CN1888740A - Apparatus for preventing liquid refrigerant from inflowing for air conditioner and controlling method thereof - Google Patents
Apparatus for preventing liquid refrigerant from inflowing for air conditioner and controlling method thereof Download PDFInfo
- Publication number
- CN1888740A CN1888740A CN 200510013983 CN200510013983A CN1888740A CN 1888740 A CN1888740 A CN 1888740A CN 200510013983 CN200510013983 CN 200510013983 CN 200510013983 A CN200510013983 A CN 200510013983A CN 1888740 A CN1888740 A CN 1888740A
- Authority
- CN
- China
- Prior art keywords
- refrigerant
- mentioned
- refrigerants
- heat exchanger
- oil conservator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Transformer Cooling (AREA)
Abstract
This invention is a kind of device of air conditioner that prevents liquid refrigerants from flowing in. it includes: refrigerants supplying pipe, which splits flow between indoor heat exchanger and expanding device. It also supplied refrigerants to oil storage; oil storage, in which is set with refrigerants through-pipe capable of passing high temperature high pressure refrigerants; refrigerants recovery pipe, which is used for recovering the refrigerants passing oil storage to the said expanding device; electronic valve, which is assemble on the refrigerants supplying pipe and controls the flowing condition of refrigerants. This invention makes the low temperature low pressure liquid refrigerants in oil storage and high temperature high pressure refrigerants supplied by indoor heat exchanger carry out heat exchanging. The liquid refrigerants in turned into gaseous state through evaporating.
Description
Technical field
The liquid refrigerants that prevents that the present invention relates to a kind of air-conditioner flows into device and control method thereof.
Background technology
In general, air-conditioner is meant the hot-air in the suction chamber, and after carrying out heat exchange with cold gas, with its be discharged to indoor (promptly, need carry out the space of air conditioning), and carry out cold-room operation (cold-room pattern) by carrying out aforesaid operations repeatedly to indoor, or by inverse operation to the indoor cold/house warming system that carries out greenhouse operation (greenhouse pattern).Above-mentioned air-conditioner has outside common cold/greenhouse function, after also having in the suction chamber contaminated air and filtering, it is become pure and fresh air be discharged to the indoor air purifying function again, and suck malaria and be converted into dry air and be discharged to indoor dehumidification function etc. again.
As shown in Figure 1, 2, have the general air-conditioner of heat pump circulation, it includes: indoor heat exchanger 10, and it is arranged at indoor, and has the function of the interior space being carried out the greenhouse operation; Indoor fan 12, it guides the suction of air for the heat exchange that makes room air and the refrigerant by indoor heat exchanger; Expansion gear 20, it will expand by the refrigerant of indoor heat exchanger 10 condensations, and above-mentioned refrigerant is converted into the low-temp low-pressure state; Outdoor heat exchanger 30, it with the refrigerant of the low-temp low-pressure that flows in the above-mentioned expansion gear 20 by evaporating with the heat exchange of outdoor air; Outdoor fan 32, it guides the suction of outdoor air for the heat exchange that makes outdoor air and the refrigerant by outdoor heat exchanger 30; Four directions valve 40, it is according to flow regime cold, that the greenhouse pattern changes the refrigerant of suction/discharge in the compression unit; Oil conservator 50, it is used for preventing that the refrigerant by above-mentioned outdoor heat exchanger 30 from not flowed in the compression unit by the liquid refrigerants of gasification (that is not evaporation); Compression unit 60, it is connected in the discharge pipe arrangement 54 of above-mentioned oil conservator 50, and the refrigerant that sucks by above-mentioned discharge pipe arrangement 54 is compressed, and is translated into high-temperature high-pressure state.
