JPH10122699A - Adsorption core of adsorption refrigerating apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance an adsorption and desorption performance of an adsorption section in an adsorption core provided with the adsorption section between a plurality of heat transfer tubes. SOLUTION: An adsorption section 32 filled up with a large number of adsorption agents 34 is provided between a plurality of heat transfer tubes 26. An envelop-like metal net pipe 7 is laid out in this adsorption section 32, which feeds a refrigerant into the adsorption section 32 from the side exposed to the outside out of the adsorption section 32 and feed the refrigerant into the adsorption section by way of the mesh area 70 of the metal net pipe 7 passing by an internal space 7a of the metal net pipe 7 from the mesh area 70 of the metal net pipe 7. It is, therefore, possible to enhance the permeability of the refrigerant in the adsorption section 32 and enhance the adsorption and desorption function of the adsorption section 32.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an adsorption core of an adsorption refrigerating apparatus utilizing adsorption and desorption of a refrigerant such as water by an adsorbent.

[0002]

2. Description of the Related Art Conventionally, JP-A-6-2984 discloses
An adsorption core 11 of an adsorption refrigeration apparatus as shown in FIG. 15 has been proposed. The adsorption core 11 has a thin box shape and includes a plurality of heat transfer tubes 26 through which a cooling fluid or a heating fluid flows.
In addition, a plurality of plate-like fins 60 are arranged in a skewered manner.
Then, the outside of the fins 60 is covered with a wire mesh-shaped covering member 8, and a large number of adsorbents 34 are accommodated and held in the covering member 8. 32 are formed.

[0003] The adsorption core 11 is disposed in a closed container (not shown), and a refrigerant enters and exits through a refrigerant port of the closed container. And the suction core 1
When the cooling fluid flows into the first heat transfer tube 26, the adsorbent 32 is cooled and the adsorbent 34 adsorbs the refrigerant.
When the heating fluid flows into the inside, the adsorbing section 32 is heated, and the adsorbent 34 desorbs the refrigerant.

[0004]

The applicant of the present invention measured the adsorption and desorption performances of the above-mentioned conventional adsorption core and found that the performance was low. As a result of the study by the present inventors about the cause, the following has been found. First, the area of the surface of the suction core 11 perpendicular to the thickness direction cannot be made large for the purpose of reducing the size of the suction core 11. Then, in order to hold the adsorbent 34 capable of exhibiting a predetermined adsorption capacity, the thickness of the adsorption core and, consequently, the thickness of the adsorption section 32 are relatively large.

[0005] Therefore, the adsorbent 34 located at the center in the thickness direction of the adsorbing portion 32 is compared with the adsorbing portion 32 from the surface of the adsorbing portion 32 that can contact the refrigerant (the surface exposed to the refrigerant). Are placed at a long distance apart. For this reason, it becomes difficult to supply the refrigerant to the adsorbent 34 in the central portion, and the adsorption and desorption performance of the adsorbent 34 is low. The present invention has been made in view of the above problems, in an adsorption core provided with an adsorption unit between a plurality of heat transfer tubes, the adsorption of the adsorption unit,
The purpose is to improve the desorption performance.

[0006]

In order to achieve the above object, according to the present invention, a large number of adsorbents (34) are filled between a plurality of heat transfer tubes (26). An adsorption core provided with an adsorption portion (32),
4) A porous member (7, 7A, 7B) having a large number of holes (70) smaller than that of the porous member (7, 7A, 7B) is provided separately from the adsorbent (34) in the adsorption section (32). 7A, 7B)
As a result, the refrigerant passage (7) having a higher refrigerant permeability as compared with a portion where the porous member (7, 7A, 7B) is not disposed.
0, 7a) are formed in the suction section (32).

Further, in the invention according to claim 5, a plurality of members (A) larger than the adsorbent (34) are mixed into the adsorbing section (32), and the larger member (A) of the adsorbing section (32) is used. It is characterized in that a void portion (B) which is larger than the surrounding area is formed around the surrounding area. Therefore, the refrigerant passage (70, 7a) and the gap (B) of the adsorption section (32) can improve the permeability of the refrigerant with respect to the adsorption section (32). That is, in the adsorption process, the refrigerant outside the adsorption unit (32) is efficiently supplied to the interior of the adsorption unit (32), and in the desorption process, the refrigerant inside the adsorption unit (32) is supplied to the adsorption unit (3).
2) Efficient discharge to the outside is possible. In this way, the refrigerant can be efficiently moved in and out of the adsorption section (32), and the adsorption and desorption of the refrigerant by each adsorbent (34) can be efficiently performed. The reaction rate of adsorption and desorption can be improved, and the adsorption and desorption performance of the adsorption section (32) can be improved.

