Refrigeration cycle device

Abstract

The invention relates to an air refrigeration cycle device, and particularly discloses a refrigeration cycle device which comprises a machine room body, a cold air duct and a hot air duct, the cold air duct and the hot air duct are alternately formed, and a static pressure area is arranged under the ground of the machine room body and communicates with the cold air duct in the machine room body through a cold air opening. An air inducing pipeline is arranged on the inner side of the machine room body opposite to the top of the hot air duct and communicates with the outside. According to the refrigeration cycle device, the static pressure area is arranged to serve as a cold air storage area, then the multiple cold air openings are formed to communicate with the machine room body, and the independent air inducing assemblies are arranged at the cold air openings. And the cold air channel into which cold air is injected can be accurately controlled through feedback information of the sensor, so that the air temperature in the machine room main body is relatively uniform. The conditions that cold air in partial areas is excessive and the temperature in partial areas does not reach the standard in the past are reduced, and the energy-saving effect is improved. And a plurality of air inducing pipelines are arranged to correspond to the hot air duct, so that air in an area with relatively high temperature can be quickly extracted.

Description

Technical Field

[0001] The present invention relates to the technical field of refrigeration cycle equipment, and particularly to a refrigeration cycle device. Background Art

[0002] With the rapid development of information technology, the scale and equipment density of the main body of the data room are constantly increasing. According to the different regions where the main body of the data room is located, the climate is also different. Therefore, the functions of the air refrigeration cycle equipment required in different regions are somewhat different.

[0003] Servers, network equipment, etc. in the main body of the data room will generate a large amount of heat during operation. If these heats cannot be dissipated in time and effectively, it will cause the temperature in the main body of the data room to rise, which will in turn affect the normal operation of the equipment, and even shorten the service life of the equipment. In severe cases, it may even cause equipment failures and result in serious consequences such as data loss.

[0004] At present, common refrigeration methods for the main body of the data room include air cooling, water cooling, etc. Although the air cooling system is easy to install and has a low cost, it has problems such as limited refrigeration efficiency and difficulty in eliminating local hot spots. Although the water cooling system has a strong refrigeration capacity, it has disadvantages such as a complex system, high maintenance costs, and a risk of water leakage. In addition, traditional refrigeration cycle devices also have deficiencies in energy recovery and utilization, humidity control, and it is difficult to meet the requirements of high efficiency, energy saving, and stable operation of the main body of the data room. Therefore, there is an urgent need for a refrigeration cycle device that can optimize the refrigeration cycle, improve energy efficiency, and accurately control temperature and humidity. Summary of the Invention

[0005] The purpose of the present invention is to provide a refrigeration cycle device to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the present invention provides the following technical solutions: A refrigeration cycle device includes a main body of the data room. Cabinets in the main body of the data room are arranged face to face and back to back, forming alternating cold air ducts and hot air ducts. A static pressure area is provided under the ground of the main body of the data room. The static pressure area is communicated with the cold air ducts in the main body of the data room through cold air inlets. Air guiding pipes communicating with the outside are provided at the tops of the main body of the data room opposite to the hot air ducts. An air valve is provided inside each air guiding pipe. The refrigeration cycle device further includes a compressor, a condenser, a throttle valve, a main evaporator, and an air guiding component connected together through pipes; Among them, the main evaporator is arranged at the air inlet of the static pressure area, the air guiding component is arranged at the cold air inlet, and the air outlet of the air guiding pipe is opposite to the air inlet of the fan of the condenser.

[0007] Preferably, the compressor uses a two-stage compression variable frequency compressor, and a heat exchange energy recovery device is connected to the exhaust end of the compressor.

[0008] Preferably, the main evaporator includes a plurality of heat dissipation groups, and the plurality of heat dissipation groups are connected in series. Heat dissipation fins are evenly inserted inside the heat dissipation groups, and a plurality of ventilation openings are formed between the heat dissipation fins and the heat dissipation groups.

[0009] Preferably, each heat dissipation group includes a plurality of microchannels, and connectors are sleeved on both sides of each microchannel. A dispersion chamber and a collection chamber are respectively formed inside the connectors located on both sides of the microchannel.

[0010] Preferably, wind blocking plates are staggeredly arranged inside the ventilation openings.

