CN104061659B - Air conditioning system - Google Patents
Air conditioning system Download PDFInfo
- Publication number
- CN104061659B CN104061659B CN201410327552.3A CN201410327552A CN104061659B CN 104061659 B CN104061659 B CN 104061659B CN 201410327552 A CN201410327552 A CN 201410327552A CN 104061659 B CN104061659 B CN 104061659B
- Authority
- CN
- China
- Prior art keywords
- pressure
- air
- compressor
- condenser
- refrigerant
- 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.)
- Active
Links
Abstract
The invention discloses an air conditioning system coolant recycling method. A compressor air exhausting opening of an air conditioning system is in serial connection with a one-way valve. When coolants leak or an air conditioner needs to be maintained, the air conditioning system coolant recycling method comprises the steps of sealing a coolant outlet pipeline of a condenser, detecting return air pressure of a compressor inlet in the air conditioning system, controlling a compressor to be stopped when the return air pressure reaches first preset cut-out pressure and sealing a coolant inlet pipeline of the condenser. The recycling method can recycle coolants of the system in time when the coolants leak or the air conditioner needs to be maintained and prevents the coolants from being discharged into external environment. Thus, the natural environment can be effectively protected, meanwhile health hazards of the coolants to maintaining workers are effectively eliminated, and economical loss caused by coolant waste is avoided. The invention further discloses an air conditioning system where the recycling method is applied.
Description
Technical field
The present invention relates to air-conditioning manufacturing technology field, the recovery side of more particularly, to a kind of air-conditioning system and its refrigerant
Method.
Background technology
The critical pieces such as compressor, condenser, throttling arrangement and evaporimeter are generally comprised, these are main in air-conditioning system
Part is connected by refrigerant pipeline and forms air-conditioning system, during air-conditioning transport or operation of air conditioner, if connecting each
Leakage in refrigerant pipeline between critical piece, and may result in whole air-conditioning system cannot work on.
In current air-conditioning system, occur when leakage needs repairing it is impossible to carry out effectively to refrigerant once refrigerant pipeline
Reclaim, be typically only capable to by the coolant discharging in system in external environment, this not only causes the serious waste of refrigerant, also simultaneously
Ozone layer in air can be caused with destruction to a certain extent, and when maintenance personal carries out the maintenance of air-conditioning system, row
The refrigerant being put in external environment also can cause certain harm to the healthy of maintenance personal.Air-conditioning after maintenance needs weight
New filling refrigerant in system, this for user itself also result in certain economic loss.
Therefore, how when system occurs to reveal or air-conditioning needs to be keeped in repair can to the refrigerant in system and
Shi Huishou, is the technical problem of current those skilled in the art's urgent need to resolve to avoid refrigerant to be discharged in external environment.
Content of the invention
An object of the present invention is to provide a kind of recovery method of air-conditioning system refrigerant, so as system occur leakage or
Person's air-conditioning needs the refrigerant that be retained in system can be reclaimed in time when being keeped in repair, thus avoiding refrigerant pollution environment, and
Reduce economic loss.
Another object of the present invention also resides in a kind of air-conditioning system that can carry out refrigerant recovering in aforementioned manners of offer.
For achieving the above object, following method provided by the present invention：
A kind of recovery method of air-conditioning system refrigerant, the exhaust outlet of compressor in described air-conditioning system is in series with check valve,
In coolant leakage or air-conditioning maintenance, including step：
1) close the refrigerant exit pipeline of condenser；
2) detect the back pressure of suction port of compressor in air-conditioning system, press when described back pressure reaches the first default disconnection
During power, control compressor out of service；
3) close the refrigerant inlet pipeline of described condenser.
Preferably, in normal shutdown, including step：
11) close the refrigerant exit pipeline of described condenser；
12) detect the back pressure of suction port of compressor in air-conditioning system, when described back pressure reaches the second default disconnection
During pressure, control the compressor in air-conditioning system out of service.
Preferably, in above-mentioned recovery method, the described first default opening pressure is less than the described second default opening pressure.
Preferably, in above-mentioned recovery method, the described first default opening pressure is P1, and 0.1MPa≤P1＜ 0.2MPa,
Described second default opening pressure is P2, and 0.2MPa≤P2＜ 0.4MPa.
A kind of air-conditioning system is additionally provided, including being sequentially connected in series and formed the compressor in loop, condenser, section in the present invention
Stream valve and evaporimeter, and the exhaust outlet of described compressor is also serially connected with check valve, this air-conditioning system also includes：
Be arranged between described condenser and described choke valve, and can close described condenser refrigerant exit pipeline
One stop valve；
It is arranged at the first pressure switch in the return line between described evaporimeter and described compressor, in back pressure
When reaching the first default opening pressure, described first pressure switch motion simultaneously makes described compressor power-off；
It is arranged between described check valve and described condenser, and the second of described condenser refrigerant inlet pipeline can be closed
Stop valve.
