CN100510561C - Screw rod accurate air-conditioning system - Google Patents
Screw rod accurate air-conditioning system Download PDFInfo
- Publication number
- CN100510561C CN100510561C CNB2004100270115A CN200410027011A CN100510561C CN 100510561 C CN100510561 C CN 100510561C CN B2004100270115 A CNB2004100270115 A CN B2004100270115A CN 200410027011 A CN200410027011 A CN 200410027011A CN 100510561 C CN100510561 C CN 100510561C
- Authority
- CN
- China
- Prior art keywords
- helical
- control
- lobe compressor
- compressor
- ddc controller
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
The invention relates to an integrated precision air conditioner, which uses the heat pump to produce heat and the air quality sensor to control the air quality of room. In the course of processing air, it uses air quality sensor to detect the quality rate of indoor air and the demanded quality, and exports PID to control the fresh air valve of this air conditioner units, to control the quality of air. In the course of heating, it uses the high effective heat pump to produce heat, and its control method is that controlling the temperature of room and the preset temperature, and according the PID operation, it exports a PID control value to control the heating of units. It uses enthalpy potential difference control compressor to control the cooling, dehumidification control humidifier, therefore, the energy consumption is reduced effectively, and the precision control is realized.
Description
Technical field
The present invention relates to field of heating ventilation air conditioning, be specifically related to a kind of screw Precise air-conditioning system.
Background technology
At present, in commercial precision air conditioner field, the general compressor that adopts the customization cold in the refrigeration system in the adjusting of energy, carries out energy adjustment by the operation quantity of control compressor.Therefore, no matter you adopt the compressor that how much customizes cold, and the performance curve of its energy adjustment all is a kind of stage transition curve, rather than slick and sly curve.It is not high to be that this precision air conditioner has control accuracy, the shortcoming that energy loss is bigger.With respect to control system, adopt the compressor of customization cold many more, unit trouble more just in manufacture process, easy breaking down more just in running brought many inconvenience for later maintenance and maintenance.
Summary of the invention
The objective of the invention is to, a kind of novel precision air conditioner system is provided, comprise precision air conditioner system improvement and control two aspects, can solve the problems referred to above in the existing precision air conditioner system, realize the precision air conditioner energy drop into as required and the high accuracy of controlled environment temperature is controlled.
Technical scheme of the present invention is as follows: a kind of screw Precise air-conditioning system, comprise the helical-lobe compressor that connects in regular turn, evaporimeter, heater, humidifier, screen pack, blower fan, device for drying and filtering, expansion valve, condenser, sensor and DDC controller, sensing and control module, be provided with the binding post that is connected with described DDC controller in described sensing and the control module, described sensing and control module come out the humiture of controlled environment and transmit signals to the DDC controller by sensor sensing, the user calculates from the enthalpy of the humiture correspondence of the establishing PID by the DDC controller in the enthalpy of the humiture correspondence that the DDC controller is sensed Temperature Humidity Sensor and the DDC controller, export a pid control signal and gives helical-lobe compressor, realizes the output as required of helical-lobe compressor energy by the position of change helical-lobe compressor internal spool valve.
The present invention is according to the control requirement of precision air conditioner, and the control hardware of selecting for use is the DDC controller, and this controller has analog input, simulation output, numeral input and digital output interface.What controller adopted is+the 24VDC power supply input and output of the normal voltage analog signal of 0～10V and 2～10v or the normalized current analog signal of 4 ~ 20mV, and the input and output of data signal.The condenser of selecting helical-lobe compressor in the refrigeration system for use and being complementary with it, device for drying and filtering, expansion valve, refrigerating plants such as evaporimeter.
Its control principle is: according to all corresponding unique enthalpy of each humiture, write a kind of control program that utilizes enthalpy difference to control the precision air conditioner compressor operating.The humiture input controller that humiture that Temperature Humidity Sensor is sensed and user set changes into corresponding enthalpy earlier in the controller the inside, carries out the PID computing then.A PID controlling value of output (PID value) is given compressor after computing, changes the logarithm that the helical-lobe compressor internal gear meshes by the position that changes the helical-lobe compressor internal spool valve, realizes the control to the output of compressor energy.
