CN110793113B

CN110793113B - Dehumidifier

Info

Publication number: CN110793113B
Application number: CN201910663692.0A
Authority: CN
Inventors: 乳井一夫; 明里好孝
Original assignee: Mitsubishi Electric Home Appliance Co Ltd; Mitsubishi Electric Corp
Current assignee: Mitsubishi Electric Home Appliance Co Ltd; Mitsubishi Electric Corp
Priority date: 2018-08-03
Filing date: 2019-07-23
Publication date: 2021-11-16
Anticipated expiration: 2039-07-23
Also published as: TW202015557A; CN110793113A; JP7087800B2; JP2020018990A; TWI727375B

Abstract

The invention provides a dehumidifier which can prevent water from spilling out of a drain tank when the drain tank is taken out or carried through a simple and space-saving structure. The dehumidifier (1) is provided with a dehumidifying mechanism (3) for removing moisture in air and a water discharging tank (5) for storing liquid water discharged from the dehumidifying mechanism (3). The drain tank (5) is provided with: a water receiving part (a small cover (18)) having a first opening (18a) which is an inlet for water to enter the drainage tank (5); and a check plate (19) which is arranged in the drain tank (5) at a position higher than the water surface (full water position (201)) when the drain tank (5) is full of water and faces the first opening (18 a).

Description

Dehumidifier

Technical Field

The invention relates to a dehumidifier.

Background

Fig. 6 is an exploded perspective view of a drain tank provided in the dehumidifier disclosed in japanese patent No. 4347493. As shown in fig. 6, an upper surface opening 101 of the drain tank 100 is covered with a large tank cover 102 and a small tank cover 103 that is detachable from the large tank cover 102. The drain water enters the drain tank 100 through an inlet 104 provided in the small tank cover 103.

Fig. 7 is a sectional view of a drain tank provided in the dehumidifier disclosed in japanese patent application laid-open No. 2000-266360. As shown in fig. 7, the drain water collecting opening 105 of the drain tank 100 is provided with a check valve 106 in a constantly closed state. The check valve 106 prevents water leakage when the dehumidifier is tilted and water splashing due to shaking when the drain box 100 is carried. When the drain tank 100 is stored in an appropriate position during the dehumidification operation, the water conduit 107 connected to the drain pan presses the check valve 106, so that the check valve 106 is opened, and the drain water can be filled into the drain tank 100.

Prior art documents

Patent document

Patent document 1: japanese patent No. 4347493

Patent document 2: japanese patent laid-open publication No. 2000-266360

Disclosure of Invention

Problems to be solved by the invention

In the conventional art shown in fig. 6, the entire upper surface of the drain box 100 is covered with the large box cover 102 and the small box cover 103 to prevent water from splashing, but since the hole of the inflow port 104 is always open, water may splash out of the hole of the inflow port 104 due to shaking when the drain box 100 is carried, and the floor may be wet.

In the conventional technique shown in fig. 7, when the drain tank 100 is stored at a position deviated from an appropriate position, a gap is generated in a fitting portion where the water conduit 107 and the check valve 106 are fitted, and the drain water may leak. Further, there is a problem that the structure is complicated and the cost is high. Further, since a space for disposing a mechanism for opening and closing the check valve 106 needs to be provided above the drain tank 100, there is a problem that the capacity of the drain tank 100 needs to be reduced by the amount corresponding to the space.

The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a dehumidifier capable of preventing water from spilling out of a drain box when the drain box is taken out or transported, with a simple and space-saving structure.

Means for solving the problems

The dehumidifier of the invention has a dehumidifying mechanism for removing moisture in air and a water drainage tank for storing water of liquid discharged from the dehumidifying mechanism, wherein the water drainage tank comprises: a water receiving portion having a first opening that becomes an inlet for water to enter the interior of the drain tank; and a check plate disposed inside the drain tank at a position higher than a water surface when the drain tank is full of water, and facing the first opening.

ADVANTAGEOUS EFFECTS OF INVENTION

According to the present invention, it is possible to prevent water from spilling out of the drain box when the drain box is taken out or carried, by a simple and space-saving structure.

Drawings

Fig. 1 is a sectional side view showing a dehumidifier according to embodiment 1.

Fig. 2 is a sectional side view showing a drain tank provided in the dehumidifier according to embodiment 1.