Preferably, in above-mentioned air-conditioning system, also include：
It is arranged between described condenser and described choke valve, and the electricity of the refrigerant exit pipeline of described condenser can be closed
Magnet valve, described magnetic valve and air-conditioning closing key circuit communication, and when air-conditioning closing key is pressed, described magnetic valve power-off is closed
Close；
It is arranged at the second pressure switch in the return line between described evaporimeter and described compressor, described second pressure
Power switch and described air-conditioning closing key circuit communication, and when air-conditioning closing key is pressed, described second pressure switch is in work
Make state, when described back pressure reaches the second default opening pressure, described second pressure switch motion simultaneously makes described compression
Machine power-off, and described second default opening pressure is more than the described first default opening pressure.
Preferably, in above-mentioned air-conditioning system, the described first default opening pressure is P1, and 0.1MPa≤P1＜ 0.2MPa,
Described second default opening pressure is P2, and 0.2MPa≤P2＜ 0.4MPa.
Preferably, in above-mentioned air-conditioning system, also include the return-air being arranged between described evaporimeter and described compressor
The 3rd pressure switch on pipeline, and when air-conditioning is in running order, described back pressure is less than or equal to described 3rd pressure
During the default cut-in pressure of switch, described 3rd pressure switch action simultaneously makes described solenoid valves conducting；In described return-air pressure
When power reaches the default opening pressure of described 3rd pressure switch, described 3rd pressure switch action simultaneously makes described magnetic valve power-off
Close, wherein said default opening pressure is more than described default cut-in pressure, it is pre- that described default cut-in pressure is more than described second
If opening pressure.
Preferably, in above-mentioned air-conditioning system, also include being arranged between described check valve and described second stop valve
On gas exhaust piping, and the 4th pressure switch for air-conditioning system high voltage protective, and disconnect when described pressure at expulsion reaches the upper limit
During value, described 4th pressure switch action simultaneously makes described compressor power-off；When described pressure at expulsion is reduced to connection value, described
4th pressure switch action makes described compressor energising.
Preferably, in above-mentioned air-conditioning system, described condenser is water cooling type condenser.
By in above technical scheme as can be seen that the present invention provided in air-conditioning system refrigerant recovery method in,
When secondary refrigerant leakage or air-conditioning need repairing, it is first shut off the refrigerant exit pipeline of condenser, now due to compressor of air conditioner still
So in operation, thus the refrigerant retaining in air-conditioning system choke valve, evaporimeter and the pipeline connecting these parts will continue
Sucked by compressor, and be discharged in condenser by the exhaust outlet of compressor, after the refrigerant exit pipeline of condenser is closed,
The back pressure of suction port of compressor in detection air-conditioning system, and when back pressure reaches the first default opening pressure value, then
Think that the refrigerant of suction side residual is essentially completely recovered, now control compressor out of service, be then shut off condenser
Refrigerant inlet pipeline.
After the entrance pipe of condenser is closed, refrigerant will be essentially completely recovered to be deposited to condenser, which achieves
When system occurs leakage or air-conditioning needs to be keeped in repair timely recovery to refrigerant in system, it is to avoid refrigerant outwardly ring
Discharge in border, this not only can be effectively protected natural environment, also effectively eliminate the health to maintenance personal for the refrigerant simultaneously
Harm, and avoid the brought economic loss of refrigerant waste.
In air-conditioning system provided in the present invention, due to being provided with the first of the refrigerant exit pipeline that can close condenser
Stop valve, and the second stop valve of the refrigerant inlet pipeline of condenser can be closed, and also set in the return line of compressor
Put first pressure switch, when back pressure reaches the first default opening pressure, first pressure switch carries out action and makes pressure
When contracting machine power-off, therefore this air-conditioning system secondary refrigerant leakage or need to be keeped in repair, above-mentioned recovery method is can be utilized to carry out
The recovery of refrigerant.
Brief description
Fig. 1 be the embodiment of the present invention provided in secondary refrigerant leakage or air-conditioning maintenance refrigerant recovering method flow process
Schematic diagram；
Fig. 2 be the embodiment of the present invention provided in air-conditioning normal shutdown refrigerant recovering method schematic flow sheet；
Fig. 3 is the structural representation of the air-conditioning system provided in the embodiment of the present invention.
