CN205878435U - Naturally, cool computer lab air conditioner - Google Patents
Naturally, cool computer lab air conditioner Download PDFInfo
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- CN205878435U CN205878435U CN201620688392.XU CN201620688392U CN205878435U CN 205878435 U CN205878435 U CN 205878435U CN 201620688392 U CN201620688392 U CN 201620688392U CN 205878435 U CN205878435 U CN 205878435U
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- heat exchanger
- air conditioner
- machine room
- refrigerant
- cold
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Abstract
The utility model relates to a naturally, cool computer lab air conditioner, including condenser, refrigerant pump, flow controller and evaporimeter, still including the heat exchanger that is used for improving flow controller refrigerant input refrigerant temperature, the heat exchanger is located the refrigerant pump with between the flow controller. Through the mode that sets up the heat exchanger before the flow controller, utilize difference in temperature heat transfer to promote the big refrigerant temperature of super -cooled rate, reduce actual super -cooled rate to target super -cooled rate, guarantee the double -phase attitude that the refrigerant behind the throttle can get into gas -liquid mixture, improve the distribution degree of consistency and the heat exchange efficiency of refrigerant in the evaporimeter.
Description
Technical field
This utility model relates to field of air conditioning, more particularly, it relates to the coldest a kind of air conditioner in machine room.
Background technology
For maintaining industrial and that information machine room is constant indoor temperature, a feature of air conditioner in machine room is year round cooling, in room
When outer temperature is less than indoor temperature, can directly or indirectly utilize the natural cooling source of outdoor.Directly utilizing natural cooling source can be by sky
The conditions such as makings amount, geographical position limit；Indirectly using outdoor natural cooling source is the solution that current air conditioner in machine room is conventional.Its
In, fluorine pump circulation natural cooling scheme is a kind of competitive energy-efficient scheme.Fluorine pump circulation nature cold air conditioning system
The parts such as including fluorine pump, reducer, vaporizer, condenser, and by high voltage bearing copper pipe, it is connected into airtight system, system
Filling a certain amount of low boiling point working medium, i.e. cold-producing medium, fluorine pump circulating refrigerant circulates in systems.Its operation principle is, fluorine pump
Forced fluid cryogen flows to vaporizer through reducer, and Indoor Thermal air heat release is to the cold-producing medium of circulation in vaporizer, refrigeration
Agent heat absorption and the heat absorption vaporization of least a portion of cold-producing medium, the refrigerant liquid of band bubble is recycled in condenser, then carried
Heat is discharged in the air of outdoor, becomes subcooled liquid after cold-producing medium heat release.As can be seen here, in refrigerated medium pump circulates, by
Excessive in the cold-producing medium degree of supercooling flowing into reducer, the cold-producing medium entering vaporizer after throttling is still subcooled liquid, can cause steaming
Sending out device heat exchange area cannot effectively utilize, refrigerating capacity is not enough.
Utility model content
The technical problems to be solved in the utility model is, for the drawbacks described above of prior art, it is provided that a kind of solution is made
The coldest air conditioner in machine room of the problems such as cryogen degree of supercooling is excessive, and evaporator heat exchange is insufficient.
This utility model solves its technical problem and be the technical scheme is that structure the coldest a kind of air conditioner in machine room, bag
Including condenser, refrigerated medium pump, reducer and vaporizer, the coldest described air conditioner in machine room also includes for improving reducer cold-producing medium
The heat exchanger of input refrigerant temperature, described heat exchanger is located between described refrigerated medium pump and described reducer.
Preferably, also including the regulation valve for controlling to flow refrigerant flow, described refrigerated medium pump is located at by described regulation valve
And between described heat exchanger.
Preferably, described regulation valve is two-port valve or three-way valve.
Preferably, also include being connected to control the controller of described control valve opening with described regulation valve.
Preferably, also include being connected to measure the cold-producing medium pressure of described reducer cold-producing medium input with described controller
Power and the sensor of temperature, described controller controls to adjust the aperture of valve according to the sampled data of described sensor.
Preferably, described sensor includes that temperature sensor and pressure transducer, described cold-producing medium change described in flowing successively through
Hot device, described temperature sensor, described pressure transducer and described reducer.
Preferably, described heat exchanger is the heat exchanger with hot-air as heating agent, and described heat exchanger is arranged on described vaporizer
Hot-air windward side on.
Preferably, described heat exchanger is finned hot coil excessively.
