CN210602356U

CN210602356U - Current divider, micro-channel heat exchanger and heat pump air conditioner

Info

Publication number: CN210602356U
Application number: CN201921214690.5U
Authority: CN
Inventors: 李晓光; 姜思航; 罗敏; 李先庭; 袁振红; 李社红
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-07-30
Filing date: 2019-07-30
Publication date: 2020-05-22
Anticipated expiration: 2029-07-30

Abstract

The utility model discloses a current divider, microchannel heat exchanger and heat pump air conditioner, current divider set up with one or more branch pipes intercommunication be used for refrigerant current divider a plurality of flow holes, the refrigerant flows out or flows in through flow holes, adopt to the branch pipe, the quantity of flow holes and the different settings of hydraulic diameter size, the refrigerant flow through flow holes is adjusted and controlled, realize the accurate control of current divider refrigerant distribution; by using the microchannel heat exchanger of the flow divider of the utility model, the refrigerant is divided and conveyed by a plurality of branch pipes with smaller water conservancy diameter, thus not only improving the pressure resistance of the microchannel heat exchanger with low cost, but also further reducing the refrigerant filling amount of the microchannel heat exchanger, and being energy-saving and environment-friendly; use the utility model discloses heat pump air conditioner of current divider is with low costs, efficient.

Description

Current divider, micro-channel heat exchanger and heat pump air conditioner

Technical Field

The utility model relates to a heat transfer technical field, in particular to branch and collect flow ware, microchannel heat exchanger and heat pump air conditioner.

Background

Microchannel heat exchanger refrigerant heat transfer runner hydraulic diameter is little, and heat exchange efficiency is high, and the current divider is used for circulating refrigerant's reposition of redundant personnel and collects, because prior art's current divider structural design is not enough, the evaporimeter or the condenser that many parallel flow flat tubes become, all the not uniform problem of refrigerant distribution that exists of different degrees, influences heat exchange efficiency's further promotion, leads to the microchannel evaporimeter to receive the restriction at a lot of application occasions even.

SUMMERY OF THE UTILITY MODEL

The utility model aims at disclosing a current divider, microchannel heat exchanger and heat pump air conditioner, solving the inhomogeneous problem of microchannel heat exchanger refrigerant distribution.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model discloses a current divider, include and set up along lengthwise direction this internal one or many branch pipes of current divider, every be provided with one or more flow equalizing hole on the pipe wall of branch pipe.

Furthermore, the longitudinal section shape of the branch pipe is one of a straight line, a curve or a broken line, the cross section shape of the branch pipe is one or a combination of a plurality of circular holes, rectangular holes, triangular holes and irregular special-shaped holes, and the hole pattern of the flow equalizing hole is one or a combination of a plurality of circular holes, rectangular holes, triangular holes and irregular special-shaped holes.

Preferably, the flow divider further comprises at least one trunk pipe arranged at an end or a middle position of the flow divider, and each trunk pipe is communicated with at least one branch pipe.

Preferably, the hydraulic diameter of the branch pipe gradually decreases along the length direction of the branch pipe from the communication position of the branch pipe and the main pipe, a plurality of flow equalizing holes located on the wall of each branch pipe are distributed along the length direction of the branch pipe, and the hydraulic diameter of each flow equalizing hole gradually increases or decreases along the length direction of the branch pipe from the communication position of the branch pipe and the main pipe.

Furthermore, still include a plurality of sets up in equal liquid chamber on the current collector outer wall, every equal liquid chamber through corresponding equal discharge orifice with at least one the branch pipe intercommunication.

Further, still including set up in the liquid cavity with flow equalizing channel between the flow equalizing hole, every the liquid cavity through the corresponding flow equalizing channel with at least one flow equalizing hole intercommunication.

Further, still include a plurality of set up in heat exchange tube jack on the equal liquid chamber, every the heat exchange tube jack with correspond equal liquid chamber intercommunication.

The utility model also discloses a microchannel heat exchanger, including the current divider in above-mentioned each embodiment.

Furthermore, the microchannel heat exchanger also comprises a microchannel flat tube and a heat exchange fin, the microchannel flat tube is inserted into the heat exchange tube jack and is hermetically welded, and the heat exchange fin is welded or expanded on the heat exchange surface of the microchannel flat tube.

The utility model also discloses a heat pump air conditioner, including the current divider in above-mentioned each embodiment.

