JPH07214046A - Deoxygenating device - Google Patents

Abstract

PURPOSE:To provide an inexpensive deoxygenating device by eliminating the need for the solenoid valve, etc., of a water feed line. CONSTITUTION:This deoxygenating device consists of a water feed line 4 between a raw water supply part 1 and a treated water delivery part 2, a pressure reducing valve 5, a module 6 for removing the dissolved gas in the raw water and a water-sealed pump 9 connected to the module 6. Further, a leak line 16 is formed at the specified position of the line 4 to maintain the function of the valve 5 when the supply of treated water is stopped.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to cooling and heating equipment,
The present invention relates to improvement of a deoxidizing device applied to a water supply line for buildings, condominiums, etc.

[0002]

2. Description of the Related Art As is well known, a water supply line for cooling and heating equipment such as a boiler, a water heater or a cooler is equipped with a deoxidizer for the purpose of preventing internal corrosion of these equipment. Further, in recent years, a deoxidizing device has come to be used also as a measure for preventing red water in water supply and distribution pipes in buildings such as buildings and condominiums.

In the deoxidizing apparatus, a deoxidizing module is connected in a water supply line to equipment to be used, and raw water (tap water, well water, other industrial water) is passed through the deoxidizing module. In the water passing process, the inside of the deoxygenation module is evacuated to remove the dissolved gas in the raw water by degassing.

As shown in FIG. 2, this type of deoxidizer has a pressure reducing valve 24, a solenoid valve 25 and a deoxidizing module 26 in a water supply line 23 between a raw water supply section 21 and a treated water tank 22. The treated water tank 22 is provided with a water level control device 27 composed of a plurality of electrode rods, and sends a water level signal to a controller 29 via a line 28. The opening / closing of the solenoid valve 25 is controlled. The decompression valve 24 prevents the supply of water pressure above a certain level to the deoxygenation module 26, and prevents the deoxidation module 26 from being damaged. In the figure, 30 is a treated water supply line connected to the treated water tank 22.

The deoxidizing module 26 includes, for example, a large number of hollow fiber membranes. Raw water is passed inside the hollow fiber membranes, the outside is evacuated to a vacuum, and water passes through the hollow fiber membranes. A hollow fiber membrane deoxygenation module that removes dissolved oxygen in raw water. A water-sealed vacuum pump 31 is provided as means for vacuum degassing the inside of the deoxygenation module 26. This water-sealed vacuum pump 31 and deoxidizing module 2
A vacuum deaeration line 32 is connected to the No. 6 and a solenoid valve 33 is inserted in the middle. This water-sealed vacuum pump 31 is provided with a water-sealed tank 34. The water-sealed tank 34 and the water-sealed vacuum pump 31 are connected by a water-sealing supply line 35, and a circulation pump 36 is inserted in the middle. Then, the used sealed water flows into the sealed water tank 34 through the return path 37. Reference numeral 38 in the figure is a sealing water supply passage.

The deoxidizing apparatus having the above-mentioned structure is operated by the signal from the water level control device 27 provided in the treated water tank 22.
Through the controller 29, opening / closing of the solenoid valves 25 and 33, and operation / stop of the water-sealed vacuum pump 31 and the circulation pump 36 are controlled. However, recently, due to various circumstances, a less expensive deoxidizing device than a conventional deoxidizing device is required.

[0007]

SUMMARY OF THE INVENTION The present invention has been made based on the requirements of the low-priced oxygen scavenging apparatus described above,
It is an object of the present invention to provide a low-priced deoxidizer using a cheap control device by eliminating the water level control device composed of an expensive electrode rod and the solenoid valve of the water supply line.

[0008]

That is, the present invention provides a decompression module for removing a dissolved gas in a raw water from a pressure reducing valve in a water supply line between a raw water supply section and a treated water supply section. In the deoxygenation device including a water-sealed vacuum pump connected to the module, a leak line is provided at a predetermined position of the water supply line in order to maintain the function of the pressure reducing valve when the supply of the treated water is stopped.

