CN212431897U

CN212431897U - Microchannel collecting pipe

Info

Publication number: CN212431897U
Application number: CN201921497958.0U
Authority: CN
Inventors: 赵永峰; 薛炎
Original assignee: Jiangsu Keling Precision Technology Co ltd
Current assignee: Jiangsu Keling Precision Technology Co ltd
Priority date: 2019-09-10
Filing date: 2019-09-10
Publication date: 2021-01-29
Anticipated expiration: 2029-09-10

Abstract

The utility model relates to the technical field of micro-channel heat exchangers, in particular to a micro-channel collecting pipe, which comprises a core body part, a communication part, a side part and a connecting pipe; the flat tube connector is used for butt joint of the flat tubes, the channel is communicated with a communicating part arranged on one side of the core body, the connecting tube is connected with the communicating part, and the side part is arranged on the other side of the core body. After adopting above-mentioned structure and method, the utility model discloses for conventional pressure manifold, inside volume has been little, has further reduced the injection volume of refrigerant, about 20%, is favorable to the safety of environmental protection and system. The design is convenient for the distribution of the refrigerant, and the heat exchange coefficient is further improved.

Description

Microchannel collecting pipe

Technical Field

The utility model relates to a microchannel heat exchanger technical field, especially a microchannel collector.

Background

The micro-channel heat exchanger adopts flat tubes, the hydraulic diameter of an internal channel is small, the boundary layer is small, the heat transfer coefficient in the tubes is high, the air advancing direction speed is uniform, the heat exchange coefficient of air on the fin side is high, and the welding mode is adopted without thermal resistance of expansion joint; due to the characteristics, the micro-channel heat exchanger is often used in occasions of improving energy efficiency, reducing weight, having a compact structure and reducing the filling amount of refrigerant, and is the development direction of the air side heat exchanger. The existing micro-channel heat exchanger comprises a collecting pipe, an inlet pipe, an outlet pipe and fins, wherein the collecting pipe is in a circular pipe shape, the diameter of the collecting pipe is 3-5 mm larger than the width of a flat pipe, the inner volume of the collecting pipe is large, in addition, the collecting pipe is separated by the inserted flat pipe by about half of circulation space, the flowing resistance of a refrigerant is increased, and the effective channel of the collecting pipe is reduced. By adopting the double-row micro-channel heat exchanger, four collecting pipes are needed, the cost is high, and the refrigerant charging amount is large.

Chinese utility model patent CN 208505067U discloses a convection double-system microchannel heat exchanger, which comprises four collecting pipes and a plurality of flat pipe groups; every flat tub of group all include a second flat pipe and two and laminate respectively the first flat pipe on the outer surface about the flat pipe of second, the both ends of first flat pipe communicate with pressure manifold three and pressure manifold four respectively, the one end of the flat pipe of second runs through pressure manifold three and communicates with flow manifold one, the flat tub of other end of second runs through pressure manifold four and communicates with pressure manifold two.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a little and intraductal little flow resistance's of interior volume microchannel header.

In order to solve the technical problem, the utility model discloses a micro-channel header, which comprises a core body part, a communication part, a side part and a connecting pipe; the flat tube connector is used for butt joint of the flat tubes, the channel is communicated with a communicating part arranged on one side of the core body, the connecting tube is connected with the communicating part, and the side part is arranged on the other side of the core body.

Preferably, a partition plate for dividing a flow path is arranged in the middle of the communicating part.

Preferably, the cross-sectional area of the channel is 1.5-3.5 times of that of the flat pipe connector.

Preferably, the cross-sectional area of the channel is 2 times of that of the flat pipe joint.

Preferably, the channel is circular or rectangular in cross-section.

Preferably, the cross-section of the channel is rectangular.

