CN211977674U - Heat exchanger and collecting pipe assembly thereof - Google Patents

Abstract

The utility model relates to a heat exchanger and pressure manifold subassembly thereof, this pressure manifold subassembly includes pressure manifold (1) and sets up draught tube (4) in pressure manifold (1), the inside of pressure manifold (1) has first cavity (2) and second cavity (3), be formed with entry (21) that are used for supplying the refrigerant to flow in on first cavity (2), be formed with the confession on second cavity (3) export (31) that the refrigerant flows out, the one end of draught tube (4) is located in first cavity (2) and with first cavity (2) intercommunication, the other end is located in second cavity (3) and with second cavity (3) intercommunication. The through pipe communicated with the first cavity and the second cavity is arranged in the collecting pipe, so that the refrigerant in the first cavity can flow into the second cavity under the action of pressure, a liquid storage pipe does not need to be arranged outside the collecting pipe, and when the collecting pipe assembly is used for a heat exchanger, the size of the heat exchanger can be effectively reduced.

Description

Heat exchanger and collecting pipe assembly thereof

Technical Field

The disclosure relates to the technical field of heat exchange equipment, in particular to a heat exchanger and a collecting pipe assembly thereof.

Background

In an air conditioning system, a heat exchanger is a heat exchange device that can exchange heat between a refrigerant and the outside. In the prior art, a heat exchanger generally includes a first collecting pipe, a second collecting pipe, a heat exchange pipe and a liquid storage pipe, the first collecting pipe generally has a first chamber and a second chamber that are not communicated with each other, the second collecting pipe generally has a third chamber and a fourth chamber that are not communicated with each other, an inlet for a refrigerant to flow into the heat exchanger is formed on the first chamber, an outlet for the refrigerant to flow out of the heat exchanger is formed on the second chamber, the first chamber and the third chamber and the second chamber and the fourth chamber are communicated with each other through the heat exchange pipe, the liquid storage pipe is generally welded on the second collecting pipe, the inlet of the liquid storage pipe is communicated with the third chamber, and the outlet of the liquid storage pipe is communicated with the fourth chamber.

Therefore, after the refrigerant flows into the first cavity, the refrigerant can exchange heat through the heat exchange tube and flow into the third cavity, the refrigerant in the third cavity flows into the liquid storage tube to be subjected to gas-liquid separation, and the gaseous refrigerant or the liquid refrigerant flows into the fourth cavity through the outlet of the liquid storage tube and flows out of the heat exchanger through the heat exchange tube and the second cavity in sequence. Because the third cavity and the fourth cavity are not communicated with each other, the refrigerant in the third cavity can only flow into the fourth cavity through the liquid storage pipe and then flows out of the heat exchanger, and the liquid storage pipe arranged outside the second collecting pipe can increase the volume of the heat exchanger, so that the heat exchanger is not easy to install.

SUMMERY OF THE UTILITY MODEL

The purpose of this disclosure is to provide a heat exchanger and collecting pipe subassembly thereof, this collecting pipe subassembly can reduce the volume of heat exchanger effectively, makes the heat exchanger more convenient to install.

In order to achieve the above object, the present disclosure provides a header pipe assembly of a heat exchanger, including a header pipe and a flow tube arranged in the header pipe, the inside of the header pipe has a first chamber and a second chamber, an inlet for a refrigerant to flow into is formed on the first chamber, an outlet for the refrigerant to flow out is formed on the second chamber, one end of the flow tube is located in the first chamber and communicated with the first chamber, and the other end is located in the second chamber and communicated with the second chamber.

Optionally, the collecting pipe has a first end face and a second end face opposite to each other in the axial direction, the first end face is located in the first cavity, the second end face is located in the second cavity, the first end of the flow pipe abuts against the first end face, the second end of the flow pipe is formed as an open end and is arranged at an interval with the second end face, and a first opening for allowing the refrigerant in the first cavity to flow into is formed in the side wall of the flow pipe close to the first end.

Optionally, one end of the first opening is closed and the other end is open, and the first end face closes the open end of the first opening.

Optionally, a distance between the closed end of the first opening and the first end face is less than a diameter of the draft tube.

Optionally, a second opening through which the refrigerant flows out is formed in the draft tube, and the second opening is located in the second chamber.

Optionally, a positioning protrusion is formed on the first end surface, and the positioning protrusion stops on the outer circumferential surface of the draft tube.

Optionally, the central axis of the header is located between the central axis of the draft tube and the inlet.

