WO2012144767A2 - Échangeur de chaleur pour dispositif de réfrigération - Google Patents

Échangeur de chaleur pour dispositif de réfrigération Download PDF

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Publication number
WO2012144767A2
WO2012144767A2 PCT/KR2012/002790 KR2012002790W WO2012144767A2 WO 2012144767 A2 WO2012144767 A2 WO 2012144767A2 KR 2012002790 W KR2012002790 W KR 2012002790W WO 2012144767 A2 WO2012144767 A2 WO 2012144767A2
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WO
WIPO (PCT)
Prior art keywords
refrigerant
liquid
liquid separator
gas
pipe
Prior art date
Application number
PCT/KR2012/002790
Other languages
English (en)
Korean (ko)
Other versions
WO2012144767A3 (fr
Inventor
김봉석
Original Assignee
Kim Bong-Suck
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
Priority claimed from KR1020110035460A external-priority patent/KR101057337B1/ko
Priority claimed from KR1020120014631A external-priority patent/KR101355431B1/ko
Application filed by Kim Bong-Suck filed Critical Kim Bong-Suck
Publication of WO2012144767A2 publication Critical patent/WO2012144767A2/fr
Publication of WO2012144767A3 publication Critical patent/WO2012144767A3/fr

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    • 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
    • F28D7/10—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 being arranged one within the other, e.g. concentrically
    • 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
    • F25B40/00—Subcoolers, desuperheaters or superheaters
    • 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
    • F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
    • F25B43/006—Accumulators
    • 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
    • F28D3/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium flows in a continuous film, or trickles freely, over the conduits
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/22—Arrangements for directing heat-exchange media into successive compartments, e.g. arrangements of guide plates
    • F28F2009/222—Particular guide plates, baffles or deflectors, e.g. having particular orientation relative to an elongated casing or conduit
    • F28F2009/226—Transversal partitions

Definitions

  • the present invention relates to a liquid heat exchanger of a refrigerating device, and more particularly, a receiver for temporarily storing the liquid refrigerant before the liquid refrigerant condensed in the condenser of the freezing cycle is transferred to the expansion valve, and evaporated by heat exchange in the evaporator.
  • It is composed of a double pipe structure in which a liquid separator for temporarily storing the gas refrigerant before the gas refrigerant is transferred to the compressor is installed in the receiver, and is mixed with the gas refrigerant that is transferred to and stored in the liquid separator from the evaporator.
  • a refrigeration cycle of a refrigerating device using a refrigerant includes a compressor for compressing a low temperature low pressure gas refrigerant evaporated in an evaporator at high temperature and high pressure, and a condenser for condensing the high temperature high pressure gas refrigerant compressed in the compressor with a high temperature high pressure liquid refrigerant.
  • the invention including the basic components of the refrigerating device is a liquid heater of the refrigerating device of Patent No. 0666920 by the inventor.
  • the above-described liquid-liquid heater of the prior art forms a double tube structure of a liquid separator temporarily storing the high temperature and high pressure liquid refrigerant transferred from the condenser and a liquid separator temporarily storing the low temperature and low pressure evaporated gas transferred from the evaporator.
  • the above-mentioned prior art has a problem that the heat exchange action of the high temperature and high pressure liquid refrigerant transferred from the condenser and the low temperature low pressure evaporated gas transferred from the evaporator is not sufficient, and thus the mist liquid liquid refrigerant mixed in the evaporation gas is introduced. It is pointed out that the problem is that the compressor is often failing because it is not transported and injected into the compressor.
  • the present invention has been proposed in view of the above-mentioned problems in the prior art, and the high temperature and high pressure liquid refrigerant transferred from the condenser and temporarily stored in the receiver and the low temperature low pressure evaporated from the evaporator are temporarily stored in the liquid separator.
  • the heat exchange action of the gas is sufficiently performed, and the liquid refrigerant in the mist state mixed in the evaporation gas stored in the liquid separator is sufficiently evaporated into the vaporization gas so that the refrigerant gas transferred to the compressor is in the mist liquid refrigerant. It is an object to ensure that only the completely removed and vaporized gaseous refrigerant is transferred to the compressor, thereby protecting the compressor from failure due to the inflow of liquid refrigerant and improving the refrigerating capacity of the refrigerating device.
  • Another object of the present invention is to provide a liquid heater of a refrigerating device at a low price by reducing the manufacturing cost of the liquid separator.
  • a receiver for storing and transferring the liquid refrigerant condensed in the condenser to the expansion valve, evaporated gas evaporated in the evaporator It is configured to include a liquid separator for storing and transporting to the compressor, and the refrigeration device is configured in a double pipe structure in which the liquid separator is inserted into the receiver, the horizontal axis of the double pipe is installed horizontally In the horizontal type heat exchanger, the upper position of the liquid separator is formed horizontally in the inner upper space of the receiver, and the refrigerant inlet to which the outlet line of the condenser is connected, and the liquid refrigerant conveyed from the condenser
  • At least one of the liquid refrigerant injection pipe and the liquid refrigerant suction pipe is formed by forming any one pipe selected from a rectangular cross section or a circular cross section pipe in a rod shape. .
  • the liquid heater for a refrigerating device which is formed in a vertical form, includes a receiver for storing liquid refrigerant condensed in the condenser and transferring the liquid refrigerant to an expansion valve, and storing the vaporized evaporated gas in the evaporator.
