KR102605944B1 - Vacuum suction chiller system - Google Patents

Abstract

The present invention relates to a working part that manufactures an object, a first heat exchange part that is connected to the working part and heats the fluid and inputs and recovers it from the working part, and a second heat exchange part that is connected to the first heat exchange part and cools the fluid using the first refrigerant. A chiller system including a heat exchange unit, the first heat exchange unit further including a temperature maintenance unit connected to the working unit, heating the fluid and injecting it into the working unit, and a vacuum unit connected to the working unit and vacuum sucking the fluid in the working unit. to provide. According to the present invention, it is possible to prevent the loss of fluid that inevitably occurs in the process of molding and manufacturing electric vehicle parts, and to minimize the input of the fluid compared to the conventional technology that inputs another fluid, thereby reducing the waste of resources. It has a blocking effect.

Description

Vacuum suction chiller system {Vacuum suction chiller system}

The present invention relates to a vacuum suction chiller system. More specifically, the present invention relates to a chiller system that prevents unnecessary loss of fluid during the molding and manufacturing process of electric vehicle parts and allows easy heat exchange with less heat energy.

A chiller is a refrigeration device that cools a heat exchange medium (process fluid, working fluid, or refrigerant) in a heat exchanger while circulating it in a certain cycle, and the heat exchange medium cooled by the heat exchange cools the object to be cooled. Chillers like these are used throughout the industry, and are especially adopted as an essential device to improve quality by inducing uniform cooling during injection molding of products.

However, conventional chillers have poor temperature precision, and no method has been disclosed to prevent or minimize fluid loss when manufacturing integrated molds such as electric vehicle parts, so a method of pushing the fluid in the mold with another fluid is not disclosed. Many point out that the process of solving this problem using is inefficient.

Prior Document 1: Republic of Korea Patent No. 10-1713680 (registered on March 2, 2017)

The technical task of the present invention is to solve the above problems, and is to develop a chiller system that can prevent waste of fluid during the molding and manufacturing process of electric vehicle parts and maximize thermal efficiency during the manufacturing process.

For this purpose, the present invention is a working part that manufactures an object, a first heat exchanger that is connected to the working part, heats the fluid, and inputs and recovers it to the working part, and a first heat exchanger that cools the fluid using a first refrigerant. A chiller including a second heat exchange unit, the first heat exchange unit further including a temperature maintenance unit connected to the working unit and heating the fluid and injecting it into the working unit, and a vacuum unit connected to the working unit and vacuum sucking the fluid in the working unit. Provides a system.

According to the present invention, it is possible to prevent loss of fluid that inevitably occurs during the molding and manufacturing process of parts for electric vehicles.

In addition, the present invention has the effect of preventing the waste of resources by minimizing the input of the fluid compared to the conventional technology that inputs another fluid.

1 is an overall diagram of a vacuum suction chiller system according to an embodiment of the present invention.
Figure 2 is a diagram showing the entire first heat exchange unit according to an embodiment of the present invention.
Figure 3 is an overall view of the second heat exchange unit according to an embodiment of the present invention.
Figure 4 is a diagram showing the entire second heat exchange unit according to another embodiment of the present invention.
Figure 5 is a diagram showing the first to third heat exchange units according to an embodiment of the present invention.
Figure 6 is a view showing the first to third heat exchange units according to another embodiment of the present invention.

Hereinafter, with reference to the attached drawings, embodiments of the present invention will be described in detail so that those skilled in the art can easily implement the present invention. However, the present invention can be implemented in various different forms and is not limited to the embodiments described below or shown in the drawings. In addition, in order to clearly explain the present invention in the drawings, parts not related to the present invention are omitted, and identical or similar symbols in the drawings indicate identical or similar components.

The purpose and effect of the present invention can be naturally understood or become clearer through the following description, and the purpose and effect of the present invention are not limited to the following description.

Before explaining the present invention in detail, the “fluid” is water as a component that cools the molded product in the working part while being input and discharged from the working part in the process of circulating inside the first heat exchange part, and is comprised of water in the second heat exchange part and the second heat exchange part. The first and second refrigerants circulating through the three heat exchange units may be water or other liquids or gases.

Hereinafter, embodiments according to the present invention will be described in detail with reference to the attached drawings. 1 is an overall diagram of a vacuum suction chiller system according to an embodiment of the present invention.

