Heat dissipation device and heat exchange equipment

Abstract

The utility model provides a heat dissipation device which comprises a packing layer, a spraying piece arranged above the packing layer and used for spraying water towards the packing layer, a fin coil pipe arranged above the spraying piece, an axial flow fan arranged above the fin coil pipe, an air inlet channel and a water outlet channel in the vertical direction. The air inlet channel is located below the packing layer, and projections of the fin coil pipe and the spraying piece fall into the packing layer. According to the heat dissipation device and the heat exchange equipment, the spraying piece is arranged to spray water to the packing layer and is matched with the axial flow fan to dissipate heat, the heat dissipation effect can be improved, residual scale on the surface of the finned coil is not prone to being caused, and filth blockage is not prone to being caused.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of heat sink and heat exchange equipment. BACKGROUND

[0002] The heat exchange equipment applied to data center, as the power density of cabinet is more and more big, it needs heat exchange quantity also more and more big, the specification of supporting heat dissipation equipment becomes big, quantity also more and more.

[0003] Meanwhile in order to reduce energy consumption, low carbon environmental protection, in the use of natural cold source this becomes more urgent. Using natural cooling wind to cool condensing heat exchange becomes a major trend. But due to the different climate environment in each place, and global greenhouse effect is getting serious. In recent years, high temperature climate in all over the world occurs frequently and maintains time more and more long, which leads to using cooling wind to dissipate heat becomes more and more difficult. It becomes a technical difficulty to solve the condition that environment temperature is high, and still can use natural wind to dissipate heat.

[0004] In addition, as the power density of cabinet is more and more big, heat removal quantity demand also more and more big. The requirement to heat exchange capacity of heat exchange equipment is also more and more big. Domestic plate car transportation requires width within 3m, transportation height within 4m, otherwise it will be as super high or super wide piece. This will increase transportation cost. How to make the heat exchange quantity of equipment large in limited height and width is a problem to be solved. The common practice in the industry is to lengthen the equipment, but lengthening the pipeline will increase the flow resistance of the cooling medium in the pipeline of the equipment, which will be not conducive to the flow and heat exchange of the medium.

[0005] For example, 55% glycol water solution, when flowing in 15.88 pipeline at 2.1m / s flow rate, the flow resistance of 25m long pipeline reaches nearly 2bar. This is not conducive to the long-term stable operation of water pump, and will cause the power consumption of water pump to increase.

[0006] Therefore, it is necessary to improve the existing heat dissipation device to solve the above problems. INVENTION CONTENTS

[0007] The utility model discloses a kind of heat dissipation devices, to solve the problem of low air cooling heat dissipation efficiency of existing radiator.

[0008] To achieve the above object, the utility model provides a kind of heat dissipation device, the heat dissipation device includes filler layer, is set to the filler layer above and is used to spray water towards filler layer spray piece, be set to the spray piece above finned coil, be set to the finned coil above axial fan, air inlet passage, in vertical direction, the air inlet passage is located below the filler layer, the projection of finned coil and spray piece all falls into filler layer.

[0009] As a further improvement of the present application, the filler layer is formed with a zigzag corrugated surface to form a water film.

[0010] As a further improvement of the present application, the heat dissipation device further comprises a water collecting tank, which is arranged below the filler layer and between the air inlet channel and the filler layer in the vertical direction.

[0011] As a further improvement of the present application, the spraying member comprises a plurality of water distribution pipes and a plurality of spraying heads arranged on each water distribution pipe.

[0012] As a further improvement of the present application, the heat dissipation device further comprises a water pump communicated with the water collecting tank and a main water pipe communicated between the water pump and the water distribution pipes.

[0013] As a further improvement of the present application, the heat dissipation device further comprises a heat dissipation box, the filler layer, the spraying member and the finned coil pipe are arranged in the heat dissipation box, the axial flow fan is arranged on the top of the heat dissipation box, and the air inlet channel is arranged on the heat dissipation box.

[0014] As a further improvement of the present application, the heat dissipation device further comprises an air inlet grille arranged on the heat dissipation box to cover the air inlet channel.

[0015] As a further improvement of the present application, the heat dissipation device further comprises an air inlet grille arranged on the heat dissipation box to cover the air inlet channel.

[0016] As a further improvement of the present application, the heat dissipation device further comprises an air inlet grille arranged on the heat dissipation box to cover the air inlet channel.

