KR20160122511A - Apparatus of cooling tank for indirect cooling - Google Patents

Apparatus of cooling tank for indirect cooling Download PDF

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Publication number
KR20160122511A
KR20160122511A KR1020150052507A KR20150052507A KR20160122511A KR 20160122511 A KR20160122511 A KR 20160122511A KR 1020150052507 A KR1020150052507 A KR 1020150052507A KR 20150052507 A KR20150052507 A KR 20150052507A KR 20160122511 A KR20160122511 A KR 20160122511A
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KR
South Korea
Prior art keywords
cooling
water tank
coolant
refrigerant
temperature range
Prior art date
Application number
KR1020150052507A
Other languages
Korean (ko)
Inventor
류근하
김경훈
박명오
오광섭
박선홍
Original Assignee
(주)삼양패키징
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Application filed by (주)삼양패키징 filed Critical (주)삼양패키징
Priority to KR1020150052507A priority Critical patent/KR20160122511A/en
Publication of KR20160122511A publication Critical patent/KR20160122511A/en

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    • B29C47/8835—
    • B29C47/8895—

Abstract

The present invention relates to a cooling water tank device using an indirect cooling method, and more particularly, to a cooling water tank device using an indirect cooling method, comprising: a cooling part for containing a cooling liquid and cooling a cooling object immersed in the cooling liquid; And a heat absorbing portion provided at a lower portion of the cooling portion to cool the cooling liquid accommodated in the cooling portion to a predetermined temperature range by accommodating the coolant to improve the volume of the cooling water tank and the volume of the auxiliary tank, The effect that the waste water is generated only by the volume in which the cooling liquid is received.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a cooling water tank,

The present invention relates to a cooling water tank system using an indirect cooling system and more particularly to a cooling water tank system using an indirect cooling system in which a coolant for controlling the temperature of a cooling water tank is supplied to a lower portion of a cooling water tank for cooling and cooling a cooling object such as extruded polyethylene terephthalate And a cooling water tank for indirectly controlling the temperature of the cooling water tank.

When defects occur in preforms or final containers in a container manufacturing process using polyethylene terephthalate resin, they can be recycled and used as raw materials again.

The recycling process typically involves grinding, melting, extruding, and cooling and pelletizing the defective preform or product.

Fig. 1 is a plan view and front cross-sectional view showing a conventional cooling device for cooling an extrudate during a PET recycling process, and Fig. 2 is a perspective view of the conventional cooling device of Fig.

1, a high-temperature (about 250 degrees Celsius) PET extrudate 1 extruded in the form of a line from a PET supply 20 is introduced into the tub 10 by an intrusion 30, The water is cooled by the cooling water accommodated in the water tank 10 while being taken out of the water tank 10 after being infiltrated and becomes a usable temperature (about 60 to 70 degrees Celsius) in the subsequent process .

In the conventional water tank 10 as shown in FIG. 2, the internal space 12 has a volume of about 0.35 cubic meters. The cooling water 2 generated after cooling is regulated as waste water by regulation, The waste disposal facility should be additionally installed.

Related to the recycling of the thermoplastic resin and the like, the conventional patent documents indirectly explaining or disclosing the cooling water tank and the like refer to "a cooling apparatus for manufacturing a heat-shrinkable tube using a thermoplastic resin (Application No. 10-2000-0063889) " "Production Method of Synthetic Resin Monofilaments (Application No. 10-1998-0035433) " and the like.

These conventional patent documents also have a problem in that it is not possible to disclose the technical idea of using a relatively large capacity water tank to reduce the amount of generated wastewater because the amount of generated wastewater is considerable.

KR 10-0357666 B1 KR 10-0279239 B1

The cooling water tank system using indirect cooling according to the present invention has been devised in order to solve the above-mentioned problems of the prior art. In the PET recycling process, a cooling device capable of minimizing the amount of wastewater generated when cooling PET extrudate .

The solution of the present invention is not limited to those mentioned above, and other solutions not mentioned can be clearly understood by those skilled in the art from the following description.

The cooling water tank system using indirect cooling according to the present invention has the following problem solution to the above-mentioned problem to be solved.

