Washing and drying machine

Abstract

A washing and drying machine (1) is provided with: an outer tub (3) in which water is stored; a rotatable inner tub (4) for accommodating laundry; an air supply unit (5a) for supplying air to the outer tub (3) and the inner tub (4); air paths (5d, 5e) that connect the outer tub (3) and the air blowing unit (5a); and a first collection part (6a) which is arranged between the outer tub (3) and the air paths (5d, 5e) and collects the lint (r1). The lowest end part of the first collection part (6a) is arranged above a waterline (k1) which is the water level of the outer tub (3).

Description

Technical Field

[0001] The present invention relates to a washing and drying machine. Background Art

[0002] As a conventional washing and drying machine, there is known a washing and drying machine which utilizes a water flow to remove foreign matter adhering to an air duct filter on the upstream side of a blower.

[0003] For example, claim 1 of patent document 1 states: "A washing and drying machine comprising: a water tub; a rotating drum rotatably arranged in the water tub; a dehumidifying unit for dehumidifying air introduced from the rotating drum; a heating unit for heating the air dehumidified by the dehumidifying unit; an air supply unit for guiding the air in the rotating drum to the dehumidifying unit and blowing the air heated by the heating unit into the rotating drum; a filter unit located between the rotating drum and the air supply unit and disposed on the upstream side of the air flow generated by the air supply unit during a drying process, i.e., on the path of the suction port side, and arranged to be immersed in the washing water supplied to the water tub during a washing process or a rinsing process, the washing and drying machine comprising: a cleaning unit for causing the washing water to generate a water flow based on the rotation drive of the rotating drum to remove foreign matter attached to the filter unit; and a rotating drum rotation control unit for changing the rotation speed of the rotating drum during a washing process or a rinsing process."

[0004] In addition, in Patent Document 1, as shown in Figure 5 of the document, a filter is arranged at the lower back side of the water bucket immersed in the washing water during the washing process and the rinsing process to capture foreign matter such as cotton dust and thread ends (hereinafter referred to as "lint") contained in the circulating air during the drying process that is larger than the coarseness of the filter mesh (1mm to 3mm in paragraph 0060 of the document), thereby preventing the foreign matter from invading the blower and heater downstream of the filter.

[0005] As described above, in the washing and drying machine of Patent Document 1, the lint attached to the filter surface during the drying process is removed from the filter surface by the water flow when the rotary drum is rotated in the subsequent washing process and rinsing process, and then discharged from the drain port opened at the bottom of the water barrel, thereby eliminating the blockage on the filter surface and suppressing the reduction in the circulating air volume during the drying process.

[0006] In addition, as a conventional washing and drying machine, there is a washing and drying machine described in Patent Document 2 listed below.

[0007] According to the washing and drying machine (10) of Patent Document 2, a lint collecting filter (32) for collecting lint (lint) generated during drying is provided in a circulating air passage (24) for drying. It is known that water is supplied through a water spraying section (50) to clean the lint collecting filter (32), thereby removing the lint (lint), thereby improving maintainability while maintaining drying performance.

[0008] Prior art literature

[0009] Patent Literature

[0010] Patent Document 1: Japanese Patent No. 3863167

[0011] Patent Document 2: Japanese Patent No. 5897390 ( Figure 6 , paragraphs 0033 to 0037, etc.) Summary of the invention

[0012] Technical problem to be solved by the invention

[0013] However, in the arrangement of the filter shown in the washing and drying machine of Patent Document 1, since the filter is always exposed to washing water, foreign matter such as mud may accumulate on the lint attached to the filter and become fixed to the filter.

[0014] In addition, in the water supply method of the washing and drying machine (10) of Patent Document 2, there is no countermeasure for fluctuations in the water supply pressure of the water spraying unit (50) supplied to the customer's residence. Therefore, due to the water supply pressure of the water spraying unit (50), the washing water may penetrate into undesired locations, such as the downstream circulation air duct (24), i.e., the drying air duct.

[0015] The present invention is proposed in view of the above actual situation, and its purpose is to provide a washing and drying machine that can well clean the air duct filter with lint attached thereto, and can well clean the lint collecting filter in the circulating air duct regardless of the water supply pressure.

[0016] Technical solutions to solve problems

[0017] In order to solve the above-mentioned problems, a first washing and drying machine of the present invention includes: an outer barrel for storing water; a rotatable inner barrel for storing laundry; an air supply unit for supplying air to the outer barrel and the inner barrel; an air passage connecting the outer barrel and the air supply unit; and a first collecting unit for collecting lint, the lowermost end of which is arranged between the outer barrel and the air passage, and is arranged above a waterline which is the water level of the outer barrel.

[0018] The second aspect of the present invention is a washing and drying machine, which includes: a box body forming an outer contour; an outer barrel for storing water; a rotatable inner barrel for storing laundry; a heating device and a dehumidifying device for drying wet laundry; an air supply device for supplying air into the inner barrel; a circulating air path connecting the outer barrel and the air supply device; a filter for capturing lint generated during drying; and a cleaning section for cleaning the filter, the cleaning section having a water supply section, a water storage section, and a water discharge section.

[0019] Effects of the Invention

[0020] According to the present invention, a washing and drying machine is provided which can satisfactorily clean an air duct filter to which lint is attached, and can satisfactorily clean a lint collecting filter in a circulating air duct regardless of water supply pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a cross-sectional view of the washing and drying machine according to the first embodiment of the present invention as seen from the side.

[0022] Figure 2 It is a front schematic diagram of the outer tub and the air duct filter of the washing and drying machine according to the first embodiment.

[0023] Figure 3A It is a front schematic diagram showing the state of the outer tub and the air duct filter inside it during the washing process at the first operation of the comparative example (conventional technology).

[0024] Figure 3B It is a front view schematically showing the state of the outer tub and the air duct filter inside it during the rinsing step in the first operation of the comparative example (conventional technology).

[0025] Figure 3C It is a front view schematically showing the state of the outer tub and the air duct filter inside it during the dehydration process during the first operation of the comparative example (conventional technology).

[0026] Figure 3D It is a front schematic diagram showing the state of the outer barrel and the air duct filter inside it during the drying process during the first operation of the comparative example (conventional technology).

[0027] Figure 4A It is a front schematic diagram showing the state of the outer tub and the air passage inside it during the washing process in the second operation of the comparative example (conventional technology).

[0028] Figure 4B It is a front schematic diagram showing the state of the outer tub and the air duct filter inside it during the rinsing process in the second operation of the comparative example (conventional technology).

[0029] Figure 4CIt is a front view schematically showing the state of the outer barrel and the air duct filter inside it during the filter cleaning step in the second operation of the comparative example (conventional technology).

[0030] Figure 4D It is a front view schematically showing the state of the outer tub and the air duct filter inside it during the dehydration process in the second operation of the comparative example (conventional technology).

[0031] Figure 4E It is a front schematic diagram showing the state of the outer barrel and the air duct filter inside it during the drying process in the second operation of the comparative example (conventional technology).

[0032] Figure 5A It is a figure which shows an example of the washing process of a washing and drying machine.

[0033] Figure 5B This is a diagram showing another example 1 of the washing process of the washing and drying machine.

[0034] Figure 5C This is a diagram showing another example 2 of the washing process of the washing and drying machine.

[0035] Figure 6 It is a cross-sectional view of a washing and drying machine according to a second embodiment of the present invention.

[0036] Fig. 7A yes Figure 6 II cross-sectional view.

