CN217441996U - Machine room air conditioner capable of refrigerating at low load - Google Patents
Machine room air conditioner capable of refrigerating at low load Download PDFInfo
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- CN217441996U CN217441996U CN202220512080.9U CN202220512080U CN217441996U CN 217441996 U CN217441996 U CN 217441996U CN 202220512080 U CN202220512080 U CN 202220512080U CN 217441996 U CN217441996 U CN 217441996U
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Abstract
The utility model relates to a machine room air conditioner capable of refrigerating under low load, which comprises a cold chamber, a hot chamber, a control loop and a fresh air unit; the cold chamber and the hot chamber are mutually isolated, and a pressure balancing device for balancing pressure is arranged between the cold chamber and the hot chamber; an evaporation device, a condensation device and a compression device are sequentially distributed on the control loop; the evaporation device is arranged in the cold chamber; the condensing device and the compressing device are arranged in the heat chamber, the evaporating device comprises an evaporator, and the evaporator is arranged on the control loop; the fresh air unit comprises a fresh air pipeline communicated with the condensing device, so that fresh air generated by the condensing device is conveyed to the evaporating device, the heat load of the cold chamber can be improved, the air conditioner always keeps stable operation, and the problems that the air conditioner in a machine room, particularly a constant-frequency air conditioning unit, is frequently started and stopped under low load and has overhigh energy consumption are solved.
Description
Technical Field
The utility model relates to an air conditioner field, more specifically say, relate to a refrigerated computer lab air conditioner of ability low-load.
Background
The application scene of the air conditioner in the machine room determines that the operation of the air conditioner has reliability, the air conditioner operates under low load, particularly a fixed-frequency air conditioner, when the heat dissipation capacity of a server is smaller than the refrigerating capacity of the air conditioner, the air conditioner stops after meeting the refrigerating requirement and is repeatedly started and stopped in a certain period, and at the moment, the fluctuation of the internal environment temperature of the machine room is large.
If the response time of starting and stopping the air conditioner is not fast enough, even high and low temperature alarms can occur to influence the operation of the server in the machine room. Frequent starting and stopping of refrigeration devices such as compressors and the like can also affect the service life of internal devices of the air conditioner. The starting machine with a large starting current brings about no small impact on the power grid.
The current data center frequently opens to stop the operation problem for solving the air conditioner under the low heat load, can adopt the condition that the electric heating compensates the heat load not enough usually to make the inside cold and hot equilibrium of realization of computer lab, server and air conditioner synchronous steady operation. However, the energy consumption of the scheme is too high, and the scheme is quite uneconomical.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in, to prior art's above-mentioned defect, a can cryogenic computer lab air conditioner of low-load is provided.
The utility model provides a technical scheme that its technical problem adopted is: a machine room air conditioner capable of refrigerating under low load is constructed, and comprises a cold chamber, a hot chamber, a control loop and a fresh air unit;
the cold chamber and the hot chamber are mutually isolated, and a pressure balancing device for balancing pressure is arranged between the cold chamber and the hot chamber;
an evaporation device, a condensation device and a compression device are sequentially distributed on the control loop;
the evaporation device is arranged in the cold chamber;
the condensing device and the compressing device are arranged in the heat chamber, the evaporating device comprises an evaporator, and the evaporator is arranged on the control circuit;
the fresh air unit comprises a fresh air pipeline communicated with the condensing device, so that fresh air generated by the condensing device is conveyed to the evaporating device.
Preferably, the cold chamber and the hot chamber are arranged side by side, and a partition board is arranged between the cold chamber and the hot chamber for isolation.
Preferably, the pressure balancing means is provided on the diaphragm, the pressure balancing means comprising a pressure balancing valve.
Preferably, the condensing device comprises a condenser and a condensing fan, the condenser is arranged on the control loop, the condensing fan is located in the hot chamber and opposite to the pressure balancing device, and a hot air port for supplying air to the outside of the hot chamber is arranged on the condenser.
Preferably, the control circuit is further provided with a throttling device positioned between the evaporation device and the condensation device, and the throttling device is arranged in the cold chamber to control the flow rate flowing to the evaporation device.
Preferably, the end part of the fresh air pipeline connected with the condensing device is provided with a hot air collecting device so as to collect the fresh air generated by the condensing device into the fresh air pipeline.
Preferably, a filtering device is arranged in the fresh air pipeline and comprises a filtering net.