Further, since the porous member (7, 7A, 7B) and the large member (A) are provided in the adsorbing section (32), even if the adsorbent (34) moves in the adsorbing section (32). Also, voids (7a, 7b) inside the porous members (7, 7A, 7B), that is, refrigerant passages (70, 7a),
A space (B) around the large member (A) can be secured,
The improvement of the adsorption and desorption performance of the adsorption section (32) can be maintained over a long period of time.

[0009]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing a first embodiment of the present invention. (First Embodiment) FIG. 3 shows a schematic overall configuration of an adsorption refrigerating apparatus 1. The adsorption type refrigerating apparatus 1 includes a first adsorption core 11 and a second adsorption core 12, and the first adsorption core 11 and the second adsorption core 12 are accommodated in closed containers 14 and 15, respectively. .

Each of the closed containers 14 and 15 is provided with inlet / outlet portions 16 and 17 for gas refrigerant. These entrance / exit portions 16 and 17 are provided with a three-way switching valve 18 for the refrigerant on the entrance side which is arranged on the upstream side of the refrigerant flow from the entrance / exit portions 16 and 17.
Further, it is connected to a refrigerant three-way switching valve 19 on the outlet side, which is disposed downstream of the entrance / exit portions 16 and 17 in the refrigerant flow.

Further, a condenser 20 for liquefying the refrigerant, a gas-liquid separation of the refrigerant and a temporary operation of the liquid refrigerant are provided between the refrigerant outlet side of the three-way switching valve 19 for refrigerant and the refrigerant inlet side of the three-way switching valve 18 for refrigerant. A receiver 21 for storing, a pump 22 for sending a liquid refrigerant, and an evaporator 23 for evaporating the liquid refrigerant and exchanging heat with the outside air are connected in series by a refrigerant line 24 in that order, and thus a refrigerant circuit 25 Is configured.
In the refrigerant circuit 25, a required amount of refrigerant, for example, water in the case of the present embodiment, is sealed.

A cooling fluid and a heating fluid are alternatively supplied to the adsorption cores 11 and 12. Next, the suction core 11 will be described with reference to FIGS.
It will be described in detail with reference to FIG. The suction core 12 is the suction core 1
Since it has the same structure as 1, the description of the structure, effects, and the like is omitted.

The suction core 11 has a substantially rectangular thin box shape as a whole, and has a pair of elongated box-shaped (inlet side, outlet side) header tanks 27 and 28 and the header tank 2.
A plurality of substantially plate-shaped heat transfer tubes 26 fixed so as to communicate with the heat transfer tubes 7 and 28 are provided. And header tank 2
7, a plurality of heat transfer tubes 26 and a header tank 28 in this order.
A cooling fluid or a heating fluid flows. The header tanks 27 and 28 are made of a material having excellent heat resistance, for example, an aluminum alloy, and the heat transfer tube 26 is made of a material having excellent heat conductivity, for example, an aluminum alloy.

The heat transfer tube 26 has a width which is about half the width of the header tanks 27 and 28, and is arranged so that the thickness direction thereof is along the longitudinal direction of the header tanks 27 and 28. The heat transfer tubes 26 are arranged in plural numbers (for example, 5 to 6) at a predetermined distance along the longitudinal direction, and are arranged in plural lines (for example, two lines) in the width direction of the heat transfer tubes 26. I have. The heat transfer tubes 261 in the first row and the heat transfer tubes 262 in the second row are arranged so as to be stepped from each other.

Further, between the header tanks 27 and 28,
A plurality of wire mesh tubes 7 formed in a size similar to the heat transfer tube 26 are arranged. This wire mesh tube 7 has a gap 7a inside.
, And both ends thereof are sealed. The wire mesh tube 7 is arranged so that its thickness direction is along the longitudinal direction of the header tanks 27 and 28 and is adjacent to the heat transfer tube 26 in the width direction.

The wire mesh tube 7 is composed of a wire mesh formed by knitting a large number of wire members having a predetermined wire diameter into a mesh, and a mesh portion between the wire members of the wire mesh. 70 is
It is configured smaller than the adsorbent 34 so that the adsorbent 34 does not pass through. It should be noted that the mesh portion 70 of the wire mesh is shown quite coarsely in the figure. The wire mesh is made of a material having excellent thermal conductivity (for example, a stainless steel material), and has a wire diameter such that the wire mesh has such a rigidity that it is not completely crushed when the wire mesh tube 7 is disposed inside the suction portion 32. Is, for example, 0.03 mm, and the width of the mesh portion 70 is, for example, 0.08 mm. Here, the mesh portion 70 and the gap 7a of the wire mesh tube 7 constitute a refrigerant passage referred to in the claims.