Preferably, described heat exchanger is the heat exchanger with hot water as heating agent, and described heat exchanger includes heat exchange box, described heat exchange
Case is provided with hot water inlet and hot water outlet；Circulating hot water in described heat exchange box is the refrigerant heat flowing into heat exchange box.
This utility model for the coldest air conditioner in machine room under refrigerated medium pump operational mode, refrigerated medium pump output liquid system
Cryogen has the problem of higher degree of supercooling, uses the mode arranging heat exchanger before reducer, utilizes temperature difference heat exchange by supercool
The temperature spending big cold-producing medium promotes, and reduces actual degree of supercooling to target degree of supercooling, makes theoretical value close with actual value, thus protect
Cold-producing medium after card throttling can enter two phases of gas-liquid mixed, improves cold-producing medium distributed uniform degree in vaporizer and changes
The thermal efficiency, increases the refrigerating capacity of air-conditioning.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail, in accompanying drawing:
Fig. 1 is the structural representation of this utility model first embodiment；
Fig. 2 is the degree of supercooling control circuit block diagram of this utility model first embodiment；
Fig. 3 is the control flow chart of this utility model first embodiment；
Fig. 4 is the heat exchanger structure schematic diagram with hot-air as heating agent of this utility model first embodiment；
Fig. 5 is the heat exchanger structure schematic diagram with hot water as heating agent of this utility model the second embodiment；
Fig. 6 is the structural representation of this utility model the 3rd embodiment；
Fig. 7 is the control flow chart of this utility model the 3rd embodiment；
Fig. 8 is the structural representation of this utility model the 4th embodiment.
Detailed description of the invention
Embodiment one:
As it is shown in figure 1, in this utility model the coldest air conditioner in machine room first embodiment, this air-conditioning includes by pipeline even
The refrigerated medium pump 1 connect, heat exchanger 2, reducer 3, vaporizer 4 and condenser 9.Refrigerated medium pump 1 is integrated in cabinet structure part.Should
Air-conditioning also includes the regulation valve 7 controlling cold-producing medium inflow heat exchanger 2 flow, from the cold-producing medium of condenser 9 outflow by regulation valve 7
Flow to heat exchanger 2 and reducer 3.In order to realize more preferable regulating effect, regulation valve 7 preferentially uses two two-port valves；One or two
The import of logical valve 71 is connected with the sub-cooled liquid refrigerant outfan of condenser 9 by refrigerated medium pump 1, its outlet and heat exchanger 2
Cold-producing medium liquid feeding end connect.2 imports of the second two-port valve 7 are defeated with the sub-cooled liquid refrigerant of condenser 9 by refrigerated medium pump 1
Going out end to connect, outlet is connected with the cold-producing medium input of reducer 3.The cold-producing medium input of reducer 3 is provided with temperature sensor 5
With pressure transducer 6.
In degree of supercooling control circuit block diagram as shown in Figure 2, this air-conditioning also includes controller 8, controller 8 and temperature sensing
Device 5, pressure transducer 6 and regulation valve 7 connect.This controller uses PID control method, to the cold-producing medium flowing into reducer 3
Degree of supercooling carries out bias adjustment, and the actual value making cold-producing medium degree of supercooling is consistent with the predetermined value of requirement.
In the present embodiment, the control method of cold-producing medium degree of supercooling is comprised the following steps by the coldest machinery room air conditioner controller 8:
1 determines cold-producing medium saturation temperature T0 of correspondence according to sampled pressure value P1 of pressure transducer；
2 cold-producing medium saturation temperatures T0 obtained according to sample temperature value T1 and step S11 of temperature sensor determine reality
Degree of supercooling Ta, i.e. Ta=T0-T1；
3 is a, i.e. Ts=| Ts-a, Ts+a | according to air-conditioning actual motion environment, target setting degree of supercooling Ts, precision；Such as figure
Control flow chart shown in 3:
If 4 actual degree of supercoolings Ta > Ts+a, illustrate that actual degree of supercooling is excessive, evaporator heat exchange can be caused insufficient, reply system
Cryogen carries out heating to reduce degree of supercooling.Controller 8 cuts out the second two-port valve 72, opens and increases opening of the first two-port valve 71
Degree, increases the refrigerant flow flowing to heat exchanger 2；Actual degree of supercooling Ta is made to enter the accuracy rating of target degree of supercooling.
