AU2017395110B2 - Air conditioning system - Google Patents
Air conditioning system Download PDFInfo
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- AU2017395110B2 AU2017395110B2 AU2017395110A AU2017395110A AU2017395110B2 AU 2017395110 B2 AU2017395110 B2 AU 2017395110B2 AU 2017395110 A AU2017395110 A AU 2017395110A AU 2017395110 A AU2017395110 A AU 2017395110A AU 2017395110 B2 AU2017395110 B2 AU 2017395110B2
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- Australia
- Prior art keywords
- flow rate
- conditioning system
- air conditioning
- heat exchanger
- control unit
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
- F24F5/001—Compression cycle type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/41—Defrosting; Preventing freezing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B1/00—Compression machines, plants or systems with non-reversible cycle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B13/00—Compression machines, plants or systems, with reversible cycle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Air Conditioning Control Device (AREA)
Abstract
Provided is an air-conditioning system that is useful in suppressing condensation on cooling piping forming a section of refrigerant piping. This air-conditioning system includes a compressor, an outdoor heat exchanger, an outdoor flow rate adjustment device, a container, and an indoor heat exchanger, which are connected sequentially by means of refrigerant piping. The refrigerant piping between the container and the indoor heat exchanger includes cooling piping. The air-conditioning system further includes container pressure-increasing piping provided with a flow rate control member, and a control unit that controls the operation of the air-conditioning system. One end of the container pressure-increasing piping is connected between the compressor and the outdoor heat exchanger, and the other end is connected between the container and the outdoor flow rate adjustment device. When the control unit determines that a cooling piping condensation condition has been fulfilled, wherein condensation occurs on the cooling piping, the control unit increases the degree of opening of the flow rate control member.
Description
The present invention relates to an air conditioning system, and particularly to an air conditioning system that cools electric components using a cooling pipe.
BACKGROUND ART
A conventional air conditioning system includes a compressor, an outdoor heat exchanger, an outdoor flow rate regulator, a vessel, and an indoor heat exchanger that are connected in order by a refrigerant pipe. In this air conditioning system, the refrigerant pipe between the vessel and the indoor heat exchanger includes a cooling pipe having an inlet end 0 and an outlet end, and the cooling pipe is in contact with electric components via a metal plate.
Such an air conditioning system exchanges heat with air or the like in the outdoor heat exchanger, and then cools the electric components using low-temperature refrigerant flowing through the cooling pipe. This can simplify the structure of the air conditioning system and reduce the manufacturing cost, as compared with a case where a fan is provided, for example, 5 in order to cool the electric components.
In the above-described air conditioning system, however, the temperature of the refrigerant flowing into the cooling pipe from the inlet end may become lower than the dewpoint temperature of air, which may lead to condensation on the cooling pipe (especially on the inlet end side). In such a case, if condensation water drips on, for example, the electric Ό components of the air conditioning system, a problem such as short-circuiting may occur, which is not ideal.
Any discussion of documents, acts, materials, devices, articles or the like which has been included in the present specification is not to be taken as an admission that any or all of these matters form part of the prior art base or were common general knowledge in the field 25 relevant to the present disclosure as it existed before the priority date of each of the appended claims.
Throughout this specification the word comprise, or variations such as comprises or comprising, will be understood to imply the inclusion of a stated element, integer or step, or group of elements, integers or steps, but not the exclusion of any other element, integer or 30 step, or group of elements, integers or steps.
SUMMARY
An air conditioning system according to a first aspect of the present disclosure includes a compressor, an outdoor heat exchanger, an outdoor flow rate regulator, a vessel, and an indoor heat exchanger that are connected in order by a refrigerant pipe. The refrigerant
2017395110 21 Aug 2019 pipe between the vessel and the indoor heat exchanger includes a cooling pipe. The air conditioning system further includes a vessel pressure-increasing pipe and a control unit. The vessel pressure-increasing pipe is provided with a flow rate control member. One end of the vessel pressure-increasing pipe is connected between the compressor and the outdoor heat 5 exchanger, while the other end of the vessel pressure-increasing pipe is connected between the vessel and the outdoor flow rate regulator. The control unit controls the operation of the air conditioning system. When the control unit determines that a cooling pipe condensation condition, which is required for occurrence of condensation on the cooling pipe, is satisfied, the control unit increases the opening degree of the flow rate control member.
