CN214949932U

CN214949932U - Aluminum calandria evaporator with efficient heat exchange

Info

Publication number: CN214949932U
Application number: CN202120853284.4U
Authority: CN
Inventors: 李华宾
Original assignee: Guangzhou Daka Refrigeration Equipment Co ltd
Current assignee: Guangzhou Daka Refrigeration Equipment Co ltd
Priority date: 2021-04-23
Filing date: 2021-04-23
Publication date: 2021-11-30
Anticipated expiration: 2031-04-23

Abstract

The application discloses aluminum calandria evaporator of high-efficient heat transfer, it includes: many heat exchange tubes that set up side by side are provided with heat transfer fin on the outer wall of every heat exchange tube, are provided with the heat transfer insection on the inner wall. This application is through setting up the heat transfer insection on the inner wall at the heat exchange tube, set up heat transfer fin on the outer wall, when the refrigerant that is heated flows in the heat exchange tube, can contact with the heat transfer insection and carry out the conduction cold volume, the area of the contact of heat exchange tube inner wall with the refrigerant has been increased to the setting heat transfer insection, the conduction efficiency of cold volume has been improved, and simultaneously, the heat transfer insection still can disturb the refrigerant of intraductal flow, make the refrigerant can the intensive mixing, it is high to avoid refrigerant outside liquid temperature, central liquid temperature is low, but because the liquid of center department can't and pipe wall direct contact and unable conduction cold volume, lead to the heat transfer coefficient and the problem that heat exchange efficiency is low of evaporimeter.

Description

Aluminum calandria evaporator with efficient heat exchange

Technical Field

The utility model belongs to the technical field of the freezer is made, especially, relate to an aluminium calandria evaporimeter of high-efficient heat transfer.

Background

The aluminum calandria is mainly used in the refrigeration system of the cold storage with the temperature of 10 ℃ to 45 ℃ below zero, and is an evaporator used for various food freezing and cold storage. During operation, the refrigerant flows into the heat exchange tube, and is in contact with the tube wall to conduct cold quantity to the tube wall, then the cold quantity is conducted to the heat exchange fins through the tube wall to cool the heat exchange fins, and the heat exchange fins exchange heat with external air to refrigerate the air.

SUMMERY OF THE UTILITY MODEL

Objects of the invention

In order to overcome the defects, the utility model aims to provide an aluminum calandria evaporator with high heat exchange efficiency to solve the technical problem of low heat exchange efficiency of the existing aluminum calandria evaporator.

(II) technical scheme

In order to achieve the purpose, the technical scheme provided by the application is as follows:

an aluminum calandria evaporator with high heat exchange efficiency, comprising: the heat exchange device comprises a plurality of heat exchange tubes arranged side by side, wherein the outer wall of each heat exchange tube is provided with a heat exchange fin, the inner wall of each heat exchange tube is provided with a heat exchange insection, and the heat exchange insections are contacted with a refrigerant flowing into the heat exchange tubes and conduct the cold energy of the refrigerant to the heat exchange fins through the tube walls, so that the heat exchange fins are cooled and exchange heat with the ambient air;

the heat exchange fins are arranged on the outer wall of the heat exchange tube, when a refrigerant flows in the heat exchange tube, the refrigerant can be in contact with the heat exchange insections to conduct cold to the tube wall, and then the cold is conducted to the heat exchange fins through the tube wall, the temperature of the heat exchange fins is reduced to exchange heat with ambient air, and finally the effect of refrigerating air is achieved, the contact area between the inner wall of the heat exchange tube and the refrigerant is increased by the heat exchange insections, more cold can be conducted to the tube wall and the heat exchange fins in unit time of the refrigerant, the refrigerating effect is effectively improved, meanwhile, the heat exchange insections can disturb the refrigerant flowing in the tube, so that the refrigerant can be fully mixed in the flowing process, the situation that the external liquid of the refrigerant is continuously in contact with the tube wall and the temperature is increased, and the liquid at the center cannot be in direct contact with the tube wall is avoided, cold volume can't conduct to the heat transfer insection on, causes the poor problem of heat transfer effect, and the heat transfer insection carries out the disturbance to the refrigerant and makes it intensive mixing, can improve the heat transfer coefficient of evaporimeter, has strengthened heat exchange efficiency, reaches further improvement heat transfer effect.

In some embodiments, the heat exchange insection is arranged around the circumference of the inner wall of the heat exchange tube, the heat exchange insection is arranged in a circumferential surrounding mode, the contact area with the refrigerant is large, the refrigerant can be fully disturbed, and the heat exchange efficiency and the heat exchange coefficient are improved.

