TW201514356A - Washing machine - Google Patents

Abstract

The present invention relates to a washing machine comprising a rotary drum that is rotatably disposed in a water tank, a hydrophilic property portion disposed on the rotary drum and a functional element imparting means used for imparting functional elements to the hydrophilic property portion.

Description

washing machine

Embodiments of the present invention relate to a washing machine.

Conventionally, it has been conceivable to provide various functional films in the water tank of a washing machine. For example, Patent Document 1 discloses that it is necessary to reduce the power consumption during drying, and to provide a film of a heat-insulating paint on the inner surface of the water tank. Further, Patent Document 1 discloses that by allowing a hydrophilic hollow bead to be contained in a film of a water-repellent heat-insulating paint, the water film adhering to the surface of the film is expanded and evaporated, thereby drying Further power consumption is reduced.

However, in recent years, a paint having an antifouling function which is hydrophilic has been developed, and if such a paint is applied to the inner surface of a water tank of a washing machine, the inner surface of the water tank can be cleanly maintained by its antifouling function. However, the inner surface of the water tank is in contact with the water accumulated in the water tank during the washing operation or the washing operation, and the water scattered from the inner rotation groove during the dehydrating operation is also in contact. Therefore, the inner surface of the water tank can be relatively cleanly maintained even if it is not coated with such an antifouling function, so that the antifouling is maintained even on the inner surface of the water tank. Function, and can not effectively use its function.

[Advanced technical literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2010-172436

In the present embodiment, a washing machine capable of applying the antifouling function of hydrophilicity to a portion that can most effectively utilize the function is provided.

The washing machine of the present embodiment is provided with a hydrophilic performance portion in a rotary groove that is rotatably provided in the water tank.

Further, the washing machine of the present embodiment is a hydrophilic paint which is applied to a rotary groove which is rotatably provided in a water tank to suppress the growth of mold.

Further, the washing machine of the present embodiment is a hydrophilic paint which is applied to a rotary groove rotatably provided in a water tank to suppress adhesion of dirt.

Further, in the washing machine of the present embodiment, a hydrophilic paint that suppresses adhesion of the lotion is applied to a rotary groove that is rotatably provided in the water tank.

106‧‧‧Operator panel

107‧‧‧Control device

134‧‧‧ water container

100‧‧‧Washing machine

101‧‧‧Outer box

135‧‧‧Connecting tube

133‧‧‧Water supply valve

131‧‧‧Water level sensor

104‧‧‧Washing entrances and exits

123‧‧‧ bellows

136‧‧‧In-machine water supply hose

108‧‧‧Sink

132‧‧‧ trachea

105‧‧‧ door leaf

119‧‧ ‧ partition

118‧‧‧ hole

117‧‧‧ reinforcing members

127‧‧‧ cover

121‧‧‧ openings

120‧‧‧ openings

122‧‧‧balance ring

110‧‧‧Motor

114‧‧‧bearing bracket

115‧‧‧ bearing

113‧‧‧Rotary axis

112‧‧‧Rotor

111‧‧‧ Stator

116‧‧‧Roller

124‧‧‧Drainage

130‧‧‧ gas trap

300‧‧‧Hydrophilic film

103‧‧‧ box body

126‧‧‧Filter box

128‧‧‧Drain valve

129‧‧‧Drainage pipe

109‧‧‧suspension device

125‧‧‧In-house drainage hose

132‧‧‧ trachea

102‧‧‧Abutment

200‧‧‧Washing machine

217‧‧‧Operator panel

204‧‧‧Rotating trough

215‧‧‧ cover

214‧‧‧ top cover

201‧‧‧Outer box

206a‧‧‧screw

202‧‧‧Sink

203‧‧‧Elastic hanging mechanism

206‧‧‧balance ring

205‧‧‧ hole

204a‧‧‧1st component

204b‧‧‧2nd component

204c‧‧‧ reinforcing members

211‧‧‧ trachea

210‧‧‧ gas trap

Rb‧‧‧Uncoated

Ra‧‧‧ Coating Department

T‧‧‧Rotating trough T

207‧‧‧ stirring body

209‧‧‧Drain valve

208‧‧‧Drainage path

213‧‧‧Drive Department

118a‧‧‧ end face

205a‧‧‧ end face

FIG. 1 is a longitudinal cross-sectional view schematically showing a structure of a drum type washing machine according to a first embodiment.

FIG. 2 is a longitudinal cross-sectional side view schematically showing a structure of a vertical axis type washing machine according to the first embodiment.

Fig. 3 is a view showing a developed view of a rotary groove.

Fig. 4 is a view showing conditions and test results of a practical test.

Fig. 5 is a view visually showing test results of a practical test.

Fig. 6 is a view showing test results of a simulated soil washing test.

Fig. 7 is a view visually showing the test results of the simulated soil washing test.

FIG. 8 is a view corresponding to FIG. 3 showing an example of a test target portion of a mold adhesion and development inhibition confirmation test.

Fig. 9 is a view showing test results of a mold adhesion and development inhibition confirmation test.

Fig. 10 is a view corresponding to Fig. 1 of the second embodiment.

Fig. 11 is a view corresponding to Fig. 2 in the second embodiment.

Fig. 12 is a view corresponding to Fig. 1 of the third embodiment.

Fig. 13 is a view corresponding to Fig. 2 in the third embodiment.

Fig. 14 is a view (1) corresponding to Fig. 1 in a modified embodiment.

Fig. 15 is a view (No. 2) corresponding to Fig. 1 in a modified embodiment.

Fig. 16 is a view corresponding to Fig. 2 in a modified embodiment.

[Fig. 17] Fig. 17 is an enlarged view showing a periphery of a hole in which an end face of a hole does not have a hydrophilic performance portion, and (b) shows a portion having a hydrophilic property at an end surface of the hole. An enlarged view of the periphery of a hole as an example of a structure.

Hereinafter, a plurality of embodiments of the washing machine will be described with reference to the drawings. In the embodiments, substantially the same elements are denoted by the same reference numerals, and description thereof will be omitted.

