Heat dissipation device and heat exchange equipment

Abstract

The invention 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 filler layer, heat dissipation is conducted in cooperation with the axial flow fan, the heat dissipation effect can be improved, residual scale on the surface of the fin coil is not likely to be caused, and filth blockage is not likely to happen.

Description

Technical Field

[0001] The invention relates to a heat dissipation device and a heat exchange equipment. Background Art

[0002] The heat exchange equipment used in data centers requires more and more heat to be exchanged due to the increasing power density of cabinets. The specifications of the supporting heat dissipation equipment are getting larger and the number is increasing.

[0003] At the same time, in order to reduce energy consumption, low carbon and environmental protection, it has become more urgent to use natural cold sources. Using natural cold air for cooling, condensation and heat exchange has become a mainstream. However, due to different climate environments in different places and the increasingly serious global greenhouse effect. In recent years, high temperatures have occurred frequently around the world and have lasted longer and longer, which has made it increasingly difficult to use cold air for heat dissipation. Solving the problem of using natural wind for heat dissipation under high ambient temperatures has become a technical difficulty.

[0004] In addition, as the power density of the cabinet increases, the demand for heat dissipation is also increasing. The requirements for the heat exchange capacity of the heat exchange equipment are also increasing. Domestic pallet transportation requires a width of less than 3m and a transportation height of less than 4m, otherwise it will be treated as an over-high or over-wide piece. This will increase the transportation cost. How to increase the heat exchange capacity of the equipment within the limited height and width is a problem that needs 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 detrimental to the flow and heat exchange of the working fluid.

[0005] For example, when a 55% ethylene glycol aqueous solution flows in a pipe with a flow rate of 15.88 and a velocity of 2.1 m / s, the flow resistance of a 25-meter-long pipe reaches nearly 2 bar. This is not conducive to the long-term stable operation of the water pump and will increase the power consumption of the water pump.

[0006] In view of this, it is necessary to improve the existing heat dissipation device to solve the above problems. Summary of the invention

[0007] The object of the present invention is to provide a heat dissipation device to solve the problem of low heat dissipation efficiency of the existing radiator.

[0008] To achieve the above-mentioned purpose, the present invention provides a heat dissipation device, which includes a packing layer, a spray piece arranged above the packing layer and used for spraying water toward the packing layer, a fin coil arranged above the spray piece, an axial flow fan arranged above the fin coil, and an air intake channel. In the vertical direction, the air intake channel is located below the packing layer, and the projections of the fin coil and the spray piece both fall into the packing layer.

[0009] As a further improvement of the present invention, a tortuous corrugated surface is formed in the packing layer to form a water film.

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

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

[0012] As a further improvement of the present invention, the heat dissipation device also includes a water pump connected to the water collecting tank and a main water pipe connected to the water pump and the water distribution pipe.

[0013] As a further improvement of the present invention, the heat dissipation device also includes a heat dissipation box, the filler layer, the spray element and the fin coil are all arranged in the heat dissipation box, the axial flow fan is arranged on the top of the heat dissipation box, and the air intake channel is opened on the heat dissipation box.

[0014] As a further improvement of the present invention, the heat dissipation device further includes an air inlet grille installed on the heat dissipation box and covering the air inlet channel.

[0015] As a further improvement of the present invention, an inspection door is provided on the heat dissipation box body, and along the vertical direction, the inspection door is located above the packing layer.

[0016] As a further improvement of the present invention, the heat dissipation device also includes a fluid inlet connected to the fin coil, an inlet temperature sensor arranged at the fluid inlet, a fluid outlet connected to the fin coil and an outlet temperature sensor arranged at the fluid outlet.

[0017] As a further improvement of the present invention, the spray element and the fin coil are arranged obliquely in the vertical and horizontal directions.

[0018] The present invention also provides a heat exchange device, which comprises at least two heat dissipation devices as described above, and the fin coils of at least two of the heat dissipation devices are connected in parallel.

[0019] The beneficial effects of the present invention are as follows: the heat dissipation device and heat exchange equipment of the present invention can improve the heat dissipation effect by arranging a spraying part to spray water to the packing layer and cooperate with an axial flow fan to dissipate heat, and are not prone to residual scale on the surface of the fin coil and are not prone to dirt and blockage; multiple heat dissipation devices can be connected in parallel to meet higher heat dissipation requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a front structural schematic diagram of the heat exchange device of the present invention;

[0021] Figure 2 is a side structural schematic diagram of the heat exchange device of the present invention;

[0022] Figure 3 is a front cross-sectional structural schematic diagram of the heat exchange device of the present invention;

[0023] Figure 4 is a schematic diagram of a side cross-sectional structure of a heat exchange device of the present invention;

[0024] Figure 5 is a schematic structural diagram of a spray component of a heat dissipation device of the present invention;

[0025] Figure 6 It is a schematic structural diagram of the spray piece of the heat dissipation device of the present invention from another angle. DETAILED DESCRIPTION

[0026] 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.

