CN217131929U

CN217131929U - Three-medium heat exchanger for vehicle

Info

Publication number: CN217131929U
Application number: CN202220288459.6U
Authority: CN
Inventors: 王知明; 余兆开; 刘旗; 穆景阳
Original assignee: Aitaisi Thermal System Research And Development Shanghai Co ltd
Current assignee: Aitaisi Thermal System Research And Development Shanghai Co ltd
Priority date: 2022-02-14
Filing date: 2022-02-14
Publication date: 2022-08-05
Anticipated expiration: 2032-02-14

Abstract

A three-medium heat exchanger for a vehicle, comprising: a pair of flat pipe of mouth organ, a plurality of level of relative vertical setting set up flat pipe and a pair of antifreeze who overlaps respectively and locate the flat bottom of tub of mouth organ pressure manifold between the flat pipe of mouth organ, wherein: the outer portions of the flat pipes corresponding to the anti-freezing liquid collecting pipes are provided with sleeves, and the windowing fins are arranged between the adjacent flat pipes and between the adjacent sleeves. The device solves the problems of condensation water and frosting risk of the external heat exchanger in the prior art, and simultaneously makes full use of waste heat to improve the performance of the heat pump under the low-temperature environment and improve the refrigeration performance under the high-temperature environment. The device integrates the antifreeze liquid loop with the refrigerant flat tube through the sleeve, improves the heating performance by about 7 percent compared with a heat pump system without waste heat recovery, saves geometric space and parts, can delay condensed water, effectively improves the NVH problem of an air conditioning system, and even can avoid the frosting application working condition through control; the supercooling degree of the refrigerant at the outlet of the heat exchanger can be improved, and the refrigerating capacity of the system is improved.

Description

Three-medium heat exchanger for vehicle

Technical Field

The utility model relates to a technique in the vehicle air conditioner field specifically is an automobile-used three medium heat exchanger.

Background

In the heat pump air-conditioning system of the new energy automobile, when the outdoor heat exchanger is used as an evaporator, heat is absorbed from the environment through a refrigerant medium, and the heat which can be absorbed is not high at the temperature of below-10 ℃ because the environment temperature is low and is limited by the property of the refrigerant medium. When the ambient humidity is relatively high, the outer heat exchanger is easy to condense water or frosts to influence the performance, the condensed water can be sucked by the fan, droplets hit on the fan blades running at high speed to cause abnormal sound, the imbalance of the fan can be aggravated, the fan blades and the heat exchanger or some parts in the vehicle cabin are subjected to friction interference for a long time, and the NVH (noise, vibration and harshness) is caused to reduce the comfort of the whole vehicle.

SUMMERY OF THE UTILITY MODEL

The utility model provides an above-mentioned problem, provide an automobile-used three medium heat exchanger, solved outside heat exchanger condensate water and the risk of frosting among the prior art, make full use of waste heat promotes heat pump performance under low temperature environment simultaneously. The device integrates the antifreeze liquid loop with the refrigerant flat tube through the sleeve, improves the heating performance by about 7 percent compared with a heat pump system without waste heat recovery, saves geometric space and parts, can delay condensed water, effectively improves the NVH problem of an air conditioning system, and even can avoid the frosting application working condition through control; the supercooling degree of the refrigerant at the outlet of the heat exchanger can be improved, and the refrigerating capacity of the system is improved.

The utility model discloses a realize through following technical scheme:

the utility model discloses a: a pair of flat pipe of mouth organ, a plurality of level of relative vertical setting set up flat pipe and a pair of antifreeze who overlaps respectively and locate the flat bottom of tub of mouth organ pressure manifold between the flat pipe of mouth organ, wherein: the outer portions of the flat pipes corresponding to the anti-freezing liquid collecting pipes are provided with sleeves, and the windowing fins are arranged between the adjacent flat pipes and between the adjacent sleeves.

The upper end and the lower end of one flat harmonica tube in the pair of flat harmonica tubes are respectively provided with a refrigerant inlet and a refrigerant outlet, and the anti-freezing liquid collecting pipes on the two sides are respectively provided with an anti-freezing liquid outlet and an anti-freezing liquid inlet.

