WO2017023012A1

WO2017023012A1 - Washing machine having moisture absorption member

Info

Publication number: WO2017023012A1
Application number: PCT/KR2016/008241
Authority: WO
Inventors: 정상윤; 최권일; 전신희; 이대기; 오명환
Original assignee: 주식회사 엘지화학
Priority date: 2015-07-31
Filing date: 2016-07-27
Publication date: 2017-02-09
Also published as: WO2017023012A8

Abstract

The present invention relates to a washing machine which can reduce energy required for a washing stroke and a drying stroke. The washing machine has a moisture absorption member including porous aluminosilicate in which the ratio of Si/Al is equal to or lower than 15 and the total specific volume V_totalof pores, which is defined as the volumetric sum of V_mesoand V_micro,isequal to or larger than 0.3 cm³/g.

Description

【Specification】

[Name of invention]

Washing machine with moisture absorption member

Technical Field

The present invention relates to a washing machine, and more particularly, to a dry combined drum washing machine provided with a moisture absorbing member.

Cross Citation with Related Applications

This application claims the benefit of priority based on Korean Patent Application No. 10-2015-0109124 dated July 31, 2015 and Korean Patent Application No. 10-2016-0094947 dated July 26, 2016. All content disclosed in the literature is included as part of this specification.

[Technique to become background of invention]

Drum washing machine is a device for washing laundry by rotating the drum by the driving force of the motor in a state in which detergent, washing water and laundry in the drum. Such a drum washing machine has advantages of less damage to laundry, less tangling of laundry, and less water usage.

Recently, a combined drum washing machine capable of drying laundry by blowing hot air into the drum through a drying duct has been used. Such a dry combined drum washing machine selectively or continuously performs a washing stroke, a rinse stroke, a dehydration stroke, a drying stroke, and the like.

1 is a side cross-sectional view schematically showing the main configuration of a conventional combined drying drum washing machine.

Referring to FIG. 1, a drum washing machine generally includes a cabinet 10 having a laundry inlet formed on a front surface thereof, a door 11 installed to be opened and closed at a laundry inlet of the cabinet 10, and washing water inside the cabinet 10. A tub 20 installed to store the drum, a drum 22 rotatably installed in the tub 20, and a motor 50 installed in the tub 20 to transmit driving force to the drum 22. It is composed.

And, the drum washing machine to circulate the air for the drying stroke A drying duct 60 and a male duct 70 are installed. A heater 63 and a blowing fan 67 are installed in the drying duct 60 to discharge hot air into the tub 20. The drying duct 60 and the male duct 70 are installed to communicate with each other and at the same time communicate with the inside of the drum 22. The tub 20 is formed with an intake port through which the hot air is drawn through the drying duct 60 and an exhaust port through which the air is discharged to the male duct 70. The expansion duct 70 is provided with a water supply nozzle 75 for supplying water angle so as to expand the moisture in the air. In the drum washing machine configured as described above, a washing stroke and a drying stroke are generally performed in the following manner.

The user opens the door 11, puts laundry into the drum 22, and closes the door 11 to seal the drum 22. When the washing stroke starts, the water supply device 15 waters the water. The water supplied is heated by the heater 17 and mixed with the detergent of the cesegong 12 and then supplied to the inside of the tub 20, introduced into the drum 22 through the through hole, and wetted with laundry. Subsequently, after the motor 50 is driven to rotate the drum 22 for a set washing time, the contaminated water in the tub 20 is drained out of the washing machine through the drain hose 83 by the drain pump 80. .

When the drying stroke is started, power is applied to the heater 63 and the blowing fan 67 of the drying duct 60, and the generated hot air flows into the drum 22 by the guide of the drying duct 60. do. The hot air in the drum 22 is changed to low temperature and humid air while heating and drying the laundry, and the low temperature and humid air is discharged to the condensation duct 70 through the exhaust port of the tub 20. The low temperature and humid air supplied to the expansion duct 70 is compressed by the cooling water supplied through the water supply nozzle 75 to lose moisture. The air thus dried is introduced into the drying duct 60 again by the blowing fan 67, and this series of processes is repeatedly performed to dry the laundry.

However, in such washing and drying strokes, energy loss due to energy use for heating water, energy use for heating air, and loss of condensation heat, etc. occurs, which inevitably causes a large amount of thermal energy use and loss. . Due to the relatively long washing time and the high power consumption of the drum washing machine, various attempts have been made to reduce energy use and loss in the washing and drying strokes by increasing the energy efficiency of the heating device or the shafting device. However, energy savings through efficiency of these devices are facing limitations.

In particular, as the size of washing machines has increased in recent years and the importance of environmentally friendly products is emphasized, the necessity of energy saving is increasing.

[Content of invention]

Problem to be solved

The present invention is to provide a washing machine that enables the reduction of energy required in the washing and drying stroke.

[Measures of problem]

According to the present invention, the atomic ratio of Si / Al is 15 or less, and V _meso and

The total pore volume defined as the sum of the _total Vmicro specific volume V is equipped with a moisture absorption member which comprises a porous aluminosilicate is less than 0.3 cmVg washing machine is provided with:

V _meso is a Barrett-Joiner-Hellenda (BJH) cumulative volume for _{mesoprocessing} of 2 to 300 nm,

Is the volume of micropores having a pore size of less than 2 nm calculated by the t-plot method from the argon adsorption Brunner-Emeth-Teller (BET) surface area.

According to the invention, the washing machine is

A cabinet 10 having a laundry inlet,

A door 11 installed to be opened and closed at the laundry inlet;

Tub 20 installed to store the wash water in the cabinet,

A drum 22 rotatably installed in the tub,

A motor 50 installed in the tub and transmitting a driving force to the drum, and fixed to an outer circumferential surface of the upper side of the tub, with both ends of the tub A drying duct (60) connected to an intake port and an exhaust port to circulate hot air into the drum;

In the drying duct 60, a moisture absorbing member 65 including the porous aluminosilicate, a heater 63 attached to an outer circumferential surface of the moisture absorbing member and heating the moisture absorbing member and air, and a blowing fan for circulating air ( 67) is built in. Hereinafter, a washing machine according to an embodiment of the present invention will be described.

Prior to this, the terminology is for the purpose of describing particular embodiments only and is not intended to limit the invention, unless expressly stated throughout this specification.

As used herein, the singular forms “a,” “an” and “the” include plural forms as well, unless the phrases clearly indicate the opposite.

In addition, the meaning of "include" as used herein specifies a particular characteristic, region, integer, step, operation, element or component, excluding the addition of other specific characteristics, region, integer, step, operation, element, or component. It is not meant to be. According to one embodiment of the invention, the atomic ratio of Si / Al is 15 or less,

A washing machine is provided with a hygroscopic member comprising a porous aluminosilicate having a total specific volume V _tot al of pores defined by the volume sum of V _meso and Vmicro of at least 0.3 Cm ³ / g:

V _meso is a Barrett-Joiner-Hellenda (BJH) cumulative volume for mesopores having a pore size of 2 to 300 nm,

The ν _"αο argon adsorption Bruner-a Teller (BET) the volume of fine pores having a pore size of less than a 2 nm calculated from the specific surface area method from the plot t--Emmett. Preferably, V _meso of the porous aluminosilicate is 0.05 cmVg or more or 0.05 to 1.0 cmVg may be advantageous for the expression of various properties according to the present invention. Specifically, V _meso is 0Ό5 cmVg or more, or At least 0.09 cmVg, or at least 0.1 cmVg, or at least 0.15 cm ³ / g, or at least 0.2 cmVg, or at least 0.25 cmVg, or at least 0.5 cm ³ / g; 1.0 cmV or less, black may be 0.6 cm ³ / g or less, black may be 0.55 cm ³ / g or less.

In addition, Vmi _{cr... Of} the porous aluminosilicate may be more than 0Ό1 cmVg or 0.01 to 0.5 cm ³ / g, which may be advantageous for expression of various properties according to the present invention. Specifically, the Vndcro is 0.01 cmVg or more, or 0Ό3 cmVg or more, or 0.06 cmVg or more, or 0.09 cm ³ / g or more, 0.1 cm ³ / g or more, or 0.15 cm or more, or 0.2 cmVg or more, or 0.25 cm ³ / g or greater; 0.5 cmVg or less, black may be 0.3 cm ³ / g or less, black may be 0.28 cmVg or less.

And, the expression of _Vmeso and V ^ icr. Total specific volume of pores that are defined as the volume V _total is overall characteristics according to the invention that the at least 0.3 cmVg black is coming from 3 to 0.8 cmVg of having the porous aluminosilicate May be more advantageous. Specifically, the Vtotai may be 0.3 cm ³ / g or more, black is 0.32 cm ³ / g or more, or 0.34 cmVg or more; 0.8 cm ³ / g or less, or 0.7 cm ³ / g or less, black may be 0.65 cmVg or less.

Further, preferably, the porous aluminosilicate may have an argon adsorption Brunner-Emmett-Teller (BET) surface area of 200 to 850 m ² / g black or more than 200 rnVg. Specifically, the BET surface area may be 200 m ² / g or more, black 250 mVg or more, or 300 m ² / g or more, or 350 n / g or more, and black may be 370 mVg or more; 850 mVg or less, or 800 m ² / g or less, black may be 750 n / g or less, or 730 mVg or less. As a result of the experiments of the present inventors, when a moisture absorbing member including a porous aluminosilicate meeting the pore volume characteristics and the atomic ratio of Si / Al is applied to a washing machine, it is possible to reduce energy required for washing and drying strokes. Confirmed. This is due to the following principle. First, porous aluminosilicates exhibiting all the above-described characteristics, for example, pore volume characteristics, specific surface areas, and the like, are subjected to conditions in a drying duct of a washing machine. Under the conditions of normal temperature and high humidity, excellent moisture absorption characteristics can be exhibited and high moisture absorption can be exhibited. Therefore, the drying process of the laundry can be appropriately performed by using the hygroscopic member including such porous aluminosilicate.

In addition, the moisture absorption process of the porous aluminosilicate corresponds to the exothermic reaction, so that the heat of adsorption generated at this time may be used for heating the air for drying. Therefore, it is possible to greatly reduce the energy used or lost in the drying stroke, or to proceed with the drying stroke substantially without additional energy input.

For example, the porous aluminosilicate is 25 ^° C and under a relative humidity of 95%, the moisture absorption amount, which is defined by the following formula 1, which is included in one embodiment the moisture absorption member (%; 25 ^° C, 95% RH) 22 The moisture absorption amount may be excellent as much as% or more or 22 to 50%, and the heat of adsorption may also be generated according to the high moisture absorption amount. Therefore, the moisture absorbing member of this embodiment can be preferably used in the drying stroke of the washing machine to exhibit an energy saving effect:

[Equation 1]

Moisture absorption (%; 25 ^° C., 95% RH) = [W (g) / AS (g)] * 100 In formula 1, AS (g) represents the weight of the porous aluminosilicate, W

(g) shows the weight of the water absorbed to the maximum by the porous aluminosilicate when the moisture absorption was carried out using the porous aluminosilicate of AS (g) at ^{25 °} C and a relative humidity of 9 ⁵ %. On the other hand, after carrying out a drying process using the said moisture absorption member, it is necessary to go through the process of dehumidifying the moisture absorbed from such a moisture absorption material. By the way, it was confirmed that the moisture absorbing member of one embodiment, in particular, the porous aluminosilicate satisfying the above-described atomic ratio range and pore volume characteristic of Si / Al, can achieve a significant natural dehumidification simply by lowering the relative humidity. In particular, the stratified V _meso range of 0.05 cmVg or more or 0.05 to 1.0 cm ³ / g. Accordingly, the rate of natural dehumidification can be further increased. For example, the porous aluminosilicate included in the moisture absorption member of one embodiment has a relative moisture absorption ratio of 1.2 or more, black is 1.22 to 5.0, black is 1.24 to 3.0, and the relative humidity is 95. By lowering from 50% to 50%, very high levels of spontaneous dehumidification (e.g., about 30% or more) can be achieved without extra energy input:

