KR20190105920A - Apparatus for manufacturing casing of heat radiating device in which a refrigerant pipe is embedded, and a manufacturing method the same - Google Patents

Abstract

The present invention relates to an apparatus and a method for manufacturing a casing of a heat radiating device in which a refrigerant pipe is embedded, the apparatus comprising: a casting mold which has a cavity corresponding to a casing body to mold the casing body by molten metal supplied to the inside through a molten metal path and has a refrigerant pipe installed on the inside thereof such that both ends of the refrigerant pipe are exposed to the outside, thereby allowing the refrigerant pipe to be embedded in the casing body; a cooling and supplying unit cooling and supplying air; a heating and supplying unit heating and supplying air; a supply line which allows cooling air and heating air to be respectively and selectively supplied from the cooling and supplying unit and the heating and supplying unit and has first and second branch ends branching to both sides at an end thereof and respectively and detachably connected to both ends of the refrigerant pipe, wherein the first and second branch ends respectively have first and second control valves; a first discharge line branching from a rear end of the first control valve at the first branch end and having a third control valve; a second discharge line branching from a rear end of the second control valve at the second branch end and having a fourth control valve; an air transferring unit allowing the air to be supplied to the refrigerant pipe; and a control unit alternately changing air supply and discharge sides for the refrigerant pipe by switching between the operations of air supply through the first branch end and air discharge through the second discharge line and the operations of air supply through the second branch end and air discharge through the first discharge line every first set time by control of the first to fourth control valves.

Description

Apparatus for manufacturing casing of heat radiating device in which a refrigerant pipe is embedded, and a manufacturing method the same}

The present invention relates to a casing manufacturing apparatus and a manufacturing method of a heat dissipation device in which a refrigerant pipe is embedded, and more particularly, to produce a product that is high quality and independent of the shape of the refrigerant pipe, due to high temperature during gravity casting for manufacturing. Heat dissipation device in which the refrigerant pipe is embedded to prevent the deformation of the refrigerant pipe or to damage the melt, and in particular, to prevent the degradation of quality such as gaps between the refrigerant pipe and the casing body due to temperature variation of the refrigerant pipe. It relates to a casing manufacturing apparatus and a manufacturing method.

In general, various aluminum products, including casings such as electric vehicle DC-DC converters and inverters, are manufactured by a continuous casting method by die casting or gravity casting in order to produce high-precision products by mass production.

On the other hand, products that generate heat, such as DC-DC converters or inverters, so that the refrigerant is supplied to the body by assembling the needle after the hole processing for fastening the nipple to the body, in this case, the production cost of the nipple occurs, There is a problem that the processing cost of the fastening portion, the assembly cost of the body and the nipple occurs, and there is always a concern of a poor leakage of the fastening portion of the nipple after assembly.

In addition, with reference to the accompanying drawings, a prior art related to cooling for a product that generates heat, such as a DC-DC converter or an inverter is as follows.

1 is a perspective view illustrating a casing of a heat dissipation device having a cooling water flow path according to the related art.

Referring to FIG. 1, a casing 10 of a heat dissipation device having a conventional cooling water flow path has a casing body 11 constituting a heat dissipation device and a groove 12a formed on one exposed surface of the casing body 11. A partition wall 12b for partitioning as a flow path is formed vertically at 12a, and a water supply port 12c for supplying cooling water to the groove portion 12a and a water extraction port 12d for discharging the cooling water passing through the groove portion 12a. Is installed so as to block the open side of the channel portion 12 and the groove portion 12a, which are respectively provided so as to protrude from the casing body 11, the cover 13 so that the flow path portion 12 is formed as a circulating flow path of the cooling water. It may include.

However, such a prior art, firstly, in order for the flow path portion 12 to be formed as a flow path, the cover 13 is essentially required, so that the cost and effort for the provision, installation and maintenance of the cover 13 are increased. Secondly, second, the casing body 11 and the cover 13 must be processed to maintain the airtightness of the joints, and the joints, such as sealing materials, gaskets or bolts necessary for the installation, installation and maintenance of a large cost And third, additional costs for inspection and airtightness of leakage due to casting defects are generated. Fourth, the problem of preventing the smooth circulation of the coolant is difficult due to the increase in the coolant flow rate and the possibility of congestion. I had.

In this way, in order to secure the internal passage in the casing body, if it is to be manufactured by die casting, the two upper and lower products of the casing body and the cover are manufactured by die casting, and O-rings or gaskets are inserted, and the two products are screwed or bolted. By assembling and blocking the leakage of the passing material, such as cooling water, oil or air, which causes many problems as described above.

In order to solve this problem, the applicant of the present invention has derived the "casing of the heat dissipation device in which the refrigerant pipe is embedded, its manufacturing apparatus and manufacturing method" of Korean Patent No. 10-1825887, as the manufacturing method, Installing the refrigerant pipe to expose both ends to the outside in a casting mold forming a cavity corresponding to a casing body; Connecting a supply line to supply a refrigerant to one end of the refrigerant pipe and connecting a discharge line to discharge the refrigerant to the other end of the refrigerant pipe; Supplying a coolant to the supply line by a coolant supply unit to cool the coolant pipe and to inject molten metal into the casting mold of the casting mold, thereby forming the casing body by the cavity; And maintaining the pressure of the coolant supplied to the coolant pipe by a pressure control unit, and separating the casing body from the casting mold by finishing the gravity casting. It is embedded in the casing body.

This prior art has the advantages of solving the above problems, but has the following problems.

First, by supplying the refrigerant to the refrigerant pipe in one direction only through the supply line, when casting due to the temperature deviation between the side where the refrigerant is introduced into the refrigerant pipe and the discharge side, the gap between the refrigerant pipe and the casing body is reduced. Occurred, and thus caused a decrease in cooling efficiency of the refrigerant pipe during use.

Second, the temperature of the refrigerant discharged side in the refrigerant pipe is continuously raised, which causes the deformation of the refrigerant pipe, thereby causing product defects.

Third, since the heating unit and the cooling unit are arranged in series, when the operation of the heating unit and the cooling unit is switched, the heating and cooling units are affected by each other due to the remaining heat or cold, which has a problem in that the durability and the initial temperature control are difficult.

Fourth, in the configuration of the pressure regulator, because a stable and fine configuration for adjusting the pressure is not presented, there is a problem that it is difficult to improve the quality of the product by lowering the cooling efficiency by lowering the reliability of the supply pressure of the refrigerant.

In order to solve the above problems of the prior art, the present invention by switching the direction in which the refrigerant is supplied to the refrigerant pipe for embedding in the casing of the heat dissipation device in the casting process according to a predetermined condition, the refrigerant is introduced into the refrigerant pipe By reducing the temperature deviation between the side and the discharged side, to improve the adhesion between the refrigerant pipe and the casing body, thereby increasing the cooling efficiency of the refrigerant pipe, and to prevent the temperature of the refrigerant pipe continuously rises, It minimizes deformation to reduce product defects, and minimizes the influence of each other due to remaining heat or cold when switching the operation of the heating and cooling parts, thereby improving initial durability and facilitating initial temperature control. By presenting a configuration for pressure regulation, Increasing the property aims to allow improvement in the quality of products due to the increased cooling efficiency.

In order to solve the problems as described above, according to an aspect of the present invention, to form a cavity corresponding to the casing body by forming the casing body by the molten metal supplied inward through the water run, the refrigerant pipe is both ends It is installed on the inside to expose the outside, the casting mold to allow the refrigerant pipe is embedded in the casing body after gravity casting; A cooling supply unit cooling and supplying air; A heating supply unit for heating and supplying air; Cooling air and heating air are selectively supplied from the cooling supply unit and the heating supply unit, respectively, and each of the first and second branch ends branched at both ends of the cooling supply unit and the heating supply unit is detachably connected to both ends of the refrigerant pipe, respectively, A supply line having first and second control valves installed at each of the first and second branch ends; A first discharge line branched from a rear end of the first control valve at the first branch end, and having a third control valve installed; A second discharge line branched from a rear end of the second control valve at the second branch end and provided with a fourth control valve; An air transfer unit to supply air to the refrigerant pipe; And operation of supplying air through the first branch end and exhausting air through the second discharge line every first set time by controlling the first to fourth control valves, and air through the second branch end. A casing of the heat dissipation device in which the refrigerant pipe is embedded, comprising: a control unit which alternately switches supply and discharge of air through the first discharge line to each other, thereby alternately changing the supply side and the discharge side of the air to the refrigerant pipe. A manufacturing apparatus is provided.

A first pressure regulator configured to respectively install a first regulator and a fifth control valve to adjust the first set pressure to the supply line; And a second pressure regulator configured to respectively install a second regulator and a sixth control valve, each of which is adjusted to a second set pressure in a bypass line installed in the supply line to bypass the first pressure regulator. The controller may control the air supply pressure to be adjusted by selectively opening the fifth and sixth control valves.

The air transfer unit may be made of any one of a blower, a compressor, or a compressed air storage container installed in the supply line.

The air transfer unit may be a vacuum pump installed on the first and second discharge line.

A first temperature sensor and a second temperature sensor installed at the side adjacent to the end of the refrigerant pipe at each of the first and second branch ends, wherein the control unit comprises the first and second temperature sensors before the first set time elapses. When the measured value deviation of each of the second temperature sensors is out of a predetermined range, the supply side and the outlet side of the air to the refrigerant pipe are switched, and the first set time is initialized to newly count, and the second set after the change. When the rate of decrease of the measured value deviation over time is less than a set value, the fifth and sixth control valves may be controlled to increase the air supply pressure or to maintain a large air pressure, respectively.

According to another aspect of the present invention, a manufacturing method using a casing manufacturing apparatus of the heat dissipation device in which the refrigerant pipe is buried according to an aspect of the present invention, both ends of the refrigerant pipe inside the casting mold to form a cavity corresponding to the casing body Installing to expose the outside; Connecting first and second branch ends of the supply line to supply refrigerant to both ends of the refrigerant pipe, respectively; The second discharge is connected to the second branch end by supplying the cooling air or heating air supplied from one of the cooling supply unit or the heating supply unit through the supply line to the refrigerant pipe through the first branch end of the supply line. Controlling the first to fourth control valves to be discharged through the line; Injecting molten metal into the molten metal of the casting mold, thereby forming the casing body by the cavity; And after the first set time passes, by the control of the first to fourth control valves, the air supply through the first branch end and the air discharge through the second discharge line every first set time; And alternately changing the supply and discharge sides of the air to the refrigerant pipe by switching the operation of the air supply through the second branch end and the air discharge through the first discharge line to each other. When the casing body is separated from the casting mold by finishing gravity casting, there is provided a casing manufacturing method of a heat dissipation device in which a refrigerant pipe is embedded so that the refrigerant pipe is embedded inside the casing body.

The first and second branch ends are connected to both ends of the refrigerant pipe, respectively, and then the fifth and sixth controls the pressures of the cooling air or the heating air supplied from either the cooling supply part or the heating supply part through the supply line. The control may further include adjusting to the first or second regulator by the control of the valve.

The air supplied through the supply line may be transported to be supplied by any one of a blower, a compressor, or a compressed air storage container installed in the supply line.

The air supplied through the supply line may be transported to be supplied by the vacuum pumps installed on the first and second discharge lines.

In the case where the measured value deviation of each of the first and second temperature sensors respectively installed on the side adjacent to the end of the refrigerant pipe at each of the first and second branch ends before the first set time elapses is out of a predetermined range, Switching the supply side and the discharge side of the air to the refrigerant pipe, and initializing the first set time and counting a new count; And if the rate of decrease of the measured value deviation during the second set time after the switching is smaller than the set value, it is determined whether the air supply pressure is set to a large one of the first and second regulators, and if it is set to a large value, If it is set to a small step of controlling the fifth and sixth control valve to be set to a larger; may further include.

According to the casing manufacturing apparatus and manufacturing method of the heat dissipation device in which the refrigerant pipe is buried according to the present invention, by switching the direction in which the refrigerant is supplied to the refrigerant pipe for embedding in the casing of the heat dissipation device in accordance with a predetermined condition, the refrigerant pipe By reducing the temperature difference between the side where the refrigerant is introduced and the discharge side in the inside, it is possible to increase the adhesion between the refrigerant pipe and the casing body, thereby increasing the cooling efficiency of the refrigerant pipe, the temperature of the refrigerant pipe continuously rises By preventing the flow of the refrigerant pipe, the deformation of the refrigerant pipe can be minimized to reduce product defects, and when the operation of the heating unit and the cooling unit is switched, the influence of each other due to the remaining heat or cold is minimized, thereby improving the durability and initial temperature. Easy to adjust, stable and fine pressure regulator By providing and increasing the reliability of the supply pressure of the coolant to allow improvement in the quality of products due to the increased cooling efficiency.

1 is a perspective view illustrating a casing of a heat dissipation device having a cooling water flow path according to the related art.
2 is a perspective view illustrating a refrigerant pipe for embedding a casing according to an embodiment of the present invention.
3 is a perspective view illustrating a casing of a heat dissipation device in which a refrigerant pipe is embedded according to an embodiment of the present invention.
4 is a cross-sectional view taken along line AA ′ of FIG. 3.
5 is a block diagram illustrating an apparatus for manufacturing a casing of a heat dissipation device in which a refrigerant pipe is embedded according to an embodiment of the present invention.
6 is a block diagram illustrating a casing manufacturing apparatus of a heat dissipation device in which a refrigerant pipe is embedded according to another embodiment of the present invention.
7 is a flowchart illustrating a casing manufacturing method of a heat dissipation device in which a refrigerant pipe is embedded according to an embodiment of the present invention.

Since the present invention may have various embodiments by various changes, specific embodiments will be described by way of example in the drawings. In addition, it is to be understood that the present invention is not limited to these specific embodiments, but includes all modifications, equivalents, and substitutes included in the technical idea of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, and the same reference numerals are assigned to the same or corresponding components regardless of the reference numerals, and redundant description thereof will be omitted. Shall be.

2 is a perspective view illustrating a refrigerant pipe for embedding a casing according to an embodiment of the present invention.

Referring to Figure 2, the casing buried refrigerant pipe 120 according to an embodiment of the present invention is an example of the refrigerant pipe used in the casing manufacturing apparatus and manufacturing method of the heat dissipation device is embedded with the refrigerant pipe, The pipe member 121, the bending part 122, and the protrusion 123 may be included.

The pipe member 121 is embedded in the casing body 110 manufactured by gravity casting in a heat dissipation device that requires cooling by the generation of heat to provide a moving passage of the refrigerant, and a water supply stage 121a for supplying and discharging the refrigerant. And outlet means 121b are provided at both ends, respectively. Here, the coolant may be, for example, cooling water, and the coolant is not necessarily limited thereto, and various fluids for transmitting cold air may be used. In addition, a heat dissipation device that requires cooling by generating heat is a device that generates heat energy when used for a predetermined purpose rather than a device for heat dissipation. For example, the heat dissipation device may be a DC-DC converter or an inverter for an electric vehicle. It may be a variety of heat dissipating device. The pipe member 121 may be formed of, for example, a hollow tube made of metal such as aluminum, iron, or an alloy thereof. In this embodiment, the water supply end 121a and the discharge means 121b protrude from the casing body 110 to one side. It is formed, but not necessarily limited to, it is exposed to the outside from the casing body 110 to be connected to each of the pipes for supply and discharge of the refrigerant.

The pipe member 121 has a boundary protrusion 124 along the outer circumferential surface of each of the water supply end 121a and the discharge means 121b so as to show a boundary between the insertion portion of the casing body 110 and the portion protruding from the casing body 110. Can be formed. Therefore, the boundary protrusion 124 to accurately recognize or align the portion inserted into the casing body 110, that is, the boundary of gravity casting by the tubular member 121, the boundary protrusion 124 is the casing body 110 By acting as a latch on, the refrigerant pipe 120 and the casing body 110 may be advantageous in maintaining an integrated state during expansion or contraction due to heat.

The pipe member 121 has a fitting portion 126 partially expanded in diameter by a projection so as to forcibly fit a pipe for supplying and discharging the refrigerant to the outer circumferential surface of each of the feed end 121a and the discharge means 121b. Can be.

The bending part 122 may be formed by bending to change the flow direction of the coolant in the pipe member 121. The concentrating part 125 positioned at a portion for cooling concentration in the casing body 110 as in the present embodiment. Can be formed in the tube member 121 by a plurality of bending. Here, the concentrator 125 shows, as an example, that it has an approximately "c" shape as in the present embodiment, but this is merely an example and may have various other forms.

The protrusion 123 may be formed along the longitudinal direction for reinforcement while increasing the joint area with the casing body 110 in the pipe member 121. In addition, the protrusion 123 may have a semi-circular cross section, for example, but is not limited thereto, and may include not only polygons including triangles and squares, but also various shapes including curvatures such as round or oval, or a combination of curvature and straight lines. It may have a cross section of. The protrusion 123 may contribute to the deformation prevention of the refrigerant pipe 120 by load or pressure dispersion, to improve the adhesion to the casing body 110, the adhesion performance, to increase the aging hardening, and to make excellent manufacturing work And, it is easy to arrange at a specific heat dissipation site. One or more of the protrusions 123 may be formed on the side surface of the pipe member 121. By increasing the reinforcing force to the bonding force by the protrusion 123 it is advantageous to maintain a stable durability. That is, after the refrigerant pipe 120 is installed in the mold for forming the casing body 110, the refrigerant pipe 120 is deformed by high pressure when the casing body 110 is formed by gravity casting while closing the mold. In this case, as in the present embodiment, the refrigerant pipe 120 may be greatly enhanced in strength by the protrusion 123 to prevent deformation.

3 is a perspective view illustrating a casing of a heat dissipation device in which a refrigerant pipe is embedded according to an embodiment of the present invention, and FIG. 4 is a cross-sectional view taken along line AA ′ of FIG. 3.

3 and 4, the casing 100 of the heat dissipation device in which the refrigerant pipe is buried according to an embodiment of the present invention by the casing manufacturing apparatus and manufacturing method of the heat dissipation device in which the refrigerant pipe is buried according to the present invention. As an example of the casing to be manufactured, the casing body 110 and the refrigerant pipe 120 may be included.

The casing body 110 is provided in a heat dissipation device that requires cooling by generation of heat, and is manufactured by gravity casting, and forms a part of the heat dissipation device, and a part of the heat dissipation device regardless of a name including a cover, a block, a frame, and the like. Applicable to all components that make up

The casing body 110 may be formed such that the refrigerant pipe 120 is embedded by gravity casting, for example, with the refrigerant pipe 120 positioned in the mold. In order to insert the refrigerant pipe 120 into the casing body 110, the refrigerant pipe 120, which serves as a core in a state in which the casting mold is open, is fixed in the casting mold, and then the casting mold is closed. Gravity casting is performed after this time. At this time, in order to prevent separation of the refrigerant pipe 120, a minimum structure is installed in a casting mold around the refrigerant pipe 120 so that the refrigerant pipe 120 is firmly fixed. To be able. In addition, the refrigerant pipe 120 is installed in the casting mold during the gravity casting process to provide a path for the refrigerant to pass through to prevent thermal damage, thereby preventing deformation or melt damage due to the temperature of the gravity casting. Therefore, the refrigerant pipe 120 is inserted into the casing body 110 when the gravity casting is formed to be integrated into the receiving portion 111 corresponding to the space for accommodating the casing body 110, thereby forming a casing body. By maximizing the contact efficiency with the 110, the heat exchange efficiency with the casing body 110 can be increased.

As shown in FIG. 4, the casing main body 110 has a coating thickness from the outer side of the refrigerant pipe 120 to a thickness smaller than that of the inner side, and the side surface of the refrigerant pipe 120 protrudes from the outer side. As a result, the coating part 112 formed at the outside to fill the refrigerant pipe 120 protrudes to correspond to the side shape of the refrigerant pipe 120 to form a curvature, thereby forming curvature relative to a plane. The contact area with the outside air can be enlarged.

The casing body 110 may have, for example, a mounting portion 115 for assembling the components of the heat dissipation device on the opposite side of the one side in which the refrigerant pipe 120 is embedded in a groove or space shape.

The casing body 110 may include a protrusion 114 in which portions respectively covering both ends of the refrigerant pipe 120 protrude from the side portion. Therefore, the protrusion 114 may protrude to surround each of both ends of the refrigerant pipe 120 to guide the fixing force of the water supply stage 121 and the outlet means 122 provided at both ends of the refrigerant pipe 120. .

The coolant pipe 120 is embedded in the casing main body 110 so that the water supply stage 121a and the outlet means 121b for supplying and discharging the coolant to both ends of the pipe member 121 providing the moving passage of the coolant casing main body. Exposed from 110, the bending part 122 is formed by bending to change the flow direction of the refrigerant in the pipe member 121, reinforcement while increasing the junction area with the casing body 110 in the pipe member 121 For this purpose, the protrusion 123 may be formed along the longitudinal direction.

The refrigerant pipe 120 may be formed by a plurality of bending parts of the concentrator 125 located at a portion for cooling concentration in the casing body 110. Here, the tubular member 121 is a boundary protrusion along the outer circumferential surface of each of the water supply end 121a and the discharge means 121b so as to show a boundary between the insertion portion of the casing body 110 and the portion protruding from the casing body 110. 124 can be formed. In addition, the refrigerant pipe 120 may be formed with one or a plurality of protrusions 123 on the side. Since the coolant pipe 120 is the same as the casing buried coolant pipe 120 according to an embodiment of the present invention, in addition to the above, the description of the coolant pipe 120 for buried the casing according to an embodiment of the present invention I will replace it.

Refrigerant pipe 120 may be formed on the thermal deformation reduction layer (127, 128) by plating, coating or painting to reduce the thermal deformation in the gravity casting process on any one or both of the inner surface and the outer surface.

The heat deformation reducing layers 127 and 128 may not withstand the temperature of the melt during the gravity casting process when the refrigerant pipe 120 is made of aluminum (Al) or copper (Cu) to improve processing and thermal conductivity, such as bending. In order to prevent this, a refrigerant such as air is supplied to the inside during gravity casting. In order to increase heat resistance, various heat and strength, including heat-resistant materials such as cobalt, iron, and silicon, are prevented. The reinforcing material may be formed on the inner side or the outer side of the refrigerant pipe 120 by plating, coating or painting, and a suitable forming method may be selected according to the heat resistant material. In addition, the heat deformation reducing layers 127 and 128 are formed on the inner side as well as the outer side of the refrigerant pipe 120 in this embodiment.

5 is a block diagram illustrating an apparatus for manufacturing a casing of a heat dissipation device in which a refrigerant pipe is embedded according to an embodiment of the present invention.

Referring to FIG. 5, the casing manufacturing apparatus 200 of a heat dissipation device in which a refrigerant pipe is embedded according to an embodiment of the present invention includes a casting mold 210, a cooling supply unit 220, a heating supply unit 230, and a supply line ( 240, a first discharge line 250, a second discharge line 260, an air transfer unit 270, and a controller 310 may be included.

The casting mold 210 forms a cavity 211 corresponding to the casing main body 110 to mold the casing main body 110 by molten metal supplied inwardly through a ballway (not shown), and the refrigerant pipe 120 ) Is installed inside to expose both ends to the outside, so that the refrigerant pipe 120 is embedded in the casing body 110 after gravity casting. In addition, the casting mold 210 may be composed of a plurality of divided bodies are joined to the top and bottom or left and right for opening and closing, the cavity 211 is the covering portion 112, the protrusion 114, the mounting portion of the casing body 110 ( 115) has a structure space for forming the back and the like. In addition, the casting mold 210 may be installed on the main body (not shown) to support itself, or move up and down or left and right or open as needed.

The cooling supply unit 220 cools and supplies the air. The cooling supply unit 220 may be installed to be parallel to the heating supply unit 230 so that the cooling air and the heating air are selectively supplied together with the heating supply unit 230. In the cooling supply unit 220, for example, a cooler 222 is installed in the cooling line 221, and the first opening / closing valve 223 such as a ball valve may be installed in the cooling line 221 to open and close the cooling line 221. Here, the cooler 222 cools the coolant using a cooling cycle, cools the coolant using a cooling unit such as a thermoelectric element, or various other coolers.

The heating supply unit 230 supplies the air by heating it. For example, a heater 232 is installed in the heating line 231, and the heating line 231 is configured to open and close the second opening / closing valve 233 such as a ball valve. Can be installed. Here, the heater 232 may be used a variety of heating devices to heat the refrigerant, including the electric heater or steam generator. The heating supply unit 230 may be used when a refrigerant having a temperature higher than room temperature is required as a gravity casting process.

The temperature of the refrigerant supplied by the cooling supply unit 220 and the heating supply unit 230 may be determined to be in the range of 0 ~ 80 ℃, where the injection temperature of the refrigerant is less than 0 ℃, due to excessive cooling by the refrigerant Due to uneconomical, when the injection temperature of the refrigerant is higher than 80 ℃, it may cause deformation of the refrigerant pipe 120 due to lack of cooling.

The supply line 240 is selectively supplied with cooling air and heating air from the cooling supply unit 220 and the heating supply unit 230 by respective driving and opening / closing operations of the first and second opening / closing valves 223 and 233, respectively. Each of the first and second branch ends 241 and 242 branched to both sides of the refrigerant pipe 120 is detachably connected to both ends of the refrigerant pipe 120, and the first and second control points are respectively connected to the first and second branch ends 241 and 242. Valves 243 and 244 may be installed respectively. The first and second branch ends 241 and 242 are fitted to the fitting protrusions 126 formed at both ends of the refrigerant pipe 120 so that the sockets 245 and 246 are connected to both ends of the refrigerant pipe 120, respectively. It may be provided in, for example, it may be fitted to the fitting protrusion 126.

The first discharge line 250 branches from the rear end of the first control valve 243 at the first branch end 241, and the third control valve 251 is installed.

The second discharge line 260 is branched from the rear end of the second control valve 244 at the second branch end 242, and the fourth control valve 262 is installed.

The air transfer unit 270 allows air to be supplied to the refrigerant pipe 120. For example, the air transfer unit 270 may be formed of any one of a blower, a compressor, or a compressed air storage container installed in the supply line 240 as in the present embodiment.

The control unit 310 operates the air supply through the first branch stage 241 and the air discharge through the second discharge line 260 at every first set time under the control of the first to fourth control valves 243, 244, 251 and 261. And, by switching the operation of the air supply through the second branch end 242 and the air discharge through the first discharge line 250 mutually, the supply and discharge side of the air to the refrigerant pipe 120 is alternately changed To control it. In this case, the first setting time may be 15 to 20 seconds. If the first setting time is less than 15 seconds, it may hinder the smooth transfer of the refrigerant due to frequent changes. If the first setting time is more than 20 seconds, the cooling may not be performed properly.

The casing manufacturing apparatus 200 of the heat dissipation device in which the refrigerant pipe according to the embodiment of the present invention may further include first and second pressure regulating units 280 and 290. Here, the first pressure regulating unit 280 may be provided with a first regulator 281 and a fifth control valve 282 to adjust to the first set pressure in the supply line 240, respectively. In addition, the second pressure regulator 290 adjusts the second regulator 291 to the second set pressure in the bypass line 294 installed in the supply line 240 to bypass the first pressure regulator 280. And a sixth control valve 292 may be installed, respectively. The first and second pressure regulators 280 and 290 may include third and fourth on / off valves 283 and 293, such as ball valves, for manual opening and closing for the passage and blocking of air, respectively. In this case, the controller 310 may control to adjust the supply pressure of air by selectively opening the fifth and sixth control valves 282 and 292. Here, the first set pressure may be 0.01 ~ 1kgf / ㎠, the second set pressure may be 1 ~ 2kgf / ㎠. Therefore, the set pressure can be easily and easily changed selectively and finely and stably within the range of 0.01 ~ 2kgf / ㎠, and due to this pressure range, the refrigerant is optimal for the refrigerant pipe 120 It can be supplied to have a cooling efficiency.

The casing manufacturing apparatus 200 of the heat dissipation device in which the refrigerant pipe is embedded according to an embodiment of the present invention is installed at the side adjacent to the end of the refrigerant pipe 120 at each of the first and second branch ends 241 and 242, respectively. The first and second temperature sensors 321 and 322 may be included. If the measured value deviation of each of the first and second temperature sensors 321 and 322 is out of a predetermined range before the first set time elapses, the controller 310 switches the supply and discharge sides of the air to the refrigerant pipe 120. And the first set time is initialized to count a new one, and if the rate of decrease of the measured value deviation is smaller than the set value during the second set time after the switching, the fifth and the second to increase the air supply pressure or maintain a large air pressure. 6 Control valves 282 and 292 can be controlled respectively.

The casing manufacturing apparatus 200 of the heat dissipation device in which the refrigerant pipe is embedded according to an embodiment of the present invention may be provided with an operation unit 332 for selecting various operation conditions, setting process conditions such as setting time or setting frequency or setting value. The display unit 333 may be provided to display the operation state and various information to the outside, and a memory unit (not shown) may be provided for storing data or programs necessary for operation, and the operation unit 332 By setting the operation time by, for example, within the range of 1 ~ 300 seconds, a timer 331 may be provided to count this. Therefore, when the setting time is input by the operation unit 332, the control unit 310 counts the setting time through the timer 331, and performs control of the related component devices to operate for the setting time.

6 is a block diagram illustrating a casing manufacturing apparatus of a heat dissipation device in which a refrigerant pipe is embedded according to another embodiment of the present invention.

Referring to FIG. 6, the casing manufacturing apparatus 300 of the heat dissipation device in which the refrigerant pipe is embedded according to another embodiment of the present invention is a refrigerant according to an embodiment of the present invention except for the configuration of the air transfer unit 340. Since the pipe is the same as the casing manufacturing apparatus 200 of the heat dissipation device, the description of the components having the same name will be omitted and the description will be mainly focused on the difference.

The air transfer part 340 may be a vacuum pump installed on the first and second discharge lines 250 and 260 as in this embodiment. Therefore, the refrigerant may be supplied and discharged to the refrigerant pipe 230 by using suction force. For example, the air transfer unit 340 may be installed in the third discharge line 341 to which the first and second discharge lines 250 and 260 are joined to each other. Alternatively, the first and second discharge lines 250 and 260 may be installed. Of course, it can be installed in.

7 is a flowchart illustrating a casing manufacturing method of a heat dissipation device in which a refrigerant pipe is buried according to an embodiment of the present invention, and a casing manufacturing apparatus of the heat dissipation device in which the refrigerant pipe is buried according to an embodiment of the present invention ( 200) will be described mainly.

Referring to FIG. 7, in the casing manufacturing method of a heat dissipation device in which a refrigerant pipe is embedded according to an embodiment of the present invention, first, an inner side of a casting mold 210 forming a cavity 211 corresponding to the casing body 110 is provided. The refrigerant pipe 120 is installed to expose both ends to the outside (S11). Therefore, the refrigerant pipe 120 is installed in the cavity 211 of the casting mold 210. At this time, the refrigerant pipe 120 may be fixed at a predetermined position by the frame or the structure of the casting mold 210, if such a difficult to fix, using a separate fixing member provided on the outside of the casting mold (210) You can also

After the fixing of the refrigerant pipe 120, the first and second branch ends 241 and 242 of the supply line 240 are connected to supply refrigerant to both ends of the refrigerant pipe 120 (S12). In this case, the first and second branch ends 241 and 242 may be detachably connected to both ends of the refrigerant pipe 120 using the sockets 245 and 246, respectively.

First and second branch ends 241 and 242 are respectively connected to both ends of the refrigerant pipe 120 (S12), and then supplied from one of the cooling supply unit 220 or the heating supply unit 230 through the supply line 240. The pressure of the cooling air or heating air may be adjusted to the first or second regulators 281 and 291 by the control of the fifth and sixth control valves 282 and 292 (S13).

After the connection of the supply line 240 and the refrigerant pipe 120 and the air pressure control are completed, the cooling air or heating supplied from either the cooling supply unit 220 or the heating supply unit 230 through the supply line 240. The control unit 310 to supply air to the refrigerant pipe 120 through the first branch end 241 of the supply line 240 to be discharged through the second discharge line 260 connected to the second branch end 242. ) Controls the first to fourth control valves 243, 244, 251 and 261. For example, the first and fourth control valves 243 and 261 are opened, and the second and third control valves 244 and 251 are blocked (S14). . On the other hand, the air supplied through the supply line 240 is to be transported to be supplied by the air transfer unit 270 corresponding to any one of the blower, compressor or compressed air storage container installed in the supply line 240 as in this embodiment Can be. In addition, the air supplied through the supply line 240 may be transported to be supplied by the air transfer unit 340 corresponding to the vacuum pumps installed on the first and second discharge lines 241 and 242 as another example.

Then, by injecting molten metal into the molten metal (not shown) of the casting mold 210, the casing body 110 is molded by the cavity 211 (S15).

The controller 310 opens the first and fourth control valves 243 and 261 at every first set time by controlling the first to fourth control valves 243, 244, 251 and 261 after the first set time has elapsed (S16). In addition, the operation of the air supply through the first branch stage 241 and the air discharge through the second discharge line 260 by blocking the second and third control valves (244, 251), and the first and fourth In addition to shutting off the control valves 243 and 261, the air supply through the second branch stage 242 and the air discharge through the first discharge line 250 by opening the second and third control valves 244 and 251. By switching the operations mutually, the supply and discharge sides of the air to the refrigerant pipe 120 are alternately changed (S17).

Before the first set time elapses (S16), each of the first and second temperature sensors 321 and 322 which are installed on the side adjacent to the end of the refrigerant pipe 120 at the first and second branch ends 241 and 242, respectively. If the value deviation is out of the predetermined range (S18), the supply and discharge side of the air to the refrigerant pipe 120 is switched, and the first set time is initialized to newly count (S17). Herein, the predetermined range may be a range of temperature deviation between the first and second temperature sensors 32 and 322, which may cause product defects or quality deterioration due to temperature nonuniformity of the refrigerant pipe 120.

After switching between supply and discharge sides of the air to the refrigerant pipe 120 (S17), when the rate of decrease of the measured value deviation during the second set time is smaller than the set value, the air is supplied from the first and second regulators 281 and 291. It is determined whether the pressure is set to a large (S20), and if it is set to a large (S21), if it is set to a small (S22) to control the fifth and sixth control valve to be set to a large. Here, the first regulator 281 may have a first set pressure of 0.01 ~ 1kgf / ㎠, the second regulator 291 may have a second set pressure of 1 ~ 2kgf / ㎠. In addition, the second set time has a shorter time than the first set time, for example, 5 to 10 seconds.

When the third set time elapses (S23), the supply and switching of the refrigerant are stopped, where the third set time is a time that does not require the supply of the refrigerant to the refrigerant pipe 120 after the injection of the column, Different types and specifications may be determined.

On the other hand, when the gravity casting is finished, when the casing body 110 is separated from the casting mold 210, the refrigerant pipe 120 is embedded in the casing body 110.

According to the casing manufacturing apparatus and manufacturing method of the heat dissipation device in which the refrigerant pipe is embedded according to the present invention, by switching the direction in which the refrigerant is supplied to the refrigerant pipe for embedding in the casing of the heat dissipation device in accordance with a predetermined condition, By reducing the temperature deviation between the side in which the refrigerant is introduced into the refrigerant pipe and the discharge side, the adhesion between the refrigerant pipe and the casing body can be increased, thereby increasing the cooling efficiency of the refrigerant pipe.

In addition, according to the present invention, by blocking the temperature of the refrigerant pipe continuously rising, it is possible to minimize the deformation of the refrigerant pipe to reduce product defects.

According to the present invention, when the operation of the heating unit and the cooling unit is switched, the influence of each other due to the remaining heat or cold is minimized, thereby improving initial durability and facilitating initial temperature control.

In addition, according to the present invention, by presenting a configuration for stable and fine pressure control, it is possible to improve the quality of the product by increasing the cooling efficiency by increasing the reliability of the supply pressure of the refrigerant.

As described above, the present invention has been described with reference to the accompanying drawings, but various modifications may be made without departing from the spirit of the present invention. Therefore, the scope of the present invention should not be limited to the above-described embodiments, but should be defined by the claims and their equivalents.

110: casing body 111: receiving portion
112: covering part 114: protrusion
115: mounting portion 120: refrigerant pipe
121: pipe member 121a: water supply end
121b: exit means 122: bending part
123: protrusion 124: boundary protrusion
125: concentrator 126: fitting protrusion
127,128: heat deformation reducing layer 210: casting mold
211: cavity 220: cooling supply
221: cooling line 222: cooler
223: first opening and closing valve 230: heating supply
231: heating line 232: heater
233: second on-off valve 240: supply line
241: first branch end 242: second branch end
243: first control valve 244: second control valve
245,246: socket 250: first discharge line
251: third control valve 260: second discharge line
261: fourth control valve 270,340: air transfer unit
280: first pressure regulator 281: first regulator
282: fifth control valve 283: third open / close valve
290: second pressure control unit 291: second regulator
292: 6th control valve 293: 4th open / close valve
294: bypass line 310: control unit
321: first temperature sensor 322: second temperature sensor
331: timer 332: control panel
333: display unit 341: third discharge line

Claims (10)

The cavity corresponding to the casing body is formed to mold the casing body by the molten metal supplied inwardly through the molten metal, and the refrigerant pipe is installed inside to expose both ends to the outside, so that the refrigerant pipe after gravity casting A casting mold to be embedded in the casing body;
A cooling supply unit cooling and supplying air;
A heating supply unit for heating and supplying air;
Cooling air and heating air are selectively supplied from the cooling supply unit and the heating supply unit, respectively, and each of the first and second branch ends branched at both ends of the cooling supply unit and the heating supply unit is detachably connected to both ends of the refrigerant pipe, respectively, A supply line having first and second control valves installed at each of the first and second branch ends;
A first discharge line branched from a rear end of the first control valve at the first branch end, and having a third control valve installed;
A second discharge line branched from a rear end of the second control valve at the second branch end and provided with a fourth control valve;
An air transfer unit to supply air to the refrigerant pipe; And
By the control of the first to fourth control valves, the air supply through the first branch end and the air discharge through the second discharge line every first set time, and the air supply through the second branch end And a control unit for alternately changing the supply side and the discharge side of the air to the refrigerant pipe by switching the operation of air discharge through the first discharge line.
A casing manufacturing apparatus for a heat dissipation device comprising a refrigerant pipe embedded therein. The method according to claim 1,
A first pressure regulator configured to respectively install a first regulator and a fifth control valve to adjust the first set pressure to the supply line; And
And a second pressure regulator configured to respectively install a second regulator and a sixth control valve to adjust the second set pressure to the bypass line installed in the supply line to bypass the first pressure regulator.
The control unit,
And a casing manufacturing apparatus of a heat dissipation device in which a refrigerant pipe is embedded to control the supply pressure of the air by selectively opening the fifth and sixth control valves. The method according to claim 1,
The air transfer unit,
A casing manufacturing apparatus of a heat dissipation device in which a refrigerant pipe is embedded, comprising any one of a blower, a compressor or a compressed air storage container installed in the supply line. The method according to claim 1,
The air transfer unit,
Casing manufacturing apparatus of the heat dissipation device in which the refrigerant pipe, which is a vacuum pump installed on the first and second discharge line side. The method according to claim 2,
A first temperature sensor and a second temperature sensor installed at a side adjacent to an end of the refrigerant pipe at each of the first and second branch ends;
The control unit,
When the measured value deviation of each of the first and second temperature sensors is out of a predetermined range before the first set time elapses, the supply and discharge sides of the air to the refrigerant pipe are switched and the first set time is set. Initialize the new count, and if the hourly decrease rate of the measured value deviation is less than the set value during the second set time after the switching, the fifth and sixth control valves are set to increase the air supply pressure or to maintain a large air pressure. A casing manufacturing apparatus for a heat dissipation device in which a refrigerant pipe is embedded, each controlled. As a manufacturing method using the casing manufacturing apparatus of the heat radiating apparatus in which the refrigerant pipe as described in any one of Claims 1-5 is embedded,
Installing the refrigerant pipe to expose both ends to the outside of the casting mold to form a cavity corresponding to the casing body;
Connecting first and second branch ends of the supply line to supply refrigerant to both ends of the refrigerant pipe, respectively;
The second discharge is connected to the second branch end by supplying the cooling air or heating air supplied from one of the cooling supply unit or the heating supply unit through the supply line to the refrigerant pipe through the first branch end of the supply line. Controlling the first to fourth control valves to be discharged through the line;
Injecting molten metal into the molten metal of the casting mold, thereby forming the casing body by the cavity; And
After the first set time has elapsed, by the control of the first to fourth control valves, operation of air supply through the first branch end and air discharge through the second discharge line every first set time; And alternately changing the supply and discharge sides of the air to the refrigerant pipe by switching the operation of the air supply through the second branch end and the air discharge through the first discharge line to each other.
The method of manufacturing a casing of the heat dissipating device in which the refrigerant pipe is embedded so that the refrigerant pipe is embedded inside the casing body when the casing body is separated from the casting mold by finishing the gravity casting. The method according to claim 6,
The first and second branch ends are connected to both ends of the refrigerant pipe, respectively, and then the fifth and sixth controls the pressures of the cooling air or the heating air supplied from either the cooling supply part or the heating supply part through the supply line. The method of manufacturing a casing of a heat dissipating device, the refrigerant pipe is embedded, further comprising the step of adjusting to the first or second regulator by the control of the valve. The method according to claim 6,
Air supplied through the supply line,
A casing manufacturing method of a heat dissipation device in which a refrigerant pipe is embedded to be transported to be supplied by any one of a blower, a compressor, or a compressed air storage container installed in the supply line. The method according to claim 6,
Air supplied through the supply line,
Casing manufacturing method of the heat dissipation device is embedded, the refrigerant pipe is transferred to be supplied by the vacuum pump installed on the first and second discharge line. The method according to claim 7,
In the case where the measured value deviation of each of the first and second temperature sensors respectively installed on the side adjacent to the end of the refrigerant pipe at each of the first and second branch ends before the first set time elapses is out of a predetermined range, Switching the supply side and the discharge side of the air to the refrigerant pipe, and initializing the first set time and counting a new count; And
If the rate of decrease of the measured value deviation during the second set time after the switching is smaller than the set value, it is determined whether the air supply pressure is set to a large value among the first and second regulators, and if it is set to a large value, it is maintained and small Controlling the fifth and sixth control valves if they are set to be large;
Further comprising, the casing manufacturing method of the heat dissipation device in which the refrigerant pipe is embedded.

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