CN210951818U

CN210951818U - Heat exchange assembly, condenser and air conditioner

Info

Publication number: CN210951818U
Application number: CN201921970731.3U
Authority: CN
Inventors: 徐勇程; 杨瑞琦; 郭忠玉; 马腾飞
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2019-11-14
Filing date: 2019-11-14
Publication date: 2020-07-07
Anticipated expiration: 2029-11-14

Abstract

The application provides a heat exchange assembly, a condenser and an air conditioner. The heat exchange assembly comprises a heat exchange piece and a spraying piece, wherein the spraying piece is arranged in the heat exchange piece, and spraying holes are formed in the spraying piece, so that heat exchange fluid is sprayed out of the surfaces of the heat exchange piece through the spraying holes. Spray the piece and directly establish in this heat transfer piece, need not to increase heat transfer piece equipment size and just can spray heat transfer fluid to heat transfer piece surface in inside, spray more accurate effective simultaneously, improved the heat transfer effect.

Description

Heat exchange assembly, condenser and air conditioner

Technical Field

The application belongs to the technical field of condensers, and particularly relates to a heat exchange assembly, a condenser and an air conditioner.

Background

In a refrigeration system, the heat exchange mode of a condenser is mainly wind cooling and water cooling, and along with the continuous development of the refrigeration technology, the evaporative condenser with higher heat exchange efficiency and more water saving is designed to be more and more concerned by people.

The prior art provides a water-cooling spraying air-cooling finned condenser, which sprays cold water on fins by paving spraying copper pipes with holes at the top of the condenser, wherein the spraying mode can improve the air-cooling effect, but the copper pipes are difficult to ensure the uniform wetting of the surfaces of the fins arranged under a plurality of rows of fins through the water outlet mode with holes formed at one side, and the continuous water outlet mode ensures that liquid bridges are easy to appear among the fins close to water outlet holes to increase the wind resistance; for fins arranged in multiple rows, it is difficult to ensure complete wetting of the fin surfaces in this manner so that a uniform liquid film cannot be formed.

The spray mass transfer condenser is also technically provided, flowing water is atomized by an atomizing nozzle and then sprayed to a fin type condenser, the heat exchange coefficient can be improved by the heat convection with phase change, a certain amount of atomized small liquid drops can pass through fin gaps along with inlet air and escape to the environment, the water saving performance of the condenser cannot be fully exerted, and meanwhile, the size and the manufacturing cost of the condenser are increased due to the installation of atomizing equipment.

SUMMERY OF THE UTILITY MODEL

Therefore, the technical problem that this application will be solved lies in providing a heat exchange assembly, condenser and air conditioner, can not increase under the equipment size condition, makes the heat transfer piece have higher heat transfer effect.

In order to solve the problem, the application provides a heat exchange assembly, including heat transfer spare and spraying, it establishes to spray the piece in the heat transfer spare, be equipped with on spraying the piece and spray the hole, by spray the hole to heat transfer spare is blowout heat transfer fluid on the surface.

Preferably, the heat exchange piece comprises a plurality of heat exchange fins, and the spraying piece is arranged on the plurality of heat exchange fins in a penetrating way; the spraying holes are formed between the adjacent heat exchange fins, and/or the length of the spraying holes in the arrangement direction of the adjacent heat exchange fins is larger than the distance between the adjacent heat exchange fins.

Preferably, the spraying member comprises a plurality of spraying pipes, and the spraying holes are arranged along the axial direction and/or the circumferential direction of the spraying pipes.

Preferably, the cross-sectional area of the spray holes is gradually increased in a direction in which the heat exchange fluid flows in the spray holes.

Preferably, when a plurality of spraying holes are formed in the circumferential direction of the spraying pipe, the diameter of the spraying holes sprayed in the first length direction of the heat exchange fins is smaller than the diameter of the spraying holes sprayed in the second length direction of the heat exchange fins; the length of the heat exchange fin in the first length direction is larger than that in the second length direction.

Preferably, the spraying pipes are provided with a plurality of spraying pipes which are uniformly distributed on the heat exchange fins.

Preferably, the spray pipes are distributed at intervals along the first extending direction of the heat exchange fins.

Preferably, the sprinkling pipe comprises a reciprocating combined pipe, and the reciprocating combined pipe comprises an inlet pipe and an outlet pipe which are arranged in parallel at intervals; and/or, the spray tube comprises a straight tube.

Preferably, the spraying holes are formed in one of two opposite side walls of the inlet pipe and the outlet pipe.

According to another aspect of the present application, there is provided a condenser comprising the heat exchange assembly as described above.

Preferably, the condenser further comprises a controller for controlling the spraying member to spray in an intermittent manner.

According to another aspect of the present application, there is provided an air conditioner comprising the heat exchange assembly as described above or the condenser as described above.

