CN1888658B - Control method for preventing air conditioner liquid refrigerant from inflowing - Google Patents
Control method for preventing air conditioner liquid refrigerant from inflowing Download PDFInfo
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- CN1888658B CN1888658B CN2005100140192A CN200510014019A CN1888658B CN 1888658 B CN1888658 B CN 1888658B CN 2005100140192 A CN2005100140192 A CN 2005100140192A CN 200510014019 A CN200510014019 A CN 200510014019A CN 1888658 B CN1888658 B CN 1888658B
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Abstract
This invention relates to air conditioner controlling method for preventing liquid refrigerants from inflow. It includes: step one, during cold chamber operation of air conditioner, whether the temperature of compressor suction calandria is within T1DEG C is judged; step two, for the said judged consequence, if it is, the heat air by-pass valve is opened. The exhausted heat air is provides to oil container; if it is not, the heat air by-pass valve is kept shut. This invention can use the compressor exhausted heat air to gasify the liquid refrigerants flowing in the said suction calandria of compressor. Thus, it can prevent liquid refrigerants from flowing into inside of compressor and prevent compressor overloading.
Description
Technical field
The present invention relates to a kind of control method of air-conditioner; The control method that liquid refrigerants flows into that prevents that particularly relates to a kind of air-conditioner; Can when carrying out the cold-room operation, prevent that compressor from sucking the rapid reduction of temperature of end and causing liquid refrigerants to be fed directly in the compressor.
Background technology
Air-conditioner is arranged on spaces such as room, parlor, office or place of business; And be used to regulate temperature, humidity, pure and fresh degree and the air-flow of air; The device of the indoor environment that makes it to keep comfortable, above-mentioned air-conditioner is divided into integral type (window type) and split type (separate type or splittype) substantially.
Above-mentioned integral air conditioner is identical on function with detachable air conditioner, and wherein, integral air conditioner will cool off and the heat release function integration, can or hang on the window at the wall upper drill hole in room and install; Detachable air conditioner is installed the indoor set that is used to carry out cold/greenhouse function in the indoor, the off-premises station that is used to carry out heat release and compression function is installed in the outside, and connects above-mentioned indoor set that is separated from each other and off-premises station through coolant piping.
A common indoor set correspondence is equipped with an off-premises station; But under the situation of building, then need buy many off-premises stations corresponding to the indoor set that each room is installed, at first with a plurality of rooms; Not attractive in appearance in appearance; And uneconomical again, and each off-premises station need guarantee certain area space, thus cause effectively usage space.
Therefore, continually develop out many indoor sets of connection in the off-premises station, and the disposable combined air conditioner that a plurality of rooms is carried out the cooling-heating room operation.
Fig. 1 is the structure chart of the refrigerant circulation of general combined air conditioner.
As shown in the figure; Be provided with in the above-mentioned combined air conditioner and be installed in indoor indoor unit (unit) 10 and be installed in outdoor outdoor unit 1, wherein, be provided with a plurality of indoor heat exchanger 11a that are used to carry out cold/greenhouse function in the above-mentioned indoor unit 10; 11b, 11c.
Be provided with in the above-mentioned outdoor unit 1: the reverse-phase compressor 2 and constant speed compressor 4 that are used for compression refrigerant; The outdoor heat exchanger 6 that makes the refrigerant of above-mentioned compression carry out heat release; Be arranged at the rear of above-mentioned outdoor heat exchanger, and promote the outdoor fan 8 of refrigerant heat release.
Respectively be provided with electric expansion valve (LEV) 13a in the downstream of above-mentioned outdoor heat exchanger 6,13b, 13c makes when carrying out the cold-room operation, and refrigerant is flowing into corresponding indoor heat exchanger 11a, carries out puffing before the 11b, 11c.
In addition; Above-mentioned reverse-phase compressor 2 and constant speed compressor 4 respectively have the compressed capability of the maximum cold/greenhouse load that is equivalent to indoor unit 10 half the (50%); And refrigerant collaborated at the outlet side of above-mentioned each compressor before flowing into above-mentioned outdoor heat exchanger 6.
