KR200296832Y1 - A cleaning device for adsorbent material of oxygen concentrator for automobile - Google Patents

Abstract

The present invention utilizes high temperature exhaust gas heat emitted from the engine of a vehicle to adsorb nitrogen and moisture to zeolites used as an adsorbent of an automobile oxygen generator, thereby shortening the lifetime of the adsorbent and reducing the oxygen separation efficiency. The present invention relates to an adsorbent cleaning device for an oxygen generator for automobiles.

In particular, in the air purifier having the oxygen supply function of the automobile,

A suction unit configured to suck or compress indoor air to a predetermined vacuum through an air filter (not shown) through a vacuum pump (not shown) and deliver the indoor air to the adsorption bed; A nitrogen discharge part for discharging nitrogen adsorbed and discharged from the adsorption bed to the outside; Is connected to the suction unit and the nitrogen discharge unit, the nitrogen contained in the adsorbed nitrogen through the adsorbent (not shown) in the air through the compressed air delivered through the suction unit to obtain oxygen and at the same time adsorbed nitrogen An adsorption bed for discharging the gas to the nitrogen discharge unit; A flow rate adjusting tube which is connected to the adsorption bed and which receives a portion of oxygen obtained by the adsorption bed, heats it, and then transfers an appropriate amount to the adsorption bed to increase nitrogen desorption efficiency of the adsorption bed; A dry oxygen heating unit attached to an exhaust manifold, which is an automobile exhaust device, to heat the dried compressed air delivered through the flow rate adjusting pipe so as to perform heat exchange; An oxygen discharge part connected to the adsorption bed and configured to store and discharge oxygen transferred from the adsorption bed to the internal oxygen storage tank; A check valve connected between the oxygen discharge part and the pipe connecting the adsorption bed, for passing oxygen passing through the adsorption bed in one direction; It is connected between the inlet and the nitrogen outlet and the pipe connecting the adsorption bed, including a valve for supplying or discharging the compressed air appropriately by opening and closing according to the opposing intake and exhaust operation of the adsorption bed, Characterized in that configured.

Description

Adsorbent cleaning device for oxygen generator for automobiles {A cleaning device for adsorbent material of oxygen concentrator for automobile}

The present invention relates to an adsorbent cleaning device for an oxygen generator for automobiles, and more particularly, a high-temperature exhaust gas exhausting a portion of dry high-purity load oxygen produced by passing through a zeolite used as an adsorbent for an automobile oxygen generator from an automobile engine. By redrying with heat and injecting the high temperature dry oxygen re-dried like this into the adsorption bed, which is a desorption cycle, a washing device can be manufactured to utilize the high temperature exhaust gas heat emitted from the engine of a car. The present invention relates to an adsorbent cleaning device for an oxygen generator for automobiles, wherein nitrogen and moisture are adsorbed onto zeolites used as adsorbents for automobile oxygen generators to shorten the life of the adsorbent and reduce the oxygen separation efficiency.

In general, the oxygen supply method of a vehicle includes a pressure swing adsorption (PSA) method using an adsorbent such as zeolite, a method of separating oxygen using a gas separation membrane, and a pressure pump using a vacuum pump. The vacuum swing adsorption method, which is a method of making oxygen-enriched air by an adsorbent, is used.

Here, in the method using a compression swing adsorption, which is a PSA method, air is generally compressed to a pressure of about 2 to 4 atmospheres and supplied to the adsorption bed, and nitrogen adsorbed by the adsorbent installed in the adsorption bed is desorbed and discharged at atmospheric pressure. .

Adsorption of the adsorbent is essential in the process of adsorbing nitrogen by using such adsorbent to separate the oxygen.A general cleaning method is to adsorb the adsorbent using a method of injecting separated high purity dry oxygen in the reverse direction when desorbed. The method of desorption of the nitrogen is used.

However, in such a method using an air compressor, the moisture absorbed in the zeolite cannot be desorbed, and the oxygen separation efficiency decreases after a certain period of time and shortens the life of the zeolite.

In order to solve this problem, a dehumidifying agent such as alumina and an expensive dehumidifier are usually attached to remove moisture, but when considering application to automobiles, problems such as durability, weight, manufacturing cost increase, and power consumption increase occur.

In addition, 100% removal using a dehumidifier requires a very complex dehumidification process.

The present invention has been made in view of the conventional problems as described above, the object is to discharge a portion of dry high-purity load oxygen produced by passing through the zeolite used as an adsorbent of the automobile oxygen generator from the automobile engine A high temperature exhaust gas discharged from the engine of a car is produced by rebuilding the high temperature exhaust gas heat and injecting the high temperature dry oxygen thus reconstructed into the adsorption bed, which is a desorption cycle, to clean the adsorbent. Provides the adsorbent cleaning device for oxygen generators for automobiles by using nitrogen gas to adsorb nitrogen and moisture to zeolites used as adsorbents for automobile oxygen generators to shorten the lifetime of adsorbents and reduce the efficiency of oxygen separation. It is.

Specific means of the present invention for achieving the above object,

In the air purifier having the oxygen supply function of the vehicle,

A suction unit configured to suck or compress indoor air to a predetermined vacuum through an air filter (not shown) through a vacuum pump (not shown) and to deliver the indoor air to the adsorption bed;

A nitrogen discharge part for discharging nitrogen adsorbed and discharged from the adsorption bed to the outside;

Is connected to the suction unit and the nitrogen discharge unit, the nitrogen contained in the adsorbed nitrogen through the adsorbent (not shown) in the air through the compressed air delivered through the suction unit to obtain oxygen and at the same time adsorbed nitrogen An adsorption bed for discharging the gas to the nitrogen discharge unit;

A flow rate adjusting tube which is connected to the adsorption bed and which receives a portion of oxygen obtained by the adsorption bed, heats it, and then transfers an appropriate amount to the adsorption bed to increase nitrogen desorption efficiency of the adsorption bed;

A dry oxygen heating unit attached to an exhaust manifold, which is an automobile exhaust device, to heat the dried compressed air delivered through the flow rate adjusting pipe so as to perform heat exchange;

An oxygen discharge part connected to the adsorption bed and configured to store and discharge oxygen transferred from the adsorption bed to the internal oxygen storage tank;

A check valve connected between the oxygen discharge part and the pipe connecting the adsorption bed, for passing oxygen passing through the adsorption bed in one direction;

It is connected between the inlet and the nitrogen outlet and the pipe connecting the adsorption bed, including a valve for supplying or discharging the compressed air appropriately by opening and closing according to the opposing intake and exhaust operation of the adsorption bed, It is composed.

1 is a system diagram showing the configuration of the adsorbent cleaning device of the oxygen generator for automobiles according to the present invention.

<Description of the symbols for the main parts of the drawings>

10: suction part 12: nitrogen discharge part

14a, 14b: adsorption bed 16a, 16b: flow rate adjusting pipe

18: exhaust manifold 20: dry oxygen heating unit

22: oxygen storage tank 24: oxygen discharge portion

26a, 26b: check valve 28a, 28b, 28c, 28d: valve

30: thermal insulation material 32: negative ion generator

34: fragrance generator

Hereinafter, the configuration of the present invention in detail with reference to the drawings as follows.

1 is a system diagram showing the configuration of the adsorbent cleaning device of the oxygen generator for automobiles according to the present invention.

For reference, in describing the present invention, when it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof is omitted.

In addition, terms to be described below are terms defined in consideration of functions in the present invention, which may vary according to intentions or customs of users and operators.

Therefore, the definition should be made based on the contents throughout the specification.

Suction to suck or compress the indoor air to a certain degree of vacuum through an air filter (not shown) through a vacuum pump (not shown) as shown, to be delivered to the adsorption beds 14a, 14b. The part 10 and the nitrogen discharge part 12 which discharges nitrogen adsorbed-discharged from the said adsorption beds 14a and 14b to the outside are formed.

