CN106152619A - Rectangle split-flow baffles formula parallel-flow evaporator - Google Patents

Abstract

A kind of rectangle split-flow baffles formula parallel-flow evaporator, including: rectangular split-flow baffles and include influent stream distribution pipe and go out the header of flow point pipe arrangement, wherein: split-flow baffles surface is provided with bar shaped link slot, the two ends of this link slot are distributed to manage and go out flow point pipe arrangement by porous flat pipe and influent stream respectively and are connected, compared with prior art, the present invention achieves the direct transfer from a upper flat tube to next flat tube for the cold-producing medium by rectangle split-flow baffles, avoid cold-producing medium distribution inequality, improve the heat exchange efficiency of evaporimeter.

Description

Rectangular divider type parallel flow evaporator

technical field

The invention relates to a technology in the field of heat exchangers, in particular to a parallel-flow evaporator of rectangular splitter plate type.

Background technique

The micro-channel rectangular divider baffle type parallel flow evaporator is composed of flat tubes, fins, etc., and has excellent heat transfer performance. However, the refrigerant inside the common rectangular divider baffle type parallel flow evaporator is a two-phase flow, and the two-phase flow is unstable, which easily causes uneven distribution of the refrigerant, resulting in a decrease in the performance of the entire evaporator.

Contents of the invention

The present invention aims at problems such as the uneven distribution of refrigerant caused by the header structure in the prior art, which leads to the decrease of the heat transfer performance of the evaporator, etc., and proposes a parallel flow evaporator with a rectangular splitter plate, which is realized by a rectangular splitter plate. The direct transfer of the refrigerant from the upper flat tube to the next flat tube is avoided, the uneven distribution of the refrigerant is avoided, and the heat exchange efficiency of the evaporator is improved.

The present invention is achieved through the following technical solutions:

The present invention includes: a rectangular splitter and a header including an inlet distribution pipe and an outlet distribution pipe, wherein: the surface of the splitter is provided with a strip-shaped connecting groove, and the two ends of the connecting groove respectively pass through the porous flat tube It is connected with the inlet distribution pipe and the outlet distribution pipe.

The connecting grooves are arranged in parallel with each other and at equal intervals along the length direction of the flow divider.

A fixed plate for sealing the connection groove is connected to the connecting surface of the splitter partition and the porous flat tube, and the porous flat tube passes through the fixed plate to connect with the splitter partition.

One end of the inlet distribution pipe and one end of the outlet distribution pipe are respectively connected with an inlet pipe and an outlet pipe.

Fins are arranged between the porous flat tubes.

The cross-sections of the inlet distribution pipe and the outlet distribution pipe are both rectangular.

Description of drawings

Fig. 1 is a schematic diagram of the overall structure of the present invention;

Fig. 2 is a schematic diagram of the structure of the collector;

Fig. 3 is a schematic diagram of the fixed plate structure;

Fig. 4 is a schematic diagram of the structure of the inlet distribution pipe;

Figure 5 is a schematic diagram of the structure of the splitter;

Figure 6 is a schematic diagram of the connection between the porous flat tube and the splitter;

Figure 7 is a schematic diagram of the installation structure of the fixed plate and the splitter partition;

In the figure: 1 inlet pipe; 2 outlet pipe; 3 collecting pipe; 4 porous flat pipe;

detailed description

The embodiments of the present invention are described in detail below. This embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following implementation example.

Example 1

As shown in Figure 1, this embodiment includes: a rectangular divider 5 and a header 3 composed of an inlet distribution pipe 301 and an outlet distribution pipe 302, wherein: the surface of the divider 5 is provided with a strip connection Groove 501, the two ends of the connecting groove 501 are respectively connected with the inlet distribution pipe 301 and the outlet distribution pipe 302 through the porous flat pipe 4.

As shown in FIG. 2 , the manifold 3 includes an inlet distribution pipe 301 and an outlet distribution pipe 302 . The cross sections of the inlet distribution pipe 301 and the outlet distribution pipe 302 are both rectangular, and a plurality of slots with the same cross section as the porous flat pipe 4 are opened on the upper surface thereof. The slots on the inlet distribution pipe 301 and the outlet distribution pipe 302 correspond one to one.

As shown in FIG. 3 , a fixing plate 6 for sealing the connecting groove 501 is provided on the connecting surface of the splitter baffle 5 and the porous flat tube 4 , and the porous flat tube 4 passes through the fixing plate 6 to connect with the splitter baffle 5 . Two rows of openings are evenly distributed in turn on the fixing plate 6 . The opening shape is the same as the cross-sectional shape of the porous flat tube 4 , and is sheathed outside the porous flat tube 4 .

As shown in FIG. 4 , the slots on the inflow distribution pipe 301 are evenly distributed sequentially. Similarly, the slots on the outflow distribution pipe 302 are also uniformly distributed sequentially. One end of the inlet distribution pipe 301 and one end of the outlet distribution pipe 302 are respectively connected with an inlet pipe 1 and an outlet pipe 2 .

As shown in FIG. 5 , the flow divider 5 is rectangular, and strip-shaped connecting grooves 501 are evenly distributed on its lower surface. The two ends of the connection groove 501 are respectively connected with the slots on the outflow distribution pipe 302 and the inflow distribution pipe 301 through the porous flat pipe 4 .

As shown in FIGS. 6-7 , the lower surface of the splitter partition 5 is attached to the fixing plate 6 to realize the sealing of the connecting groove 501 . The fixing plate 6 can also fix the porous flat tube 4 . Fins 7 for heat dissipation are arranged between the porous flat tubes 4 . The refrigerant flows from the inlet pipe 1 into the inflow distribution pipe 301, then flows through the porous flat pipe 4 to the distribution partition plate 5, then flows through the connecting groove 501 to another porous flat pipe 4, and finally flows into the outflow distribution pipe 302, completing cycle.

Compared with the prior art, the present invention realizes the direct transfer of the refrigerant from the upper flat tube to the next flat tube through the rectangular dividing plate, avoids the uneven distribution of the refrigerant, and improves the heat exchange efficiency of the evaporator.

Claims (6)

1. a rectangle split-flow baffles formula parallel-flow evaporator, it is characterised in that include: rectangular split-flow baffles and including Influent stream distribution pipe and the header going out flow point pipe arrangement, wherein: split-flow baffles surface is provided with bar shaped link slot, the two ends of this link slot Distribute to manage and go out flow point pipe arrangement by porous flat pipe and influent stream respectively and be connected.

2. rectangle split-flow baffles formula parallel-flow evaporator according to claim 1, is characterized in that, described link slot edge point The length direction of stream dividing plate is parallel to each other spaced set.

3. rectangle split-flow baffles formula parallel-flow evaporator according to claim 2, is characterized in that, described split-flow baffles Being connected with the fixed plate for being tightly connected groove with the face that is connected of porous flat pipe, porous flat pipe passes through fixed plate and split-flow baffles phase Even.

4. rectangle split-flow baffles formula parallel-flow evaporator according to claim 1, is characterized in that, described influent stream distribution pipe One end and go out one end of flow point pipe arrangement and be connected with inlet tube and outlet respectively.

5. rectangle split-flow baffles formula parallel-flow evaporator according to claim 1, is characterized in that, described porous flat pipe it Between be provided with fin.

6. rectangle split-flow baffles formula parallel-flow evaporator according to claim 1, is characterized in that, described influent stream distribution pipe It is all rectangle with the cross section going out flow point pipe arrangement.