[0011] Preferably, a humidity control component is arranged at the air outlet of the main evaporator. The humidity control component includes an outer cover, a centrifugal cylinder forming a dehydration air duct is rotatably connected inside the outer cover, a wet air duct is formed by the gap between the centrifugal cylinder and the outer cover, an adsorbent for the moisture in the air is filled inside the centrifugal cylinder, fan blades are arranged on the outer wall of the centrifugal cylinder, and a valve plate is rotatably connected to the outer cover at the air outlet end of the wet air duct.

[0012] Preferably, the air guiding component includes swing blades for adjusting the wind direction, a cross-flow fan is arranged below the swing blades, and a sub-evaporator is arranged between the cross-flow fan and the swing blades.

[0013] Preferably, the refrigerant channels of the sub-evaporator and the main evaporator are connected in series, and the refrigerant channels first enter the sub-evaporator and then enter the main evaporator.

[0014] Preferably, the refrigerant channels of the sub-evaporator and the main evaporator are connected in parallel, and a solenoid valve for controlling the flow rate is arranged in the refrigerant channel of the sub-evaporator.

[0015] Preferably, a spray and a water collection tank are respectively arranged at the top and bottom of the condenser, a circulation pump is arranged inside the water collection tank, and the circulation pump is connected to the spray through a water pipe.

[0016] Compared with the prior art, the beneficial effects of the present invention are: For this refrigeration cycle device, first, a static pressure area is set as the storage area for cold air. Then, by providing a plurality of cold air outlets to communicate with the main body of the machine room, and independent air guiding components are provided at each cold air outlet. Through the feedback information of the sensors, it is possible to accurately control into which cold air duct the cold air is injected, so that the air temperature in the main body of the machine room is relatively uniform. It reduces the situation in the past where there is excessive cold air in some areas and the temperature in some areas does not reach the standard, and improves the energy-saving effect. By providing a number of air guiding pipes corresponding to the hot air ducts, the air in the area with relatively high temperature can be quickly evacuated. There is also a humidity control component provided at the air inlet of the static pressure area to improve the air quality in the main body of the machine room, avoid the generation of static electricity on the cabinets due to dry air, and the situation where most equipment is corroded and conducts electricity due to air humidity. Description of the Drawings

[0017] Figure 1 It is a schematic structural diagram of the air circulation in a preferred embodiment of the present invention; Figure 2 It is a three-dimensional structural diagram of the main evaporator in a preferred embodiment of the present invention; Figure 3 It is a rear side plane structural diagram of the main evaporator in a preferred embodiment of the present invention; Figure 4 It is a cross-sectional view of the heat dissipation group in a preferred embodiment of the present invention; Figure 5 It is a structural diagram of the wind blocking plate in a preferred embodiment of the present invention; Figure 6 It is a structural diagram of the connection between the wind blocking plate and the heat dissipation fins in a preferred embodiment of the present invention; Figure 7 It is a structural diagram of the front side of the humidity control component in a preferred embodiment of the present invention; Figure 8 It is a structural diagram of the centrifugal cylinder in a preferred embodiment of the present invention; Figure 9 It is a structural diagram of the rear side of the humidity control component in a preferred embodiment of the present invention; Figure 10 It is a structural diagram of the closed state of the valve plate in a preferred embodiment of the present invention; Figure 11 It is a structural diagram of the air guiding component in the top view direction in a preferred embodiment of the present invention; Figure 12 It is a structural diagram of the air guiding component in the bottom view direction in a preferred embodiment of the present invention.

[0018] In the figure: 1. Main body of the machine room; 2. Main evaporator, 21. Connector, 22. Microchannel, 23. Radiator fin, 24. Vent, 25. Wind blocking plate, 26. Dispersion chamber, 27. Collection chamber; 3. Humidity control component, 31. Outer cover, 32. Valve plate, 33. Fan blade, 34. Centrifugal cylinder, 35. Adsorbent, 36. Ventilation net; 4. Throttle valve; 5. Static pressure area; 6. Cold air outlet; 7. Air guiding component, 71. Swing blade, 72. Cross-flow fan, 73. Sub-evaporator; 8. Heat exchange energy recovery device; 9. Compressor; 10. Condenser; 11. Spraying; 12. Water collecting tank; 13. Air guiding pipeline; 14. Circulation pump; 15. Air valve. Detailed implementation mode

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0020] Please refer to Figures 1-12 , the present invention provides a technical solution: A refrigeration cycle device includes a main body 1 of the machine room. The cabinets in the main body 1 of the machine room are arranged face to face and back to back, forming alternating cold air ducts and hot air ducts. A static pressure area 5 is arranged under the ground of the main body 1 of the machine room. The static pressure area 5 is communicated with the cold air ducts in the main body 1 of the machine room through cold air outlets 6. An air guiding pipeline 13 communicating with the outside is arranged at the top of the main body 1 of the machine room opposite to the hot air ducts, and an air valve 15 is arranged inside each air guiding pipeline 13.

