CN217275741U - Fin heat exchanger for tandem type air conditioner - Google Patents
Fin heat exchanger for tandem type air conditioner Download PDFInfo
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- CN217275741U CN217275741U CN202220434445.0U CN202220434445U CN217275741U CN 217275741 U CN217275741 U CN 217275741U CN 202220434445 U CN202220434445 U CN 202220434445U CN 217275741 U CN217275741 U CN 217275741U
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Abstract
A fin heat exchanger for an air conditioner, in particular to a fin heat exchanger for a tandem type air conditioner, which belongs to the technical field of heat exchangers and comprises a left fixed support plate, a right fixed support plate and a heat exchange tube assembly; the heat exchange tube assembly comprises more than 2 heat exchange units which are transversely arranged, each heat exchange unit comprises more than 4 heat exchange tubes, and the heat exchange tube assembly also comprises a connecting bent tube; one end of the fin heat exchanger for the air conditioner is a gaseous refrigerant inlet, and the other end of the fin heat exchanger for the air conditioner is a liquid refrigerant outlet; in the heat exchange tube assembly, each heat exchange unit is connected in series through a connecting bent tube; the heat exchange units sequentially arranged from the gas refrigerant inlet to the liquid refrigerant outlet are connected in series through the connecting bent pipe, and the diameters of the heat exchange pipes of the heat exchange units are sequentially decreased, so that the heat exchange pipe assembly becomes a series gradually-contracted heat pipe assembly. The utility model has the advantages that: the condensation and evaporation efficiency is higher.
Description
Technical Field
The utility model relates to a fin heat exchanger for idle call, in particular to fin heat exchanger for serial-type idle call belongs to heat exchanger technical field.
Background
The heat exchanger fins of the existing air conditioner are generally in an equal shape and are used as an evaporator to absorb heat of outdoor air in a heating condition. Especially in regions with very cold climates. When the surface temperature of the outdoor heat exchanger fin is lower than the air dew point temperature and less than 0 ℃, the surface of the air-cooled heat exchanger can frost. The frost layer not only hinders the heat transfer, but also increases the resistance of the air when flowing through the finned tube bundle, and the air volume will decrease according to the fan characteristics, resulting in a decrease in the heat transfer coefficient value of the cooler and thus a decrease in the heat exchange capacity of the air-cooled heat exchanger. The amount of frost formation is related to the shape of the fins used in the cooler. The fins in the same shape can cause the frosting to be fast, the thickness of the frost layer is increased, and the cooler with the fins in the same shape also has higher pressure drop and larger air flow resistance because the net flow area is smaller.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the problem that the distribution of the refrigerant can not be changed according to the adjustment of the running state of the phase change (gaseous and liquid) in the heat exchange process of the refrigerant in the prior art; the defect that the pressure of evaporation and condensation is deviated due to the fact that the pressure of the evaporation and the condensation is too large when a refrigerant is easy to condense (evaporate) in the operation process, so that the condensing and evaporating efficiency is reduced is overcome.
In order to realize the purpose, the utility model adopts the technical scheme that: a tandem type finned heat exchanger for an air conditioner comprises a left fixed support plate, a right fixed support plate and a heat exchange tube assembly, wherein one end of the heat exchange tube assembly is arranged on the left fixed support plate in a penetrating mode and is fixedly connected with the left fixed support plate, and the other end of the heat exchange tube assembly is arranged on the right fixed support plate in a penetrating mode and is fixedly connected with the right fixed support plate; the heat exchange tube assembly comprises more than 2 heat exchange units which are transversely arranged, each heat exchange unit comprises more than 4 heat exchange tubes which are longitudinally arranged, and the heat exchange tube assembly also comprises connecting bent tubes which are arranged at two ends of each heat exchange tube and connect two adjacent heat exchange tubes with each other; one end of the fin heat exchanger for the air conditioner is a gaseous refrigerant inlet, and the other end of the fin heat exchanger for the air conditioner is a liquid refrigerant outlet;
in the heat exchange tube assembly, the heat exchange tubes of each heat exchange unit are equal in size and are connected in series through connecting bent tubes; the heat exchange units sequentially arranged from the gas refrigerant inlet to the liquid refrigerant outlet are connected in series through connecting bent pipes, and the diameters of the heat exchange tubes of the heat exchange units are sequentially decreased, so that the heat exchange tube assembly becomes a series gradually-contracted heat tube assembly; the diameters of the heat exchange tubes of the heat exchange units sequentially arranged from the liquid refrigerant outlet to the gaseous refrigerant inlet are sequentially increased, so that the heat exchange tube assembly becomes a serial connection type gradually-expanded heat tube assembly;
the working principle is as follows: the high-temperature high-pressure gaseous refrigerant flows in the heat exchange tube, and the refrigerant exchanges heat with outdoor air through the heat exchange tube assembly, and condenses and changes the high-temperature high-pressure gaseous refrigerant into medium-temperature high-pressure liquid through heat exchange.
