CN209744699U

CN209744699U - Anti-freezing type surface air cooler

Info

Publication number: CN209744699U
Application number: CN201920279306.3U
Authority: CN
Inventors: 朱斌
Original assignee: LIMA AIR CONDITIONER ENGINEERING Ltd YANCHENG CITY
Current assignee: LIMA AIR CONDITIONER ENGINEERING Ltd YANCHENG CITY
Priority date: 2019-03-06
Filing date: 2019-03-06
Publication date: 2019-12-06
Anticipated expiration: 2029-03-06

Abstract

The utility model discloses an anti-freezing surface cooler, which comprises a liquid inlet pipe, a liquid outlet pipe, a heat exchange pipe, fins, an upper pipe plate, a side pipe plate, a lower pipe plate and a drying device, wherein the upper pipe plate, the side pipe plate and the lower pipe plate are hot galvanized plates or stainless steel square pipes to form a rectangular frame; the fins are vertically arranged, and two ends of the fins are respectively fixed on the upper tube plate and the lower tube plate; the liquid inlet pipe and the liquid outlet pipe are respectively positioned at the upper part and the lower part and are respectively communicated with the two ends of the heat exchange pipe, the drying device comprises a fan and a heat source, the fins are hydrophilic coating aluminum fins and are turned over twice, the utility model overcomes the defect that the traditional surface cooler is easy to accumulate water to freeze in winter and further cause pipeline burst, and improves the anti-freezing capacity of the air conditioning unit; the air quantity of the unit is reduced and the heat exchange efficiency is reduced due to the fact that condensed water is bridged, and the heating effect can be achieved temporarily when no heating medium exists.

Description

Anti-freezing type surface air cooler

Technical Field

The utility model belongs to the air conditioning unit field, concretely relates to type surface cooler prevents frostbite.

Background

the surface air cooler is an important heat exchange device in an air conditioning unit, plays a role in refrigerating and heating, and is generally made of an aluminum fin and a copper pipe which penetrates through the aluminum fin and is bent in a U-shaped roundabout manner. When the surface cooler is stopped in winter, the refrigerant water in the surface cooler must be drained, however, the pipeline structure in the traditional surface cooler is arranged in a U-shaped roundabout mode, and after the refrigerant water is drained in winter, part of the refrigerant water still can be accumulated in the roundabout position, so that the pipeline is frozen and burst.

Meanwhile, in the existing surface air cooler, when the air temperature of a boundary layer is lower than the dew point temperature of main air, a dehumidifying and cooling process, namely a wet working condition, is generated, and condensed water is easy to bridge, so that the air quantity of a unit is reduced and the heat exchange efficiency is reduced.

SUMMERY OF THE UTILITY MODEL

The above-mentioned not enough to prior art exists, the to-be-solved technical problem of the utility model is that current surface cooler refrigerant water is difficult for arranging to the greatest extent to and during the wet operating mode, the comdenstion water easily "bridges" and causes the unit amount of wind to reduce and heat exchange efficiency reduces.

In order to solve the technical problem, the utility model discloses a following technical scheme: an anti-freezing surface air cooler comprises a liquid inlet pipe, a liquid outlet pipe, a heat exchange pipe, fins, an upper pipe plate, a side pipe plate, a lower pipe plate and a drying device,

The upper tube plate, the side tube plate and the lower tube plate are hot galvanized plates or stainless steel square tubes to form a rectangular frame, and the heat exchange tubes are bent in a reciprocating manner and are horizontally arranged on the side tube plate; the fins are vertically arranged, and two ends of the fins are respectively fixed on the upper tube plate and the lower tube plate;

The liquid inlet pipe and the liquid outlet pipe are respectively positioned at the upper part and the lower part and are respectively communicated with the two ends of the heat exchange pipe,

The drying device comprises a fan and a heat source, the fan and the heat source are connected with a power supply cabinet of the air conditioning unit through power lines, the fan and the heat source are arranged on the upper tube plate, an air outlet of the fan is connected with the heat source and then connected into the liquid inlet pipe through a hot air pipe, and a conveying switch is arranged between the heat source and the liquid inlet pipe.

further, the delivery switch is a stop valve.

Further, the heat source is a heating resistance wire or a heating rod.

Further, the heat exchange tube is a thin-wall red copper tube.

Further, the fins are hydrophilic coating aluminum fins and are flanged twice.

Further, the liquid inlet pipe and the liquid outlet pipe are at least one of the following: carbon steel pipes, carbon steel hot-dip galvanized pipes and stainless steel pipes.

further, the fin distance is 2.8-3.2 mm.

The utility model discloses a theory of operation:

Adopt drying device, have two aspects effects, firstly can discharge refrigerant water as far as possible, weather remaining refrigerant water through the hot-air, secondly can play the heating effect temporarily when no hot water, heat medium.

The heat and moisture exchange of the surface cooler is carried out under the action of the temperature difference and the water vapor partial pressure difference between the main air and the boundary layer air which is tightly attached to the outer surface of the heat exchanger. It can realize two air treatment processes: when the temperature of the boundary layer air is lower than the dew point temperature of the main body air, a dehumidifying and cooling process or a wet cooling process, namely a wet working condition, is generated; when the temperature of the boundary layer air is lower than the temperature of the main body air but is higher than the dew point temperature, an equal-humidity cooling process, namely a dry working condition, occurs. In the dehumidification cooling process, because the temperature difference and the water vapor partial pressure difference exist between the boundary layer air and the main body air, sensible heat exchange and latent heat exchange accompanied with the humidity exchange exist on the surface of the heat exchanger. Therefore, the surface air cooler under the wet condition has larger heat exchange capacity than that under the dry condition, or for the same surface air cooler, when the temperature of the processed air dry bulb and the water temperature are kept unchanged, the higher the temperature of the air wet bulb is, the larger the cooling and dehumidifying capacity of the surface air cooler is.

However, in wet working conditions, condensed water is easy to bridge, so that the air quantity of the unit is reduced and the heat exchange efficiency is reduced. The fins of the surface cooler adopt hydrophilic coating aluminum fins, and the hydrophilic coating can effectively improve the hydrophilicity of the fins, so that condensed water is uniformly distributed on the fins, and the phenomenon that the air volume of a unit is reduced and the heat exchange efficiency is reduced due to bridging of the condensed water is avoided.

the utility model has the advantages that:

1. the defect that the pipeline bursts due to the fact that water is easy to accumulate in the traditional surface cooler and the pipeline freezes in winter is overcome, and the anti-freezing capacity of the air conditioning unit is improved;

2. The fins are hydrophilic, so that condensed water is uniformly distributed on the fins, water bridges among the aluminum fins are eliminated, and the reduction of unit air volume and the reduction of heat exchange efficiency caused by the bridging of the condensed water are avoided.

3. the device has simple structure, and can temporarily play a heating effect when no hot water or heating medium exists.

drawings

Fig. 1 is the structure schematic diagram of the anti-freezing surface air cooler of the present invention.

in the figure: the heat exchanger comprises a power line 1, a fan 2, a heat source 3, a conveying switch 4, a liquid inlet pipe 5, a liquid outlet pipe 6, a heat exchange pipe 7, fins 8, an upper pipe plate 9, a side pipe plate 10, a lower pipe plate 11 and a hot air pipe 12.

Detailed Description

the following detailed description of the present invention will be made in conjunction with the accompanying drawings and specific embodiments.

as shown in fig. 1, the anti-freezing surface cooler comprises a liquid inlet pipe 5, a liquid outlet pipe 6, a heat exchange pipe 7, fins 8, an upper pipe plate 9, a side pipe plate 10, a lower pipe plate 11 and a drying device,

The upper tube plate 9, the side tube plates 10 and the lower tube plate 11 are hot-galvanized plates or stainless steel square tubes to form a rectangular frame, and the heat exchange tubes 7 are bent in a reciprocating manner and are horizontally arranged on the side tube plates 10; the fins 8 are vertically arranged, and two ends of each fin are respectively fixed on the upper tube plate 9 and the lower tube plate 11;

The liquid inlet pipe 5 and the liquid outlet pipe 6 are respectively positioned at the upper part and the lower part and are respectively communicated with the two ends of the heat exchange pipe 7,

The drying device comprises a fan 2 and a heat source 3, the fan 2 and the heat source 3 are connected with a power supply cabinet of the air conditioning unit through a power line 1, the fan 2 and the heat source 3 are arranged on an upper tube plate 9, an air outlet of the fan 2 is connected with the heat source 3 and then connected into a liquid inlet pipe 5 through a hot air pipe 12, and a conveying switch 4 is arranged between the heat source 3 and the liquid inlet pipe 5.

In practical application, the delivery switch 4 is a stop valve.

In practical application, the heat source 3 is a heating resistance wire or a heating rod.

In practical application, the heat exchange tube 7 is a thin-wall red copper tube.

In practical application, the fin 8 is a hydrophilic coating aluminum fin 8 and is flanged twice.

In practical application, the liquid inlet pipe 5 and the liquid outlet pipe 6 are at least one of the following: carbon steel pipes, carbon steel hot-dip galvanized pipes and stainless steel pipes.

through a plurality of experiments, the distance between the 8 fins is 2.8-3.2 mm, so that the heat exchange efficiency is highest.

The utility model discloses a theory of operation:

however, in wet working conditions, condensed water is easy to bridge, so that the air quantity of the unit is reduced and the heat exchange efficiency is reduced. This surface cooler's fin 8 adopts hydrophilic coating aluminium fin 8, and hydrophilic coating can effectively improve fin 8 hydrophilicity, makes comdenstion water evenly distributed on fin 8, avoids comdenstion water "bridging" and causes the unit amount of wind to reduce and heat exchange efficiency reduces.

In summary, the utility model has simple structure, overcomes the defect that the traditional surface air cooler is easy to accumulate water and is frozen in winter to cause pipeline burst, and improves the anti-freezing capability of the air conditioning unit; the air quantity of the unit is reduced and the heat exchange efficiency is reduced due to the 'bridging' of the condensed water is avoided, and the heating effect can be temporarily achieved when no hot water or heating medium exists.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the foregoing embodiments are merely illustrative of the technical concepts and features of the present invention, and the purpose of the present invention is to provide a person skilled in the art with the ability to understand the contents of the present invention and implement the same, and not to limit the scope of the present invention.

Claims

1. The utility model provides an anti-freezing type surface cooler, includes feed liquor pipe (5), drain pipe (6), heat exchange tube (7), fin (8), goes up tube sheet (9), side tube sheet (10), lower tube sheet (11), its characterized in that: also comprises a drying device which is used for drying,

The upper tube plate (9), the side tube plates (10) and the lower tube plate (11) are hot-galvanized plates or stainless steel square tubes to form a rectangular frame, and the heat exchange tubes (7) are bent in a reciprocating manner and are horizontally arranged on the side tube plates (10); the fins (8) are vertically arranged, and two ends of each fin are respectively fixed on the upper tube plate (9) and the lower tube plate (11);

The liquid inlet pipe (5) and the liquid outlet pipe (6) are respectively positioned at the upper part and the lower part and are respectively communicated with the two ends of the heat exchange pipe (7),

The drying device comprises a fan (2) and a heat source (3), the fan (2) and the heat source (3) are connected with a power supply cabinet of the air conditioning unit through a power line (1), the fan (2) and the heat source (3) are arranged on an upper tube plate (9), an air outlet of the fan (2) is connected with the heat source (3) and then is connected into a liquid inlet pipe (5) through a hot air pipe (12), and a conveying switch (4) is arranged between the heat source (3) and the liquid inlet pipe (5).

2. The antifreeze surface air cooler as set forth in claim 1, wherein: the delivery switch (4) is a stop valve.

3. The antifreeze surface air cooler as set forth in claim 2, wherein: the heat source (3) is a heating resistance wire or a heating rod.

4. The antifreeze surface air cooler as set forth in claim 3, wherein: the heat exchange tube (7) is a thin-wall red copper tube.

5. The antifreeze surface air cooler as set forth in claim 4, wherein: the fins (8) are hydrophilic coating aluminum fins (8) and are flanged twice.

6. The antifreeze surface cooler as set forth in any one of claims 1 to 5, wherein: the liquid inlet pipe (5) and the liquid outlet pipe (6) are at least one of the following components: carbon steel pipes, carbon steel hot-dip galvanized pipes and stainless steel pipes.

7. The antifreeze surface air cooler as set forth in claim 6, wherein: the distance between the fins (8) is 2.8-3.2 mm.