JPH0972584A - Thermal storage type cold water device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily mount a heating tube by inserting the tube into a plurality of slot-shaped through-holes formed in a pipe guide. SOLUTION: In each of heat transfer tubes 71, 71,... constituting a thermal storage heat exchanger, vertical tubes 72, 72,... are disposed on staggered patterns and the vertical tubes 72, 72,... are connected so as to be vertically staggered. In a heat storage tank, a tube guide 9U and a tube guide 9D for holding tubes 71, 71... are mounted to the upper part and lower part of the tank respectively. In addition, slot-shaped through-holes 91, 91,... each surrounding a pair of vertical tubes 72Pd, 72Pd are formed in the lower tube guide 9D so as to be inclined with respect to the direction of the row of the tubes. And in the upper tube guide 9U, there are formed slot through-holes 91, 91,... each surrounding a pair of vertical tubes 72Pu, 72Pu,... of tubes 71, 71... are inclined in the diagonally opposite direction to the direction of the through-holes 91, 91,... of the lower guide 9D.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat storage type cold water device used for cooling various plants, air conditioning, etc.
This relates to the structure of the heat storage tank.

[0002]

2. Description of the Related Art A heat storage type chilled water apparatus of this type includes a heat storage unit connected to a chilling unit having a compressor and a heat source side heat exchanger. The heat storage unit is configured such that a water system for cooling water is connected to the heat storage tank, and a heat storage heat exchanger for immersing and storing heat in the cooling water is provided in the heat storage tank.

Since the heat storage heat exchanger is composed of a plurality of heat transfer tubes, it is necessary to attach the heat transfer tubes to the heat storage tank. At that time, if the upper part and the lower part of the heat transfer tube are attached to the frame of the heat storage tank with a fastener such as a U band, it is necessary to attach a large number of points of the heat transfer tube, which causes a problem of requiring a lot of trouble. .

Therefore, as disclosed in Japanese Utility Model Publication No. 5-14120, parallelogram and trapezoidal support members formed by combining equilateral triangles are formed, and a large number of support members are connected to each other, while the support members are connected. There is one in which a vertical tube of a heat transfer tube is inserted into a fixed groove formed in the above to support the heat transfer tube.

[0005]

However, in the heat storage unit described above, it is necessary to connect a large number of supporting members to each other, and moreover, all the vertical tubes of the heat transfer tubes must be pushed into the fixing grooves. However, there is a problem that the time and labor of the assembly work are not sufficiently reduced.

Further, since the vertical tube of the heat transfer tube is pushed into the fixing groove, the supporting member is made of a flexible synthetic resin. However, since the supporting member is immersed in cooling water,
There was a problem of low durability and lack of reliability.

The present invention has been made in view of the above point, and facilitates the attachment of the heat transfer tubes by inserting the heat transfer tubes into a plurality of elongated through holes formed in the pipe guide. Some are intended to do.

[0008]

In order to achieve the above object, as shown in FIG. 5, the means taken by the invention according to claim 1 is as follows. First, a compressor (21) and a heat source side heat exchanger. (twenty three)
The heat storage unit (30) is connected to the chilling unit (20) having the above by the refrigerant pipes (3L, 3G) to form a refrigerant circuit (11) in which the refrigerant can circulate, while the heat storage unit (30) is , A heat storage tank (60) for storing the heat storage liquid (3W), a liquid system (40) connected to the heat storage tank (60) for circulating the heat storage liquid (3W), and the heat storage liquid (3W )
It is premised on a heat storage type cold water device which is provided with a heat storage heat exchanger (70) for immersing heat in a heat storage tank (60) and storing the heat.