Preferably, an air volume adjusting device is arranged on the fresh air pipeline and comprises an air regulating valve.
Preferably, the evaporator comprises a first evaporation unit and a second evaporation unit, and the control circuit comprises a first inlet branch and a first outlet branch which are connected with the first evaporation unit, and a second inlet branch and a second outlet branch which are connected with the second evaporation unit;
the first inlet branch and the second inlet branch are respectively connected with the condensing device, the first outlet branch and the second outlet branch are respectively connected with the compressing device, and the first inlet branch is provided with a control device for controlling the switch.
Preferably, the evaporation device comprises an evaporation fan, the evaporation fan is positioned in the cold chamber, and the evaporation fan is opposite to the outlet of the fresh air pipeline;
the control device is a low-load electromagnetic valve, and the evaporator comprises a cold air port for exhausting air outside the cold cavity.
Implement the utility model discloses a can cryogenic computer lab air conditioner of low-load has following beneficial effect: the computer lab air conditioner of this patent is separated there is cold cavity, hot cavity, and condensing equipment's heat can promote the heat load of cold cavity to evaporation plant conveying, lets the air conditioner keep steady operation always to solve the computer lab air conditioner especially frequency air conditioning unit frequently under the low-load and open and stop, the too high problem of energy consumption.
Drawings
The invention will be further explained with reference to the drawings and examples, wherein:
fig. 1 is a schematic diagram of a machine room air conditioner capable of refrigerating at low load in the embodiment of the present invention.
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1, the machine room air conditioner capable of refrigerating at low load in a preferred embodiment of the present invention includes a cold chamber a, a hot chamber B, a control circuit 1, and a fresh air unit 2.
The cold chamber A and the hot chamber B are isolated from each other, so that hot air in the two chambers is isolated from each other, and energy loss caused by heat exchange is reduced.
A pressure balancing device 31 for balancing pressure is arranged between the cold chamber A and the hot chamber B, and the pressure between the cold chamber A and the hot chamber B is balanced.
An evaporation device 4, a condensation device 5 and a compression device 7 are sequentially distributed on the control circuit 1, furthermore, the evaporation device 4 is arranged in the cold chamber A, and the condensation device 5 and the compression device 7 are arranged in the hot chamber B.
The evaporation apparatus 4 includes an evaporator 41, the evaporator 41 is disposed on the control circuit 1, and the evaporator 41 includes a first evaporation unit 411 and a second evaporation unit 412.
The control circuit 1 comprises a first inlet branch 11 and a first outlet branch 12 connected to the first evaporation unit 411, and a second inlet branch 13 and a second outlet branch 14 connected to the second evaporation unit 412.
The first inlet branch 11 and the second inlet branch 13 are respectively connected to the condensing device 5, the first outlet branch 12 and the second outlet branch 14 are respectively connected to the compressing device 7, and the first inlet branch 11 is provided with a control device 111 for controlling the opening and closing of the branches, preferably, in this embodiment, the control device 111 is a low-load solenoid valve.
The fresh air unit 2 comprises a fresh air pipeline 21 communicated with the condensing device 5 so as to convey fresh air generated by the condensing device 5 to the evaporating device 4.
This patent can cryogenic computer lab air conditioner of underload separate there is cold chamber A, hot chamber B, and condensing equipment 5's heat can convey to evaporation plant 4, evaporation plant 4 is evaporation capacity still can be controlled, 8 underload refrigeration demand problems of server can be solved to whole scheme, can be through the control on the logic, the switching of three kinds of modes, realize the collaborative work, in order to solve the air conditioner operation problem under the lower load, can solve under the low heat load frequent start-up of fixed frequency air conditioning system, the computer lab air conditioner of the too high problem of energy consumption.
The cold chamber A and the hot chamber B are arranged side by side, and a partition plate 3 is arranged between the cold chamber A and the hot chamber B for isolation. A pressure balancing device 31 is provided on the partition 3, the pressure balancing device 31 comprising a pressure balancing valve, which opens when required, balancing the pressure between the cold chamber a and the hot chamber B.
In some embodiments, the control circuit 1 is further provided with a throttling device 6 between the evaporation device 4 and the condensation device 5, and the throttling device 6 is arranged in the cold chamber a to control the flow rate to the evaporation device 4.