By the enthalpy difference computing method, refrigeration system is subjected to the control of temperature or humidity no longer separately, but the enthalpy that humiture combines is controlled.Enthalpy difference hour, system only need start the control requirement that heat temperature raising and little cold refrigeration in a small amount can satisfy environment.Avoid a large amount of cooling dehumidifier and a large amount of heat temperature raisings, thereby saved energy consumption; When enthalpy difference was big, refrigeration system was given helical-lobe compressor according to the control signal of DDC output, and the position of the internal spool valve by changing compressor is controlled the cold of compressor and exported as required.
Heater control: in precision air conditioner of the present invention system, by the heating of heater, heater cuts out when the temperature of reality is higher than setting value; When the temperature of reality was lower than the temperature of setting, the DDC controller calculated through PID according to the temperature of setting and the temperature difference of actual temperature, obtains the group number that heater is opened, and signal is sent to actuator carry out.
Humidifier control: among the invention, control the humidification amount by the aperture of humidity sensor control humidifier, its control mode is: when actual humidity is higher than setting humidity, humidifier cuts out: when the humidity of reality during less than the humidity set, the DDC controller is according to value and the actual value set, through the PID computing, obtain an aperture controlling value, the aperture of control humidifier, thus reached the purpose of controlling humidifier humidification amount.
Advantage of the present invention is: the invention has adopted advanced DDC control hardware in conjunction with PID (ratio, integration, differential) enthalpy difference algorithm, combines with helical-lobe compressor, can be controlled at the environment of controlled chamber within certain temperature humidity range accurately.Adopt customization cold compressor to compare with tradition, save the energy significantly, and improved control accuracy.The controller that this precision air conditioner adopts can detect on-the-spot various states in real time, inquires about states such as humiture current and that set.Can carry out on-the-spot humiture set point and various parameter control, comprise the energy output control of heater control, the control of humidifier aperture, compressor, the correction of sensor and timed power on/off etc.Can monitor the running status of each parts, autostop and send alarm signal etc. when breaking down.
Existing helical-lobe compressor is divided into the helical-lobe compressor of progression adjusting and the helical-lobe compressor of step-less adjustment, and the control principle of these two kinds of compressors is the same substantially, but controls the output signal difference.The helical-lobe compressor that adopts progression to regulate, what controller was exported is data signal, and adopts the helical-lobe compressor of step-less adjustment, what controller was exported is an analog signal.
Below in conjunction with explanation accompanying drawing and case study on implementation, the invention is described further.
Description of drawings
Fig. 1 is in the prior art, adopts the precision air conditioner system diagram of two customization cold compressors;
Fig. 2 is the system diagram that the present invention adopts helical-lobe compressor:
Fig. 3 is the control flow block diagram that the present invention adopts progression adjusting screw(rod) compressor;
Fig. 4 is the control flow block diagram that the present invention adopts the stepless adjustment screw rod compressor.
In Fig. 1,2, each label is unitedly described as follows: compressor 1, evaporimeter 2, heater 3, humidifier 4, screen pack 9, blower fan 6, device for drying and filtering 5, expansion valve 7, condenser 8.In Fig. 2, compressor is a helical-lobe compressor, has the helical-lobe compressor of helical-lobe compressor that progression regulates and step-less adjustment optional.
Also be provided with sensing and control module in the screw Precise air-conditioning system, be provided with the binding post that is connected with the DDC controller in sensing and the control module, sensing and control module come out the humiture of controlled environment and transmit signals to the DDC controller by sensor sensing, the user calculates from the enthalpy of the humiture correspondence of the establishing PID by the DDC controller in the enthalpy of the humiture correspondence that the DDC controller is sensed Temperature Humidity Sensor and the DDC controller, export a pid control signal and give helical-lobe compressor, realize the output as required of helical-lobe compressor energy by the position that changes the helical-lobe compressor internal spool valve.