As shown in Figure 2, oil conservator 50 of the prior art is to be used for separating the device that is not kept the liquid refrigerants of liquid condition by gasification from outdoor heat exchanger 30 evaporation backs by the refrigerant that cubic valve 40 is drawn into compression unit 60.Above-mentioned oil conservator 50 includes: the inflow pipe arrangement 52 that flows into refrigerant from cubic valve 40; Discharge the discharge pipe arrangement 54 of refrigerant to compression unit 60; Space with a certain size, and can hold the container 56 that is not kept the liquid refrigerants A of liquid condition by gasification.
Flowing into the refrigerant of above-mentioned oil conservator 50 from cubic valve 40 by flowing into pipe arrangement 52, by above-mentioned outdoor heat exchanger 30 time, do not kept the liquid refrigerants A of liquid condition will be contained in the bottom of said vesse 56 by gasification; And under the evaporation of above-mentioned outdoor heat exchanger 30, gasify and keep the gaseous coolant of gaseous state, will on physical characteristic, separate, and be contained in the upper end of said vesse 56 with above-mentioned liquid refrigerants A.At this moment, because the upper end of said vesse 56 is provided with the end B that is used for the refrigerant that above-mentioned oil conservator 50 flows into is discharged to the discharge pipe arrangement 54 of compression unit 60, make under the gaseous coolant that is contained in container 56 upper ends relatively and the state that the above-mentioned liquid refrigerants A that is contained in container 56 bottoms separates, will be discharged in the compression unit 60 by above-mentioned discharge pipe arrangement 54.
But at aforesaid oil conservator 50 of the prior art, it is the inflow pipe arrangement 52 that is flowed into by the cooling matchmaker; Discharge pipe arrangement 54 with the refrigerant discharge; The simple structure that is used to hold the container 56 of the liquid refrigerants that separates with gaseous coolant constitutes, and can only separate gaseous coolant from the refrigerant that outdoor heat exchanger 30 flows into, and it is discharged in the compression unit 60 when air-conditioner carry out normal greenhouse operation; But if the off-premises station temperature of air-conditioner is reduced to both below the fixed temperature, cause under the significantly reduced situation of refrigerant evaporation ability of outdoor heat exchanger 30, be not evaporated and keep a large amount of liquid refrigerants of liquid condition will flow in the oil conservator 50, thereby the situation that the spatial accommodation that causes taking place said vesse 56 is overflowed, the above-mentioned liquid refrigerants that overflows will be fed directly in the compressor 60 by the end B that discharges pipe arrangement 54.
Do not gasify and directly be drawn under the situation of compression unit 60 at above-mentioned liquid refrigerants, the compressor that will cause liquid compression to cause such as is damaged at problem.
Summary of the invention
Technical problem underlying to be solved by this invention is, overcome the defective that existing technology exists, and provide a kind of liquid refrigerants that prevents of air-conditioner to flow into device and control method thereof, can prevent that liquid refrigerants from overflowing the container of oil conservator and be drawn in the compression unit, and the liquid refrigerants that flows in the oil conservator can be gasified, thereby prevent that above-mentioned liquid refrigerants from overflowing oil conservator and be drawn in the compression unit.
The liquid refrigerants inflow device that prevents of air-conditioner of the present invention is:
A kind of liquid refrigerants that prevents of air-conditioner flows into device, it is characterized in that, comprises: the refrigerant supply pipe, and shunt its main refrigerant pipe between indoor heat exchanger and expansion gear, and be used for supplying with refrigerant to oil conservator; Oil conservator, its inside are provided with the refrigerant through tube that can pass through the refrigerant of HTHP; The refrigerant recovering pipe, it is used for the refrigerant recovering by above-mentioned oil conservator to above-mentioned expansion gear; Electronics opens and closes valve, and it is installed on above-mentioned refrigerant supply pipe, and is used to control the flow regime of refrigerant.
The liquid refrigerants that prevents of aforesaid air-conditioner flows into device, wherein also includes: the temp, sensor of outdoor unit that is arranged at outdoor heat exchanger; Be arranged at the suction pipe arrangement temperature sensor of the compression unit of compression unit suction pipe arrangement.
