CN112944980A - Falling film heat exchange tube, falling film heat exchanger and air conditioner - Google Patents

Falling film heat exchange tube, falling film heat exchanger and air conditioner Download PDF

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Publication number
CN112944980A
CN112944980A CN201911259724.7A CN201911259724A CN112944980A CN 112944980 A CN112944980 A CN 112944980A CN 201911259724 A CN201911259724 A CN 201911259724A CN 112944980 A CN112944980 A CN 112944980A
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CN
China
Prior art keywords
teeth
tooth
heat exchange
falling film
film heat
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.)
Pending
Application number
CN201911259724.7A
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Chinese (zh)
Inventor
刘华
张治平
胡东兵
胡海利
王小勇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gree Electric Appliances Inc of Zhuhai
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Gree Electric Appliances Inc of Zhuhai
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gree Electric Appliances Inc of Zhuhai filed Critical Gree Electric Appliances Inc of Zhuhai
Priority to CN201911259724.7A priority Critical patent/CN112944980A/en
Publication of CN112944980A publication Critical patent/CN112944980A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • 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
    • 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
    • F25B2339/00—Details of evaporators; Details of condensers
    • F25B2339/04—Details of condensers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2215/00—Fins
    • F28F2215/10—Secondary fins, e.g. projections or recesses on main fins

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

Abstract

The invention provides a falling film heat exchange tube, a falling film heat exchanger and an air conditioner, wherein the falling film heat exchange tube comprises: the tube comprises a tube base body (2) and a tooth main body (3) arranged on the outer wall of the tube base body (2), wherein the upper end of the tooth main body (3) is provided with more than two oppositely-arranged side teeth (4) which comprise a first side tooth (41) and a second side tooth (42) which are oppositely arranged, the side teeth (4) are also provided with inclined teeth (5), and the inclined teeth (5) comprise a first inclined tooth (51) which is convexly arranged on the first side tooth (41) in the direction towards the second side tooth (42) and a second inclined tooth (52) which is convexly arranged on the second side tooth (42) in the direction towards the first side tooth (41), so that a semi-closed small evaporation cavity (6) is formed between the first inclined tooth (51) and the second inclined tooth (52). The invention can improve the evaporation heat exchange efficiency of the heat exchange tube and the condensation heat exchange efficiency of the heat exchange tube under both the heating working condition and the cooling working condition.