The flat harmonica tubes and the flat tubes between the flat harmonica tubes are filled with refrigerant media, the anti-freezing liquid collecting pipe is filled with anti-freezing media, the flat tubes between the flat harmonica tubes and the outer parts of the sleeves are air media, and the three media transfer heat from inside to outside or from outside to inside in sequence.

The refrigerant medium and the antifreezing medium are not communicated with each other and have opposite flow directions.

Drawings

FIG. 1 is a schematic view of the present invention;

FIG. 2 is a cross-sectional view of a three media heat exchanger sleeve;

FIG. 3 is a partial detailed view of the cannula;

FIG. 4 is a schematic perspective view of an antifreeze fluid collecting pipe;

FIG. 5 is a schematic view of the entire apparatus;

in the figure: 1 flat harmonica tube, 2 upper baffles, 3 flat tubes, 4 partition plates, 5 sleeves, 6 antifreeze liquid outlets, 7 lower baffles, 8 windowing fins, 9 antifreeze liquid inlets, 10 refrigerant outlets, 11 refrigerant inlets, 12 antifreeze liquid collecting pipes, 13 extrusion ribs, 14 flat harmonica tubes and 15 antifreeze liquid collecting pipes.

Detailed Description

As shown in fig. 1, the present embodiment relates to a three-medium heat exchanger for a vehicle, including: a pair of flat pipe 1 of mouth organ, 14, a plurality of level of relative vertical setting set up flat pipe 3 between the flat pipe of mouth organ and correspond the anti-icing

fluid pressure manifold

12, 15 of the bottom of the flat pipe 1 of mouth organ, 14 is located to the cover, wherein: the flat tubes 3 corresponding to the anti-freezing

liquid collecting pipes

12 and 15 are externally provided with sleeves 5, and the flat tubes 3 horizontally arranged between the flat harmonica tubes and the sleeves 5 are provided with window fins 8.

The upper end and the lower end of one harmonica flat tube 14 in the pair of harmonica flat tubes are respectively provided with a refrigerant inlet 11 and an outlet 10, and the anti-freezing solution collecting pipes on the two sides are respectively provided with an anti-freezing solution outlet 6 and an anti-freezing solution inlet 9.

As shown in fig. 3, the flat tubes 3 corresponding to the

antifreeze collectors

12 and 15 are provided with a pressing rib 13 inside.

The

flat tubes

1 and 14 of the harmonica are filled with refrigerant media.

The anti-freezing

liquid collecting pipes

12 and 15 and the flat pipes 3 between the harmonica flat pipes are filled with anti-freezing media.

The flat tubes 3 horizontally arranged between the flat tubes of the harmonica and the outer parts of the sleeves 5 are air media, and the three heat exchange media transfer heat from inside to outside or from outside to inside in sequence.

The refrigerant medium and the antifreezing medium are not communicated with each other and flow in opposite directions, but are realized in a manner that the antifreezing

solution collecting pipes

12 and 15 and the

flat harmonica pipes

1 and 14 are separated, namely the antifreezing

solution collecting pipes

12 and 15 are internally nested with the flat harmonica pipes.

The flat harmonica tube 14 is provided with a partition plate 4, the flat harmonica tube 14 is divided into two chambers by the partition plate 4, so that a refrigerant flows from the upper part of the partition plate 4 to the flat harmonica tube 1, and flows out from the lower part of the partition plate 4 after flowing back.

And the top of the flat tube of the harmonica and the bottom of the anti-freezing solution collecting pipe are respectively provided with an upper baffle 2 and a lower baffle 7.

The refrigerant enters the flat harmonica tubes 14 through the refrigerant inlet 11, flows to the flat harmonica tubes 1 through the flat tubes 3 above the partition plate 4, flows to the flat harmonica tubes 14 through the flat tubes 3 at the lower part of the partition plate 4, flows out from the refrigerant outlet 10, and is a flow of a supercooling section when the heat exchanger is used as a condenser and a flow of a superheating section when the heat exchanger is used as an evaporator; the antifreeze enters the sleeve 5 from the antifreeze inlet 9 and then flows out from the antifreeze outlet 6, and reversely flows with the refrigerant in the flat tube 3 below the clapboard 4 to exchange heat. When the heat exchanger is used as a condenser, the antifreeze in the sleeve 6 can be beneficial to heat dissipation and increase the supercooling degree, so that the refrigerating performance is improved by about 4 percent. When the heat exchanger is used as an evaporator, the heat of the antifreeze is absorbed by the refrigerant, the heating benefit is increased by about 7%, and meanwhile, the risk of condensation water and frosting is reduced.

