Packing-free dry-wet cooling device and operation control method thereof

Abstract

The invention provides a filler-free dry-wet cooling device and an operation control method thereof.The filler-free dry-wet cooling device comprises a user side, the user side is connected with a plate heat exchanger, the plate heat exchanger is connected with a water tank through a water pump, the upper portion of the water tank is connected with a machine shell, a draught fan is arranged at the top of the machine shell, and a water retaining assembly is arranged below the draught fan; a spraying assembly is arranged below the water retaining assembly, the spraying assembly is connected with the plate heat exchanger, and a first air cooler and a second air cooler are arranged on the two sides of the machine shell respectively. Switching can be controlled according to the outdoor dry-bulb temperature point, the cold supply requirement can be met through evaporative cooling, renewable energy sources are fully utilized, and the operation energy consumption of the refrigerating system is reduced.

Description

Technical Field

[0001] The present invention relates to the field of data center refrigeration, and in particular to a filler-free dry-wet cooling device and an operation control method thereof. Background Art

[0002] In the field of data center cooling, as users' requirements for cold source temperature decrease, at least refrigeration equipment no longer needs to lower the temperature too low, so that natural cold sources can be more fully utilized. For example, the improvement of data center liquid cooling technology can increase the cold source temperature to 35°C, so direct evaporative cooling can meet cooling needs under extreme outdoor conditions.

[0003] Based on this, the present application proposes a filler-free dry-wet cooling device and an operation control method thereof. Summary of the invention

[0004] The purpose of the present invention is to provide a filler-free dry-wet cooling device and an operation control method thereof, which can meet the cooling demand, make full use of renewable energy, and reduce the energy consumption of the refrigeration system.

[0005] To achieve the above object, the present invention provides the following solutions:

[0006] The present invention provides a filler-free dry-wet cooling device, comprising a user end, wherein the user end is connected to a plate heat exchanger, the plate heat exchanger is connected to a water tank through a water pump, a casing is connected above the water tank, a fan is provided on the top of the casing, a water retaining assembly is provided below the fan, a spray assembly is provided below the water retaining assembly, the spray assembly is connected to the plate heat exchanger, and a first air cooler and a second air cooler are respectively provided on both sides of the casing.

[0007] Preferably, the distance between the spray assembly and the water retaining assembly is Wherein, h2 is the distance between the outer nozzle of the spray assembly and the housing, and θ is the angle between the spray outer contour of a single nozzle of the spray assembly and the horizontal direction.

[0008] Preferably, the number of nozzles in the spray assembly is the total water supply flow divided by the flow of a single nozzle.

[0009] Preferably, the outlet water temperature of the filler-free dry-wet cooling device is T+Δt1, wherein T is the cooling temperature at the user end, and Δt1 is the heat exchange temperature difference of the plate heat exchanger.

[0010] The present invention also provides an operation control method of a filler-free dry-wet cooling device, comprising:

[0011] 1) When the outdoor dry-bulb temperature is less than or equal to T-△t2-△t, switch the first air cooler and the second air cooler to operate;

[0012] 2) When the outdoor dry-bulb temperature is greater than T-△t2-△t, switch the spray assembly to operate;

[0013] Wherein, Δt2 is the heat exchange temperature difference between the fluid and the air in the first air cooler and the second air cooler.

[0014] Compared with the prior art, the present invention has achieved the following beneficial technical effects:

[0015] The present invention provides a filler-free dry-wet cooling device and an operation control method thereof, comprising a user end, wherein the user end is connected to a plate heat exchanger, the plate heat exchanger is connected to a water tank through a water pump, the water tank is connected to a casing above, a fan is provided on the top of the casing, a water retaining assembly is provided below the fan, a spray assembly is provided below the water retaining assembly, the spray assembly is connected to the plate heat exchanger, and a first air cooler and a second air cooler are respectively provided on both sides of the casing; the user end can be switched according to the outdoor dry-bulb temperature point control, the cooling demand can be met by using evaporative cooling, renewable energy is fully utilized, and the energy consumption of the refrigeration system is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. 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 creative labor.

[0017] Figure 1 A schematic structural diagram of a filler-free dry-wet cooling device provided by the present invention;

[0018] In the figure: 1. fan, 2. water retaining assembly, 3. spray assembly, 4. first air cooler, 5. second air cooler, 6. water tank, 7. water pump, 8. plate heat exchanger, 9. user end. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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.

[0020] The object of the present invention is to provide a filler-free dry-wet cooling device and an operation control method thereof to solve the problems existing in the prior art.

[0021] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] Embodiment 1:

[0023] This embodiment provides a filler-free dry-wet cooling device, such as Figure 1 As shown, it includes a user end 9, which is connected to a plate heat exchanger 8. The plate heat exchanger 8 is connected to a water tank 6 through a water pump 7. The water tank 6 is connected to a casing above, a fan 1 is provided on the top of the casing, a water retaining assembly 2 is provided below the fan 1, a spray assembly 3 is provided below the water retaining assembly 2, and the spray assembly 3 is connected to the plate heat exchanger 8. A first air cooler 4 and a second air cooler 5 are provided on both sides of the casing respectively.

[0024] As an embodiment, the distance between the spray assembly 3 and the water retaining assembly 2 is Wherein, h2 is the distance between the outer nozzle of the spray assembly 3 and the housing, and θ is the angle between the spray outer contour of a single nozzle of the spray assembly 3 and the horizontal direction.

[0025] As an implementation manner, the number of nozzles in the spray assembly 3 is the total water supply flow divided by the flow of a single nozzle.

[0026] As an implementation method, the outlet water temperature of the filler-free dry-wet cooling device is T+△t1, wherein T is the cooling temperature of the user end 9, and △t1 is the heat exchange temperature difference of the plate heat exchanger 8.

[0027] This embodiment also provides an operation control method for the above-mentioned filler-free dry-wet cooling device, and the spray mode and the operation heat exchange control point of the air cooler are controlled and switched according to the outdoor dry bulb temperature point T-△t2-△t, that is:

[0028] 1) When the outdoor dry-bulb temperature is less than or equal to T-△t2-△t, the first air cooler 4 and the second air cooler 5 are switched to operate;

[0029] 2) When the outdoor dry-bulb temperature is greater than T-△t2-△t, switch the spray component 3 to operate;

[0030] Wherein, Δt2 is the heat exchange temperature difference between the fluid and the air in the first air cooler 4 and the second air cooler 5 .

[0031] The present invention provides a filler-free dry-wet cooling device and an operation control method thereof, which can control switching according to an outdoor dry-bulb temperature point, meet cooling needs by utilizing evaporative cooling, make full use of renewable energy, and reduce the operating energy consumption of the refrigeration system.

[0032] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A filler-free dry-wet cooling device, comprising a user end, the user end being connected to a plate heat exchanger, characterized in that: The plate heat exchanger is connected to a water tank through a water pump, the water tank is connected to a casing above, a fan is provided on the top of the casing, a water retaining assembly is provided below the fan, a spray assembly is provided below the water retaining assembly, the spray assembly is connected to the plate heat exchanger, and a first air cooler and a second air cooler are provided on both sides of the casing respectively.

2. The filler-free dry-wet cooling device according to claim 1, characterized in that: The distance between the spray assembly and the water retaining assembly Wherein, h2 is the distance between the outer nozzle of the spray assembly and the housing, and θ is the angle between the spray outer contour of a single nozzle of the spray assembly and the horizontal direction.

3. The filler-free dry-wet cooling device according to claim 1, characterized in that: The number of nozzles in the spray assembly is the total water supply flow divided by the flow of a single nozzle.

4. The filler-free dry-wet cooling device according to claim 1, characterized in that: The outlet water temperature of the filler-free dry-wet cooling device is T+Δt1, wherein T is the cooling temperature at the user end, and Δt1 is the heat exchange temperature difference of the plate heat exchanger.

5. The operation control method of the filler-free dry-wet cooling device according to any one of claims 1 to 4, characterized in that: include: 1) When the outdoor dry-bulb temperature is less than or equal to T-△t2-△t, switch the first air cooler and the second air cooler to operate; 2) When the outdoor dry-bulb temperature is greater than T-△t2-△t, switch the spray assembly to operate; Wherein, Δt2 is the heat exchange temperature difference between the fluid and the air in the first air cooler and the second air cooler.

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