CN114440694A

CN114440694A - Collecting pipe, heat exchanger and air conditioner

Info

Publication number: CN114440694A
Application number: CN202210145588.4A
Authority: CN
Inventors: 徐正本
Original assignee: Songz Automobile Air Conditioning Co Ltd
Current assignee: Songz Automobile Air Conditioning Co Ltd
Priority date: 2022-02-17
Filing date: 2022-02-17
Publication date: 2022-05-06

Abstract

The invention belongs to the technical field of air conditioners and discloses a collecting pipe, a heat exchanger and an air conditioner, wherein a connecting plate, an end plate and a partition plate of the collecting pipe extend along the axial direction of the collecting pipe, the end plate is buckled and connected with the connecting plate, one end of the partition plate is connected with the connecting plate, the other end of the partition plate is connected with the end plate, two small inner cavities are formed on two sides of the partition plate, the end plates on two sides of the partition plate are arc-shaped plates, the distance between the top of each arc-shaped plate and the connecting plate is equal to the diameter of each arc-shaped plate, namely, the height and the width of each small inner cavity are equal, the cross section of each small inner cavity is roughly of a semicircular structure by matching with the arc-shaped structures of the end plates, and compared with an inner cavity with the rectangular cross section, the pressure resistance of the semicircular structure is higher, so that the structure has the effect of improving the pressure resistance of the inner cavities, and further can effectively improve the pressure resistance of the collecting pipe.

Description

Collecting pipe, heat exchanger and air conditioner

Technical Field

The invention relates to the technical field of air conditioners, in particular to a collecting pipe, a heat exchanger and an air conditioner.

Background

At present, refrigerants adopted by an automobile air-conditioning system are mainly R134a and R1234yf, R134a has higher greenhouse effect potential, R1234yf has certain flammability, and with the increasing increase of global warming, all countries in the world adopt various measures to reduce greenhouse gas emission and protect the global environment. CO 2₂CO, the most promising new refrigerant, gradually walks into people's vision₂Has the advantages that: 1) natural working medium, no damage to environment, ODP (ODP) is 0, and GWP is 1; 2) large refrigerating capacity per unit volume, equipment with the same refrigerating capacity, CO₂The filling amount of the refrigerant air conditioner is less; 3) the viscosity is low, the fluidity and the heat transfer performance are excellent, and the pipeline pressure is reduced; 4) low cost and easy acquisition.

However, due to the difference in physical properties, CO is used₂The pressure of the air-conditioning system serving as the refrigerant is 5-6 times higher than that of the air-conditioning system using R134a or R1234yf as the refrigerant, which puts higher requirements on the pressure resistance of each part (especially a main pressure-bearing part, such as a collecting pipe and a heat exchange flat pipe) in the air-conditioning system.

In the prior art, the cross section of a refrigerant flow channel of the collecting pipe is of a roughly rectangular structure, and the shape structure ensures that the pressure resistance of the collecting pipe is low and cannot meet the requirement of CO₂Air conditioning systems that are refrigerants require a high pressure. Therefore, it is desirable to provide a collecting pipe to improve the pressure resistance of the collecting pipe so that the collecting pipe can be applied to a higher pressure refrigerant system application environment.

Disclosure of Invention

An object of the present invention is to provide a header having high pressure resistance.

In order to achieve the purpose, the invention adopts the following technical scheme:

a manifold, comprising:

the connecting plate extends along the axial direction of the collecting pipe;

the end plate extends along the axial direction of the collecting pipe and is buckled and connected with the connecting plate;

the baffle, the axial extension of pressure manifold is followed to the baffle, and the one end of baffle is connected in the connecting plate, and the other end is connected in the end plate, and the end plate of baffle both sides is the arc, and the top of arc equals the diameter of arc with the interval of connecting plate.

Optionally, the connecting plates on both sides of the partition board are provided with arc-shaped grooves, and the bottoms of the arc-shaped grooves and the tops of the arc-shaped plates are on the same vertical line on the same side of the partition board.

Optionally, the connecting plate is provided with a heat exchange tube connecting hole, the heat exchange tube connecting hole extends from one side of the end plate to the other side of the end plate and is used for fixing a heat exchange tube, and a refrigerant can flow between the heat exchange tube and the collecting pipe through the heat exchange tube connecting hole.