[0017] As a further improvement of the present application, the spraying member and the finned coil pipe are arranged in the vertical and horizontal directions.

[0018] The present application further provides a heat exchange device comprising at least two heat dissipation devices as described above, and the finned coil pipes of the at least two heat dissipation devices are connected in parallel.

[0019] The heat dissipation device and the heat exchange device of the present application can improve the heat dissipation effect by spraying water to the filler layer through the spraying member and cooperating with the axial flow fan, and the finned coil pipe surface is not easy to be covered with water scale and dirt. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1It is the front structure schematic view of the heat exchange equipment of the utility model;

[0021] Figure 2 It is the side structure schematic view of the heat exchange equipment of the utility model;

[0022] Figure 3 It is the front cross section structure schematic view of the heat exchange equipment of the utility model;

[0023] Figure 4 It is the side cross section structure schematic view of the heat exchange equipment of the utility model;

[0024] Figure 5 It is the structure schematic view of the spraying piece of the heat dissipation device of the utility model;

[0025] Figure 6 It is another angle structure schematic view of the spraying piece of the heat dissipation device of the utility model. DETAILED DESCRIPTION

[0026] The technical solutions of the utility model will be described clearly and completely below in combination with the drawings. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without making creative efforts belong to the protection scope of the utility model.

[0027] In the description of the utility model, it needs to be explained that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is the orientation or position relationship based on the drawings shown, and is only for the convenience of describing the utility model and simplifying the description, and cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0028] In the description of the utility model, it needs to be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or the communication inside two elements. For the ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances. In addition, the technical features involved in different embodiments of the utility model described below can be combined with each other as long as they do not conflict with each other.

[0029] AsFigures 1 to 6 As shown, the heat exchange equipment 200 of the utility model includes at least two heat dissipation devices 100, and the at least two heat dissipation devices 100 are connected in parallel along the length direction, thereby realizing the design of large heat exchange of single equipment.

[0030] The heat dissipation device 100 includes a heat dissipation box 1, a filler layer 2, a spraying piece 3 arranged above the filler layer 2 and used for spraying water towards the filler layer 2, a finned coil 4 arranged above the spraying piece 3, an axial flow fan 5 arranged above the finned coil 4, an air inlet channel 6, a water collecting tank 7, a water pump 8 communicated with the water collecting tank 7, a main water pipe 9, an air inlet grille 10 installed on the heat dissipation box 1 and covering the air inlet channel 6, a fluid inlet 101 communicated with the finned coil 4, an inlet temperature sensor 102 arranged at the fluid inlet 101, a fluid outlet 103 communicated with the finned coil 4, an outlet temperature sensor 104 arranged at the fluid outlet 103, and a control unit.

[0031] The filler layer 2, the spraying piece 3 and the finned coil 4 are all arranged in the heat dissipation box 1, the axial flow fan 5 is arranged at the top of the heat dissipation box 1, and the air inlet channel 6 is arranged on the heat dissipation box 1.

[0032] In the embodiment, air enters the heat dissipation box 1 from the air inlet channel 6, carries away the heat on the finned coil 4, and is discharged through the axial flow fan 5. In the embodiment, the air inlet channel 6 is arranged around the heat dissipation box 1 and is located below the heat dissipation box 1.

[0033] The water collecting tank 7 is arranged below the filler layer 2, and in the vertical direction, the air inlet channel 6 is located between the water collecting tank 7 and the filler layer 2. In the embodiment, the water collecting tank 7 is arranged at the bottom of the heat dissipation box 1 and is used for storing cooling water.

[0034] The air inlet grille 10 is a plastic component, and the air inlet grille 10 can change the air inlet direction, so that air can enter the heat dissipation box 1 from the air inlet grille 10 more evenly, and the air inlet grille 10 can effectively block sunlight from directly entering the water collecting tank 7 and prevent algae from growing in the water collecting tank 7.

[0035] The heat dissipation box 1 is provided with an inspection door 11, and in the vertical direction, the inspection door 11 is located above the filler layer 2. The inspection door 11 facilitates users to open and clean sundries in the heat dissipation box 1 or to maintain and replace part of the structure.

[0036] Air enters the heat dissipation box 1 from the air inlet grille 10, carries away the heat on the finned coil 4, and is discharged upwards from the axial flow fan 5 to the heat dissipation box 1.