The heat storage heat exchanger (70) is formed by a plurality of heat transfer pipes (71, 71, ...) Communicating with the refrigerant pipes (3L, 3G). Each of the heat transfer tubes (71, 71, ...)
A plurality of vertical pipes (72, 72, ...) And a curved upper pipe (73, 73, ...) And a lower pipe (74, 74,) that connect the vertical pipes (72, 72, ...)
...) and is configured vertically. Further, in the heat storage tank (60), pipe guides (9U, 9D, ...) Holding the heat transfer tubes (71, 71, ...) Are attached at least to the upper and lower portions of the heat storage tank (60). In addition, the lower pipe guide (9D) has a pair of vertical pipes (72) composed of two vertical pipes (72, 72) continuous by the lower pipes (74, 74, ...).
Pd, 72Pd, ...) Through holes (91, 91, ...) Through the lower pipes (74, 74, ...) Are formed, while the upper pipe (9U) is provided with an upper pipe (9U). 73, 73, ...) A pair of vertical tubes (72Pu, 72Pu, ...) Consisting of two vertical tubes (72, 72) connected through the upper tube (73, 73, ...) Holes (91, 91, ...) are formed, and the heat transfer tubes (71, 71, ...) are inserted into the through holes (91, 91, ...) of the lower pipe guide (9D) and the upper pipe guide (9U). It is held in the inserted state.

The means taken by the invention according to claim 2 is the heat transfer tube (71, 71,
…) Vertical pipes (72, 72,…) are arranged in a zigzag pattern to form a sawtooth shape in plan view, while the through holes (91, 91,…) of the lower pipe guide (9D) are vertical pipes. 2 of pair (72Pd, 72Pd, ...)
The vertical holes (91, 91, ...) of the upper pipe guide (9U) are formed as long holes extending over the vertical pipes (72, 72) and inclined with respect to the arrangement direction. (72Pu, 72Pu, ...) Long holes extending over the two vertical pipes (72, 72) and through holes (91, 91, 91) of the lower pipe guide (9D) in the arrangement direction.
() Is formed by a long hole inclined in the opposite direction.

The means taken by the invention according to claim 3 is the pipe guide (9
U, 9D, ...) have a circulation hole (9) through which the heat storage liquid (3W) passes.
2, 92, ...) are formed.

The means taken by the invention according to claim 4 is that in the invention according to claim 1, in the heat storage tank (60),
An intermediate pipe guide (9M) with the same shape as the lower pipe guide (9D) is provided, and the above lower pipe guide (9D)
Also, the heat transfer tubes (71, 71, ...) are inserted through the through holes (91, 91, ...) with the intermediate pipe guide (9M) attached to the heat storage tank (60).
The upper pipe guide (9U) through hole (91,
The heat transfer tubes (71, 71, ...) are inserted into the heat transfer tubes (7), and the upper pipe guide (9U) is attached to the heat storage tank (60).
1, 71, ...) are fixedly held.

In the present invention, for example, during the heat storage operation for storing cold heat, the high-pressure refrigerant discharged from the compressor (21) is condensed in the heat source side heat exchanger (23). Then, it becomes a liquid refrigerant, and the liquid refrigerant flows into the heat storage unit (30), evaporates in the heat storage heat exchanger (70), becomes a gas refrigerant, and returns to the compressor (21).

Then, each heat storage heat exchanger (70, 70,
...) exchanges heat with the heat storage liquid (3 W), and the heat storage liquid (3 W)
W) is cooled to generate ice on the surface of each heat transfer tube (71, 71, ...) And cold heat is stored in the heat storage tank (60).

During the cooling operation utilizing the cold heat, the high-pressure refrigerant discharged from the compressor (21) is condensed in the heat source side heat exchanger (23) to become a liquid refrigerant. It is evaporated in the side heat exchanger (26) and becomes a gas refrigerant and returns to the compressor (21). Then, the heat storage liquid (3 W) is wholly or partly flown to the heat storage tank (60) after being cooled by the use side heat exchanger (26) from the liquid system (40),
After being cooled by the ice generated on the surfaces of the heat transfer tubes (71, 71, ...), they flow through the outward path (41) of the liquid system (40) and exchange heat with air or the like in the cooling section.

On the other hand, the heat transfer tubes (71, 71, ...) In the heat storage unit (30) are assembled by, for example, the heat storage tank (6).
After assembling the frame to be installed in 0), attach the lower pipe guide (9D) and, if necessary, the intermediate pipe guide (9M) to the frame with bolts at both ends. After that, the vertical tube pair (72Pd, 72Pd, ...) Of each heat transfer tube (71, 71, ...) Is inserted into the through hole (91, 91, ...) From above.

