A cooling unit

Abstract

The utility model relates to the technical field of cooling equipment, provide a cooling unit. The cooling unit includes cooling unit body, cold source air volume adjusting component and bypass air channel. Among them, the cooling unit body is equipped with outdoor air inlet and outdoor air exhaust, and the outdoor air inlet is used for going into outdoor air, and the outdoor air exhaust is used for discharging the outdoor air after being heated by the cooling unit body, the cold source air volume adjusting component is located at the outdoor air inlet and is used for adjusting the opening of the outdoor air inlet, the bypass air channel is located at the cooling unit body, and one end of the bypass air channel is communicated with the outdoor air inlet, and the other end is communicated with the outdoor air exhaust. The utility model solves the defect that the cooling unit in the prior art is prone to condensation phenomenon under cold weather, and realizes a kind of cooling unit capable of reducing condensation phenomenon.

Description

Technical Field

[0001] This utility model relates to the field of cooling equipment technology, and in particular to a cooling unit. Background Technology

[0002] Cooling units are generally used to cool computer rooms. Depending on the outdoor ambient temperature, cooling units typically operate in three modes: a mixed mode in summer when the outside temperature is high; a wet mode in spring and autumn when the outside ambient temperature is moderate; and a dry mode in winter when the outside ambient temperature is low.

[0003] In winter, cold outdoor air is used for cooling. However, in some cold climates, the outdoor air temperature is too low, causing the contact surface of the heat exchange core to reach its condensation point, resulting in a large amount of condensation. This condensation causes a significant loss of moisture from the air in the server room, leading to a substantial decrease in indoor humidity. Furthermore, this condensation can further contribute to ice blockage, thus affecting the normal operation of the unit.

[0004] Therefore, there is an urgent need to design a cooling unit that can reduce the occurrence of condensation. Utility Model Content

[0005] This utility model provides a cooling unit to solve the defect of existing cooling units that are prone to condensation in cold weather, and realizes a cooling unit that can reduce the occurrence of condensation.

[0006] This utility model provides a cooling unit, including:

[0007] The cooling unit body is provided with an outdoor air inlet and an outdoor air outlet. The outdoor air inlet is used to introduce outdoor air, and the outdoor air outlet is used to discharge the outdoor air that has been heated by the cooling unit body.

[0008] A cold source air volume regulating component is provided at the outdoor air inlet and is used to regulate the opening of the outdoor air inlet;

[0009] A bypass ventilation duct is provided on the main body of the cooling unit. One end of the bypass ventilation duct is connected to the outdoor air inlet, and the other end is connected to the outdoor air exhaust outlet.

[0010] According to the present invention, a cooling unit is provided, wherein the cold source air volume regulating component includes:

[0011] A shielding component, used to block the outdoor air inlet;

[0012] A limiting member is provided on the shielding member to limit the shielding member to the outdoor air inlet.

[0013] According to the present invention, a cooling unit is provided in which the limiting member and the outdoor air inlet are magnetically connected.

[0014] According to the present invention, a cooling unit body includes a housing, the interior of which has a first flow channel and a second flow channel, and the outdoor air inlet and the outdoor air outlet are respectively located at both ends of the second flow channel.

[0015] The first flow channel is provided with a computer room return air vent and a computer room supply air vent at both ends, and the computer room return air vent is used to introduce hot air from inside the computer room.

[0016] A heat exchange core is provided at the intersection of the first flow channel and the second flow channel, and the heat exchange core is used to exchange heat between the outdoor air and the hot air inside the machine room.

[0017] According to the present invention, a cooling unit is provided in which exhaust components are provided inside the first flow channel and the second flow channel;

[0018] In the first flow channel, the exhaust assembly is used to drive the air inside the first flow channel toward the air outlet.

[0019] In the second flow channel, the exhaust assembly is used to drive the air inside the second flow channel toward the outdoor air exhaust port.

[0020] According to the present invention, a cooling unit is provided in which the machine room return air inlet, the outdoor air inlet, the outdoor air exhaust outlet and the air supply outlet are all equipped with air valves.

