CN209978654U

CN209978654U - Small-bore heat exchanger

Info

Publication number: CN209978654U
Application number: CN201920666861.1U
Authority: CN
Inventors: 张和君; 贺仕林
Original assignee: Ningbo De Industry Polytron Technologies Inc
Current assignee: Ningbo De Industry Polytron Technologies Inc
Priority date: 2019-05-10
Filing date: 2019-05-10
Publication date: 2020-01-21
Anticipated expiration: 2029-05-10

Abstract

The utility model discloses a small-bore heat exchanger, including the mutual parallel fin of polylith, be provided with the through-hole on the fin, through-hole department is provided with first turn-ups, first turn-ups outer lane is the taper shape that the diameter diminishes gradually, first turn-ups's tip is provided with round second turn-ups, the second turn-ups turns over to the book, the second turn-ups with first turn-ups is certain angle, the former one on the fin first turn-ups inserts one after the fin on the fin in the through-hole. When the heat exchanger is used, the pipeline formed by inserting the first flanging into the through hole in series replaces the original pipeline, the refrigerant flows in the pipeline, and the heat exchanger with the structure cancels the pipeline, so that heat is directly transferred by the fins, and the heat transfer efficiency is greatly improved.

Description

Small-bore heat exchanger

Technical Field

The present invention relates to a heat exchanger.

Background

A heat exchanger (also called heat exchanger) is a device that transfers part of the heat of a hot fluid to a cold fluid. The heat exchanger plays an important role in chemical industry, petroleum industry, power industry, food industry and other industrial production, can be used as a heater, a cooler, a condenser, an evaporator, a reboiler and the like in chemical industry production, and is widely applied.

The original heat exchanger mainly comprises fins and pipelines, wherein through holes are formed in the fins, and the pipelines penetrate through the through holes in the fins. When the heat exchanger is used, refrigerant passes through the pipeline, the heat of the refrigerant is transferred to the fins through the pipeline, and then is transferred to air through the fins to realize heat exchange.

The heat exchanger with the structure has the problem that the heat transfer is not direct enough, and the heat in the refrigerant needs to be transferred to the pipeline firstly and then transferred to the fins through the pipeline, so that the heat dissipation effect is greatly reduced due to the two-time transfer. In addition, especially in the heat exchanger with small diameter, the fins are generally thin, so the contact area with the pipe is not large, which further results in the reduction of the heat dissipation performance, and therefore, it is necessary to improve.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides the small-caliber heat exchanger, which greatly improves the heat dissipation effect of the heat exchanger.

The technical scheme adopted by the invention for solving the technical problems is as follows: the small-caliber heat exchanger comprises a plurality of mutually parallel fins, through holes are formed in the fins, first turned edges are arranged at the through holes, the outer rings of the first turned edges are conical, the diameters of the first turned edges are gradually reduced, a circle of second turned edges are arranged at the end parts of the first turned edges, the second turned edges are turned outwards, the second turned edges and the first turned edges form a certain angle, and the first turned edges on the former fins are inserted into the through holes on the latter fins. When the heat exchanger is used, the pipeline formed by inserting the first flanging into the through hole in series replaces the original pipeline, the refrigerant flows in the pipeline, and the heat exchanger with the structure cancels the pipeline, so that heat is directly transferred by the fins, and the heat transfer efficiency is greatly improved. The second flanging is added, so that the connection of the fins is more tight, the first flanging is conical and can be easily separated from the through hole to cause leakage, and after the second flanging is added, the second flanging is hooked on the inner wall of the through hole like a barb, so that the first flanging is effectively prevented from being separated. In addition, the second flanging has increased the leakproofness also, and the second flanging has certain elasticity, and when inserting the through-hole, the second flanging is compressed the back, relies on elasticity to paste tight through-hole inner wall, prevents to appear leaking.

In the above technical scheme, preferably, the first flanging and the second flanging are formed by punching by a punch. Like this first turn-ups and second turn-ups all are integrative with the fin, can improve the radiating efficiency greatly.

