WO2006101322A1 - A refrigeration apparatus for water purifier having reduced noise from its evaporator - Google Patents

A refrigeration apparatus for water purifier having reduced noise from its evaporator Download PDF

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Publication number
WO2006101322A1
WO2006101322A1 PCT/KR2006/000998 KR2006000998W WO2006101322A1 WO 2006101322 A1 WO2006101322 A1 WO 2006101322A1 KR 2006000998 W KR2006000998 W KR 2006000998W WO 2006101322 A1 WO2006101322 A1 WO 2006101322A1
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WO
WIPO (PCT)
Prior art keywords
tube
capillary tube
noise
evaporator
refrigerant
Prior art date
Application number
PCT/KR2006/000998
Other languages
French (fr)
Inventor
Jong-Keuk Lim
Original Assignee
Woongjin Coway Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Woongjin Coway Co., Ltd. filed Critical Woongjin Coway Co., Ltd.
Publication of WO2006101322A1 publication Critical patent/WO2006101322A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B39/00—Evaporators; Condensers
    • F25B39/02—Evaporators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/30—Expansion means; Dispositions thereof
    • F25B41/37—Capillary tubes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2500/00—Problems to be solved
    • F25B2500/01—Geometry problems, e.g. for reducing size
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2500/00—Problems to be solved
    • F25B2500/12—Sound
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2500/00—Problems to be solved
    • F25B2500/13—Vibrations

