JP2003214784A - Thermal storage vessel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a means for aligning thermal storage capsules and a draining means for draining the generated water outside in the condition that they can function independently of each other. <P>SOLUTION: Thermal storage capsules are arranged in a first direction so that a first wall surface of one of the adjacent thermal storage capsules and a second wall surface of the other thermal storage capsule face to each other to form a thermal storage capsule line, and a plurality of the thermal storage capsule lines are aligned in a second direction along the first wall surface. A bottom surface 54 of the thermal storage vessel 2 is formed with positioning recessed and projecting parts 57 for aligning the thermal storage capsules in the first direction. The bottom surface 54 is formed with vertical drains 58 extended in the first direction at each position corresponding to the thermal storage capsule line, and lateral drains 59 to be communicated with a plurality of vertical drain 58 are formed in the bottom surface in the condition that the lateral drains 59 are obliquely extended in a direction inclined against the second direction. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat storage tank capable of accommodating a large number of heat storage capsules in which an internal space for filling a heat storage material is formed between a first wall surface and a second wall surface which are arranged to face each other. It concerns the drainage structure.

[0002]

2. Description of the Related Art A heat storage tank is constructed by passing air through it.
Heat exchange with a large number of heat storage capsules installed therein is known, and the one disclosed in JP-A-2000-18864 is known. That is, the melting point is 23 ° C or 18
A large number of heat storage capsules filled with heat storage material such as ℃ are arranged vertically and horizontally with appropriate gaps, and the air from the blower fan is passed through the gaps between the heat storage capsules to achieve an air heat exchange action. Was configured to take place.

[0003]

To this end, it is required to arrange a large number of heat storage capsules between adjacent ones of them in a heat storage tank with an appropriate gap between them. Nothing was disclosed about that point. Further, water may be generated by condensation in the heat storage layer due to heat exchange or dew condensation due to a temperature decrease, and it is necessary to have a function of discharging the water to the outside of the heat storage layer. Even if it was attached, it was not disclosed in the past.

The object of the present invention is to equip both the means for arranging the heat storage capsules at appropriate intervals and the drainage means for taking out the produced water to the outside in a state where they can function without adversely affecting each other. The point is to provide a heat storage layer.

[0005]

[Structure] According to the structure of claim 1, as illustrated in FIGS. 7 and 9 to 11, between a first wall surface 41 and a second wall surface 42 which are arranged to face each other, A heat storage tank capable of accommodating a large number of heat storage capsules C forming an internal space 43 for filling the heat storage material, wherein the heat storage capsule C is the first one of the heat storage capsules C in adjacent ones of them. A plurality of heat storage capsule rows L formed by being aligned in the first direction in which the wall surface 41 and the second wall surface 42 of the other heat storage capsule C face each other are provided in the first or second wall surface 4
1 or 42 is aligned in the second direction, and the bottom surface 54 of the heat storage tank 2 is provided with a positioning uneven portion 57 for aligning the heat storage capsules C in the first direction. Vertical drainage grooves 58 extending in the first direction at corresponding positions are formed on the bottom surface 54, and horizontal drainage grooves 59 communicating with the plurality of vertical drainage grooves 58 extend in an oblique direction inclined with respect to the second direction. It is characterized in that it is formed on the bottom surface in a state.

As shown in FIGS. 10 and 11, the structure of claim 2 is different from the structure of claim 1 in the heat storage capsule array L.
And an inlet space 55 and an outlet space 56 for blowing air to the heat storage capsule group G formed by arranging a plurality of them in the second direction are distributed to the locations adjacent to the heat storage capsule group G in the second direction and communicated with the lateral drainage groove 59. The drainage basin 60 to be formed is formed on the bottom surface 54 in the inlet space 55 or the outlet space 56.

As shown in FIG. 10, the structure of claim 3 is characterized in that, in the structure of claim 2, a drain pipe 61 for guiding the water accumulated in the drainage basin 60 to the outside of the heat storage tank 2 is provided. It is a thing.

