CN109126908A - Electric expansion valve temperature and humidity control system - Google Patents
Electric expansion valve temperature and humidity control system Download PDFInfo
- Publication number
- CN109126908A CN109126908A CN201811000271.1A CN201811000271A CN109126908A CN 109126908 A CN109126908 A CN 109126908A CN 201811000271 A CN201811000271 A CN 201811000271A CN 109126908 A CN109126908 A CN 109126908A
- Authority
- CN
- China
- Prior art keywords
- control system
- expansion valve
- humidity
- electric expansion
- temperature
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L1/00—Enclosures; Chambers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L7/00—Heating or cooling apparatus; Heat insulating devices
Abstract
Electric expansion valve temperature and humidity control system of the present invention, including control system, control system workflow are as follows: 1) the chamber controller of control system carries out S1 operation according to Current Temperatures setting value T.SP and currently practical measured value T.PV；2) the chamber controller of control system carries out S2 operation according to humidity set point H.SP and current humidity actual measured value H.PV；3) combine step 1) and step 2 that the maximum output MV of temperature and humidity is calculated as the output quantity of electric expansion valve；4) by electric expansion valve driving plate, control electric expansion valve output realizes individually heating or the individually effect of humidification power output, while realizing temperature humidity constant function, reaches and realizes wider temperature humidity range control effect with the smallest power configuration.
Description
Technical field
The present invention relates to testing equipment and testing equipment control technology, in particular to chamber automated control technology is led
Domain, specifically, it shows a kind of electric expansion valve temperature and humidity control system.
Background technique
The temperature and humidity control majority of environmental test chamber at this stage is using capillary or hand expansion valve conduct
Refrigeration system throttling set goes to balance extra cooling capacity, can not adjust refrigerant stream in real time by biggish heating output
Amount.
The temperature and humidity of environmental test chamber at this stage controls amplification, and control precision is low, and energy consumption is big, is unfavorable for looking forward to
The implementation of industry production energy-saving.
Therefore, it is necessary to provide a kind of electric expansion valve temperature and humidity control system to solve the above problems.
Summary of the invention
The object of the present invention is to provide a kind of electric expansion valve temperature and humidity control systems.
Technical solution is as follows:
A kind of electric expansion valve temperature and humidity control system, including control system, control system workflow are as follows:
1) the chamber controller of control system carries out S1 according to Current Temperatures setting value T.SP and currently practical measured value T.PV
Operation；
2) the chamber controller of control system carries out S2 according to humidity set point H.SP and current humidity actual measured value H.PV
Operation；
3) combine step 1) and step 2 that the maximum output MV of temperature and humidity is calculated as the defeated of electric expansion valve
Output；
4) by electric expansion valve driving plate, control electric expansion valve output, realizes individually heating or individually humidification power is defeated
Effect out, while realizing temperature humidity constant function, reach and realizes wider temperature humidity range control with the smallest power configuration
Effect processed.
Further, control electric expansion valve output specifically: defeated with lesser heating when the output quantity that dehumidifies is larger
Output；When the output quantity that cools down is larger, with lesser humidification output quantity.
Further, S1 operation and S2 operation are PID arithmetic.
Compared with prior art, the present invention carries out high-precision to electric expansion valve by controller PID and driver
Control realizes that temperature and humidity control precision is higher, and range is wider；Refrigeration can be increased or decreased according to actual needs simultaneously
Amount realizes wider array of Temperature and Humidity Control with smaller heating and humidification power, reduces energy consumption.
Detailed description of the invention
Fig. 1 is flow diagram of the invention.
Specific embodiment
Embodiment:
Referring to Fig. 1, the present embodiment shows a kind of electric expansion valve temperature and humidity control system, including control system, control system work
Make process are as follows:
1) the chamber controller of control system carries out S1 according to Current Temperatures setting value T.SP and currently practical measured value T.PV
Operation；
2) the chamber controller of control system carries out S2 according to humidity set point H.SP and current humidity actual measured value H.PV
Operation；
3) combine step 1) and step 2 that the maximum output MV of temperature and humidity is calculated as the defeated of electric expansion valve
Output；
4) by electric expansion valve driving plate, control electric expansion valve output, realizes individually heating or individually humidification power is defeated
Effect out, while realizing temperature humidity constant function, reach and realizes wider temperature humidity range control with the smallest power configuration
Effect processed.
Control electric expansion valve output specifically: when the output quantity that dehumidifies is larger, with lesser heating output quantity；Work as cooling
When output quantity is larger, with lesser humidification output quantity.
S1 operation and S2 operation are PID arithmetic.
Compared with prior art, the present invention carries out high-precision to electric expansion valve by controller PID and driver
Control realizes that temperature and humidity control precision is higher, and range is wider；Refrigeration can be increased or decreased according to actual needs simultaneously
Amount realizes wider array of Temperature and Humidity Control with smaller heating and humidification power, reduces energy consumption.
Above-described is only some embodiments of the present invention.For those of ordinary skill in the art, not
Under the premise of being detached from the invention design, various modifications and improvements can be made, these belong to protection model of the invention
It encloses.
Claims (3)
1. a kind of electric expansion valve temperature and humidity control system, it is characterised in that: including control system, control system workflow are as follows:
1) the chamber controller of control system carries out S1 according to Current Temperatures setting value T.SP and currently practical measured value T.PV
Operation；
2) the chamber controller of control system carries out S2 according to humidity set point H.SP and current humidity actual measured value H.PV
Operation；
3) combine step 1) and step 2) that the maximum output MV of temperature and humidity is calculated as the defeated of electric expansion valve
Output；
4) by electric expansion valve driving plate, control electric expansion valve output, realizes individually heating or individually humidification power is defeated
Effect out, while realizing temperature humidity constant function, reach and realizes wider temperature humidity range control with the smallest power configuration
Effect processed.
2. a kind of electric expansion valve temperature and humidity control system according to claim 1, it is characterised in that: control electric expansion valve
Output specifically: when the output quantity that dehumidifies is larger, with lesser heating output quantity；When the output quantity that cools down is larger, use is lesser
Humidify output quantity.
3. a kind of electric expansion valve temperature and humidity control system according to claim 2, it is characterised in that: S1 operation and S2 operation
It is PID arithmetic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811000271.1A CN109126908A (en) | 2018-08-30 | 2018-08-30 | Electric expansion valve temperature and humidity control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811000271.1A CN109126908A (en) | 2018-08-30 | 2018-08-30 | Electric expansion valve temperature and humidity control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109126908A true CN109126908A (en) | 2019-01-04 |
Family
ID=64829211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811000271.1A Pending CN109126908A (en) | 2018-08-30 | 2018-08-30 | Electric expansion valve temperature and humidity control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109126908A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112902510A (en) * | 2021-03-17 | 2021-06-04 | 常州市威硕自动化科技有限公司 | Electronic expansion valve multi-section linear control method and system based on temperature value and humidity value |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1987263A (en) * | 2005-12-19 | 2007-06-27 | 上海约顿机房设备有限公司 | Air conditioner for accurately control temperature and humidity |
| CN201359351Y (en) * | 2009-02-19 | 2009-12-09 | 上海佐竹冷热控制技术有限公司 | Air-conditioning laboratory |
| CN203642415U (en) * | 2013-10-17 | 2014-06-11 | 中国电器科学研究院有限公司 | Energy-saving type air handling unit for constant temperature and humidity test room |
| CN204358909U (en) * | 2014-11-18 | 2015-05-27 | 中国电器科学研究院有限公司 | A kind of temperature and humidity regulation system being applicable to air-conditioner enthalpy difference experiment |
| EP3239626A1 (en) * | 2016-04-27 | 2017-11-01 | PLUM spólka z ograniczona odpowiedzialnoscia | Method for controlling heat pump operation |
-
2018
- 2018-08-30 CN CN201811000271.1A patent/CN109126908A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1987263A (en) * | 2005-12-19 | 2007-06-27 | 上海约顿机房设备有限公司 | Air conditioner for accurately control temperature and humidity |
| CN201359351Y (en) * | 2009-02-19 | 2009-12-09 | 上海佐竹冷热控制技术有限公司 | Air-conditioning laboratory |
| CN203642415U (en) * | 2013-10-17 | 2014-06-11 | 中国电器科学研究院有限公司 | Energy-saving type air handling unit for constant temperature and humidity test room |
| CN204358909U (en) * | 2014-11-18 | 2015-05-27 | 中国电器科学研究院有限公司 | A kind of temperature and humidity regulation system being applicable to air-conditioner enthalpy difference experiment |
| EP3239626A1 (en) * | 2016-04-27 | 2017-11-01 | PLUM spólka z ograniczona odpowiedzialnoscia | Method for controlling heat pump operation |
Non-Patent Citations (1)
| Title |
|---|
| 肖凤明: "《空调器的电路分析与维修》", 30 September 2011, 新时代出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112902510A (en) * | 2021-03-17 | 2021-06-04 | 常州市威硕自动化科技有限公司 | Electronic expansion valve multi-section linear control method and system based on temperature value and humidity value |
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Legal Events
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190104 |
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| RJ01 | Rejection of invention patent application after publication |