CN100439824C - Air conditioner device - Google Patents
Air conditioner device Download PDFInfo
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- CN100439824C CN100439824C CNB2006101148849A CN200610114884A CN100439824C CN 100439824 C CN100439824 C CN 100439824C CN B2006101148849 A CNB2006101148849 A CN B2006101148849A CN 200610114884 A CN200610114884 A CN 200610114884A CN 100439824 C CN100439824 C CN 100439824C
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- heat exchanger
- way valve
- bypass circuit
- defrosting
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- 238000010257 thawing Methods 0.000 claims abstract description 99
- 239000003507 refrigerant Substances 0.000 claims abstract description 77
- 238000005057 refrigeration Methods 0.000 claims description 27
- 239000003638 chemical reducing agent Substances 0.000 claims description 24
- 238000004378 air conditioning Methods 0.000 claims description 19
- 238000001514 detection method Methods 0.000 claims description 16
- 238000010438 heat treatment Methods 0.000 abstract description 33
- 238000010586 diagram Methods 0.000 description 7
- 230000005494 condensation Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000010725 compressor oil Substances 0.000 description 1
- 238000005338 heat storage Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
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Abstract
This invention provides an air-conditioner that continues a heating operation while performing a defrosting operation. A first bypass circuit 6 is provided for connecting the portion of a heat-pump-type refrigerating cycle between an indoor heat exchanger 3 and a decompressor 4 to the suction side of a compressor 1. The first bypass valve 6 is provided with a two-way valve 7 and a refrigerant heater 8. Further, a second bypass circuit 9 is provided for connecting the portion between a four-way valve 2 and the indoor heat exchanger 3 to the portion between the decompressor 4 and an outdoor heat exchanger 5. The second bypass circuit 9 is provided with a defrosting two-way valve 10. To defrost the outdoor heat exchanger 5, the decompressor 4 and the defrosting two-way valve 10 are closed according to outside air temperature and a fan 19 is rotated to perform a first defrosting operation. When the temperature detected by the temperature means of the outdoor heat exchanger is less than a predetermined value while the first defrosting operation is within a preset period of time, the two-way valve of the second bypass circuit is opened and an outdoor fan is stopped to perform a second defrosting operation.
Description
Technical Field
The present invention relates to an air-conditioning apparatus capable of performing a defrosting operation for removing frost adhering to an outdoor heat exchanger while continuing heating during a heating operation by a heat pump operation.
Background
Conventionally, a defrosting system of such a heat pump type air conditioner generally employs a defrosting system in which a four-way valve is switched and a refrigerant in a refrigeration cycle is caused to flow in a reverse direction.
That is, the defrosting operation is performed in the same direction as the refrigerant flow direction during cooling, and the high-temperature and high-pressure refrigerant is caused to flow into the outdoor heat exchanger to melt frost adhering to the heat exchanger.
In this defrosting mode, there are basic problems as follows: since the heat exchanger on the indoor side serves as an evaporator during defrosting, the temperature of the room in the room is lowered, and a cold feeling is felt.
As a countermeasure against this basic problem, an invention has been proposed in which the defrosting operation is performed while heating is continued.
Fig. 8 is a configuration diagram of a refrigeration cycle of a conventional air-conditioning apparatus.
As shown in the drawings, the following invention is disclosed, which is constituted by: a heat pump refrigeration cycle configured by connecting a compressor, a four-way valve, an indoor heat exchanger, an expansion mechanism, and an outdoor heat exchanger by a refrigerant circuit, comprising: a refrigerant heating circuit which is connected between the expansion mechanism and the outdoor heat exchanger and between the suction sides of the compressors in the refrigeration cycle and which has a refrigerant heater; and a defrosting circuit that is connected between a discharge side of a compressor in the refrigeration cycle and between the outdoor heat exchanger and the four-way valve, wherein, during defrosting of the outdoor heat exchanger in a heat pump operation of the refrigeration cycle, the refrigerant heated by the refrigerant heater passes through the compressor and then is branched into a flow passing through the indoor heat exchanger and a flow passing through the outdoor heat exchanger from the defrosting circuit, and the branched refrigerant flows are merged at an inlet of the refrigerant heating circuit and heated again by the refrigerant heater.
