CN106196447A - Energy-saving machine room air-conditioning and control method thereof - Google Patents
Energy-saving machine room air-conditioning and control method thereof Download PDFInfo
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- CN106196447A CN106196447A CN201610556777.5A CN201610556777A CN106196447A CN 106196447 A CN106196447 A CN 106196447A CN 201610556777 A CN201610556777 A CN 201610556777A CN 106196447 A CN106196447 A CN 106196447A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside air
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- Mechanical Engineering (AREA)
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- Atmospheric Sciences (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Signal Processing (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The present invention relates to a kind of energy-saving machine room air-conditioning and control method thereof, for solve existing air conditioner in machine room can not the switching of control accurate mode of operation and the problem such as the coldest available temperature province is limited, the energy-saving control method of this air-conditioning comprises the following steps: testing machine room indoor temperature T and outdoor temperature Ta in real time；In running status according to air-conditioning and indoor temperature T calculate air conditioning chamber, cooling load compares R；Adjust the running status of air-conditioning than R, machine room indoor temperature T and outdoor temperature Ta according to indoor cooling load, the running status of this air-conditioning includes that fully utilized natural cooling source refrigeration, part utilize natural cooling source refrigeration and do not utilize natural cooling source three kinds of operational modes of refrigeration.
Description
Technical field
The present invention relates to field of air conditioning, more particularly, it relates to a kind of energy-saving machine room air-conditioning and control method thereof.
Background technology
Along with the high speed development of Information technology, quantity and the scale of information machine room are increasing.Owing to machine room is to temperature
High-precision requirement, a feature of air conditioner in machine room is to need year round cooling.The air conditioner in machine room energy consumption problem thus brought the most more comes
The most prominent.The coldest air-conditioning that fluorine pump and compressor combine is a kind of refrigeration skill utilizing the outer natural cooling source of machine room more typically
Art, but the Working mode switching method of the coldest current air-conditioning is to carry out switchover operation mould based on indoor and outdoor temperature difference
Formula, such as summer, when outdoor temperature is higher than indoor temperature, fluorine air pump inoperative, compressor works independently；In season in spring and autumn, outdoor
When temperature is less than indoor temperature, compressor and fluorine pump energy-saving machine work simultaneously；When outdoor temperature is far below indoor temperature in the winter time,
Compressor does not works, and fluorine pump works independently.And the difference variation of different regions there are differences, this control method cannot accomplish basis
The concrete ruuning situation of air-conditioning regulates and controls operational mode accurately.Additionally, the outdoor air-cooled condenser of air-conditioning needs bigger installation
Space, adds the quantities of site operation.
Summary of the invention
The technical problem to be solved in the present invention is, for the drawbacks described above of prior art, it is provided that one can be precisely controlled
The energy-saving machine room air-conditioning of operational mode and effectively minimizing floor space and control method.
The technical solution adopted for the present invention to solve the technical problems is: provide the Energy Saving Control side of a kind of air conditioner in machine room
Method, said method comprising the steps of:
S1: testing machine room indoor temperature T and outdoor temperature Ta in real time；
S2: in calculating air conditioning chamber according to the running status of air-conditioning and indoor temperature T, cooling load compares R；
S3: adjust the fortune of described air-conditioning according to described indoor cooling load than R, machine room indoor temperature T and outdoor temperature Ta
Row state, described running status includes that fully utilized natural cooling source refrigeration, part utilize natural cooling source refrigeration and do not utilize nature
Low-temperature receiver three kinds of operational modes of refrigeration.
Described step S2 includes:
S21: setting machine room indoor objects temperature Ts, precision is a, i.e. Ts=| Ts-a, Ts+a |；
S22: calculate the indoor cooling load ratio of air-conditioning according to described machine room indoor objects temperature Ts and real-time indoor temperature T
R, i.e. R=(T Ts)/a.
Described step S3 includes:
S31: the target setting cooling load threshold range than Rs, i.e. Rs1≤Rs≤Rs2；
S32: according to described indoor cooling load than relation than Rs of R and target refrigeration duty, real-time indoor temperature T of machine room with
The relation of outdoor temperature Ta, adjusts the running status of described air-conditioning；
When T >=Ta, R≤Rs2, the fully utilized outdoor natural cooling source refrigeration of air-conditioning；
As T >=Ta, R ＞ Rs2, air-conditioning part utilizes outdoor natural cooling source refrigeration；
As T ＜ Ta, air-conditioning does not utilize outdoor natural cooling source refrigeration.
