CN201697266U - Constant-temperature and constant-humidity controller capable of automatically adjusting ratio of primary return air to secondary return air - Google Patents
Constant-temperature and constant-humidity controller capable of automatically adjusting ratio of primary return air to secondary return air Download PDFInfo
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- CN201697266U CN201697266U CN2009202960518U CN200920296051U CN201697266U CN 201697266 U CN201697266 U CN 201697266U CN 2009202960518 U CN2009202960518 U CN 2009202960518U CN 200920296051 U CN200920296051 U CN 200920296051U CN 201697266 U CN201697266 U CN 201697266U
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Abstract
The utility model relates to a constant-temperature and constant-humidity controller capable of automatically adjusting ratio of primary return air to secondary return air. The controller comprises a single-chip microcomputer circuit, a key input unit, a display unit, a temperature measurement unit, a humidity measurement unit, an indoor pressure measurement unit, a primary return air valve unit, a second return air valve unit, a cooling water valve unit, a humidifier unit, a heater unit and a fan unit which are respectively connected with the single-chip microcomputer circuit, and a power supply unit which is respectively connected with the units and supplies power to the units. The controller can additionally comprise a fresh air valve unit which is connected with the single-chip microcomputer circuit and a wired network communication unit which is connected with the single-chip microcomputer circuit. The utility model has the advantages that the cooling load and heating load offset caused in the dehumidification and reheating air treatment process of the existing constant-temperature and constant-humidity set can be avoided, the energy wastage caused thereby is eliminated, the dehumidification capacity is strong and the control accuracy is high.
Description
Technical field:
The utility model relates to a kind of constant temperature and humidity controller of automatic adjusting first and second air returning ratio.Can be used for the production of energy saving constant temperature and humidity unit and to the reducing energy consumption of old operational system.
Background technology:
The constant temperature and humidity air handling system of the present design and running of China, the overwhelming majority are to adopt the primary retirn air system.The air (being primary retirn air) that is about in the air conditioning chamber mixes with outdoor new wind, in order to dehumidify, will cool to the required apparatus dew point of humidity control earlier, by heating again, makes air reach temperature required then, sends in the air conditioning chamber again.In the process that heats again after the cooling earlier that causes thus, producing the phenomenon that hot and cold amount offsets, cause the waste of the serious energy, also is the real cut of this air conditioner energy saving technology.This problem is noted by the designing unit that has, adopted during design fixing once, the design of secondary return air ratio designs, after promptly at first part room air (primary retirn air) being cooled to the dew point dehumidifying earlier, mix intensification again with another part room air (being secondary return air) after, send into again in the air conditioning chamber, energy-saving effect is preferably arranged.But fixedly air returning ratio determine determine according to the peak load operating mode.And actual motion load is always less than peak load, and changes with the continuous variation of indoor production load, and the historical facts or anecdotes border is in service still to be needed to regulate indoor temperature by heating again, still has the hot and cold energy waste that offsets and cause of part.
For avoiding above-mentioned energy waste phenomenon, the national regulation group in " heating and ventilation and air conditioning design specification " GB50019-2003, propose in, the primary retirn air constant temperature and humidity system is used in restriction in the large-scale constant temperature and humidity air-conditioning system, do not recommend to adopt the secondary return air scheme, require to adopt the pretreated scheme of new wind; And explanation does not recommend the reason of secondary return air scheme to be because present secondary return air system is not realized the successful case of reliable and stable control.But because new wind pretreating scheme equipment is than complexity and restricted application, only be applicable to the less and less demanding place of control accuracy of indoor moisture dispersed amount, therefore the constant temperature and humidity unit of now producing on the market and using is almost all in the primary retirn air system that uses high energy consumption.
The utility model content:
The purpose of this utility model is exactly the constant temperature and humidity controller that proposes a kind of automatic adjusting first and second air returning ratio, it can avoid present constant temperature and humidity unit in the air handling process of dehumidifying, heating again, the cooling and heating load that causes offsets, eliminate the energy waste that causes thus, and dehumidifying effect is strong, the control accuracy height.
For achieving the above object, the constant temperature and humidity controller of a kind of automatic adjusting first and second air returning ratio of the utility model, comprise single chip circuit, the key-press input unit that is connected with single chip circuit, display unit, temperature measurement unit, moisture measurement unit, room pressure measuring unit, primary retirn air valve cell, secondary return air valve cell, cold valves unit, humidifier unit, unit heater, fan unit respectively, and the power subsystem that links to each other and power with said units respectively.
Described temperature measurement unit can comprise return air temperature measuring unit, wind pushing temperature measuring unit, and described moisture measurement unit can comprise return air moisture measurement unit, air-supply moisture measurement unit.Also can comprise the new air-valve unit that is connected with single chip circuit, described temperature measurement unit also can comprise new wind-warm syndrome degree measuring unit, and described moisture measurement unit also can comprise new rheumatism degree measuring unit
Also can comprise the cable network communication unit that is connected with single chip circuit.