According to the air conditioning system according to the first aspect, when the control unit determines that the cooling pipe condensation condition is satisfied, the control unit increases the opening degree of the flow rate control member. As a result, according to an embodiment, the pressure of saturated liquid refrigerant whose degree of subcooling at the outlet of the vessel is 0°C increases, whereby the temperature (for example, the outlet temperature) of the cooling pipe increases. This makes it easy to suppress condensation on the cooling pipe. As a result, problems such as condensation water dripping on, for example, the electric components constituting the air conditioning system and causing short-circuiting, are less likely to occur.
An air conditioning system according to a second aspect of the present disclosure is Ό the air conditioning system according to the first aspect, wherein, when the control unit determines that the cooling pipe condensation condition is satisfied, the control unit maximizes the opening degree of the flow rate control member and then decreases an opening degree of the outdoor flow rate regulator such that an outlet temperature of the cooling pipe reaches or exceeds an environmental temperature.
According to an air conditioning system according to an embodiment, the time of controlling the opening degree of the flow rate control member is shifted from the time of controlling the opening degree of the outdoor flow rate regulator, and thus the control can be simplified.
An air conditioning system according to a third aspect of the present disclosure is the air conditioning system according to the first aspect, wherein, when the control unit determines that the cooling pipe condensation condition is satisfied, the control unit increases the opening degree of the flow rate control member, and simultaneously decreases an opening degree of the outdoor flow rate regulator such that an outlet temperature of the cooling pipe reaches or exceeds an environmental temperature.
2017395110 21 Aug 2019
According to an air conditioning system according to an embodiment, the outlet temperature of the cooling pipe can reach or exceed the environmental temperature relatively quickly.
An air conditioning system according to a fourth aspect of the present disclosure is the air conditioning system according to the first aspect, wherein the refrigerant pipe between the compressor and the outdoor heat exchanger is provided with a switching device that switches the air conditioning system between a cooling operation and a heating operation, and one end of the vessel pressure-increasing pipe is connected between the compressor and the switching device.
An air conditioning system according to an embodiment can be switched between the cooling operation and the heating operation as necessary.
An air conditioning system according to a fifth aspect of the present disclosure is the air conditioning system according to any one of the first to fourth aspects, wherein the flow rate control member is a motor-operated valve or an electromagnetic valve.
According to an air conditioning system according to an embodiment, it is possible to easily configure the flow rate control member.
An air conditioning system according to a sixth aspect of the present disclosure is the air conditioning system according to any one of the first to fourth aspects, wherein the outdoor heat exchanger is a water heat exchanger.
According to an air conditioning system according to an embodiment, it is possible to easily configure the outdoor heat exchanger.
An air conditioning system according to a seventh aspect of the present disclosure is the air conditioning system according to any one of the first to fourth aspects, wherein, when the outlet temperature of the cooling pipe is lower than the environmental temperature during 25 the cooling operation, the control unit determines that the cooling pipe condensation condition is satisfied.
An air conditioning system according to an eighth aspect of the present disclosure includes a compressor, an outdoor heat exchanger, an outdoor flow rate regulator, and an indoor heat exchanger that are connected in order by a refrigerant pipe. The refrigerant pipe between 30 the outdoor flow rate regulator and the indoor heat exchanger includes a cooling pipe. The air conditioning system further includes a pressure-increasing pipe and a control unit. The pressure-increasing pipe is provided with a flow rate control member. One end of the pressure-increasing pipe is connected between the compressor and the outdoor heat exchanger, while the other end of the pressure-increasing pipe is connected between the cooling pipe and
2017395110 21 Aug 2019 the outdoor flow rate regulator. The control unit controls the operation of the air conditioning system. When the control unit determines that a cooling pipe condensation condition, which is required for occurrence of condensation on the cooling pipe, is satisfied, the control unit increases the opening degree of the flow rate control member.
According to the air conditioning system according to the eighth aspect, when the control unit determines that the cooling pipe condensation condition is satisfied, the control unit increases the opening degree of the flow rate control member. As a result, according to an embodiment, the pressure of saturated liquid refrigerant whose degree of subcooling at the inlet of the cooling pipe is 0°C increases, whereby the temperature (for example, the outlet 0 temperature) of the cooling pipe increases. This makes it easy to suppress condensation on the cooling pipe. As a result, problems such as condensation water dripping on, for example, the electric components constituting the air conditioning system and causing short-circuiting, are less likely to occur.
An air conditioning system according to a ninth aspect of the present disclosure is the air conditioning system according to the eighth aspect, wherein, when the control unit determines that the cooling pipe condensation condition is satisfied, the control unit maximizes the opening degree of the flow rate control member and then decreases an opening degree of the outdoor flow rate regulator such that an outlet temperature of the cooling pipe reaches or exceeds an environmental temperature.
Ό According to an air conditioning system according to an embodiment, the time of controlling the opening degree of the flow rate control member is shifted from the time of controlling the opening degree of the outdoor flow rate regulator, and thus the control can be simplified.
According to an air conditioning system disclosed herein, when the control unit 25 determines that the cooling pipe condensation condition is satisfied, the control unit increases the opening degree of the flow rate control member. As a result, according to an embodiment, the pressure of saturated liquid refrigerant whose degree of subcooling at the outlet of the vessel is 0°C increases, whereby the temperature (outlet temperature) of the cooling pipe increases. This makes it easy to suppress condensation on the cooling pipe. As a result, problems such 30 as condensation water dripping on, for example, the electric components constituting the air conditioning system and causing short-circuiting, are less likely to occur.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a schematic diagram illustrating a circuit structure of an air conditioning system according to a first embodiment of the present invention.
FIG. 2 is a schematic diagram illustrating a circuit structure of an air conditioning system according to a second embodiment of the present invention.
DESCRIPTION OF EMBODIMENTS
Air conditioning systems according to embodiments of the present invention will be described below with reference to the drawings.
<First Embodiment
An air conditioning system according to a first embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic diagram illustrating a circuit structure of the air conditioning system according to the first embodiment of the present invention.
As illustrated in FIG. 1, the air conditioning system includes a compressor 10, an outdoor heat exchanger 30, an outdoor flow rate regulator CD, a vessel 40, and an indoor heat exchanger 50 that are connected in order by a refrigerant pipe R. The refrigerant pipe R between the vessel 40 and the indoor heat exchanger 50 includes a cooling pipe CR having an inlet end CRa and an outlet end CRb.
Here, the cooling pipe CR is in contact with electric components via a metal plate MB.
The air conditioning system further includes a vessel pressure-increasing pipe BP and a control unit 60. The vessel pressure-increasing pipe BP is provided with a flow rate control member DM. One end of the vessel pressure-increasing pipe BP is connected between the compressor 10 and the outdoor heat exchanger 30, while the other end of the vessel pressureincreasing pipe BP is connected between the vessel 40 and the outdoor flow rate regulator CD. The control unit 60 controls the operation of the air conditioning system.
Here, a water heat exchanger is adopted as the outdoor heat exchanger 30.
A motor-operated valve is adopted as the outdoor flow rate regulator CD.
A motor-operated valve is adopted as the flow rate control member DM.
The operation of the air conditioning system according to the first embodiment of the present invention will be described below.
-Cooling OperationHere, it is assumed, for convenience of description, that the flow rate control member DM is closed.
