CN203642415U - Energy-saving type air handling unit for constant temperature and humidity test room - Google Patents
Energy-saving type air handling unit for constant temperature and humidity test room Download PDFInfo
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- CN203642415U CN203642415U CN201320643511.6U CN201320643511U CN203642415U CN 203642415 U CN203642415 U CN 203642415U CN 201320643511 U CN201320643511 U CN 201320643511U CN 203642415 U CN203642415 U CN 203642415U
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- 238000012360 testing method Methods 0.000 title claims abstract description 11
- 230000001105 regulatory effect Effects 0.000 claims abstract description 20
- 238000001816 cooling Methods 0.000 claims abstract description 14
- 238000005057 refrigeration Methods 0.000 claims abstract description 9
- 238000010438 heat treatment Methods 0.000 claims description 27
- 230000005494 condensation Effects 0.000 claims description 17
- 238000009833 condensation Methods 0.000 claims description 17
- 101000800055 Homo sapiens Testican-1 Proteins 0.000 claims description 13
- 102100033390 Testican-1 Human genes 0.000 claims description 13
- 230000001276 controlling effect Effects 0.000 claims description 8
- 238000007791 dehumidification Methods 0.000 claims description 8
- 101100365087 Arabidopsis thaliana SCRA gene Proteins 0.000 claims description 6
- 101150105073 SCR1 gene Proteins 0.000 claims description 6
- 101100134054 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) NTG1 gene Proteins 0.000 claims description 6
- 238000000034 method Methods 0.000 abstract description 4
- 238000005485 electric heating Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 5
- 238000005259 measurement Methods 0.000 description 5
- 101000668165 Homo sapiens RNA-binding motif, single-stranded-interacting protein 1 Proteins 0.000 description 3
- 102100039692 RNA-binding motif, single-stranded-interacting protein 1 Human genes 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The utility model discloses an energy-saving type air handling unit for a constant temperature and humidity test room. The unit comprises a refrigeration air conditioner unit and a control unit, the operating frequency of an inverter compressor is determined by the greater one of the cooling signal and the dehumidifying signal, the output of the cooling capacity of a refrigerator is automatically regulated while the cooling capacity and the dehumidifying capacity are both guaranteed, the control method is simple, the output of the cooling capacity of the refrigerator just meets the requirements to achieve energy-saving operation, the flow of the exhaust gas entering a compressor of a condensing heater is controlled through a regulation valve, then the heat required for the temperature rise of the test room or the surplus cooling capacity left after dehumidifying is provided, so that the air exhaust of the compressor replaces all or part of electric heating, and energy-saving operation is implemented.
Description
Technical field
The utility model relates to a kind of air-treatment unit, is specially a kind of energy-saving air handling unit group for constant temperature and moisture test chamber.
Background technology
Constant temperature and moisture test chamber reaches the constant of indoor air temperature and humidity by the cold in adjusting laboratory and the balance of heat, moisture removal and humidification amount, and this process realizes by air-treatment unit.Air-treatment unit is made up of refrigeration air-conditioner unit and control module, and refrigeration air-conditioner unit is made up of blower fan, evaporimeter, heater, humidifier, refrigerator etc.; Control module is made up of Temperature Humidity Sensor, controller, electric elements, heating/humidification power regulating eqiupment etc.
The laboratories such as air-conditioner, refrigerator testing laboratory, telecommunications Product environment laboratory and metering detected test room, strict to indoor air themperature and humidity requirement, conventionally dry-bulb temperature and the wet bulb humidity of air all to be stabilized in ± 0.1 ~ 0.5 ℃ in.Because temperature, humidity control accuracy require high, the equipment such as refrigerator, heating and the humidification of air-treatment unit can not adopt the conventional mode of opening/stop, conventional method is to adopt fixed refrigerator continuous service frequently to realize cool-down dehumidification at present, guarantee excessive cold and dehumidifying effect, then unnecessary cold and the moisture removal of output offset that regulates heater, humidifier, is stabilized in range of set value indoor humiture.This control method is simple, equipment cost is low, but shortcoming is refrigerator ability can not be regulated continuously, to combine to control for cold by the start-stop of many refrigerators, unnecessary cold or moisture removal need to be by heating and humidification compensation, cold and hot cancelling out each other caused energy waste, and laboratory's operating cost is high.
Utility model content
The purpose of this utility model is to provide a kind of energy-saving air handling unit group for constant temperature and moisture test chamber, can automatically control frequency-changeable compressor output according to laboratory's refrigeration requirement and dehumidifying demand, the refrigerating capacity output that realizes refrigerator in guaranteeing cooling capacity and dehumidifying effect is minimum, realizes energy-saving run.
The utility model has adopted following technical scheme: a kind of energy-saving air handling unit group for constant temperature and moisture test chamber, comprise refrigeration air-conditioner unit and control module, and it is characterized in that:
Described refrigeration air-conditioner unit comprises: condensation heater, humidifier, three-way control valve, frequency-changeable compressor and condenser;
Described control module comprises temperature sensor, humidity sensor, temperature controller, humidity controller, signal selector, frequency converter and humidification power regulating eqiupment;
The entrance of described three-way control valve connects frequency-changeable compressor exhaust outlet, and three-way control valve the first outlet connects condensation heater entrance, and three-way control valve the second outlet connects condenser inlet; Described condensation heater outlet connects condenser inlet;
Described temperature controller receives temperature sensor signal, and output heating control signal is to three-way control valve, and output cooling control signal is to signal selector; Humidity controller receives humidity sensor signal, and output humidification control signal is to humidification power regulating eqiupment, and output Dehumidification controlling signal is to signal selector;
Described signal selector outputs to frequency converter, Frequency Converter Control frequency-changeable compressor running speed by the large person of cooling control signal and Dehumidification controlling signal.
The ratio that three-way control valve described in the utility model regulates frequency-changeable compressor exhaust to enter condensation heater and condenser, enters the exhaust gas heat of condensation heater as the thermal source of air heat.
The utility model also comprises electrical auxiliary heater, auxiliary heating power regulating eqiupment and switch, and described switch is connected between electrical auxiliary heater and heating power regulating eqiupment, and temperature controller output Closed control signal is to switch, and output heating control signal is to heating power regulating eqiupment.In the time that the quantity of heat given up of condensation heater is not enough, temperature controller is by switch closure, and output heating control signal is to heating power regulating eqiupment, electrical auxiliary heater work.
Than prior art, the utlity model has following advantage:
1. the frequency-changeable compressor running frequency of this air-treatment unit is to be determined by the large person among cooling signal and dehumidifying signal, when guaranteeing at the same time cooling ability and dehumidifying effect, realize the automatic adjusting of refrigerator cold output, control method is simple, and the output of refrigerator cold is satisfied the demand just, has realized energy-saving run.
2. enter the compressor air-discharging flow of condensation heater by control valve control, intensification institute of laboratory calorific requirement is provided, or for offsetting the unnecessary cold that guarantees dehumidifying and cause, compressor air-discharging has substituted all or part of electrical heating, has realized energy-saving run.
accompanying drawing explanation
Fig. 1 is the schematic diagram of the utility model embodiment.
The specific embodiment
As shown in Figure 1, the refrigeration air-conditioner unit of this air-treatment unit comprises: blower fan 1, evaporimeter 2, condensation heater 3, electrical auxiliary heater 4, humidifier 5, expansion valve 9, three-way control valve 6, frequency-changeable compressor 7 and condenser 8.The entrance AB of three-way control valve 6 is connected with the exhaust outlet of frequency-changeable compressor 7, and the outlet A of three-way control valve is connected to the entrance of condensation heater 3, and the outlet B of three-way control valve is connected to the entrance of condenser 8; The outlet of condensation heater 3 is connected with the entrance of condenser 8; Condenser 8 outlets are connected successively with expansion valve 9, evaporimeter 2 and frequency-changeable compressor 6 entrances.
Control module comprises temperature sensor T, humidity sensor RH, temperature controller TIC1, humidity controller TIC2, signal selector SEL, frequency converter INV, heating power regulating eqiupment SCR1, humidification power regulating eqiupment SCR2 and K switch.The input of temperature controller TIC1 is connected with temperature sensor T, and heating control signal 1a, heating power regulating eqiupment SCR1, K switch are connected successively with electrical auxiliary heater 4; Heating control signal 1a is also connected with three-way control valve 6; Cooling control signal 1b is connected with signal selector SEL input; Temperature controller TIC1 is provided with switch control output end gauge tap K; The input of humidity controller TIC2 is connected with humidity sensor RH, and humidification control signal 2a, humidification power regulating eqiupment SCR2, humidifier 5 connect successively; Dehumidification controlling signal 2b is connected with signal selector SEL input; Signal selector SEL output is connected successively with frequency converter INV, frequency-changeable compressor 7.
Operation principle of the present utility model is as follows:
(1) air temperature control:
The air themperature measuring is sent to temperature controller TIC1 by temperature sensor T, the difference of temperature controller TIC1 measurement of comparison temperature and design temperature, if observed temperature is lower than design temperature, temperature controller TIC1 output heating control signal 1a increases, heating control signal 1a is sent to three-way control valve 6 and heating power regulating eqiupment SCR1 simultaneously, three-way control valve 6 increases outlet A hot gas flow, and condensation heater 3 release heat increases are risen air themperature.If the heating control signal 1a of temperature controller TIC1 output reaches 100% and maintain certain hour, the quantity of heat given up deficiency of condensation heater is described, temperature controller TIC1 gauge tap K closure, electrical auxiliary heater puts into operation, to increase heating efficiency.Conventionally electrical auxiliary heater is not worked, and thermal source comes from the exhaust gas heat of compressor entirely, and energy-saving effect is more remarkable like this.
If actual measurement air themperature is higher than design temperature, temperature controller TIC1 output heating control signal 1a declines, and makes air themperature increase.Heating control signal 1a is reduced to after minimum, and cooling control signal 1b rises, and controlling frequency-changeable compressor raising rotating speed increases cold.
(2) air humidity control:
The air humidity detecting is sent to humidity controller TIC2 by humidity sensor RH, humidity controller TIC2 contrast actual measurement humidity and the difference of setting humidity, if actual measurement humidity is lower than setting humidity, humidity controller TIC2 output humidification control signal 2a increases, humidification power regulating eqiupment SCR2 increases the output of electric moistening device, makes air humidity increase.
If actual measurement humidity is higher than setting humidity, the output signal of humidity controller TIC2 declines, and humidifier output declines air humidity is declined.Humidification control signal 2a is reduced to after minimum, and Dehumidification controlling signal 2b rises, and controls frequency-changeable compressor and improves rotating speed increase dehumidifying effect.
(3) operation principle of signal selector SEL:
The Dehumidification controlling signal 2b of the cooling control signal 1b of temperature controller TIC1 and humidity controller TIC2 sends signal selector SEL to simultaneously, the selected speed controling signal of frequency converter INV as frequency-changeable compressor that export to of large person of two signals.
Embodiment of the present utility model is not limited to this; according to foregoing of the present utility model; utilize ordinary skill knowledge and the customary means of this area; do not departing under the above-mentioned basic fundamental thought of the utility model prerequisite; the utility model can also be made modification, replacement or the change of other various ways; as three-way control valve made into two two-way control valves, compressor variable frequency regulative mode makes digital energy regulative mode etc. into, within all dropping on the utility model rights protection scope.
Claims (3)
1. for an energy-saving air handling unit group for constant temperature and moisture test chamber, comprise refrigeration air-conditioner unit and control module, it is characterized in that:
Described refrigeration air-conditioner unit comprises: condensation heater (3), humidifier (5), three-way control valve (6), frequency-changeable compressor (7) and condenser (8);
Described control module comprises temperature sensor (T), humidity sensor (RH), temperature controller (TIC1), humidity controller (TIC2), signal selector (SEL), frequency converter (INV), humidification power regulating eqiupment (SCR2) and switch (K);
The entrance (AB) of described three-way control valve (6) connects frequency-changeable compressor (7) exhaust outlet, and the first outlet (A) of three-way control valve (6) connects condensation heater (3) entrance, and the second outlet (B) of three-way control valve (6) connects condenser (8) entrance; Described condensation heater outlet connects condenser (8) entrance;
Described temperature controller (TIC1) receives temperature sensor (T) signal, and output heating control signal (1a) is to three-way control valve (6), and output cooling control signal (1b) is to signal selector (SEL); Humidity controller (TIC2) receives humidity sensor (RH) signal, and output humidification control signal (2a) is to humidification power regulating eqiupment (SCR2), and output Dehumidification controlling signal (2b) is to signal selector (SEL);
The large person of the control signal of lowering the temperature (1b) and Dehumidification controlling signal (2b) is outputed to frequency converter (INV) by described signal selector (SEL), Frequency Converter Control frequency-changeable compressor (7) operation.
2. energy-saving air handling unit group according to claim 1, it is characterized in that: the ratio that described three-way control valve (6) regulates frequency-changeable compressor (7) exhaust to enter condensation heater (3) and condenser (8), enters the exhaust gas heat of condensation heater (3) as the thermal source of air heat.
3. energy-saving air handling unit group according to claim 1, it is characterized in that: also comprise electrical auxiliary heater (4), auxiliary heating power regulating eqiupment (SCR1) and switch (K), described switch (K) is connected between electrical auxiliary heater (4) and heating power regulating eqiupment (SCR1), temperature controller (TIC1) output Closed control signal is to switch (K), and output heating control signal is to heating power regulating eqiupment (SCR1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320643511.6U CN203642415U (en) | 2013-10-17 | 2013-10-17 | Energy-saving type air handling unit for constant temperature and humidity test room |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320643511.6U CN203642415U (en) | 2013-10-17 | 2013-10-17 | Energy-saving type air handling unit for constant temperature and humidity test room |
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| Publication Number | Publication Date |
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| CN203642415U true CN203642415U (en) | 2014-06-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320643511.6U Expired - Lifetime CN203642415U (en) | 2013-10-17 | 2013-10-17 | Energy-saving type air handling unit for constant temperature and humidity test room |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109126908A (en) * | 2018-08-30 | 2019-01-04 | 江苏拓米洛环境试验设备有限公司 | Electric expansion valve temperature and humidity control system |
-
2013
- 2013-10-17 CN CN201320643511.6U patent/CN203642415U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109126908A (en) * | 2018-08-30 | 2019-01-04 | 江苏拓米洛环境试验设备有限公司 | Electric expansion valve temperature and humidity control system |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 510302 No. 204 Xingang West Road, Haizhu District, Guangzhou City, Guangdong Province Patentee after: China Electrical Appliance Research Institute Co.,Ltd. Address before: 510302 No. 204 Xingang West Road, Haizhu District, Guangzhou City, Guangdong Province Patentee before: CHINA NATIONAL ELECTRIC APPARATUS RESEARCH INSTITUTE Co.,Ltd. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140611 |