Brazing refrigerant radiator

Abstract

The present invention relates to the technical field of heat dissipation devices, and in particular to a brazed refrigerant radiator, including an evaporator, a condenser, a steam pipeline and a liquid return pipeline, wherein an evaporation chamber is provided in the evaporator, and a condensation chamber is provided in the condenser; the upper end of the condensation chamber is connected to the evaporation chamber through a steam pipeline, and the lower end thereof is connected to the evaporation chamber through a liquid return pipeline to form a circulation loop, wherein a refrigerant is provided in the circulation loop; the evaporator is provided with a channel heat sink corresponding to the evaporation chamber, and the channel heat sink divides the evaporation chamber into a plurality of channels. The present invention utilizes the principle of heat absorption when the refrigerant is converted from liquid to vapor, and the refrigerant in the evaporator then absorbs the heat from the heating electronic components and is heated and vaporized to form steam, which moves to the condensation chamber through the steam pipeline, is cooled in the condensation chamber, liquefied to form liquid, and returns to the evaporation chamber through the liquid return pipeline, and the circulation is repeated in this way to achieve the purpose of heat dissipation; and a heat dissipation structure is provided in the evaporation chamber to improve the heat dissipation performance.

Description

Technical Field

[0001] The invention relates to the technical field of heat dissipation devices, in particular to a brazed refrigerant radiator. Background Art

[0002] Traditional air-cooled heat sinks are mainly made of copper or aluminum materials. The heat sink is constructed of a substrate and fins. The heat sink substrate is close to the heat-generating electronic components to absorb heat, and then the heat is diffused on the substrate. The heat is further transferred to the fins, and finally the fan drives the air to flow through the fins for thermal convection to dissipate the heat. The heat dissipation performance of the heat sink depends on two factors: first, whether the heat in the local area of ​​the heat-generating electronic components can be well diffused on the substrate and efficiently conducted to the fins; second, whether the fins have a good convection heat transfer coefficient.

[0003] Conventional copper or aluminum heat sinks have low thermal conductivity, so the heat diffusion of the heat sink substrate is limited. When the heat flux density in the bonding area of ​​the heat-generating electronic component is large, the heat is not easy to diffuse quickly. In addition, the heat diffusion on the substrate is uneven, which makes the convection heat transfer coefficient of the fins low. The heat-generating electronic component will produce a large temperature rise, affecting its operation. Summary of the invention

[0004] In order to solve the above problems, the present invention provides a brazed refrigerant radiator, which utilizes the principle of heat absorption by converting refrigerant liquid into vapor, can circulate heat, has lower thermal resistance and better heat dissipation performance.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is to provide a brazed refrigerant radiator, including a fan, an evaporator for dissipating heat from heat-generating electronic components, a condenser, a steam pipeline and a liquid return pipeline, wherein an evaporation chamber is provided in the evaporator, and a condensation chamber is provided in the condenser; the condenser is vertically inclined or vertically arranged, the fan is installed on the side wall of the condenser, and the evaporator is arranged below the condenser; the upper end of the condensation chamber is connected to the evaporation chamber through a steam pipeline, and the lower end thereof is connected to the evaporation chamber through the liquid return pipeline to form a circulation loop, in which a refrigerant is arranged; the evaporator is provided with a channel heat sink corresponding to the evaporation chamber, and the channel heat sink divides the evaporation chamber into a plurality of channels.

[0006] As a preferred solution, the condenser includes a plurality of parallel flat tubes and transversely arranged upper and lower tubes. The flat tubes are arranged vertically, with their upper ends connected to the upper tubes and their lower ends connected to the lower tubes. The upper tubes are provided with a filling port.

[0007] As a preferred solution, the condenser further comprises a plurality of groups of heat dissipation fins, a group of heat dissipation fins is arranged between adjacent flat tubes, and the heat dissipation fins of the same group are arranged in a "H"-shaped cycle.

[0008] As a preferred solution, the same group of heat dissipation fins includes transverse fins and vertical fins, the two ends of the transverse fins are respectively connected to two adjacent flat tubes, and the two ends of the vertical fins are respectively connected to two adjacent transverse fins; one vertical fin is attached to one flat tube, and the next vertical fin is attached to another flat tube.

[0009] As a preferred embodiment, the evaporator includes a base plate, a base frame and a cover plate which are stacked and connected in sequence; the base frame is a frame structure having a plurality of openings passing through, each opening is covered with a cover plate, and the base plate and the cover plate are sealed with the opening of the base frame to form the evaporation chamber.