As mentioned above, the reference numerals are given for the sake of convenience in comparison with the drawings, but the present invention is not limited to the constructions of the accompanying drawings by the entry.

[Operation] In arranging the heat storage capsules in the heat storage tank, the ventilation gaps formed at the locations where the first wall surface and the second wall surface of the adjacent heat storage capsules face each other It is flat and relatively long and is a place that plays a major role in heat exchange, whereas it is formed between adjacent heat storage capsules in the second direction along the surface of the first or second wall surface. The created gap has a very short length, and is a place that has little effect on heat exchange even if wind passes. That is, it is actually important to accurately determine the position in the first direction, the degree of importance regarding positioning in the second direction is low, and accuracy is not required.

Therefore, according to the structure of claim 1, the positioning concave-convex portion for aligning the heat storage capsules in the first direction in which they are aligned facing each other, that is, the direction in which it is important to perform positioning as described above, is the bottom surface. Since it is formed, the space between the adjacent heat storage capsules, which serves as a passage for the wind, can be secured as a space having the set dimensions, and the desired heat exchange action can be obtained.

On the other hand, a vertical drain groove extending in the first direction is formed on the bottom surface at a position corresponding to the heat storage capsule row, and the horizontal drain groove communicating with the plurality of vertical drain grooves is inclined with respect to the second direction. Since it is formed on the bottom surface in a state of extending in the oblique direction, it is possible to construct the drainage facility without disturbing the above-mentioned positioning irregularities.

That is, since the vertical drainage groove extending in the first direction simply crosses the uneven portion, the width dimension of the uneven portion is narrowed by the groove width, and the spacer function is not affected at all. However, if a horizontal groove is formed in a direction that makes an angle of 90 degrees with the first direction in order to connect these vertical drainage grooves, that direction coincides with the longitudinal direction of the uneven portion. May be missing or disappear over its entire width, and the above-described positioning function in the first direction may be impaired. Therefore, since the horizontal drainage groove was formed diagonally as described above, the horizontal drainage groove crosses the uneven portion diagonally, and even if there is partial lack or disappearance, the unevenness portion is missing or disappears over the entire width. This can be avoided, and the positioning function in the first direction can be ensured in any uneven portion.

According to the second aspect of the present invention, the drainage basin, which collects and collects the water generated in the heat storage layer, is provided in the inlet space or the outlet space adjacent to the upstream side or the downstream side of the heat storage capsule group. Therefore, the drainage basin can be arranged independently of the positioning unevenness portion, and it is also advantageous in that the strength of the unevenness portion where the heat storage capsule is placed is not reduced.

According to the third aspect of the present invention, since the water accumulated in the drainage basin can be taken out of the heat storage layer by using the drainage pipe, the water does not continue to be accumulated in the heat storage layer and there is no excess water. You will be able to maintain a good condition. Since the water accumulated in the drainage basin can be taken out of the heat storage layer by using a pump, the water will not continue to accumulate in the heat storage layer, and it will be possible to maintain a good condition with no excess water. The drainage point is located higher than the drainage basin, or it can be drained to a location away from the heat storage tank.

[Effect] In the heat storage tank according to the first aspect, an uneven portion that defines a gap between adjacent heat storage capsules in the heat storage capsule row is provided, and a vertical drain groove and a vertical drain groove that cross these uneven portions are provided. By devising a diagonal drainage groove that communicates with each other, the gap between the heat storage capsules facing each other can be made to exist as a desired ventilation space, while ensuring a good heat exchange effect. , It was possible to collect the water generated in the heat storage tank and take it out of the tank without any trouble.

According to a second aspect of the present invention, in addition to the effect of the first aspect, the heat storage tank is provided with a drainage basin in an inlet space or an outlet space where the heat storage capsules are not arranged. It was possible to realize a drainage structure that does not cause the accumulated water to overflow into the tank without reducing the strength or hindering the positioning function of the uneven portion.

