JP2018176007A - Dehumidifier, and refrigerator or freezer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress leakage of heat from a clearance between an absorbent and a through hole to an outside of a housing.SOLUTION: A dehumidifier includes a rope-like absorbent 1 which has an absorbent which can bend in any directions of a plane vertical to an axial direction and an absorption material held by the absorbent, a drive device 2a for moving the rope-like absorbent 1, and a regeneration device 3 which removes moisture from the rope-like absorbent 1. Thereby, through holes 4a, 4b of a housing 10 can be made small, and heat leakage from a clearance between the absorbent and the through hole can be suppressed.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a dehumidifying device for adsorbing moisture in a housing and then releasing it outside the housing.

  A dehumidifier using a method of adsorbing moisture in the air with a disk-like adsorbent (desiccant rotor) carrying an adsorbent and thereafter releasing the adsorbed moisture by heating or the like is widely used. For example, Patent Document 1 discloses the following refrigeration apparatus. In order to adsorb water in a refrigerator or freezer, a part of a disk-shaped adsorbent, which is a water adsorption means, is installed to pass through the inside of a refrigerator or freezer to supply air from which water is removed to an evaporator. In order to dehydrate and regenerate the moisture absorbed on the other hand, a part of the disk-like adsorbent is installed so as to pass through the outside of the refrigerator or freezer, and the high temperature air heated by the condenser (radiator) is circled. Supply to plate adsorber. FIG. 6 is a schematic view showing the configuration of a conventional dehumidifier.

  The dehumidifying device includes an adsorbent that absorbs and desorbs water, and a part of the dehumidifying device rotates on the wall of the housing so that a part of the adsorbent faces the inside of the housing 100 of a refrigerator or freezer and another part faces the outside of the housing 100. The disk-shaped adsorber 101 installed possible, the drive device 102 for rotating the disk-shaped adsorber 101, the evaporator 13 installed inside the case 100, and the case installed outside the case 100 A flocculator 14, an evaporator fan 15 for circulating the air in the housing 100, and a flocculator fan 16 for blowing outside air to the disk-shaped adsorber 101 are provided.

  By sending the air in the housing 100 to the portion of the disk-shaped adsorbent 101 opposed to the evaporator fan 15, the disk-shaped adsorbent 101 adsorbs the water in the housing 100. As the disk-shaped adsorber 101 is rotated by the drive device 102, the portion of the housing 100 where the water is adsorbed moves to the outside of the housing 100. Then, the portion of the disc-like adsorbent 101 to which water is adsorbed is opposed to the aggregator 14 outside the housing. The high temperature air which has passed through the coagulator 14 by the agglomerator fan 16 desorbs the adsorbed water by heating the disc-shaped adsorbent 101, thereby regenerating the adsorbent.

WO 2008/084528

  However, such a conventional dehumidifier has the following problems. That is, it is necessary to open a through-hole in the wall of the freezer in order to install the disc-shaped adsorbent. The disk-like adsorber is installed in such a manner as to be inserted into the through hole, but in order for the disk-like adsorber to rotate, it is necessary to provide a gap between the disk-like adsorber and the wall. Outside air comes in contact with the cold air in the housing through the gap, and moisture contained in the outside air freezes around the gap. As a result, the case wall and the disk-like adsorber stick and become immobile.

  In order to avoid this, the means to install a heater near a crevice and to prevent freezing can be considered. However, since the through hole for installing the disk-like adsorber needs to have a certain size, the peripheral length of the through hole becomes long. Therefore, the heat outside the housing intrudes from the peripheral portion of the through hole, and the temperature in the cross housing rises. Alternatively, for example, in the case of preventing freezing by a heater, the heat generated near the through hole increases. As a result, part of the heat is transferred to the inside of the housing, and the temperature in the housing rises. As a result, there is a problem that the cooling efficiency is reduced.

  The dehumidifier of the present invention uses a rope-like adsorber.

  According to the configuration of the present invention, since the peripheral length of the through hole is shortened, it is possible to suppress the temperature rise in the housing.

