CN107849796B - Clothes drying device - Google Patents
Clothes drying device Download PDFInfo
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- CN107849796B CN107849796B CN201680042760.6A CN201680042760A CN107849796B CN 107849796 B CN107849796 B CN 107849796B CN 201680042760 A CN201680042760 A CN 201680042760A CN 107849796 B CN107849796 B CN 107849796B
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- air
- drying
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- suction
- filter unit
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F58/00—Domestic laundry dryers
- D06F58/20—General details of domestic laundry dryers
- D06F58/22—Lint collecting arrangements
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F58/00—Domestic laundry dryers
- D06F58/02—Domestic laundry dryers having dryer drums rotating about a horizontal axis
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F58/00—Domestic laundry dryers
- D06F58/20—General details of domestic laundry dryers
- D06F58/26—Heating arrangements, e.g. gas heating equipment
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Detail Structures Of Washing Machines And Dryers (AREA)
Abstract
The disclosed device is provided with: an air suction path (25) for supplying air for drying from the air suction port (23) to the rotary drum; and an exhaust path (26) for supplying the drying air, which dries the clothes in the rotary drum, to the exhaust port (24). A first abutting surface (38a) and a second abutting surface (38b) are provided, and the first abutting surface (38a) and the second abutting surface (38b) are heat exchange portions in which drying air passing through the air intake path (25) and the air exhaust path (26) can exchange heat with each other.
Description
Technical Field
The present invention relates to a clothes drying apparatus that supplies air from outside into a rotary drum containing clothes and discharges the air deprived of moisture from the clothes to the outside of the apparatus to dry the clothes.
Background
In the case of drying laundry in a laundry dryer or a washing and drying machine, the laundry is agitated by rotating a rotary drum in which the laundry is stored, and air is blown into the rotary drum to contact the laundry. Then, the blown air deprives moisture from the laundry to dry the laundry (see, for example, patent document 1).
Fig. 9 is a diagram showing a cross-sectional structure of the conventional clothes drying device described in patent document 1. As shown in fig. 9, the conventional laundry drying device receives laundry in rotary drum 101, closes door 102, and then energizes motor 103. When the motor 103 is energized, the rotation of the motor 103 is transmitted to the rotary drum 101 by the drum rotating pulley 104 and the drum belt 105, and the laundry in the rotary drum 101 starts to rotate by the baffle 106.
On the other hand, the rotation of the motor 103 is also transmitted to the fan rotating pulley 107, the fan belt 108, and the fan pulley 109 to rotate the fan 110. By the rotation of the fan 110, outside air is sucked through a slit-shaped air inlet 112 provided in the front surface of the filter storage device 111. The sucked external air passes through the filter 113 and the suction air duct 114 and is heated by the self-heating heater 115.
The heated hot air is guided into rotary drum 101 through a plurality of hot air suction holes 116 provided in rotary drum 101. The heated air guided into the rotary drum 101 absorbs moisture of the laundry while passing between the laundry. Thereby, the drying process of the clothes is performed by the heated air. The hot air containing moisture after the drying process of the laundry is completed passes through the plurality of filter hot air discharge holes 118 and the filters 119 provided in the filter storage 117. The hot air further passes through a hot air exhaust hole 120 provided at the rear portion of the rotary drum 101 and is exhausted to the outside of the machine from a hot air exhaust port 122 provided above the rear surface of the casing 100 via an exhaust air duct 121.
The drying of the laundry is performed by continuously performing such a process.
However, in the above-described conventional configuration, when the air taken in from the outside and heated is discharged to the outside of the machine after drying the clothes, heat is also discharged to the outside of the machine at the same time. Thus, there are the following problems: the efficiency of drying is reduced or the environment in the room where the laundry drying device is installed is deteriorated.
The outside air is introduced into the machine through a filter 113 provided on the front surface of the casing 100. On the other hand, the hot air in the rotary drum 101 is discharged to the outside of the machine through a filter 119 provided at the rear of the rotary drum 101. Therefore, the two filters exist in different places, and the user must clean the two parts separately.
Patent document 1: japanese laid-open patent publication No. 53-143068
Disclosure of Invention
The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a clothes drying apparatus which improves the drying efficiency of the clothes drying apparatus, keeps the environment in which the clothes drying apparatus is installed comfortable, and improves the workability of cleaning a lint filter.
Specifically, a clothes drying device according to an embodiment of the present invention includes: a main body; a rotary drum rotatably provided in the main body; an air inlet for taking in air for drying; an air suction path for supplying drying air from the air suction port to the rotary drum; a heating unit provided in the intake path and configured to heat the drying air; a blowing unit provided in the suction path and blowing drying air into the rotary drum; an exhaust port for exhausting the drying air; an exhaust path for supplying drying air, which dries the clothes in the rotary drum, to the exhaust port; and a control unit for controlling the air blowing unit and the heating unit. The clothes drying device is also provided with a heat exchange part, and drying air passing through the air suction path and the air exhaust path can exchange heat in the heat exchange part.
With this configuration, the heat discarded together with the discharged air is recovered by the sucked air, and therefore the drying efficiency can be improved. Further, since heat release to the outside of the clothes drying apparatus can be suppressed, it is possible to reduce deterioration of the environment in which the clothes drying apparatus is installed due to heat release.
The clothes drying device of the embodiment of the invention is configured that the air inlet is opened towards the inner part of the main body. This allows the warmer air inside the main body to be sucked, and prevents large foreign matter from entering the suction path from the outside of the clothes drying apparatus.
The clothes drying device according to one embodiment of the present invention further includes a first lint filter unit for trapping foreign matter. The first lint filter unit has a first suction portion and a first discharge portion, the first suction portion and the first discharge portion are connected via a connecting portion, and the connecting portion between the first suction portion and the first discharge portion is provided with a first abutting portion for forming a heat exchange portion. With this configuration, heat exchange is facilitated between the drying air taken in from the outside and the drying air discharged to the outside of the machine, which have passed through the first lint filter unit.