Further, described running status also includes the refrigerating efficiency under described three kinds of operational modes, the most described step S3
Also include:
S331: detect the relative air humidity RH of machine room outdoor in real time；
S341: target setting relative humidity RHs, outdoor critical temperature Ta1, and Ta1 ＞ 0 DEG C；
S351: according to described indoor cooling load than relation than Rs of R and target cooling load, described relative humidity RH with
The relation of target relative humidity RHs, outdoor temperature Ta and the relation of outdoor critical temperature Ta1, adjust the refrigeration effect of described air-conditioning
Rate；
As Ta ＞ Ta1, R >=Rs1 and RH≤RHs, at condensation, carry out spray process, improve refrigerating efficiency；
As R ＜ Rs1 or Ta ＜ Ta1 or RH ＞ RHs, not to carrying out spray process at condensation.
Further, running status also includes the refrigerating efficiency under described three kinds of operational modes, and the most described step S3 is also wrapped
Include:
S332: detect the condensing pressure P of cold-producing medium in real time；
S342: set air-conditioning target condensing pressure Ps, described target condensing pressure Ps under different operational modes and include
Target condensing pressure Ps1, part under fully utilized natural cooling source refrigeration mode utilize the target under natural cooling source refrigeration mode
Condensing pressure Ps2, the target condensing pressure Ps3 not utilized under natural cooling source refrigeration mode；
S352: according to described condensing pressure P and the relation of target condensing pressure Ps, adjust the refrigerating efficiency of described air-conditioning；
As P ＜ Ps, improving the speed air flow at condensation, the value increasing P makes it into the accuracy rating of Ps；
As P ＞ Ps, reducing the speed air flow at condensation, the value reducing P makes it into the accuracy rating of Ps；
When P is in the accuracy rating of Ps, do not change the speed air flow at condensation.
The present invention also provides for a kind of energy-saving machine room air-conditioning, including: control the outdoor that device is connected with described control device
Machine, refrigerated medium pump device and indoor set；Described indoor set includes compressor, vaporizer and for detecting the first of indoor temperature
Sensor；Described off-premises station includes condenser, blower fan and for detecting the second sensor of outdoor temperature；
Described control device include indoor cooling load than computing unit,
Described control device according to indoor cooling load than computing unit and first sensor, the output of the second sensor
Data regulate and control the running status of described air-conditioning, and described running status includes:
Refrigerated medium pump device works independently, and the fully utilized natural cooling source of air-conditioning freezes；
Refrigerated medium pump device works with compressor simultaneously, and air-conditioning part utilizes natural cooling source to freeze；
Compressor works independently, and air-conditioning does not utilize natural cooling source to freeze.
Preferably, described off-premises station is provided with the integrated cavity of refrigerated medium pump, and the integrated cavity of described refrigerated medium pump is positioned at condenser
Lower section, described refrigerated medium pump device is arranged in the integrated cavity of described refrigerated medium pump, the cold-producing medium of described refrigerated medium pump device
Liquid feeding end is connected with described condenser, and liquid outlet is connected with described indoor set.
Preferably, described condenser includes plate-shaped condensing tube assembly, and described condensing tube assembly will be for blower fan place
Planar tilt or be vertically arranged.
Preferably, described second sensor is to detect air themperature and the psychrometer of humidity, described outdoor simultaneously
Machine also includes the spray equipment for condenser carries out spray process, and described control device also includes for according to described second
The air humidity of sensor acquisition regulates and controls the spray regulation and control unit of described spray equipment duty.
Preferably, described off-premises station also includes the pressure sensing of the cold-producing medium condensing pressure for measuring condenser liquid outlet
Device, described control device also includes that the blower fan regulating and controlling described rotation speed of fan for the sampled data according to described pressure transducer is adjusted
Speed unit.
Implement energy-saving machine room air-conditioning and the control method of the present invention, the switching of control accurate mode of operation can be realized, and
By to the evaporation efficiency of condenser and the control of speed air flow, more preferable energy-saving effect can be realized further, extends
Existing air conditioner in machine room utilize the cold temperature province of nature.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is the structural representation of energy-saving type air conditioner first embodiment of the present invention；
Fig. 2 is the structural representation of energy-saving type air conditioner the second embodiment of the present invention；
Fig. 3 is the off-premises station top view of energy-saving type air conditioner the 3rd embodiment of the present invention；
Fig. 4 is the off-premises station front view of energy-saving type air conditioner the 3rd embodiment of the present invention；
Fig. 5 is the off-premises station top view of energy-saving type air conditioner the 4th embodiment of the present invention；
Fig. 6 is the off-premises station front view of energy-saving type air conditioner the 4th embodiment of the present invention；
Fig. 7 is spray and the blast velocity control circuit block diagram of energy-saving type air conditioner of the present invention；
Fig. 8 is the spray control flow chart of energy-saving control method of the present invention；
Fig. 9 is the blast velocity control flow chart of energy-saving control method of the present invention；
Figure 10 is energy-saving control method overview flow chart of the present invention.