Schematic block diagram of the dehumidifying device according to the first embodiment The schematic block diagram of the dehumidification apparatus based on Embodiment 2 Schematic block diagram of the dehumidifying device according to the third embodiment (A) Schematic block diagram of a rope-like adsorber according to a modification, (b) perspective view of adsorber piece Schematic block diagram of another rope-like adsorber according to a modification Schematic configuration diagram showing a conventional dehumidifier

  A first invention is a dehumidifier comprising a rope-like adsorbent having an adsorbent, a driving device for moving the rope-like adsorbent, and a regenerating device for removing water from the rope-like adsorbent.

  In a second aspect based on the first aspect, the rope-like adsorber is an endless body.

  According to a third aspect of the present invention, in the first or second aspect, the rope-like adsorptive body is an adsorptive body which can be bent in any direction of a plane perpendicular to the axial direction, and an adsorptive material supported by the adsorptive body. And.

  According to a fourth invention, in any one of the first to third inventions, the rope-like adsorber has a plurality of adsorber pieces and a connecting means for connecting the adsorber pieces.

  According to a fifth invention, in the fourth invention, the connection means is a belt-like belt, and the adsorber piece sandwiches the connection means.

  According to a sixth invention, in the fourth or fifth invention, the adsorbent piece has an adsorbent and a base material for supporting the adsorbent.

  7th invention is a refrigerator provided with the dehumidification apparatus of any one invention of 1st-6th.

  An eighth invention is a freezer comprising the dehumidifying device of any one of the first to sixth inventions.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The present invention is not limited by the embodiment.

Embodiment 1
FIG. 1 is a schematic block diagram of the dehumidifying device according to the first embodiment. In this embodiment, an example of dehumidifying the inside of the housing 10 is shown. The dehumidifier comprises a rope-like adsorber 1, a drive device 2 and a regenerator 3. The housing 10 is provided with the through hole 4. The housing 10 is, for example, a housing of a refrigerator or a freezer.

One end of the rope-like adsorber 1 is inserted into the inside of the housing 10 through the through hole 4, and the other end is connected to the drive device 2. The driving device 2 is, for example, an electric motor that can rotate in both directions, and is provided on the top of the housing 10. The driving device 2 includes a winding unit, and can wind the rope-like adsorber 1. A part of the rope-like adsorber 1 is covered by the regeneration device 3. The playback device 3 is provided between the drive device 2 and the housing 10. The reproduction device 3 includes, for example, a heating mechanism. The regeneration device 3 is provided with a discharge mechanism (not shown) for discharging the water generated from the rope-like adsorbent 1 to the outside. The rope-like adsorber is taken in and out of the inside of the housing 10 through the through hole 4 by the drive device 2.

  The rope-like adsorbent 1 is a continuous body composed of at least an adsorbent and a binder. More specifically, the rope-like adsorbent 1 is provided with a bendable adsorbent (rope) and an adsorbent carried by the binder on the adsorbent in any direction of a plane perpendicular to the axial direction. The shape of the cross section in a plane perpendicular to the axial direction of the rope is not limited. The shape of the cross section may be, for example, a circle, an ellipse, a rectangle, or a polygon.

  Next, the operation of the dehumidifier will be described. The driving device 2 is operated so that the rope-like adsorber 1 wound around the driving device 2 is inserted into the inside of the housing 10 through the through hole 4. The rope-like adsorbent 1 inserted into the inside of the housing 10 adsorbs moisture present inside the housing 10. The amount of water adsorbed by the rope-like adsorbent 1 is adjusted to the amount of water removed from the inside of the housing 10, and the amount of water adsorbed per unit weight of the adsorbent constituting the rope-like adsorbent 1 and the amount of adsorbent carried It can be set by adjusting.

  After adsorbing the moisture corresponding to the moisture adsorption amount of the rope-like adsorbent 1 set in advance, the driving device 2 is operated to wind up the rope-like adsorbent 1. At the same time, when the rope-like adsorber 1 passes through the regenerating apparatus 3, the regenerating apparatus 3 releases, for example, the moisture adsorbed to the rope-like adsorber 1 by heating. The rope-like adsorbent 1 having released the moisture is taken up by the drive device 2. The water released by the regenerating apparatus 3 is discharged out of the regenerating apparatus 3 through the discharge mechanism.