In the clothes drying device according to the embodiment of the present invention, the first filter sheet is provided in at least the first exhaust section of the first suction section and the first exhaust section of the first lint filter unit. With this structure, lint can be effectively trapped.
The clothes drying device according to an embodiment of the present invention further includes a second lint filter unit downstream of the first lint filter unit. The second lint filter unit has a second suction portion provided on the suction path and a second discharge portion provided on the discharge path. The second suction unit is connected to the second discharge unit, and the second filter sheet is provided in both the second suction unit and the second discharge unit. With this configuration, foreign matter, lint, and the like contained in the sucked drying air and lint derived from laundry contained in a large amount in the drying air discharged from the rotary drum can be reliably collected.
In the clothes drying device according to the embodiment of the present invention, the second abutting part for forming the heat exchanging part is provided at a position downstream of the first lint filter unit and upstream of the heating part of the air intake path in the air intake path and the air exhaust path. With this configuration, heat exchange between the drying air taken in from the outside and the drying air discharged to the outside can be performed more reliably.
In addition, the clothes drying device according to the embodiment of the present invention further includes a filter storage unit configured to detachably store the first lint filter unit. The filter housing section is configured to have an intake port communicating with the intake path and an exhaust port communicating with the exhaust path.
In the clothes drying apparatus according to the embodiment of the present invention, the second lint filter unit is detachably provided in the filter storage portion.
Drawings
Fig. 1 is a perspective view showing an external appearance of a drum type washing and drying machine according to embodiment 1 of the present invention.
Fig. 2 is a plan view of the inside of the drum type washing and drying machine according to embodiment 1 of the present invention as viewed from above.
Fig. 3 is a view showing a sectional structure of a drum type washing and drying machine according to embodiment 1 of the present invention, taken along line 3-3 in fig. 2.
Fig. 4 is an enlarged cross-sectional view of a part of a drying path of the drum-type washing and drying machine according to embodiment 1 of the present invention, as viewed from above.
Fig. 5 is a cross-sectional view of the drum type washing and drying machine according to embodiment 1 of the present invention, taken along line 5-5 in fig. 4.
Fig. 6 is a cross-sectional view of the drum type washing and drying machine according to embodiment 1 of the present invention, taken along line 6-6 in fig. 4.
Fig. 7A is a perspective view of a first lint filter unit of a drum-type washing and drying machine according to embodiment 1 of the present invention.
Fig. 7B is a perspective view of a second lint filter unit of the drum-type washing and drying machine according to embodiment 1 of the present invention.
Fig. 7C is a perspective view of a cross section of the filter housing part of the drum-type washing and drying machine according to embodiment 1 of the present invention.
Fig. 8 is a graph showing the exhaust temperature of the drying air after the drying process in the drum-type washing and drying machine according to embodiment 1 of the present invention.
Fig. 9 is a cross-sectional view of a conventional clothes drying device.
Detailed Description
Embodiments of the present disclosure will be described below with reference to the accompanying drawings, taking a drum-type washing and drying machine as an example. The present disclosure is not limited to the embodiment.
(embodiment mode 1)
As shown in fig. 1 and 3, the drum-type washing and drying machine 1 according to embodiment 1 is provided with a rotary drum 2 inside a washing machine casing 6. As shown in fig. 3, the opening (laundry entrance 11) of the rotary drum 2 is provided to face obliquely upward on the front side (front side) of the washing machine casing 6, and the rotary drum 2 is configured in an inclined drum form. A door 9 (see fig. 1 and 3) for taking out laundry from the rotary drum 2 and putting laundry into the rotary drum 2 is openably and closably provided on the front surface of the washing machine casing 6. As shown in fig. 1 to 3, an operation unit 17 for inputting an operation selection of the drum-type washing and drying machine 1 by a user is disposed above the door 9. A detergent input portion 18 for inputting detergent is provided on the upper left side of the washing machine casing 6 as viewed from the front. A first lint filter unit 21 is disposed on the upper right side of the washing machine casing 6, and the first lint filter unit 21 is disposed to be pulled out from the washing machine casing 6 for maintenance. The first lint filter unit 21 is disposed at the top surface portion 7 of the washing machine casing 6 to facilitate maintenance by a user.
As shown in fig. 3, a water tub 3 accommodating a rotary drum 2 is supported by a suspension structure such as a damper 5 in a washing machine casing 6. The rotary drum 2 is driven to rotate by a motor 14 disposed at the rear of the water tub 3.
Next, the washing operation performed by the drum-type washing and drying machine 1 of the present embodiment will be described.
The user opens the door 9 to put the laundry into the rotary drum 2 through the laundry entrance 11, and puts the detergent into the detergent putting portion 18. When the user operates operation unit 17 to input an operation program selection input and an operation start instruction, mixed detergent water mixed with the detergent put into detergent putting unit 18 is supplied into water tub 3. When water is supplied according to the amount of laundry, the rotary drum 2 is driven to rotate. Then, a washing step of beating washing is performed in which the laundry is lifted by the stirring blades 4 provided on the inner circumferential surface of the rotary drum 2 and then dropped from above. When the washing process is completed, the drain valve 12 is opened to drain the dirty washing water from the drain pipe 13 to the outside of the rotary drum 2. Since the rinsing and dewatering steps are performed after the cleaning step, these steps are well known operations, and therefore, the description of these steps is omitted.
When the user operates the operation unit 17 to select a program including a drying process as an operation program, the drum-type washing and drying machine 1 is shifted to a drying process for drying the laundry after the dehydration process is completed. Further, operation unit 17 can be operated so that drum-type washing and drying machine 1 can be operated as a laundry dryer by performing only a drying process of drying wet laundry or the like introduced into rotary drum 2. That is, the drum type washing and drying machine 1 according to embodiment 1 has a function of drying laundry as a laundry drying device. The drying function of the drum-type washing and drying machine 1 will be described below.
Fig. 4 is a cross-sectional view of a part of a drying path of a drum type washing and drying machine 1 according to embodiment 1 of the present invention, which is enlarged and viewed from above, fig. 5 is a cross-sectional view of the drum type washing and drying machine taken along 5-5 in fig. 4, fig. 6 is a cross-sectional view of the drum type washing and drying machine taken along 6-6 in fig. 4, fig. 7A is a perspective view of a first lint filter unit of the drum type washing and drying machine, fig. 7B is a perspective view of a second lint filter unit of the drum type washing and drying machine, and fig. 7C is a cross-sectional perspective view of a filter housing portion of the drum type washing and drying machine.
As shown in fig. 2 and 3, a drying function component 8 including the components shown in fig. 4 to 6 for realizing the drying function of the drum-type washing and drying machine 1 is disposed on the upper portion of the washing machine casing 6.
An air inlet 23 for taking in air flowing out of the washing machine casing 6 into the washing machine casing 6 as drying air for clothes is provided so as to open into the washing machine casing 6 (see fig. 4 and 5). Further, an exhaust port 24 is provided to open to the outside of the washing machine casing 6, and the exhaust port 24 is an opening portion for discharging the drying air after drying the laundry in the rotary drum 2 (see fig. 1, 2, 4, and 6). As shown in fig. 3 to 6, the path from the air inlet 23 to the air outlet 24 is configured as a drying path 19 for the drying air. The drying path 19 is composed of an air suction path 25, a water tank 3, a rotary drum 2, and an air discharge path 26.
The air intake passage 25 is a passage for supplying the drying air taken in from the air inlet 23 into the rotary drum 2 from the air inlet 23 (see fig. 4 and 5). In the drum-type washing and drying machine 1 of the present embodiment, the air intake path 25 is constituted by the air intake port 23, the filter housing portion 35, the air intake port 33, the air intake duct 27, the first connecting hose 29, and the air supply inlet 15 provided in the water tank 3 (see fig. 5).
As shown in fig. 4 and 6, the exhaust path 26 is a path for discharging the drying air for drying the laundry in the rotary drum 2 from the inside of the rotary drum 2 toward the exhaust port 24. In the drum-type washing and drying machine 1 of the present embodiment, the exhaust path 26 is constituted by the air supply outlet 16 provided in the water tub 3, the second connecting hose 30, the filter housing portion 35, the discharge port 34, and the exhaust duct 28 communicating with the exhaust port 24. Further, as shown in fig. 1, a grid-shaped cover 24a is provided at the exhaust port 24 to prevent foreign substances from entering the washing machine casing 6.
As shown in fig. 4, in the drum-type washing and drying machine 1 of the present embodiment, the filter housing portion 35 is configured to have the first lint filter unit 21 and the second lint filter unit 22 mounted therein. Therefore, the air intake passage 25 is formed by the first air intake portion 21a of the first lint filter unit 21, the second air intake portion 22a of the second lint filter unit 22, and the air intake port 33 in the filter housing portion 35. The exhaust passage 26 is formed by the first discharge portion 21b of the first lint filter unit 21, the second discharge portion 22b of the second lint filter unit 22, and the discharge port 34 in the filter housing portion 35.
As shown in fig. 7A, the first lint filter unit 21 is configured such that the first suction portion 21a and the first discharge portion 21b are connected in parallel, and a first abutting surface (first abutting portion) 38a is provided at a connection portion 49 between the first suction portion 21a and the first discharge portion 21 b. The first lint filter unit 21 is provided with the first filter sheet 37a only in the first discharge portion 21b, and the first filter sheet 37a is not provided in the first suction portion 21 a.
As shown in fig. 7B, the second lint filter unit 22 is configured such that the second suction portion 22a and the second discharge portion 22B are connected in parallel. The second lint filter unit 22 is provided with a second filter sheet 37b at the second suction portion 22a and the second discharge portion 22 b. The first lint filter unit 21 and the second lint filter unit 22 are housed in the filter housing portions 35 (see fig. 7C).
As shown in fig. 4 and 5, the intake duct 27 in the intake path 25 is provided with a heater 39 as a heating portion and a blower fan 20 as a blowing portion.
As the heater 39, a PTC heater characterized by low cost and having a temperature self-control function is used.
Further, as the blower fan 20, a centrifugal fan is used. In the case of using a fan, in order to obtain a large flow rate, it is necessary to increase the rotation speed of the fan or use a fan having a larger fan diameter. However, when the rotation speed of the fan is increased, noise and vibration also increase. Therefore, in the drum-type washing and drying machine 1 of the present embodiment, a fan having a fan diameter of about 250mm is used as the blower fan 20, and the rotation speed of the fan is set to a rotation speed within an allowable range even if noise or vibration is generated.
In the drum-type washing and drying machine 1 of the present embodiment, the air blowing fan 20 is driven to rotate, and the drying air is sucked through the air inlet 23. The sucked drying air is heated by a heater 39 provided in the air intake duct 27 and is blown into the water tub 3 through the air blowing inlet 15. Thereby, the heated drying air flows into the rotary drum 2. The drying air flowing into the rotary drum 2 contacts the laundry or clothes (hereinafter, collectively referred to as clothes), and takes moisture from the clothes to become the drying air having absorbed moisture. The dried air having absorbed moisture is discharged from the air outlet 24 to the outside of the washing machine casing 6. This dries the laundry stored in rotary drum 2.
The motor 14, the heater 39, the blower fan 20, and the like are controlled by a control unit (not shown) such as a microcontroller disposed in the washing machine casing 6. The control unit controls the drum washing and drying machine 1 in accordance with an operation instruction input from the operation unit 17.
Next, the configuration of the intake passage 25 and the exhaust passage 26 in the above configuration will be described in detail with reference to fig. 4 to 7C.
An intake air flow regulator 40 (see fig. 4 and 5) for regulating the flow of the drying air passing through the filter housing portion 35 is provided in the intake passage 25 at the intake port 33 which is an inlet of the intake duct 27. Further, an exhaust gas rectification unit 41 (see fig. 4 and 6) for rectifying the drying air having passed through the filter housing unit 35 is provided in the exhaust passage 26 at the outlet 34 which is an outlet to the exhaust duct 28.