As described in the problems cited in the above invention, when the defrosting operation of the outdoor unit is performed during the heat pump operation, the defrosting operation can be performed while continuing the heating operation under a limited condition (for example, see patent document 1).
[ patent document 1 ] Japanese patent application laid-open No. Hei 11-182994
However, the following problem occurs in this refrigeration cycle system.
In this refrigeration cycle configuration, when the defrosting operation is performed, the two-way valve 109a is opened, and the refrigerant discharged from the compressor 101 flows between the outdoor heat exchanger 103 and the four-way valve 102, and therefore the two-way valve 106 is required so that the defrosted hot gas refrigerant does not flow to the compressor suction side.
The two-way valve 106 is connected to the suction side of the compressor 101, and the two-way valve 106 having a large diameter is used to reduce the pressure loss during the cooling and heating operation, which is an expensive two-way valve.
Further, since the two-way valve 108 is opened from the heat pump operation and the refrigerant heating operation is switched to the refrigerant heating operation, and the refrigerant flow in the outdoor heat exchanger 103 is reversed so as to perform the defrosting operation, the two-way valve 107 needs to be temporarily closed before the defrosting operation is performed, and the two-way valve 107 needs to be operated at the inlet of the outdoor heat exchanger 103.
Therefore, this refrigeration cycle requires four two-way valves, which is a complicated and expensive method.
Further, since the refrigerant used for defrosting and the refrigerant having dissipated heat in the indoor heat exchanger 110 are merged, if the refrigerant pressure at the merging point is higher than the pressure of the refrigerant used for defrosting, the refrigerant flows to the outdoor heat exchanger, and if the refrigerant pressure is on the contrary, the refrigerant flows to the indoor side, and thus the defrosting operation cannot be performed while heating is performed.
Further, since the refrigerant used for defrosting and the refrigerant radiated in the indoor heat exchanger 110 are merged, refrigerant noise (refrigerant sound) is likely to be generated, and a refrigerant merging device may be necessary to solve the above-described problem of pressure balance and the problem of refrigerant sound.
Further, since the refrigerant circulation amount increases at the merging portion, the pressure loss increases, and therefore, the piping diameter needs to be increased as a countermeasure against this, which also has a structural problem that the heater is increased in size.
Further, when the refrigeration circuit is operated, the temperature of the refrigerant heater 104 is normally lowered by the low-pressure refrigerant in the inside of the piping of the refrigerant heater 104, and therefore dew condensation is likely to occur on the refrigerant heater 104, and even when the refrigerant leaks from the two-way valve 108 due to a failure, dew condensation occurs on the refrigerant heater, and particularly when a heat transfer heat source is used for the refrigerant heater, there is a great problem in the reliability and safety of the refrigerant heater.
Disclosure of Invention
The present invention has been made in view of the above problems of the prior art, and an object of the present invention is to provide an air conditioner in which a refrigeration cycle can be configured by a simple bypass circuit, and a stable defrosting operation can be performed without causing a problem of refrigerant noise and pressure balance while continuing a heating operation.
In order to achieve the above object, an air conditioner according to the present invention is an air conditioner in a heat pump type refrigeration cycle in which a compressor, a four-way valve, an indoor-side heat exchanger, a pressure reducer, and an outdoor-side heat exchanger are connected to a refrigerant circuit, wherein a first bypass circuit is provided that connects between the indoor-side heat exchanger and the pressure reducer and between the four-way valve and the outdoor-side heat exchanger, a two-way valve and a refrigerant heater are provided in the first bypass circuit, a second bypass circuit is provided that connects between the four-way valve and the indoor-side heat exchanger and between the pressure reducer and the outdoor-side heat exchanger, a two-way valve is provided in the second bypass circuit, an outdoor temperature detecting means and a temperature detecting means of the outdoor-side heat exchanger are provided, and an indoor-side fan, a pressure reducer, and an outdoor, And an outdoor fan that exchanges heat between the outdoor heat exchanger and outdoor air, wherein when defrosting of the outdoor heat exchanger is performed, if the outdoor air temperature detected by the outdoor temperature detection means is equal to or higher than a predetermined value, the pressure reducer of the refrigeration cycle and the two-way valve of the second bypass circuit are closed during the entire defrosting operation period, and the outdoor fan is rotated to perform a first defrosting operation. When the temperature detected by the temperature detection means of the outdoor heat exchanger is lower than a predetermined value within a time preset for the first defrosting operation, the two-way valve of the second bypass circuit is opened, and the outdoor fan is stopped to perform a second defrosting operation.
