KR200202728Y1 - An oxygen concentrator for an aquarium and live fish delivery tank - Google Patents

Abstract

Disclosed is a concentrated oxygen tank for tanks, which, in addition to constructing a pair of adsorption towers, has a means for obtaining a constant pressure and purity while doubling the amount of oxygen supplied and safely supplying more stable oxygen to fish and shellfish in the tank. It relates to a supply device.

The concentrated oxygen supply device for the tank of the present invention can increase the amount of dissolved oxygen in the live fish and shellfish tank and transportation system, so that the fish and shellfish can be safely stored or transported in a high density living state. The stable supply of concentrated oxygen prevents the loss of live fish and shellfish to prevent economic damage, and in particular, it is possible to reduce the operating time of the device by storing oxygen with a storage tank. Oxygen supply is possible.

Description

An oxygen concentrator for an aquarium and live fish delivery tank

The present invention relates to a concentrated oxygen supply device for supplying concentrated oxygen and compressed air at a predetermined ratio to the desired oxygen purity, and in particular, having a pair of adsorption towers and having means for obtaining constant pressure and purity. The present invention relates to a concentrated oxygen supply apparatus for a tank, which doubles the production of oxygen supplied by the present invention and safely supplies more stable oxygen to fish and shellfish of the tank.

In general, the oxygen concentrator is a device for separating and concentrating oxygen in the atmosphere, and is currently concentrating oxygen by using general electric power of AC. Therefore, it is usually used for home use, the operation principle of such an oxygen concentrator utilizes the property that an adsorbent called zeolite adsorbs predetermined gas molecules. Nitrogen, which occupies about 80% of the atmosphere, is better adsorbed to the zeolite than oxygen, so when the air is introduced into the adsorption bed filled with the adsorbent, the nitrogen is adsorbed, and the nitrogen-reduced gas is discharged to the outlet of the upper bed. As a result, oxygen is obtained as the main component of the emitted gas.

The above nitrogen adsorption process is a process in which only nitrogen is adsorbed by passing a pressurized gas through a predetermined adsorbent and the remaining gas is passed to separate oxygen from the air. Should be removed (removed) from it to restore its original performance. In this process, some of the gas passing through the adsorbent gas adsorbed by the adsorbent is recycled and desorbed at low pressure to restore the adsorbent to recover the adsorbent capacity.

Conventional known oxygen concentrators are oxygen concentrators having a simple structure and performance that do not take into account changes in the outflow amount. As such an oxygen concentrating device, there is a gas generating device disclosed in Japanese Patent Laid-Open No. 6-91927. The structure of the oxygen concentrator is divided into four broadly, which is outlined as follows.

The apparatus is composed of an adsorption section for separating nitrogen and oxygen from air, an operation section related to air compression, storage and outflow, a control unit for opening and closing a valve, and a frame section for combining them. The core of this gas generator is to repeat the process of adsorbing the gas by supplying the mixed gas to the adsorption tank filled with the adsorbent as described in the publication, and desorbing the gas adsorbed from the adsorbent from the adsorbent. Oxygen) is obtained at a constant concentration, in which part of the gas required in the adsorption tank is refluxed and used for the desorption process.

In such a gas generator, only oxygen concentration proceeds, so the valve opening and closing cycle operates constantly regardless of the production flow rate. Therefore, if there is a change in the flow rate for the supply of concentrated oxygen, the oxygen purity is not uniform, and the oxygen supply is disproportionately discharged due to the user's arbitrary operation, so that the whole process of the concentration process and oxygen supply does not operate smoothly. I had a problem. In particular, the adsorption tank (bed) that adsorbs nitrogen in the air in this device is composed of a single cylinder, and the adsorption performance is deteriorated, and there is a closed end to increase the volume to overcome this.

Meanwhile, an apparatus for supplying air to an aquarium is also used. Conventionally, an oxygen tank is provided in an aquarium and a foaming machine is installed therein to supply air in an emergency such as a power failure through a solenoid valve. On the other hand, an oxygen generating agent and a carbon dioxide gas absorbing agent were enclosed in a transport bag and used when transporting live fish and shellfish. However, these oxygen supply devices are limited in capacity and can be used temporarily, but they cannot be used for a long time, and live fish and shellfish often die due to the inability to stably supply oxygen to oxygen-sensitive fish and shellfish. . Therefore, there have been huge financial damages to live fish and shellfish transportation and suppliers and aquariums.

Accordingly, an object of the present invention is to solve the above-mentioned drawbacks, and to provide a pair of adsorption towers, as well as to increase the amount of oxygen supplied by the means to obtain a constant pressure and purity while the tank The present invention provides a concentrated oxygen supply device for tanks that can safely supply more stable oxygen to fish and shellfish.

1 is a block diagram of a concentrated oxygen supply device for a water tank according to the present invention.

* Code descriptions for the main parts of the drawings

10 air compressor 11 suction filter

12: silencer 20a, 20b: adsorption tower

21: pressure equalization orifice 30: storage tank

31: pressure gauge 32: pressure switch

40: control unit 50: auxiliary tank

51: shuttle valve 52: constant pressure valve

53: orifice 60: supply valve

70: pressure regulator 71: needle valve

80: water tank 81: foaming machine

90: discharge valve

A concentrated oxygen supply apparatus for a water tank according to the present invention for achieving the above object, the apparatus for sucking and separating and supplying air in the air, the air compressor for compressing the air in the air; A supply valve for intermittently supplying compressed air from the air compressor; An adsorption tower for generating concentrated oxygen by adsorbing and separating nitrogen from the compressed air; Auxiliary tank for temporarily storing the concentrated oxygen generated in the adsorption tower; A storage tank receiving concentrated oxygen from the auxiliary tank and storing the same at a predetermined pressure and sending the same when necessary; A pressure switch for detecting an oxygen pressure in the storage tank; And a control unit which receives the signal detected from the pressure switch and controls the air compressor and the valves to generate and supply oxygen when the oxygen storage amount in the storage tank is insufficient.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram showing a concentrated oxygen supply apparatus for a water tank according to the present invention. In particular, in this figure, the air flow is indicated by a solid line, the sensor signal by a dashed line, and the control signal by a dotted line in order to make the working relationship of the components easier to understand.

The concentrated oxygen supply device separates oxygen by adsorbing nitrogen from the compressed air sent from the air compressor 10 and the air compressor 10, which is filled with an adsorbent therein, and the compressed air sent from the air compressor 10. Adsorption tower (20a, 20b) and the storage tank 30 to store the oxygen output from the adsorption tower (20a, 20b) and to convert to a constant pressure and supply to the required target, and all the components to control the desired output It is provided with a control unit 40 for controlling so as to obtain. In addition, in order to more stably perform the nitrogen desorption process of the adsorption tower (20a, 20b), the apparatus is provided with an auxiliary tank (50) between the adsorption tower (20a, 20b) and the storage tank (30). By providing the auxiliary tank 50, not only the pressurization time is shortened but also the production efficiency is increased. Looking at the above components in more detail as follows.

As shown, dust in the air is removed and supplied to the air compressor 10 through the suction filter 11. Then, compressed air is introduced into the adsorption tower 20 via the supply valve 60. The supply valve 60 supplies the air of the air compressor 10 to the first adsorption tower 20a in the first position 61, and the compressed air of the air compressor 10 in the second position 62. It serves to switch to supply to the adsorption tower (20b) and to operate while alternating the two adsorption tower consisting of two. Nitrogen is adsorbed in the adsorption tower 20a, 20b to output oxygen, and the output oxygen is supplied to the auxiliary tank 50 to be temporarily stored. In particular, a shuttle valve 51 is provided between the auxiliary tank 50 and the first and second adsorption towers 20a and 20b. The shuttle valve 51 has two inlets, so that high-pressure gas is introduced. Is opened to switch the oxygen movement from the first and second adsorption towers 20a and 20b to the auxiliary tank 50, and to prevent the oxygen stored in the auxiliary tank 50 from flowing back to the adsorption tower. On the other hand, a pressure equalizing orifice 21 is provided on the lines for transferring oxygen from the pair of first and second adsorption towers 20a and 20b to the auxiliary tank 50, so that a part of oxygen sent to the auxiliary tank 50 is provided. Is sent to the other adsorption tower to be used to cleanse and activate the adsorbent zeolite.