The control method that liquid refrigerants flows into that prevents of air-conditioner of the present invention is:
A kind of air-conditioner prevent the control method that liquid refrigerants flows into, it is characterized in that, include following several steps: judge the step whether air-conditioner is operated with the greenhouse pattern; The result who in above-mentioned steps, judges, when air-conditioner is operated with the greenhouse pattern, if to satisfy the off-premises station temperature be below T1 ℃ or off-premises station temperature when to deduct the value that sucks the pipe arrangement temperature be condition more than T2 ℃, open the step that electronics that the refrigerant that is used for the HTHP by indoor heat exchanger supplies to oil conservator opens and closes valve.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is the structure chart with general air-conditioner of heat pump circulation
Fig. 2 is the plane of the oil conservator of prior art
Fig. 3 is that the liquid refrigerants that prevents with heat pump circulation of the present invention overflows the structure chart of the air-conditioner of oil conservator
Fig. 4 is that the liquid refrigerants that prevents of the present invention overflows the plane of oil conservator
Fig. 5 is the simple structure schematic diagram for the air-conditioner among the present invention who prevents inflow liquid refrigerants in the compressor
Fig. 6 is the flow chart for the air-conditioner control method among the present invention who prevents inflow liquid refrigerants in the compressor
The number in the figure explanation:
100: indoor heat exchanger 102: indoor fan
104: main refrigerant pipe 110: electronics opens and closes valve
112: refrigerant supply pipe 114: the refrigerant recovering pipe
120: expansion gear 130: outdoor heat exchanger
132: outdoor fan 134: temp, sensor of outdoor unit
140: cubic valve 150: oil conservator
152: flow into pipe arrangement 154: discharge pipe arrangement
156: container 158: the refrigerant through tube
160: compression unit 200: control part
162: the suction pipe arrangement temperature sensor of compression unit
The specific embodiment
Shown in Fig. 3,4, being provided with among the present invention prevents that liquid refrigerants from overflowing the air-conditioner of oil conservator, and it includes following several sections: indoor heat exchanger 100, and it is arranged at indoor, and has the function of the interior space being carried out the greenhouse operation; Indoor fan 102, it guides the suction of air for the heat exchange that makes room air and the refrigerant by indoor heat exchanger 100; Expansion gear 120, it will expand by the refrigerant of indoor heat exchanger 100 condensations, and above-mentioned refrigerant is converted into the low-temp low-pressure state; Refrigerant supply pipe 112 is shunted its main refrigerant pipe 104 between indoor heat exchanger 100 and expansion gear 120, and is used for supplying with to oil conservator 150 refrigerant of high-temperature high-pressure states; Electronics opens and closes valve 110, and it is installed on above-mentioned refrigerant supply pipe 112, and is used to control the flow regime of refrigerant; Refrigerant recovering pipe 114, it is used for the refrigerant recovering by above-mentioned oil conservator 150 to above-mentioned expansion gear 120; Outdoor heat exchanger 130, it with the refrigerant of the low-temp low-pressure that flows in the above-mentioned expansion gear 120 by evaporating with the heat exchange of outdoor air; Outdoor fan 132, it guides the suction of outdoor air for the heat exchange that makes outdoor air and the refrigerant by outdoor heat exchanger 130; Four directions valve 140, it changes the flow regime of the refrigerant of suction/discharge in the compression unit according to cold/greenhouse pattern; Oil conservator 150, it is used for preventing that the refrigerant by above-mentioned outdoor heat exchanger 130 from not flowed in the compression unit by the liquid refrigerants of gasification (that is not evaporation); Compression unit 160, it is connected in the discharge pipe arrangement 154 of above-mentioned oil conservator 150, and the refrigerant that sucks by above-mentioned discharge pipe arrangement 154 is compressed, and is translated into high-temperature high-pressure state.