The invention provides an air conditioner capable of defrosting while continuing heating operation.
The first invention provides an air conditioner, in a heat pump type refrigeration cycle in which a refrigerant circuit is connected with a compressor, a four-way valve, an indoor heat exchanger, a pressure reducer, and an outdoor heat exchanger, a first bypass circuit is provided which is connected between the indoor heat exchanger and the pressure reducer and between the four-way valve and the outdoor heat exchanger, the first bypass circuit is provided with a two-way valve and a refrigerant heater, a second bypass circuit is further provided which is connected between the four-way valve and the indoor heat exchanger and between the pressure reducer and the outdoor heat exchanger, the second bypass circuit is provided with a two-way valve, and is provided with an outdoor temperature detection mechanism and a temperature detection mechanism of the outdoor heat exchanger, and is provided with an indoor fan, a pressure reducer, and an outdoor heat exchanger which perform heat exchange between the indoor heat exchanger and indoor air, And an outdoor fan that exchanges heat between the outdoor heat exchanger and outdoor air, wherein when defrosting of the outdoor heat exchanger is performed, if the outdoor air temperature detected by the outdoor temperature detection means is equal to or higher than a predetermined value, the pressure reducer of the refrigeration cycle and the two-way valve of the second bypass circuit are closed during the entire defrosting operation period, and the outdoor fan is rotated to perform a first defrosting operation. When the temperature detected by the temperature detection means of the outdoor heat exchanger is lower than a predetermined value within a time preset for the first defrosting operation, the two-way valve of the second bypass circuit is opened, and the outdoor fan is stopped to perform the second defrosting operation.
With this configuration, since the indoor heating cycle and the outdoor defrosting cycle are independent of each other, the refrigerant does not flow into the outdoor heat exchanger, and the defrosting can be performed by the heat of the air outside the room, the defrosting operation can be performed while the heating operation is performed.
Further, since the defrosting operation is performed while the heating is continued, refrigerant noise is not generated when the four-way valve is switched.
Further, since the four-way valve is not switched during defrosting, pressure fluctuation is small, oil fluctuation of the compressor is also small, and highly reliable operation of the compressor can be realized.
Further, since the defrosting circuit is performed outdoors even when the length of the connection pipe is increased, the compressor oil level during defrosting operation does not decrease due to the length of the pipe, and highly reliable operation of the compressor can be achieved even under long pipe conditions.
In the air conditioning apparatus according to the second aspect of the present invention, particularly when the outdoor air temperature is low in the first aspect of the present invention, the defrosting operation can be performed by stopping the outdoor fan and opening the two-way valve of the second bypass circuit to allow the hot gas refrigerant to flow to the outdoor heat exchanger.
In the air-conditioning apparatus according to the third aspect of the invention, particularly, by configuring such a configuration that the two-way valve of at least the second bypass circuit is closed during the entire period of the first defrosting operation period of the first aspect of the invention, the heating cycle on the indoor side and the defrosting cycle on the outdoor side are independent from each other, and the refrigerant does not flow into the heat exchanger on the outdoor side, and defrosting can be performed by heat of the air on the outdoor side.
In the air-conditioning apparatus according to the fourth aspect of the invention, particularly, by configuring such a configuration that the two-way valve of the second bypass circuit is closed at least during one or both of the initial period and the final period in the first defrosting operation period of the first aspect of the invention, a part of the hot gas refrigerant can be supplied to the defrosting cycle on the outdoor side, frost adhering to the outdoor side heat exchanger can be easily peeled off or dissolved, and defrosting can be performed in a short time by the heat of the air on the outdoor side. In addition, since the hot gas refrigerant can be supplied to the outdoor heat exchanger at the end of the defrosting period, defrosting can be reliably completed.
In the air-conditioning apparatus according to the fifth aspect of the invention, in particular, the pressure reducer according to any one of the first to fourth aspects of the invention is an electromagnetic expansion valve, and a connection point of one end of each of the first bypass circuit and the second bypass circuit to the refrigeration cycle is provided in front of and behind the expansion valve.