Wherein, 1 is compressor, and 2 is condenser, and 3 is choke valve, and 4 is evaporimeter, and 5 is check valve, and 6 is first
Stop valve, 7 is first pressure switch, and 8 is the second stop valve, and 9 is magnetic valve, and 10 is second pressure switch, and 11 is the 3rd
Pressure switch, 12 is the 4th pressure switch, and 13 is blower fan.
Specific embodiment
One of core purpose of the present invention is to provide a kind of recovery method of air-conditioning system refrigerant, to let out in system
Leakage or air-conditioning need the refrigerant that be retained in system can be reclaimed in time, thus avoiding refrigerant pollution ring when being keeped in repair
Border, and reduce economic loss.
Another core purpose of the present invention is to provide a kind of air-conditioning system that can carry out refrigerant recovering in aforementioned manners.
In order that those skilled in the art more fully understand the solution of the present invention, below in conjunction with the accompanying drawings and specific embodiment party
The present invention is described in further detail for formula.
Refer to Fig. 1, disclosed in this invention recovery method be applied to compressor 1 exhaust outlet and be in series with check valve 5
The recovery of refrigerant in air-conditioning system, wherein, the check valve 5 that compressor 1 exhaust outlet is connected is used for preventing refrigerant return to compression
Inside machine 1, this recovery method, in the case of secondary refrigerant leakage or air-conditioning maintenance, comprises the following steps：
S1) close the refrigerant exit pipeline of condenser 2；
The outlet of the condenser 2 in air-conditioning system is connected with choke valve 3 by refrigerant exit pipeline, the entrance of condenser 2
It is connected with the exhaust outlet of compressor 1 by refrigerant inlet pipeline, when refrigerant needs to be recycled in condenser 2, close cold first
The refrigerant exit pipeline of condenser 2, at this moment enters into the refrigerant within condenser 2 and will not continue to flow to choke valve 3.
S2) detect the back pressure of compressor 1 entrance in air-conditioning system, and when back pressure reaches the first default disconnection
During pressure, control compressor 1 out of service；
When the refrigerant exit pipeline of condenser 2 is closed, whole air-conditioning system will be truncated, due to now compressor 1
The refrigerant being still within running status, therefore choke valve 3, evaporimeter 4 and the pipeline connecting these parts still can be pressed
Contracting machine 1 sucks, and discharges from exhaust outlet after completing compression in compressor 1, and the big I of back pressure reflects compressor 1
Entrance side remain refrigerant number, thus the back pressure of compressor 1 entrance is detected, and reaches first in back pressure
Then it is assumed that the refrigerant noresidue of compressor 1 entrance side during default opening pressure, now control compressor 1 out of service.
S3) close the refrigerant inlet pipeline of condenser 2.
After compressor is out of service, the refrigerant in system has all been discharged in condenser 2 by compressor 1, now
Refrigerant can be dammed in condenser 2, thus completing in secondary refrigerant leakage or sky after the refrigerant inlet pipeline closing condenser 2
Adjust refrigerant recovering during maintenance.
Recovery method by the air-conditioning system refrigerant that can be seen that in above example provided in the embodiment of the present invention is real
Show the timely recovery to refrigerant in system when system occurs leakage or air-conditioning needs to be keeped in repair, it is to avoid refrigerant is outside
Discharge in boundary's environment, this not only can be effectively protected natural environment, also effectively eliminate refrigerant to maintenance personal's simultaneously
Health hazard, and avoid the brought economic loss of refrigerant waste.
In the state of air-conditioning shutdown, by refrigerant recovering to the condenser 2 that security is higher and capacity is larger, to refrigeration
Pipe-line system in air-conditioning has preferable protective effect, the air-conditioning system refrigerant disclosed in this embodiment of the present invention return
In receiving method, it is additionally included in refrigerant recovering method during normal shutdown, as shown in Figure 2 it is generally the case that needing head when shutting down
First carry out power-off operation, such as step S0) press closing key；
During shutdown, the recovery method of this refrigerant includes step：
S11) close the refrigerant exit pipeline of condenser 2；
The outlet of the condenser 2 in air-conditioning system is connected with choke valve 3 by refrigerant exit pipeline, the entrance of condenser 2
It is connected with the exhaust outlet of compressor 1 by refrigerant inlet pipeline, when refrigerant needs to be recycled in condenser 2, close cold first
The refrigerant exit pipeline of condenser 2, at this moment enters into the refrigerant within condenser 2 and will not continue to flow to choke valve 3.
S12) detect the back pressure of compressor 1 entrance in air-conditioning system, press when back pressure reaches the second default disconnection
During power, control the compressor 1 in air-conditioning system out of service.
