CN108981096A

CN108981096A - Control method, the device and system of full working scope air-treatment unit

Info

Publication number: CN108981096A
Application number: CN201810541581.8A
Authority: CN
Inventors: 刘威; 檀志恒; 陈玉华
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2018-05-30
Filing date: 2018-05-30
Publication date: 2018-12-11

Abstract

This application provides control method, the device and system of a kind of full working scope air-treatment unit, air-treatment unit includes at least air conditioner unit AHU control cabinet and refrigeration system, refrigeration system can carry out refrigerating operaton using at least two refrigeration modes, this method comprises: AHU control cabinet obtains the first parameter information, which is parameter information relevant to external environment；The first refrigeration mode is determined from least two refrigeration modes of the refrigeration system according to first parameter information；It controls the refrigeration system and carries out refrigerating operaton using first refrigeration mode, different environmental conditions can be directed to, rationally meet refrigeration demand using fresh air natural cold quantity, realize smoothly switching for each operating condition.

Description

Control method, the device and system of full working scope air-treatment unit

Technical field

This application involves information technology fields, and more particularly, to a kind of full working scope air-treatment unit controlling party Method, device and system.

Background technique

With the arrival of information age, data center is more and more, also increasing to the demand of electric power.In data In the total energy consumption at center, the energy consumption of refrigeration system accounts for about the 40% of total energy consumption, so selecting suitable refrigeration scheme to drop The energy consumption of low data center and energy-saving and emission-reduction are most important.

When outdoor climate conditions allow, carrying out refrigeration using computer room of the natural energy resources to data center is following one kind Trend.Such as under cold weather conditions, the direct ventilation technology generation naturally cold using fresh air is can be used in the computer room of data center For tradition machinery refrigeration system.In view of computer room has certain requirement to room temperature and air purity, when air quality difference and pole It holds under weather conditions (such as sandstorm or air are chemically contaminated situation), fresh air refrigerating technology should be able to also guarantee computer room system Cold demand.

In the case where outdoor weather condition is changeable, for the refrigeration system naturally cold using fresh air, fresh air is made full use of How to realize that cooling condition automatically switches the solution party for not having mature yet at present to match computer room refrigeration demand while refrigeration Case.

Summary of the invention

The application provides control method, the device and system of a kind of full working scope air-treatment unit, can be directed to different Environmental condition rationally meets refrigeration demand using fresh air natural cold quantity, realizes smoothly switching for each operating condition.

In a first aspect, providing a kind of method for controlling air-treatment unit, which includes at least air Processing unit AHU control cabinet and refrigeration system, the refrigeration system can carry out refrigerating operaton using at least two refrigeration modes, should Method includes:

AHU control cabinet obtains the first parameter information, which is parameter information relevant to external environment；

AHU control cabinet determines the first system according to first parameter information from least two refrigeration modes of the refrigeration system Cold mode；

AHU control cabinet controls the refrigeration system and carries out refrigerating operaton using first refrigeration mode.

Through the above technical solutions, the application proposes a kind of full working scope AHU air treatment system, including at least two refrigeration The refrigeration system of mode, the refrigeration system can use fresh air refrigerating mode, fresh air+auxiliary machinery refrigeration mode, fresh air and return Wind mixing refrigerating mode, full return air+indirect heat exchange refrigeration mode, any refrigeration mode in full return air+mechanical refrigeration mode, A kind of Controlling model is established for this full working scope AHU air treatment system, while improving fresh air utilization efficiency, can be coped with Computer room refrigeration demand under the conditions of Different climate.

It should be understood that being directed to different external environments, if only utilizing a kind of refrigeration mode, freeze to the cabinet of computer room Operation will cause the waste of resource, and the effect freezed cannot guarantee that and just meet current duty requirements.For example, hot The summer of high temperature, ambient temperature reach 39 DEG C or so, generally can be using pressure in order to guarantee the normal work of calculator room equipment Mechanical refrigeration mode is freezed, and maintains 18~28 DEG C to control temperature in computer room.But for cold winter, if room Outer temperature has already decreased to 0 DEG C~5 DEG C, be to freezing in computer room, if continuing to carry out using positive mechanical refrigeration mode Refrigeration, is bound to cause consuming excessively for the energy.At this point, if the fresh air cooling capacity in the reasonable utilization external world is come to progress heat in computer room Exchange cooling, to a certain extent can be energy saving.

Optionally, refrigeration system provided by the embodiments of the present application can carry out refrigeration fortune using at least two refrigeration modes Row, i.e., the refrigeration system can support a variety of refrigeration modes to coexist, and perhaps select a use or cooperation uses.It should be understood that this Shen It please include but is not limited to this.

With reference to first aspect, in certain implementations of first aspect, when first parameter information includes external environment Temperature, humidity, air particle concentration, at least one of chemical pollutant concentration parameter information.

AHU control cabinet 101 needs to be determined according to certain parameter information to be directed to current operating condition, it should which be specifically chosen Kind refrigeration mode.

With reference to first aspect with above-mentioned implementation, in certain implementations of first aspect, first parameter information It is the temperature information of external environment, the AHU control cabinet is according to first parameter information from least two refrigeration of the refrigeration system The first refrigeration mode is determined in mode, comprising: the AHU control cabinet first range and institute according to locating for the temperature of the external environment The corresponding relationship for stating the refrigeration mode of refrigeration system determines first refrigeration from least two refrigeration modes of the refrigeration system Mode.

Specifically, for different temperature informations, multiple temperature ranges are divided, different temperature ranges selects different systems Cold mode achievees the purpose that flexibly to switch refrigeration mode.

With reference to first aspect with above-mentioned implementation, in certain implementations of first aspect, when first range is When temperature range greater than 25 DEG C, which determines that first refrigeration mode is fresh air and the refrigeration for assisting mechanical refrigeration Mode；Or

When first range is greater than 18 DEG C and is less than or equal to 25 DEG C of temperature range, which determines should First refrigeration mode is all-fresh air refrigeration mode；Or

When first range is greater than 5 DEG C and is less than or equal to 18 DEG C of temperature range, the AHU control cabinet determine this One refrigeration mode is that fresh air and return air directly exchange heat refrigeration mode；Or

When first range is less than or equal to 5 DEG C of temperature range, which determines first refrigeration mode For fresh air and return air indirect heat exchange refrigeration mode.

With reference to first aspect with above-mentioned implementation, in certain implementations of first aspect, first parameter information The air particle concentration information of external environment, the AHU control cabinet according to first parameter information from the refrigeration system to The first refrigeration mode is determined in few two kinds of refrigeration modes, comprising: when the air particle concentration of external environment is greater than or equal to the When one preset threshold, which determines that first refrigeration mode is full return air and the refrigeration mode for assisting mechanical refrigeration.