According to the third aspect of the present invention, in the heat storage tank, any one of the effects according to the first or second aspect can be obtained, and by providing the drain pipe communicating with the drainage basin, energy can be saved by utilizing gravity. It has the advantage of being able to drain well.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 show a heat storage air conditioner A applied to a private house. This heat storage air conditioner A
Arrange | positions the heat storage air conditioning unit U provided with the air conditioner 1 and the heat storage tank 2 which can store the heat freely by this air conditioner 1 while arrange | positioning the discharge wind from the air conditioner 1 to each room (air-conditioning target). For example, the ceiling Y1 on the first floor to send to R11 to R23
And the air ducts 3 that are sequentially routed to the ceiling Y2 on the second floor.

A return duct 30 equipped with a return gallery 29 at one end and one end of a short-circuit duct 6 are connected to one opening 2a of the heat storage tank 2, and an air guide duct is provided at a discharge port 1b of the air conditioner 1. 3 and the other end of the short-circuit duct 6 are connected, and the other opening 2b of the heat storage tank 2 and the suction port 1a of the air conditioner 1 are connected by a connection duct 7. A forward path switching mechanism a is provided at the root of the air guide duct 3, and a return path switching mechanism b is provided at the root of the return duct 30. The forward path switching mechanism a is configured by providing a first guide plate 8 which is swingable at a fulcrum p1, and the backward path switching mechanism b is provided at a fulcrum p2.
A second guide plate 9 which can swing freely is provided.

The air duct 3 passes through the outer wall on the first floor,
First, the first branch box 10 is installed in the ceiling Y1 on the first floor.
After passing through, it is routed through the outer wall on the second floor to the ceiling Y2 on the second floor and reaches the second branch box 11. Individual ducts d11 to d23 extend from the first branch box 10 to the rooms R11 to R13 on the first floor, and individual ducts d21 to d23 from the second branch box 11 to the rooms R21 to R23 on the second floor. It is extended. An open / close valve 4 and a blower fan 5 are provided for each of the individual ducts d11 to d23 so that the individual ducts can be shut off. Each individual duct d
Openings 12 for the respective rooms R11 to R13 are provided at the tips of the sections 11 to d23.

A plurality of individual ducts d11 to d13 and d21 to d23 are connected to the branch boxes 10 and 11, and the structure of the second branch box 11 for the second floor will be described. As shown in FIG. 2, the second branch box 11
Has a cross-sectional area larger than the reference cross-section of the air duct 3, and has an opening / closing valve 4 and a blower fan 5 on its lateral side wall 11a.
The openings 15 are formed for arranging the same number of air-blowing units su that are directly connected to each other as the number of rooms. That is, by increasing the cross-sectional area, the conditioned air that is sent can be evenly distributed to the blower units su as much as possible.

As shown in FIGS. 3 and 4, the blower unit s
u is configured by integrally bolting the throttle duct 16 attached to the branch boxes 10 and 11, the blower fan 5, and the on-off valve 4, and the individual ducts d11 to d11 are provided on the tip side of the on-off valve 4. d23 is connected.

The blower fan 5 includes an electric motor 5a fixed to the tubular frame 21 and a fan 2 attached to the electric motor 5a.
2, and is configured to be bolted to both the on-off valve 4 and the throttle duct 16 via the tubular frame 21. The throttle duct 16 includes the blower fan 5 and the branch box 1.
1 has a function of connecting and communicating with 1 and changing the cross-sectional area in a direction that cancels the change of the cross-sectional area due to the presence of the electric motor 5a. Incidentally, 23 is a lead wire of the electric motor 5a.

The open / close valve 4 includes a base plate 17 bolted to the blower fan 5, an extremely short cylindrical duct 18, and a cylindrical duct 18
Opening and closing door 19 that can swing freely at the fulcrum p1 to open and close the opening
And an opening / closing mechanism 20 mounted on the board 17 constitute a two-position switching type, and the opening / closing mechanism 20 can switch between two positions of fully open and fully closed. This on-off valve 4
When the blower fan 5 is rotationally driven, it is in the fully open position, and when the blower fan 5 is stopped, it is fully closed.

A blower fan 5 is installed in each of the rooms R11 to R13.
A controller 13 for controlling the number of rotations of the fan and a temperature setting switch 14 are provided. When the temperature setting switch 14 is operated to determine the set temperature, the blower fan 5 correspondingly
The rotation speed (the number of rotations per unit time) of the electric motor 5a is set by the controller 13. That is, the room temperature is controlled by adjusting the wind force due to the change in the rotation speed of the blower fan 5.

On the other hand, a temperature detection sensor 24 for detecting the internal temperature of the heat storage tank 2, a first drive mechanism 25 for moving the forward switching mechanism a, and a second driving mechanism 26 for moving the backward switching mechanism b.
The air conditioner 1 and the operation mode switching setter 27 are connected to the control device 28 to form a control circuit completed in the heat storage air conditioning unit U.

That is, when the setting device 27 is operated in the "heat storage mode", the first guide plate 8 swings to the side where the air guide duct 3 is cut off and the short circuit duct 6 is opened, and the return duct 30 is cut off. As a result, the second guide plate 9 swings to the side where the short-circuit duct 6 is opened, and a closed operation of storing heat in the heat storage tank 2 in the air conditioner 1 is performed [see FIG. 5 (a)].

When the setting device 27 is operated in the "heat radiation mode", the first guide plate 8 swings to the side where the air guide duct 3 is opened and the short-circuit duct 6 is shut off, and the return duct 30 is opened.
Is opened and the second guide plate 9 swings to the side where the short-circuit duct 6 is cut off, and the air conditioner 1 functions simply as a blower fan. Therefore, the operation for air conditioning is performed by storing heat in the heat storage tank 2 [FIG. (See (b)].

When the setting device 27 is operated in the "radiation air conditioning mode", the forward path switching mechanism a and the backward path switching mechanism b are operated,
This is an operation mode in which the air conditioner 1 is air-conditioned while the short-circuit duct 6 is cut off and the air guide duct 3 and the return duct 30 are open. According to this, it becomes possible to perform air conditioning by both the heat storage stored in the heat storage tank 2 and the air conditioner 1, and it is possible to quickly perform air conditioning such as cooling or heating [FIG. reference].

When the setting device 27 is operated in the "heat storage air conditioning mode", the forward switching mechanism a and the backward switching mechanism b are operated so that the first guide plate 8 and the second guide plate 9 swing to the half-open position and stop. The air conditioner 1 operates in that state,
The operating state in which the discharged air (air conditioning air) is supplied to both the air guide duct 3 and the short-circuit duct 6 appears. In other words, this is a mode in which both heat storage in the heat storage tank 2 and indoor air conditioning are performed [see FIG. 5 (d)].

For example, when the temperature detection sensor 24 detects that the temperature of the heat storage tank 2 has reached the upper limit during cooling in the heat radiation mode, the air conditioner 1 is operated to enter the cooling state by the air conditioner 1 (air conditioning mode). The controller 28 functions to switch. After that, blower fan 5 for all rooms
Is stopped, the forward path switching mechanism a and the backward path switching mechanism b are operated so that the short-circuit duct 6 is cut off, and the "heat storage mode" is set.
The control device 28 functions so that the heat storage tank 2 automatically stores heat.

In this case, the stop of all the blower fans 5 is
This can be determined by catching an electrical change caused by a sudden increase in the load of the fan drive motor (not shown) of the air conditioner 1 due to the air duct 3 reaching a dead end and a sudden increase in the supply current. The link structure between each temperature setting switch 14 and the controller 28 is not necessary.

As shown in FIGS. 6 and 7, the heat storage capsule C housed in the heat storage tank 2 has a first wall surface 41 oppositely arranged.
And the second wall surface 42, the internal space 43 for filling the heat storage material formed between the both wall surfaces 41, 42, and the both wall surfaces 41, 4
The outer peripheral seal portion 45 is configured so that the outer peripheral edges of the two are hermetically connected to each other. The front wall shape of both the wall surfaces 41, 42 is set to a vertically long rectangular shape whose vertical height is longer than the horizontal length, and the internal space 43 has three vertical surfaces.
Both wall surfaces 41, so as to be divided into a partial space 44 of the place,
The upper and lower intermediate portions 42 are formed with two intermediate seal portions 46 that are airtightly connected to each other. That is, the heat storage capsule C has a structure in which three sets of partial capsules 48 having the partial space 44 are vertically connected and integrated.

Each of the first and second wall surfaces 41, 42 is made of a flat plate synthetic resin material having three convex surface portions 47 bulging outward to form the internal space 43. The parts other than the part 47 are the outer peripheral seal part 45 and the intermediate seal part 46. The heat storage capsule C has both wall surfaces 4
The outer peripheral seal portion 45 and the intermediate seal portion 46 are integrated by fusing the outer peripheral seal portion 45 and the intermediate seal portion 46 together. When viewed as a partial capsule 48, a pair of round holes 49 formed at both ends of the upper portion and a groove hole 40 formed at a total of three places, that is, an upper one place and a lower two places, respectively,
The wall surface 41 and the second wall 42 are spot-welded. Each of the partial spaces 44 is filled with the heat storage material 39 having a solidification temperature of 18 ° C.

The convex surface portion 47 is formed in a concavo-convex shape in which a relatively small-sized concave portion 47a and convex portion 47b extending in the lateral direction are repeatedly formed. That is, the concave portion 47a is the inner space 4
3 has a concave shape, and the convex portion 47b has an internal space 43
It has a bulging shape on the opposite side. And the first
The concave portion 47a formed on the wall surface 41 and the convex portion 47b formed on the second wall surface 42, and the convex portion 47b formed on the first wall surface 41 and the concave portion 47a formed on the second wall surface 42,
The first wall surface 41 and the second wall surface 42 are formed so as to coincide with each other in the normal direction. That is, with respect to the position where the convex portion 47b is formed on the first wall surface 41, the concave portion 47a is formed on the second wall surface 42 located on the back side thereof.

The intermediate seal portions 45, 45 and the upper and lower first portions
And the recessed groove 3 formed by the second wall surfaces 41 and 42.
8, a regulating member 37 that reduces the cross-sectional area of the recessed groove 38 is arranged. As shown in FIG. 6, in the heat storage tank 2, adjacent heat storage capsules C and C are arranged with the first and second wall surfaces 41 and 42 approaching each other, and the space between the heat storage capsules C and C is arranged. The wind for heat exchange will flow.

In this case, if the recessed groove 38 is left open, the adjacent recessed grooves 38, 38 overlap each other to form a relatively large space, and the wind concentrates and flows into the adjacent recessed grooves 38, 38. It will not flow so much into the narrow space between the first and second wall surfaces 41, 42. Therefore, in order to prevent this, a regulating member 37 made of a material having a low specific gravity such as a sponge pad is put in the concave groove 38 and adhered thereto, and the concave groove 38 is almost completely filled with the regulating member 37 in a side view. It is in a state. As the regulating member 37, urethane, PP,
Various materials such as PE, aluminum alloy, and rubber are possible. Further, the regulating member 37 may have a structure in which a plurality of regulating members 37 having a short length are arranged in the recessed groove 38 with a space in addition to the elongated shape shown in FIG. 7.

As shown in FIG. 6, the heat storage capsule C installed in the heat storage tank 2 has a first wall surface 41 of one heat storage capsule C and a second heat storage capsule C of the other heat storage capsule C adjacent to each other. The heat storage capsule rows L are formed by being arranged in the arrow A direction (an example of the first direction) in which the two wall surfaces 42 face each other. When a plurality of the heat storage capsule rows L are arranged in the arrow B direction (an example of the second direction) along the surface of the first or second wall surface 41 or 42, the heat storage capsules C adjacent to each other in the arrow B direction are indicated by arrows. It is set in a state where they are displaced from each other in the a direction (staggered lattice state).

That is, the adjacent heat storage capsule rows L are displaced from each other by P / 2 which is half of the arrangement pitch (an example of the first direction span) P of the heat storage capsules C, C adjacent to each other in the arrow A direction. Yes, the path of the blast is zigzag. As a result, the wind does not pass through the gap between the heat storage capsules C and C, but always collides with the side surface of one of the heat storage capsules C to constantly change the wind direction, that is, the gap between the heat storage capsules C and C. Since the air flows in a meandering state, the speed of the air flowing while sliding on the surface of the heat storage capsule and the air volume can be made larger than before, and the efficiency of heat exchange by the air is improved. .

Next, the heat storage tank 2 will be described. 9-
As shown in FIG. 13, the heat storage tank 2 includes front and rear side surfaces 50, 5
1. A rectangular parallelepiped body made of styrofoam, which includes an uncovered tank body 2A having left and right side surfaces 52, 53 and a bottom surface 54, and a lid 2B detachably attached to the tank body 2A. . Inside the heat storage tank 2, a blower inlet space 55 and a blower outlet space 56 are separately arranged at both left and right ends, and a storage portion S of the heat storage capsule C is allocated between them.

At the left and right ends of the front surface 50, the air inlet space 5
5 and an outlet opening 50o corresponding to the blower outlet space 56 are formed. Then, on the bottom surface 54 of the portion corresponding to the accommodating portion S, a large number of heat storage capsules C are provided in the arrow A direction (first direction) and the arrow B direction (second direction).
(3) of the heat storage capsules L are formed in an aligned state in order to realize the heat storage capsule group G including three rows.

The concavo-convex portion 57 is composed of a large number of horizontally long protrusions 62 integrally formed on the upper surface side of the bottom surface 54, and the recess 6 formed between the horizontally long protrusions 62, 62 adjacent to each other in the arrow A direction.
3, the outer peripheral seal portion 45 of the heat storage capsule C is fitted in,
In addition, the first protrusions are formed on both the inclined upper surfaces 62a, 62a of the horizontally long protrusions 62.
By mounting the inclined side surfaces 41a, 42a of the second wall surfaces 41, 42, it is possible to contribute to aligning a large number of heat storage capsules C in the arrow A direction at equal intervals.

In addition, the heat storage capsule array L and the blast inlet space 55
And, a total of five vertical drainage grooves 58 extending in the direction of arrow A are formed on the bottom surface 54 at positions corresponding to the respective blower outlet spaces 56, and horizontal drainage grooves 59 communicating with the plurality of vertical drainage grooves 58 are formed. It is formed on the bottom surface 54 in a state of extending in an oblique direction inclined with respect to the arrow B direction.

A drainage basin 60, which is circular in plan view and is formed on the bottom surface 54 of the inlet space 55 or the outlet space 56, communicates with one end of the horizontal drainage groove 59, and the leftmost vertical drainage groove 5 is formed.
8 is connected to the lateral drainage groove 59 via a drainage basin 60. Further, a drainage pipe 61 that guides the water accumulated in the drainage basin 60 to the outside of the heat storage tank 2 through the left side surface 52, and a suction pump 64 connected to the tip end side of the drainage pipe 61 are provided.

The three vertical drainage grooves 58 in the storage section S are
The lateral drainage grooves 59 are formed diagonally across the corresponding laterally elongated projections 62 while being formed so as to cross each laterally elongated projection 62 so as to be cut into pieces. Therefore, even if any of the horizontally long protrusions 62 is partially omitted, it is configured to have a spacer function for the heat storage capsules C, and the heat storage capsules C are aligned even though the drainage grooves 58 and 59 are provided. It has a rational structure that does not impair the layout.

[Another Embodiment] << 1 >> Two vertical drainage grooves 58 are provided for each heat storage capsule array L.
It is also possible to provide more than one, or to provide the lateral drainage grooves 59 in a V shape, a zigzag shape, or as a curved line. The drainage basin 60 may be provided on the inlet opening 50i side of the inlet space 55 or on the outlet section 56. Further, the pump 64 may be incorporated in the tank main body 2A, in which case the drainage pipe 61 connected to the discharge side of the pump 64 penetrates the tank main body 2A and extends to the outside.

<< 2 >> As shown in FIG. 14, the blower unit su may be mounted in a state opposite to that shown in FIG. That is, the on-off valve 4 is arranged so that it can be opened and closed in the branch boxes 10 and 11, and the individual duct d11 is attached to the throttle duct 16. In this case, the fan 5 has a reverse rotation specification.

[Brief description of drawings]

FIG. 1 is a schematic diagram showing an air conditioner using a heat storage air conditioning unit.

FIG. 2 is a plan view showing the structure of a branch box.

FIG. 3 is a plan view showing a blower unit.

FIG. 4 is a rear view showing the blower fan.

FIG. 5 is a schematic diagram showing various operation modes.

FIG. 6 is a plan view of a main part showing an arrangement structure of a heat storage capsule.

FIG. 7A is a front view of the heat storage capsule, and FIG. 7B is a side view of the heat storage capsule.

FIG. 8 is a partially enlarged sectional view of a heat storage capsule showing a regulation member.

FIG. 9 is a perspective view showing the structure of a heat storage tank.

FIG. 10 is a plan view of the tank body

FIG. 11 is a perspective view of a partial cross section showing the heat storage tank in a state where the lid is closed.

FIG. 12 is a sectional view of the bottom of the heat storage tank showing the structure of the uneven portion.

FIG. 13 is a sectional view of a heat storage tank.

FIG. 14 is a side view showing another attachment structure of the blower unit with the branch box.

[Explanation of symbols]

41 First wall 42 Second wall 43 Internal space 54 Bottom 57 Concavo-convex part 58 Vertical drain 59 Horizontal drain 60 drainage basin 61 drainage pipe C heat storage capsule L heat storage capsule row

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Yuji Tsubota             4-1, Egasaki-cho, Tsurumi-ku, Yokohama-shi, Kanagawa             Tokyo Electric Power Co., Inc. F-term (reference) 3L050 BF07                 3L053 BB10

Claims (3)

[Claims] 1. A heat storage tank capable of accommodating a large number of heat storage capsules in which an internal space for filling a heat storage material is formed between first and second wall surfaces facing each other. A plurality of heat storage capsule rows formed by aligning the first wall surface of one heat storage capsule and the second wall surface of the other heat storage capsule in adjacent ones of them in a first direction. Are aligned in a second direction along the surface of the first or second wall surface, and
Positioning irregularities for aligning the heat storage capsules in the first direction are formed on the bottom surface of the heat storage tank, and vertical drainage grooves extending in the first direction are provided on the bottom surface at positions corresponding to the heat storage capsule rows. The horizontal drains that are formed and communicate with the plurality of vertical drains are
A heat storage tank formed on the bottom surface in a state of extending in an oblique direction inclined with respect to the direction. 2. An inlet space and an outlet space for blowing air to the heat storage capsule group formed by arranging a plurality of the heat storage capsule rows in the second direction are formed by allocating to the location adjacent to the heat storage capsule group in the second direction. The heat storage tank according to claim 1, wherein a drainage basin communicating with the lateral drainage groove is formed on the bottom surface of the inlet space or the outlet space. 3. The heat storage tank according to claim 2, further comprising a drain pipe that guides the water accumulated in the drainage basin to the outside of the heat storage tank.