A corrugated fin 50 formed by bending a long thin plate in a meandering shape is provided between the heat transfer tube 26 and the wire mesh tube 7. The corrugated fin 50 is also made of a material having excellent heat conductivity, for example, an aluminum alloy. And the mountain part 50 of the corrugated fin 50
a is in close contact with the heat transfer tube 26, and the crest 50b is in close contact with the wire mesh tube 7, and the corrugated fin 50
Are fixed to the heat transfer tube 26 and the wire mesh tube 7 by brazing. Further, both ends of the wire mesh tube 7 are also connected to the header tank 27, 2
8 and is fixed by brazing.

The outer peripheral portion of the attraction core 11, specifically, two surfaces perpendicular to the thickness direction of the attraction core 11 are covered with the rectangular covering members 8 made of the wire mesh. The covering member 8 is large enough to cover the header tanks 27 and 28 as well. FIG. 1 shows only the covering member 8 on one of the two surfaces. The covering member 8 and the outermost heat transfer tube 26
A large number of adsorbents 34 are accommodated and held in gaps formed by the wire netting tube 7 and the header tanks 27 and 28.

Thus, an adsorbing portion 32 formed by filling a large number of adsorbents 34 is formed in a gap formed between the plurality of heat transfer tubes 26, the plurality of wire mesh tubes 7, and the corrugated fins 50. The heat of the two fluids inside the heat transfer tube 26 is transmitted to the adsorption unit 32 via the heat transfer tube 26, the wire mesh tube 7, and the corrugated fin 50.

The adsorbent 34 is, for example, silica gel,
It is composed of particles of zeolite, activated carbon, activated alumina and the like, and the particle diameter is as small as about 0.1 to 0.5 mm. Also, the adsorbent 34 is, as is well known,
In a cooling state, a refrigerant (for example, water vapor, an aqueous alcohol solution, a fluorocarbon refrigerant, or the like) is adsorbed with high capacity, and the adsorbing capacity gradually decreases with the adsorption of the refrigerant. Is desorbed to regenerate the adsorption capacity.

In this configuration, when one of the first and second adsorption cores 11 and 12 (see FIG. 3) is on the desorption side for desorbing a refrigerant (for example, water vapor), the other is on the evaporator 23.
It is configured to be alternately switchable so as to be on the adsorption side for adsorbing the gaseous refrigerant from. For example, the first suction core 11
Is used as the desorption side, and the second suction core 12 is used as the suction side (the state shown by the solid line in FIG. 3).
9, the inlet / outlet portion 17 of the second adsorption core 12 and the evaporator 2
3 is in a flowing state, and the entrance / exit portion 1 of the first suction core 11 is
6 and the condenser 20 are in a flowing state. Further, the heating fluid is supplied to the first adsorption core 11 and the cooling fluid is supplied to the second adsorption core 12.

Thus, in the first adsorption core 11, the adsorption section 32 is heated, the refrigerant (steam) adsorbed by the adsorbent 34 is desorbed, and the adsorption capacity of the adsorbent 34 is regenerated. Further, in the second adsorption core 12, the adsorbent 34 is cooled by the cooling fluid, and the adsorption of the gaseous refrigerant (for example, water vapor) vaporized in the evaporator 23 is promoted.

By such an operation, the first suction core 11
Adsorbent 34 desorbs a predetermined amount of refrigerant, and the second adsorbent core 1
When the second adsorbent 34 adsorbs a predetermined amount of refrigerant, the state is switched to the state shown by the broken line in FIG. 3, and the first adsorbent core 11 is now on the adsorbent side, and the second adsorbent core 12 is on the desorbing side. Is configured to be performed. Hereinafter, a method for manufacturing the suction cores 11 and 12 of the present embodiment will be briefly described.

First, the heat transfer tube 26, the header tank 27,
8, the wire mesh tube 7, the corrugated fin 50, and one covering member 8 are integrally assembled by brazing. As a result, a container portion is formed in which one surface perpendicular to the thickness direction of the suction core 11 is open. After the container portion is filled with a large number of adsorbents 34, another covering member 8 is attached to one surface of the adsorption core 11 perpendicular to the thickness direction with an adhesive,
It is fixed by fastening means such as screws.

