Air conditioner with defrost function

专利摘要:
537 196 high temperature part in the cooling cycle, while the outdoor heat exchanger forms a low temperature part in the cooling cycle. The indoor air gets a higher temperature thanks to heat exchange with the indoor heat exchanger and is passed into the room, whereby indoor heating is carried out. During this time, the indoor heat exchanger performs heat exchange with indoor air; as a result, the temperature of the indoor heat exchanger decreases, while the outdoor heat exchanger performs heat exchange with outdoor air whose temperature is to be increased by granulating the outdoor heat. During cooling, due to switching of the four-way valve, the effluent of refrigerant flows from the compressor in a direction opposite to the direction during heating. In other words, the refrigerant flows through the outdoor heat exchanger, the expansion valve, the indoor heat exchanger and returns to the compressor. On this juice, the outdoor heat exchanger forms the high temperature part of the cooling cycle, while the indoor heat exchanger forms the low temperature part of the cooling cycle. The indoor air has a lower temperature thanks to heat exchange with the indoor heat exchanger and is passed into the room, whereby cooling is carried out indoors. During this time, the indoor heat exchanger performs heat exchange with indoor air; as a result of this' is the temperature of the indoor heat exchanger, while the outdoor heat exchanger performs heat exchange with outdoor air whose temperature is to be lowered by cooling the outdoor surface. If frost has formed in the outdoor heat exchanger during heating, defrosting is also performed. During defrosting, the indoor surface and the outdoor surface are stopped, and the refrigerant flows in the same direction as the direction during cooling thanks to the switching of the four-day valve. In this way, the outdoor heat exchanger forms a high temperature part of the cooling cycle, and consequently it is possible to defrost the outdoor heat exchanger. Summary of the invention
公开号:SE537196C2
申请号:SE1350427
申请日:2011-09-02
公开日:2015-03-03
发明作者:Itaru Nagata；Kazuhisa Mishiro；Ryota Onishi
申请人:Sharp Kk；
IPC主号:

专利说明:

537 196 high temperature part in the cooling cycle, while the outdoor heat exchanger forms a low temperature part in the cooling cycle. The indoor air gets a higher temperature thanks to heat exchange with the indoor heat exchanger and is passed into the room, whereby indoor heating is carried out. During this time, the indoor heat exchanger performs heat exchange with indoor air; as a result, the temperature of the indoor heat exchanger decreases, while the outdoor heat exchanger performs heat exchange with outdoor air whose temperature is to be increased by granulating the outdoor heat.
During cooling, due to switching of the four-way valve, the effluent of refrigerant flows from the compressor in a direction opposite to the direction during heating. In other words, the refrigerant flows through the outdoor heat exchanger, the expansion valve, the indoor heat exchanger and returns to the compressor. On this juice, the outdoor heat exchanger forms the high temperature part of the cooling cycle, while the indoor heat exchanger forms the low temperature part of the cooling cycle. The indoor air has a lower temperature thanks to heat exchange with the indoor heat exchanger and is passed into the room, whereby cooling is carried out indoors. During this time, the indoor heat exchanger performs heat exchange with indoor air; as a result of this' is the temperature of the indoor heat exchanger, while the outdoor heat exchanger performs heat exchange with outdoor air whose temperature is to be lowered by cooling the outdoor surface.
If frost has formed in the outdoor heat exchanger during heating, defrosting is also performed. During defrosting, the indoor surface and the outdoor surface are stopped, and the refrigerant flows in the same direction as the direction during cooling thanks to the switching of the four-day valve. In this way, the outdoor heat exchanger forms a high temperature part of the cooling cycle, and consequently it is possible to defrost the outdoor heat exchanger.
Summary of the invention 2 537 196 Technical problem However, if the outdoor temperature drops to an extremely low temperature, in cold areas, for example, in a place where the outdoor heat exchanger is installed, a high-temperature outflowing refrigerant is deprived during defrosting from the compressor of outdoor heat. the air with the above-mentioned conventional climate apparatus, thereby preventing a rise in temperature of the outdoor heat exchanger. Particularly in a situation where a strong wind blows outdoors and the outdoor surface is caused to rotate by the strong wind, this prevents a rise in temperature of the outdoor heat exchanger.
Even if the defrosting is carried out for a predetermined time, the temperature of the outdoor heat exchanger does not rise to a desired temperature due to this, and consequently inadequate defrosting occurs, with frost remaining. Due to this, defrosting is performed repeatedly for a short time and the inadequate defrosting is repeated, and consequently there is a problem that indoor heating is not performed and the convenience provided by the air conditioner is compromised. Due to the lack of defrosting, the frost that remains on the outdoor heat exchanger and the outdoor appliance part is increased due to ice, which leads to a malfunction of the outdoor appliance part, which also undermines the problem of the reliability of the air conditioner.
An object of the invention is to provide a climate apparatus which is capable of reducing inadequate defrosting and improving comfort and reliability.
Troubleshooting To achieve the above objectives, the present invention comprises, in accordance with the features: a compressor which drives a cooling cycle; an outdoor heat exchanger that is beldgen outdoors; an indoor heat exchanger which is the indoor beldgen; an outdoor fan that tiff & 3 537 196 outdoor heat exchanger outdoor air; and an indoor heat supply to the indoor heat exchanger indoor air, wherein the indoor heat and the outdoor heat cross and a refrigerant are caused by the compressor to flow in one direction through the indoor heat exchanger and the outdoor heat exchanger so that heating thereby takes place; in a case where there is frost in the outdoor heat exchanger, the indoor surface and the outdoor surface are stopped, and the refrigerant is caused to flow in a direction opposite to that of heating so that defrosting thereby takes place; and in a case of inadequate defrosting due to the defrosting, the outdoor surface and the indoor surface are stopped and the refrigerant is caused to flow in the same direction as during heating, so that a defrost preparation is thereby carried out for a predetermined time, after which the defrosting is resumed.
According to this structure, during heating the indoor surface and the outdoor surface cross, the effluent of refrigerant from the compressor flows in a sequence from the indoor heat exchanger to the outdoor heat exchanger and returns to the compressor. In this way, the indoor heat exchanger forms a high temperature part in the cooling cycle, while the outdoor heat exchanger forms a low temperature part in the cooling cycle. The indoor air gets a higher temperature thanks to heat exchange with the indoor heat exchanger and is passed into the room, whereby indoor heating is carried out.
If there is frost in the outdoor heat exchanger, defrost is performed. During defrosting, the indoor and outdoor flats are stopped, the outflow of refrigerant from the compressor flows in turn from the outdoor heat exchanger to the indoor heat exchanger and returns to the compressor. In this way, the outdoor heat exchanger forms a high temperature part in the cooling cycle, while the indoor heat exchanger forms a low temperature part in the cooling cycle, whereby the temperature of the outdoor heat exchanger is' Aar. If defrosting is carried out for a predetermined time and the temperature of the outdoor heat exchanger is raised to a desired temperature, 4,537,196 the defrosting is terminated and switching to heating takes place.
If defrosting is carried out during the predetermined time and the temperature of the outdoor heat exchanger is not raised sufficiently so that inadequate defrosting is obtained as a result, a defrosting preparation is performed. During defrost preparation, the outdoor surface and the indoor surface are stopped, and the outflow of refrigerant from the compressor flows in turn from the indoor heat exchanger to the outdoor heat exchanger and returns to the compressor in the same way as when heating. In this way, the temperature of the refrigerant flowing in the cooling cycle rises, and defrosting is resumed, whereby the refrigerant with increased temperature flows through the defrost preparation in the cooling cycle and the outdoor heat exchanger is defrosted. In the climate apparatus with the structure above, the invention is further marked by the fact that heating takes place for a predetermined time before the defrost preparation. According to this structure, if the defrost ends with inadequate defrosting, defrost preparation is carried out after heating has taken place for a predetermined time. In this way, it is possible to prevent a decrease in indoor temperature. In the air conditioner with the structure above, the invention is further characterized by the fact that, in a case where a predetermined time elapses after the defrost preparation has begun, or in a case where the temperature of the indoor heat exchanger rises above a predetermined temperature during the defrost preparation time, defrosting resumes. In the air conditioner with the structure above, the invention is further characterized by the fact that, in a case where the temperature of the outdoor heat exchanger does not rise above a predetermined temperature even if a predetermined time elapses after the defrost preparation is started, or in a case where the temperature of the refrigerant effluent drops below a compressor temperature during defrosting, defrosting is determined as deficient. Advantageous effects of the invention According to the invention, during the time of inadequate defrosting, the refrigerant is caused to flow in the same direction as during heating; outdoor roof cross; defrost preparation is carried out for a predetermined time, during which the indoor flow is stopped, after which the defrost is resumed, and consequently the refrigerant whose temperature is brought through the defrost preparation to flow and the defrost is resumed. In this way, the defective defrost is reduced upon resumption of the defrost, and it is possible to switch to heating as soon as possible, to perform indoor heating and prevent malfunction of the outdoor appliance part. Consequently, it is possible to improve the reliability of the climate apparatus and the convenience it provides.
Brief Description of the Drawings Figure 1 is a circuit diagram showing a cooling cycle for a climate apparatus according to an embodiment of the invention.
Figure 2 is a flow chart showing operation under heating for a climate apparatus according to an embodiment of the invention.
Description of embodiments In the following, an embodiment of the invention is described with reference to the drawings. Fig. 1 is a circuit diagram showing a cooling cycle for a climate apparatus according to an embodiment. The air conditioner 1 has an indoor apparatus part 10 beldgen indoors and an outdoor apparatus part 20 beldgen outdoors. In the air conditioner 1, a compressor 21 is beldgen in the outdoor appliance part 20, which compressor causes a refrigerant to flow in a refrigerant line 2 and drives the cooling cycle.
The outdoor apparatus part 20 includes: a four-way valve 22 connected to the compressor 21; an outdoor heat exchanger 23; an expansion valve 24; and an outdoor fan 25. The indoor appliance part 10 includes: an indoor heat exchanger 13; and an indoor fan 15. The compressor 21 is connected to one end of the outdoor heat exchanger 23 and one end of the indoor heat exchanger 13 via the four-way valve 22 through the refrigerant line 2. The other spirits of the outdoor heat exchanger 23 and the indoor heat exchanger 13 are connected to each other via the expansion medium line 2.
The outdoor surface 25 is the bellows opposite the outdoor heat exchanger 23. By grinding the outdoor surface 25, outdoor air is supplied to the outdoor heat exchanger 23, whereby heat exchange between the outdoor heat exchanger 23 and the outdoor air is effected. The air which provides the heat exchange with the outdoor heat exchanger 23 is discharged outdoors via an air outlet (not shown) which is accustomed to the outdoor surface 25 and opens out from the outdoor appliance part 20.
The indoor flange 15 and the indoor heat exchanger 13 are covered in an air flow wave (not shown) formed in the indoor apparatus part 10. By cornering the indoor flange 15, indoor air flows into the air flow trough to then be supplied to the indoor heat exchanger 13, whereby heat exchange is carried out in the air. the indoor heat exchanger 13. The air which provides the heat exchange with the indoor heat exchanger 13 is carried further into the room via an air outlet opening (not shown) which opens out from the indoor appliance part 10.
The outdoor heat exchanger 23 is equipped with an outdoor heat exchanger temperature sensor 26 which senses the temperature of the outdoor heat exchanger 23. Furthermore, at the outlet sand of the compressor 21, the refrigerant line 2 is provided with an effluent temperature sensor 27 which senses the temperature of the effluent of refrigerant. The indoor heat exchanger 13 is equipped with an indoor heat exchanger temperature sensor 16 which senses the temperature of the indoor heat exchanger 13.