Description

Falling film heat exchange tube, falling film heat exchanger and air conditioner
Technical Field
The invention belongs to the technical field of heat exchange, and particularly relates to a falling film heat exchange tube, a falling film heat exchanger and an air conditioner.
Background
The conventional commercial heat pump unit generally adopts a dry evaporator or a flooded evaporator as an evaporator and a fin heat exchanger as a condenser under the refrigeration working condition. However, the conventional dry evaporator provides a limited amount of cooling, while the flooded evaporator has a problem of high cost due to the need for a large amount of refrigerant. To solve the above-mentioned contradiction, researchers developed falling film heat pump heat exchangers based on falling film evaporators. The first problem of the development of the falling film heat pump heat exchanger is to develop a falling film high-efficiency heat pump pipe, and the types of heat exchange pipes are few in market. Meanwhile, the falling film heat pump tube cannot achieve the heat exchange enhancement rate of the traditional enhanced evaporation tube and the enhanced condenser tube compared with a light tube, and the enhancement rate of the condenser tube is much higher than that of the evaporation tube. Therefore, it is necessary to adopt a strengthening means to enhance the evaporation heat exchange performance of the falling film heat pump tube.
The falling film heat exchange tube, the falling film heat exchanger and the air conditioner are researched and designed due to the technical problems that the heat exchange effect of the falling film heat pump tube in the prior art is poor when the falling film heat pump tube is used as an evaporation tube, the heat exchange effect cannot be improved under the working conditions of heating and refrigerating respectively, and the like.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to overcome the defects that the heat exchange effect of the falling film heat pump tube is poor when the falling film heat pump tube is used as an evaporation tube and the heat exchange effect cannot be improved under the respective heating and refrigerating working conditions in the prior art, so that the falling film heat exchange tube, the falling film heat exchanger and the air conditioner are provided.
The invention provides a falling film heat exchange tube, which comprises:
the upper end of the tooth main body is provided with more than two oppositely arranged side teeth, the side teeth comprise a first side tooth and a second side tooth which are oppositely arranged, the side teeth are also provided with helical teeth, the helical teeth comprise a first helical tooth which is convexly arranged on the first side tooth in the direction towards the second side tooth and a second helical tooth which is convexly arranged on the second side tooth in the direction towards the first side tooth, and a semi-closed small evaporation cavity is formed between the first helical tooth and the second helical tooth.
Preferably, the first and second electrodes are formed of a metal,
in longitudinal section: the width L1 of the tooth main body is 0.4mm-0.7 mm; and/or the tooth body height h1 is 0.6mm-1.0 mm; and/or the height h2 between the bottom of the side teeth on the tooth main body and the tube base body is 0.3mm-0.7 mm.
Preferably, the first and second electrodes are formed of a metal,
the height h3 between the bottom of the helical tooth and the tooth top of the helical tooth is 0.1mm-0.4 mm; and/or the included angle theta 1 of the two side teeth is 15-60 degrees; and/or the included angle theta 2 of the two helical teeth is 60-150 degrees.
Preferably, the first and second electrodes are formed of a metal,
the tooth main body and the two side teeth form Y-shaped teeth with Y-shaped longitudinal sections; and/or the free ends of the side teeth and/or the helical teeth are pointed.
Preferably, the first and second electrodes are formed of a metal,
the tooth main part has a plurality ofly, and a plurality ofly the tooth main part interval is arranged, and forms big evaporation chamber between two adjacent tooth main parts.
Preferably, the first and second electrodes are formed of a metal,
a protruding structure is convexly arranged on the outer wall of the tube base body and positioned in the large evaporation cavity; and/or the plurality of tooth bodies are arranged on the outer wall of the pipe base body along a spiral line to form a group of spiral teeth.
Preferably, the first and second electrodes are formed of a metal,
and a plurality of groups of spiral teeth are arranged on the outer wall of the tube base body in an upward-arranged mode, and the plurality of groups of spiral teeth are arranged at intervals.
Preferably, the first and second electrodes are formed of a metal,
the outer wall of the tube base body is also provided with at least one groove along the axial direction; and/or the inner wall of the tube base body is also provided with inner teeth.
The invention also provides a falling film heat exchanger which comprises the falling film heat exchange tube.
The invention also provides an air conditioner which comprises the falling film heat exchange tube or the falling film heat exchanger.
The falling film heat exchange tube, the falling film heat exchanger and the air conditioner provided by the invention have the following beneficial effects:
according to the invention, the side teeth on the tooth main body are respectively provided with the two helical teeth, and the two helical teeth oppositely extend out, so that an evaporation cavity structure can be added between the two helical teeth under the evaporation working condition, the effect of increasing the density of the evaporation cavity on the heat exchange tube (the density of the evaporation cavity on the heat exchange tube with the same area is distributed) is achieved, the refrigerant evaporation is facilitated greatly, and the evaporation strengthening efficiency of the heat exchange tube is improved; under the condensation working condition, the helical teeth and the side teeth with the thorn-shaped structures are favorable for puncturing a refrigerant liquid film, and meanwhile, the helical teeth and the side teeth are used as the structures of the evaporation cavity under the evaporation working condition, so that the condensate is discharged in the circumferential direction, and the thermal resistance of the pipe wall is reduced; therefore, the evaporation heat exchange efficiency of the heat exchange tube and the condensation heat exchange efficiency of the heat exchange tube can be improved under both the heating working condition and the refrigerating working condition.