[0010] As a preferred solution, the cover plate is provided with a medium outlet corresponding to the evaporation chamber, one end of the evaporation pipeline is connected to the medium outlet, and the other end thereof is connected to the upper tube; a medium inlet is provided on one side of the base frame, and the medium inlet is connected to the opening; one end of the liquid reflux pipeline is connected to the medium inlet, and the other end thereof is connected to the lower tube.

[0011] As a preferred solution, the substrate is provided with a group of channel heat sinks corresponding to each opening, and a plurality of mutually parallel channel heat sinks form a channel; the channel heat sinks are perpendicular to the substrate and extend into the opening of the base frame.

[0012] As a preferred solution, a herringbone-shaped steam confluence groove is provided on one side of the cover plate connected to the base frame.

[0013] As a preferred embodiment, the brazed refrigerant radiator also includes a mounting frame, a first mounting portion and a second mounting portion connected to each other, and an angle at a connection between the first mounting portion and the second mounting portion is 30 to 90 degrees; the first mounting portion is mounted on the condenser, and the second mounting portion is connected to the evaporator.

[0014] As a preferred solution, the fan is installed on the first installation part, and the first installation part is provided with an air outlet corresponding to the fan.

[0015] The beneficial effects of the present invention are:

[0016] Compared with the traditional air-cooled radiator, the internal working medium of the radiator of the present invention is refrigerant, which will not pollute the heat-generating electronic components even if it leaks, and is safe and reliable.

[0017] The present invention utilizes the principle of heat absorption when the refrigerant is converted from liquid to vapor. The refrigerant in the evaporator then absorbs heat from the heat-generating electronic components and vaporizes to form steam. The steam moves to the condensing chamber through the steam pipeline. In the condensing chamber, the refrigerant is cooled and liquefied to form liquid, which returns to the evaporating chamber through the liquid return pipeline. This reciprocating cycle is repeated to achieve the purpose of heat dissipation.

[0018] Since the evaporation chamber is provided with a heat dissipation structure, specifically, the evaporation chamber is divided into several channels through channel heat sinks, the heat dissipation area of ​​the evaporator is increased, and the contact area between the evaporation chamber and the refrigerant is increased. The heat diffusion performance of the entire radiator is good, the thermal resistance is lower, and the heat dissipation performance is better. When used under the same calorific value conditions, the radiator is smaller in size, and the corresponding industrial equipment can be designed more compactly. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the brazed refrigerant radiator of the present invention.

[0020] Figure 2 yes Figure 1 Schematic diagram of the exploded structure of the brazed refrigerant radiator.

[0021] Figure 3 It is a working principle diagram of the brazed refrigerant radiator of the present invention.

[0022] Figure 4 It is a partial structural schematic diagram of the condenser of the present invention.

[0023] Figure 5 It is a schematic diagram of the exploded structure of the evaporator of the present invention.

[0024] Explanation of the accompanying drawings: 10-mounting frame; 11-first mounting part; 12-second mounting part; 13-blowing port; 20-fan; 30-evaporator; 31-evaporation chamber; 32-base plate; 33-base frame; 331-opening; 332-medium inlet; 34-cover plate; 341-medium outlet; 342-steam confluence groove; 35-channel heat sink; 351-groove; 40-condenser; 41-condensation chamber; 42-flat tube; 43-upper tube; 44-lower tube; 45-heat dissipation fin; 451-horizontal fin; 452-vertical fin; 46-filling port; 50-steam pipeline; 60-liquid return pipeline; 70-heat-generating electronic component. DETAILED DESCRIPTION

[0025] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection through an intermediate medium, or the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] See also Figures 1 to 5 As shown, the present invention relates to a brazed refrigerant radiator, comprising an evaporator 30, a condenser 40, a steam pipeline 50 and a liquid return pipeline 60 for dissipating heat from a heat-generating electronic component 70, wherein an evaporation chamber 31 is provided in the evaporator 30, and a condensation chamber 41 is provided in the condenser 40; the condenser 40 is vertically inclined or vertically arranged, a fan 20 is installed on the side wall of the condenser 40, the evaporator 30 is arranged below the condenser 40, the evaporator 30 is installed on the heat-generating electronic component 70, and a mounting frame 10 is connected to the condenser 40. The upper end of the condensing chamber 41 is connected to the evaporating chamber 31 through the steam pipe 50, and the lower end thereof is connected to the evaporating chamber 31 through the liquid return pipe 60 to form a circulation loop, in which a refrigerant is arranged; the refrigerant in the evaporator 30 then absorbs the heat from the heating electronic component 70 and is vaporized by the heat to form steam, and moves to the condensing chamber 41 through the steam pipe 50, in which the refrigerant is cooled and liquefied to form liquid, and returns to the evaporating chamber 31 through the liquid return pipe 60.

