CN223228859U

CN223228859U - A flow-balancing structure and heat exchanger

Info

Publication number: CN223228859U
Application number: CN202422263700.1U
Authority: CN
Inventors: 武乘旭; 韩双; 赵岩; 赵东; 赵继文; 王超
Original assignee: Liaoning Far East Heat Exchanger Equipment Manufacturing Co ltd
Current assignee: Liaoning Far East Heat Exchanger Equipment Manufacturing Co ltd
Priority date: 2024-09-15
Filing date: 2024-09-15
Publication date: 2025-08-15
Anticipated expiration: 2034-09-15

Abstract

The utility model discloses a flow equalizing structure and a heat exchanger, which relate to the technical field of heat exchangers and comprise a collecting pipe and a flow equalizing assembly, wherein one end of the collecting pipe is provided with a liquid inlet, the liquid inlet is externally connected with a connecting pipe, the flow equalizing assembly is fixed on the inner wall of the inlet of the liquid inlet and comprises a baffle plate, taper holes, side holes and ear plates, and the surface of the baffle plate is uniformly provided with the taper holes. The utility model provides a flow equalizing structure and a heat exchanger, wherein an 'M' -shaped structure baffle plate with a notch deviating from the liquid inlet direction is welded and fixed at the inlet of a liquid inlet, so that when the flow cross section of a square flow space in the liquid inlet is increased when a refrigerant is transited from a connecting pipe to the liquid inlet, fluid can be divided into a plurality of parts through conical holes, and the fluid is uniformly guided and diffused to the side wall of the square flow space of the liquid inlet through side holes on two sides of the baffle plate, thereby realizing uniform distribution of the fluid and avoiding severe turbulent mixing caused by suddenly enlarged flow cross section of the fluid.

Description

Flow equalizing structure and heat exchanger

Technical Field

The utility model relates to the technical field of heat exchangers, in particular to a flow equalizing structure and a heat exchanger.

Background

In the existing heat pump air conditioning system in the automobile, the energy efficiency ratio of the system is rapidly reduced under the low-temperature environment, and the heating performance is obviously insufficient, because the outdoor heat exchanger in the heat pump air conditioning system is used as an evaporator when the system heats, the surface temperature is very low in the working state, and the surface of the heat exchanger is easily frosted under the low-temperature use environment, so that the heat exchange performance of the heat exchanger is reduced.

The above-mentioned defect mainly is because the structural feature of current heat exchanger itself produces, and current heat exchanger is when working as the evaporimeter, the refrigerant that gets into in the heat exchanger is in gas-liquid two-phase mixing state, because the effect of gravity makes the refrigerant of upper portion region of flow less, the refrigerant of lower part region more, distribute very inhomogeneous, therefore it can not fully utilize to lead to the heat transfer area of part to be fully utilized, make the performance of heat exchanger not come into play, in addition, when the fluid is from the square flow space of circular connecting tube, the fluid cross-section suddenly becomes big, the flow takes place violent turbulent mixing, simultaneously because the abrupt change of flow cross-section shape, lead to fluid maldistribution in its flow, thereby seriously influence the heat transfer efficiency of heat exchanger.

Accordingly, in view of the above, the current equalizing structure and the heat exchanger are proposed to solve the shortcomings of the existing structure.

Disclosure of utility model

The utility model aims to provide a flow equalizing structure and a heat exchanger, which are used for solving the problems in the background technology.

The flow equalizing structure comprises a collecting pipe and a flow equalizing assembly, wherein one end of the collecting pipe is provided with a liquid inlet, the liquid inlet is externally connected with a connecting pipe, the flow equalizing assembly is fixed on the inner wall of the liquid inlet, the flow equalizing assembly comprises a baffle plate, taper holes, side holes and an ear plate, the surface of the baffle plate is uniformly provided with the taper holes, the two sides of the baffle plate are symmetrically provided with the side holes, and the two ends of the baffle plate are integrally bent into the ear plate.

Further, when the refrigerant is transited to the square flow space inside the liquid inlet from the connecting pipe, the flow cross section is increased.

Furthermore, the baffle plate is of an M-shaped structure with a notch deviating from the liquid inlet direction, and side holes on two sides of the baffle plate are opposite to the side wall of the liquid inlet.

Furthermore, the baffle plate is welded and fixed with the inner wall of the inlet of the liquid inlet through the lug plates at the two ends, and the transverse span of the baffle plate is larger than the caliber of the connecting pipe.

Furthermore, plugs are fixed at two ends of the collecting pipe, and a shunt port is formed in the bottom of the collecting pipe.