Fig. 3 is an exploded perspective view showing a small lid, a check plate, and a coupling portion provided in the drain tank shown in fig. 1 and 2.

Fig. 4 is an enlarged sectional view of a portion of fig. 2.

Fig. 5 is a perspective view illustrating the drain tank shown in fig. 1 and 2.

Fig. 6 is an exploded perspective view showing a drain tank provided in the dehumidifier disclosed in japanese patent No. 4347493.

Fig. 7 is a sectional view showing a drain tank provided in the dehumidifier disclosed in japanese patent application laid-open No. 2000-266360.

Detailed Description

Hereinafter, embodiments will be described with reference to the drawings. The same reference numerals are given to the common or corresponding elements in the drawings, and redundant description is simplified or omitted.

Embodiment 1.

Fig. 1 is a sectional side view showing a dehumidifier 1 according to embodiment 1. The dehumidifier 1 of the present embodiment is used in a state of being placed on the floor surface 200. In the following description, the directions and positional relationships of the respective portions are determined as a case where the dehumidifier 1 is placed on the horizontal floor surface 200. The left side of the paper of fig. 1 corresponds to the front of the dehumidifier 1, and the right side of the paper of fig. 1 corresponds to the back of the dehumidifier 1.

As shown in fig. 1, the dehumidifier 1 of the present embodiment includes a main body case 2, a dehumidifying mechanism 3, a fan unit 4, and a drain tank 5. The main body case 2 corresponds to a structure constituting a skeleton of the dehumidifier 1. The dehumidifying mechanism 3, the fan unit 4, and the drain tank 5 are housed inside the main body case 2. At the bottom of the main body case 2, a plurality of wheels 10 are provided in contact with the floor surface 200. When the dehumidifier 1 is moved to another position on the floor surface 200, the dehumidifier 1 can be easily moved by rolling the wheels 10. The main body case 2 of the illustrated example has a rectangular parallelepiped shape, but the shape of the main body case 2 is not limited to the rectangular parallelepiped shape.

The main body case 2 is formed with an air inlet 6 and an air outlet 7. In the illustrated example, an air inlet 6 is provided to open on the back surface of the main body casing 2, and an air outlet 7 is provided to open on the top surface of the main body casing 2. An air passage 12 is formed inside the main body case 2. Air passage 12 is a space that forms a passage for air flowing from air inlet 6 to air outlet 7.

The fan unit 4 includes a sirocco fan 8, a motor 9 for rotating the sirocco fan 8, and a fan case 11 for housing the sirocco fan 8 and the motor 9. The sirocco fan 8 is disposed in the air passage 12. When the sirocco fan 8 rotates, the air flowing into the main body casing 2 from the air inlet 6 passes through the air passage 12, and then flows out to the outside of the main body casing 2 from the air outlet 7. The fan unit 4 is an example of an air blowing mechanism.

The dehumidifying mechanism 3 includes a refrigerant circuit. The refrigerant circuit includes an evaporator 13, a condenser 14, a compressor 15, and refrigerant pipes (not shown) connecting these in an annular shape. The dehumidifying mechanism 3 of the present embodiment removes moisture in the air by operating the refrigeration cycle in the refrigerant circuit. Evaporator 13 and condenser 14 are disposed in air passage 12. The evaporator 13 and the condenser 14 correspond to a heat exchanger that performs heat exchange between the air and the refrigerant passing through the air passage 12. In the illustrated example, condenser 14 is disposed upstream of sirocco fan 8 in the air flow, and evaporator 13 is disposed upstream of condenser 14 in the air flow. The air flowing into the duct 12 from the inlet 6 is first cooled by the evaporator 13. As a result, moisture in the air condenses, and condenses on the surface of the evaporator 13. The liquid water condensed on the surface of the evaporator 13 flows downward by gravity. In this way, the dehumidifying mechanism 3 discharges the moisture removed from the air as liquid water. The evaporator 13 evaporates the refrigerant by causing the low-pressure refrigerant to absorb heat of air. 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 cooled while passing through the condenser 14 is decompressed by a decompression device (not shown), and then flows into the evaporator 13.

The dehumidifying mechanism 3 is not limited to the refrigeration cycle system described above, and may be a system of another system. For example, the dehumidifying unit 3 may be a desiccant type device. In the case of the desiccant system, the dehumidifying means 3 includes an adsorbent for adsorbing moisture in the air, a heater, and a heat exchanger. The moisture adsorbed by the adsorbent is heated by the heater. The moisture heated by the heater is cooled by the heat exchanger and condensed.