Detailed description of the invention
First embodiment:
As it is shown in figure 1, in the energy-saving type air conditioner first embodiment of the present invention, this energy-saving type air conditioner includes being connected by pipeline
Indoor set 1 and off-premises station 2, and regulate and control indoor set 1 and the control device 3 (being not shown) of off-premises station 2 duty.
Off-premises station 2 includes blower fan 22, condenser 23, Temperature Humidity Sensor 24, spray equipment 25, pressure transducer 26 and collection
Become the refrigerated medium pump device 21 in off-premises station 2.Refrigerated medium pump device 21 includes fluid reservoir 211 and connects with fluid reservoir 211
3rd check valve 212 and the pump housing 213, and check valve is in parallel with the pump housing 213.Temperature Humidity Sensor 24 is arranged on returning of condenser 23
Wind position, for temperature and the relative humidity of measuring chamber outer air.Pressure transducer 26 is arranged on condenser 23 cold-producing medium and goes out liquid
End, is used for measuring condensed refrigerant pressure.Spray equipment 25 is close to condenser 23 and arranges, in condenser 23 windward side
Spray water mist, its form is atomizing or wet film formula.
Indoor set 1 includes that reducer, vaporizer 11, compressor 13, temperature sensor the 12, first check valve 14, second are single
To valve 16 and electromagnetic valve 15.The cold-producing medium liquid feeding end of vaporizer 11 is connected by pipeline with the liquid outlet of the cold-producing medium of off-premises station 2,
Reducer is arranged between vaporizer 11 and off-premises station 2.Temperature sensor 12 is for the air themperature of examinations indoor.Electromagnetism
Valve 15, compressor 13 and the second check valve 16 are sequentially connected in series, and its series pipe formed and the first check valve 14 are in parallel, and this is also
Connecting with vaporizer 11 in union road, the cold-producing medium liquid feeding end of parallel pipeline is connected with the cold-producing medium liquid outlet of vaporizer 11, and this is also
The cold-producing medium liquid outlet on union road is connected by pipeline with the cold-producing medium liquid feeding end of off-premises station 2 condenser 23.
The air-conditioning of the present embodiment has three kinds of mode of operations:
Pattern one: refrigerated medium pump device 21 works, the fully utilized natural cooling source of air-conditioning freezes；
Pattern two: refrigerated medium pump device 21 works with compressor 13 simultaneously, air-conditioning part utilizes natural cooling source to freeze；
Pattern three: compressor 13 works, air-conditioning does not utilize natural cooling source to freeze.
In pattern one, compressor 13 does not works, and the pump housing 213 is opened with the first check valve 14, and electromagnetic valve 15, second is unidirectional
Valve 16 cuts out with the 3rd check valve 212.The cold-producing medium flowed out after vaporizer 11 evaporates, enters room through the first check valve 14
External condenser 23, after condensation, enters fluid reservoir 211, is again introduced into indoor set 1 after the pump housing 213 supercharging, through throttling
Enter vaporizer 11 after device blood pressure lowering, constantly circulate.
In pattern two, the pump housing 213 is all opened with compressor 13, and the first check valve 14 is closed with the 3rd check valve 212, electricity
Magnet valve 15 and the second check valve 16 are opened.From compressor 13 high-temperature high-pressure refrigerant out, enter outdoor condenser 23, pass through
After condensation, enter fluid reservoir 211, through the further supercharging of the pump housing 213 laggard enter indoor set 1, after reducer blood pressure lowering enter steaming
Send out device 11, constantly circulate.
In pattern three, compressor 13 is opened, and the pump housing 213 does not works, and the first check valve 14 is closed, electromagnetic valve 15 and second
Check valve the 16, the 3rd check valve 212 is opened.From the cold-producing medium of compressor 13 High Temperature High Pressure out, enter outdoor condenser 23,
After condensation, enter fluid reservoir 211, be then passed through the 3rd check valve 212 and enter indoor set 1, through reducer reducing pressure by regulating flow
Rear entrance vaporizer 11, constantly circulates.
The switching of above-mentioned Three models is regulated and controled by controlling device 3, as it is shown in fig. 7, control device 3 to include cooling load
Than computing unit 31, fan speed regulation unit 32 and spray regulation and control unit 33.Temperature sensor 12, Temperature Humidity Sensor 24 will samplings
Data output, to controlling device 3, controls the room that the cooling load in device 3 gathers according to temperature sensor 12 than computing unit 31
It is a, then R=than R, the precision of this target temperature Ts that interior temperature T and target temperature Ts to be reached calculate indoor cooling load
(T-Ts)/a.Control device 3, before regulating and controlling, controls device 3 and has been written into the target cooling load threshold range than Rs,
Rs1≤Rs≤Rs2；According to indoor cooling load than relation than Rs of R and target cooling load, real-time indoor temperature T of machine room with
The relation of outdoor temperature Ta that Temperature Humidity Sensor 24 gathers, the operational mode of adjustment air-conditioning:
As T >=Ta, R≤Rs2, refrigerated medium pump device 21 works, the fully utilized outdoor natural cooling source refrigeration of air-conditioning；
As T >=Ta, R ＞ Rs2, refrigerated medium pump device 21 works with compressor 13 simultaneously, and air-conditioning part utilizes outdoor natural
Low-temperature receiver freezes；
As T ＜ Ta, compressor 13 works, and air-conditioning does not utilize outdoor natural cooling source refrigeration.
