Parallel flow micro-channel condenser

Abstract

The utility model provides a parallel flow micro-channel condenser which comprises a first collecting pipe, a second collecting pipe, a flat pipe set, a first partition piece and a second partition piece, wherein the first partition piece and the second partition piece are arranged between a liquid inlet and a liquid outlet which are formed in the same side of the first collecting pipe, and the first collecting pipe is divided into a first cavity, a second cavity and a third cavity through the first partition piece and the second partition piece; the second collecting pipe is provided with a third spacer, the third spacer is provided with a through hole, and the second collecting pipe is divided into a fourth chamber and a fifth chamber which are communicated with each other; the first collecting pipe and the second collecting pipe are correspondingly provided with a plurality of flat pipe holes, the flat pipes are connected with the corresponding flat pipe holes of the first collecting pipe and the second collecting pipe, the first spacer, the second spacer and the third spacer are respectively arranged between two adjacent flat pipes, and the first collecting pipe and the second collecting pipe are communicated with each other through the flat pipe group. According to the parallel flow micro-channel condenser provided by the utility model, the gas refrigerant and the liquid refrigerant in the condenser are separated, so that the heat exchange efficiency of the condenser can be improved.

Description

Technical Field

[0001] The utility model relates to the field of refrigeration and heat exchange equipment manufacturing, in particular to a parallel flow microchannel condenser. Background Art

[0002] In the home appliance thermal management system, the main functional components are the evaporator, condenser, compressor, throttling device, etc. The condenser is a key heat exchange component in the refrigeration system. The function of the condenser is to quickly condense the high-temperature refrigerant vapor into liquid and release heat to the outside world. According to the structural form of the condenser, it can be divided into various types, such as the parallel flow condenser. In a conventional parallel flow condenser, after the compressor exhaust flows into the condenser, the flow of the refrigerant and the number of flat tubes it flows through can only flow fixedly according to the partition. Therefore, the condensed liquid refrigerant in the condenser still needs to continue to flow with the gaseous refrigerant. The heat exchange capacity of the condenser cannot be fully utilized, and the heat exchange efficiency is low. Therefore, it is necessary to provide a high-efficiency parallel flow condenser to overcome the above problems. Utility Model Content

[0003] The purpose of the utility model is to provide a parallel flow microchannel condenser, which can separate the gaseous medium and liquid medium discharged from the compressor into the condenser, thereby solving the problem of low heat exchange efficiency of the condenser.

[0004] According to one aspect of the present invention, a parallel flow microchannel condenser is provided, comprising a first manifold, a second manifold, and a flat tube group; the first manifold comprises a liquid inlet and a liquid outlet arranged on the same side thereof; a first septum and a second septum are arranged between the liquid inlet and the liquid outlet, the first septum and the second septum divide the first manifold into a first chamber, a second chamber, and a third chamber arranged along the length thereof; the second manifold is arranged parallel to the first manifold, a third septum is arranged on the second manifold, a through hole is provided on the third septum, and the third septum divides the second manifold into a fourth chamber chamber, the fifth chamber, the fourth chamber, and the fifth chamber are connected through the through hole; a plurality of flat tube holes are provided on the other side of the first collecting pipe where the liquid inlet and the liquid outlet are located, and a plurality of flat tube holes are provided on the second collecting pipe corresponding to the first collecting pipe; the flat tubes connect the corresponding flat tube holes of the first collecting pipe and the second collecting pipe, and the first collecting pipe and the second collecting pipe are connected to each other through the flat tube group; the first spacer, the second spacer, and the third spacer are respectively provided between two adjacent flat tubes, and the third spacer is provided at the middle height between the first spacer and the second spacer corresponding to the second collecting pipe.

[0005] Preferably, the through hole is provided on a side of the third spacer away from where the flat tube is connected to the wall of the second collecting pipe, and at a distance halfway from the center of the third spacer.

[0006] Preferably, the diameter of the through hole is 0.5 mm to 1 mm.

[0007] Preferably, the liquid inlet is connected to the first chamber, and the liquid outlet is connected to the third chamber.

[0008] Preferably, it includes a first side plate and a second side plate, wherein the first side plate is arranged parallel to the top of the flat tube group to connect the first header and the second header, and the second side plate is arranged parallel to the bottom of the flat tube group to connect the first header and the second header.

[0009] Preferably, the first side plate and the second side plate are aluminum plates, and are not connected to the first header and the second header.

[0010] Preferably, both ends of the first header and the second header are sealed by plugs.

[0011] Preferably, grooves are respectively provided at both ends of the first collecting pipe and the second collecting pipe, and the grooves and the flat tube holes are located on the same side.

[0012] The utility model provides a parallel flow microchannel condenser, which is provided with a third diaphragm on the second manifold, and the third diaphragm has a through hole. When the refrigerant passes through the liquid inlet to the radiator, the liquefied refrigerant enters the fifth chamber through the through hole, and then flows out of the liquefied refrigerant from the liquid outlet through the flat tube provided between the fifth chamber and the third chamber, thereby improving the heat exchange efficiency and further improving the heat exchange efficiency of the condenser. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0014] Figure 1 This is a schematic diagram of a parallel flow microchannel condenser provided by the utility model.