A positive pressure valve 52 and an orifice 53 are interposed between the auxiliary tank 50 and the storage tank 30, and the positive pressure valve 52 maintains the pressure of the auxiliary tank 50 at a set value so that the adsorption tower 20a, Oxygen adsorption is possible within 20b), while oxygen is moved to the storage tank 30 when the pressure exceeds a set value. In addition, the orifice 53 functions to control the pressure and flow rate of the concentrated oxygen released through the positive pressure valve 52 and send it to the storage tank 30. In this way, the system is equipped with a positive pressure valve 52 between the auxiliary tank 50 and the storage tank 30 to maintain the pressure of the adsorption tower (20a, 20b) suitable for oxygen generation, while the concentrated oxygen produced therefrom To temporarily store in the auxiliary tank (50).

Above the positive pressure valve 52 and the orifice 53, the storage tank 30 for storing the concentrated oxygen is located, the storage tank 30 is provided with a pressure gauge 31 and the pressure switch (32). The pressure gauge 31 detects the pressure change in the storage tank 30 from time to time and informs the user, and the pressure switch 32 detects the pressure change in the storage tank 30 and notifies the controller 40. Accordingly, the controller 40 controls the air flow of the first and second adsorption towers 20a and 20b by repeatedly controlling the operation and stop of the air compressor 10 and the internal valves to produce concentrated oxygen. Meanwhile, the oxygen stored under pressure in the storage tank 30 is supplied to the water tank 80 through the pressure regulator 70 and the needle valve 71. At this time, the pressure regulator 70 is the high pressure oxygen in the storage tank 30. Lower to a lower pressure to form a constant discharge pressure, the amount of oxygen supplied to the water tank (80) is supplied by adjusting the supply using the needle valve (71). The oxygen thus supplied is finally provided to the fish and shellfish in the tank through the foamer 81 fixed in the tank 80. Therefore, the fish and shellfish will be able to safely operate in the tank 80 is provided with fresh air.

In addition, the device is equipped with a silencer 12 on the discharge side in order to reduce the noise generated by the pressure difference with the surrounding atmosphere when discharging nitrogen generated in the concentration of oxygen in the adsorption tower (20a, 20b) have. Since most of the gaseous components discharged from the muffler 12 are nitrogen, the oxygen concentration generated in the adsorption towers 20a and 20b is reduced when the gas components are re-introduced into the adsorption towers 20a and 20b. Therefore, the silencer 12 is separated from the intake filter 11 of the air compressor 10 and spaced apart to allow fresh air to be sucked into the air compressor 10. The apparatus also provides a discharge valve 90 for discharging the high pressure oxygen inside the adsorption towers 20a and 20b to facilitate the restart of the adsorption tower.

From now on, the concentrated oxygen supply device for the tank of the present invention will be described in detail for the process of producing and supplying oxygen by applying to the aquarium for live fish and shellfish.

When the device is operated, the controller 40 reads the oxygen pressure therein from the pressure switch 32 installed in the storage tank 30 to determine whether to produce oxygen. At this time, if it is determined that the oxygen in the storage tank 30 is insufficient, the control unit 40 sends a drive signal to the air compressor (10). Then, the air compressor 10 operates to generate compressed air with the air filtered through the suction filter 11. The compressed air is sent to the first adsorption tower 20a, where nitrogen is adsorbed by zeolite as an adsorbent, and oxygen is separated and concentrated. At this time, the positive pressure valve 52 serves to maintain the pressure of the first adsorption tower (20a) to allow adsorption. As a result, the inside of the first adsorption tower 20a increases the pressure to the set pressure by the introduced air, and the positive pressure valve 52 is opened, thereby separating and concentrating the secondary tank 50 from the first adsorption tower 20a. Concentrated oxygen is transferred. At this time, a part of the oxygen sent to the auxiliary tank 50 is introduced into the second adsorption tower 20b through the pressure equalization orifice 21 to clean and activate the zeolite of the second adsorption tower 20b.

As such, when the oxygen moves and the pressure inside the first adsorption tower 20a drops, the positive pressure valve 52 is closed again. Here, the operating cycle of the positive pressure valve 52 is the same as the adsorption, washing cycle of the adsorption tower (20a, 20b). Therefore, this apparatus is provided with the auxiliary tank 50 and the orifice 53 in order to slow the operation cycle of the positive pressure valve 52. As shown in FIG. In particular, since there is an auxiliary tank 50 between the positive pressure valve 52 and the adsorption tower (20a, 20b), the pressure change is small, so that the operating cycle of the positive pressure valve 52 is long, the valve life is extended.