Definitions

  • the invention relates to a refrigeration apparatus for a water purifier for supplying cool and hot water. More particularly, the invention relates to a refrigeration apparatus for a water purifier having a low-noise evaporator, in which a noise-absorbing tube and a capillary tube are disposed coaxially and inserted together into an evaporator to prevent vibration noise generated from pressure difference between the inner tube of the evaporator and the capillary tube, thereby enabling quiet operation.
  • FlG. 1 illustrates a main constitution of a conventional water purifier for supplying cool or hot potable water.
  • the conventional cool/hot water purifier 100 includes a water tank 120 for collecting water filtered by a multi-filter 110, a cool water supplier 130 for cooling the water collected in the water tank 120 to a predetermined temperature or lower to supply the water at low temperature, and a hot water supplier 140 for heating the water to a predetermined temperature or higher to supply the water at high temperature.
  • the cool water supplier 130 has a cooling tank 132 for cooling the water, and the cooling tank 132 has a refrigeration apparatus 150 for cooling the water to a predetermined temperature or lower via a refrigeration cycle.
  • the hot water supplier 140 has a heating tank 142 for heating the water, and the heating tank 142 typically has a heating apparatus 160 which is provided with an electrical resistance heater 144 for heating water to a predetermined temperature or higher to be discharged.
  • potable water is supplied through a water supply tube 102 and purified while passing through a plurality of filters 110, and then collected in the water tank 120.
  • the water collected in the water tank 120 passes through both the cool water supplier 130 and the hot water supplier 140, and according to the selection made by the user, is discharged through a conduit 170 to the outside as either cool water or hot water.
  • the cool water supplier 130 cools water by a refrigeration apparatus 150 comprising a compressor 152, a condenser 154, a capillary tube 156 and an evaporator 158.
  • a refrigerant moves through each component and is evaporated in the evaporator 158 to take away heat of the water contained in the cooling tank 132 to cool the water in the cooling tank 132.
  • the refrigeration apparatus 150 converts the phase of the refrigerant to exchange heat via a refrigeration cycle.
  • the refrigeration cycle is composed of the compressor 152, the condenser 154, the capillary tube 156 and the evaporator 158 connected to each other by refrigerant piping through which the refrigerant circulates while being changed in its phase.
  • the compressor 152 compresses the refrigerant at high pressure, and the condenser
  • the capillary tube 156 passes and converts the low-temperature and high-pressure refrigerant passed through the condenser 154 to a low-temperature and low-pressure liquid refrigerant.
  • the evaporator 158 evaporates the low-temperature and low-pressure refrigerant passed through the capillary tube 156 to convert the refrigerant to a gaseous state, and using latent heat of the refrigerant allows the refrigerant to exchange heat with the water inside the cooling tank 132, thereby cooling the water in the cooling tank 132.
  • the evaporator 158 is disposed inside the cooling tank 132 in a form of a coil, which is illustrated in FlG. 2.
  • the evaporator 158 of the conventional cool/hot water purifier 100 is in a dual tube structure in which an inner tube 164 functioning as the refrigerant tube is inserted into an outer tube 162 functioning as a protective tube. This dual tube forms a coil.
  • the thin capillary tube 156 is inserted into the evaporator 158 to the extent of 100mm to 250mm, and an end portion of the inner tube 164 at the inlet side of the evaporator 158 is sealed by welding so that it is connected with the capillary tube 156.
  • FlG. 3 illustrates such a structure in detail.
  • the evaporator provided in the conventional cool/hot water purifier 100 has the capillary tube 156 inserted into the inner tube 164.
  • the inlet portion of the evaporator 158 is a dual tube structure in which the capillary tube 156 is inserted into the inner tube 164.
  • the inner tube 164 is inserted into an outer tube 162, thereby forming a triple tube structure with the outer tube 162, the inner tube 164 and the capillary tube 156 as shown in HG. 3(b).
  • the present invention has been made to solve the foregoing problems of the prior art and therefore an object according to an aspect of the present invention is to provide a refrigeration apparatus for a water purifier having an evaporator which prevents an end portion of a capillary tube from vibrating due to pressure difference between the evaporator and the capillary tube when a refrigerant is introduced into an inner tube of the evaporator from the capillary tube, thereby preventing noise to enable quiet operation.
  • a refrigeration apparatus for a water purifier for supplying cool and hot water including: a compressor for compressing a refrigerant; a condenser for releasing heat from the high-temperature and high-pressure refrigerant passed through the compressor to convert the refrigerant to a liquid refrigerant; a capillary tube for converting the low- temperature high-pressure refrigerant passed through the condenser to a low-pressure liquid refrigerant; an evaporator for evaporating the low-temperature, low-pressure refrigerant passed through the capillary tube to cool water in a cooling tank; and a noise- absorbing tube inserted together with the capillary tube into an inner tube of the evaporator to fill up a space in the inner tube, thereby preventing vibration of the capillary tube and noise.