[0037] Figure 7B yes Figure 6 II-II cross-section diagram

[0038] Figure 8 It is a schematic diagram of the outer barrel and the first air path filter in the outer barrel observed from the front.

[0039] Fig. 9 It is a schematic diagram of the structure of the heat pump device of the second embodiment.

[0040] Fig.10 yes Fig. 7A Enlarged view of Part III.

[0041] Fig.11 Comparative Example (Prior Art) Fig. 9 The IV-IV section corresponds to the enlarged view.

[0042] Fig.12 Example 1 of the second embodiment Fig. 9 Enlarged view of section IV-IV.

[0043] Fig.13 Example 2 of the second embodiment Fig. 9 Enlarged view of section IV-IV.

[0044] Fig.14 This is a cross-sectional view of a washing and drying machine according to a third embodiment of the present invention as seen from the side.

[0045] Fig.15 This is a diagram showing the analysis results of the flow velocity distribution of the dry air in the second air passage of the duct of the washing and drying machine according to the third embodiment when the duct thickness is 17 mm.

[0046] Fig.16 The schematic cross-sectional view of the washing and drying machine according to the fourth embodiment is shown as a side view.

[0047] Fig.17 It is a schematic diagram of the structure of the heat pump device according to the fourth embodiment.

[0048] Fig.18 yes Fig.16 An enlarged schematic diagram of the V portion of FIG.

[0049] Fig.19 This is a three-dimensional view of the second air duct filter and the cleaning unit as viewed from the upper left front.

[0050] Fig. 20 yes Fig.19 VII-VII cross-section diagram.

[0051] Fig.21A yes Fig.16 An enlarged view of the water storage portion as viewed in the VI direction is shown.

[0052] Fig.21B yes Fig.21A VIII-VIII cross-sectional view of . DETAILED DESCRIPTION

[0053] The following is an explanation of the embodiment of the washing and drying machine of the present invention using the accompanying drawings. In addition, the following is an example of a drum-type washing and drying machine in which the rotating axis of the inner drum is approximately horizontal as a specific structure of the washing and drying machine, but the same effect can be obtained even if the present invention is applied to a vertical washing and drying machine in which the rotating axis of the inner drum is approximately vertical.

[0054] <<First embodiment>>

[0055] <Washing and drying machine 1>

[0056] Figure 1 The cross-sectional view of the washing and drying machine 1 according to the first embodiment of the present invention as seen from the side is shown.

[0057] The outer shell of the washing and drying machine 1 according to the first embodiment is formed by a housing 2 .

[0058] A door 2a is installed at the front opening of the housing 2 of the washing and drying machine 1 so as to be opened and closed when taking out or putting in laundry.

[0059] Figure 2 A schematic front view of the outer tub 3 and the first and second air duct filters 6a and 6b of the washing and drying machine 1 according to the first embodiment is shown.

[0060] The washing and drying machine 1 internally includes an outer tub 3, an inner tub 4, an air supply device 5, a first air path filter 6a, a second air path filter 6b, a drainage path 7, a circulation pump 8, and a circulation water path (not shown).

[0061] The outer barrel 3 is a water storage barrel that stores water inside.

[0062] The inner tub 4 is rotatably disposed around a rotation axis 4a inside the outer tub 3. The inner tub 4 has a substantially bottomed cylindrical shape, and a plurality of small holes are provided on the peripheral wall.

[0063] The inner drum 4 is placed with laundry such as clothes, and rotates around the rotation axis 4a at a low speed or a high speed during each step of washing, rinsing, dehydrating and drying.

[0064] The air supply device 5 generates air during the drying process. Figure 1 The circulating air indicated by the dotted arrows dries the laundry.

[0065] The drainage channel 7 is a path for draining water from the outer tub 3 .

[0066] <Air supply device 5>

[0067] The air supply device 5 includes an air blower 5a, a heater 5b, an air outlet 5c, a circulating air path 5d, and an air path hose 5e. The air blower 5a is an air supply source during the drying process. The heater 5b heats the dry air containing moisture in the laundry to remove the moisture. The air outlet 5c blows the high-temperature dry air that has passed through the heater 5b to the laundry in the inner tub 4.

[0068] like Figure 1 As shown by the dotted arrow, the air blown out from the blower 5a is heated by the downstream heater 5b and then supplied to the inner tub 4 through the air outlet 5c.

[0069] The wind supplied to the inner drum 4 heats the wet laundry contained in the inner drum 4 to remove moisture, flows out through the small holes in the inner drum 4 to the space between the inner drum 4 and the outer drum 3, and then passes through the first air path filter 6a which is a mesh filter to reach the circulating air path 5d.

[0070] The wind flowing into the circulation air passage 5d takes away moisture from the laundry in the inner tub 4, thereby increasing the humidity. Therefore, in order to remove the moisture in the wind, a heat source is supplied from the upper part of the circulation air passage 5d. Figure 1 The cooling water is shown by the solid arrow in FIG.

[0071] The high-humidity wind is cooled to a low temperature, and water vapor is condensed to dehumidify the high-humidity wind. The dehumidified dry wind returns to the blower 5a through the air duct hose 5e.

[0072] Through the above process, the air supply device 5 supplies high-temperature dry air to the wet laundry in the inner drum 4 by driving the air blower 5a, thereby promoting the drying of the laundry.

[0073] <First Air Path Filter 6a, Second Air Path Filter 6b>

[0074] like Figure 1 , Figure 2 As shown, the first air passage filter 6a is disposed on the back side of the outer tub 3. The first air passage filter 6a collects lint r1 generated from the laundry during drying.

[0075] The second air duct filter 6b has a finer mesh and a smaller area than the first air duct filter 6a. The second air duct filter 6b is arranged downstream of the air flow of the first air duct filter 6a. The second air duct filter 6b is arranged downstream of the air duct hose 5e of the circulating air duct 5d. The second air duct filter 6b captures finer lint r1 that cannot be captured by the first air duct filter 6a. The second air duct filter 6b can capture finer lint r1 with high density and effectively by having a smaller area than the first air duct filter 6a.

[0076] <Drainage channel 7>

[0077] Figure 1 The drain passage 7 shown is a path for draining water accumulated in the outer tub 3 .

[0078] The drainage channel 7 includes an internal drainage channel 7a, a water channel filter 7b, a drainage valve 7c, and a drainage hose 7d.

[0079] The internal drainage passage 7 a communicates with the bottom opening 3 a of the outer tub 3 .

[0080] The water channel filter 7b collects lint r1 (lint) in the drainage flowing through the internal drainage channel 7a. The lint r1 collected by the water channel filter 7b is cleaned appropriately by the user.

[0081] The drain valve 7c is mainly closed during the washing process and the rinsing process, and is opened during other processes.

[0082] The drain hose 7d allows drainage to pass when the drain valve 7c is opened.

[0083] The circulation pump 8 is provided on the downstream side of the water path filter 7b. The circulation pump 8 circulates the drain water to the outer tub 3 via the circulation water path (not shown) during the washing process and the rinsing process.

[0084] exist Figure 2 In the washing and drying machine 1 shown, the air blower 5 a is arranged above the outer tub 3 .

[0085] Therefore, the circulation air passage 5 d from the outer tub 3 to the blower 5 a is arranged below the blower 5 a and on the rear side of the outer tub 3 so as to connect the two with the shortest distance.