[0027] 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.

[0028] 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, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection 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. In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0029] like Figures 1 to 6As shown, the heat exchange device 200 of the present invention includes at least two heat dissipation devices 100, and at least two heat dissipation devices 100 are connected in parallel along the length direction to achieve a design of large heat exchange of a single device.

[0030] The heat dissipation device 100 includes a heat dissipation box 1, a packing layer 2, a spray part 3 arranged above the packing layer 2 for spraying water toward the packing layer 2, a fin coil 4 arranged above the spray part 3, an axial flow fan 5 arranged above the fin coil 4, an air intake channel 6, a water collecting tank 7, a water pump 8 connected to the water collecting tank 7, a main water pipe 9, an air intake grid 10 installed on the heat dissipation box 1 to cover the air intake channel 6, a fluid inlet 101 connected to the fin coil 4, an inlet temperature sensor 102 arranged at the fluid inlet 101, a fluid outlet 103 connected to the fin coil 4, an outlet temperature sensor 104 arranged at the fluid outlet 103, and a control unit.

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

[0032] In this embodiment, air enters the heat dissipation box 1 from the air inlet passage 6, takes away the heat from the fin coil 4, and is discharged through the axial flow fan 5. In this embodiment, the air inlet passage 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 packing layer 2, and along the vertical direction, the air inlet channel 6 is located between the water collecting tank 7 and the packing layer 2. In this embodiment, the water collecting tank 7 is arranged at the bottom of the heat dissipation box 1 to store cooling water.

[0034] The air inlet grille 10 is a plastic component, which can change the direction of air inlet so that the wind can enter the heat dissipation box 1 from the air inlet grille 10 better and more evenly, and can effectively block direct sunlight from entering the water collecting box 7 to prevent algae from growing in the water collecting box 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 packing layer 2. The inspection door 11 is convenient for users to open and clean the sundries in the heat dissipation box 1, or to repair or replace part of the structure.

[0036] Wind enters the heat dissipation box 1 from the air inlet grille 10 , takes away the heat on the fin coil 4 , and then is discharged upward from the heat dissipation box 1 from the axial flow fan 5 .

[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 used for display, and the value detected by the outlet temperature sensor 104 is used 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 achieved and the fan energy consumption can be reduced.

[0038] The outlet temperature sensor 104 and the axial flow fan 5 are both electrically connected to the control unit, and the temperature signal reception, 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 providing the packing layer 2 and the spraying member 3, the humidity of the air blown to the fin coil 4 is increased to take away more heat.

[0040] The packing layer 2 is provided with a tortuous corrugated surface to form a water film, thereby increasing the contact and heat exchange area between water and wind. The water film is in full contact with the passing air, enhancing the evaporation and heat absorption of water, and reducing the temperature of the hot air. Under reasonable design conditions, the air temperature can be reduced from the dry-bulb temperature to a temperature close to the wet-bulb temperature of the air.

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

[0042] The spraying member 3 includes a plurality of water branch pipes 31 and a plurality of spray heads 32 disposed on each of the water branch pipes 31. The main water pipe 9 connects the water pump 8 with the water branch pipes 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, further branches the water to the water branch pipes 31, and sprays the water from the spray heads 32. In order to improve the spraying effect, in this embodiment, the spray heads 32 are diffuser nozzles to spray the water more evenly.

[0043] In this embodiment, two groups of spray parts 3 and fin coils 4 are arranged in a heat dissipation box 1, and the spray parts 3 and the fin coils 4 are arranged obliquely in the vertical and horizontal directions. From the cross-section, the two groups of spray parts 3 and the fin coils 4 are both V-shaped. Accordingly, the fact that the fin coils 4 in this embodiment are arranged above the spray parts 3 does not mean that any position of the fin coils 4 is located above any position of the spray parts 3, but means that the corresponding position of the fin coils 4 corresponding to any point on the horizontal plane is higher than the corresponding position of the spray parts 3. Such an arrangement can avoid water from being sprayed onto the fin coils 4, thereby avoiding the residual scale substances on the surface of the fin coils 4 due to the evaporation of water, so that the fin coils 4 are not easy to be dirty and blocked.

[0044] Preferably, the spray element 3 is arranged to be parallel to the adjacent fin coil 4 , so as to fully utilize the space below the fin coil 4 .