The vacuum suction chiller system according to an embodiment of the present invention includes a working part 400 for manufacturing an object, a first heat exchanger connected to the working part 400, and a first heat exchanger that heats the fluid and inputs and recovers it from the working part 400. 100), a second heat exchange unit 200 that is connected to the first heat exchange unit 100 and cools the fluid using the first refrigerant, and is connected to the second heat exchange unit 200 and uses the second refrigerant to cool the fluid. It includes a third heat exchange unit 300 that cools.

The working part 400 is manufactured by injection molding an object. The working part 400 is manufactured by inserting raw materials inside and deforming the shape by pressing them. In this process, the fluid is introduced into the work unit 400 to uniformly lower the temperature of the object, thereby maximizing quality.

The first heat exchange unit 100 controls the movement of fluid introduced toward the working unit 400 and is responsible for the circulation of the fluid. In detail, the first heat exchange unit 100 heats the fluid, inputs it to and recovers it from the work unit 400, and moves the recovered fluid to the second heat exchange unit 200. To this end, the first heat exchange unit 100 is connected to the working unit 400 and the second heat exchange unit 200, respectively, and cools the inside of the working unit 400 using fluid.

The second heat exchange unit 200 is a component provided to perform heat exchange with the fluid circulating in the first heat exchange unit 100. In detail, it is connected to the first heat exchange unit 100 and uses the first refrigerant. This cools the fluid. More specifically, the second heat exchange unit 200 cools the fluid through interaction with the fluid that has changed to a high temperature while passing through the working portion 400. To this end, the second heat exchange unit 200 is connected to the first heat exchange unit 100 and includes a cooling unit 210, which is a direct heat exchange means. In addition, the temperature of the first refrigerant in the second heat exchange unit 200 increases during heat exchange with the fluid, and it is cooled again through the third heat exchange unit 300.

The third heat exchange unit 300 is a component for heat exchanging the first refrigerant circulating along the second heat exchange unit 200, and in more detail, lowers the temperature of the first refrigerant using the second refrigerant. Here, the third heat exchange unit 300 may be designed as water-cooled or air-cooled, respectively, according to one embodiment or another embodiment of the present invention.

Figure 2 is a diagram showing the entire first heat exchange unit 100 according to an embodiment of the present invention, and Figure 5 is a diagram showing the first heat exchange unit 100 to the third heat exchange unit 300 according to an embodiment of the present invention. This is a drawing showing .

The supply unit 110 is a component that supplies fluid toward the working unit 400. More specifically, it is a means for initially supplying fluid to pass through the working unit 400 or supplying insufficient fluid during the injection molding process. For this purpose, the supply unit 110 is equipped with a means such as a faucet that injects fluid into the working unit 400, and the fluid moves from the supply unit 110 toward the temperature maintenance unit 120 and then maintains a constant temperature. In this state, it is moved to the work unit 400.

The temperature maintenance unit 120 is a component for easily moving fluid with a more uniform temperature to the working unit 400. It stores the fluid through the supply unit 110 and simultaneously heats the fluid through the heating unit 121. to be moved to the work unit 400. To this end, the temperature maintaining unit 120 is connected to the supply unit 110 and the working unit 400 and includes a heating unit 121.

The heating unit 121 is a component for moving the fluid to the working unit 400 with its temperature raised, and raises the temperature of the fluid to a predetermined reference temperature. Here, the reference temperature is preferably higher than the temperature of the fluid when injected from the supply unit 110 and lower than the temperature inside the working unit 400. Through this, the fluid is introduced into the working unit 400 at a pre-specified reference temperature, and exchanges heat with an object having a temperature higher than the reference temperature to have a temperature higher than the reference temperature.

Here, the conventional injection means leaks or discharges the fluid used for cooling purposes. In this case, the amount of fluid for cooling a plurality of objects gradually increases, which may cause a water shortage problem. In addition, when injection molding an object used as a part of an electric vehicle, fluid must be discharged to the outside of the working part 400, but the existing method of adding additional fluid and pushing it out causes unnecessary waste of fluid and unevenness. This causes the problem of defective products depending on the mechanical performance of the object, etc. Accordingly, the present invention is disclosed, which prevents waste of fluid and maximizes the manufacturing quality of objects by vacuum-sucking the fluid in the working portion 400 through the vacuum portion 130.