In the air-conditioning apparatus according to the sixth aspect of the invention, particularly, the pressure reducer according to the first to fourth aspects of the invention is a two-way valve, one end of each of the first bypass circuit and the second bypass circuit is provided in front of and behind the two-way valve at a connection point to the refrigeration cycle, and the two-way valve is closed during the first and second defrosting operations.
In the air-conditioning apparatus according to the seventh aspect of the invention, particularly, the decompressor is connected to the second bypass circuit according to any one of the first to fourth aspects of the invention, and the refrigerant flow can be adjusted, and by configuring this configuration, the amount of heat used for defrosting can be adjusted according to the amount of frost, the amount of heat used in the first and second defrosting operations can be suppressed to the minimum, and the maximum capacity can be exhibited in heating of the indoor side.
In the air-conditioning apparatus according to the eighth aspect of the invention, particularly, by providing a decompressor between the refrigerant heater according to any one of the first to fourth aspects of the invention and the indoor heat exchanger and operating the refrigerant heater as an evaporator, the heat absorption efficiency of the refrigerant can be improved, and an efficient heat pump refrigeration cycle can be formed.
Drawings
Fig. 1 is a structural view of an air conditioner according to an embodiment of the present invention;
fig. 2 is a structural view of an air conditioner according to an embodiment of the present invention;
fig. 3 is a structural view of an air conditioning apparatus according to an embodiment of the present invention;
FIG. 4 is a control block diagram of the claimed invention;
fig. 5 is a time chart showing the case where the first and second defrosting operations are performed at an outdoor air temperature of 1 ℃ or higher in embodiment 1 of the present invention;
fig. 6 is a time chart of the case where only the first defrosting operation in which the outdoor air temperature is 1 ℃ or higher is performed in embodiment 1 of the present invention;
fig. 7 is a time chart of a case where the defrosting operation is performed at an outdoor air temperature of less than 1 ℃ in embodiment 1 of the present invention;
fig. 8 is a configuration diagram of a conventional air conditioner.
In the figure, 1-compressor; 2-a four-way valve; 3-indoor heat exchanger; 4-a pressure reducer; 5-outdoor heat exchanger; 6-a first bypass loop; 7-a two-way valve for heating the refrigerant; 8-a heater; 9-a second bypass circuit; 10-a two-way valve for defrosting; 11-a pressure reducer for defrosting; 12-refrigerant heating pressure reducer; 13-a heater heat source; 14-refrigerant passing tube portion; 15-heat accumulation part; 16-a one-way valve; 17-indoor blower; 18-an indoor unit; 19-outdoor blower; 20-outdoor side temperature detecting part; 21-outdoor side heat exchanger temperature detector; 22-outdoor unit.
Detailed Description
Hereinafter, embodiments of the present invention will be described with reference to the drawings. The present invention is not limited to the embodiment.
(embodiment mode 1)
Fig. 1 is a configuration diagram of an air conditioning apparatus according to a first embodiment of the present invention. In the figure, the outdoor unit 22 includes: the refrigeration system includes a compressor 1, a four-way valve 2, a decompressor 4, an outdoor heat exchanger 5, a first bypass circuit 6, a refrigerant heating two-way valve 7, a refrigerant heater 8, a second bypass circuit 9, a defrosting two-way valve 10 of the second bypass circuit, a decompressor 11 of the second bypass circuit, a two-way valve 7 of the first bypass circuit, a decompressor 12 of the first bypass circuit, a refrigerant heating heat source 13, a refrigerant passage tube portion 14, a heat storage portion 15, an outdoor blower 19, an outdoor temperature detection portion 20, and an outdoor heat exchanger temperature detection portion 21.
The indoor unit 18 is provided with an indoor heat exchanger 3 and an indoor fan 17. The pressure reducer 4 here may be an electromagnetic expansion valve.
Fig. 2 is a diagram obtained by replacing the decompressor 4 in fig. 1 with a two-way valve 4 a.
Fig. 3 is a diagram obtained by replacing the defrosting two-way valve 10 and the decompressor 11 of the second bypass circuit 9 in fig. 1 with the decompressor 22 and moving the decompressor 12 of the first bypass circuit 6 to the main circuit.