When the refrigerant exit pipeline of condenser 2 is closed, whole air-conditioning system will be truncated, due to now compressor 1
The refrigerant being still within running status, therefore choke valve 3, evaporimeter 4 and the pipeline connecting these parts still can be pressed
Contracting machine 1 sucks, and discharges from exhaust outlet after completing compression in compressor 1, and the big I of back pressure reflects compressor 1
Entrance side remain refrigerant number, thus the back pressure of compressor 1 entrance is detected, and reaches second in back pressure
Then it is assumed that the refrigerant major part of compressor 1 entrance side is recovered during default opening pressure, compressor 1 is now controlled to stop fortune
OK, because the air exit side of compressor 1 is in series with check valve 5, thus most refrigerant will be dammed check valve 5 with cold
Between the refrigerant exit pipeline of condenser 2.
Purpose due to being reclaimed to refrigerant under normal shutdown state is the refrigerant line in order to protect air-conditioning system,
Need to ensure that refrigerant can quickly be circulated within air-conditioning systems when turning back on, thus only need in normal shutdown to being
Refrigerant in system carries out partially recycled, and the therefore in above-described embodiment second default opening pressure preferably greater than first is default disconnected
Open pressure, when carrying out refrigerant recovering under air-conditioning normal shutdown state, the refrigerant amount retained of compressor 1 entrance side can be more than cold
Refrigerant amount retained when matchmaker reveals or air-conditioning needs repairing, can rapidly enter work shape in order to air-conditioning when starting shooting again
State.
First default opening pressure is P1, the second default opening pressure is P2, P under normal circumstances1More than or equal to 0.1MPa and
Less than 0.2MPa, P2More than or equal to 0.2MPa and less than 0.4MPa.
A kind of air-conditioning system that can carry out refrigerant recovering using above-mentioned recovery method is also disclosed, such as in the embodiment of the present invention
Shown in Fig. 3, this air-conditioning system includes compressor 1, condenser 2, choke valve 3 and the evaporation being sequentially connected in series and being formed loop
Also it is serially connected with check valve 5 on device 4, and the exhaust outlet of compressor 1, also include in this air-conditioning system：
First stop valve 6, the first stop valve 6 is arranged between condenser 2 and choke valve 3, and the first stop valve 6 can seal
Close the refrigerant exit pipeline of condenser 2；
First pressure switch 7, first pressure switch 7 is arranged in the return line between evaporimeter 4 and compressor 1,
When back pressure reaches the first default opening pressure, first pressure switchs 7 actions, and make to connect with first pressure switch 7
Compressor 1 power-off (out of service)；
Second stop valve 8, the second stop valve 8 is arranged between check valve 5 and condenser 2, and the second stop valve 8 can seal
Close the refrigerant inlet pipeline of condenser.
First stop valve 6 and the second stop valve 8 can be for can be manually rotated control, and the stop valve that can be manually rotated control is large-scale
Central air-conditioning in relatively conventional naturally it is also possible in minitype air conditioner setting using switch control rule stop valve.
Need illustrate, so-called in the embodiment of the present invention " can close " specifically refer to the first stop valve, second section
Only the part such as valve and magnetic valve has this kind of function, does not mean that above-mentioned part is in closed state all the time, above-mentioned each part
Also there is opening state.
When leakage in the refrigerant in air-conditioning or air-conditioning needs to be keeped in repair, first the first stop valve 6 is closed, thus
By the closing of the refrigerant exit pipeline of condenser 2, when the refrigerant exit pipeline of condenser 2 is closed, whole air-conditioning system will be by
Block, because now compressor 1 is still within running status, therefore choke valve 3, evaporimeter 4 and the pipe connecting these parts
Refrigerant in road still can be sucked by compressor 1, and complete in compressor 1 compression after from exhaust outlet discharge, back pressure
Big I reflect compressor 1 entrance side remain refrigerant number, when back pressure reaches the first default opening pressure, the
One pressure switch 7 will carry out action, and make the compressor 1 connected with first pressure switch 7 out of service.
After compressor 1 is out of service, the refrigerant in system has all been discharged in condenser 2 by compressor 1, this
When close the second stop valve 8, thus by the closing of the refrigerant inlet pipeline of condenser 2, so that refrigerant is dammed in condenser 2,
Thus completing the refrigerant recovering in secondary refrigerant leakage or air-conditioning maintenance.