[0021] According to the present invention, a cooling unit is provided in which an outdoor air return port is provided at one end of the second flow channel where the outdoor air exhaust port is located. One end of the outdoor air return port is connected to the second flow channel, and the other end is connected to the bypass ventilation channel.

[0022] According to the present invention, a cooling unit is provided in which the outdoor air return port is equipped with an air valve.

[0023] According to the present invention, the shielding component is a flexible component.

[0024] According to the present invention, a cooling unit is provided with an insulation sleeve on the outer periphery of the bypass ventilation duct.

[0025] The cooling unit provided by this utility model reduces the amount of cold air entering the unit by decreasing the opening of the outdoor air inlet when the outdoor air temperature is too low, thereby reducing the heat load on the heat exchange core. Simultaneously, some of the air heated by the cooling unit body flows back to the outdoor air inlet through a bypass duct, mixing with the incoming cold air and raising the temperature of the air entering the cooling unit body. Through the combined action of the cold air flow regulation component and the bypass duct, the temperature difference at the contact surface of the heat exchange core is significantly reduced, preventing the surface temperature from dropping below the condensation point and causing condensation. This structure effectively controls the amount of cold air entering and raises the temperature of the mixed air through hot air recirculation; this dual effect suppresses condensation, maintaining the humidity of the computer room while preventing ice blockage. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0027] Figure 1 This is a structural schematic diagram of the cooling unit provided by this utility model;

[0028] Figure 2 This is a top view of the cooling unit provided by this utility model;

[0029] Figure 3 This is a side view of the cooling unit provided by this utility model.

[0030] Figure label:

[0031] 100: Cooling unit body; 110: Machine room return air vent; 120: Outdoor air inlet; 130: Outdoor air exhaust vent; 140: Air supply vent; 150: Heat exchange core; 160: Exhaust assembly; 170: Air valve; 180: Outdoor air return vent; 190: Shell;

[0032] 200: Cold source airflow regulating component; 210: Shielding component; 220: Limiting component;

[0033] 300: Bypass ventilation duct. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0035] The following is combined Figures 1-3 Describe the structure and working principle of this utility model.

[0036] Reference Figure 1 and Figure 2 The present invention provides a cooling unit comprising a cooling unit body 100, a cold source airflow regulating component 200, and a bypass ventilation duct 300. The cooling unit body 100 is provided with an outdoor air inlet 120 and an outdoor air exhaust outlet 130. The outdoor air inlet 120 is used to introduce outdoor air, and the outdoor air exhaust outlet 130 is used to exhaust outdoor air that has been heated by the cooling unit body 100. The cold source airflow regulating component 200 is located at the outdoor air inlet 120 and is used to regulate the opening of the outdoor air inlet 120. The bypass ventilation duct 300 is located at the cooling unit body 100, with one end connected to the outdoor air inlet 120 and the other end connected to the outdoor air exhaust outlet 130.

[0037] In the above structure, when the outdoor air temperature is too low, the cold source airflow regulating component 200 reduces the opening of the outdoor air inlet 120, thereby reducing the amount of cold air entering and thus reducing the heat load on the heat exchange core. Simultaneously, some of the air heated by the cooling unit body 100 flows back to the outdoor air inlet 120 through the bypass ventilation duct 300, mixing with the incoming cold air and raising the temperature of the air entering the cooling unit body 100. Through the combined action of the cold source airflow regulating component 200 and the bypass ventilation duct 300, the temperature difference at the contact surface of the heat exchange core is significantly reduced, preventing the surface temperature from dropping below the condensation point and causing condensation. This structure effectively controls the amount of cold air entering and raises the temperature of the mixed air through hot air recirculation; this dual effect suppresses condensation, maintaining the humidity of the computer room while preventing ice blockage.