As described above, the oxygen is pressurized to a constant pressure by the positive pressure valve 52 and the oxygen stored in the auxiliary tank 50 moves to the storage tank 30 via the orifice 53. In this way, the concentrated oxygen stored in the storage tank 30 is converted into a constant low pressure concentrated oxygen while the high pressure concentrated oxygen passes through the pressure regulator 70. The low pressure concentrated oxygen thus processed is supplied into the water tank 80 through the foamer 81 via the needle valve 71. Of course, the amount of oxygen supplied in the water tank 80 is adjusted by operating the needle valve (71). The control unit 40 continuously receives a signal from the pressure switch 32 installed in the storage tank 30 when supplying such oxygen, and controls the supply compressor 10 or various valves. The pressure in the storage tank 30 When this certain value is reached, a stop signal is sent to stop the components. Therefore, a predetermined amount of concentrated oxygen is always stored in the storage tank 30. The oxygen produced and stored under pressure in the storage tank 30 is supplied to the water tank 80 through the supply line described above when necessary.

As described above, the concentrated oxygen supply device for a water tank of the present invention doubles the amount of oxygen supplied by constituting a pair of adsorption towers and has means for obtaining a constant pressure and purity, while equipping a discharge valve. It is possible to safely supply more stable oxygen to the fish and shellfish of the tank because it restarts smoothly. Accordingly, it is possible to increase the amount of dissolved oxygen in live fish and shellfish tanks and transportation systems, there is an advantage that can be stored or transported fish and shellfish in a living state of high density. By stably supplying the concentrated oxygen in this way, it is possible to prevent the loss of live fish and shellfish, thereby preventing economic damage. In particular, it is possible to reduce the operating time of the device by storing oxygen with a storage tank, while also providing continuous oxygen supply.

Claims (7)

In the device for sucking and separating and supplying air in the atmosphere, An air compressor for compressing air in the atmosphere; A supply valve for intermittently supplying compressed air from the air compressor; An adsorption tower for generating concentrated oxygen by adsorbing and separating nitrogen from the compressed air; Auxiliary tank for temporarily storing the concentrated oxygen generated in the adsorption tower; A storage tank receiving concentrated oxygen from the auxiliary tank and storing the same at a predetermined pressure and sending the same when necessary; A pressure switch for detecting an oxygen pressure in the storage tank; And And a control unit configured to generate and supply oxygen by driving the air compressor and valves in response to a signal detected by the pressure switch, when the oxygen storage amount in the storage tank is insufficient. The apparatus of claim 1, wherein the adsorption tower comprises a pair of first and second adsorption towers installed in parallel between the air compressor and the auxiliary tank. According to claim 1 or 2, wherein the supply valve is a first position for sending compressed air from the air compressor to the first adsorption tower, and a second position for sending compressed air from the air compressor to the second adsorption tower A concentrated oxygen supply device for a water tank, characterized in that it has a. The concentrated oxygen supply apparatus for a water tank according to claim 2, wherein the first and second adsorption towers are provided with a pressure equalizing orifice capable of sending a small amount of concentrated oxygen to clean the contaminated adsorbent therein. . According to claim 1 or 2, wherein the front end of the auxiliary tank is provided with a shuttle valve connected to the first adsorption tower and the second adsorption tower to transfer the concentrated oxygen generated by opening the high pressure side to the auxiliary tank, The rear end further comprises a hydrostatic pressure valve for maintaining the pressure of the adsorption tower and an orifice for constant supply of concentrated oxygen to the storage tank. According to claim 1, wherein the rear end of the storage tank is further provided with a pressure regulator for converting output to a constant low pressure suitable for the use of high pressure concentrated oxygen, and a needle valve for controlling the amount of concentrated oxygen supplied Tank for concentrated oxygen supply. The concentrated oxygen supply apparatus for a water tank according to claim 6, further comprising a foamer for supplying the concentrated oxygen outputted through the needle valve to a tank for live fish and shellfish.