Based on the technical scheme, the utility model has the advantages of as follows: because the flow divider of the utility model is provided with a plurality of flow equalizing holes which are communicated with one or a plurality of branch pipes and are used for refrigerant flow dividing and collecting, the refrigerant flows out or flows in through the flow equalizing holes, the refrigerant flow passing through the flow equalizing holes is adjusted and controlled by adopting different settings of the number of the branch pipes and the flow equalizing holes and the size of the hydraulic diameter, and the accurate control of the refrigerant distribution of the flow divider is realized; by using the microchannel heat exchanger of the flow divider of the utility model, the refrigerant is divided and conveyed by the plurality of branch pipes with smaller water conservancy diameter, thus the pressure resistance of the microchannel heat exchanger can be improved with low cost, the microchannel heat exchanger is suitable for refrigerant circulation with higher pressure, the refrigerant filling amount of the microchannel heat exchanger is further reduced, and the microchannel heat exchanger is energy-saving and environment-friendly; use the utility model discloses heat pump air conditioner of current divider is with low costs, efficient, simple structure is reliable, and the range of application is wide.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without undue limitation to the invention.

Fig. 1 is a schematic structural view of an embodiment 1 of a current divider disclosed in the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1;

FIG. 3 is a schematic longitudinal cross-sectional view of FIG. 1;

fig. 4 is a schematic structural view of an embodiment 2 of the current divider disclosed in the present invention;

FIG. 5 is an exploded view of a portion of FIG. 4;

fig. 6 is a schematic structural view of an embodiment 3 of the current divider disclosed in the present invention;

FIG. 7 is an exploded view of a portion of FIG. 6;

fig. 8 is a schematic structural diagram of an embodiment of a microchannel heat exchanger disclosed in the present invention.

In the drawings: 1. a diversity current device; 1a, an upper half part of the diversity current device; 1b, the lower half part of the diversity current device; 10. a main pipe; 101. a first main pipe; 102. a second main pipe; 11. a branch pipe; 111. A first branch pipe; 112. a second branch pipe; 113. a third branch pipe; 12. a flow equalizing hole; 121. a first flow equalizing hole; 122. a second flow equalizing hole; 123. a third flow equalizing hole; 13. a liquid homogenizing chamber; 14. a heat exchange tube jack; 15. a flow equalization channel; 2. Micro-channel flat tubes; 3. and heat exchange fins.

Detailed Description

In order to make the purpose, technical solution and advantages of the present invention clearer, the following drawings in the embodiments of the present invention are combined to perform more detailed description on the technical solution in the embodiments of the present invention.

The utility model provides an embodiment 1 of a current divider, as shown in attached figures 1, 2 and 3, a branch pipe (11) arranged in parallel in the current divider (1) body comprises a first branch pipe (111), a second branch pipe (112) and a third branch pipe (113), a plurality of uniform flow holes (121) are arranged on the pipe wall of the first branch pipe (111), a plurality of uniform flow holes (122) are arranged on the pipe wall of the second branch pipe (112), a plurality of uniform flow holes (123) are arranged on the pipe wall of the third branch pipe (113), a plurality of uniform liquid cavities (13) are arranged on the outer wall of the current divider (1), each uniform liquid cavity (13) is respectively communicated with the first branch pipe (111), the second branch pipe (112) and the third branch pipe (113) through a group of a plurality of first uniform flow holes (121), second uniform flow holes (122) and third uniform flow holes (123) arranged in the uniform liquid cavity, a heat exchange tube jack (14) is arranged on the uniform liquid cavity (13), each heat exchange tube jack (14) is communicated with the corresponding liquid equalizing cavity (13) below the heat exchange tube jack.

When the current divider (1) in this embodiment 1 is used for refrigerant shunting, the refrigerant is shunted through the first branch pipe (111), the second branch pipe (112), the third branch pipe (113), respectively through corresponding first flow equalizing hole (121), the second flow equalizing hole (122), the third flow equalizing hole (123) converges in different flow equalizing chamber (13), set up the difference of the number and hydraulic diameter of the first flow equalizing hole (121), the second flow equalizing hole (122), the third flow equalizing hole (123), can control the refrigerant flow that converges in every flow equalizing chamber (13), thereby realize the uniform distribution of the refrigerant that flows in different heat exchange tube jacks (14).