Optionally, the header assembly further includes a partition plate, the partition plate is installed in the header and divides the interior of the header into the first chamber and the second chamber, a through hole for the flow tube to pass through is formed in the partition plate, and the shape and size of the through hole are matched with those of the flow tube.

Optionally, the draft tube has a diameter of less than 10 mm.

According to another aspect of the present disclosure, there is provided a heat exchanger comprising the header assembly described above.

Through above-mentioned technical scheme, because be formed with the entry that supplies the refrigerant to flow into on the first cavity, and through the through-flow pipe intercommunication between first cavity and the second cavity, after the refrigerant constantly flowed into first cavity, pressure in the first cavity increases to make the refrigerant can be impressed the through-flow pipe under the effect of pressure, and flow into the second cavity via the siphunculus, finally follow the export outflow pressure manifold on the second cavity. Compared with the technical scheme that different cavities in the collecting pipe are communicated by arranging the liquid storage pipe outside the collecting pipe in the prior art, the refrigerant in the first cavity can flow into the second cavity under the action of pressure by arranging the flow-through pipe communicated with the first cavity and the second cavity inside the collecting pipe, so that the liquid storage pipe does not need to be arranged outside the collecting pipe. Like this, when this disclosed collecting main subassembly is used for the heat exchanger, can reduce the volume of heat exchanger effectively, reduce the structural complexity of heat exchanger to make the heat exchanger be convenient for install more.

And, gas-liquid two-phase refrigerant can separate in first cavity, because the gravity of gaseous refrigerant and liquid refrigerant is different, gaseous refrigerant assembles the top at first cavity, and liquid refrigerant assembles the below at first cavity, just can make gaseous refrigerant or liquid refrigerant flow into the second cavity through the draft tube through the position of adjustment draft tube in first cavity to satisfy the requirement of heat exchanger to the physical state of its refrigerant of flowing out.

Additional features and advantages of the disclosure will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:

FIG. 1 is an exploded view of a header assembly of a heat exchanger provided by an exemplary embodiment of the present disclosure;

FIG. 2 is a cross-sectional view of a header assembly of a heat exchanger provided by an exemplary embodiment of the present disclosure;

FIG. 3 is an enlarged view of portion A of FIG. 2;

FIG. 4 is an exploded view of a heat exchanger provided in an exemplary embodiment of the present disclosure;

FIG. 5 is a cross-sectional view of a heat exchanger provided by an exemplary embodiment of the present disclosure;

fig. 6 is a schematic flow direction diagram of a refrigerant in a heat exchanger according to an exemplary embodiment of the present disclosure, where a straight arrow indicates a flow direction of the refrigerant.

Description of the reference numerals

1-collecting pipe; 11-a first end face; 12-a second end face; 13-positioning the projection; 2-a first chamber; 21-an inlet; 3-a second chamber; 31-an outlet; 4-a draft tube; 41-a first end; 42-a second end; 43-first opening; 44-a second opening; 5-a separator; 51-a through hole; 6-first end cap; 7-a second end cap; 100-a first manifold assembly; 200-a second manifold assembly; 201-header of second header assembly; 202-a third chamber; 203-a fourth chamber; 204-heat exchanger inlet; 205-heat exchanger outlet; 300-a first heat exchange tube; 400-a second heat exchange tube; 500-inlet connection; 600-outlet connection; l1 — distance between the closed end of the first opening and the first end face; l2 — distance between the closed end of the second opening and the separator; l3 — distance between the axis of the header and the outer wall of the draft tube; o1-center axis of manifold; o2-central axis of draft tube.

Detailed Description

The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.

In the present disclosure, unless otherwise specified, the use of the directional terms such as "upper" and "lower" are generally defined with reference to the drawing direction of the corresponding drawings, and "inner" and "outer" refer to inner and outer with respect to the outline of the corresponding part itself, but those skilled in the art will understand that the above directional terms are merely used to explain and illustrate the present disclosure, and are not intended to limit the same. Furthermore, terms such as "first," "second," and the like, are used herein to distinguish one element from another, and are not necessarily sequential or significant.

As shown in fig. 1 to fig. 3, the present disclosure provides a header assembly of a heat exchanger, including a header 1 and a vent pipe 4 disposed in the header 1, the inside of the header 1 has a first chamber 2 and a second chamber 3, an inlet 21 for a refrigerant to flow into is formed on the first chamber 2, an outlet 31 for a refrigerant to flow out is formed on the second chamber 3, one end of the vent pipe 4 is located in the first chamber 2 and is communicated with the first chamber 2, and the other end is located in the second chamber 3 and is communicated with the second chamber 3, so that the refrigerant flowing in from the inlet 21 on the first chamber 2 can flow into the second chamber 3 through the vent pipe 4, and then flows out of the header 1 through the outlet 31 on the second chamber 3.