In the following description, the liquid water discharged from the dehumidifying means 3 is sometimes referred to as "drain water". The drain tank 5 stores drain water. The drain tank 5 of the present embodiment has a box-like outer shape as a whole. The drain tank 5 includes a tank main body 16, a large lid 17, a small lid 18, and a check plate 19. The tank main body 16 corresponds to a main body of the drain tank 5. The box main body 16 is a container having an upper surface opening. The large lid 17 is a lid that closes an upper surface opening of the box main body 16. The large lid 17 corresponds to an upper surface portion forming an upper surface of the drain tank 5. The large lid 17 has a size to cover the entire upper surface opening of the box main body 16. The small lid 18 is attached to the large lid 17. The small cover 18 has a first opening 18 a. The first opening 18a corresponds to an inlet for the supply water to enter the inside of the drain tank 5. The check plate 19 is disposed inside the drain tank 5.

A drain pan 20 is disposed inside the main body casing 2. The drain pan 20 is disposed 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 drain water that has condensed on the evaporator 13 and has fallen from the evaporator 13. The drain pan 20 is formed with a water conduit 20 a. The water conduit 20a is a passage of water passing from the upper surface to the lower surface of the drain pan 20. The upper surface of the drain pan 20 is inclined with respect to the horizontal plane so as to descend toward the water guide passage 20 a. The drain water falling toward the upper surface of the drain pan 20 is collected in the water conduit 20a along this inclination.

The drain tank 5 is disposed in a drain tank housing chamber 21 formed inside the main body case 2. In the present embodiment, the space located below the fan unit 4, the evaporator 13, the condenser 14, and the drain pan 20 corresponds to the drain tank housing chamber 21. The drain tank 5 is detachable from the drain tank storage chamber 21 to the outside of the main body case 2. In the present embodiment, the drain box 5 can be taken out from the drain box housing chamber 21 by pulling the drain box 5 leftward in fig. 1 with respect to the main body case 2.

The small lid 18 is provided with a receiving tray 18b that receives drain water. The small lid 18 corresponds to a water receiving portion for receiving drain water. The first opening 18a is formed in a central portion of the receiving tray 18 b. The upper surface of the receiving tray 18b is inclined with respect to the horizontal plane in such a manner as to descend toward the first opening 18 a. As shown in fig. 1, in a state where the drain tank 5 is disposed at an appropriate position in the drain tank accommodating chamber 21, the water conduit 20a of the drain pan 20 is positioned above the catch pan 18 b. The drain water received by the drain pan 20 passes through the water conduit 20a and falls toward the receiving pan 18 b. The drain water that has fallen down to the receiving pan 18b collects along the inclination of the upper surface of the receiving pan 18b toward the first opening 18a, and enters the interior of the drain tank 5 through the first opening 18 a. The catch pan 18b is provided slightly larger in the water conduit 20a so as to cover the water conduit 20a and the surrounding area thereof when viewed from the plumb direction. Thus, even if the position of the drain tank 5 is slightly displaced, the catch tray 18b can reliably catch the drain water falling from the water conduit 20 a. In the embodiment of the present invention, the small lid 18 constitutes the water receiving portion, but the water receiving portion may be integrally provided on the large lid 17 instead of the small lid 18.

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) which is a water level sensor capable of detecting that the water level in the drain tank 5 reaches the full water level 201.

Near the air outlet 7, an air guide plate 22 for adjusting the direction of the airflow blown out from the air outlet 7 to the outside of the main body casing 2 is provided.

Next, the dehumidifying operation of the dehumidifier 1 will be described. In the dehumidification operation, the following configuration is performed. The dehumidifying mechanism 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 this order, and is then blown 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 to absorb ambient heat. As a result, the evaporator 13 is cooled to a low temperature. The evaporator 13 having a low temperature condenses moisture in the air sucked into the air duct 12. The air cooled and dehumidified while passing through the evaporator 13 is heated by the condenser 14, returned to the normal temperature, and then discharged to the outside of the dehumidifier 1.