[0037] The medium fluid enters the device from the fluid inlet 101, and the inlet temperature sensor 102 detects the temperature of the medium fluid when it enters. After sufficient heat exchange with the wind, the medium fluid flows out from the fluid outlet 103, and the outlet temperature sensor 104 detects the temperature of the medium fluid when it flows out. The inlet temperature sensor 102 is only for display, and the outlet temperature sensor 104 detects the value as the basis for the speed of the axial flow fan 5. When the outlet temperature is higher than the preset value, the speed of the axial flow fan 5 increases. When the outlet temperature is lower than the preset value, the speed of the axial flow fan 5 decreases. In this way, the outlet temperature control can be realized, and the energy consumption of the fan can be reduced.

[0038] The outlet temperature sensor 104 and the axial flow fan 5 are electrically connected to the control unit, and the signal reception of the temperature, the comparison of the temperature with the preset value, and the speed control of the axial flow fan 5 are all controlled by the control unit.

[0039] In this embodiment, by arranging the filler layer 2 and the spray member 3, the humidity of the air blown to the finned coil 4 is increased, so as to take away more heat.

[0040] The filler layer 2 is formed with a zigzag corrugated surface to form a water film, thereby increasing the contact heat exchange area between the water and the air, and the water film is in full contact with the passing air, thereby enhancing the evaporation of the water and absorbing heat, reducing the temperature of the hot air. Under reasonable design, the temperature of the air can be reduced close to the wet-bulb temperature of the air.

[0041] In the vertical direction, the air inlet channel 6 is located below the filler layer 2, and the projections of the finned coil 4 and the spray member 3 fall into the filler layer 2. That is, after the air enters the heat dissipation box body 1, it first passes through the filler layer 2, fully contacts with the water, and then blows to the finned coil 4.

[0042] The spray member 3 includes a plurality of water distribution pipes 31 and a plurality of spray heads 32 arranged on each water distribution pipe 31. The main water pipe 9 connects the water pump 8 and the water distribution pipe 31. In this embodiment, the water pump 8 is a high-pressure water pump 8, which pumps the water in the water collecting tank 7 to the main water pipe 9, and further distributes the water to the water distribution pipe 31, and sprays the water from the spray head 32. In order to improve the spraying effect, in this embodiment, the spray head 32 is a diffuser type nozzle, so as to spray the water more uniformly.

[0043] In this embodiment, two groups of spray nozzles 3 and finned coils 4 are arranged in the heat dissipation box 1, and the spray nozzles 3 and the finned coils 4 are arranged obliquely in the vertical and horizontal directions. As viewed in the cross section, the two groups of spray nozzles 3 and finned coils 4 are V-shaped. Correspondingly, the finned coils 4 in this embodiment are arranged above the spray nozzles 3, which does not mean that any position of the finned coils 4 is above any position of the spray nozzles 3, but means that the corresponding position of the finned coils 4 corresponding to any point on the horizontal plane is higher than the corresponding position of the spray nozzles 3. In this way, water can be prevented from being sprayed onto the finned coils 4, and thus the surface of the finned coils 4 can be prevented from being covered with scale due to evaporation of water, so that the finned coils 4 are less likely to be dirty and blocked.

[0044] Preferably, the spray nozzles 3 are arranged in parallel with the adjacent finned coils 4, so as to fully utilize the space below the finned coils 4.

[0045] Each spray nozzle 3 is provided with a plurality of water distribution pipes 31 arranged in parallel and spaced apart in the vertical and horizontal directions, each water distribution pipe 31 is provided with a plurality of spray heads 32, and the spray heads 32 of each water distribution pipe 31 are arranged spaced apart and uniformly in the length direction, so that each spray head 32 is arranged staggered, the water inlet pressure, the spraying angle and the spraying range of the spray head 32 are controlled, and thus water can be more uniformly sprayed onto the filler layer 2.

[0046] After the air enters the heat dissipation box 1 through the air inlet grid 10 arranged around the equipment, the air inlet channel 6, the filler layer 2 and the spray nozzles 3, the air contacts the finned coils 4, and finally is discharged from the axial flow fan 5. The design of the finned coils 4 needs to be controlled so that the total width of the heat dissipation device 100 is within 3m.