If < Ts-a, although illustrating that actual degree of supercooling, close to target degree of supercooling, but still can affect vaporizer for actual degree of supercooling Ta
Heat exchange efficiency, controller 8 opens the second two-port valve 72, opens and reduce the aperture of the first two-port valve 71, reduces and flows to heat exchange
The refrigerant flow of device 2；Actual degree of supercooling Ta is made to enter the accuracy rating of target degree of supercooling.
If actual degree of supercooling Ta is in the accuracy rating of Ts, controller 8 cuts out the first two-port valve 71, and cold-producing medium flows directly into
Reducer 3, it is not necessary to heated by heat exchanger 2.
Specifically, determine that the method for cold-producing medium saturation temperature T0 is in step 1, inquire pressure by refrigerant property table
Cold-producing medium saturation temperature T0 that force value P1 is corresponding.
In order to realize more preferable Detection results, when the actual degree of supercooling Ta scope more than Ts, the every 10S of controller 8 detects
Actual degree of supercooling Ta, and the cold-producing medium output of the Data Control regulation valve 7 obtained according to detection, make actual degree of supercooling Ta
Enter the accuracy rating of target degree of supercooling, improve the heat exchange efficiency of vaporizer 4.
As shown in Figure 4, for the heat exchange form of heat exchanger, preferably by the hot blast and the machine room room that blow to indoor evaporator 4
Interior temperature, to refrigerant heat, reaches accurately to control the purpose of degree of supercooling.Heat exchanger 2 was hot coil, was arranged on evaporator plate
On the hot blast windward side of pipe 41.Heat exchanger liquid feeding end 21 is arranged on the lee face of evaporator coil, and heat exchanger liquid outlet 22 is arranged
In the windward side of evaporator coil, increased the contact area of hot coil and hot blast as far as possible.Room under the effect of indoor fan 42
Interior-heat air flow vaporizer 4, while hot blast and vaporizer contact heat-exchanging also be arranged on evaporator coil 41 windward side
Heat exchanger 2 contact, carry out heat exchange with heat exchanger 2, make the cold-producing medium in heat exchanger 2 heat up.
For improving the heat exchange efficiency of heat exchanger 2, it is preferred to use the hot coil of finned tube form, as heat exchanger 2, increased
The external surface area of hot coil, improving heat exchanging efficiency.
Embodiment two:
As it is shown in figure 5, for realize stable heat transfer effect, the heat exchanger of air conditioner in machine room the coldest to embodiment one changes
Enter, use the dividing wall type heat exchanger using hot water as heating agent.This heat exchanger is provided with heat exchange box 25, and cold-producing medium flows successively through heat exchanger
Liquid feeding end 21, heat exchange box 25 and heat exchanger liquid outlet 22, this casing is provided with hot water inlet 23 and hot water outlet 24.This type of heat exchange
Device, by the hot water of the circulation refrigerant heat to inflow heat exchange box in heat exchange box, reduces its degree of supercooling.
Embodiment three:
As shown in Figure 6, for simplifying air conditioner structure, the regulation valve 7 for embodiment one improves, and uses a three-way valve
Regulate the flow of cold-producing medium inflow heat exchanger 2.Regulation valve 7 is a three-way valve；Refrigerated medium pump 1 is passed through in the import of three-way valve 7
Being connected with the sub-cooled liquid refrigerant outfan of condenser 9, the first outlet of three-way valve 7 is connected with the liquid feeding end of heat exchanger 2, its
Second outlet is connected with the cold-producing medium input of reducer 3.
This air-conditioning includes that controller 8, controller 8 are connected with temperature sensor 5, pressure transducer 6 and regulation valve 7 equally.
This controller uses PID control method, the degree of supercooling of the cold-producing medium flowing into reducer 3 is carried out bias adjustment, makes cold-producing medium mistake
The actual value of cold degree is consistent with the predetermined value of requirement.
In the present embodiment, there is the cold machinery room air conditioner controller of nature 8 as follows to the control mode of cold-producing medium degree of supercooling:
1 determines cold-producing medium saturation temperature T0 of correspondence according to sampled pressure value P1 of pressure transducer；
2 cold-producing medium saturation temperatures T0 obtained according to sample temperature value T1 and step S11 of temperature sensor determine reality
Degree of supercooling Ta, i.e. Ta=T0-T1；
3 is a, i.e. Ts=| Ts-a, Ts+a | according to air-conditioning actual motion environment, target setting degree of supercooling Ts, precision；Such as figure
Shown in control flow chart shown in 7:
If 4 actual degree of supercoolings Ta > Ts+a, illustrate that actual degree of supercooling is excessive, evaporator heat exchange can be caused insufficient, reply system
Cryogen carries out heating and reduces degree of supercooling.Controller 8 controls three-way valve 7 and increases the aperture of the first outlet, increases and flows to heat exchanger 2
Refrigerant flow；Actual degree of supercooling Ta is made to enter the accuracy rating of target degree of supercooling.