More specifically, the other covering member 8 and one side 71 (see FIG. 2) of the wire mesh tube 7 are fixed with an adhesive, and the covering member 8 is It is fixed to the header tanks 27 and 28 and the side portions of the heat transfer tube 26 and the wire mesh tube 7 by an adhesive or the above-mentioned fastening means. Accordingly, the adsorbent 34 does not enter between the side portion 71 of the wire mesh tube 7 and the covering member 8, and the refrigerant that has passed through the covering member 8 is directly transferred to the mesh portion of the side portion 71 of the wire mesh tube 7. Since it is supplied to the space 7 a inside the wire mesh tube 7 through 70, the permeability of the refrigerant to the adsorption section 32 can be improved.

According to the suction cores 11 and 12 having the above structure, the one side 71 of the wire mesh tube 7 is
15 (see FIG. 3). Further, since the wire mesh tube 7 is made of a material having such a rigidity that the wire mesh tube 7 is not completely crushed,
The void 7a is surely formed. Therefore, in the adsorption process, as shown in FIG. 2, the refrigerant in the closed containers 14 and 15 passes through the mesh portion 81 of the covering member 8 and is exposed to the outside of the adsorbing portion 32, that is, the covering member 8. Is supplied to the inside of the adsorption portion 32 from the surface covered with the metal mesh tube 7, and is supplied to the space 7a inside the metal mesh tube 7 from the mesh portion 70 of one side portion 71 of the metal mesh tube 7, and this refrigerant is supplied to the metal mesh tube. 7 is supplied to the inside of the suction unit 32 through the mesh part 70 other than the side part 71.

In the desorption process, the refrigerant desorbed from the adsorbing section 32 is discharged from the surface of the adsorbing section 32 exposed to the outside through the mesh section 80 of the covering member 8 to the outside of the adsorbing section 32. At the same time, the mesh portion 70 of the wire mesh tube 7 other than the side portion 71 passes through the gap 7 a inside the wire mesh tube 7, and further, from the mesh portion 70 of the side portion 71 of the wire mesh tube 7, the mesh portion of the covering member 8. After passing through 80, it is discharged to the outside of the suction core 11.

Here, the mesh portion 70 and the void 7a as the refrigerant passage are formed by the refrigerant in the adsorbing portion 32 in comparison with the portion where the wire mesh tube 7 is not disposed (that is, the portion filled with the adsorbent 34). High permeability. For this reason, compared with the case where the wire mesh tube 7 is not provided, it is possible to efficiently move the refrigerant in and out of the adsorbing section 32, and it is possible to improve the adsorbing and desorbing performance of the adsorbing section 32.

In this embodiment, since the wire mesh tube 7 is made of a material having excellent heat conductivity, the heat conductivity inside the suction portion 32 can be improved, and the suction of the suction portion 32 can be improved.
Desorption performance can be improved. Further, by reducing the width of the wire mesh tube 7 to about half the width of the header tanks 27 and 28, the amount of flatness of the wire mesh tube 7 in the thickness direction when the wire mesh tube 7 is disposed on the suction portion 32 can be reduced. The space 7a can be more reliably secured inside the mesh tube 7.

Further, since the wire mesh tube 7 is fixed to the header tanks 27 and 28 in parallel with the heat transfer tube 26, the heat transfer tube 26 and the corrugated fin 5 are attached to the header tanks 27 and 28.
In a conventional step of brazing 0, the wire mesh tube 7 can be brazed at the same time. Also,
The process after brazing (for example, the process of providing the suction unit 32) is the same as the conventional process. Therefore, the assembling work changed by providing the wire mesh tube 7 is simple.

(Second Embodiment) This embodiment is a modification of the first embodiment. As shown in FIGS. 4 and 5, the widths of the heat transfer tube 26 and the wire mesh tube 7 are changed to the header tank. The heat transfer tubes 26 and the metal wire tubes 7 are arranged alternately at a predetermined distance along the longitudinal direction of the header tanks 27 and 28, with the width being substantially equal to the width of the heat transfer tubes 27 and 28. . According to this, in the adsorption process, the refrigerant flows from the mesh portions 70 of both the side portions 71 and 72 of the wire mesh tube 7 through the gap 7 a inside the wire mesh tube 7, and further, the side portions 71 and 72 of the wire mesh tube 7. Through the mesh portion 70 other than the portion 72, the suction portion 32
Supplied internally. In the desorption process, the refrigerant is discharged from the inside of the adsorption section 32 to the outside of the adsorption core 11 in reverse to the adsorption step.