The utility model passes through single chip circuit, Mathematical Modeling and valve characteristic curve according to air property, automatically judge the deviate and the amplitude of variation thereof of indoor return air temperature, humidity and setting value, employing is from optimizing, constantly regulate Cold water tap aperture and first and second return air valve opening ratio example automatically, make the output of cold all consistent with actual demand with air quantity by surface cooler, satisfy purpose with most economical ground, full-automatic independent control temperature, humidity, also can regulate malleation value in the control room simultaneously by aperture from the new air valve of optimizing automatic control and adjustment.Reach from optimizing, full-automatic, indoor temperature, humidity and the malleation value of high accuracy control constant temperature and humidity air-conditioning system.Cancel heating cycle again after the dehumidifying, and used the mixed temperature adjustment of secondary return air instead.Promptly avoid cooling and heating load to offset fully, eliminated the energy waste phenomenon that causes thus.
The utility model is regulated the secondary return air constant temperature and humidity energy-conserving control technology of first and second air returning ratio automatically, is the thorough improvement to traditional constant temperature and humidity control technology, and extensive market prospects is arranged, and is applicable to the constant temperature and humidity system of most forms; Be specially adapted to transformation to existing traditional constant temperature and humidity system, can be under the few prerequisite of investment for trnasforming urban land, removing (is that the annual outdoor air water content of example surpassed the time of 9g/kg dry air above 6300 hours with the area, Guangzhou) under the wet cooling condition, energy-conservation correctional effect more than 30% can be realized, energy-conservation correctional effect more than 50% can be realized clean constant temperature and humidity system of tradition and exact constant temperature constant humidity air-conditioning system (supply air temperature difference is less than 6 degree).
The utility model from the optimizing automatic control and adjustment, can reach following purpose by chip microcontroller: can reduce hot and cold load design load when 1, designing, installation cost is reduced.2, in service can constantly the variation according to load condition from optimizing, regulated automatically, makes systematic economy, reliable, stable operation.3, good energy-saving effect, can save operating cost significantly, compare traditional constant temperature and humidity air-conditioning system and realize energy-conservationly more than 30%, compare traditional clean constant temperature and humidity system and exact constant temperature constant humidity air-conditioning system (supply air temperature difference is less than 6 degree) and can realize energy-conservation more than 50%.
Description of drawings:
Fig. 1 is a block diagram of the present utility model;
Fig. 2 is the thermostatic constant wet control system connection diagram of the utility model and secondary return air air-conditioning unit;
The specific embodiment:
The CONSTRUCTED SPECIFICATION of the utility model embodiment is described in detail in detail below in conjunction with accompanying drawing:
As shown in Figure 1, the constant temperature and humidity controller of a kind of automatic adjusting first and second air returning ratio of the utility model, comprise single chip circuit, the key-press input unit that is connected with single chip circuit, display unit, temperature measurement unit, moisture measurement unit, room pressure measuring unit, primary retirn air valve cell, secondary return air valve cell, cold valves unit, humidifier unit, unit heater, fan unit, new air-valve unit, cable network communication unit respectively, and the power subsystem that links to each other and power with said units respectively.Temperature measurement unit comprises return air temperature measuring unit, wind pushing temperature measuring unit, new wind-warm syndrome degree measuring unit, and the moisture measurement unit comprises return air moisture measurement unit, air-supply moisture measurement unit, new rheumatism degree measuring unit.Unit heater comprises 1 group of electrical heating, 2 groups of electrical heating, 3 groups of unit of electrical heating.Key-press input unit comprises a plurality of buttons, that realizes power supply opens/stops control, the setting of temperature, humidity, indoor malleation, manually, automatically the selection of mode of operation such as normal, on duty,, solidify control program in the single-chip microcomputer, can be according to the input value of temperature measurement unit, moisture measurement unit and pressure measurement cell, automatically the aperture of cooling, heating, humidification, new air-valve and first and second air returning valve of output signal control and regulation air-conditioning unit after the computing realizes indoor temperature, humidity and the control of malleation value automatically.The RS485 communication interface of cable network communication unit for being connected with the microcontroller communication mouth, in order to realize networking control, transmit related data by network, be connected with the wired remote monitor terminal, communicate with the wired remote monitor terminal, provide data message for analysis to remote monitoring terminal, perhaps receive the control parameter from remote monitoring terminal.
As shown in Figure 2, thermostatic constant wet control system connection diagram for the utility model and secondary return air air-conditioning unit, wherein: KS is a controlled area, AI, AO, the DO port signal of the utility model DDC controller are: the new wind-warm syndrome degree of AI1-signal, the new rheumatism degree of AI2-signal, AI3-blast temperature signals, the AI4-moisture signal of blowing, AI5-return air temperature signal, AI6-return air moisture signal, AI7-intraventricular pressure difference signal; The control of AO1-cold valves, the control of AO2-humidifier, AO3-primary retirn air valve control control, AO4-secondary return air valve control control, the new air-valve control of AO5-control; 1 group of DO1-electrical heating, 2 groups of DO2-electrical heating, 3 groups of DO3-electrical heating.
The utlity model has following advantage.
1) control is reliable and stable, and the control accuracy height is applicable to high accuracy control place.
2) the indoor dehumidification ability is several times as much as the pretreated scheme of new wind, applicable to indoor the wet place of loosing is arranged.
3) need not to increase new blower fan group, system is simple, reduced investment, and operation and maintenance cost is low.
Claims (6)
1. constant temperature and humidity controller of automatically regulating first and second air returning ratio, it is characterized in that: comprise single chip circuit, the key-press input unit that is connected with single chip circuit, display unit, temperature measurement unit, moisture measurement unit, room pressure measuring unit, primary retirn air valve cell, secondary return air valve cell, cold valves unit, humidifier unit, unit heater, fan unit respectively, and the power subsystem that links to each other and power with said units respectively.
2. controller according to claim 1 is characterized in that: described temperature measurement unit comprises return air temperature measuring unit, wind pushing temperature measuring unit, and described moisture measurement unit comprises return air moisture measurement unit, air-supply moisture measurement unit.
3. controller according to claim 2 is characterized in that: also comprise the new air-valve unit that is connected with single chip circuit, described temperature measurement unit also comprises new wind-warm syndrome degree measuring unit, and described moisture measurement unit also comprises new rheumatism degree measuring unit.
4. controller according to claim 1 is characterized in that: described unit heater comprises 1 group of unit of electrical heating, 2 groups of unit of electrical heating, 3 groups of unit of electrical heating.
5. according to each described controller of claim 1 to 4, it is characterized in that: also comprise the cable network communication unit that is connected with single chip circuit.
6. controller according to claim 5 is characterized in that: the RS485 communication interface of described cable network communication unit for being connected with the microcontroller communication mouth.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202960518U CN201697266U (en) | 2009-12-31 | 2009-12-31 | Constant-temperature and constant-humidity controller capable of automatically adjusting ratio of primary return air to secondary return air |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009202960518U CN201697266U (en) | 2009-12-31 | 2009-12-31 | Constant-temperature and constant-humidity controller capable of automatically adjusting ratio of primary return air to secondary return air |
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| CN201697266U true CN201697266U (en) | 2011-01-05 |
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| CN2009202960518U Expired - Fee Related CN201697266U (en) | 2009-12-31 | 2009-12-31 | Constant-temperature and constant-humidity controller capable of automatically adjusting ratio of primary return air to secondary return air |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102175058A (en) * | 2011-03-03 | 2011-09-07 | 广州瑞凯安电子科技有限公司 | Convective circulation constant temperature and humidity purification air interchange system |
| CN103196210A (en) * | 2013-04-27 | 2013-07-10 | 南京拓展科技有限公司 | Low-energy consumption constant-temperature constant-humidity regulation technology |
| CN103759391A (en) * | 2014-01-03 | 2014-04-30 | 广东申菱空调设备有限公司 | Thermostatic and humidistat air conditioning system and control method for improving accuracies of indoor temperature and humidity |
| CN111012114A (en) * | 2019-12-16 | 2020-04-17 | 珠海格力电器股份有限公司 | Constant-temperature and constant-humidity display cabinet and control method thereof |
| CN114963366A (en) * | 2022-06-15 | 2022-08-30 | 中国电子系统工程第四建设有限公司 | Secondary return air conditioning system and control method |
-
2009
- 2009-12-31 CN CN2009202960518U patent/CN201697266U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102175058A (en) * | 2011-03-03 | 2011-09-07 | 广州瑞凯安电子科技有限公司 | Convective circulation constant temperature and humidity purification air interchange system |
| CN102175058B (en) * | 2011-03-03 | 2012-11-28 | 广州瑞凯安电子科技有限公司 | Convective circulation constant temperature and humidity purification air interchange system |
| CN103196210A (en) * | 2013-04-27 | 2013-07-10 | 南京拓展科技有限公司 | Low-energy consumption constant-temperature constant-humidity regulation technology |
| CN103759391A (en) * | 2014-01-03 | 2014-04-30 | 广东申菱空调设备有限公司 | Thermostatic and humidistat air conditioning system and control method for improving accuracies of indoor temperature and humidity |
| CN103759391B (en) * | 2014-01-03 | 2016-08-17 | 广东申菱环境系统股份有限公司 | A kind of constant temperature and humidity air-conditioning system and the control method of raising indoor temperature and humidity precision |
| CN111012114A (en) * | 2019-12-16 | 2020-04-17 | 珠海格力电器股份有限公司 | Constant-temperature and constant-humidity display cabinet and control method thereof |
| CN114963366A (en) * | 2022-06-15 | 2022-08-30 | 中国电子系统工程第四建设有限公司 | Secondary return air conditioning system and control method |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110105 Termination date: 20171231 |
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| CF01 | Termination of patent right due to non-payment of annual fee |