[0086] In order to reduce ventilation resistance from the outer tub 3 to the blower 5a and increase the amount of circulating air in the washing and drying machine 1, a large and long air inlet 6k is provided on the back of the outer tub 3. The air inlet 3a is covered by a large first air path filter 6a.

[0087] The first air duct filter 6a is arranged above the waterline k1. The waterline k1 refers to the highest water level during the washing process and the rinsing process. In other words, it refers to the highest water level in the outer tub 3 (the waterline is the highest water level during the washing operation, the rinsing operation, and the filter cleaning).

[0088] Hereinafter, the reason for determining the position of the first air duct filter 6a will be described using the following comparative example.

[0089] <Comparative Example (Prior Art)>

[0090] Figure 3A to Figure 3D The washing process of the first operation of the comparative example (prior art) is shown. Figure 3A )、Rinse process( Figure 3B )、Dehydration( Figure 3C )、Drying process( Figure 3D ) is a front schematic diagram of the state of the outer barrel 103 and the air duct filter 106a inside it.

[0091] like Figure 3A As shown, the air duct filter 106a of the comparative example (conventional technology) is arranged on the back side of the outer tub 103 so as to be submerged in the waterline k101.

[0092] The air path filter 106a is washed ( Figure 3A ),rinsing( Figure 3B )、Dehydration( Figure 3C ) in each process, lint r1 is hardly attached to the air duct filter 106a.

[0093] exist Figure 3D In the drying step shown, since the laundry is exposed to the dry air while being shaken, lint r1 adheres to the air path filter 106a.

[0094] Figure 4A to Figure 4E The washing process in the second operation of the comparative example (prior art) is shown ( Figure 4A )、Rinse process( Figure 4B )、Filter cleaning( Figure 4C )、Dehydration( Figure 4D )、Drying process( Figure 4E ) is a front schematic diagram of the state of the outer barrel 103 and the air duct filter 106a inside it.

[0095] In the second operation, the lint r1 is attached to the air path filter 106a. Figure 4A , Figure 4B The washing process and rinsing process are shown.

[0096] Washing process ( Figure 4A ) Since the rotation speed of the inner barrel 4 is low, water is not applied to the air path filter 106a. However, the air path filter 106a located below the waterline k101 is submerged in water, so the mechanical force is weak and the lint r1 attached to the air path filter 106a does not fall off.

[0097] In the rinsing process ( Figure 4A ), since the rotation speed of the inner barrel 4 is low, the downwind filter portion 106a1, which is located below the waterline k101 where water is not applied to the air path filter 106a, is immersed in water, so the mechanical force is weak and the lint r1 attached to the downwind filter portion 106a1 will not fall off.

[0098] In the rinsing process ( Figure 4B ) and then Figure 4C The filter cleaning process is shown.

[0099] In the filter cleaning process ( Figure 4C ) in the washing machine, the inner barrel rotates to increase the rotation speed, rolling up the water for cleaning.

[0100] However, since the downwind filter 106a1 located below the waterline k101 is submerged in water, the mechanical force is weak, and the lint r1 attached to the downwind filter 106a1 is difficult to fall off.

[0101] After that, in the dehydration process ( Figure 4D ), the upwind filter section 106a2 located above the waterline k101 is cleaned well, but some lint r1 remains in the downwind filter section 106a1 located below the waterline k101.

[0102] In the drying process ( Figure 4E ) in the embodiment of the present invention, the downwind filter section 106a1 located below the waterline k101 is submerged in water, so the lint r1 attached to the downwind filter section 106a1 is accumulated.

[0103] As described above, in the comparative example (conventional technology), although the upper airflow path filter portion 106a2 above the waterline k101 is cleaned, the lower airflow path filter portion 106a1 below the waterline k101 is not cleaned well.

[0104] So, if Figure 2 As shown, the first air duct filter 6a and the second air duct filter 6b of the washing and drying machine 1 of the first embodiment are configured so as not to be submerged in water.

[0105] <Cleaning of the First Air Path Filter 6a>

[0106] Figure 5A An example of a washing process of the washing and drying machine 1 is shown.

[0107] The washing and drying machine 1 performs a washing process in the order of washing, rinsing, cleaning of the first air duct filter 6a, dehydration, and drying.

[0108] During the washing operation and the rinsing operation, the laundry such as clothes is hydrated and the washing is performed at a rotation speed that enables beating washing by lifting the laundry to the upper part of the inner tub 4 and dropping it.

[0109] exist Figure 5A In the cleaning process of the first air duct filter 6a of S13, the water used in rinsing is discharged, new water is supplied, the inner tub 4 is rotated to lift the water stored in the outer tub 3, and applied to the first air duct filter 6a for cleaning. In addition, rinsing water can also be used as the cleaning water in the cleaning process.

[0110] The cleaning process of the first air path filter 6a in S13 is performed by rotating the inner tub 4 at a rotation speed that stirs up water. The speed is increased to, for example, 350 rpm, and the water in the outer tub 3 is stirred up by the rotation of the inner tub 4 and applied to the first air path filter 6a for cleaning.

[0111] Figure 5B Another example 1 of the washing process of the washing and drying machine 1 is shown.

[0112] As another example 1 of the washing of the washing and drying machine 1, according to the first cleaning of the first air path filter 6a ( Figure 5B S21), washing, rinsing, and a second cleaning of the first air path filter 6a ( Figure 5B The washing is carried out in the order of S24), dehydration and drying steps.

[0113] exist Figure 5BIn the first cleaning process of the first air path filter 6a of S21, new water is supplied to rotate the inner tub 4, and the water stored in the outer tub 3 is lifted and applied to the first air path filter 6a for cleaning. Thus, the lint r1 attached to the first air path filter 6a can be removed with clean water at the beginning of washing.

[0114] During the washing operation and the rinsing operation, the rotation speed is set to enable washing by hydrating the laundry such as clothes and lifting the laundry to the upper part of the inner tub 4 and dropping the laundry.

[0115] exist Figure 5B In the second cleaning process of the first air duct filter 6a of S24, the water used in rinsing is discharged, new water is supplied, the inner barrel 4 is rotated, the water stored in the outer barrel 3 is raised, and applied to the first air duct filter 6a for cleaning. In addition, rinsing water can also be used as cleaning water.

[0116] In another example 2, since the cleaning step of the first air duct filter 6a is performed twice, the lint r1 adhering to the first air duct filter 6a can be further removed.

[0117] Figure 5C Another example 2 of the washing process of the washing and drying machine 1 is shown.

[0118] As another example 2 of washing the washing and drying machine 1, according to the cleaning of the first air duct filter 6a ( Figure 5C The washing is carried out in the order of S31), washing, rinsing, dehydration and drying steps.

[0119] exist Figure 5C In the cleaning process of the first air duct filter 6a of S31, new water is supplied, the inner tub 4 is rotated, and the water stored in the outer tub 3 is lifted and applied to the first air duct filter 6a for cleaning. In this way, the lint r1 attached to the first air duct filter 6a can be removed at the beginning of washing. The processes after the washing process can be performed with cleaner water.

[0120] The cleaning process of the first air path filter 6a is performed at a rotation speed of the inner tub 4 that rolls up water. The rotation speed is increased to, for example, 350 rpm to roll up water to clean the first air path filter 6a.

[0121] According to Embodiment 1, since the first air duct filter 6a and the second air duct filter 6b are arranged above the waterline k1, they are not submerged in water. Therefore, it is possible to suppress the lint r1 generated by the first air duct filter 6a and the second air duct filter 6b being exposed to the washing water from being attached to the first air duct filter 6a and the second air duct filter 6b.