The application provides a pair of heat exchange assembly, include heat transfer spare and spray the piece, it establishes to spray the piece in the heat transfer spare, it sprays the hole to be equipped with on the piece, by spray the hole to heat transfer spare is the blowout heat transfer fluid on the surface. Spray the piece and directly establish in this heat transfer piece, need not to increase heat transfer piece equipment size and just can spray heat transfer fluid to heat transfer piece surface in inside, spray more accurate effective simultaneously, improved the heat transfer effect.

Drawings

FIG. 1 is a schematic structural diagram of a heat exchange assembly according to an embodiment of the present application;

FIG. 2 is a schematic structural view of spray holes in a heat exchange assembly according to an embodiment of the present application;

FIG. 3 is another schematic view of the spray holes in the heat exchange assembly according to the embodiment of the present application;

FIG. 4 is a schematic view of an inlet tube of a reciprocating spray tube in accordance with an embodiment of the present application;

FIG. 5 is a schematic view of an outlet tube of a reciprocating spray tube according to an embodiment of the present disclosure;

FIG. 6 is a schematic structural diagram of an air conditioner according to an embodiment of the present application;

fig. 7 is another schematic structural diagram of an air conditioner according to an embodiment of the present application.

The reference numerals are represented as:

1. heat exchange fins; 11. a heat exchange pipe; 2. a spray tube; 21. a longitudinal bore; 22. a transverse bore; 23. a side hole; 24. feeding a pipe; 25. discharging a pipe; A. a condenser; a1, a collecting tank; a2, water source; a3, a water pump; B. a restrictor; C. an evaporator; D. a compressor.

Detailed Description

Referring to fig. 1 to 5 in combination, according to an embodiment of the present application, a heat exchange assembly includes a heat exchange member and a spraying member, the spraying member is disposed in the heat exchange member, the spraying member is provided with spraying holes, and a heat exchange fluid is sprayed from the spraying holes onto a surface of the heat exchange member.

The traditional spraying structure is directly arranged beside the heat exchange piece, if cold water spraying equipment is arranged above the heat exchange piece, the spraying piece is arranged in the heat exchange piece by the heat exchange assembly, so that relatively speaking, the size of the whole heat exchange piece does not need to be increased, and spraying heat exchange can be realized; meanwhile, the spraying piece is sprayed from the inside of the heat exchange piece, so that the sprayed heat exchange fluid can more accurately and effectively reach the surface of the heat exchange piece, and the heat exchange efficiency is higher.

In some embodiments, the heat exchange member comprises a plurality of heat exchange fins 1, and the spraying member is arranged on the plurality of heat exchange fins 1 in a penetrating manner; the spraying hole is established between adjacent heat transfer fin 1, as shown in fig. 2, the spraying hole is round hole or similar aperture structure, and/or, the spraying hole can be established to rectangular hole structure, the long limit of this rectangular hole with along 1 array orientation of looks heat transfer fin unanimous, the length on this long limit is greater than adjacent heat transfer fin 1's interval for the spraying hole can correspond and stride across a plurality of heat transfer fins 1, and one spraying hole can spray the fluid to a plurality of heat transfer fins 1 simultaneously promptly.

Usually, the heat exchange fin 1 is sleeved on the heat exchange tube 11, and the heat exchange fin 1 is used for increasing the heat exchange area. On the extending direction along heat exchange tube 11, a plurality of heat transfer fins 1 set gradually the fixed orifices, and the piece of being convenient for spray wears to establish fixedly.

In some embodiments, the spray member comprises a plurality of spray pipes 2, and the spray holes are arranged axially and/or circumferentially along the spray pipes 2. The heat exchange member is arranged in the axial direction and/or the circumferential direction, and can be sprayed on the heat exchange member in multiple directions, so that heat exchange fluid is uniformly dispersed, and the heat exchange efficiency is improved.

In some embodiments, the cross-sectional area of the spray holes increases gradually in the direction of flow of the heat exchange fluid in the spray holes. The spraying holes are in a conical hole structure, so that sprayed fluid is in a fan shape, the spraying area is increased, and the heat exchange efficiency is improved.

In some embodiments, when a plurality of spray holes are provided in the circumferential direction of the spray pipe 2, the diameter of the spray holes sprayed in the first length direction of the heat exchange fin 1 is smaller than the diameter of the spray holes in the second length direction of the heat exchange fin 1; the length of the heat exchange fin in the first length direction is larger than that in the second length direction. As shown in fig. 1, the heat exchange fin 1 is square, the first length direction is the extension direction with the longer side length, the aperture of the spraying hole in the direction is small, so that the flow rate of the sprayed fluid is large, the second length direction is the extension direction with the shorter side length, the aperture of the spraying hole in the direction is large, the flow rate of the fluid is small, so that the fluid is prevented from being sprayed out of the heat exchange fin 1 in the second extension direction, and the effect of saving resources is achieved.