Next, fig. 4 is a control block diagram of the present invention, and fig. 5 to 7 are timing charts showing behavior in the same control operation.
In fig. 4, the defrosting start determination means 50 determines the start of defrosting on the outdoor unit side, and when it is determined that defrosting is started, the compressor operation means 51, the refrigerant heating two-way valve opening/closing means 52, the defrosting two-way valve opening/closing means 53, the expansion valve opening degree variable means 54, the outdoor fan operation means 55, the four-way valve switching means 56, and the heater heat source operation stop means perform the defrosting operation by performing the operations shown in fig. 5 to 7.
At this time, in the indoor unit 18, the defrosting start signal is received from the outdoor unit 22 by the defrosting start signal receiving means 58, and the indoor fan 17 is controlled by the indoor fan operating means 59 in accordance with the determination of the defrosting operation.
Here, the outdoor air temperature is detected by the outdoor temperature detection means 60, and when the outdoor air temperature is equal to or higher than a predetermined temperature (for example, 1 ℃), the decompressor 4 and the defrosting two-way valve 10 are closed, the indoor and outdoor refrigeration cycles are made independent of each other, the outdoor fan is rotated, heat exchange between the outdoor air and the outdoor heat exchanger 5 is performed, and the first defrosting operation is performed by the heat of the outdoor air.
Specifically, as shown in fig. 5, when the outdoor air temperature is equal to or higher than a predetermined temperature (for example, 1 ℃), if the first defrosting operation is determined, the heating operation by the heat pump in step 1 is shifted to the heating operation by the refrigerant heating operation in step 2. At this time, the two-way valve for heating the refrigerant is turned on, and the two-way valve is controlled in the turning-on direction.
At this time, the defrosting two-way valve 10 is still closed, and the heater heat source 8 is turned on to perform the refrigerant heating operation. At this time, the expansion valve 4 is in a closed or nearly closed state.
In addition, the outdoor fan continues to operate.
The four-way valve 2 is not switched during defrosting in the state of the heating circuit in order to continue heating.
In addition, the inner fan does not stop because the heating is continued.
Next, in step 3, the two-way valve for defrosting 10 remains closed, and the expansion valve 4 is in a closed or nearly closed state. The compressor 1 is operated at a predetermined operating frequency.
Next, in step 4, when the temperature detected by the temperature detection means 60 of the outdoor heat exchanger is lower than a predetermined temperature (for example, 5 ℃), the operation of the outdoor fan is stopped, the two-way valve for defrosting 10 is opened, and the second defrosting operation for supplying the hot gas refrigerant to the outdoor heat exchanger 5 is continued.
When the temperature of the outdoor heat exchanger is equal to or higher than the predetermined temperature, the second defrosting operation in step 4 is skipped and the process proceeds to step 5 (see fig. 6).
Next, in step 5, the defrosting is finished and the operation returns to the operation before defrosting, and the normal heat pump heating operation is resumed.
When the outdoor air temperature is detected by the outdoor temperature detecting means 60 and becomes lower than a predetermined temperature (for example, 1 ℃), as shown in fig. 7, the decompressor 4 is closed, the refrigeration cycles of the indoor side and the outdoor side are made independent of each other, the outdoor side fan is stopped, the two-way valve for defrosting 10 is opened, and the second defrosting operation of step 4 of supplying the hot gas refrigerant to the outdoor heat exchanger 5 is performed.
The heat source unit of the refrigerant heater may be of any shape or form as long as it is a heat generating body.
In the present embodiment, one end of the connection portion of the first bypass circuit is provided between the four-way valve and the outdoor heat exchanger, but it may be provided between the four-way valve and the suction side of the compressor.
In this case, since the pressure loss of the refrigerant circulating from the refrigerant heater to the compressor is reduced, it is expected to improve the efficiency.
(availability in industry)
As described above, the air-conditioning apparatus according to the present invention can perform the defrosting operation while performing the heating operation, and therefore, can be applied to an air-conditioning apparatus in a cold region where the outdoor temperature is very low.
Claims (7)
1. An air conditioner, in a heat pump type refrigeration cycle in which a refrigerant circuit is connected to a compressor, a four-way valve, an indoor heat exchanger, a pressure reducer, and an outdoor heat exchanger, wherein a first bypass circuit is provided between the indoor heat exchanger and the pressure reducer and between the four-way valve and the outdoor heat exchanger, the first bypass circuit is provided with a two-way valve and a refrigerant heater, and further provided with a second bypass circuit connected between the four-way valve and the indoor heat exchanger and between the pressure reducer and the outdoor heat exchanger, the second bypass circuit is provided with a two-way valve, and is provided with an outdoor temperature detection mechanism and a temperature detection mechanism of the outdoor heat exchanger, and is provided with an indoor fan for performing heat exchange between the indoor heat exchanger and the indoor air, and an outdoor fan for performing heat exchange between the outdoor heat exchanger and the outdoor air, wherein,
when defrosting of the outdoor heat exchanger is performed, the outdoor fan is rotated to perform a first defrosting operation by closing the decompressor of the refrigeration cycle and the two-way valve of the second bypass circuit for the entire period of the defrosting operation period when the outdoor air temperature detected by the outdoor temperature detecting means is equal to or higher than a predetermined value, and when the temperature detected by the temperature detecting means of the outdoor heat exchanger is lower than the predetermined value for a time set in advance for the first defrosting operation, the two-way valve of the second bypass circuit is opened and the outdoor fan is stopped to perform a second defrosting operation.
2. An air conditioner, in a heat pump type refrigeration cycle in which a refrigerant circuit is connected to a compressor, a four-way valve, an indoor heat exchanger, a pressure reducer, and an outdoor heat exchanger, wherein a first bypass circuit is provided between the indoor heat exchanger and the pressure reducer and between the four-way valve and the outdoor heat exchanger, the first bypass circuit is provided with a two-way valve and a refrigerant heater, and further provided with a second bypass circuit connected between the four-way valve and the indoor heat exchanger and between the pressure reducer and the outdoor heat exchanger, the second bypass circuit is provided with a two-way valve, and is provided with an outdoor temperature detection mechanism and a temperature detection mechanism of the outdoor heat exchanger, and is provided with an indoor fan for performing heat exchange between the indoor heat exchanger and the indoor air, and an outdoor fan for performing heat exchange between the outdoor heat exchanger and the outdoor air, wherein,
when defrosting of the outdoor heat exchanger is performed, the decompressor of the refrigeration cycle is closed for the entire period of the defrosting operation period when the outdoor air temperature detected by the outdoor temperature detection means is equal to or higher than a predetermined value, the two-way valve of the second bypass circuit is closed for a predetermined period of either or both of the initial period and the final period of the defrosting operation period, the outdoor fan is rotated to perform a first defrosting operation, and the two-way valve of the second bypass circuit is opened and the outdoor fan is stopped to perform a second defrosting operation when the temperature detected by the outdoor temperature detection means during a predetermined period of the first defrosting operation is lower than the predetermined value.
3. The air conditioning device according to claim 1,
when the outdoor air temperature is lower than a predetermined value, the second defrosting operation is performed.
4. The air conditioning device according to claim 1 or 2,
the pressure reducer is an electromagnetic expansion valve, and the connection point of one end of each of the first bypass circuit and the second bypass circuit to the refrigeration cycle is provided in front of and behind the expansion valve, and the expansion valve is closed during the first and second defrosting operations.
5. The air conditioning device according to claim 1 or 2,
the pressure reducer is a two-way valve, and one end of each of the first bypass circuit and the second bypass circuit is provided in front of and behind the two-way valve at a connection portion to the refrigeration cycle, and the two-way valve is closed during the defrosting operation.
6. The air conditioning device according to claim 1 or 2,
a decompressor is connected to the second bypass circuit, and the flow of the refrigerant can be adjusted.
7. The air conditioning device according to claim 1 or 2,
a decompressor is provided between the refrigerant heater and the indoor heat exchanger to operate the refrigerant heater as an evaporator.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005237166 | 2005-08-18 | ||
| JP2005237166A JP2007051825A (en) | 2005-08-18 | 2005-08-18 | Air-conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1916538A CN1916538A (en) | 2007-02-21 |
| CN100439824C true CN100439824C (en) | 2008-12-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006101148849A Expired - Fee Related CN100439824C (en) | 2005-08-18 | 2006-08-16 | Air conditioner device |
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| Country | Link |
|---|---|
| JP (1) | JP2007051825A (en) |
| CN (1) | CN100439824C (en) |
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| JP2008224189A (en) * | 2007-03-15 | 2008-09-25 | Aisin Seiki Co Ltd | Refrigerating cycle device |
| KR101598624B1 (en) | 2008-11-10 | 2016-02-29 | 엘지전자 주식회사 | Air conditioning system |
| JP4666061B2 (en) * | 2008-11-17 | 2011-04-06 | ダイキン工業株式会社 | Air conditioner |
| KR101605901B1 (en) * | 2009-09-11 | 2016-03-23 | 엘지전자 주식회사 | Air conditioner and control method thereof |
| KR101321546B1 (en) * | 2009-11-13 | 2013-10-28 | 엘지전자 주식회사 | Air conditioner |
| JP2011174639A (en) * | 2010-02-24 | 2011-09-08 | Hitachi Appliances Inc | Air conditioner |
| JP2012057869A (en) * | 2010-09-09 | 2012-03-22 | Panasonic Corp | Air conditioner |
| CN102229340B (en) * | 2011-04-25 | 2015-04-29 | 浙江盾安人工环境股份有限公司 | Energy-saving and bypass-unloading-adjustable air-conditioning system for train |
| CN103900190B (en) * | 2012-12-28 | 2018-02-16 | 松下电器产业株式会社 | The control method of air conditioner |
| JP6225548B2 (en) | 2013-08-08 | 2017-11-08 | 株式会社富士通ゼネラル | Air conditioner |
| CN104567075B (en) * | 2013-10-28 | 2017-10-03 | 珠海格力电器股份有限公司 | Air conditioner circulating device and control method thereof |
| CN104633871B (en) * | 2013-11-14 | 2017-07-25 | 珠海格力电器股份有限公司 | Control method of air conditioning system |
| CN104729161B (en) * | 2013-12-19 | 2018-08-24 | 珠海格力电器股份有限公司 | Air conditioner and control method thereof |
| CN105588222A (en) * | 2015-06-16 | 2016-05-18 | 青岛海信日立空调系统有限公司 | Outdoor unit, multi-connected heat pump system and control method thereof |
| JP6403907B2 (en) * | 2015-12-11 | 2018-10-10 | 三菱電機株式会社 | Refrigeration cycle equipment |
| CN108224845B (en) * | 2017-12-21 | 2021-01-08 | 青岛海尔空调电子有限公司 | Heat storage air conditioning system and control method |
| CN111503816B (en) * | 2020-04-29 | 2021-10-26 | 广东美的制冷设备有限公司 | Defrosting sound suppression method, storage medium, suppression device and air conditioner |
| CN112444004B (en) * | 2020-11-30 | 2022-06-03 | 青岛海信日立空调系统有限公司 | Air conditioning device |
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| JPS62173670U (en) * | 1986-04-22 | 1987-11-04 | ||
| JP2522919B2 (en) * | 1986-07-02 | 1996-08-07 | 三洋電機株式会社 | Air conditioner |
| JPS63247573A (en) * | 1987-04-03 | 1988-10-14 | 株式会社東芝 | Air conditioner |
| JPH03286978A (en) * | 1990-04-03 | 1991-12-17 | Mitsubishi Electric Corp | Cooling and heating apparatus |
| JP2002081807A (en) * | 2000-08-31 | 2002-03-22 | Daikin Ind Ltd | Refrigerating device |
-
2005
- 2005-08-18 JP JP2005237166A patent/JP2007051825A/en active Pending
-
2006
- 2006-08-16 CN CNB2006101148849A patent/CN100439824C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1285031A (en) * | 1996-07-22 | 2001-02-21 | Ut－巴泰尔有限公司 | Heat pump having improved defrost system |
| JPH10318635A (en) * | 1997-05-20 | 1998-12-04 | Toshiba Corp | Air conditioner |
| CN1222662A (en) * | 1997-12-18 | 1999-07-14 | 富士通将军股份有限公司 | Air conditioner control method and apparatus of same |
| JP2004293857A (en) * | 2003-03-26 | 2004-10-21 | Matsushita Electric Ind Co Ltd | Heat pump device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1916538A (en) | 2007-02-21 |
| JP2007051825A (en) | 2007-03-01 |
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