Wherein, above-mentioned oil conservator 150 is to be used for separating the device that is not kept the liquid refrigerants of liquid condition by gasification from outdoor heat exchanger 130 evaporation backs by the refrigerant that cubic valve 140 is drawn into compression unit 160.Above-mentioned oil conservator 150 includes: the inflow pipe arrangement 152 that flows into refrigerant from cubic valve 140; Discharge the discharge pipe arrangement 154 of refrigerant to compression unit 160; Space with a certain size, and can hold the container 156 that is not kept the liquid refrigerants A of liquid condition by gasification; Be installed in the inside of said vesse 156, and be used for refrigerant through tube 158 by high temperature refrigerant.Here, it is spiral form that above-mentioned refrigerant through tube 158 is coil (coil), and this is the inside that stays in above-mentioned oil conservator 150 for the refrigerant that makes the high-temperature high-pressure state by oil conservator 150 for more time.One end of above-mentioned refrigerant through tube 158 is connected in above-mentioned refrigerant supply pipe 112, can supply with the refrigerant by the high-temperature high-pressure state of indoor heat exchanger 100; The other end of above-mentioned refrigerant through tube 158 is connected in above-mentioned refrigerant recovering pipe 114, makes refrigerant recovering by above-mentioned oil conservator 150 in expansion gear 120.Wherein, for the refrigerant that makes high-temperature high-pressure state more smoothly by above-mentioned refrigerant through tube 158, as shown in Figure 4, above-mentioned refrigerant supply pipe 112 is compared above-mentioned refrigerant recovering pipe 114 and is positioned at downside and connects.
Therefore, when opening and closing valve 110, above-mentioned electronics is under the opening, the refrigerant of the condition of high temperature by indoor heat exchanger 100 is after supplying to the inside of oil conservator 150 through refrigerant supply pipe 112, then be drawn in the expansion gear 120 by above-mentioned refrigerant recovering pipe 114, make the refrigerant of the condition of high temperature that flows in liquid refrigerants A in the container 156 that is contained in above-mentioned oil conservator 150 and the above-mentioned refrigerant through tube 158 carry out heat exchange, thereby after making above-mentioned liquid refrigerants A be converted into gaseous coolant, will supply in the compression unit 160 by above-mentioned discharge pipe arrangement 154.
When air-conditioner is operated, flow into the refrigerant of oil conservator 150 inside from above-mentioned cubic valve 140 at inflow pipe arrangement 152 by oil conservator 150, do not kept the liquid refrigerants A of liquid condition will be contained in the bottom of said vesse 156 in the outdoor heat exchanger 130 by gasification, and under the evaporation of above-mentioned outdoor heat exchanger 130, gasify and keep the gaseous coolant of gaseous state, to on physical characteristic, separate, and be contained in the upper end of said vesse 156 with above-mentioned liquid refrigerants A.At this moment, because the upper end of said vesse 156 is provided with the end B that is used for the refrigerant that above-mentioned oil conservator 150 flows into is discharged to the discharge pipe arrangement 154 of compression unit 160, the gaseous coolant that is contained in said vesse 156 upper ends will be drawn into by the discharge pipe arrangement 154 of above-mentioned oil conservator 150 in the compression unit 160, and the liquid refrigerants that is contained in said vesse 156 bottoms is not when having other situation, will keep its liquid condition and is contained in the said vesse 156.
In addition, in carrying out the greenhouse operation, when the temperature of off-premises station is reduced to that both fixed temperature was following, the refrigerant evaporation ability of outdoor heat exchanger 130 will significantly reduce, make and be not evaporated and keep a large amount of liquid refrigerants of liquid condition will flow in the oil conservator 150, thereby the situation that the spatial accommodation that causes taking place said vesse 156 is overflowed, the above-mentioned liquid refrigerants that overflows is keeping under its liquid condition, will be fed directly in the compressor 160 by the end B that discharges pipe arrangement 154.As mentioned above, do not gasify and directly be drawn under the situation of compression unit 160 at above-mentioned liquid refrigerants, the compressor that will cause liquid compression to cause such as is damaged at problem.