Subsequently, the through holes (91, 91, ...) Of the upper pipe guide (9U) are connected to the vertical pipe pairs (72) of the heat transfer tubes (71, 71, ...).
Pu, 72Pu, ...) and attach the upper pipe guide (9U) to the frame with bolts at both ends.

Thus, by inserting the vertical pipe pairs (72Pd, 72Pu, ...) Of the heat transfer tubes (71, 71, ...) Into the through holes (91, 91, ...) , 71, ...) are supported by the heat storage tank (60). At that time, the lower pipe (74,
74, ...) and the upper tubes (73, 73, ...) cause a restoring force to the vertical tubes (72, 72) of each vertical tube pair (72Pd, 72Pu, ...) in the opening direction of the open ends. The heat transfer tubes (71, 71, ...) are firmly fixed to the pipe guides (9U, 9M, 9D) by force.

[0019]

Therefore, according to the present invention, the vertical pipe pairs of the heat transfer tubes (71, 71, ...) Are inserted into the through holes (91, 91, ...) Formed in the respective pipe guides (9U, 9D, ...). Since the heat transfer pipes (71, 71, ...) Are fixed by inserting (72Pd, 72Pu, ...), the heat transfer pipes (71, 71, ...) are conventionally formed.
It is not necessary to fix the upper part and the lower part of the product with multiple fasteners. As a result, since the assembling work of the heat transfer tubes (71, 71, ...) Can be simplified, the assembling work time and labor can be shortened.

Further, unlike the conventional support member, the work of connecting the support members can be eliminated, and the work of pushing the support members into the fixing groove is not required. Therefore, the work time and labor can be further reduced. be able to.

Since the heat transfer tubes (71, 71, ...) Are only inserted into the through holes (91, 91, ...), the pipe guides (9U, 9D, ...) Are formed of steel plates or the like. Since the durability can be improved as compared with the conventional synthetic resin supporting member, the reliability can be improved.

Further, the lower tubes (74, 74, ...) And the upper tubes (73, 73, ...) Of the heat transfer tubes (71, 71, ...) And the vertical tubes of each vertical tube pair (72Pd, 72Pu, ...). (72, 72, ...) A restoring force is generated in the opening direction of the open end, and this restoring force causes the heat transfer tubes (71, 71, ...) to move the pipe guides (9U, 9M, 9).
Since it is firmly fixed to D), there is no need for a separate fixing member, and the number of parts can be reduced.

Further, according to the invention of claim 2, since the heat transfer tubes (71, 71, ...) Are formed in a sawtooth shape in a plan view, the heat transfer area of one heat transfer tube (71) is reduced. Can be large.

According to the third aspect of the invention, the circulation holes (92, 92, ...) Are provided in the pipe guides (9U, 9D, ...).
Since the heat storage liquid (3W) can be smoothly circulated, the efficiency of cooling the heat storage liquid (3W) and the like can be improved.

[0025]

Embodiments of the present invention will be described below in detail with reference to the drawings.

As shown in FIGS. 1 and 2, the heat storage type cold water device (10) is constructed by connecting a heat storage unit (30) to a chilling unit (20) to generate cooling water (3 W) and to generate various kinds of water. It constitutes a refrigeration system used for plant cooling and air conditioning.

The chilling unit (20) includes a compressor (2
1), an oil separator (22), an air heat exchanger (23) that is a heat source side heat exchanger equipped with a fan (2F), and a receiver (2
4), a chilling side solenoid valve (SV-1), a capillary tube (25) that is an expansion mechanism, and a water heat exchanger (26) are connected in order by a refrigerant pipe (2a).
The water heat exchanger (26) is a shell-and-tube heat exchanger, and one end thereof is a capillary tube (25).
The other end is connected to the compressor (21), and as shown in FIG. 2, the forward path (41) and the return path (42) of the water system (40) through which the cooling water (3W) circulates are connected. There is.

The compressor (21) and the electric three-way valve (4V) described later are connected to the controller (50) to control the operating capacity of the compressor (21). .