[0122] Thus, the first air duct filter 6a and the second air duct filter 6b are cleaned well, and the attached lint r1 can be removed appropriately.

[0123] According to the above, the lint r1 can be prevented from clogging the first air path filter 6a and the second air path filter 6b for collecting the lint, the durability can be improved, and the reduction of the drying performance can be prevented. In addition, as described in this embodiment, by adopting the structure of providing the first air path filter 6a and the second air path filter 6b, the existing drying filter located at the upper part of the washing and drying machine can be removed. By adopting a washing and drying machine without a drying filter, that is, a washing and drying machine without a drying filter, the trouble of maintenance can be reduced, and the user can conveniently perform maintenance.

[0124] <<Second embodiment>>

[0125] Figure 6 A cross-sectional view showing a washing and drying machine 1A according to a second embodiment of the present invention.

[0126] The washing and drying machine 1A of the second embodiment has a different structure from the air blower 5 and the second air duct filter 6b of the washing and drying machine 1 of the first embodiment. The other structures of the second embodiment are the same as those of the first embodiment, so the same elements are denoted by the same reference numerals and detailed description is omitted.

[0127] <First Air Path Filter 20 and Second Air Path Filter 21>

[0128] Fig. 7A express Figure 6 II cross-sectional view.

[0129] A first air duct filter 20 having a large area is provided at the upper right rear of the back panel 3h of the outer tub 3 of the washing and drying machine 1A. The first air duct filter 20 collects lint r1 (threads) generated from the laundry during the drying process.

[0130] Figure 7B express Figure 6 II-II cross-sectional view.

[0131] A second air duct filter 21 is provided at an inlet hole 22 a of the suction air duct 22 behind the first air duct filter 20 .

[0132] like Fig. 7A As shown, the second air duct filter 21 is disposed on the upper rear side of the first air duct filter 20 .

[0133] The second air duct filter 21 collects finer lint r1 that is not collected by the first air duct filter 20 .

[0134] The area of ​​the second air duct filter 21 is smaller than that of the first air duct filter 20. Thus, finer lint r1 that cannot be captured by the first air duct filter 20 can be densely and effectively captured in a small area.

[0135] A lint drainage path 29e is provided on the bottom plate 25d1 of the duct 25d provided between the first air duct filter 20 and the second air duct filter 21 so as to be connected to the outer tub 3. Washing water after washing the second air duct filter 21 and lint r1 removed from the second air duct filter 21 flow through the lint drainage path 29e.

[0136] The first air duct filter 20 and the second air duct filter 21 are arranged above the waterline k2. The waterline k2 refers to the water level of water accumulated in the outer tub 3 during the cleaning operation of the first air duct filter 20 of the first collection unit. This water level may be different from the water level during the washing operation.

[0137] It is preferred that water does not come into contact with the first air duct filter 20 of the first collection unit during any of the washing operation, the rinsing operation, and the filter cleaning.

[0138] Figure 8 A schematic diagram showing the outer tub 3 and the first air path filter 20 in the outer tub 3 as viewed from the front is shown.

[0139] The first air path filter 20 will not be cleaned when there is no water contact. Figure 3A to Figure 3D , Figure 4A to Figure 4D As shown, it is not cleaned when it is below the waterline k2 and submerged in water.

[0140] The first air passage filter 20 is cleaned with water in the outer tub 3 to remove lint r1 attached to the first air passage filter 20 .

[0141] In the cleaning of the first air path filter 20, the inner tub 4 (see Figure 6 ) rotates, rolling up the water stored in the outer barrel 3 and applying it to the first air duct filter 20 for cleaning.

[0142] In addition, as shown in the above comparative example, the air duct filter is difficult to be cleaned under the water surface. In addition, if water does not contact the air duct filter, it will not be cleaned.

[0143] Water is supplied from above to the second air passage filter 21, and the second air passage filter 21 is cleaned to remove the lint r1.

[0144] The washing and drying machine 1A of the second embodiment adopts a heat pump device 1H (see Figure 6 ) as a drying mechanism in the air supply device 5.

[0145] Fig. 9A schematic diagram showing the structure of a heat pump device 1H according to a second embodiment.

[0146] <Heat pump device 1H>

[0147] The structure and operation of the heat pump device 1H will be described.

[0148] Fig. 9 The heat pump device 1H shown includes a compressor 12, a heat exchanger for radiating heat to air (condenser 13), a pressure reducing device 14 (expansion valve etc.), and a heat exchanger for dehumidifying air (evaporator 15).

[0149] The heat pump device 1H sequentially connects the above-mentioned devices (12, 13, 14, 15) via a refrigerant pipe 16k and is housed in a resin casing 18. The structure in which the devices (12, 13, 14, 15) are sequentially connected via the refrigerant pipe 16k is referred to as a refrigerant circuit 16.

[0150] A refrigerant is sealed in the refrigerant circuit 16 , and as the refrigerant, for example, HFC single refrigerant, HFC mixed refrigerant, HFO-1234yf, HFO-1234ze, natural refrigerant (for example, CO 2 refrigerant) or the like is used.

[0151] The refrigerant flows through the compressor 12 , the condenser 13 , the decompression device 14 , and the evaporator 15 in sequence in the direction indicated by the arrow α1 in FIG. 7 , and returns to the compressor 12 again.

[0152] The evaporator 15 and the condenser 13 constituting the heat pump device 1H perform heat exchange with air, and therefore a cross-fin-tube heat exchanger in which a heat transfer pipe is attached to stacked aluminum fins is often used. Hereinafter, the condenser 13 and the evaporator 15 are collectively referred to as a heat exchanger.

[0153] Figure 6 The housing 18 of the heat pump device 1H shown can be separated into a lower housing 18a and an upper housing 18b. The heat exchanger (evaporator 15, condenser 13) is provided between the upper housing 18b and the lower housing 18a to block the air flowing laterally and form a circulation path for the air.

[0154] The compressor 12 is installed in the lower housing 18a via vibration-proof rubber or the like. Figure 6 In the figure, the compressor 12 is not shown.

[0155] The refrigerant pipe 16 k is connected to the condenser 3 for heat dissipation and the evaporator 4 for dehumidification in a serpentine state in order to prevent breakage due to propagation of the rotational vibration of the compressor 12 .

[0156] The compressor 12 may be a piston type, a rotary type, a scroll type, or the like. The compressor 12 is variable in rotation speed from a low speed to a high speed by inverter control.

[0157] If the refrigerant returns to the compressor 12 in liquid phase, reliability may be reduced due to poor lubrication of the sliding surface of the compressor 12. To suppress this, an accumulator (not shown) may be provided on the refrigerant suction side of the compressor 12.

[0158] The high-temperature and high-pressure gas refrigerant discharged from the compressor 12 flows to the condenser 3, and is condensed and liquefied by dissipating heat to the circulating air, becoming a low-temperature and high-pressure refrigerant. The liquefied refrigerant is decompressed by the expansion valve (decompression device 14) adjusted to a specified opening, becomes a low-temperature and low-pressure gas-liquid two-phase state, and flows into the evaporator 15. It evaporates and vaporizes by absorbing heat from the circulating air. The vaporized refrigerant becomes a medium-temperature and high-pressure refrigerant and is sucked into the compressor 12. The medium-temperature and low-pressure refrigerant is compressed again by the compressor 12 to become a high-temperature and high-pressure gas refrigerant. In this way, the heat pump device 1H is formed.