Furthermore, a baffle plate is clamped in the collecting pipe along the radial direction, the collecting pipe is separated by the baffle plate to form a plurality of processes, and the refrigerant is led in from the liquid inlet, sequentially flows through the processes and is led out from the liquid outlet at the other end of the collecting pipe.

Furthermore, the flow equalizing baffle plates are fixed in the collecting pipe and incline towards the direction away from the liquid inlet.

The heat exchanger is arranged on a flow equalizing structure and comprises heat exchange tubes, wherein the heat exchange tubes are arranged on opposite surfaces of two collecting pipes in parallel, and fins are fixed on the outer wall of each heat exchange tube along the extending direction.

Compared with the prior art, the utility model has the following beneficial effects:

1. When the utility model is used, the baffle plate with the 'M' -shaped structure, which is provided with the notch and deviates from the liquid inlet direction, is welded and fixed at the inlet of the liquid inlet, so that when the refrigerant is transited from the connecting pipe to the square flow space inside the liquid inlet and the overflow cross section is increased, the fluid can be divided into a plurality of parts through the taper holes, and the fluid is uniformly guided and diffused to the side wall of the square flow space of the liquid inlet through the side holes at the two sides of the baffle plate, thereby realizing uniform distribution of the fluid and avoiding severe turbulent mixing caused by suddenly enlarged flow overflow cross section of the fluid.

2. When the heat exchange device is used, the heat exchange pipes are separated to form a plurality of strokes by the partition plates, and the flow equalizing baffle plates are arranged at the positions of the collecting pipes corresponding to the strokes, so that the refrigerant in each stroke flows into each heat exchange pipe more uniformly and the heat exchange efficiency is improved.

Drawings

FIG. 1 is a schematic view of the overall external structure of the present utility model;

FIG. 2 is a schematic cross-sectional view of the header of the present utility model;

Fig. 3 is a schematic diagram of a current equalizing component structure in the present utility model.

In the figure, 1, collecting pipe; 2, a liquid inlet, 3, a connecting pipe, 4, a flow equalizing component, 401, a baffle plate, 402, a taper hole, 403, a side hole, 404, an ear plate, 5, a plug, 6, a flow dividing port, 7, a baffle plate, 8, a flow equalizing baffle plate, 9, a heat exchange pipe, 10 and fins.

Detailed Description

Embodiments of the present utility model are described in further detail below with reference to the accompanying drawings and examples. The following examples are illustrative of the utility model but are not intended to limit the scope of the utility model.

As shown in fig. 1 to 3, the flow equalizing structure comprises a collecting pipe 1 and a flow equalizing assembly 4, wherein one end of the collecting pipe 1 is provided with a liquid inlet 2, the liquid inlet 2 is externally connected with a connecting pipe 3, when a refrigerant is transited to a square flow space inside the liquid inlet 2 from the connecting pipe 3, the flow passing section is increased, the flow equalizing assembly 4 is fixed on the inner wall of the liquid inlet 2, the flow equalizing assembly 4 comprises a baffle 401, taper holes 402, side holes 403 and an ear plate 404, the surface of the baffle 401 is uniformly provided with the taper holes 402, the two sides of the baffle 401 are symmetrically provided with the side holes 403, the two ends of the baffle 401 are integrally bent into the ear plate 404, the baffle 401 is of an M-shaped structure with a notch deviating from the liquid inlet direction, the side holes 403 at the two sides of the baffle 401 are opposite to the side wall of the liquid inlet 2, the baffle 401 is welded and fixed with the inner wall of the liquid inlet 2 through the two ends of the ear plate 404, and the transverse span of the connecting pipe 401 is larger than 3 caliber;

The method has the specific operation that an 'M' -shaped structure baffle plate 401 with a notch deviating from the liquid inlet direction is welded and fixed at the inlet of the liquid inlet 2, so that when the refrigerant is transited from a connecting pipe 3 to the square flow space inside the liquid inlet 2 and the overflow cross section is increased, fluid can be divided into a plurality of parts through a taper hole 402, and the fluid is uniformly guided and diffused to the side wall of the square flow space of the liquid inlet 2 through side holes 403 on the two sides of the baffle plate 401, thereby realizing uniform distribution of the fluid and avoiding severe turbulent mixing caused by suddenly enlarged flow cross section of the fluid;