[0021] The refrigeration cycle device further includes a compressor 9, a condenser 10, a throttle valve 4 and a main evaporator 2, and an air guiding component 7 are connected together through pipelines, and a circulating air path is formed in combination with the static air area 5 and the air guiding pipeline 13 in the main body 1 of the machine room.

[0022] The throttle valve 4 is installed in the refrigerant circulation pipeline and is located between the condenser 10 and the evaporator 9. The throttle valve 4 adopts an electronic expansion valve, and precisely adjusts the refrigerant flow rate according to parameters such as the temperature and humidity of the data center received by the controller. When the load of the data center increases and the temperature rises, the controller controls the electronic expansion valve to increase the opening degree, so that more refrigerant enters the evaporator to improve the refrigeration capacity; conversely, when the load decreases, the opening degree is reduced to avoid incomplete evaporation caused by excessive refrigerant. Compared with the traditional thermal expansion valve, the electronic expansion valve has higher adjustment accuracy and faster response speed.

[0023] Among them, the main evaporator 2 is arranged at the air inlet of the static pressure zone 5, the air guiding assembly 7 is arranged at the cold air outlet 6, and the air outlet of the air guiding duct 13 faces the fan air inlet of the condenser 10.

[0024] The compressor 9 uses a two-stage compression variable-frequency compressor, and a heat exchange energy recovery device 8 is connected to the exhaust end of the compressor 9. The compression ratio and rotational speed can be adjusted in real time according to the actual cooling load requirements of the data center. Its structure includes a low-pressure stage compression chamber and a high-pressure stage compression chamber, and the two compression chambers are connected by an intermediate cooler. This design can effectively reduce the power consumption during the compression process and improve the compression efficiency. In traditional single-stage compression, when the compression ratio is too large, the power consumption of the compressor increases significantly, while two-stage compression can carry out the compression process in stages, making the compression ratio of each stage in a more reasonable range.

[0025] The heat exchange energy recovery device 8 is connected between the exhaust end of the compressor 9 and the inlet of the condenser 10. Its functions include a heat exchanger and energy conversion. The heat exchanger uses the heat of the high-temperature and high-pressure refrigerant discharged by the compressor 9 to heat the cooling medium such as air or water entering the condenser 10. Part of the heat can be converted into electric energy and fed back to the power supply system of the data center, which can reduce the overall energy consumption of the data center.

[0026] The main evaporator 2 includes a plurality of heat dissipation groups, and the plurality of heat dissipation groups are connected in series. Heat dissipation fins 23 are evenly inserted inside the heat dissipation groups, and the heat dissipation fins 23 and the heat dissipation groups form a plurality of ventilation openings 24. The coil of the main evaporator 2 adopts a microchannel 22 structure, and the refrigerant evaporates in the microchannel 22 and conducts efficient heat exchange with the hot air in the cabinet room. The advantage of the microchannel 22 structure is that the refrigerant distribution is more uniform and the heat exchange efficiency is higher.

[0027] And the heat dissipation group includes a parallel design of a plurality of microchannels 22, and connection heads 21 are sleeved on both sides of the microchannels 22. A dispersion chamber 26 and a collection chamber 27 are respectively formed inside the connection heads 21 located on both sides of the microchannels 22. The heat exchange efficiency is increased.

[0028] Blocking wind plates 25 are staggered inside the ventilation openings 24. A certain gap is provided between the blocking wind plates 25 and the ventilation openings 24, and the blocking wind plates 25 are conical, which are used to block part of the wind speed, increase the contact time of the air with the microchannels 22 and the heat dissipation fins 23, and when the wind passes through the ventilation openings 24, it flows close to the inner wall of the ventilation openings 24.

[0029] Since the air humidity in the main computer room 1 is important for the service life of the cabinets, a humidity control component 3 is provided at the air outlet of the main evaporator 2. The humidity control component 3 includes an outer cover 31. Inside the outer cover 31, a centrifugal cylinder 34 that forms a dehydration air duct is rotatably connected. At the air outlet end of the centrifugal cylinder 34, a ventilation net 36 for shielding the adsorbent 35 is provided. The gap between the centrifugal cylinder 34 and the outer cover 31 forms a wet air duct. Inside the centrifugal cylinder 34, an adsorbent 35 for the moisture in the air is filled. The adsorbent 35 needs to use a material with high air permeability and good water absorption, such as sponge. On the outer wall of the centrifugal cylinder 34, fan blades 33 are provided. When the fan blades 33 are blown, the centrifugal cylinder 34 is driven. At the air outlet end of the wet air duct, a valve plate 32 is rotatably connected to the outer cover 31. The fan of the main evaporator 2 drives the air to flow through the main evaporator 2, causing the air to exchange heat with the main evaporator 2, and then passing through the humidity control component 3.

[0030] When it is necessary to reduce the air humidity entering the inside of the static pressure area 5, the valve plate 32 is pulled by an electric telescopic rod to fit with the outer cover 31, closing the wet air duct formed between the centrifugal cylinder 34 and the outer cover 31. The air can only pass through the inside of the centrifugal cylinder 34, and the moisture contained in the air will be absorbed by the adsorbent 35, reducing the humidity of the hot air blown out.

[0031] When it is not necessary to reduce the air humidity entering the inside of the static pressure area 5, the valve plate 32 is pushed by an electric telescopic rod to open the moving space, allowing the wet air duct to ventilate. The air will also blow the fan blades 33, driving the centrifugal cylinder 34 to rotate through the fan blades 33. When the centrifugal cylinder 34 rotates, the adsorbent 35 is driven to rotate, and the moisture of the adsorbent 35 will be thrown into the wet air duct.

[0032] The air guiding component 7 includes swing blades 71 for adjusting the wind direction. Below the swing blades 71, a cross-flow fan 72 is provided. Between the cross-flow fan 72 and the swing blades 71, a sub-evaporator 73 is provided. Controlling the operation of the cross-flow fan 72 can make the cold air in the static pressure area 5 quickly enter the opposite cold air duct. To improve the efficiency, the sub-evaporator 73 can be used for further heat exchange.

[0033] The refrigerant channels of the sub-evaporator 73 and the main evaporator 2 are connected in series. The refrigerant channel first enters the sub-evaporator 73 and then enters the main evaporator 2. In this connection method, the main evaporator 2 is used as a device for pre-cooling the air, so that the air entering the static pressure area 5 is cooled to a certain extent, and then undergoes heat exchange again through the sub-evaporator 73.

[0034] The refrigerant channels of the sub-evaporator 73 and the main evaporator 2 are connected in parallel, and a solenoid valve for controlling the flow rate is provided in the refrigerant channel of the sub-evaporator 73. In this connection method, two-stage cooling is also achieved, and the coolant is split before entering the evaporator. Among them, the operation of the sub-evaporator 73 can be controlled by the solenoid valve.

[0035] A spray 11 and a water collecting tank 12 are respectively arranged at the top and bottom of the condenser 10. A circulation pump 14 is arranged inside the water collecting tank 12, and the circulation pump 14 is connected to the spray 11 through a water pipe.

[0036] The condenser 10 adopts an efficient evaporative condenser, and its structure includes a condensation coil, a spray 11, a fan, and a water collecting tank 12. The condensation coil adopts a special fin structure, which increases the heat exchange area. The spray 11 evenly sprays water on the outer surface of the condensation coil, and the evaporation of water absorbs heat, strengthening the condensation effect. The fan accelerates the air flow, further improving the heat dissipation efficiency. The air discharged from the main machine room 1 is lower in temperature than the outside air. The air guiding pipe 13 is arranged in a tee shape, with one side communicating with the inside of the main machine room 1, one side communicating with the outside, and one side corresponding to the air inlet of the fan of the condenser 10. It is guided to the air inlet of the fan of the condenser 10 through the air guiding pipe 13 to improve the heat exchange effect. Then, the flow rate of the pipe communicating with the inside of the main machine room 1 is controlled through the air valve 15.