As shown in fig. 5, a heater 39 is provided on the intake passage 25 at a position about 20mm downstream of the intake rectifying unit 40. The air passage at the suction port 33 and the air passage at the position where the heater 39 is disposed are formed such that the width of the air passage at the suction port 33 in the horizontal direction is larger than the width of the air passage at the position where the heater 39 is disposed in the horizontal direction (see fig. 4). This improves the heating efficiency of the heater 39. The heater 39 is configured such that a large number of heat radiation plates 39a are arranged on the surface of the heater 39 to increase the heat radiation area, thereby improving the heating efficiency. Generally, when the heat radiation area of the heater 39 is increased, the pressure loss of the air in the heater 39 portion is increased, and the flow rate of the air flowing through the air passage is decreased.
In the drum-type washing and drying machine 1 of the present embodiment, as shown in fig. 5, a heater flow regulating plate 42 is used in a heater 39 portion. Thus, the air passage is divided into a first air passage 43 passing through the heater 39, another air passage 44a (upper side of the first air passage 43) provided above and below the first air passage 43 and directly connected to the blower fan 20 without passing through the heater 39, and another air passage 44b (lower side of the first air passage 43). With this configuration, a balance between maintenance of the heating efficiency of the heater 39 and the flow rate can be maintained for the drying air.
Further, an end portion 42a of the heater rectifying plate 42 on the side of the suction port 33 is formed to expand in the vertical direction toward the side of the suction port 33. Thus, the air duct is configured such that the drying air easily flows into the first air duct 43 and the drying air flowing into the first air duct 43 uniformly passes through the heater 39 portion. Further, since the heater flow regulating plate 42 is made of a non-combustible resin, the ignition due to the heat generation of the heater 39 is prevented.
The lead wire 48 connected to the heater 39 is configured to connect a connection portion (not shown) connected to the heater 39 and a connection portion (not shown) connected to the control unit. The lead 48 is configured to pass through a through hole (not shown) provided in the other air passage 44a provided in the first air passage 43 and the top surface of the air intake duct 27 between a connection portion with the heater 39 and a connection portion with the control portion, and to be led out of the air intake duct 27.
With this configuration, the lead wire 48 is always cooled by the cool dry air sucked from the air inlet 23. In addition, the temperature of the connection portion connecting the heater 39 and the lead wire 48 is also lowered due to heat conduction from the cooled lead wire 48. Therefore, the capacity of the heater 39 can be improved, and the quality of the connection portion between the heater 39 and the lead wire 48 can be ensured.
As described above, in the drum-type washing and drying machine 1 of the present embodiment, the air inlet 23, the heater 39, and the blower fan 20 are arranged in this order from the upstream side in the air intake path 25. With this configuration, the drying air flowing into the air intake path 25 can be suppressed from being affected by the heat transfer and the compression heat generated by the blower fan 20. In addition, the drying air is uniformly passed through the heater 39 portion to be effectively heated. Further, since the heater 39 causing a pressure loss of the air flowing through the air duct is not present downstream of the blower fan 20, it is possible to increase the amount of drying air passing through the air duct and reduce airflow noise.
Next, heat exchange of the drying air between the suction path 25 and the exhaust path 26 will be described.
The intake passage 25 and the exhaust passage 26 are configured to be adjacent to each other in the filter housing portion 35 (see fig. 7C) via a first abutting surface (first abutting portion) 38a formed in the first lint filter unit 21 housed in the filter housing portion 35 (see fig. 7A). The intake passage 25 and the exhaust passage 26 are configured to be adjacent to each other via a second adjacent surface (second adjacent portion) 38b formed in the filter housing portion 35 at a portion between the intake port 33 and the heater 39 and at a portion downstream of the discharge port 34 (see fig. 4 and 7C). The first abutting surface 38a and the second abutting surface 38b are configured to form a heat exchange portion for exchanging heat between the drying air passing through the intake passage 25 and the drying air passing through the exhaust passage 26 (see fig. 7C).
In the present embodiment, the second abutting surface (second abutting portion) 38b is formed on the downstream side of the suction port 33 and the discharge port 34 of the filter housing portion 35, but if it is formed on the downstream side of the first lint filter unit 21, the second abutting surface (second abutting portion) 38b may be formed on the upstream side of the suction port 33 and the discharge port 34. The second abutting surface (second abutting portion) 38b may be formed of a member different from the member forming the filter housing portion 35, or the second abutting surface (second abutting portion) 38b may not be formed in the filter housing portion 35.
In the present embodiment, as shown in fig. 7A, the first abutting surface 38a is formed by the first lint filter unit 21 detachably attached to the filter housing portion 35. Further, a contact surface may be formed on the filter storage portion 35 at a position upstream of the first lint filter unit 21.
In addition, in the portions of the first abutting surface 38a and the second abutting surface 38b, the abutting distances, which are the distances between the intake passage 25 and the exhaust passage 26, are close distances to the extent that the air passing through the intake passage 25 and the exhaust passage 26 can exchange heat with each other, respectively. In the present embodiment, the abutting distance, that is, the thickness of the portions of the first abutting surface 38a and the second abutting surface 38b is set to be about 1mm to 2mm, but the distance may be any distance that allows the air passing through the intake passage 25 and the exhaust passage 26 to exchange heat with each other. The heat exchanger is not limited to a single substantially planar shape, and may be formed of a plurality of surfaces or curved surfaces.
Next, a filter structure of the drum-type washing and drying machine 1 according to the present embodiment will be described with reference to fig. 1 and 5 to 7C.
As shown in fig. 1, 5, and 6, the first lint filter unit 21 and the second lint filter unit 22 are configured to be able to be pulled out of the washing machine casing 6 from the top surface portion 7 of the washing machine casing 6, thereby facilitating maintenance such as cleaning of the filters. As shown in fig. 1 and 7A, the decorative plate 45 of the first lint filter unit 21 is flush with the outer surface of the top surface portion 7 of the washing machine casing 6. A pivotal panel 46 is provided at a central portion of the decorative panel 45, and the pivotal panel 46 is configured such that a surface thereof is flush with a surface of the decorative panel 45. When the upper portion of the pivotal panel 46 is lightly pressed by a finger, the pivotal panel 46 biased by the spring is pivoted with respect to a pivot shaft (not shown) located below the pivotal panel 46. This allows fingers to be inserted into the lower interior of the decorative plate 45. Also, when the decorative plate 45 is pulled up with fingertips, the first lint filter unit 21 is pulled out to the outside of the washing machine case 6.