[0015] Figure 2 A schematic diagram of the structure of a parallel flow microchannel condenser provided by the utility model Figure 1 .

[0016] Figure 3 A schematic diagram of the structure of a parallel flow microchannel condenser provided by the utility model Figure 2 .

[0017] Figure 4 A schematic diagram of the structure of a parallel flow microchannel condenser provided by the utility model Figure 3 .

[0018] Figure 5 This is a cross-sectional schematic diagram of the second manifold provided by the present invention.

[0019] Figure 6 This is a schematic cross-sectional view of the second manifold provided by the present invention along the AA' direction.

[0020] Description of Figure Numbers:

[0021] 100-condenser; 10-first manifold; 101-liquid inlet; 102-liquid outlet; 103-first septum; 104-second septum; 110-first chamber; 120-second chamber; 130-third chamber; 20-second manifold; 201-third septum; 202-through hole; 210-fourth chamber; 220-fifth chamber; 30-flat tube group; 301-flat tube hole; 302-flat tube; 303-first side plate; 304-second side plate; 40-plug; 401-groove. DETAILED DESCRIPTION

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] To simplify the drawings, only the parts relevant to the present invention are schematically shown in each figure. They do not represent the actual structure of the product. In addition, to simplify the drawings and facilitate understanding, in some figures, only one of the components with the same structure or function is schematically depicted or labeled. In this document, "one" not only means "only one" but also "more than one."

[0024] It should be further understood that the term "and / or" used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

[0025] It should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0026] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without inventive work.

[0028] See also Figures 1 to 6As shown, in one embodiment of the present invention, a parallel flow microchannel condenser comprises the following components: a first manifold 10, a second manifold 20, and a flat tube assembly 30 disposed between and connecting the first and second manifolds 10, 20. Heat dissipation fins (not shown) are also disposed between the flat tubes 302 of the flat tube assembly 30. A liquid inlet 101 and a liquid outlet 102, which connect to related equipment in the cooling system, are disposed on the first manifold 10 and located on the same side of the first manifold 10. A first septum 103 and a second septum 104 are disposed between the liquid inlet 101 and the liquid outlet 102 of the first manifold 10. These septums 103 and 104 divide the first manifold 10 into a first chamber 110, a second chamber 120, and a third chamber 130 along its length. The first, second, and third chambers 110, 120, 130 are not vertically connected. A second manifold 20 is disposed parallel to the first manifold 10 and is provided with a third septum 201. The third septum 201 is positioned midway between the first and second septums 103, 104 relative to the second manifold 20. The third septum 201 divides the second manifold 20 into a fourth chamber 210 and a fifth chamber 220 along its length. A through hole 202 is provided in the third septum 201, thereby providing communication between the fourth chamber 210 and the fifth chamber 220. The first manifold 10 is provided with a plurality of flat tube holes 301 on the side opposite the liquid inlet 101 and the liquid outlet 102. A corresponding number of flat tube holes 301 are also provided on the side of the second manifold 20 opposite the first manifold 10. Flat tubes 302 are positioned between the first and second manifolds 10, 20, connecting them. Furthermore, first, second, and third spacers 103, 104, and 201 are positioned between the two flat tubes 302, respectively, to facilitate the passageways on the flat tubes 302 connecting the first and second manifolds 10, 20. The first, second, and third spacers 103, 104, and 201 positioned on the first and second manifolds 10, 20 establish a three-pass condenser, meaning the refrigerant flows through three cycles between the first and second manifolds 10, 20. Specifically, the refrigerant flows from the liquid inlet 101 into the first chamber 110. The flat tube 302, located between the first chamber 110 and the fourth chamber 210, transfers the refrigerant from the first chamber 110 to the fourth chamber 210 (the first flow). At this point, the liquefied portion of the refrigerant flows, due to gravity, through the through-hole 202 provided in the third spacer 201 and into the fifth chamber 220. The flat tube 302, located between the fourth chamber 210 and the second chamber 120, transfers the refrigerant from the fourth chamber 210 to the second chamber 120. The refrigerant is then transferred from the flat tube 302, located between the second chamber 120 and the fifth chamber 220, to the fifth chamber 220 through the flow channel within the flat tube 302 (the second flow).After the first two steps of heat dissipation, the refrigerant gas is liquefied and accumulated in the fifth chamber 220. The refrigerant flows through the flat tube 302 between the fifth chamber 220 and the third chamber 130 and is transferred to the third chamber 130. The refrigerant liquid is discharged from the liquid outlet 102 of the third chamber 130.

[0029] To ensure smooth flow of liquefied refrigerant into the fifth chamber 220 along the through-hole 202, the through-hole 202 is positioned on the third septum 201, away from the side where the flat tube 302 connects to the wall of the second manifold 20, at a distance halfway from the center of the third septum 201. If the through-hole 202 is positioned in the center of the third septum 201, the liquefied refrigerant, due to its small size, could easily clog the through-hole 202, thereby impacting heat exchange efficiency. Preferably, the diameter of the through-hole 202 is greater than 0.5 mm and less than 1 mm. Since the condenser is brazed in a brazing furnace during processing, if the through-hole 202 is smaller than 0.5 mm in diameter, the brazing process could lead to accumulation of brazing material, easily clogging the through-hole 202 and impacting the flow of liquefied refrigerant from the fourth chamber 210 into the fifth chamber 220. If the through-hole 202 is larger than 1 mm in diameter, gaseous refrigerant could also flow into the fifth chamber 220 along with the liquefied refrigerant, significantly reducing the heat exchange efficiency of the condenser.

[0030] Specifically, the liquid inlet 101 is disposed in the first chamber 110 and communicates with the first chamber 110, and the liquid outlet 102 is disposed in the third chamber 130 and communicates with the third chamber 130. The refrigerant flows in through the liquid inlet 101, changes from gas to liquid after being processed by the condenser, and then flows out through the liquid outlet 102 communicated with the third chamber 130, thereby performing a heat exchange function.

[0031] To ensure structural stability, the condenser is equipped with a first side plate 303 and a second side plate 304. The first side plate 303 is positioned parallel to and above the flat tube assembly 30, connecting the first header 10 and the second header 20. The second side plate 304 is positioned parallel to and below the flat tube assembly 30, connecting the first header 10 and the second header 20. Both the first side plate 303 and the second side plate 304 are aluminum plates, and neither the first side plate 303 nor the second side plate 304 is connected to the first header 10 or the second header 20.

[0032] See also Figure 3 To seal the first and second manifolds 10, 20, plugs 40 are used at both ends to enhance airtightness. Grooves 401 are located on the same side as the flat tube holes 301. The purpose of the grooves 401 is to prevent excessive internal pressure from causing deformation of the tube walls of the first and second manifolds 10, 20, which could loosen the plugs 40 and affect product quality.

[0033] It will be apparent to those skilled in the art that various modifications and variations can be made to the exemplary embodiments described above without departing from the spirit and scope of the present invention. Therefore, it is intended that the present invention cover modifications and variations of the present invention that fall within the scope of the appended claims and their equivalents.

Claims

1. A parallel flow microchannel condenser, characterized in that: include: a first manifold, the first manifold comprising a liquid inlet and a liquid outlet disposed on the same side thereof; a first septum and a second septum disposed between the liquid inlet and the liquid outlet, the first septum and the second septum dividing the first manifold into a first chamber, a second chamber, and a third chamber disposed along the length thereof; a second manifold, the second manifold being arranged in parallel with the first manifold, the second manifold being provided with a third spacer, the third spacer being provided with a through hole, the third spacer dividing the second manifold into a fourth chamber and a fifth chamber, the fourth chamber and the fifth chamber being connected through the through hole; A flat tube group, wherein a plurality of flat tube holes are provided on the other side of the first manifold where the liquid inlet and liquid outlet are located, and a plurality of flat tube holes are provided on the second manifold corresponding to the first manifold; the flat tubes connect the corresponding flat tube holes of the first manifold and the second manifold, and the first manifold and the second manifold are interconnected through the flat tube group; the first spacer, the second spacer, and the third spacer are respectively provided between two adjacent flat tubes, and the third spacer is provided at a height midway between the first spacer and the second spacer corresponding to the second manifold.

2. A parallel flow microchannel condenser according to claim 1, characterized in that: The through hole is arranged on the side of the third spacer away from where the flat tube is connected to the wall of the second collecting pipe, and is halfway away from the center of the third spacer.

3. A parallel flow microchannel condenser according to claim 2, characterized in that: The diameter of the through hole is 0.5 mm to 1 mm.

4. A parallel flow microchannel condenser according to claim 3, characterized in that: The liquid inlet is connected to the first chamber, and the liquid outlet is connected to the third chamber.

5. The parallel flow microchannel condenser according to claim 4, characterized in that: It includes a first side plate and a second side plate, wherein the first side plate is arranged parallel to the top of the flat tube group to connect the first header and the second header, and the second side plate is arranged parallel to the bottom of the flat tube group to connect the first header and the second header.

6. The parallel flow microchannel condenser according to claim 5, characterized in that: The first side plate and the second side plate are aluminum plates and are not connected to the first header and the second header.

7. A parallel flow microchannel condenser according to claim 6, characterized in that: Both ends of the first header and the second header are sealed by plugs.

8. The parallel flow microchannel condenser according to claim 7, characterized in that: Grooves are respectively provided at both ends of the first collecting pipe and the second collecting pipe, and the grooves and the flat tube holes are located on the same side.

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