CN109855250A - A kind of electric expansion valve open degree control method - Google Patents
A kind of electric expansion valve open degree control method Download PDFInfo
- Publication number
- CN109855250A CN109855250A CN201910049572.1A CN201910049572A CN109855250A CN 109855250 A CN109855250 A CN 109855250A CN 201910049572 A CN201910049572 A CN 201910049572A CN 109855250 A CN109855250 A CN 109855250A
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- Prior art keywords
- expansion valve
- electric expansion
- open degree
- valve open
- ring
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- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000012544 monitoring process Methods 0.000 claims abstract description 4
- 238000005057 refrigeration Methods 0.000 abstract description 8
- 230000007547 defect Effects 0.000 abstract description 2
- 239000003507 refrigerant Substances 0.000 abstract 1
- 238000004378 air conditioning Methods 0.000 description 6
- 238000001816 cooling Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
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- Air Conditioning Control Device (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
The invention discloses a kind of electric expansion valve open degree control methods, pass through real-time monitoring environment temperature, change the open degree of electric expansion valve by calculating, come meet compressor at different ambient temperatures to greatest extent refrigerating capacity efficiently play, and then high refrigeration system Energy Efficiency Ratio.The present invention can avoid expansion valve caused by refrigerant system design defect and open improper and cause refrigerating capacity insufficient, and control effect is better than controlling electric expansion valve open degree by the refrigeration system degree of superheat, and control process has the advantages that successional.
Description
Technical field
The present invention relates to compressor of air conditioner control method field, specifically a kind of electric expansion valve open degree control method.
Background technique
Currently, the climate type that China's air-conditioning uses belongs to T1 class, air-conditioning uses common 35 ± 5 DEG C of environment temperature, country
Relevant criterion civilian goods class air-conditioning cooling in summer operational limit temperature be 43 DEG C, army's category use environment temperature up to 55 DEG C -60 DEG C,
Air-conditioning manufacturing enterprise is that foundation is manufactured by the standard.But due to China's weather diversity and special occasions air-conditioning
The particularity used, use occasion be 27 DEG C -60 DEG C, in use the compressor of air-conditioning due to expansion valve open degree not
When easily leading to the problem that compressor is not normally functioning and compressor cooling capacity cannot play completely, Energy Efficiency Ratio is lower.
The object of the present invention is to provide a kind of electric expansion valve open degree control methods for summary of the invention, to solve existing skill
Art expansion valve of refrigeration system open degree improper the problem of bringing.
In order to achieve the above object, the technical scheme adopted by the invention is as follows:
A kind of electric expansion valve open degree control method, it is characterised in that: real-time monitoring environment temperature TRing, according to environment temperature TRing
Different temperatures region is divided, the open degree of electric expansion valve in compressor is controlled respectively in different temperatures region, wherein
As 27 DEG C of < T of environment temperatureRingAt≤35 DEG C, if the open degree of electric expansion valve is A, A calculates as follows according to linear formula:
Electric expansion valve open degree is A=(20 × (35-TRing)/8+55) × 100%；
As 35 DEG C of < T of environment temperatureRingAt≤60 DEG C, if the open degree of electric expansion valve is B, B calculates as follows according to linear formula:
Electric expansion valve open degree is B=(25 × (60-TRing)/25+30) × 100%.
A kind of electric expansion valve open degree control method, it is characterised in that: as environment temperature TRingAt≤27 DEG C, electricity
Sub- expansion valve open degree is 75%.
A kind of electric expansion valve open degree control method, it is characterised in that: as environment temperature TRingAt 60 DEG C of >, electricity
Sub- expansion valve open degree is 30%.
Electric expansion valve open degree zonal control, avoidable refrigeration system are set compressor of the present invention at different ambient temperatures
Expansion valve caused by meter defect is opened improper and causes refrigerating capacity insufficient.
Inventive refrigeration system compressor expansion valve open degree determines open degree according to environment temperature subregion, better than by making
The cooling system degree of superheat controls electric expansion valve open degree.
There is after electric expansion valve open degree subregion continuity in the present invention, common environment temperature 27 is used according to compressor
DEG C, 35 DEG C and 60 DEG C of limiting condition, to greatest extent play compressor refrigerating capacity, improve refrigeration efficiency ratio.
The beneficial effects of the present invention are as follows:
1, the present invention can play refrigeration system cooling capacity to greatest extent.
2, the present invention can be improved refrigeration system Energy Efficiency Ratio.
3, the present invention can guarantee that limiting condition compressor operates normally.
4, the present invention is implemented simple and direct, reliable, has good market value.
Detailed description of the invention
Fig. 1 is control method flow chart of the present invention.
Fig. 2 be under control method of the present invention electric expansion valve according to the unlatching degree linear of variation of ambient temperature.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples.
As shown in Figure 1, " Y " represents eligible in Fig. 1, " N " represents ineligible.A kind of electric expansion valve open degree
Control method, comprising the following steps:
(1), real-time monitoring ambient temperature value TRing；
(2), carry out segmentation division to compressor use environment: subregion 1 is environment temperature TRing≤ 27 DEG C, subregion 2 is environment temperature
27 DEG C of < TRing≤ 35 DEG C, subregion 3 is 35 DEG C of < T of environment temperatureRing≤ 60 DEG C, subregion 4 is environment temperature TRing60 DEG C of >,
(3), judge environment temperature TRingAt≤27 DEG C, electric expansion valve open degree is 75%:
(4), 27 DEG C of < T of environment temperatureRingAt≤35 DEG C, electric expansion valve open degree is A, and A calculates as follows according to linear formula:
Electric expansion valve open degree is A=(20 × (35-TRing)/8+55) × 100%
(5), 35 DEG C of < T of environment temperatureRingAt≤60 DEG C, electric expansion valve open degree is B, and B calculates as follows according to linear formula:
Electric expansion valve open degree is B=(25 × (60-TRing)/25+30) × 100%
(6), environment temperature TRingAt 60 DEG C of >, electric expansion valve open degree is 30%
According to variation of ambient temperature value and electric expansion valve open degree corresponding relationship, Fig. 2 is formed.Figure it is seen that of the invention
There is continuity for the control process of electric expansion valve open degree, can satisfy the work requirements of compressor of air conditioner.
Claims (3)
1. a kind of electric expansion valve open degree control method, it is characterised in that: real-time monitoring environment temperature TRing, according to environment temperature
TRingDifferent temperatures region is divided, the open degree of electric expansion valve in compressor is controlled respectively in different temperatures region,
In as 27 DEG C of < T of environment temperatureRingAt≤35 DEG C, if the open degree of electric expansion valve is A, A calculates as follows according to linear formula:
Electric expansion valve open degree is A=(20 × (35-TRing)/8+55) × 100%；
As 35 DEG C of < T of environment temperatureRingAt≤60 DEG C, if the open degree of electric expansion valve is B, B calculates as follows according to linear formula:
Electric expansion valve open degree is B=(25 × (60-TRing)/25+30) × 100%.
2. a kind of electric expansion valve open degree control method according to claim 1, it is characterised in that: as environment temperature TRing
At≤27 DEG C, electric expansion valve open degree is 75%.
3. a kind of electric expansion valve open degree control method according to claim 1, it is characterised in that: as environment temperature TRing
At 60 DEG C of >, electric expansion valve open degree is 30%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910049572.1A CN109855250A (en) | 2019-01-18 | 2019-01-18 | A kind of electric expansion valve open degree control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910049572.1A CN109855250A (en) | 2019-01-18 | 2019-01-18 | A kind of electric expansion valve open degree control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109855250A true CN109855250A (en) | 2019-06-07 |
Family
ID=66895244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910049572.1A Pending CN109855250A (en) | 2019-01-18 | 2019-01-18 | A kind of electric expansion valve open degree control method |
Country Status (1)
| Country | Link |
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| CN (1) | CN109855250A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1358973A (en) * | 2000-11-10 | 2002-07-17 | Lg电子株式会社 | Method for controlling linear expansion valve of air conditioniner having two compressor |
| US20080216500A1 (en) * | 2007-03-08 | 2008-09-11 | Nordyne Inc. | System and method for controlling an air conditioner or heat pump |
| JP2013117365A (en) * | 2011-12-05 | 2013-06-13 | Mitsubishi Electric Corp | Air conditioner |
| CN105258416A (en) * | 2015-10-09 | 2016-01-20 | 珠海格力电器股份有限公司 | Control method, control device and control system for initial opening degree of electronic expansion valve |
-
2019
- 2019-01-18 CN CN201910049572.1A patent/CN109855250A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1358973A (en) * | 2000-11-10 | 2002-07-17 | Lg电子株式会社 | Method for controlling linear expansion valve of air conditioniner having two compressor |
| US20080216500A1 (en) * | 2007-03-08 | 2008-09-11 | Nordyne Inc. | System and method for controlling an air conditioner or heat pump |
| JP2013117365A (en) * | 2011-12-05 | 2013-06-13 | Mitsubishi Electric Corp | Air conditioner |
| CN105258416A (en) * | 2015-10-09 | 2016-01-20 | 珠海格力电器股份有限公司 | Control method, control device and control system for initial opening degree of electronic expansion valve |
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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: 20190607 |
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| RJ01 | Rejection of invention patent application after publication |