  When the end of the rope-like adsorber 1 reaches the regeneration device 3, the drive device 2 is operated so that the rope-like adsorber 1 passes through the through hole 4 and enters the inside of the housing 10 again. The loading and unloading of the rope-like adsorbent 1 may be carried out continuously or intermittently.

  According to the configuration of the present embodiment, the through holes 4 installed in the housing 10 can be made smaller than in the case where a part of the disk-like adsorbent is inserted into the inside of the housing to absorb and desorb water. As an example, Table 1 shows a comparison between a rope-like adsorber and a disc-like adsorber having the same volume.

  In Table 1, the through hole peripheral lengths are compared so that the volumes of the respective adsorbents become the same. The reason for this is that the water adsorption amount of the adsorbent is proportional to the volume. In Table 1, the through hole peripheral length is the length of the periphery of the through hole required to mount each adsorber on the housing 10. For example, in the case of a disc-like adsorber, it is the peripheral length of the cross section when the diameter is cut in a plane parallel to the central axis of the disc, and in the case of a rope-like adsorber, when cut in a plane perpendicular to the axial direction of the rope. It is a circle.

  In the present embodiment, only one through hole is required to install the rope-like adsorber. Therefore, as shown in Table 1, the through hole peripheral length of the rope-like adsorbent is about 1/10 of that of the disk-like adsorbent. Therefore, the amount of outside air entering from the periphery of the through hole 4 is smaller in the case of using the rope-like adsorbent 1 than in the case of using the disk-like adsorbent. Alternatively, for example, when the case 10 is a freezer, the amount of ice generated by freezing around the through holes 4 is smaller in the case of using the rope-like adsorbent 1 than in the case of using the disk-like adsorbent. .

Second Embodiment
FIG. 2 is a schematic block diagram of the dehumidifying device according to the second embodiment. In the present embodiment, the housing 10 is provided with two through holes 4 a and 4 b.

  The rope-like adsorber 1 is held at its central portion by the pulley 5a and the drive device 2a. The driving device 2a is, for example, an electric motor that can rotate in both directions, and is provided outside the housing 10, specifically, at the top. The drive device 2a includes a pulley portion, and can move the rope-like adsorber 1 in the axial direction. The pulley 5 a is provided on the top of the housing 10. It is desirable that the pulley 5a and the drive device 2a be disposed at separate positions.

  One end of the rope-like adsorber 1 is inserted through the through hole 4a and the other end thereof is inserted into the inside of the housing 10 through the through hole 4b. The rope-like adsorber 1 is taken in and out of the housing 10 by the drive device 2 and the pulley 5a. The reproduction device 3 is installed between the drive device 2a and the pulley 5a.

  Next, the operation of the dehumidifier will be described. A part of the rope-like adsorber 1 is inserted into the housing 10 through the through hole 4a. The portion of the rope-like adsorbent 1 inside the housing 10 adsorbs the moisture inside the housing 10. When it is detected that the water is sufficiently adsorbed to the portion inserted into the inside of the housing 10, the drive device 2a is rotated. By rotation of the driving device 2 a, the portion inserted into the inside of the casing 10 of the rope-like adsorber 1 passes through the through hole 4 a, is pulled out from the inside of the casing 10, and passes through the reproduction device 3. As a result, the moisture adsorbed to the pulled out portion of the rope-like adsorbent 1 is released. At this time, the through hole 4 b side of the rope-like adsorber 1 passes through the through hole 4 b and is inserted into the inside of the housing 10.

  When it is detected that a portion of the rope-like adsorber 1 inserted into the inside of the casing 10 through the through hole 4 b has sufficiently absorbed moisture, the casing 10 of the rope-like adsorber 1 is rotated by reverse rotation of the drive device 2 a. The portion inserted into the inside of the housing passes through the through hole 4 b, is pulled out from the inside of the housing 10, and passes through the playback device 3. As a result, the moisture adsorbed to the pulled out portion of the rope-like adsorbent 1 is released. At this time, the rope-like adsorber 1 is inserted into the casing 10 through the through-hole 4 a again on the through-hole 4 a side of the rope-like adsorber 1.