In addition, the suction unit 10 and the nitrogen discharge unit 12 adsorb nitrogen through the adsorbent (not shown) contained in the air through compressed air delivered through the suction unit 10 to obtain oxygen. Adsorption beds 14a and 14b are connected to each other so that the adsorbed nitrogen can be discharged to the nitrogen discharge unit 12 at the same time.

In addition, a portion of oxygen obtained by the adsorption beds 14a and 14b is received and heated to the adsorption beds 14a and 14b, and then an appropriate amount is again transferred to the adsorption beds 14a and 14b. Flow rate adjusting pipes 16a and 16b for increasing the nitrogen desorption efficiency of 14a and 14b, and exhaust manifolds 18, which are automobile exhaust systems, are provided to allow heat exchange. The dry oxygen heating unit 20 is connected to heat the dried compressed air passing through the 16b.

In addition, the adsorptive beds 14a and 14b include an oxygen discharge part 24 for storing and discharging oxygen transferred from the adsorptive beds 14a and 14b to the internal oxygen storage tank 22. A check valve 26a connected between the oxygen discharge portion 24 and the pipe connecting the adsorption beds 14a and 14b to pass oxygen passing through the adsorption beds 14a and 14b in one direction. ), 26b are provided, and the suction bed 14a, 14b of the suction section 10 and the nitrogen discharge section 12 and the pipe connecting the adsorption beds 14a, 14b. The valves 28a, 28b, 28c, and 28d which open and close according to opposing intake and exhaust operation and supply or discharge compressed air appropriately are connected.

On the other hand, a heat insulating material 30 is provided on the outer surface of the pipe connecting the flow rate adjusting pipes 16a, 16b and the dry oxygen heating part 20, and the oxygen discharge part 24 passes through this place. The negative ion generator 32 and the scent generator 34 capable of supplying a high concentration of oxygen to the vehicle interior by selectively passing the oxygen supplied into the room are connected.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

The operation of the air purifier having the present oxygen supply function as described above is as follows.

That is, in the case of the two beds as shown in the drawing is operated in a vacuum and a suction cycle as follows, wherein the two adsorption beds (14a, 14b) are to operate opposite to each other.

This use of two beds is intended for continuous production and can be extended to a multi-bed system, allowing high purity dry oxygen to enter the opposite adsorption beds 14a, 14b via a bypass tube.

For a more detailed description, an example of vacuum swing adsorption is described.

First, the adsorption bed 14a is in a discharged state, and the adsorption bed 14b is described as assuming a suction state as follows.

First, when the valves 28a and 28c are opened and the valves 28b and 28d are closed, the adsorption bed 14a is in a vacuum state, and nitrogen adsorbed to the adsorbent in the adsorption bed 14b is discharged. 12), and the appropriate amount of oxygen separated from the adsorption bed 14b is heated while passing through the dry oxygen heating unit 20 connected to the vehicle exhaust manifold 18 so as to take heat exchange.

In addition, the heated dry oxygen is introduced into the adsorption bed 14a through a pipe closed with the thermal insulation material 30 to assist nitrogen desorption, and oxygen that does not pass through the dry oxygen heating unit 20 is indoors. Supplied.

On the other hand, the adsorption bed 14b located on the other side passes oxygen in the air flowing through the dehumidifying agent of the adsorption bed 14a through the check valve 10 through an oxygen pump (not shown) attached to the outside to store oxygen. After being delivered to the tank 22, it selectively passes through the anion generator 32 or the scent generator 34 to supply a high concentration of oxygen to the room.

For reference, in the data experimented with the vacuum swing adsorption system, the conditions were 70% humidity, 30 degrees temperature, and the vacuum pressure of the vehicle exhaust manifold 18 was 260 mmbar or lower, so the vacuum degree was 260 mmbar. 14a) and 14b were 2 cm in length and 2.5 cm in inner diameter, respectively.

The adsorbent was packed with 56 grams of Oxib7 zeolite per bed and under the same conditions one system was heated and the other system was unheated.

Only simple filters and no dehumidifiers were used to quickly check the results in the suction stage.

The initial oxygen purity of the two systems was the same at 2.5% of the flow rate of 41%, and after 200 hours of continuous operation, the non-heating system showed a sharp drop in oxygen concentration.