If < Ts-a, although illustrating that actual degree of supercooling, close to target degree of supercooling, but still can affect vaporizer for actual degree of supercooling Ta
Heat exchange efficiency, controller 8 controls three-way valve 7 and reduces the aperture of the first outlet, reduces the refrigerant flow flowing to heat exchanger 2；
Actual degree of supercooling Ta is made to enter the accuracy rating of target degree of supercooling.
If actual degree of supercooling Ta is in the accuracy rating of Ts, controller 8 controls three-way valve 7 and cuts out the first outlet, cold-producing medium
Flow directly into reducer 3, it is not necessary to heated by heat exchanger 2.
Specifically, determine that the method for cold-producing medium saturation temperature T0 is in step 1, inquire P1 by refrigerant property table
Corresponding cold-producing medium saturation temperature T0.
In order to realize more preferable Detection results, when the actual degree of supercooling Ta scope more than Ts, the every 10S of controller 8 detects
Actual degree of supercooling Ta, and the cold-producing medium output of the Data Control regulation valve 7 obtained according to detection, make actual degree of supercooling Ta
Enter the accuracy rating of target degree of supercooling, improve the heat exchange efficiency of vaporizer 4.
Embodiment four:
As shown in Figure 8, for the air conditioner in machine room of cold district, if cold-producing medium is always in the state that degree of supercooling is excessive.Can be right
The flow of refrigerant flow direction heat exchanger 2 does not do and controls, and when refrigerated medium pump runs, directly opens heat exchanger 2, and heat exchange is flow through in heating
The cold-producing medium of device, reduces its degree of supercooling.
The heat exchanger form in the coldest air conditioner in machine room mentioned in this utility model that it is pointed out that can be set
The arbitrary forms such as pipe, finned tube, microchannel and package.Real work situation according to the coldest air conditioner in machine room, can be heat exchanger
Set corresponding thermal source, however it is not limited to above-mentioned hot-air and two kinds of heat resource forms of hot water.The two-way mentioned in this utility model
Valve can be switching mode two-port valve, it is also possible to be adjustable type two-port valve.The three-way valve mentioned in this utility model can be hands
Dynamic adjustment type, it is also possible to be electric adjustable nodal pattern.
This utility model for the coldest air conditioner in machine room under refrigerated medium pump operational mode, refrigerated medium pump output liquid system
Cryogen has the problem of higher degree of supercooling, uses the mode arranging heat exchanger before reducer, utilizes temperature difference heat exchange by supercool
The temperature spending big cold-producing medium promotes, and reduces actual degree of supercooling to target degree of supercooling, makes theoretical value close with actual value, thus protect
Cold-producing medium after card throttling can enter two phases of gas-liquid mixed, improves cold-producing medium distributed uniform degree in vaporizer and changes
The thermal efficiency, increases the refrigerating capacity of air-conditioning.
It should be understood that above example only have expressed preferred implementation of the present utility model, its description is the most concrete
In detail, but therefore can not be interpreted as the restriction to this utility model the scope of the claims；It should be pointed out that, for this area
Those of ordinary skill for, without departing from the concept of the premise utility, above-mentioned technical characterstic can be carried out freedom
Combination, it is also possible to making some deformation and improvement, these broadly fall into protection domain of the present utility model；Therefore, all with this practicality
Equivalents that novel right is done and modification, all should belong to the covering scope of this utility model claim.
Claims (9)
1. the coldest air conditioner in machine room, including condenser (9), refrigerated medium pump (1), reducer (3) and vaporizer (4), it is special
Levy and be, also include the heat exchanger (2) for improving reducer (3) cold-producing medium input refrigerant temperature, described heat exchanger (2)
It is located between described refrigerated medium pump (1) and described reducer (3).
The coldest air conditioner in machine room the most according to claim 1, it is characterised in that also include for controlling refrigerant flow
Regulation valve (7), described regulation valve (7) is located between described refrigerated medium pump (1) and described heat exchanger (2).
The coldest air conditioner in machine room the most according to claim 2, it is characterised in that described regulation valve (7) is two-port valve or three
Logical valve.
The coldest air conditioner in machine room the most according to claim 2, it is characterised in that also include being connected with described regulation valve (7)
For controlling the controller (8) of described regulation valve (7) aperture.
The coldest air conditioner in machine room the most according to claim 4, it is characterised in that also include being connected with described controller (8)
For measuring refrigerant pressure and the sensor of temperature of described reducer (3) cold-producing medium input, described controller (8) basis
The aperture of sampled data control and regulation valve (7) of described sensor.
The coldest air conditioner in machine room the most according to claim 5, it is characterised in that described sensor includes temperature sensor
(5) with pressure transducer (6), described cold-producing medium flows successively through described temperature sensor (5), described pressure transducer (6) and institute
State reducer (3).
The coldest air conditioner in machine room the most according to claim 1, it is characterised in that described heat exchanger (2) is for hot-air to be
The heat exchanger (2) of heating agent, described heat exchanger (2) is arranged on the hot-air windward side of described vaporizer (4).
The coldest air conditioner in machine room the most according to claim 7, it is characterised in that described heat exchanger (2) is finned overheated
Coil pipe.
The coldest air conditioner in machine room the most according to claim 1, it is characterised in that described heat exchanger (2) is with hot water as heat
The heat exchanger (2) of matchmaker, described heat exchanger (2) includes heat exchange box (25), and described heat exchange box is provided with hot water inlet (23) and hot water
Outlet (24)；Circulating hot water in described heat exchange box (25) is the refrigerant heat flowing into heat exchange box (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620688392.XU CN205878435U (en) | 2016-06-30 | 2016-06-30 | Naturally, cool computer lab air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620688392.XU CN205878435U (en) | 2016-06-30 | 2016-06-30 | Naturally, cool computer lab air conditioner |
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| CN205878435U true CN205878435U (en) | 2017-01-11 |
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| CN201620688392.XU Active CN205878435U (en) | 2016-06-30 | 2016-06-30 | Naturally, cool computer lab air conditioner |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106016541A (en) * | 2016-06-30 | 2016-10-12 | 深圳市艾特网能技术有限公司 | Natural cooling machine room air conditioner and supercooling degree control method thereof |
| CN106852088A (en) * | 2017-03-24 | 2017-06-13 | 广东申菱环境系统股份有限公司 | Single-stage tandem liquid gas binary channels natural cooling data center heat dissipation system |
| CN106979569A (en) * | 2017-03-24 | 2017-07-25 | 广东申菱环境系统股份有限公司 | Interior circulation stand alone type twin-stage liquid gas binary channels natural cooling data center heat dissipation system |
| WO2018000345A1 (en) * | 2016-06-30 | 2018-01-04 | 深圳市艾特网能技术有限公司 | Air conditioner for use in natural cooling machine room and condensate depression control method therefor |
| CN107606809A (en) * | 2017-10-20 | 2018-01-19 | 江苏兆胜空调有限公司 | A kind of two phase flow high performance refrigerating unit |
-
2016
- 2016-06-30 CN CN201620688392.XU patent/CN205878435U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106016541A (en) * | 2016-06-30 | 2016-10-12 | 深圳市艾特网能技术有限公司 | Natural cooling machine room air conditioner and supercooling degree control method thereof |
| WO2018000345A1 (en) * | 2016-06-30 | 2018-01-04 | 深圳市艾特网能技术有限公司 | Air conditioner for use in natural cooling machine room and condensate depression control method therefor |
| CN106852088A (en) * | 2017-03-24 | 2017-06-13 | 广东申菱环境系统股份有限公司 | Single-stage tandem liquid gas binary channels natural cooling data center heat dissipation system |
| CN106979569A (en) * | 2017-03-24 | 2017-07-25 | 广东申菱环境系统股份有限公司 | Interior circulation stand alone type twin-stage liquid gas binary channels natural cooling data center heat dissipation system |
| CN106852088B (en) * | 2017-03-24 | 2023-05-12 | 广东申菱环境系统股份有限公司 | Single-stage serial liquid-gas dual-channel natural cooling data center heat dissipation system |
| CN107606809A (en) * | 2017-10-20 | 2018-01-19 | 江苏兆胜空调有限公司 | A kind of two phase flow high performance refrigerating unit |
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