In this state, refrigerant compressed by the compressor 10 and discharged from a discharge end of the compressor 10 flows into the outdoor heat exchanger 30, and then the outdoor heat exchanger 30 exchanges heat with the refrigerant and reduces the temperature of the refrigerant. After that, the refrigerant flows through the outdoor flow rate regulator CD and flows into the vessel 40.
Next, the refrigerant flowing out of the vessel 40 flows into the cooling pipe CR, and cools the electric components by means of the cooling pipe CR.
Thereafter, the refrigerant flows out of the cooling pipe CR and flows into the indoor heat exchanger 50, and then the indoor heat exchanger 50 exchanges heat with the refrigerant.
Finally, the refrigerant flows out of the indoor heat exchanger 50 and returns to a suction end of the compressor 10.
-Condensation Suppression OperationWhen the control unit 60 determines that a cooling pipe condensation condition is satisfied (when, for example, an outlet temperature TL of the cooling pipe CR is lower than an environmental temperature Ta during the cooling operation), the control unit 60 increases the opening degree of the flow rate control member DM.
Specifically, when the control unit 60 determines that the cooling pipe condensation condition is satisfied, the control unit 60 determines whether the outlet temperature TL of the cooling pipe CR is equal to the environmental temperature Ta while increasing the opening degree of the flow rate control member DM. If the outlet temperature TL of the cooling pipe CR cannot reach the environmental temperature Ta even at the maximum opening degree of the flow rate control member DM, the control unit 60 decreases the opening degree of the outdoor flow rate regulator CD.
Here, the reason for first increasing the opening degree of the flow rate control member DM and then decreasing the opening degree of the outdoor flow rate regulator CD is as follows. If the opening degree of the outdoor flow rate regulator CD is decreased first, the pressure loss of the circuit increases, the pressure at the inlet of the cooling pipe CR decreases, and furthermore, condensation occurs due to a temperature drop of the cooling pipe CR.
According to the air conditioning system of the present embodiment, when the control unit 60 determines that the cooling pipe condensation condition is satisfied, the control unit 60 increases the opening degree of the flow rate control member DM. As a result, the pressure of saturated liquid refrigerant whose degree of subcooling at the outlet of the vessel is 0°C increases, whereby the temperature (outlet temperature) of the cooling pipe CR increases. This makes it easy to suppress condensation on the cooling pipe CR. As a result, problems such as condensation water dripping on, for example, the electric components constituting the air conditioning system and causing short-circuiting, are less likely to occur.
During the condensation suppression operation of the air conditioning system according to the present embodiment, the time of controlling the opening degree of the flow rate control member DM is shifted from the time of controlling the opening degree of the outdoor flow rate regulator CD, and thus the control can be simplified.
<Second Embodiment
An air conditioning system according to a second embodiment of the present invention will be described below with reference to FIG. 2. FIG. 2 is a schematic diagram illustrating a circuit structure of the air conditioning system according to the second embodiment of the present invention.
The structure of the air conditioning system according to the present embodiment is basically the same as that of the air conditioning system according to the above-described first embodiment, a difference therebetween being that a switching device 20 is installed in the air conditioning system according to the present embodiment.
Specifically, as illustrated in FIG. 2, the switching device 20 that switches the air conditioning system between a cooling operation and a heating operation is installed in a refrigerant pipe R between a compressor 10 and an outdoor heat exchanger 30. One end of a vessel pressure-increasing pipe BP is connected between the compressor 10 and the switching device 20, while the other end of the vessel pressure-increasing pipe BP is connected between a vessel 40 and an outdoor flow rate regulator CD. Here, for example, a four-way switching valve is adopted as the switching device 20.
The operation of the air conditioning system according to the second embodiment of the present invention will be described below.
The air conditioning system according to the present embodiment can perform the heating operation in addition to the cooling operation and the condensation suppression operation. Since the cooling operation and the condensation suppression operation are similar to the cooling operation and the condensation suppression operation of the first embodiment, respectively, the description thereof will be omitted here, and only the heating operation will be described.
-Heating OperationHere, a flow rate control member DM is closed by a control unit 60, and the switching device 20 is switched to the state illustrated by the broken lines in FIG. 2.
