CN102589083A - Defrosting control method for multi-system air conditioning equipment - Google Patents
Defrosting control method for multi-system air conditioning equipment Download PDFInfo
- Publication number
- CN102589083A CN102589083A CN2011100089914A CN201110008991A CN102589083A CN 102589083 A CN102589083 A CN 102589083A CN 2011100089914 A CN2011100089914 A CN 2011100089914A CN 201110008991 A CN201110008991 A CN 201110008991A CN 102589083 A CN102589083 A CN 102589083A
- Authority
- CN
- China
- Prior art keywords
- defrost
- defrosting
- control method
- defrosting control
- reaches
- 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.)
- Granted
Links
- 238000010257 thawing Methods 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000004378 air conditioning Methods 0.000 title claims abstract description 17
- 238000010438 heat treatment Methods 0.000 claims abstract description 5
- 238000005516 engineering process Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000000295 complement effect Effects 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
Landscapes
- Air Conditioning Control Device (AREA)
Abstract
The invention provides a defrosting control method for multi-system air conditioning equipment, which avoids the problem that the air conditioning equipment cannot operate correctly due to the fact that the time for each system of a unit to reach a defrosting ending condition is inconsistent, the system which firstly reaches the defrosting ending condition is mistakenly judged to need defrosting again after being restarted, and low-voltage protection is started for the system. The system A and the system B of the air conditioning equipment respectively comprise a compressor, a four-way valve, a heat exchanger, a fan and a controller, wherein the compressor, the four-way valve and the heat exchanger are connected through a circulating pipeline; the defrosting control method comprises the following steps: s1: the controller judges that the system A reaches a defrosting end condition, and the system B does not meet the defrosting end condition; s2: reversing a four-way valve of the system A, setting a defrosting ending position, and continuing the running of the system B in a defrosting mode; s3: after defrosting of the system B is finished, a defrosting finish condition is achieved; s4: reversing a four-way valve of the system B, and switching the air conditioning equipment into heating operation; s5: and the fans of the system A and the system B are both started.
Description
Technical field
The invention belongs to the control technology field of multisystem air conditioner equipment, relate in particular to a kind of defrosting control method of multisystem air conditioner equipment.
Background technology
Defrost is the very common a kind of technology in the control technology field of air-conditioning equipment, comprises that defrost begins, the setting of defrost termination condition and control method.But there is a defective in the defrosting control method of existing shared blower fan multisystem air conditioner equipment: in the defrost logic; Defrost finishes when a system (system A); Reach defrost end temp condition, and another one system (system B) does not reach also when defrosting termination condition, then this system (system A) cross valve switching-over (being that cross valve powers on) and shutdown are waited for; But when defrost finished, system A just was allowed to get into and heats up to another system (system B).Shut down in the process of waiting at the A of system, because environment temperature is lower, the defrost bulb temperature of system A descends, when system's B defrost finishes; System A defrost bulb temperature probably reaches defrost again and begins condition because the defrost complement mark is not set, system think by mistake the A of system not defrost finish; After unit was started shooting again, defrost was again thought by system, and at this moment cross valve powers on; But blower fan does not leave, and the low-voltage variation state appears in system, causes the air-conditioning equipment can't true(-)running thus.
Summary of the invention
The object of the present invention is to provide a kind of defrosting control method of multisystem air conditioner equipment; Avoid each system of unit inconsistent owing to reaching the defrosting termination condition time; And after producing the system reach the defrosting termination condition earlier and starting shooting again; Think defrost again by mistake, that system starts low-voltage variation and cause the air-conditioning equipment can't the true(-)running problem.
The present invention realizes through following technical scheme:
The defrosting control method of multisystem air conditioner equipment; Said air-conditioning equipment includes A of system and the B of system at least; System A and the B of system have included compressor, cross valve, throttling arrangement, heat exchanger, blower fan and controller, and compressor, cross valve, throttling arrangement and heat exchanger are connected through circulation line; It is characterized in that: said defrosting control method comprises the steps
S1: controller judges that the A of system reaches the defrost termination condition, and the B of system does not satisfy the defrost termination condition;
The cross valve switching-over of S2: system A is provided with the defrost stop bits, and system B continues the defrost mode operation;
S3: system B defrost finishes, and reaches the defrost termination condition;
The cross valve switching-over of S4: system B, air-conditioning equipment changes heating operation over to;
The blower fan of S5: system A and the B of system is all opened.
Beneficial effect of the present invention is following:
The defrosting control method of multisystem air conditioner equipment of the present invention; When each system all satisfies the defrost termination condition,,, the temperature that one of them system's defrost bulb is experienced begins temperature even having reached defrost again because the defrost stop bits is set; But owing to do not satisfy the compressor condition of accumulated running time; So can not repeat defrost, but the operation of the direct transformation of ownership heat of unit, blower fan and cross valve are opened.This technology can make unit performance more reliable, can avoid: after defrost finished, this another system's defrost of system-down wait finished to get into and heats, after shutdown; Unit defrost bulb temperature descends because the defrost complement mark is not set, system think by mistake this unit not defrost finish; After unit was started shooting again, defrost was again thought by system, and at this moment cross valve powers on; But blower fan does not leave, and system starts low-voltage variation, causes the situation that air-conditioning equipment can't true(-)running to take place thus.
Description of drawings
Fig. 1 is the schematic flow sheet of the defrosting control method of multisystem air conditioner equipment of the present invention;
Fig. 2 is the air-conditioning equipment structural representation of the defrosting control method of multisystem air conditioner equipment of the present invention.
The specific embodiment
Ask for an interview Fig. 1 to Fig. 2; The invention discloses a kind of defrosting control method of dual system air-conditioning equipment; Said air-conditioning equipment includes A of system and the B of system, and system A and the B of system have included compressor 1, cross valve 5, first heat exchanger 21 and second heat exchanger 22, throttling arrangement 3, blower fan 4 and controller, and compressor 1, cross valve 5, throttling arrangement 3 are connected through circulation line with heat exchanger; Shared second heat exchanger 22 of system A and the B of system; Second heat exchanger 22 is provided with water inlet 22a and water outlet device 22b, and first heat exchanger 21 is an air cooling heat exchanger, and it has water machine 4.When unit carried out heating operation, first heat exchanger 21 promptly might produce frost, need carry out first heat exchanger 21 is carried out defrost; Wherein, said defrosting control method comprises the steps:
S1: controller judges that the A of system reaches the defrost termination condition, and the B of system does not satisfy the defrost termination condition;
The cross valve switching-over of S2: system A is provided with the defrost stop bits, and system B continues the defrost mode operation;
S3: system B defrost finishes, and reaches the defrost termination condition;
The cross valve switching-over of S4: system B, air-conditioning equipment changes heating operation over to;
The blower fan of S5: system A and the B of system is all opened.
Said defrosting control method also comprises the steps:
S6: controller judges that the blower fan of system A and the B of system was all out of service when the A of system or system's B one of which reached defrost and begin condition;
S7: system A and the B of system all get into the defrost operational mode.
Among step S1, the S3, the Rule of judgment of defrost termination condition is:
Defrost bulb temperature reaches the defrost end temp, and accumulative total reaches and to continue defrost the time is set the defrost time.
Among the step S2, the method that the defrost stop bits is set is following:
Send information to controller, make compressor accumulated running time zero clearing.
Among the step S6, the Rule of judgment that defrost begins condition is:
Defrost bulb temperature reaches that defrost begins temperature and compressor accumulated running time reaches the stipulated time.
Multisystem air conditioner equipment is for example gone up the two blower fan systems of air-out, and two blower fans are with opening with stopping.Have only two systems all to change frost (all reaching the defrost termination condition), blower fan could be opened; When arbitrary system reached defrost and begins the condition defrost, two blower fans were with regard to stall, and another system also gets into defrost.
Technical scheme common explain of the present invention is: system A reaches the defrost termination condition; And another one system (system B) does not also reach when defrosting termination condition; Then this system (system A) cross valve switching-over (being that cross valve powers on) and shutdown are waited for; And the defrost stop bits is set, when defrost finished, system A just got into and heats up to another system (system B).Owing to the defrost stop bits is set, begins condition even the temperature that the A of system defrost bulb is experienced has reached defrost again, but also do not repeat defrost.But the operation of the direct transformation of ownership heat of unit, blower fan and cross valve are opened.
Above-mentioned listed concrete implementation is nonrestrictive, to one skilled in the art, is not departing from the scope of the invention, and various improvement and the variation carried out all belong to protection scope of the present invention.
Claims (5)
1. the defrosting control method of multisystem air conditioner equipment; Said air-conditioning equipment includes A of system and the B of system at least; System A and the B of system have included compressor, cross valve, throttling arrangement, heat exchanger, blower fan and controller, and compressor, cross valve, throttling arrangement and heat exchanger are connected through circulation line; It is characterized in that: said defrosting control method comprises the steps:
S1: controller judges that the A of system reaches the defrost termination condition, and the B of system does not satisfy the defrost termination condition;
The cross valve switching-over of S2: system A is provided with the defrost stop bits, and system B continues the defrost mode operation;
S3: system B defrost finishes, and reaches the defrost termination condition;
The cross valve switching-over of S4: system B, air-conditioning equipment changes heating operation over to;
The blower fan of S5: system A and the B of system is all opened.
2. the defrosting control method of multisystem air conditioner equipment as claimed in claim 1 is characterized in that: said defrosting control method also comprises the steps:
S6: controller judges that the blower fan of system A and the B of system was all out of service when the A of system or system's B one of which reached defrost and begin condition;
S7: system A and the B of system all get into the defrost operational mode.
3. the defrosting control method of multisystem air conditioner equipment as claimed in claim 2; It is characterized in that: among step S1, the S3; The Rule of judgment of defrost termination condition is: defrost bulb temperature reaches the defrost end temp, and accumulative total reaches and to continue defrost the time is set the defrost time.
4. like the defrosting control method of claim 1 or 2 or 3 described multisystem air conditioner equipment, it is characterized in that: among the step S2, the method that the defrost stop bits is set is following: send information to controller, make compressor accumulated running time zero clearing.
5. the defrosting control method of multisystem air conditioner equipment as claimed in claim 2; It is characterized in that: among the step S6, the Rule of judgment that defrost begins condition is: defrost bulb temperature reaches that defrost begins temperature and compressor accumulated running time reaches the stipulated time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110008991.4A CN102589083B (en) | 2011-01-17 | 2011-01-17 | Defrosting control method for multi-system air conditioning equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110008991.4A CN102589083B (en) | 2011-01-17 | 2011-01-17 | Defrosting control method for multi-system air conditioning equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102589083A true CN102589083A (en) | 2012-07-18 |
| CN102589083B CN102589083B (en) | 2014-03-19 |
Family
ID=46478095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110008991.4A Active CN102589083B (en) | 2011-01-17 | 2011-01-17 | Defrosting control method for multi-system air conditioning equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102589083B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104180570A (en) * | 2014-07-30 | 2014-12-03 | 珠海格力电器股份有限公司 | Defrosting control method and system for heat pump air conditioning unit |
| CN106476565A (en) * | 2016-10-25 | 2017-03-08 | 珠海格力电器股份有限公司 | Heat pump air conditioning unit, control method thereof and electric motor coach |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1204029A (en) * | 1997-06-27 | 1999-01-06 | 三星电子株式会社 | Defrosting apparatus of air conditioner and method thereof |
| KR20020032071A (en) * | 2000-10-25 | 2002-05-03 | 구자홍 | A defroster and control method for the heat pump type air-conditioner |
| CN2524181Y (en) * | 2001-12-20 | 2002-12-04 | 浙江盾安三尚机电有限公司杭州中央空调研究所 | Multiple system blowing pipe style heat pump defroster |
| CN101832644A (en) * | 2010-05-31 | 2010-09-15 | 宁波海诚电器有限公司 | Air energy water heater and defrosting method thereof |
-
2011
- 2011-01-17 CN CN201110008991.4A patent/CN102589083B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1204029A (en) * | 1997-06-27 | 1999-01-06 | 三星电子株式会社 | Defrosting apparatus of air conditioner and method thereof |
| KR20020032071A (en) * | 2000-10-25 | 2002-05-03 | 구자홍 | A defroster and control method for the heat pump type air-conditioner |
| CN2524181Y (en) * | 2001-12-20 | 2002-12-04 | 浙江盾安三尚机电有限公司杭州中央空调研究所 | Multiple system blowing pipe style heat pump defroster |
| CN101832644A (en) * | 2010-05-31 | 2010-09-15 | 宁波海诚电器有限公司 | Air energy water heater and defrosting method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104180570A (en) * | 2014-07-30 | 2014-12-03 | 珠海格力电器股份有限公司 | Defrosting control method and system for heat pump air conditioning unit |
| CN106476565A (en) * | 2016-10-25 | 2017-03-08 | 珠海格力电器股份有限公司 | Heat pump air conditioning unit, control method thereof and electric motor coach |
| CN106476565B (en) * | 2016-10-25 | 2019-03-26 | 珠海格力电器股份有限公司 | Heat pump air conditioning unit, control method thereof and electric motor coach |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102589083B (en) | 2014-03-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101532705B (en) | Defrosting method of cold and warm type frequency conversion air conditioner | |
| CN102466296B (en) | Defrosting control method applied to heat pump air conditioning unit | |
| CN104246389A (en) | Air conditioning system and defrosting operation method | |
| CN105674648A (en) | Heating and defrosting control method for multi-split air conditioning system | |
| CN105020950A (en) | Defrosting control method of multi-connected air conditioner unit | |
| CN104110776A (en) | Air conditioning system and control method thereof | |
| CN104990321A (en) | Air conditioner and defrosting method thereof | |
| CN104251580A (en) | Air conditioning system | |
| WO2023246147A1 (en) | Air conditioner refrigerant recovery method and apparatus, air conditioner, medium, and program product | |
| CN203534006U (en) | Air-conditioning system | |
| CN103742987A (en) | Defrosting method of fresh-air machine system | |
| CN114151929A (en) | Heat pump air conditioning unit, anti-freezing control method and device thereof and storage medium | |
| CN112880132A (en) | Method and device for defrosting control of air conditioning system and air conditioning system | |
| CN103939999B (en) | Double-refrigerant air conditioner system and control method thereof | |
| CN104456788B (en) | Fresh air processor and fresh air processing method | |
| CN104596000A (en) | Air conditioner and control method of air conditioner | |
| CN104154672A (en) | Parallel multi-split air conditioner system and defrosting control method | |
| CN203533957U (en) | Air-conditioning system | |
| CN100439847C (en) | Plate-type heat exchanger antifreeze apparatus and control method thereof | |
| WO2020037953A1 (en) | Control method and system for air conditioner, storage medium, and processor | |
| CN102589083B (en) | Defrosting control method for multi-system air conditioning equipment | |
| JP2015068544A (en) | Heat exchange ventilator | |
| CN102364270B (en) | Triple co-generation heat pump system control method | |
| CN102818408A (en) | Heat recovery control method of air cooling module | |
| CN203323463U (en) | Multi-water-source-connected air-conditioning system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |