JP2545859Y2 - Solution foreign matter removal device in absorption chiller / heater - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an absorption chiller / heater, and more particularly to a solution foreign matter removing apparatus for removing foreign matter from a solution circulating in an absorption chiller / heater.

[0002]

2. Description of the Related Art Generally, a solution circulating in an absorption chiller / heater contains foreign matter such as metal powder (mainly, welding spatter). The presence of such foreign matter is not preferable for normal operation of the solution pump. Conventionally, as shown in FIG. 9, a stainless steel wire woven wire mesh (hereinafter, referred to as a filter) 2 is provided in an absorption chiller / heater 1, and foreign matter is removed from the solution by the filter 2.

FIG. 10 shows a portion where the filter 2 is provided in detail. As shown in the figure, the filter 2 is provided in a solution downcomer 4 attached to the solution outlet 3,
Foreign matter is removed from the solution by flowing the solution with the pump 5 as shown by the arrow in the figure. The filter 2 has a substantially conical shape as shown in FIG. 11, and is installed such that the apex of the conical shape faces upward.

[0004] In some cases, the filter is installed so that the apex of the cone is located downward. Figure 1 shows this.
2. In FIG. 12, a conical filter 6 is provided in the solution downcomer 4 in a direction opposite to that in FIGS.

[0005]

However, in the above-mentioned conventional technique, when a large amount of foreign matter adheres to the filter,
The filter is clogged, the amount of circulating solution is reduced, and the capacity of the absorption chiller / heater is reduced. In the worst case, the operation of the absorption chiller / heater is stopped. Also,
When the filter is clogged, it is necessary to clean or replace the filter. For this purpose, the absorption chiller / heater must be disassembled, which is a very troublesome operation.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a solution foreign matter removing apparatus for an absorption chiller / heater, which can prevent the filter from being clogged and can reduce the maintenance work on the filter.

[0007]

In order to achieve the above object, the present invention provides a filter provided in the middle of a solution circulation flow path in an absorption chiller / heater, and the filter removes foreign matter in the solution. In the removing device, while temporarily storing the solution and causing a circulating flow in the stored solution,
A storage tank for discharging the solution from above is provided upstream of the filter.

The storage tank is provided with a magnet at least at the bottom.

The present invention is also directed to a solution foreign matter removing device for removing foreign matter in a solution by providing a filter in the middle of a solution circulation flow path in an absorption chiller / heater, wherein the filter has a cylindrical shape. An electromagnet is arranged facing the outer peripheral surface of the filter.

[0010]

According to the above construction, the solution flows into the storage tank to generate a circulating flow of the solution inside the storage tank, and the circulating flow causes the foreign matter in the solution to receive centrifugal force, and the foreign matter in the solution is further subjected to the foreign matter. Due to its own weight, it descends and accumulates at the bottom of the storage tank and is removed. In this case, if a magnet is provided at least at the bottom of the storage tank, if the foreign matter is metal, the effect of removing the foreign matter can be enhanced.

Further, if an electromagnet is arranged so as to face the outer peripheral surface of the cylindrical filter, it is possible to separate metal foreign matters adhering to the filter by separating them by the magnetic force of the electromagnet.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.

(First Embodiment) FIG. 1 shows a schematic configuration of a solution foreign matter removing apparatus according to a first embodiment of the present invention, and FIG. 2 shows part A of FIG. In FIG. 1, a circular hole is formed in the solution outlet portion 10,
A solution downcomer 12 having a filter 11 is provided below the hole. The solution outlet 10 and the solution downcomer 12 are connected by an intermediate member 13. That is, the intermediate member 13
Has a substantially cylindrical shape, the upper part of which is joined to the hole of the solution outlet 10, and the lower part of which is bent into an L-shaped cross section and joined to the solution descending tube 12. Further, the distal end of the solution downcomer 12 is disposed above the joint with the intermediate member 13, and the distal end and the intermediate member 13 form a storage tank 14.

A cap-shaped partition plate 15 is disposed above the tip of the solution downcomer 12 and above the storage tank 14.
The peripheral portion of the partition plate 15 is bent outward, and the space between the peripheral portion of the partition plate 15 and the intermediate member 13 (portion B in FIG. 2) is reduced.

In the solution foreign matter removing device having the above structure, the solution flowing to the solution outlet 10 is narrowed between the peripheral portion of the partition plate 15 and the intermediate member 13 (portion B in FIG. 2).
Through the reservoir 14. At this time, since the narrowed portion is provided at the peripheral portion of the storage tank 14, the solution flowing into the storage tank 14 becomes a circulating flow in the storage tank 14, and the foreign matter in the solution receives centrifugal force. The sediment settles at the bottom of the storage tank 14 by its own weight to form a foreign substance pool 16. Then, the solution from which the foreign matter has been removed overflows from the upper end of the storage tank 14 (the end of the solution downcomer 12) and flows toward the filter 2. As a result, relatively large foreign matter is completely removed from the solution flowing through the filter 2, and
The filter 2 can be prevented from being clogged.

Since foreign matter is mainly metal powder, in order to effectively remove the foreign matter, as shown in FIG.
A magnet 17 may be provided at the bottom of the. Although the magnet 17 is provided inside the bottom of the storage tank 14 in the drawing, the same effect can be obtained by providing the magnet 17 outside the bottom of the storage tank 14.

The magnet may be provided at a position immediately before the solution overflows, that is, at the tip of the solution downcomer 12, as shown in FIG. In this case, the foreign matter 16 is removed by the magnet 17 of the storage tank 14 and is also adsorbed by the magnet 18 at the distal end of the solution downcomer 12, so that the effect of removing the foreign matter can be further enhanced.
FIG. 5 is an enlarged view of a portion C in FIG. 4, and the solution is removed by the magnet 18 immediately before the solution overflows, and
6 shows a state in which 6 is formed.

As the amount of foreign matter contained in the solution increases, the foreign matter can be effectively removed by selecting a foreign matter removing apparatus having the structure shown in FIGS. 2, 3 and 4 in this order. When the amount of foreign matter contained in the solution is large, the capacity of the storage tank 14 may be increased. As a result, the maintenance and inspection cycle can be extended.

(Second Embodiment) FIG. 6 shows a second embodiment of the present invention.

In the drawing, a circular hole is formed in the solution outlet portion 10, and a solution downcomer 22 is provided below the hole. The solution outlet 20 and the solution downcomer 22 are connected by an intermediate member 23. That is, the intermediate member 23 has a substantially cylindrical shape, the upper part thereof is joined to the hole of the solution outlet 20, and the lower part is bent in an L-shape in cross-section, and
2 are joined. The intermediate member 23 has high magnetic permeability (however,
The coercive force is small. A cylindrical filter 21 is provided above the solution downcomer 22. The filter 21 is made of a non-magnetic material. Further, an annular electromagnet 2 is provided on the outer periphery of the intermediate member 23.
Reference numeral 4 denotes an annular permanent magnet at the bottom.

FIG. 7 shows the appearance of the filter 21.
The filter disk 21A is fixed to the upper part of the filter 21. As shown in FIG. 8, a DC power supply 27 is connected to the electromagnet 24 via a switch 26.

In the solution foreign matter removing device having the above structure, when the solution flows as shown by the arrow in FIG. 6 and foreign matter in the solution is caught by the filter 21 and the filter 21 is clogged, the solution Is stopped, the switch 26 of the electromagnet 24 is turned on, the foreign matter adhering to the filter 21 is separated from the surface of the filter 21 by the electromagnetic force of the electromagnet 24, and is attracted to the inner surface side of the intermediate member 23. Then, after a certain amount of time has passed, when the switch 26 is turned off,
The foreign material that has been drawn to the inner surface side of the intermediate member 23 falls to the bottom of the intermediate member 23 by its own weight because the intermediate member 23 has high magnetic permeability. Then, the foreign matter that has fallen to the bottom of the intermediate member 23 is attracted to the permanent magnet 25. In this way, the foreign matter adhering to the filter 21 is removed,
The clogging of the filter 21 can be prevented.

It should be noted that the pump 21 is not stopped when the filter 21 is clogged, and the electromagnet 24
May be turned on.

[0024]

[Effects of the Invention] As described above, according to the present invention,
Since the filter is unlikely to be clogged, maintenance work such as cleaning and replacement of the filter can be minimized.

In addition, the frequency of disassembly of the absorption chiller / heater is reduced, which is very convenient.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a solution foreign matter removing apparatus according to a first embodiment of the present invention.

FIG. 2 is a diagram showing a part A of FIG. 1;

FIG. 3 is a diagram showing a modification of FIG. 2;

FIG. 4 is a diagram showing another modification of FIG. 2;

FIG. 5 is an enlarged view of a portion C in FIG. 4;

FIG. 6 is a schematic structural view of a solution foreign matter removing apparatus according to a second embodiment of the present invention.

FIG. 7 is a perspective view of the filter shown in FIG.

8 is a drive circuit diagram of the electromagnet shown in FIG.

FIG. 9 is a view showing a conventional solution foreign matter removing device installed in an absorption chiller / heater.

FIG. 10 is a view showing an example of a conventional solution foreign matter removing apparatus.

FIG. 11 is a perspective view of the filter shown in FIG.

FIG. 12 is a view showing another example of a conventional solution foreign matter removing apparatus.

[Explanation of symbols]

 10,20 Solution outlet 11,21 Filter 12,22 Solution downcomer 13,23 Intermediate member 14 Storage tank 15 Partition plate 16 Foreign matter 17,18 Magnet 24 Electromagnet 25 Permanent magnet 26 Switch 27 DC power supply

Claims (2)

(57) [Scope of request for utility model registration] A filter is provided in the middle of a solution circulation flow path in an absorption chiller / heater, and a filter for removing foreign matter in the solution by the filter is provided. And a storage tank for discharging the solution from the upper part is provided upstream of the filter, and a magnet is provided at least at the bottom of the storage tank . 2. A solution foreign matter removing apparatus for removing foreign matter in a solution by providing a filter in the middle of a solution circulation flow path in an absorption chiller / heater, wherein the filter has a cylindrical shape and an outer periphery of the filter. A solution foreign matter removing device in an absorption chiller / heater, wherein an electromagnet is arranged so as to face the surface.