Specifically, when external environment sandstorm weather, it is default that sensor detects that particulate in air concentration is already higher than Threshold value, such as range higher than PM10 is 0.656~8.490, and under this sandstorm weather, particulate in air concentration is very Height meets room temperature, humidity requirement using full return air+auxiliary machinery refrigeration mode at this time.

With reference to first aspect with above-mentioned implementation, in certain implementations of first aspect, first parameter information The chemical pollutant concentration information of external environment, the AHU control cabinet according to first parameter information from the refrigeration system to The first refrigeration mode is determined in few two kinds of refrigeration modes, comprising: when the chemical pollutant concentration of external environment is greater than or equal to the When two preset thresholds, which determines that first refrigeration mode is fresh air and return air indirect heat exchange refrigeration mode.

Specifically, when outdoor air molecule chemical machine pollutant AMC pollutes but temperature is lower, in order to avoid chemical contamination Object causes equipment fault in computer room, meets the requirement of room temperature and humidity using indirect heat exchange mode.

Optionally, when extraneous chemical contamination is serious and to corrode volatile substance pollution, such as situations such as chlorine leakage, this When room temperature, humidity requirement can be met using full return air+auxiliary machinery refrigeration mode, simultaneously according to the mode of situation five Prevent chemical contamination.

With reference to first aspect with above-mentioned implementation, in certain implementations of first aspect, this method further include: should AHU control cabinet obtains the second parameter information, which is parameter information relevant to the air-treatment unit；It should AHU control cabinet corrects refrigerating capacity according to second parameter information, the refrigerating operaton refrigerating capacity be the refrigeration system using this first Refrigerating capacity when refrigeration mode is run.

Optionally, which can also obtain the second parameter information, which is and the air-treatment The relevant parameter information of unit.For example, second parameter information is the temperature of computer room air-supply, air draft and return air, cold and hot channel pressure The information such as difference, the temperature difference, indoor external differential.

Determine AHU control cabinet from a variety of refrigeration modes of the refrigeration system it should be understood that the second parameter information can not be Determine the refrigeration mode that current working uses, but second parameter information can feed back AHU control cabinet, so that AHU Control cabinet can be controlled by controlling opening degree, opening time or air output of each valve etc. into computer room Refrigerating capacity, to adjust the temperature and humidity in computer room.

It is described under a variety of external environmental conditions in detail above, the various possible work of full working scope AHU control system Model.During concrete implementation, AHU control cabinet first passes through more essential sensors and multi-channel data recorder etc. and obtains room Outer parameter information realizes the multi-parts joint control such as air-valve, primary air fan, secondary air fan, exhaust blower further according to outdoor parameter information Operating condition switching, selection precision is higher in terms of the opening/closing time of valve and aperture control, swift execution and control mechanism, makes Operating condition switching is quick, settles at one go.After the completion of each operating condition switching, AHU control cabinet can finely tune air-valve, water according to air-supply target value The aperture and blower of valve, secondary side (indoor) air output are controlled according to the temperature difference or pressure difference of cold and hot interchannel, a crosswind Machine (outside) is controlled by primary side supply air temperature, and exhaust air rate (exhaust blower) is controlled according to indoor external differential.

Second aspect provides a kind of device, which is applied in air-treatment unit, and the air-treatment unit is at least Including refrigeration system, which can carry out refrigerating operaton using at least two refrigeration modes, which includes:

Acquiring unit, for obtaining the first parameter information, which is parameter letter relevant to external environment Breath；

Processing unit, for determining the from least two refrigeration modes of the refrigeration system according to first parameter information One refrigeration mode；

Control unit carries out refrigerating operaton using first refrigeration mode for controlling the refrigeration system.

In conjunction with second aspect, in certain possible implementations, first parameter information include external environment temperature, At least one of humidity, air particle concentration, chemical pollutant concentration parameter information.

In conjunction with second aspect and above-mentioned implementation, in certain possible implementations, which is outer The temperature information of boundary's environment, the processing unit are also used to: the first range and the system according to locating for the temperature of the external environment The corresponding relationship of the refrigeration mode of cooling system determines the first refrigeration mould from least two refrigeration modes of the refrigeration system Formula.

In conjunction with second aspect and above-mentioned implementation, in certain possible implementations, when first range is greater than When 25 DEG C of temperature range, which determines that first refrigeration mode is fresh air and the refrigeration mode for assisting mechanical refrigeration； Or when first range is greater than 18 DEG C and is less than or equal to 25 DEG C of temperature range, which determines first refrigeration Mode is all-fresh air refrigeration mode；Or when first range is greater than 5 DEG C and is less than or equal to 18 DEG C of temperature range, at this Reason unit determines that first refrigeration mode is that fresh air and return air directly exchange heat refrigeration mode；Or when first range is less than or waits When 5 DEG C of temperature range, which determines that first refrigeration mode is fresh air and return air indirect heat exchange refrigeration mode.

In conjunction with second aspect and above-mentioned implementation, in certain possible implementations, which is outer The air particle concentration information of boundary's environment, the processing unit are also used to: when the air particle concentration of external environment is greater than or When equal to the first preset threshold, determine that first refrigeration mode is full return air and the refrigeration mode for assisting mechanical refrigeration.

In conjunction with second aspect and above-mentioned implementation, in certain possible implementations, which is outer The chemical pollutant concentration information of boundary's environment, the processing unit are also used to: when the chemical pollutant concentration of external environment is greater than or When equal to the second preset threshold, determine that first refrigeration mode is fresh air and return air indirect heat exchange refrigeration mode.

In conjunction with second aspect and above-mentioned implementation, in certain possible implementations, which is also used to obtain The second parameter information is taken, which is parameter information relevant to the air-treatment unit；The processing unit is also used In correcting refrigerating capacity according to second parameter information, which is that the refrigeration system is freezed using first refrigeration mode The refrigerating capacity generated when operation.

The third aspect provides a kind of control air-treatment unit, comprising: refrigeration system, the refrigeration system can utilize At least two refrigeration modes carry out refrigerating operaton；Air conditioner unit AHU control cabinet, the AHU control cabinet is for executing above-mentioned the And first aspect any one control method on the one hand.

Fourth aspect, provides a kind of computer program product, and the computer program product includes: computer program generation Code, when the computer program code is run on computers, so that computer executes above-mentioned first aspect and first party The possible method of any one of face.

5th aspect, provides a kind of computer-readable medium, and the computer-readable medium storage has program code, when When the computer program code is run on computers, so that computer executes times of above-mentioned first aspect and first aspect It anticipates a kind of possible method.

