passage hole 23 a and the center of the water passage hole 23 b is perpendicular to the axis of the hinge portion 24. By rotating the small cover 18 with the hinge portion 24 as the center from the state of FIG. 2 and the small cover 18 is moved to the open position, the water passage hole 23a is downward and the water passage hole 23b is upward. In this embodiment, because the water-passing hole 23a is downward when the small cover 18 is opened, it can promote the water droplets or dust that slightly remain in the water-passing hole 23a due to surface tension, and naturally flow from the water-passing hole 23a. fall. As a result, the number of maintenance can be reduced. Moreover, the water droplets etc. which remain in the water-passing hole 23b also fall to the water-passing hole 23a by gravity, and are discharged to the outside through the water-passing hole 23a. Therefore, it is also possible to prevent water droplets and the like from remaining in the water passage hole 23b.

In this embodiment, although the small cover 18 and the large cover 17 are separately provided, and the first opening 18a, the receiving vessel 18b, and the non-return plate 19 are provided in the small cover 18, although the description is made, it is not limited to such a configuration, The structure corresponding to the first opening 18a, the receiving vessel 18b and the non-return plate 19 may also be directly provided on the large cover 17. Even in this case, it is possible to prevent drainage from spraying out from the first opening 18a when taking out or transporting the drainage tank 5, and obtain the same effect as the present embodiment.

1: Dehumidifier 2: body shell 3: Dehumidification device 4: Fan unit 5: Drainage channel 6: Air inlet 7: air outlet 8: Multi-blade fan 9: Motor 10: Wheel 11: Fan case 12: Air channel 13: Evaporator 14: Condenser 15: Compressor 16: slot body 16a: side wall 16b: bottom wall 16c: upper end 17: Big cover 17a: second opening 18: small cover 18a: first opening 18b: receiving vessel 18c: Cylinder 19: Check plate 19a: upper surface 19b: outer edge 20: Drain pan 20a: Water pipe 21: Drain storage room 22: Blinds 23: Connection part 23a, 23b: water hole 23c: Fitting hole 24: Hinge 100: drainage channel 101: Upper surface opening 102: large slot cover 103: small slot cover 104: Inlet 105: Recycling opening 106: check valve 107: Water pipe 200: Floor surface 201: Full water position 202: Space

Fig. 1 is a cross-sectional side view showing the dehumidifier according to the first embodiment. Figure 2 is a cross-sectional side view of the drain groove included in the dehumidifier according to the first embodiment. Fig. 3 is an exploded perspective view showing the small cover, the non-return plate, and the connecting portion included in the drainage groove shown in Figs. 1 and 2. Figure 4 is an enlarged cross-sectional view of a part of Figure 2. Figure 5 is a perspective view showing the drainage grooves in Figures 1 and 2. Figure 6 is an exploded perspective view of the drain groove included in the dehumidifier disclosed in Japanese Patent No. 4347493. Figure 7 is a cross-sectional view of the drain groove included in the dehumidifier disclosed in Japanese Patent Application Laid-Open No. 2000-266360.

1: Dehumidifier

2: body shell

3: Dehumidification device

4: Fan unit

5: Drainage channel

6: Air inlet

7: air outlet

8: Multi-blade fan

9: Motor

10: Wheel

11: Fan case

12: Air channel

13: Evaporator

14: Condenser

15: Compressor

16: slot body

16c: upper end

17: Big cover

18: small cover

18a: first opening

18b: receiving vessel

19: Check plate

20: Drain pan

20a: Water pipe

21: Drain storage room

22: Blinds

200: Floor surface

201: Full water position

Claims (10)

A dehumidifier, in a dehumidifier having a dehumidification device that removes moisture in the air, and a drainage tank that stores the water of the liquid discharged from the dehumidification device, the drainage tank includes: a water receiving part having a water supply The first opening of the inlet into which the interior of the aforementioned drainage groove enters; the non-return plate is arranged inside the aforementioned drainage groove at a position higher than the water surface when the aforementioned drainage groove is full of water, and faces the aforementioned first opening; wherein the aforementioned receiving water The portion includes a receiving vessel having an upper surface; the first opening is formed in the receiving vessel; the drainage drops from above to the upper surface of the receiving vessel, and is collected in the first opening along the upper surface of the receiving vessel, And enter the interior of the drain groove through the first opening. According to the dehumidifier described in the first item of the scope of patent application, the area of the pattern projected by the non-return plate relative to the horizontal plane is larger than the opening area of the first opening. The dehumidifier described in item 1 or item 2 of the scope of patent application, wherein the non-return plate is arranged lower than the upper end of the inner surface of the side wall of the drain groove. According to the dehumidifier described in item 1 or item 2 of the scope of the patent application, at least a part of the upper surface of the aforementioned non-return plate is inclined so as to descend from the central part toward the outside. For example, the dehumidifier described in item 1 or item 2 of the scope of patent application further includes a connecting portion connecting the non-return plate and the water receiving portion, and the connecting portion includes a connecting portion from the first opening to the drain groove At least one water hole through which water entering inside can pass. As described in item 5 of the scope of patent application, the dehumidifier further includes a pair of the aforementioned water passage holes facing each other. Such as the dehumidifier described in item 1 or item 2 of the scope of patent application, in which the aforementioned drainage A part of the upper surface portion formed by the upper surface of the groove forms a second opening. The water receiving portion is connected to the upper surface portion by a hinge, and can block the second opening without blocking the second opening. Displacement in an open state. The dehumidifier described in item 7 of the scope of patent application further includes a connecting portion connecting the non-return plate and the water receiving portion, and the connecting portion includes water that enters the drain groove from the first opening At least one water passage hole that can pass through, and the water passage hole system includes a water passage hole that faces downward when the water receiving portion does not block the second opening. In the dehumidifier described in item 7 of the scope of patent application, the upper surface portion can be removed from the tank body which is the main body of the drainage tank. In the dehumidifier described in item 8 of the scope of patent application, the upper surface portion can be removed from the tank body which is the main body of the drainage tank.

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