During heating, the indoor surface 15 and the outdoor surface 25 and the four-way valve 22 are connected as shown by the solid lines in the figure. When the compressor 21 arrives, the refrigerant flows in this direction in the direction indicated by the arrow A, and the refrigerant, which is compressed by the compressor 21 so that it has a high temperature and high pressure, radiates heat into the indoor heat exchanger 13 and condenses.
The high temperature refrigerant is caused to expand by the expansion valve 24 so that it reaches a low temperature and applied pressure, and is passed on to the outdoor heat exchanger 23. The refrigerant flowing into the outdoor heat exchanger 23 absorbs heat and evaporates so that it passes into a gaseous low temperature refrigerant and is passed on to the compressor 21. On this salt the refrigerant is circulated and the cooling cycle is performed. The air which performs the heat exchange with the indoor heat exchanger 13 which forms the high temperature part of the cooling cycle is carried out into the room by the indoor surface 15, whereby heating takes place indoors. The air which performs the heat exchange with the outdoor heat exchanger 23 which forms the layer temperature part of the cooling cycle is released outdoors by means of the outdoor space 25.
During cooling, the indoor float 15 and the outdoor float 25 and the four-way valve 22 are connected as shown by the broken lines in the figure. When the compressor 21 is winding, the refrigerant flows on this sieve in a direction opposite to the direction indicated by the arrow A, whereby the indoor heat exchanger 13 constitutes the low temperature part in the cooling cycle, while the outdoor heat exchanger 23 constitutes the high temperature part in the cooling cycle. The air which provides the heat exchange with the indoor heat exchanger 13 is carried further into the space by the indoor surface 15, whereby indoor cooling is provided. Furthermore, the air which performs the heat exchange with the outdoor heat exchanger 23, which forms the high temperature part of the cooling cycle, is discharged outdoors by means of the outdoor surface 25. Fig. 2 537 196 Fig. 2 is a flow chart showing in detail the operation of the air conditioner 1 during heating. If an instruction to start heating is issued in step s1, the indoor surface 15, the outdoor surface 25 and the compressor 21 are said to be heated. On this set, coolant flows in the direction according to arrow A. In step s12 it is determined based on the detection of the outdoor heat exchanger temperature sensor 26 whether the outdoor heat exchanger 23 has a temperature lower than a predetermined temperature due to frost or not.
In a case where the outdoor heat exchanger 23 does not have a temperature lower than the predetermined temperature, return to step s11 takes place, and steps s11 and s12 are repeated. If the outdoor heat exchanger 23 has a temperature lower than the predetermined temperature, a defrost is performed in one step s13.
During defrosting, the indoor surface 15 and the outdoor surface 25 are stopped, and the four-way valve 22 is connected as shown by the broken lines in Fig. 1. On this sieve, the refrigerant flows in a direction opposite to the direction indicated by arrow A, whereby the outdoor heat exchanger 23 forms the high temperature part. the cooling cycle whose temperature is to be increased. During this time, heat exchange between the outdoor heat exchanger 23 and the outdoor air is prevented due to the fact that the outdoor space 25 is stopped, whereby it is possible to effectively increase the temperature of the outdoor heat exchanger 23. Thanks to the fact that the indoor surface 15 is stopped, it is also possible to prevent air with a low temperature from escaping into the room.
In step s14, based on the sensing of the outdoor heat exchanger temperature sensor 26, it is determined whether the temperature of the outdoor heat exchanger 23 has risen to a temperature higher than the predetermined temperature or not. In a case where the temperature of the outdoor heat exchanger 23 has not risen to a temperature higher than the predetermined temperature, the process proceeds to step s15. In step s15, it is determined whether a predetermined time has elapsed after the defrost has started or not. If the predetermined time has elapsed after the defrost has started, the defrost is determined to be defective, and the process proceeds to step s17. If the predetermined time has not elapsed after defrosting has begun, the process proceeds to step s16. In step s16, it is determined based on the scanning of the effluent temperature sensor 27 whether the temperature for the effluent of refrigerant has decreased below a predetermined temperature (20 ° C in the present embodiment) or not. If the temperature of the refrigerant effluent has decreased to below the predetermined temperature, the defrost is determined to be deficient and the process proceeds to step s17. If the temperature of the refrigerant effluent has not decreased to below the predetermined temperature, step s14 returns, and steps s14 to s16 are repeated. And in step s14, in a case where the temperature of the outdoor heat exchanger 23 has risen to a temperature higher than the predetermined temperature, the defrosting is completed, and return takes place back to step s1, and steps s1 to s14 are repeated.
If the defrost is determined to be defective in step s15 and step s16, the defrost is terminated and heating is performed in step s17. In step s18, the process waits until the heating started in step s17 is carried out for a predetermined time (6 minutes according to the present embodiment). During inadequate defrosting, the temperature of the outdoor heat exchanger 23 is prevented from rising due to the low temperature of the outdoor air, whereby the temperature of the refrigerant flowing in the cooling cycle decreases. Due to this, it is possible to increase the temperature of the refrigerant flowing in the cooling cycle by heating. By performing the heating for a predetermined time after the defrost, it is also possible to prevent a decrease in the indoor temperature.
If the heating is carried out during the predetermined time, the process proceeds to step s19, and a defrost preparation is carried out. During the defrost preparation, the indoor flux 15 is stopped from the heating layer. More specifically, the four-way valve 22 as shown by the solid lines in Fig. 1 is connected, the compressor 21 and the outdoor surface 25 are crossed, and the indoor surface 15 is stopped. In this way, the charging medium flows in the same direction (the direction according to arrow A) as in heating, and the temperature of the refrigerant fluids continuously. During this time, by stopping the indoor flange 15, it is possible to prevent heat exchange between the indoor air and the indoor heat exchanger 13, the viii saga high temperature part of the cooling cycle, and to increase the temperature of the refrigerant to a temperature above the temperature during heating.
In step s20, it is determined whether a predetermined time (3 minutes in the present embodiment) has elapsed after the defrost preparation has been started or not. In a case where the predetermined time has not elapsed after the defrost preparation has begun, the process proceeds to step s21. In step s21, based on the sensing of the indoor heat exchanger temperature sensor 16, it is determined whether the temperature of the indoor heat exchanger 13 is equal to a temperature higher than a predetermined temperature (56 ° C or higher in the present embodiment) or not. If the temperature of the indoor heat exchanger 13 has not risen to a temperature higher than the predetermined temperature, steps s20 and s21 are repeatedly performed.
If in step s20 it is determined that a predetermined time has elapsed after the defrost preparation has begun, or if in step s21 it is determined that the temperature of the indoor heat exchanger 13 has risen to a temperature higher than the predetermined temperature, return to step s13 takes place, and defrosting is resumed. Then the refrigerant flows, the temperature of which rises through the heating in step s17 and through the defrost preparation in step s19, so that defrosting is carried out again. Consequently, it is possible to reliably remove frost on the outdoor heat exchanger 23 by resuming defrosting and to reduce inadequate defrosting.
In addition, an installation of the temperature of the indoor heat exchanger 13, which is used to determine the end point of the defrost preparation in step s21, at 56 ° C, meant that the pressure, when R410A is used as refrigerant, becomes corresponding to 3.5 MPa absolute pressure. Considering a lag in time from sensing the temperature increase in the indoor heat exchanger 13 to switching to defrosting and detecting faults of the indoor heat exchanger temperature sensor 16, thanks to this the pressure is a safe pressure which is within the specification range.
It is also possible to use the outflow temperature from the compressor 21 as a criterion for determining the temperature rise of the indoor heat exchanger 13. However, it is very difficult to predict the pressure based on the outflow temperature, and the pressure is likely to exceed the specification range. Accordingly, in the present embodiment, the temperature sensed by the indoor heat exchanger temperature sensor 16 is used.
In accordance with the present embodiment, in the event of inadequate defrosting, the refrigerant is caused to flow in the same direction (the direction according to arrow A) as in heating and the outdoor space 25 crosses so that defrosting preparation is performed for the predetermined time with the indoor space 15 stopped, after which the defrosting is resumed. , whose temperature 'Rat through the defrost preparation, to current said that the defrost resumes. In this way the inadequate defrosting is reduced at the time of the resumption of the defrosting, and it is possible to switch to heating as soon as possible so that heating takes place indoors and so that malfunction of the outdoor appliance part 20 due to frost growth is prevented. 1 reliability and the convenience it provides.
Heating also takes place for a predetermined time in step s17 before the defrost preparation, and it is possible to prevent a decrease in indoor temperature. Meanwhile, steps s17 and s18 can be omitted for immediate defrost preparation at the time of inadequate defrosting. On this salt it is possible to increase the temperature of the refrigerant more rapidly and to resume defrosting more quickly.
The process proceeds to step s13 in a case (step s20) where the predetermined time has elapsed after the defrost preparation has begun, and it is further possible to carry out the defrost preparation until the temperature of the refrigerant has risen sufficiently, and then the defrost resumes.
The process also proceeds to step s13 in a case (step s21) where the temperature of the indoor heat exchanger 13 is equal to a temperature higher than the predetermined temperature of the defrost preparation, and then it is possible to quickly resume the defrost.
In one case (step s15) when the temperature of the outdoor heat exchanger 23 has not risen to a temperature higher than the predetermined temperature even when the predetermined time has elapsed after the defrost has started, or in one case (step s16) when the temperature of the effluent of refrigerant from the compressor 21 during the defrost decreases to a temperature below the predetermined temperature, the defrost is determined as defective, and it is consequently possible to easily determine defective defrost and end the defrost.
Industrial Applicability The present invention is applicable to air conditioners for heating and defrosting.
List of male display numbers 1 air conditioner 2 refrigerant line 10 indoor unit part 13 indoor heat exchanger 13 537 196 indoor unit 16 indoor heat exchanger temperature sensor outdoor unit part 21 compressor 22 four-way valve 23 outdoor heat exchanger 24 expansion valve outdoor unit 26 outdoor heat exchanger

权利要求:
Claims (4)
[1]
An air conditioning apparatus (1) comprising: a compressor (21) which drives a cooling cycle; an outdoor heat exchanger (23) which is an outdoor beldgen; an indoor heat exchanger (13) which is an indoor beldgen; an outdoor fan (25) which supplies outdoor air to the outdoor heat exchanger (23); and an indoor fan (15) supplying the indoor heat exchanger (13) with indoor air, the indoor surface (15) and the outdoor surface (25) being crossed and a refrigerant being caused by the compressor (21) to flow in one direction through the indoor heat exchanger (13) and the outdoor heat exchanger (23). A. that heating thereby takes place; in a case where there is frost in the outdoor heat exchanger (23), the indoor heat (15) and the outdoor heat (25) are stopped, and the refrigerant is caused to flow in a direction opposite to that of heating so that defrosting is thereby carried out; and in a case of inadequate defrosting due to the defrost, the outdoor surface (25) is crossed, the indoor surface (15) is stopped, and the refrigerant is caused to flow in the same direction as during heating so that a defrost preparation is thereby carried out for a predetermined period, after which the defrost is repeated. that in a case where the temperature of the effluent of refrigerant from the compressor (21) drops below a predetermined temperature during the defrost, the defrost is determined as
[2]
A climate apparatus according to claim 1, wherein heating is performed for a predetermined period of time 537 196 before the defrost preparation.
[3]
Climate device according to claim 1 or claim 2, wherein the defrost preparation is resumed in case where a first predetermined period of time has passed after the defrost preparation has started, or in case where the temperature of the indoor heat exchanger rises above a predetermined temperature during defrost preparation.
[4]
Climate device according to claim 1 or claim 2, wherein the defrosting is determined to be deficient even in cases where the temperature of the outdoor heat exchanger does not rise above a predetermined temperature even when a second predetermined period of time has elapsed after the defrosting has started. 16 537 196

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引用文献:

---

公开号 | 申请日 | 公开日 | 申请人 | 专利标题

---

---

JPH076668B2|1989-12-28|1995-01-30|ダイキン工業株式会社|Fan control device for heat storage type air conditioner|

---

JPH0413037A|1990-04-27|1992-01-17|Fujitsu General Ltd|Controlling method for air conditioner|

---

JP2776978B2|1990-11-28|1998-07-16|株式会社日立製作所|Air conditioner|

---

US5257506A|1991-03-22|1993-11-02|Carrier Corporation|Defrost control|

---

JPH0712438A|1993-06-23|1995-01-17|Mitsubishi Heavy Ind Ltd|Defrosting method in heat pump type air conditioner|

---

JPH07120121A|1993-10-29|1995-05-12|Daikin Ind Ltd|Drive controller for air conditioner|

---

KR100210079B1|1996-10-26|1999-07-15|윤종용|Airconditioner indoor device single operating device|

---

JP3888403B2|1997-12-18|2007-03-07|株式会社富士通ゼネラル|Method and apparatus for controlling air conditioner|

---

US5927083A|1998-03-09|1999-07-27|Carrier Corporation|Compressor cycle dependent defrost control|

---

JP4236371B2|2000-09-04|2009-03-11|三洋電機株式会社|Control device for refrigeration equipment|

---

US6318095B1|2000-10-06|2001-11-20|Carrier Corporation|Method and system for demand defrost control on reversible heat pumps|

---

JP4132812B2|2001-12-25|2008-08-13|株式会社鷺宮製作所|Air conditioner control device|

---

KR100484802B1|2002-07-03|2005-04-22|엘지전자 주식회사|Frost removing method of air conditioner hanving two compressor|

---

AU2003284696A1|2002-11-26|2004-06-18|Daikin Industries, Ltd.|Heat exchanger for air and freezer device|

---

JP4986443B2|2005-12-06|2012-07-25|シャープ株式会社|Air conditioner|

---

JP5363492B2|2008-09-16|2013-12-11|パナソニック株式会社|Air conditioner|

---

JP2010085047A|2008-10-01|2010-04-15|Sharp Corp|Air conditioner|

---

JP2010181036A|2009-02-03|2010-08-19|Panasonic Corp|Air conditioner|JP5897994B2|2012-06-06|2016-04-06|シャープ株式会社|Air conditioner|

---

JP6137461B2|2013-03-29|2017-05-31|株式会社富士通ゼネラル|Air conditioner|

---

JP6137462B2|2013-03-29|2017-05-31|株式会社富士通ゼネラル|Air conditioner|

---

CN104456859B|2013-09-12|2017-09-26|珠海格力电器股份有限公司|Air conditioner and its defrosting control method and device|

---

JP6367642B2|2014-07-31|2018-08-01|シャープ株式会社|Air conditioner|

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CN106794009A|2014-10-07|2017-05-31|蝴蝶网络有限公司|Ultrasonic signal processing circuit and relevant device and method|

---

JP2016161256A|2015-03-04|2016-09-05|株式会社富士通ゼネラル|Air conditioner|

---

CA2995799A1|2017-02-17|2018-08-17|National Coil Company|Reverse cycle defrost refrigeration system and method|

---

CN107166673B|2017-06-19|2019-12-27|广东美的暖通设备有限公司|Control method and control system for outdoor fan of air conditioner|

---

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法律状态:

优先权:

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申请号 | 申请日 | 专利标题

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JP2010226099A|JP5053430B2|2010-10-05|2010-10-05|Air conditioner|

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PCT/JP2011/070014|WO2012046528A1|2010-10-05|2011-09-02|Air conditioner|

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