Through the technical scheme, because the inlet 21 for the refrigerant to flow into is formed in the first cavity 2, and the first cavity 2 is communicated with the second cavity 3 through the through flow pipe 4, after the refrigerant continuously flows into the first cavity 2, the pressure in the first cavity 2 is increased, so that the refrigerant can be pressed into the through flow pipe 4 under the action of the pressure, and flows into the second cavity 3 through the through flow pipe, and finally flows out of the collecting pipe 1 from the outlet 31 on the second cavity 3. Compared with the prior art that the liquid storage pipe is arranged outside the collecting pipe to conduct different chambers in the collecting pipe, in the present disclosure, the flow pipe 4 communicated with the first chamber 2 and the second chamber 3 is arranged inside the collecting pipe 1, so that the refrigerant in the first chamber 2 can flow into the second chamber 3 under the pressure action, and the liquid storage pipe does not need to be arranged outside the collecting pipe 1. Like this, when this disclosed collecting main subassembly is used for the heat exchanger, can reduce the volume of heat exchanger effectively, reduce the structural complexity of heat exchanger to make the heat exchanger be convenient for install more.

And, gas-liquid two-phase refrigerant can separate in first cavity 2, because the gravity of gaseous refrigerant and liquid refrigerant is different, gaseous refrigerant assembles in the top of first cavity 2, and liquid refrigerant assembles the below at first cavity 2, just can make gaseous refrigerant or liquid refrigerant flow into second cavity 3 through adjusting the position of draught tube 4 in first cavity 2 to satisfy the requirement of the heat exchanger to the physical state of its refrigerant of flowing out.

For example, when the heat exchanger is used as an evaporator of an air conditioning system, the communication position between the draft tube 4 and the first chamber 2 can be located above the first chamber 2, so that gaseous refrigerant flows out of the evaporator as much as possible, and the heating effect of the air conditioning system is improved; when the heat exchanger is used as a condenser of an air conditioning system, the communication position of the draft tube 4 and the first chamber 2 can be positioned below the first chamber 2, so that liquid refrigerant flows out of the condenser as much as possible, and the refrigeration effect of the air conditioning system is improved.

In order to enable the draft tube 4 to communicate the first chamber 2 and the second chamber 3, in an embodiment provided by the present disclosure, the manifold 1 has a first end surface 11 and a second end surface 12 opposite to each other along the axial direction thereof, both ends of the draft tube 4 may be formed as open ends, the first open end of the draft tube 4 is disposed at an interval from the first end surface 11, and the second open end of the draft tube 4 is disposed at an interval from the second end surface 12, so that the first end surface 11 and the second end surface 12 are prevented from closing the first open end and the second open end of the draft tube 4, and thus the refrigerant may flow in through the first open end of the draft tube 4 and flow out from the second open end of the draft tube 4.

In another embodiment provided by the present disclosure, referring to fig. 1 and 2, the header 1 has a first end surface 11 and a second end surface 12 opposite to each other along an axial direction thereof, the first end surface 11 is located in the first chamber 2, the second end surface 12 is located in the second chamber 3, the first end 41 of the flow pipe 4 abuts against the first end surface 11, the second end 42 of the flow pipe 4 is formed as an open end and is spaced apart from the second end surface 12, and a first opening 43 for allowing the refrigerant in the first chamber 2 to flow into is formed on a side wall of the flow pipe 4 close to the first end 41. The first end 41 of the draft tube 4 abuts against the first end face 11, so that the first end face 11 can support the draft tube 4, and the draft tube 4 is convenient to mount. When the utility model provides a header pipe assembly is installed along vertical direction, and first cavity 2 is located second cavity 3 below, liquid refrigerant gathering after the separation is in the below of first cavity 2, be close to the position of first terminal surface 11 promptly, because be formed with first opening 43 on the lateral wall that draft tube 4 is close to first end 41 (be close to first terminal surface 11 promptly), make the liquid refrigerant that is located near first terminal surface 11 can get into in draft tube 4 through first opening 43 under the pressure effect, thereby when the heat exchanger uses as the condenser, make the refrigerant that flows from the heat exchanger mostly be liquid refrigerant, improve air conditioning system's refrigeration effect.

Alternatively, the header 1 may be integrally formed into a closed cavity structure with both closed ends, or may be formed into a hollow structure with both open ends, for an embodiment in which the header 1 is formed into a hollow structure with both open ends, one open end of the header 1 may be closed by a first end cover 6, and the other open end may be closed by a second end cover 7, where an end surface of the first end cover 6 located in the header 1 is the first end surface 11, and an end surface of the second end cover 7 located in the header 1 is the second end surface 12.

Optionally, the first chamber 2 and the second chamber 3 may be integrally formed in the header 1, or, as shown in fig. 1 and fig. 2, the header assembly may further include a partition plate 5, the partition plate 5 is installed in the header 1 and partitions the interior of the header 1 into the first chamber 2 and the second chamber 3, a through hole 51 through which the flow tube 4 passes is formed in the partition plate 5, and the shape and size of the through hole 51 are adapted to the shape and size of the flow tube 4, so as to prevent the refrigerant from entering the second chamber 3 from a gap between the flow tube 4 and the through hole 51. The wall of the through hole 51 may be welded to the outer circumferential surface of the draft tube 4 so that the draft tube 4 can be stably connected to the partition 5.

The first opening 43 may have any suitable configuration and shape, for example, the first opening 43 may be circular, oval, etc. Alternatively, in an exemplary embodiment provided by the present disclosure, as shown in fig. 3, one end of the first opening 43 is closed and the other end is open, and the first end surface 11 closes the open end of the first opening 43, so that the refrigerant at the first end surface 11 can also flow into the flow tube 4 through the first opening 43, and compared to a structure in which the first opening 43 is closed at both ends, it is possible to prevent the refrigerant at the first end surface 11 from being stopped outside the flow tube 4 and not flowing into the flow tube 4. Alternatively, the first opening 43 may be formed in a U-shaped structure, an arc-shaped structure, a V-shaped structure, or the like that opens toward the first end face 11, and the specific shape of the first opening 43 is not limited by the present disclosure.

Further, in order to make the refrigerant flowing into the draft tube 4 through the first opening 43 as liquid refrigerant as possible, the distance L1 between the closed end of the first opening 43 and the first end surface 11 may be smaller than the diameter of the draft tube 4, so that the distance L1 between the closed end of the first opening 43 and the first end surface 11 is within the height range of the liquid refrigerant after gas-liquid separation as much as possible.

Alternatively, the diameter of the draft tube 4 may be less than 10mm, thereby ensuring that the refrigerant can flow in the axial direction of the draft tube 4 according to the capillary action.

In addition, as shown in fig. 1 and 2, a second opening 44 through which the refrigerant flows out may be formed in the flow pipe 4, and the second opening 44 is located in the second chamber 3, so that the refrigerant in the flow pipe 4 may flow out of the flow pipe 4 through the open end of the flow pipe 4 and the second opening 44, so that the refrigerant is distributed in the second chamber 3 as uniformly as possible, and on the other hand, the second opening 44 may perform noise reduction and silencing functions on the refrigerant flowing out of the flow pipe 4, thereby reducing noise.

Alternatively, as shown in fig. 2, the second opening 44 may be formed in a structure that is open at one end and closed at the other end, the open end of the second opening 44 faces the second end face 12, and the distance L2 between the closed end of the second opening 44 and the partition 5 may be smaller than the diameter of the draft tube 4.

In order to facilitate the installation of the draft tube 4, in an embodiment provided by the present disclosure, as shown in fig. 3, a positioning protrusion 13 is formed on the first end surface 11, and the positioning protrusion 13 is stopped on the outer circumferential surface of the draft tube 4, when installing, the draft tube 4 can be inserted into the manifold 1, so that the draft tube 4 is stopped in the positioning protrusion 13, thereby positioning the draft tube 4 and facilitating the installation of the draft tube 4. Alternatively, the positioning protrusion 13 may be an annular protrusion, an arc-shaped protrusion, or the like, and the specific shape of the positioning protrusion 13 is not limited by the present disclosure.

In mounting the header assembly provided by the present disclosure on a heat exchanger, one end of a heat exchange tube (e.g., a flat tube) of the heat exchanger is usually inserted into the inlet 21 (refer to fig. 5) of the first chamber 2 to enable a refrigerant to flow into the first chamber 2, in order to avoid mechanical interference between the draft tube 4 and the inserted heat exchange tube, alternatively, as shown in fig. 2 and 3, the central axis O1 of the header 1 may be located between the central axis O2 of the draft tube 4 and the inlet 21 of the first chamber 2, that is, the axis of the draft tube 4 is eccentrically arranged with respect to the axis of the header 1, and the axis of the draft tube 4 is located on the side of the axis of the header 1 away from the inlet 21.

Alternatively, the distance L3 between the axis of the header 1 and the outer wall of the draft tube 4 may be greater than the radius of the draft tube 4.

According to another aspect of the present disclosure, illustrated with reference to fig. 4-6, a heat exchanger is provided comprising the header assembly described above.

As an alternative embodiment, as shown in fig. 4 and 5, the heat exchanger may include a first header assembly 100, a second header assembly 200, a first heat exchange tube 300 and a second heat exchange tube 400, the first header assembly 100 is the above-mentioned header assembly, the header 201 of the second header assembly 200 has a third chamber 202 and a fourth chamber 203 inside, the third chamber 202 has a heat exchanger inlet 204 formed thereon, the fourth chamber 203 has a heat exchanger outlet 205 formed thereon, the third chamber 202 of the header 201 of the second header assembly 200 communicates with the inlet 21 of the first chamber 2 of the header 1 of the first header assembly 100 through the first heat exchange tube 300, and the outlet 31 of the second chamber 3 of the header 1 of the first header assembly 100 communicates with the fourth chamber 203 of the header 201 of the second header assembly 200 through the second heat exchange tube 400.

In the above embodiment, as shown in fig. 6, the refrigerant can enter the third chamber 202 from the heat exchanger inlet 204, and enters the first chamber 2 after heat exchange through the first heat exchange tube 300, as the refrigerant continuously enters the first chamber 2, the pressure inside the first chamber 2 increases, the refrigerant is pressed into the draft tube 4 under the action of the pressure and flows into the second chamber 3, and the refrigerant inside the second chamber 3 flows into the fourth chamber 203 through the second heat exchange tube 400, and finally flows out of the heat exchanger through the heat exchanger outlet 205 on the fourth chamber 203.

Alternatively, an inlet joint may be provided at the heat exchanger inlet 204 and an outlet joint 600 may be provided at the heat exchanger outlet 205.

The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various combinations that are possible in the present disclosure are not described again.

In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.

Claims (10)

1. The collecting pipe assembly of the heat exchanger is characterized by comprising a collecting pipe (1) and a through flow pipe (4) arranged in the collecting pipe (1), wherein a first cavity (2) and a second cavity (3) are arranged in the collecting pipe (1), an inlet (21) for a refrigerant to flow into is formed in the first cavity (2), an outlet (31) for the refrigerant to flow out is formed in the second cavity (3), one end of the through flow pipe (4) is located in the first cavity (2) and communicated with the first cavity (2), and the other end of the through flow pipe is located in the second cavity (3) and communicated with the second cavity (3).

2. Header assembly according to claim 1, wherein the header (1) has a first end face (11) and a second end face (12) opposite to each other along an axial direction thereof, the first end face (11) is located in the first chamber (2), the second end face (12) is located in the second chamber (3), a first end (41) of the flow pipe (4) abuts against the first end face (11), a second end (42) of the flow pipe (4) is formed as an open end and is spaced apart from the second end face (12), and a first opening (43) for allowing the refrigerant in the first chamber (2) to flow into is formed on a side wall of the flow pipe (4) close to the first end (41).

3. Header assembly according to claim 2, wherein said first opening (43) is closed at one end and open at the other end, said first end face (11) closing the open end of said first opening (43).

4. Manifold assembly according to claim 3, characterized in that the distance (L1) between the closed end of the first opening (43) and the first end face (11) is smaller than the diameter of the draft tube (4).

5. Header assembly according to claim 2, characterized in that said draft tube (4) further defines a second opening (44) for said coolant to flow out, said second opening (44) being located in said second chamber (3).

6. Header assembly according to claim 2, characterized in that said first end face (11) is formed with a positioning projection (13), said positioning projection (13) being stopped against the outer peripheral surface of said draft tube (4).

7. Header assembly according to claim 1, characterized in that the central axis (O1) of the header (1) is located between the central axis (O2) of the draft tube (4) and the inlet (21).

8. Header assembly according to any of claims 1 to 7, further comprising a partition (5), said partition (5) being mounted inside said header (1) and dividing the interior of said header (1) into said first chamber (2) and said second chamber (3), said partition (5) being formed with through holes (51) for said through flow tubes (4), said through holes (51) having a shape and dimensions adapted to the shape and dimensions of said through flow tubes (4).

9. Header assembly according to any of claims 1 to 7, characterised in that said draught tubes (4) have a diameter of less than 10 mm.

10. A heat exchanger, characterized by comprising a header assembly according to any one of claims 1 to 9.

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