As shown in fig. 7B, a convex portion 22c and two claw portions 22d protruding toward the back surface side are provided on the upper portion of the second lint filter unit 22. In addition, a projection 22e is provided at the lower portion of the second lint filter unit 22. The second lint filter unit 22 is fixedly attached to the filter housing portion 35 on the back side of the first lint filter unit 21 by fitting the protruding portion 22e into a recess provided in the bottom of the filter housing portion 35 and fitting the claw portion 22d into the filter housing portion 35. When the convex portion 22c is pulled forward in a state where the first lint filter unit 21 is pulled out, the claw portion 22d of the upper portion of the second lint filter unit 22 is disengaged from the filter housing portion 35. Then, by pulling the second lint filter unit 22 upward in this state, the second lint filter unit 22 is pulled out to the outside of the washing machine casing 6.
The first lint filter unit 21 is configured to be provided with a seal member 47 along a periphery of a lower portion of the decorative plate 45 so as to prevent the drying air from leaking from an outer periphery of the decorative plate 45 to an outside of the washing machine casing 6 (see fig. 7A).
Next, the intake port 23, which is an inlet of the intake passage 25, will be described. The air inlet 23 is disposed above the inside of the washing machine casing 6 and opens into the inside of the washing machine casing 6 (see fig. 2 and 5). The air flowing into the washing machine mainly through the gap including the lower portion of the washing machine casing 6 is sucked as drying air into the air suction path 25 through the air suction port 23. The air inlet 23 is disposed above the inside of the washing machine casing 6, so that warmer air above the inside of the washing machine casing 6 can be sucked, and entry of large foreign matter and the like from the outside of the washing machine casing 6 can be suppressed.
When the blower fan 20 is operated, air in the washing machine casing 6 is taken in from the air inlet 23 as drying air in the air intake path 25. The sucked drying air passes through the suction passage 25, that is, the first suction portion 21a of the first lint filter unit 21, the second suction portion 22a of the second lint filter unit 22, the suction rectification portion 40, the heater 39, the suction duct 27, the blower fan 20, the first connection hose 29, and the blower inlet 15, and is blown into the rotary drum 2 (see fig. 5).
The drying air blown into the rotary drum 2 deprives moisture from the laundry to dry the laundry, and then is discharged from the exhaust port 24 to the outside of the washing machine casing 6 through the exhaust passage 26, i.e., the air outlet 16, the second connecting hose 30, the first discharge portion 21b of the first lint filter unit 21, the second discharge portion 22b of the second lint filter unit 22, and the exhaust rectification portion 41 (see fig. 6).
Next, the details of the first lint filter unit 21 and the second lint filter unit 22 will be described.
As shown in fig. 7A, each of the first suction portion 21a and the first discharge portion 21b of the first lint filter unit 21 is configured to have a mesh-like opening portion. Further, the first filter sheet 37a is attached only to the opening of the first suction part 21a and the first discharge part 21b of the first lint filter unit 21.
As shown in fig. 7B, the second suction portion 22a and the second discharge portion 22B of the second lint filter unit 22 are each configured to have a mesh-like opening portion. Further, a second filter sheet 37b is attached to openings of the second suction portion 22a and the second discharge portion 22 b.
Since the suction path 25 contains relatively few foreign matters in the drying air sucked from the inside of the washing machine casing 6, the foreign matters are collected by the second filter sheet 37b attached to the second suction portion 22a of the second lint filter unit 22 in consideration of cost and the like. On the other hand, since the drying air for drying the clothes passes through the exhaust path 26 in the exhaust path 26, the exhaust path 26 contains a large amount of foreign substances such as lint. Therefore, foreign matter is trapped by the first filter sheet 37a and the second filter sheet 37b attached to both the first discharge portion 21b and the second discharge portion 22 b.
In the present embodiment, the intake passage 25 is configured to collect foreign matter only by the second filter sheet 37b attached to the second suction portion 22a of the second lint filter unit 22, but the first filter sheet 37a may be provided also in the first suction portion 21a of the first lint filter unit 21, and the foreign matter may be collected by the first filter sheet 37a and the second filter sheet 37 b. That is, the first lint filter unit 21 may be provided with the first filter sheet 37a at least in the first discharge portion 21 b.
The first lint filter unit 21 is provided such that the first suction part 21a and the first discharge part 21b are located at the downstream side of the suction port 23 and the upstream side of the discharge port 34, respectively. The first suction portion 21a and the first discharge portion 21b are connected via a first abutting surface 38 a.
In addition, as shown in fig. 7A, in the present embodiment, the first lint filter unit 21 is constituted by a half shell (half shell) shaped container. The container is made of a polypropylene material in view of workability, strength, ease of handling, and the like, but may be made of other materials. The side surface and the bottom of the half-shell-shaped container form an opening portion formed by a plurality of openings in a grid shape. This ensures the strength of the container and a wide open surface for collecting lint.
In addition, the bottom of the first lint filter unit 21 is composed of the bottom of the first discharge part 21b and the bottom of the first suction part 21 a. The bottom of the first discharge portion 21b has an inclined portion inclined with respect to the surface of the decorative plate 45 above the first lint filter unit 21. Further, a step is provided between the bottom of the first discharge portion 21b and the bottom of the first suction portion 21 a. The inclined portion and the step of the bottom portion of the first lint filter unit 21 are configured such that the shape of the bottom portion of the first lint filter unit 21 matches the shape of the bottom portion of the filter housing portion 35. Thereby, the first lint filter unit 21 can be efficiently disposed in a limited space within the washing machine case 6, and thus a filter having a wider opening area can be configured even in the same space.
