CN114136028A - Control method of liquid spraying valve - Google Patents
Control method of liquid spraying valve Download PDFInfo
- Publication number
- CN114136028A CN114136028A CN202111259164.2A CN202111259164A CN114136028A CN 114136028 A CN114136028 A CN 114136028A CN 202111259164 A CN202111259164 A CN 202111259164A CN 114136028 A CN114136028 A CN 114136028A
- Authority
- CN
- China
- Prior art keywords
- liquid spraying
- valve
- exhaust temperature
- liquid
- 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
- 239000007788 liquid Substances 0.000 title claims abstract description 56
- 238000005507 spraying Methods 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims abstract description 8
- 239000007921 spray Substances 0.000 claims description 7
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000010725 compressor oil Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2115—Temperatures of a compressor or the drive means therefor
- F25B2700/21152—Temperatures of a compressor or the drive means therefor at the discharge side of the compressor
Abstract
The invention discloses a control method of a liquid spraying valve, which sets a liquid spraying starting temperature Td for opening the liquid spraying valve1As a jet entry point, and at a jet start temperature Td1The upper and lower parts of the liquid spraying chamber are provided with wider liquid spraying intervals. The invention enlarges the target value range, ensures that the stable opening degree of the liquid spraying valve is ensured with the maximum precision after the liquid spraying enters under severe conditions, reduces the exhaust fluctuation, avoids the frequent start and stop of the liquid spraying valve, realizes the stable control once the liquid spraying enters, does not cause the large frequent fluctuation of the exhaust temperature, and realizes the stable operation of the liquid spraying valve.
Description
Technical Field
The invention relates to a control method of a liquid spraying valve.
Background
The low-temperature air source heat pump operates under the working conditions of low environmental temperature and high water temperature, the compression ratio is large, the specific volume of breathing in is large, the cooling effect of a compressor is poor, the exhaust temperature of the compressor is increased, and the compressor cannot normally operate.
Disclosure of Invention
In view of the above problems, the present invention provides a control method of a liquid ejection valve, which effectively solves the problems pointed out in the background art.
The technical scheme adopted by the invention is as follows:
a method of controlling a liquid ejection valve, comprising the steps of:
step 1), after the compressor is started, detecting an exhaust temperature Td, and judging whether the exhaust temperature Td reaches a spray liquid starting temperature Td1If reaching the liquid ejection start temperature Td1Controlling the liquid ejecting valve to open to a set initial opening, and if the liquid ejecting start temperature Td is not reached1If yes, keeping the liquid spraying valve closed, continuously detecting the exhaust temperature Td, and repeating the step 1);
step 2), detecting an exhaust temperature Td under the opening state of the liquid spraying valve, if the exhaust temperature Td is in a set liquid spraying interval a, keeping the liquid spraying valve at the current opening, and if the exhaust temperature Td is lower than the lower limit value of the liquid spraying interval a and does not reach the lower limit protection value Td0Controlling the liquid spraying valve to reduce the opening degree and repeating the step 2), if the exhaust temperature Td is higher than the upper limit value of the liquid spraying interval a, controlling the liquid spraying valve to increase the opening degree and repeating the step 2), if the exhaust temperature Td is less than or equal to the lower limit protection value Td0And (3) closing the liquid spraying valve and repeating the step 1).
The invention sets the spray starting temperature Td of the spray valve opening1As a jet entry point, and at a jet start temperature Td1Set up the interval a of the hydrojet of broad from top to bottom, the target value scope has been enlarged, guarantee under the adverse conditions, the back is entered to the hydrojet, the stable aperture of hydrojet valve is guaranteed to the maximum accuracy, it is undulant to reduce the exhaust, avoid hydrojet valve frequently to open and stop, realized in case get into the hydrojet, just can carry out stable control, can not cause exhaust temperature frequent fluctuation by a wide margin, the steady operation of hydrojet valve has been realized, and target value scope is too narrow among the current control scheme, cause the hydrojet valve incessantly to adjust and start and stop, the system can't be to the stop, the system is tooThe stable operation, the incessant hydrojet is started and stopped, has diluted the compressor oil film, causes the damage to the compressor.
Drawings
Fig. 1 illustrates a control schematic of the present invention.
Detailed Description
The invention is described in further detail below with reference to specific embodiments and the accompanying drawings.
As shown in fig. 1, a control method of a liquid ejection valve includes the steps of:
step 1), after the compressor is started, detecting an exhaust temperature Td, and judging whether the exhaust temperature Td reaches a spray liquid starting temperature Td1I.e. Td ≧ Td1If reaching the liquid ejection start temperature Td1I.e. Td ≧ Td1Controlling the liquid ejecting valve to open to a set initial opening, and if the liquid ejecting start temperature Td is not reached1I.e. Td < Td1If yes, keeping the liquid spraying valve closed, continuously detecting the exhaust temperature Td, and repeating the step 1);
step 2), detecting an exhaust temperature Td under the opening state of the liquid spraying valve, if the exhaust temperature Td is in a set liquid spraying interval a, keeping the liquid spraying valve at the current opening, and if the exhaust temperature Td is lower than the lower limit value of the liquid spraying interval a and does not reach the lower limit protection value Td0Controlling the liquid spraying valve to reduce the opening degree and repeating the step 2), if the exhaust temperature Td is higher than the upper limit value of the liquid spraying interval a, controlling the liquid spraying valve to increase the opening degree and repeating the step 2), if the exhaust temperature Td is less than or equal to the lower limit protection value Td0And (3) closing the liquid spraying valve and repeating the step 1).
Wherein Td is the exhaust temperature, a is the spray interval, Td0Is a lower guard value, Td1For the spray start temperature, Td1Within a interval, Td0Is less than the lower limit value of a.
Finally, it should be noted that the above-mentioned list is only the specific embodiment of the present invention. Obviously, the present invention is not limited to the above embodiments, and many modifications are possible. All modifications which can be derived or suggested by a person skilled in the art from the disclosure of the present invention are to be considered within the scope of the invention.
Claims (1)
1. A method of controlling a liquid ejection valve, comprising the steps of:
step 1), after the compressor is started, detecting an exhaust temperature Td, and judging whether the exhaust temperature Td reaches a spray liquid starting temperature Td1If reaching the liquid ejection start temperature Td1Controlling the liquid ejecting valve to open to a set initial opening, and if the liquid ejecting start temperature Td is not reached1If yes, keeping the liquid spraying valve closed, continuously detecting the exhaust temperature Td, and repeating the step 1);
step 2), detecting an exhaust temperature Td under the opening state of the liquid spraying valve, if the exhaust temperature Td is in a set liquid spraying interval a, keeping the liquid spraying valve at the current opening, and if the exhaust temperature Td is lower than the lower limit value of the liquid spraying interval a and does not reach the lower limit protection value Td0Controlling the liquid spraying valve to reduce the opening degree and repeating the step 2), if the exhaust temperature Td is higher than the upper limit value of the liquid spraying interval a, controlling the liquid spraying valve to increase the opening degree and repeating the step 2), if the exhaust temperature Td is less than or equal to the lower limit protection value Td0And (3) closing the liquid spraying valve and repeating the step 1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111259164.2A CN114136028A (en) | 2021-10-28 | 2021-10-28 | Control method of liquid spraying valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111259164.2A CN114136028A (en) | 2021-10-28 | 2021-10-28 | Control method of liquid spraying valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114136028A true CN114136028A (en) | 2022-03-04 |
Family
ID=80396184
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111259164.2A Pending CN114136028A (en) | 2021-10-28 | 2021-10-28 | Control method of liquid spraying valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114136028A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114719435A (en) * | 2022-03-30 | 2022-07-08 | 浙江中广电器集团股份有限公司 | Control method of heat pump water heater using enhanced vapor injection compressor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014181869A (en) * | 2013-03-21 | 2014-09-29 | Fujitsu General Ltd | Air conditioner |
| CN105465962A (en) * | 2015-12-25 | 2016-04-06 | 珠海格力电器股份有限公司 | Control system, method and device for exhaust temperature of compressor |
| CN106766421A (en) * | 2016-11-30 | 2017-05-31 | 广东美的制冷设备有限公司 | A kind of control method of the electric expansion valve for air-conditioning system |
| CN110195925A (en) * | 2019-05-31 | 2019-09-03 | 宁波奥克斯电气股份有限公司 | A kind of control method and air conditioner of low-temperature air source heat pump spray enthalpy valve |
| CN110230867A (en) * | 2018-03-05 | 2019-09-13 | 维谛技术有限公司 | The progress control method and device of air-conditioning |
-
2021
- 2021-10-28 CN CN202111259164.2A patent/CN114136028A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014181869A (en) * | 2013-03-21 | 2014-09-29 | Fujitsu General Ltd | Air conditioner |
| CN105465962A (en) * | 2015-12-25 | 2016-04-06 | 珠海格力电器股份有限公司 | Control system, method and device for exhaust temperature of compressor |
| CN106766421A (en) * | 2016-11-30 | 2017-05-31 | 广东美的制冷设备有限公司 | A kind of control method of the electric expansion valve for air-conditioning system |
| CN110230867A (en) * | 2018-03-05 | 2019-09-13 | 维谛技术有限公司 | The progress control method and device of air-conditioning |
| CN110195925A (en) * | 2019-05-31 | 2019-09-03 | 宁波奥克斯电气股份有限公司 | A kind of control method and air conditioner of low-temperature air source heat pump spray enthalpy valve |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114719435A (en) * | 2022-03-30 | 2022-07-08 | 浙江中广电器集团股份有限公司 | Control method of heat pump water heater using enhanced vapor injection compressor |
| CN114719435B (en) * | 2022-03-30 | 2023-12-08 | 浙江中广电器集团股份有限公司 | Control method of heat pump water heater using jet enthalpy-increasing compressor |
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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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220304 |