JPH0718629B2 - Cooling water supply unit - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a cooling water supply unit for circulating cooling water between a large-capacity computer and a heat load, in particular, for mounting a large-capacity computer. Regarding the structure.

[Conventional technology]

In intelligent buildings and the like, large-capacity computer systems are often installed in the same building or the same floor in the building. On the other hand, in such a large-capacity computer system, a large amount of heat is generated from various electronic devices that make up the system, so that a cooling system for removing the generated heat outside the system is required. Therefore, in the past, for a computer system, a cooling water supply unit with a built-in heat exchanger that responds to the heat loads of multiple systems at once was manufactured and installed in the building, from which cooling water is circulated and supplied to the heat load of each system. The heat generated by electronic devices is removed to the outside of the system.

Next, FIG. 4 and FIG. 5 show a piping system diagram of the cooling water supply unit corresponding to the above-mentioned heat loads of a plurality of systems, and a mounting diagram of the inside of the conventional unit. Note that the illustration is an example of a unit that is compatible with the heat load of 10 systems, and each system has NO1
~ Expressed as NO10.

First, in FIG. 4, 1 is a common expansion tank for storing water that flows back from the heat load side of each system, 2 is a water supply pump for each system, 3 is a water cooling type heat exchanger, and water supply pump 2
Is equipped with two pumps for each system, including backup pumps. In addition, between the above-mentioned various devices, a return pipe 4 for each system that is collectively connected to the expansion tank 1, a common pipe 5 that is provided between the expansion tank 1 and the water pump 2 of each system, and a common pipe 5 are provided. A suction pipe 6a, a discharge pipe 6b, and an outlet pipe 7 for individually sending the cooling water to each system, which are branched and connected to each water pump 2, are provided. 8,9,10,11 are installed. Reference numeral 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 pipe joint for external connection attached to the pipe ends of the return pipe 4 and the outlet pipe 7.

With this configuration, the water that has recirculated from the heat load side for each system is collected and stored in the expansion tank 1 through the return pipe 4, and from here, the pressure is increased by the water supply pump 2 (the pump on the backup side is stopped) for each system, After being cooled by the exchanger 3, the heat load of each system is distributed and supplied through the outlet pipe 7. At the same time, a part of the water is sent to the bypass pipe 12, foreign matter contained in the water is filtered by the filter 13 and returned to the expansion tank 1. The heat exchanger 3 employs a double-tube type heat exchanger in which the primary side coil and the secondary side coil are concentrically arranged and meandering pipes are arranged.

Next, FIG. 5 shows a conventional specific mounting structure of the cooling water supply unit described above. In the figure, reference numeral 16 is an exterior case of the unit, and various devices described in FIG. 4 are assembled and installed in each case by model as shown in the figure. That is, the heat exchangers 3 corresponding to each of the systems NO1 to NO10 are arranged in a row in the left and right in the upper part of the center of the case, and below that, the water pumps 2 belonging to each system are arranged in accordance with the arrangement of the heat exchangers 3, And the common pipes 5 are distributed in the upper and lower stages, and all of the above-mentioned pipes 6a, 6b and 7 are collectively and centrally arranged on the front side of the case 16 between these devices. ing. The expansion tank 1, filter 13, and return pipe 4 are located on the right side of the outer case.
However, the primary side pipe 14 of the heat exchanger 3 is provided on the left side portion. The various valves described in FIG. 4 are omitted in FIG. Although not shown in the figure, all external pipes connecting to the heat load are laid under the floor of the free access floor of the building.These external pipes rise from the floor and return to the chilled water supply unit side. Piping
4, Connected to the outlet pipe 7 through a pipe joint.

[Problems to be Solved by the Invention]

By the way, the conventional mounting structure of the cooling water supply unit configured as shown in FIG. 5 has the following problems. That is, (1) Since the heat exchangers 3 of each system (NO1 to NO10) are arranged side by side in one line inside the outer case 16, the water pumps are arranged in the upper and lower stages in order to correspond to this arrangement. The water supply pumps 2 for each system are arranged in a staggered arrangement, and as a result, it is inevitable that the size of the frontage of the outer case 16 is increased as a whole. For this reason, when the cold water supply unit assembled in the factory is carried into an installation site such as a building, there is a possibility that the unit cannot be carried by the elevator in the assembled state due to the restriction of the indoor space of the elevator in the building.

(2) Various pipes according to the arrangement of the heat exchanger 3 described above
Since all of 6a, 6b, and 7 are concentrated on the front side of the outer case 16, the arrangement of the pipes is dense, and only a small gap can be secured between the pipes. For this reason, it is very difficult to open and close various valves installed in the middle of the piping (usually lever operated valves are used so that they can be opened and closed manually during maintenance and inspection).