In Fig. 3,4, Fig. 3 is the helical-lobe compressor that has adopted progression to regulate, and the signal of its output is a numerical variable (ON/OFF) two-phase switch, and its calculation diagram is as follows:
In the computing of reality, input quantity is converted into the standard analog variable of 0～10V, be about to set-point and process variables and be standardized into a magnitude of voltage between 0～10V.Be output as the opening and closing that a numerical variable is used to control magnetic valve in the compressor, thus the input as required of control compressor energy.For example, be the first order of 25% unlatching helical-lobe compressor at pid value, be lower than 25% o'clock close compressor; At pid value is the second level of 50% o'clock unlatching compressor, is lower than at 50% o'clock and closes the second level.
Fig. 4 has adopted the stepless adjustment screw rod compressor, and its input variable is the standard analog signal of a 0～10V, and output variable also is the standard analog signal of a 0～10V.Its calculation diagram is as follows:
Compressor changes the position of compressor internal spool valve automatically according to the voltage signal that passes over, the energy output of control compressor.
In Fig. 3, Fig. 4, only under the situation of indoor fan operation, miscellaneous part could run well, otherwise unit can not be opened.Under the situation of the normal operation of blower fan, the humiture that Temperature Humidity Sensor is sensed sends DDC to, be converted into earlier in the DDC enthalpy again with DDC in the enthalpy of the humiture correspondence set of user carry out PID and calculate, export a PID controlling value to helical-lobe compressor.Control the energy output of compressor by the position that changes the compressor internal spool valve, thereby realized the purpose of control precision air conditioner refrigeration and dehumidifying.
Heater control: adopt PID to regulate control algolithm, the temperature of actual temperature of sensing and setting is contrasted.When being higher than setting value, heater cuts out; When being lower than setting value, the group number that the result who calculates according to PID decides heater to open.
Humidifier control: humidifier humidification amount how much be that aperture by the control humidifier realizes that the humidifier aperture is controlled by the DDC controller.Humidity of setting and actual moisture signal are passed to the DDC controller, cross the PID computing, export a control signal and give humidifier, controlled the humidification amount of precision air conditioner by the aperture of controller at the controller back warp.
Claims (3)
1, a kind of screw Precise air-conditioning system, comprise the helical-lobe compressor that connects in regular turn, evaporimeter, heater, humidifier, screen pack, blower fan, device for drying and filtering, expansion valve, condenser, sensor and DDC controller, sensing and control module, it is characterized in that: be provided with the binding post that is connected with described DDC controller in described sensing and the control module, described sensing and control module come out the humiture of controlled environment and transmit signals to the DDC controller by sensor sensing, the user calculates from the enthalpy of the humiture correspondence of the establishing PID by the DDC controller in the enthalpy of the humiture correspondence that the DDC controller is sensed Temperature Humidity Sensor and the DDC controller, export a pid control signal and gives helical-lobe compressor, realizes the output as required of helical-lobe compressor energy by the position of change helical-lobe compressor internal spool valve.
2, according to the described screw Precise air-conditioning system of claim 1, it is characterized in that, described helical-lobe compressor is a progression adjusting screw(rod) compressor, the DDC controller is exported to data signal of helical-lobe compressor, controls the output as required of helical-lobe compressor energy by the magnetic valve in the control helical-lobe compressor.