As shown in fig. 1, plugs 5 are fixed at two ends of a collecting pipe 1, a diversion opening 6 is formed at the bottom of the collecting pipe 1, a partition 7 is clamped in the collecting pipe 1 along the radial direction, the partition 7 separates the collecting pipe 1 to form a plurality of flows, a refrigerant is led in from a liquid inlet 2 and sequentially flows through the flows to be led out from a liquid outlet at the other end of the collecting pipe 1, a flow equalizing baffle 8 is fixed in the collecting pipe 1, the flow equalizing baffle 8 inclines towards the direction away from the liquid inlet 2, and the heat exchanger is arranged in a flow equalizing structure and comprises heat exchange pipes 9, the heat exchange pipes 9 are arranged on opposite surfaces of the two collecting pipes 1 in parallel, and fins 10 are fixed on the outer wall of the heat exchange pipes 9 along the extending direction;

The heat exchange tube 9 is divided into a plurality of strokes by the partition plate 7, and the flow equalizing baffle plates 8 are arranged at the position of the collecting pipe 1 corresponding to each stroke, and the flow equalizing baffle plates 8 incline towards the direction away from the liquid inlet 2, so that the refrigerant in each stroke flows into each heat exchange tube 9 more uniformly, and the heat exchange efficiency is improved.

When the flow equalizing structure and the heat exchanger are used, the 'M' -shaped structure baffle plate 401 with the notch deviating from the liquid inlet direction is welded and fixed at the inlet of the liquid inlet 2, so that when the flow passing cross section of a square flow space in the liquid inlet 2 is increased when a refrigerant is transited from a connecting pipe 3 to the liquid inlet 2, fluid can be divided into a plurality of parts through the taper holes 402, and the fluid is uniformly guided and diffused to the side wall of the square flow space of the liquid inlet 2 through the side holes 403 on the two sides of the baffle plate 401, so that the uniform distribution of the fluid is realized, the severe turbulent mixing caused by the abrupt increase of the flow passing cross section of the fluid is avoided, in addition, the heat exchange pipes 9 are separated to form a plurality of strokes through the baffle plates 7, and the flow equalizing baffle plates 8 are arranged at the position of the collecting pipe 1 corresponding to each stroke, and are inclined towards the direction away from the liquid inlet 2, so that the refrigerant flows into each heat exchange pipe 9 more uniformly in each stroke, and the heat exchange efficiency is improved.

The embodiments of the utility model have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the utility model in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, and to enable others of ordinary skill in the art to understand the utility model for various embodiments with various modifications as are suited to the particular use contemplated.

Claims

1. The utility model provides a flow equalizing structure, includes pressure manifold (1) and flow equalizing subassembly (4), its characterized in that, pressure manifold (1) one end is equipped with inlet (2), and inlet (2) external take over (3), flow equalizing subassembly (4) are fixed in inlet (2) entry inner wall, flow equalizing subassembly (4) include baffle (401), taper hole (402), side opening (403) and otic placode (404), taper hole (402) have evenly been seted up on baffle (401) surface, and baffle (401) bilateral symmetry has seted up side opening (403) to baffle (401) both ends integral type are buckled into otic placode (404).

2. The flow equalizing structure according to claim 1, wherein the flow cross section increases when the refrigerant passes from the connection pipe (3) to the square flow space inside the liquid inlet (2).

3. The flow equalizing structure according to claim 1, wherein the baffle plate (401) is of an 'M' -shaped structure with a notch deviating from the liquid inlet direction, and side holes (403) on two sides of the baffle plate (401) are opposite to the side wall of the liquid inlet (2).

4. The flow equalizing structure according to claim 1, wherein the baffle plate (401) is welded and fixed with the inner wall of the inlet of the liquid inlet (2) through two end lug plates (404), and the transverse span of the baffle plate (401) is larger than the caliber of the connecting pipe (3).

5. The flow equalizing structure according to claim 1, wherein plugs (5) are fixed at two ends of the collecting pipe (1), and a shunt port (6) is formed in the bottom of the collecting pipe (1).

6. The flow equalizing structure according to claim 1, wherein a partition plate (7) is radially clamped inside the collecting pipe (1), the partition plate (7) separates the collecting pipe (1) to form a plurality of flows, and the refrigerant is led in from the liquid inlet (2) and led out from the liquid outlet at the other end of the collecting pipe (1) through the plurality of flows in sequence.

7. The flow equalizing structure according to claim 1, wherein flow equalizing baffle plates (8) are fixed in the collecting pipe (1), and the flow equalizing baffle plates (8) incline in a direction away from the liquid inlet (2).

8. A heat exchanger, which is installed on a flow equalizing structure according to any one of claims 1-7, and is characterized by comprising heat exchange tubes (9), wherein the heat exchange tubes (9) are arranged on opposite surfaces of two collecting pipes (1) in parallel, and fins (10) are fixed on the outer wall of the heat exchange tubes (9) along the extending direction.