The heat exchange tube assembly comprises 3 heat exchange units, namely a heat exchange unit A, a heat exchange unit B and a heat exchange unit C, wherein the heat exchange unit A comprises 12 heat exchange tubes A, the heat exchange unit B comprises 12 heat exchange tubes B, and the heat exchange unit C comprises 12 heat exchange tubes C;
the connecting bent pipe comprises a connecting bent pipe A, a connecting bent pipe B, a connecting bent pipe C, a connecting bent pipe D and a connecting bent pipe E; the 12 heat exchange tubes A are connected in series with each other through connecting bent tubes A in sequence, the heat exchange units A are connected with the heat exchange units B through connecting bent tubes B, the 12 heat exchange tubes B are connected in series with each other through connecting bent tubes C in sequence, the heat exchange units B are connected with the heat exchange units C through connecting bent tubes D, and the 12 heat exchange tubes C are connected in series with each other through connecting bent tubes E in sequence;
the working process of the finned heat exchanger for the air conditioner is as follows: the inlet end of the heat exchange tube A is a gaseous refrigerant inlet, and the outlet end of the heat exchange unit C is a liquid refrigerant outlet; the gas refrigerant is a gas refrigerant when entering the upper part of the heat exchange tube A from the gas refrigerant inlet, gradually becomes a light gas-liquid mixed refrigerant when reaching the lower part of the heat exchange tube A, becomes a gas-liquid mixed refrigerant when reaching the heat exchange tube B, becomes a liquid refrigerant when reaching the middle part of the heat exchange tube C, becomes a super-cooled liquid refrigerant when reaching the bottom of the heat exchange tube C, and finally flows out from the liquid refrigerant outlet.
Heat exchange tube A, heat exchange tube B and heat exchange tube C are high-efficient heat transfer copper pipe, and heat exchange tube A's diameter is 9.52mm, and heat exchange tube B's diameter is 7mm, and heat exchange tube C's diameter is 6 mm.
The gas refrigerant inlet is connected with an outlet of an exhaust pipe of a compressor of the refrigeration system through the external pipe A, and the liquid refrigerant outlet is connected with an inlet of the thermostatic expansion valve through the external pipe B.
The diameter of the external connecting pipe A is 11.6mm, and the diameter of the external connecting pipe B is 6.8 mm.