[0159] like Figure 6 As shown, the heat pump device 1H is arranged on a base 15b at the rear of the box body 2 at the lower part of the outer barrel 3. The circulating air passes through the first air path filter 20 from the inner barrel 4 and is discharged through the air intake port 22a. The exhausted air flows into the heat pump device 1H from the upper part to the lower part of the outer barrel 3 through the suction air path 22. In the heat pump device 1H, the circulating air dehumidified by the evaporator 15 and heated by the condenser 13 is blown out through the air supply device 23, and is blown into the inner barrel 4 through the exhaust air path 24 and the duct 24a from the lower part to the upper part of the outer barrel 3 using the blowing port 5c arranged at the upper front part of the outer barrel 3.

[0160] The evaporator 15 constituting the heat pump device 1H dehumidifies the high-humidity air containing water evaporated from the laundry in the inner drum 4. In the condenser 13, the heat absorbed by the evaporator 15 and the heat of the compressor 12 are dissipated to the circulating air.

[0161] Important points for drying laundry are shown below.

[0162] Blow high-speed air toward the laundry. (Air supply device 23)

[0163] Blowing dry air to the laundry (dehumidification by evaporator 15)

[0164] ·Increase the temperature of water contained in the laundry. (Heating by condenser 13 and compressor 12)

[0165] Since the heating source of the heat pump device 1H is air, heating of the air is important.

[0166] As described above, the refrigeration cycle constituting the heat pump device 1H functions to dehumidify and heat the circulating air.

[0167] Lint (lint r1) generated from laundry during washing and drying is collected by the mesh of the first air duct filter 20. However, it is difficult to remove all of the lint r1 in the first air duct filter 20.

[0168] The fine lint r1 that has passed through the first air duct filter 20 is collected by the second air duct filter 21 located behind it.

[0169] <First Air Path Filter 20, Second Air Path Filter 21>

[0170] The first air passage filter 20 and the second air passage filter 21 are formed by sewing a plurality of resin threads (resin thin wires) or iron threads (iron thin wires) into a mesh shape so as to form a ventilation portion.

[0171] The intersections of the resin threads (resin thin wires) or iron threads (iron thin wires) of the first air duct filter 20 and the second air duct filter 21 are processed so as to prevent or reduce the gaps described below.

[0172] Fig.10 express Fig. 7A Enlarged view of Part III.

[0173] Fig.11 Comparative Example (Prior Art) Fig.10 The IV-IV section corresponds to the enlarged view.

[0174] In the conventional air duct filter 120 , thin wires 120 a and 120 b made of metal or resin are formed in a lattice shape.

[0175] Therefore, a groove portion (gap) 120m is formed at an intersection 120c of the thin wire 120a and the thin wire 120b.

[0176] When cleaning the air duct filter 120, the inner tub is rotated to stir the water in the outer tub, and water is applied to clean the air duct filter 120. As a result, the lint r1 attached to the air duct filter 120 may be hooked on the groove portion (gap) 120m of the intersection portion 120c, and the lint r1 cannot be removed from the air duct filter 120.

[0177] Therefore, in the second embodiment, the following Fig.12 , Fig.13 The structure shown.

[0178] Fig.12 Example 1 of the second embodiment Fig. 9 Enlarged view of section IV-IV.

[0179] In the first air path filter 20 of Example 1, the mesh filter of the first air path filter 20 is flattened (calendered) ( Fig.11 As shown in the hollow arrow F), the concavo-convexity of the intersection 20c is reduced. In this way, the groove (gap) 20m of the intersection 20c is made smaller and has an obtuse angle. Thus, the lint r1 is prevented from being caught in the groove (gap) 20m of the first air duct filter 20.

[0180] Fig.13 Example 2 of the second embodiment Fig. 9 Enlarged view of section IV-IV.

[0181] In the first air path filter 20A of Example 2, a structure is used in which the thin wires (filaments) 20e and 20f have a fusion layer 20u on one side or both sides thereof, and are fused (melted) by annealing treatment or the like. Thus, the groove (gap) 20m1 of the intersection 20g is reduced. Thus, the lint r1 is prevented from being caught in the groove (gap) 20m1 of the first air path filter 20A.

[0182] As a method of Example 3, the first air path filter 20 is subjected to a surface treatment of fluorine processing, silicon processing, or SUS sputtering to make it difficult for the lint r1 to adhere.

[0183] In addition, the methods of Examples 1 to 3 can also be applied to the second air duct filter 21 .

[0184] According to the second embodiment, the lint r1 generated by the first air duct filter 20 and the second air duct filter 21 being exposed to the washing water can be suppressed from being fixed to the first air duct filter 20 and the second air duct filter 21. The lint clogging of the first air duct filter 20 and the second air duct filter 21 for collecting lint can be suppressed, the durability is improved, and the reduction of the drying performance can be suppressed. In addition, as in this embodiment, by adopting a structure in which the first air duct filter 6a and the second air duct filter 6b are provided, the drying filter located at the upper part of the existing washing and drying machine can be removed. By forming a washing machine without a drying filter, that is, a washing machine without a drying filter, the trouble of maintenance can be reduced, and the user can conveniently perform maintenance.

[0185] <<Third Embodiment>>

[0186] Fig.14 A cross-sectional view of a washing and drying machine 1B according to a third embodiment of the present invention is shown as viewed from the side.

[0187] The washing and drying machine 1B of the third embodiment is configured by removing the lint drainage path 29e of the washing and drying machine 1A of the second embodiment. The other configurations of the third embodiment are the same as those of the second embodiment, and thus the same components are denoted by the same reference numerals and detailed descriptions thereof are omitted.

[0188] The washing and drying machine 1B of the third embodiment reduces the thickness t of the duct 25d provided on the back side of the outer tub 3 to increase the pressure loss of the air flow, and eliminates the lint drainage path 29e of the second embodiment.

[0189] The first air duct filter 20A has an open through portion 20a1 at its lower portion, so that the lint r1 removed from the second air duct filter 21 flows through the through portion 20a1 together with the washing water and flows into the outer tub 3 .

[0190] In the drying process of the washing and drying machine 1B of the third embodiment, the air passage behind the outer tub 3 includes a first air passage f1 and a second air passage f2 described below.

[0191] The first air passage f1 is an air passage extending from the first air passage filter 20A through the second air passage filter 21 .

[0192] The second air passage f2 enters from the through-hole 20a1 below the first air passage filter 20A and advances upward between the first air passage filter 20A and the rear plate 25d2 of the duct 25d.

[0193] Here, if the dry wind hardly flows into the second air passage f2, the water that washes the second air passage filter 21 and the lint r1 removed from the second air passage filter 21 do not flow upward along the second air passage f2. In addition, when the water that washes the second air passage filter 21 and the lint r1 removed from the second air passage filter 21 flow upward along the second air passage f2, the water that washes the second air passage filter 21 and the lint r1 removed from the second air passage filter 21 return to the second air passage filter 21.

[0194] Fig.15 The flow velocity distribution of the dry air in the duct 25d of the washing and drying machine according to the third embodiment is shown when the thickness t of the duct 25d is 17 mm. Fig.15 In the figure, the flow velocity distribution (m / s) is represented by light and dark, and is represented by 0.00 (m / s) (white) to 12.0 (m / s) (black).

[0195] from Fig.15 It was confirmed that the flow velocity of the dry air was low and the dry air hardly flowed in the second air passage f2.