According to this embodiment, the number of the wire mesh tubes 7 can be reduced, and the mounting workability is good. (Third Embodiment) In this embodiment, as shown in FIGS. 6 and 7, only a plurality of heat transfer tubes 26 are arranged between header tanks 27 and 28. Further, a wire mesh tube 7 formed in a cylindrical shape and closed at both ends is provided with a corrugated fin 5.
It is arranged in each of the sections separated by 0. The diameter of the wire mesh tube 7 is configured to be insertable into the above-described portion, and
The length of the wire mesh tube 7 is configured to be substantially the same as the thickness of the suction core 11.

According to this, the refrigerant is supplied to the inside of the adsorbing section 32 from the surface of the adsorbing section 32 that is exposed to the outside, and the refrigerant is supplied from the mesh section 70 of both ends 71 and 72 of the wire mesh pipe 7 to the wire mesh pipe. 7 is supplied to the space 7a inside, and this refrigerant is
Mesh portion 7 of wire mesh tube 7 at a portion other than both end portions 71 and 72
After passing through 0, it is supplied to the inside of the adsorption unit 32. This manufacturing method includes a heat transfer tube 26, a header tank 27,
8, corrugated fin 50 and one covering member 8
Are assembled together by brazing. As a result, a container portion is formed in which one surface perpendicular to the thickness direction of the suction core 11 is open. Then, after one end portions 71 of the plurality of wire netting tubes 7 are bonded and fixed to the covering member 8, the container portion is filled with a large number of adsorbents 34. Then, the covering member 8 is fixed to one surface perpendicular to the thickness direction of the suction core 11 by a fastening means such as an adhesive or a screw.

The other end portion 72 of the wire mesh tube 7 and the covering member 8 are also fixed by bonding. By fixing the covering member 8 and the ends 71, 72 of the wire mesh tube 7, the adsorbent 34 is provided between the ends 71, 72 of the wire mesh tube 7 and the covering member 8.
Does not enter, and the refrigerant that has passed through the coating member 8 is
Directly through the mesh portions 70 of the ends 71, 72 of the wire mesh tube 7,
Since it is supplied to the space 7a inside the wire mesh tube 7, the suction portion 32
The permeability of the refrigerant to the air can be improved.

(Fourth Embodiment) This embodiment is different from FIG.
As shown in (b), the corrugated fin 50 is configured to be divided into a first row of corrugated fins 51 and a second row of corrugated fins 52, and these corrugated fins 51, 52 are formed of the suction core 11. Thickness direction (Fig. 9 (b)
(A middle left-right direction) at a predetermined distance.

The corrugated fins 51, 5
Between 2, an envelope-shaped wire mesh tube 7 </ b> A whose outer shape is a long plate shape and which has a gap 7 a inside is disposed. The length of the wire mesh tube 7A (the dimension in the vertical direction in FIG. 9B) is substantially the same as the length of the corrugated fins 51 and 52 (the dimension in the vertical direction in FIG. 9B). As shown in FIG. 9A, the width of the wire mesh tube 7A (the dimension in the horizontal direction in FIG. 9A) is substantially equal to the distance between the pair of heat transfer tubes 26.

At the end of the corrugated fin 50 in the length direction, an envelope-shaped wire mesh tube 7B is arranged at a portion separated by the corrugated fin 50. The wire mesh tube 7B is arranged so that its longitudinal direction is along the thickness direction of the heat exchanger. The width of the wire mesh tube 7B is substantially equal to the width of the corrugated fins 51 and 52 (the dimension in the horizontal direction in FIG. 11), and the length of the wire mesh tube 7 is the thickness of the corrugated fins 51 and 52. (Dimensions in the thickness direction of the exchanger).

According to this, as shown in FIG.
The refrigerant that has passed through the mesh portion 80 of the covering member 8
Of the wire mesh tube 7B, the mesh portion 70B of one end portion 71B is supplied to the inside of the suction portion 32 from the surface exposed to the outside.
From the wire mesh tube 7B to the gap 7b inside the wire mesh tube 7B,
B is supplied from the mesh portion 70 of the other end portion 72B to the gap 7a inside the wire mesh tube 7A through the mesh portions 70 on the both end portions 71A and 72A side of the wire mesh tube 7A, and further to the inside of the suction portion 32.