The heat exchange tube assembly is characterized by also comprising hydrophilic aluminum fins matched with the heat exchange tube assembly, wherein the hydrophilic aluminum fins are sleeved on the heat exchange tube assembly and between the left fixed support plate and the right fixed support plate; through the mechanical compression and mechanical expansion of the hydrophilic aluminum fins and the heat exchange tube assembly, the maximum and closest contact area of the aluminum sheets with the hydrophilic aluminum fins and the heat exchange tubes of the heat exchange tube assembly is achieved, and the manufactured heat exchanger has the effect of high heat transfer efficiency.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model discloses through-flow volume according to the state adjustment heat exchanger of refrigerant makes all have the best heat transfer effect on the different states of refrigerant. The volume of the gaseous refrigerant is large so as to achieve an ideal heat exchange state, and the gaseous refrigerant is subjected to heat exchange by adopting a space with a changed diameter in a heat exchanger of the heat exchange tube assembly; the refrigerant volume is gradually reduced and the density is increased through gradual condensation, and the diameter of the heat exchange tube is gradually reduced; along with the stage that the condensation of the refrigerant state becomes gas-liquid mixed state, liquid state and supercooled liquid state, the diameter of the heat exchange tube also becomes smaller gradually along with the state of the refrigerant, so that the condensation and evaporation efficiency is improved;
2. the heat exchanger of the utility model changes the diameter change of the heat exchange tube according to the volume change of refrigeration, so that the condensation (evaporation) resistance of the refrigerant in the heat exchanger is reduced, the power consumption of the refrigerant in the double-pipe heat exchanger is reduced, the pressure drop performance loss can be effectively reduced, the pressure drop is lower, and the air flow resistance is smaller;
3. the low refrigerant resistance can increase the operation efficiency of the unit and meet the requirement of high energy efficiency ratio.
Drawings
FIG. 1 is a schematic diagram of: the utility model discloses the front view (part hydrophilic aluminium fin schematic diagram);
FIG. 2 is a diagram of: the utility model discloses a right-view enlarged image (without a left and a right fixed support plates);
FIG. 3 is a diagram of: the utility model discloses a right-view enlarged image;
FIG. 4 is a diagram of: FIG. 1 is an enlarged sectional view A-A;
FIG. 5 is a diagram of: the utility model is a three-dimensional picture (without hydrophilic aluminum fins);
FIG. 6 is a diagram of: fig. 1 is an enlarged view of a portion a.
Description of reference numerals: the heat exchange tube comprises a left fixed support plate 1, a right fixed support plate 2, a heat exchange tube assembly 3, a heat exchange tube 301, a heat exchange tube A30101, a heat exchange tube B30102, a connection elbow tube C30103, a connection elbow tube 302, a connection elbow tube A30201, a connection elbow tube B30202, a connection elbow tube C30203, a connection elbow tube D30204, a connection elbow tube E30205, a heat exchange unit A303, a heat exchange unit B304, a heat exchange unit C305, a gaseous refrigerant inlet 4, a liquid refrigerant outlet 5, an external connection tube A6, an external connection tube B7, and hydrophilic aluminum fins 8.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific examples, which are not intended to limit the present invention.
As shown in fig. 1 to 6, a finned heat exchanger for a tandem air conditioner, as shown in fig. 1 and 2, includes a left fixed support plate 1, a right fixed support plate 2 and a heat exchange tube assembly 3, wherein one end of the heat exchange tube assembly 3 is inserted through the left fixed support plate 1 and fixedly connected thereto, and the other end of the heat exchange tube assembly 3 is inserted through the right fixed support plate 2 and fixedly connected thereto; the heat exchange tube assembly 3 comprises 3 heat exchange units which are transversely arranged, each heat exchange unit comprises 12 heat exchange tubes 301 which are longitudinally arranged, and the heat exchange tube assembly 3 also comprises connecting bent tubes 302 which are arranged at two ends of each heat exchange tube 301 and connect two adjacent heat exchange tubes 301 with each other; one end of the fin heat exchanger for the air conditioner is a gaseous refrigerant inlet 4, and the other end of the fin heat exchanger for the air conditioner is a liquid refrigerant outlet 5;
as shown in fig. 2, 3 and 4, in the heat exchange tube assembly 3, the heat exchange tubes 301 of each heat exchange unit are equal in size and are connected in series with each other by a connecting bent tube 302; the heat exchange units sequentially arranged from the gas refrigerant inlet 4 to the liquid refrigerant outlet 5 are connected in series through a connecting bent pipe 302, and the diameters of the heat exchange pipes 301 of the heat exchange units are sequentially decreased, so that the heat exchange pipe assembly 3 becomes a series-connection gradually-shrinking type heat pipe assembly; the diameters of the heat exchange tubes 301 of the heat exchange units sequentially arranged from the liquid refrigerant outlet 5 to the gas refrigerant inlet 4 are sequentially increased in size, so that the heat exchange tube assembly 3 becomes a serial connection type divergent heat tube assembly;
the working principle is as follows: as shown in fig. 2, the high-temperature and high-pressure gaseous refrigerant flows inside the heat exchange tube 301, and the refrigerant exchanges heat with outdoor air through the heat exchange tube assembly 3, and is condensed and phase-changed into a medium-temperature and high-pressure liquid by superheat exchange.