In the above technical scheme, preferably, the outer ring of the first flanging is sleeved with a cushion, and the outer ring of the cushion is in contact with the inner ring of the second flanging. The cushion can greatly increase the elastic contact force between the second flanging and the inner wall of the through hole, and better sealing effect and anti-falling effect are achieved.

In the above technical solution, preferably, the taper of the cushion is the same as the taper of the second cuff.

In the above technical solution, preferably, the air conditioner further includes a housing, the fins are fixed in the housing, the housing is provided with an air inlet and an air outlet which are communicated with the inside of the housing, the housing is further provided with a fan, and the fan sucks air from the air inlet and blows the air out from the air outlet after passing through the fins. The fan is used for blowing the air which is subjected to heat exchange away by the fins, introducing fresh air which is not subjected to heat exchange, and continuously carrying out heat exchange with the refrigerant in the fins.

In the above technical scheme, preferably, the fins are vertically arranged, a water tank and a spray pipe are arranged above the fins, and the water tank is connected with the spray pipe through a valve. When dust accumulates to a certain extent between the fins, the heat dissipation effect of the fins can be greatly reduced, the valve is opened at this time, water in the water tank is sprayed into the channel between the fins through the spraying pipe, then the fan blows out the water from the channel, and when the water is blown out, dust in the channel is carried in the water drops, so that the washing of the fins is completed. Meanwhile, the water spraying can also rapidly reduce the temperature of the surface of the fin, so that the compressor can work normally.

In the above technical solution, preferably, the channel between the fins is arc-shaped, and a tangential direction of the air inlet of the channel is parallel to an air direction of the fan. The arc-shaped channel has the advantages that when the fan blows water to pass through the arc-shaped channel, centrifugal force can be generated, under the action of the centrifugal force, water flow is in close contact with the inner wall of the channel, and the inner wall of the channel can be kept clean.

The invention has the beneficial effects that: when the heat exchanger is used, the pipeline formed by inserting the first flanging into the through hole in series replaces the original pipeline, the refrigerant flows in the pipeline, and the heat exchanger with the structure cancels the pipeline, so that heat is directly transferred by the fins, and the heat transfer efficiency is greatly improved. The second flanging is added, so that the connection of the fins is more tight, the first flanging is conical and can be easily separated from the through hole to cause leakage, and after the second flanging is added, the second flanging is hooked on the inner wall of the through hole like a barb, so that the first flanging is effectively prevented from being separated. In addition, the second flanging has increased the leakproofness also, and the second flanging has certain elasticity, and when inserting the through-hole, the second flanging is compressed the back, relies on elasticity to paste tight through-hole inner wall, prevents to appear leaking.

Drawings

Fig. 1 is a schematic view of the present invention (with the housing front cover removed).

Fig. 2 is a cross-sectional view taken along a-a of fig. 1.

Fig. 3 is a schematic view of the combination between any two fins.

Detailed Description

The invention is described in further detail below with reference to the following figures and detailed description:

referring to fig. 1 to 3, the small-caliber heat exchanger comprises a plurality of mutually parallel fins 1 and a shell 2, a through hole 11 is formed in each fin 1, a first flanging 12 is arranged at the position of the through hole 11, the outer ring of the first flanging 12 is in a conical shape with the diameter gradually reduced, a circle of second flanging 13 is arranged at the end part of the first flanging 12, and the first flanging 12 and the second flanging 13 are formed by punching. Like this first turn-ups and second turn-ups all are integrative with the fin, can improve the radiating efficiency greatly.

The second flanging 13 is turned outwards, the second flanging 13 and the first flanging 12 form a certain angle, and the first flanging 12 on the former fin 1 is inserted into the through hole 11 on the latter fin 1. The outer ring of the first flanging 12 is sleeved with a cushion 2, and the taper of the cushion 2 is the same as that of the second flanging 13. The outer ring of the soft cushion 2 is contacted with the inner ring of the second flanging 13. The cushion can greatly increase the elastic contact force between the second flanging and the inner wall of the through hole, and better sealing effect and anti-falling effect are achieved.