Operation in the face of general combined air conditioner describes (following for carrying out the situation of cold-room operation) down.
Gaseous coolant at the HTHP that compresses in the compressor 2,4 will be directed in the outdoor heat exchanger 6 through cubic valve (not shown), and above-mentioned refrigerant carries out the heat release condensation in through the process of outdoor heat exchanger 6; And convert the liquid refrigerants of HTHP into, and then through above-mentioned electric expansion valve 13a, 13b; After 13c converts the state of low-temp low-pressure into; To flow into above-mentioned indoor heat exchanger 11a, 11b is among the 11c.At this moment, the above-mentioned refrigerant that flow into indoor heat exchanger will convert gaseous coolant into through evaporation, and under the effect of cubic valve (not shown), be directed to the suction end of compressor 2,4 subsequently.
Wherein, the adjustment that need carry out the space (that is, indoor) of air conditioning will be by through indoor heat exchanger 11a, 11b, the refrigerant of 11c and the completion of the heat exchange operation of room air.Promptly; Refrigerant through indoor heat exchanger will be from through absorbing heat and evaporating the air of indoor heat exchanger; Room air is the temperature step-down under above-mentioned evaporation; And be discharged to again and need carry out in the space of air conditioning, through carrying out above-mentioned heat exchange operation repeatedly, need carry out the temperature step-down gradually in the space of air conditioning.
Compare with the general air-conditioner that only is connected an indoor set in the off-premises station, above-mentioned combined air conditioner can carry out cold/greenhouse operation through off-premises station is disposable to a plurality of rooms, have advantage at aspect power or the expense and space utilization aspect.
In addition; When air-conditioner is proceeded the cold-room operation of low temperature; The bulk temperature of the refrigerant of circulation will reduce gradually in the refrigerant circulation in sequence of compressor → outdoor heat exchanger → electric expansion valve → indoor heat exchanger → compressor; Thereby cause through indoor heat exchanger but do not have vaporized liquid refrigerants to be drawn in the suction calandria of compressor, the amount of above-mentioned liquid refrigerants is along with the low temperature cold-room operation that continues to carry out and increase gradually.
In order to prevent that above-mentioned liquid refrigerants is fed directly to the suction calandria of compressor, the oil conservator (not shown) that is used to filter liquid refrigerants is installed in the suction calandria of above-mentioned compressor generally.When generating a spot of liquid refrigerants, above-mentioned oil conservator filters it, and prevents that above-mentioned liquid refrigerants is fed directly in the compressor.But when the amount of liquid refrigerants exceeds the capacity of oil conservator when continuing to carry out the cold-room operation, the above-mentioned liquid refrigerants that exceeds the oil conservator capacity will be drawn into the inside of compressor.
When above-mentioned liquid refrigerants flows into the inside of compressor, will cause compressor to be in overload state, and cause accessory to be damaged and can't use.Therefore, when carrying out the cold-room operation, other corresponding device thereof need be set in order to prevent liquid refrigerants to be fed directly to the inside of compressor.
Summary of the invention
In order to solve the problem that exists in the above-mentioned prior art; The object of the present invention is to provide a kind of control method that liquid refrigerants flows into that prevents of air-conditioner; Carrying out cold-room when operation, the temperature that can prevent the suction calandria of compressor sharply reduces and causes liquid refrigerants to be fed directly to the inner phenomenon of compressor.
In order to achieve the above object; The control method that prevents the liquid refrigerants inflow of the air-conditioner among the present invention is characterized in that, includes following several steps: the 1st step; In the cold-room operation of air-conditioner, judge whether the temperature of compressor suction calandria is in T1 ℃; The 2nd step, the result who in above-mentioned the 1st step, judges when the temperature of above-mentioned compressor suction calandria is in T1 ℃ the time, opens (on) hot-air flow divided valve 202 and the hot gas of discharging in the compressor is supplied in the oil conservator 190; The result who in above-mentioned the 1st step, judges is when the temperature of above-mentioned compressor suction calandria is not in T1 ℃ the time, with (off) state of closing that keeps above-mentioned hot-air flow divided valve 202.