[0196] According to this result, the water used to clean the second air duct filter 21 and the lint r1 removed from the second air duct filter 21 do not return to the second air duct filter 21 .

[0197] According to the washing and drying machine 1B of the third embodiment, by reducing the thickness t of the duct 25d provided on the back side of the outer tub 3, the pressure loss of the air flow can be increased, and the lint drainage path 29e (see Figure 6 ). Therefore, the structure of the washing and drying machine 1B (see FIG. 3 ) can be simplified and the cost can be reduced.

[0198] <<Fourth embodiment>>

[0199] The fourth embodiment of the washing and drying machine of the present invention is described below using the accompanying drawings. In addition, as a specific structure of the washing and drying machine, a drum-type washing and drying machine in which the rotating axis of the inner drum is approximately horizontal is exemplified below, but the same effect can be obtained even if the present invention is applied to a vertical washing and drying machine in which the rotating axis of the inner drum is approximately vertical.

[0200] <Washing and Drying Machine 1C>

[0201] Fig.16 A schematic cross-sectional view of a washing and drying machine 1C according to a fourth embodiment of the present invention is shown as viewed from the side.

[0202] The outer shell of the washing and drying machine 1C according to the embodiment is formed by a housing 2 .

[0203] The front surface of the housing 2 of the washing and drying machine 1C is opened, and a door 2a that can be opened and closed when taking out and putting in laundry is installed.

[0204] The washing and drying machine 1C has an outer tub 3, an inner tub 4, an air supply device 23, a first air path filter 6a, a second air path filter 9, a drainage path (not shown), a circulation pump (not shown) and a circulating water path (not shown). In addition, the first air path filter 6a and the second air path filter 9 are filters for collecting lint generated during drying, but have different functions as described later. In addition, as described later, the second air path filter 9 is cleaned by the cleaning unit 10.

[0205] The outer tub 3 stores washing water, rinsing water, etc. inside.

[0206] The inner tub 4 is rotatably disposed around a rotation axis 4a inside the outer tub 3. The inner tub 4 has a substantially bottomed cylindrical shape, and a plurality of small holes are provided on the peripheral wall.

[0207] When laundry such as clothes is placed in the inner drum 4, the inner drum 4 rotates at a low speed around the rotating shaft 4a during the washing, rinsing and drying processes, and rotates at a high speed around the rotating shaft 4a during the dehydration process.

[0208] The air supply device generates Fig.16 The circulating air indicated by the double-dotted arrows dries the laundry.

[0209] The drainage passage (not shown) is a passage for draining water from the outer tub 3 .

[0210] <First Air Path Filter 6a and 2A Air Path Filter 9>

[0211] A first air duct filter 6a having a large area is provided at the upper right rear of the back panel 3h of the outer tub 3 of the washing and drying machine 1C. The first air duct filter 6a collects lint (threads) generated from the laundry during the drying process.

[0212] A second A air passage filter 9 is provided at the inlet hole 22a of the intake air passage 22 behind the first air passage filter 6a.

[0213] The 2A air duct filter 9 is provided on the upper rear side of the first air duct filter 6a.

[0214] The 2A air duct filter 9 collects finer lint that is not collected by the first air duct filter 6 a .

[0215] The area of ​​the 2A air duct filter 9 is smaller than the area of ​​the first air duct filter 6a.

[0216] A lint drainage path 29e is provided on the bottom plate 25d1 of the duct 25d provided between the first air duct filter 6a and the 2A air duct filter 9 in a shape connected to the outer tub 3. Washing water after washing the 2A air duct filter 9 and lint removed from the 2A air duct filter 9 flow through the lint drainage path 29e.

[0217] Lint (lint) generated from laundry during washing and drying is collected by the mesh of first air duct filter 6a. However, it is difficult to remove all the lint in first air duct filter 6a.

[0218] The fine lint that has passed through the first air passage filter 6 a is collected by the second A air passage filter 9 located behind.

[0219] A cleaning unit 10 for cleaning 2A air duct filter 9 is provided above 2A air duct filter 9 .

[0220] Washing and drying machine 1C uses heat pump device 1H (refer to Fig.17 ) as a drying mechanism for laundry.

[0221] Fig.17 It is a schematic diagram showing the structure of a heat pump device 1H according to a fourth embodiment.

[0222] <Heat pump device 1H>

[0223] The structure and operation of the heat pump device 1H will be described.

[0224] Fig.17 The heat pump device 1H shown includes a compressor 12, a heat exchanger for radiating heat to air (condenser 13 (heating device)), a pressure reducing device 14 (expansion valve, etc.), and a heat exchanger for dehumidifying air (evaporator 15 (dehumidifying device)).

[0225] The heat pump device 1H is a device that connects the above-mentioned devices (12, 13, 14, 15) in sequence through a refrigerant pipe 16k and is housed in a resin casing 18 (see Fig.16 ) The circuit formed by sequentially connecting the devices (12, 13, 14, 15) using the refrigerant piping 16k is referred to as a refrigerant circuit 16.

[0226] A refrigerant is sealed in the refrigerant circuit 16 , and as the refrigerant, for example, HFC single refrigerant, HFC mixed refrigerant, HFO-1234yf, HFO-1234ze, natural refrigerant (for example, CO 2 refrigerant) or the like is used.

[0227] Refrigerant in Fig.17 The liquid flows in the direction indicated by the arrow α1 through the compressor 12, the condenser 13, the pressure reducing device 14, and the evaporator 15 in sequence, and returns to the compressor 12 again.

[0228] The evaporator 15 and the condenser 13 constituting the heat pump device 1H perform heat exchange with air, and therefore a cross-fin-tube heat exchanger in which a heat transfer pipe is attached to stacked aluminum fins is often used. Hereinafter, the condenser 13 and the evaporator 15 are collectively referred to as a heat exchanger.

[0229] Fig.16 The housing 18 of the heat pump device 1H shown can be separated into a lower housing 18a and an upper housing 18b. The heat exchanger (evaporator 15, condenser 13) is provided in a manner sandwiched between the upper housing 18b and the lower housing 18a to perform heat exchange with the air flowing laterally to form an air circulation path.

[0230] The compressor 12 is installed in the lower housing 18a via vibration-proof rubber or the like. Fig.16 In the figure, the compressor 12 is not shown.

[0231] The refrigerant pipe 16 k is connected to the condenser 13 for heat dissipation and the evaporator 15 for dehumidification in a serpentine state in order to prevent breakage due to propagation of rotational vibration of the compressor 12 .

[0232] The compressor 12 may be a piston type, a rotary type, a scroll type, or the like. The rotation speed of the compressor 12 is variable from a low speed to a high speed by inverter control.

[0233] If the refrigerant returns to the compressor 12 in liquid phase, reliability may be reduced due to poor lubrication of the sliding surface of the compressor 12. To suppress this, an accumulator (not shown) may be provided on the refrigerant suction side of the compressor 12.

[0234] The high-temperature and high-pressure gas refrigerant discharged from the compressor 12 flows into the condenser 13, condenses and liquefies by dissipating heat to the circulating air, and becomes a low-temperature and high-pressure refrigerant. The liquefied refrigerant is decompressed by the expansion valve (decompression device 14) adjusted to a specified opening, becomes a low-temperature and low-pressure gas-liquid two-phase state, and flows into the evaporator 15. The refrigerant evaporates and vaporizes by absorbing heat from the circulating air. The vaporized refrigerant becomes a medium-temperature and low-pressure refrigerant and is sucked into the compressor 12. The medium-temperature and low-pressure refrigerant is compressed again by the compressor 12 to become a high-temperature and high-pressure gas refrigerant. In this way, the heat pump device 1H is formed.