Drawings
Fig. 1 is a partial three-dimensional structural view of a falling film heat exchange tube of the present invention;
FIG. 2 is an enlarged partial schematic view of portion A of FIG. 1;
FIG. 3 is a dimensional structure diagram of a tooth portion of a falling film heat exchange tube of the present invention;
figure 4 is a partial three-dimensional block diagram (alternative, including protrusions) of a falling film heat exchange tube of the present invention;
fig. 5 is a partially enlarged schematic view of a portion B in fig. 4.
The reference numbers in the figures denote:
1. internal teeth; 2. a tube base; 3. a tooth body; 4. side teeth; 41. a first side tooth; 42. a second side tooth; 5. helical teeth; 51. a first helical tooth; 52. a second helical tooth; 6. a small evaporation cavity; 7. a large evaporation cavity; 8. a groove; 9. and (5) a protrusion structure.
Detailed Description
As shown in fig. 1-5, the present invention provides a falling film heat exchange tube comprising:
the tube comprises a tube base body 2 and a tooth body 3 arranged on the outer wall of the tube base body 2, wherein the upper end of the tooth body 3 is provided with more than two oppositely arranged side teeth 4, the side teeth comprise a first side tooth 41 and a second side tooth 42 which are oppositely arranged, the side teeth 4 are also provided with inclined teeth 5, the inclined teeth 5 comprise a first inclined tooth 51 which is convexly arranged on the first side tooth 41 in the direction towards the second side tooth 42 and a second inclined tooth 52 which is convexly arranged on the second side tooth 42 in the direction towards the first side tooth 41, and a semi-closed small evaporation cavity 6 (the small evaporation cavity is relative to the large evaporation cavity and has smaller volume than the large evaporation cavity) is formed between the first inclined tooth 51 and the second inclined tooth 52.
According to the invention, the side teeth on the tooth main body are respectively provided with the two helical teeth, and the two helical teeth oppositely extend out, so that an evaporation cavity structure can be added between the two helical teeth under the evaporation working condition, the effect of increasing the density of the evaporation cavity on the heat exchange tube (the density of the evaporation cavity on the heat exchange tube with the same area is distributed) is achieved, the refrigerant evaporation is facilitated greatly, and the evaporation strengthening efficiency of the heat exchange tube is improved; under the condensation working condition, the helical teeth and the side teeth with the thorn-shaped structures are favorable for puncturing a refrigerant liquid film, and meanwhile, the helical teeth and the side teeth are used as the structures of the evaporation cavity under the evaporation working condition, so that the condensate is discharged in the circumferential direction, and the thermal resistance of the pipe wall is reduced; therefore, the evaporation heat exchange efficiency of the heat exchange tube and the condensation heat exchange efficiency of the heat exchange tube can be improved under both the heating working condition and the refrigerating working condition.
Preferably, the first and second electrodes are formed of a metal,
in longitudinal section: the width L1 of the tooth main body 3 is 0.4mm-0.7mm, preferably 0.5 mm; and/or the height h1 of the tooth body 3 is 0.6mm-1.0mm, preferably 0.85 mm; and/or the height h2 between the bottom of the side teeth 4 on the tooth main body 3 and the tube base body 2 is 0.3mm-0.7mm, preferably 0.5 mm. The tooth height, the tooth width and other dimensions of the tooth main bodies and the side teeth are preferably selected, the space volume of a large evaporation cavity between the tooth main bodies can be effectively increased, the tooth tops of the side teeth can form the effect of puncturing a liquid film during heating, but the effect is weakened too far away from a boundary layer if the tooth tops are too long, and the effect is not too short or an effective evaporation cavity cannot be formed.
Preferably, the first and second electrodes are formed of a metal,
the height h3 between the bottom of the helical tooth 5 and the tooth top of the helical tooth is 0.1mm-0.4mm, preferably 0.2 mm; and/or the included angle theta 1 of the two side teeth 4 is 15-60 degrees, preferably 45 degrees; and/or the included angle theta 2 of the two helical teeth 5 is 60-150 degrees, and preferably 90 degrees. This is the preferred dimensional relationship of the tooth crest height, the included angle and the side tooth included angle of the helical tooth of the present invention, and can effectively increase the space volume of the large evaporation chamber between the side teeth, and cannot make the distance between the tooth crests too small to allow the fluid to enter the large evaporation chamber, and increase the space volume of the small evaporation chamber between the two helical teeth, and cannot make the distance between the tooth crests too small to allow the fluid to enter the small evaporation chamber.
Preferably, the first and second electrodes are formed of a metal,
the tooth main body 3 and the two side teeth 4 are formed into Y-shaped teeth with Y-shaped longitudinal sections; and/or the free ends of the side teeth 4 and/or the helical teeth 5 are pointed. The tooth body and the side teeth form an optimal structure form, and a semi-closed large evaporation cavity for accommodating fluid can be formed by the side teeth between the two Y-shaped teeth, so that the evaporation heat exchange effect is improved; and the top through Y shape tooth forms most advanced refrigerant liquid film that punctures, and the top of skewed tooth forms most advanced also can further puncture the refrigerant liquid film, improves the condensation heat transfer effect.