6th aspect, provides a kind of chip system, which includes processor, for supporting that AHU control cabinet is real Any one possible method of existing above-mentioned first aspect and first aspect, for example, obtaining, processing, or the control above method Involved in parameter information.In a kind of possible design, the chip system further includes memory, the memory, is used In the necessary program instruction of preservation AHU control cabinet and data.The chip system can be made of chip, also may include chip and Other discrete devices.

Detailed description of the invention

Fig. 1 is full working scope AHU control system schematic diagram provided by the embodiments of the present application.

Fig. 2 is the schematic flow of the control method of an example full working scope air-treatment unit provided by the embodiments of the present application Figure.

Fig. 3 is the schematic diagram of an example refrigeration mode provided by the embodiments of the present application.

Fig. 4 is the schematic diagram of another example refrigeration mode provided by the embodiments of the present application.

Fig. 5 is the schematic diagram of another example refrigeration mode provided by the embodiments of the present application.

Fig. 6 is the schematic diagram of an example refrigeration mode provided by the embodiments of the present application.

Fig. 7 is an example full working scope AHU control device schematic block diagram provided by the embodiments of the present application.

Specific embodiment

Below in conjunction with attached drawing, the technical solution in the application is described.

Heat is set to be transferred to the lower substance of temperature (or ring from the higher substance of temperature (or environment) using outside energy Border) system be called refrigeration system.Currently, the refrigeration system of data center has a mechanical refrigeration system, i.e., by mechanism or Thermodynamic activity makes refrigeration working medium generating state change phase transformation, completes refrigeration cycle, and temperature rise or phase using working medium at low temperature Change is freezed.Mechanical refrigeration system needs to consume a large amount of electric power.Such as background technique introduction, in order to it is energy saving, reduce energy Consumption, carrying out refrigeration using computer room of the natural energy resources to data center is a kind of following development trend.

For example, being freezed using the naturally cold direct ventilation technology of fresh air, fresh air is naturally cold under cold weather conditions But it is also referred to as " directly ventilation ".Specifically, achieve the purpose that take away indoor heat using the air circulation of fresh air.Fresh air is room Natural wind in addition, it is different and different with season relative to the temperature of indoor air.If outdoor using season difference The different otherness of air themperature obtains cooling capacity for refrigeration system, reduces the operation energy consumption of refrigeration system to obtain energy-saving effect. Meanwhile increasing fresh air volume can also improve indoor air quality.Several different refrigeration systems are described below.

1, all-air system

It take regular air processing unit (air handle unit, AHU) (containing refrigeration coil) as the full air of capital equipment System, the primary retirn air for generally comprising using all-fresh air the all-fresh air operating condition freezed, being freezed using fresh air and return air mixing Operating condition and the full return air operating condition freezed using full return air, control mode is generally according to out door climatic parameter and Indoor Temperature Humidity switching adjusts new air-valve, air returning valve, exhaust valve, exhaust blower operating status to realize the conversion of operating condition.

2, indirect evaporation refrigerating system

It does not contact, leads to by the indirect evaporation refrigerating system of capital equipment, fresh air side and indoor return air side of indirect evaporation AHU It crosses heat exchanger and carries out heat exchange, take away indoor heat, provide refrigeration for computer room.It should be understood that air to be processed not with evaporation Moisture directly contacts, and can pass through the forms such as heat exchanger heat exchange, indirect evaporation coil heat exchange.Here heat exchanger will can directly evaporate The cooling capacity of cooling obtained humid air passes to air to be processed, thus realize air etc. wet temperature-fall period.

Fresh air side has evaporation-refrigeration device, and there are dry cooling condition and wet cooling condition, operating condition switching control is related to dry work Heat exchange under condition, heat exchange under wet cooling condition, dry cooling condition exchange heat+assist mechanical refrigeration, and wet cooling condition exchanges heat+assist the operating conditions such as mechanical refrigeration.

3, direct sweat cooling system

Directly to evaporate direct sweat cooling system of the AHU as capital equipment, as common AHU increases direct evaporator section, It contacts air to be processed directly with evaporation water, the forms such as spray chamber, wet-film humidifying, spraying humidification can be passed through.

Its controlled load case, which includes all-fresh air operating condition, all-fresh air ,+directly sweat cooling operating condition, all-fresh air+directly evaporates+and it is auxiliary Help mechanical refrigeration operating condition, primary retirn air operating condition (fresh air and return air mixing), full return air operating condition+auxiliary mechanical refrigeration, controlled load case It is complex.

Thermal property is inhaled when it should be understood that sweat cooling mainly generating variation using moisture evaporation phase here reaches refrigeration effect Fruit, such as wet-bulb temperature is lower, can reach preferable refrigeration effect under air dried operating condition.Heat exchange about refrigeration Journey, the prior art comparative maturity, the application, which is not done, excessively to be repeated.

Each system condition of above-mentioned introduction is relatively single, and reply scene is not complete, when environmental change is larger or different Under weather conditions, the refrigeration demand of computer room cannot be coped with.Once such as sandstorm weather or outdoor generation chemical contamination, it is conventional AHU is that the all-air system of capital equipment and direct sweat cooling system will be unable to reach refrigeration effect using outdoor fresh air. And indirect evaporation refrigerating system, in the case where fresh air is all right, fresh air utilization efficiency is low with respect to direct ventilation.In addition, having directly The unit of sweat cooling system or indirect evaporation hair refrigeration system is in water resources shortage area and is not suitable for.

Based on the above situation, for the region of some very colds in the north, according to annual Different climate condition, the application is mentioned A kind of full working scope AHU air treatment system, the refrigeration system including at least two refrigeration modes, the refrigeration system can use out Fresh air refrigerating mode, fresh air+auxiliary machinery refrigeration mode, fresh air and return air hybrid refrigeration mode, full return air+indirect heat exchange refrigeration Any refrigeration mode in mode, full return air+mechanical refrigeration mode is established for this full working scope AHU air treatment system A kind of Controlling model can cope with the computer room refrigeration demand under the conditions of Different climate while improving fresh air utilization efficiency.

It should be noted that "and/or" describes the incidence relation of affiliated partner, and expression can deposit in the application implementation In three kinds of relationships, for example, A and/or B, can indicate: individualism A exists simultaneously A and B, these three situations of individualism B. Character "/" typicallys represent the relationship that forward-backward correlation object is a kind of "or"."at least one" refers to one or more；" A and At least one of B " is similar to " A and/or B ", describes the incidence relation of affiliated partner, indicates may exist three kinds of relationships, example Such as, at least one of A and B can be indicated: individualism A, exist simultaneously A and B, these three situations of individualism B.Below It will be described in detail with reference to the accompanying drawings technical solution provided by the present application.

Fig. 1 is full working scope AHU control system schematic diagram provided by the embodiments of the present application.As shown in Figure 1, control system 100 Including at least AHU control cabinet 101, outdoor weather station 102, computer room 103, cabinet 104, filter 105, heat exchanger 106, cooling coil 107, plenum chamber 108, primary air fan 109, secondary air fan 110 and the switch or valve that are configured at aforementioned each structure or device Door, attachment device or connection line in system, the monitorings such as sensor, display or detection device etc., it should be appreciated that the application weight Point introduces relevant to the Controlling model of full working scope AHU refrigeration system provided by the present application unit or component, it is other with it is existing The relevant content the application of technology does not repeat excessively.

AHU control cabinet 101 is the key process unit of the system 100, is mainly used for controlling each portion of the refrigeration system Coordination between part or structure, to realize smoothly switching for each operating condition, guarantee under each operating condition supply air temperature, Humidity and the pressure field in room all in the reasonable scope, for example, by the control of the temperature of computer room 103 at 18~28 DEG C, relative humidity Control is 20%~80%.AHU control cabinet 101 can receive various adjustings or feedback signal, such as from outdoor weather station The data of 102 more essential sensors and multi-channel data recorder record, using the digital signal formed after electric treatment, or Person is by signals such as the temperature of computer room air draft and return air, pressure etc., it should be appreciated that the application includes but is not limited to this.

Outdoor weather station 102 is for monitoring environmental change, and Weather station apparatus is mainly by more essential sensors and multichannel number It is formed according to recorder, accessory can match wireless transmission function, solar powered and mounting bracket, can also be according to customer demand Customization.Current weather station is mostly automatic weather station, is controlled by electronic equipment or by computer, it is automatic carry out meteorological observation and The weather station of data collection transmission.General weather station includes barometer, thermometer, hygrometer, rainfall gauge, airspeedometer, humidity Meter, wind vane, ambient particle object concentration detector, chemical contamination detector etc..More essential sensors at outdoor weather station 102 and Multi-channel data recorder can by the temperature of fresh air, air pressure, humidity, air particle, chemical pollutant concentration in environment, with And in supply air temperature, blasting humidity, supply air temperature difference, the return air temperature difference, cabinet disengaging leeway, indoor external differential, outdoor and air hose The parameter informations such as pressure difference are transferred to AHU control cabinet 101.

There is cabinet 104 in the computer room 103 of data center, what the reception plenum chamber 108 of cabinet 104 was sent into is used to keep Indoor Temperature The wind of degree or pressure.For example, AHU control cabinet 101 controls plenum chamber 108 and is sent into cooling wind when temperature is higher than 28 DEG C in computer room, For reducing temperature；When computer room temperature is lower than 18 DEG C, AHU control cabinet 101 controls plenum chamber 108 and is sent into heating wind, for protecting Hold room temperature.Computer room further includes air exhausting device, for room air to be discharged, keeps indoor air pressure in a certain range.

Filter 105 is installed in refrigeration systems, for being filtered to the fresh air for entering refrigeration system.For example, when into It include impurity or sand and dust in the fresh air entered, filter 105 can be filtered impurity, purifying fresh air.The filter of filter 105 Core can be replaced periodically.It should be understood that although filter 105 can purify certain fresh air, when outdoor for for a long time When sandstorm weather, need constantly to replace the filter core of filter, otherwise certain sand and dust may influence the normal work of system, Therefore, the bad weathers such as sandstorm do not use fresh air generally to carry out the temperature of computer room and adjust.

The cooling capacity of cooling obtained air can be passed to air to be processed by heat exchanger 106, to realize air Exchange heat temperature-fall period.Heat exchanger can handle fresh air and the mixed air of return air, can also be single under certain working condition It stays alone and manages fresh air or individually handle return air.

Cooling coil 107 is mounted in auxiliary refrigeration device, such as is filled by the mechanical refrigeration of mechanism or thermodynamic activity It sets, changes refrigeration working medium generating state, to complete refrigeration cycle.For example, for certain working condition, certainly using fresh air So cold direct ventilation technology is freezed when not being able to satisfy current demand, needs mechanical refrigeration to carry out assisted refrigeration, to guarantee computer room Interior temperature is in a certain range.Specifically, cooling coil 107 can be turned on or off under the control of AHU control cabinet 101 Water valve 115 (water value, WV), and the aperture of WV 115 is adjusted to control the water into cooling coil, to carry out temperature The adjusting of degree.

Plenum chamber 108 receives treated refrigeration wind, and by the temperature T of the refrigeration wind, relative humidity (relative Humidity, RH) AHU control cabinet 101 is fed back to, AHU control cabinet 101 can be carried out according to temperature, humidity of the refrigeration wind etc. Control.It should be understood that " refrigeration wind " mentioned here refers to and will enter computer room, for adjusting the wind of temperature in computer room, it is also possible to when When temperature is lower than preset 18 DEG C in computer room, which can also refer to " heating wind ", i.e., for improving the temperature in computer room, guarantee Temperature is at 18~28 DEG C in computer room, and different titles does not cause any restrictions to the application here, all that the application is utilized The scheme of the Controlling model of offer is within the scope of protection of this application.

Primary air fan 109 just exchanges heat when being sent into the fresh air come and return air without directly contacting, after the completion of heat exchange, Fresh air after heat exchange is discharged by primary air fan 109, exhaust valve (exhaust air value, EV) 114.It should be understood that primary Blower 109 also receives the control of AHU control cabinet 101.

Secondary air fan 110, when being sent into the fresh air come and return air progress direct contact heat transfer, i.e. fresh air passes sequentially through new air-valve (fresh air value, FV) 111 and new air-valve FV2, into inside refrigerator.Fresh air and return air are mixed, heat exchange After the completion, plenum chamber is sent by secondary air fan.

System 100 further include new air-valve FV1, new air-valve FV2, air returning valve RV, exhaust valve EV, exhaust blower VFD, water valve WV with And the valves such as blow valve SV, these valves can be controlled by AHU control cabinet 101.In addition to this, this system 100 is gone back Including connection circuit shown in figure, D/A converting circuit etc., details are not described herein again.

In addition it is also necessary to which " First air side " is also named in explanation, the fresh air side of the application, indoor return air side is also named " secondary Wind side ", it should be appreciated that the transformation called in description should not cause to limit to the technical solution of the application.

For the full working scope AHU control system that Fig. 1 is provided, the application provides a kind of full working scope AHU Controlling model, realizes each Operating condition smoothly switches, and guarantees the pressure field of supply air temperature, humidity and room under each operating condition in the reasonable scope.Under The utilization for the model under different scenes is discussed in detail in face, for example, with the model by room temperature control at 18~28 DEG C, Relative humidity control is illustrated 20%~80% for target.