[0029] The evaporator 30 is provided with a channel heat sink 35 corresponding to the evaporation chamber 31 , and the channel heat sink 35 divides the evaporation chamber 31 into a plurality of channels.

[0030] Compared with the traditional air-cooled radiator, the radiator of the present invention has a heat dissipation structure in the evaporation chamber 31, specifically, the evaporation chamber 31 is divided into a number of channels by the channel heat sink 35, which increases the heat dissipation area of ​​the evaporator 30, increases the contact area between the evaporation chamber 31 and the refrigerant, and the whole radiator has good thermal diffusion performance, lower thermal resistance, and better heat dissipation performance. When used under the same calorific value conditions, the radiator is smaller in size, and the corresponding industrial equipment can be designed more compactly. Since the working fluid inside the evaporator 30 is the refrigerant, even if it leaks, it will not contaminate the heating electronic components 70, which is safe and reliable.

[0031] like Figure 4 As shown, the condenser 40 includes a plurality of parallel flat tubes 42, a transversely arranged upper tube 43 and a lower tube 44, and a plurality of groups of heat dissipation fins 45. The flat tubes 42, the upper tubes 43, the lower tubes 44 and the heat dissipation fins 45 are connected as a whole by brazing. The flat tubes 42 are arranged vertically, and the upper ends thereof are connected to the upper tubes 43, and the lower ends thereof are connected to the lower tubes 44. The upper tubes 43 are provided with a filling port 46, through which refrigerant can be added to the condenser 40. There are provided between adjacent flat tubes 42. There is a group of heat dissipation fins 45, and the same group of heat dissipation fins 45 is arranged in a "J" shape cycle. Specifically: the same group of heat dissipation fins 45 includes a horizontal fin 451 and a vertical fin 452, and the two ends of the horizontal fin 451 are respectively connected to two adjacent flat tubes 42, and the two ends of the vertical fin 452 are respectively connected to two adjacent horizontal fins 451; one vertical fin 452 is attached to one flat tube 42, and the next vertical fin 452 is attached to another flat tube 42. The layout design of the heat dissipation fins 45 increases the contact area with the flat tube 42, improves the heat dissipation area, and accelerates the heat dissipation.

[0032] like Figure 5 As shown, the evaporator 30 includes a base plate 32, a base frame 33 and a cover plate 34 which are stacked and connected in sequence; the base frame 33 is a frame structure having a plurality of openings 331 passing through, each opening 331 correspondingly covered with a cover plate 34, the base plate 32 and the cover plate 34 are brazed and sealed with the base frame 33 to form an evaporation chamber 31; the cover plate 34 is provided with a medium outlet 341 corresponding to the evaporation chamber 31, one end of the evaporation pipeline is connected to the medium outlet 341, and the other end thereof is connected to the upper tube 43; a medium inlet 332 is provided on one side of the base frame 33, and the medium inlet 332 is connected to the opening 331; one end of the liquid return pipeline 60 is connected to the medium inlet 332, and the other end thereof is connected to the lower tube 44. The refrigerant is heated and evaporated in the evaporation chamber 31 to form a vapor state, and enters the evaporation pipeline through the medium outlet 341, and finally, after the refrigerant is liquefied, it returns to the evaporation chamber 31 again through the liquid return pipeline 60 from the medium inlet 332.

[0033] In this embodiment, the number of the openings 331 is three, the number of the corresponding cover plates 34 is three, and the evaporation pipeline and the liquid return pipeline 60 are also three-tube pipelines.

[0034] The base plate 32 is provided with three groups of channel heat sinks 35 corresponding to the openings 331. Each group of channel heat sinks 35 is perpendicular to the base plate 32 by brazing and extends into the openings 331 of the base frame 33. A plurality of mutually parallel channel heat sinks 35 divide the evaporation chamber 31 into a plurality of channels. The design of the channel heat sink 35 accelerates the heat conduction of the base plate 32 to the heat-generating electronic components 70, and increases the contact area with the refrigerant, thereby improving the heat dissipation performance.

[0035] Compared with the traditional radiator, the channel fins 35 and the cover plate 34 of the base plate 32 of the evaporator 30 are both provided with a cavity structure, and a fishbone-shaped steam confluence groove 342 is provided on the side where the cover plate 34 is connected to the base frame 33, and a concave groove 351 is formed at the top of each group of channel fins 35 corresponding to the steam confluence groove 342. In this embodiment, the channel fins 35 extend into the opening 331 of the base frame 33, and the end surface of the highest end of the channel fins 35 is flush with the upper end surface of the base frame 33, while the end surface of the lowest end of the cover plate 34 is in contact with the end surface of the highest end of the channel fins 35, and the groove 351 at the top of the channel fins 35 and the steam confluence groove 342 form a cavity, which facilitates the evaporation of the refrigerant, thereby greatly improving the heat diffusion capacity of the radiator.

