JPH0226376A - Exhaust system - Google Patents

Abstract

PURPOSE:To prevent adhesion of dust and impurity in a vertical pipe, accompanied with up/down movement of a needle, by fitting the needle in the vertical pipe, up and down movably, and providing a clearance for exhausting gas. CONSTITUTION:A vertical pipe 3 is equipped in a gas-liquid separation device 1, and a needle 4 is movably fitted in the vertical pipe 3 up and down. A clearance 5 is formed for exhausting gas in the gas-liquid separation device, between the inner circumference of this vertical pipe 3 and the needle 4.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an exhaust device that can smoothly exhaust a certain amount of gas under a certain pressure and that does not cause clogging or sticking of dust in the exhaust part. It is.

[Prior Art 1 Conventionally, as an exhaust device for connecting the gas-liquid # to a device (pressurized container) and exhausting the gas in the gas-liquid separation device, there has been an exhaust device using a needle valve as shown in Fig. 3, Alternatively, an exhaust system using a 70 valve was used.

[Problems to be Solved by the Invention] However, in the case of using a needle valve as shown in Fig. 3, if gas-liquid mixed water or gas-liquid mixed with impurities passes through the needle valve, dirt clogging may occur. If left as is, impurities in the liquid often entered the gap in the valve and became stuck. In particular, conventional needle valves have a taper 4a' on the needle 4'' to enable delicate opening v4W1, so the clearance 5' is very small, and as a result, sticking and clogging are common.By the way, The clearance 5' in the needle valve shown in FIG. 3 was only about 30 microns, and was often clogged with dirt or stuck.

In addition, in the float valve type, when the liquid level falls below a certain level, the 70-t lowers and gas is discharged, and when the liquid level rises above a certain level, the valve closes due to the buoyancy of Larot. In this case too, the valve part was often stuck with impurities in the liquid, so gas could not be exhausted even if the liquid level fell.

Due to the structure of the exhaust devices shown in these conventional examples, it is difficult to prevent sticking and clogging with dirt, and maintenance is also difficult.

The present invention was invented in view of the above-mentioned conventional problems, and its purpose is to provide an exhaust system that is inexpensive, has good exhaust performance, does not have valves stuck or clogged with dust, and does not require maintenance. It is on offer.

[Means for Solving Problem n] The exhaust device of the present invention is connected to the gas-liquid separator 1 and exhausts the gas in the gas-liquid separator 1 to II! An exhaust system 2 that
A vertical pipe 3 is attached to the gas-liquid separator 1, and a needle 4 is fit into the vertical pipe 3 so as to be able to move vertically, and the gas inside the gas-liquid separator 1 is exhausted between the inner circumference of the vertical pipe 3 and the needle 4. A certain clearance 5 is provided, and an upper plate 6 is provided above the needle 4, which can freely touch the upper opening edge of the vertical tube 3, and a downward spring force is applied to the needle 4. By employing such a configuration, the above-mentioned object of the present invention is achieved.

[Function] That is, in the present invention, the gas-liquid separation wave r! When the inside of the gas-liquid separator 11 is pressurized, the container body passes through the clearance 5 between the vertical pipe 3 and the needle 4 with force, pushing the needle 4 upward and exhausting the air. The needle 4 constantly vibrates up and down due to pressure fluctuations and vibrations, the pressure increase that occurs when liquid is discharged, and the spring force that tries to press the needle 4 downward, and the needle 4 vertically If! The needle 4 is cleaned by moving up and down within the needle 3 to prevent sticking and clogging. Furthermore, when the operation is stopped, the spring force and the weight of the needle 4 lower the needle 4 to its original state, and the needle 4 is cleaned at this time as well. It has become so.

[Examples] The present invention will be described in detail below based on examples shown in the accompanying drawings.

In FIG. 1, an exhaust system fa according to the present invention is installed in the upper part of the gas-liquid separator 1.
The exhaust system f12, indicated by 2, is basically composed of a vertical tube 3, a needle 4 movably fitted into the vertical tube 3, and a spring member 7 for pressing the needle 4 downward. The vertical pipe 3 is attached to the lower part of the casing 8 by vertically penetrating the cylindrical part 9 and fixed thereto, and the casing 8 is attached by penetrating the cylindrical part 9 to the upper part of the exhaust device 2 and being fixed thereto. Vertical pipe 3
In the embodiment, the inner periphery has a circular cross section, and a needle 4 is inserted between the inner surface of the vertical tube 3 and a needle 4 inserted into the vertical tube 3 so as to be able to move vertically. A certain clearance 5 is provided.