  • the present invention provides the refrigeration apparatus having an evaporator, in which the noise-absorbing tube preferably comprises copper tubing made of softer material than the tubing of the capillary tube.
  • the capillary tube is fixedly received in the noise-absorbing tube such that the noise-absorbing tube is tightly attached to an outer side of the capillary tube with a tool without deforming the capillary tube.
  • a noise-absorbing tube is inserted together with a capillary tube into an inner tube of an evaporator to reduce the empty space in the inner tube of the evaporator. Therefore, when a refrigerant is introduced into the inner tube of the evaporator from the capillary tube, even if the end portion of the capillary tube vibrates due to pressure difference between the inner tube and the capillary tube, the noise from the vibrations is reduced, thereby enabling quiet operation.
  • the noise-absorbing tube is made of copper tubing that is softer than the tubing of the capillary tube so that only the noise-absorbing tube is modified in its form to be fixedly attached to the capillary tube without deforming the capillary tube.
  • the capillary tube is fixedly received in the noise-absorbing tube such that the noise-absorbing tube is tightly attached to an outer side of the capillary tube with a tool without deforming the capillary tube, thereby allowing easy assembly process.
  • an interval of 0.5mm to 2.0mm is maintained between an outer circumference of the noise-absorbing tube and an inner circumference of the inner tube of the evaporator so that even if an end portion of the capillary tube vibrates, the noise is reduced more thoroughly to enable quiet operation.
  • FIG. 1 is a block diagram illustrating a conventional cool/hot water purifier
  • FIG. 2 is a partially cut-away sectional view illustrating an evaporator of the conventional cool/hot water purifier
  • FIG. 3 is a partial, detailed view of FIG. 2, in which (a) is a sectional view cut along line A-A, and (b) is a sectional view cut along line B-B;
  • FIG. 4 is a block diagram illustrating a refrigeration apparatus having a low-noise evaporator for a water purifier according to the present invention.
  • FIG. 5 is a partial, detailed view of FIG. 4, in which (a) is a sectional view cut along line C-C, (b) is a sectional view cut along line D-D, and (c) is a sectional view cut along line E-E.
  • the refrigeration apparatus 1 having a low-noise evaporator, for a water purifier includes, as shown in FlG. 4, a compressor 5 for compressing a refrigerant at high pressure, a condenser 10 for releasing heat from the high-temperature and high- pressure refrigerant passed through the condenser 10 to convert to a liquid refrigerant, and a capillary tube 15 for converting the low-temperature and high-pressure refrigerant passed through the condenser 10 to a low-temperature and low-pressure liquid refrigerant.
  • the present invention includes an evaporator 20 for evaporating the low-temperature and low-pressure refrigerant passed through the capillary tube 15 to cool the water in a cooling tank, and a noise-absorbing tube 30 inserted together with the capillary tube 15 into an inner tube 164 of the evaporator 20.
  • the noise-absorbing tube 30 receives the capillary tube 15 to fill up the space in the inner tube 164 of the evaporator 20, thereby preventing vibrations and noise.
  • the inlet portion of the noise-absorbing tube 30 is a triple tube structure in which the noise-absorbing tube is inserted together with the capillary tube 15 into the inner tube 164. Downstream of an inlet connector 20a of the evaporator 20, the inner tube 164 is received into a stainless SUS outer tube 162, forming a quadruple tube structure with the outer tube 162, the inner tube 164, the noise-absorbing tube 30 and the capillary tube 15.
  • the noise-absorbing tube 30 is preferably made of copper tubing which is softer than the tubing of the capillary tube 15. Therefore, the noise-absorbing tube 30 is easily modified in its form by external force.
  • the capillary tube 15 is fixedly received in the noise-absorbing tube 30 such that the noise-absorbing tube 30 is tightly attached to an outer side of the capillary tube 15 with a tool or the like without deforming the capillary tube 15.
  • the upper end of the noise-absorbing tube 30 is compressed and fixed onto the capillary tube 15.
  • the noise-absorbing tube 30 is made of softer material than the capillary tube 15, it is possible to tightly attach and fix the noise-absorbing tube 30 onto an outer side of the capillary tube 15 without deforming the capillary tube 15.
  • This interval t is small enough that even if the noise-absorbing tube 30 vibrates together with the capillary tube 15 and bumps against the wall of the inner tube of the evaporator 20, the noise from such bumping is hardly audible from the outside.
  • the noise-absorbing tube 30 receives the capillary tube 15 such that the noise-absorbing tube 30 is tightly attached to an outer side of the capillary tube with a tool.
  • the noise-absorbing tube 30 and the capillary tube 15 are integrally fixed without deforming the capillary tube 15.
  • the noise-absorbing tube 30 together with the capillary tube 15 is inserted into the inner tube 164 of the evaporator 20, and the capillary tube 15 is sealed and welded to the inlet portion of the inner tube 164 of the evaporator 20 to be fixed to the inner tube 164.
  • the dimensions of the inner tube 164 of the evaporator 20 are 6.35mm in an outer circumference, 5.15mm in an inner circumference, and 0.6mm in a thickness.
  • the noise-absorbing tube 30 is made of soft material with an outer circumference of 3.5mm, inner circumference of 2.2mm, and a thickness of 0.65mm.
  • the capillary tube 15 is made of hard material with an outer circumference of 1.8mm, an inner circumference of 0.7mm, and a thickness of 0.55mm.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)

Abstract

A refrigeration apparatus for a water purifier, in which vibration noise of a capillary tube is prevented in an evaporator to enable quiet operation. The refrigeration apparatus includes a compressor for compressing a refrigerant with high pressure and a condenser for releasing heat from the high-temperature and high-pressure refrigerant passed through the compressor to convert the refrigerant to a liquid refrigerant. The apparatus also includes a capillary tube for converting the low-temperature high-pressure refrigerant passed through the condenser to a low- pressure liquid refrigerant, and an evaporator for evaporating the low-temperature, low-pressure refrigerant passed through the capillary tube to cool water in a cooling tank. The apparatus further includes a noise-absorbing tube inserted together with the capillary tube into an inner tube of the evaporator to fill up a space in the inner tube, thereby preventing vibration of the capillary tube and noise. The invention prevents vibration of the end portion of the capillary tube due to the pressure difference between the inner tube of the evaporator and the capillary tube, thereby preventing noise to enable quiet operation.

Description

Description
A REFRIGERATION APPARATUS FOR WATER PURIFIER HAVING REDUCED NOISE FROM ITS EVAPORATOR
Technical Field
[1] The invention relates to a refrigeration apparatus for a water purifier for supplying cool and hot water. More particularly, the invention relates to a refrigeration apparatus for a water purifier having a low-noise evaporator, in which a noise-absorbing tube and a capillary tube are disposed coaxially and inserted together into an evaporator to prevent vibration noise generated from pressure difference between the inner tube of the evaporator and the capillary tube, thereby enabling quiet operation.
[2]
Background Art
[3] FlG. 1 illustrates a main constitution of a conventional water purifier for supplying cool or hot potable water.
[4] As shown in FlG. 1, the conventional cool/hot water purifier 100 includes a water tank 120 for collecting water filtered by a multi-filter 110, a cool water supplier 130 for cooling the water collected in the water tank 120 to a predetermined temperature or lower to supply the water at low temperature, and a hot water supplier 140 for heating the water to a predetermined temperature or higher to supply the water at high temperature.
[5] In such a conventional cool/hot water purifier 100, the cool water supplier 130 has a cooling tank 132 for cooling the water, and the cooling tank 132 has a refrigeration apparatus 150 for cooling the water to a predetermined temperature or lower via a refrigeration cycle.
[6] In addition, the hot water supplier 140 has a heating tank 142 for heating the water, and the heating tank 142 typically has a heating apparatus 160 which is provided with an electrical resistance heater 144 for heating water to a predetermined temperature or higher to be discharged.
[7] Examining the operation inside the water purifier 100, potable water is supplied through a water supply tube 102 and purified while passing through a plurality of filters 110, and then collected in the water tank 120. The water collected in the water tank 120 passes through both the cool water supplier 130 and the hot water supplier 140, and according to the selection made by the user, is discharged through a conduit 170 to the outside as either cool water or hot water.
[8] In this conventional cool/hot water purifier 100, the cool water supplier 130 cools water by a refrigeration apparatus 150 comprising a compressor 152, a condenser 154, a capillary tube 156 and an evaporator 158. A refrigerant moves through each component and is evaporated in the evaporator 158 to take away heat of the water contained in the cooling tank 132 to cool the water in the cooling tank 132.
[9] The refrigeration apparatus 150 converts the phase of the refrigerant to exchange heat via a refrigeration cycle. The refrigeration cycle is composed of the compressor 152, the condenser 154, the capillary tube 156 and the evaporator 158 connected to each other by refrigerant piping through which the refrigerant circulates while being changed in its phase.
[10] The compressor 152 compresses the refrigerant at high pressure, and the condenser
154 releases heat from the high-temperature and high-pressure refrigerant to convert the refrigerant to a liquid refrigerant. The capillary tube 156 passes and converts the low-temperature and high-pressure refrigerant passed through the condenser 154 to a low-temperature and low-pressure liquid refrigerant.
[11] In addition, the evaporator 158 evaporates the low-temperature and low-pressure refrigerant passed through the capillary tube 156 to convert the refrigerant to a gaseous state, and using latent heat of the refrigerant allows the refrigerant to exchange heat with the water inside the cooling tank 132, thereby cooling the water in the cooling tank 132.
[12] As a result, the water loses heat as it passes through the cooling tank 132 and is supplied through faucets 180 as cool water.
[13] In the cool water supplier 130, the evaporator 158 is disposed inside the cooling tank 132 in a form of a coil, which is illustrated in FlG. 2.
[14] The evaporator 158 of the conventional cool/hot water purifier 100 is in a dual tube structure in which an inner tube 164 functioning as the refrigerant tube is inserted into an outer tube 162 functioning as a protective tube. This dual tube forms a coil. At the other side of the evaporator 158, the thin capillary tube 156 is inserted into the evaporator 158 to the extent of 100mm to 250mm, and an end portion of the inner tube 164 at the inlet side of the evaporator 158 is sealed by welding so that it is connected with the capillary tube 156.