As shown in fig. 2, 3 and 4, the 3 heat exchange units are a heat exchange unit a 303, a heat exchange unit B304 and a heat exchange unit C305, the heat exchange unit a comprises 12 heat exchange tubes a 30101, the heat exchange unit B comprises 12 heat exchange tubes B30102 and the heat exchange unit C comprises 12 heat exchange tubes C30103;
as shown in fig. 3, connection elbow 302 includes connection elbow a 30201, connection elbow B30202, connection elbow C30203, connection elbow D30204, and connection elbow E30205; the 12 heat exchange tubes 301A are connected in series with each other in sequence by a connecting bent tube a 30201, the heat exchange unit a 303 is connected in series with the heat exchange unit B304 by a connecting bent tube B30202, the 12 heat exchange tubes 301B are connected in series with each other in sequence by a connecting bent tube C30203, the heat exchange unit B304 is connected in series with the heat exchange unit C305 by a connecting bent tube D30204, and the 12 heat exchange tubes 301C are connected in series with each other in sequence by a connecting bent tube E30205;
as shown in fig. 2, the fin heat exchanger for air conditioner works: the inlet end of the heat exchange tube 301A is a gaseous refrigerant inlet 4, and the outlet end of the heat exchange unit C305 is a liquid refrigerant outlet 5; the gaseous refrigerant is gaseous refrigerant when entering the upper part of the heat exchange tube 301A from the gaseous refrigerant inlet 4, gradually changes into light gas-liquid mixed refrigerant when reaching the lower part of the heat exchange tube 301A, changes into gas-liquid mixed refrigerant when reaching the heat exchange tube 301B, changes into liquid refrigerant when reaching the middle part of the heat exchange tube 301C, changes into super-cooled liquid refrigerant when reaching the bottom of the heat exchange tube 301C, and finally flows out from the liquid refrigerant outlet 5.
As shown in fig. 4, the heat exchange tube 301A, the heat exchange tube 301B and the heat exchange tube 301C are high-efficiency heat exchange copper tubes, the diameter phi of the heat exchange tube 301A is 9.52mm, the diameter phi of the heat exchange tube 301B is 7mm, and the diameter phi of the heat exchange tube 301C is 6 mm.
As shown in fig. 1, 3, 5 and 6, the refrigerant system further comprises an external connection pipe A6 and an external connection pipe B7, the gaseous refrigerant inlet 4 is connected with an outlet (not shown) of a discharge pipe of a compressor of the refrigeration system through the external connection pipe A6, and the liquid refrigerant outlet 5 is connected with an inlet (not shown) of the thermostatic expansion valve through the external connection pipe B7.
As shown in fig. 1, 3, 5 and 6, the diameter of the extension tube A6 is 11.6mm, and the diameter of the extension tube B7 is 6.8 mm.
As shown in fig. 5 and 6, the heat exchange tube assembly further comprises a hydrophilic aluminum fin 8 matched with the heat exchange tube assembly 3, wherein the hydrophilic aluminum fin 8 is sleeved on the heat exchange tube assembly 3 and between the left fixed support plate 1 and the right fixed support plate 2; the maximum contact area and the closest fit of the aluminum sheet with the hydrophilic aluminum fin 8 and the heat exchange tube 301 of the heat exchange tube component 3 are achieved through mechanical compression and mechanical tube expansion of the hydrophilic aluminum fin 8 and the heat exchange tube component 3, so that the manufactured heat exchanger has the effect of high heat transfer efficiency.
The above-mentioned embodiments are only preferred embodiments of the present invention, and the ordinary changes and replacements within the technical scope of the present invention should be covered by the protection scope of the present invention.