(First embodiment)

The washing machine 100 shown in Fig. 1 is a so-called horizontal-axis type drum type washing machine in which the central axis of rotation of the rotary groove is horizontal or slightly inclined, and the outer casing 101 constituting the outer periphery thereof is a base 102 made of synthetic resin. And the box body 103 combined with the base 102 is comprised. In Fig. 1, the front portion of the box body 103 on the left side is provided with a laundry inlet and outlet 104 at a substantially central portion thereof. Further, a door fan 105 that opens and closes the laundry inlet and outlet 104 is provided in the front portion of the tank body 103. An operation panel 106 is provided at an upper portion of the front portion of the box body 103. A control device 107 that controls the overall operation of the washing machine 100 is provided on the back side of the operation panel 106. A bottomed cylindrical water tank 108 that closes the back side of the bottom portion is provided in the outer casing 101. The water tank 108 is elastically supported by the suspension device 109 such that its central axis is slightly inclined on the axis which is lowered toward the rear in FIG.

A motor 110 is provided outside the back surface of the water tank 108. The motor 110 is composed of, for example, a DC brushless motor, and is of an outer rotor type, and includes a stator 111 and a rotor 112. The stator 111 is fixed to the outside of the back surface portion of the water tank 108. A rotating shaft 113 is provided at a center portion of the rotor 112. The rotating shaft 113 is supported by the bearing bracket 114 via the bearing 115 and is inserted into the inside of the water tank 108. In the interior of the sink 108 There is a bottomed cylindrical drum 116 that closes the back side of the bottom.

The drum 116 is made of, for example, a metal formed of a stainless steel plate or the like. The drum 116 has a center portion of the back surface portion fixed to the front end portion of the rotating shaft 113 of the motor 110, and is provided so as to be rotatable about an axis of the water tank 108, that is, an axis that can be inclined downward toward the rear. At this time, the motor 110 functions as a drive device that rotates the drum 116. At the bottom of the drum 116, in other words, on the outer surface of the back surface portion, a reinforcing member 117 for reinforcing the back surface portion of the drum 116 is provided. The reinforcing member 117 is made of, for example, metal formed by die casting of stainless steel or the like. In the peripheral wall portion constituting the crotch portion of the drum 116, a plurality of holes 118 are formed in the entire region. The holes 118 are penetrating and can be ventilated and ventilated. Further, a plurality of separators 119 made of synthetic resin for picking up the laundry are provided on the inner peripheral portion of the drum 116. Further, the water tank 108 may be disposed on an axis on which the center axis is not inclined, and at this time, the drum 116 is set to be rotatable about a horizontal axis.

Both the drum 116 and the water tank 108 are open on the front side, and are the opening 120 and the opening 121. Around the opening 120 of the drum 116, a balance ring 122 made of synthetic resin, for example, in which a liquid such as brine is sealed is provided. The balance ring 122 is fixed from the outer surface of the drum 116 by, for example, a metal (not shown) made of stainless steel or the like. The opening 121 of the water tank 108 is connected to the laundry inlet and outlet 104, for example, via an annular bellows 123 formed of an elastic material such as rubber. Thereby, the laundry inlet and outlet 104 is connected via the bellows 123, the opening 121 of the water tank 108, and the opening 120 of the drum 116 and the inside of the drum 116.

A drain port 124 is provided at the bottom of the back side of the water tank 108. At the drain port 124, one end portion of the in-machine drain hose 125 is connected. The other end portion of the in-machine drain hose 125 is connected to a filter cartridge 126 provided at the front of the base 102 of the outer casing 101. At the front end portion of the filter cartridge 126, the cover 127 is detachably mounted. Inside the filter cartridge 126, a bat filter (not shown) integrally formed with the lid 127 is housed. Further, a drain valve 128 is connected to the lower portion of the filter cartridge 126. A drain pipe 129 is connected to an outlet portion of the drain valve 128. The front end portion of the drain pipe 129 is led out from the base 102 of the outer casing 101 to the outside of the machine, and is connected to an off-board drain hose (not shown).

A gas trap 130 is provided at an upper portion of the filter cartridge 126. The gas trap 130 and the water level sensor 131 disposed in the upper portion of the outer casing 101 are connected by a gas pipe 132. The water level sensor 131 detects the water level in the water tank 108 via the internal drain hose 125, the filter box 126, the air trap 130, and the air tube 132, and outputs it to the control device 107.

A water supply valve 133 and a water supply container 134 are provided in an upper portion of the outer casing 101. An external water supply hose extending from a faucet of a water passage (not shown) is connected to an inlet portion of the water supply valve 133. Further, one end portion of the connection pipe 135 is connected to the outlet portion of the water supply valve 133. The other end of the connecting pipe 135 is connected to the water supply container 134. A lotion storage unit (not shown) is provided inside the water supply container 134. At the water supply container 134, one end portion of the organic inner water supply hose 136 is connected. The other end of the in-machine water supply hose 136 is connected to the upper portion of the water tank 108. The water supplied from the water channel via the water supply valve 133 is supplied into the water tank 108 via the connection pipe 135, the water supply container 134, and the in-machine water supply hose 136.

The washing machine 200 shown in FIG. 2 is a vertical axis type washing machine in which the rotation center axis of the rotation groove extends in the vertical direction, and the inside of the outer case 201 constituting the outer periphery thereof is elastically supported by the elastic suspension mechanism 203. A bottomed cylindrical sink 202. Inside the water tank 202, a bottomed cylindrical rotary groove 204 that is open on the upper surface is rotatably provided.

