CN201903137U - Automatic dehumidifier for calculating dew-point temperature by adopting PLC (Programmable Logic Controller) - Google Patents
Automatic dehumidifier for calculating dew-point temperature by adopting PLC (Programmable Logic Controller) Download PDFInfo
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- CN201903137U CN201903137U CN2010206160891U CN201020616089U CN201903137U CN 201903137 U CN201903137 U CN 201903137U CN 2010206160891 U CN2010206160891 U CN 2010206160891U CN 201020616089 U CN201020616089 U CN 201020616089U CN 201903137 U CN201903137 U CN 201903137U
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- point temperature
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Abstract
The utility model discloses an automatic dehumidifier for calculating dew-point temperature by adopting a PLC (Programmable Logic Controller). A dry-bulb temperature transmitter and a relative humidity transmitter are respectively arranged between an evaporator and a centrifugal fan. The dry-bulb temperature transmitter, the relative humidity transmitter, the centrifugal fan and a compressor are respectively connected with a PLC. The technical benefits are as follows: the function for operating complicated functions of the PLC is utilized to achieve the same effect, the adoption of a special dew-point temperature transmitter is avoided, and the effects of lowering the cost of the product and improving the utilization rate and the reliability of equipment are realized.
Description
Technical field
The utility model relates to a kind of automatic dehumidifier, relates in particular to the automatic dehumidifier that a kind of PLC of employing calculates dew-point temperature.
Background technology
At present; existing dehumidifier is general to be adopted a kind of special dew-point temperature transmitter or adopts the device of dew point testing instrument to detect airborne dew point; then the dew-point temperature parameter is exported to the controller of dehumidifier; the dehumidifier controller according to the startup-shutdown of this dew point parameter control dehumidifier, reaches automatic dehumidifying purpose again.This way fails to make full use of the calculation function of PLC, price costliness such as dew-point temperature transmitter or dew point testing instrument on the market in addition, and fragile.
Summary of the invention
The purpose of this utility model has been to provide a kind of PLC of employing to calculate the automatic dehumidifier of dew-point temperature, it adopts common dry-bulb temperature transmitter and relative humidity transmitter to gather airborne dry-bulb temperature relative humidity, and export to PLC and directly calculate dew-point temperature, removed devices such as adopting special dew-point temperature transmitter or dew point testing instrument from, product cost be can reduce, utilization rate of equipment and installations and reliability improved.
The utility model is achieved like this, it comprises compressor, air-cooled condenser, centrifugal blower, expansion valve, evaporimeter, PLC controller, dry-bulb temperature transmitter, relative humidity transmitter, compressor, air-cooled condenser, expansion valve and evaporimeter head and the tail successively are connected, be provided with centrifugal blower between air-cooled condenser and the evaporimeter, it is characterized in that being respectively equipped with between evaporimeter and the centrifugal blower dry-bulb temperature transmitter and relative humidity transmitter, dry-bulb temperature transmitter, relative humidity transmitter, centrifugal blower and compressor are connected the PLC controller respectively.
Technique effect of the present utility model is: utilized the calculation function to complicated function of PLC to reach effect same, avoided adopting special-purpose dew-point temperature transmitter, reached the reduction product cost, improved utilization rate of equipment and installations and reliability.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Compressor 2, air-cooled condenser 3, centrifugal blower 4, expansion valve 5, evaporimeter 6, dry-bulb temperature transmitter 7, relative humidity transmitter 8, PLC controller in the drawings, 1.
The specific embodiment
As shown in Figure 1, the utility model is achieved like this, compressor 1, air-cooled condenser 2, expansion valve 4 and evaporimeter 5 head and the tail successively are connected, be provided with centrifugal blower 3 between air-cooled condenser 2 and the evaporimeter 5, be respectively equipped with dry-bulb temperature transmitter 6 and relative humidity transmitter 7 between evaporimeter 5 and the centrifugal blower 3, dry-bulb temperature transmitter 6, relative humidity transmitter 7, centrifugal blower 3 and compressor 1 are connected PLC controller 8 respectively.When under the effect of centrifugal blower 3, when air is flowed through dry-bulb temperature transmitter 6 and relative humidity transmitter 7, dry-bulb temperature transmitter 6 and relative humidity transmitter 7 are exported dry-bulb temperature and the relative humidity signal electric current of 4-20mA respectively, this electric current is sent into the collection of simulant signal unit of PLC and is converted into corresponding digital quantity, in PLC, have dew-point temperature and calculate program, the digital quantity of dry-bulb temperature and relative humidity is transfused to calculation procedure, calculates airborne dew-point temperature this moment by calculation procedure.PLC controls the output energy of compressor again according to this dew-point temperature, thereby the control dehumidifier dehumidifies automatically.
Claims (1)
1. adopt PLC to calculate the automatic dehumidifier of dew-point temperature, it comprises compressor, air-cooled condenser, centrifugal blower, expansion valve, evaporimeter, PLC controller, dry-bulb temperature transmitter, relative humidity transmitter, compressor, air-cooled condenser, expansion valve and evaporimeter head and the tail successively are connected, be provided with centrifugal blower between air-cooled condenser and the evaporimeter, it is characterized in that being respectively equipped with between evaporimeter and the centrifugal blower dry-bulb temperature transmitter and relative humidity transmitter, dry-bulb temperature transmitter, relative humidity transmitter, centrifugal blower and compressor are connected the PLC controller respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206160891U CN201903137U (en) | 2010-11-22 | 2010-11-22 | Automatic dehumidifier for calculating dew-point temperature by adopting PLC (Programmable Logic Controller) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206160891U CN201903137U (en) | 2010-11-22 | 2010-11-22 | Automatic dehumidifier for calculating dew-point temperature by adopting PLC (Programmable Logic Controller) |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201903137U true CN201903137U (en) | 2011-07-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206160891U Expired - Fee Related CN201903137U (en) | 2010-11-22 | 2010-11-22 | Automatic dehumidifier for calculating dew-point temperature by adopting PLC (Programmable Logic Controller) |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201903137U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104790191A (en) * | 2015-04-20 | 2015-07-22 | 广东美的制冷设备有限公司 | Method and device for controlling dehumidifier and dehumidifier |
| CN105006257A (en) * | 2015-05-20 | 2015-10-28 | 大亚湾核电运营管理有限责任公司 | Drying device and method for secondary side of million-KW level pressurized water reactor nuclear power station evaporator |
| CN112346498A (en) * | 2020-11-11 | 2021-02-09 | 石家庄通合电子科技股份有限公司 | Temperature control method, temperature control device and cabinet condensation removing equipment |
-
2010
- 2010-11-22 CN CN2010206160891U patent/CN201903137U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104790191A (en) * | 2015-04-20 | 2015-07-22 | 广东美的制冷设备有限公司 | Method and device for controlling dehumidifier and dehumidifier |
| CN105006257A (en) * | 2015-05-20 | 2015-10-28 | 大亚湾核电运营管理有限责任公司 | Drying device and method for secondary side of million-KW level pressurized water reactor nuclear power station evaporator |
| CN105006257B (en) * | 2015-05-20 | 2018-02-13 | 大亚湾核电运营管理有限责任公司 | The drying device and method of kilowatt pressurized water reactor nuclear power station evaporator secondary side |
| CN112346498A (en) * | 2020-11-11 | 2021-02-09 | 石家庄通合电子科技股份有限公司 | Temperature control method, temperature control device and cabinet condensation removing equipment |
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Legal Events
| 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110720 Termination date: 20181122 |