The heat storage unit (30) is connected to the chilling unit (20) by a liquid side refrigerant pipe (3L) and a gas side refrigerant pipe (3G), and the heat storage unit (30) and the chilling unit (20) are connected to each other. This constitutes a closed-circuit refrigerant circuit (11) in which the refrigerant can circulate. The liquid side refrigerant pipe (3L) is connected between the receiver (24) and the chilling side solenoid valve (SV-1) via the heat storage side solenoid valve (SV-2), while the gas side refrigerant is connected. The pipe (3G) is connected to the suction side of the compressor (21) via a one-way valve (CV).

The heat storage unit (30) is provided with cooling water (3
W) is stored in a heat storage tank (60) in which a plurality of heat storage heat exchangers (70, 70, ...) Are housed, and the heat storage heat exchanger (7
0, 70, ...) are connected to the branch pipes (3L-a, 3G-a, ...) Of the liquid side refrigerant pipe (3L) and the gas side refrigerant pipe (3G). The liquid branch pipe (3L-a) has a temperature-sensing heat storage expansion valve (3L-a).
1) is provided, and a liquid gas heat exchanger (32) is provided between the liquid branch pipe (3L-a) and the gas branch pipe (3G-a), and the gas branch pipe (3G-a) is provided. Is provided with a temperature sensing part (31-a) of the heat storage expansion valve (31) on the downstream side of the liquid gas heat exchanger (32).

Further, the inlet side and the outlet side of the heat storage tank (60) are connected to the outward path (41) of the water system (40), and the inlet side is connected to the water system (40) by an electric three-way valve (4V). It is connected to the. As shown in FIG. 2, in the water system (40), a circulation pump (4P) is provided in the outward path (41), and although not shown, it is connected to a cooling unit and is a cooling water (heat storage liquid). 3W) constitutes a circulating liquid system. Then, the cooling water (3 W) flows from the return path (42) of the water system (40) into the water heat exchanger (26) to be cooled, and then from the outward path (41) of the water system (40) to the electric three-way direction. All or part of the heat flows through the valve (4V) to the heat storage unit (30), is cooled again, and then returns to the forward path (41) to return to the cooling water (3W) from the water heat exchanger (26) and store heat. The cooling water (3 W) from the unit (30) is joined so as to have a predetermined temperature (for example, 2 ° C.) and is supplied to the cooling unit.

Further, the heat storage tank (60) is provided with a water level sensor (LS) for detecting the amount of ice making, and is also connected with an air system (80). The air system (80) includes a supply pipe (82) and a suction pipe (8) connected to an air pump (81).
3) and are connected to the heat storage tank (60), and the supply pipe (8
2) is introduced under the heat storage tank (60). And
The air system (80) supplies bubbles to the cooling water in the heat storage tank (60) to stir the cooling water to promote ice making and defrosting.

The heat storage tank (60) has a drain pipe (6
d), an overflow pipe (6f) and a makeup water pipe (6p) are provided.

As a feature of the present invention, as shown in FIGS. 3 to 5, the heat storage heat exchanger (70, 70, ...) Stores heat via three upper and lower pipe guides (9U, 9M, 9D). It is attached to the support frame (61, 61) of the tank (60).

Specifically, the heat storage tank (60) is provided with four heat storage heat exchangers (70, 70, ...) And supports two heat storage heat exchangers (70, 70). Two sets of support frames (61, 61) are provided. The support frame (61, 61) is provided with columns (62, 62, ...) Standing at four corners, and two columns (62, 62) are provided on the front surface, the back surface, and the left and right side surfaces. Horizontal frames (63, 63, ...) Are provided in the upper part, the middle part and the lower part.

The heat storage heat exchangers (70, 70, ...) Have a plurality of heat transfer tubes (71, 7) which are vertically arranged and meander vertically.
1), and one heat transfer tube (71) constitutes one path. In the present embodiment, 14 heat transfer tubes (71,
71, ...) are formed in 14 passes. And
Each heat storage heat exchanger (70, 70, ...) has two heat transfer tubes (71, 71) arranged in the front-rear direction with the A side in FIG. 3 as the front, and seven heat transfer tubes (71, 71, 71) in the left-right direction. ...) are arranged and two heat storage heat exchangers (70, 70) are provided in the front-rear direction, so four heat transfer tubes (71, 71, ...) are arranged.