As a method of manufacturing the adsorption core 11 of the present embodiment, first, the heat transfer tube 26, the header tanks 27 and 28, the wire mesh tubes 7A and 7B, and the corrugated fin 50 are integrally assembled by brazing. Thereby, the wire mesh tube 7A
Are formed as bottom portions, and two container portions are formed, each having an opening in a surface perpendicular to the thickness direction of the suction core 11. Then, after each container portion is filled with a large number of adsorbents 34, the covering member 8 is fixed to a surface serving as an opening portion by a fastening means such as an adhesive or a screw.

(Fifth Embodiment) This embodiment is a modification of the fourth embodiment, and as shown in FIG.
The heat transfer tube 26 is also divided into a first-row heat transfer tube 261 and a second-row heat transfer tube 262. The two outermost heat transfer tubes 26a are not divided. Then, the width (the dimension in the horizontal direction in FIG. 10) of the wire mesh tube 7A is slightly smaller than the distance between the heat transfer tubes 26a, 26a, and the first row of heat transfer tubes 261 and the first row of fins ( 7A) between the second row of heat transfer tubes 262 and the second row of fins (not shown).
Is provided.

According to this, the same effect as the arrangement of two thin adsorption cores (that is, adsorption cores having good refrigerant permeability) at a distance in the thickness direction is obtained by one. It can be obtained by an adsorption core. Then, the assembling structure and the assembling work are simpler than the case where the thin suction cores are arranged at a distance. (Sixth Embodiment) This embodiment is different from FIGS.
As shown in FIG. 7, a plurality of tubular heat transfer tubes 26 are arranged in parallel at a distance from each other, and a plurality of (for example, seven) thin plate-like rectangular plate fins 60 are arranged in the thickness direction. Are arranged at a predetermined distance from each other,
At 0, a plurality of tubular heat transfer tubes 26 and a plurality of tubular wire mesh tubes 7 are arranged in a skewered manner. The plate fins 60 are formed of a material having excellent thermal conductivity. As shown in FIG. 12, the plate fins 60 have a plurality of through holes 61 through which the heat transfer tubes 26 and the wire mesh tubes 7 pass. The heat transfer tube 26 and the wire mesh tube 7 are fixed to the through holes 61 and 62 by brazing or crimping.

In this embodiment, two rows (header tanks 271, 272, header tanks 281, 282) of elongated box-shaped header tanks 27, 28 are provided at a distance in a direction perpendicular to the longitudinal direction. The heat transfer tubes 26 also include a first-row heat transfer tube 261 and a second-row heat transfer tube 262. The first row of heat transfer tubes 261 and the second row of heat transfer tubes 2
A plurality of wire mesh pipes 7 are arranged between the wire mesh pipes 62. The plurality of wire mesh tubes 7 are arranged at a distance from each other in the longitudinal direction of the header tanks 27 and 28. Here, the length of the wire mesh tube 7 is configured to be substantially equal to the distance between the header tanks 27 and 28.

The four surfaces of the substantially box-shaped suction core 11 corresponding to the four sides of the plate fins 60 are formed of four covering members 8 each having a rectangular shape enough to cover each surface. Respectively. As a method of manufacturing the adsorption core 11 of the present embodiment, first, the heat transfer tube 26, the header tanks 27 and 28, the wire mesh tube 7, the corrugated fin 5
Zero and three covering members 8 are integrally assembled by brazing. As a result, the outermost plate fin 60a and the covering member 8 form a container portion in which one surface of the suction core 11 is open. After the container portion is filled with a large number of adsorbents 34, the remaining one covering member 8 is fixed to the opened surface by an adhesive or a fastening means such as a screw.

Then, according to the above configuration, as shown in FIG. 12, the refrigerant that has passed through the mesh portion 80 of the covering member 8 is supplied to the inside of the adsorption unit 32 from the surface of the adsorption unit 32 that is exposed to the outside. At the same time, the mesh portion 70 of both ends 71 and 72 of the wire mesh tube 7 is supplied to the gap 7 a inside the wire mesh tube 7, and the refrigerant is supplied to the mesh portions 70 of the wire mesh tube 7 at portions other than the both end portions 71 and 72. After that, it is supplied to the inside of the adsorption unit 32.