The cooling water tank system using indirect cooling according to the present invention includes a cooling unit that receives a cooling liquid and cools the object to be cooled which is immersed in the cooling liquid; And a heat absorber provided at a lower portion of the cooling portion and cooling the coolant accommodated in the cooling portion to a predetermined temperature range.

The cooling unit of the cooling water tank system using indirect cooling according to the present invention includes a water tank having an accommodation space spaced from a bottom surface of the heat absorbing unit and accommodating the coolant into the accommodation space, And is cooled by the refrigerant in the heat absorbing portion.

The heat absorber of the cooling water tank system using indirect cooling according to the present invention may maintain the refrigerant in a predetermined temperature range through the flow of the refrigerant and absorb the heat conducted from the water tank .

The predetermined temperature range of the cooling water tank system using the indirect cooling according to the present invention is 30 to 45 degrees.

The predetermined temperature range of the cooling water tank system using indirect cooling according to the present invention is 5 to 10 degrees.

The cooling water tank device of the cooling water tank system using indirect cooling according to the present invention comprises an infiltration part for infiltrating the cooling object into the cooling liquid accommodated in the cooling part; And a pulling portion provided to pull the cooling object and take it out to the outside of the cooling liquid.

The pulling portion of the cooling water tank device using indirect cooling according to the present invention includes a pressing roll which presses the upper surface of the cooling object and rolls according to the movement of the cooling object; And a supporting roll which is disposed to be spaced apart from the pressing roll and receives the cooling object from the pressing roll and supports the lower surface of the cooling target while rolling the cooling target in accordance with the movement of the cooling target.

The water tank of the cooling water tank system using indirect cooling according to the present invention may be characterized by being made of stainless steel.

The cooling water tank device using indirect cooling according to the present invention is provided with a coolant temperature sensor provided in the water tank for sensing the temperature of the coolant contained in the water tank; A refrigerant temperature sensor provided in the heat absorber to sense the temperature of the refrigerant; A refrigerant supply unit provided in the heat absorption unit and supplying the refrigerant having the predetermined temperature range to the heat absorption unit; And a controller for receiving the temperature information of the coolant from the coolant temperature sensor, receiving the temperature information of the coolant from the coolant temperature sensor, and controlling the coolant supply unit to maintain the coolant at the predetermined temperature range, And a controller for supplying the refrigerant having the predetermined temperature range to the compressor.

The refrigerant supply unit of the cooling water tank system using indirect cooling according to the present invention is characterized in that the refrigerant having the predetermined temperature range is newly introduced into the heat absorbing unit while the refrigerant already existing in the heat absorbing unit is received .

The cooling water tank using indirect cooling according to the present invention having the above-described structure has the following effects.

First, the volume of the water tank in which the PET extrudate is infiltrated is reduced to about 20 to 30% of the existing volume, thereby reducing the amount of wastewater generated.

Secondly, in the case of a conventional water tank, new cooling water is supplied to the water tank from the auxiliary tank in order to control the temperature of the cooling water, so that the overflowing existing cooling water is introduced into the auxiliary tank, Of the volume of the cooling liquid, thereby providing the effect that the waste water is generated only by the volume in which the cooling liquid is received.

The effects of the present invention are not limited to those mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the following description.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a top view and front cross-sectional view showing a conventional cooling device for cooling PET extrudate during a PET recycling process.
2 is a perspective view of the conventional cooling device of FIG.
3 is a perspective view of a cooling water tank system according to a preferred embodiment of the present invention.
4 is a plan view and a front sectional view showing a cooling water tank device according to a preferred embodiment of the present invention.
5 is a block diagram showing the main components of a cooling water tank system according to the present invention.

The cooling water tank system using indirect cooling according to the present invention can be variously modified and may have various embodiments, and specific embodiments will be illustrated in the drawings and described in detail in the description. It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

Hereinafter, a cooling water tank system using indirect cooling according to the present invention will be described in detail with reference to the drawings.

3 is a perspective view of a cooling water tank system according to a preferred embodiment of the present invention. 4 is a plan view and a front sectional view showing a cooling water tank device according to a preferred embodiment of the present invention. 5 is a block diagram showing the main components of a cooling water tank system according to the present invention.

As shown in FIG. 3, the cooling water tank system using indirect cooling according to the present invention includes a cooling unit 110 for directly cooling a cooling object 1; And a heat absorbing part 120 for cooling the cooling part 110 to cool the cooling object 1 indirectly.

4, the object to be extruded is usually a thermoplastic resin such as polyethylene terephthalate (PET), which is used as a raw material for manufacturing a beverage bottle or the like. do.

As shown in FIG. 4, the PET material 20 is melted and extruded so that the molten extrudate as the cooling object 1 is elongated in the form of coarse fibers. The cooling object 1 has a plurality of So that they are infiltrated into the cooling unit 110 in parallel.

As shown in FIG. 3, the cooling unit 110 may have the same shape as a small-sized water tank lifted on a conventional water tank form (see reference numeral 10 in FIG. 2) space to accommodate the liquid is typically a 0.095m 3 has a volume corresponding to about 27% 0.35m 3 compared to the conventional water tank (see Fig. reference numeral 10 in Fig. 2).

The small-sized water tank of the cooling unit 110 is preferably made of a stainless steel material having corrosion resistance and relatively good thermal conductivity.

The cooling unit 110 receives the cooling liquid in the accommodation space as described above, and the cooling liquid is preferably water (H 2 O) which is inexpensive and has a large specific heat.

It is necessary to deeply infiltrate the cooling object 1 into the cooling liquid of the cooling part 110. This is because the infiltration part 30 as shown in FIG.

The infiltration part 30 includes a penetration bar 32 protruding downward so as to be inserted at a right angle from the water surface of the cooling liquid and perpendicular to the bottom surface of the cooling liquid, (31).

The infiltration bar 32 of the infiltration part 30 causes the cooling object 1 to reach the lower bottom surface of the cooling liquid and the roller 31 rolls and breaks the direction of the cooling target object 1, To be released.

The cooling object 1 carried out to the outside by the roller 31 is accommodated in the accommodating portion 50 and is made of a chip having a predetermined length (3 mm).

3, the heat absorbing unit 120 is provided at a lower portion of the cooling unit 110. The heat absorbing unit 120 is configured to cool the cooling liquid accommodated in the cooling unit 110, Preferably about 40 degrees).

The predetermined temperature range here is for adjusting the temperature at which the cooling object 1 passes through the cooling liquid and finally makes the temperature of the cooling object 1 suitable for the cutting process. When the cooling object 1 is lower than 30 degrees, It has been confirmed that it is not economical because unnecessary energy is consumed for maintaining the low temperature and excessive cooling of the cooled object, for example PET extrudate, is not desirable. On the contrary, when the temperature is higher than 45 degrees, the energy consumption may be small in keeping the temperature of the cooling liquid. However, since the cooling object 1 is not sufficiently cooled, tension is hardly generated when pulled by the traction unit 130 , The cutting operation for pelletization is also not smooth, which is a meaningful value.

The heat absorbing part 120 has a shape of another water tank formed in the lower part of the water tank forming the cooling part 110 having the same structure as the conventional water tank 10, (2) for cooling the cooling unit (110).

As described above, in the cooling unit 110, only the cooling liquid (water) accommodated in the limited accommodating space comes into contact with the cooling object, and only the cooling liquid water contained in the accommodating space is generated as waste water. (Which may also be cooling water) accommodated in the cooling object 1 is not in direct contact with the cooling object 1, so that the cooling water does not become wastewater.

This is because the refrigerant 2 contained in the internal space 122 of the heat absorber 120 is directly supplied to the cooling object 1 while the heat absorber 120 ultimately cools the object 1 to be cooled. This is because the cooling liquid which is in direct contact with the cooling object 1 is indirectly cooled without contacting.

The structure of the cooling unit 110 will be described in more detail. As shown in FIG. 3, a small-sized water tank 110 (see FIG. 3) that forms a receiving space separated from the bottom surface 121 of the heat absorbing unit 120 The refrigerant in the heat absorber 120 has a structure in which heat is absorbed by the heat conduction phenomenon through the outer surface of the water tank while receiving the cooling liquid in the space of the water tank.

In the case of the heat absorber 120, the refrigerant received in the inner space 122 is maintained at a predetermined temperature range of about 5 to 10 degrees Celsius through the inflow / outflow of the refrigerant ultimately supplied and received in the auxiliary tank 40 do. The coolant, which is cooler than the normal temperature, absorbs heat (through heat conduction) from the outer surface of the lower portion of the water tank of the cooling unit 110 and the outer surface of the side portion.

As described above, the predetermined temperature range described above is a temperature range of the refrigerant that allows the cooling fluid of the cooling unit 110 to have a predetermined temperature range. If the temperature range is lower than this minimum temperature of 5 degrees, Energy consumption for keeping the temperature low is generated, and excessive cooling of the cooling liquid is generated, which is undesirable. At the same time, if the temperature of the coolant is maintained at a temperature higher than 10 degrees, energy consumption may be reduced, but the cooling of the cooling liquid can not be efficiently performed, and ultimately, the cooling of the cooling object 1 may not be performed in time Bar, which was found to be undesirable. Therefore, the predetermined temperature range is analyzed as meaningful, and has a meaning as a subcomponent of the heat absorber 120.

The cooling water tank system using indirect cooling according to the present invention comprises the above-described penetration portion 30; And a pulling unit 130. [0035]

As shown in Fig. 4, the pulling portion 130 pulls the inflated cooling object 1 to the outside of the cooling liquid and takes it out in a desired direction.

More specifically, the pulling portion 130 includes a pressing roll 131; And a supporting roll 132.

First, the pressing roll 131 is arranged outside the cooling liquid, and presses the upper surface of the cooling object 1 and rolls it.

The pressing roll 131 holds tension of the cooling object 1 while pressing the cooling object 1 which is carried out by the supporting roll 132 to be described later to a proper pressure, 1), which can be caused by wrinkles or bending.

The supporting roll 132 is disposed apart from the pressing roll 131 and is preferably disposed behind the pressing roll 131 so as to receive the cooling object 1 conveyed from the pressing roll 131.

The supporting roll 132 receives the cooling object 1 from the pressing roll 131 and rolls in accordance with the movement of the cooling object 1 while supporting the lower surface of the cooling object 1. [

The cooling object 1 transported by the supporting roll 132 enters the accommodating portion 50 as shown in Fig. 4, and thereafter, has a cutting process as described above.

The cooling water tank system using indirect cooling according to the present invention includes a coolant temperature sensor 111; A refrigerant temperature sensor 123; A refrigerant supply unit 140; And a control unit 101, as shown in FIG.

First, the coolant temperature sensor 111 is provided on one side of the water tank of the cooling unit 110 so as to be submerged in the coolant, so that the temperature of the coolant contained in the water tank can be measured in real time.

In addition, the refrigerant temperature sensor 123 is provided on one side of the heat absorber 120 or inside the refrigerant, and is capable of measuring the temperature of the refrigerant in real time.

These temperature sensors 111 and 123 may be a general digital thermometer that can be used industrially, and the range of the temperature to be measured may be 0 degree Celsius.

5, the refrigerant supply unit 140 (which may be referred to as a cooling water supply unit) is provided in the heat absorption unit 120 to circulate the refrigerant in the heat absorption unit 120 so that the heat absorption unit 120 can maintain a predetermined temperature range. .

The coolant supply unit 140 includes a motor pump and the like so that the coolant stored in the auxiliary tank 40 and the coolant contained in the heat absorber 120 can be circulated, So that the temperature of the coolant in the portion 120 has a predetermined temperature range and ultimately the temperature of the coolant is kept constant and at the same time the coolant 1 is cooled.

5, the control unit 101 may be directly connected to the coolant temperature sensor 111 and may be directly or indirectly connected to the coolant temperature sensor 123 to control the temperature of the coolant (cooling water) Information, and temperature information of the refrigerant (cooling water).

The control unit 101 directly controls the operation of the cooling water supply unit 140 and controls the degree of operation, that is, the ability to pump the cooling water such as a motor pump.

The control unit 101 controls the operation of the coolant supply unit 140 based on the temperature information. The control unit 101 primarily receives the temperature information of the cooling unit 110 and determines the temperature of the coolant of the cooling unit 110 That is, a range of 30 degrees to 45 degrees, so that the temperature of the cooling object passing through the cooling liquid has a temperature suitable for the cutting process, that is, about 60 to 70 degrees.

The control unit 101 controls the operation of the refrigerant supply unit 140 so that the cooling water in the auxiliary tank 40 flows into the refrigerant in the heat absorption unit 120, that is, the cooling water.