The upper part of the needle 4 is fixed to the center of the upper plate 6, and the upper plate 6 can freely come into contact with the upper opening edge of the II tube 3. The lower part of the lid 10 is screwed onto the upper part of the casing 8, and the spring material 7 is interposed between the protrusion 11 on the lower surface of the lid 10 and the protrusion 12 at the center of the upper surface of the upper plate 6. This is due to the downward spring force applied to the needle 4. *The side of the casing 8 is provided with an exhaust port 23 that communicates with the exhaust chamber 8a inside the casing 8. Reference numeral 13 and 14 in Figure 1 are O-rings to maintain airtightness.

By the way, in the above-mentioned exhaust device 2, the diameter of the needle 4 is as thin as about 0.5 mm, and the hole diameter of the vertical tube 3 is, for example, 0.75 mm, although it varies depending on various conditions.
If it is about the same level as the needle, the clearance 5 with the needle 4 is 0.
125 theory-, and if the needle 4 becomes clogged, the possibility of sticking will be greatly reduced. The length of the needle 4 is made long enough so that the needle 4 does not come out even if it is pushed up to the upper part of the casing 8.

The spring material 7 may be of any material as long as it works against the force pushing up the needle 4; for example, a compression coil spring can be considered, but if the spring constant (K) is too large, the needle 4 will not move up or down. Since the spring material 7 hardly contracts in response to changes in force (pressure fluctuations), the cleaning effect due to pressure fluctuations during operation cannot be expected to be very effective. On the other hand, if the spring constant is too small, the spring material 7 will be completely compressed by a small force, and the needle 4 will remain pushed upward, and since the needle 4 will not slide up and down, no cleaning effect can be expected during operation. . Therefore, the spring constant needs to be determined in consideration of the pressure inside the gas-liquid separation device 1, the displacement amount, the width of pressure fluctuation, the types of gas and liquid, and the like.

The gas-liquid separator 1 is, for example, a fine bubble generator attached to a bathtub-like W115 as in the embodiment shown in FIG.
It is installed in the middle of the pipe 17 of the ile.

An example in which air is used as the gas and water is used as the liquid will be described below. Piping 17 of fine bubble generator 16
One end serves as a water intake port 18, and the other end serves as a discharge port 19, and an intake pipe 20, a pump 21, and a gas-liquid separator 1 are arranged in this order from the water intake port 18ff1l. Reference numeral 22 in FIG. 2 indicates a motor for driving the pump 21.

Therefore, when the pump 21 is driven by the motor 22,
Water in the tank 15 is sucked through the water intake port 18 by the action of the pump 21, and when this water passes through the pipe 17, air from the intake pipe 20 is drawn into the pipe 17 and sucked, and the water mixed with air is pumped. 21 and is pressurized within the pump 21,
This pressurization causes air to be dissolved in the water. Then, the water in which air has been dissolved is sent to the discharge port 19 through the pipe 17 in a pressurized state, but on the way, the water is sent to the discharge port 19 through the gas-liquid separator r! 11, the gas-liquid separator 1 has the general function of absorbing water pulsation and shock pressure, and also dissolves air that was not completely dissolved by pressurization within the pump 21. At the same time, the excess air that remains undissolved and mixed in the water is floated to the upper part of the gas-liquid separator 1, thereby separating the excess air from the water. The air separated upward in this way is exhausted from the exhaust device 2. In this case, the inside of the gas-liquid separator 1 is in a pressurized state, and the air accumulated in the upper part passes from the suction port 3a at the lower end of the vertical tube 3 through the dark clearance 5 between the vertical tube 3 and the needle 4. It flows into the exhaust chamber 8a in the casing 8 and is exhausted from the exhaust port 12. Although some water may be mixed in at this time, the amount of water discharged is 1720 to 1/10 or less of the amount of water discharged by a conventional needle valve, which makes it possible to significantly reduce the amount of water discharged. The water in which the air that has passed through the one-way liquid separator 1!1 is dissolved is discharged from a nozzle provided at the discharge port 19 to the M2S. And the discharge port 19
When water with dissolved air is discharged into the tank 15 from the nozzle provided in the tank 15, the water with dissolved air goes from a pressurized state to a state where the pressure is released all at once. The air is precipitated, and fine bubbles are generated in the water in the tank 15 by the precipitated air. here,
When the bath 15 is a bathtub, the microbubbles act to wrap around the surface of the bather's body, making the perceived temperature 1 to 3°C lower than the actual temperature.
It has the effect of reducing the sudden rise in blood pressure during bathing, and it also has the effect of reducing the drop in body temperature after bathing, making it difficult for the bath to cool down. It also has a visual effect because it is dyed white.