  • liquid separator for the transfer to the inside, and the double column structure in which the liquid separator is inserted into the inside of the receiver is installed, the vertical type column for the refrigeration unit is installed vertically the central axis of the double pipe
  • the upper portion of the liquid separator is formed in the upper space inside the receiver, and connected to the refrigerant inlet connected to the outlet line of the condenser to inject the liquid refrigerant conveyed from the condenser to the upper surface of the liquid separator
  • a liquid refrigerant suction pipe having a plurality of suction holes for sucking the refrigerant;
  • the liquid refrigerant injection pipe or the liquid refrigerant suction pipe is characterized in that formed by any one pipe selected from the rectangular cross-section or circular cross-section pipe in an annular shape.
  • the refrigerating apparatus for a refrigerating device which is formed in a transverse form, includes a receiver for storing liquid refrigerant condensed in the condenser and transferring the liquid refrigerant to an expansion valve, and storing a vaporized evaporated gas in the evaporator, And a double pipe structure in which the liquid separator is inserted into the receiver, and the central axis of the double pipe is horizontally installed.
  • the liquid inlet is formed horizontally in the upper space of the receiver as an upper position of the liquid separator, and the refrigerant inlet to which the outlet line of the condenser is connected, and the liquid refrigerant transferred from the condenser toward the upper portion of the liquid separator.
  • a liquid refrigerant jet pipe having a plurality of injection holes for evenly spraying therein; It is horizontally formed in the lower side of the receiver so as to be located below the liquid separator, the refrigerant outlet to which the inlet line of the expansion valve is connected, and the liquid refrigerant stored in the inner lower side of the receiver to transfer to the expansion valve side
  • a liquid refrigerant suction tube in which a plurality of suction holes are formed to suck the liquid refrigerant;
  • a plurality of diaphragms having an outer diameter inserted in contact with a cylindrical inner surface of the liquid separator, wherein each of the plurality of diaphragms forms a refrigerant flow passage between an inner surface of the liquid separator.
  • the plurality of diaphragm is installed so as to be spaced at regular intervals while being fitted to the support shaft is inserted to be installed horizontally inside the liquid separator, and the plurality of diaphragm Neighboring ones are installed such that the horizontal sections are symmetrically up and down so that the refrigerant flow passages are formed in a zigzag shape from the gas refrigerant inlet to the gas refrigerant outlet so that the refrigerant flows into the liquid separator through the gas refrigerant inlet.
  • the gas coolant flows in a zigzag form inside the liquid separator toward the gas coolant outlet. That is configured to be characterized.
  • the liquid heater for a refrigerating device which is formed in a vertical form, stores a liquid receiver for storing the liquid refrigerant condensed in the condenser and transferring the liquid refrigerant to an expansion valve, and stores the vaporized evaporated gas in the evaporator.
  • a liquid separator for conveying to the compressor is composed of a double pipe structure in which the liquid separator is inserted into the inside of the receiver, the vertical liquid for the refrigeration apparatus is installed vertically the central axis of the double pipe
  • the upper position of the liquid separator is formed in the inner upper space of the receiver, and connected to the refrigerant inlet connected to the outlet line of the condenser to inject the liquid refrigerant conveyed from the condenser from the top of the liquid separator
  • a liquid refrigerant suction pipe having a plurality of suction holes for sucking the refrigerant; And a plurality of diaphragms having
  • a plurality of diaphragms formed by cutting a portion of the plurality of diaphragms, the plurality of diaphragms being installed to be spaced at regular intervals up and down while being fitted to a support shaft inserted and installed to be perpendicular to the inside of the liquid separator, and the plurality of diaphragms. They are installed so that the vertical cross-sections of the neighboring ones are symmetrical to the left and right so that the refrigerant flow passage is formed in a zigzag shape from the lower side to the upper side so that the gas refrigerant flows into the liquid separator through the gas refrigerant inlet. Is configured to be transferred while flowing in a zigzag form in the liquid separator toward the gas refrigerant outlet It is characterized by.
  • the support shaft is part of the body of the boil-off gas inlet pipe connected vertically to the gas coolant inlet of the liquid separator and the boil-off gas outlet pipe connected U-shaped to the gas coolant outlet of the liquid separator.
  • the plurality of diaphragms are fitted into and fixed to the boil-off gas inlet pipe and the boil-off gas outlet tube, and the open ends of the boil-off gas inlet tube and the boil-off gas outlet tube are located on opposite sides of the diaphragm. Characterized in that.
  • the plurality of diaphragm has an arc surface for increasing the heat transfer area with the inner surface of the liquid separator.
  • spiral radiating fins are wound in a spiral shape on the outer circumference of the cylindrical body of the liquid separator and fixedly mounted by welding.
  • the heat exchange action between the low-temperature low-pressure liquid refrigerant condensed in the condenser and the low-temperature low-pressure gas refrigerant evaporated in the evaporator is performed well, and is mixed in the base refrigerant transferred from the evaporator to the liquid separator.
  • the vaporized liquid refrigerant is sufficiently heated and evaporated by the heat exchange effect with the liquid refrigerant flowing down the spiral along the outer circumference of the liquid separator by spiral heat radiating fins, so that only the gas refrigerant from which the misted liquid refrigerant is removed is transferred to the refrigerant transferred to the compressor.
