WO2009036608A1

WO2009036608A1 - A spiral type evaporator

Info

Publication number: WO2009036608A1
Application number: PCT/CN2007/002798
Authority: WO
Inventors: Sai Kwai Lav
Original assignee: Sai Kwai Lav
Priority date: 2007-09-21
Filing date: 2007-09-21
Publication date: 2009-03-26

Abstract

A spiral type evaporator comprises a barrel (1), some heat exchange tube bundles (2) and a spiral type guide plate member (5). The guide plate member is provided in the barrel (1) axially and comprises a center column (5.1) and a spiral guide plate (5.2). The spiral guide plate (5.2) is wrapped around the center column (5.1) to make an overall structure. Some holes (5.3) are provided on the guide plate (5.2) and the heat exchange tube bundles (2) are penetrated through the holes (5.3) axially. The arrangement of the holes (5.3) in the guide plate (5.2) is quincunx or triangle.

Description

Spiral evaporator

Technical field

The present invention relates to a heat exchanger for central air conditioning and refrigeration, and in particular to a spiral evaporator. It belongs to the technical field of heat exchange equipment. Background technique

The well-known central air-conditioning shell-and-tube evaporator structure is as shown in Fig. 4-6, which is composed of a heat exchange tube bundle, a tube plate, a pipe box, a deflector and a cylinder. The refrigerant circulates in the heat exchange tubes, and the brine circulates outside the heat exchange tubes. At present, the general evaporators on the market adopt the up-and-down baffle type, the fluid flows up and down, the fluid resistance is large; the pressure drop is large, the pressure drop is 60kpa; the fluid flow is uneven and some dead angles; the fluid flow path distance is short , 3. 5m per meter. These reasons are the key to the fact that the amount of heat exchange is not optimal. In addition, the holes on each baffle are arranged in a square shape, which are mechanically assembled and assembled, and the processing is complicated. Summary of the invention

SUMMARY OF THE INVENTION The object of the present invention is to overcome the above-mentioned deficiencies and to provide a spiral evaporator which can achieve an optimum heat exchange rate.

The object of the present invention is achieved as follows: A spiral evaporator comprising: a cylinder, a heat exchange tube bundle and a spiral baffle core.

The spiral baffle core is axially disposed in the cylinder body, and includes a round core column and a baffle. The baffle is spirally wound around the round core column to form a whole body, and the pipe plate is arranged with a pipe hole.

The heat exchange tube bundle is axially inserted into the tube hole of the baffle.

In the spiral evaporator of the present invention, the deflector of the tube bundle is arranged in a plum blossom shape or a triangle shape.

The utility model adopts a spiral baffle core, so that the fluid flows spirally around the round core column, lengthening the flow path of the fluid by 30%, and the heat taken away by the path lengthening is relatively increased by 20%; The baffle changes to a spiral type and the corresponding pressure is reduced, resulting in a resistance of 50 kPa. This reduces total production costs by 20%. In addition, the arrangement of the plum-like or triangular-shaped tube holes on the deflector makes the space arrangement more reasonable. 07 002798 BRIEF DESCRIPTION OF THE DRAWINGS

Figure 1 is a schematic view showing the structure of the front side of the spiral evaporator of the present invention. Fig. 2 is a schematic view showing the structure of a spiral baffle core of the spiral evaporator of the present invention.

Figure 3 is a schematic view of the arrangement of the tube holes of the present invention.

Figure 4 is a schematic view showing the structure of the front side of the evaporator.

Fig. 5 is a schematic view showing the arrangement of the tube holes of the conventional evaporator.

Fig. 6 is a schematic view showing the arrangement of the tube holes of the conventional evaporator.

In the figure: cylinder 1, heat exchange tube bundle 2, tube plate 3, tube box 4, spiral deflector core 5, deflector 6.

detailed description

Example 1

Referring to Fig. 1, the spiral evaporator of the utility model is mainly composed of a cylinder 1, a heat exchange tube bundle 2, a tube plate 3, a pipe box 4 and a spiral baffle core 5.

The spiral baffle core 5 is axially disposed in the barrel 1, and the heat exchange tube bundle 2 is axially inserted into the tube hole of the spiral baffle core 5, and the tube plate 3 is disposed in the heat exchange tube bundle 2 The left and right ends of the tube box 4 are disposed outside the tube sheet 3.

Referring to Fig. 2, the spiral baffle core 5 is composed of a cylindrical post 5.1 and a baffle 5.2. The baffle 5. 2 is spirally wound around the round core column 5. The whole is formed on the outer core 5. The flow guide plate 5. 2 is provided with a pipe hole 5. 3.

Referring to Figure 3, the tube holes 5. 3 are arranged in a plum-like or triangular shape on the baffle 5. 2 (not shown).

Claims

Claim

A spiral type evaporator characterized by comprising: a cylinder 1, a heat exchange tube bundle 2, and a spiral type guide plate core 5.

2, The spiral deflector 5. The spiral deflector 5. The spiral deflector 5. The spiral deflector 5. The spiral deflector 5. The spiral deflector 5. The spiral deflector 5. The spiral deflector 5. 1; a tube hole 5. 3;

The heat exchange tube bundle 2 is axially inserted into the tube hole 5. 3 on the baffle 5.

2. A spiral evaporator according to claim 1, characterized in that the tube holes 5.3 are arranged in a plum-like or triangular shape on the baffle 5.