In the present embodiment, the first filter sheet 37a or the second filter sheet 37b is attached by insert molding to the surface on the inside of the openings formed in the mesh shape of the first discharge portion 21b of the first lint filter unit 21, the second suction portion 22a of the second lint filter unit 22, and the second discharge portion 22b, that is, the surface on the upstream side of the intake path 25 and the exhaust path 26. Therefore, the projections such as a mesh shape are not present on the surface (the upstream side surface) of the first filter sheet 37a and the second filter sheet 37b on the side where lint is collected, and therefore, a user can easily remove lint at the time of maintenance.
As shown in fig. 7C, a filter inlet and outlet 36 is provided in the filter housing portion 35 at an upper portion of the filter housing portion 35, and the filter inlet and outlet 36 is an opening through which the first lint filter unit 21 and the second lint filter unit 22 are taken in and out.
Further, the structure is: the suction port 33 as a part of the suction passage 25 and the discharge port 34 as a part of the exhaust passage 26 are adjacent to each other in the filter housing portion 35. In the filter housing portion 35, a second abutting surface 38b is formed on the downstream side of the suction port 33 and the discharge port 34.
The first abutting surface 38a formed on the first lint filter unit 21 and the second abutting surface 38b formed on the filter housing portion 35 form a heat exchange portion for exchanging heat of the drying air between the intake passage 25 and the exhaust passage 26. With this configuration, heat can be exchanged between the air taken in through the air inlet 23 and the air discharged through the air outlet 16. That is, the drying air sucked from the inlet 23 is heated between the inlet 23 and the heater 39. On the other hand, since the drying air in the exhaust path 26 is cooled, the exhaust temperature of the drying air discharged from the exhaust port 24 is lowered.
In the present embodiment, the first abutting surface 38a formed as the heat exchanging portion is formed of a polypropylene material, whereby the first abutting surface 38a can be integrally manufactured with the first lint filter unit 21. This facilitates manufacturing and enables cost reduction. The first abutting surface 38a and the second abutting surface 38b may be made of a steel material having high heat exchange efficiency.
As shown in fig. 7A, the first abutting surface 38a formed on the first lint filter unit 21 is disposed obliquely to the air blowing direction of the air intake path 25 and the air discharge path 26. By configuring the first abutting surface 38a in this manner, the direction of the flow of the drying air passing through the intake passage 25 and the exhaust passage 26 is changed, and the contact area between the drying air passing through the intake passage 25 and the exhaust passage 26 and the first abutting surface 38a is increased. Therefore, heat exchange between the drying air passing through the air intake passage 25 and the air exhaust passage 26 can be performed more efficiently.
Further, when the first lint filter unit 21 is inserted into the filter housing portion 35, the filter inlet and outlet 36 is sealed by the sealing member 47 provided to the first lint filter unit 21. The first lint filter unit 21 is reliably fixed to the filter housing portion 35 so that the filter inlet/outlet 36 is closed by the convex portion formed on the side surface of the sealing member 47.
In the present embodiment, the heater 39 is provided at a position about 20mm downstream of the suction port 33. Further, an intake air rectifying unit 40 is disposed downstream of the intake port 33. Therefore, even when the first lint filter unit 21 and the second lint filter unit 22 are taken out from the filter housing portion 35, the heater 39 is not exposed, and the user can be prevented from accidentally touching the heater 39.
Next, a drying process of the drum type washing and drying machine 1 according to the present embodiment will be described with reference to fig. 8.
Fig. 8 is a graph showing the exhaust temperature of the drying air after the drying process in the drum-type washing and drying machine 1 according to the present embodiment.
Fig. 8 shows the measurement results of the exhaust gas temperature under the conditions of the indoor temperature of 20 ℃ and the indoor humidity of 60%. As the heater 39, a PTC heater is used as described above. The output of the heater 39 changes at 200W, 400W, and 600W. Further, the operation of the blower fan 20 is controlled so that the air volume of the blower fan 20 is 0.5m3/min～4.0m30.5m between/min3The interval/min varies. Fig. 8 shows the measurement result of the exhaust temperature of the drying air exhausted from the exhaust port 24 to the outside of the machine under the above conditions.
As shown in fig. 8, the exhaust gas temperature decreases as the air volume increases for any heater output. In addition, the exhaust gas temperature decreases as the heater output decreases for any air volume. In addition, the difference in exhaust gas temperature due to the difference in heater output becomes smaller as the air volume becomes larger.
Here, it is empirically known that, by performing the drying process, when the indoor temperature is higher than the indoor temperature before the drying process by +20deg (c, the same applies hereinafter), the user feels uncomfortable to the indoor environment. That is, the exhaust gas temperature is preferably not more than the indoor temperature +20deg, and more preferably not more than the indoor temperature +10 deg.
In order to suppress the exhaust gas temperature to the above-described temperature, the lower the output of the heater 39, the better. However, if the output of the heater 39 is too low, the clothes are hard to dry, and the drying process takes a long time. On the other hand, if the output of the heater 39 is too high, the exhaust gas temperature becomes too high as in the case of 600W of fig. 8. In addition, if the temperature of the drying air in contact with the laundry is too high, shrinkage or damage of the laundry may occur. Therefore, the output of the heater 39 is preferably about 400W, and even if it is high, it is 500W, that is, preferably 500W or less.
Next, the air volume when the output of the heater 39 is set to 500W or less, preferably 400W, is examined. As described above, in order to suppress the exhaust temperature to +20deg or less, more preferably to +10deg or less, the air volume of the blower fan 20 is desirably set to 2m as shown in fig. 83More than min. This suppresses the increase in the indoor temperature to 20deg or less. In addition, the wrinkles of the clothes can be unfolded and the clothes can be dried by the large volume of the drying air supplied from the blower fan 20.
Further, even if the air volume is set too high, the effect is saturated as shown in fig. 8, and therefore, it is desirable that the air volume of the blower fan 20 is preferably 3m3/min。
In the above, in order to make the exhaust temperature equal to or lower than the indoor temperature of +20deg, more preferably equal to or lower than the indoor temperature of +10deg, the conditions of the output of the heater 39 and the air volume of the blower fan 20 were examined. Even if the output of the heater 39 and the air volume of the blower fan 20 are set so that the temperature of the drying air that has passed through the heater 39 and comes into contact with the clothes is equal to or lower than the indoor temperature of +20deg, more preferably equal to or lower than the indoor temperature of +10deg, in place of the exhaust temperature, the same effect can be obtained.