In some embodiments, the heat exchange insection encircles heat exchange tube inner wall semicircle setting, encircles the mode of heat exchange tube inner wall semicircle with the heat exchange insection, and heat exchange tube inner wall one side has the insection, can increase the cold volume conduction efficiency of heat transfer and increase heat transfer coefficient, and the opposite side is smooth, and the refrigeration oil can flow away along the smooth surface, avoids the refrigeration oil to remain on the heat exchange insection, causes the pipeline to block up, and the oil return is difficult.

In some embodiments, each insection unit of the heat exchange insection is of an arc-shaped structure, the insection unit of the arc-shaped structure has a large contact area with the refrigerant and can enhance the refrigerant disturbance due to the curved surface of the insection unit.

In some embodiments, each insection unit of the heat exchange insection is of a triangular structure, and because two inclined surfaces of the insection unit of the triangular structure are in contact with the refrigerant, the contact area of the heat exchange insection can be further increased, and the conduction efficiency of cold energy is further improved.

In some embodiments, each insection unit of the heat exchange insection is of a sheet structure, and the insection unit of the sheet structure can extend into the center of the refrigerant from outside to inside due to the large width of the insection unit, so that the insection unit and the refrigerant can exchange heat integrally.

In some embodiments, each heat exchange fin is correspondingly provided with a hoisting hole, a hoisting rod is inserted into each hoisting hole, the evaporator is suspended and installed through the hoisting rods, holes do not need to be punched in the wall, and installation convenience is improved.

Drawings

FIG. 1 is a front view of a high efficiency heat exchange aluminum calandria evaporator of the present invention;

FIG. 2 is an assembly view of two adjacent heat exchange tubes of the aluminum calandria evaporator with high heat exchange efficiency of the present invention;

FIG. 3 is a top view of the heat exchange tube of the present invention for efficient heat exchange;

FIG. 4 is a top view of a first embodiment of a heat exchange tube of the high efficiency heat exchange aluminum calandria evaporator of the present invention;

FIG. 5 is a top view of a second embodiment of a heat exchange tube of the high efficiency heat exchange aluminum calandria evaporator of the present invention;

fig. 6 is a top view of a third embodiment of the heat exchange tubes of the high efficiency heat exchange aluminum calandria evaporator of the present invention;

fig. 7 is a schematic structural diagram of the semi-circumference heat exchange insection of the aluminum calandria evaporator with high heat exchange efficiency of the present invention.

Reference numerals:

1. a heat exchange pipe; 101. heat exchange insections; 1011. a insection unit; 2. heat exchange fins; 3. hoisting the rod; 4. and (4) bending the pipe.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the description is intended to be illustrative only and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

Referring to fig. 1-3, the present invention provides an aluminum calandria evaporator with high heat exchange efficiency, which includes: the heat exchange device comprises a plurality of heat exchange tubes 1 arranged side by side, wherein the outer wall of each heat exchange tube 1 is provided with a heat exchange fin 2, the inner wall of each heat exchange tube 1 is provided with a heat exchange insection 101, the heat exchange insection 101 is in contact with a refrigerant flowing into the heat exchange tube 1 and transmits the cold energy of the refrigerant to the heat exchange fins 2 through tube walls, so that the heat exchange fins 2 are cooled and exchange heat with ambient air;

specifically, the temperature of refrigerant is lower, when flowing in heat exchange tube 1, can contact with heat transfer insection 101, then conduct cold volume to heat transfer insection 101, then heat transfer insection 101 conduct cold volume to the pipe wall on, the pipe wall conducts cold volume to heat transfer fin 2 at last, and gas in the air contacts microthermal heat transfer fin 2, carries out the heat exchange with heat transfer fin 2, finally becomes cold air.

This application is through setting up heat transfer insection 101 on the inner wall of heat exchange tube, during the refrigeration, the refrigerant can contact with heat transfer insection 101, conducts cold volume to the pipe wall, then conducts cold volume to heat transfer fin 2 through the pipe wall, sets up heat transfer insection 101 and has increased the area of contact of heat exchange tube inner wall with the refrigerant, can effectively improve refrigeration effect with more cold volume conduction to pipe wall and heat transfer fin 2 in the refrigerant unit interval.

It is specific, set up heat transfer insection 101 not only can improve heat transfer area, still can carry out the disturbance to the refrigerant that flows in the pipeline, stir the refrigerant in other words, avoid because the outside liquid of refrigerant lasts with the pipe wall contact, the temperature rises after cold volume conduction, and the liquid of center department is because unable and pipe wall direct contact, and can't effectively conduct cold volume to heat transfer insection 101, cause the poor problem of heat transfer effect, heat transfer insection 101 disturbs the refrigerant, make the liquid of center department and outside liquid point liquid intensive mixing even, thus, the liquid of center department also can contact with heat transfer insection 101, carry out cold volume conduction, heat transfer insection 101 disturbance can improve the heat transfer coefficient of evaporimeter, the validity of cold volume conduction has been strengthened, further reach high-efficient heat transfer all effects.

Specifically, the heat exchange insection 101 is formed by combining a plurality of insection units 1011.

Referring to fig. 4, in the first embodiment, each corrugation unit 1011 is an arc-shaped structure, a plurality of the arc-shaped structure corrugation units 1011 form a wave-shaped structure, and the arc-shaped structure corrugation units 1011 have a large contact area with the refrigerant and a large disturbance to the refrigerant.

Referring to fig. 5, in the second embodiment, each insection unit 1011 of the heat exchange insection 101 is of a triangular structure, and the insection unit 1011 of the triangular structure contacts with the refrigerant due to two inclined surfaces thereof, so that the heat exchange area of the heat exchange insection 101 can be further increased, and the cold conduction efficiency can be further improved.

Referring to fig. 6, in the third embodiment, each insection unit 1011 is a sheet-shaped structure, and the insection unit 1011 of the sheet-shaped structure can be inserted into the center of the refrigerant from outside to inside due to its large width, and fully contacts with the refrigerant, thereby fully exchanging heat with the refrigerant.

Preferably, a disturbance groove may be provided on each serration unit 1011 to further increase the disturbance of the refrigerant.

Specifically, some systems should not be provided with excessive heat exchange insections 101, such as: barrel pump supplies liquid flooded system, if set up more heat transfer insection 101 in the heat exchange tube 1, the refrigeration oil is gathered easily on heat transfer insection 101, lead to heat exchange tube 1 to block up, the oil return difficulty, it is preferred, please refer to fig. 6, this application sets heat transfer insection 101 to half circumference structure, the first semi-circle of heat exchange tube 1 is the insection structure, lower semi-circle is smooth circular arc structure, the refrigeration oil can flow backward along the smooth surface at the refrigerant flow in-process, can avoid the pipe blockage problem.

Referring to fig. 2, specifically, an elbow 4 with a U-shaped structure is disposed between two adjacent heat exchange tubes 1, and the two adjacent heat exchange tubes 1 are connected by the elbow 4.

Specifically, each heat exchange fin 2 is correspondingly provided with a hoisting hole, a hoisting rod 3 is inserted into each hoisting hole, and during installation, the hoisting rods 3 are fixed through ropes or chains to hoist the heat exchanger. Preferably, the hoisting rod 3 adopts a screw rod and nut arrangement mode, the screw rod is inserted into the hoisting hole, and the two heat exchange sheets on the outermost side are locked through the nuts. Thus, the number of the heat exchange fins 2 and the number of the heat exchange tubes 1 can be increased or decreased appropriately to adapt to the freezers with different volume sizes.

It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.

Claims

1. An aluminum calandria evaporator of high efficiency heat exchange, comprising: the heat exchange tube comprises a plurality of heat exchange tubes (1) arranged side by side, wherein each heat exchange tube (1) is provided with a heat exchange fin (2) on the outer wall, and a heat exchange insection (101) is arranged on the inner wall, the heat exchange insection (101) is in contact with a refrigerant flowing into the heat exchange tube (1) and conducts the cold energy of the refrigerant to the heat exchange fins (2) through the tube wall, so that the heat exchange fins (2) are cooled and exchange heat with ambient air.

2. The aluminum heat exchanger tube bank evaporator of claim 1, wherein the heat exchange insections (101) are circumferentially arranged around the inner wall of the heat exchange tube (1).

3. The aluminum heat exchange calandria evaporator with high efficiency as recited in claim 1, wherein said heat exchange insection (101) is disposed around half of the circumference of the inner wall of the heat exchange tube (1).

4. The aluminum heat exchange calandria evaporator as recited in any one of claims 1 to 3, wherein each of the corrugation units (1011) of the heat exchange corrugation (101) is of an arc-shaped configuration.

5. The aluminum heat exchange calandria evaporator as recited in any one of claims 1 to 3, wherein each of the corrugation units (1011) of the heat exchange corrugation (101) is of triangular configuration.

6. The aluminum heat exchanger calandria evaporator as recited in any of claims 1 to 3, wherein each of the corrugation units (1011) of the heat exchange corrugation (101) is a plate-like structure.

7. The aluminum calandria evaporator with high efficiency heat exchange according to any one of claims 1 to 3, wherein each heat exchange fin (2) is correspondingly provided with a hoisting hole, and a hoisting rod (3) is inserted into the hoisting hole.