[Equation 2]

Moisture absorption ratio by relative humidity = moisture absorption (%; 25 ^° C, 95% RH) / moisture absorption (%; 25 ^° C, 50% RH) In equation 2, moisture absorption (%; 25 ^° C, 95% RH ) Represents the moisture absorption defined by the above formula 1, the moisture absorption amount (%; 25 ^° C, 50% RH) is lowered from 95% to 50% relative humidity when dehumidification from the porous aluminosilicate, The moisture absorption calculated according to the formula [Wl (g) I AS (g)] * 100, Wl (g) represents the weight of the water absorbed maximum by the porous aluminosilicate of AS (g) after dehumidification proceeds. . Accordingly, the moisture absorbing member of the embodiment can also reduce the amount of energy used to dehumidify moisture from the drying stroke once. On the contrary, when the porous aluminosilicate that does not satisfy the characteristics of the embodiment is applied, it is confirmed that energy consumption is inevitably increased due to relatively poor dehumidification.

In addition, a certain level of heat storage may occur in the process of dehumidifying the moisture absorbing member of the embodiment, and the heat storage may be applied as energy for heating water in the washing stroke. Therefore, in this respect, the moisture absorbing member of the embodiment can achieve a large energy saving effect by reducing energy use or loss of the washing machine. On the other hand, the porous aluminosilicate exhibiting the above-described characteristics has previously been Among the commercially available porous aluminosilicates, those showing gastric properties may be selected and used, or may be manufactured and used directly. For example, as such porous aluminosilicates, porous aluminosilicates in the form of zeolites in which cations of alkali metals, alkaline earth metals or transition metals such as Ca cations, Na cations, K cations or Fe cations are bonded to the anions of aluminosilicates. Can be used.

Specifically, the porous aluminosilicate may be represented by Formula 1 below:

[Formula 1]

M _x SiAl _y Oa (OH) b (H ₂ 0) c In Chemical Formula 1, M represents an alkali metal, an alkaline earth metal or a transition metal, X and y each independently represent a positive number, and a, b and c are A number of zero or more is represented (where a + b is a positive number).

In Formula 1, M may be Ca, Na, K, or Fe, and X, y, a, b, and c may be determined in consideration of the valence of each constituent element or ion.

Preferably, the atomic ratio of Si / Al in the porous aluminosilicate is 15 or less, or more than 1 and 15 or less, it may be advantageous for the above-mentioned expression. Specifically, the atomic ratio of Si / Al may be 15 or less, black may be 13.5 or less, or 13 or less, and black may be 12.5 or less; Greater than 1.0, black may be 1.1 or greater, or 1.2 or greater. In a specific example, examples of the commercially available porous aluminosilicate include BEA type or 13X type zeolite.

In addition, suitable methods for producing porous aluminosilicates exhibiting the above-mentioned characteristics include a method of preparing by coupled reaction of the coupled alumino-mediated dissolution and precipitation of the porous aluminosilicate precursor in an aqueous medium. At this time, as silicon sources (humide silica, silicate, aluminosilicate, clay, mineral, metakaolin, activated clay, fly ash, slag, pozzolane, etc. may be used. As aluminum sources, alumina, aluminate, aluminum salt, clay, metakaolin, activated clay, fly ash, slag, pozzolane, and the like may be used.

As a non-limiting example, according to an embodiment of the invention, the porous aluminosilicate is i) added to a basic or alkaline solution (e.g. sodium hydroxide solution) and stirred with the addition of a silicon source, an aluminum source and water to a specific metal atom ratio ( Forming a geopolymer resin that satisfies, for example, Na: Al: Si = 3: l: 2); ii) heat treating the geopolymer resin at low temperature (eg, 60 to 80 ^° C.) under atmospheric pressure; And iii) washing and neutralizing the heat treated geopolymer resin. In particular, according to an embodiment of the present invention, the above-described heat treatment is performed by heat treating a geopolymer resin satisfying a specific metal atomic ratio under atmospheric pressure and low temperature (for example, 60 to 80 ^° C., preferably 65 to 75 ^° C.). Porous aluminosilicates exhibiting properties can be obtained.

On the other hand, the porous aluminosilicate exhibiting the above-described characteristics can be used as a moisture absorbing member of one embodiment by itself, or by adding an appropriate additive or the like can be prepared and used the moisture absorbing member of one embodiment. At this time, the kind of the additive which can be used is not particularly limited, and any additive known to be included in the hygroscopic member can be used. On the other hand, referring to Figure 2, a washing machine according to an embodiment of the invention

A cabinet 10 having a laundry inlet,

A door 11 installed to be opened and closed at the laundry inlet;

Tub 20 installed to store the wash water in the cabinet,

A drum 22 rotatably installed in the tub,

A motor 50 installed in the tub and transmitting a driving force to the drum, and fixed to an outer circumferential surface of the upper side of the tub, and both ends of which are connected to an inlet and an exhaust port of the tub to circulate hot air into the drum And duct 60.

In particular, in the drying duct 60, a moisture absorbing member 65 including the porous aluminosilicate, a heater 63 attached to an outer circumferential surface of the moisture absorbing member to heat the moisture absorbing member and air, and a blower for circulating air. The fan 67 is built in.

The washing machine according to the embodiment of the present invention shown in FIG. 2 further includes a moisture absorbing member 65 provided in the drying duct 60, as compared with the conventional washing machine shown in FIG. 1, and includes a male duct 70 and a water supply nozzle. Does not include (75).

In the general washing machine of FIG. 1, the expansion duct 70 is a means for lowering humidity by condensing low temperature and humid air discharged from the drum 22 when performing a drying stroke, and the water supply angle supplied through the water supply nozzle 75. Flow.

By the way, the washing machine according to the embodiment of the present invention is provided with a moisture absorbing member 65 including porous aluminosilicate that meets the above-described characteristics, and can exhibit excellent moisture absorption characteristics under high humidity conditions. It is possible to carry out the construction stroke without any means of estimating.

In particular, the moisture absorption process of the porous aluminosilicate included in the moisture absorption member 65 corresponds to the exothermic reaction, so that the heat of adsorption generated at this time can be used for heating the air for performing the drying stroke. Thus, the energy used or lost in the drying stroke can be greatly reduced, or the drying stroke can be carried out substantially without extra energy input.

In addition, the porous aluminosilicate that meets the above-described characteristics can be subjected to significant natural dehumidification only by lowering the relative humidity. Therefore, natural dehumidification can be made from the moisture absorption member 65 when the relative humidity becomes low after completion of a drying stroke. If necessary, the heater 63 and the blower fan 67 may be operated in the washing stroke so that dehumidification of the moisture absorbing member 65 may be performed.

In addition, the heat accumulation may occur in the dehumidification process of the porous aluminosilicate included in the moisture absorbing member 65, and the heat storage may also be used as energy for heating water in the washing stroke.

The moisture absorbing member 65 includes the above-mentioned porous aluminosilicate. As, for example, the porous aluminosilicate may be layered in any container.

In addition, the moisture absorbing member 65 may be mounted inside or on one sidewall of the drying duct 60. For example, the moisture absorbing member 65 may be provided inside the drying duct 60 in a state in which the moisture absorbing member 65 is coupled to the heater 63, in which a flow path of humid air circulated by the blowing fan 67 is absorbed. It may be provided at a position capable of penetrating or contacting the member 65. According to an embodiment of the present invention, the washing machine may selectively or continuously perform a washing stroke, a rinse stroke, a dewatering stroke, and a drying stroke in the following manner with reference to FIG. 2.

First, the user opens the door 11, puts laundry into the drum 22 and closes the door 11 to seal the drum 22. When the washing stroke starts, the water supply device 15 waters the water. The water supplied is heated by the heater 17, mixed with the detergent of the detergent container 12, and then supplied into the tub 20, and introduced into the drum 22 through the through hole and wetted with laundry. Then, in the washing machine through the contaminated water drain hose (83) in the tub 20 by the then motor 50 is driven is set laundry ^'time the drum 22 rotates to come over, the drain pump (80) outside Drained. During this washing process, power may be applied to the heater 63 and the blowing fan 67 in the drying duct 60 to dehumidify the moisture absorbing member 65 as necessary. The male heat generated in the dehumidification process of the moisture absorbing member 65 may be introduced into the drum 22 and used as energy for heating water. When the rinse stroke starts, clean water is supplied into the tub 20 through the water supply device 15, and the motor 50 is driven for the set rinse time. When the rinse setting time has elapsed, the motor 50 is stopped, the drain pump 80 is pumped, and the water containing bubbles in the tub 20 is drained out of the washing machine through the drain hose 83. When the dehydration stroke is started, the motor 50 is driven to set the drum 22 at high speed for the set dehydration time. The laundry in the drum 22 is dehydrated by centrifugal force. At this time, the drain pump 80 is pumped so that the water discharged from the laundry is drained to the outside of the washing machine through the drain hose 83. When the drying stroke is started, power is applied to the heater 63 and the blowing fan 67 of the drying duct 60, and the generated hot air is introduced into the drum 22 by the guide of the drying duct 60. . The hot air in the drum 22 is converted into low temperature and humid air while the laundry is heated and dried, and the low temperature and humid air is discharged to the drying tuft 60 through the exhaust port of the tub 20. Here, the low temperature means a temperature (for example, room temperature) lower than the temperature of the air heated by the heater. The low temperature and humid air supplied to the drying tuck 60 is circulated by the blowing fan 67 toward the moisture absorbing member 65, and loses moisture by moisture absorption at the moisture absorbing member 65 and is dried. This series of steps is repeated to dry the laundry.

As described above, in the dehumidification process of the moisture absorbing member 65 by simultaneously operating the heater 17 for heating the water in the washing stroke during the driving of the washing machine and the heater 63 for the dehumidifying the moisture absorbing member 65. The generated heat storage can be used additionally. In particular, as the heat of adsorption (e.g., 0.17 kWh per unit weight (kg) of the porous aluminosilicate) is generated by the moisture absorption in the moisture absorption member 65 in the drying stroke, separate expansion means (e.g., the expansion duct) The drying stroke can be carried out without.

【Effects of the Invention】

The washing machine according to the present invention enables saving of energy required for washing and drying strokes.

[Brief Description of Drawings]

1 is a side cross-sectional view schematically showing the internal structure of a general washing machine,

2 is a side cross-sectional view schematically showing the internal structure of a washing machine according to an embodiment of the present invention.

[Specific contents to carry out invention]

Hereinafter, preferred embodiments will be presented to aid in understanding the present invention. However, the following examples are only for illustrating the present invention, the present invention It is not limited only to these. Example 1

3.02 g of NaOH was added to the reactor, and 5.43 g of tertiary distilled water was added and mixed well. 76 g of sodium silicate (~ 1 6% Na ₂ 0, -26.5% Si0 ₂ ) was added to the solution, and the mixture was stirred at 800 rpm at room temperature to completely dissolve it. 3.8 g of metakaolin was added to the solution thus prepared, and stirred at 800 rpm for 40 minutes at room temperature to obtain a geopolymer resin having an atomic ratio Na: Al: Si of about 3: 1: 2.

The geopolymer resin was heated in Aubon for one day under atmospheric pressure and 70 ^° C. to obtain a geopolymer resin of pH 14 level. Distilled water was added to the heat-treated geopolymer resin in an amount of tertiary distilled water, and the resultant was centrifuged at 10000 rpm for 5 minutes to decantation the clear supernatant at pH 14. This washing, centrifugation and decantation steps were repeated until the supernatant was at pH 7 level. The neutralized geopolymer resin was dried overnight in a vacuum oven at 80 ° C. to obtain the final product, porous aluminosilicate. Example 2

Zeolyst BEA type zeolite (trade name: CP814E) was prepared in Example 2. Example 3

Zeolite 13X type zeolite (product name: CX) LITE-MS80) from Cosmo Fine Chemicals was prepared in Example 3. Comparative Example 1

Zeolyst ZSM-5 type zeolite (product name: CBV8014) was prepared in Comparative Example 1. Test Example 1

General Examples of Aluminosilicates of Comparative Examples The measurement is shown in Table 1 below.

Si / Al atomic ratio was analyzed using ICP-OES Optima 7300DV. Specifically, samples were collected in a corning tube (50ml) for Si / Al atomic ratio analysis, and then static electricity was removed with an electrostatic gun. Hydrochloric acid and hydrofluoric acid were added to the sample to dissolve it, and the solution was diluted with ultrapure water. After taking 1 ml of this solution, supersaturated boric acid and scandium (Sc) were added as internal standards, and then diluted with ultrapure water. Standard solutions were prepared with Blank, 1 g / ml, 5 g / ml, 10 pg / ml. The Si / Al atomic ratio of the ultra diluted solution was analyzed by the ICP-OES Optima 7300DV.

Table 11

BET (in ² / g): the Brunauer-Emmett-Teller (BET) surface area

Vmeso (cin ^J / g): Barrett-Joiner-Halenda (BJH) cumulative volume for mesopores with a pore size of 2 to 300 nm

-

(Clrf / g): volume of micropores with pore size less than 2 nm calculated by t-plot method from argon adsorption Brunner-Emmett-Teller (BET) surface area -Vtotai (cin ³ / g): Total pore volume Test Example 2

(Calculate energy requirement when applied to washing machine)

Figure 2 kg of each aluminosilicate according to the Examples and Comparative Examples

It applied to the washing machine of 2 as the moisture absorption member 65, and advanced washing and drying process. The water (washing water) used for washing was 7 L, and the washing was performed by raising the temperature from the initial temperature of 15 ^° C to 40 ^° C. The amount of laundry was 3 kg. And, 0.5 kg of water was dried and removed at the time of drying, and for this purpose, the temperature was raised from 30 ^° C to 60 ^° C. Energy requirements were calculated during this washing and drying process. In addition, the energy requirement in the washing and drying stroke (Comparative Example 2; ie, the same method as the conventional washing and drying stroke without using the hygroscopic member) under the same conditions, except that aluminosilicate was not applied, was calculated as follows. Table 2 summarizes them.

[Table 2]

Examples Examples Examples Comparative Examples Comparative Examples

1 2 3 1 2

(kWh) (kWh) (kWh) (kWh) (kWh) Washing Absorbent Dehumidification 0.22 0.13 0.27 0.28 0 Energy A for Stroke

Washing water heating (heating) 0.20 0.20 0.20 0.20 0.20 Energy required

Hygroscopic material heat storage -0.08 -0.09 -0.07 -0.03 0 Saving by application

energy

Dry air takes heating (temperature rise and 0.34 0.34 0.34 0.34 0.35 stroke drying)

Energy £

Absorbent heat of absorbent -0.34 -0.34 -0.34 -0.34 0 Saving by application

energy 0.03 0.03 0.03 0.03 0.03 Basic energy required for operating and maintaining the washing machine

Total energy requirement 0.37 0.27 0.43 0.48 0.58

A. Energy for desiccant dehumidification = {[Required energy under the assumption that there is no natural dehumidification (0.34 kWh / 2 kg absorbent)]-[Energy saving by natural dehumidification rate]};

* '' Energy savings from natural dehumidification rates ":

(1) Example 1: 0.34 kWh absorbent * 35% = 0.12 kWh

(2) Example ² ： 0.34 kWh absorbent * 63% = 0.21 kWh

(3) Example 3: 0.3 ⁴ kWh absorbent * 20% = 0.07 kWh

(4) Comparative Example l: 0.34 kWh Absorbent * 19% = 0.06 kWh

B. Washing water heating (heating) energy = energy for raising 7 kg of water from 15 ^° C to 40 ^° C;

C. Energy savings due to the use of humectant heat storage = [(moisture absorption (%; 25 ^° C, 95% RH))-(moisture absorption (%; 25 ^° C, 0% RH))] * heat of vaporization (40 ^°) C) * (1-natural dehumidification rate)

D. Air heating (drying) energy requirements:

(1) Examples 1,2,3 and Comparative Example 1 = heat of vaporization (30 ^° C)

(2) Comparative Example 2 = air heating required energy (30-> 60 ^° C) + heat of vaporization (60 ^° C) Referring to Table 2, in the case of Examples 1 to 3, compared to Comparative Examples 1 and 2, It was found that the energy saving effect of the width was shown.