[0038] In some possible embodiments, the cooling unit body 100 may be equipped with an airflow equalization device, which includes a guide grille at the outdoor air inlet 120 and a diffuser at the outlet of the bypass ventilation duct 300. The guide grille is used to adjust the inflow direction of cold air, allowing it to mix more thoroughly with the hot air returning from the bypass ventilation duct 300; the diffuser reduces the velocity of the returning airflow through a gradually expanding structure, improving the mixing uniformity. The blade angle of the guide grille can be synchronously adjusted with the cold source airflow regulating component 200 via a linkage mechanism, ensuring optimized mixing of cold and hot air at different opening degrees. This embodiment improves the airflow organization, making the airflow control function of the cold source airflow regulating component 200 more synergistic with the hot air return function of the bypass ventilation duct 300, further enhancing the anti-condensation effect. Its advantages are that structural optimization results in more uniform mixing of cold and hot air, more precise temperature regulation, and enhanced operational stability of the unit in low-temperature environments.

[0039] In some other possible embodiments, the outdoor air inlet 120 of the cooling unit body 100 and the cold source airflow regulating component 200 can be connected by a flange and secured with bolts. The cold source airflow regulating component 200 can be equipped with a regulating valve, which is connected to an actuator via a rotating shaft. The actuator can drive the rotating shaft to rotate electrically or manually. The two ends of the bypass ventilation duct 300 are connected to the outdoor air inlet 120 and the outdoor air exhaust outlet 130 by welding or riveting, respectively. In another embodiment, the bypass ventilation duct 300 can be connected to the outdoor air inlet 120 and the outdoor air exhaust outlet 130 by a detachable clamp, facilitating later maintenance. The regulating valve of the cold source airflow regulating component 200 can adopt a multi-blade structure, with each blade rotating synchronously via a linkage rod.

[0040] Reference Figure 1 In some embodiments of this utility model, the cold source air volume regulating component 200 includes a shielding member 210 and a limiting member 220. The shielding member 210 is used to shield the outdoor air inlet 120; the limiting member 220 is disposed on the shielding member 210 and is used to limit the shielding member 210 to the outdoor air inlet 120.

[0041] Specifically, the limiting member 220 is magnetically connected to the outdoor air inlet 120. The shielding member 210 is a flexible component, which can be made of plastic sheeting, while the limiting member 220 can be a permanent magnet. The shielding member 210 is fixed in place by the mutual attraction between the limiting member 220 and the metal edge of the air inlet 120. By using plastic sheeting and a permanent magnet, the cost of this application can be greatly reduced.

[0042] Experiments revealed that maintaining the temperature of the fresh air entering the outdoor air inlet 120 within the range of -5℃ to 0℃ can reduce condensation. Furthermore, it was found that by observing and recording the temperature of the outdoor air inlet 120 when the shielding component 210 blocked 25%, 50%, and 75% of the area, the following results were obtained: when the outdoor temperature was -10℃, with 75% shielding, the temperature of the fresh air entering the outdoor air inlet 120 was 4℃; with 50% shielding, the temperature was -0.5℃; and with 25% shielding, the temperature was -3℃. On average, for every 25% shielding of the air intake area, the temperature of the fresh air entering the outdoor air inlet 120 increased by 3℃. Based on these conclusions, inspectors should adjust the shielding area of ​​the shielding component 210 to accommodate different outdoor temperatures. Of course, the data reference of the above scheme is only for one embodiment. Other settings need to be made according to the specific circumstances of the model and size of the cooling unit body 100.

[0043] In some possible embodiments, the shield 210 and the outdoor air inlet 120 can be connected by a sliding rail. The edge of the shield 210 has a guide groove that mates with the frame of the air inlet, allowing the shield 210 to slide and adjust its opening along the plane of the air inlet 120. The limiting member 220 can be a bolt structure. The bolt passes through the elongated hole on the shield 210 and is threadedly connected to the frame of the air inlet 120. Tightening the bolt positions the shield 210. In another embodiment, the shield 210 can be a rotary structure. One end of the shield is connected to the frame of the air inlet 120 via a hinge. The limiting member 220 is a buckle located at the free end of the shield 210. The buckle mates with multiple positioning holes on the frame of the air inlet 120 to achieve multi-position adjustment. The shield 210 can be made of aluminum alloy plate with an insulation layer on its surface to reduce the thermal bridging effect.

