KR20030035822A - Ejector Device For Vacuum Dry - Google Patents

Abstract

PURPOSE: An ejector for vacuum drying is provided to effectively dry the inside of a sterilizing chamber and to compact the structure of an ejector. CONSTITUTION: An ejector(100) for vacuum drying comprises an ejector body(110) made of metal and an air inject nozzle(130). Inside the ejector body, paths(112,114) for communicating a first chamber(10) with a second chamber(20) are formed continuously. The air inject nozzle is separably connected to the inside of the first path via a screw(134). The pressurized air generated from an air pump(30) is injected through the first path of the ejector body by the air inject nozzle. Upon connecting the air inject nozzle to the ejector body, a gap is formed between the first path and the air inject nozzle.

Description

Ejector Device for Vacuum Drying

The present invention relates to an ejector apparatus for vacuum drying, and more particularly, to an ejector apparatus for causing a vacuum to rapidly dry the surrounding room by causing a negative pressure caused by a high-speed injection of air.

In general, there are many places that require drying operations indoors, for example, the drying process in the sterilizer used to sterilize medical supplies in hospitals, etc. is a very important important factor. The reason is that if the drying process is not performed properly, steam generated during the autoclaving process in the sterilizer is buried as it is, and when it is used as it, there is a cause of reproduction or infection of another bacteria.

Therefore, in the case of the existing large-scale autoclave (Autoclave) is equipped with a vacuum pump to perform the drying operation. The reason for using the vacuum pump is to lower the pressure in the sterilization chamber (Chamber) for accommodating the medical supplies and the like. There are two reasons to create a vacuum by lowering the pressure in the sterilization chamber. In the whole process, the vacuum process is divided into pre-vacuum and post-vacuum. The first pre-vacuum excludes the air in the sterilization chamber during the infiltration of steam. By removing the air layer (the air layer is a heat insulating layer, which prevents sterilization because it cannot transfer heat), and makes a second post-vacuum, the vaporization point in the sterilization chamber is lowered to prevent condensation such as steam. While the steam is discharged to the outside, perfect drying in the sterilization chamber is possible.

However, most top-table autoclaves do not have a vacuum pump unlike the large autoclaves illustrated above.

The reason is that it is heavy compared to the size of the sterilizer, the vibration and sound of the vacuum pump is severe, and the accessories must be installed in the vicinity. Attachments are water and drain pipes.

However, the upright autoclave can be easily moved compared to the above-mentioned large sterilizer and can be installed wherever there is electricity. However, vacuum pumps need water because they suck steam. Therefore, the installation of the water supply pipe and the drain pipe becomes inevitable and the movement becomes inconvenient, and the above advantages of the top-table autoclave disappear. Therefore, the top-table autoclave that does not use a vacuum pump is sterilized by gravity, so there is a problem that the door of the sterilization chamber must be opened by drying during the drying process.

In the sterilizer, the opening of the sterilization chamber door during the drying process may reduce the sterilization effect due to the penetration of bacteria into the sterilization chamber, and there is also the inconvenience that users must open and close the door daily during the drying process.

Accordingly, an object of the present invention is to provide an ejector apparatus which solves the above-mentioned shortcomings and induces a negative pressure according to a speed change in a high-speed air injection direction to rapidly dry a vacuum in an adjacent room. .

In order to achieve the above object, the vacuum drying ejector apparatus of the present invention has a plurality of first and second passages for contacting the first chamber and the second chamber arranged at right angles to be in contact with each other, and the first chamber of the first passage and On the other side of the first passage through the second passage of the air to the first chamber by the high-speed injection of the change in the velocity energy in the first passage causing the negative pressure and air remaining in the second chamber and the like By being sucked into the interior of the chamber, characterized in that it comprises an ejector for drying the inside of the second chamber in a vacuum atmosphere.

The ejector may be formed at right angles to the passages, and at each end of the passages, a body including first and second fastening portions for sealingly connecting the first and second chambers; A third fastening part detachably screwed to an end of the first passage opposite to the first chamber to connect with an air pump, and having an air spray hole communicating with the first passage and the second passage; And an air jet nozzle positioned at a point via the second passage with a gap between the first passage.

In addition, it is preferable that the air injection hole forms a conical shape that narrows toward the tip of the nozzle.

The present invention having the configuration as described above has the effect that can be produced in a low cost as a compact structure and can be carried out quickly to dry the room to be dried, in addition, concentrated, distilled, deodorized, crystal, exhaust It can be applied to impregnation, mixing, cooling, and conveying work.

1 is a schematic installation diagram of an ejector device for vacuum drying according to the present invention,

FIG. 2 is a cross-sectional view in which only the vacuum drying ejector shown in FIG. 1 is separated and enlarged.

3 is an enlarged cross-sectional view taken along line II of FIG. 2;

Figure 4 is a perspective view showing the inside of the sterilizer showing that the ejector device for vacuum drying according to the present invention is applied to the sterilizer.

* Description of the symbols for the main parts of the drawings *

10: first room 20: second room

30: air pump 100: ejector

110: ejector body 112: first passage

114: 2nd passage 116,118,138: 1st, 2nd, 3rd screw connection part

130: air spray nozzle 132: air sprayer

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

1 is a schematic installation diagram of an ejector apparatus for vacuum drying according to the present invention.

As shown in the drawing, the ejector device 100 according to the present invention is connected to be in contact with the first chamber 10 and the second chamber 20 arranged at a right angle, and is connected to the first chamber 10. A negative pressure in the ejector device 100 is caused by a change in the velocity energy by the air injected at a high speed from the air pump 30 (air compressor, etc.) toward the first chamber 10 on the opposite side of the. By doing so, the air and steam remaining in the second chamber 20 are sucked into the interior of the first chamber 10 to achieve drying in the second chamber 20 in a vacuum atmosphere. In the vacuum drying operation by the ejector device 100, the first chamber 10 is opened while the second chamber 20 is in a closed state. The configuration of the ejector device 100 will be described in more detail with reference to FIG. 2.

FIG. 2 is a cross-sectional view in which only the vacuum drying ejector device shown in FIG. 1 is separated and enlarged.

As shown in the drawing, the ejector apparatus 100 according to the present invention is composed of an ejector body 110 and an air jet nozzle 130 formed of a metal material to be resistant to high temperature, high pressure, and the like.

In the ejector main body 110, passages 112 and 114 for connecting the first chamber 10 and the second chamber 20 to be in contact with each other are continuously formed while at least perpendicular to each other. The first passage 112 is formed to completely penetrate the longitudinal direction of the ejector main body 110, and the second passage 114 is formed at any one end of the ejector main body 110, that is, the first path as shown in FIG. It is provided at right angles to the first passage 112 so as to be in contact with the first passage 112 at one side of the end opposite to the first chamber 10. Therefore, the first chamber 10 and the second chamber 20 are in contact with each other through the first and second passages 112 and 114. First and second screw fastening portions 116 and 118 for hermetically fastening the first chamber 10 and the second chamber 20 are installed at end openings of the first and second passages 112 and 114. have. The first chamber 10 and the second chamber are connected to the first and second screw fastening portions 116 and 118 for convenience of work rather than the first chamber 10 and the second chamber 20 are directly coupled to each other. It is hermetically fastened with fastening portions (not shown) formed in the tubes extending from 20, respectively.

The air injection nozzle 130 is detachably fastened to the inside of the first passage 112 opposite to the first chamber 10 of the ejector body 110, and is generated from the air pump 30. Pressurized air is injected along the first passage 112 of the ejector body 110. The air injection nozzle 130 is formed so that the air injection hole 132 which is in contact with the first passage 112 penetrates through the nozzle 130, thereby receiving pressurized air from the air pump 30. It is to be injected into the first passage (112). In particular, the air injection nozzle 130 is connected to the air injection hole 132 of the air injection nozzle 130 and the second passage 114, the air injection nozzle 130 to the ejector body 110 ), The air injection nozzle 130 is fastened so as not to block the second passage 114, and the tip portion thereof is spaced with the inner circumferential wall portion of the first passage 112 (d). Are placed. In order to form the air gap d, a corresponding portion of the tip portion of the air injection nozzle 130 and the tip portion of the air injection nozzle 130 in the first passage 112 may have a taper portion 115. It is desirable to achieve this. The air injection nozzle 130 is set to a length suitable for forming a gap d between the main wall surface of the first passage 112 and the air injection nozzle 130 to the ejector main body 110. When fastened to the air gap (d) is naturally formed between the first passage 112 and. The reason for providing the air gap d is to achieve a state in which the air injection hole 132 of the air injection nozzle 130 and the first passage 112 and the second passage 114 are in contact with each other. The size of the air gap (d) can be arbitrarily adjusted by adjusting the air injection nozzle 130 through the screw portion 134, so that the size of the air gap (d) is not large resistance to the passage of air, rather than wider Narrowing is desirable. In addition, the air injection hole 132 of the air injection nozzle 130 is an air injection hole of the air injection nozzle 130 to inject the injection speed of the pressurized air supplied from the air pump 30 at a higher speed It is preferable to make the structure of 132 into a conical shape that becomes narrower toward its distal end.

The air injection nozzle 130 is preferably installed to protrude from the ejector body 110 in order to facilitate connection with the air pump 30 when fastened to the ejector body 110. In addition, a third screw fastening portion 138 for airtight connection with the air pump 30 is provided at the protruding end of the injection nozzle 130.

In this configuration, the air generated by the air pump 30 together with the operation of the air pump 30 is directed toward the first passage 112 through the air injection hole 132 of the air injection nozzle 130. When the air passing through the air injection hole 132 reaches a point P1 having a narrow diameter, the air is strongly compressed to reduce the short area, and thus the air is pressurized more strongly than the pressure from the air pump 30. While forming a high-speed jet from the air injection hole (132). By generating a negative pressure to the P2 portion which is around the high-speed jet air of the air by the air injection nozzle 130 to induce the action to suck the surrounding air into the high-speed jet air (Suction) It quickly flows into the second chamber (10). Therefore, the air or steam remaining in the second chamber 20 is operated in the same manner as described above, in the direction of high-speed injection of the first passage 112 through the second passage 114 and the air gap d. By being sucked into the first chamber 10 with the air injected by the pressure injection from the air injection nozzle 130, the inside of the second chamber 20 is dried in a vacuum. The reason why the air is injected through the air injection nozzle 130 is to induce a negative pressure to forcibly and rapidly suck inhaled substances such as air or steam present in the surroundings. The injection speed of the air through the air injection nozzle 130 can be arbitrarily adjusted according to the diameter size of the air injection hole 132. In the above, by checking whether the vacuum in the second chamber 20 is completed through a vacuum gauge (not shown) installed in the second chamber 20, the vacuum drying operation is terminated, and the vacuum drying operation is terminated by air. It is executed by closing the valve V (see Fig. 1) on the second chamber 20 side with the operation of the pump 30 stopped. The opening and closing operation of the valve V may be configured to automatically operate together with starting and stopping of the air pump 30 according to the vacuum drying operation in the second chamber 20. Such a circuit configuration is a general technique in the art, and any modification can be made, and thus a detailed description thereof will be omitted.

Figure 4 is a perspective view showing the inside of the sterilizer showing that the vacuum drying ejector device according to the present invention is applied to a medical sterilizer. Like parts of the present invention are denoted by the same reference numerals in order to avoid overlapping description and help understanding.

Prior to describing an example of use of the present invention through the sterilizer 1, the medical sterilizer 1 to which the present invention is briefly described, the medical sterilizer 1 is a variety of medical supplies (surgical tools, surgical clothing, etc.) in the hospital ) Is used for sterilization and sterilization. The sterilization operation through the sterilizer 1 is performed through water supply, sterilization, exhausting and drying, and finally sterilization sterilization is performed.

① First, in the water supply process, when the solenoid valve 5 is opened, water already stored in the water storage tank 10 flows along the water supply pipe 6 to flow into the chamber 20 that forms a sterilization chamber. Water flowing into the chamber 20 stops water supply by closing the solenoid valve 5 according to whether the water level sensor 9 detects the water level.

② Sterilization process is executed when water supply work is completed. The sterilization process is performed by the heater 13 installed in the chamber 20. The sterilization chamber is continued until the inside of the sterilization chamber formed in the chamber 20 and the temperature and pressure reach a set value. The cold air inside and some steam below the heated set temperature are discharged into the water storage tank 10 through the air exhauster 4 after passing the exhaust pipe 14. When the temperature and pressure inside the sterilization chamber reach the set value by the continuous heating of the heater 13, the air discharger 4 is closed, and the sterilized sterilized article previously placed in the sterilization chamber is disinfected by the set temperature and pressure. Sterilized.

③ When the sterilization work is completed, the exhaust process is performed to discharge the high temperature and high pressure steam inside the sterilization chamber. The exhaust is quickly discharged and stored into the storage tank 10 through the water supply pipe 6 and the exhaust pipe 14 while both the air discharger 4 and the solenoid valve 5 are opened. The exhaust of the sterilization chamber is naturally exhausted until the internal temperature is typically 100 degrees.

④ When the exhaust process is completed, the drying process is carried out. The drying process is carried out to completely remove the moisture in the sterilization chamber and the moisture in the sterilization chamber since there is still vaporized water in the sterilization chamber and steam which has not been discharged in the exhaust process, and the sterilization target has moisture. . The drying operation is performed by the ejector apparatus 100 of the present invention. That is, the ejector apparatus 100 includes a storage tank 10 (corresponding to the first chamber of FIGS. 1 and 2) and a chamber 20 (corresponding to the second chamber of FIGS. 1 and 2) to form a sterilization chamber. The valves V are provided in contact with each other, and the air pump 30 (air compressor) is provided in contact with the water storage tank 10 via the pipe 32.

Therefore, the ejector apparatus 100 has the air generated in the air pump 30 by the start of the operation of the air pump 30 as described with reference to the embodiment of FIGS. 1 to 3 inside the ejector apparatus 100. When sprayed at a high speed toward the water storage tank 10 side through the air spray nozzle (see Fig. 2) provided in the air in the sterilization chamber of the chamber 20 by the negative pressure generated by the action as described in Figure 2 sterilization process Is sucked into the interior of the reservoir tank 10 in the direction of air injection through the open valve (V) with the moisture in the disinfectant, the sterilization chamber in the chamber 20 is quickly To dry. The drying process continues for a preset time until the moisture on the sterilized disinfectant is completely removed. The valve V automatically closes upon shutdown of the air pump 30. The valve (V) is automatically turned on / off in accordance with the start and stop of the air pump (30). The vacuum drying process in the sterilization chamber of the chamber 20 is performed by stopping the operation of the air pump 30. After completion of the drying process, when the door is opened and the sterilized material is removed from the sterilization chamber, a series of sterilization sterilization processes are completed. do.

In the above, the embodiment of the ejector apparatus 100 of the present invention was described in the vacuum process, but when the ejector apparatus of the present invention is operated in the water supply process, the inside of the sterilization chamber of the chamber 20 is negative pressure by the same principle as described above. By achieving a (or negative pressure) it can be quickly supplied to the interior of the chamber 20 to form a sterilization chamber through the solenoid valve 5 and the water supply pipe 6 to open the water of the water storage tank (10).

In the embodiment according to FIG. 4 described above, the ejector apparatus of the present invention is described as an example in which a sterilizer is applied. In addition, the present invention is concentrated, distilled, deodorized, crystallized, exhausted, impregnated, mixed, cooled, or transferred. It can also be applied.

As described above, according to the present invention, the compact structure has the effect of being inexpensively manufactured and the effect of allowing the room to be dried to be quickly carried out in a dry state, and in addition, concentrated, distilled, deodorized, crystallized, and evacuated. It can be applied to impregnation, mixing, cooling, and conveying work.

Claims (3)

A plurality of first and second passages for connecting the first chamber and the second chamber arranged at right angles to be in contact with each other, and facing the first chamber via the second passage from the opposite side to the first chamber of the first passage The second chamber is evacuated by sucking the air and steam remaining in the second chamber into the interior of the first chamber by causing a negative pressure caused by a change in velocity energy in the first passage by the high-speed injection of air. Ejector device for vacuum drying comprising an ejector for drying. 2. The apparatus of claim 1, wherein the ejector comprises: a body formed at right angles to the passages, each end of each of the passages having first and second fastening portions for watertightly connecting the first and second chambers; And A third fastening part detachably screwed to an end of the first passage opposite to the first chamber to connect with an air pump, and having an air spray hole communicating with the first passage and the second passage; And an air jet nozzle positioned at a point passing through the second passage with the first passage spaced therebetween. The ejector device for vacuum drying according to claim 2, wherein the air injection hole has a conical shape that narrows toward the tip of the nozzle.