  • evaporated gas (including some liquid refrigerant) is introduced into the liquid separator through the gas refrigerant inlet.
  • the residence time of the liquid separator becomes longer and at the same time, a plurality of diaphragms (heat from the liquid separator heated by the high-temperature liquid refrigerant are transferred to these diaphragms).
  • the refrigerating device has an effect that the misty refrigerant mixed into the evaporation gas and introduced into the liquid separator is evaporated by sufficient heat exchange effect with the high temperature and high pressure liquid refrigerant stored in the receiver. Can further improve the freezing capacity of the.
  • FIG. 1 is a refrigeration cycle system diagram of a refrigeration apparatus for explaining the present invention
  • FIG. 2 is a front sectional view of a transverse liquid column for a refrigerator according to a first embodiment of the present invention.
  • FIG. 3 is a cross-sectional view taken along the line A-A of FIG.
  • FIG. 4 is a sectional front view of a vertical type (heater type) liquid heater for a refrigerating device according to a second embodiment of the present invention.
  • FIG. 5 is a cross-sectional view taken along the line B-B in FIG.
  • FIG. 6 is a sectional front view of a transverse liquid column for a refrigerator according to a third embodiment of the present invention.
  • FIG. 7 is a perspective view of the diaphragm installed in the liquid separator of the embodiment of Figure 6,
  • FIG. 8 is a cross-sectional view taken along the line C-C of FIG.
  • Fig. 9 is a front sectional view of a vertical type liquid column for a refrigerating device showing a fourth embodiment of the present invention.
  • reference numeral 1A denotes a horizontal type heat sink and 1B denotes a vertical type heat sink, and both the horizontal type and vertical type heat sinks 1A and 1B are installed to be exposed to the outside.
  • a liquid separator 3 installed to be embedded in a concealed state inside the receiver 2, wherein the horizontal type is a central axis of the liquid heater 1A formed of a cylindrical body. It means to be installed horizontally, and vertical or vertical means to be installed so that the central axis of the cylinder is set up vertically.
  • the gas refrigerant compressed at high temperature and high pressure in the compressor 4 of the refrigerating cycle is fed to the condenser 5, condensed at high temperature and high pressure, and then transferred to the receiver 2.
  • the high temperature and high pressure liquid refrigerant stored in the above is transferred to the expansion valve (6), and the expansion valve (6) rapidly expands the liquid refrigerant into a fog state and transfers it to the evaporator (7), and the evaporator (7).
  • the gas refrigerant transferred to the liquid separator 3 is again transferred to the compressor 4 to be compressed at high temperature and high pressure.
  • liquid refrigerant in the mist state mixed with the gas refrigerant stored in the liquid separator 3 must be completely vaporized to prevent the liquid refrigerant from being transferred to the compressor 4, thereby preventing the compressor 4 from being transferred. Failure factors can be prevented in advance.
  • a characteristic of the present invention is that the liquid in the mist state that is incorporated without being vaporized into the gas refrigerant vaporized by evaporating the external heat when passing through the evaporator 7, and is transferred to the liquid separator 3 together with the gas refrigerant.
  • the refrigerant can be evaporated completely by using a high temperature and high pressure liquid refrigerant which is transferred and stored from the condenser 5 to the receiver 2 so as to sufficiently and efficiently exchange heat.
  • the horizontal type column receiver 1A is formed in a structure in which the receiver 2 and the liquid separator 3 are installed horizontally, and the upper part of the receiver 2 is provided.
  • the outer side of the connector 21 formed on one side is connected to the outlet line 51 of the condenser 5, and the refrigerant inlet 81 of the liquid refrigerant injection pipe (8a) is connected to the inner portion of the connector 21 Is connected, the liquid refrigerant injection pipe (8a) is extended to cover the entire length of the liquid separator (3) along the longitudinal direction to the upper portion of the liquid separator (3), and the liquid refrigerant injection pipe In the 8a, a plurality of injection holes 82 are formed at regular intervals along the longitudinal direction.
  • the high temperature and high pressure liquid refrigerant transferred from the condenser 5 is introduced into the liquid refrigerant injection pipe 8a through the refrigerant inlet 81 and then the liquid separator 3 through the plurality of injection holes 82. Evenly spread the liquid refrigerant over the entire top surface of the
  • a liquid refrigerant is evenly sprayed toward the entire upper surface along the axial direction of the liquid separator 8a through a plurality of injection holes 82 formed in the liquid refrigerant injection pipe 8 on the outer circumference of the liquid separator 3.
  • Spiral heat dissipation fin (3a) is formed to guide so that the evenly distributed downward flow.
  • the spiral heat dissipation fin 3a which is one of the gist configurations of the present invention, is formed in a spiral wound structure on the cylindrical outer periphery of the liquid separator 3, and is mounted by welding to closely adhere to the cylindrical outer periphery of the liquid separator 3 (at this time) It can be mounted simply by welding both ends of the spiral radiating fins), thereby spiral spiral fins spirally wound liquid liquid injected from a plurality of injection holes 82 formed in the liquid refrigerant injection pipe (8a) It flows down from the top to the bottom along the guide of the spiral passage formed between, wherein the cylindrical body of the liquid separator 3 maintains even contact of the liquid refrigerant over the entire length.
  • a liquid refrigerant suction tube 9a is formed horizontally in a space between the liquid separator 2 and the liquid separator 3 at an inner lower side of the receiver 2, and the liquid refrigerant suction tube 9a of the liquid refrigerant suction tube 9a.
  • a plurality of suction holes 91 are formed at a predetermined interval so as to suck the liquid refrigerant stored therein and transfer the liquid refrigerant to the expansion valve 6 side, and a refrigerant outlet formed at one end of the liquid refrigerant suction pipe 9a.
  • 92 is connected to the inlet line 61 of the expansion valve 6.
  • the cylindrical inner surface of the liquid separator 3 is formed in a radial shape protruding toward the center of the plurality of heat radiation fins 31 are formed to extend in the axial direction at a predetermined interval, the outlet line 71 of the evaporator 7 ) Extends through the receiver 2 to the inside of the liquid separator 3 to supply gas refrigerant transferred from the evaporator 7 to the inside of the liquid separator 3.
  • the inlet line 41 extends through the receiver 2 on the opposite side of the evaporator outlet line 71 and enters into the liquid separator 3 so that the outlet line 71 of the evaporator 7 is formed.
  • the gas refrigerant flowing into the liquid separator 3 through) is transferred to the compressor 4 through the inlet line 41 of the compressor 4.
  • liquid refrigerant injection pipe (8a) and the liquid refrigerant suction pipe (9a) can be formed of a rectangular cross-section pipe or a circular cross-section pipe, it is also used in the form of a rod extending in a straight line.
  • the liquid refrigerant condensed at a high temperature and high pressure in the condenser 5 and transferred to the outlet line 51 is introduced into the liquid refrigerant injection pipe 8a, and then a plurality of injection holes.
  • liquid refrigerant injected through the plurality of injection holes 82 is formed spirally wound on the outer periphery of the liquid separator 3 As the liquid refrigerant flows down from the upper part to the lower part along the outer circumference of the liquid separator 3 along the spiral path formed between the spiral heat dissipation fins 3a, the sprayed liquid refrigerant flows down the entire outer circumference of the liquid separator 3 evenly.
  • the liquid refrigerant injected through the liquid refrigerant injection pipe 8a and stored in the receiver 2 is sucked through the plurality of suction holes 92 formed in the liquid refrigerant suction pipe 9a to inlet the expansion valve.
  • the circulation process which is transferred to the expansion valve 6 through the line 61 and expanded, is introduced into the liquid separator 3 through the evaporator 7, and is repeated.
  • the vertical type heat receiver 1B is formed in a structure in which the receiver 2 and the liquid separator 3 having a double pipe structure are installed vertically, and on the upper side of the receiver 2, a condenser 5 is formed. Is connected in a state where the outlet line 51 passes through, and an end of the condenser outlet line 51 is positioned above the inside of the receiver 2 and horizontally above the liquid separator 3. It is connected to the refrigerant inlet 81 of the liquid refrigerant injection pipe 8b installed.
  • the liquid refrigerant injection pipe 8b is formed in an annular shape (ring shape), and at the bottom thereof, a plurality of injection holes 82 are provided to evenly spray the liquid refrigerant over the entire upper surface of the liquid separator 3. Formed.
  • a liquid refrigerant suction pipe 9b horizontally formed at a position lower than the lower portion of the liquid separator 3 in a lower position inside the receiver 2 is horizontally provided, and the liquid refrigerant suction pipe 9b is provided.
  • the outlet 92 is connected to the inlet line 61 of the expansion valve 6.
  • Spiral heat dissipation fins 3b are also wound in a spiral form on the outer periphery of the cylinder of the liquid separator 3 of the vertical type heat exchanger 1B. Accordingly, when the liquid refrigerant injected through the plurality of injection holes 82 formed in the liquid refrigerant injection pipe 8b flows down the outer circumference of the cylinder along the upper surface of the liquid separator 3, the spiral of the spiral heat dissipation fin 3b is formed.
  • the high temperature liquid refrigerant injected into the upper surface of the liquid separator (3) is a spiral passage formed by the spiral heat radiation fin (3b)
  • the cylindrical body of the liquid separator 3 is evenly heated while flowing downward in a spiral toward the lower portion, and a misty liquid refrigerant mixed with the gas refrigerant introduced into the liquid separator 3 is heated by the heating heat.
  • the liquid refrigerant remaining in the liquid separator 3 absorbs heat necessary for vaporization and vaporizes through the inlet line 41 of the compressor 4. Is fed to the compressor (4).
  • the liquid refrigerant introduced into the receiver 2 through the annular liquid refrigerant injection pipe 8b is sucked into the plurality of suction holes 91 formed in the liquid refrigerant suction pipe 9b and the refrigerant outlet 92.
  • Is fed to the expansion valve (6) through the expansion valve inlet line 61 is connected to the expansion valve 6 is rapidly expanded in the expansion valve (6) is supplied to the evaporator (7).
  • a plurality of heat dissipation fins 31 are also formed on the inner surface of the cylinder of the liquid separator 3 of the vertical column type heat exchanger 1B, and the outlet line 71 of the evaporator 7 has an upper portion of the receiver 3.
  • the liquid refrigerant condensed at high temperature and high pressure in the condenser 5 and transferred through the outlet line 51 is the liquid refrigerant powder disposed in the receiver 2. It is evenly sprayed on the entire upper surface of the liquid separator 3 through the plurality of injection holes 82 formed in the yarn tube 8a.
  • the hot liquid refrigerant injected onto the upper surface of the liquid separator 3 is spirally formed from the top of the liquid separator to the bottom by the spiral heat radiating fins 3b when flowing down to the outer circumference of the cylinder of the liquid separator 3.
  • the liquid separator 3 is heated while flowing down the passage.
  • the gas refrigerant including some liquid refrigerant introduced into the liquid separator 3
  • the gas refrigerant is mixed into the gas refrigerant transferred from the evaporator 7 to the liquid separator 3. Since the liquid refrigerant in the mist state receives enough heat to vaporize and all vaporizes and evaporates, only the gas refrigerant is transferred to the compressor 4, thereby preventing the failure of the compressor in advance, thereby improving the compression efficiency of the compressor. It is to be able to improve the freezing capacity of the freezing device.
  • FIG. 6 is a sectional front view of a transverse type heat receiver 101A for a refrigerating device according to a third embodiment of the present invention.
  • the invention of the embodiment improves the invention of the first embodiment shown in FIG. 2 more efficiently. will be.
  • the horizontal type heat receiver 101A has a receiver 102 which is installed to be exposed to the outside and a liquid separator 103 which is installed to conceal the inside of the receiver 102 in a double pipe structure.
  • the hot air 101A is fixedly installed in a horizontal state (the central axis of the cylindrical structure is positioned horizontally) at the bottom of the refrigerating device by a pedestal 120 fixedly welded to the bottom of the receiver 102.
  • the receiver 102 is formed in a tank-type structure sealed by the cylindrical body 121 and the seals 122 and 123 welded to both ends thereof, and the liquid separator 103 is also a cylindrical body ( 131 and the sealing parts 132 and 133 welded to both ends thereof are formed in a tank-type structure sealed.
  • the liquid refrigerant inlet 124 and the liquid refrigerant outlet 125 are formed at both sides of the upper portion of the cylindrical body 121 of the receiver 102, and the outlet line 51 of the condenser 5 is formed at the liquid refrigerant inlet 124. ) Is connected and the inlet line 61 of the expansion valve 6 is connected to the liquid refrigerant outlet 125.
  • the liquid refrigerant injection pipe 126 extends horizontally along the axial direction so as to cover the entire length of the liquid separator 103 so as to be located above the liquid separator 103 at an upper side of the receiver 102. Is installed, the inlet pipe 261 formed at one end (left side in the drawing) of the liquid refrigerant injection pipe 126 is connected to the liquid refrigerant inlet 124, and the liquid refrigerant injection pipe 126 is a condenser ( A plurality of refrigerant injection holes 262 for injecting the liquid refrigerant flowing through the outlet line 51 of 5) over the entire upper surface of the liquid separator 103 is formed.
  • the liquid refrigerant suction pipe 127 for transferring the liquid refrigerant introduced into the receiver 102 to the expansion valve 6 in the lower portion of the liquid separator 103 in the axial direction. It is horizontally installed along one end of the liquid refrigerant suction pipe 127 (right end relative to the drawing) is formed with a discharge pipe 271 connected to the liquid refrigerant outlet 125, the liquid refrigerant suction pipe 127 In the liquid receiver 102, a plurality of refrigerant suction holes 272 are formed for the purpose of sucking and transferring the liquid refrigerant flowing into the receiver 102 to the outside.
  • the gas coolant inlet 134 and the gas coolant outlet 135 communicate with the inside of the liquid separator 103 at both sealing parts 132 and 133 welded to both ends of the cylindrical body 131 of the liquid separator 103. It is formed to.
  • the gas refrigerant inlet 134 is connected to the outlet line 71 of the evaporator 7, so that the vaporized gas (gas refrigerant) transferred from the evaporator 7 along the line 71 is separated from the liquid separator 103. ) It is configured to enter inside.
  • the gas coolant outlet 135 is connected to the inlet line 41 of the compressor 4 and its open free end is sealed of the seal 122 and the liquid separator 103 of the receiver 102.
  • one end of the gas coolant outlet 135 entered into the liquid separator 103 is the open end 351 of the liquid It is formed as a U-shaped curved pipe so as to be located above the separator 103, and an oil recovery hole 352 is formed at the lower end of the U-shaped curved pipe of the gas coolant outlet 135 so that the liquid separator 103 can be formed.
  • the remaining oil is configured to be transferred to the compressor 4 through the oil recovery hole 352 by the negative pressure caused by the flow rate of the gas refrigerant flowing through the gas refrigerant outlet 135.
  • the liquid separator 103 is provided with a plurality of diaphragms 108a having an outer diameter contacting the inner surface of the cylindrical body at predetermined intervals.
  • the plurality of diaphragms as one of the gist configurations of the present invention as shown in FIG.
  • Each of the diaphragms 108a has a horizontal cross-section 181 formed as a part of the incision, and the outer circumferential surface of each of the plurality of diaphragms 108a is heated so that the contact surface with the inner surface of the liquid separator 103 is widened.
  • An arc surface 182 is formed to increase the area.
  • the plurality of diaphragms 108a are fixedly installed on the support shaft 183 so as to maintain a predetermined interval, and are assembled in the liquid separator 3, wherein the support shaft 183 is the center of each of the plurality of diaphragms 108a. It is fitted in the state passing through, and the plurality of diaphragm 108a is fixed to the support shaft 183 by welding so as not to move.
  • the plurality of diaphragms 108a are assembled to the support shaft 183 such that neighboring ones of the plurality of diaphragms 108 are alternately positioned above and below (see FIG. 7), and among the plurality of diaphragms 108a.
  • An oil recovery groove 184 is formed on the circular arc surface 182 of the diaphragm 108a which contacts at least the inner surface lower side of the liquid separator 103, and through the oil recovery groove 184, the liquid separator 103. The oil that accumulates at the bottom of the inner side is allowed to move axially toward the oil return hole 352 side.
  • the plurality of diaphragms 108a fixed to the support shaft 183 at predetermined intervals are first inserted in both open ends of the cylindrical body 131 of the liquid separator 103, and the plurality of diaphragms 108a.
  • the diaphragms 108a-1 and 108a-2 located at both ends of each of the two ends of the diaphragm are generally welded to the inner surface of the cylindrical body 131 of the liquid separator 103 so that the support shaft ( 183 and the plurality of diaphragms 108a are fixedly installed without movement in the liquid separator 103.
  • the refrigerant flow passage 109a is formed inside the liquid separator 103 by a plurality of diaphragms 108a installed in the liquid separator 103 in a state of being fixedly attached to the support shaft 183 at a predetermined interval. It is formed zigzag. Accordingly, the gas refrigerant flowing into the liquid separator 103 through the gas refrigerant inlet 134 ⁇ flows in a zigzag state along the refrigerant flow passage 109a formed by the plurality of diaphragms 108a, thereby separating the liquid separator 103.
  • the time for contacting the plurality of diaphragms 108a is greatly increased, so that the heat exchange with the liquid refrigerant of the high temperature and high pressure stored in the fluid receiver 102 is performed well.
  • the vaporization of the liquid refrigerant remaining in the interior is promoted, and by this promotion of vaporization, only the vaporized evaporated gas (gas refrigerant) is discharged through the gas coolant outlet 135 of the liquid separator 103. Accordingly, since only the gas refrigerant is transferred to the compressor 4, the refrigerant compression efficiency of the compressor 4 and the refrigerating capacity of the refrigerating device are also improved.
  • the third embodiment of the present invention The plurality of diaphragms 108a structure of the example configuration is easy to mount, the discharge path of the refrigerant gas is long and the contact time with the diaphragms is long to ensure a relatively high heat exchange efficiency.
  • the biggest feature of the transverse liquid column 101A according to the third embodiment is that the gas coolant inlet 134 of the liquid separator 103 enters into the liquid separator 103. Inflow of the gas refrigerant hits the plurality of diaphragms 108a to cause resistance to the flow rate toward the outlet side, and at the same time, the gas refrigerant passes through the liquid separator 103 in a zigzag to open the gas refrigerant outlet 135. It is to delay the time that the gas refrigerant stays inside the liquid separator 103 until it is discharged through.
  • the low-temperature low-pressure gas refrigerant (which includes a part of the liquid refrigerant) introduced into the liquid separator 103 has a good heat exchange effect with the high-temperature and high-pressure liquid refrigerant stored in the fluid receiver 102 so as to be sufficiently vaporized. Only the gas refrigerant evaporated (vaporized) is discharged through the gas refrigerant outlet 135.
  • spiral heat dissipation fin 136 is formed on the outer circumferential surface of the cylindrical body 131 of the liquid separator 103, which is spirally wound, which is one of the important components of the present invention. Since the configuration is the same as in the first embodiment, repeated description is omitted.
  • the vertical type column receiver 101B shown in FIG. 9 is an improvement of the vertical column type column receiver 1B according to the second embodiment shown in FIG. 4, and the configuration of the horizontal column type column receiver 101A described in the description thereof.
  • the same parts as those of the elements will be described using the same reference numerals and names. Therefore, when reference numerals not shown in FIG. 9 are cited, the corresponding components of FIGS. 6 and 7 will be referred to.
  • the vertical type heat receiver 101B has a receiver 102 installed to be exposed to the outside and a liquid separator 103 installed to conceal the inside of the receiver 102 in a double pipe structure.
  • the hot air 101B is fixedly installed in a vertical state to the bottom of the freezing apparatus by a pedestal 120 fixedly attached to the bottom of the receiver 102 by welding.
  • the receiver 102 of the vertical heat receiver 101B has a cylindrical body 121 in which a central axis is vertically positioned as shown in FIG. 9, an upper seal 122 welded to an open upper end thereof, and an opening thereof. It is formed in a closed tank structure by the lower sealing portion 123 is welded to the lower end, the liquid separator 103 is also in the cylindrical body 131 and the sealing portion 132, 133 welded to the upper and lower ends thereof, respectively. By a closed tank structure.
  • a liquid coolant inlet 124 is formed at the upper part of the receiver 102 of the vertical type column receiver 101B to which the outlet line 51 of the condenser 5 is connected, and the lower part of the receiver 102 is expanded.
  • the liquid refrigerant outlet 125 to which the inlet line 61 of the valve 6 is connected is formed.
  • the liquid refrigerant injection pipe 126 is formed in the space between the upper sealing part 122 of the receiver 102 and the upper sealing part 132 of the liquid separator 103, and the liquid refrigerant injection pipe 126 is provided. Is connected to the liquid refrigerant inlet 124, and the liquid refrigerant flowing from the liquid refrigerant inlet 124 is injected into the liquid refrigerant inlet 124 toward the center of the upper seal 132 of the liquid separator 103. The tip is opened or a refrigerant jet hole (see 262 in Fig. 6) is formed like a shower.
  • the liquid refrigerant introduced into and stored in the receiver 102 is expanded.
  • the liquid refrigerant suction pipe 127 is formed to be transferred to the liquid refrigerant suction pipe 127 is connected to the expansion valve (6) through the liquid refrigerant outlet 125 and the line 61, and
  • the liquid refrigerant suction pipe 127 is provided with a plurality of refrigerant suction holes 272 for sucking the liquid refrigerant stored in the receiver 102.
  • a gas coolant inlet 134 and a gas coolant outlet 135 are formed in an upper seal 132 welded to the upper side of the cylindrical body 131 of the liquid separator 103, and the gas coolant inlet 134 is an evaporator ( 7 is connected to the outlet line 71 of the evaporator 7, and the evaporated gas (gas refrigerant) transferred through the outlet line 71 of the evaporator 7 is introduced into the liquid separator 103, and the gas coolant outlet ( 135 is connected to the inlet line 41 of the compressor 4 to discharge the gas refrigerant flowing into the liquid separator 103 to the compressor 4 side through the inlet line 41 of the compressor 4. It is configured to.
  • spirally wound spiral fins 136 wound by a spiral which is one of the important technical features of the present invention, is mounted by welding, similar to the above-described transverse type heater 101A. have.
  • the gas refrigerant inlet 134 is connected to the boil-off gas inlet pipe 137 vertically installed downward toward the inside of the liquid separator 103 and open at the lower end thereof, and the liquid separator 103 is connected to the gas refrigerant outlet 135.
  • the evaporation gas discharge pipe 138 which is installed downward in a U-shape toward the inside of the U) is connected, and an end 381 of the U-shaped curved pipe is open.
  • a plurality of diaphragms 108b having an outer diameter in close contact with the cylindrical inner surface of the liquid separator 103 are inserted and installed at regular intervals, and each of the plurality of diaphragms 108b is cut in a nail shape.
  • a vertical cross section 185 is formed, and an outer circumferential surface of each of the plurality of diaphragms 108b has a circular arc surface 182 for increasing the heat transfer area by making the contact surface with the inner surface of the liquid separator 103 wider. Is formed.
  • a plurality of holes are formed in each of the plurality of diaphragms 108b through which the boil-off gas inlet pipe 137 and the boil-off gas discharge pipe 138 vertically installed in the liquid separator 103 are formed.
  • the diaphragms 108b are fitted to the boil-off gas inlet pipe 137 and the boil-off gas discharge pipe 138 to be fixed to maintain a predetermined interval, whereby the boil-off gas inlet pipe 137 and the boil-off gas discharge pipe 138 are It also serves as a support shaft for mounting the diaphragms 108b, and the open ends of the boil-off gas inlet pipe and the boil-off gas discharge pipe are installed to be opposite to each other with the diaphragm interposed therebetween.
  • the plurality of diaphragms 108b are installed such that vertical sections 181 are alternately positioned at left and right sides of one another adjacent to each other up and down, and the discharge end 371 of the boil-off gas inlet pipe 137 is the lowest. It is installed to be located below the diaphragm 108b-1 (represented by reference numeral '108b' when representatively described) on the side, and the inlet end 381 of the U-shaped curved pipe of the boil-off gas discharge pipe 138 is the uppermost side.
  • Evaporation gas discharge pipe 138 is installed so as to be located on the upper side of the diaphragm 108b-2 (represented by reference numeral '108b' in the description), and to recover the oil accumulated in the liquid separator 103.
  • the oil recovery hole 382 is formed at the bending point of the U-shaped curved pipe, more precisely, at the bending point of the U-shaped curved pipe that protrudes closer to the sealing portion 133 below the lowermost partition 108b-1.
  • the refrigerant flow passage 109b is formed in a zigzag along the axial direction by the plurality of diaphragms 108b fixed to the inside of the liquid separator 103 at fixed intervals.
  • the gas refrigerant flowing into the liquid separator 103 through the gas refrigerant inlet 134 ⁇ flows into the lower side of the lower diaphragm 108b-1 through the discharge end 371 of the boil-off gas inlet pipe 137 and then, Zigzag flows upward along the refrigerant flow passage 109b, which is formed by the diaphragm 108b, the upper and lower passages communicating in an up and down direction toward the upper portion, thereby increasing the time for staying inside the liquid separator 103.
  • the vertical type columnar heater 101B is characterized in that resistance is generated in the flow rate of the gas refrigerant flowing into the liquid separator 103 through the gas refrigerant inlet 134 of the liquid separator 103.
  • resistance is generated in the flow rate of the gas refrigerant flowing into the liquid separator 103 through the gas refrigerant inlet 134 of the liquid separator 103.
  • the gas refrigerant stays inside the liquid separator 103 until it is discharged through the gas coolant outlet 135 to include low temperature low pressure mist gas refrigerant (liquid refrigerant) introduced into the liquid separator 103.
  • Heat exchange with the high temperature and high pressure liquid refrigerant stored in the receiver 102 is well evaporated to ensure that only the evaporated (vaporized) gas refrigerant is discharged through the gas coolant outlet 135 Is in.
  • the liquid heater of the present invention can be used to increase the refrigeration efficiency of the refrigerating device.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Power Engineering (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

La présente invention concerne un échangeur de chaleur pour dispositif de réfrigération. L'échangeur de chaleur pour dispositif de réfrigération comprend : un récepteur de liquide, servant à stocker un réfrigérant fluide condensé dans un condenseur et à transférer le réfrigérant fluide dans un détendeur ; et un séparateur de liquide, servant à stocker les gaz d'évaporation évaporés dans un évaporateur et à transférer les gaz d'évaporation dans un compresseur. L'invention concerne également un échangeur de chaleur de type horizontal pour dispositif de réfrigération, présentant une structure de tuyauterie double dans laquelle ledit séparateur de liquide est inséré dans ledit récepteur de liquide, et pour lequel une ligne axiale centrale de ladite tuyauterie double est définie horizontalement. L'échangeur de chaleur de type horizontal comprend : un orifice d'entrée de réfrigérant, disposé horizontalement dans un espace supérieur entre ledit séparateur de liquide et ledit récepteur de liquide, l'orifice d'entrée de réfrigérant étant connecté à une ligne de sortie dudit condenseur ; un tuyau d'injection de réfrigérant fluide, comportant une pluralité de trous d'injection servant à pulvériser de manière uniforme le réfrigérant fluide transféré depuis ledit condenseur sur la partie supérieure dudit séparateur de liquide ; un tuyau d'aspiration de réfrigérant fluide incluant un orifice de sortie de réfrigérant disposé horizontalement dans un espace inférieur entre ledit séparateur de liquide et ledit récepteur de liquide, l'orifice de sortie de réfrigérant étant connecté à une ligne d'entrée du détendeur ; et une pluralité de trous d'aspiration servant à aspirer le réfrigérant fluide de façon à transférer le réfrigérant fluide stocké dans la partie inférieure de l'intérieur dudit récepteur de liquide vers ledit détendeur ; et une ailette de puits de chaleur en spirale qui est enroulée en spirale autour de la circonférence externe dudit séparateur de liquide de telle sorte que le réfrigérant fluide injecté à travers la pluralité de trous d'injection formés dans ledit tuyau d'injection de réfrigérant fluide soit guidé de façon à s'écouler vers le bas le long de la circonférence dudit séparateur de liquide après que le réfrigérant fluide s'écoule et descende sur la partie supérieure dudit séparateur de liquide. En outre, plusieurs parois de séparation sont installées à une distance prédéterminée de façon à former un passage en zigzag dans ledit séparateur de liquide.
PCT/KR2012/002790 2011-04-18 2012-04-13 Échangeur de chaleur pour dispositif de réfrigération WO2012144767A2 (fr)

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KR1020120014631A KR101355431B1 (ko) 2012-02-14 2012-02-14 냉동장치용 액열기
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Publication number Priority date Publication date Assignee Title
EP3447426A3 (fr) * 2017-08-24 2019-06-19 Mitsubishi Heavy Industries Thermal Systems, Ltd. Échangeur de chaleur à double tube, système d'échange de chaleur le comprenant et procédé d'assemblage d'un échangeur de chaleur à double tube
CN109974355A (zh) * 2019-04-16 2019-07-05 西北工业大学 一种气液分离器
CN112041621A (zh) * 2018-05-08 2020-12-04 金奉奭 冷冻装置的热交换器
CN113790614A (zh) * 2021-10-22 2021-12-14 广东美的暖通设备有限公司 一种罐式换热器及热泵系统

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JPH05256524A (ja) * 1991-03-01 1993-10-05 Orion Mach Co Ltd 圧縮空気除湿装置用熱交換器の構造
JP2001066022A (ja) * 1999-08-25 2001-03-16 Showa Alum Corp 熱交換器
US6463757B1 (en) * 2001-05-24 2002-10-15 Halla Climate Controls Canada, Inc. Internal heat exchanger accumulator

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Publication number Priority date Publication date Assignee Title
JPH05256524A (ja) * 1991-03-01 1993-10-05 Orion Mach Co Ltd 圧縮空気除湿装置用熱交換器の構造
JP2001066022A (ja) * 1999-08-25 2001-03-16 Showa Alum Corp 熱交換器
US6463757B1 (en) * 2001-05-24 2002-10-15 Halla Climate Controls Canada, Inc. Internal heat exchanger accumulator

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3447426A3 (fr) * 2017-08-24 2019-06-19 Mitsubishi Heavy Industries Thermal Systems, Ltd. Échangeur de chaleur à double tube, système d'échange de chaleur le comprenant et procédé d'assemblage d'un échangeur de chaleur à double tube
CN112041621A (zh) * 2018-05-08 2020-12-04 金奉奭 冷冻装置的热交换器
CN112041621B (zh) * 2018-05-08 2022-04-29 金奉奭 冷冻装置的热交换器
CN109974355A (zh) * 2019-04-16 2019-07-05 西北工业大学 一种气液分离器
CN113790614A (zh) * 2021-10-22 2021-12-14 广东美的暖通设备有限公司 一种罐式换热器及热泵系统

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