Claims (6)
1. A tandem type finned heat exchanger for an air conditioner comprises a left fixed support plate, a right fixed support plate and a heat exchange tube assembly, wherein one end of the heat exchange tube assembly is arranged on the left fixed support plate in a penetrating mode and is fixedly connected with the left fixed support plate, and the other end of the heat exchange tube assembly is arranged on the right fixed support plate in a penetrating mode and is fixedly connected with the right fixed support plate; the heat exchange tube component also comprises connecting bent tubes which are arranged at the two ends of the heat exchange tube and connect the two adjacent heat exchange tubes with each other; idle call fin heat exchanger one end is gaseous state refrigerant import, the other end is liquid refrigerant export, its characterized in that: the heat exchange tube assembly comprises more than 2 heat exchange units which are transversely arranged, each heat exchange unit comprises more than 4 heat exchange tubes which are longitudinally arranged, and in the heat exchange tube assembly, the heat exchange tubes of the heat exchange units are equal in size and are connected in series with each other through connecting bent tubes; the heat exchange units sequentially arranged from the gas refrigerant inlet to the liquid refrigerant outlet are connected in series through the connecting bent pipe, and the diameters of the heat exchange pipes of the heat exchange units are sequentially decreased, so that the heat exchange pipe assembly becomes a series gradually-contracted heat pipe assembly.
2. A finned heat exchanger for a tandem air conditioner according to claim 1, characterized in that: the heat exchange tube assembly comprises 3 heat exchange units, namely a heat exchange unit A, a heat exchange unit B and a heat exchange unit C, wherein the heat exchange unit A comprises 12 heat exchange tubes A, the heat exchange unit B comprises 12 heat exchange tubes B, and the heat exchange unit C comprises 12 heat exchange tubes C;
the connecting bent pipe comprises a connecting bent pipe A, a connecting bent pipe B, a connecting bent pipe C, a connecting bent pipe D and a connecting bent pipe E; 12 heat exchange tube A are in order between each other with connecting return bend A series connection, connect with connecting return bend B between heat exchange unit A and the heat exchange unit B, and 12 heat exchange tube B are in order between each other with connecting return bend C series connection, connect with connecting return bend D between heat exchange unit B and the heat exchange unit C, and 12 heat exchange tube C are in order between each other with connecting return bend E series connection.
3. A finned heat exchanger for a tandem air conditioner according to claim 2, characterized in that: the heat exchange tube A, the heat exchange tube B and the heat exchange tube C are efficient heat exchange copper tubes, the diameter of the heat exchange tube A is 9.52mm, the diameter of the heat exchange tube B is 7mm, and the diameter of the heat exchange tube C is 6 mm.
4. A finned heat exchanger for a tandem air conditioner according to claim 1, characterized in that: the gas refrigerant inlet is connected with an outlet of an exhaust pipe of a compressor of the refrigeration system through the external pipe A, and the liquid refrigerant outlet is connected with an inlet of the thermostatic expansion valve through the external pipe B.
5. A finned heat exchanger for a tandem air conditioner according to claim 4, characterized in that: the diameter of the external connecting pipe A is 11.6mm, and the diameter of the external connecting pipe B is 6.8 mm.
6. A finned heat exchanger for a tandem air conditioner according to claim 1, characterized in that: the heat exchange tube assembly is characterized by further comprising hydrophilic aluminum fins matched with the heat exchange tube assembly, and the hydrophilic aluminum fins are sleeved on the heat exchange tube assembly and between the left fixed support plate and the right fixed support plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220434445.0U CN217275741U (en) | 2022-02-28 | 2022-02-28 | Fin heat exchanger for tandem type air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220434445.0U CN217275741U (en) | 2022-02-28 | 2022-02-28 | Fin heat exchanger for tandem type air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217275741U true CN217275741U (en) | 2022-08-23 |
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ID=82858667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220434445.0U Active CN217275741U (en) | 2022-02-28 | 2022-02-28 | Fin heat exchanger for tandem type air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217275741U (en) |
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2022
- 2022-02-28 CN CN202220434445.0U patent/CN217275741U/en active Active
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