Optionally, the partition plate is provided with a refrigerant circulation hole.

Optionally, the refrigerant circulation hole is formed at the intersection of the partition plate and the heat exchange tube connection hole.

Optionally, flanges are arranged on two sides of the connecting plate, and the flanges are attached to the side walls of the end plates.

Alternatively, the connection plate is provided with a fixing groove into which one end of the partition is inserted.

Optionally, the connecting plate is the same thickness as the end plate.

Another object of the present invention is to provide a heat exchanger having high pressure resistance.

a heat exchanger comprises a heat exchange tube and the collecting pipe, wherein the heat exchange tube is fixed on a heat exchange tube connecting hole of the collecting pipe.

Still another object of the present invention is to provide an air conditioner having a heat exchanger with high pressure resistance.

an air conditioner comprises a condenser, a refrigerant circulating pipe and the heat exchanger, wherein the condenser is communicated with the heat exchanger through the refrigerant circulating pipe.

Has the advantages that:

the invention provides a collecting pipe, a connecting plate, end plates and partition plates of the collecting pipe extend along the axial direction of the collecting pipe, the end plates are buckled and connected with the connecting plate, one end of each partition plate is connected with the connecting plate, the other end of each partition plate is connected with the end plate, two small inner cavities are formed on two sides of each partition plate, the end plates on two sides of each partition plate are both arc-shaped plates, the distance between the top of each arc-shaped plate and the connecting plate is equal to the diameter of each arc-shaped plate, namely, the height and the width of each small inner cavity are equal, and the arc-shaped structures of the end plates are matched, so that the cross section of each small inner cavity is roughly of a semicircular structure, compared with the inner cavity with the cross section of each small inner cavity of a rectangular structure, the pressure resistance of the inner cavity of the semicircular structure is higher, therefore, the structure has the effect of improving the pressure resistance of the inner cavity, and further can effectively improve the pressure resistance of the collecting pipe.

The invention also provides a heat exchanger, which adopts the collecting pipe, so that the heat exchanger has higher pressure resistance.

The invention also provides an air conditioner, which adopts the heat exchanger, so that the heat exchanger of the air conditioner has higher pressure resistance.

Drawings

Fig. 1 is an assembled schematic perspective view of a header and a heat exchange tube according to the present embodiment;

FIG. 2 is an enlarged view of a portion of the header end face configuration of FIG. 1;

FIG. 3 is a partial cross-sectional view of the header of FIG. 1 with a partition wall having a coolant flow aperture;

FIG. 4 is a partial cross-sectional view of the header of FIG. 1 with a mounting groove formed in the connecting plate and a partition inserted into the mounting groove;

fig. 5 is an assembled schematic perspective view of the collecting pipe and the heat exchange pipe when the connecting plate of the collecting pipe provided in this embodiment is provided with an arc-shaped groove;

FIG. 6 is an enlarged partial view of the header of FIG. 5;

fig. 7 is a schematic structural diagram of the heat exchanger provided in this embodiment.

In the figure:

1. a first header; 2. a second header; 3. an inlet platen; 4. an outlet platen; 5. an end cap; 6. a heat exchange pipe; 7. a side plate; 8. a fin; 100. a connecting plate; 110. an arc-shaped slot; 120. a heat exchange tube connecting hole; 130. flanging; 200. an end plate; 300. a partition plate; 310. refrigerant circulation hole.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used based on the orientations or positional relationships shown in the drawings for convenience of description and simplicity of operation, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

The present embodiment provides a collecting pipe, which has a high pressure resistance, and further, the collecting pipe can be applied to a high refrigerant system application environment.