Next, the drying process of the drum type washing and drying machine 1 set as described above will be described.
By rotationally driving the blower fan 20, the drying air is first sucked through the air inlet 23. The drying air sucked in passes through the first air path 43 passing through the heater 39 provided in the air intake duct 27 and the other air paths 44a and 44b directly connected to the blower fan 20 without passing through the heater 39. At this time, only the drying air passing through the first air duct 43 is heated by the heater 39. Then, the heated drying air is mixed with the drying air that has not been heated through the other air paths 44a and 44b, and is blown into the water tub 3 through the air inlet 15. As described above, the heater 39 at this timeThe output is 500W or less, preferably 400W, and the air volume is 2m3A value of more than min, preferably 3m3/min。
The drying air passes through the heater 39, and thus the pressure loss in the heater 39 is increased, and the flow rate is decreased. However, in the drum-type washing and drying machine 1 of the present embodiment, the air duct is divided into the first air duct 43 and the other air ducts 44a and 44b in the portion of the heater 39 of the air intake path 25, and therefore, a balance between maintenance of the heating efficiency of the heater 39 and the air flow rate can be maintained with respect to the drying air. Therefore, a large volume of air can be maintained for the drying air.
The drying air is mixed after passing through the first air passage 43 and the other air passages 44a and 44b formed in the heater 39, and then flows into the rotary drum 2 rotationally driven by the motor 14. Then, the drying air comes into contact with the rotating clothes in the rotary drum 2 and takes moisture from the clothes, thereby becoming drying air having absorbed moisture. The drying air after moisture absorption is discharged to the outside of the machine through the exhaust port 24. Thereby, the laundry stored in rotary drum 2 is dried. As described above, the exhaust gas temperature at this time is designed to be room temperature +20deg or less, and more preferably room temperature +10deg or less.
Further, since the output of the heater 39 constituted by the PTC heater is set to 500W or less, the temperature rise in the rotary drum 2 is small, and the shrinkage and damage of the laundry can be suppressed. The blowing fan 20 has an air volume of 2m3A large air volume of/min or more, and therefore, the clothes can be dried while the wrinkles of the clothes are spread. Further, since the exhaust temperature of the drying air discharged to the outside of the machine is set to be equal to or lower than the room temperature +20deg, the temperature rise in the room in which the drum-type washing and drying machine 1 is disposed is small, and condensation in the room can be prevented. Thus, the environment in which the drum type washing and drying machine 1 is installed can be kept comfortable.
Industrial applicability
As described above, according to the present invention, since the air intake path and the air discharge path are disposed adjacent to each other, heat exchange is easily performed between the drying air passing through the air intake path and the air discharge path. Therefore, the sucked drying air can be efficiently heated, and thus, the drying air can be made to have a large volume and the blower fan can be made to have a low noise. Further, since heat release to the outside of the machine can be suppressed, deterioration of the environment in which the equipment is installed due to heat release can be reduced. Thus, the present invention can be widely applied to clothes dryers, vertical washing and drying machines, and the like.
Description of the reference numerals
1: a drum type washing and drying machine; 2: rotating the drum; 3: a water tank; 4: a stirring blade; 5: a shock absorber; 6: a washing machine housing; 7: a top surface portion; 8: a drying function component; 9: a door body; 11: an inlet and an outlet for the washings; 12: a drain valve; 13: a water discharge pipeline; 14: an electric motor; 15: an air supply inlet; 16: an air supply outlet; 17: an operation section; 18: a detergent input part; 19: a drying path; 20: an air supply fan (air supply unit); 21: a first lint filter unit; 21 a: a first suction part; 21 b: a first discharge section; 22: a second lint filter unit; 22 a: a second suction portion; 22 b: a second discharge portion; 22c, 22 e: a convex portion; 22 d: a claw portion; 23: an air suction port; 24: an exhaust port; 24 a: a grid-shaped cover body; 25: an air intake path; 26: an exhaust path; 27: an air intake duct; 28: an exhaust duct; 29: a first connecting hose; 30: a second connecting hose; 33: a suction inlet; 34: an outlet port; 35: a filter housing section; 36: a filter inlet and outlet; 37 a: a first filter sheet; 37 b: a second filter sheet; 38 a: a first abutment surface (first abutment portion); 38 b: a second abutment surface (second abutment portion); 39: a heater (heating unit); 39 a: a heat dissipation plate; 40: an intake air rectifying unit; 41: an exhaust gas rectification unit; 42: a heater rectifying plate; 43: a first air duct; 44a, 44 b: other air ducts; 45: a decorative plate; 46: rotating the panel; 47: a sealing member; 48: a lead wire; 49: a connecting portion; 100: a housing; 101: rotating the drum; 102: a door; 103: an electric motor; 104: a roller rotating belt pulley; 105: a roller belt; 106: a baffle plate; 107: a fan rotating pulley; 108: a fan belt; 109: a fan pulley; 110: a fan; 111: a filter storage device; 112: an air suction port; 113: a filter; 114: a suction duct; 115: a self-heating heater; 116: a hot air suction hole; 117: a filter container; 118: a filter hot air exhaust hole; 119: a filter; 120: a hot air exhaust hole; 121: an exhaust duct; 122: and a hot air exhaust port.
Claims (10)
1. A clothes drying device is provided with:
a main body;
a rotary drum rotatably provided in the main body;
an air inlet for taking in air for drying;
an air suction path for supplying the drying air from the air suction port into the rotary drum;
a heating unit provided in the air intake path and configured to heat the drying air;
a blowing unit provided in the air intake path and configured to blow the drying air into the rotary drum;
an exhaust port that opens toward the outside of the main body;
an exhaust path for supplying the drying air dried in the rotary drum to the exhaust port, the exhaust path being adjacent to the intake path;
a first lint filter unit for trapping foreign substances;
a control unit for controlling the air supply unit and the heating unit; and
a heat exchange unit in which the drying air passing through the air intake path and the air discharge path can be heat-exchanged at an adjacent portion between the air intake path and the air discharge path,
the first lint filter unit has a first suction part provided on the suction path and a first discharge part provided on the discharge path,
the first suction part and the first discharge part are connected via a connection part,
the connection portion between the first suction portion and the first discharge portion is provided with a first abutting portion for forming the heat exchange portion.