[0044] When air intake needs adjustment, the operator loosens the limiting component 220, moves or rotates the obstruction component 210 to change its obstruction area on the outdoor air intake 120, and then tightens the limiting component 220 to fix the position of the obstruction component 210. By reducing the opening of the air intake 120, the amount of cold air entering is directly reduced, and at the same time, in conjunction with the hot air recirculation in the bypass ventilation duct 300, the temperature of the mixed air intake is increased. This structure achieves precise control of air intake through mechanical adjustment. The cooperation structure between the obstruction component 210 and the limiting component 220 is simple and reliable, easy to maintain, and suitable for air volume adjustment needs under different ambient temperatures.

[0045] In some possible embodiments, the shield 210 may be equipped with guide vanes (not shown in the figure). The guide vanes are evenly distributed along the air inlet edge of the shield 210, and their installation angle is at an angle of 30-45° with the moving direction of the shield 210. When the shield 210 partially blocks the air inlet 120, the guide vanes can guide the airflow into a swirling state, promoting mixing with the hot air returning from the bypass ventilation duct 300. The guide vanes can be made of aluminum alloy integrally formed with the shield 210, and have reinforcing ribs at their roots to improve structural strength. In this embodiment, by optimizing the flow state of the airflow, the mixing of hot and cold air is more thorough, and the temperature field distribution is more uniform. Its advantage is that while maintaining the original regulating function, the anti-condensation effect is further improved, and the guiding effect reduces airflow resistance, reducing the impact on the unit's operating air volume.

[0046] Reference Figure 1 In some embodiments of this utility model, the cooling unit body 100 includes a shell 190, the shell 190 having a first flow channel and a second flow channel inside, an outdoor air inlet 120 and an outdoor air outlet 130 being located at both ends of the second flow channel; the two ends of the first flow channel are respectively provided with a machine room return air inlet 110 and an air supply outlet 140, the machine room return air inlet 110 being used to introduce hot air from inside the machine room; a heat exchange core 150 is connected at the intersection of the first flow channel and the second flow channel, the heat exchange core 150 being used to exchange heat between the outdoor air and the hot air inside the machine room.

[0047] Specifically, the housing 190 can adopt a segmented structure, with each segment connected by flanges and sealed with bolts. The partition between the first and second flow channels is continuously welded to the inner wall of the housing 190 to ensure airtightness. The heat exchange core 150 is fixed inside the housing 190 by a mounting frame, and a rubber sealing strip is provided between the mounting frame and the inner wall of the housing 190 to prevent airflow short-circuiting. Sealing grooves can be provided on the flange edges of the return air vent 110 and the air supply vent 140 of the machine room for embedding sealing strips. In another embodiment, the housing 190 can be formed by bending an integral sheet metal, with the internal flow channel partition fixed by riveting, and the heat exchange core 150 directly fixed to a pre-set mounting base by bolts.

[0048] In this embodiment, hot air from inside the computer room enters the first flow channel through the computer room return air vent 110, while cold outdoor air enters the second flow channel through the outdoor air inlet 120. The two airflows exchange heat at the heat exchange core 150. The hot air transfers heat to the cold air, lowering its temperature, and returns to the computer room through the air outlet 140, thus cooling the computer room. The cold air absorbs heat, raising its temperature, and is discharged through the outdoor air exhaust vent 130. The second flow channel also has an outdoor air return vent 180 at one end of the outdoor air exhaust vent 130. One end of the outdoor air return vent 180 connects to the second flow channel, and the other end connects to the bypass ventilation duct 300. Some of the cold air absorbs heat, raising its temperature, and returns to the outdoor air inlet 120 through the bypass ventilation duct 300. The outdoor air return vent 180 is equipped with a damper 170 to control the airflow.

[0049] This structure achieves heat recovery through the heat exchange core 150, reducing energy loss while lowering the computer room temperature. The cross-flow design of the heat exchange core 150 ensures heat exchange efficiency, and the sealed structure of the shell 190 prevents airflow mixing, ensuring the effectiveness of the heat exchange process.

[0050] Reference Figure 3 In some embodiments of this utility model, both the first and second flow channels are equipped with exhaust components 160. In the first flow channel, the exhaust component 160 drives the air inside the first flow channel to flow towards the air supply port 140. In the second flow channel, the exhaust component 160 drives the air inside the second flow channel to flow towards the outdoor air exhaust port 130. The computer room return air inlet 110, the outdoor air inlet 120, the outdoor air exhaust port 130, and the air supply port 140 are all equipped with air valves 170.

[0051] Specifically, the exhaust assembly 160 can adopt an axial flow fan structure, bolted to the inner wall of the housing 190 via flanges, with damping pads placed between the flanges to reduce vibration transmission. The damper 170 can adopt a multi-leaf regulating valve structure, with the valve body connected to each air outlet via flanges, and the valve shaft fixed to the side wall of the air outlet at both ends using bearing seats. The actuator is connected to the valve shaft via a coupling. In another embodiment, the exhaust assembly 160 can adopt a centrifugal fan, fixed in the flow channel by a welded bracket, with rubber expansion joints at the fan inlet and outlet to eliminate vibration; the damper 170 adopts a butterfly valve structure, with the valve plate installed in the air channel via a rotating shaft, and a manual operating handle installed at the extended end of the rotating shaft. The motor housing of the exhaust assembly 160 can be equipped with heat dissipation fins, and auxiliary heat dissipation is achieved through contact with the inner wall of the housing 190 via thermally conductive silicone.

[0052] In this embodiment, when the exhaust assembly 160 is operating, the exhaust assembly 160 in the first flow channel drives the hot air from the computer room return air inlet 110 to the air supply outlet 140, and the exhaust assembly 160 in the second flow channel drives the outdoor air from the outdoor air inlet 120 to the outdoor air exhaust outlet 130. The damper 170 controls the airflow ratio of each air outlet by adjusting its opening. When heat exchange needs to be adjusted, the opening of the damper 170 at the computer room return air inlet 110 and the outdoor air inlet 120 can be adjusted accordingly. This structure achieves precise adjustment of the airflow in both flow channels through independently controlled exhaust assemblies 160 and dampers 170, ensuring that the heat exchange core 150 maintains optimal heat exchange efficiency under different operating conditions. The direct drive method of the exhaust assembly 160 reduces airflow resistance loss, and the multi-stage adjustment function of the damper 170 improves system adaptability.

[0053] In some possible embodiments, the exhaust assembly 160 may be equipped with a flow guide shroud (not shown in the figure). The flow guide shroud is tapered and expandable, with its inlet section smoothly connected to the fan inlet and its outlet section extending to the inlet of the heat exchange core 150. Spiral guide ribs are provided on the inner wall of the flow guide shroud, causing the airflow to form a stable rotating flow after passing through the exhaust assembly 160. The valve plate of the damper 170 may be provided with an array of guide holes. When the valve plate is in a semi-open state, the guide holes can maintain local airflow and prevent vortices from forming behind the valve plate. This embodiment optimizes the airflow organization, making the outflow of the exhaust assembly 160 more uniform and stable, and reducing flow losses. Its advantages lie in improving the airflow distribution characteristics within the flow channel, further improving system operating efficiency while ensuring airflow regulation function, and reducing energy consumption.

[0054] In some embodiments of this utility model, the outer periphery of the bypass ventilation duct 300 is provided with a heat insulation sleeve.