The embodiment 2 of the current divider provided by the utility model is shown in the attached figures 4 and 5, the current divider (1) is arc-shaped and comprises an upper half part (1 a) of the current divider and a lower half part (1 b) of the current divider; the upper half part (1 a) of the current divider is provided with a first main pipe (101) and a second main pipe (102), the lower half part (1 b) of the current divider is provided with a first branch pipe (111) and a second branch pipe (112), and the upper half part (1 a) of the current divider and the lower half part (1 b) of the current divider are welded into a whole in a sealing way; the pipe wall of the first branch pipe (111) is provided with a plurality of uniform flow holes (121), the pipe wall of the second branch pipe (112) is provided with a plurality of uniform flow holes (122), a plurality of uniform liquid cavities (13) are arranged on the outer wall of the lower half part (1 b) of the current divider, and a plurality of heat exchange pipe jacks (14) are respectively and correspondingly arranged on the uniform liquid cavities (13); from the communication position of the first branch pipe (111) and the first main pipe (101) to the end of the first branch pipe (111), the hydraulic diameter of the first branch pipe (111) is gradually reduced, and from the communication position of the second branch pipe (112) and the second main pipe (102) to the end of the second branch pipe (112), the hydraulic diameter of the second branch pipe (112) is gradually reduced; one part of the liquid equalizing cavity (13) is communicated with the first branch pipe (111) through a first liquid equalizing hole (121) arranged in the part of the liquid equalizing cavity, the first branch pipe (111) is communicated with the first main pipe (101), the other part of the liquid equalizing cavity (13) is communicated with the two second branch pipes (112) through two second liquid equalizing holes (122) arranged in the part of the liquid equalizing cavity, the two second branch pipes (112) are communicated with the second main pipe (102) after confluence, and each heat exchange pipe jack (14) is communicated with the corresponding liquid equalizing cavity (13) below the heat exchange pipe jack.

When the flow divider (1) in this embodiment 2 is used for refrigerant flow division and collection, firstly, after a refrigerant flows into the first branch pipe (111) through the first trunk pipe (101), the refrigerant is divided into a corresponding part of liquid equalizing cavities (13) through the first liquid equalizing holes (121) and flows out through a corresponding part of heat exchange pipe jacks (14) for heat exchange; then, after the heat-exchanged refrigerant flows into the other corresponding part of liquid-equalizing cavity (13) through the other part of heat exchange tube insertion holes (14), the refrigerant enters the two second branch tubes (112) through second liquid-equalizing holes (122) arranged in the part of liquid-equalizing cavity (13), and then the refrigerant is converged to the second main tube (102); the number and hydraulic diameter of the first flow equalizing holes (121) and the second flow equalizing holes (122) in the liquid equalizing cavity (13) are different, so that the flow of the refrigerant passing through the liquid equalizing cavity (13) can be controlled, and the refrigerant flowing into or out of the liquid equalizing cavity is uniformly distributed in different heat exchange tube jacks (14); the arc-shaped current divider (1) can meet the design requirements of special shapes such as wall-mounted air-conditioning indoor heat exchangers and the like.

The utility model provides a current divider embodiment 3 as shown in fig. 6 and 7, current divider includes current divider upper half (1 a), current divider lower half (1 b), current divider upper half (1 a) and current divider lower half (1 b) seal welding are as an organic whole; the upper half part (1 a) of the flow divider is provided with a main pipe (10), a first branch pipe (111) and a second branch pipe (112), the first branch pipe (111) and the second branch pipe (112) are connected in parallel and then communicated with the main pipe (10), and the pipe walls of the first branch pipe (111) and the second branch pipe (112) are respectively provided with a plurality of flow equalizing holes (12); a plurality of equal liquid chamber (13) set up on current collector lower half (1 b) outer wall, and a plurality of heat exchange tube jack (14) correspond respectively and set up on equal liquid chamber (13), and a plurality of flow equalizing channel (15) set up on current collector lower half (1 b) inner wall, and flow equalizing channel (15) correspond and communicate with different equal liquid chamber (13), the hole (12) position that flow equalizes respectively.

When the flow divider (1) in this embodiment 3 is used for refrigerant flow division, a refrigerant is firstly divided into a first branch pipe (111) and a second branch pipe (112) through a main pipe (10), and after flowing into flow equalizing channels (15) correspondingly communicated through different flow equalizing holes (12), the refrigerant is uniformly distributed into different liquid equalizing cavities (13) correspondingly communicated, and then flows out through different heat exchange pipe jacks (14) to realize uniform heat exchange; the setting corresponds the difference of the water conservancy diameter of flow equalizing channel (15), the hole (12) that flow equalizes, first branch pipe (111), second branch pipe (112) of intercommunication with every equal liquid chamber (13), can the accurate control refrigerant at different equal liquid chamber (13) distribution flow, realizes the even unanimity that a plurality of heat exchange tube jack (14) refrigerants flow.