  By periodically repeating the above operation, one end of the rope-like adsorbent 1 can perform adsorption inside the housing 10.

In the present embodiment, when it is detected that the moisture is sufficiently adsorbed to the portion of the rope-like adsorber 1 inserted into the inside of the housing 10, the drive device 2a detects the relevant portion as the regenerating device 3
However, the drive device 2a may move the portion to the playback device 3 after a predetermined time has elapsed.

  In the configuration of the present embodiment, the number of through holes is two, and the peripheral length of the through holes is long. However, for example, as shown in Table 1, even when compared at the same volume, the through hole peripheral length of the rope-like adsorber is about 1⁄5 of that of the disc-like adsorbate. Therefore, the amount of outside air entering from the periphery of the through hole 4a or the through hole 4b is smaller in the case of using the rope-like adsorber 1 than in the case of using the disk-like adsorber. Alternatively, when the case 10 is a freezer, the amount of ice generated by freezing is smaller in the case of using the rope-like adsorbent 1 than in the case of using a disk-like adsorbent.

Third Embodiment
FIG. 3 is a schematic block diagram of the dehumidifying device according to the third embodiment. Also in the present embodiment, two through holes 4a and 4b are opened in the case 10, and the rope-like adsorber 1 passes through each. The rope-like adsorber 1 is an endless body. The rope-like adsorber 1 is held by the pulleys 5a to 5c and the drive device 2a.

  The pulleys 5 a and 5 b are installed inside the housing 10, specifically, below the inside of the housing 10. The pulley 5 c and the drive device 2 a are installed outside the housing 10, specifically, at the top. The drive device 2a may be an electric motor which can rotate in one direction.

  The rope-like adsorber 1 circulates the inside and the outside of the housing 10 by the driving device 2 and the pulleys 5a to 5c. The regeneration device 3 is installed so that a part of the rope-like adsorber 1 passes through.

  Next, the operation of the dehumidifier will be described. Since the rope-like adsorber 1 is an endless body, the drive device 2 a is operated to move in one of the axial directions of the rope-like adsorber 1. For example, drive unit 2a is operated to move in the direction of the arrow shown in FIG. The portion of the rope-like adsorber 1 which is inserted into the inside of the housing 10 through the through hole 4 a passes through the inside of the housing 10 through the pulleys 5 a and 5 b installed inside the housing 10. Do. At this time, the water inside the housing 10 is adsorbed. Thereafter, the portion of the rope-like adsorber 1 that has passed through the through hole 4 b and has come out of the casing 10 passes through the drive device 2 and then passes through the reproduction device 3. In the regenerating apparatus 3, the rope-like adsorbent 1 releases the adsorbed water. The portion of the rope-like adsorber 1 that has passed the regenerating apparatus 3 and has been regenerated passes through the pulley 5 c, passes through the through hole 4 a again, and is inserted into the inside of the housing 10.

  By this, the rope-like adsorber 1 can perform adsorption continuously inside the housing 10.

  Also in the configuration of the present embodiment, although there are two through holes, as shown in Table 1, as in the case of the second embodiment, penetration of the rope-like adsorber is possible even when comparing in the same volume. The hole perimeter is about 1⁄5 that of the disc adsorber. Therefore, the amount of outside air entering from the periphery of the through hole 4a or the through hole 4b is smaller in the case of using the rope-like adsorber 1 than in the case of using the disk-like adsorber. Alternatively, when the case 10 is a freezer, the amount of ice generated by freezing is smaller in the case of using the rope-like adsorbent 1 than in the case of using a disk-like adsorbent.

<Modification>
Another configuration of the rope-like adsorber will be described. The rope-like adsorber 1a is configured by connecting adsorber pieces by connecting means. Fig.4 (a) is a schematic block diagram of the rope-like adsorber which concerns on this modification, FIG.4 (b) is a perspective view of an adsorber piece. The adsorber piece 11 is
It is approximately disc-like. A hole is provided in the central portion of the adsorber piece 11, and a plurality of adsorber pieces 11 are connected to the connecting means 12 by fixing the holes through the connecting means 12 such as a wire.