[0037] Humidity sensors and temperature sensors are arranged in each cold air duct and hot air duct, and the humidity sensors and temperature sensors are numbered and connected to the PLC control system. The PLC control system collects and analyzes the feedback data information, and then commands the corresponding components of the refrigeration cycle device to work. For example, the driving motors of the compressor, the air valve 15, and the cross-flow fan 72. When increasing the air humidity in the main machine room, the electric telescopic rod connected to the valve plate 32 is commanded to work, pushing the valve plate 32 to open.

[0038] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front part", "center", "both ends", etc. is the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is 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 should not be construed as a limitation to the present invention.

[0039] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "set", "connected", "fixed", "swivelly connected", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium. It can be the internal communication of two elements or the interaction relationship between two elements. Unless otherwise clearly limited, for those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0040] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art will appreciate that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A refrigeration cycle device, comprising a machine room main body (1), wherein cabinets in the machine room main body (1) are arranged face to face and back to back to form alternating cold air ducts and hot air ducts, and is characterized in that: A static pressure zone (5) is provided under the floor of the main body of the machine room (1), and the static pressure zone (5) is connected to the cold air duct in the main body of the machine room (1) through a cold air outlet (6). An air duct (13) is provided on the top of the hot air duct on the inner side of the main body of the machine room (1) and is connected to the outside, and an air valve (15) is provided on the inner side of each of the air ducts (13); The refrigeration cycle device further comprises a compressor (9), a condenser (10), a throttle valve (4), a main evaporator (2) and an air induction component (7) connected together via a pipeline; The main evaporator (2) is arranged at the air inlet of the static pressure zone (5), the air induction assembly (7) is arranged at the cold air outlet (6), and the air outlet of the air induction duct (13) is opposite to the fan air inlet of the condenser (10).

2. The refrigeration cycle device according to claim 1, characterized in that: The compressor (9) uses a two-stage compression variable frequency compressor, and a heat exchange energy recovery device (8) is connected to the exhaust end of the compressor (9).

3. A refrigeration cycle device according to claim 1, characterized in that: The main evaporator (2) comprises a plurality of heat dissipation groups, the plurality of heat dissipation groups being connected in series, heat dissipation fins (23) being evenly inserted into the inner sides of the heat dissipation groups, and the heat dissipation fins (23) and the heat dissipation groups forming a plurality of ventilation openings (24).

4. A refrigeration cycle device according to claim 3, characterized in that: The heat dissipation group comprises a plurality of microchannels (22), both sides of the microchannels (22) are sleeved with connectors (21), and the inner sides of the connectors (21) located on both sides of the microchannels (22) are respectively formed with a dispersion cavity (26) and a collection cavity (27).

5. A refrigeration cycle device according to claim 3, characterized in that: Wind blocking plates (25) are arranged in a staggered manner on the inner side of the ventilation opening (24).

6. A refrigeration cycle device according to claim 1, characterized in that: A humidity control component (3) is provided at the air outlet of the main evaporator (2), the humidity control component (3) comprising an outer cover (31), the inner side of the outer cover (31) being rotatably connected to a centrifugal cylinder (34) constituting a dehydration air duct, the gap between the centrifugal cylinder (34) and the outer cover (31) forming a wet air duct, the inner side of the centrifugal cylinder (34) being filled with an adsorbent (35) for moisture in the air, the outer wall of the centrifugal cylinder (34) being provided with fan blades (33), and a valve plate (32) being rotatably connected to the outer cover (31) at one air outlet end of the wet air duct.

7. A refrigeration cycle device according to claim 1, characterized in that: The air induction component (7) comprises a swing blade (71) for adjusting the wind direction, a cross-flow fan (72) is arranged below the swing blade (71), and a sub-evaporator (73) is arranged between the cross-flow fan (72) and the swing blade (71).

8. A refrigeration cycle device according to claim 7, characterized in that: The refrigerant channel of the sub-evaporator (73) is connected in series with the main evaporator (2), and the refrigerant channel first enters the sub-evaporator (73) and then enters the main evaporator (2).

9. A refrigeration cycle device according to claim 7, characterized in that: The sub-evaporator (73) is connected in parallel with the refrigerant channel of the main evaporator (2), and the refrigerant channel of the sub-evaporator (73) is provided with a solenoid valve for controlling the flow rate.

10. A refrigeration cycle device according to claim 1, characterized in that: The top and bottom of the condenser (10) are respectively provided with a spray (11) and a water collecting tank (12); a circulation pump (14) is provided inside the water collecting tank (12); and the circulation pump (14) is connected to the spray (11) via a water pipe.

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