EP1015835A1 - Condenser for heat exchanger systems - Google Patents

Condenser for heat exchanger systems

Info

Publication number
EP1015835A1
EP1015835A1 EP98929873A EP98929873A EP1015835A1 EP 1015835 A1 EP1015835 A1 EP 1015835A1 EP 98929873 A EP98929873 A EP 98929873A EP 98929873 A EP98929873 A EP 98929873A EP 1015835 A1 EP1015835 A1 EP 1015835A1
Authority
EP
European Patent Office
Prior art keywords
tube
liquid
refrigerant
condenser
condensing
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
EP98929873A
Other languages
German (de)
French (fr)
Other versions
EP1015835B1 (en
Inventor
Chul Soo Lee
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP1015835A1 publication Critical patent/EP1015835A1/en
Application granted granted Critical
Publication of EP1015835B1 publication Critical patent/EP1015835B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/0008—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one medium being in heat conductive contact with the conduits for the other medium
    • 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
    • F25B39/04—Condensers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/14—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending longitudinally
    • F28F1/16—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending longitudinally the means being integral with the element, e.g. formed by extrusion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/0068—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for refrigerant cycles
    • F28D2021/007—Condensers

Definitions

  • the present invention relates, in general, to a condenser for heat exchanger systems and, more particularly, to a condenser capable of reducing a compressed refrigerant, having high temperature and high pressure, from a vapor phase to a liquid phase.
  • a heat exchanger system such as a refrigerator, freezer or refrigerated display case is widely used for preserving food and drink at cool temperatures (for example, 2-5°C) for a lengthy period of time.
  • Such a heat exchange system is operated by a refrigerating cycle.
  • Fig. 1 is a view illustrating a typical refrigerating cycle in a heat exchanger system.
  • the typical refrigerating cycle includes a compressor 1, condenser 2, capillary tube 3, evaporator 4 and accumulator 5.
  • the circulation of a refrigerant in the heat exchanger system is described below. That is, a refrigerant in the heat exchanger system is compressed by the compressor 1, thus having relatively high temperature and high pressure.
  • the compressed refrigerant is introduced into a condenser 2, having a long refrigerant tube, in order to reduce the refrigerant from a vapor phase to a liquid phase. Thereafter, the liquid refrigerant in the condenser 2 is introduced into a capillary tube 3.
  • the liquid refrigerant turns into a mixed refrigerant which consists of the vapor and liquid phases and has relatively low temperature and low pressure.
  • the above mixed refrigerant is quickly vaporized in an evaporator 4 while absorbing heat from the surroundings of the heat exchanger system.
  • the mixed refrigerant in the evaporator 4 is introduced into an accumulator 5 in order to be divided into the vapor and the liquid refrigerants.
  • Such an accumulator 5 comprises intake and discharging tubes and a housing. That is, the vapor refrigerant in the mixed refrigerant is only introduced into the compressor 1 passing through the discharging tube, while the liquid refrigerant in the mixed refrigerant is discharged into and kept in the housing.
  • the refrigerant is compressed by the compressor 1 and is introduced into the condenser 2. At this time, the compressed refrigerant has relatively low temperature while passing through the long refrigerant tube of the condenser 2. Thereafter, the refrigerant, having low temperature, passes through the capillary tube 3, thereby allowing the current speed of the refrigerant to be fast. The refrigerant is discharged from the capillary tube 3 to the evaporator 4. In such a case, since the high pressure of the refrigerant falls, the refrigerant is quickly vaporized in the evaporator 4 while absorbing heat from the surroundings of the heat exchanger system, thus forming cool air to be circulated in the heat exchanger system.
  • the condenser consists of a long refrigerant tube between the compressor and the capillary tube.
  • the above long refrigerant tube is bent in a desired shape by a bending process.
  • the high temperature of the refrigerant spontaneously falls while the refrigerant passes through the long refrigerant tube of the condenser 2.
  • the heat of the refrigerant may be forcibly radiated by a cooling fan mounted around the condenser 2 when necessary.
  • the performance of the condenser namely, the liquefaction of a vapor refrigerant, is based on the radiant heat efficiency of the vapor refrigerant.
  • the above condenser is problematic in that the radiant heat of the refrigerant passing through the condenser is unexpectedly reduced during the height of the warm-weather seasons.
  • the cooling fan is forcibly operated, thereby generating a noise and increasing power consumption.