[0009]

According to the above construction, when the treated water supply is stopped, a proper amount of water flows out from the leak line connected to the water supply line, so that the function of the pressure reducing valve can be maintained.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings. FIG. 1 is an explanatory diagram showing the configuration of a deoxidizer according to the present invention. In this deoxygenation apparatus, a pressure reducing valve 5, a deoxygenation module 6, a flow switch 7, and the above treatment are provided in a water supply line 4 between a raw water supply unit 1 and a treated water tank 3 having a treated water supply and distribution unit 2. Water tank 3
A ball tap 8 for controlling the water level inside is connected.
The decompression valve 5 prevents the supply of water pressure above a certain level to the deoxidizing module 6, and prevents the deoxidizing module 6 from being damaged. The deoxygenation module 6 includes, for example, a large number of hollow fiber membranes, raw water is passed inside the hollow fiber membranes, the outside is evacuated to a vacuum, and water is passed through the hollow fiber membranes. It is a hollow fiber membrane deoxygenation module that removes dissolved oxygen. A water-sealed vacuum pump 9 is provided as a means for vacuum degassing the inside of the deoxygenation module 6. The water-sealed vacuum pump 9 and the deoxidizing module 6 are connected by a vacuum deaeration line 10, and a solenoid valve 11 is inserted in the middle. The water-sealed vacuum pump 9 is equipped with a water-sealed tank 12, and the water-sealed tank 12 and the water-sealed vacuum pump 9 are connected by a water-sealing supply line 13, and a circulation pump 14 is inserted in the middle. However, the used sealed water is allowed to flow into the sealed water tank 12 through the return passage 15. The flow switch 7 is inserted in the outlet side of the deoxidizing module 6, detects the flowing water supplied from the water supply line 4 into the deoxidizing module 6, outputs an electric signal, and responds to this electric signal. Then, the water-sealed vacuum pump 9, the solenoid valve 11, and the circulation pump 14 are operated via a controller (not shown).

The leak line 16 according to the present invention is shown in FIG.
As shown in FIG. 5, the water supply line 4 is connected between the pressure reducing valve 5 and the deoxygenation module 6, the tip portion is connected to the water sealing tank 12, and a predetermined orifice 17 is inserted in the middle. . This orifice 17 is the treated water tank 3
When the ball tap 8 is operated and the supply of the treated water is stopped, an appropriate amount of water that can maintain the function of the pressure reducing valve 5 is flowed. Then, an overflow line 18 for sealing water is provided at a predetermined position of the sealing water tank 12 to discharge excess water out of the system. The temperature of the sealing water in the sealing water tank 12 can be lowered by draining this excess water. Therefore, it is possible to prevent the performance of the water-sealed vacuum pump 9 from deteriorating due to the rise in the temperature of the water-sealing water.

Although the leak line 16 is connected to the upstream water supply line 4 of the deoxidizing module 6 in the above-mentioned embodiment,
This may be connected to the downstream side, and the driving and stopping of the water-sealed vacuum pump 9 may be controlled by lowering the degree of vacuum of the vacuum degassing line 10, and the flow may be controlled by a flow sensor, a flow meter, or the like. Can be detected and linked. Furthermore, it is also possible to drive the water-sealed vacuum pump 9 by recognizing the flow due to a decrease in the differential pressure across the deoxidizing module 6 and a decrease in the water pressure after the deoxidizing module 6.

[0013]

As described above, according to the present invention, the leak line is connected to the predetermined position of the water supply line so as to maintain the function of the pressure reducing valve when the supply of the treated water is stopped. It is possible to provide an inexpensive deoxygenation device without requiring an expensive water level control device for a water tank or a solenoid valve for a water supply line.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a deoxidizer according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram showing a configuration of a conventional deoxidizer.

[Explanation of symbols]

 1 Raw Water Supply Section 2 Treated Water Distribution Section 4 Water Supply Line 5 Pressure Reducing Valve 6 Deoxygenation Module 9 Water Sealed Vacuum Pump 16 Leak Line

Claims (1)

[Claims] 1. A pressure reducing valve 5 and a deoxygenation module 6 for removing dissolved gas in raw water, and a deoxidation module 6 connected to a water supply line 4 between a raw water supply unit 1 and a treated water distribution unit 2. In the deoxygenation device including the water-sealed vacuum pump 9, the leak line 1 is provided at a predetermined position of the water supply line 4 in order to maintain the function of the pressure reducing valve 5 when the supply of the treated water is stopped.
A deoxidizer, which is provided with 6.