(Seventh Embodiment) This embodiment relates to the wire mesh tube 7 and the header tank 2 of the sixth embodiment.
This is a modification of the embodiments 7 and 28. Specifically, as shown in FIG. 13, the header tanks 27 and 28 are configured to be longer in the longitudinal direction than in the sixth embodiment, and correspondingly, the plate fins 60 are enlarged and the heat transfer tubes are increased. 2
The number of six has been increased. Further, the wire mesh tube 7 is configured in an envelope shape in which both ends are sealed, and a plurality of the wire mesh tubes 7 are arranged between the heat transfer tubes 261 in the first row and the heat transfer tubes 262 in the second row. The plurality of wire mesh tubes 7 are arranged at a distance from each other in the longitudinal direction of the header tanks 27 and 28.

(Eighth to Twelfth Embodiments) Eighth to Twelfth Embodiments
In this embodiment, the wire mesh tube 7 is eliminated from the suction core 11 shown in FIG. 6, and a member A larger than the adsorbent 34 is mixed in the adsorbent 34 in the adsorbing section 32. The size of the member A is about 2 to 10 times the size of the adsorbent 34, and is mixed at a rate of 3 to 30% of the volume of the adsorbing section 32. Thus, a large gap B is formed around the large member A in the suction part 32 as compared with the other parts.
Is formed.

Since the permeability of the refrigerant with respect to the adsorbing section 32 can be improved by the space B, each adsorbent 34
The adsorption and desorption of the refrigerant by the refrigerant is efficiently performed, and the adsorber 3
2 can improve the adsorption and desorption performance. Further, since it is only necessary to mix the member A into the adsorbent 34, the adsorbent core 11
The assembly structure and the assembly work are simple and the cost is low.

In the eighth embodiment, FIG.
As shown in the figure, as the member, a substantially cylindrical adsorbent A
Is used. In the ninth embodiment, as shown in FIG. 14B, as the member, a diameter (for example, 0.5 mm) larger than the diameter (for example, 0.1 mm) of the normally filled adsorbent 34 is used.
A spherical adsorbent A is used. The tenth embodiment is:
As shown in FIG. 14 (c), the above members are substantially spherical,
A substantially cylindrical foam metal A is used. In the eleventh embodiment, as shown in FIG. 14D, a metal mesh tube A (for example, aluminum or stainless steel) is used as the member. The wire mesh tube A is formed of a wire mesh that allows the refrigerant to pass therethrough and prevents the adsorbent 34 from passing therethrough.
In addition, since it is made of metal, the thermal conductivity of the adsorption section 32 can be improved. In the twelfth embodiment, as shown in FIG. 14E, a coil spring A made of metal (for example, aluminum or stainless steel) is used as the member.

(Other Embodiments) First, instead of the wire mesh tubes 7, 7A and 7B in the above-described embodiment, an open-cell foamed metal material formed in a predetermined shape such as a columnar shape or a thin plate is used as a porous material. It may be used as a member. Here, open cells are bubbles in which bubbles are continuously formed.
The refrigerant can pass from the foam that opens on the surface of the foam metal material, through a number of foams that are continuously formed inside the foam metal material, to another foam that opens at another portion of the surface. is there.

Further, in the above embodiment, the covering member 8 and the wire mesh tube 7 are fixed by brazing or bonding, but the covering member 8 and the wire mesh tube 7 may not be fixed. Further, in the above embodiment, a large number of adsorbents 3
The heat transfer tube 26, the fins 50 and 60, the header tank 2
The adsorbing portion 32 may be formed by integrating a large number of adsorbents 34 with a binder (for example, vinyl acetate resin or the like) between 7 and 28.

Further, wire mesh tubes 7, 7A, 7A made of wire mesh
Instead of this, a porous tube made of a punched metal having a large number of holes of a predetermined diameter provided on the surface of the thin plate member may be used as the porous member. Further, the large member A of the eighth to twelfth embodiments may be mixed with the suction part 32 of the first to seventh embodiments. According to this, the permeability of the refrigerant in the adsorption section 32 can be further improved, and the adsorption and desorption performance of the adsorption section 32 can be further improved.

In the first embodiment, the wire mesh tube 7 is
It is made of a material having such a rigidity that it is not completely crushed. However, it is made of a material having a smaller rigidity, and a support member for securing the gap 7a therein, for example, a diameter about the thickness of the gap 7a. Adsorbents with metal spheres
A plurality of gaps 7a inside the wire mesh tube 7 may be sealed.
The enclosing ratio inside the wire mesh tube 7 is about 1 to 30% of the gap 7a.

In the eleventh embodiment (see FIG. 13), the width of the wire mesh tube 7 is slightly smaller than the longitudinal length of the plate fins 60 (the longitudinal length of the header tanks 27 and 28). It is also possible to provide a through-hole having a length approximately equal to the width of the wire mesh tube 7 in the plate fin 60 and provide one wire mesh tube 7. According to this, the same effect as the case where two thin suction cores are arranged at a distance in the thickness direction can be obtained by one suction core.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view of a suction core according to a first embodiment of the present invention.