Such as, when T=25 DEG C；Ta=10 DEG C；Ts=24 DEG C, precision is 2；During 50%≤Rs≤120%, can be calculated
R=50%, R ＜ 120%, T ＞ Ta, refrigerated medium pump device 21 works, the fully utilized outdoor natural cooling source refrigeration of air-conditioning.
When T=28 DEG C；Ta=20 DEG C；Ts=24 DEG C, precision is 2；During 50%≤Rs≤120%, R=can be calculated
200%, R ＞ 120%, T ＞ Ta, refrigerated medium pump device 21 works with compressor 13 simultaneously, and air-conditioning part utilizes outdoor the coldest
Freeze in source.
When T=25 DEG C；Ta=28 DEG C；Ts=24 DEG C, precision is 2；During 50%≤Rs≤120%, T ＜ Ta, compressor 13
Work, air-conditioning does not utilize outdoor natural cooling source refrigeration.
For realizing more preferable energy-saving effect, the spray controlling device 3 regulates and controls unit 33 and fan speed regulation unit 32 above-mentioned
On the basis of the regulation and control of mode of operation, regulating and controlling the condensation efficiency of off-premises station 2 condensation, control methods include changing spray equipment
25 and the duty of blower fan 22.
Wherein, specific as follows to the regulation process of spray equipment 25:
Control device 3, before regulating and controlling, controls device 3 and has been written into target relative humidity RHs, outdoor critical temperature
Ta1.Control the relative humidity RH that device 3 receives the outdoor air of Temperature Humidity Sensor 24 output, and according to indoor cooling load
Ratio relation than Rs of R and target cooling load, the relation of relative humidity RH and target relative humidity RHs, outdoor temperature Ta and room
The relation of outer critical temperature Ta1, adjusts the duty of spray equipment 25；
As Ta >=Ta1, R >=Rs1 and RH≤RHs, at condensation, carry out spray process, improve refrigerating efficiency；
As R ＜ Rs1 or Ta ＜ Ta1 or RH ＞ RHs, not to carrying out spray process at condensation.
Such as, when T=25 DEG C；Ta=10 DEG C；Ta1=3 DEG C；Ts=24 DEG C, precision is 2；50%≤Rs≤120%, RH
When=60%, RHs=80%, spray equipment 25 can be controlled open, at condensation according to Ta ＞ 3 DEG C, R=50%, RH ＜ 80%
Carry out spray process, improve refrigerating efficiency.
When T=24.5 DEG C；Ts=24 DEG C, precision is 2；During 50%≤Rs≤120%, R=25%, R ＜ can be calculated
50%, directly can control to close spray equipment 25 according to this result of calculation.Because indoor temperature is controlled in target by air-conditioning
In temperature range, it is not necessary to carry out spray process at condensation, strengthen condensation effect.
When Ta=0 DEG C；Ta1=3 DEG C, directly can control to close spray equipment 25 according to this result.Because outdoor temp is spent
The low freezing point already close to water, the water of spray equipment 25 ejection easily freezes, it is impossible to reach good evaporation effect at condenser 23
Really.
Work as RH=85%, during RHs=80%, directly can control to close spray equipment 25 according to this result.Because it is outdoor wet
Degree the most enough makes condenser 23 go out to be had good evaporation and heat-exchange effect, carries out spray the most again and can not significantly improve air
Humidity and evaporation effect, so without carrying out spray process again.
Specific as follows to the regulation process of wind speed:
Control device 3, before regulating and controlling, controls device 3 and has been written into air-conditioning target condensation under different operational modes
Pressure Ps, target condensing pressure Ps include that the target condensing pressure Ps1 under fully utilized natural cooling source refrigeration mode, part utilize
Target condensing pressure Ps2 under natural cooling source refrigeration mode, the target condensing pressure not utilized under natural cooling source refrigeration mode
Ps3.It is worthy of note, for convenience of regulation and control and energy-conservation, above-mentioned target condensing pressure P is preferentially set to a threshold value, rather than one
The individual force value determined.Control device 3 receives pressure transducer 26 and exports the condensing pressure P of cold-producing medium.Control device 3 at air-conditioning
Different running statuses under, according to described condensing pressure P and the relation of target condensing pressure Ps, adjust the refrigeration effect of described air-conditioning
Rate:
As P ＜ Ps, increasing the rotating speed of blower fan 22, to improve the speed air flow at condensation, the value increasing P makes it into
The accuracy rating of Ps；
As P ＞ Ps, reducing the rotating speed of blower fan 22, reduce the speed air flow at condensation, the value reducing P makes it into Ps
Accuracy rating；
When P is in the accuracy rating of Ps, blower fan 22 rotating speed is constant.