In the dehumidification operation, the drain water is gradually stored in the drain tank 5. When the full water sensor detects that the drain tank 5 is full of water, a control device (not shown) provided in the dehumidifier 1 stops the dehumidifying operation. Preferably, the dehumidifier 1 includes a notification means for notifying a user of the fact that the drain tank 5 is full of water. The notification means is, for example, a buzzer (not shown) or a lamp (not shown).

The user takes out the drain tank 5 filled with water from the drain tank storage chamber 21, holds the drain tank 5 with a hand, and moves the drain tank to a wash stand or the like, thereby performing an operation of pouring the drain water 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 having such a weight is taken out of the drain tank storage chamber 21 or transported, the drain tank 5 is likely to be in an unstable state, and thus the drain tank 5 may be shaken. If the drain tank 5 shakes, water surface fluctuation or water splashing occurs in the drain tank 5.

Fig. 2 is a cross-sectional side view of the drain tank 5 provided in the dehumidifier 1 according to embodiment 1. Fig. 2 corresponds to an enlarged view of the drain tank 5 in fig. 1. As shown in fig. 2, the tank main body 16 includes a side wall portion 16a forming a side wall of the drain tank 5 and a bottom wall portion 16b forming a bottom of the drain tank 5. The side wall portion 16a is substantially parallel to the plumb line. The bottom wall portion 16b is substantially parallel with respect to the horizontal plane. The upper end of the side wall portion 16a forms the edge of the upper surface opening of the box main body 16. The entire upper surface opening of the box main body 16 is covered with a large lid 17 and a small lid 18.

The check plate 19 is a plate-like member disposed at a position facing the first opening 18 a. The check plate 19 is disposed at a position higher than the full water position 201. That is, the entire check plate 19 is located above the full water position 201. The check plate 19 covers the first opening 18a from below. According to the present embodiment, the following effects can be obtained by providing the check plate 19. When the water level in the drain tank 5 fluctuates or water splashes during the taking out or transportation of the drain tank 5 filled with water, the check plate 19 can reliably prevent the drain water from contacting the first opening 18 a. As a result, the drain water can be reliably prevented from being discharged from the first opening 18a to the outside of the drain tank 5, and therefore, wetting of the floor or the like can be reliably prevented. Further, the check plate 19 having a low cost and a simple structure without a valve mechanism can achieve the above-described effects. In contrast, if a configuration is assumed in which a check valve mechanism is provided at the inlet portion of the drain tank 5 as in the conventional technique shown in fig. 7, the check valve mechanism may not open when the drain tank 5 is disposed at a position deviated from an appropriate position in the drain tank housing chamber 21. If the check valve mechanism is not opened, the drain water discharged from the dehumidifier 3 cannot flow into the drain tank 5, and thus the drain water leaks to the outside of the dehumidifier 1. In contrast, according to the present embodiment, the occurrence of water leakage as described above 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 16 a. That is, a space 202 is formed between the water surface in the drain tank 5 and the lower surface of the large lid 17 in the full water state. The full water position 201 may be a position below the upper end 16c of the inner surface of the side wall portion 16a by several cm, for example. According to the present embodiment, by providing a margin in the depth of the drain tank 5, that is, by forming the space 202, the following effects can be obtained. After the full water sensor detects that the drain tank 5 is full of water and the dehumidification operation is stopped, the drain water attached to the evaporator 13 may gradually flow down and fall onto the catch basin 18 b. Therefore, even after the water level in the drain tank 5 reaches the full water level 201 and the dehumidification operation is stopped, the drain water may flow further into the drain tank 5. Since the drain tank 5 has a sufficient depth, additional drain water flowing in after the dehumidification operation is stopped can be reliably stored. Further, even if the water level in the drain tank 5 fluctuates slightly when the drain tank 5 is taken out or transported, the drain water is less likely to contact the lower surface of the large lid 17.

The check plate 19 is disposed at a position lower than the upper end 16c of the inner surface of the side wall portion 16 a. That is, the check plate 19 is disposed in the space 202, and the entire check plate 19 is located at a position lower than the upper end 16c of the inner surface of the side wall portion 16 a. According to the present embodiment, the check plate 19 can be disposed by effectively utilizing the space of the space 202. Therefore, the check plate 19 can be provided without reducing the amount of drain water that can be stored in the drain tank 5.

The first opening 18a is a cylindrical passage along the plumb line. The axial direction of the first opening 18a is parallel with respect to the plumb line. The upper surface 19a of the check plate 19 faces the first opening 18 a. Preferably, the position of the center of the check plate 19 coincides with the position of the center of the first opening 18a as viewed from the plumb direction.

Preferably, the area of the pattern obtained by projecting the check plate 19 with respect to the horizontal plane is larger than the opening area of the first opening 18 a. With this configuration, the check plate 19 can more reliably prevent the discharge of the drain water from the first opening 18 a.

Preferably, the entirety of the first opening 18a is located inside the outer edge 19b of the check plate 19 as viewed from the plumb direction. With this configuration, the check plate 19 can more reliably prevent the discharge of the drain water from the first opening 18 a.

The drain water that has entered the drain tank 5 through the first opening 18a falls toward the upper surface 19a of the check plate 19. The drain water flows along the upper surface 19a of the check plate 19 and falls from the outer edge 19b toward the water surface in the drain tank 5.

At least a part of the upper surface 19a of the check plate 19 in the present embodiment is inclined with respect to the horizontal plane so as to descend outward from the central portion of the upper surface 19 a. Thus, the drain water falling down to the upper surface 19a of the check plate 19 can smoothly flow down from the check plate 19 without being retained on the check plate 19. As a modification, the entire upper surface 19a of the check plate 19 may be parallel to the horizontal plane. In this case, effects similar to those described above can also be obtained.

The drain tank 5 of the present embodiment includes a connecting portion 23 that connects the check plate 19 and the small lid 18. The check plate 19 is fixed to the small lid 18 via a coupling portion 23. According to the present embodiment, the following effects can be obtained by providing the connection portion 23. Since the small lid 18 can support the check plate 19, it is not necessary to provide a member for supporting the check plate 19 in the box main body 16. As a result, the structure is simplified and the weight is reduced.

The coupling portion 23 in the present embodiment protrudes upward from the upper surface 19a of the check plate 19. The coupling portion 23 is formed as an integral member with the check plate 19. This reduces the number of parts, which is advantageous for cost reduction. As a modification, the coupling portion 23 may be a member separate from the check plate 19, or the coupling portion 23 may be formed as a member integral with the small lid 18.

The drain tank 5 of the present embodiment includes

water passage holes

23a and 23b located between the small lid 18 and the check plate 19. The drain water entering the drain tank 5 through the first opening 18a can pass through the

water passage holes

23a and 23 b. The

water passage holes

23a, 23b are formed in the coupling portion 23. The

water passage holes

23a, 23b open in a direction perpendicular to a straight line passing through the center of the first opening 18 a. That is, the

water passage holes

23a and 23b are opened in the horizontal direction. The drain water that has dropped from the first opening 18a to the upper surface 19a of the check plate 19 flows through the

water passage holes

23a, 23b to the outer edge 19b of the check plate 19, and then drops toward the water surface in the drain tank 5.

According to the present embodiment, the following effects can be obtained by providing the

water passage holes

23a and 23 b. When water sloshing occurs in the drain tank 5 during removal or transportation of the drain tank 5, the drain water cannot reach the first opening 18a unless it first passes through the

water passage holes

23a and 23 b. Therefore, the discharge of the drain water from the first opening 18a can be more reliably prevented.

In the present embodiment, a pair of

water passage holes

23a and 23b are provided. The pair of

water passage holes

23a and 23b are formed at positions facing each other with a straight line passing through the center of the first opening 18a interposed therebetween. The drain tank 5 is not limited to the illustrated configuration, and may have only one water passage hole instead of the pair of

water passage holes

23a and 23b, or may have 3 or more water passage holes.

The large lid 17 is detachable from the box main body 16. When the large lid 17 is attached to the box main body 16, the large lid 17 can be fixed to the box main body 16 by fitting the large lid 17 to the upper surface opening of the box main body 16. For example, when the inside of the drain tank 5 is cleaned, the cleaning operation can be easily performed by detaching the large lid 17 from the tank main body 16.

Fig. 3 is an exploded perspective view showing the small lid 18, the check plate 19, and the connection portion 23 provided in the drain tank 5 shown in fig. 1 and 2. Fig. 3 shows a state before the check plate 19 and the coupling portion 23 are mounted to the small lid 18 as an integral member. As shown in fig. 3, the check plate 19 in the present embodiment has a circular outer shape when viewed from the plumb direction. The coupling portion 23 has a cylindrical shape concentric with the check plate 19. The outer diameter of the check plate 19 is larger than the outer diameter of the coupling portion 23. The

water passage holes

23a and 23b are formed by removing a part of the cylindrical peripheral wall of the coupling portion 23. The coupling portion 23 is formed with a pair of fitting holes 23 c. Each fitting hole 23c penetrates the cylindrical peripheral wall of the coupling portion 23. The pair of fitting holes 23c are formed at positions shifted by 90 degrees from the

water passage holes

23a and 23b with respect to an angle around the center line of the coupling portion 23.

Fig. 4 is an enlarged sectional view of a portion 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 catch tray 18 b. The outer diameter of the cylindrical portion 18c is equal to the inner diameter of the coupling portion 23. The cylindrical portion 18c is inserted into the coupling portion 23 from an opening at the upper end of the coupling portion 23. The cylindrical portion 18c has a claw portion (not shown) projecting from the outer peripheral surface thereof. The claw portion is fitted into the fitting hole 23c of the coupling portion 23, whereby the coupling portion 23 is fixed to the cylindrical portion 18 c.

The flow of drain water indicated by an arrow in fig. 4 schematically shows an example of the operation of the drain water when the drain tank 5 is taken out or when the water surface in the drain tank 5 fluctuates during transportation. If the sloshing of the drain water in the drain tank 5 becomes large, the drain water may fluctuate above the upper surface 19a of the check plate 19. The drain water thus fluctuated is assumed to flow into the water passage hole 23a as indicated by an arrow in fig. 4. The water passage holes 23b are located at positions facing the water passage holes 23 a. Therefore, the drain water flowing from the water passage hole 23a into the inside of the coupling portion 23 is discharged directly to the outside of the coupling portion 23 through the water passage hole 23 b. On the other hand, when the drain water flows into the inside of the coupling portion 23 through the water passage hole 23b, the drain water is discharged to the outside of the coupling portion 23 through the water passage hole 23 a. As described above, according to the present embodiment, even if the drain water flows into the water passage hole 23a or the water passage hole 23b, the drain water can be reliably suppressed from flowing to the first opening 18 a. As a result, the drain water can be more reliably prevented from being discharged from the first opening 18a to the outside of the drain tank 5.

Fig. 5 is a perspective view of the drain tank 5 shown in fig. 1 and 2. Fig. 5 shows a state where the drain water in the drain tank 5 is discarded. As shown in fig. 5, a second opening 17a is formed in a part of the large lid 17. The small lid 18 can be displaced into a state of closing the second opening 17a and a state of not closing the second opening 17 a. Fig. 1 and 2 show a state in which the small lid 18 closes the second opening 17a, that is, a state in which the small lid 18 is closed. Fig. 5 shows a state in which the small lid 18 does not close the second opening 17a, i.e., a state in which the small lid 18 is opened.

The small lid 18 in the present embodiment is coupled to the large lid 17 via a hinge portion 24. The small lid 18 can be moved to a closed position for closing the second opening 17a and an open position for not closing the second opening 17a by rotating about the hinge portion 24. According to the present embodiment, the hinge portion 24 is provided, so that the small lid 18 can be easily opened and closed. As a modification, the hinge portion 24 may be omitted, and the small lid 18 may be detachably attached to the second opening 17a of the large lid 17.

When the drain water in the drain tank 5 is to be drained, the small lid 18 is opened as shown in fig. 5, and the drain water can be drained from the second opening 17 a. According to the present embodiment, the following effects can be obtained when the drain water in the drain tank 5 is discarded. Since the large lid 17 does not need to be detached from the box main body 16, the operation is simple. Since the second opening 17a formed in a part of the large lid 17 serves as a drain port for the drain water and can be narrowed, the drain water is not spread and is easily poured on a wash stand or the like.

In the present embodiment, since the check plate 19 is attached to the small lid 18 via the connecting portion 23, when the small lid 18 is opened, the check plate 19 and the connecting portion 23 are exposed to the outside of the drain tank 5. This allows the user to easily recognize foreign matter such as scale or dirt that has accumulated in the check plate 19 and the

water passage holes

23a and 23b when pouring water. As a result, the user can easily perform maintenance such as cleaning of the check plate 19 and the

water passage holes

23a and 23 b.