[0045] Each of the spray parts 3 is provided with a plurality of water distribution pipes 31 which are spaced apart and arranged in parallel in the height and horizontal directions, and a plurality of spray heads 32 are provided on each water distribution pipe 31, and the spray heads 32 of each water distribution pipe 31 are spaced apart and evenly arranged in the length direction, so that each spray head 32 is staggeredly arranged, and the water inlet pressure, spraying angle and spraying range of the spray head 32 are controlled, so that water can be sprayed onto the packing layer 2 more evenly.

[0046] After the wind enters the heat dissipation box 1 through the air inlet grid 10 arranged around the device through the air inlet channel 6, it contacts the fin coil 4 after passing through the packing layer 2 and the spray part 3, and finally exits the heat dissipation box 1 through the axial flow fan 5. The design of the fin coil 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 can no longer meet the heat dissipation requirements. At this time, the water pump 8 is turned on to pump the water in the water collecting tank 7 into the spray part 3. The water in the spray part 3 sprays downward, and the water passes through the packing 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 packing layer 2.

[0048] When larger-scale heat dissipation is required, at least two heat dissipation devices 100 can be provided, and the fin coils 4 of at least two of the heat dissipation devices 100 are connected in parallel. The dimensions of each heat dissipation device 100 in the width direction and the height direction are controllable. When the heat exchange amount increases, the heat exchange amount of a single device can be increased by increasing the number of fin coils 4, and it can even be made into a modular assembly type, using flanges and software connections, so that multiple devices can be connected in parallel. The heat exchange capacity of products in this arrangement form is more expandable. In addition, since the width of the heat dissipation device 100 is limited, thereby reducing the width of the fin coil 4, the flow resistance in the fin coil 4 can be effectively controlled, and the power consumption of the water pump 8 can be reduced. When the heat dissipation power needs to be increased, it is only necessary to realize the parallel connection of multiple heat dissipation devices 100.

[0049] The heat dissipation device 100 and the heat exchange equipment 200 of the present invention can improve the heat dissipation effect by setting a spraying part 3 to spray water to the packing layer 2, and cooperate with the axial flow fan 5 to dissipate heat, and it is not easy to cause scale to remain on the surface of the fin coil 4, and it is not easy to be dirty and 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 of the present invention have good heat dissipation effect, are easy to use, have strong scalability, and are easy to maintain and repair.

[0050] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0051] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A heat dissipation device, characterized in that: The heat dissipation device includes a packing layer, a spray component arranged above the packing layer and used for spraying water toward the packing layer, a fin coil arranged above the spray component, an axial fan arranged above the fin coil, and an air intake channel. In the vertical direction, the air intake channel is located below the packing layer, and the projections of the fin coil and the spray component both fall into the packing layer.

2. The heat dissipation device according to claim 1, characterized in that: A tortuous corrugated surface is formed in the packing layer to form a water film.

3. The heat dissipation device according to claim 1, characterized in that: The heat dissipation device further comprises a water collecting box, which is arranged below the packing layer. In the vertical direction, the air inlet channel is located between the water collecting box and the packing layer.

4. The heat dissipation device according to claim 3, characterized in that: The spraying member comprises a plurality of water distribution pipes and a plurality of spraying heads arranged on each of the water distribution pipes.

5. The heat dissipation device according to claim 4, characterized in that: The heat dissipation device also includes a water pump connected to the water collecting tank and a main water pipe connected to the water pump and the water distribution pipe.

6. The heat dissipation device according to claim 1, characterized in that: The heat dissipation device further comprises a heat dissipation box, the packing layer, the spraying element and the fin coil are all 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 opened on the heat dissipation box.

7. The heat dissipation device according to claim 6, characterized in that: The heat dissipation device also includes an air inlet grille installed on the heat dissipation box and covering the air inlet channel.

8. The heat dissipation device according to claim 7, characterized in that: The heat dissipation box body is provided with an inspection door, and in the vertical direction, the inspection door is located above the packing layer.

9. The heat dissipation device according to claim 1, characterized in that: The heat dissipation device further includes a fluid inlet communicated with the fin coil, an inlet temperature sensor arranged at the fluid inlet, a fluid outlet communicated with the fin coil, and an outlet temperature sensor arranged at the fluid outlet.

10. The heat dissipation device according to claim 1, characterized in that: The spray element and the fin coil are arranged obliquely in vertical and horizontal directions.

11. A heat exchange device, characterized in that: The heat exchange equipment comprises at least two heat dissipation devices according to any one of claims 1 to 10, and the fin coils of at least two of the heat dissipation devices are connected in parallel.

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