EP2863161A1 - Échangeur de chaleur et procédé d'échange de chaleur - Google Patents
Échangeur de chaleur et procédé d'échange de chaleur Download PDFInfo
- Publication number
- EP2863161A1 EP2863161A1 EP20120875231 EP12875231A EP2863161A1 EP 2863161 A1 EP2863161 A1 EP 2863161A1 EP 20120875231 EP20120875231 EP 20120875231 EP 12875231 A EP12875231 A EP 12875231A EP 2863161 A1 EP2863161 A1 EP 2863161A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- heat exchange
- pipe
- refrigerant
- pipes
- function surface
- 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
Links
- 238000000034 method Methods 0.000 title claims description 11
- 239000003507 refrigerant Substances 0.000 claims abstract description 68
- 230000005484 gravity Effects 0.000 abstract description 9
- 238000009826 distribution Methods 0.000 description 29
- 239000007788 liquid Substances 0.000 description 18
- 239000012071 phase Substances 0.000 description 10
- 238000010438 heat treatment Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 230000001747 exhibiting effect Effects 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 230000005514 two-phase flow Effects 0.000 description 1
Images
Classifications
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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
- F28D7/16—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 in parallel spaced relation
-
- 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
- F28F9/26—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/14—Heat exchangers specially adapted for separate outdoor units
- F24F1/16—Arrangement or mounting thereof
-
- 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
- F25B39/028—Evaporators having distributing means
-
- 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
- F28D1/00—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 is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—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 is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/04—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 is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
- F28D1/0408—Multi-circuit heat exchangers, e.g. integrating different heat exchange sections in the same unit or heat exchangers for more than two fluids
- F28D1/0417—Multi-circuit heat exchangers, e.g. integrating different heat exchange sections in the same unit or heat exchangers for more than two fluids with particular circuits for the same heat exchange medium, e.g. with the heat exchange medium flowing through sections having different heat exchange capacities or for heating/cooling the heat exchange medium at different temperatures
-
- 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
- F28D1/00—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 is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—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 is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/04—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 is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
- F28D1/0408—Multi-circuit heat exchangers, e.g. integrating different heat exchange sections in the same unit or heat exchangers for more than two fluids
- F28D1/0426—Multi-circuit heat exchangers, e.g. integrating different heat exchange sections in the same unit or heat exchangers for more than two fluids with units having particular arrangement relative to the large body of fluid, e.g. with interleaved units or with adjacent heat exchange units in common air flow or with units extending at an angle to each other or with units arranged around a central element
-
- 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
- F28D1/00—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 is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—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 is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/04—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 is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
- F28D1/053—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 is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
- F28D1/0535—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 is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight the conduits having a non-circular cross-section
- F28D1/05366—Assemblies of conduits connected to common headers, e.g. core type radiators
-
- 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
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/12—Inflammable refrigerants
- F25B2400/121—Inflammable refrigerants using R1234
-
- 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
- F28F9/02—Header boxes; End plates
- F28F9/026—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits
- F28F9/027—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits in the form of distribution pipes
- F28F9/0273—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits in the form of distribution pipes with multiple holes
Definitions
- the present invention relates to a heat exchanger and a heat exchange method.
- a parallel flow type heat exchanger As one type of the heat exchanger, a parallel flow type heat exchanger is given.
- This heat exchanger includes a pair of header pipes, and a plurality of flat pipes provided between those header pipes. This heat exchanger is configured so that after a fluid, which has flowed into one of the headers, flows through the plurality of flat pipes, the fluid flows out to the other of the header pipes.
- the parallel flow type heat exchanger may have such a structure that the pair of header pipes is horizontally arranged, to thereby suppress the influence of the gravity mutually between the plurality of flat pipes.
- an existing outdoor unit of an air conditioner may have such a structure that heat exchange surfaces are arranged in a plurality of surfaces of a housing of the outdoor unit.
- the above-mentioned parallel flow type heat exchanger having the pair of header pipes horizontally arranged is caused to exert its function in the plurality of surfaces of the housing of the outdoor unit, it is necessary to curve each of the header pipes along the plurality of surfaces.
- the header pipe is curved into, for example, an L-shape or a U-shape, significant loads are applied, and hence there arise problems in that the apparatus is upsized and cost is increased.
- Patent Literature 1 a heat exchanger disclosed in Patent Literature 1 is given.
- a pair of header pipes has been prepared separately for each of a plurality of surfaces.