[Explanation of code]

10: cabinet

11: door

12: detergent container 15: watering device

17: water heater

20: Tub

22:-

50: motor

60: drying duct

63: air heater

65: ᄇ 丁丁 세

67:

70: Eunchon The Dungeon

75: water supply nozzle

80: drain pump

83: drain hose

Claims

[Claim]

[Claim 11

Washing machine equipped with a hygroscopic member comprising a porous aluminosilicate having an atomic ratio of Si / Al of 15 or less and a total specific volume ¼ _ota i of pores defined by the volume sum of V meso and Vmicro of 0.3 cmVg or more:

V ^ cro is the volume of micropores having a pore size of less than 2 nm calculated by t-plot method from argon adsorption Brunner-Emmett-Teller (BET) surface area.

[Claim 21]

The method of claim 1,

A cabinet 10 having a laundry inlet,

A door 11 installed to be opened and closed at the laundry inlet;

Tub 20 installed to store the wash water in the cabinet,

A drum 22 rotatably installed in the tub,

A motor 50 installed in the tub and transmitting a driving force to the drum, and a drying duct fixed to an upper circumferential surface of the tub and having both ends connected to an inlet and an exhaust port of the tub to circulate hot air into the drum ( 60);

In the drying duct 60, a moisture absorbing member 65 including the porous aluminosilicate, a heater 63 attached to an outer circumferential surface of the moisture absorbing member and heating the moisture absorbing member and air, and a blowing fan for circulating air ( 67) built-in washing machine.

[Claim 3]

The method of claim 1,

V _meso of the porous aluminosilicate is 0.05 cmVg or more, washer.

[Claim 4]

The method of claim 1,

The porous aluminosilicate has a moisture absorption amount (%; 25 ° C., 95% RH) defined by the following Equation 1 at 25 ^° C. and 95% relative humidity of 22% or more, and a relative humidity defined by Equation 2 below. Washing machine with star moisture absorption ratio of 1.2 or more:

[Expression]

Moisture Absorption (%; 25 ^° C, 95% RH) = [W (g) / AS (g)] * 100

[Equation 2]

Relative humidity by the moisture absorption amount ratio of moisture-absorbing amount (%; C 25 ^°, 95% RH) / absorption capacity (%; C 25 ^°, 50% RH)

In Equation 1, AS (g) represents the weight of the porous aluminosilicate, W (g) was subjected to moisture absorption using the porous aluminosilicate of AS (g) at 25 ^° C and 95% relative humidity When the porous aluminosilicate shows the weight of the water absorbed to the maximum,

In Equation 2, the moisture absorption amount (%; 25 ^° C, 95% RH) represents the moisture absorption amount defined by Equation 1, and the moisture absorption amount (%; 25 ^° C, 50% RH) represents a relative humidity of 95% to 50%. When dehumidifying from the porous aluminosilicate and lowering to, Wl (g) I AS (g)] represents the moisture absorption calculated according to the formula of [100], Wl (g) represents AS (g) The porous aluminosilicate of shows the weight of the water which the maximum absorbed.

[Claim 5]

The method of claim 1,

Wherein said porous aluminosilicate has an argon adsorption Brunner-Emmett-Teller (BET) surface area of at least 200 rnVg.

[Claim 6]

The method of claim 1, The porous aluminosilicate is a compound represented by the following Formula 1, washing machine:

[Formula 1]

M _x SiAl _y Oa (OH) b (H ₂ 0) c

In Formula 1, M represents an alkali metal, an alkaline earth metal or a transition metal, X and y each independently represent a positive number, and a, b and c each represent a number of 0 or more (where a + b is positive). ).