[0235] like Fig.16 As shown, the heat pump device 1H is arranged on a base 15b at the rear of the box body 2 at the lower part of the outer barrel 3. The circulating air passes through the first air path filter 6a from the inner barrel 4 and is discharged through the air intake port 6. The exhausted air flows into the heat pump device 1H from the upper part to the lower part of the outer barrel 3 through the suction air path 22. In the heat pump device 1H, the circulating air dehumidified by the evaporator 15 and heated by the condenser 13 is blown out from the air supply device 23, through the exhaust air path 24 and the duct 24a from the lower part to the upper part of the outer barrel 3, and is blown into the inner barrel 4 through the blowing port 5c arranged at the upper front part of the outer barrel 3.

[0236] <Cleaning Structure of 2A Air Path Filter 9>

[0237] Fig.18 express Fig.16 An enlarged schematic diagram of the V portion of FIG.

[0238] The 2A air duct filter 9 has an inclination angle θ with respect to the horizontal plane S in the suction air duct 22. The inclination angle θ is preferably in the range of 55 degrees ± 20 degrees.

[0239] When θ<35 degrees, the inclination angle θ of 2A air duct filter 9 is small, and a phenomenon occurs in which washing water after washing 2A air duct filter 9 enters into suction air duct 22 .

[0240] When 55 degrees < θ, the inclination angle θ of 2A air duct filter 9 is too large, and the washing water falls from 2A air duct filter 9 without removing the lint attached to 2A air duct filter 9 .

[0241] Fig.19 The figure shows a perspective view of the 2A air duct filter 9 and the cleaning portion 10 as viewed from the upper left front obliquely.

[0242] Fig. 20 express Fig.19 VII-VII cross-section diagram.

[0243] The washing unit 10 includes a water supply unit 17 , a water storage unit 38 , a resistance flow path unit 19 , a water discharge unit 30 , and a water guide unit 31 .

[0244] Water supply unit 17 supplies washing water for removing lint attached to 2A air duct filter 9 .

[0245] The water storage part 38 stores the supplied washing water. The water supply part 17 is arranged at a position lower than the water storage height 38h of the water storage part 38. Thus, the washing water overflowing from the water storage part 38 can be used as the washing water.

[0246] The resistance flow path portion 19 forms a resistance flow path of the water storage portion 38 .

[0247] like Fig.18 , Fig. 20 As shown, the resistance flow path section 19 includes a lower flow path plate 19a, an upper flow path plate 19b, and an opening 19c, which is an opening between the lower flow path plate 19a and the upper flow path plate 19b. The resistance flow path section 19 limits the amount of water discharged from the opening 19c to less than a predetermined amount by limiting the opening 19c by the lower flow path plate 19a and the upper flow path plate 19b. Thus, the pressure of the washing water can be limited to a predetermined pressure.

[0248] The resistance flow path portion 19 allows the washing water stored in the water storage portion 38 to overflow from the lower flow path plate 19 a and flow out, thereby allowing the washing water to flow to the drain portion 30 .

[0249] The drain unit 30 is a portion that directly supplies washing water to the second A air duct filter 9 .

[0250] The water guide 31 guides the washing water so that it contacts the washing water contact portion 21a above the 2A air path filter 9. By providing the water guide 31, the washing water does not directly contact the 2A air path filter 9, and the washing water flows on the 2A air path filter 9 after contacting the washing water contact portion 21a above the 2A air path filter 9.

[0251] The reason for this is that, when the washing water directly contacts the 2A air path filter 9, the washing water may penetrate the 2A air path filter 9 due to the water pressure and flow to the side of the suction air path 22. By providing the water guide 31, the washing water does not directly contact the 2A air path filter 9, and the washing water naturally falls onto the 2A air path filter 9 below after contacting the washing water contact portion 21a and flows. As a result, the water pressure of the washing water after contacting the washing water contact portion 21a is low, and the phenomenon of the washing water passing through the 2A air path filter 9 and flowing to the suction air path 22 can be suppressed.

[0252] <Water storage unit 38>

[0253] Fig.21A express Fig.16 The water storage portion 38 is shown in an enlarged view as viewed in the direction VI.

[0254] Fig.21Bexpress Fig.21A VIII-VIII cross-sectional view of .

[0255] The water storage portion 38 has a first bottom surface 38a1 and a second bottom surface 38a2 as the bottom surface 38a.

[0256] A first drainage hole 19b1 is formed at the lowermost portion of the first bottom surface 38a1.

[0257] A second drainage hole 19b2 is formed at the lowermost portion of the second bottom surface 38a2.

[0258] The first bottom surface 38a1 is inclined so that the first drain hole 19b1 is the lowest position around the first drain hole 19b1 of the water storage section 38 (inclined downward toward the hole (first drain hole 19b1)). Therefore, the washing water remaining in the water storage section 38 flows toward the first drain hole 19b1 ( Fig.21B The water is drained from the first drainage hole 19b1 (arrow β11).

[0259] The second bottom surface 38a2 is inclined in such a manner that the second drainage hole 19b2 is the lowest position around the second drainage hole 19b2 of the water storage section 38 (inclined downward toward the hole (second drainage hole 19b2)). Therefore, the washing water remaining in the water storage section 38 flows toward the second drainage hole 19b2 ( Fig.21B The water is drained from the second drainage hole 19b2 (arrow β12).

[0260] In addition, when either the first drain hole 19 b 1 or the second drain hole 19 b 2 is provided, the drain hole is inclined so that one drain hole is located at the lowermost position of the water storage portion 38 (inclined downward toward the hole portion).

[0261] Thus, the water remaining in the water storage portion 38 after cleaning the 2A air path filter 9 can be discharged from the first drainage holes 19b1 and the second drainage holes 19b2. Therefore, it is possible to suppress the water remaining in the water storage portion 38 from being corrupted and releasing a bad smell.

[0262] Here, the amount of wash water supplied from the water supply unit 17 and the opening 19c (see Fig. 20 ) and the residual water discharge amount of the cleaning water from the first and second drainage holes 19b1 and 19b2 have the following relationship.

[0263] First, the relationship of water supply amount from the water supply section 17 ≥ water discharge amount from the opening 19c of the resistance flow path section 19 > residual water discharge amount from the first and second small discharge holes 19b1 and 19b2 holds.

[0264] Second, the amount of water discharged from the opening 19c of the resistance flow path 19 needs to be much greater than the amount of residual water discharged from the first and second drainage holes 19b1 and 19b2. For example, the amount of water discharged from the opening 19c of the resistance flow path 19 is more than 10 times the amount of residual water discharged from the first and second drainage holes 19b1 and 19b2.

[0265] <Cleaning of 2A Air Path Filter 9>

[0266] The cleaning of the 2A air passage filter 9 is performed as follows.

[0267] like Fig.18 , Fig. 20 As shown, washing water is supplied from the water supply unit 17 to the water storage unit 38 ( Fig.18 , Fig. 20 As a result, the washing water is stored in the water storage section 38. As time passes, the washing water overflowing from the water storage section 38 flows out from the opening 19c of the resistance flow path section 19 to the water discharge section 30 ( Fig.18 , Fig. 20 By using the washing water overflowing from the water storage unit 38 to wash the 2A air duct filter 9, the water pressure of the washing water can be made constant.