  The method of fixing the adsorber piece 11 to the connecting means 12 is not limited. For example, the adsorber piece 11 can be fixed by holding it on a fixing ring provided in the connecting means 12. Moreover, the space | interval of adsorber piece 11 comrades may be set arbitrarily.

  The shape of the cross section in a plane perpendicular to the axial direction of the wire may be, for example, a circle, an ellipse, a rectangle, or a polygon.

  As described in the first to third embodiments, when the rope-like adsorbent 1 is a continuous body composed of an adsorbent and a binder, the water in the housing 10 penetrates into the inside of the rope-like adsorbent 1 It takes a long time and apparently the adsorption rate of the adsorbent is slow. Therefore, in order to effectively utilize the adsorbent present inside the rope-like adsorbent 1, it is necessary to take time to adsorb the water inside the housing 10.

  However, in the rope-like adsorbent 1a having a configuration in which the adsorbent pieces 11 are connected by the connecting means 12 as in the present modification, the surface area is larger than that of the rope-like adsorbent 1 formed as a continuous body. Therefore, even with the adsorbent inside the rope-like adsorbent 1a, it is possible to adsorb water at the adsorption rate of the adsorbent.

  The rope-like adsorber 1a may be connected at both ends to be an endless body.

  When the rope-like adsorbent is an endless body, by satisfying the formula (1), the adsorbent piece 11 such as the rope-like adsorbent 1 a is used rather than the continuous body like the rope-like adsorbent 1 In the case of the continuous body, the surface area can be increased.

  In the formula (1), when the rope-like adsorber is a continuum, S is a cross-sectional area when cut perpendicularly to the axis of the rope-like adsorber, and in the case of a continuum using adsorber pieces 11 In the above, it is the area of the adsorber piece 11 in a plane perpendicular to the axis of the rope-like adsorber. L is the circumferential length of the cross section of the adsorbent piece 11 in a plane perpendicular to the axis. X is the distance between the adsorbent pieces 11. By satisfying this condition, the surface area of the rope-like adsorbent 1a in which the adsorbent pieces 11 are connected becomes larger than that of the continuous rope-like adsorbent 1. This is advantageous for the adsorption of water.

For example, in the case of a rope-like adsorbent 1 described in Table 1, the rope diameter 2 cm, since the length 450cm rope surface area if continuum is 2826cm ^2. On the other hand, in the case where the disk-like adsorber piece 11 having a diameter of 2 cm and a thickness of 0.5 cm is provided, the area S of the adsorber piece 11 in the plane perpendicular to the axis of the rope-like adsorber is Since the square of radius 1 cm is multiplied by the circular ratio, the circumference L of the cross section of the adsorber piece 11 in the plane perpendicular to the axis is 3.14 cm ² , the diameter multiplied by the circular ratio And the distance X between the adsorbent pieces is smaller than 2 S / L = 1 cm according to the equation (1), the rope-like adsorptive body 1a constructed by connecting the adsorbent pieces 11 The surface area is greater than in the case of a continuum.

The surface area of the rope-like adsorber constituted of the adsorber pieces 11 is calculated by taking the case where X is 0.9 cm as an example. By dividing the length 450 cm of the rope-like adsorbent by 1.4 cm which is the length obtained by adding the thickness 0.5 cm of the adsorbent pieces 11 and the distance 0.9 cm between the adsorbent pieces, a rope-like adsorbent is obtained. The number of adsorbable pieces that can be installed is 321. Since the surface area of one adsorbent piece 11 is 9.42 cm ² , the surface area of the rope-like adsorbent is 3023.82 cm ² , which is larger than that of the continuous body.

  The thickness of the adsorbent pieces and the distance between the adsorbent pieces may be reduced even if the surface area is reduced by means for fixing the adsorbent pieces 11 by the connecting means 12, for example, the central hole in FIG. 4 (b). Set in consideration.

  Moreover, it is possible to apply Formula (1), even if the cross section of a rope-like adsorber is arbitrary shapes.