  • an object of the present invention is to provide a condenser for heat exchanger systems , which has a radiating pipe filled with a condensing medium containing a liquid such as a brine, antifreezing solution or water having a relatively high density, thus increasing the radiant heat of the condenser and reducing the electric power consumption of the condenser, and prolonging the life span of the condenser.
  • the present invention provides a condenser for heat exchanger systems, comprising: a condensing tube connected to a refrigerant tube located between a compressor and a capillary tube in order to allow a refrigerant in a heat exchanger system to pass through the condensing tube; a liquid tube integrally formed on a side wall of the condensing tube by an extrusion process; and a radiating pipe having a long zigzag shape and including a plurality of radiating fins formed on its outer surface, and mounted to the liquid tube in such a manner that both ends of the liquid tube are connected to a liquid supplying inlet and a drain outlet of the radiating pipe, respectively, so a
  • At least two or more condensing tubes are horizontally and integrally formed on both side walls of the liquid tube by an extrusion process.
  • Fig. 1 is a view illustrating a typical refrigerating cycle in a heat exchanger system
  • Fig. 2 is a view illustrating a refrigerating cycle in a heat exchanger system in accordance with the present invention
  • Fig. 3 is a view illustrating the construction of a condenser for heat exchanger systems in accordance with the first embodiment of the present invention.
  • Fig. 4 is an expanded sectional view illustrating the condenser of Fig. 3;
  • Fig. 5 is an expanded sectional view illustrating the construction of a condenser for heat exchanger systems in accordance with the second embodiment of the present invention. Best Mode for Carrying Out the Invention
  • Fig. 2 is a view illustrating a refrigerating cycle in a heat exchanger system in accordance with the present invention.
  • Figs. 3 and 4 are views illustrating the construction of a condenser for heat exchanger systems in accordance with the first embodiment of the present invention.
  • the refrigerating cycle "A" includes a compressor 10, condenser 20, capillary tube 30, evaporator 40 and accumulator 50.
  • the circulation of a refrigerant in the heat exchanger system is described below. That is, the refrigerant in the heat exchanger system is compressed by the compressor 10, thus having relatively high temperature and high pressure.
  • the compressed refrigerant is introduced into the condenser 20, having a long refrigerant tube, in order to reduce the refrigerant from a vapor phase to a liquid phase. Thereafter, the liquid refrigerant in the condenser 20 is introduced into the capillary tube 30.
  • the liquid refrigerant turns into a mixed refrigerant which consists of the vapor and liquid phases and has low temperature and low pressure.
  • the above mixed refrigerant is quickly vaporized in the evaporator 40 while absorbing heat from the surroundings of the heat exchanger system.
  • the mixed refrigerant in the evaporator 40 is introduced into the accumulator 50 in order to be divided into the vapor and liquid refrigerants.
  • the condenser 20 includes a condensing tube 21 and liquid tube 22. That is, the condensing tube 21 communicates with a refrigerant tube 26 located between the compressor 10 and the capillary tube 30 as shown in Fig. 3.
  • the condensing tube 21 is linearly illustrated in Fig. 3, but it actually has a long spiral shape in order to improve the efficiency of the condenser 20.
  • the liquid tube 22 is integrally formed on a side wall 23 of the condensing tube 21 of the condenser 20.
  • a liquid tube 22 is connected to a radiating pipe 25, having a long zigzag shape, in such a manner that both en,ds of the liquid tube 22 are connected to a liquid supplying inlet 25b and a drain outlet 25c of the radiating pipe 25, respectively.
  • a plurality of radiating fins 25a are formed on the outer surface of the radiating pipe 25.
  • the liquid tube 22 is filled with a condensing medium such as a calcium chloride solution, sodium chloride or magnesium chloride solution containing a medium such as a brine, antifreezing solution or water having a relatively high density.
  • slits 23a are longitudinally formed at both top and bottom portions of the side wall
  • the length of the radiating pipe 25 has to be long. That is, another extending tube (not shown), having a condensed construction, is connected between the liquid supplying inlet 25b and the drain outlet 25c of the liquid tube 22 at its both ends.
  • a pump (not shown) is mounted to the radiating pipe 25 at a desired position.
  • a cooling fan (not shown), operated by a control means, may be mounted around the radiating pipe 25 in order to improve the radiant heat of the radiating pipe 25.
  • the manufacturing process of the condenser according to this invention is described below.
  • the liquid tube 22 is integrally formed on the condensing tube 21 by an extrusion process, thus allowing the configuration of the condensing and liquid tubes 21 and 22 to be formed into a peanut shape. Thereafter, the single body of the condensing and liquid tubes 21 and 22 is cut in a desired length. In this case, since the slits 23a are longitudinally formed both top and bottom portions of the side wall 23 formed between the condensing and liquid tubes 21 and 22, thus allowing the condensing and liquid tubes 21 and 22 to be widely distanced from each other when necessary.
  • both ends of the condensing tube 21 are respectively connected to the refrigerant tube 26 by a welding process, thus allowing the refrigerant to flow through the condensing tube 21.
  • both ends of the liquid tube 22 are connected to the liquid supplying inlet 25b and the drain outlet 25c of the radiating pipe 25, respectively, thus allowing the condensing medium to be circulated through the liquid tube 22 and the radiating pipe 25.
  • the circulation of a refrigerant in the heat exchanger system is described below. That is, the refrigerant in the heat exchanger system is compressed by the compressor 10, thus having relatively high temperature and high pressure.
  • the compressed refrigerant is introduced into the condenser 20 in order to reduce the refrigerant from a vapor phase to a liquid phase.
  • the liquid refrigerant in the condenser 20 is introduced into the capillary tube 30.
  • the liquid refrigerant turns into a mixed refrigerant which consists of the vapor and liquid phases and has low temperature and low pressure.
  • the above mixed refrigerant is quickly vaporized in the evaporator 40 while absorbing heat from the surroundings of the heat exchanger system.
  • the condensing medium having high density, passes from the radiating pipe 25 to the liquid tube 22.
  • the heat of the vapor refrigerant, having about 80 °C and passing through the condensing tube 21 is transmitted to the condensing medium which has a normal temperature and passes through the liquid tube 22.
  • the vapor refrigerant easily turns into the liquid refrigerant, while the condensing medium has relatively high temperature.
  • the circulation of the condensing medium, having high temperature is described below.
  • the condensing medium has relatively low temperature while spontaneously passing through the long radiating pipe 25. That is, the condensing medium, having relatively high temperature and passing the liquid supplying inlet 25b, is introduced into the upper portion of the radiating pipe 25. Thereafter, the high temperature of the condensing medium falls while the refrigerant passes from the upper portion to the lower portion of the radiating pipe 25.
  • the condensing medium, having a normal temperature is discharged into the drain outlet 25c of the radiating pipe 25.
  • the condensing medium having relatively high temperature and passing the liquid supplying inlet 25b, forcibly passes from the upper portion to the lower portion of the radiating pipe 25 by a pump (not shown) which is mounted to the radiating pipe 25 at a desired position.
  • the radiating pipe 25, having a condensed construction is exposed to the outside of the condenser 20, thus allowing the piping work of the ra,diating pipe 25 to be easily carried out.
  • a cooling fan (not shown), operated by a control means, may be mounted around the radiating pipe 25 in order to effectively increase the radiant heat of the radiating pipe 25.
  • Fig. 5 is a view illustrating the construction of a condenser for heat exchanger systems in accordance with the second embodiment of the present invention.
  • the condenser includes a liquid tube 22 and two condensing tubes 21a and 21b. That is, the condensing tubes 21a and 21b are horizontally and integrally formed on both side walls of the liquid tube 22 by an extrusion process.
  • the heat of vapor refrigerants, passing through the condensing tubes 21a and 21b is more quickly transmitted to the condensing medium passing through the liquid tube 22.
  • the radiant heat of the condenser is effectively and quickly carried out.
  • a condenser for heat exchanger systems of this invention is provided with a radiating pipe filled with a condensing medium containing a liquid such as a brine, antifreezing solution or water having a relatively high density, thus increasing the radiant heat of the condenser and reducing the electric power consumption of the condenser, and prolonging the life span of the condenser.
  • a condensing medium containing a liquid such as a brine, antifreezing solution or water having a relatively high density
  • the condensing medium having heat transmitted from a vapor refrigerant, has a normal temperature while passing through the long radiating pipe.
  • the condensing medium having relatively high temperature, is forcibly circulated through the radiating pipe by a pump.
  • a cooling fan may be mounted around the radiating pipe in order to effectively increase the radiant heat of the radiating pipe.
  • the radiating pipe having a condensed construction, is exposed to the outside of the condenser, thus allowing the piping work of the radiating pipe to be easily carried out.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Geometry (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

A condenser for heat exchanger systems, capable of reducing a compressed refrigerant from a vapor phase to a liquid phase, is disclosed. The condenser has a condensing tube connected to a refrigerant tube located between a compressor and a capillary tube in order to allow a refrigerant in a heat exchanger system to pass through the condensing tube. Also, a liquid tube is integrally formed on a side wall of the condensing tube by an extrusion process. In addition, a radiating pipe, having a long zigzag shape, is mounted to the liquid tube in such a manner that both ends of the liquid tube are connected to a liquid supplying inlet and a drain outlet of the radiating pipe, respectively. Thus, a condensing medium in the radiating pipe is effectively circulated through the radiating pipe and the liquid tube.

Description

-i-
CONDENSER FOR HEAT EXCHANGER SYSTEMS
Technical Field
The present invention relates, in general, to a condenser for heat exchanger systems and, more particularly, to a condenser capable of reducing a compressed refrigerant, having high temperature and high pressure, from a vapor phase to a liquid phase.
Background Art
As well known to those skilled in the art, a heat exchanger system such as a refrigerator, freezer or refrigerated display case is widely used for preserving food and drink at cool temperatures (for example, 2-5°C) for a lengthy period of time. Such a heat exchange system is operated by a refrigerating cycle.
Fig. 1 is a view illustrating a typical refrigerating cycle in a heat exchanger system.
As shown in the drawing, the typical refrigerating cycle includes a compressor 1, condenser 2, capillary tube 3, evaporator 4 and accumulator 5. The circulation of a refrigerant in the heat exchanger system is described below. That is, a refrigerant in the heat exchanger system is compressed by the compressor 1, thus having relatively high temperature and high pressure. The compressed refrigerant is introduced into a condenser 2, having a long refrigerant tube, in order to reduce the refrigerant from a vapor phase to a liquid phase. Thereafter, the liquid refrigerant in the condenser 2 is introduced into a capillary tube 3. At this time, the liquid refrigerant turns into a mixed refrigerant which consists of the vapor and liquid phases and has relatively low temperature and low pressure. The above mixed refrigerant is quickly vaporized in an evaporator 4 while absorbing heat from the surroundings of the heat exchanger system. The mixed refrigerant in the evaporator 4 is introduced into an accumulator 5 in order to be divided into the vapor and the liquid refrigerants. Such an accumulator 5 comprises intake and discharging tubes and a housing. That is, the vapor refrigerant in the mixed refrigerant is only introduced into the compressor 1 passing through the discharging tube, while the liquid refrigerant in the mixed refrigerant is discharged into and kept in the housing.
In a brief description, the refrigerant is compressed by the compressor 1 and is introduced into the condenser 2. At this time, the compressed refrigerant has relatively low temperature while passing through the long refrigerant tube of the condenser 2. Thereafter, the refrigerant, having low temperature, passes through the capillary tube 3, thereby allowing the current speed of the refrigerant to be fast. The refrigerant is discharged from the capillary tube 3 to the evaporator 4. In such a case, since the high pressure of the refrigerant falls, the refrigerant is quickly vaporized in the evaporator 4 while absorbing heat from the surroundings of the heat exchanger system, thus forming cool air to be circulated in the heat exchanger system.
Particularly, the condenser consists of a long refrigerant tube between the compressor and the capillary tube. The above long refrigerant tube is bent in a desired shape by a bending process. Thus, the high temperature of the refrigerant spontaneously falls while the refrigerant passes through the long refrigerant tube of the condenser 2. Alternatively, the heat of the refrigerant may be forcibly radiated by a cooling fan mounted around the condenser 2 when necessary. In this case, the performance of the condenser, namely, the liquefaction of a vapor refrigerant, is based on the radiant heat efficiency of the vapor refrigerant.
However, the above condenser is problematic in that the radiant heat of the refrigerant passing through the condenser is unexpectedly reduced during the height of the warm-weather seasons. In addition, the cooling fan is forcibly operated, thereby generating a noise and increasing power consumption.
Disclosure of the Invention
Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and an object of the present invention is to provide a condenser for heat exchanger systems , which has a radiating pipe filled with a condensing medium containing a liquid such as a brine, antifreezing solution or water having a relatively high density, thus increasing the radiant heat of the condenser and reducing the electric power consumption of the condenser, and prolonging the life span of the condenser.
In order to accomplish the above object, the present invention provides a condenser for heat exchanger systems, comprising: a condensing tube connected to a refrigerant tube located between a compressor and a capillary tube in order to allow a refrigerant in a heat exchanger system to pass through the condensing tube; a liquid tube integrally formed on a side wall of the condensing tube by an extrusion process; and a radiating pipe having a long zigzag shape and including a plurality of radiating fins formed on its outer surface, and mounted to the liquid tube in such a manner that both ends of the liquid tube are connected to a liquid supplying inlet and a drain outlet of the radiating pipe, respectively, so a
'condensing medium in the radiating pipe is effectively circulated through the radiating pipe and the liquid tube.
In addition, at least two or more condensing tubes are horizontally and integrally formed on both side walls of the liquid tube by an extrusion process.
Brief Description of the Drawings
The above and other objects, features and other advantages of the present invention will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, in which:
Fig. 1 is a view illustrating a typical refrigerating cycle in a heat exchanger system;
Fig. 2 is a view illustrating a refrigerating cycle in a heat exchanger system in accordance with the present invention;
Fig. 3 is a view illustrating the construction of a condenser for heat exchanger systems in accordance with the first embodiment of the present invention.
Fig. 4 is an expanded sectional view illustrating the condenser of Fig. 3; and
Fig. 5 is an expanded sectional view illustrating the construction of a condenser for heat exchanger systems in accordance with the second embodiment of the present invention. Best Mode for Carrying Out the Invention
Fig. 2 is a view illustrating a refrigerating cycle in a heat exchanger system in accordance with the present invention. Figs. 3 and 4 are views illustrating the construction of a condenser for heat exchanger systems in accordance with the first embodiment of the present invention.
As shown in Figs. 2 to 4, the refrigerating cycle "A" includes a compressor 10, condenser 20, capillary tube 30, evaporator 40 and accumulator 50. The circulation of a refrigerant in the heat exchanger system is described below. That is, the refrigerant in the heat exchanger system is compressed by the compressor 10, thus having relatively high temperature and high pressure. The compressed refrigerant is introduced into the condenser 20, having a long refrigerant tube, in order to reduce the refrigerant from a vapor phase to a liquid phase. Thereafter, the liquid refrigerant in the condenser 20 is introduced into the capillary tube 30. At this time, the liquid refrigerant turns into a mixed refrigerant which consists of the vapor and liquid phases and has low temperature and low pressure. The above mixed refrigerant is quickly vaporized in the evaporator 40 while absorbing heat from the surroundings of the heat exchanger system. The mixed refrigerant in the evaporator 40 is introduced into the accumulator 50 in order to be divided into the vapor and liquid refrigerants.
In addition, the condenser 20 includes a condensing tube 21 and liquid tube 22. That is, the condensing tube 21 communicates with a refrigerant tube 26 located between the compressor 10 and the capillary tube 30 as shown in Fig. 3. For convenience' sake, the condensing tube 21 is linearly illustrated in Fig. 3, but it actually has a long spiral shape in order to improve the efficiency of the condenser 20.
The liquid tube 22 is integrally formed on a side wall 23 of the condensing tube 21 of the condenser 20. Such a liquid tube 22 is connected to a radiating pipe 25, having a long zigzag shape, in such a manner that both en,ds of the liquid tube 22 are connected to a liquid supplying inlet 25b and a drain outlet 25c of the radiating pipe 25, respectively. Also, a plurality of radiating fins 25a are formed on the outer surface of the radiating pipe 25. The liquid tube 22 is filled with a condensing medium such as a calcium chloride solution, sodium chloride or magnesium chloride solution containing a medium such as a brine, antifreezing solution or water having a relatively high density.
As shown in Fig. 4, slits 23a are longitudinally formed at both top and bottom portions of the side wall
23 formed between the condensing and liquid tubes 21 and 22, respectively, thus allowing the condensing and liquid tubes 21 and 22 to be widely distanced from each other when necessary. In addition, a plurality of radiating fin
24 are radially formed on the outer surfaces of the condensing and liquid tubes 21 and 22, thereby increasing the efficiency of the condenser 20.
In order to increase the capacity of the condenser 20, the length of the radiating pipe 25 has to be long. That is, another extending tube (not shown), having a condensed construction, is connected between the liquid supplying inlet 25b and the drain outlet 25c of the liquid tube 22 at its both ends. In addition, a pump (not shown) is mounted to the radiating pipe 25 at a desired position. Alternatively, a cooling fan (not shown), operated by a control means, may be mounted around the radiating pipe 25 in order to improve the radiant heat of the radiating pipe 25.
The manufacturing process of the condenser according to this invention is described below. The liquid tube 22 is integrally formed on the condensing tube 21 by an extrusion process, thus allowing the configuration of the condensing and liquid tubes 21 and 22 to be formed into a peanut shape. Thereafter, the single body of the condensing and liquid tubes 21 and 22 is cut in a desired length. In this case, since the slits 23a are longitudinally formed both top and bottom portions of the side wall 23 formed between the condensing and liquid tubes 21 and 22, thus allowing the condensing and liquid tubes 21 and 22 to be widely distanced from each other when necessary.
Thereafter, both ends of the condensing tube 21 are respectively connected to the refrigerant tube 26 by a welding process, thus allowing the refrigerant to flow through the condensing tube 21. In addition, both ends of the liquid tube 22 are connected to the liquid supplying inlet 25b and the drain outlet 25c of the radiating pipe 25, respectively, thus allowing the condensing medium to be circulated through the liquid tube 22 and the radiating pipe 25.
Therefore, the circulation of a refrigerant in the heat exchanger system is described below. That is, the refrigerant in the heat exchanger system is compressed by the compressor 10, thus having relatively high temperature and high pressure. The compressed refrigerant is introduced into the condenser 20 in order to reduce the refrigerant from a vapor phase to a liquid phase. Thereafter, the liquid refrigerant in the condenser 20 is introduced into the capillary tube 30. At this time, the liquid refrigerant turns into a mixed refrigerant which consists of the vapor and liquid phases and has low temperature and low pressure. The above mixed refrigerant is quickly vaporized in the evaporator 40 while absorbing heat from the surroundings of the heat exchanger system. Particularly, when the vapor refrigerant, having a relatively high temperature, passes through the condensing tube 21 of the condenser 20, the condensing medium, having high density, passes from the radiating pipe 25 to the liquid tube 22. At this time, the heat of the vapor refrigerant, having about 80 °C and passing through the condensing tube 21, is transmitted to the condensing medium which has a normal temperature and passes through the liquid tube 22. Thus, the vapor refrigerant easily turns into the liquid refrigerant, while the condensing medium has relatively high temperature.
In such a case, the circulation of the condensing medium, having high temperature, is described below. First, when the capacity of the condenser 20 is small, the condensing medium has relatively low temperature while spontaneously passing through the long radiating pipe 25. That is, the condensing medium, having relatively high temperature and passing the liquid supplying inlet 25b, is introduced into the upper portion of the radiating pipe 25. Thereafter, the high temperature of the condensing medium falls while the refrigerant passes from the upper portion to the lower portion of the radiating pipe 25. Thus, the condensing medium, having a normal temperature, is discharged into the drain outlet 25c of the radiating pipe 25.
Second, when the capacity of the condenser 20 is large, the condensing medium, having relatively high temperature and passing the liquid supplying inlet 25b, forcibly passes from the upper portion to the lower portion of the radiating pipe 25 by a pump (not shown) which is mounted to the radiating pipe 25 at a desired position. In this case, the radiating pipe 25, having a condensed construction, is exposed to the outside of the condenser 20, thus allowing the piping work of the ra,diating pipe 25 to be easily carried out. Alternatively, a cooling fan (not shown), operated by a control means, may be mounted around the radiating pipe 25 in order to effectively increase the radiant heat of the radiating pipe 25.
Fig. 5 is a view illustrating the construction of a condenser for heat exchanger systems in accordance with the second embodiment of the present invention.
In the second embodiment, the condenser includes a liquid tube 22 and two condensing tubes 21a and 21b. That is, the condensing tubes 21a and 21b are horizontally and integrally formed on both side walls of the liquid tube 22 by an extrusion process. Thus, the heat of vapor refrigerants, passing through the condensing tubes 21a and 21b, is more quickly transmitted to the condensing medium passing through the liquid tube 22. As a result, the radiant heat of the condenser is effectively and quickly carried out.
Industrial Applicability
As mentioned above, a condenser for heat exchanger systems of this invention is provided with a radiating pipe filled with a condensing medium containing a liquid such as a brine, antifreezing solution or water having a relatively high density, thus increasing the radiant heat of the condenser and reducing the electric power consumption of the condenser, and prolonging the life span of the condenser.
In addition, when the capacity of the condenser is small, the condensing medium, having heat transmitted from a vapor refrigerant, has a normal temperature while passing through the long radiating pipe. When the capacity of the condenser is large, the condensing medium, having relatively high temperature, is forcibly circulated through the radiating pipe by a pump. Alternatively, a cooling fan may be mounted around the radiating pipe in order to effectively increase the radiant heat of the radiating pipe.
Furthermore, the radiating pipe, having a condensed construction, is exposed to the outside of the condenser, thus allowing the piping work of the radiating pipe to be easily carried out.
Although the preferred embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims.

Claims

Claims
1. A condenser for heat exchanger systems, comprising: a condensing tube connected to a refrigerant tube located between a compressor and a capillary tube in order to allow a refrigerant in a heat exchanger system to pass through said condensing tube; a liquid tube integrally formed on a side wall of said condensing tube by an extrusion process; and a radiating pipe having a long zigzag shape and including a plurality of radiating fins formed on its outer surface, and mounted to said liquid tube in such a manner that both ends of said liquid tube are connected to a liquid supplying inlet and a drain outlet of said radiating pipe, respectively, so a condensing medium in said radiating pipe is effectively circulated through said radiating pipe and said liquid tube.
2. The condenser as claimed in Claim 1, wherein at least two or more condensing tubes are horizontally and integrally formed on both side walls of said liquid tube by an extrusion process.
EP98929873A 1998-06-15 1998-06-15 Condenser for heat exchanger systems Expired - Lifetime EP1015835B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/KR1998/000158 WO1999066281A1 (en) 1998-06-15 1998-06-15 Condenser for heat exchanger systems

Publications (2)

Publication Number Publication Date
EP1015835A1 true EP1015835A1 (en) 2000-07-05
EP1015835B1 EP1015835B1 (en) 2003-10-01

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EP98929873A Expired - Lifetime EP1015835B1 (en) 1998-06-15 1998-06-15 Condenser for heat exchanger systems

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EP (1) EP1015835B1 (en)
JP (1) JP3333500B2 (en)
CN (1) CN1103434C (en)
AU (1) AU7938998A (en)
DE (1) DE69818696T2 (en)
WO (1) WO1999066281A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4631224B2 (en) * 2001-07-04 2011-02-16 ダイキン工業株式会社 Heat exchanger
WO2004033947A1 (en) * 2002-09-20 2004-04-22 Erbslöh Aluminium Gmbh Heat exchanger, method for producing said heat exchanger and an extruded composite profile used for the production thereof
WO2004051168A2 (en) * 2002-12-03 2004-06-17 Rane Milind V Tube-tube heat exchangers
JP2005291696A (en) * 2004-03-11 2005-10-20 Tokyo Electric Power Co Inc:The Condenser, heat pump and heat utilization device
JP5130676B2 (en) * 2006-08-15 2013-01-30 東京電力株式会社 Steam generation system
JP7044969B2 (en) * 2018-03-01 2022-03-31 ダイキン工業株式会社 Heat exchanger
KR102622254B1 (en) * 2021-12-28 2024-01-08 태성전기(주) Refrigerant pipe equipment for fridge-freezer

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3205364A1 (en) * 1982-02-15 1983-08-25 Jürgen 4500 Osnabrück Vonhoff THREE-TUBE CONDENSER FOR HEAT PUMPS
DE3411567A1 (en) * 1984-03-29 1985-10-10 Küppersbusch AG, 4650 Gelsenkirchen Heat exchanger, in particular for a refrigerant circuit

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9966281A1 *

Also Published As

Publication number Publication date
AU7938998A (en) 2000-01-05
CN1266482A (en) 2000-09-13
DE69818696T2 (en) 2004-08-05
JP3333500B2 (en) 2002-10-15
EP1015835B1 (en) 2003-10-01
DE69818696D1 (en) 2003-11-06
CN1103434C (en) 2003-03-19
WO1999066281A1 (en) 1999-12-23
JP2002518660A (en) 2002-06-25

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