[0055] Specifically, the insulation jacket can adopt a split structure, consisting of two semi-circular shells connected by flanges and bolted to the outer wall of the bypass ventilation duct 300. The inner layer of the insulation jacket can be lined with high-temperature resistant rock wool insulation, and the outer layer is protected by aluminum plates, with sealing strips used for waterproofing at the aluminum plate joints. In another embodiment, the insulation jacket can adopt an integral sleeve structure, fitting onto the outer surface of the bypass ventilation duct 300 via axial sliding, and secured at both ends with stainless steel clamps. A thermally conductive adhesive layer can be applied between the insulation jacket and the outer wall of the bypass ventilation duct 300 to improve fit and insulation effect. The thickness of the insulation jacket can be designed to be 30-50mm depending on the ambient temperature, with thicker treatment used in high-temperature areas.

[0056] This embodiment effectively reduces heat exchange between the hot air flowing through the bypass ventilation duct 300 and the external environment by wrapping an insulation sleeve around its outer perimeter. When hot air flows through the bypass ventilation duct 300, the insulation sleeve inhibits heat loss, ensuring that the air temperature returning to the outdoor air inlet 120 remains stable. This structure significantly improves the insulation performance of the bypass ventilation duct 300, making the hot air recirculation effect more significant, and thus more effectively increasing the mixed inlet air temperature. The insulation sleeve reduces system energy consumption, enhances the reliability of preventing condensation in low-temperature environments, and avoids the problem of condensation on the outer surface of the bypass ventilation duct 300.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A cooling unit, characterized in that, include: The cooling unit body (100) is provided with an outdoor air inlet (120) and an outdoor air outlet (130). The outdoor air inlet (120) is used to introduce outdoor air, and the outdoor air outlet (130) is used to discharge the outdoor air that has been heated by the cooling unit body (100). A cold source air volume regulating component (200) is provided at the outdoor air inlet (120) and is used to regulate the opening degree of the outdoor air inlet (120); A bypass ventilation duct (300) is provided on the cooling unit body (100). One end of the bypass ventilation duct (300) is connected to the outdoor air inlet (120), and the other end is connected to the outdoor air exhaust outlet (130).

2. The cooling unit according to claim 1, characterized in that, The cold source air volume regulating component (200) includes: A shield (210) is used to shield the outdoor air inlet (120). A limiting member (220) is provided on the shielding member (210) for limiting the shielding member (210) to the outdoor air inlet (120).

3. The cooling unit according to claim 2, characterized in that, The limiting member (220) and the outdoor air inlet (120) are magnetically connected.

4. The cooling unit according to claim 1, characterized in that, The cooling unit body (100) includes a housing (190), the interior of which has a first flow channel and a second flow channel, and the outdoor air inlet (120) and the outdoor air outlet (130) are located at the two ends of the second flow channel, respectively. The first flow channel is provided with a computer room return air inlet (110) and an air supply outlet (140) at both ends, and the computer room return air inlet (110) is used to introduce hot air into the computer room; A heat exchange core (150) is provided at the intersection of the first flow channel and the second flow channel. The heat exchange core (150) is used to exchange heat between the outdoor air and the hot air inside the machine room.

5. The cooling unit according to claim 4, characterized in that, Both the first flow channel and the second flow channel are equipped with exhaust components (160). In the first flow channel, the exhaust assembly (160) is used to drive the air inside the first flow channel toward the air outlet (140); In the second flow channel, the exhaust assembly (160) is used to drive the air inside the second flow channel toward the outdoor air exhaust port (130).

6. The cooling unit according to claim 5, characterized in that, The computer room return air inlet (110), the outdoor air inlet (120), the outdoor air exhaust outlet (130), and the air supply outlet (140) are all equipped with air valves (170).

7. The cooling unit according to claim 4, characterized in that, The second flow channel is provided with an outdoor air return port (180) at one end where the outdoor air exhaust port (130) is located. One end of the outdoor air return port (180) is connected to the second flow channel, and the other end is connected to the bypass ventilation channel (300).

8. The cooling unit according to claim 7, characterized in that, The outdoor air return port (180) is equipped with an air valve (170).

9. The cooling unit according to claim 2, characterized in that, The shielding component (210) is a flexible component.

10. The cooling unit according to claim 1, characterized in that, The outer periphery of the bypass ventilation duct (300) is provided with an insulation sleeve.

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