Second embodiment:
Practical situation according to machine room location natural environment and actual refrigeration needs, can set up system in off-premises station 2
Cryogenic fluid pump device 21 and condenser 23, as in figure 2 it is shown, be provided with 2 set refrigerated medium pump devices 21 and condenser 23 fills in this off-premises station 2
Put, to realize more efficient refrigeration.It is worthy of note, the refrigerated medium pump device 21 set in off-premises station 2 and condenser 23
Device number is not necessarily mutually correspondence, can connect a set of condenser 23 with each refrigerated medium pump device 21, it is also possible to by one
Refrigerated medium pump device 21 is connected with the condenser 23 of multiple sets of parallel, and i.e. many set condensers 23 share a refrigerated medium pump device 21.
3rd embodiment:
For improving existing off-premises station 2 floor space and the problem of heat exchange efficiency further, Fig. 3 shows the air conditioning chamber of improvement
The top view of outer machine 2, this air-conditioner outdoor unit 2 includes six blower fans 22, and blower fan 22 is with 2 × 3 matrix arrangement.As shown in Figure 4, this room
Outer machine 2 is cabinet structure, and blower fan 22 is arranged horizontally in the top of cabinet, and condenser 23 is positioned at the lower section of blower fan 22, for each
What blower fan 22 was corresponding is provided with a set of condenser 23.For reducing the floor space of off-premises station 2, often set condenser 23 is by symmetrical
Two rectangular plate-like condensing tube assembly 231,232 compositions being obliquely installed, this two condensing tube assemblies 231,232 bottom offsets
" V "-shaped it is fixed on fixing seat.Condenser 23 is provided with spray equipment 25 between any two, and this spray equipment 25 is at condenser 23
Windward side spray water mist.Being the integrated cavity of refrigerated medium pump in the lower section of condenser 23, refrigerated medium pump device is arranged on cold-producing medium
In the integrated cavity of pump, its cold-producing medium liquid feeding end is connected with condenser, and liquid outlet is connected with indoor set.It is worthy of note above-mentioned spray
Can the get along well quantity of condenser 23 of the quantity of shower device 25 is corresponding, i.e. when having six set condensers 23 when, and can be only at it
In two set in set spray equipment 25.In this embodiment, it is provided with four spray equipments 25 between six set condensers 23, and this six set is cold
Condenser 23 shares a refrigerated medium pump device.Condensing tube assembly 231 in the present embodiment, 232 " V "-shaped arrangements, reducing
Heat exchange efficiency is also enhanced while off-premises station 2 volume.
For realizing more preferable heat transfer effect, this condensing tube assembly 231,232 preferably by the many parallel roundabout settings of condensing tube,
And on condensing tube surface, it is vertically arranged multiple fin, increase the surface area of condensing tube, further improving heat exchanging efficiency.
4th embodiment:
For improving existing off-premises station 2 floor space and the problem of heat exchange efficiency further, Fig. 5 shows the air conditioning chamber of improvement
The top view of outer machine 2, this air-conditioner outdoor unit 2 includes six blower fans 22, and blower fan 22 is with 3 × 2 matrix arrangement.As shown in Figure 6, this room
Outer machine 2 is cabinet structure, and blower fan 22 is arranged horizontally in the top of cabinet, and condenser 23 is positioned at the lower section of blower fan 22, for each
What blower fan 22 was corresponding is provided with a set of condenser 23.For reducing the floor space of off-premises station 2, often set condenser 23 is by two rectangles
Tabular condensing tube assembly 231,232 forms, vertical relative to blower fan 22 place plane near the condensing tube assembly 231 of cabinet side
Arranging, the condensing tube assembly 232 inside cabinet is arranged relative to blower fan 22 place planar tilt, these two condensing tube assemblies
231,232 bottoms offset and are fixed on fixed seat at bottom.The upper end of the condensing tube assembly 232 inside cabinet is with same
The upper end of horizontally-arranged another set of condenser condensing tube assembly inside cabinet offsets, and is fixed on top and fixes on seat.On
Being provided with spray equipment 25 between the condenser that end offsets, this spray equipment 25 is in condenser 23 windward side spray water mist.Cold
The lower section of condenser 23 is the integrated cavity of refrigerated medium pump, and refrigerated medium pump device is arranged in the integrated cavity of refrigerated medium pump, its cold-producing medium
Liquid feeding end is connected with condenser, and liquid outlet is connected with indoor set.It is worthy of note that the quantity of above-mentioned spray equipment 25 can be got along well
The quantity of condenser 23 is corresponding, i.e. when having six set condensers 23 when, can the most wherein two set in set spray equipment 25.
In this embodiment, between six set condensers 23, it is provided with three spray equipments 25, and this six sets condenser 23 connects a system respectively
Cryogenic fluid pump device, totally six refrigerated medium pump devices.Condensing tube assembly 231,232 in the present embodiment arranges in " W " font, is subtracting
Heat exchange efficiency is also enhanced while little off-premises station 2 volume.
For realizing more preferable heat transfer effect, this condensing tube assembly 231,232 preferably by the many parallel roundabout settings of condensing tube,
And on condensing tube surface, it is vertically arranged multiple fin, increase the surface area of condensing tube, further improving heat exchanging efficiency.
It is worthy of note, the arrangement of above-mentioned condensing tube assembly 231,232 has been realized in reducing off-premises station 2 volume
Purpose, refrigerated medium pump device 21 is integrated in the cabinet of off-premises station 2, is further to air-conditioning outdoor location floor space
Improve, and according to practical situation needs, this refrigerated medium pump device 21 can be not provided with being integrated in the cabinet of off-premises station 2, Ji Kexiang
Condenser 23 is independently arranged.
The present invention also provides for a kind of energy-saving control method, for air conditioner in machine room, enables air conditioner in machine room according to ambient temperature
With self-operating feature switching working mode.As shown in Figure 10, the key step of this control method is as follows:
S1: testing machine room indoor temperature T and outdoor temperature Ta in real time；
S2: in calculating air conditioning chamber according to the running status of air-conditioning and indoor temperature T, cooling load compares R；
S3: adjust the running status of air-conditioning, fortune according to indoor cooling load than R, machine room indoor temperature T and outdoor temperature Ta
Row state includes that fully utilized natural cooling source refrigeration, part utilize natural cooling source refrigeration and do not utilize natural cooling source three kinds of fortune of refrigeration
Row mode.
Wherein, step S2 specifically comprises the following steps that
S21: setting machine room indoor objects temperature Ts, precision is a, i.e. Ts=| Ts-a, Ts+a |；
S22: calculate the indoor cooling load of air-conditioning than R according to machine room indoor objects temperature Ts and real-time indoor temperature T, i.e.
R=(T Ts)/a.
As shown in Figure 8, step S3 specifically comprises the following steps that
S31: the target setting cooling load threshold range than Rs, i.e. Rs1≤Rs≤Rs2；
S32: according to indoor cooling load than relation than Rs of R and target refrigeration duty, real-time indoor temperature T of machine room with outdoor
The relation of temperature Ta, the operational mode of switching air-conditioning；
When T >=Ta, R≤Rs2, the fully utilized outdoor natural cooling source refrigeration of air-conditioning；
As T >=Ta, R ＞ Rs2, air-conditioning part utilizes outdoor natural cooling source refrigeration；
As T ＜ Ta, air-conditioning does not utilize outdoor natural cooling source refrigeration.
Such as, when T=25 DEG C；Ta=10 DEG C；Ts=24 DEG C, precision is 2；During 50%≤Rs≤120%, can be calculated
R=50%, R ＜ 120%, T ＞ Ta, the fully utilized outdoor natural cooling source refrigeration of air-conditioning.
When T=28 DEG C；Ta=20 DEG C；Ts=24 DEG C, precision is 2；During 50%≤Rs≤120%, R=can be calculated
200%, R ＞ 120%, T ＞ Ta, air-conditioning part utilizes outdoor natural cooling source refrigeration.
When T=25 DEG C；Ta=28 DEG C；Ts=24 DEG C, precision is 2；During 50%≤Rs≤120%, T ＜ Ta, air-conditioning is unfavorable
By outdoor natural cooling source refrigeration.
After have selected the mode of operation of air-conditioning, further by carrying out spray process regulation and control condensation efficiency at condensation.
S331: the relative air humidity RH at detection machine room outdoor return air in real time；
S341: target setting relative humidity RHs, outdoor critical temperature Ta1, and Ta1 ＞ 0 DEG C；
S351: more relative with target than relation than Rs of R and target cooling load, relative humidity RH according to indoor cooling load
The relation of humidity RHs, outdoor temperature Ta and the relation of outdoor critical temperature Ta1, adjust the refrigerating efficiency of air-conditioning；
As Ta >=Ta1, R >=Rs1 and RH≤RHs, at condensation, carry out spray process, improve refrigerating efficiency；
As R ＜ Rs1 or Ta ＜ Ta1 or RH ＞ RHs, not to carrying out spray process at condensation.
Such as, when T=25 DEG C；Ta=10 DEG C；Ta1=3 DEG C；Ts=24 DEG C, precision is 2；50%≤Rs≤120%, RH
When=60%, RHs=80%, spray equipment 25 can be controlled open, at condensation according to Ta ＞ 3 DEG C, R=50%, RH ＜ 80%
Carry out spray process, improve refrigerating efficiency.
When T=24.5 DEG C；Ts=24 DEG C, precision is 2；During 50%≤Rs≤120%, R=25%, R ＜ can be calculated
50%, directly can control to close spray equipment 25 according to this result of calculation.Because indoor temperature is controlled in target by air-conditioning
In temperature range, it is not necessary to carry out spray process at condensation, strengthen condensation effect.
When Ta=0 DEG C；Ta1=3 DEG C, directly can control to close spray equipment 25 according to this result.Because outdoor temp is spent
The low freezing point already close to water, the water of spray equipment 25 ejection easily freezes, it is impossible to reach good evaporation effect at condenser 23
Really.
Work as RH=85%, during RHs=80%, directly can control to close spray equipment 25 according to this result.Because it is outdoor wet
Degree the most enough makes condenser 23 go out to be had good evaporation and heat-exchange effect, carries out spray the most again and can not significantly improve air
Humidity and evaporation effect, so without carrying out spray process again.
After have selected the mode of operation of air-conditioning, regulate and control condensation efficiency by the speed air flow at condensation further.
S332: detect the condensing pressure P of cold-producing medium in real time；
S342: set air-conditioning target condensing pressure Ps, target condensing pressure Ps under different operational modes and include completely
The target condensing pressure Ps1 under natural cooling source refrigeration mode, part is utilized to utilize the target under natural cooling source refrigeration mode to condense
Pressure Ps2, the target condensing pressure Ps3 not utilized under natural cooling source refrigeration mode；
S352: under the different running statuses of air-conditioning, according to condensing pressure P and the relation of target condensing pressure Ps, adjusts
The refrigerating efficiency of air-conditioning；
As P ＜ Ps, increasing the rotating speed of blower fan 22, to improve the speed air flow at condensation, the value increasing P makes it into
The accuracy rating of Ps；
As P ＞ Ps, reducing the rotating speed of blower fan 22, reduce the speed air flow at condensation, the value reducing P makes it into Ps
Accuracy rating；
When P is in the accuracy rating of Ps, blower fan 22 rotating speed is constant.
It is worthy of note, for convenience of regulation and control with energy-conservation, above-mentioned target condensing pressure P is preferentially set to a threshold value, and
A non-force value determined.
To sum up, by the energy-saving type air conditioner of the present invention, the switching of control accurate mode of operation can be realized, and by condensation
The evaporation efficiency of device and the control of speed air flow, can realize more preferable energy-saving effect further, extends existing machine room empty
That adjusts utilizes the cold temperature province of nature.
It should be understood that above example only have expressed the preferred embodiment of the present invention, it describes more concrete and detailed
Carefully, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention；It should be pointed out that, for the common skill of this area
For art personnel, without departing from the inventive concept of the premise, above-mentioned technical characterstic can be carried out independent assortment, it is also possible to do
Going out some deformation and improvement, these broadly fall into protection scope of the present invention；Therefore, all done with scope of the invention as claimed
Equivalents and modification, all should belong to the covering scope of the claims in the present invention.
Claims (10)
1. the energy-saving control method of an air conditioner in machine room, it is characterised in that said method comprising the steps of:
S1: testing machine room indoor temperature T and outdoor temperature Ta in real time；
S2: in calculating air conditioning chamber according to the running status of air-conditioning and indoor temperature T, cooling load compares R；
S3: adjust the operation shape of described air-conditioning according to described indoor cooling load than R, machine room indoor temperature T and outdoor temperature Ta
State, described running status includes that fully utilized natural cooling source refrigeration, part utilize natural cooling source refrigeration and do not utilize natural cooling source
Freeze three kinds of operational modes.
Method the most according to claim 1, it is characterised in that described step S2 includes:
S21: setting machine room indoor objects temperature Ts, precision is a, i.e. Ts=| Ts-a, Ts+a |；
S22: calculate the indoor cooling load of air-conditioning than R according to described machine room indoor objects temperature Ts and real-time indoor temperature T, i.e.
R=(T Ts)/a.
Method the most according to claim 1 and 2, it is characterised in that described step S3 includes:
S31: the target setting cooling load threshold range than Rs, i.e. Rs1≤Rs≤Rs2；
S32: according to described indoor cooling load than relation than Rs of R and target refrigeration duty, real-time indoor temperature T of machine room with outdoor
The relation of temperature Ta, adjusts the running status of described air-conditioning；
When T >=Ta, R≤Rs2, the fully utilized outdoor natural cooling source refrigeration of air-conditioning；
As T >=Ta, R ＞ Rs2, air-conditioning part utilizes outdoor natural cooling source refrigeration；
As T ＜ Ta, air-conditioning does not utilize outdoor natural cooling source refrigeration.
Method the most according to claim 3, it is characterised in that described running status also includes under described three kinds of operational modes
Refrigerating efficiency, the most described step S3 also includes:
S331: detect the relative air humidity RH of machine room outdoor in real time；
S341: target setting relative humidity RHs, outdoor critical temperature Ta1, and Ta1 ＞ 0 DEG C；
S351: according to described indoor cooling load than relation, described relative humidity RH and target than Rs of R and target cooling load
The relation of relative humidity RHs, outdoor temperature Ta and the relation of outdoor critical temperature Ta1, adjust the refrigerating efficiency of described air-conditioning；
As Ta ＞ Ta1, R >=Rs1 and RH≤RHs, at condensation, carry out spray process, improve refrigerating efficiency；
As R ＜ Rs1 or Ta ＜ Ta1 or RH ＞ RHs, not to carrying out spray process at condensation.
Method the most according to claim 3, it is characterised in that running status also includes the system under described three kinds of operational modes
Cold efficiency, the most described step S3 also includes:
S332: detect the condensing pressure P of cold-producing medium in real time；
S342: set air-conditioning target condensing pressure Ps, described target condensing pressure Ps under different operational modes and include completely
The target condensing pressure Ps1 under natural cooling source refrigeration mode, part is utilized to utilize the target under natural cooling source refrigeration mode to condense
Pressure Ps2, the target condensing pressure Ps3 not utilized under natural cooling source refrigeration mode；
S352: according to described condensing pressure P and the relation of target condensing pressure Ps, adjust the refrigerating efficiency of described air-conditioning；
As P ＜ Ps, improving the speed air flow at condensation, the value increasing P makes it into the accuracy rating of Ps；
As P ＞ Ps, reducing the speed air flow at condensation, the value reducing P makes it into the accuracy rating of Ps；
When P is in the accuracy rating of Ps, do not change the speed air flow at condensation.
6. an energy-saving machine room air-conditioning, it is characterised in that including: control the room that device (3) is connected with described control device (3)
Outer machine (2), refrigerated medium pump device (21) and indoor set (1)；Described indoor set (1) include compressor (13), vaporizer (11) with
And for detecting the first sensor (12) of indoor temperature；Described off-premises station (2) includes condenser (23), blower fan (22) and uses
The second sensor (24) in detection outdoor temperature；
Described control device (3) includes that indoor cooling load is than computing unit (31)；
Described control device (3) according to indoor cooling load than computing unit (31) and first sensor (12), the second sensing
The output data of device (24) regulate and control the running status of described air-conditioning, and described running status includes:
Refrigerated medium pump device (21) works independently, and the fully utilized natural cooling source of air-conditioning freezes；
Refrigerated medium pump device (21) works with compressor (13) simultaneously, and air-conditioning part utilizes natural cooling source to freeze；
Compressor (13) works independently, and air-conditioning does not utilize natural cooling source to freeze.
Air-conditioning the most according to claim 6, it is characterised in that described off-premises station is provided with the integrated cavity of refrigerated medium pump, described
The integrated cavity of refrigerated medium pump is positioned at the lower section of condenser, and described refrigerated medium pump device (21) is arranged on described refrigerated medium pump collection coelosis
Internal, the cold-producing medium liquid feeding end of described refrigerated medium pump device (21) is connected with described condenser (23), liquid outlet and described indoor
Machine (1) is connected.
8. according to the air-conditioning described in claim 6 or 7, it is characterised in that described condenser (23) includes plate-shaped condensing tube
Assembly (231,232), described condensing tube assembly (231,232) relative to blower fan (22) place planar tilt or is vertically arranged.
Air-conditioning the most according to claim 8, it is characterised in that described second sensor (24) is for detecting air themperature simultaneously
With the psychrometer of humidity, described off-premises station (2) also includes the spray dress for condenser (23) carries out spray process
Putting (25), described control device (3) also includes that the air humidity regulation and control for gathering according to described second sensor (24) are described
Spray regulation and control unit (33) of spray equipment (25) duty.
Air-conditioning the most according to claim 8, it is characterised in that described off-premises station (2) also includes for measuring condenser
(23) pressure transducer (26) of the cold-producing medium condensing pressure of liquid outlet, described control device (3) also includes for according to described
The fan speed regulation unit (32) of sampled data regulation and control described blower fan (22) rotating speed of pressure transducer (26).
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