[15] FlG. 3 illustrates such a structure in detail.
[16] The evaporator provided in the conventional cool/hot water purifier 100 has the capillary tube 156 inserted into the inner tube 164. As shown in FlG. 3(a), the inlet portion of the evaporator 158 is a dual tube structure in which the capillary tube 156 is inserted into the inner tube 164. Then, downstream of the connector 158a of the evaporator 158, the inner tube 164 is inserted into an outer tube 162, thereby forming a triple tube structure with the outer tube 162, the inner tube 164 and the capillary tube 156 as shown in HG. 3(b).
[17] When the capillary tube 156 is inserted horizontally into the evaporator provided in such a conventional cool/hot water purifier 100, there is no problem with noise or vibrations. However, in case of the capillary tube 156 being inserted vertically into the evaporator 158 as shown, the end portion of the capillary tube 156 vibrates inside the inner tube 164 due to internal pressure difference between the capillary tube 156 and the evaporator 158, which in turn generates noise from the refrigerant tube of the evaporator 158 and the capillary tube 156 continuously bumping against each other.
[18]
Disclosure of Invention Technical Problem
[19] The present invention has been made to solve the foregoing problems of the prior art and therefore an object according to an aspect of the present invention is to provide a refrigeration apparatus for a water purifier having an evaporator which prevents an end portion of a capillary tube from vibrating due to pressure difference between the evaporator and the capillary tube when a refrigerant is introduced into an inner tube of the evaporator from the capillary tube, thereby preventing noise to enable quiet operation.
[20]
Technical Solution
[21] According to an aspect of the invention for realizing the object, there is provided a refrigeration apparatus for a water purifier for supplying cool and hot water, including: a compressor for compressing a refrigerant; a condenser for releasing heat from the high-temperature and high-pressure refrigerant passed through the compressor to convert the refrigerant to a liquid refrigerant; a capillary tube for converting the low- temperature high-pressure refrigerant passed through the condenser to a low-pressure liquid refrigerant; an evaporator for evaporating the low-temperature, low-pressure refrigerant passed through the capillary tube to cool water in a cooling tank; and a noise- absorbing tube inserted together with the capillary tube into an inner tube of the evaporator to fill up a space in the inner tube, thereby preventing vibration of the capillary tube and noise.
[22] The present invention provides the refrigeration apparatus having an evaporator, in which the noise-absorbing tube preferably comprises copper tubing made of softer material than the tubing of the capillary tube.
[23] In addition, in the refrigeration apparatus, the capillary tube is fixedly received in the noise-absorbing tube such that the noise-absorbing tube is tightly attached to an outer side of the capillary tube with a tool without deforming the capillary tube.
[24] In addition, in the refrigeration apparatus, an interval of 0.5mm to 2.0mm is maintained between an outer circumference of the noise-absorbing tube and an inner circumference of the inner tube of the evaporator. [25]
Advantageous Effects
[26] According to an embodiment of the present invention, a noise-absorbing tube is inserted together with a capillary tube into an inner tube of an evaporator to reduce the empty space in the inner tube of the evaporator. Therefore, when a refrigerant is introduced into the inner tube of the evaporator from the capillary tube, even if the end portion of the capillary tube vibrates due to pressure difference between the inner tube and the capillary tube, the noise from the vibrations is reduced, thereby enabling quiet operation.
[27] In addition, the noise-absorbing tube is made of copper tubing that is softer than the tubing of the capillary tube so that only the noise-absorbing tube is modified in its form to be fixedly attached to the capillary tube without deforming the capillary tube.
[28] Moreover, the capillary tube is fixedly received in the noise-absorbing tube such that the noise-absorbing tube is tightly attached to an outer side of the capillary tube with a tool without deforming the capillary tube, thereby allowing easy assembly process.
[29] Furthermore, in the present invention, an interval of 0.5mm to 2.0mm is maintained between an outer circumference of the noise-absorbing tube and an inner circumference of the inner tube of the evaporator so that even if an end portion of the capillary tube vibrates, the noise is reduced more thoroughly to enable quiet operation.
[30]
Brief Description of the Drawings
[31] FIG. 1 is a block diagram illustrating a conventional cool/hot water purifier;
[32] FIG. 2 is a partially cut-away sectional view illustrating an evaporator of the conventional cool/hot water purifier;
[33] FIG. 3 is a partial, detailed view of FIG. 2, in which (a) is a sectional view cut along line A-A, and (b) is a sectional view cut along line B-B;
[34] FIG. 4 is a block diagram illustrating a refrigeration apparatus having a low-noise evaporator for a water purifier according to the present invention; and
[35] FIG. 5 is a partial, detailed view of FIG. 4, in which (a) is a sectional view cut along line C-C, (b) is a sectional view cut along line D-D, and (c) is a sectional view cut along line E-E.
[36]
Mode for the Invention
[37] The following description will present a refrigeration apparatus for a water purifier having a lower-noise evaporator with reference to the accompanying drawings. [38] The refrigeration apparatus 1, having a low-noise evaporator, for a water purifier includes, as shown in FlG. 4, a compressor 5 for compressing a refrigerant at high pressure, a condenser 10 for releasing heat from the high-temperature and high- pressure refrigerant passed through the condenser 10 to convert to a liquid refrigerant, and a capillary tube 15 for converting the low-temperature and high-pressure refrigerant passed through the condenser 10 to a low-temperature and low-pressure liquid refrigerant.
[39] In addition, the present invention includes an evaporator 20 for evaporating the low-temperature and low-pressure refrigerant passed through the capillary tube 15 to cool the water in a cooling tank, and a noise-absorbing tube 30 inserted together with the capillary tube 15 into an inner tube 164 of the evaporator 20.
[40] The noise-absorbing tube 30 receives the capillary tube 15 to fill up the space in the inner tube 164 of the evaporator 20, thereby preventing vibrations and noise.
[41] As shown in FlG. 5(a), the inlet portion of the noise-absorbing tube 30 is a triple tube structure in which the noise-absorbing tube is inserted together with the capillary tube 15 into the inner tube 164. Downstream of an inlet connector 20a of the evaporator 20, the inner tube 164 is received into a stainless SUS outer tube 162, forming a quadruple tube structure with the outer tube 162, the inner tube 164, the noise-absorbing tube 30 and the capillary tube 15.
[42] In addition, the noise-absorbing tube 30 is preferably made of copper tubing which is softer than the tubing of the capillary tube 15. Therefore, the noise-absorbing tube 30 is easily modified in its form by external force.
[43] Therefore, the capillary tube 15 is fixedly received in the noise-absorbing tube 30 such that the noise-absorbing tube 30 is tightly attached to an outer side of the capillary tube 15 with a tool or the like without deforming the capillary tube 15. Here, using vise pliers or other compressing tools, the upper end of the noise-absorbing tube 30 is compressed and fixed onto the capillary tube 15.
[44] Here, as the noise-absorbing tube 30 is made of softer material than the capillary tube 15, it is possible to tightly attach and fix the noise-absorbing tube 30 onto an outer side of the capillary tube 15 without deforming the capillary tube 15.
[45] The noise-absorbing tube 30 compressed and fixed onto the capillary tube 15 as just described is inserted into the inner tube 164 of the evaporator 20.
[46] When the noise-absorbing tube 30 together with the capillary tube 15 is inserted into the inner tube 164 of the evaporator 20, an interval t of 0.5mm to 2.0mm is maintained between an outer circumference of the noise-absorbing tube 30 and an inner circumference of the inner tube 164 of the evaporator, as shown in FlG. 5(c).
[47] This interval t is small enough that even if the noise-absorbing tube 30 vibrates together with the capillary tube 15 and bumps against the wall of the inner tube of the evaporator 20, the noise from such bumping is hardly audible from the outside.
[48] In the refrigeration apparatus 1 having a low-noise evaporator according to the above configuration, the noise-absorbing tube 30 receives the capillary tube 15 such that the noise-absorbing tube 30 is tightly attached to an outer side of the capillary tube with a tool. Thus, the noise-absorbing tube 30 and the capillary tube 15 are integrally fixed without deforming the capillary tube 15.
[49] In addition, the noise-absorbing tube 30 together with the capillary tube 15 is inserted into the inner tube 164 of the evaporator 20, and the capillary tube 15 is sealed and welded to the inlet portion of the inner tube 164 of the evaporator 20 to be fixed to the inner tube 164.
[50] In this case, the dimensions of the inner tube 164 of the evaporator 20 are 6.35mm in an outer circumference, 5.15mm in an inner circumference, and 0.6mm in a thickness. The noise-absorbing tube 30 is made of soft material with an outer circumference of 3.5mm, inner circumference of 2.2mm, and a thickness of 0.65mm. The capillary tube 15 is made of hard material with an outer circumference of 1.8mm, an inner circumference of 0.7mm, and a thickness of 0.55mm.
[51] When assembled with the above configuration as described above, even if the capillary tube 15 vibrates due to the internal pressure difference between the capillary tube 15 and the evaporator 20 as the refrigerant is introduced into the capillary tube 15, vibrations take place within the limited range of 0.5mm to 2.0 mm, which is the interval t between the noise-absorbing tube 30 and the inner tube 164. This obviates noise, as a result.
[52] While the present invention has been shown and described in connection with the preferred embodiments, it will be apparent to those skilled in the art that modifications, variations and equivalents can be made without departing from the spirit and scope of the invention as defined by the appended claims. The components of the present invention may be presented in diversified material, functions, forms and dimensions, but it will be apparent to those skilled in the art that all of these are included in the scope of the present invention.

Claims

Claims
[1] A refrigeration apparatus for a water purifier for supplying cool and hot water, comprising: a compressor for compressing a refrigerant; a condenser for releasing heat from the high-temperature and high-pressure refrigerant passed through the compressor to convert the refrigerant to a liquid refrigerant; a capillary tube for converting the low-temperature high-pressure refrigerant passed through the condenser to a low-pressure liquid refrigerant; an evaporator for evaporating the low-temperature, low-pressure refrigerant passed through the capillary tube to cool water in a cooling tank; and a noise-absorbing tube inserted together with the capillary tube into an inner tube of the evaporator to fill up a space in the inner tube, thereby preventing vibration of the capillary tube and noise.
[2] The refrigeration apparatus according to claim 1, wherein the noise-absorbing tube comprises copper tubing made of softer material than the tubing of the capillary tube.
[3] The refrigeration apparatus according to claim 1, wherein the capillary tube is fixedly received in the noise-absorbing tube such that the noise-absorbing tube is tightly attached to an outer side of the capillary tube with a tool without deforming the capillary tube.
[4] The refrigeration apparatus according to claim 1, wherein an interval of 0.5mm to 2.0mm is maintained between an outer circumference of the noise-absorbing tube and an inner circumference of the inner tube of the evaporator.
PCT/KR2006/000998 2005-03-21 2006-03-20 A refrigeration apparatus for water purifier having reduced noise from its evaporator WO2006101322A1 (en)

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KR20-2005-0007606U KR200385594Y1 (en) 2005-03-21 2005-03-21 A refrigeration apparatus for water purifier having reduced noise from its evaporator
KR20-2005-0007606 2005-03-21

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Cited By (3)

* Cited by examiner, † Cited by third party
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WO2011039658A3 (en) * 2009-09-29 2011-05-26 Koninklijke Philips Electronics N.V. Heat exchange system and method of producing the same
CN102933922A (en) * 2009-09-29 2013-02-13 皇家飞利浦电子股份有限公司 Heat exchange system and method of producing the same
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WO2015050514A1 (en) * 2013-10-03 2015-04-09 Arcelik Anonim Sirketi A cooling device comprising a flow regulator

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