The present invention has been made in view of the above points, and by improving the layout of various devices installed in an outer case and a part of piping, the entire unit can be made small and compact, and at the same time, it can be installed in the piping. An object of the present invention is to provide a mounting structure of a cooling water supply unit in which the mounted valve can be easily operated to improve maintainability.

[Means for Solving the Problems]

In order to solve the above problems, in the cooling water supply unit according to the present invention, the heat exchanger corresponding to each system and the outlet pipe on the cold water delivery side drawn from the heat exchanger are divided into two groups. One of the groups is mounted on the front side of the outer case and the other is mounted on the back side of the outer case.

[Action]

With the above configuration, the heat exchangers for a plurality of systems are arranged side by side in two rows in the outer case, so the number of heat exchangers arranged side by side is half that in the conventional mounting structure.
Further, the water supply pumps connected to the heat exchangers arranged in front and rear in alignment with the above-mentioned arrangement of the heat exchangers can be arranged one above the other, and thus the entire unit can be made compact and compact. Moreover, since the outlet pipes drawn out from the heat exchanger are distributed to the front and rear surfaces of the outer case in correspondence with the arrangement of the heat exchangers, the pipe arrangement in the case becomes rough to that extent and A sufficient space can be secured between the pipe and the outside to allow a hand to be inserted, and the valve interposed in the pipe can be easily operated.

〔Example〕

1 to 3 show an assembled structure 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 designated by the same reference numerals.

That is, while the basic piping system inside the unit is the same as that shown in FIG. 4, the heat exchanger 3 for each system corresponding to each system NO1 to NO10, and the cold water delivery side drawn from the heat exchanger 3 The outlet pipe 7 of the above is divided into two groups (systems NO1 to NO5 and systems NO6 to NO10), and the heat exchanger 3 belonging to the group (systems NO1 to NO5) and the outlet pipe 7 are the outer case 16 On the front side of the other group (systems NO6 to NO1
The heat exchanger 3 and the outlet pipe 7 belonging to 0) are distributed to the back side of the outer case 16 and arranged in two rows in the front and rear. In addition, the water supply pumps 2 for each system correspond to the arrangement of the heat exchangers 3.
Are arranged so as to overlap in the upper and lower stages as shown.

With such a configuration, the width dimension occupied by the arrangement of the heat exchangers 3 in the unit is 5 units, which is significantly reduced as compared with the width dimension of 10 units shown in FIG. Also, the arrangement of the water pump 2 does not need to be staggered as shown in FIG. 5, and as a result, the unit as a whole is smaller than the mounting structure shown in FIG.
It has a compact structure. Furthermore, since the outlet pipes 7 are distributed to the front and rear surfaces of the outer case 16 in accordance with the arrangement of the heat exchangers 3, there is a sufficient space between the pipes to insert a hand from the outside. Secure and various piping 6
It is possible to easily operate the valves 8, 9, 10 and 11 which are interposed in the middle of a, 6b, 7 and 8. In addition, the outlet pipe 7 is connected to the outer case 16
Even if the pipes are distributed before and after, the external pipes on the other side connected to them are piped below the floor surface of the free access floor of the building, so there is no hindrance to the pipe connection.

〔The invention's effect〕

Since the cooling water supply unit according to the present invention is configured as described above, it has the following effects.

(1) Compared to the conventional mounting structure, the entire unit is smaller,
Since it can be compactly constructed, it can be carried to the installation site on the upper floor by the elevator with almost no restrictions on the dimensions in the assembled state even when it is carried into the building.

(2) Since the outlet pipes are distributed on the front and rear surfaces, a sufficient space for valve operation can be secured between the pipes inside the outer case, and the valve operation performed during maintenance and inspection can be performed easily.

[Brief description of drawings]

1 to 3 show the configuration of an embodiment of the present invention, and FIG. 1 is a front layout view of a mounting structure inside a unit,
FIG. 2 is a sectional side view of FIG. 1, FIG. 3 is a perspective view of a main structure, FIG. 4 is a piping system diagram of a cooling water supply unit, and FIG. 5 is a front view of a conventional mounting structure inside the unit. It is a figure. In the figure, 1: expansion tank, 2: water pump, 3: heat exchanger, 4: return pipe, 7: outlet pipe, 16: outer case, NO1 to NO10: system.

Claims (1)

[Claims] 1. A cooling water supply unit for distributing and supplying cooling water to heat loads of a plurality of systems, an expansion tank for storing return water from each system in an outer case, a water supply pump for each system, and water cooling. A variety of equipment, such as a heat exchanger, is assembled and installed according to the model, and piping is provided between each equipment between the cooling water recirculation end and the delivery end. After dividing the exchanger and the outlet pipe on the cooling water delivery side drawn out from the heat exchanger into two groups, one of the groups is placed on the front side of the outer case,
A cooling water supply unit characterized in that the other side is mounted on the rear side.