The rotary groove 204 is formed by, for example, a first member 204a made of stainless steel or the like, and a second member 204b made of synthetic resin. A reinforcing member 204c for reinforcing the second member 204b, in other words, a bottom portion for reinforcing the rotary groove 204, is provided outside the second member 204b constituting the bottom portion of the rotary groove 204. The reinforcing member 204c is made of, for example, a metal formed of a stainless steel plate or the like. The rotary groove 204 is a washing tank that is configured to rotate around a vertical axis and serves as a washing course for washing the laundry and a washing course for washing the laundry, and a dewatering groove for dehydrating the washing. The rotary groove 204 has a plurality of holes 205 in its peripheral wall portion. The holes 205 are continuous and can be ventilated and ventilated. Moreover, only a portion of the holes 205 are shown on the drawing. A balance ring 206 made of a synthetic resin in which a liquid such as saline is sealed is attached to the upper portion of the rotary tub 204. The balance ring 206 is fixed from the outer surface of the rotary groove 204 by, for example, a metal screw 206a made of stainless steel or the like. At the bottom in the rotation groove 204, a synthetic resin stirring body 207 is rotatably provided.

A drain path 208 is provided at a lower portion of the water tank 202. A drain valve 209 is provided in the drain path 208, and the drain valve 209 is opened to discharge the water in the water tank 202 to the outside of the machine. Moreover, water level sensing is provided at the bottom of the outer tank 202. Air trap 210 used. A water level sensor (not shown) is connected to the gas trap 210 via a gas pipe 211. The water level sensor is now formed by a pressure sensor and senses the water level in the water tank 202 based on the pressure within the air trap 210.

A drive mechanism portion 213 is provided at a central portion of a lower portion of the water tank 202. The drive mechanism unit 213 includes a variable speed drive motor, a clutch mechanism, a speed reducer, a brake device, and the like. At the time of the washing stroke or the washing stroke, the drive mechanism portion 213 decelerates the rotational force of the motor by the speed reducer, and transmits it to the agitating body 207 by the clutch mechanism. At the time of the dehydration stroke, the drive mechanism unit 213 does not decelerate the rotational force of the motor by the deceleration device, but is transmitted to the rotary groove 204 and the agitating body 207 at a high speed by the clutch mechanism.

A top cover 214 is provided at an upper portion of the outer casing 201. In the top cover 214, for example, a double-pleated cover 215 that opens and closes the laundry inlet and outlet is opened and closed. Further, a tank cover (not shown) on the upper portion of the water tank 202 is attached to the opening and closing. An operation panel 217 is provided at a front portion of the top cover 214. A control device (not shown) that controls the overall operation of the washing machine 200 is provided on the back side of the operation panel 217. A water supply mechanism unit (not shown) that supplies water from the water channel into the water tank 202 is provided in the rear portion of the top cover 214.

As shown in FIG. 1, the washing machine 100 described above is provided with a hydrophilic performance film 300 as an example of a hydrophilic performance portion on at least the outer surface of the side portion of the drum 116. At this time, the hydrophilic performance film 300 as the hydrophilic performance portion constantly exhibits hydrophilic properties. The hydrophilic property film 300 is formed on the outer surface of the side portion of the drum 116 as a whole. Moreover, as shown in FIG. 2, the above-described washing machine 200 is provided as a pro at least on the outer surface of the first member 204a constituting the side portion of the rotary groove 204. A hydrophilic performance film 300 as an example of a water performance portion. At this time, the hydrophilic performance film 300 is formed on the outer surface of the side portion of the rotary groove 204 as a whole. Next, the hydrophilic performance film 300 will be described in further detail. The hydrophilic performance film 300 is, for example, a coating material having a hydrophilic property such as a cerium oxide-based inorganic coating material (hereinafter referred to as "hydrophilic material") is sprayed onto the outer surface of the side portion of the drum 116 or the side portion of the rotary groove 204. The outside is formed by the applicator.

At this time, since the drum 116 and the rotary groove 204 are both made of metal, the hydrophilic material is sprayed to the outside of the drum 116 or the outside of the rotary groove 204, and can be coated by baking, and can be The paint is strong. Further, the baking temperature of the hydrophilic material is preferably set to a temperature higher than 250 ° C which may be decomposed by a general organic substance, and may be set, for example, at a temperature of 300 ° C or 500 ° C. By baking the hydrophilic material at such a high temperature, the organic substance contained in the hydrophilic material can be almost or completely decomposed, and the hydrophilic property film 300 which is almost or completely inorganicized can be formed.

Further, when such a material is applied, the degreasing treatment for degreasing the surface of the substrate before blowing the material onto the substrate is common. In the present embodiment, since both the drum 116 and the rotary groove 204 as the base material are made of stainless steel, the degreasing treatment performed before the injection of the hydrophilic material can be degreased using a strong alkaline degreasing agent such as PH14. Therefore, the hydrophilic material can be sprayed from the surface of the drum 116 as the substrate or the surface of the rotary groove 204, or the hydrophilic material can be easily applied to the surface of the drum 116 or the surface of the rotary groove 204. .

Further, in the present embodiment, it is applied to form at least the following properties. A hydrophilic material of the hydrophilic property film 300. In other words, the hydrophilic performance film 300 of the present embodiment has a hydrophilic property in which the contact angle of water is less than the lower limit of the contact angle of water with respect to the glass. It is generally conceivable that the lower limit of the contact angle of water with respect to the glass is 20 degrees. Therefore, in the present embodiment, a hydrophilic material which forms a hydrophilic performance film 300 of, for example, 13 degrees, in which the contact angle of water is less than 20 degrees is applied.

Further, in the present embodiment, a material containing a cerium oxide is used as the hydrophilic material forming the hydrophilic performance film 300, and the hydrophilic performance film 300 formed of the hydrophilic material has at least a hardness characteristic of a pencil hardness of 5H or more. In other words, the hydrophilic performance film 300 of the present embodiment is formed with a strong structure formed of a siloxane skeleton and a strong alkali metal or an alkaline earth metal, whereby the hydrophilic property film 300 has a firmness of a pencil hardness of 5H or more. Construction.

Further, the hydrophilic performance film 300 of the present embodiment has a sterol group and is extremely high in hydrophilicity. Specifically, the hydrophilic performance film 300 has a hydrophilic property to such an extent that water can be removed only by contact with a general oily ink adhering to the hydrophilic performance film 300. Therefore, even if the ink of the general oil-based pen is attached to the hydrophilic performance film 300, it can be peeled off and removed by allowing water to contact the portion thereof and floating the ink by water.

Further, the hydrophilic performance film 300 of the present embodiment has a thickness of 10 μm or less and the film thickness thereof is extremely thin. That is, in general, when it is desired to improve the hydrophilic property, it is necessary to repeat the coating of the hydrophilic material, and therefore, the film thickness of the hydrophilic portion obtained tends to be thick. In the present embodiment, it is possible to form a very high temperature by applying and baking a hydrophilic material once. The hydrophilic property of the hydrophilic property of the membrane 300 is a hydrophilic material. Therefore, even if the coating of the hydrophilic material is not repeated, the hydrophilic property film 300 having extremely high hydrophilic properties can be formed, whereby the thickness of the hydrophilic property film 300 can be controlled to a thickness of 10 μm or less. Further, in the drawing, it is convenient to express the film thickness of the hydrophilic performance film 300 more than actually.

Further, the hydrophilic performance film 300 of the present embodiment has a surface roughness of 2 μm or less. In the present embodiment, a hydrophilic material in which the hydrophilic performance film 300 having such an extremely smooth surface is formed is applied. Further, the hydrophilic material to which the present embodiment is applied is milky white in the state before the blowing, but is transparent to the extent that it is almost impossible to judge milky white after the blowing, and is formed to be almost or completely transparent after the baking.

Next, the test results performed to evaluate the antifouling performance of the washing machine of the present embodiment will be described. Here, for example, the "utility test", the "simulated soil washing test", and the "mold adhesion and development inhibition confirmation test" described below are performed. Further, in each test, for example, the rotary groove T for the test is shown in the mode of Fig. 3 as a developed view, that is, the hydrophilic performance film 300 is coated with the semicircular portion Ra provided on the outer surface of the side portion, and the remaining half-circumferential portion Rb is used. There is no test washing machine for coating the rotary tank T of the hydrophilic performance film 300. Hereinafter, the portion Ra to which the hydrophilic property film 300 is applied is referred to as "coating portion Ra", and the portion Rb to which the hydrophilic property film 300 is not applied is referred to as "uncoated portion Rb".

≪Practical test≫

This "practical test" is a washing machine that is actually used in the following conditions under the conditions of the A house and the B house. Further, after use, the surface of the coating portion Ra of the rotary groove and the surface of the uncoated portion Rb are wiped with different cloths, and the increase in the weight of each cloth after wiping is used as the amount of dirt adhering to the coating portion Ra, respectively. The amount of dirt adhering to the uncoated portion Rb was observed. Further, the unit of the amount of dirt adhesion is expressed by "mg/25 cm ² ", that is, by weight per 25 square centimeters. Further, the dirt adhering to the rotary groove after use may include the lotion used in the test operation, and more accurately, it may contain "a lot of detergent which remains after the end of the operation".

‧A house

For example, as shown in Fig. 4, in the A house, the liquid washing agent a and the softening agent a which are generally commercially available are used, and the normal washing operation is performed, that is, 75 times "by the laundry stroke, the washing course, and the dehydration stroke. The general washing operation is performed, and 30 normal drying operations are performed. In addition, in the A house, it is operated using bath water.

At this time, the amount of the dirt adhering to the coating portion Ra is equal to or less than "0.01 mg / 25 cm ² " of the detection limit value. On the other hand, the amount of dirt adhering to the uncoated portion Rb is 0.5 mg/25 cm ² . In other words, in the use condition of the A house, it was confirmed that the coated portion Ra exhibited higher antifouling performance than the uncoated portion Rb.

‧B House

For example, as shown in FIG. 4, in the B house, a general commercially available powder lotion b, a liquid lotion b, and a soft finish agent b are used for the usual washing and transporting. Turning, that is, performing 76 "general washing operations by the laundry stroke, the washing course, and the dehydration stroke", and performing a plurality of normal drying operations. In addition, in the B house, it is operated using tap water.

At this time, the amount of the dirt adhering to the coating portion Ra is equal to or less than "0.01 mg / 25 cm ² " of the detection limit value. On the other hand, the amount of dirt adhering to the uncoated portion Rb is 0.2 mg/25 cm ² . In other words, in the use conditions of the B house, it was confirmed that the coating portion Ra exhibited higher antifouling performance than the uncoated portion Rb. In addition, in FIG. 5, the test result obtained by this "practical test" shows the "stain adhesion amount" visually at this time.

≪ Simulated dirt washing test≫

In the "simulated soil washing test", the clothes in which the simulated dirt adhered are put into the rotation tank of the washing machine for the test, and the normal washing operation is performed a predetermined number of times. Then, after the predetermined number of washing operations are performed, the normal tank washing operation is performed, that is, "the operation of storing the water in the water tank to rotate the rotating tank in order to clean the water tank". In addition, at this time, approximately 2.8 g of mud dirt and approximately 1.2 g of lard were formed to form a total of about 4.0 simulated soil adhering to the clothes. Further, in the washing course, a commercially available powder lotion is used, and water used for washing or washing is water having a hardness of 50 ppm.

In the "simulated soil washing test", the amount of dirt adhering to the coating portion Ra and the amount of dirt adhering to the uncoated portion Rb before and after the tank washing operation are shown in Fig. 6 . In addition, the dirt adhering to the rotating tank at this time may also contain the lotion used in the test operation, which is more correct. It may also contain "a lot of detergents that remain after the end of the operation."

For example, when the normal washing operation is performed for 30 times, the amount of dirt adhering to the coating portion Ra is equal to or less than "0.01 mg/25 cm ² " of the detection limit value before the tank washing operation, and is also checked after the tank is washed. The limit value is "0.01 mg/25 cm ² or less". On the other hand, the amount of dirt adhering to the uncoated portion Rb was 0.3 mg/25 cm ² before the tank washing operation, and was also 0.1 mg/25 cm ² after the tank washing. In other words, in the case where the uncoated portion Rb has 0.1 mg/25 cm ² of dirt remaining even in the tank washing operation, the coating portion Ra is a scale capable of adhering dirt even without performing the tank washing operation. The suppression is below the detection limit value. Thus, it was confirmed that the coating portion Ra can exhibit higher antifouling performance than the uncoated portion Rb. In addition, in FIG. 7(a), the test result at the time of the normal washing operation of 30 times is performed, and the "soil adhesion amount" is visually shown at this time.

In addition, for example, when the normal washing operation is performed for 90 times, the amount of dirt adhering to the coating portion Ra is equal to or less than "0.01 mg/25 cm ² " of the detection limit value before the tank washing operation, and after the tank is washed. It is below the detection limit value of "0.01mg/25cm ² ". On the other hand, the amount of dirt adhering to the uncoated portion Rb was 0.7 mg/25 cm ² before the tank washing operation, and was also 0.3 mg/25 cm ² after the tank washing. In other words, in the case where the uncoated portion Rb has a residual amount of 0.3 mg/25 cm ² even if the tank cleaning operation is performed, the coating portion Ra can be used to remove the dirt even if the tank washing operation is not performed. The suppression is below the detection limit value. Thus, it was confirmed that the coating portion Ra can exhibit higher antifouling performance than the uncoated portion Rb. In addition, in FIG. 7(b), the result of the test at the time of the normal washing operation of 90 times is performed, and the "soil adhesion amount" is visually shown at this time.

Test for confirming the adhesion and developmental inhibition of mites

The "mold adhesion and development inhibition confirmation test" is as follows.

‧ test subject

As shown in Fig. 8, 12 points indicated by broken lines in the coating portion Ra, that is, 12 positions of "3 columns in length × 4 rows in width" and 12 portions indicated by broken lines in the uncoated portion Rb are also In other words, 12 points of "3 columns in length × 4 columns in width" are used as test target portions. Further, the size of each test target portion has an area of 80 mm × 32 mm, that is, an area equivalent to 25 cm ² .

‧ Operating conditions

A washing operation formed by the next stroke is performed.

Washing operation: washing stroke → first intermediate dehydration stroke → first washing stroke → second intermediate dehydration stroke → second washing stroke → final dehydration stroke

‧ mold used in the test

In the test, the next mold was used.

Exophiala dermatitidis NBRC 6421 (outside mold)

‧Test method (summary)

Using the washing machine for the test described above, the mold spore liquid is applied to the coating portion Ra of the rotary tub T and the uncoated portion Rb, that is, the coating "containing the above The mold of the spore liquid". Then, after standing for 24 hours, the place where the mold spore liquid was applied was wiped off. Thereafter, the above washing operation is carried out, and the above-mentioned places are also wiped after the end of the washing operation. Furthermore, after standing for 3 days, the above places were also wiped. Furthermore, after standing for 7 days, the same place was also wiped. The mold wiped at each of the above timings was cultured by a known culture method and calculated. Then, based on the calculation results, the presence or absence of the hydrophilic coating material for the mold removal effect and the development inhibition effect was evaluated. The details of the test are shown below.

(1) Adhesion of dirt to the rotating groove

The clothes to which the simulated dirt adhered were placed in a rotating tank, and the above washing operation was performed 25 times. Thereby, the dirt is allowed to adhere to the rotating groove.

(2) Coating of mold spore solution

In the test target portion of the coating portion Ra, about 10 ⁷ CFU/ml (CFU: colony forming unit) of the mold spore solution was dropped into 10 μl (10 μL × 20 portions) at any of 20 places, and it was allowed to dry for about 3 hours. On the other hand, 20 μl of about 10 ⁸ CFU/ml of the mold spore solution was dropped on the test target portion of the uncoated portion Rb, and spread with a bacterial solution stick.

Further, the coating portion Ra has extremely high hydrophilic properties due to coating, whereas the uncoated portion Rb does not have hydrophilic properties. Therefore, the properties of the surfaces of the two are different, and it is difficult to apply the mold spore solution by the same coating method. Therefore, in this test, the test target portion of the coating portion Ra and the test target portion of the uncoated portion Rb are coated with different ones. The cloth method coats the mold spore solution. Further, the amount of the mold spore liquid applied to both of the coating methods was the same.

(3) Test operation

After the mold spore solution was applied to the test subject portion and dried as described above, the door leaf of the washing machine was turned off for 24 hours. During the placement, the temperature inside the washing machine is about 21.5~25.8 °C, and the relative humidity (RH: Relative Humidity) is about 65~87%. After the above-described washing operation, any three of the test target portions of the coated portion Ra are wiped with a sterilized granular strip, that is, n1, n2, and n3. And any three of the test target portions of the uncoated portion Rb (indicated by n1, n2, and n3 in Fig. 9). Thereafter, the above washing operation is performed, and the same is wiped, and the door leaf is closed and placed. During the placement, the temperature inside the washing machine is about 22.8~26.6 °C, and the relative humidity (RH: Relative Humidity) is about 90%. Further, the wiping was performed similarly 3 days after the placement. Further, the wiping was performed similarly after 7 days. The sterilized pellets wiped at each of the above timings are placed in respective sterilization bags together with the medium. Then, the mold is washed out by a well-known homogenizer (Stomachere), that is, by "pulverizing the sample and homogenizing and then extracting the fungus."

(4) Measurement of mold quantity

The liquid washed out from the sterilized pellets was used as a sample solution, and the sample solution was adjusted to a 10-stage dilution by a physiological saline solution. Then, 0.1 ml of each of the sample solution and the diluent was applied to a PDA medium. Further, 1 ml of the sample solution was filtered with a membrane filter, and the membrane filter was adhered to the surface of other PDA medium. The medium was incubated at about 28 ° C (28 ° C ± 1 ° C) for 7 days. Thereafter, the number of colonies after development, that is, the number of "colony" was measured, and the number of molds per 25 cm ² was determined.

(5) Calculation of removal rate of mold number

The removal rate (%) of the number of molds was calculated by the following formula.

Removal rate = (1-(B/A)) × 100

A: Number of molds before washing operation

B: Number of molds after washing operation

‧test results

The test results are shown in Fig. 9. That is, the removal rate of the number of molds on the 0th day after the end of the washing operation is about 99.92% in the coating portion Ra, and about 94.3% in the uncoated portion Rb. Further, on the third day from the end of the washing operation to the seventh day, no mold was propagated in the coated portion Ra and the uncoated portion Rb. This is because it is presumed that the nutrient coated with the mold is washed away by the washing operation.

According to the above test results, it is observed that there is an extremely high probability in the coating portion Ra, and at this time, the probability of nearly 100% is removed, and therefore, the coating portion Ra can be confirmed to be higher than the uncoated portion Rb. Antifouling properties.

The washing machines 100 and 200 according to the present embodiment are rotatably The hydrophilic performance film 300 having extremely high hydrophilic properties is provided on the outer surface of the side portions of the rotary grooves 116, 204 in the water tanks 108, 202. According to this configuration, the antifouling function of the hydrophilic performance film 300 can keep the outer surface of the side portions of the rotary grooves 116 and 204 that cannot be easily maintained by maintenance such as cleaning, and the washing machine 100 and 200 can be most effective. It uses the antifouling function of hydrophilicity.

Further, according to the washing machines 100 and 200, since the hydrophilic performance film 300 is provided on the outer surface of the side portions of the rotating rotary grooves 116 and 204, the dirt peeled off from the surface of the rotary groove during the rotation of the rotary grooves 116 and 204 is also affected. The centrifugal force is easily removed, and the surface of the rotary grooves 116, 204 can be further cleaned.

Further, according to the washing machines 100 and 200, the hydrophilic performance film 300 is provided on the outer surface of the side portions of the rotary grooves 116 and 204 as a whole. Therefore, the entire outer surface of the rotary grooves 116, 204 can be kept clean by the antifouling function of the hydrophilic performance film 300. Further, according to the washing machines 100 and 200, since the rotary grooves 116 and 204 are not made of synthetic resin but made of metal, the hydrophilic material can be coated by baking the outer surface of the metal portions of the rotary grooves 116 and 204. Thereby, a highly hydrophilic and durable hydrophilic property film 300 which is highly inorganicized can be formed.

Further, according to the washing machines 100 and 200, the hydrophilic performance film 300 has a contact angle of water of a lower limit value of a contact angle with respect to water of the glass, and has a sterol group. Therefore, the hydrophilic property film 300 can exert extremely high hydrophilic properties. Therefore, water is easily immersed between the surface of the hydrophilic property film 300 and the dirt adhering to the hydrophilic property film 300, and can be attached to the hydrophilic property film 300. The dirt floats and is removed.

Moreover, according to the washing machines 100 and 200, the hydrophilic performance film 300 has a cerium oxide and has a pencil hardness of 5H or more. Therefore, it is possible to prevent the hydrophilic property film 300 from being damaged and the hydrophilic property film 300 from being peeled off. Further, according to the washing machines 100 and 200, the hydrophilic performance film 300 has a thickness of 10 μm or less, and an extremely thin hydrophilic film 300 can be realized. Further, according to the washing machines 100 and 200, the hydrophilic performance film 300 has a surface roughness of 2 μm or less, and an extremely smooth hydrophilic property film 300 can be realized.

Further, the washing machine 100 may be further configured to have a metal screw attached to the drum 116 or a hydrophilic performance film 300 on the inner surface of the drum 116. Further, the washing machine 200 may be further configured to have a metal screw 206a attached to the drum 204 or a hydrophilic performance film 300 on the inner surface of the rotary groove 204. That is, the portion in which the hydrophilic performance film 300 is formed in the present embodiment is not limited to the outer surface of the side portion of the drum 116 or the outer surface of the side surface of the rotary groove 204. Further, when the metal-made screw forms the hydrophilic performance film 300, it is not necessary to form the hydrophilic property film 300 as a whole in the screw, and it is sufficient to form the hydrophilic property film 300 on the surface of the screw head which is the outer surface. Further, when the hydrophilic performance film 300 is formed on the inner surface of the drum 116 or the rotary groove 204, the hydrophilic performance film 300 may be formed entirely on the inner surface, or the hydrophilic performance portion 300 may be formed on a part of the inner surface.

Further, the hydrophilic performance film 300 can also be colored. That is, as the hydrophilic material forming the hydrophilic property film 300, a material which leaves a color after the substrate is blown and after baking can be applied. Thereby, it is easy to visually confirm whether or not unevenness is generated on the formed hydrophilic performance film 300 by visual observation or the like, for example, The rotary groove which is not uniformly formed with the hydrophilic performance film 300 is specified as a defective product.

Further, the washing machines 100 and 200 may be set after the end of the washing course including the washing course, the washing course, the dehydration course, or the like, or during the execution of the washing course, and the water is stored in the water tanks 108 and 202 to make the drum 116. The washing stroke of the rotation groove 204 is rotated. In the washing course, the hydrophilic film 300 is contacted with water to remove the dirt adhering to the hydrophilic film 300. Further, in the washing course, the amount of water accumulated in the inside of the water tanks 108, 202 is increased in accordance with the washing stroke, and the rotation speed of the drum 116 and the rotary groove 204 is set at a speed faster than the rotation speed of the washing stroke or the washing stroke. Just fine.

Further, the rust preventive effect of the hydrophilic performance film 300 can also be expected from the washing machines 100 and 200.

(Second embodiment)

In the present embodiment, the hydrophilic performance film 300 is not integrally provided on the outer surface of the side portion of the drum 116 or the outer surface of the side portion of the rotary groove 204, but is a part of the outer surface of the side portion of the drum 116 or the outer side of the side of the rotary groove 204. Part of the hydrophilic performance film 300 is set.

That is, as shown in FIG. 10 or FIG. 11, the side portion of the drum 116 of the washing machine 100 or the side portion of the rotation groove 204 of the washing machine 200 is accumulated in the water tank 108 or accumulated in the washing operation or the washing operation. The water in the water tank 202 is in contact with a portion lower than the set water level L indicated by the one-point chain line. Therefore, the outer side of the side of the drum 116 or the outer side of the side of the rotary groove 204 is more than The portion where the water level L is set lower can be relatively cleanly maintained even if the hydrophilic property film 300 is not provided. However, the outer surface of the side surface of the drum 116 or the outer surface of the side portion of the rotary groove 204 is higher than the position where the water level L is set, and the water accumulated in the water tank 108 or the water tank 202 during the washing operation or the washing operation is not easily contacted. The part, so the dirt is easy to remain.

Therefore, in the present embodiment, as shown in FIG. 10 or FIG. 11, the hydrophilic performance film 300 is provided in a portion of the outer surface of the side portion of the drum 116 or the outer surface of the side portion of the rotary groove 204 that is higher than the set water level L. Thereby, the hydrophilic property can be imparted to the outer surface of the side portion of the drum 116 or the outer surface of the side portion of the rotary groove 204, particularly in a portion where the dirt easily remains, and the antifouling function by the hydrophilic property can be effectively utilized. Moreover, the amount of use of the hydrophilic material can be reduced. Further, since the set water level L can be changed, the region where the hydrophilic performance film 300 is formed can be appropriately adjusted in accordance with the desired water level. At this time, the region where the hydrophilic performance film 300 is formed, for example, includes the settable minimum water level in the washing machines 100 and 200, or is widely set to include a range in which the water level is variable.

(Third embodiment)

In the present embodiment, the hydrophilic performance film 300 is not integrally provided on the outer surface of the side portion of the drum 116 or the outer surface of the side portion of the rotary groove 204, but is a part of the outer surface of the side portion of the drum 116 or the outer side of the side of the rotary groove 204. Part of the hydrophilic performance film 300 is set.

That is, as described above, the outer surface of the side portion of the drum 116 or the outer portion of the side portion of the rotary groove 204 is lower than the set water level L, although water is easily contacted. The portion that is relatively cleanly held, but not the part that does not completely leave the dirt. In particular, the outer surface of the side surface of the drum 116 or the outer surface of the side portion of the rotary groove 204 at a position lower than the set water level L is a portion where water contacts during the washing operation or the washing operation. Therefore, when the dirt remains in this portion, the dirt is deteriorated due to a change in time or the like, and the deteriorated dirt may be transferred to the laundry during the washing operation or the washing operation.

Therefore, in the present embodiment, as shown in Fig. 12 or Fig. 13, the hydrophilic performance film 300 is provided on the outer surface of the side portion of the drum 116 or the outer surface of the side portion of the rotary groove 204 at a lower portion than the set water level L. Thereby, in the outer surface of the side portion of the drum 116 or the outer surface of the side portion of the rotary groove 204, there is a possibility that the dirt remains in the relatively cleanly held portion, and the concentration is imparted as a hydrophilic property, and the washing operation can be prevented. At the time of washing or washing, the deteriorated dirt is transferred to the laundry. Moreover, the amount of use of the hydrophilic material can be reduced. Further, since the set water level L can be changed, the region where the hydrophilic performance film 300 is formed can be appropriately adjusted in accordance with the desired water level. At this time, the region where the hydrophilic performance film 300 is formed, for example, includes the settable minimum water level in the washing machines 100 and 200, or is widely set to include a range in which the water level is variable.

(Other embodiments)

This embodiment can be expanded or deformed, for example, as follows.

For example, as shown in FIG. 14, the washing machine 100 may further have a configuration in which the hydrophilic performance film 300 is provided on the outer surface of the bottom portion of the back surface portion of the drum 116. At this time, it is also possible to provide a hydrophilic whole on the outer surface of the back portion of the drum 116. The performance film 300 may be provided with a hydrophilic performance film 300 on a portion of the outer surface of the back surface portion of the drum 116. Further, although not shown, the washing machine 200 may have a hydrophilic property on the outer surface of the bottom portion formed of the second member made of metal when the second member 204b of the bottom portion is made of a metal formed of stainless steel or the like. The construction of the membrane 300. At this time, the hydrophilic performance film 300 may be provided on the entire outer surface of the metal bottom surface, and the hydrophilic performance film 300 may be provided on a part of the outer surface of the metal bottom surface.

Further, for example, as shown in FIG. 15, the washing machine 100 may further have a structure in which the reinforcing member 117 that reinforces the bottom portion of the back surface portion of the drum 116 also has the hydrophilic performance film 300. At this time, the hydrophilic performance film 300 may be provided on the entire surface of the reinforcing member 117, or the hydrophilic performance film 300 may be provided on a part of the surface of the reinforcing member 117. Moreover, for example, as shown in FIG. 16, the washing machine 200 may further have a structure in which the reinforcing member 204c at the bottom of the reinforcing rotary groove 204 is provided with the hydrophilic performance film 300. At this time, the hydrophilic performance film 300 may be provided on the entire surface of the reinforcing member 204c, or the hydrophilic performance film 300 may be provided on a part of the surface of the reinforcing member 204c. Further, the hydrophilic performance film 300 may be provided on both the upper surface and the lower surface of the reinforcing member 204c, and the hydrophilic performance film 300 may be provided on either of the upper surface and the lower surface of the reinforcing member 204c.

Further, for example, as shown in Fig. 17 (a), the washing machines 100 and 200 may have a structure in which the end faces 118a and 205a constituting the inner circumferential surfaces of the holes 118 and 205 do not have the hydrophilic performance film 300, for example, as shown in Fig. 17 (b). It is to be noted that the washing machines 100 and 200 may have a structure in which the hydrophilic performance film 300 is provided on the end faces 118a and 205a of the holes 118 and 205.

The test results shown in the first embodiment can be similarly obtained even when the same test is carried out in the washing machine of another embodiment.

Further, the above-described respective embodiments and modified embodiments may be combined as appropriate.

The washing machine according to each of the embodiments described above is provided with a hydrophilic performance portion in a rotary groove that is rotatably provided in the water tank. According to this configuration, it is possible to clean the rotary tub in a portion where the washing machine can not easily perform maintenance such as cleaning that cannot be reached by hand, and it is possible to most effectively utilize the antifouling function of hydrophilicity.

Moreover, according to the test results of the above-described respective embodiments, it is understood that by applying a hydrophilic coating material to the rotating tank, the effect of inhibiting the growth of mold, the effect of suppressing the adhesion of dirt, and the suppression of the lotion can be achieved. Excellent effect such as the effect of adhesion of the class.

In addition, in a normal stainless steel rotary groove which is not coated with a hydrophilic material, for example, even if a chlorine gas-based tank detergent is used for a tank cleaning operation once a month, dirt is gradually accumulated. According to the washing machine of the present embodiment, it has been confirmed from the above test results that the hydrophilic material is applied to the rotary groove, and the dirt is hardly accumulated even if the washing operation is repeated. Therefore, it is possible to suppress the frequency of implementation of the tank washing operation, or to eliminate the need for the tank washing operation, and to reduce the running cost associated with the tank washing operation, and to reduce the amount of use such as tank detergent, water, electricity, etc. Fees, etc.

Further, each of the above-described embodiments is presented as an example, and does not limit the scope of the invention. The implementation of these new rules can be implemented in a variety of other forms, without departing from the gist of the invention. Various omissions, substitutions, and changes can be made. The present invention and its modifications are intended to be included in the scope of the invention and the scope of the invention as defined in the scope of the claims.

100‧‧‧Washing machine

101‧‧‧Outer box

102‧‧‧Abutment

103‧‧‧ box body

104‧‧‧Washing entrances and exits

105‧‧‧ door leaf

106‧‧‧Operator panel

107‧‧‧Control device

108‧‧‧Sink

109‧‧‧suspension device

110‧‧‧Motor

111‧‧‧ Stator

112‧‧‧Rotor

113‧‧‧Rotary axis

114‧‧‧bearing bracket

115‧‧‧ bearing

116‧‧‧Roller

117‧‧‧ reinforcing members

118‧‧‧ hole

119‧‧ ‧ partition

120‧‧‧ openings

121‧‧‧ openings

122‧‧‧balance ring

123‧‧‧ bellows

124‧‧‧Drainage

125‧‧‧In-house drainage hose

126‧‧‧Filter box

127‧‧‧ cover

128‧‧‧Drain valve

129‧‧‧Drainage pipe

130‧‧‧ gas trap

131‧‧‧Water level sensor

132‧‧‧ trachea

133‧‧‧Water supply valve

134‧‧‧ water container

135‧‧‧Connecting tube

136‧‧‧In-machine water supply hose

300‧‧‧Hydrophilic film

Claims (25)

A washing machine having a hydrophilic performance portion in a rotary groove rotatably provided in a water tank. The washing machine according to claim 1, wherein the hydrophilic performance portion is a material coated with a hydrophilic material on the outer surface of the rotary tub. The washing machine according to claim 1, wherein the hydrophilic performance portion is provided on an outer surface of a side portion of the rotary tub. The washing machine according to claim 3, wherein the hydrophilic performance portion is provided on the outer surface of the side portion of the rotary tub. The washing machine according to claim 3, wherein the hydrophilic portion is provided in a part of the outer surface of the side portion of the rotary tub. The washing machine according to claim 1, wherein the hydrophilic performance portion is provided on an outer surface of a bottom portion of the rotary tub. The washing machine according to claim 6, wherein the hydrophilic performance portion is provided on the outer surface of the bottom portion of the rotary tub. The washing machine according to claim 6, wherein the hydrophilic portion is provided in a part of the outer surface of the bottom of the rotary tub. The washing machine according to the first aspect of the invention, wherein the screw attached to the rotary groove also has the hydrophilic performance portion. The washing machine according to claim 1, wherein the inner surface of the rotary groove also includes the hydrophilic performance portion. The washing machine according to claim 1, wherein the rotating groove is provided with a plurality of holes, and the end faces of the holes are also provided. The hydrophilic performance section. The washing machine according to claim 1, wherein the rotating groove is made of metal, and the hydrophilic portion is coated by baking the hydrophilic material on the outer surface of the rotating groove. The washing machine according to the first aspect of the invention, wherein the hydrophilic performance portion has a thickness of 10 μm or less. The washing machine according to claim 1, wherein the hydrophilic property portion has a surface roughness of 2 μm or less. The washing machine according to claim 1, wherein the hydrophilic performance portion is colored. The washing machine according to the first aspect of the invention, wherein the hydrophilic property portion has a cerium oxide and has a pencil hardness of 5H or more. The washing machine according to the first aspect of the invention, wherein the hydrophilic property portion has a performance that a contact angle of water with respect to water of the glass is less than a lower limit value. The washing machine according to the first aspect of the invention, wherein the rotating groove is a drum that rotates about an axis that is inclined toward a horizontal axis or a rear side. The washing machine according to claim 18, wherein the reinforcing member that reinforces the bottom of the drum also includes the hydrophilic performance portion. The washing machine according to claim 1, wherein the rotating groove is configured to rotate about a vertical axis. The washing machine according to claim 20, wherein the reinforcing member that reinforces the bottom of the rotating groove also includes the hydrophilic portion. The washing machine according to the first aspect of the invention, wherein the hydrophilic performance portion is a person who constantly exhibits hydrophilicity. A washing machine in which a hydrophilic coating for inhibiting the growth of mold is applied to a rotary groove rotatably provided in a water tank. A washing machine in which a hydrophilic coating for suppressing adhesion of dirt is applied to a rotary groove rotatably provided in a water tank. A washing machine in which a hydrophilic coating for suppressing adhesion of a lotion is applied to a rotary groove rotatably provided in a water tank.