For the evaporability that prevents outdoor heat exchanger 130 significantly reduces and a large amount of liquid refrigerants that flow in the oil conservator 150 is drawn in the compression unit 160, to make the refrigerant of the condition of high temperature by indoor heat exchanger 100 and the liquid refrigerants in the above-mentioned container 156 that is contained in oil conservator 150 carry out heat exchange among the present invention, thereby above-mentioned liquid refrigerants is gasified by above-mentioned heat exchange.For this reason, be provided with shunting the main refrigerant pipe 104 between indoor heat exchanger 100 and expansion gear 120 among the present invention, and be used for supplying with the refrigerant supply pipe 112 of the refrigerant of high-temperature high-pressure state to oil conservator 150.Simultaneously, the inside of above-mentioned oil conservator 150 is provided with the refrigerant that makes the condition of high temperature of discharging in the indoor heat exchanger 100 and runs through the refrigerant through tube 158 that above-mentioned oil conservator 150 flows.In addition, also be provided with the refrigerant recovering pipe 114 that is used for the above-mentioned refrigerant recovering of passing through refrigerant through tube 158 is arrived expansion gear 120.Wherein, electronics is installed in the above-mentioned refrigerant supply pipe 112 opens and closes valve 110, thereby the refrigerant flow regime that is drawn into the refrigerant through tube 158 of oil conservator 150 from indoor heat exchanger 100 is controlled.
As mentioned above, owing to the off-premises station temperature such as both is reduced to below the fixed temperature at reason, when causing flowing into the situation of a large amount of liquid refrigerants in the oil conservator 150 when remarkable reduction of the evaporability that outdoor heat exchanger takes place, the control part of air-conditioner (not shown) will be opened above-mentioned electronics and open and close valve 110, and the refrigerant of the condition of high temperature by indoor heat exchanger 100 is supplied in the oil conservator 150 by refrigerant supply pipe 112.Thus, in the refrigerant of the condition of high temperature by indoor heat exchanger 100, to there be the refrigerant of part amount to be drawn in the refrigerant through tube 158 of oil conservator 150 by above-mentioned refrigerant supply pipe 112, make the liquid refrigerants and the above-mentioned refrigerant that runs through the condition of high temperature that flows in the refrigerant through tube 158 of oil conservator 150 inside that hold in the container 156 of oil conservator 150 carry out heat exchange, thereby make the above-mentioned liquid refrigerants that is contained in the container 156 be converted into gaseous coolant by evaporation.
Thus, according to aforesaid the present invention, the liquid refrigerants that oil conservator 150 inside can be held and the refrigerant of the condition of high temperature carry out heat exchange, and make it be converted into gaseous coolant, thereby a large amount of liquid refrigerants flow into oil conservator 150 in the solution prior art, and directly are drawn into the problem of compression unit 160 with liquid condition.
Among Fig. 3, unaccounted drawing label has: drawing label " 134 " is a temp, sensor of outdoor unit; Drawing label " 162 " is the suction pipe arrangement temperature sensor of compression unit.
As Fig. 5, shown in Figure 6, flow in the compression unit in order to prevent liquid refrigerants, circuit is connected with in the control part 200 among the present invention: the temp, sensor of outdoor unit 134 that is arranged on the side of outdoor heat exchanger (130 among Fig. 3); Be arranged on the suction pipe arrangement temperature sensor 162 that compression unit (160 among Fig. 3) sucks the compression unit of pipe arrangement.Can control the open/close state that electronics opens and closes valve 110 according to the output signal of the suction pipe arrangement temperature sensor 162 of above-mentioned temp, sensor of outdoor unit 134 and compression unit.