The axis of the hinge 24 is a direction perpendicular to the paper of fig. 2. A straight line connecting the center of the water passage hole 23a and the center of the water passage hole 23b is perpendicular to the axis of the hinge portion 24. When the small lid 18 is rotated about the hinge portion 24 from the state shown in fig. 2, the small lid 18 moves to the open position, and at this time, the water passage hole 23a faces downward and the water passage hole 23b faces upward. According to the present embodiment, since the water passage holes 23a are directed downward in the state where the small lid 18 is opened, natural falling of water droplets, dust, and the like slightly remaining in the water passage holes 23a due to surface tension from the water passage holes 23a can be promoted. This can reduce the number of times of maintenance. The water droplets and the like remaining in the water passage holes 23b also fall toward the water passage holes 23a by gravity, and are discharged to the outside through the water passage holes 23 a. Therefore, it is possible to prevent water droplets and the like from remaining in the water passage holes 23 b.

In the present embodiment, an example in which the small lid 18 different from the large lid 17 is provided and the first opening 18a, the catch tray 18b, and the check plate 19 are provided in the small lid 18 has been described, but the present invention is not limited to this configuration, and a configuration corresponding to the first opening 18a, the catch tray 18b, and the check plate 19 may be provided directly in the large lid 17. Even in such a case, the same effects as those of the present embodiment can be obtained in terms of preventing the drain water from being discharged from the first opening 18a when the drain tank 5 is taken out or transported.

Description of reference numerals

1, a dehumidifier; 2 a main body case; 3, a dehumidifying mechanism; 4 a fan unit; 5, a drainage tank; 6 air suction port; 7 an air outlet; 8a multiblade fan; 9a motor; 10 wheels; 11 a fan housing; 12 air passages; 13 an evaporator; 14 a condenser; 15 a compressor; 16a box main body; 16a side wall portion; 16b bottom wall portion; 16c upper end; 17 large cover; 17a second opening; 18 small covers; 18a first opening; 18b receiving a disc; 18c a cylindrical portion; 19a check plate; 19a upper surface; 19b outer edge; 20a drain pan; 20a water guide path; 21 a drain tank storage chamber; 22 air deflector; 23a connecting part; 23a water through hole; 23b a water through hole; 23c a fitting hole; a 24 hinge portion; 100 a drainage tank; 101 upper surface opening part; 102 big box cover; 103 small box covers; 104 a flow inlet; 105 an opening for collection; 106 a check valve; 107 water conduits; 200 floor surfaces; 201 full water position; 202 space.

Claims

1. A dehumidifier having a dehumidifying means for removing moisture in air and a drain tank for storing water of liquid discharged from the dehumidifying means,

the drain tank includes:

a water receiving portion having a first opening that serves as an inlet through which water enters the interior of the drain tank; and

a check plate disposed in the drain tank at a position higher than a water surface when the drain tank is full of water and facing the first opening,

the water receiving part is provided with a receiving tray with an upper surface,

the first opening is formed in the receiving tray,

drain water that has dropped from above onto the upper surface of the catch pan collects along the upper surface of the catch pan toward the first opening and enters the interior of the drain tank through the first opening,

the dehumidifier includes a coupling portion that couples the check plate and the water receiving portion, and the coupling portion includes a pair of water passage holes facing each other and through which water entering the drain tank from the first opening can pass.

2. The dehumidifier of claim 1, wherein,

the area of a pattern obtained by projecting the check plate with respect to a horizontal plane is larger than the opening area of the first opening.

3. The dehumidifier of claim 1 or 2,

the check plate is disposed at a position lower than an upper end of an inner surface of the side wall of the drain tank.

4. The dehumidifier of claim 1 or 2,

at least a part of the upper surface of the check plate is inclined so as to descend from the central portion toward the outside.

5. The dehumidifier of claim 1 or 2,

a second opening is formed in a part of an upper surface portion forming an upper surface of the drain tank,

the water receiving portion is connected to the upper surface portion via a hinge portion and is displaceable between a state of blocking the second opening and a state of not blocking the second opening.

6. The dehumidifier of claim 5 wherein,

the water passage hole includes a water passage hole facing downward when the water receiving portion is in a state of not blocking the second opening.

7. The dehumidifier of claim 5 wherein,

the upper surface portion is detachable from a tank main body as a main body of the drain tank.