After the sleeve 5 is adopted, the refrigerant can exchange heat with the antifreeze, and the convective heat transfer coefficient of the antifreeze is larger than that of air. Under some condensing conditions, the condenser has good heat dissipation effect and can increase the supercooling degree of the refrigerant outlet. Under the evaporation working condition, the refrigerant can absorb the heat of air and antifreeze to complete the evaporation process, when the antifreeze is connected with the motor in series, the energy efficiency ratio can be further improved by absorbing the waste heat of the motor, and the risk of frosting of the heat exchange fins can be avoided in a low-temperature high-humidity environment interval in which frosting is easy to occur.

This device adopts three kinds of media to accomplish heat exchange through the heat exchanger, does not need extra waste heat recovery ware, and it compares with current conventional technical means and has apparent improved technical details specifically: refrigerant flows inside the sleeve, antifreeze flows in the interlayer, and air flows on the outermost layer, so that heat exchange of the three media from inside to outside and from outside to inside is realized.

At an ambient temperature of-10 ℃, the heating performance of the three-medium exchanger is improved by about 7% in a heating mode, and the external exchanger is not easy to frost. At the ambient temperature of 38 ℃, when in a refrigeration mode, the heating performance of the three-medium exchanger is improved by about 4 percent.

Compared with the prior art, the performance index of the device is improved by improving the heat exchange performance of the external heat exchanger, so that the refrigeration and heating performance of the system are improved, and the frosting risk of the external heat exchanger is reduced.

The foregoing embodiments may be modified in many different ways to achieve the same purpose, without departing from the spirit and scope of the invention, which is defined by the following claims.

Claims

1. A three-medium heat exchanger for a vehicle, comprising: a pair of flat pipe of mouth organ, a plurality of level of relative vertical setting set up flat pipe and a pair of antifreeze who overlaps respectively and locate the flat bottom of tub of mouth organ pressure manifold between the flat pipe of mouth organ, wherein: the outer portions of the flat pipes corresponding to the anti-freezing liquid collecting pipes are provided with sleeves, and the windowing fins are arranged between the adjacent flat pipes and between the adjacent sleeves.

2. The vehicular three-medium heat exchanger as claimed in claim 1, wherein the flat harmonica tubes and the flat tubes between the flat harmonica tubes are filled with refrigerant medium, the anti-freezing liquid collecting pipe is filled with anti-freezing medium, and the flat tubes between the flat harmonica tubes and the outside of the sleeve are filled with air medium.

3. The vehicular three-medium heat exchanger as claimed in claim 2, wherein the upper and lower ends of one flat harmonica tube of the pair of flat harmonica tubes are respectively provided with a refrigerant inlet and a refrigerant outlet, and the anti-freezing liquid collecting pipes at the two sides are respectively provided with an anti-freezing liquid outlet and an anti-freezing liquid inlet.

4. The vehicular three-medium heat exchanger as claimed in claim 2, wherein the antifreeze fluid collecting pipe and the harmonica flat pipes are separated, that is, the harmonica flat pipes are nested inside the antifreeze fluid collecting pipe, and the refrigerant medium and the antifreeze medium are not communicated with each other and flow in opposite directions.

5. The vehicular three-medium heat exchanger according to claim 1, wherein the flat harmonica tube is provided with a partition plate which partitions the flat harmonica tube into two chambers, and the refrigerant medium flows from an upper portion of the partition plate to the flat harmonica tube, and flows out through a lower portion of the partition plate after flowing back.

6. The vehicular three-medium heat exchanger as claimed in claim 1, wherein the top of the flat harmonica tube and the bottom of the anti-freezing fluid collecting pipe are respectively provided with an upper baffle and a lower baffle.