[0268] like Fig.18 , Fig. 20 As shown by arrow α13, the washing water from the water discharge portion 30 flows to the water guide portion 31, is guided by the water guide portion 31, and contacts the washing water contact portion 21a. The washing water contacting the water guide portion 31 removes the lint attached to the 2A air path filter 9 from the upper portion 9a of the 2A air path filter 9, and flows to the lower portion 9b of the 2A air path filter 9 ( Fig.18 , Fig. 20 α14).

[0269] According to the washing and drying machine 1C of the fourth embodiment, in the cleaning unit 10 (see Fig.18 ) has a water supply section 17, a water storage section 38, a water discharge section 30, and a water guide section 31, thereby enabling the 2A air duct filter 9 to be effectively cleaned regardless of the water pressure conditions of each user's residence.

[0270] <<Other Implementation Methods>>

[0271] 1. The present invention is not limited to the above-mentioned embodiments and modified examples, and various modifications and specific embodiments can be implemented within the scope of protection.

[0272] Description of Reference Numerals

[0273] 1. 1A, 1B, 1C washing and drying machine

[0274] 2 Cabinet

[0275] 3 outer barrel

[0276] 4 inner barrel

[0277] 5a Blower (air supply unit)

[0278] 5d circulation air path (air path)

[0279] 5e air hose (air path)

[0280] 6a, 20 first air path filter (first collection part, collection part)

[0281] 6b, 21 second air path filter (second collection unit, collection unit)

[0282] 9 No. 2A air duct filter (filter)

[0283] 10. Cleaning Department

[0284] 13. Condenser (heating device)

[0285] 15 Evaporator (dehumidification device)

[0286] 17 Water Supply Department

[0287] 18 Shell (circulating air path)

[0288] 19 resistance flow path portion (resistance flow path)

[0289] 19b1 First drainage hole (hole part)

[0290] 19b2 ​​Second drainage hole (hole part)

[0291] 20a1 Through hole (water hole)

[0292] 20e, 20f thin wire (weld wire)

[0293] 21a: Washing water contact portion (contact portion, portion above the filter)

[0294] 22 Intake air path (circulation air path)

[0295] 23 Air supply device

[0296] 25d pipeline (circulation air path)

[0297] 30 Water Release Department

[0298] 38 Water Storage

[0299] 38h water storage height

[0300] f1 first air path (first flow path)

[0301] f2 Second air path (second flow path)

[0302] k1 waterline

[0303] r1 lint

[0304] S horizontal plane (horizontal plane on the downstream side of air flow)

[0305] θ is the tilt angle.

Claims

1. A washing and drying machine, characterized in that: include: An outer barrel for storing water; A rotatable inner drum for storing laundry; an air supply unit for supplying air to the outer barrel and the inner barrel; An air passage connecting the outer barrel and the air supply unit; and a first collecting portion disposed between the outer barrel and the air passage for collecting lint; The lowermost end portion of the first collecting portion is disposed above a waterline which is a water level of the outer tub.

2. The washing and drying machine according to claim 1, characterized in that: A second collecting section is provided downstream of the drying air of the first collecting section, The second collecting portion is provided at a position above the waterline.

3. The washing and drying machine according to claim 2, characterized in that: The second collecting portion has a smaller area than the first collecting portion.

4. The washing and drying machine according to claim 2, characterized in that: The air flow path passing through the first collecting portion and the second collecting portion is divided into a first flow path and a second flow path, and the second flow path has a larger pressure loss than the first flow path.

5. The washing and drying machine according to claim 4, characterized in that: A water through hole is provided at a lower end portion of the first collecting portion facing the second flow path.

6. The washing and drying machine according to any one of claims 2 to 5, characterized in that: The collecting part is composed of a plurality of resin threads or iron threads sewn into a mesh-like shape so as to form a ventilation part. The intersections of the resin wires or iron wires are processed to reduce the gaps.

7. The washing and drying machine according to claim 6, characterized in that: A weld line is provided in at least one of the resin wires or the iron wires sewn into a mesh.

8. The washing and drying machine according to claim 1, characterized in that: The first collecting unit rotates the inner tub between the rinsing step and the dehydration step to agitate water stored in the outer tub for washing.

9. The washing and drying machine according to claim 1, characterized in that: The first collecting part performs cleaning by rotating the inner tub to agitate water stored in the outer tub before the washing process starts.

10. The washing and drying machine according to claim 1, characterized in that: The first collecting part performs cleaning by rotating the inner tub before the start of the washing process and between the rinsing process and the dehydration process to agitate the water stored in the outer tub.

11. The washing and drying machine according to claim 1, characterized in that: The waterline is the highest water level among the water levels during washing operation, rinsing operation, and filter cleaning.

12. A washing and drying machine, characterized in that: include: An outer barrel for storing water; A rotatable inner drum for storing laundry; an air supply unit for supplying air to the outer barrel and the inner barrel; An air passage connecting the outer barrel and the air supply unit; and a first collecting portion disposed between the outer barrel and the air passage for collecting lint; The lowermost end portion of the first collecting portion is disposed above a waterline which is a water level of the outer tub.

13. A washing and drying machine, characterized in that: include: A box body forming an outer contour; An outer barrel for storing water; A rotatable inner drum for storing laundry; Heating and dehumidifying devices for drying damp laundry; an air supply device for supplying air into the inner barrel; A circulating air path connecting the outer barrel and the air supply device; filters to capture lint produced during drying; and cleaning the filter cleaning part, The cleaning part includes a water supply part, a water storage part, and a water discharge part.

14. A washing and drying machine, characterized in that: include: A box body forming an outer contour; An outer barrel for storing water; A rotatable inner drum for storing laundry; Heating and dehumidifying devices for drying damp laundry; an air supply device for supplying air into the inner barrel; A circulating air path connecting the outer barrel and the air supply device; filters to capture lint produced during drying; and cleaning the filter cleaning part, The cleaning part cleans the filter with overflowed water.

15. A washing and drying machine, characterized in that: include: A box body forming an outer contour; An outer barrel for storing water; A rotatable inner drum for storing laundry; Heating and dehumidifying devices for drying damp laundry; an air supply device for supplying air into the inner barrel; A circulating air path connecting the outer barrel and the air supply device; filters to capture lint produced during drying; and cleaning the filter cleaning part, The filter can be cleaned by water supplied from the cleaning unit hitting the upper contact portion and then naturally falling down.

16. The washing and drying machine according to claim 13, characterized in that: The water supply unit is disposed at least at a position lower than a height of the stored water stored in the water storage unit.

17. The washing and drying machine according to claim 13, characterized in that: The water storage part is provided with at least one hole, and the hole is provided at least at a portion of the water storage part where the water level is low.

18. The washing and drying machine according to claim 13, characterized in that: A resistance flow path for limiting the amount of water to a predetermined amount or less is provided between the water storage portion and the water discharge portion.

19. The washing and drying machine according to claim 13, characterized in that: The water storage portion is provided with at least one hole. The water storage portion is provided with a portion inclined downward toward the hole portion.

20. The washing and drying machine according to claim 13, characterized in that: The water released from the water release portion does not directly contact the filter.

21. The washing and drying machine according to claim 13, characterized in that: The water released from the water release portion contacts a portion above the filter and flows over the filter.

22. The washing and drying machine according to any one of claims 13 to 15, characterized in that: The filter has an inclination angle of 35 to 55 degrees with respect to a horizontal plane on a downstream side of the air flow.

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