Fig. 2 is the schematic stream of the control method 200 of an example full working scope air-treatment unit provided by the embodiments of the present application Cheng Tu.This method 200 can be applied to the AHU control cabinet 101 of above-mentioned full working scope AHU control system 100, below with reference to Fig. 1's The schematic flow chart of middle full working scope AHU control system 100 and the method 200 of Fig. 2 is described in detail, it should be appreciated that the application Embodiment is not limited to this.

As shown in Fig. 2, this method 200 includes the following contents.

In step 210, AHU control cabinet obtains the first parameter information, which is related to external environment Parameter information.

AHU control cabinet 101 needs to be determined according to certain parameter information to be directed to current operating condition, it should which be specifically chosen Kind refrigeration mode.For example, the first parameter information of the application, optionally, first parameter information include external environment temperature, At least one of humidity, air particle concentration, chemical pollutant concentration parameter information.

Specifically, AHU control cabinet 101 needs to obtain the data of more essential sensors and multi-channel data recorder record, For example, the parameter information from outdoor weather station 102 as shown in Figure 1, using the digital signal formed after electric treatment, These the available parameter informations of AHU control cabinet 101.

Optionally, which can also obtain the second parameter information, which is and the air-treatment The relevant parameter information of unit.For example, second parameter information is by temperature, the cold and hot channel of computer room air-supply, air draft and return air The information such as pressure difference, the temperature difference, indoor external differential.

Determine AHU control cabinet from a variety of refrigeration modes of the refrigeration system it should be understood that the second parameter information can not be Determine the refrigeration mode that current working uses, but second parameter information can feed back AHU control cabinet, so that AHU Control cabinet can be controlled by controlling opening degree, opening time or air output of each valve etc. into computer room Freeze air quantity, to adjust the temperature and humidity in computer room.

In a step 220, AHU control cabinet is according to first parameter information from least two refrigeration modes of the refrigeration system Middle the first refrigeration mode of determination.

Optionally, which is the temperature information of external environment, which can be according to external world's ring First range locating for the temperature in border determines first refrigeration mode from least two refrigeration modes of the refrigeration system.That is, For different temperature informations, multiple temperature ranges are divided, different temperature ranges selects different refrigeration modes, reaches flexible Switch the purpose of refrigeration mode.

Optionally, which is the air particle concentration information of external environment, when the air of external environment When particle concentration is greater than or equal to the first preset threshold, which determines that first refrigeration mode is full return air and auxiliary Help the refrigeration mode of mechanical refrigeration.

Optionally, which is the chemical pollutant concentration information of external environment, when the chemistry of external environment When pollutant concentration is greater than or equal to the second preset threshold, which determines that first refrigeration mode is fresh air and return air Indirect heat exchange refrigeration mode.

In step 230, AHU control cabinet controls the refrigeration system and carries out refrigerating operaton using first refrigeration mode.

Optionally, which carries out refrigerating operaton using the first refrigeration mode determined by above method.It should AHU control cabinet can also obtain the second parameter information, which is parameter letter relevant to the air-treatment unit Breath.The AHU control cabinet corrects refrigerating capacity according to second parameter information, which is that the refrigeration system utilizes first refrigeration Mode carries out the refrigerating capacity of generation when refrigerating operaton.

Optionally, which is temperature, the cold and hot channel pressure difference, the temperature difference, room of computer room air-supply, air draft and return air The information such as inside and outside differential pressure.

It should also be understood that controlled in above-described embodiment by the opening degree of control valve, opening time, air output etc. into Enter the refrigeration air quantity in computer room, to adjust the temperature and humidity in computer room.During specifically realizing, such as when in computer room Temperature, at this point, the control of AHU control cabinet reduces the opening degree of valve, such as reduces the unlatching journey of blow valve fastly close to 18 DEG C Degree, to reduce air output, reduces refrigerating capacity, is unlikely to make temperature in computer room too low.It should be understood that the application includes but unlimited In this.According to the control method of above method 200, lower mask body is described in detail from several possible different situations.

Situation one

When ambient temperature is relatively high, for example, the refrigeration is by hot summer environment, full working scope AHU control system System is set as fresh air+auxiliary machinery refrigeration mode.For example, when hot summer, at 25 DEG C of 39 DEG C >=outdoor temperature >, whether The return air of extraneous fresh air or computer room, temperature is in contrast all in very high state.At this time, it may be necessary to assist mechanical refrigeration system It participates in adjusting, i.e., leads directly to+assist mechanical refrigeration modes using fresh air and meet room temperature, humidity requirement.Specifically, such as Fig. 3 institute The valve state control of the schematic diagram shown, each equipment is as shown in table 1 below.

Table 1

Dotted line represents the source of refrigeration wind in Fig. 3 and ambient temperature information is passed to full work by trend, temperature sensor Condition AHU control cabinet 101, full working scope AHU control cabinet 101 according to analysis and Control new air-valve FV1, the new air-valve FV2 of Controlling model at In the mode of opening, extraneous fresh air enters inside refrigeration system according to route shown in dotted line in Fig. 3, by assisting mechanical refrigeration apparatus The forced cooling of (for example, cooling coil 107 in figure), fresh air are changed into the refrigeration wind of lower temperature, are entered by blow valve SV To plenum chamber 108.

Plenum chamber 108 receives the control of AHU control cabinet 101, such as the opening degree of control valve, opening time, air-supply Amount etc. is controlled into the refrigeration air quantity in computer room, to adjust the temperature and humidity in computer room.Specifically, the cabinet in computer room Outlet temperature T₂With the temperature T of cabinet entrance₁AHU control cabinet 101 will be transmitted to.AHU control cabinet 101 can pass through the T₁、 T₂Temperature difference and plenum chamber calculation of air quantity heat, which is the refrigeration to make cabinet temperature be maintained at 18~28 DEG C The heat that wind is taken away.

In addition, the air pressure etc. in 101 real-time monitoring computer room of AHU control cabinet, when the refrigeration being sent into computer room because of plenum chamber When wind causes air pressure to increase, AHU control cabinet 101 can control air exhauster VFD 118 and certain air is discharged, to guarantee air pressure In a certain range.

It should be understood that the "ON" in table 1 indicates valve opening state, " closing " indicates valve-closed state, and " adjusting " indicates It is adjusted by AHU control cabinet 101, for the amendment such as temperature, humidity, guarantees more accurate temperature control.It is described below and contains Justice is identical to be repeated no more.