The utility model provides a pair of microchannel heat exchanger embodiment is shown in figure 8, including two current divider (1) of aforementioned embodiment, a plurality of microchannel flat tube (2), a plurality of heat transfer fin (3), be equipped with first main pipe (101), second main pipe (102) on two current divider (1) respectively, microchannel flat tube (2) insert in heat exchange tube jack (14) of current divider (1) and seal welding, heat transfer fin (3) welding is on microchannel flat tube (2).

The micro-channel heat exchanger in the embodiment adopts the current divider of the previous embodiment, accurately controls and uniformly distributes the flow of a refrigerant flowing into the second main pipe (102) through the first main pipe (101) and flowing out and exchanging heat through the plurality of micro-channel flat pipes (2) in the middle, and can realize the efficient heat exchange between the plurality of micro-channel flat pipes (2) and external airflow through the heat exchange fins (3); as the refrigerant is distributed and conveyed by a plurality of branch pipes in the flow divider (1), the branch pipes have smaller water conservancy diameters, the pressure resistance of the microchannel heat exchanger can be improved with low cost, the micro-channel heat exchanger is suitable for refrigerant circulation with higher pressure, the refrigerant filling amount of the microchannel heat exchanger is further reduced, and the micro-channel heat exchanger is energy-saving and environment-friendly.

The utility model also provides a heat pump air conditioner, its current divider that includes in above-mentioned each embodiment, other parts of heat pump air conditioner are prior art, no longer give consideration to here.

The embodiments described above are some, but not all embodiments of the present invention, and are intended to be used for explaining the present invention, and should not be construed as limiting the present invention; the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout; the terms "central," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like in this description refer to orientations and positional relationships illustrated in the drawings, and are used for convenience in describing the invention and to simplify the description, but do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the scope of the invention.

Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Claims

1. A current divider/collector, comprising: the flow divider comprises one or more branch pipes arranged in the flow divider body along the longitudinal direction, wherein one or more flow equalizing holes are formed in the pipe wall of each branch pipe.

2. The current diversity recited in claim 1 wherein: the longitudinal section of the branch pipe is in the shape of a straight line, a curve or a broken line, the cross section of the branch pipe is in the shape of one or a combination of a plurality of circular holes, rectangular holes, triangular holes and irregular special-shaped holes, and the hole pattern of the flow equalizing hole is in the shape of one or a combination of a plurality of circular holes, rectangular holes, triangular holes and irregular special-shaped holes.

3. The current diversity recited in claim 1 wherein: the system also comprises at least one main pipe arranged at the end part or the middle part of the flow diversity device, and each main pipe is communicated with at least one branch pipe.

4. A diversity current collector as recited in claim 3 wherein: the hydraulic diameter of branch pipe, from this branch pipe with the main pipe intercommunication department begins, along the length direction of this branch pipe reduces gradually, is located every a plurality of flow holes that all flow on the branch pipe wall distribute along the length direction of this branch pipe, the hydraulic diameter of flow hole, from this branch pipe with the main pipe intercommunication department begins, along the length direction of this branch pipe increases gradually or reduces.

5. The current diversity recited in claim 1 wherein: still include a plurality of set up in equal liquid chamber on the current collector outer wall of collection, every equal liquid chamber is through corresponding equal discharge orifice with at least one the branch pipe intercommunication.

6. The current diversity recited in claim 5 wherein: still including set up in the liquid chamber with flow equalizing channel between the flow equalizing hole, every the liquid chamber through the corresponding flow equalizing channel with at least one flow equalizing hole intercommunication.

7. The current diversity recited in claim 6 wherein: still include a plurality of set up in heat exchange tube jack on the equal liquid chamber, every the heat exchange tube jack with correspond equal liquid chamber intercommunication.

8. A microchannel heat exchanger, characterized in that: a current diversity device comprising a current diversity device as claimed in any one of claims 1 to 7.

9. The microchannel heat exchanger of claim 8, wherein: the diversity current collector of claim 7 further comprising microchannel flat tubes inserted into the heat exchange tube insertion holes and seal-welded, heat exchange fins welded or staked to heat exchange surfaces of the microchannel flat tubes.

10. A heat pump air conditioner is characterized in that: a current diversity device comprising a current diversity device as claimed in any one of claims 1 to 7.