JPH02219970A - Cooling water supply unit - Google Patents

Abstract

PURPOSE:To make the whole unit small and compact by dividing a heat exchanger corresponding to each system and outlet pipes of chilled water feeding side introduced from the exchanger into two groups, and distributing one of the groups to the front face side of an outer sheath case and the other to a rear side. CONSTITUTION:Heat exchanger 3 of systems corresponding to systems NO.1-NO.10 and outlet pipes 7 of chilled water feeding side introduced from the exchangers 3 are divided into two groups (systems NO.1-NO.5 and system NO.6-NO.10), the exchangers 3 and the pipes 7 belonging to one group (systems NO.1-NO.5) are disposed at the front face side of an outer sheath case 16, and the exchangers 3 and the pipes 7 belonging to the other group (systems NO.6-NO.10) are disposed at the back face side of the case 16 in two front and rear rows. Water feed pumps 2 of the systems are arranged to be superposed in upper and lower stages corresponding to the arrays of the exchangers 3. With such arrangement, the lateral size occupying the array of the exchangers 3 in the device is for 5 devices, thereby largely reducing in size. The array of the pumps 2 is also not necessarily disposed in a zigzag manner.

Description

Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a cooling water supply unit that circulates cooling water between a large-capacity comviator and the heat load, and sometimes its implementation. Regarding structure.

(Conventional technology) In intelligent buildings, etc., the same building.

Large-capacity computer systems are often installed on the same floor within a building. On the other hand, in such a large-capacity computer system, the various electronic devices that make up the system generate a large amount of heat, so a cooling system is required to remove the generated heat to the outside of the system. Therefore, conventionally, for comviator systems, a cooling water supply unit with a built-in heat exchanger that can handle the heat loads of multiple systems at once was manufactured and installed inside the building, and from there the cooling water was circulated and supplied to the heat loads of each system. This countermeasure is to remove the heat generated by the electronic equipment outside the system.

Next, Figures 4 and 5 show the piping system diagram of the cooling water supply unit that supports the heat load of multiple systems as described above, and the implementation diagram inside the conventional unit. This is an example of the corresponding unit, and each system is N
Represented by O1 to N010.

First, in Figure 4, 1 is the return r from the heat load side of each system.
2 is a water pump for each system, 3 is a water-cooled heat exchanger, and water pump 2 is a common expansion tank that stores water.
Two pumps, including a backup pump, are installed for each system. In addition, between the various devices mentioned above, there is a return pipe 4 for each system connected to the expansion tank 1 at once, a common pipe 5 piped between the expansion tank 1 and the water pump 2 of each system, and a common pipe 5 connected to the expansion tank 1. Suction piping 6a + discharge piping 6b of the pump is branched and piped between each water pump 2, outlet piping 7 for sending cooling water to each system individually, and pulp 8 is installed at key points of each piping. ．． , 9.10.11 is interposed. In addition, 12 is a bypass pipe including a filter 13 for water purification, 14 is a primary side pipe of the heat exchanger 3, and 15 is a return pipe 4. This is a pipe joint for external connection attached to the pipe end of the outlet pipe 7.

With this configuration, the water returned from the heat load side for each system is collected and stored in the expansion tank 1 through the return piping 4, and from there is boosted in pressure by the main sending pump 2 (the pump on the standby side is stopped) for each system, After being cooled by the heat exchanger 3, it is distributed and supplied to the heat loads of each system via the outlet piping 7. At the same time, a part of the water is sent to the bypass pipe 12, foreign substances contained in the water are filtered out by a filter 13, and the water is returned to the expansion tank 1.

Note that the heat exchanger 3 has a double-tube structure in which a primary side coil and a secondary side coil are arranged concentrically and meanderingly piped.

Next, a specific conventional mounting structure of the above-mentioned cooling water supply unit is shown in FIG. In the figure, reference numeral 16 denotes an exterior case of the unit, and inside this case, the various devices described in FIG. 4 are assembled and installed according to model as shown in the figure. That is, the heat exchangers 3 corresponding to each system Not-N0IO are arranged in left and right rows in the upper part of the center of the case, and below them are the water pumps 2 belonging to each system according to the arrangement of the heat exchangers 3. , and the common piping 5 are distributed in the upper and lower stages, and all the piping 6a, 6b, and 7, which are completely distributed between these devices, are in case 1.
The piping is concentrated all at once on the front side of 6.

Furthermore, an expansion tank l filter 13. and return piping 4, etc., and the primary side piping 14 of the heat exchanger 3 is provided on the left side.

Note that the various pulps mentioned in Figure 4 are not shown in Figure 5, and although not shown, all external piping connecting to the heat load is located on the raised floor of the building. These external pipings rise from the floor and connect to the return piping 4. on the cold water supply unit side. It is connected to the outlet piping 7 via a pipe joint.

[Problem to be solved by the invention]

By the way, the conventional cooling water supply unit mounting structure configured as shown in FIG. 5 has the following problems. That is, inside the +11 exterior case 16, each system (No1 to N0I
Since the heat exchangers 3 of O) are arranged side by side in left and right rows, in order to place the water pumps in corresponding positions in this arrangement, the water pumps 2 for each system distributed in the upper and lower stages must be arranged in a staggered manner.
As a result, it is unavoidable that the frontage dimension of the exterior case 16 increases as a whole unit. For this reason, when a cold water supply unit assembled in a factory is transported to an installation site such as a building, there is a possibility that the unit cannot be transported by elevator in the assembled state due to the indoor space limitations of the elevator in the building.

(2) In accordance with the arrangement of the heat exchanger 3 described above, all the various pipes 6a, 6b, 7, etc. are concentrated on the front side of the exterior case 16, so the arrangement of the pipes is dense, and the pipes and pipes are Only a small gap can be secured between the valve and the valve, which makes it difficult to open and close the various types of pulp installed in the pipe (usually lever-operated valves are used to open and close manually during maintenance and inspection). Very easy to do.

The present invention has been made in consideration of the above points, and by improving the layout of various equipment and a part of the piping installed inside the outer case, the entire unit can be made small and compact, and the piping can be made smaller. It is an object of the present invention to provide an actual VT structure of a cooling water supply unit that allows easy operation of the interposed pulp and improves maintainability.

In order to solve the above problems, in the cooling water supply unit according to the present invention, the outlet piping on the cold water delivery side drawn out from the heat exchanger corresponding to each system and the i heat exchanger is After dividing into two groups, one of the groups is allocated to the front side of the exterior case and the other is allocated to the threat side and mounted.

[Effect]

With the above configuration, the heat exchangers for multiple systems are arranged side by side on the front and back sides within the exterior case, so the number of heat exchangers lined up on the left and right sides is halved compared to the arrangement in the conventional mounting structure.

In addition, the water pumps connected to the heat exchangers arranged in front and behind can be arranged one above the other in alignment with the arrangement of the heat exchangers described above, and thereby the entire unit can be made compact. Moreover, the outlet piping drawn out from the heat exchanger is distributed and distributed on the front and rear sides of the exterior case in accordance with the arrangement of the heat exchanger, so the piping arrangement inside the case becomes coarser and the piping Sufficient space can be secured between the pipes to allow a hand to be inserted from the outside, making it easier to operate the valves interposed in the middle of the pipes.

(Embodiment) FIGS. 1 to 3 show the assembly configuration of a cooling water supply unit according to an embodiment of the present invention, and the same members corresponding to FIGS. 4 and 5 are given the same reference numerals. It is.

That is, while the basic piping system inside the unit is the same as that shown in FIG. 4, the heat exchangers 3. The outlet piping 7 on the cold water delivery side drawn out from the heat exchanger 3 is divided into two groups (system Nu
After dividing into ~N05 and system N0I5~N0IO),
On the other hand, heat exchanger 3 belonging to the group (system Not to N05). And the outlet piping 7 is located on the front side of the outer case 16 in the other group (system N).

Heat exchanger 3 belonging to 6-N0IO). The outlet piping 7 is distributed to the rear side of the exterior case 16 and arranged on two sides, front and rear. Further, corresponding to the arrangement of the heat exchangers 3, the water pumps 2 for each system are arranged so as to overlap in the upper and lower stages as shown in the figure.

With this configuration, the width dimension occupied by the array of heat exchangers 3 inside the unit is the width of five units, which is significantly smaller than the width dimension of the IO units shown in FIG.

Further, the water pumps 2 do not need to be arranged in a staggered manner as shown in FIG. 5, and as a result, the unit as a whole becomes smaller and more compact than the mounting structure shown in FIG. Furthermore, by distributing the outlet pipes 7 to the front and rear surfaces of the exterior case 16 in accordance with the arrangement of the heat exchangers 3, there is a sufficient gap between the pipes to allow a hand to be inserted from the outside. Various piping 6a, 6b, 7. Valve 8 inserted in the middle of 8. 9.10.11 operations can be performed easily.

Note that even if the outlet piping 7 is distributed to the front and back of the exterior case 16, the other external piping to be connected to these is installed under the floor of the free access floor of the building. There are no problems.

(Effects of the Invention) The cooling water supply unit according to the present invention is configured as described above, and has the following effects.

(1)Compared to the conventional mounting structure, the entire unit is smaller and
Since it can be constructed compactly, even when it is transported into the building, it is possible to carry the casing from the floor up to the site by elevator without being subject to any dimensional restrictions in the assembled state.

(2) Since the outlet piping is distributed on the front and rear surfaces, sufficient space for valve operation can be secured between the pipes inside the exterior case, making it easy to operate the valves during maintenance and inspection.

[Brief explanation of the drawing]

1 to 3 show the configuration of an embodiment of the present invention, and FIG. 1 is a front layout diagram of the mounting structure inside the unit;
Figure 2 is a cross-sectional side view of Figure 1, Figure 3 is a perspective view of the main structure, Figure 4 is a piping system diagram of the cooling water supply unit, and Figure 5.
In Figure 0, which is a front view of the conventional mounting structure inside Unisito, gJ is 1:11 tension tank, 2: water pump, 3: heat exchanger, 4: return piping, 7: outlet piping, 16:
Exterior case Figure 4 Figure 3

Claims (1)

[Claims] 1) A cooling water supply unit that distributes and supplies cooling water to the heat loads of multiple systems, with an expansion tank that stores return water from each system in the exterior case, a water pump for each system, and a water-cooled heat exchanger. A heat exchanger corresponding to each of the above-mentioned systems, in which various equipment such as a heat exchanger is assembled and installed according to model, and piping is provided between each equipment between the cooling water return end and the delivery end. The outlet piping on the cooling water delivery side drawn out from the heat exchanger is divided into two groups, and one of the groups is mounted on the front side of the exterior case and the other on the back side. cooling water supply unit.