Specifically, as shown in fig. 1 and 2, the header includes a connecting plate 100, an end plate 200, and a partition plate 300, the connecting plate 100, the end plate 200, and the partition plate 300 all extend in the axial direction of the header, the end plate 200 is snap-fitted to the connecting plate 100, one end of the partition plate 300 is connected to the connecting plate 100, the other end is connected to the end plate 200, thereby forming two small inner cavities at two sides of the partition plate 300, and the end plates 200 at two sides of the partition plate 300 are arc-shaped plates, the distance between the top of the arc-shaped plate and the connecting plate 100 is equal to the diameter of the arc-shaped plate, i.e., the small cavities have the same height and width, and are matched with the arc-shaped structure of the end plate 200, so that the cross section of each small cavity is approximately in a semicircular structure, compared with the inner cavity with the rectangular cross section, the inner cavity with the semicircular structure has higher pressure resistance, therefore, the structure has the effect of improving the pressure resistance of the inner cavity, and the pressure resistance of the collecting pipe can be effectively improved.

It can be understood that the end plate 200 and the partition plate 300 may be an integrated structure or a split structure, and in the technical solution provided in this embodiment, the two integrated structures are an integrated structure, and compared with the split structure, the integrated structure has better pressure resistance. Optionally, the end plate 200 and the partition plate 300 are manufactured by an extrusion forming process or a plate stamping process, so that the manufacturing process is simple, the production efficiency can be effectively improved, and the production cost can be reduced.

In the technical scheme provided by this embodiment, the number of the partition plates 300 is one, in other embodiments, the number of the partition plates 300 may also be multiple, each end plate 200 has one end connected to the connecting plate 100, the other end connected to the end plate 200, and the end plates 200 on both sides of each partition plate 300 are all arc-shaped plates, the distance between the top of each arc-shaped plate and the connecting plate 100 is equal to the diameter of each arc-shaped plate, so that the inner cavity formed by buckling the connecting plate 100 and the end plates 200 is divided into a plurality of small inner cavities, and the cross section of each small inner cavity is of a substantially semicircular structure, so as to achieve the effect of improving the overall pressure resistance of the collecting pipe.

It can be understood that the cross-sectional areas of the small cavities at the two sides of the partition 300 may be equal or unequal, and it is within the protection scope of the present invention that any technical solution is adopted as long as the cross-section of the small cavity is substantially in a semicircular structure.

Alternatively, as shown in fig. 1 and fig. 2, the connection plate 100 is provided with a heat exchange tube connection hole 120, the heat exchange tube connection hole 120 extends from one side of the end plate 200 to the other side, and the heat exchange tube 6 can be fixedly connected to the header through the heat exchange tube connection hole 120, so as to realize circulation of a refrigerant between the header and the heat exchange tube 6.

Further, the number of the heat exchange tube connection holes 120 is plural, and the plural heat exchange tube connection holes are uniformly arranged on the connection plate 100 at intervals along the axial direction of the header so as to improve the refrigerant flow.

Optionally, as shown in fig. 1 to fig. 3, the partition plate 300 is provided with a refrigerant circulation hole 310, which is beneficial to the circulation of the refrigerant in the small inner cavities at the two sides of the partition plate 300, so as to equalize the pressure of the refrigerant borne by the small inner cavities at the two sides of the partition plate 300.

Preferably, as shown in fig. 1 to 3, the refrigerant flowing hole 310 is formed at the intersection of the partition 300 and the heat exchange tube connecting hole 120, so as to reduce the resistance to the refrigerant flowing in the header, and further reduce the pressure of the refrigerant received by the header. On the other hand, the refrigerant can be more uniformly distributed into the small inner cavities at the two sides of the partition plate 300, so as to balance the pressure of the refrigerant borne by the small inner cavities at the two sides of the partition plate 300.

Further, the number of the refrigerant circulation holes 310 is plural, and the plural refrigerant circulation holes 310 correspond to the plural heat exchange tube connection holes 120 one to one, so that an effect of further equalizing the pressure of the refrigerant borne by the small inner cavities at both sides of the partition plate 300 is achieved.

Optionally, as shown in fig. 2 and fig. 3, two sides of the connecting plate 100 are provided with flanges 130, and the flanges 130 are attached to the side walls of the end plate 200 to realize the connection between the connecting plate 100 and the end plate 200, so that the contact area between the connecting plate 100 and the end plate 200 can be increased, and the connection reliability between the connecting plate 100 and the end plate 200 can be further improved. Further, the flange 130 and the side wall of the end plate 200 can be fixedly connected by brazing, so that the connecting reliability is high, and the sealing performance and the pressure resistance are high.