The heat transfer pipes (71, 71, ...) Of the heat storage heat exchangers (70, 70, ...) Are connected to the liquid branch pipe (3L-a) through the flow divider (7D), It is connected to the gas branch pipe (3G-a) via the header (7H). As described above, the liquid branch pipe (3L-a) is provided with the heat storage expansion valve (31) and the liquid branch pipe. A liquid gas heat exchanger (32) is provided between (3L-a) and the gas branch pipe (3G-a).

As shown in FIGS. 6 and 7, each of the heat transfer tubes (71, 71, ...) Has a sawtooth shape in plan view, that is, eight vertical tubes (72, 72, ...). And each vertical pipe (72, 72,
4) U-shaped curved lower pipes (74,
74, ...) and three U-shaped curved upper tubes (73, 73, ...) that connect the upper portions of the six vertical tubes (72, 72, ...) excluding the vertical tubes (72, 72) on both sides. It is formed by a vertical pipe on both sides (72, 7
The upper end of 2) is connected to the shunt (7D) and header (7H). The vertical tubes (72, 72, ...) Are arranged in a zigzag manner, and the saw-toothed opening angle W is formed to be 60 degrees.

The lower pipe guide (9D), the intermediate pipe guide (9M) and the upper pipe guide (9U) support the heat transfer tubes (71, 71, ...) Of the two heat storage heat exchangers (70, 70). Therefore, seven pipe guides (9U, 9M, 9D) are provided so as to support the four heat transfer tubes (71, 71, ...). Since FIG. 5 shows a schematic configuration, each pipe guide (9U, 9M, 9D) has two
Supports two heat transfer tubes (71, 71, ...).

As shown in FIGS. 8 to 10, the lower pipe guide (9D) and the intermediate pipe guide (9M) have the same shape and are formed in a long flat plate shape. The lower pipe guide (9D) and the intermediate pipe guide (9M) have a plurality of through holes (91, 91, ...) Through which the heat transfer tubes (71, 71, ...) Through,
A plurality of circulation holes (92, 92, ...) Through which cooling water (3W) passes are arranged alternately in the longitudinal direction.

Further, the through holes (91, 91, ...) Of the lower pipe guide (9D) and the intermediate pipe guide (9M) are the lower pipes (74, 74, ...) Of the heat transfer pipes (71, 71, ...). A pair of vertical tubes (72P) consisting of two vertical tubes (72, 72) continuous by
d), 72Pd, ...) Are formed so as to penetrate through the lower tubes (74, 74, ...). Specifically, the through hole (9
, 91) are long holes extending over the two vertical pipes (72, 72) of the pair of vertical pipes (72Pd, 72Pd, ...), and are inclined with respect to the arrangement direction, and one heat transfer pipe ( Four are formed for 71).

On the other hand, the upper pipe guide (9U) is, as shown in FIGS. 11 and 12, the lower pipe guide (9D).
It is formed in a long flat plate shape similar to the above. The upper pipe guide (9U) has a plurality of through holes (91, 91, ...) through which the heat transfer tubes (71, 71, ...) pass, and a plurality of circulation holes (92, 92, ...) through which cooling water (3W) passes. ) And are arranged in the longitudinal direction.

Further, the through-holes (91, 91, ...) Of the upper pipe guide (9U) are provided with two vertical pipes continuous by the upper pipes (73, 73, ...) Of the heat transfer tubes (71, 71, ...). Pipe (72,
72) consisting of a pair of vertical tubes (72Pu, 72Pu, ...)
3, 73, ...) are formed so as to penetrate therethrough.
Specifically, the through holes (91, 91, ...) Are the vertical pipe pairs (72P
u, 72Pu, ...) with two long tubes (72,72)
In addition, three heat transfer tubes (71) are formed while being inclined in the direction opposite to the through holes (91, 91, ...) Of the lower pipe guide (9D) with respect to the arrangement direction. The upper pipe guide (9U) is formed with circular holes (93, 93, ...) Through which the vertical tubes (72, 72, ...) At both ends of the heat transfer tubes (71, 71) pass.