Further, the condensing device 5 includes a condenser 51 and a condensing fan 52, the condenser 51 is disposed on the control circuit 1, the condensing fan 52 is disposed in the hot chamber B and opposite to the pressure balancing device 31, and the condenser 51 is provided with a hot air port 511 for supplying air to the outside of the hot chamber B.
Preferably, the end part of the fresh air pipeline 21 connected with the condensing device 5 is provided with a hot air collecting device 22 so as to collect the fresh air generated by the condensing device 5 into the fresh air pipeline 21, thereby improving the collecting efficiency.
Furthermore, a filtering device 23 is arranged in the fresh air pipeline 21, and the filtering device 23 comprises a filtering net for filtering sundries in the fresh air. Preferably, an air volume adjusting device 24 is provided on the fresh air duct 21, and the air volume adjusting device 24 includes an air volume adjusting valve 241 for adjusting the air volume.
In some embodiments, the evaporator 4 includes an evaporator fan 42, the evaporator fan 42 is located in the cooling chamber a, and the evaporator fan 42 is opposite to the outlet of the fresh air duct 21, so that the fresh air coming out of the fresh air duct 21 is sent to the evaporator 41. Further, the evaporator 41 includes a cool air outlet 413 for exhausting air to the outside of the cool chamber a, and can supply cool air to the server 8.
This patent can cryogenic computer lab air conditioner of underload can realize following several kinds of modes to can realize the switching of several kinds of modes:
a flow reduction mode:
the evaporator 4 is divided into two units, wherein the control device 111 is disposed in the first inlet branch 11 of the first evaporator unit 411, and when the system load is low and the refrigeration requirement is small, the control device 111 is closed to block the low-temperature and low-pressure refrigerant from the compressor 7, the heat exchange area of the evaporator 41 in the circulation system is reduced, the low-pressure is reduced, the system refrigeration capacity is suppressed, and the system can stably operate under low load.
A wind mixing mode:
when the system is operated under low load, the refrigeration demand of the system reaches a very low value, the system can automatically open the pressure balancing device 31 and the fresh air pipeline 21 according to the demand value, and at this time, part of hot air sent by the condensing device 5 can pass through the fresh air pipeline 21 to the evaporator 41 so as to improve the inner side heat load.
The opening angle of the air regulating valve 241 is associated with the refrigeration demand value, and the lower the refrigeration demand is, the larger the opening angle of the air regulating valve 241 is; the greater the cooling demand, the smaller the opening angle of the damper 241.
After the refrigeration demand increases to a certain value, the damper will close when the minimum refrigeration capacity of the system can match the heat load from the server 8. The hot air collecting device 22 is a flaring device and is in a bell mouth shape, so that hot air from the condenser 51 can be conveniently collected, and impurities in outdoor fresh air can be filtered by the filter screen.
The return air from the server 8 in the cold room a is sent to the hot room B through the pressure balancing device 31, and then discharged to the outside through the compression fan, so that the pressures of the internal and external circulation are balanced.
The flow-down wind mixing mode comprises the following steps:
when the system load is extremely low, the air conditioning system can run in two modes in parallel when the down-flow mode and the mixed-air mode can not deal with the start-stop problem caused by the low-load working condition. The air conditioner in the air mixing mode can ensure the energy efficiency and reduce the cold quantity to the lowest level.
The system adjusts the priority of the use of the down-flow mode and the mixed-wind mode according to the humidity under the low-load condition. The down-flow mode is because of the refrigerant concentrates on the operation of 41 a way of evaporimeter, and system's evaporation pressure gauge evaporating temperature can reduce relatively, and the evaporimeter 41 surface condensation that lower coil pipe temperature can be to reduce return air humidity, reach the effect of dehumidification.
In the air mixing mode, a part of air passing through the evaporator 41 comes from fresh air in the external environment, and in most cases, the fresh air can provide a certain humidification effect for a drier internal environment.
When the server 8 is in a lower humidity working condition, the system can wake up the mixed wind mode preferentially; when the ambient humidity is high, the system can preferentially adopt a down-flow mode to prevent rainwater on the outdoor side from entering the indoor environment through the fresh air pipeline 21.
When the outdoor humidity is too high, the system will prefer the down-flow mode.
When the system load is extremely low, and the down-flow and mixed-wind modes can not cope with the start-stop problem caused by the low-load working condition independently, the air conditioning system can run in parallel in two modes so as to realize the continuous and stable operation of the air conditioner.
It is to be understood that the above-described respective technical features may be used in any combination without limitation.
The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.