A third length direction may also be provided between the two directions, the aperture of the respective spray orifice being between the apertures in the first and second length directions. Specifically, as shown in fig. 2 and 3, a longitudinal hole 21 in a first longitudinal direction, a lateral hole 22 in a second longitudinal direction, and a lateral hole 23 in a third longitudinal direction.

In some embodiments, the spray pipes 2 are provided with a plurality of spray pipes which are uniformly distributed on the heat exchange fins 1, and can spray a plurality of positions on the heat exchange fins 1, so that a uniform heat exchange effect is generated, and the heat exchange efficiency is high. Specifically, interval distribution in the first extension direction of sparge pipe 2 along heat transfer fin 1, as above, first extension direction is the direction of the great length of heat transfer fin 1, adopts interval distribution's sparge pipe 2, can guarantee to spray and the heat transfer effect, reduces the assembly degree of difficulty simultaneously.

In some embodiments, the sprinkler tube 2 may include a reciprocating manifold including an inlet tube 24 and an outlet tube 25 in spaced juxtaposition in addition to a straight tube configuration. The reciprocating combined pipe structure can be in the form of a U-shaped pipe or a spiral pipe and the like, so that heat exchange fluid can flow conveniently, and power sources can be reduced. Wherein, advance and be equipped with the spraying hole on the lateral wall in two relative lateral walls of pipe 24 and exit tube 25, because advance to be two pipe overlap regions between pipe 24 and the exit tube 25, only need be equipped with on a lateral wall and spray the hole and can accomplish and spray.

According to another embodiment of the present application, a condenser a includes a heat exchange assembly as described above.

In some embodiments, the condenser a further comprises a controller, wherein the controller is used for controlling the spraying piece to spray in an intermittent mode, so that a liquid bridge formed between the heat exchange fins 1 due to continuous spraying of fluid can be avoided, wind resistance is increased, and heat exchange effect is reduced. The controller may employ a PLC control unit, or other similar control unit.

As shown in fig. 6 and 7, according to another embodiment of the present application, an air conditioner includes the heat exchange assembly as described above or the condenser a as described above.

By adopting the air conditioning system of the condenser A, high-temperature and high-pressure refrigerant gas discharged by the compressor D enters the condenser A to dissipate heat to the external environment, in the application, the spray pipe 2 is arranged in a hole in the condenser A after the heat exchange pipe 11 is drawn out, so that the surrounding heat exchange fins 1 are wetted to form a liquid film, the liquid film slides on the surfaces of the fins under the action of gravity, and the liquid is rapidly evaporated on the surfaces of the heat exchange fins 1 under the action of the fan to increase the heat exchange efficiency of the heat exchange fins; meanwhile, for avoiding the continuous water outlet of the spray pipe 2, a liquid bridge is formed between fins, the wind resistance is increased, and the heat exchange effect is reduced, the intermittent water outlet in the spray pipe 2 can be controlled by a PLC control unit, and the upper sectional arrangement of the spray pipe 2 in the condenser A ensures that the continuous liquid films are uniformly distributed on the surfaces of the upper and lower fins, so that the liquid films on the surfaces of the fins disappear after the liquid on the surfaces of the heat exchange fins 1 is rapidly evaporated under the action of a fan.

Liquid in an inlet pipe of the spraying pipe 2 is supplied from a water source A2 by a water pump A3, the inflow direction is opposite to the flowing direction of refrigerant in the pipe, so that the heat exchange efficiency can be improved, the liquid on the surface of the heat exchange fin 1 flows to the bottom of the condenser A and is collected by a collecting groove A1, and the liquid in the collecting groove A1 and the liquid in an outflow pipe return to the external water source A2 for recycling; after being condensed by the condenser A, the refrigerant is decompressed by the throttle valve and then enters the evaporator C to absorb heat, and then is changed into refrigerant gas again and returns to the compressor D, so that the cycle is repeated.

The specific arrangement of the spray pipes 2 is as shown in fig. 1, in the heat exchanger with three rows of ten pipes arranged, the spray pipes 2 are arranged in the middle row at intervals and are arranged at the symmetrical center of the heat exchanger to ensure the uniform distribution of the sprayed water on the fins at the two sides.