[0047] When the ambient temperature rises (exceeds the pre-designed ambient dry-bulb temperature), the high-temperature natural ambient air cannot meet the heat dissipation requirement, at this time, the water pump 8 is started to pump the water in the water collecting tank 7 into the spray nozzles 3, the water in the spray nozzles 3 is sprayed downward, the water passes through the filler layer 2 and returns to the water collecting tank 7, in this process, the water is in full contact with the air, especially in the filler layer 2.

[0048] When a larger heat dissipation is required, at least two heat dissipation devices 100 can be arranged, and the finned coil pipes 4 of the at least two heat dissipation devices 100 are connected in parallel. The width and height of each heat dissipation device 100 can be controlled. When the heat exchange capacity is increased, the heat exchange capacity of a single device can be increased by increasing the number of finned coil pipes 4, and even a modular assembly can be made, flanges and software connections can be used, and multiple parallel connections can be achieved. The heat exchange capacity of the product arranged in this way is more expandable. In addition, since the width of the heat dissipation device 100 is limited, the width of the finned coil pipe 4 is reduced, the flow resistance in the finned coil pipe 4 can be effectively controlled, and the power consumption of the water pump 8 is reduced. When the heat dissipation power needs to be increased, only the parallel connection of multiple heat dissipation devices 100 is required.

[0049] The heat dissipation device 100 and the heat exchange equipment 200 can spray water to the filler layer 2 through the spray part 3, cooperate with the axial flow fan 5 to dissipate heat, improve the heat dissipation effect, and are not easy to cause the surface of the finned coil pipe 4 to be covered with scale and be blocked. Multiple heat dissipation devices 100 can be connected in parallel to meet higher heat dissipation requirements. The heat dissipation device 100 and the heat exchange equipment 200 have good heat dissipation effect, are convenient to use, have strong expandability, and are convenient to maintain and repair.

[0050] The technical features of the above-described embodiments can be combined in any manner. To make the description concise, all possible combinations of the technical features in the above-described embodiments are not described, but as long as the combinations of the technical features do not contradict, they should be considered as the scope of the present application.

[0051] The above-described embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the present application. It should be pointed out that for ordinary skilled persons in the art, without departing from the concept of the present application, some modifications and improvements can be made, which are all within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A heat dissipating device characterized by: The heat dissipation device comprises a filler layer, a spraying member arranged above the filler layer to spray water towards the filler layer, a finned coil arranged above the spraying member, an axial flow fan arranged above the finned coil, and an air inlet channel arranged below the filler layer in the vertical direction, wherein the projections of the finned coil and the spraying member fall within the filler layer.

2. The heat dissipating device of claim 1, wherein: The filler layer is formed with a zigzag corrugated surface to form a water film.

3. The heat dissipating device of claim 1, wherein: The heat dissipation device further comprises a water collecting tank arranged below the filler layer in the vertical direction, wherein the air inlet channel is arranged between the water collecting tank and the filler layer.

4. The heat dissipating device of claim 3, wherein: The spraying member comprises a plurality of water distribution pipes and a plurality of spraying heads arranged on each water distribution pipe.

5. The heat dissipating device of claim 4, wherein: The heat dissipation device further comprises a water pump in communication with the water collecting tank and a main water pipe in communication between the water pump and the water distribution pipes.

6. The heat dissipating device of claim 1, wherein: The heat dissipation device further comprises a heat dissipation box, wherein the filler layer, the spraying member and the finned coil are arranged in the heat dissipation box, the axial flow fan is arranged on the top of the heat dissipation box, and the air inlet channel is arranged on the heat dissipation box.

7. The heat dissipating device of claim 6, wherein: The heat dissipation device further comprises an air inlet grille arranged on the heat dissipation box to cover the air inlet channel.

8. The heat dissipating device of claim 7, wherein: The heat dissipation device further comprises an access door arranged on the heat dissipation box and above the filler layer in the vertical direction.

9. The heat dissipating device of claim 1, wherein: The heat dissipation device further comprises a fluid inlet in communication with the finned coil, an inlet temperature sensor arranged at the fluid inlet, a fluid outlet in communication with the finned coil, and an outlet temperature sensor arranged at the fluid outlet.

10. The heat dissipating device of claim 1, wherein: The spraying member and the finned coil are arranged in the vertical and horizontal directions.

11. A heat exchange apparatus, characterized by: The heat exchange device comprises at least two heat dissipation devices as claimed in any one of claims 1-10, wherein the finned coils of the at least two heat dissipation devices are connected in parallel.

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