The above pipe guides (9U, 9M, 9D) are attached to the horizontal frame (63, 63) at both front and rear ends,
Folding pieces (94, 94) are formed on both left and right sides,
Edges (95) such as through holes (91, 91, ...) Are formed downward in the lower pipe guide (9D) and the intermediate pipe guide (9M), while through holes are formed in the upper pipe guide (9U). Edges (95) such as (91, 91, ...) Are formed upward.

The heat transfer tubes (71, 71, ...)
The lower pipe guide (9D), the intermediate pipe guide (9M), and the upper pipe guide (9U) are held in the respective through holes (91, 91, ...). Each heat transfer tube (7
Although not shown, the lower tubes (74, 74, ...) of the heat transfer tubes (71, 71, ...) contact the support table provided in the heat storage tank (60) to vertically move the heat transfer tubes (71, 71, ...). It is positioned.

-Heat Storage and Cooling Operation- Next, the operation of the heat storage type cold water device (10) will be described.

First, during the heat storage operation for storing cold heat (during ice making operation), the chilling side solenoid valve (SV-1) is closed and the heat storage side solenoid valve (SV-2) is opened, and the compressor ( 2
The high-pressure refrigerant discharged from 1) is condensed in the air heat exchanger (23) to become a liquid refrigerant, and is temporarily stored in the receiver (24). Thereafter, the liquid refrigerant does not flow into the water heat exchanger (26) but flows into the heat storage unit (30), and the heat storage heat exchangers (70,
70, ...) and after decompressing by each heat storage expansion valve (31), it evaporates in each heat storage heat exchanger (70, 70, ...) and becomes a gas refrigerant and returns to the compressor (21). Become.

The heat storage heat exchangers (70, 70,
...) exchanges heat with the cooling water (3W), cools the cooling water (3W) to generate ice on the surface of each heat transfer tube (71, 71, ...),
Cold heat will be stored in the heat storage tank (60). The amount of ice produced thus generated is detected by a water level sensor (LS).

During the cooling operation utilizing the cold heat, the chilling side solenoid valve (SV-1) is opened and the heat storage side solenoid valve (SV-2) is closed, and the refrigerant is discharged from the compressor (21). The high-pressure refrigerant is condensed in the air heat exchanger (23) to become a liquid refrigerant, and is temporarily stored in the receiver (24). Thereafter, the liquid refrigerant does not flow into the heat storage unit (30), is depressurized by the capillary tube (25), and is evaporated by the water heat exchanger (26),
It becomes a gas refrigerant and returns to the compressor (21).

On the other hand, the cooling water (3W) is so-called feed water temperature controlled, and is supplied from the return path (42) of the water system (40) to the water heat exchanger (2).
It flows to 6), is heat-exchanged with a refrigerant, and is cooled, for example, cooling water (3W) is cooled to 7 degreeC. Then, all or part of the cooling water (3W) exiting the water heat exchanger (26) flows into the heat storage tank (60) through the electric three-way valve (4V), that is, is cooled by the heat storage unit (30). The cooling water (3W) and the cooling water (3W) cooled only by the water heat exchanger (26).

The cooling water flowing into the heat storage tank (60) is
After being cooled by the ice generated on the surface of the heat transfer tubes (71, 71, ...), it will be returned to the outward path (41) of the water system (40) and cooled only by the water heat exchanger (26). It joins the cooling water (3W) and is controlled to, for example, 2 ° C cooling water (3W).
The cooled cooling water (3 W) flows into the cooling section and exchanges heat with air or the like in the cooling section.

-Assembly Operation of Heat Transfer Tubes (71, 71, ...)-Next, the assembly operation of the heat transfer tubes (71, 71, ...), which is a feature of the present invention, will be described. First, the support frame (6
After assembling 1, 61), attach the lower pipe guide (9D) and the intermediate pipe guide (9M) to the horizontal frame (63, 63) with bolts at both ends. After that, each heat transfer tube (71,
71, ...) Vertical pipe pairs (72Pd, 72Pd, ...)
1,…) from above.

Subsequently, the through holes (91, 91, ...) Of the upper pipe guide (9U) are connected to the vertical pipe pairs (72) of the heat transfer tubes (71, 71, ...).
Pu, 72Pu, ...) and attach the upper pipe guide (9U) to the horizontal frame (63, 63) with bolts at both ends.

Thus, by inserting the vertical pipe pairs (72Pd, 72Pu, ...) Of the heat transfer tubes (71, 71, ...) Into the through holes (91, 91, ...) , 71, ...) are supported by the heat storage tank (60). At that time, the lower pipe (74,
74, ...) and the upper tubes (73, 73, ...) cause a restoring force in the opening direction of the vertical tubes (72, 72, ...) of each vertical tube pair (72Pd, 72Pu, ...). The heat transfer tubes (71, 71, ...) are firmly fixed to the pipe guides (9U, 9M, 9D) by the restoring force.

-Effects of this Embodiment- As described above, according to this embodiment, the heat transfer tubes (71) are inserted into the through holes (91, 91, ...) formed in the pipe guides (9U, 9M, 9D). , 71, ...), the heat transfer tubes (71, 71, ...) are fixed by inserting a pair of vertical tubes (72Pd, 72Pu, ...). It is not necessary to fix the upper part and the lower part of (...) with fasteners at multiple points. As a result, since the assembling work of the heat transfer tubes (71, 71, ...) Can be simplified, the assembling work time and labor can be shortened.

Further, unlike the conventional support member, the work of connecting the respective support members can be eliminated, and the work of pushing into the fixed groove is not required, so that the work time and labor can be further reduced. be able to.

Since the heat transfer tubes (71, 71, ...) Are only inserted into the through holes (91, 91, ...), the pipe guides (9U, 9M, 9D) should be formed of steel plates or the like. Since the durability can be improved as compared with the conventional synthetic resin supporting member, the reliability can be improved.

Further, since the heat transfer tubes (71, 71, ...) Are formed in a sawtooth shape in plan view, the heat transfer area of one heat transfer tube (71) can be increased.

Further, the lower tubes (74, 74, ...) And the upper tubes (73, 73, ...) Of the heat transfer tubes (71, 71, ...) And the vertical tubes of each vertical tube pair (72Pd, 72Pu, ...). (72, 72, ...) A restoring force is generated in the opening direction of the open end, and this restoring force causes the heat transfer tubes (71, 71, ...) to move the pipe guides (9U, 9M, 9).
Since it is firmly fixed to D), there is no need for a separate fixing member, and the number of parts can be reduced.

Further, each of the above pipe guides (9U, 9M, 9D)
Since the circulation holes (92, 92, ...) Are formed in the cooling water (3W), the cooling water (3W) can be smoothly circulated, so that the cooling efficiency of the cooling water (3W) can be improved.

[0061]

Other Embodiments In the above embodiment, the heat transfer tubes (71, 71, ...) Are formed in a saw-tooth shape in plan view, but in the invention according to claim 1, they extend linearly in plan view. That is, the heat transfer tubes (71, 71, ...) May meander only in the vertical direction.

Further, the vertical tubes (72, 72) of the heat transfer tubes (71, 71, ...).
72, ...), through holes (91, 91, ...) and circulation holes (9
2, 92, ...) is not limited to the above embodiment, and the pipe guides (9U, 9M, 9D) are only the upper pipe guide (9U) and the lower pipe guide (9D). Alternatively, conversely, a plurality of intermediate pipe guides (9M) may be provided.

In the present invention, the heat storage liquid (3W) may be brine or the like, and the chilling unit (20).
Is not limited to the embodiment.

[Brief description of drawings]

FIG. 1 is a system diagram of a refrigerant system showing a heat storage type cold water device.

FIG. 2 is a system diagram of a water system and an air system showing a heat storage type cold water device.

FIG. 3 is a schematic plan view of a heat storage unit.

FIG. 4 is a schematic side view of a heat storage unit.

FIG. 5 is a schematic perspective view showing a part of the heat storage heat exchanger.

FIG. 6 is a plan view of a heat transfer tube.

FIG. 7 is a front view of a heat transfer tube.

FIG. 8 is a plan view of a lower pipe guide and an intermediate pipe guide.

FIG. 9 is a side view of a lower pipe guide and an intermediate pipe guide.

FIG. 10 is a front view of a lower pipe guide and an intermediate pipe guide.

FIG. 11 is a plan view of the upper pipe guide.

FIG. 12 is a front view of an upper pipe guide.

[Explanation of symbols]

 10 Heat storage type cold water system 11 Refrigerant circuit 20 Chilling unit 21 Compressor 23 Air heat exchanger (heat source side heat exchanger) 30 Heat storage unit 40 Water system (liquid system) 60 Heat storage tank 70 Heat storage heat exchanger 71 Heat transfer pipe 72 Vertical pipe 72Pu, 72Pd73 Vertical pipe pair 73 Upper pipe 74 Lower pipe 9U, 9M, 9D Pipe guide 91 Through hole 92 Circulating hole

Claims (4)

[Claims] 1. A compressor (21) and a heat source side heat exchanger (23)
The heat storage unit (30) is connected to the chilling unit (20) having the above by a refrigerant pipe (3L, 3G) to form a refrigerant circuit (11) in which the refrigerant can circulate, while the heat storage unit (30) is , A heat storage tank (60) for storing the heat storage liquid (3W), a liquid system (40) connected to the heat storage tank (60) for circulating the heat storage liquid (3W), and the heat storage liquid (3W ) And a heat storage heat exchanger (70) provided in the heat storage tank (60) for storing heat, and the heat storage type cold water device, wherein the heat storage heat exchanger (70) is a refrigerant pipe ( 3L, 3G) are formed by a plurality of heat transfer tubes (71, 71, ...) Communicating with each of the heat transfer tubes (71, 71, ...) And a plurality of vertical tubes (72, 72,
...) and the vertical tubes (72, 72, ...) that connect the curved upper tube (7
3, 73, ...) and lower tubes (74, 74, ...) are vertically arranged, while the heat storage tank (60) holds a heat transfer tube (71, 71, ...). (9U, 9D, ...) is at least a heat storage tank (6
0) attached to the upper and lower parts of the lower pipe guide (9D), the lower pipe (74, 74, ...)
A pair of vertical tubes (72Pd, 72Pd, ...) Consisting of two vertical tubes (72, 72) continuous by the through tube (91, 91, 91) passing through the lower tube (74, 74, ...). …) Is formed, and the upper pipes (73, 73, 73) are formed in the upper pipe guide (9U).
The vertical pipe pair (72Pu, 72Pu, ...) consisting of two vertical pipes (72, 72) connected by the upper pipe (73, 73, ...).
Through-holes (91, 91, ...) penetrating through the heat transfer tubes (71, 71, ...) are formed in the lower pipe guide (9
D) and each through hole of the upper pipe guide (9U) (91, 91,
The heat storage type cold water device is characterized in that it is held in a state of being inserted into. 2. The heat storage type cold water device according to claim 1, wherein the heat transfer tubes (71, 71, ...) Are formed in a sawtooth shape in plan view by arranging the vertical tubes (72, 72, ...) In a zigzag pattern. Meanwhile, the through holes (91, 91, ...) Of the lower pipe guide (9D) are long holes extending over the two vertical pipes (72, 72) of the vertical pipe pair (72Pd, 72Pd, ...) And The through holes (91, 91, ...) of the upper pipe guide (9U) are formed by elongated holes inclined with respect to the arrangement direction, and the two vertical pipes (72, 72Pu, 72Pu, ...) 72) and is formed as a long hole inclined in the direction opposite to the through holes (91, 91, ...) Of the lower pipe guide (9D) with respect to the arrangement direction. Heat storage type cold water device. 3. The heat storage type cold water device according to claim 1, wherein each pipe guide (9U, 9D, ...) Has a heat storage liquid (3W).
A heat storage type cold water device characterized in that a circulation hole (92, 92, ...) Through which is formed is formed. 4. The heat storage type cold water device according to claim 1, wherein the heat storage tank (60) is provided with an intermediate pipe guide (9M) having the same shape as the lower pipe guide (9D). (9D) and intermediate pipe guide (9
Heat transfer tubes (71, 7) with M) attached to the heat storage tank (60).
After inserting 1, ...) into the through holes (91, 91, ...), the heat transfer pipe (7) is inserted into the through holes (91, 91, ...) of the upper pipe guide (9U).
1, 71, ...) is inserted and the upper pipe guide (9U) is attached to the heat storage tank (60), and the heat transfer pipes (71, 71, ...) Are fixedly held.