In order to optimize the technical scheme in above-described embodiment further, the air-conditioning system provided in the present embodiment is above-mentioned
Embodiment technical, also include：
It is arranged between condenser 2 and choke valve 3 and the magnetic valve 9 of the refrigerant exit pipeline of condenser 2 can be closed, electricity
Magnet valve 9 and air-conditioning closing key circuit communication, and when air-conditioning closing key is pressed, power-off is closed by this magnetic valve 9；
Be arranged in the return line between evaporimeter 4 and compressor 1 second pressure switch 10, second pressure switch with
Air-conditioning closing key circuit communication, and when air-conditioning closing key is pressed, magnetic valve 9 is closed, now second pressure
Switch by running order in access system, when back pressure reaches the second default opening pressure, second pressure switch 10
Action simultaneously makes compressor 1 power-off, and the second default opening pressure should preset opening pressure more than first.
Need to illustrate, so-called air-conditioning closing key is pressed and is not necessarily referring to closing key and is constantly in down state, and
Should be understood to extensive power-off operation, and it is emphasized that second pressure switch 10 and closing key are linkages, that is, close
After switch is pressed, second pressure switch 10 is just linked in system, and this kind is designed primarily for avoiding to be occurred letting out in refrigerant
Leakage or in the case that air-conditioning needs repairing, second pressure switch 10 makes the situation that compressor 1 shifts to an earlier date power-off occur.
Under normal circumstances, in order to ensure refrigerant as far as possible be recovered completely, the first default opening pressure is being more than or equal to
0.1MPa, and less than value in the range of 0.2MPa, the cut-in pressure of first pressure switch 7 is more than or equal to 0.2MPa and be less than
Value in the range of 0.25MPa, in order to ensure that turning back on rear air-conditioning quickly can enter working condition, the second default disconnection
Pressure is more than or equal to 0.25MPa, and less than value in the range of 0.4MPa, the cut-in pressure of second pressure switch 10 is being more than
Equal to 0.4MPa and less than value in the range of 0.45MPa.
Need to illustrate, in the present embodiment, the listed numerical value enumerated only is made with reference to using, according to the difference of refrigerant,
First default opening pressure, the second default opening pressure, the cut-in pressure of first pressure switch 7 and second pressure switch 10
Cut-in pressure is all possible to difference, but need to ensure that first pressure switch 7 and the opening pressure of second pressure switch 10 are respectively less than certainly
The cut-in pressure of body, and the second default opening pressure is more than the first default opening pressure.
Refer to Fig. 3, when air-conditioning is in running order, in order to be adjusted to the aperture of choke valve in air-conditioning 3,
In the return line also including in the present embodiment being arranged between evaporimeter 4 and compressor 1 on the basis of above-described embodiment
3rd pressure switch 11, and when air-conditioning is in running status, when back pressure is less than or equal to the pre- of the 3rd pressure switch 11
If during cut-in pressure, the 3rd pressure switch 11 action, and make magnetic valve 9 energising conducting of connecting with the 3rd pressure switch 11, so that
In the aperture increasing choke valve 3, when back pressure reaches the default opening pressure of the 3rd pressure switch 11, the 3rd pressure switch
11 actions simultaneously make magnetic valve 9 power-off close, in order to reduce the aperture of choke valve 3, the default disconnection of the wherein the 3rd pressure switch
Pressure is more than default cut-in pressure, and in order to avoid first pressure switchs 7 interference to this process, provided in the present embodiment
The cut-in pressure of the 3rd pressure switch 11 be more than the first default opening pressure, be more highly preferred to, the connecing of the 3rd pressure switch 11
Logical pressure is more than the second default opening pressure.
Preferably, the default opening pressure of the 3rd pressure switch 11 is 0.61MPa-1.1MPa, and default cut-in pressure is
0.4-0.6MPa, the numerical value enumerated in certain the present embodiment is only made with reference to using, according to the difference of refrigerant, the 3rd pressure switch
11 default opening pressure and default cut-in pressure are also possible to difference, but need to ensure the default opening pressure of the 3rd pressure switch 11
More than its default cut-in pressure, and default cut-in pressure is more than the first default opening pressure.