Preferably, the first and second electrodes are formed of a metal,
the tooth main bodies 3 are arranged in a plurality, the tooth main bodies 3 are arranged at intervals, and a large evaporation cavity 7 is formed between two adjacent tooth main bodies 3. The evaporation cavity structure that fluid gets into and carries out the heat transfer can be formed through big evaporation cavity for the vaporization core obtains increasing, effectively improves evaporation heat transfer effect.
Preferably
A protruding structure 9 is convexly arranged on the outer wall of the tube base body 2 and positioned in the large evaporation cavity 7; and/or a plurality of the tooth bodies 3 are arranged on the outer wall of the pipe base body 2 along a spiral line to form a group of spiral teeth. The roughness of the wall surface can be increased through the protruding structure, the density of the vaporization core is increased, and the heat exchange effect of the evaporation working condition is enhanced. The spiral teeth form can enable the outer wall of the heat exchange tube to generate the effect of heat exchange enhancement on fluid along the spiral line, namely, a plurality of evaporation cavities arranged along the spiral line are provided during evaporation, and a plurality of fin tips arranged along the spiral line during condensation, so that the heat exchange effect on the fluid including evaporation and condensation can be respectively enhanced.
Preferably, the first and second electrodes are formed of a metal,
and a plurality of groups of spiral teeth are arranged on the outer wall of the tube base body 2 in an upward row, and the plurality of groups of spiral teeth are arranged at intervals. The spiral teeth are arranged at intervals, so that the effect of choked flow of the fluid at intervals is formed, and the evaporation heat exchange effect and the condensation heat exchange effect of the fluid along the axial direction are further improved.
Preferably, the first and second electrodes are formed of a metal,
the outer wall of the pipe base body 2 is also provided with at least one groove 8 along the axial direction; and/or the inner wall of the tube base body 2 is also provided with inner teeth 1. The teeth can be divided into a plurality of sections along the circumferential direction through the groove structure arranged on the outer wall of the tube matrix along the axial direction, so that the turbulent flow effect on fluid is improved, and the heat exchange is enhanced; and the heat exchange effect in the tube can be improved through the internal teeth.
The invention also provides a falling film heat exchanger which comprises the falling film heat exchange tube. According to the invention, the side teeth on the tooth main body are respectively provided with the two helical teeth, and the two helical teeth oppositely extend out, so that an evaporation cavity structure can be added between the two helical teeth under the evaporation working condition, the effect of increasing the density of the evaporation cavity on the heat exchange tube (the density of the evaporation cavity on the heat exchange tube with the same area is distributed) is achieved, the refrigerant evaporation is facilitated greatly, and the evaporation strengthening efficiency of the heat exchange tube is improved; under the condensation working condition, the helical teeth and the side teeth with the thorn-shaped structures are favorable for puncturing a refrigerant liquid film, and meanwhile, the helical teeth and the side teeth are used as the structures of the evaporation cavity under the evaporation working condition, so that the condensate is discharged in the circumferential direction, and the thermal resistance of the pipe wall is reduced; therefore, the evaporation heat exchange efficiency of the heat exchange tube and the condensation heat exchange efficiency of the heat exchange tube can be improved under both the heating working condition and the refrigerating working condition.
The invention also provides an air conditioner which comprises the falling film heat exchange tube or the falling film heat exchanger. The invention develops a falling film type efficient heat pump pipe with multiple evaporation cavities; the density of the evaporation cavity of the heat exchange tube is increased by processing the opposite oblique teeth on the teeth at the two sides of the Y-shaped tooth so as to achieve the purpose of enhancing the evaporation heat exchange efficiency.
The invention provides a falling film type efficient heat pump pipe with multiple evaporation cavities, which is characterized in that opposite oblique teeth are processed on two side teeth of a Y-shaped tooth to increase the density of evaporation cavities of a heat exchange pipe so as to achieve the purpose of enhancing the evaporation heat exchange efficiency. Two helical teeth are introduced into the Y-shaped teeth, so that the heat exchange area is increased. When the evaporation condition, because increased an evaporation chamber structure on every tooth, reached the effect of evaporation chamber density on the increase heat exchange tube, this evaporation of refrigerant of being favorable to extremely has promoted the evaporation strengthening efficiency of this heat exchange tube. Under the condensation working condition, the helical teeth and the side teeth with the thorn-shaped structures are favorable for puncturing a refrigerant liquid film, and meanwhile, the helical teeth and the side teeth are used as the structures of the evaporation cavity under the evaporation working condition, so that the condensate is discharged in the circumferential direction, and the thermal resistance of the pipe wall is reduced.
Fig. 4 shows a protrusion structure 9 at the evaporation cavity at the bottom of the heat pump tube, which increases the roughness of the wall surface, increases the density of the vaporization core, and enhances the heat exchange effect under the evaporation condition.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention. The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims (10)

1. A falling film heat exchange tube is characterized in that: the method comprises the following steps:
the pipe comprises a pipe base body (2) and a tooth main body (3) arranged on the outer wall of the pipe base body (2), wherein the upper end of the tooth main body (3) is provided with more than two oppositely arranged side teeth (4) which comprise a first side tooth (41) and a second side tooth (42) which are oppositely arranged, inclined teeth (5) are further arranged on the side teeth (4), and the inclined teeth (5) comprise first inclined teeth (51) which are convexly arranged on the first side teeth (41) in the direction towards the second side teeth (42) and second inclined teeth (52) which are convexly arranged on the second side teeth (42) in the direction towards the first side teeth (41), so that a semi-closed small evaporation cavity (6) is formed between the first inclined teeth (51) and the second inclined teeth (52).
2. The falling film heat exchange tube of claim 1, wherein:
in longitudinal section: the width L1 of the tooth main body (3) is 0.4mm-0.7 mm; and/or the height h1 of the tooth main body (3) is 0.6mm-1.0 mm; and/or the height h2 between the bottom of the side tooth (4) on the tooth main body (3) and the tube base body (2) is 0.3mm-0.7 mm.
3. The falling film heat exchange tube of claim 1 or 2, wherein:
the height h3 from the bottom of the helical tooth (5) to the top of the helical tooth is 0.1mm-0.4 mm; and/or the included angle theta 1 of the two side teeth (4) is 15-60 degrees; and/or the included angle theta 2 of the two helical teeth (5) is 60-150 degrees.
4. A falling film heat exchange tube according to any one of claims 1 to 3, wherein:
the tooth main body (3) and the two side teeth (4) are formed into Y-shaped teeth with Y-shaped longitudinal sections; and/or the free ends of the side teeth (4) and/or the helical teeth (5) are pointed.
5. The falling film heat exchange tube of any one of claims 1 to 4, wherein:
the tooth main bodies (3) are arranged in a plurality of intervals, and a large evaporation cavity (7) is formed between every two adjacent tooth main bodies (3).
6. The falling film heat exchange tube of claim 5, wherein:
a protruding structure (9) is convexly arranged on the outer wall of the tube base body (2) and positioned in the large evaporation cavity (7); and/or the plurality of tooth main bodies (3) are arranged on the outer wall of the pipe base body (2) along a spiral line to form a group of spiral teeth.
7. The falling film heat exchange tube of claim 6, wherein:
and a plurality of groups of spiral teeth are arranged on the outer wall of the tube base body (2) in an upward arrangement mode, and the plurality of groups of spiral teeth are arranged at intervals.
8. The falling film heat exchange tube of any one of claims 1 to 7, wherein:
the outer wall of the pipe base body (2) is also provided with at least one groove (8) along the axial direction; and/or the inner wall of the tube base body (2) is also provided with internal teeth (1).
9. A falling film heat exchanger is characterized in that: comprising the falling film heat exchange tube of any one of claims 1 to 8.
10. An air conditioner, characterized in that: comprising a falling film heat exchange tube according to any one of claims 1 to 8 or a falling film heat exchanger according to claim 9.
CN201911259724.7A 2019-12-10 2019-12-10 Falling film heat exchange tube, falling film heat exchanger and air conditioner Pending CN112944980A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911259724.7A CN112944980A (en) 2019-12-10 2019-12-10 Falling film heat exchange tube, falling film heat exchanger and air conditioner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911259724.7A CN112944980A (en) 2019-12-10 2019-12-10 Falling film heat exchange tube, falling film heat exchanger and air conditioner

Publications (1)

Publication Number Publication Date
CN112944980A true CN112944980A (en) 2021-06-11

Family

ID=76225624

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201911259724.7A Pending CN112944980A (en) 2019-12-10 2019-12-10 Falling film heat exchange tube, falling film heat exchanger and air conditioner

Country Status (1)

Country Link
CN (1) CN112944980A (en)

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