The control unit 101 may control the refrigerant supply unit 140 based on the data of the refrigerant temperature sensor 123. [ As described above, the temperature of the coolant is maintained at a predetermined temperature range. For this purpose, the controller 101 controls the temperature of the coolant such that the temperature of the coolant is maintained at the above temperature The refrigerant pumping force of the refrigerant supply unit 140 may be controlled so as to maintain the range of 5 to 10 degrees.

The scope of the present invention is defined by the claims, the parentheses used in the claims are not used for optional limitation but are used for the definite components and the description in parentheses is also interpreted as an essential component .

1: PET extrudate 2: cooling water
10: Conventional water tank for cooling PET 11: Internal surface of water tank
12: inner space of the water tank 20: PET-
30: penetration portion 31: roller
32: infeed bar 40: auxiliary tank
50: accommodating portion 101: control portion
110: Cooling unit 111: Coolant temperature sensor
120: heat absorbing part 121: inner surface of heat absorbing water tank
122: heat absorption water tank space 123: refrigerant temperature sensor
130: pulling part 131: pressing roll
132: Supporting roll 140: Cooling water supply part

Claims (10)

A cooling unit that receives the cooling liquid and cools the cooling target embedded in the cooling liquid; And
And a heat absorbing portion provided at a lower portion of the cooling portion to cool the cooling liquid accommodated in the cooling portion to a predetermined temperature range.
The cooling apparatus according to claim 1,
Characterized in that the cooling water tank is provided with a water tank having a receiving space spaced from a bottom surface of the heat absorbing portion, the cooling water tank accommodating the cooling liquid into the receiving space and being cooled by the refrigerant of the heat absorbing portion through the outer surface of the water tank. .
The heat exchanger according to claim 2,
Wherein the refrigerant is maintained at a predetermined temperature range through the flow of the refrigerant, and the refrigerant absorbs heat conducted from the water tank.
The method according to claim 1,
30 to 45 degrees.
4. The method according to claim 3,
5 to 10 degrees Celsius.
The water treatment system according to claim 1,
An infiltration portion for infiltrating the cooling object into the cooling liquid accommodated in the cooling portion; And
Further comprising a pulling portion provided to pull the cooling object and take it out to the outside of the cooling liquid.
7. The apparatus according to claim 6,
A pressing roll which presses the upper surface of the cooling object and rolls according to the movement of the cooling object; And
And a supporting roll which is disposed to be spaced apart from the pressing roll and receives the cooling object from the pressing roll and supports the lower surface of the cooling target while rolling the cooling target in accordance with the movement of the cooling target.
The water treatment system according to claim 2,
Wherein the cooling water tank is made of stainless steel.
The water treatment system according to claim 3,
A coolant temperature sensor provided in the water tank for sensing the temperature of the coolant contained in the water tank;
A refrigerant temperature sensor provided in the heat absorber to sense the temperature of the refrigerant;
A refrigerant supply unit provided in the heat absorption unit and supplying the refrigerant having the predetermined temperature range to the heat absorption unit; And
The control unit controls the coolant supply unit to receive the temperature information of the coolant from the coolant temperature sensor, receive the temperature information of the coolant from the coolant temperature sensor, and maintain the coolant at the predetermined temperature range, Further comprising a control unit for supplying a coolant having a predetermined temperature range to the cooling water tank.
10. The refrigerating machine according to claim 9,
And a coolant having the predetermined temperature range is newly introduced into the heat absorbing portion while accommodating the refrigerant already existing in the heat absorbing portion.
KR1020150052507A 2015-04-14 2015-04-14 Apparatus of cooling tank for indirect cooling KR20160122511A (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20000015495A (en) 1998-08-29 2000-03-15 김윤 Production method of synthetic resin mono filament
KR20020033264A (en) 2000-10-30 2002-05-06 구광시 Cooling apparatus for manufacturing of heat shrinkable tubes using thermoplastic resin

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20000015495A (en) 1998-08-29 2000-03-15 김윤 Production method of synthetic resin mono filament
KR20020033264A (en) 2000-10-30 2002-05-06 구광시 Cooling apparatus for manufacturing of heat shrinkable tubes using thermoplastic resin

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