- Patent Literature 1 has employed such a mode that after the refrigerant, which has flowed through a plurality of flat pipes in certain one surface (first surface), is collected to the header pipe on the outflow side of the one surface (first surface), the refrigerant is guided from this header pipe to the header pipe on the inflow side of the next surface (second surface) and distributed through a plurality of flat pipes of the next surface (second surface), and subsequently, the refrigerant is likewise guided to the next surface in sequence depending on the number of surfaces.
- the present invention has been made in view of the foregoing, and it is therefore an object of the present invention to provide a heat exchanger and the like, each of which is capable of suppressing, even with a plurality of heat exchange function surface units, an influence of the gravity exerted on refrigerant, and suppressing reduction of heat exchange performance in each of the surfaces.
- a heat exchanger comprising: a plurality of heat exchange function surface units; each of the plurality of heat exchange function surface units having an upper header pipe, a lower header pipe, and a plurality of heat exchange pipes provided between a pair of the upper header pipe and the lower header pipe; the plurality of heat exchange function surface units having a parallel connection relationship; a plurality of the lower header pipes being connected to a lower collection pipe through a branch current adjusting section.
- a heat exchange method of carrying out heat exchange in a plurality of surfaces including: preparing an upper header pipe, a lower header pipe, and a plurality of heat exchange pipes provided between a pair of the upper header pipe and the lower header pipe in each of a plurality of heat exchange function surface units; connecting the plurality of heat exchange function surface units in parallel, and connecting a plurality of the lower header pipes to a lower collection pipe through a branch current adjusting section; and branching, by the branch current adjusting section, refrigerant inside the lower collection pipe in parallel to the plurality of heat exchange function surface units, subjecting the refrigerant to the heat exchange in the each of the plurality of heat exchange function surface units, and causing the refrigerant to flow out from a plurality of the upper header pipes so as to be joined together to an upper side collection pipe.
- the present invention it is possible to suppress, even with the plurality of heat exchange function surface units, the influence of the gravity exerted on the refrigerant, and suppress the reduction of the heat exchange performance in each of the surfaces.
- FIG. 1 is a view illustrating a structure of a heat exchanger according to a first embodiment of the present invention.
- the heat exchanger of this embodiment functions as an outdoor unit of an air conditioner that is installed in a space of intended use, and carries out heating and cooling. Therefore, the heat exchanger is a parallel flow type heat exchanger in which when the heat exchanger operates as a condenser in a phase of the cooling, refrigerant flows from the top to the bottom as indicated by dotted line arrows in FIG. 1 , and when the heat exchanger operates as an evaporator in a phase of the heating, the refrigerant flows from the bottom to the top as indicated by solid line arrows in FIG. 1 .
- a heat exchanger 1 has a plurality of heat exchange function surface units 3. Note that, FIG. 1 illustrates an example in which three heat exchange function surface units 3 are provided. In addition, in the example of FIG. 1 , the adjacent heat exchange function surface units 3 are structured so as to be directed orthogonal to each other.
- An upper header pipe 5, a lower header pipe 7, and a plurality of heat exchange pipes 9 provided between the pair of upper and lower header pipes 5, 7 are provided in each of the heat exchange function surface units 3. Specifically, a flat pipe is used as the heat exchange pipe 9. A fin 11 (specifically, a corrugated fin) is provided between the heat exchange pipes 9.
- One end of an upper communication pipe 13 is connected to each of the upper header pipes 5.
- the other end side of the upper communication pipe 13 is connected to an upper collection pipe 15.
- Each of the lower header pipes 7 is connected to a lower collection pipe 19 through a branch current adjusting section 17 described later.
- the plurality of heat exchange function surface units 3 are arranged in a parallel connection relationship between the upper collection pipe 15 and the lower collection pipe 19. Note that, although an illustration is omitted, it is assumed that a pair of the adjacent heat exchange function surface units 3 is covered with a blocking member such as a metallic plate so that the fluid to be subjected to the heat exchange is not bypassed.
- the branch current adjusting section 17 serves to adjust a dryness and a flow rate of the refrigerant to be supplied to the plurality of lower header pipes 7. Note that, as an example, this embodiment is described in the form of a configuration in which when the refrigerant flows from the bottom to the top in the phase of the heating, gas-liquid two phase refrigerant is supplied to the plurality of heat exchange function surface units 3 with the equal dryness and flow rate.
- the branch current adjusting section 17 includes a distributer 21 and at least one (two in the illustration) flow rate adjusting section 23.
- One end side of the distributer 21 is connected to the lower collection pipe 19, and a plurality of connection ports on the other end side thereof are connected to ends on one side of corresponding lower communication pipes 25.
- ends on the other side of the lower communication pipes 25 are connected to collection side inlet and outlet ports 7a of the corresponding lower header pipes 7, respectively.
- the distributer 21 connected in such a manner supplies the refrigerant to the plurality of lower communication pipes 25 with the equal dryness.
- a capillary is used as the flow rate adjusting section 23.
- the flow rate adjusting section 23 is provided between the distributer 21 and the corresponding lower header pipe 7, that is, in the lower communication pipe 25, the flow rate adjusting section 23 is not necessarily arranged in all the lower communication pipes 25.
- the collection side inlet and outlet port 7a of the lower header pipe 7 and a collection side inlet and outlet port 5a of the upper header pipe 5 are positioned mutually opposite to each other in a direction in which the header pipe extends.
- the collection side inlet and outlet port 7a of the lower header pipe 7 is provided on one end side of the lower header pipe 7, and the collection side inlet and outlet port 5a of the upper header pipe 5 is provided on the other end side of the upper header pipe 5. That is, refrigerant distribution paths between the collection side inlet and outlet port 5a and the collection side inlet and outlet port 7a are designed so as to be approximately equal in flow path length even via any of the heat exchange pipes 9.
- FIG. 2 is a perspective view of the lower header pipe, for illustrating the perforated pipe.
- the plurality of heat exchange pipes 9 and communication holes with the plurality of heat exchange pipes 9, which are supposed to be positioned above the lower header pipe 7, are omitted in illustration thereof.
- the perforated pipe 27 is a block-shaped or pipe-shaped member, and is provided approximately in the vicinity of the center of the space inside the lower header pipe 7 in a state in which the perforated pipe 27 is floated from an inner surface of the lower header pipe 7.
- a large number of distribution holes 29 are formed in the perforated pipe 27.
- the distribution holes 29 are arranged approximately in the lower section of the perforated pipe 27.
- a double pipe structure is obtained by a combination of such a perforated pipe 27 and the lower header pipe 7. Therefore, for example, in the phase of the heating, after the refrigerant, which flows through the lower communication pipe 25, temporarily flows into the perforated pipe 27, the refrigerant equally flows out from the large number of distribution holes 29 to the outside of the perforated pipe 27 in a depth direction (in a horizontal direction of the drawing sheet of FIG. 2 ). Further, the refrigerant is equally dispersed inside the lower header pipe 7 to be equally supplied from the communication holes (not shown) of the upper surf ace of the lower header pipe 7 to the plurality of heat exchange pipes 9.
- FIG. 3 is a diagram illustrating liquid distribution characteristics of a lower header pipe as an example for comparing, which is horizontally arranged and does not have the perforated pipe.
- FIG. 4 is a diagram illustrating liquid distribution characteristics of a perforated pipe built-in type lower header pipe according to this embodiment, which is horizontally arranged.
- an axis of abscissa represents a path number, that is, numbers of flow paths of the heat exchange pipes arranged in the depth direction of the lower header pipe (flow paths of 28 flat pipes vertically inserted into the upper surface of the lower header pipe).
- An axis of ordinate represents a liquid distribution ratio for each path number.
- any of the cases is out of an example of an equal distribution line indicated in parallel with the axis of abscissa.
- FIG. 5 is a view illustrating an outer appearance and plan view of the multi-air conditioner outdoor unit for a building.
- the multi-air conditioner outdoor unit for a building is employed as a high-performance apparatus that is larger in size than an outdoor unit for general home use.
- the heat exchange function surface units 3 are allocated to three surfaces of a housing 103, respectively.
- a propeller fan 105 is arranged at the center of these heat exchange function surface units 3.
- air is drawn into the housing 103 from three side surfaces of the housing 103 and is subjected to the heat exchange in the heat exchange function surface units 3.
- the air is ejected from an air outlet formed in a fan guard 109 provided on an upper surface of the housing 103 (top-flow type).
- the heat exchanger 1 serving as the outdoor unit operates as an evaporator.
- the uniform mist flow is adjusted in flow rate thereof in each of the flow rate adjusting sections 23 to flow into the lower header pipe 7 of the corresponding heat exchange function surface unit 3.
- the refrigerant which has flowed into the lower header pipe 7 through the collection side inlet and outlet port 7a of the lower header pipe 7, is ejected from the distribution holes 29 of the perforated pipe 27 to be equally distributed to the heat exchange pipes 9.
- the perforated pipe 27 when the dryness is large, minute droplets are ejected from the small holes. When the dryness is small, the bubbles are ejected to the liquid part collected in the annular section. Therefore, the equal distribution is realized independently of the dryness and the flow rate.
- the refrigerant After the refrigerant is subjected to the heat exchange with the air (not shown) when having passed through the heat exchange pipes 9, the refrigerant flows into the upper header pipe 5 and then flows out through the collection side inlet and outlet port 5a on the opposite side to the collection side inlet and outlet port 7a of the lower header pipe 7.
- the refrigerant which has flowed out through each of the collection side inlet and outlet ports 5a, passes through the corresponding upper communication pipe 13 to join another refrigerant in the upper collection pipe 15. Note that, in the phase of the cooling operation, the heat exchanger 1 operates as the condenser, and hence the flow of the refrigerant is reversed.
- the header pipes are directed in the horizontal direction, and hence the influence of the gravity can be suppressed for the refrigerant distribution, and the refrigerant can be equally distributed to the plurality of heat exchange pipes.
- the header pipes are horizontally arranged in such a manner, a plurality of surfaces can be controlled to exhibit the heat exchange function without being impeded by the actual situation that the curve of the header pipe is difficult to form.
- the heat exchange is carried out in a plurality of surfaces, the refrigerant is branched in distribution thereof in parallel to the plurality of heat exchange function surface units.
- the upstream/downstream relationship is not generated mutually among the plurality of heat exchange function surface units, and hence the satisfactory heat exchange efficiency can be maintained in each of the heat exchange function surface units.
- the refrigerant is supplied to the heat exchange function surface units in a distributive manner. Therefore, the very satisfactory heat exchange performance can be obtained in all the heat exchange function surface units.
- the entire heat exchanger does not have such a flow path that the refrigerant, which has been subjected to the heat exchange in the plurality of heat exchange pipes, is collected once, and is branched to the plurality of heat exchange pipes again. Therefore, there is no such problem that the refrigerant cannot be equally supplied to the plurality of heat exchange pipes.
- the heat exchanger and the heat exchange method of this embodiment even with the plurality of heat exchange function surface units, the influence of the gravity exerted on the refrigerant can be suppressed, and the reduction of the heat exchange performance in each of the surfaces can be suppressed.
- the inlet and outlet port of the lower header pipe and the inlet and outlet port of the upper header pipe are arranged on opposite sides to each other. Therefore, even when the refrigerant passes through any of the heat exchange pipes, the pressure losses become approximately equal to each other, that is, the equal distribution of the gas-liquid two phase flow can be realized.
- the perforated pipe is provided inside the lower header pipe, with the result that the minute droplets or the bubbles are ejected from the distribution holes to the annular section of the double structure, to thereby also promote the equal distribution of the gas-liquid two phase refrigerant.
- the number of distributions to the heat exchange pipes is increased, and the number of times of the distribution is suppressed low (in the example described above, the number of times of the distribution is only one). Therefore, although innumerable heat exchange pipes are used in order to prepare the plurality of heat exchange function surface units, the refrigerant pressure loss can be suppressed low relative to the number of heat exchange pipes. Therefore, in particular, low-pressure refrigerant (such as refrigerant exhibiting a large refrigerant pressure loss), for example, HFO1234yf, HFO1234ze, or R134a can also be effectively utilized.
- low-pressure refrigerant such as refrigerant exhibiting a large refrigerant pressure loss
- FIG. 6 A description is made of a second embodiment of the present invention with reference to FIG. 6 .
- the first embodiment described above exemplifies such a mode that the refrigerant dryness is equally adjusted for the plurality of heat exchange function surface units, and the refrigerant flow rate is changed depending on the heat loads (mainly depend on the passing air velocity in the heat exchange section), which are different from one another in the heat exchange function surface units.
- the present invention is not limitedtothatmode. That is, the present invention also encompasses such a mode that the refrigerant drynesses and/or the refrigerant flow rates are adjusted so as to be different from one another in the plurality of heat exchange function surface units.
- FIG. 6 illustrates an external appearance and plan view of the application to the package air conditioner outdoor unit.
- the heat exchange function surface units 3 are allocated to a side surface and a back surface of a housing 203, respectively.
- a propeller fan 205 By rotation of a propeller fan 205, as indicated by arrows 207, the air is drawn into the housing 203 from the side surface and the back surface of the housing 203, and is subjected to the heat exchange in the heat exchange function surface units 3. Then, as indicated by arrows 211, the air is ejected from an air outlet provided in the front surface of the housing 203.
- the influence of the gravity exerted on the refrigerant can be suppressed, and the reduction of the heat exchange performance in each of the surfaces can be suppressed.
- the mode of formation of the distribution holes is not limited thereto, and the orientation, the number, and the hole shape of the distribution holes may be suitably changed.
- the structure of the branch current adjusting section described above is also merely an example, and hence may be suitably changed.
- a branch current adjusting section having such a mode that height positions of a plurality of outlet port side branching pipes such as Y-shaped branching pipes or low-pressure loss distributers are made different from one another, a rate of a branch current of a liquid phase is changed by an influence of the gravity, and the dryness and the flow rate are simultaneously adjusted.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Details Of Heat-Exchange And Heat-Transfer (AREA)
- Other Air-Conditioning Systems (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2012/061232 WO2013161038A1 (fr) | 2012-04-26 | 2012-04-26 | Échangeur de chaleur et procédé d'échange de chaleur |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2863161A1 true EP2863161A1 (fr) | 2015-04-22 |
EP2863161A4 EP2863161A4 (fr) | 2016-03-23 |
EP2863161B1 EP2863161B1 (fr) | 2018-11-14 |
Family
ID=49482407
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12875231.8A Active EP2863161B1 (fr) | 2012-04-26 | 2012-04-26 | Échangeur de chaleur et procédé d'échange de chaleur |
Country Status (6)
Country | Link |
---|---|
US (1) | US20150083383A1 (fr) |
EP (1) | EP2863161B1 (fr) |
JP (1) | JP6104893B2 (fr) |
CN (2) | CN104335000B (fr) |
ES (1) | ES2702291T3 (fr) |
WO (1) | WO2013161038A1 (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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EP3760949A4 (fr) * | 2018-03-02 | 2021-01-20 | Panasonic Intellectual Property Management Co., Ltd. | Unité d'échangeur de chaleur et climatiseur l'utilisant |
EP3805687A4 (fr) * | 2018-06-11 | 2021-06-16 | Mitsubishi Electric Corporation | Distributeur de fluide frigorigène, échangeur de chaleur et climatiseur |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2951114B1 (fr) * | 2009-10-13 | 2011-11-04 | Peugeot Citroen Automobiles Sa | Dispositif de refroidissement pour vehicule hybride |
KR20160146885A (ko) * | 2014-04-22 | 2016-12-21 | 미쓰비시덴키 가부시키가이샤 | 공기 조화 장치 |
JP6685292B2 (ja) * | 2015-05-12 | 2020-04-22 | 三菱電機株式会社 | コルゲートフィン型熱交換器、冷凍サイクル装置、コルゲートフィンの製造装置、及びコルゲートフィン型熱交換器の製造方法 |
CN107923681B (zh) * | 2015-09-09 | 2020-05-05 | 三菱电机株式会社 | 空调装置 |
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- 2012-04-26 WO PCT/JP2012/061232 patent/WO2013161038A1/fr active Application Filing
- 2012-04-26 US US14/391,466 patent/US20150083383A1/en not_active Abandoned
- 2012-04-26 ES ES12875231T patent/ES2702291T3/es active Active
- 2012-04-26 EP EP12875231.8A patent/EP2863161B1/fr active Active
- 2012-04-26 CN CN201280073357.1A patent/CN104335000B/zh active Active
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2013
- 2013-04-26 CN CN2013202178156U patent/CN203323459U/zh not_active Expired - Lifetime
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EP3760949A4 (fr) * | 2018-03-02 | 2021-01-20 | Panasonic Intellectual Property Management Co., Ltd. | Unité d'échangeur de chaleur et climatiseur l'utilisant |
EP3805687A4 (fr) * | 2018-06-11 | 2021-06-16 | Mitsubishi Electric Corporation | Distributeur de fluide frigorigène, échangeur de chaleur et climatiseur |
Also Published As
Publication number | Publication date |
---|---|
EP2863161A4 (fr) | 2016-03-23 |
ES2702291T3 (es) | 2019-02-28 |
CN203323459U (zh) | 2013-12-04 |
US20150083383A1 (en) | 2015-03-26 |
JPWO2013161038A1 (ja) | 2015-12-21 |
CN104335000A (zh) | 2015-02-04 |
EP2863161B1 (fr) | 2018-11-14 |
JP6104893B2 (ja) | 2017-03-29 |
CN104335000B (zh) | 2016-09-14 |
WO2013161038A1 (fr) | 2013-10-31 |
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