3, according to the described screw Precise air-conditioning system of claim 1, it is characterized in that, described helical-lobe compressor is the stepless adjustment screw rod compressor, analog control signal of described DDC controller output, and helical-lobe compressor changes the position of helical-lobe compressor internal spool valve automatically according to analog control signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100270115A CN100510561C (en) | 2004-04-28 | 2004-04-28 | Screw rod accurate air-conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100270115A CN100510561C (en) | 2004-04-28 | 2004-04-28 | Screw rod accurate air-conditioning system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1690550A CN1690550A (en) | 2005-11-02 |
| CN100510561C true CN100510561C (en) | 2009-07-08 |
Family
ID=35346178
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100270115A Expired - Fee Related CN100510561C (en) | 2004-04-28 | 2004-04-28 | Screw rod accurate air-conditioning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100510561C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100362294C (en) * | 2005-12-19 | 2008-01-16 | 东莞市广大制冷有限公司 | Adjusting method of cool-water screw precisioning air conditioner system |
| CN102052734B (en) * | 2009-11-03 | 2014-10-01 | 海尔集团公司 | Air conditioning unit energy control device and method |
| CN102679500B (en) * | 2012-05-25 | 2014-09-17 | 宁波奥克斯空调有限公司 | Electric heater device of heat pump-type air conditioner |
| CN104406339B (en) * | 2013-11-12 | 2018-03-06 | 江苏春兰动力制造有限公司 | A kind of single screw compressor continuative energy adjustment control method |
| CN104827863A (en) * | 2015-05-18 | 2015-08-12 | 爱唯科环境科技股份有限公司 | In-car air purifier with automatic stopping and alarming functions |
-
2004
- 2004-04-28 CN CNB2004100270115A patent/CN100510561C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1690550A (en) | 2005-11-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107202386B (en) | Combined constant-temperature constant-humidity control air cabinet and dew-point-free control method | |
| CN106288197B (en) | A kind of air conditioning control method and its system based on pid algorithm | |
| CN109297157A (en) | A kind of air-conditioner control method and air conditioner | |
| CN105352239B (en) | The control method of air conditioner electronic expansion valve | |
| CN106440222B (en) | Clean air-conditioning system and its control method | |
| CN100485281C (en) | Air conditioner | |
| KR102047754B1 (en) | Multi-function smart air conditioning system | |
| CN105352109A (en) | Variable-air-volume air-conditioning terminal temperature control system and method based on climate compensation | |
| CN110425698A (en) | A kind of air conditioning control method and device of user preference self study | |
| CN1786604A (en) | Method for controlling energy compensating precision air conditioner | |
| CN203454321U (en) | Energy-saving type anti-condensation air-conditioning system with adjustable air volume | |
| CN103256763A (en) | Humidity controllable air conditioner and humidity control method | |
| CN110260421A (en) | Blower and compressor control method under a kind of convertible frequency air-conditioner dehumidification mode | |
| CN100510561C (en) | Screw rod accurate air-conditioning system | |
| CN208735818U (en) | The energy-saving temperature and humidity control ventilating system of fully-automatic intelligent | |
| CN113007829B (en) | Air conditioner control method and device and air conditioner | |
| CN105115033B (en) | A kind of energy saving air-return air conditioner and its control method | |
| EP3677852A1 (en) | Control method and apparatus for self-cleaning of air conditioner, and air conditioner | |
| CN1715798A (en) | Control method for variable frequency precision air conditioner | |
| CN2919095Y (en) | Energy compensated accurate air-conditioner | |
| KR20140056851A (en) | Air conditioner and method of controlling the same | |
| CN2783196Y (en) | Heat pump combined precision air conditioning system | |
| CN1680756A (en) | Precisive module regulating method of air conditioner | |
| CN1707188A (en) | Whole-fresh air precision air conditioning system | |
| CN2708152Y (en) | Frequency changing precision air-conditioner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: GUANGDONG LIYOU THERMAL SYSTEM CO., LTD. Free format text: FORMER OWNER: GUANGDA REFRIGERATING CO., LTD., DONGGUAN Effective date: 20120607 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 523917 DONGGUAN, GUANGDONG PROVINCE TO: 523808 DONGGUAN, GUANGDONG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20120607 Address after: 523808, Dongguan, Guangdong province Songshan Lake Science and Technology Industrial Park, North Industrial City, 7 industrial North Road, force technology center Patentee after: Guangdong Liyou Thermal System Co., Ltd. Address before: 523917, Humen Town, Guangdong City, Dongguan Province New Village Industrial Zone Patentee before: Guangda Refrigerating Co., Ltd., Dongguan |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090708 Termination date: 20140428 |