Wherein, the present invention is characterized in that: above-mentioned the 1st step is to carry out when above the t1 time in the driven compressor time.
And; The present invention is characterized in that; Also include: after above-mentioned the 2nd step; Discharge the temperature of comb when exceeding T3 ℃ when the temperature of compressor suction calandria exceeds T2 ℃ or compressor, will close (off) above-mentioned hot-air flow divided valve 202 that is in unlatching (on) state, thereby prevent that hot gas from supplying to the step in the oil conservator 190.
According to aforesaid the present invention; The liquid refrigerants that flows in the suction calandria of the hot gas of discharging in the compressor capable of using to above-mentioned compressor gasifies; Thereby it is inner and cause compressor to be in overload state to prevent that liquid refrigerants from flowing into compressor, and causes accessory to be damaged and can't use.
The control method that prevents the liquid refrigerants inflow of the air-conditioner in according to the present invention; With the refrigerant of the HTHP of discharging in the compressor (promptly; Hot gas) directly supply to oil conservator through the hot gas shunting exhaust pipe; The liquid refrigerants of the mistake volume that flows in the above-mentioned compressor suction calandria is gasified, thereby solve the problem of the liquid refrigerants that exceeds the capacity of above-mentioned oil conservator and flow into.
Description of drawings
Fig. 1 is the structure chart of the refrigerant circulation of general combined air conditioner;
Fig. 2 is the overall structure figure of the combined air conditioner in one embodiment of the invention;
Fig. 3 is for preventing the block diagram of the air-conditioner structure that liquid refrigerants flows into;
Fig. 4 is for the flow chart that prevents the control method that liquid refrigerants flows into of the air-conditioner among the present invention is described.
The critical piece description of reference numerals
140: indoor set 180: off-premises station
182: reverse-phase compressor 184: constant speed compressor
186: lubricant separator 187: solenoid valve
188: shunting exhaust pipe 189: the machine oil collecting fitting
192: cubic valve 190: oil conservator (accumulator)
194: outdoor heat exchanger 196: outdoor fan
200: hot gas shunting exhaust pipe 202: hot-air flow divided valve
300: compressor suction calandria temperature sensor 302: compressor is discharged the comb temperature sensor
The specific embodiment
With reference to the accompanying drawings the control method that liquid refrigerants flows into that prevents of the air-conditioner among the present invention is carried out more detailed explanation.
Fig. 2 is the overall structure figure of the combined air conditioner in one embodiment of the invention; Fig. 3 is in order to prevent the block diagram of the air-conditioner structure that liquid refrigerants flows into.
As shown in the figure, the indoor indoor set 140 that indoor heat exchanger 142 and indoor fan 144 are set that is separately installed with, above-mentioned indoor set 140 will be connected with the off-premises station 180 of outdoor mounted through comb (pipe).
The compound compressor of reverse-phase compressor 182 and constant speed compressor 184 formations is installed in the above-mentioned off-premises station 180, and above-mentioned compressor is the device that the refrigerant that circulates in the air-conditioner is carried out the HTHP compression and discharges.In addition; The outlet side of above-mentioned reverse-phase compressor 182 is equipped with and is used for lubricant separator 186 that refrigerant is separated with machine oil; Said engine oil separator 186 is in refrigerant and machine oil that the outlet side of reverse-phase compressor 182 is discharged simultaneously; Independent separated oil, and it is recycled to the device of compressor, the machine oil that holds in the said engine oil separator 186 will flow into the input of reverse-phase compressor 182 through solenoid valve 187 and shunting exhaust pipe 188.
The refrigerant of discharging in each outlet side of above-mentioned compressor 182,184 will pass through said engine oil separator 186 remove the machine oil that wherein contains after, flow into cubic valve 192 under the state that collaborates through machine oil collecting fitting 189.Wherein, above-mentioned cubic valve 192 is according to cold-room operation or greenhouse operation and to flowing into or discharging in the mobile device of changing of the refrigerant of above-mentioned compressor 182,184.Under the situation of carrying out the cold-room operation, refrigerant will flow into/discharge with the solid arrow direction among Fig. 2; Under the situation of carrying out the greenhouse operation, refrigerant then flows into/discharges with the dotted arrow direction among Fig. 2.Thus, under the situation of cold-room operation, the refrigerant of discharging in the above-mentioned compressor 182,184 will flow into outdoor heat exchanger 194; And under the situation of carrying out the greenhouse operation, the refrigerant of discharging in the above-mentioned compressor 182,184 then flow in the indoor set 140.
One end of above-mentioned outdoor heat exchanger 194 is connected in cubic valve 192, and the other end then is connected in electric expansion valve 162.Therefore, through above-mentioned outdoor heat exchanger 194 and carry out the refrigerant of heat exchange with outdoor air will be through above-mentioned electric expansion valve (LEV) 162, above-mentioned electric expansion valve 162 is with the refrigerant puffing and converts the device of the refrigerant of low-temp low-pressure into.Convert the refrigerant of low-temp low-pressure state into through above-mentioned electric expansion valve 162, will be through flowing in the indoor set 140 behind receiver (receiver) 164 and the drier (drier) 166.
The refrigerant of the low-temp low-pressure that flows in the above-mentioned indoor set 140 is under the effect of indoor fan 144; To carry out heat exchange with the room air of process in the indoor heat exchanger 142; And reduce the temperature of indoor (that is, need carry out the space of air conditioning) through above-mentioned heat exchange operation.
Simultaneously; Because an end of above-mentioned indoor set 140 is connected in cubic valve 192; After the refrigerant that carries out heat exchange through above-mentioned indoor heat exchanger 142 will flow into cubic valve 192, and under the guiding of above-mentioned cubic valve 192, flow in the oil conservator (accumulator) 190.Wherein, above-mentioned oil conservator 190 is connected in the suction portion of reverse-phase compressor 182 and constant speed compressor 184, thereby can prevent through indoor set 140 but do not have vaporized liquid refrigerants to flow in the above-mentioned compressor 182,184.
In addition; Compressor suction calandria temperature sensor 300 is installed in the suction portion of above-mentioned oil conservator 190; Above-mentioned compressor suction calandria temperature sensor 300 is used to detect the temperature (this temperature with the compressor suction calandria is consistent) of the refrigerant that flows in the compressor 182,184; Compressor is installed in the discharge portion of above-mentioned oil conservator 190 discharges comb temperature sensor 302, above-mentioned compressor is discharged the temperature (this is consistent with the temperature that compressor is discharged comb) that comb temperature sensor 302 is used to detect the refrigerant of discharging in the compressor 182,184.
Simultaneously; Hot gas shunting exhaust pipe (hot gas bypass pipe) 200 is installed between the discharge side comb of above-mentioned compressor and the suction side comb of compressor; Above-mentioned hot gas shunting exhaust pipe 200 is used for the refrigerant [to call ' hot gas (hot gas) ' in the following text] of the HTHP of discharging in the compressor 182,184 is discharged to the suction side comb of compressor.
When air-conditioner carries out the cold-room operation of low temperature; The bulk temperature of the refrigerant of circulation will reduce gradually in the above-mentioned refrigerant circulation; Thereby cause through indoor heat exchanger but do not have vaporized liquid refrigerants to be drawn in the suction calandria of compressor, the amount of above-mentioned liquid refrigerants is along with the low temperature cold-room operation that continues to carry out and increase gradually.In order to prevent that above-mentioned liquid refrigerants is fed directly to the suction calandria of compressor, the general oil conservator 190 that is used to filter liquid refrigerants of in the suction calandria of above-mentioned compressor, installing.
When generating a spot of liquid refrigerants, above-mentioned oil conservator 190 is its filtration, and prevents that above-mentioned liquid refrigerants is fed directly in the compressor.But when the amount of liquid refrigerants exceeds the capacity of oil conservator when continuing to carry out the cold-room operation, the above-mentioned liquid refrigerants that exceeds oil conservator 190 capacity will be drawn into the inside of compressor.When the above-mentioned liquid refrigerants that exceeds oil conservator 190 capacity flows into the inside of compressor, will cause compressor to be in overload state, and cause accessory to be damaged and can't use.
In order to prevent above-mentioned situation hot gas shunting exhaust pipe 200 is installed; When the liquid refrigerants of the more amount that exceeds above-mentioned oil conservator 190 capacity flows into the suction calandria of compressor; The hot gas of discharging in the discharge comb with compressor blows in the above-mentioned oil conservator 190; The liquid refrigerants of oil conservator 190 internal reservoir is gasified, and be converted into gaseous coolant, thereby can prevent that above-mentioned liquid refrigerants is fed directly to the problem that compressor inside causes.
In addition; The hot-air flow divided valve 202 of the opening and closing operation that is used to regulate comb is installed in the above-mentioned hot gas shunting exhaust pipe 200; Close under the state of (off) at above-mentioned hot-air flow divided valve 202; The hot gas of discharging in the discharge side comb of compressor 182,184 will flow into outdoor heat exchanger 194 through cubic valve 192; Open under the state of (on) at above-mentioned hot-air flow divided valve 202; Compressor 182; The part of the hot gas of discharging in 184 the discharge side comb flow into cubic valve 192, and its waste hot air then through behind the hot gas shunting exhaust pipe 200, then flow in the oil conservator 190 through the compressor suction calandria.
The On/Off operation of above-mentioned hot-air flow divided valve 202 is controlled by the control part 400 of air-conditioner; Make temperature, and the temperature of compressor discharge comb temperature sensor 302 detected discharge combs determines the On/Off state of above-mentioned hot-air flow divided valve 202 through compressor suction calandria temperature sensor 300 detected compressor suction calandrias.In one embodiment of this invention; When the temperature of compressor suction calandria is in T1 ℃, for example be in 1 ℃ the time, flow in the oil conservator 190 being judged as too much liquid refrigerants; Thereby open (on) above-mentioned hot-air flow divided valve 202, and hot gas is flow in the above-mentioned oil conservator 190; When the temperature of compressor suction calandria exceeds T2 ℃; For example exceed under 5 ℃ the situation, the temperature of perhaps discharging comb when compressor exceeds T3 ℃, for example exceeds under 100 ℃ the situation; To close (off) above-mentioned hot-air flow divided valve 202, flow in the above-mentioned oil conservator 190 thereby cut off hot gas.
Wherein, The above-mentioned temperature conditions that is used for On/Off hot-air flow divided valve 202 can be changed by the capacity of compressor, the capacity of oil conservator etc.; Therefore, when inflow has too much liquid refrigerants, open hot-air flow divided valve and supply with hot gas; And above-mentioned liquid refrigerants is gasified, this basic fundamental thought of the present invention is not to be defined in aforesaid temperature conditions.
Fig. 4 is for the flow chart that prevents the control method that liquid refrigerants flows into of the air-conditioner among the present invention is described.
As shown in the figure, when the key input part of user's operating air conditioner device started air-conditioner, outdoor fan, indoor fan and compressor started, and made air-conditioner begin operation.When air-conditioner carries out the cold-room operation, refrigerant will be circulated in the cold-room circulation of compressor → outdoor heat exchanger → electric expansion valve → indoor heat exchanger → compressor order, and reduction need be carried out the temperature in the space of air conditioning.
When continuing to carry out the cold-room operation of above-mentioned low temperature, the temperature of the refrigerant that circulates in the above-mentioned cold-room circulation will reduce gradually, and the suction calandria of compressor will be cooled to the degree that the refrigerant that is drawn into the compressor suction calandria keeps liquid condition.Therefore; Judge among the present invention whether the driven compressor time pass through the t1 time (S100 step); The result who in above-mentioned steps (S100 step), judges; When the above-mentioned compressor driving time does not exceed t1 during the time, also flow into liquid refrigerant in the compressor suction calandria with being judged as, thereby make above-mentioned hot-air flow divided valve (off) state (S110) that keeps shut; And the result who in above-mentioned steps (S100 step), judges when the above-mentioned compressor driving time exceeds t1 during the time, then is judged as and possibly flows into liquid refrigerant in the compressor suction calandria, and then carries out next step.
Wherein, The above-mentioned t1 time is time about 1 minute for example, as stated, if will in the compressor suction calandria, flow into liquid refrigerants the time; After compressor is operated, need through the set time, make the above-mentioned refrigerant that is circulated in the cold-room circulation obtain cooling and become liquid condition.In one embodiment of the invention the above-mentioned refrigerant required time of circulation was judged as about 1 minute, and with its primary condition as unlatching (on) above-mentioned hot-air flow divided valve.
And, in above-mentioned S100 step, be judged as the driven compressor time and exceed t1 during the time, judge then whether the temperature of compressor suction calandria is in T1 ℃, for example judge whether be 1 ℃ with interior (S120 step).The result who in above-mentioned steps (S120 step), judges; When the temperature of compressor suction calandria is in T1 ℃; For example be in 1 ℃ the time; With being judged as the liquid refrigerants that possibly flow into volume in the compressor suction calandria, control part (400 among Fig. 3) will be opened (on) hot-air flow divided valve (202 among Fig. 2) (S130 step), and the hot gas of discharging in the compressor is supplied in the oil conservator (190 among Fig. 2) through hot gas shunting exhaust pipe (200 among Fig. 2); On the contrary; The result who in above-mentioned steps (S120 step), judges; When the temperature of compressor suction calandria for not being in T1 ℃; For example be not in 1 ℃ the time, with being judged as the liquid refrigerants that did not also flow into volume in the compressor suction calandria, control part (400 among Fig. 3) then makes above-mentioned hot-air flow divided valve (202 among Fig. 2) (off) state (S110 step) that keeps shut.
When continuing to carry out above-mentioned hot gas of discharging in compressor and supply to the S130 step of oil conservator, under the effect of above-mentioned hot gas, the refrigerant temperature that flows in the compressor will rise, and reduce the cold-room efficient of air-conditioner.Therefore, above-mentioned control part (400 among Fig. 3) need be closed (off) above-mentioned hot-air flow divided valve (202 among Fig. 2) under suitable condition.
In one embodiment of this invention; Read the temperature of above-mentioned compressor suction calandria and the temperature that compressor is discharged comb; Make when said temperature satisfies set condition; Finish being judged as the state that flowed into the volume liquid refrigerants in the above-mentioned compressor suction calandria, thereby will close (off) above-mentioned hot-air flow divided valve that is in unlatching (on) state.
Say in more detail after above-mentioned S130 step, control part (400 among Fig. 3) judges whether the temperature of compressor suction calandria exceeds T2 ℃, for example judges whether to exceed 5 ℃ (S140 steps).Wherein, The result who in above-mentioned steps (S140 step), judges; When the temperature of above-mentioned compressor suction calandria exceeds T2 ℃; Finish being judged as the state that flowed into the volume liquid refrigerants in the compressor suction calandria, and in order to prevent that hot gas from supplying to oil conservator (190 among Fig. 2), and close (off) above-mentioned hot-air flow divided valve (202 among Fig. 2) (S110 step).
But the result who in above-mentioned steps (S140 step), judges when the temperature of above-mentioned compressor suction calandria does not exceed T2 ℃, judges then whether the temperature of compressor discharge comb exceeds T3 ℃, for example judges whether to exceed 100 ℃ (S150 steps).The result who in above-mentioned steps (S150 step), judges; When the temperature of compressor discharge comb exceeds T3 ℃; Press the state that possibly flow into the volume liquid refrigerants in the fast machine suction calandria to finish with being judged as; And in order to prevent that hot gas from supplying to oil conservator (190 among Fig. 2), and close (off) above-mentioned hot-air flow divided valve (202 among Fig. 2) (S110 step); On the contrary; The result who in above-mentioned steps (S150 step), judges; When the temperature of compressor discharge comb does not exceed T3 ℃; Then be judged as the state that possibly flow into the volume liquid refrigerants in the compressor suction calandria and also do not finish, and hot gas is supplied to oil conservator (190 among Fig. 2) and makes above-mentioned hot-air flow divided valve (202 among Fig. 2) be held open (on) state (S130 step) in order to continue.
The control method that prevents the liquid refrigerants inflow of the air-conditioner in according to the present invention; With the refrigerant of the HTHP of discharging in the compressor (promptly; Hot gas) directly supply to oil conservator through the hot gas shunting exhaust pipe; The liquid refrigerants of the mistake volume that flows in the above-mentioned compressor suction calandria is gasified, thereby solve the problem of the liquid refrigerants that exceeds the capacity of above-mentioned oil conservator and flow into.
In addition; In the control method that prevents the liquid refrigerants inflow of the air-conditioner of the present invention in above-mentioned accompanying drawing 3; Point out out the driven compressor time in the S100 step (t1); Compressor suction calandria temperature a plurality of numerical value such as (T1 ℃) in the S120 step are owing to above-mentioned numerical value can be changed by the structure of air-conditioner, the capacity of indoor set, the capacity of compressor etc., so basic fundamental thought of the present invention is not to be defined in aforesaid numerical value.
Claims (1)
1. the control method that prevents the liquid refrigerants inflow of an air-conditioner is characterized in that, comprising:
The 1st step in the cold-room operation of air-conditioner, judges whether the temperature of compressor suction calandria is in T1 ℃;
The 2nd step, the result who in above-mentioned the 1st step, judges when the temperature of above-mentioned compressor suction calandria is in T1 ℃ the time, opens hot-air flow divided valve (202), and the hot gas of discharging in the compressor is supplied in the oil conservator (190); The result who in above-mentioned the 1st step, judges when the temperature of above-mentioned compressor suction calandria is not in T1 ℃ the time, will keep the closed condition of above-mentioned hot-air flow divided valve (202);
Above-mentioned the 1st step is to carry out when above the t1 time in the driven compressor time;
After above-mentioned the 2nd step; When exceeding T2 ℃ or compressor, the temperature of compressor suction calandria discharges the temperature of comb when exceeding T3 ℃; With closing the above-mentioned hot-air flow divided valve (202) that is in opening, thereby prevent that hot gas from supplying to the step in the oil conservator (190).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2005100140192A CN1888658B (en) | 2005-06-27 | 2005-06-27 | Control method for preventing air conditioner liquid refrigerant from inflowing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2005100140192A CN1888658B (en) | 2005-06-27 | 2005-06-27 | Control method for preventing air conditioner liquid refrigerant from inflowing |
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| CN1888658A CN1888658A (en) | 2007-01-03 |
| CN1888658B true CN1888658B (en) | 2012-05-02 |
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| CN2005100140192A Expired - Fee Related CN1888658B (en) | 2005-06-27 | 2005-06-27 | Control method for preventing air conditioner liquid refrigerant from inflowing |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0597597A2 (en) * | 1992-10-15 | 1994-05-18 | Mitsubishi Denki Kabushiki Kaisha | Air conditioner |
| CN1159546A (en) * | 1995-05-10 | 1997-09-17 | 三洋电机株式会社 | Air conditioner |
-
2005
- 2005-06-27 CN CN2005100140192A patent/CN1888658B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0597597A2 (en) * | 1992-10-15 | 1994-05-18 | Mitsubishi Denki Kabushiki Kaisha | Air conditioner |
| CN1159546A (en) * | 1995-05-10 | 1997-09-17 | 三洋电机株式会社 | Air conditioner |
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| CN1888658A (en) | 2007-01-03 |
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