Because when operation just started shooting by air-conditioning, the substantial amounts of refrigerant in condenser 2 will be by choke valve 3, now choke valve 3
Aperture also not up to balance, the refrigerant in evaporimeter 4 is unable to evaporating completely, and partially liq refrigerant flows to compressor 1, return-air pressure
Power increases, and when pressure reaches the default opening pressure of the 3rd pressure switch 11, the 3rd pressure switch 11 will carry out action, and make
Magnetic valve 9 cuts out, and to reduce the flow flowing into the refrigerant in evaporimeter 4, prevents liquid coolant from entering in compressor 1 and liquid
Hit；After magnetic valve 9 power-off is closed, because air-conditioning system refrigerant circulation is cut off, now compressor 1 is still within running status,
Therefore the refrigerant in choke valve 3, evaporimeter 4 and the pipeline connecting these parts still can be sucked by compressor 1, return line
In refrigerant constantly reduce, back pressure is gradually lowered, and works as the pressure drop of the return line between evaporimeter 4 and compressor 1
During the default cut-in pressure of the as little as the 3rd pressure switch 11, the 3rd pressure switch 11 will carry out action again, to make magnetic valve
9 energising conductings, thus being constantly opened and closed by magnetic valve 9, make the aperture of choke valve 3 reach balance, to ensure the peace of compressor 1
Row for the national games.
In order to be further ensured that the safe operation of whole air-conditioning system, on the basis of above-described embodiment, in the present embodiment
On the gas exhaust piping also including being arranged between check valve 5 and the second stop valve 8, and for air-conditioning system high voltage protective
Four pressure switches 12, as shown in Figure 3, when the pressure at expulsion of compressor 1 reaches the upper limit cut off value of the 4th pressure switch 12,
4th pressure switch 12 action simultaneously makes compressor 1 power-off of series connection with it, when pressure at expulsion is reduced to the 4th pressure switch 12
During connection value, the 4th pressure switch 12 action makes compressor 1 be energized.
This kind is mainly designed to protect the refrigeration pipe in air-conditioning system, it is to avoid the condenser 2 because of air-conditioning cools down not
Foot, or severe running environment and lead to the situation of the hypertonia in refrigeration pipe to occur, be more highly preferred to, if air-conditioning control
The pressure at expulsion of the compressor 1 that device processed receives reaches the upper limit cut off value of the 4th pressure switch 12 repeatedly, and has controlled compression
After machine 1 is repeated three break-makes, air-conditioning will no longer carry out automatic, need to fix a breakdown and manually boot air-conditioning equipment.
The air-conditioning system being previously mentioned in above-described embodiment is in particular for large-scale central air conditioner system, and air-conditioning system
In condenser 2 be preferably water-cooling type condenser.
Specific case used herein is set forth to the principle of the present invention and embodiment, the saying of above example
Bright it is only intended to help and understands the method for the present invention and its core concept.It should be pointed out that the ordinary skill for the art
For personnel, under the premise without departing from the principles of the invention, the present invention can also be carried out with some improvement and modify, these improvement
Also fall in the protection domain of the claims in the present invention with modifying.
Claims (4)
1. a kind of air-conditioning system, including be sequentially connected in series and formed the compressor (1) in loop, condenser (2), choke valve (3) and
Evaporimeter (4), and the exhaust outlet of described compressor (1) is also serially connected with check valve (5) it is characterised in that also including：
It is arranged between described condenser (2) and described choke valve (3), and the refrigerant exit pipe of described condenser (2) can be closed
First stop valve (6) on road；
It is arranged at first pressure switch (7) in the return line between described evaporimeter (4) and described compressor (1), returning
When atmospheric pressure reaches the first default opening pressure, described first pressure switch (7) action simultaneously makes described compressor (1) power-off；
It is arranged between described check valve (5) and described condenser (2), and described condenser (2) refrigerant inlet pipeline can be closed
The second stop valve (8)；
Also include：
It is arranged between described condenser (2) and described choke valve (3), and the refrigerant exit pipe of described condenser (2) can be closed
The magnetic valve (9) on road, described magnetic valve (9) and air-conditioning closing key circuit communication, and when air-conditioning closing key is pressed, described electricity
Magnet valve (9) power-off is closed；
It is arranged at second pressure switch (10) in the return line between described evaporimeter (4) and described compressor (1), described
Second pressure switch (10) and described air-conditioning closing key circuit communication, and when air-conditioning closing key is pressed, described second pressure
Switch (10) is in running order, when described back pressure reaches the second default opening pressure, described second pressure switch
(10) action make described compressor (1) power-off, and described second default opening pressure is more than the described first default opening pressure；
Also include：
It is arranged at the 3rd pressure switch (11) in the return line between described evaporimeter (4) and described compressor (1), and
When air-conditioning is in running order, when described back pressure is less than or equal to the default cut-in pressure of described 3rd pressure switch (11),
Described 3rd pressure switch (11) action simultaneously makes described magnetic valve (9) energising conducting；Reach the described 3rd in described back pressure
During the default opening pressure of pressure switch (11), described 3rd pressure switch (11) action simultaneously makes described magnetic valve (9) power-off close
Close, wherein said default opening pressure is more than described default cut-in pressure, described default cut-in pressure is more than described second to be preset
Opening pressure.
2. air-conditioning system according to claim 1 is it is characterised in that the described first default opening pressure is P1, and 0.1MPa
≤P1＜ 0.2MPa, the described second default opening pressure is P2, and 0.2MPa≤P2＜ 0.4MPa.
3. air-conditioning system according to claim 1 it is characterised in that also include be arranged at described check valve (5) with described
On gas exhaust piping between second stop valve (8), and the 4th pressure switch (12) for air-conditioning system high voltage protective, and work as institute
When stating pressure at expulsion arrival upper limit cut off value, described 4th pressure switch (12) action simultaneously makes described compressor (1) power-off；Work as institute
When stating pressure at expulsion and being reduced to connection value, described 4th pressure switch (12) action makes described compressor (1) be energized.
4. the air-conditioning system according to claim 1-3 any one is it is characterised in that described condenser (2) is water cooling
Type condenser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410327552.3A CN104061659B (en) | 2014-07-10 | 2014-07-10 | Air conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410327552.3A CN104061659B (en) | 2014-07-10 | 2014-07-10 | Air conditioning system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104061659A CN104061659A (en) | 2014-09-24 |
| CN104061659B true CN104061659B (en) | 2017-02-22 |
Family
ID=51549498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410327552.3A Active CN104061659B (en) | 2014-07-10 | 2014-07-10 | Air conditioning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104061659B (en) |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105987548B (en) * | 2015-02-03 | 2019-06-07 | Tcl空调器(中山)有限公司 | Refrigeration system method for detecting operation state and device |
| JP6604051B2 (en) * | 2015-06-26 | 2019-11-13 | ダイキン工業株式会社 | Air conditioning system |
| CN105222281B (en) * | 2015-10-26 | 2018-02-27 | 珠海格力电器股份有限公司 | The method and device of air-conditioning high pressure detection |
| CN105674651B (en) * | 2016-02-17 | 2019-05-17 | 广东美芝制冷设备有限公司 | The adjusting method of air conditioner and its refrigerant content |
| CN105626499B (en) * | 2016-03-14 | 2017-07-28 | 广东美的制冷设备有限公司 | The low-voltage variation method and device of compressor of air conditioner |
| CN105698284B (en) * | 2016-03-14 | 2018-10-19 | 广东美的制冷设备有限公司 | Air-conditioning system and its refrigeration control method and device |
| CN106322860A (en) * | 2016-09-23 | 2017-01-11 | 海信科龙电器股份有限公司 | Unloading valve component for air conditioner and air conditioner |
| JP6278094B1 (en) * | 2016-10-28 | 2018-02-14 | ダイキン工業株式会社 | Air conditioner |
| CN106595149A (en) * | 2016-11-22 | 2017-04-26 | 珠海格力电器股份有限公司 | Refrigerant recovery method and device of air conditioner |
| JP6875423B2 (en) * | 2017-01-19 | 2021-05-26 | 三菱電機株式会社 | Refrigeration cycle equipment |
| CN106595159A (en) * | 2017-01-20 | 2017-04-26 | 合肥天鹅制冷科技有限公司 | Device and method for preventing liquid impact of compressor |
| CN107062396A (en) * | 2017-03-14 | 2017-08-18 | 奥克斯空调股份有限公司 | A kind of air-conditioning system and its receipts fluorine method |
| CN107228501B (en) * | 2017-05-24 | 2023-12-01 | 广东开利暖通空调股份有限公司 | Air conditioner |
| CN107990501B (en) * | 2017-11-27 | 2020-05-05 | 宁波奥克斯电气股份有限公司 | Refrigerant recovery method and air conditioner |
| CN110805952B (en) * | 2019-11-26 | 2023-11-07 | 珠海格力电器股份有限公司 | Rotatable stop valve, air conditioning system and control method of air conditioning system |
| CN111207504A (en) * | 2020-01-13 | 2020-05-29 | 珠海格力电器股份有限公司 | Air conditioning system and refrigerant recovery control method |
| CN113669839B (en) * | 2021-08-30 | 2022-11-25 | 海信（广东）空调有限公司 | Method for detecting refrigerant leakage, computer readable storage medium and air conditioner |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6701722B1 (en) * | 2002-05-01 | 2004-03-09 | Samsung Electronics Co., Ltd. | Air conditioner and method of detecting refrigerant leakage therein |
| CN1710359A (en) * | 2005-06-22 | 2005-12-21 | 广东科龙电器股份有限公司 | Safety prealarming device of refrigerating system |
| CN1862130A (en) * | 2005-05-09 | 2006-11-15 | 海尔集团公司 | Controlling method of safety stop of air conditioner |