When the heat exchanger is used, the pipeline formed by inserting the first flanging into the through hole in series replaces the original pipeline, the refrigerant flows in the pipeline, and the heat exchanger with the structure cancels the pipeline, so that heat is directly transferred by the fins, and the heat transfer efficiency is greatly improved. The second flanging is added, so that the connection of the fins is more tight, the first flanging is conical and can be easily separated from the through hole to cause leakage, and after the second flanging is added, the second flanging is hooked on the inner wall of the through hole like a barb, so that the first flanging is effectively prevented from being separated. In addition, the second flanging has increased the leakproofness also, and the second flanging has certain elasticity, and when inserting the through-hole, the second flanging is compressed the back, relies on elasticity to paste tight through-hole inner wall, prevents to appear leaking.

The fin 1 is fixed in the shell 3, an air inlet 31 and an air outlet 32 which are communicated with the inside of the shell 3 are arranged on the shell 3, a fan 4 is further arranged in the shell 3, and the fan 4 sucks air from the air inlet 31 and blows the air out from the air outlet 32 after passing through the fin 1. The fan is used for blowing the air which is subjected to heat exchange away by the fins, introducing fresh air which is not subjected to heat exchange, and continuously carrying out heat exchange with the refrigerant in the fins.

The fin 1 is vertically arranged, a water tank 5 and a spray pipe 6 are arranged above the fin 1, and the water tank 5 is connected with the spray pipe 6 through a valve 7. When dust accumulates to a certain extent between the fins, the heat dissipation effect of the fins can be greatly reduced, the valve is opened at this time, water in the water tank is sprayed into the channel between the fins through the spraying pipe, then the fan blows out the water from the channel, and when the water is blown out, dust in the channel is carried in the water drops, so that the washing of the fins is completed. Meanwhile, the water spraying can also rapidly reduce the temperature of the surface of the fin, so that the compressor can work normally.

The channels 1a between the fins 1 are arc-shaped, and the tangential direction of the air inlets of the channels 1a is parallel to the wind direction of the fan 4. The arc-shaped channel has the advantages that when the fan blows water to pass through the arc-shaped channel, centrifugal force can be generated, under the action of the centrifugal force, water flow is in close contact with the inner wall of the channel, and the inner wall of the channel can be kept clean.

Claims

1. Small-bore heat exchanger includes the mutual parallel fin of polylith, be provided with through-hole on the fin, its characterized in that: the fin is characterized in that a first flanging is arranged at the through hole, the outer ring of the first flanging is conical, the diameter of the outer ring of the first flanging is gradually reduced, a circle of second flanging is arranged at the end part of the first flanging, the second flanging is turned outwards, the second flanging and the first flanging form a certain angle, and the first flanging on the former fin is inserted into the through hole on the latter fin.

2. A small-bore heat exchanger as claimed in claim 1, wherein: the first flanging and the second flanging are formed by punching by a punch.

3. A small-bore heat exchanger as claimed in claim 1, wherein: the outer ring of the first flanging is sleeved with a soft pad, and the outer ring of the soft pad is in contact with the inner ring of the second flanging.

4. A small-bore heat exchanger as claimed in claim 3, wherein: the taper of the soft pad is the same as that of the second flanging.

5. A small-bore heat exchanger as claimed in claim 1, wherein: the fan is characterized by further comprising a shell, the fins are fixed in the shell, an air inlet and an air outlet which are communicated with the inside of the shell are formed in the shell, and a fan is further arranged in the shell and sucks air from the air inlet and blows out air from the air outlet after passing through the fins.

6. A small-bore heat exchanger as claimed in claim 5, wherein: the fin is vertically arranged, a water tank and a spraying pipe are arranged above the fin, and the water tank is connected with the spraying pipe through a valve.

7. The small-bore heat exchanger of claim 6, wherein: the channel between the fins is arc-shaped, and the tangential direction of the air inlet of the channel is parallel to the wind direction of the fan.