As shown in fig. 2, a schematic diagram of a spraying hole is formed on a spraying pipe 2, the spraying hole is formed at the gap between two fins, so that the outlet water can be sprayed on the fins, meanwhile, the hydrophilic coating on the surfaces of the fins is easy to spray water to form a water film on the surfaces of the fins, the outlet water shape of the spraying pipe 2 in a gradual-change hole-forming mode is fan-shaped, the outlet water area is increased, and the sizes of the transverse hole 22, the side hole 23 and the longitudinal hole 21 are sequentially reduced, so that the longitudinal spraying speed is the maximum, the transverse spraying speed is the minimum, and the condenser A is prevented from flowing out of the outer space when the fins on two sides are wetted by transversely sprayed water; or as shown in fig. 3, the spray pipe 2 is provided with rectangular spray holes, the hole opening mode is similar to the circular hole opening mode, the area from the inside of the pipe to the outside of the pipe is gradually increased, the rectangular hole opening mode can reduce the number of axial holes, namely, one hole opening can correspond to a plurality of fin gaps, and the processing cost is reduced; the opening on the tube can be the combination of various shapes; the spray pipes 2 arranged on the upper section and the lower section can be respectively selected to be combined by different shape holes, such as rectangular holes for the upper section and round holes for the lower section.

As shown in fig. 4, the inlet pipe 24 of the spray pipe 2 is circumferentially perforated, and the bottom of the inlet pipe 24 does not need to be perforated because the bottom fin wets the top of the spray water from the outlet pipe 25; as shown in fig. 5, the bottom of the outlet pipe 25 of the spray pipe 2 is provided with an opening, which is different from the inlet pipe 24, the bottom outlet water can ensure that the wettability of the fin surface below the outlet pipe 25 is easy to form a water film, and the liquid film formed on the hydrophilic fins wetted on the periphery of the spray pipe 2 flows to the bottom end of the fin along the fin surface, because the latent heat of vaporization of water is large (the latent heat of vaporization of water at 0 ℃ is about 2500kJ/kg), the effect of the evaporative cooling heat exchanger after the spray pipe 2 is installed is far higher than that of single air cooling.

Fig. 7 shows adopting the utility model discloses a condenser A air conditioning system, spray pipe 2 are one end and intake, and one end goes out water, two adjacent spray pipes 2 simultaneously, and it also need not the trompil to be in upper portion pipe bottom.

It is easily understood by those skilled in the art that the above embodiments can be freely combined and superimposed without conflict.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application. The foregoing is only a preferred embodiment of the present application, 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 application, and these modifications and variations should also be considered as the protection scope of the present application.

Claims

1. The heat exchange assembly is characterized by comprising a heat exchange piece and a spraying piece, wherein the spraying piece is arranged in the heat exchange piece, and spraying holes are formed in the spraying piece, so that heat exchange fluid is sprayed out of the surfaces of the heat exchange piece through the spraying holes.

2. The heat exchange assembly according to claim 1, wherein the heat exchange member comprises a plurality of heat exchange fins (1), and the spraying member is arranged on the plurality of heat exchange fins (1) in a penetrating manner; the spraying holes are formed between the adjacent heat exchange fins (1), and/or the length of the spraying holes in the arrangement direction of the adjacent heat exchange fins (1) is larger than the distance between the adjacent heat exchange fins (1).

3. A heat exchange assembly according to claim 2, characterized in that the spray member comprises a plurality of spray tubes (2), and the spray holes are arranged axially and/or circumferentially along the spray tubes (2).

4. A heat exchange assembly according to claim 1 or claim 3, wherein the cross-sectional area of the spray holes increases progressively in the direction of flow of the heat exchange fluid in the spray holes.

5. A heat exchange assembly according to claim 3, wherein when a plurality of the spray holes are provided in the circumferential direction of the spray pipe (2), the diameter of the spray holes sprayed in the first length direction of the heat exchange fin (1) is smaller than the diameter of the spray holes sprayed in the second length direction of the heat exchange fin (1); the length of the heat exchange fin (1) in the first length direction is larger than that in the second length direction.

6. A heat exchange assembly according to claim 5, characterized in that the spray tubes (2) are provided in a plurality and evenly distributed on the heat exchange fins (1).

7. A heat exchange assembly according to claim 6, characterized in that the sprinkling tubes (2) are spaced apart along the first extension direction of the heat exchange fin (1).

8. A heat exchange assembly according to claim 3, wherein the spray tube (2) comprises a reciprocating combined tube comprising an inlet tube (24) and an outlet tube (25) arranged in spaced juxtaposition; and/or, the spray tube comprises a straight tube.

9. A heat exchange assembly according to claim 8, characterised in that the spray holes are provided in one of the opposite walls of the inlet and outlet tubes (24, 25).

10. A condenser comprising a heat exchange assembly as claimed in any one of claims 1 to 9.

11. The condenser according to claim 10, wherein said condenser (a) further comprises a controller for controlling said spray member to spray in an intermittent manner.

12. An air conditioner characterized by comprising a heat exchange assembly according to any one of claims 1 to 9 or a condenser (a) according to any one of claims 10 to 11.