FIG. 2 is a partial view of an AA cross section in FIG.

FIG. 3 is a schematic overall configuration diagram of an adsorption refrigeration apparatus.

FIG. 4 is a schematic perspective view of a suction core according to a second embodiment of the present invention.

FIG. 5 is a partial view of an AA cross section in FIG. 4;

FIG. 6 is a schematic partial perspective view of a suction core according to a third embodiment of the present invention.

FIG. 7 is a partial view of an AA cross section in FIG. 6;

FIG. 8 is a schematic perspective view of a suction core according to a fourth embodiment of the present invention.

9A is a cross-sectional view taken along line AA of FIG. 8, and FIG. 9B is a cross-sectional view taken along line BB of FIG.

FIG. 9A according to a fifth embodiment of the present invention;
FIG.

FIG. 11 is a schematic perspective view of a suction core according to a sixth embodiment of the present invention.

FIG. 12 is a sectional view taken along line AA of FIG. 11;

FIG. 13 is a schematic perspective view of a suction core according to a seventh embodiment of the present invention.

14 (a) to (e) show eighth to first embodiments of the present invention.
It is the elements on larger scale of the adsorption part 32 concerning 2nd Embodiment.

FIG. 15 is a schematic partial perspective view of a suction core according to the related art.

[Explanation of symbols]

26: heat transfer tube, 32: adsorption part, 34: adsorbent, 7: wire mesh tube (porous member), 7a: void (refrigerant passage), 70: mesh part (hole, refrigerant passage).

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Koji Tanaka 1-1-1, Showa-cho, Kariya-shi, Aichi Pref. (72) Inventor Hisao Nagashima 1-1-1, Showa-cho, Kariya-shi, Aichi Prefecture Inside DENSO Corporation

Claims (5)

[Claims] A plurality of heat transfer tubes (26) made of a material having excellent heat conductivity are arranged in parallel at a distance from each other, and a refrigerant is adsorbed between the plurality of heat transfer tubes (26). An adsorbing section (32) is formed by filling a large number of adsorbable particulate adsorbents (34). When a cooling fluid flows through the heat transfer tube (26), the refrigerant is supplied to the adsorbing section (32). Adsorbing the heat transfer tube (26)
When the heating fluid flows through the porous member (7, 7A), the refrigerant is desorbed from the adsorbing section (32) and has a number of holes (70) smaller than the adsorbent (34). , 7B) is the adsorbent (3)
4) is provided separately from the adsorbing section (32), and the porous member (7, 7) is included in the adsorbing section (32).
Forming a refrigerant passage (70, 7a) having a higher refrigerant permeability in the adsorbing section (32) by the porous member (7, 7A, 7B) as compared with a portion where the A, 7B) is not disposed. An adsorption core of an adsorption type refrigerating apparatus characterized by the above-mentioned. 2. The passage forming member (7, 7A, 7B).
The adsorption core according to claim 1, wherein the plurality of heat transfer tubes are arranged in parallel with the plurality of heat transfer tubes (26). 3. The passage forming member (7, 7A, 7B).
2. The adsorption core of the adsorption refrigeration apparatus according to claim 1, wherein the adsorption core is vertically disposed on the plurality of heat transfer tubes (26). 3. 4. The passage forming member (7, 7A, 7B).
A first passage forming member (7A) arranged in parallel with the plurality of heat transfer tubes (26); and a plurality of heat transfer tubes (26).
The adsorption core according to claim 1, further comprising a second passage forming member (7B) vertically disposed on the suction core. 5. A plurality of heat transfer tubes (26) made of a material having excellent heat conductivity are arranged in parallel at a distance from each other, and a refrigerant is adsorbed between the plurality of heat transfer tubes (26). An adsorbing section (32) is formed by filling a large number of adsorbable particulate adsorbents (34). When a cooling fluid flows through the heat transfer tube (26), the refrigerant is supplied to the adsorbing section (32). Adsorbing the heat transfer tube (26)
When the heating fluid flows through the adsorbent, the refrigerant is desorbed from the adsorber (32). The adsorber (32) includes a plurality of members (A) larger than the adsorbent (34). A large gap portion (B) around the large member (A) in the suction portion (32) as compared with a portion other than the surrounding portion.
An adsorption core of an adsorption refrigeration apparatus, characterized by forming: