CN107741107B - Heat exchanger and air conditioner with same - Google Patents
Heat exchanger and air conditioner with same Download PDFInfo
- Publication number
- CN107741107B CN107741107B CN201711124826.9A CN201711124826A CN107741107B CN 107741107 B CN107741107 B CN 107741107B CN 201711124826 A CN201711124826 A CN 201711124826A CN 107741107 B CN107741107 B CN 107741107B
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- liquid
- heat exchanger
- heat exchange
- tube
- exchange tube
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- 239000007788 liquid Substances 0.000 claims abstract description 170
- 239000003507 refrigerant Substances 0.000 claims abstract description 84
- 238000000926 separation method Methods 0.000 claims description 28
- 230000001502 supplementing effect Effects 0.000 claims description 22
- 239000013589 supplement Substances 0.000 claims description 4
- 238000012546 transfer Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 239000002826 coolant Substances 0.000 description 4
- 238000004378 air conditioning Methods 0.000 description 3
- 238000002637 fluid replacement therapy Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 239000012530 fluid Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010079 rubber tapping Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
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- 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
- 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
- F28D7/163—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 with conduit assemblies having a particular shape, e.g. square or annular; with assemblies of conduits having different geometrical features; with multiple groups of conduits connected in series or parallel and arranged inside common casing
-
- 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
-
- 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
- F28F9/24—Arrangements for promoting turbulent flow of heat-exchange media, e.g. by plates
-
- 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
- F25B2339/00—Details of evaporators; Details of condensers
- F25B2339/02—Details of evaporators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2500/00—Problems to be solved
- F25B2500/09—Improving heat transfers
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Geometry (AREA)
- Fluid Mechanics (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The application provides a heat exchanger and an air conditioner with the same. The heat exchanger according to the present application includes: a heat exchanger housing having a heat exchange cavity; the first heat exchange tube is arranged in the heat exchange cavity and comprises at least two first heat exchange tube sections; the liquid homogenizing part is arranged between two adjacent first heat exchange tube sections of the first heat exchange tube, the liquid homogenizing part is provided with a liquid homogenizing cavity and a liquid dividing plate arranged in the liquid homogenizing cavity, the two adjacent first heat exchange tube sections are communicated with the liquid homogenizing cavity, liquid dividing holes are formed in the liquid dividing plate, and refrigerant enters the next first heat exchange tube section through the liquid dividing holes. The heat exchanger can improve the uniformity of refrigerant distribution.
Description
Technical Field
The application relates to the field of air conditioning equipment, in particular to a heat exchanger and an air conditioner with the same.
Background
The dry evaporator is an important component in a refrigerating and air-conditioning system, and the performance of the dry evaporator plays a key core role in energy conservation and consumption reduction of the whole refrigerating and air-conditioning system. In large and medium-sized refrigerating units, shell-and-tube evaporators are mainly dry type and flooded type. The shell side of the dry evaporator is provided with a refrigerating medium, the heat exchange tube is internally provided with a refrigerant, and the refrigerating medium outside the tube is cooled by the evaporation of the refrigerant to prepare low-temperature liquid. The application of the dry evaporator is relatively mature, a separate heat exchanger oil return design is not needed generally, but the dry evaporator has a disadvantage that the refrigerant is difficult to uniformly distribute in each heat exchange tube due to the fact that the tube bundles are more, and the problems that the refrigerant is more and less in the heat exchange tubes exist. Because of uneven distribution of the refrigerant, a large part of heat exchange area is not fully utilized, and the heat exchange efficiency of the heat exchanger is affected.
Disclosure of Invention
The application aims to provide a heat exchanger capable of uniformly distributing refrigerant and an air conditioner with the same.
The application provides a heat exchanger, comprising: a heat exchanger housing having a heat exchange cavity; the first heat exchange tube is arranged in the heat exchange cavity and comprises at least two first heat exchange tube sections; the liquid homogenizing part is arranged between two adjacent first heat exchange tube sections of the first heat exchange tube, the liquid homogenizing part is provided with a liquid homogenizing cavity and a liquid dividing plate arranged in the liquid homogenizing cavity, the two adjacent first heat exchange tube sections are communicated with the liquid homogenizing cavity, liquid dividing holes are formed in the liquid dividing plate, and refrigerant enters the next first heat exchange tube section through the liquid dividing holes.
Optionally, the heat exchanger shell comprises a plurality of heat exchanger sections, a first heat exchange pipe section is correspondingly arranged in each heat exchanger section, and a liquid homogenizing part is arranged between every two adjacent heat exchanger sections.
Optionally, the liquid homogenizing part further includes: the first cover plate is fixedly connected to the end part of the previous heat exchanger section in the two adjacent heat exchanger sections, and a first through hole for installing the first heat exchanger section in the previous heat exchanger section is formed in the first cover plate; the second cover plate is fixedly connected to the end part of the next heat exchanger section in the two adjacent heat exchanger sections, fixedly connected with the first cover plate and forming a liquid equalizing cavity, and a second through hole for installing the first heat exchanger section in the next heat exchanger section is formed in the second cover plate.
Optionally, a liquid separating plate is arranged on one side of the first cover plate facing the liquid homogenizing part, and a liquid separating plate is arranged on one side of the second cover plate facing the liquid homogenizing part.
Optionally, the heat exchanger further comprises a lower baffle plate, and the lower baffle plate is fixedly connected to the liquid homogenizing part.
Optionally, the heat exchanger further comprises a liquid supplementing pipe, wherein the liquid supplementing pipe is arranged in the heat exchange cavity, is communicated with the liquid homogenizing cavity, and supplements refrigerant in the liquid homogenizing cavity.
Optionally, the liquid separation plate is provided with a mounting hole for the liquid filling pipe to pass through, and the area of the mounting hole is larger than that of the liquid separation hole.
Optionally, the heat exchanger further comprises a front tube box, the front tube box is connected to the first end of the heat exchanger shell, the first heat exchange tube penetrates through the heat exchanger shell and is communicated with the front tube box, a refrigerant inlet tube is connected to the front tube box, and primary liquid separating holes are formed in the tube wall of the refrigerant inlet tube extending into the front tube box.
Optionally, a liquid separating plate is further arranged in the front pipe box, and the liquid separating plate is located at the end part of the first heat exchange pipe.
According to another aspect of the present application, there is provided an air conditioner, which includes a heat exchanger, the heat exchanger being the heat exchanger described above.
According to the heat exchanger and the air conditioner with the same, the first heat exchange pipe of the heat exchanger comprises the plurality of first heat exchange pipe sections, the liquid homogenizing part is arranged between two adjacent first heat exchange pipe sections and used for redistributing the refrigerant, and the liquid dividing plate in the liquid homogenizing part can enable the refrigerant to uniformly enter each first heat exchange pipe section, so that the refrigerating medium and the refrigerant can fully exchange heat, the heat exchange area of each first heat exchange pipe is effectively utilized, and the heat exchange effect is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:
fig. 1 is a schematic perspective view of a removed shell of a heat exchanger according to the present application;
FIG. 2 is a schematic cross-sectional view of a heat exchanger according to the present application;
FIG. 3 is a schematic view of a partial enlarged structure at A in FIG. 2;
FIG. 4 is a schematic view of a partially enlarged structure at B in FIG. 2;
fig. 5 is a partially exploded perspective view of a heat exchanger according to the present application.
Reference numerals illustrate:
1. a first heat exchange tube section; 3. a liquid homogenizing cavity; 4. a liquid separation plate; 5. a liquid separation hole; 6. a fluid supplementing pipe; 7. a heat exchanger section; 8. a first cover plate; 9. a second cover plate; 10. a lower baffle; 11. a front pipe box; 12. a refrigerant inlet pipe; 13. primary fraction of the liquid-dispensing well; 14. an upper baffle; 15. a second heat exchange tube; 17. and (5) mounting holes.
Detailed Description
The application will be described in detail below with reference to the drawings in connection with embodiments.
As shown in fig. 1 to 5, according to an embodiment of the present application, a heat exchanger includes a heat exchanger case, a first heat exchange tube, and a liquid equalizing portion. The heat exchanger shell is provided with a heat exchange cavity. The first heat exchange tube is arranged in the heat exchange cavity and comprises at least two first heat exchange tube sections 1. The liquid homogenizing part is arranged between two adjacent first heat exchange tube sections 1 of the first heat exchange tube, the liquid homogenizing part is provided with a liquid homogenizing cavity 3 and a liquid dividing plate 4 arranged in the liquid homogenizing cavity 3, the two adjacent first heat exchange tube sections 1 are communicated with the liquid homogenizing cavity 3, liquid dividing holes 5 are formed in the liquid dividing plate 4, and a refrigerant enters the next first heat exchange tube section 1 through the liquid dividing holes 5.
The first heat exchange tube of the heat exchanger comprises a plurality of first heat exchange tube sections 1, a liquid homogenizing part is arranged between two adjacent first heat exchange tube sections 1 and used for redistributing the refrigerant, and a liquid separating plate 4 in the liquid homogenizing part can enable the refrigerant to uniformly enter each first heat exchange tube section 1, so that the refrigerating medium and the refrigerant can fully exchange heat, the heat exchange area of each first heat exchange tube is effectively utilized, and the heat exchange effect is improved.
Optionally, the heat exchanger further comprises a liquid supplementing pipe 6, which is arranged in the heat exchange cavity, is communicated with the liquid homogenizing cavity 3, and supplements refrigerant in the liquid homogenizing cavity 3.
As shown in FIG. 1, a coolant inlet and a coolant outlet are arranged on a heat exchanger shell, and the coolant flows in the heat exchanger shell and exchanges heat with a heat exchange tube arranged in a heat exchange cavity, so that the temperature of the coolant is regulated. In this embodiment, the heat exchange tubes are disposed at the upper portion and the lower portion of the heat exchanger housing, wherein the heat exchange tube disposed at the upper portion is the second heat exchange tube, and the heat exchange tube disposed at the lower portion is the first heat exchange tube. The first heat exchange tube comprises a plurality of first heat exchange tube sections 1, and the plurality of first heat exchange tube sections 1 are sequentially arranged along the length direction of the heat exchanger shell. The second heat exchange tube may be a complete tube, not segmented.
Be provided with the liquid portion that unifies between two adjacent first heat transfer tube sections 1, liquid portion that unifies can redistribute the refrigerant of preceding first heat transfer tube section 1 to in the first heat transfer tube section 1 of back, can avoid like this if refrigerant maldistribution will cause the heat transfer area reduction in heat transfer process, the not good problem of heat transfer effect.
The liquid supplementing pipe 6 can supplement liquid when the refrigerant is distributed in each liquid homogenizing part, so that the refrigerant is sufficient, the refrigerant can be distributed into each first heat exchange pipe section 1 more uniformly, and the heat exchange area is maximized.
For the installation of being convenient for, the heat exchanger casing includes a plurality of heat exchanger sections 7, corresponds in every heat exchanger section 7 to be provided with a first heat exchange tube section 1, is provided with a samming portion between two adjacent heat exchanger sections 7. The heat exchanger shell is arranged in a segmented mode, so that structures such as the first heat exchange tube section 1 and the liquid homogenizing part can be installed more conveniently.
As shown in fig. 1-5, the heat exchanger further comprises a front tube box 11, the front tube box 11 being connected to the first end of the heat exchanger housing, the front tube box 11 being adapted to introduce a refrigerant into the first heat exchange tubes of the heat exchanger housing.
As shown in fig. 3, the first heat exchange tube passes through the heat exchanger housing and communicates with the front tube box 11. The front tube box 11 is connected with a refrigerant inlet tube 12, and the refrigerant enters the front tube box 11 through the refrigerant inlet tube 12. In order to make the refrigerant uniformly enter the first heat exchange tube, the wall of the refrigerant inlet tube 12 extending into the front tube box 11 is provided with primary liquid separating holes 13.
Optionally, the primary liquid separation holes 13 are uniformly spaced along the circumference of the refrigerant inlet pipe 12, and a plurality of groups of primary liquid separation holes 13 are provided along the length direction of the refrigerant inlet pipe 12, and an end opening of the refrigerant inlet pipe 12 located in the front pipe box 11 is plugged, so that the refrigerant enters the front pipe box 11 through the primary liquid separation holes 13.
The primary liquid discharge hole 13 may be provided as needed, and in other embodiments, the primary liquid discharge hole 13 may be omitted. Or other structures capable of realizing liquid homogenization are adopted to replace the primary liquid distribution holes 13.
Optionally, a liquid separating plate 4 is further disposed in the front tube box 11, and the liquid separating plate 4 is located at an end of the first heat exchange tube. The liquid separation plate 4 is used for enabling the refrigerant to uniformly enter the first heat exchange tubes with different heights. In the present embodiment, the liquid separation plate 4 is provided with mounting holes 17 in addition to the liquid separation holes 5. The mounting hole 17 is used for allowing the liquid supplementing pipe 6 to pass through, so that the refrigerant in the front pipe box 11 can enter the liquid supplementing pipe 6.
Alternatively, the area of the mounting hole 17 is larger than the area of the liquid separation hole 5.
Referring to fig. 1, 4 and 5 in combination, the liquid-homogenizing portion further includes a first cover plate 8 and a second cover plate 9. The first cover plate 8 is fixedly connected to the end part of the previous heat exchanger section 7 in the two adjacent heat exchanger sections 7, and a first through hole for installing the first heat exchanger tube section 1 in the previous heat exchanger section 7 is formed in the first cover plate 8. The second cover plate 9 is fixedly connected to the end part of the next heat exchanger section 7 of the two adjacent heat exchanger sections 7, and is fixedly connected with the first cover plate 8 to form the liquid equalizing cavity 3. The second cover plate 9 is provided with a second through hole for installing the first heat exchange tube section 1 in the subsequent heat exchanger section 7. The refrigerant flowing out of the previous first heat exchange tube section 1 enters the liquid equalizing cavity 3, the refrigerant which is not subjected to heat exchange and comes from the liquid supplementing tube 6 also enters the liquid equalizing cavity 3, one part of the refrigerant passes through the liquid equalizing cavity 3 to enter the next first heat exchange tube section 1, and the other part of the refrigerant directly enters the next liquid supplementing tube 6.
In order to be able to mount and fix the fluid replacement pipe 6, the first cover plate 8 and the second cover plate 9 are further provided with third through holes for mounting the fluid replacement pipe 6.
Optionally, a liquid separating plate 4 is disposed on a side of the first cover plate 8 facing the liquid homogenizing portion, and a liquid separating plate 4 is disposed on a side of the second cover plate 9 facing the liquid homogenizing portion. The liquid separation holes 5 on the liquid separation plate 4 can enable the refrigerant to enter the subsequent first heat exchange tube section 1 more uniformly. The mounting hole 17 can mount and fix the fluid replacement tube 6.
Preferably, in order to enhance the heat exchange effect, an upper baffle 14 and/or a lower baffle 10 are provided within the heat exchanger housing. The refrigerating medium can be deflected in the heat exchanger shell through the upper baffle plate 14 and/or the lower baffle plate 10, so that the stroke of the refrigerating medium is increased, the heat exchange contact area and the heat exchange contact time are further increased, and the heat exchange effect is ensured.
In the present embodiment, at least a part of the lower baffle 10 is provided on the liquid-homogenizing portion. Therefore, space occupation can be reduced, the secondary refrigerant can be fully contacted with the first cover plate 8 and the second cover plate 9 of the liquid homogenizing part, and the heat exchange area is increased.
The heat exchanger can enable the dry shell-and-tube evaporator to have an efficient liquid separation function. The first half part of the whole heat exchange process (namely the heat exchange process in the first heat exchange tube) of the heat exchanger is divided into a plurality of limited heat exchange sections, and the liquid supplementing pipe 6 arranged at the bottom of the heat exchanger shell is used for carrying out liquid re-supplying distribution at the joint of the two adjacent sections of the first heat exchange tube sections 1 by utilizing the hollow lower baffle structure (the liquid supplementing part with the lower baffle plate 10), so that the refrigerant liquid is uniformly and repeatedly supplemented and distributed to the heat exchange parts of each section in the heat exchange process, and the refrigerant of each first heat exchange tube section 1 is balanced.
The flow of each first heat exchange tube section 1 of each section is balanced by arranging the liquid separating plate 4 in the liquid homogenizing cavity 3 of the liquid homogenizing part. The hollow lower baffle structure at the joint of the two first heat exchange tube sections 1 can synchronously exchange heat at the joint through the refrigerant liquid supplemented by the liquid supplementing tube, so that the hollow lower baffle structure can exchange part of heat and increase the heat exchange area while realizing the baffle of the secondary refrigerant. The liquid supplementing pipe 6 arranged at the bottom of the heat exchanger shell can change the flow cross section by adopting a plug mode, and control the refrigerant liquid distributed by each first heat exchange pipe section 1.
As shown in fig. 2, the dry shell-and-tube heat exchanger divides a conventional heat exchanger into several heat exchanger sections 7, and a liquid homogenizing part with a lower baffle plate 10 is arranged at the connecting part of each heat exchanger section 7 to form a hollow lower baffle structure for supplementing and distributing refrigerant and exchanging heat with the refrigerating medium. The hollow lower baffle structure and the upper baffle plate 14 form a baffle group together at the same time to control the flow direction of the secondary refrigerant. A liquid separation plate 4 is arranged in each liquid homogenizing part so as to balance the refrigerant distribution of each first heat exchange tube section 1. The bottom of each heat exchanger section 7 is provided with a liquid supplementing pipe 6, and the bottom liquid supplementing pipes 6 of the plurality of heat exchanger sections 7 are connected in series to form a complete refrigerant liquid distribution pipeline.
The heat exchange process of the heat exchanger and the components of each part are as follows:
the secondary refrigerant enters the secondary refrigerant inlet at one end of the tube side of the heat exchanger shell, the secondary refrigerant is controlled to be repeatedly deflected up and down at the tube side through a baffle plate group formed by the hollow lower baffle structure and the upper baffle plate 14, and is subjected to heat exchange and temperature reduction with the arranged first heat exchange tube and the second heat exchange tube 15, and finally is conveyed out through the secondary refrigerant outlet at the other end.
The refrigerant enters from the refrigerant inlet pipe 12 of the heat exchanger and passes through the primary liquid separating hole 13 (the structure is self-configured), and primary liquid separation is completed in the front pipe box 11. The refrigerant after preliminary liquid separation is distributed into the front pipe box 11, and flows away through the liquid separation plate 4 arranged in the front pipe box 11 and enters each first heat exchange pipe section 1. The liquid separating plate 4 is provided with holes with two sizes, the holes with small cross sections are liquid separating holes 5, and the holes are uniformly distributed on the upper part of the liquid separating plate 4 and mainly correspond to the first heat exchange tube section 1 arranged on the first heat exchanger section 7. The refrigerant fluid can slowly and uniformly pass through the liquid separation hole 5 due to the smaller pore diameter. And the large-section holes are mounting holes 17 and are distributed at the bottom of the liquid separation plate 4 and mainly correspond to the liquid supplementing pipes 6 arranged in the first heat exchanger section 7, and the refrigerant liquid flows to the first hollow lower baffling structure.
The liquid supplementing pipe 6 can be a common pipe and only has the function of conveying the refrigerant liquid. Each mounting hole 17 can be closed by a plug, the flow cross section area is changed, the distributed refrigerant liquid is controlled, and each heat exchanger section 7 can be ensured to be distributed with enough refrigerant liquid.
The liquid homogenizing part in the first hollow lower baffle structure in the heat exchanger shell is formed by splicing a first cover plate 8 arranged on the first heat exchanger section 7 and a second cover plate 9 of the second heat exchanger section 7. The liquid-homogenizing part is used for carrying out the supplementary distribution of the refrigerant, and a part of extended solid lower baffle plates 10 are arranged on the liquid-homogenizing part so as to baffle the flow direction of the refrigerating medium.
The refrigerant flowing out of the first heat exchange tube section 1 is uniformly distributed into the liquid equalizing cavity 3 from the liquid separating plate 4 arranged on the first cover plate 8, the refrigerant which is basically not subjected to heat exchange in the liquid supplementing tube 6 flows into the liquid equalizing cavity 3 from the bottom mounting hole 17, and a large amount of refrigerant liquid is supplemented into the liquid equalizing cavity 3 after entering the liquid equalizing cavity 3 through the liquid separating plate 4 due to small pressure drop, and is supplemented into the previous first heat exchange tube section 1 and the next first heat exchange tube section 1 again. Since the liquid separation plate 4 (liquid separation plate provided on the second cover plate 9) is also arranged at the inlet of the latter first heat exchange tube segment 1, the refrigerant that has entered through the liquid separation plate 4 from the former first heat exchange tube segment 1 and the refrigerant that has entered through the liquid separation plate 4 from the liquid supplementing tube 6 can be uniformly distributed into the latter first heat exchange tube segment 1. Meanwhile, the refrigerant can be directly evaporated in the hollow lower baffling structure to exchange heat with the secondary refrigerant liquid passing through the hollow lower baffling structure. Compared with other baffle structures, the heat exchange area is increased.
The last hollow lower baffle structure is formed by splicing a first cover plate 8 on the last first heat exchange tube section 1 with a second cover plate 9 of the last first heat exchange tube section 1. Where the refrigerant liquid entering through the penultimate first heat exchange tube section 1 is mixed with the last liquid replenishment tube 6. The mounting holes 17 of the last tapping plate 4 are all plugged here with plugs, and all the refrigerant is distributed from the tapping holes 5 into the first heat exchanger tube section 1 of the last heat exchanger section 7. And finally, an end cover at the other side of the heat exchanger section 7 is used for converging all the refrigerant of the inlet liquid, and the refrigerant passes through the heat exchanger sections 7 again from the upper part in sequence and finally flows away from the return air pipe of the heat exchanger.
In addition, as the related heat exchanger sections 7 are independent in structure, the dry shell-and-tube heat exchangers with different heat exchange capacities can be met only by installing a plurality of identical heat exchanger sections 7, and the structure is simple, so that the production, the processing and the after-sales and the maintenance are convenient.
According to another aspect of the present application, there is provided an air conditioner, which includes a heat exchanger, the heat exchanger being the heat exchanger described above. By adopting the air conditioner with the heat exchanger, the refrigerant can be uniformly distributed in the first heat exchanger, so that the heat exchange area of the refrigerant and the secondary refrigerant is ensured, and the heat exchange effect is improved.
The heat exchanger and the air conditioner with the heat exchanger have the following technical effects:
this heat exchanger can high-efficient branch liquid, solves the problem that causes the heat exchange efficiency low because of dividing liquid inequality, has increased the surface that can carry out the heat transfer, strengthens heat transfer area, has promoted the heat transfer effect.
The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (7)
1. A heat exchanger, comprising:
a heat exchanger housing having a heat exchange cavity;
the first heat exchange tube is arranged in the heat exchange cavity and comprises at least two first heat exchange tube sections (1);
the liquid homogenizing part is arranged between two adjacent first heat exchange tube sections (1) of the first heat exchange tube, the liquid homogenizing part is provided with a liquid homogenizing cavity (3) and a liquid dividing plate (4) arranged in the liquid homogenizing cavity (3), the two adjacent first heat exchange tube sections (1) are communicated with the liquid homogenizing cavity (3), liquid dividing holes (5) are formed in the liquid dividing plate (4), and the refrigerant enters the next first heat exchange tube section (1) through the liquid dividing holes (5);
the heat exchanger shell comprises a plurality of heat exchanger sections (7), one first heat exchange tube section (1) is correspondingly arranged in each heat exchanger section (7), and one liquid homogenizing part is arranged between two adjacent heat exchanger sections (7);
the liquid homogenizing part further comprises:
the first cover plate (8), the first cover plate (8) is fixedly connected to the end part of the previous heat exchanger section (7) in the two adjacent heat exchanger sections (7), and the first cover plate (8) is provided with a first through hole for installing the first heat exchanger tube section (1) in the previous heat exchanger section (7);
the second cover plate (9) is fixedly connected to the end part of the next heat exchanger section (7) in the two adjacent heat exchanger sections (7), is fixedly connected with the first cover plate (8) and forms the liquid homogenizing cavity (3), and a second through hole for installing the first heat exchanger section (1) in the next heat exchanger section (7) is formed in the second cover plate (9);
the heat exchanger further comprises a lower baffle plate (10), and the lower baffle plate (10) is fixedly connected to the liquid homogenizing part.
2. The heat exchanger according to claim 1, wherein the side of the first cover plate (8) facing the liquid-homogenizing portion is provided with the liquid-dividing plate (4), and the side of the second cover plate (9) facing the liquid-homogenizing portion is provided with the liquid-dividing plate (4).
3. The heat exchanger according to claim 1 or 2, further comprising a liquid supplementing pipe (6), wherein the liquid supplementing pipe (6) is arranged in the heat exchange cavity, is communicated with the liquid homogenizing cavity (3), and supplements refrigerant in the liquid homogenizing cavity (3).
4. A heat exchanger according to claim 3, wherein the liquid separation plate (4) is provided with mounting holes (17) through which the liquid replenishing pipe (6) passes, the area of the mounting holes (17) being larger than the area of the liquid separation holes (5).
5. The heat exchanger according to claim 1, further comprising a front tube box (11), wherein the front tube box (11) is connected to a first end of the heat exchanger housing, the first heat exchange tube passes through the heat exchanger housing and is communicated with the front tube box (11), a refrigerant inlet tube (12) is connected to the front tube box (11), and primary liquid separating holes (13) are formed in a tube wall of the front tube box (11) where the refrigerant inlet tube (12) extends.
6. The heat exchanger according to claim 5, wherein a liquid separation plate (4) is further provided in the front tube box (11), the liquid separation plate (4) being located at an end of the first heat exchange tube.
7. An air conditioner comprising a heat exchanger according to any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711124826.9A CN107741107B (en) | 2017-11-14 | 2017-11-14 | Heat exchanger and air conditioner with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711124826.9A CN107741107B (en) | 2017-11-14 | 2017-11-14 | Heat exchanger and air conditioner with same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107741107A CN107741107A (en) | 2018-02-27 |
| CN107741107B true CN107741107B (en) | 2023-11-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711124826.9A Active CN107741107B (en) | 2017-11-14 | 2017-11-14 | Heat exchanger and air conditioner with same |
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| CN (1) | CN107741107B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108775825B (en) * | 2018-05-24 | 2021-05-04 | 重庆美的通用制冷设备有限公司 | Heat exchange assembly and refrigerating system with same |
| CN108800671B (en) * | 2018-07-25 | 2019-11-19 | 珠海格力电器股份有限公司 | Heat exchanger and air conditioner with it |
| CN109990628B (en) * | 2019-04-08 | 2020-08-25 | 温州天龙机械科技有限公司 | Improved tubular heat exchanger |
| CN110393929B (en) * | 2019-09-03 | 2021-08-10 | 武汉工程大学重庆研究院 | Thermosyphon reboiler for chemical heat transfer |
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| CN203586618U (en) * | 2013-11-15 | 2014-05-07 | 温岭市钱江化工机械有限公司 | Dry type evaporator |
| CN104422313A (en) * | 2013-09-10 | 2015-03-18 | 珠海格力电器股份有限公司 | Shell and tube heat exchanger and air conditioner with same |
| CN205784020U (en) * | 2016-06-21 | 2016-12-07 | 南京冷德节能科技有限公司 | Single process side's housing dry evaporator |
| CN207649169U (en) * | 2017-11-14 | 2018-07-24 | 珠海格力电器股份有限公司 | Heat exchanger and air conditioner with same |
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| US20140262172A1 (en) * | 2013-03-14 | 2014-09-18 | Koch Heat Transfer Company, Lp | Tube bundle for shell-and-tube heat exchanger and a method of use |
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| CN104422313A (en) * | 2013-09-10 | 2015-03-18 | 珠海格力电器股份有限公司 | Shell and tube heat exchanger and air conditioner with same |
| CN203586618U (en) * | 2013-11-15 | 2014-05-07 | 温岭市钱江化工机械有限公司 | Dry type evaporator |
| CN205784020U (en) * | 2016-06-21 | 2016-12-07 | 南京冷德节能科技有限公司 | Single process side's housing dry evaporator |
| CN207649169U (en) * | 2017-11-14 | 2018-07-24 | 珠海格力电器股份有限公司 | Heat exchanger and air conditioner with same |
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