2. The laundry drying apparatus according to claim 1, further comprising:
a filter housing unit for detachably housing the first lint filter unit;
a suction port that is a port through which the filter housing portion communicates with the suction path; and
and an outlet port that communicates the filter housing portion with the exhaust path.
3. Laundry drying apparatus according to claim 2,
further comprising a second lint filter unit provided on the exhaust path and the intake path downstream of the first lint filter unit and detachably provided in the filter storage unit,
the second lint filter unit includes a second suction portion provided in a suction path and a second discharge portion provided in the discharge path, the second suction portion and the second discharge portion being connected to each other,
a second filter sheet is provided in both the second suction portion and the second discharge portion.
4. The laundry drying appliance of any one of claims 1 to 3,
the suction port opens into the main body.
5. The laundry drying appliance of any one of claims 1 to 3,
the first lint filter unit is provided with a first filter sheet at least at the first discharge portion.
6. Laundry drying apparatus according to claim 4,
the first lint filter unit is provided with a first filter sheet at least at the first discharge portion.
7. The laundry drying appliance of any one of claims 1 to 3,
a second abutting portion for forming the heat exchanging portion is provided on a downstream side of the first lint filter unit in the intake passage and the exhaust passage and on an upstream side of the heating portion in the intake passage.
8. Laundry drying apparatus according to claim 4,
a second abutting portion for forming the heat exchanging portion is provided on a downstream side of the first lint filter unit in the intake passage and the exhaust passage and on an upstream side of the heating portion in the intake passage.
9. Laundry drying apparatus according to claim 5,
a second abutting portion for forming the heat exchanging portion is provided on a downstream side of the first lint filter unit in the intake passage and the exhaust passage and on an upstream side of the heating portion in the intake passage.
10. Laundry drying apparatus according to claim 6,
a second abutting portion for forming the heat exchanging portion is provided on a downstream side of the first lint filter unit in the intake passage and the exhaust passage and on an upstream side of the heating portion in the intake passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911122003.1A CN111021008B (en) | 2015-09-08 | 2016-08-04 | Clothes drying device |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015-176223 | 2015-09-08 | ||
| JP2015176223A JP6484809B2 (en) | 2015-09-08 | 2015-09-08 | Clothes dryer |
| PCT/JP2016/003607 WO2017043016A1 (en) | 2015-09-08 | 2016-08-04 | Clothes dryer |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911122003.1A Division CN111021008B (en) | 2015-09-08 | 2016-08-04 | Clothes drying device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107849796A CN107849796A (en) | 2018-03-27 |
| CN107849796B true CN107849796B (en) | 2020-04-21 |
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911122003.1A Active CN111021008B (en) | 2015-09-08 | 2016-08-04 | Clothes drying device |
| CN201680042760.6A Active CN107849796B (en) | 2015-09-08 | 2016-08-04 | Clothes drying device |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911122003.1A Active CN111021008B (en) | 2015-09-08 | 2016-08-04 | Clothes drying device |
Country Status (7)
| Country | Link |
|---|---|
| JP (1) | JP6484809B2 (en) |
| CN (2) | CN111021008B (en) |
| MY (1) | MY189885A (en) |
| PH (2) | PH12017502140A1 (en) |
| SG (3) | SG11201709865VA (en) |
| TW (2) | TWI729591B (en) |
| WO (1) | WO2017043016A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2023184304A (en) * | 2022-06-17 | 2023-12-28 | パナソニックＩｐマネジメント株式会社 | washing machine |
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2015
- 2015-09-08 JP JP2015176223A patent/JP6484809B2/en active Active
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2016
- 2016-08-04 CN CN201911122003.1A patent/CN111021008B/en active Active
- 2016-08-04 CN CN201680042760.6A patent/CN107849796B/en active Active
- 2016-08-04 SG SG11201709865VA patent/SG11201709865VA/en unknown
- 2016-08-04 SG SG10201811728YA patent/SG10201811728YA/en unknown
- 2016-08-04 WO PCT/JP2016/003607 patent/WO2017043016A1/en active Application Filing
- 2016-08-04 SG SG10201811726VA patent/SG10201811726VA/en unknown
- 2016-08-04 MY MYPI2017704459A patent/MY189885A/en unknown
- 2016-08-09 TW TW108143168A patent/TWI729591B/en active
- 2016-08-09 TW TW105125261A patent/TWI684737B/en active
-
2017
- 2017-11-24 PH PH12017502140A patent/PH12017502140A1/en unknown
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2020
- 2020-08-19 PH PH12020500634A patent/PH12020500634A1/en unknown
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| JP2008099804A (en) * | 2006-10-18 | 2008-05-01 | Matsushita Electric Ind Co Ltd | Drum type washing/drying machine |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN107849796A (en) | 2018-03-27 |
| SG10201811728YA (en) | 2019-02-27 |
| PH12020500634A1 (en) | 2021-09-01 |
| PH12017502140B1 (en) | 2018-05-07 |
| CN111021008B (en) | 2022-12-20 |
| JP6484809B2 (en) | 2019-03-20 |
| TWI729591B (en) | 2021-06-01 |
| PH12017502140A1 (en) | 2018-05-07 |
| SG11201709865VA (en) | 2017-12-28 |
| CN111021008A (en) | 2020-04-17 |
| WO2017043016A1 (en) | 2017-03-16 |
| SG10201811726VA (en) | 2019-02-27 |
| MY189885A (en) | 2022-03-17 |
| TW202014656A (en) | 2020-04-16 |
| TW201721071A (en) | 2017-06-16 |
| JP2017051296A (en) | 2017-03-16 |
| TWI684737B (en) | 2020-02-11 |
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