Situation two

When ambient temperature is not high, for example, environment of hot spring and autumn conditioning in Transition Season, full working scope AHU control system should Refrigeration system is set as all-fresh air and leads directly to refrigeration mode.For example, the season in spring and autumn of proper temperature, temperature compare lower than in computer room Target temperature, at 18 DEG C of 25 DEG C >=outdoor temperature >, refrigeration modes are led directly to using fresh air and meet room temperature, humidity requirement. Specifically, it is also referred to schematic diagram shown in Fig. 3, the valve state control of each equipment is as shown in table 2 below.

Table 2

Dotted line represents source and the trend of refrigeration wind in Fig. 3, and the difference with situation one is, needs not move through auxiliary machine The participation of tool refrigeration system directly carries out heat exchange by air in fresh air and computer room to reduce the air themperature in computer room.Temperature It spends sensor and ambient temperature information is passed into full working scope AHU control cabinet 101, full working scope AHU control cabinet 101 is according to Controlling model Analysis and Control new air-valve FV1, new air-valve FV2 be in opening mode, for extraneous fresh air according to route shown in dotted line in Fig. 3 enter Inside refrigeration system, under such operating condition, the forced cooling of auxiliary mechanical refrigeration apparatus is needed not move through, it can close in figure Cooling coil 107, fresh air directly pass through blow valve SV and enter plenum chamber 108.Plenum chamber

Situation three

When ambient temperature is relatively low, for example, season early winter, full working scope AHU control system set the refrigeration system For fresh air and return air hybrid refrigeration mode.For example, when nice and cool first winter seasonal, at 5 DEG C of 18 DEG C >=outdoor temperature >, room at this time Outer temperature is relatively low, can not directly adopt lower fresh air, but fresh air and return air hybrid mode is used to meet room Temperature, humidity requirement.Specifically, the valve state control of schematic diagram as shown in Figure 4, each equipment is as shown in table 3 below.

Table 3

Fine dotted line represents source and the trend of return air in Fig. 4, and return air and fresh air are after directly contacting by heat exchanger Temperature exchange, be fed to plenum chamber by secondary air fan.Ambient temperature information is passed to full working scope AHU by temperature sensor Control cabinet 101, full working scope AHU control cabinet 101 are in opening mode, fresh air according to the analysis and Control new air-valve FV1 of Controlling model Valve FV2 is in opening or shaping modes.Because new air temperature at this time is lower, the normal temperature than setting in computer room is low, The refrigeration that fresh air may not have been needed when close to 5 DEG C may also need certain fresh air when outdoor temperature is close to 18 DEG C Amount to cooling down in computer room, so, new air-valve FV2 here, which is in, to be opened or shaping modes, different to better adapt to Duty requirements achieve the effect that preferably to control temperature.

Optionally, refrigeration air quantity here can be used in " the heating air quantity " that improves computer room temperature, for example, when in computer room When temperature is lower than 18 DEG C, at this point, new air-valve FV2 is closed in the control of AHU control cabinet 101, air returning valve RV is opened, passes through returning for higher temperatures Wind adjusts computer room temperature in a certain range.

Situation four

When ambient temperature is very low, for example, the refrigeration system is set as by season severe winter, full working scope AHU control system Fresh air and return air indirect refrigeration mode.For example, working as season severe winter of severe cold, when outside air temperature≤5 DEG C, using fresh air and return Wind indirect heat exchange mode, outdoor temperature is very low at this time, and room temperature can be met by fresh air and return air indirect heat exchange Degree, humidity requirement.Specifically, the valve state control of schematic diagram as shown in Figure 5, each equipment is as shown in table 4 below.

Table 4

Two different dotted lines represent the trend of fresh air and return air in Fig. 5, and temperature sensor passes ambient temperature information Full working scope AHU control cabinet 101 is passed, full working scope AHU control cabinet 101 is according to the analysis and Control new air-valve FV1 of Controlling model Opening mode, new air-valve FV2 are in close pattern, and route shown in dotted line of the extraneous fresh air according to coarseness in Fig. 5 enters refrigeration Internal system, return air enter inside refrigeration system according to route shown in dotted line fine-grained in Fig. 5, and fresh air and return air is not to contact I.e. the mode of indirect heat exchange carries out heat exchange in heat exchanger.It is arranged later by the fresh air after heat exchange process by exhaust valve EV Out, the return air after heat exchange process enters plenum chamber 108 by blow valve SV.

Situation five

When external environment sandstorm weather, sensor detects that particulate in air concentration is already higher than preset threshold value, Such as the range higher than PM10 is 0.656~8.490, under this sandstorm weather, particulate in air is dense, adopts at this time Meet room temperature, humidity requirement with full return air+auxiliary machinery refrigeration mode.Specifically, schematic diagram as shown in FIG. 6, it is each The valve state control of equipment is as shown in table 5 below.

Table 5

Dotted line represents the source of refrigeration wind in Fig. 6 and ambient temperature information is passed to full work by trend, temperature sensor Condition AHU control cabinet 101, full working scope AHU control cabinet 101 according to analysis and Control new air-valve FV1, the new air-valve FV2 of Controlling model at In close pattern, completely cuts off extraneous fresh air and enter refrigeration system, to prevent bad weather from causing calculator room equipment failure.Return air according to Route shown in dotted line enters inside refrigeration system in Fig. 6, by assisting mechanical refrigeration apparatus (for example, cooling coil 107 in figure) Forced cooling, return air is changed into the refrigeration wind of lower temperature, enters plenum chamber 108 by blow valve SV.

Situation six

When outdoor air molecule chemical machine pollutant (airborne molecular contamination, AMC) pollutes But when temperature is lower, in order to avoid chemical pollutant causes equipment fault in computer room, room temperature is met using indirect heat exchange mode Humidity requirement.Specifically, it is also referred to schematic diagram as shown in Figure 5, the valve state of each equipment is controlled such as the following table 6 institute Show.

Table 6

The dotted line of coarseness represents source and the trend of fresh air in Fig. 5, and fine-grained dotted line represents the source of return air And trend.Ambient temperature information is passed to full working scope AHU control cabinet 101, full working scope AHU control cabinet 101 by temperature sensor It is in open mode according to the analysis and Control new air-valve FV1 of Controlling model, new air-valve FV2 is in close pattern, completely cuts off extraneous fresh air Into refrigeration system, to prevent chemical contamination from causing calculator room equipment failure.Extraneous fresh air according to coarseness in Fig. 5 dotted line institute Show that route enters inside refrigeration system, return air enters inside refrigeration system according to route shown in dotted line fine-grained in Fig. 5, fresh air Heat exchange is carried out in heat exchanger in a manner of not contacting i.e. indirect heat exchange with return air.Later by the fresh air after heat exchange process It is discharged by exhaust valve EV, the return air after heat exchange process enters plenum chamber 108 by blow valve SV.

Optionally, when extraneous chemical contamination is serious and to corrode volatile substance pollution, such as situations such as chlorine leakage, this When room temperature, humidity requirement can be met using full return air+auxiliary machinery refrigeration mode, simultaneously according to the mode of situation five Prevent chemical contamination.Described under a variety of external environmental conditions in detail above, full working scope AHU control system it is various possible Working model.During concrete implementation, AHU control cabinet first passes through more essential sensors and multi-channel data recorder etc. and obtains Outdoor parameter information is taken, further according to outdoor parameter information to the multi-parts joint control such as air-valve, primary air fan, secondary air fan, exhaust blower Realize operating condition switching, in terms of the opening/closing time of valve and aperture control choose precision it is higher, it is swift execution and control machine Structure, make operating condition switching quickly, settle at one go.After the completion of each operating condition switching, AHU control cabinet can finely tune wind according to air-supply target value Valve, the aperture of water valve and blower, secondary side (indoor) air output are controlled according to the temperature difference or pressure difference of cold and hot interchannel, once Crosswind machine (outside) is controlled by primary side supply air temperature, and exhaust air rate (exhaust blower) is controlled according to indoor external differential.

More than, it is elaborated in conjunction with control method of the Fig. 1 to Fig. 6 to the air-treatment unit of the embodiment of the present application. Hereinafter, being described in detail from control device of the Fig. 7 to the embodiment of the present application.

Fig. 7 is the schematic block diagram of device 700 provided by the embodiments of the present application.The device 700 can correspond to (for example, can To be configured at or itself is) AHU control cabinet described in the above method 200.As shown in fig. 7, the device 700 may include: Acquiring unit 710, processing unit 720 and control unit 730.

In a kind of possible design, which can be AHU control cabinet or the chip being configured in AHU control cabinet.

Acquiring unit 710, for obtaining the first parameter information, which is parameter relevant to external environment Information.

It should be understood that the device 700 needs to be determined according to certain parameter information to be directed to current operating condition, it should be specifically chosen Any refrigeration mode.For example, the first parameter information of the application, optionally, which includes external environment At least one of temperature, humidity, air particle concentration, chemical pollutant concentration parameter information.

Optionally, which is also used to obtain the second parameter information, which is and the air-treatment The relevant parameter information of unit.For example, second parameter information is by temperature, the cold and hot channel of computer room air-supply, air draft and return air The information such as pressure difference, the temperature difference, indoor external differential.

Processing unit 720, for true from least two refrigeration modes of the refrigeration system according to first parameter information Fixed first refrigeration mode.

Optionally, which is the temperature information of external environment, which is also used to according to the external world First range locating for the temperature of environment determines first refrigeration mode from least two refrigeration modes of the refrigeration system.

Specifically, when first range is greater than 25 DEG C of temperature range, which determines the first refrigeration mould Formula is fresh air and the refrigeration mode for assisting mechanical refrigeration；Or when first range is greater than 18 DEG C and is less than or equal to 25 DEG C of temperature When spending range, which determines that first refrigeration mode is all-fresh air refrigeration mode；Or when first range is greater than 5 DEG C And when being less than or equal to 18 DEG C of temperature range, which determines that first refrigeration mode is that fresh air and return air directly exchange heat Refrigeration mode；Or when first range is less than or equal to 5 DEG C of temperature range, which determines the first refrigeration mould Formula is fresh air and return air indirect heat exchange refrigeration mode.

Optionally, which is the air particle concentration information of external environment, which is also used to When the air particle concentration of external environment is greater than or equal to the first preset threshold, determine that first refrigeration mode is full return air With the refrigeration mode of auxiliary mechanical refrigeration.

Optionally, which is the chemical pollutant concentration information of external environment, which is also used to When the chemical pollutant concentration of external environment be greater than or equal to the second preset threshold when, determine first refrigeration mode be fresh air and Return air indirect heat exchange refrigeration mode.

Control unit 730 carries out refrigerating operaton using first refrigeration mode for controlling the refrigeration system.

It should be understood that the device 700 can correspond to the AHU control cabinet in the method 200 according to the embodiment of the present application, or should Device 700 may include the module or unit for executing method 200 in Fig. 2.Specifically, which is used for method Step 210 in 200；The processing unit 720 is used to execute the step 220 in method 200；The control unit 730 is for executing The detailed process of step 230 in method 200, above-mentioned corresponding steps has been described in detail in method 200, for sake of simplicity, This is repeated no more.

Those of ordinary skill in the art may be aware that list described in conjunction with the examples disclosed in the embodiments of the present disclosure Member and algorithm steps can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions are actually It is implemented in hardware or software, the specific application and design constraint depending on technical solution.Professional technician Each specific application can be used different methods to achieve the described function, but this realization is it is not considered that exceed Scope of the present application.

It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description, The specific work process of device and unit, can refer to corresponding processes in the foregoing method embodiment, and details are not described herein.

In several embodiments provided herein, it should be understood that disclosed systems, devices and methods, it can be with It realizes by another way.For example, the apparatus embodiments described above are merely exemplary, for example, the unit It divides, only a kind of logical function partition, there may be another division manner in actual implementation, such as multiple units or components It can be combined or can be integrated into another system, or some features can be ignored or not executed.Another point, it is shown or The mutual coupling, direct-coupling or communication connection discussed can be through some interfaces, the indirect coupling of device or unit It closes or communicates to connect, can be electrical property, mechanical or other forms.

The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple In network unit.It can select some or all of unit therein according to the actual needs to realize the mesh of this embodiment scheme 's.

It, can also be in addition, each functional unit in each embodiment of the application can integrate in one processing unit It is that each unit physically exists alone, can also be integrated in one unit with two or more units.

It, can be with if the function is realized in the form of SFU software functional unit and when sold or used as an independent product It is stored in a computer readable storage medium.Based on this understanding, the technical solution of the application is substantially in other words The part of the part that contributes to existing technology or the technical solution can be embodied in the form of software products, the meter Calculation machine software product is stored in a storage medium, including some instructions are used so that a computer equipment (can be a People's computer, server or network equipment etc.) execute each embodiment the method for the application all or part of the steps. And storage medium above-mentioned includes: that USB flash disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), arbitrary access are deposited The various media that can store program code such as reservoir (Random Access Memory, RAM), magnetic or disk.

The above, the only specific embodiment of the application, but the protection scope of the application is not limited thereto, it is any Those familiar with the art within the technical scope of the present application, can easily think of the change or the replacement, and should all contain Lid is within the scope of protection of this application.Therefore, the protection scope of the application should be based on the protection scope of the described claims.

Claims

1. a kind of method for controlling air-treatment unit, which is characterized in that the air-treatment unit includes at least air-treatment Unit AHU control cabinet and refrigeration system, the refrigeration system can carry out refrigerating operaton using at least two refrigeration modes, described Method includes:

The AHU control cabinet obtains the first parameter information, and first parameter information is parameter information relevant to external environment；

The AHU control cabinet determines the according to first parameter information from least two refrigeration modes of the refrigeration system One refrigeration mode；

The AHU control cabinet controls the refrigeration system and carries out refrigerating operaton using first refrigeration mode.

2. the method according to claim 1, wherein when first parameter information includes the temperature of external environment At least one of degree, humidity, air particle concentration, chemical pollutant concentration parameter information.

3. method according to claim 1 or 2, which is characterized in that first parameter information is the temperature of external environment Information, the AHU control cabinet are determined from least two refrigeration modes of the refrigeration system according to first parameter information First refrigeration mode, comprising:

The refrigeration mode of AHU control cabinet first range and the refrigeration system according to locating for the temperature of the external environment Corresponding relationship, first refrigeration mode is determined from least two refrigeration modes of the refrigeration system.

4. according to the method described in claim 3, it is characterized in that,

When first range is greater than 25 DEG C of temperature range, the AHU control cabinet determines that first refrigeration mode is The refrigeration mode of fresh air and auxiliary mechanical refrigeration；Or

When first range is greater than 18 DEG C and is less than or equal to 25 DEG C of temperature range, the AHU control cabinet determines institute Stating the first refrigeration mode is all-fresh air refrigeration mode；Or

When first range is greater than 5 DEG C and is less than or equal to 18 DEG C of temperature range, described in the AHU control cabinet determination First refrigeration mode is that fresh air and return air directly exchange heat refrigeration mode；Or

When first range is less than or equal to 5 DEG C of temperature range, the AHU control cabinet determines the first refrigeration mould Formula is fresh air and return air indirect heat exchange refrigeration mode.

5. method according to claim 1 or 2, which is characterized in that first parameter information is the air of external environment Particle concentration information, the AHU control cabinet is according to first parameter information from least two refrigeration of the refrigeration system The first refrigeration mode is determined in mode, comprising:

When the air particle concentration of external environment is greater than or equal to the first preset threshold, described in the AHU control cabinet determination First refrigeration mode is full return air and the refrigeration mode for assisting mechanical refrigeration.

6. method according to claim 1 or 2, which is characterized in that first parameter information is the chemistry of external environment Pollutant concentration information, the AHU control cabinet is according to first parameter information from least two refrigeration of the refrigeration system The first refrigeration mode is determined in mode, comprising:

When the chemical pollutant concentration of external environment is greater than or equal to the second preset threshold, described in the AHU control cabinet determination First refrigeration mode is fresh air and return air indirect heat exchange refrigeration mode.

7. method according to any one of claim 1 to 6, which is characterized in that the method also includes:

The AHU control cabinet obtains the second parameter information, and second parameter information is relevant to the air-treatment unit Parameter information；

The AHU control cabinet corrects refrigerating capacity according to second parameter information, and the refrigerating capacity is that the refrigeration system utilizes Refrigerating capacity when first refrigeration mode is run.

8. the method according to the description of claim 7 is characterized in that second parameter information is computer room air-supply, air draft and returns At least one of the temperature of wind, cold and hot channel pressure difference, the temperature difference, indoor and outdoor differential pressure information parameter information.

9. a kind of device, which is characterized in that described device is applied in air-treatment unit, and the air-treatment unit at least wraps Refrigeration system is included, the refrigeration system can carry out refrigerating operaton using at least two refrigeration modes, and described device includes:

Acquiring unit, for obtaining the first parameter information, first parameter information is parameter information relevant to external environment；

10. device according to claim 9, which is characterized in that first parameter information include external environment temperature, At least one of humidity, air particle concentration, chemical pollutant concentration parameter information.

11. device according to claim 9 or 10, which is characterized in that first parameter information is the temperature of external environment Information is spent, the processing unit is also used to:

The corresponding relationship of the refrigeration mode of the first range and the refrigeration system according to locating for the temperature of the external environment, from First refrigeration mode is determined at least two refrigeration modes of the refrigeration system.

12. device according to claim 11, which is characterized in that

When first range is greater than 25 DEG C of temperature range, the processing unit determines that first refrigeration mode is new The refrigeration mode of wind and auxiliary mechanical refrigeration；Or

When first range is greater than 18 DEG C and is less than or equal to 25 DEG C of temperature range, described in the processing unit determination First refrigeration mode is all-fresh air refrigeration mode；Or

When first range is greater than 5 DEG C and is less than or equal to 18 DEG C of temperature range, described in the processing unit determination First refrigeration mode is that fresh air and return air directly exchange heat refrigeration mode；Or

When first range is less than or equal to 5 DEG C of temperature range, the processing unit determines the first refrigeration mould Formula is fresh air and return air indirect heat exchange refrigeration mode.

13. device according to claim 9 or 10, which is characterized in that first parameter information is the sky of external environment Aerated particle object concentration information, the processing unit are also used to:

When the air particle concentration of external environment is greater than or equal to the first preset threshold, determine that first refrigeration mode is The refrigeration mode of full return air and auxiliary mechanical refrigeration.

14. device according to claim 9 or 10, which is characterized in that first parameter information is the change of external environment Pollutant concentration information is learned, the processing unit is also used to:

When the chemical pollutant concentration of external environment is greater than or equal to the second preset threshold, determine that first refrigeration mode is Fresh air and return air indirect heat exchange refrigeration mode.

15. the device according to any one of claim 9 to 14, which is characterized in that

The acquiring unit is also used to obtain the second parameter information, and second parameter information is and the air-treatment unit phase The parameter information of pass；

The processing unit is also used to correct refrigerating capacity according to second parameter information, and refrigerating capacity described in refrigerating operaton is described Refrigerating capacity when refrigeration system is run using first refrigeration mode.

16. device according to claim 15, which is characterized in that second parameter information be computer room air-supply, air draft and At least one of the temperature of return air, cold and hot channel pressure difference, the temperature difference, indoor and outdoor differential pressure information parameter information.

17. a kind of control air-treatment unit characterized by comprising

Refrigeration system, the refrigeration system can carry out refrigerating operaton using at least two refrigeration modes；

Air conditioner unit AHU control cabinet, the AHU control cabinet is for control described in any one of perform claim requirement 1 to 8 Method.

18. a kind of computer readable storage medium, which is characterized in that for storing computer instruction, when the computer instruction When running on computers, so that the computer executes such as control method described in any item of the claim 1 to 8.

19. a kind of computer program product, which is characterized in that when the computer program product is run on computers, make It obtains the computer and executes such as control method described in any item of the claim 1 to 8.