Next, the operating state of the displacement fi2 in the present invention will be explained. That is, when the operation of the micro bubble generator 16 is stopped, the needle 4 is lowered by gravity and the spring force of the spring material 7, and the upper plate 6 is placed at the upper opening edge of the vertical tube 3.
It hits and stops. In this state, when the fine bubble generator 16 is operated as described above and excess gas is separated in the gas-liquid separator 1 and a pressurized state is created, the vertical pipe 3 is By forcefully passing through the clearance 5 between the needle 4 and the needle 4, the needle 4 is pushed upward and exhausted. At this time, needle 4
By sliding on the inner surface of the hole in the vertical pipe 3, it prevents sticking and adhesion of dirt and the like.

Also, during operation, the needle 4 constantly vibrates up and down due to small pressure fluctuations and vibrations, pressure increases that occur when liquid is discharged, and the force of the spring material 7 provided at the top of the needle 4 that tries to contract. Become.

By constantly sliding the needle 4 and the vertical tube 3 due to this vibration, there is an effect of preventing sticking and clogging with dirt as described above. Here, in order to slide well, it is necessary to balance the force of pushing up the needle 4 due to pressure and flow rate, the force of the needle 4 trying to go down due to the spring force of the spring material 7, and the force of the spring material 7 trying to return to its original state. It is necessary to match. Also, when the operation is stopped, the needle 4 is moved by the spring material 7.
It goes down due to the restoring force and gravity. At this time as well, the vertical pipe 3 will be cleaned. That is, cleaning is performed by moving the needle 4 up and down significantly at the start and end of operation, and during operation, cleaning is performed by vibrating the needle 4 little by little due to pressure fluctuations and the restoring force of the spring material 7.

It is.

[Effects of the Invention] In the present invention, as described above, a vertical tube is attached to a gas-liquid separation device, a needle is fitted into the vertical tube so as to be movable up and down, and a gas-liquid separation device is provided between the inner periphery of the vertical tube and the needle. A certain clearance is provided to exhaust the gas inside, and an upper plate is provided at the top of the needle that can freely touch the upper opening edge of the vertical tube, and a downward spring force is applied to the needle. Not only can the air be smoothly evacuated through the clearance between the tube and the needle, but the vertical movement of the needle cleans the inside of the vertical tube, making it difficult for dirt to become clogged or stuck by impurities. Furthermore, during operation, the needle vibrates little by little due to the force of the spring material, allowing the machine to be constantly cleaned while operating, and at the start and end of operation, the needle moves up and down significantly to avoid clogging and sticking. In this way, clogging and sticking of dirt can be prevented, making maintenance unnecessary.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of an embodiment of the present invention, FIG. 2 is a schematic explanatory view showing an example of use of the above exhaust system, and FIG. 3 is a sectional view of a conventional example, where 1 is a gas-liquid separation device. , 2 is an exhaust device, 3 is a vertical pipe, 4 is a needle, 5 is a clearance, and 6 is an upper plate. Agent Patent Attorney Ishi 1) Chief Shichiban compensation, ＼ 轢I! ! 1 All 1 procedural amendment (self-initiated August 26, 1988, Figure 3 1, case description 1988 Patent Application No. 177302 2゜Name of the invention 3゜4゜ Case of person who amends Lido aerobic device Relationship with Patent Applicant Address 1048 Kadoma, Kadoma City, Osaka Name (58
3) Toshio Miyoshi, Representative of Matsushita Electric Works Co., Ltd.

Claims (1)

[Claims] (1) An exhaust device that is connected to a gas-liquid separator and exhausts the gas in the gas-liquid separator, in which a vertical pipe is attached to the gas-liquid separator, a needle is fitted into the vertical pipe so as to be movable up and down, and the inner circumference of the vertical pipe is A certain clearance is provided between the needle and the gas-liquid separator to exhaust the gas in the gas-liquid separator, and an upper plate is provided at the top of the needle that can freely touch the upper opening edge of the vertical tube. An exhaust device characterized by applying a spring force.