Alternatively, as shown in fig. 4, the connection plate 100 is provided with a fixing groove, and one end of the partition 300 is inserted into the fixing groove to realize the connection of the partition 300 and the connection plate 100, and this structure can increase the contact area of the partition 300 and the connection plate 100, thereby improving the reliability of the connection therebetween.

Optionally, as shown in fig. 5 and fig. 6, the connecting plates 100 on both sides of the partition 300 are both provided with an arc-shaped groove 110, and at the same side of the partition 300, the bottom of the arc-shaped groove 110 and the top of the arc-shaped plate are on the same vertical line, so that the cross sections of the small inner cavities on both sides of the partition 300 are closer to a circular shape, and the effect of further improving the pressure resistance of the collecting pipe is achieved.

Optionally, the wall thickness of the connecting plate 100 is the same as or similar to that of the end plate 200, and the strength of the connecting plate 100 and the end plate 200 with the same or similar wall thickness is similar, so that the pressure uniformity of the collecting pipe can be improved. The wall thickness is preferably 1.5mm to 2.5mm, and may be 1.5mm, 2.0mm, or 2.5mm, for example, so that the connecting plate 100 and the end plate 200 have a certain structural strength and also have an effect of saving production materials. Of course, in other embodiments, the wall thickness may have other values depending on the application.

Optionally, the materials of the connecting plate 100, the end plate 200, and the partition plate 300 are all three series aluminum alloys or six series high strength aluminum alloys with magnesium content less than 0.5%, and the materials are selected to make the connecting plate 100, the end plate 200, and the partition plate 300 have high structural strength. Optionally, the connecting plate 100 is made by a plate stamping process, and a high-silicon solder layer with a concentration of 5% to 10% is attached to the wall surface of the connecting plate by brazing in a furnace, so as to further improve the structural strength of the connecting plate.

In one embodiment, the header further includes a partition plate (not shown), the partition plate extends from one side of the end plate 200 to the other side, one end of the partition plate is connected to the connecting plate 100, the other end of the partition plate is connected to the end plate 200, the partition plate divides the header into two parts in the axial direction of the header, and the header is used in cooperation with the header without the partition plate, so that the refrigerant can circulate back and forth in the same group of heat exchange tubes, the heat dissipation capacity can be improved, and the occupied area of the heat exchange tubes can be effectively saved.

The pressure resistance of semi-circular structure's inner chamber is compared with the inner chamber of transversal rectangular structure of personally submitting, semi-circular structure's inner chamber is higher, consequently, this structure setting has the effect that improves the inner chamber pressure resistance, and then can effectively improve the pressure resistance of pressure collecting pipe, make it can adapt to higher system operating pressure demand. On the other hand, the parts of the collecting pipe are machined and formed by adopting a conventional process manufacturing method, so that the requirements of mass assembly and integral brazing are met, the manufacturing manufacturability is good, and the collecting pipe is suitable for being widely popularized, produced and used.

The embodiment further provides a heat exchanger, which comprises a heat exchange tube 6 and the above collecting pipe, wherein the heat exchange tube 6 is fixed on the heat exchange tube connecting hole 120 of the collecting pipe. Specifically, as shown in fig. 7, the heat exchanger includes a header pipe (here, referred to as a first header pipe 1) provided with a partition plate and a header pipe (here, referred to as a second header pipe 2) not provided with a partition plate, end caps 5 are respectively provided at ends of the first header pipe 1 and the second header pipe 2, an inlet pressure plate 3 is provided at a refrigerant inlet of the first header pipe 1, an outlet pressure plate 4 is provided at a refrigerant outlet of the first header pipe 1, a plurality of heat exchange tubes 6 are provided, the plurality of heat exchange tubes 6 are in one-to-one correspondence with a plurality of heat exchange tube connection holes 120 of the header pipe, the plurality of heat exchange tubes 6 are provided between the first header pipe 1 and the second header pipe 2, the heat exchanger further includes an edge plate 7 and fins 8, the edge plate 7 is provided between the first header pipe 1 and the second header pipe 2 and is provided adjacent to the heat exchange tube 6 at the outermost side, the fins 8 are provided on the heat exchange tubes 6, and is arranged between the plurality of heat exchange tubes 6.