After adopting above-mentioned structure and method, the utility model discloses for conventional pressure manifold, inside volume has been little, has further reduced the injection volume of refrigerant, about 20%, is favorable to the safety of environmental protection and system. The design is convenient for the distribution of the refrigerant, and the heat exchange coefficient is further improved.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Fig. 1 is a schematic structural view of a microchannel header of the present invention.

Fig. 2 is a side view of the core body of the present invention.

Fig. 3 is a schematic structural view of the communication portion of the present invention.

Fig. 4 is a schematic view of the novel mandrel body processing profile of the present invention.

Fig. 5 is a schematic structural view of the microchannel heat collector of the present invention.

In the figure: 1 is core portion, 2 is the intercommunication portion, 3 is the lateral part, 4 is the takeover, 5 is the microchannel, 6 is the fin, 7 is the flat pipe, 8 is the pressure manifold, 11 is flat pipe connector, 12 is the passageway.

Detailed Description

As shown in fig. 1 and 2, the present invention comprises a core body 1, a communication part 2, a side part 3 and a connection pipe 4; the flat tube type heat exchanger is characterized in that a flat tube connector 11 and a channel 12 are arranged on the core body 1, the flat tube connector 11 is used for being butted with a flat tube, the channel 12 is communicated with a communication part 2 arranged on one side of the core body 1, a connecting tube 4 is connected with the communication part 2, and a side part 3 is arranged on the other side of the core body 1.

As shown in fig. 4, the core part 1 is formed by processing a profile 1A, a flat tube interface 11 is punched on the side surface of the profile 1A, and the profile 1A is an extrusion and comprises a channel 12. The communicating part 2 is welded on one side of the core body part 1, the upper end and the lower end of the communicating part 2 are welded with end covers, the side part 3 is welded on the other side of the core body part 1, and the welding adopts a brazing mode. The cross-sectional area of the channel 12 is 1.5 to 3.5 times, preferably 2.5 times in the present embodiment, the area of the flat tube connector 11. The cross-section of the channel 12 in this embodiment is circular, but may be rectangular, and if the cross-section is rectangular, a rectangular shape is preferred.

As shown in fig. 1 and 3, the communicating portion 2 includes an arc plate, and the arc plate is welded to form a communicating channel with a semicircular cross section. For flow dividing, the upper and lower communicating parts 2 are separated, and the second communicating part 2 is provided with a partition plate 21.

As shown in fig. 5 as adopting the utility model discloses heat exchanger of microchannel header, including pressure manifold 8, pressure manifold 8 is provided with microchannel 5, microchannel 5 stretches into in pressure manifold 4, microchannel 5 sets up in flat pipe 7, the flat pipe 7 outside is fixed with fin 6.

Of course, the adapter 4 of the present patent application may be plural, and such variations are within the scope of the present patent application.

Although specific embodiments of the present invention have been described above, it will be appreciated by those skilled in the art that these are merely examples and that many changes and modifications may be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims.

Claims

1. A microchannel header, comprising: comprises a core part (1), a communication part (2), a side part (3) and a connecting pipe (4); be provided with flat pipe connector (11) and passageway (12) on core portion (1), flat pipe connector (11) are used for the butt joint flat pipe, passageway (12) and setting up UNICOM portion (2) UNICOM in core portion one side, and takeover (4) are connected with UNICOM portion (2), and lateral part (3) set up in core portion opposite side.

2. A microchannel header as set forth in claim 1 wherein: a partition plate (21) used for dividing the flow is arranged in the middle of the communicating part (2).

3. A microchannel header as set forth in claim 1 wherein: the cross-sectional area of the channel (12) is 1.5-3.5 times of that of the flat pipe connector (11).

4. A microchannel header as set forth in claim 1 wherein: the cross-sectional area of the channel (12) is 2 times of that of the flat pipe connector (11).

5. A microchannel header as set forth in claim 1 wherein: the cross section of the channel (12) is circular or rectangular.

6. A microchannel header as set forth in claim 1 wherein: the cross section of the channel (12) is rectangular.