The vacuum unit 130 is a component for recovering fluid from the working unit 400, and is connected to the working unit 400 and the first circulation unit 160 to maintain the internal space in a vacuum state, and the first circulation unit 160 is connected to the vacuum unit 130. By driving 160, the vacuum state is released and the fluid in the working part 400 is sucked to move to the internal space. To this end, the vacuum unit 130 may be provided with a means of receiving a tank or a bomb that maintains internal airtightness. The vacuum opening/closing unit 140 is located between the temperature maintaining unit 120 and the vacuum unit 130 and controls the fluid in the vacuum unit 130 to move to the temperature maintaining unit 120 through opening and closing. . In detail, when the vacuum opening/closing unit 140 remains closed, fluid does not move. However, when the vacuum opening/closing unit 140 is opened and the first circulation unit 160 is operated, the fluid sequentially passes through the working unit 400 and the first circulation unit 160 and then moves to the temperature maintenance unit 120. do.

The measuring unit 150 is a component for determining the internal state of the vacuum unit 130 as described above. In detail, the measuring unit 150 measures the pressure within the vacuum unit 130 and determines whether it is in a vacuum state. For this purpose, the measuring unit 150 is connected to the vacuum unit 130, and when the vacuum unit 130 is provided as a tank, it may be provided as a vacuum gauge. Here, the measuring unit 150 is connected to a separately provided notification unit, and when the pressure within the vacuum unit 130 is greater than a predetermined reference pressure, it is considered not to be in a vacuum state and induces the alarm unit to generate an alarm. In detail, the measuring unit 150 compares the measured pressure within the vacuum unit 130 with the reference pressure, and when the pressure within the vacuum unit 130 is greater than the standard pressure, the measuring unit 150 generates alarm information and transmits it to the notification unit. The alarm information is received and a visual and auditory alarm is generated. Through this, if the fluid in the working unit 400 is not vacuumed, the operator can easily check this using only the measuring unit 150 and the alarm unit, thereby significantly increasing work efficiency.

The first circulation unit 160 is a component that moves the fluid in the vacuum unit 130 to the temperature maintenance unit 120. In detail, in the open state of the vacuum opening/closing unit 140, the fluid is driven by the first circulation unit 160. It moves from the working unit 400 and the vacuum unit 130 to the temperature maintaining unit 120 via the first circulation unit 160. For this purpose, the first circulation unit 160 is provided with a circulation means such as a pump that can move the fluid, and is disposed between the vacuum unit 130 and the temperature maintenance unit 120.

The second circulation unit 170 moves the fluid in the temperature maintenance unit 120 to the second heat exchange unit 200. In detail, the second circulation unit 170 moves the fluid moved from the vacuum unit 130 to the temperature maintenance unit 120 to the second heat exchange unit 200 to induce a decrease in the temperature of the fluid. To this end, the second circulation unit 170 is connected to the temperature maintenance unit 120 and the second heat exchange unit 200, and may be provided with the same circulation means as the first circulation unit 160 described above.

Hereinafter, the movement of fluid between the working unit 400 and the first heat exchange unit 100 and the temperature of the fluid will be described.

Fluid is introduced from the supply unit 110 into the temperature maintenance unit 120, and the temperature maintenance unit 120 maintains the temperature of the fluid at a predetermined reference temperature. Here, the reference temperature is preferably lower than the temperature inside the working part 400 to prevent damage to the object when the fluid is introduced into the working part 400.

As the fluid moves and passes from the temperature maintenance unit 120 to the working unit 400, the temperature of the fluid becomes higher than the reference temperature. Afterwards, the vacuum opening/closing unit 140 is opened and the first circulation unit 160 is driven, and the fluid moves to the temperature maintenance unit 120 through the vacuum unit 130 and the first circulation unit 160. Here, the temperature of the fluid reaching the temperature maintaining unit 120 is changed to approach the reference temperature. That is, the high-temperature fluid that has passed through the working unit 400 and the vacuum unit 130 may be naturally cooled in the temperature maintaining unit 120 to approach the reference temperature. Thereafter, by driving the second circulation unit 170, the fluid in the temperature maintaining unit 120 is moved to the second heat exchange unit 200 through the second circulation unit 170, and is adjusted to the standard by the cooling unit 210. Cooled to a temperature lower than the temperature.

Through the above series of configurations, it is possible to prevent the loss of fluid that inevitably occurs in the process of molding and manufacturing electric vehicle parts, and to minimize the input of the fluid compared to the conventional technology that inputs another fluid, thereby minimizing the use of resources. Waste can be prevented.

Figure 3 is an overall view of the second heat exchange unit 200 according to an embodiment of the present invention. As described above, the second heat exchange unit 200 is a component that cools the fluid using the first refrigerant, and includes a cooling unit 210, a compression unit 220, a condensation unit 230, a drying unit 240, and Includes a pressure adjustment unit (250).

The cooling unit 210 is configured to lower the temperature of the fluid through interaction between the first refrigerant and the fluid. In detail, the cooling unit 210 lowers the temperature of the fluid below the reference temperature by performing heat exchange between the relatively low temperature first refrigerant and the relatively high temperature fluid. For this purpose, the cooling unit 210 is connected to the above-described second circulation unit 170 to receive fluid and perform heat exchange with the first refrigerant passing therein. Here, the first refrigerant is preferably provided in a liquid state at a temperature lower than the reference temperature and lower than the temperature of the fluid. That is, it is desirable that the first refrigerant has a lower temperature than the fluid moving from the temperature maintenance unit 120 to the second heat exchange unit 200 through the second circulation unit 170, thereby leading to cooling the fluid. do. Accordingly, as the temperature increases by receiving heat from the fluid within the cooling unit 210, the first refrigerant is evaporated, and the temperature of the fluid is heat exchanged so that it is higher than the temperature of the first refrigerant. Afterwards, the fluid moves again to the temperature maintenance unit 120 and is received so that the temperature is maintained at the reference temperature. In this process, a separate circulation means may be further provided. Additionally, the first refrigerant that has exchanged heat with the fluid moves to the compression unit 220 in a gaseous state.

The compression unit 220 is a component that compresses the first refrigerant, and moves the first refrigerant in a compressed state to the condensation unit 230. For this purpose, the compression unit 220 is connected to the cooling unit 210 and the condensation unit 230, which will be described later, and receives the first refrigerant in a gaseous state from the cooling unit 210, performs compression, and then compresses the condensation unit 230. Move to . Through this, the first refrigerant that has passed through the compression unit 220 is in a high-temperature and high-pressure gaseous state.

The condensing unit 230 is a component that condenses the first refrigerant. More specifically, the heat of the first refrigerant in a high-temperature and high-pressure gaseous state is released and condensed. To this end, the condensing unit 230 may be provided with a condensing means such as a condenser, and in this process, the third heat exchange unit 300 intervenes and uses the second refrigerant to induce easier liquefaction of the first refrigerant. there is. In detail, the third heat exchange unit 300 is a component that cools the condensation unit 230, and in detail, lowers the temperature by heat exchanging a low-temperature second refrigerant in the condensation unit 230. For this purpose, it is desirable that the second refrigerant be provided at a temperature lower than that of the first refrigerant. In addition, in one embodiment of the present invention, it is explained that the second refrigerant is a low-temperature liquid and the third heat exchange unit 300 is water-cooled. However, as in another embodiment of the present invention, the second refrigerant is a low-temperature gas and the third heat exchanger 300 is a water-cooled type. The heat exchange unit 300 may be provided as an air-cooled type. The first refrigerant liquefied through the condensing unit 230 and the third heat exchange unit 300 moves to the drying unit 240.

The drying unit 240 is a component that removes foreign substances and moisture in the first refrigerant. It is provided as a filter drier in the chiller and is connected to the condensing unit 230. Through this, foreign substances and moisture in the first refrigerant that passed through the drying unit 240 are removed and move to the pressure adjusting unit 250.

The pressure adjustment unit 250 induces the first refrigerant to evaporate more easily in the cooling unit 210. In detail, the pressure adjustment unit 250 changes the refrigerant to low temperature and low pressure in the process of moving it to the cooling unit 210. For this purpose, the pressure adjusting unit 250 is located between the drying unit 240 and the cooling unit 210 and connected to each other, and the first refrigerant condensed by sequentially passing through the condensing unit 230 and the drying unit 240. It is brought to a low temperature and low pressure state and moved to the cooling unit 210.

As described above, the cooling unit 210 is a component that exchanges heat between the first refrigerant and the fluid, and is connected to the pressure adjustment unit 250 and the compression unit 220, respectively. Additionally, the cooling unit 210 receives the first refrigerant from the pressure adjustment unit 250. Here, the first refrigerant obtains heat from the fluid within the cooling unit 210 and evaporates, thereby cooling the fluid so that its temperature decreases. Afterwards, the fluid in the cooling unit 210 moves again to the temperature maintenance unit 120, and the gaseous first refrigerant evaporated in the cooling unit 210 moves from the cooling unit 210 to the compression unit 220. compressed again.

Through a series of configurations in the second heat exchange unit 200 as described above, the fluid can be easily cooled below the standard temperature, thereby maximizing thermal efficiency compared to the case where the second heat exchange unit 200 is not provided. can do. In addition, through the third heat exchange unit 300 for cooling the first refrigerant and condensation unit 230 circulating along the second heat exchange unit 200, the second heat exchange unit 200 is unintentionally overheated, causing fluid A decrease in heat exchange efficiency can be prevented in advance.

Figure 4 is a diagram showing the entire second heat exchange unit 200 according to another embodiment of the present invention, and Figure 6 is a diagram showing the first heat exchange unit 100 to the third heat exchange unit (100) according to another embodiment of the present invention. 300).

The second heat exchange unit 200 according to another embodiment of the present invention further includes a separation unit 260 connected to the compression unit 220 and the condensation unit 230.

The separation unit 260 is configured to remove oil contained in the second refrigerant. In detail, the separation unit 260 separates the second refrigerant, which is mixed with the refrigeration oil and moves within the compression unit 220, from the refrigeration oil during the circulation of the second refrigerant. For this purpose, the separation unit 260 is located between the compression unit 220 and the condensation unit 230 and separates the refrigerant from the second refrigerant moving from the compression unit 220 to the condensation unit 230. It is provided in the form of an oil separator. By providing the separator 260, the refrigerating oil contained in the second refrigerant can be effectively removed, significantly reducing the amount of oil sludge circulating along the second heat exchanger 200 and ensuring smooth operation of each component. can be maintained.

As another more preferred embodiment, a pressure increase prevention unit 270 located between the condensing unit 230 and the pressure adjusting unit 250 may be further included. The pressure increase prevention unit 270 is a component that prevents the pulsation phenomenon caused by the second refrigerant condensed and compressed in the condensation unit 230 and the compression unit 220. In detail, the second refrigerant is stored in the condensation unit 230. ) and reduce periodic fluctuations in pressure discharged from the compression unit 220. Through this, durability can be maximized by preventing each component in the second heat exchange unit 200 from being subjected to excessive pressure during the movement of the second refrigerant.

Meanwhile, the third heat exchange unit 300 according to another embodiment of the present invention may be designed to be water-cooled or air-cooled in the same manner as in one embodiment.

Although the above-described present invention has been described with reference to preferred embodiments, these are only examples, and various modifications and equivalent other embodiments may be possible by those skilled in the art. Accordingly, the scope of the present invention is not limited by the above-described embodiments and the attached drawings.

Claims (6)

A work unit 400 that manufactures an object;
A first heat exchange unit (100) connected to the working unit (400), which heats fluid and inputs and recovers fluid from the working unit (400); and
A second heat exchange unit 200 is connected to the first heat exchange unit 100 and cools the fluid using a first refrigerant,
In the first heat exchange unit 100,
A temperature maintenance unit 120 connected to the working unit 400 and heating the fluid and injecting it into the working unit 400;
A vacuum unit 130 connected to the working unit 400 and vacuum-sucking the fluid within the working unit 400;
A measuring unit 150 connected to the vacuum unit 130 and measuring the pressure within the vacuum unit 130;
A first circulation unit 160 that is connected to the vacuum unit 130 and the temperature maintenance unit 120 and moves the fluid in the vacuum unit 130 to the temperature maintenance unit 120; and
A second circulation unit 170 is connected to the temperature maintenance unit 120 and the second heat exchange unit 200 and moves the fluid to the second heat exchange unit 200,
It is connected to the temperature maintenance unit 120 and the vacuum unit 130, and further includes a vacuum opening/closing unit 140 that opens and closes to move the fluid in the vacuum unit 130 to the first circulation unit 160. A vacuum suction chiller system characterized in that.
According to paragraph 1,
A vacuum suction chiller system connected to the temperature maintenance unit 120 and further comprising a heating unit 121 that raises the temperature of the fluid to a predetermined reference temperature.
delete delete delete According to paragraph 1,
A vacuum suction chiller system further comprising a third heat exchange unit (300) connected to the second heat exchange unit (200) and cooling the first refrigerant using a second refrigerant.