It can be understood that the heat exchange tube 6 can be a heat exchange flat tube, a heat exchange round tube, or other structures, which are not described herein.

When the air conditioning unit starts to work, a refrigerant enters the first collecting pipe 1 through the inlet pressing plate 3, then enters a part of heat exchange tubes 6 (the part is regarded as the upper half part of the heat exchange tubes 6 in the figure 7), exchanges heat with air on the side of the fins 8 for the first time, enters the second collecting pipe 2, then enters the other part of the heat exchange tubes 6 (the part is regarded as the lower half part of the heat exchange tubes 6 in the figure 7) from the second collecting pipe 2, exchanges heat with air on the side of the fins 8 for the second time, returns to the first collecting pipe 1, then is discharged out of the heat exchanger through the outlet pressing plate 4, and enters other parts of the air conditioning unit.

In the collecting pipe of the heat exchanger, the cross section of the inner cavity of the refrigerant circulation is of a roughly semicircular structure, the structure enables the inner cavity to have higher pressure resistance, the collecting pipe is enabled to have higher pressure resistance, the collecting pipe serves as a main pressure-bearing part of the heat exchanger, the pressure resistance of the heat exchanger is obviously improved due to the improvement of the pressure resistance, and the heat exchanger can meet the requirement of higher working pressure of a refrigerant system.

The embodiment also provides an air conditioner, the heat exchanger of the air conditioner has higher pressure resistance, and the refrigerant (such as CO) with higher circulating pressure is improved₂) The air conditioner can be applied to various fields such as automobile air conditioners.

Specifically, the air conditioner comprises a condenser, a refrigerant circulating pipe and the heat exchanger, wherein the condenser is communicated with the heat exchanger through the refrigerant circulating pipe.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, adaptations and substitutions will occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A manifold, comprising:

a connecting plate (100), wherein the connecting plate (100) extends along the axial direction of the collecting pipe;

the end plate (200) extends along the axial direction of the collecting pipe and is buckled and connected with the connecting plate (100);

the baffle (300), baffle (300) are followed the axial extension of pressure manifold, the one end of baffle (300) connect in connecting plate (100), the other end connect in end plate (200), just baffle (300) both sides end plate (200) are the arc, the top of arc with the interval of connecting plate (100) equals the diameter of arc.

2. The collecting main according to claim 1, wherein the connecting plates (100) on both sides of the partition (300) are provided with arc-shaped slots (110), and on the same side of the partition (300), the bottoms of the arc-shaped slots (110) and the tops of the arc-shaped plates are on the same vertical line.

3. Collecting main according to claim 1 or 2, wherein the connecting plate (100) is provided with a heat exchange tube connecting hole (120), the heat exchange tube connecting hole (120) extends from one side of the end plate (200) to the other side for fixing a heat exchange tube (6), and a refrigerant can flow between the heat exchange tube (6) and the collecting main through the heat exchange tube connecting hole (120).

4. Header according to claim 3, characterized in that said partition (300) is provided with refrigerant flow holes (310).

5. Header according to claim 4, wherein said refrigerant circulation hole (310) is opened at the intersection of said partition (300) and said heat exchange tube connection hole (120).

6. Header according to claim 1 or 2, characterized in that flanges (130) are provided on both sides of the connecting plate (100), and the flanges (130) are attached to the side walls of the end plate (200).

7. Header according to claim 1 or 2, characterized in that said connection plate (100) is provided with a fixing groove into which one end of said partition (300) is inserted.

8. Header according to claim 1 or 2, characterized in that said connection plate (100) has the same thickness as said end plate (200).

9. A heat exchanger, characterized by comprising a heat exchange tube (6) and a header according to any one of claims 1 to 8, said heat exchange tube (6) being fixed to a tube connection hole (120) of said header.

10. An air conditioner, comprising a condenser, a refrigerant circulation pipe, and the heat exchanger according to claim 9, wherein the condenser and the heat exchanger are communicated through the refrigerant circulation pipe.