  The adsorbent piece 11 can be formed by mixing a binder with an adsorbent. In addition, the adsorbent piece 11 may support an adsorbent on a porous or honeycomb substrate. There is a limit to the size that can be produced in the honeycomb, and if it is disc-shaped, production is generally difficult if the diameter is 50 mm or less. Therefore, as an adsorbent piece to be used for a rope-like adsorbent having a small diameter, it is preferable that an adsorbent be supported on a porous substrate.

  The shape of the adsorbent piece 11 is not particularly limited, and may be a cylinder, a prism, a sphere, or a star. In addition, it may be shaped in accordance with the cross-sectional shape of the portion applied to the pulley, such as a trapezoidal shape in which one side contacting the center side of the pulley is smaller than the outside of the pulley. The shapes and sizes of the individual adsorber pieces 11 do not have to be the same, but it is desirable that they be as identical as possible from the viewpoint of passing through holes through a rope shape.

  The thickness of the adsorbent piece 11 and the size of the interval between the adsorbent pieces 11 are arbitrary, and can be set appropriately according to the surface area of the entire rope-like adsorbent 1a. From the viewpoint of increasing the surface area, although depending on the shape of the adsorbing piece 11, the thickness of the adsorbing piece 11 and the distance between the adsorbing pieces 11 are preferably as small as possible. In consideration of the strength of the material constituting the adsorbing piece 11, the thickness of the adsorbing piece 11 is preferably 0.1 mm or more.

  Further, the distance between the adsorber pieces 11 can be set by the height of a protrusion provided on a part of the adsorber piece 11.

  The connection means 12 can take any type as long as it can constitute a rope-like adsorber by connecting adsorber pieces. In FIG. 4, the rope-like adsorber 1a is configured by passing a wire which is a filament through the holes formed in the adsorber piece 11. However, as shown in FIG. 5, the continuous strip 12a is used as a connecting means. Alternatively, the notch provided at the end of the adsorbent piece 11 may be pinched. By using the strip-like continuum 12a made of a material resistant to twisting, such as a steel belt, for example, the rope-like adsorber 1a becomes more resistant to twisting in a specific direction, and the rope-like adsorber 1a in the pulley becomes It becomes possible to stabilize traveling. As shown in FIG. 5, a plurality of strip-shaped continuum 12a may be used.

  When a pulley or the like is used to change the traveling direction of the rope-like adsorber, the distance between the center of the pulley and the adsorber piece 11 with respect to the strip-like continuum in the thickness of the adsorber piece 11 By making it thinner according to the change of the running direction on the pulley becomes easy.

  The dehumidifying device according to the present invention can be installed even in a place where installation is difficult with the conventional disk-shaped adsorber because there are few places where the dehumidifying device is installed. For this reason, it is suitable for the application to a refrigerator or a freezer.

DESCRIPTION OF SYMBOLS 10, 100 Casing 1, 1a Rope-like adsorber 2, 2a, 102 Drive device 3 Regeneration device 4, 4a, 4b Through hole 5a, 5b, 5c Pulley 11 Adsorbent piece 12 Connection means 12a Continuum 13 Evaporator 14 Aggregation 15 Evaporator fan 16 Agglomerator fan

Claims (8)

  A dehumidifier comprising: a rope-like adsorbent having an adsorbent; a driving device for moving the rope-like adsorbent; and a regenerating device for removing water from the rope-like adsorbent.   The dehumidifier according to claim 1, wherein the rope-like adsorber is an endless body.   The dehumidifier according to claim 1 or 2, wherein the rope-like adsorber includes an adsorber which can be bent in any direction of a plane perpendicular to the axial direction, and an adsorbing material carried by the adsorber.   The dehumidifier according to any one of claims 1 to 3, wherein the rope-like adsorber has a plurality of adsorber pieces and a connecting means for connecting the adsorber pieces.   The dehumidifier according to claim 4, wherein the connection means is a belt-like belt, and the adsorber piece sandwiches the connection means.   The dehumidifier according to claim 4 or 5, wherein the adsorbent piece has an adsorbent and a base material for supporting the adsorbent.   A refrigerator comprising the dehumidifying device according to any one of claims 1 to 6. A freezer comprising the dehumidifying device according to any one of claims 1 to 6.

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