In this state, refrigerant compressed by the compressor 10 and discharged from a discharge end of the compressor 10 flows into an indoor heat exchanger 50 via the switching device 20. The indoor heat exchanger 50 exchanges heat with the refrigerant, and the resultant low-temperature refrigerant then flows into the cooling pipe CR and cools electric components by means of the cooling pipe CR.
Next, the refrigerant flows out of the cooling pipe CR, and flows through the vessel 40 and the outdoor flow rate regulator CD.
Thereafter, the refrigerant flows into the outdoor heat exchanger 30, and then the outdoor heat exchanger 30 exchanges heat with the refrigerant.
Finally, the refrigerant flows out of the outdoor heat exchanger 30, and returns to a suction end of the compressor 10 via the switching device 20.
According to the air conditioning system of the present embodiment, in a similar manner to the above-described first embodiment, when the control unit 60 determines that a cooling pipe condensation condition is satisfied (when, for example, an outlet temperature TL of the cooling pipe CR is lower than an environmental temperature Ta during the cooling operation), the control unit 60 increases the opening degree of the flow rate control member DM. As a result, the pressure of saturated liquid refrigerant whose degree of subcooling at the outlet of the vessel 40 is 0°C increases, whereby the temperature (outlet temperature) of the cooling pipe CR increases. This makes it easy to suppress condensation on the cooling pipe CR. As a result, problems such as condensation water dripping on, for example, the electric components constituting the air conditioning system and causing short-circuiting, are less likely to occur.
The air conditioning system according to the present embodiment can be switched between the cooling operation and the heating operation as necessary.
Although the present invention has been described above by way of examples with reference to the drawings, it is clear that the specific implementation of the present invention is not restricted by the above-described embodiments.
For example, the water heat exchanger is adopted as the outdoor heat exchanger 30 in the above-described embodiments, but the outdoor heat exchanger is not limited to the water heat exchanger. Alternatively, an air heat exchanger may be adopted.
During the condensation suppression operation in the above-described embodiments, when the control unit 60 determines that the cooling pipe condensation condition is satisfied, the control unit 60 determines whether the outlet temperature TL of the cooling pipe CR is equal to the environmental temperature Ta while increasing the opening degree of the flow rate control member DM. If the outlet temperature TL of the cooling pipe CR cannot reach the environmental temperature Ta even at the maximum opening degree of the flow rate control member DM, the control unit 60 decreases the opening degree of the outdoor flow rate regulator CD.
However, the present invention is not limited to this operation. Alternatively, when the control unit 60 determines that the cooling pipe condensation condition is satisfied, the control unit 60 may increase the opening degree of the flow rate control member, and simultaneously decrease the opening degree of the outdoor flow rate regulator such that the outlet temperature of the cooling pipe reaches or exceeds the environmental temperature.
In this case, the outlet temperature of the cooling pipe can reach or exceed the environmental temperature relatively quickly.
Although the motor-operated valve is adopted as the flow rate control member DM in the above-described embodiments, the flow rate control member is not limited to the motoroperated valve. Alternatively, an electromagnetic valve may be adopted.
In this case, when the control unit 60 determines that the cooling pipe condensation condition is satisfied during the condensation suppression operation, for example, the control unit 60 opens the flow rate control member DM and determines whether the outlet temperature TL of the cooling pipe CR is equal to or higher than the environmental temperature Ta, and if the outlet temperature TL of the cooling pipe CR cannot reach or exceed the environmental temperature Ta even with the opened flow rate control member DM, the control unit 60 decreases the opening degree of the outdoor flow rate regulator CD.
In this case, when the control unit 60 determines that the cooling pipe condensation condition is satisfied during the condensation suppression operation, for example, the control unit 60 may open the flow rate control member, and simultaneously decrease the opening degree of the outdoor flow rate regulator such that the outlet temperature of the cooling pipe reaches or exceeds the environmental temperature.
<Other Embodiments>
In the air conditioning systems according to the first and second embodiments, the vessel 40 is interposed between the cooling pipe CR and the outdoor flow rate regulator CD. Alternatively, the vessel 40 may be removed.
REFERENCE SIGNS LIST
Compressor
Switching device
Outdoor heat exchanger
Vessel
Indoor heat exchanger
Control unit
R Refrigerant pipe
CD Outdoor flow rate regulator
| CR | Cooling pipe |
| CRa | Inlet end |
| CRb | Outlet end |
| DM | Flow rate control member |
| 5 MB | Metal plate |
Claims (9)
- THE CLAIMS DEFINING THE INVENTION ARE AS FOLLOWS:-1. An air conditioning system including:) a compressor;an outdoor heat exchanger;5 an outdoor flow rate regulator;a vessel; and an indoor heat exchanger, the compressor, the outdoor heat exchanger, the outdoor flow rate regulator, the vessel, and the indoor heat exchanger being connected in order by a refrigerant pipe, the refrigerant 0 pipe between the vessel and the indoor heat exchanger including a cooling pipe, wherein the air conditioning system further includes a vessel pressure-increasing pipe and a control unit, the vessel pressure-increasing pipe is provided with a flow rate control member, one end of the vessel pressure-increasing pipe is connected between the compressor and the outdoor heat exchanger, the other end of the vessel pressure-increasing pipe is 5 connected between the vessel and the outdoor flow rate regulator, and the control unit controls an operation of the air conditioning system, and when the control unit determines that a cooling pipe condensation condition, which is required for occurrence of condensation on the cooling pipe, is satisfied, the control unit increases an opening degree of the flow rate control member.Ό
- 2. The air conditioning system according to claim 1, wherein, when the control unit determines that the cooling pipe condensation condition is satisfied, the control unit maximizes the opening degree of the flow rate control member and then decreases an opening degree of the outdoor flow rate regulator such that an outlet temperature of the cooling pipe reaches or exceeds an environmental temperature.25
- 3. The air conditioning system according to claim 1, wherein, when the control unit determines that the cooling pipe condensation condition is satisfied, the control unit increases the opening degree of the flow rate control member, and simultaneously decreases an opening degree of the outdoor flow rate regulator.
- 4. The air conditioning system according to claim 1,30 wherein the refrigerant pipe between the compressor and the outdoor heat exchanger is provided with a switching device that switches the air conditioning system between a cooling operation and a heating operation, and one end of the vessel pressure-increasing pipe is connected between the compressor and the switching device.2017395110 21 Aug 2019
- 5. The air conditioning system according to any one of claims 1 to 4, wherein the flow rate control member is a motor-operated valve or an electromagnetic valve.
- 6. The air conditioning system according to any one of claims 1 to 4,5 wherein the outdoor heat exchanger is a water heat exchanger.
- 7. The air conditioning system according to any one of claims 1 to 4, wherein, when the outlet temperature of the cooling pipe is lower than the environmental temperature during the cooling operation, the control unit determines that the cooling pipe condensation condition is satisfied.0
- 8. An air conditioning system including:a compressor;an outdoor heat exchanger;an outdoor flow rate regulator; and an indoor heat exchanger,5 the compressor, the outdoor heat exchanger, the outdoor flow rate regulator, and the indoor heat exchanger being connected in order by a refrigerant pipe, the refrigerant pipe between the outdoor flow rate regulator and the indoor heat exchanger including a cooling pipe, wherein the air conditioning system further includes a pressure-increasing pipe and a control unit, the pressure-increasing pipe is provided with a flow rate control member, one end 10 of the pressure-increasing pipe is connected between the compressor and the outdoor heat exchanger, the other end of the pressure-increasing pipe is connected between the cooling pipe and the outdoor flow rate regulator, and the control unit controls an operation of the air conditioning system, and when the control unit determines that a cooling pipe condensation condition, which is 25 required for occurrence of condensation on the cooling pipe, is satisfied, the control unit increases an opening degree of the flow rate control member.
- 9. The air conditioning system according to claim 8, wherein, when the control unit determines that the cooling pipe condensation condition is satisfied, the control unit maximizes the opening degree of the flow rate control 30 member and then decreases an opening degree of the outdoor flow rate regulator such that an outlet temperature of the cooling pipe reaches or exceeds an environmental temperature.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710053673.7 | 2017-01-22 | ||
| CN201710053673.7A CN108344079A (en) | 2017-01-22 | 2017-01-22 | Air-conditioning system |
| PCT/JP2017/047002 WO2018135279A1 (en) | 2017-01-22 | 2017-12-27 | Air-conditioning system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| AU2017395110A1 AU2017395110A1 (en) | 2019-09-12 |
| AU2017395110B2 true AU2017395110B2 (en) | 2019-09-19 |
Family
ID=62908808
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2017395110A Active AU2017395110B2 (en) | 2017-01-22 | 2017-12-27 | Air conditioning system |
Country Status (4)
| Country | Link |
|---|---|
| CN (1) | CN108344079A (en) |
| AU (1) | AU2017395110B2 (en) |
| MY (1) | MY196222A (en) |
| WO (1) | WO2018135279A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113606821A (en) * | 2021-08-31 | 2021-11-05 | 美的集团武汉暖通设备有限公司 | Air source heat pump device, control method and storage medium |
| CN113865137B (en) * | 2021-09-08 | 2022-12-09 | 美的集团武汉暖通设备有限公司 | Air source heat pump system and control method of air source heat pump |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6454174A (en) * | 1987-08-26 | 1989-03-01 | Asahi Kogyosha | Dehumidification capacity control type cooling unit |
| WO2008059803A1 (en) * | 2006-11-13 | 2008-05-22 | Daikin Industries, Ltd. | Heat exchanging system |
| JP2016014512A (en) * | 2014-07-03 | 2016-01-28 | ダイキン工業株式会社 | Freezer |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101865552A (en) * | 2010-06-22 | 2010-10-20 | 合肥天鹅制冷科技有限公司 | Air conditioning equipment |
| JP5694018B2 (en) * | 2011-03-16 | 2015-04-01 | 株式会社日本自動車部品総合研究所 | Cooling system |
| CN203964447U (en) * | 2014-06-16 | 2014-11-26 | 广东美的暖通设备有限公司 | Heat pump |
| CN105928109A (en) * | 2016-05-27 | 2016-09-07 | 珠海格力电器股份有限公司 | Air conditioning system with module heat exchange device and air conditioner with air conditioning system |
-
2017
- 2017-01-22 CN CN201710053673.7A patent/CN108344079A/en active Pending
- 2017-12-27 WO PCT/JP2017/047002 patent/WO2018135279A1/en active Application Filing
- 2017-12-27 AU AU2017395110A patent/AU2017395110B2/en active Active
- 2017-12-27 MY MYPI2019004085A patent/MY196222A/en unknown
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6454174A (en) * | 1987-08-26 | 1989-03-01 | Asahi Kogyosha | Dehumidification capacity control type cooling unit |
| WO2008059803A1 (en) * | 2006-11-13 | 2008-05-22 | Daikin Industries, Ltd. | Heat exchanging system |
| JP2016014512A (en) * | 2014-07-03 | 2016-01-28 | ダイキン工業株式会社 | Freezer |
Also Published As
| Publication number | Publication date |
|---|---|
| AU2017395110A1 (en) | 2019-09-12 |
| CN108344079A (en) | 2018-07-31 |
| WO2018135279A1 (en) | 2018-07-26 |
| MY196222A (en) | 2023-03-23 |
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Legal Events
| Date | Code | Title | Description |
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| DA3 | Amendments made section 104 |
Free format text: THE NATURE OF THE AMENDMENT IS: AMEND THE INVENTION TITLE TO READ AIR CONDITIONING SYSTEM |
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| FGA | Letters patent sealed or granted (standard patent) |