Above-mentioned control part 200 confirms according to the temperature value that detects output in the suction pipe arrangement temperature sensor 162 of above-mentioned temp, sensor of outdoor unit 134 and compression unit whether above-mentioned outdoor heat exchanger (130 among Fig. 3) is in the significantly reduced state of evaporability.Promptly, when the temperature of off-premises station is that " T1 ℃ " is for example for below-10 ℃, or the value that the temperature of off-premises station deducts the suction pipe arrangement temperature of compression unit for example is more than 5 ℃ the time for " T2 ℃ ", above-mentioned control part 200 will be judged as above-mentioned outdoor heat exchanger (130 among Fig. 3) significantly to be reduced owing to external environment condition makes its evaporability, and make and flow into a large amount of liquid refrigerants in the oil conservator (150 among Fig. 3), open and close valve (110 among Fig. 3) and be in unlatching (on) state thereby control above-mentioned electronics, make the refrigerant of the high-temperature high-pressure state by above-mentioned indoor heat exchanger (100 among Fig. 3) supply to the refrigerant through tube (158 among Fig. 3) that runs through above-mentioned oil conservator 150 inside.Thus, the liquid refrigerants of a large amount of low-temp low-pressure states that flow in the above-mentioned oil conservator (150 among Fig. 3) will carry out heat exchange with the refrigerant of the middle high-temperature high-pressure state of supplying with of indoor heat exchanger (100 among Fig. 3), make above-mentioned liquid refrigerants be converted into gaseous coolant by evaporation, above-mentioned gaseous coolant then supplies in the compression unit (160 among Fig. 3) by the discharge pipe arrangement (154 among Fig. 3) of above-mentioned oil conservator (150 among Fig. 3).
Below with reference to Fig. 6 the control method that liquid refrigerants flows into that prevents among the present invention is described.
At first, confirm whether air-conditioner is in greenhouse mode of operation (S100 step), this is because the system that prevents the liquid refrigerants inflow among the present invention is applicable to the situation when air-conditioner carries out the greenhouse operation, therefore, when not operating with the greenhouse pattern, air-conditioner will no longer carry out next step.
The result who confirms in above-mentioned S100 step when air-conditioner is operated with the greenhouse pattern, then, judges whether the temperature value of temp, sensor of outdoor unit 134 outputs is below T1 ℃, for example judges whether to be (S110 step) below-10 ℃.The result who in above-mentioned S110 step, judges, when the off-premises station temperature is below-10 ℃ the time, mean that outdoor temperature is in the extremely state of low temperature, be used in from expansion gear (120 Fig. 3) and flow into the refrigerant of low-temp low-pressure state of outdoor heat exchanger (130 among Fig. 3) and evaporability that outdoor air carries out the outdoor heat exchanger (130 among Fig. 3) of heat exchange and evaporation significantly reduces, thus, the liquid refrigerants that is not evaporated in the above-mentioned outdoor heat exchanger (130 among Fig. 3) is incited somebody to action residual in a large number and is flow in the oil conservator 150.
Therefore, when in above-mentioned S110 step, judging the off-premises station temperature and be below T1 ℃, to control above-mentioned electronics switching valve (110 among Fig. 3) and be in unlatching (on) state (S120 step), the refrigerant of the high-temperature high-pressure state by above-mentioned indoor heat exchanger (100 among Fig. 3) is flow in the oil conservator (150 among Fig. 3) by refrigerant supply pipe (112 among Fig. 3), thereby make the refrigerant of the high-temperature high-pressure state that the liquid refrigerants that flow into a large amount of low-temp low-pressure states in the oil conservator (150 among Fig. 3) and above-mentioned indoor heat exchanger (100 among Fig. 3) supply with carry out heat exchange.
In addition, when in above-mentioned S110 step, judging the off-premises station temperature and be not below T1 ℃, judge then whether the value that the off-premises station temperature deducts the suction pipe arrangement temperature of compression unit is more than T2 ℃, for example judges whether to be (S130 step) more than 5 ℃.Even outdoor temperature is not in the extremely state of low temperature, when the temperature of the suction pipe arrangement of above-mentioned compression unit is compared under the very low state of off-premises station temperature, because it is former thereby may make and flow into liquid refrigerants in the compression unit (160 among Fig. 3) to cross greenhouse etc.Therefore, in order to prevent to suck liquid refrigerants in the above-mentioned situation lower compression portion (160 among Fig. 3) and carry out liquid compression, the present invention judges off-premises station temperature and compression unit in above-mentioned S130 step suction pipe arrangement temperature difference is more than T2 ℃ the time, to make above-mentioned electronics open and close valve (110 among Fig. 3) and be in unlatching (on) state, the refrigerant of the high-temperature high-pressure state by above-mentioned indoor heat exchanger (100 among Fig. 3) is flow in the oil conservator (150 among Fig. 3) by refrigerant supply pipe (112 among Fig. 3), thereby make the refrigerant of the high-temperature high-pressure state that the liquid refrigerants that flow into a large amount of low-temp low-pressure states in the oil conservator (150 among Fig. 3) and above-mentioned indoor heat exchanger (100 among Fig. 3) supply with carry out heat exchange, and prevent that above-mentioned liquid refrigerants directly is drawn in the above-mentioned compression unit (160 among Fig. 3).
Then, in above-mentioned S130 step, do not reach more than T2 ℃ when judging the value that the off-premises station temperature deducts the suction pipe arrangement temperature of compression unit, for example be judged as when not reaching more than 5 ℃, will make above-mentioned electronics open and close valve (110 among Fig. 3) and keep closing (off) state (S140 step).Thus, the refrigerant of the high-temperature high-pressure state by above-mentioned indoor heat exchanger (100 among Fig. 3) will not supply to above-mentioned oil conservator (150 among Fig. 3), and all flow in the expansion gear (120 among Fig. 3).
The effect of invention
The liquid refrigerants that prevents of the air-conditioner among the present invention flows into device and control method thereof, be provided with the spiral refrigerant through tube that is used for by the high-temperature high-pressure state refrigerant in the inside of oil conservator, and the electronics that is provided for controlling the flow regime of high-temperature high-pressure state refrigerant wherein in above-mentioned refrigerant through tube opens and closes valve, make when opening (on) above-mentioned electronics and open and close valve, the refrigerant of the high-temperature high-pressure state by indoor heat exchanger will carry out heat exchange with the liquid refrigerants that flow into oil conservator and be contained in the low-temp low-pressure state of above-mentioned oil conservator inside.
Thus, can carry out heat exchange with being contained in the liquid refrigerants of the low-temp low-pressure state in the oil conservator and the refrigerant of the high-temperature high-pressure state that indoor heat exchanger is supplied with, by evaporation above-mentioned liquid refrigerants is converted into gaseous state, directly is drawn into the problem that compression unit carries out liquid compression with liquid condition thereby can solve the liquid refrigerants that flow in the oil conservator that state owing to off-premises station etc. causes.
Claims (3)
1, a kind of liquid refrigerants that prevents of air-conditioner flows into device, it is characterized in that, comprises:
Refrigerant supply pipe (112), shunting its main refrigerant pipe (104) between indoor heat exchanger (100) and expansion gear (120), and be used for supplying with refrigerant to oil conservator (150);
Oil conservator (150), its inside are provided with the refrigerant through tube (158) that can pass through the refrigerant of HTHP;
Refrigerant recovering pipe (114), it is used for the refrigerant recovering by above-mentioned oil conservator (150) is arrived above-mentioned expansion gear (120);
Electronics opens and closes valve (110), and it is installed on above-mentioned refrigerant supply pipe (112), and is used to control the flow regime of refrigerant.
2, the liquid refrigerants that prevents of air-conditioner according to claim 1 flows into device, it is characterized in that, also includes:
Be arranged at the temp, sensor of outdoor unit (134) of outdoor heat exchanger (130);
Be arranged at the suction pipe arrangement temperature sensor (162) of the compression unit of compression unit suction pipe arrangement.