[0036] Under the condition that the heat dissipation requirements are met, the brazed refrigerant radiator also includes a mounting frame 10 and a fan 20. The speed of the fan 20 can be reduced accordingly to save electricity and reduce equipment noise. The mounting frame 10 includes a first mounting portion 11 and a second mounting portion 12 connected to each other. The angle at the connection between the first mounting portion 11 and the second mounting portion 12 is 30 degrees to 90 degrees; the first mounting portion 11 is wrapped around both sides of the flat tube 42, and the second mounting portion 12 is fixedly connected to the base plate 32; further, the fan 20 is installed on the first mounting portion 11, and the first mounting portion 11 is provided with a blowing port 13 corresponding to the fan 20. The mounting frame 10 can connect and fix the evaporator 30 and the condenser 40 to ensure that the condenser 40 and the evaporator 30 always maintain a vertical direction, and the evaporator 30 is always connected to the lower end of the condenser 40. Following the principle of gravity, the refrigerant cooled and liquefied to form a liquid in the condensation chamber 41 will flow into the evaporation chamber 31 connected to the lower end of the condenser 40.

[0037] In this embodiment, the number of fans 20 is three, and the number can also be adjusted according to usage, which will not be described in detail here.

[0038] The above implementation modes are merely descriptions of the preferred implementation modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary engineering and technical personnel in the field shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A brazed refrigerant radiator, Features: The invention comprises an evaporator, a condenser, a steam pipeline and a liquid return pipeline for dissipating heat from a heat-generating electronic component, wherein an evaporation chamber is provided in the evaporator, and a condensation chamber is provided in the condenser; the condenser is vertically inclined or vertically arranged, and the evaporator is arranged below the condenser; the upper end of the condensation chamber is connected to the evaporation chamber through a steam pipeline, and the lower end thereof is connected to the evaporation chamber through the liquid return pipeline to form a circulation loop, in which a refrigerant is arranged; the evaporator is provided with a channel heat sink corresponding to the evaporation chamber, and the channel heat sink divides the evaporation chamber into a plurality of channels; the evaporator comprises a substrate, a base frame and a cover plate which are stacked and connected in sequence; the base frame is a frame structure having a plurality of openings passing through, and each opening is covered with a cover plate corresponding to the opening, and the substrate and the cover plate are sealed with the opening of the base frame to form the evaporation chamber; the cover plate is provided with a medium outlet corresponding to the evaporation chamber, one end of the steam pipeline is connected to the medium outlet, and the other end of the steam pipeline is connected to the upper tube; a medium inlet is provided on one side of the base frame, and the medium outlet is connected to the upper tube; The inlet is connected to the opening; one end of the liquid return pipeline is connected to the medium inlet, and the other end of the liquid return pipeline is connected to the lower tube; the condenser includes a plurality of parallel flat tubes and a transversely arranged upper tube and lower tube, the flat tube is vertically arranged, the upper end thereof is connected to the upper tube, and the lower end thereof is connected to the lower tube; the upper tube is provided with a filling port; the condenser also includes a plurality of groups of heat dissipation fins, a group of heat dissipation fins is arranged between adjacent flat tubes, and the same group of heat dissipation fins is arranged in a "J" shape in a cycle; the same group of heat dissipation fins includes The invention comprises transverse fins and vertical fins, wherein the two ends of the transverse fins are respectively connected to two adjacent flat tubes, and the two ends of the vertical fins are respectively connected to two adjacent transverse fins; one vertical fin is attached to one flat tube, and the next vertical fin is attached to another flat tube; a group of channel heat sinks are provided in correspondence with each opening of the base plate, and a plurality of channel heat sinks parallel to each other form a channel; the channel heat sinks are perpendicular to the base plate and extend into the opening of the base frame; a herringbone-shaped steam confluence groove is provided on one side of the cover plate connected to the base frame.

2. The brazed refrigerant radiator according to claim 1, Features: The brazed refrigerant radiator also includes a mounting frame, which includes a first mounting portion and a second mounting portion connected to each other, and the angle at the connection between the first mounting portion and the second mounting portion is 30 degrees to 90 degrees; the first mounting portion is installed on the condenser, and the second mounting portion is connected to the evaporator.

3. The brazed refrigerant radiator according to claim 2, Features: The brazing refrigerant radiator further includes a fan, which is mounted on the first mounting portion, and the first mounting portion is provided with an air outlet corresponding to the fan.

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