After 300 hours of continuous operation, the oxygen concentration in the heating system was 37.5%, whereas the oxygen concentration in the unheated system was found to be 23.5%.

As a result, the heating cleaning method was found to be much better than the non-heating cleaning method.

For reference, the present invention may be variously modified and may take various forms, but the detailed description of the present invention has been described only with respect to specific embodiments thereof.

Therefore, it is to be understood that this invention is not to be limited to the specific forms referred to in the description, but rather includes all modifications, equivalents, and substitutions within the spirit and scope of the invention as defined by the appended claims. It must be understood.

In other words, if you want to use the oxygen generator attached to the air purifier and air conditioner to use a separate heating system such as a heater that can heat the dry oxygen heating unit because it can achieve the same operation as the present invention.

As described above, according to the present invention, a part of dry high purity load oxygen produced by passing through a zeolite used as an adsorbent of an automobile oxygen generator is re-dried by high temperature exhaust gas heat discharged from an automobile engine, and thus re-dried high temperature Zeolite is used as an adsorbent for automobile oxygen generator by utilizing the high temperature exhaust gas exhausted from the engine of a car by injecting dry oxygen into the adsorption bed, which is a desorption cycle, to clean the adsorbent. Nitrogen and moisture are adsorbed on the back to shorten the lifetime of the adsorbent and to minimize the oxygen separation efficiency.

Claims (3)

In the air purifier having the oxygen supply function of the vehicle, Suction unit 10 for sucking or compressing indoor air through a vacuum pump (not shown) through an air filter (not shown) to a predetermined degree of vacuum to be delivered to the adsorption beds 14a and 14b. Wow; A nitrogen discharge unit 12 for discharging nitrogen adsorbed and discharged from the adsorptive beds 14a and 14b to the outside; Is connected to the suction unit 10 and the nitrogen discharge unit 12, the oxygen contained in the air by the adsorbent (not shown) in the adsorbed nitrogen through the compressed air delivered through the suction unit 10 oxygen (not shown) Adsorption beds (14a) and (14b) to allow to obtain a while at the same time to discharge the adsorbed nitrogen to the nitrogen discharge portion (12); It is connected to the adsorption beds 14a and 14b, but receives a portion of oxygen obtained by the adsorption beds 14a and 14b, heats it, and then transfers an appropriate amount to the adsorption beds 14a and 14b. Flow rate adjusting tubes 16a and 16b to increase the nitrogen desorption efficiency of the adsorptive beds 14a and 14b; Dry oxygen heating unit 20 attached to the exhaust manifold 18, which is an automobile exhaust system, to heat the dried compressed air passing through the flow rate adjusting pipes 16a and 16b so as to perform heat exchange. )Wow; Is connected to the adsorption beds (14a, 14b), the oxygen discharge unit for storing and discharging oxygen delivered from the adsorption beds (14a, 14b) in the built-in oxygen storage tank 22 ( 24); The check valve is connected between the oxygen discharge portion 24 and the pipe connecting the adsorption beds 14a and 14b, and allows oxygen to pass through the adsorption beds 14a and 14b in one direction. 26a) and 26b; The suction unit 10 and the nitrogen discharge unit 12 and the connection between the pipes connecting the adsorption beds (14a, 14b) is installed, the opposite operation of the intake and exhaust of the adsorption beds (14a, 14b) And a valve (28a), (28b), (28c), and (28d) integrally supplying or discharging the compressed air to be introduced and opened accordingly, so as to clean the adsorbent of the oxygen generator for automobiles. The oxygen generator for automobiles according to claim 1, wherein the heat insulating material 30 is installed on the outer surface of the pipe connecting the flow rate adjusting pipes 16a, 16b and the dry oxygen heating unit 20. Adsorbent scrubber. According to claim 1, The oxygen discharge unit 24 has an anion generator 32 and the scent generator 34 which can supply a high concentration of oxygen to the vehicle interior by selectively passing the oxygen supplied to the room via this place Adsorbent cleaning device of the oxygen generator for cars, characterized in that the connection is configured.