3, a kind of control method that prevents the liquid refrigerants inflow of air-conditioner is characterized in that, includes following several steps:
Judge the step whether air-conditioner is operated with the greenhouse pattern;
The result who in above-mentioned steps, judges, when air-conditioner is operated with the greenhouse pattern, if to satisfy the off-premises station temperature be below T1 ℃ or off-premises station temperature when to deduct the value that sucks the pipe arrangement temperature be condition more than T2 ℃, open (on) and be used for the step that electronics that refrigerant with the HTHP by indoor heat exchanger supplies to oil conservator opens and closes valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510013983 CN1888740A (en) | 2005-06-27 | 2005-06-27 | Apparatus for preventing liquid refrigerant from inflowing for air conditioner and controlling method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510013983 CN1888740A (en) | 2005-06-27 | 2005-06-27 | Apparatus for preventing liquid refrigerant from inflowing for air conditioner and controlling method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1888740A true CN1888740A (en) | 2007-01-03 |
Family
ID=37578029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510013983 Pending CN1888740A (en) | 2005-06-27 | 2005-06-27 | Apparatus for preventing liquid refrigerant from inflowing for air conditioner and controlling method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1888740A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102818406A (en) * | 2012-08-21 | 2012-12-12 | 广东美的电器股份有限公司 | Refrigerant recovery device and method of heat pump of air-conditioner and outdoor unit of air-conditioner |
-
2005
- 2005-06-27 CN CN 200510013983 patent/CN1888740A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102818406A (en) * | 2012-08-21 | 2012-12-12 | 广东美的电器股份有限公司 | Refrigerant recovery device and method of heat pump of air-conditioner and outdoor unit of air-conditioner |
| CN102818406B (en) * | 2012-08-21 | 2015-04-22 | 美的集团股份有限公司 | Refrigerant recovery device and method of heat pump of air-conditioner and outdoor unit of air-conditioner |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7357002B2 (en) | Method for installing refrigeration device, and refrigeration device | |
| CN1224809C (en) | Air-conditioner and method for running it in cooling mode | |
| US6863711B2 (en) | Temperature swing humidity collector using powerplant waste heat | |
| WO2009157325A1 (en) | Refrigerating cycle apparatus, and air-conditioning apparatus | |
| US20060101845A1 (en) | Compressor oil recovering apparatus and multi-unit air conditioner equiped with the same | |
| JP3680278B2 (en) | Refrigeration equipment construction method and refrigeration equipment | |
| CN1789841A (en) | Multi-unit air conditioner and method for controlling the same | |
| CN1796883A (en) | Multi-type air conditioner for simultaneous heating and cooling use and method for withdrawing refrigerant therefrom | |
| CN1550734A (en) | Refrigeration cycle apparatus | |
| CN1793744A (en) | Air conditioner | |
| CN1786624A (en) | Air conditioner | |
| CN1789866A (en) | Air conditioner | |
| CN1624399A (en) | Refrigeration cycle apparatus | |
| CN1888740A (en) | Apparatus for preventing liquid refrigerant from inflowing for air conditioner and controlling method thereof | |
| CN1793758A (en) | Air conditioner | |
| CN1278905A (en) | Refrigerant recovering apparatus and refrigerant recovering method | |
| CN1948868A (en) | Air conditioner and its control method for the pressure equilibrium | |
| JP2007139347A (en) | Refrigerating unit and its construction method | |
| CN1235008C (en) | Combined regeneration heating and cooling system | |
| CN1661304A (en) | Modularized refrigerating unit with flooding type vaporization system | |
| CN112337272A (en) | Adsorption separation device | |
| CN1683838A (en) | Air conditioner | |
| CN1888668A (en) | Air conditioner for improving performance when overloading and controlling method thereof | |
| JP2007139346A (en) | Refrigeration unit and its constructing method | |
| KR100398123B1 (en) | Oil-separator for air-conditioning system of automobile |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |