KR100840930B1 - Plate with spiral-shaped passage for freeze dryer and manufacturing method thereof - Google Patents

Abstract

A spiral passage plate for a freeze drying device and a method for manufacturing the same are provided to improve quality of freeze dried product and to improve productivity by spirally aligning a passage wherein a heat source is circulated. A spiral passage plate for a freeze drying device comprises a first plate(10), a hollow angular pipe(20), and a second plate(30). The first plate has an inlet pipe(12), and an outlet pipe(14). A heat medium is passed through the inlet pipe from external and discharged through the outlet pipe. The hollow angular pipe is spirally placed on the first plate, and has an inlet(22) and an outlet(24). The inlet is connected to the inlet pipe and the outlet is assembled to the outlet pipe. The second plate is engaged with the hollow angular pipe to cover. The first plate, the hollow angular member, and the second plate are made of stainless steel.

Description

Spiral flow path plate for lyophilizer and its manufacturing method {PLATE WITH SPIRAL-SHAPED PASSAGE FOR FREEZE DRYER AND MANUFACTURING METHOD THEREOF}

The present invention relates to a spiral flow path plate for a lyophilizer and a method for manufacturing the same, and in particular, to minimize the temperature variation of each part in the spiral flow path plate and to improve the quality of the freeze-dried product and to increase productivity. It relates to a manufacturing method.

Lyophilization is widely used as a drying method for food, liquid medicine, blood, cells, etc. in the food processing field, the pharmaceutical field, and the biological field. Lyophilization is carried out by sublimation, which freezes the dried matter and lowers the pressure of the water to below the triple point of water in which water, ice and water coexist, thereby changing the ice directly to water vapor. That is, under low pressure of 6 millibar (mbar) or 4.6 Torr, the water in the form of ice is sublimated directly into water vapor without changing into a liquid according to the supply of thermal energy. Will remain. Thus, the dried porous construct can be completely and quickly rehydrated.

A general lyophilizer is composed of a process chamber for performing lyophilization of a dry matter and a condenser chamber for collecting water vapor for sanitary treatment of the dry matter, and the process chamber and the condenser chamber are connected by conduits. The process chamber is equipped with a shelf capable of circulating brine through the heating medium for lyophilization of the dry matter. As shown in FIG. 1, the shelf 1 of the conventional process chamber has a series flow path 2 formed therein, so that the heat medium H flowing into the inflow pipe 3 has a series flow path 2. After circulating through the outflow pipe (4) is to be discharged. In addition, a condenser chamber is provided with a condenser for condensing and freezing water vapor. The vacuum of such a process chamber and a condenser chamber is established by a vacuum pump.

On the other hand, after placing the dry matter on the shelf 1 of the process chamber, the heat medium H is circulated on the shelf 1 to lyophilize the dry matter. Water vapor that sublimes upon lyophilization of the dry matter enters the condenser chamber from the process chamber through a conduit and then condenses and freezes on the surface of the condenser. Ice frozen on the surface of the condenser is defrosted by circulating a high-temperature / high-pressure refrigerant called hot gas or spraying water on the condenser.

There are various methods of freezing the dry matter, and a large-capacity lyophilizer is provided with a separate freezing chamber to freeze the dry matter in large quantities. The freeze chamber is not provided, and the dry matter is frozen by contact with the shelf by being installed inside the chamber where freezing and drying are performed and keeping the temperature of the shelf on which the dry matter is placed at a low temperature. Cooling the shelf at low temperature includes cooling the heat medium and circulating it to the shelf, and cooling the evaporator pipe of the freezer by contacting the lower part of the shelf. The heat medium is mainly trichloroethyiene or silicone oil. This is used.

However, the method of cooling the heat medium and circulating it to the shelf has a problem in that heat loss occurs in a pipe through which the heat medium flows and the evaporation temperature of the refrigerant for cooling the heat medium decreases, thereby reducing the efficiency of the refrigerator. In addition, since the circulation pump for forcibly circulating the heat medium to the shelf, the energy consumption is large. In addition, the method of cooling by contacting the evaporator pipe of the freezer to the lower part of the shelf, there is a problem that the time required for cooling freezing because heat transfer resistance occurs in the process of heat transfer by the contact of the shelf and the evaporator pipe. In addition, the heating heater is installed in the lower part of the shelf in order to dry the frozen dry matter, but in order to reduce the temperature variation of the shelf, a plurality of heating heaters must be installed in the lower part of the shelf. There is a problem.

The present invention has been proposed to solve the above-mentioned problems, and an object of the present invention is to minimize the temperature deviation of each part in the bare channel plate in which the dry matter is placed, thereby improving the quality of the freeze-dried product and increasing the productivity. The present invention provides a spiral flow path plate for a freeze-drier and a method of manufacturing the same.

According to an aspect of the present invention, there is provided a spiral flow path plate for a lyophilizer, comprising: a first plate having an inlet pipe through which a heat medium flows from the outside and an outlet pipe through which the heat medium flows out; A hollow member spirally mounted to the first plate and having an inlet to which an inlet pipe is coupled and an outlet to which the outlet pipe is coupled; And a second plate coupled to the hollow member to cover the hollow member.

The first plate, the hollow member and the second plate are preferably formed of stainless steel. The hollow member is composed of square pipes. Each pipe is welded to the top edge of the first plate so that the heat medium introduced through the inlet pipe does not leak to the outside while circulating between the pipe and the first plate. The angle pipe is band-welded to the first plate. The square pipe and the second plate are welded by inserting a welding rod into the through hole formed in the second plate and then melting the welding rod. On the other hand, the lyophilizer spiral flow path plate may further include a distributor connected to each of the inlet pipe and the outlet pipe to distribute the heat medium.

According to another aspect of the present invention, there is provided a method of manufacturing a spiral flow path plate for a lyophilizer, wherein an inlet port is coupled to a first plate on which an inlet pipe into which a heat medium flows in and an outlet pipe outflow of a heat medium into the outside are formed. And spirally mounting the hollow member having the outlet through which the outlet pipe is coupled, and coupling the second plate to the hollow member to cover the hollow member.

The first plate, the hollow member and the second plate are formed of stainless steel, and the hollow member is made of square pipes. The angular pipe is welded to the upper edge of the first plate so that the heat medium introduced through the inlet pipe does not leak to the outside while circulating between the angular pipe and the first plate. A square pipe is welded to the first plate, a welding rod is put into a through hole formed in the second plate, and the welding rod is melted to weld the square pipe and the second plate.

According to the spiral flow path plate for the freeze-drier and the manufacturing method according to the present invention as described above, by forming a spiral flow path through which the heat medium circulates to minimize the temperature variation of each part in the spiral flow path plate to improve the quality of the freeze-dried product There is an effect that can increase the productivity.

Hereinafter, a detailed description will be made based on the spiral flow path plate for the lyophilizer according to a preferred embodiment of the present invention and a method of manufacturing the same.

2 and 3 illustrate one embodiment of a spiral flow path plate for a lyophilizer according to an aspect of the present invention. The spiral flow path plate for the freeze dryer according to the present invention may be used as a shelf for the freeze dryer. The spiral flow path plate for the lyophilizer of the present invention is composed of a first plate 10, a square pipe 20, and a second plate 30.
Referring to FIG. 2, the first plate 10 is made of a metal plate such as stainless steel having excellent corrosion resistance and durability, and the inside of the first plate 10 is entirely formed in a hollow form or partially hollow form. Can be formed. Accordingly, the material cost can be reduced and the total weight can be reduced. In addition, an inlet pipe 12 through which the heat medium H flows in from the outside and an outlet pipe 14 through which the heat medium H flows out are disposed in the first plate 10. As the heat medium (H), trichloroethylene (Trichloroethyiene), silicone oil, etc. are mainly used.

The square pipe 20 is spirally disposed on the upper surface of the first plate 10 and mounted in a band weld. Accordingly, the spiral flow path is formed on the first plate 10. At this time, the inlet 22 is formed in each pipe 20 so that the heat medium (H) is introduced into the inside. Inlet 22 is coupled to the inlet tube 12 disposed on the first plate (10). In addition, each pipe 20 is formed with an outlet 24 through which the heat medium H circulated in the spiral flow path flows outward. The outlet 24 is coupled to the outlet tube 14 disposed on the first plate 10. Such a pipe 20 is made of a stainless steel material excellent in corrosion resistance and durability. Square pipe 20 in the present embodiment can be replaced by any number of other hollow bodies. On the other hand, the angular pipe 20 is the first plate 10 so that the heat medium H introduced through the inlet pipe 12 does not leak to the outside while circulating between the first plate 10 and the angular pipe 20. All welded to the top edge of the.

Referring to Figure 2, the second plate 30 is made of a metal plate such as stainless steel excellent in corrosion resistance and durability. The through-hole 32 is formed in the second plate 30 at a position corresponding to the center line in the longitudinal direction of the square pipe 20. The second plate 30 is coupled to the upper surface of the square pipe 20 by inserting a welding rod into the through hole 32 and then melting and welding the welding rod.

As shown in FIG. 3, the spiral flow path plate for the freeze dryer according to the aspect of the present invention includes an inflow pipe 12 through which the heat medium H flows in from the outside and an outflow pipe 14 through which the heat medium H flows out to the outside. It further comprises a distributor 40 is connected to each) distributing the heat medium (H).

As described above, when the heat medium H is introduced from the outside through the inlet pipe 12 and then circulates through the spiral flow path in the direction of the arrow as shown in FIG. 3, the temperature deviation of each part in the spiral flow path plate is approximately ± It can be minimized to about 0.5 ° C or less. This improves the quality of the lyophilisate and increases the productivity.

On the other hand, it will be described the manufacturing method of the spiral flow path plate for freeze dryer according to another aspect of the present invention.

As shown in Fig. 2 and 3, in the first plate 10, the inlet pipe 12 through which the heat medium H flows in from the outside and the outflow pipe 14 through which the heat medium H flows out. The inlet 22 to which the inlet pipe 12 is coupled is formed, and the angular pipe 20 to which the outlet 24 to which the outlet pipe 14 is coupled is formed in a spiral shape. The second plate 30 is coupled to the angle pipe 20 so as to cover the angle pipe 20 mounted on the first plate 10. At this time, the first plate 10, the square pipe 20 and the second plate 30 is formed of stainless steel.

The angular pipe 20 is welded to the upper edge of the first plate 10 so that the heat medium H introduced through the inlet pipe 12 circulates between the angular pipe 20 and the first plate 10. Do not leak outside. In addition, the first plate 10 and the square pipe 20 are coupled by band welding. In addition, the angle pipe 20 and the second plate 30 is put into the through-hole 32 formed in the second plate 30, and then welded by melting the welding rod to combine.

The present invention described above is not limited to the above-described embodiment and the accompanying drawings, and various substitutions, modifications, and changes are possible within the scope without departing from the technical spirit of the present invention. It will be apparent to those of ordinary skill in Esau.

1 is a cross-sectional view showing a conventional serial flow path shelf,

Figure 2 is an exploded perspective view showing an exploded helical flow passage plate for the lyophilizer according to the present invention,

3 is a cross-sectional view showing a circulation path of the heat medium in the spiral flow path plate for the freeze dryer according to the present invention.

Explanation of symbols on the main parts of the drawings

10: first plate 12: inlet pipe

14: outlet pipe 20: hollow member (angle pipe)

22: inlet 24: outlet

30: second plate 40: distributor

Claims (11)

A first plate on which an inflow pipe into which the heat medium flows in from the outside and an outlet pipe outflow of the heat medium flows out; A hollow member spirally mounted to the first plate and having an inlet through which the inlet pipe is coupled, and an outlet through which the outlet pipe is coupled; And a second plate coupled to the hollow member to cover the hollow member. The method of claim 1, The first plate, the hollow member and the second plate is a spiral flow path plate for a lyophilizer is formed of stainless steel. The method according to claim 1 or 2, The hollow member is a spiral flow path plate for a freeze-dryer consisting of square pipes. The method of claim 3, wherein The helical flow path plate for the lyophilizer for preventing the leakage of the heat medium flowing through the inlet pipe to the outside of the angular pipe is all welded to the upper edge of the first plate during the circulation between the angular pipe and the first plate. The method of claim 3, wherein The angular pipe is band-welded to the first plate spiral flow path plate for lyophilizer. The method of claim 3, wherein The angular pipe and the second plate is a spiral flow path plate for a lyophilizer which is welded by inserting a welding rod into the through-hole formed in the second plate and then melting the welding rod. The method of claim 1, And a distributor configured to be connected to the inlet pipe and the outlet pipe, respectively, for distributing a heat medium. Spiral mounting of the hollow member in which the inlet is coupled to the inlet pipe is formed on the first plate is arranged in the first plate in which the inlet pipe in which the heat medium is introduced from the outside and the outlet pipe outflow to the outside is formed; And coupling a second plate to the hollow member so as to cover the hollow member. The method of claim 8, The first plate, the hollow member and the second plate is formed of stainless steel, the hollow member is a manufacturing method of the spiral flow path plate for a freeze-dryer consisting of square pipes. The method of claim 9, The angular pipe is welded to the upper edge of the first plate so that the heat medium introduced through the inlet pipe does not leak to the outside while circulating between the angular pipe and the first plate. A method for producing a spiral flow path plate for a lyophilizer for band welding each pipe. The method of claim 9, And a welding rod is inserted into the through hole formed in the second plate, and then the welding rod is melted to weld the square pipe and the second plate.

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