Claims (10)
1. A machine room air conditioner capable of refrigerating under low load is characterized by comprising a cold chamber (A), a hot chamber (B), a control loop (1) and a fresh air unit (2);
the cold chamber (A) and the hot chamber (B) are mutually isolated, and a pressure balancing device (31) for balancing pressure is arranged between the cold chamber (A) and the hot chamber (B);
an evaporation device (4), a condensation device (5) and a compression device (7) are sequentially distributed on the control loop (1);
the evaporation device (4) is arranged in the cold chamber (A);
the condensing device (5) and the compressing device (7) are arranged in the hot chamber (B), the evaporating device (4) comprises an evaporator (41), and the evaporator (41) is arranged on the control loop (1);
the fresh air unit (2) comprises a fresh air pipeline (21) communicated with the condensing device (5) so that fresh air generated by the condensing device (5) is conveyed to the evaporating device (4).
2. Machine room air conditioner capable of refrigerating under low load according to claim 1, wherein the cold chamber (A) and the hot chamber (B) are arranged side by side, and a partition plate (3) is arranged between the cold chamber (A) and the hot chamber (B) for isolation.
3. Machine room air conditioner capable of low load refrigeration according to claim 2, characterized in that the pressure balancing device (31) is arranged on the partition (3), the pressure balancing device (31) comprising a pressure balancing valve.
4. Machine room air conditioner capable of refrigerating at low load according to claim 3, wherein the condensing device (5) comprises a condenser (51) and a condensing fan (52), the condenser (51) is arranged on the control loop (1), the condensing fan (52) is positioned in the hot chamber (B) and opposite to the pressure balancing device (31), and the condenser (51) is provided with a hot air port (511) for supplying air out of the hot chamber (B).
5. Machine room air conditioner capable of low load refrigeration according to claim 1, characterized in that a throttling device (6) is further arranged on the control circuit (1) between the evaporation device (4) and the condensation device (5), and the throttling device (6) is arranged in the cold chamber (a) to control the flow rate to the evaporation device (4).
6. Machine room air conditioner capable of refrigerating at low load according to claim 1, wherein the end of the fresh air duct (21) connected with the condensing device (5) is provided with a hot air collecting device (22) to collect fresh air generated by the condensing device (5) into the fresh air duct (21).
7. Machine room air conditioner capable of refrigerating at low load according to claim 1, wherein a filtering device (23) is arranged in the fresh air duct (21), and the filtering device (23) comprises a filter screen.
8. Machine room air conditioner capable of refrigerating with low load according to claim 1, wherein an air volume adjusting device (24) is arranged on the fresh air duct (21), and the air volume adjusting device (24) comprises an air adjusting valve (241).
9. Machine room air conditioner capable of low load refrigeration according to any of claims 1 to 8, characterized in that said evaporator (41) comprises a first evaporation unit (411), a second evaporation unit (412); the control circuit (1) comprises a first inlet branch (11) and a first outlet branch (12) connected with the first evaporation unit (411), and a second inlet branch (13) and a second outlet branch (14) connected with the second evaporation unit (412);
the first inlet branch (11) and the second inlet branch (13) are respectively connected with the condensing device (5), the first outlet branch (12) and the second outlet branch (14) are respectively connected with the compressing device (7), and the first inlet branch (11) is provided with a control device (111) for controlling a switch.
10. Machine room air conditioner capable of low load refrigeration according to claim 9, wherein the evaporation device (4) comprises an evaporation fan (42), the evaporation fan (42) is located in the cold chamber (a), and the evaporation fan (42) is opposite to the outlet position of the fresh air duct (21);
the control device (111) is a low-load electromagnetic valve, and the evaporator (41) comprises a cold air port (413) for exhausting air to the outside of the cold chamber (A).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220512080.9U CN217441996U (en) | 2022-03-09 | 2022-03-09 | Machine room air conditioner capable of refrigerating at low load |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220512080.9U CN217441996U (en) | 2022-03-09 | 2022-03-09 | Machine room air conditioner capable of refrigerating at low load |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217441996U true CN217441996U (en) | 2022-09-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220512080.9U Active CN217441996U (en) | 2022-03-09 | 2022-03-09 | Machine room air conditioner capable of refrigerating at low load |
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| Country | Link |
|---|---|
| CN (1) | CN217441996U (en) |
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2022
- 2022-03-09 CN CN202220512080.9U patent/CN217441996U/en active Active
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