| CN102937323A (en) * | 2011-08-16 | 2013-02-20 | 中国钢铁股份有限公司 | Air-conditioning set operation protection device |
| CN103267382A (en) * | 2013-06-06 | 2013-08-28 | 江苏创导空调有限公司 | Economical and environment-friendly type vehicle air-conditioning system |
| CN103791594A (en) * | 2012-10-30 | 2014-05-14 | 珠海格力电器股份有限公司 | Heat pump air-conditioning system and control method for avoiding inner leakage of heat pump air-conditioning system |
| CN203629162U (en) * | 2013-07-22 | 2014-06-04 | 广东美的暖通设备有限公司 | Refrigerant-automatic-recovery type air-conditioning system |
| CN204026918U (en) * | 2014-07-10 | 2014-12-17 | 深圳麦克维尔空调有限公司 | A kind of air-conditioning system |
-
2014
- 2014-07-10 CN CN201410327552.3A patent/CN104061659B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6701722B1 (en) * | 2002-05-01 | 2004-03-09 | Samsung Electronics Co., Ltd. | Air conditioner and method of detecting refrigerant leakage therein |
| CN1862130A (en) * | 2005-05-09 | 2006-11-15 | 海尔集团公司 | Controlling method of safety stop of air conditioner |
| CN1710359A (en) * | 2005-06-22 | 2005-12-21 | 广东科龙电器股份有限公司 | Safety prealarming device of refrigerating system |
| CN102937323A (en) * | 2011-08-16 | 2013-02-20 | 中国钢铁股份有限公司 | Air-conditioning set operation protection device |
| CN103791594A (en) * | 2012-10-30 | 2014-05-14 | 珠海格力电器股份有限公司 | Heat pump air-conditioning system and control method for avoiding inner leakage of heat pump air-conditioning system |
| CN103267382A (en) * | 2013-06-06 | 2013-08-28 | 江苏创导空调有限公司 | Economical and environment-friendly type vehicle air-conditioning system |
| CN203629162U (en) * | 2013-07-22 | 2014-06-04 | 广东美的暖通设备有限公司 | Refrigerant-automatic-recovery type air-conditioning system |
| CN204026918U (en) * | 2014-07-10 | 2014-12-17 | 深圳麦克维尔空调有限公司 | A kind of air-conditioning system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104061659A (en) | 2014-09-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104061659B (en) | Air conditioning system | |
| CN104566637B (en) | The control method of multiple on-line system and its indoor set and outdoor unit | |
| JP3109500B2 (en) | Refrigeration equipment | |
| CN204026918U (en) | A kind of air-conditioning system | |
| CN102345915B (en) | Fault operation control method of DC (direct current) convertible frequency air conditioner | |
| CN107560112B (en) | A kind of control method of air conditioner refrigerating high temperature-proof protection | |
| CN102032732A (en) | Air-conditioning system with refrigerant reclaiming function | |
| CN203671764U (en) | Multi-online system | |
| CN104956161B (en) | The load control of Portable refrigerant recovery unit | |
| CN101191686A (en) | Air conditioner for implementing high and low pressure side pressure balancing | |
| CN106196469B (en) | A kind of control device and control method of air-conditioning | |
| CN105180372A (en) | Method and device for controlling air conditioner | |
| CN104990173A (en) | Air conditioner, and fireproof control method, controller and air conditioner system thereof | |
| CN102937323A (en) | Air-conditioning set operation protection device | |
| CN109297148B (en) | Heat pump unit, its cooling activation low-voltage variation method, computer equipment and storage medium | |
| CN113339883A (en) | Air conditioner for preventing refrigerant leakage and control method thereof | |
| CN102235722B (en) | Explosionproof control method for multi-connected air conditioning unit during refrigerant recovery | |
| CN104534632A (en) | Micro-negative-pressure pipeline system and failure processing method | |
| CN203837315U (en) | Air cooled heat pump cold and hot water unit | |
| CN115638560A (en) | Heat pump unit control method and device and heat pump unit | |
| CN110553345A (en) | Automatic unit anti-freezing method and air conditioning system | |
| CN113719457A (en) | Method for quickly switching multistage centrifugal cryogenic liquid pump of air separation device | |
| CN109539616A (en) | Prevent the compressor protection structure and air-conditioning system of refrigerant migration | |
| JPH09318141A (en) | Controller of air conditioner and its control method | |
| CN104896683B (en) | Dropping equipment, air-conditioning system, air conditioning control method and device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |