CN211739590U - Oil return system for low-temperature continuous heating and air conditioning equipment - Google Patents
Oil return system for low-temperature continuous heating and air conditioning equipment Download PDFInfo
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- CN211739590U CN211739590U CN202020214004.0U CN202020214004U CN211739590U CN 211739590 U CN211739590 U CN 211739590U CN 202020214004 U CN202020214004 U CN 202020214004U CN 211739590 U CN211739590 U CN 211739590U
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 40
- 238000004378 air conditioning Methods 0.000 title claims abstract description 14
- 239000003921 oil Substances 0.000 claims abstract description 114
- 238000005485 electric heating Methods 0.000 claims abstract description 77
- 239000010687 lubricating oil Substances 0.000 claims abstract description 20
- 239000003507 refrigerant Substances 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 4
- 230000006698 induction Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000004044 response Effects 0.000 description 4
- 238000010257 thawing Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 239000010726 refrigerant oil Substances 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 238000004781 supercooling Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
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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
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
- F25B47/02—Defrosting cycles
- F25B47/022—Defrosting cycles hot gas defrosting
-
- 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
- F24F11/42—Defrosting; Preventing freezing of outdoor units
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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
- F25B31/00—Compressor arrangements
-
- 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
- F25B41/00—Fluid-circulation arrangements
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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
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
-
- 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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
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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)
- Analytical Chemistry (AREA)
- Power Engineering (AREA)
- Air Conditioning Control Device (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
The utility model discloses an oil return system and air conditioning equipment that low temperature was heated in succession. Wherein, this system includes: an oil return pipeline arranged between the air suction port of the compressor and the electric heating component; and the oil return capillary tube and the oil return electromagnetic valve are arranged on the oil return pipeline, one end of the oil return capillary tube is connected with the bottom of the electric heating part, the other end of the oil return capillary tube is connected with one end of the oil return electromagnetic valve, and the other end of the oil return electromagnetic valve is connected with an air suction port of the compressor. The utility model discloses a set up back oil pipe way between the induction port of air conditioning equipment's compressor and electric heating part to and oil return capillary, oil return solenoid valve, realize that the lubricating oil in the electric heating part flows back the induction port to the compressor through returning oil pipe way. Thereby solve the oil deposit problem among the electric heating part, guarantee unit operational reliability, improve the unit low temperature heating volume, realize heating in succession under the low temperature environment, indoor ambient temperature is more stable, guarantees that the user uses the travelling comfort.
Description
Technical Field
The utility model relates to a unit technical field particularly, relates to an oil return system and air conditioning equipment that low temperature heats in succession.
Background
When the air source heat pump operates for heating, the outdoor heat exchanger is used as an evaporator, the temperature of the evaporator is low, and when the temperature is lower than zero and the outdoor environment has certain humidity, the outdoor heat exchanger may frost.
The frosting of outdoor heat exchanger can lead to the heat transfer performance variation of heat exchanger, and the circulation of air is obstructed, and unit heating capacity variation can appear not having heating effect even blowing cold wind phenomenon when serious, leads to user experience poor or arouses the customer complains even.
Therefore, when the unit is used for heating, the judgment can be carried out according to the conditions such as the running state of the unit, and the defrosting can be carried out on the unit in due time, so that the heating effect of the unit can be ensured. When an existing air conditioning unit is operated in a defrosting mode, the direction is changed by a four-way valve, the air conditioning unit is switched into a refrigerating operation mode, an indoor heat exchanger is used as an evaporator, an outdoor heat exchanger is used as a condenser, and a frost layer is melted by heat dissipated by condensation of the condenser. As such, during defrosting, since the indoor heat exchanger is an evaporator, it may cause the indoor ambient temperature to fluctuate, giving a user an uncomfortable experience.
In the continuous heating operation process of the unit in a low-temperature environment, the problem of storage of the refrigeration oil in the electric heating part can exist, and the operational reliability of the unit can be damaged.
Aiming at the problem that the refrigerating oil is accumulated in an electric heating part due to the continuous heating of the unit at low temperature in the prior art, an effective solution is not provided at present.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides an in provide an oil return system and air conditioning equipment that low temperature heats in succession to the unit low temperature heats in succession among the solution prior art and leads to the problem that the electrical heating part stores up the refrigeration oil.
In order to solve the technical problem, the utility model provides an oil return system that low temperature heats in succession, wherein, this system includes: compressor and electric heating part still includes: the oil return pipeline is arranged between the air suction port of the compressor and the electric heating part, so that the lubricating oil in the electric heating part flows back to the air suction port of the compressor through the oil return pipeline; the oil return capillary and the oil return electromagnetic valve are arranged on the oil return pipeline, one end of the oil return capillary is connected with the bottom of the electric heating component, the other end of the oil return capillary is connected with one end of the oil return electromagnetic valve, and the other end of the oil return electromagnetic valve is connected with an air suction port of the compressor.
Furthermore, an exhaust pipe is arranged in the electric heating part, an oil return hole is formed in the bottom of the exhaust pipe, and when the electric heating part works, lubricating oil in the electric heating part enters the exhaust pipe from the oil return hole, so that the lubricating oil is taken away by a refrigerant flowing in the exhaust pipe.
Further, the exhaust pipe of the electric heating part is provided in a "U" shape.
Furthermore, the oil return electromagnetic valve is opened when the unit meets the electric heating oil discharge condition, so that the lubricating oil in the electric heating part flows back to the air suction port of the compressor through the oil return pipeline.
Further, the electrically heated oil discharge condition is one of the following conditions: the unit is in heating operation, and the accumulated working time of the electric heating part reaches the preset time; the unit executes the oil return operation of the whole machine; the accumulated working time of the electric heating part does not reach the preset time, and the unit is switched from the heating operation mode to the cooling operation mode.
The utility model also provides an air conditioning equipment, wherein, air conditioning equipment includes the oil return system of foretell low temperature continuous heating.
Use the technical scheme of the utility model, through set up back oil pipe way between the induction port of air conditioning equipment's compressor and electric heating part to and oil return capillary, oil return solenoid valve, realize that the lubricating oil in the electric heating part flows back the induction port of compressor through returning oil pipe way. Thereby solve the oil deposit problem among the electric heating part, guarantee unit operational reliability, improve the unit low temperature heating volume, realize heating in succession under the low temperature environment, indoor ambient temperature is more stable, guarantees that the user uses the travelling comfort.
Drawings
Fig. 1 is a schematic structural diagram of an oil return system for low-temperature continuous heating according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an oil return system for low-temperature continuous heating according to an embodiment of the present invention;
fig. 3 is a flowchart of an oil return control method for low-temperature continuous heating according to an embodiment of the present invention.
Description of reference numerals:
the system comprises a compressor 1, an oil separator 2, a four-way valve 3, an outdoor heat exchanger 4, a second electric heating part 5, an electric heating part 6, an oil return capillary tube 7, an oil return electromagnetic valve 8, an air inlet valve 9, an air inlet valve 10, an auxiliary throttling part 11, an overcooling valve 12, a first exhaust valve 13, a second exhaust valve 14, an exhaust pipe of the electric heating part 15 and an enthalpy increasing valve 16.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the embodiments of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise, and "a plurality" typically includes at least two.
It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
The words "if", as used herein, may be interpreted as "at … …" or "at … …" or "in response to a determination" or "in response to a detection", depending on the context. Similarly, the phrases "if determined" or "if detected (a stated condition or event)" may be interpreted as "when determined" or "in response to a determination" or "when detected (a stated condition or event)" or "in response to a detection (a stated condition or event)", depending on the context.
It is also noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that an article or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such article or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in the article or device in which the element is included.
The following describes in detail alternative embodiments of the present invention with reference to the accompanying drawings.
Example 1
Fig. 1 is a schematic structural diagram of an oil return system for low-temperature continuous heating according to an embodiment of the present invention, as shown in fig. 1, the system includes an indoor unit and an outdoor unit, the outdoor unit includes an outdoor heat exchanger 4, a compressor 1, an auxiliary throttling component 11, an electric heating component 6, and the like, and the system further includes:
an oil return pipeline arranged between the air suction port of the compressor 1 and the electric heating part 6 so that the lubricating oil in the electric heating part 6 flows back to the air suction port of the compressor 1 through the oil return pipeline;
and the oil return capillary tube 7 and the oil return electromagnetic valve 8 are arranged on the oil return pipeline, one end of the oil return capillary tube 7 is connected with the bottom of the electric heating part 6, the other end of the oil return capillary tube 7 is connected with one end of the oil return electromagnetic valve 8, and the other end of the oil return electromagnetic valve 8 is connected with an air suction port of the compressor 1.
The oil return electromagnetic valve 8 is opened when the unit meets the condition of electric heating oil discharge, so that the lubricating oil in the electric heating part 6 flows back to the air suction port of the compressor 1 through an oil return pipeline. The electrical heating oil discharge condition is one of the following conditions: the unit is in heating operation, and the accumulated working time of the electric heating part reaches the preset time; the unit executes the oil return operation of the whole machine; and the accumulated working time of the electric heating part does not reach the preset time, and the unit is switched from the heating operation mode to the cooling operation mode. In the above case, when the unit is continuously operated for heating in a low-temperature environment, the refrigerant oil tends to accumulate in the electric heating part 6. And controlling the oil return electromagnetic valve 8 to be opened at the moment, so that the lubricating oil in the electric heating part is discharged, and the stable operation of the unit is ensured.
It should be noted that the above-mentioned control of the opening of the oil return solenoid valve 8 is for executing oil discharge operation, and in order to further ensure the oil discharge effect, the unit further triggers the following actions:
the compressor 1 operates according to the demand of the computing capacity of the unit;
the second electric heating part 5 starts to operate; the second electric heating part 5 is arranged between the auxiliary throttling part 11 and the electric heating part 6, one end of the second electric heating part is connected with the auxiliary throttling part 11, the other end of the second electric heating part is connected with the electric heating part 6, and the refrigerant can flow out of the auxiliary throttling part 11, then flows into the electric heating part 6 through the second heating part 5;
the electric heating part 6 stops working;
an oil return electromagnetic valve 8: switching to an on state;
liquid inlet valve 10: switching to an off state or maintaining the off state;
enthalpy increasing valve 13: switching to an off state or maintaining the off state;
an intake valve 9: switching to an on state or maintaining the on state;
the auxiliary throttle member 11: opening a certain opening degree and maintaining the opening degree until the oil discharge control is finished;
supercooling valve 12: maintaining the closed state or switching to the closed state;
through the oil discharge operation, the refrigerant heated by the second electric heating part 5 enters the electric heating part 6, the pressure in the electric heating part 6 is increased, the lubricating oil in the electric heating part 6 can be accelerated to flow back to the compressor 1 from the oil return pipeline at the bottom, and the lubricating oil accumulated in the electric heating part 6 is discharged.
In order to further discharge the refrigerating oil accumulated in the electric heating part, the utility model also provides a preferred implementation mode. Fig. 2 is according to the utility model discloses the oil return system's that heats in succession of low temperature preferred structure schematic diagram, as shown in fig. 2, sets up blast pipe 15 in the electric heating part 6, and the bottom of blast pipe 15 sets up the oil gallery for when electric heating part 6 during operation, lubricating oil in the electric heating part 6 gets into blast pipe 15 from the oil gallery, so that the refrigerant that flows in blast pipe 15 takes away lubricating oil. Preferably, the exhaust pipe 15 of the electric heating unit 6 is formed in a "U" shape to facilitate the flow of the refrigerant. The number and the position arrangement of the oil return holes may be determined according to actual requirements, which is not limited in this embodiment.
The embodiment also provides air conditioning equipment which comprises the oil return system for low-temperature continuous heating, so that lubricating oil accumulated in the electric heating part can be effectively discharged in time when the unit continuously heats and operates in a low-temperature environment, and the operation stability of the unit is ensured.
Example 2
Fig. 3 is a flowchart of an oil return control method for low-temperature continuous heating according to an embodiment of the present invention, which is applied to the oil return system for low-temperature continuous heating described in the above embodiment, as shown in fig. 3, the method includes the following steps:
step S301, monitoring the running state of the unit and acquiring the accumulated working time of the electric heating part;
step S302, judging whether the unit meets the electric heating oil discharge condition or not according to the running state and the accumulated working time;
step S303, if the electrical heating oil discharge condition is met, the oil return electromagnetic valve is controlled to open to perform oil discharge operation, so that the lubricating oil in the electrical heating part flows back to the air suction port of the compressor through the oil return pipeline.
The electric heating oil discharge condition is one of the following conditions: the unit is in heating operation, and the accumulated working time of the electric heating part reaches the preset time; the unit executes the oil return operation of the whole machine; and the accumulated working time of the electric heating part does not reach the preset time, and the unit is switched from the heating operation mode to the cooling operation mode. In the above case, when the unit is continuously operated for heating in a low-temperature environment, the refrigerant oil tends to accumulate in the electric heating part. And controlling the oil return electromagnetic valve to be opened at the moment, so that the lubricating oil in the electric heating part is discharged, and the stable operation of the unit is ensured.
For the oil drain operation described above, in addition to controlling the oil return solenoid valve to open, the following operations may be performed, thereby improving the oil return effect:
controlling the electric heating part to stop working;
controlling the compressor to normally operate;
controlling the second electric heating part to start working;
controlling the first exhaust valve and the second exhaust valve to be switched to a closed state;
controlling the liquid inlet valve to be switched to a closed state or to maintain the closed state;
controlling the enthalpy-increasing valve to be switched to a closed state or to maintain the closed state;
controlling the air inlet valve to be switched to an opening state or maintain the opening state;
controlling an auxiliary throttling component to open a preset opening degree and maintaining the preset opening degree until the oil discharging operation is finished;
and controlling the supercooling valve to maintain the closed state or switch to the closed state.
The oil discharge operation is executed when the unit accords with the electric heating oil discharge condition through the operation of monitoring unit in this embodiment. Thereby solve the oil deposit problem among the electric heating part, guarantee unit operational reliability, improve the unit low temperature heating volume, realize heating in succession under the low temperature environment, indoor ambient temperature is more stable, guarantees that the user uses the travelling comfort.
Example 3
The embodiment of the present invention provides a software for executing the technical solutions described in the above embodiments and preferred embodiments.
The embodiment of the utility model provides a non-volatile computer storage medium, computer storage medium storage has computer executable instruction, and the oil return control method that the low temperature in the above-mentioned arbitrary method embodiment of this computer executable instruction executable heated in succession.
The storage medium stores the software, and the storage medium includes but is not limited to: optical disks, floppy disks, hard disks, erasable memory, etc.
The above-mentioned air conditioning equipment that introduces can carry out the embodiment of the utility model provides a method possesses corresponding functional module of execution method and beneficial effect. For technical details that are not described in detail in this embodiment, reference may be made to the method provided by the embodiments of the present invention.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (6)
1. An oil return system for low temperature continuous heating, the system comprising: compressor and electric heating part still includes:
the oil return pipeline is arranged between the air suction port of the compressor and the electric heating part, so that the lubricating oil in the electric heating part flows back to the air suction port of the compressor through the oil return pipeline;
the oil return capillary and the oil return electromagnetic valve are arranged on the oil return pipeline, one end of the oil return capillary is connected with the bottom of the electric heating component, the other end of the oil return capillary is connected with one end of the oil return electromagnetic valve, and the other end of the oil return electromagnetic valve is connected with an air suction port of the compressor.
2. The system of claim 1,
the exhaust pipe is arranged in the electric heating component, an oil return hole is formed in the bottom of the exhaust pipe, and when the electric heating component works, lubricating oil in the electric heating component enters the exhaust pipe from the oil return hole, so that the lubricating oil is taken away by a refrigerant flowing in the exhaust pipe.
3. The system of claim 1,
the exhaust pipe of the electric heating part is U-shaped.
4. The system of claim 1, wherein the oil return solenoid valve is opened when the unit meets an electric heating oil discharge condition to enable the lubricating oil in the electric heating part to flow back to the suction port of the compressor through the oil return pipeline.
5. The system of claim 4, wherein the electrically heated oil discharge condition is one of:
the unit is in heating operation, and the accumulated working time of the electric heating part reaches the preset time;
the unit executes the oil return operation of the whole machine;
the accumulated working time of the electric heating part does not reach the preset time, and the unit is switched from the heating operation mode to the cooling operation mode.
6. An air conditioning apparatus, characterized in that it comprises an oil return system for low-temperature continuous heating according to any one of claims 1 to 5.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911013492.7A CN110645745A (en) | 2019-10-23 | 2019-10-23 | Air conditioner capable of continuously heating and control method thereof |
| CN2019110134927 | 2019-10-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211739590U true CN211739590U (en) | 2020-10-23 |
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ID=69013336
Family Applications (14)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911013492.7A Pending CN110645745A (en) | 2019-10-23 | 2019-10-23 | Air conditioner capable of continuously heating and control method thereof |
| CN202020213424.7U Active CN211739589U (en) | 2019-10-23 | 2020-02-26 | Air conditioning system |
| CN202010121467.7A Active CN111102772B (en) | 2019-10-23 | 2020-02-26 | Oil return system for low-temperature continuous heating, oil return control method and air conditioning equipment |
| CN202010121494.4A Active CN111102774B (en) | 2019-10-23 | 2020-02-26 | Uninterrupted heating air conditioning system, control method thereof and air conditioning equipment |
| CN202020214004.0U Active CN211739590U (en) | 2019-10-23 | 2020-02-26 | Oil return system for low-temperature continuous heating and air conditioning equipment |
| CN202010120896.2A Pending CN111121353A (en) | 2019-10-23 | 2020-02-26 | Air conditioner capable of improving heat exchange performance and control method thereof |
| CN202020214766.0U Active CN211739592U (en) | 2019-10-23 | 2020-02-26 | Air conditioning system capable of continuously heating |
| CN202020214742.5U Active CN211876449U (en) | 2019-10-23 | 2020-02-26 | Circulating system capable of continuously heating and air conditioner |
| CN202010121492.5A Withdrawn CN111102773A (en) | 2019-10-23 | 2020-02-26 | Circulating system capable of continuously heating, control method thereof and air conditioner |
| CN202020214741.0U Active CN211739591U (en) | 2019-10-23 | 2020-02-26 | Air conditioning system and air conditioning equipment that incessant heats |
| CN202020213405.4U Active CN211739588U (en) | 2019-10-23 | 2020-02-26 | Air conditioner capable of improving heat exchange performance |
| CN202010120876.5A Pending CN111102770A (en) | 2019-10-23 | 2020-02-26 | Air conditioning system capable of continuously heating |
| CN202010120879.9A Pending CN111102771A (en) | 2019-10-23 | 2020-02-26 | Air conditioning system and control method thereof |
| CN202010318282.5A Pending CN111288694A (en) | 2019-10-23 | 2020-04-21 | Air conditioner capable of continuously heating and control method thereof |
Family Applications Before (4)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911013492.7A Pending CN110645745A (en) | 2019-10-23 | 2019-10-23 | Air conditioner capable of continuously heating and control method thereof |
| CN202020213424.7U Active CN211739589U (en) | 2019-10-23 | 2020-02-26 | Air conditioning system |
| CN202010121467.7A Active CN111102772B (en) | 2019-10-23 | 2020-02-26 | Oil return system for low-temperature continuous heating, oil return control method and air conditioning equipment |
| CN202010121494.4A Active CN111102774B (en) | 2019-10-23 | 2020-02-26 | Uninterrupted heating air conditioning system, control method thereof and air conditioning equipment |
Family Applications After (9)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010120896.2A Pending CN111121353A (en) | 2019-10-23 | 2020-02-26 | Air conditioner capable of improving heat exchange performance and control method thereof |
| CN202020214766.0U Active CN211739592U (en) | 2019-10-23 | 2020-02-26 | Air conditioning system capable of continuously heating |
| CN202020214742.5U Active CN211876449U (en) | 2019-10-23 | 2020-02-26 | Circulating system capable of continuously heating and air conditioner |
| CN202010121492.5A Withdrawn CN111102773A (en) | 2019-10-23 | 2020-02-26 | Circulating system capable of continuously heating, control method thereof and air conditioner |
| CN202020214741.0U Active CN211739591U (en) | 2019-10-23 | 2020-02-26 | Air conditioning system and air conditioning equipment that incessant heats |
| CN202020213405.4U Active CN211739588U (en) | 2019-10-23 | 2020-02-26 | Air conditioner capable of improving heat exchange performance |
| CN202010120876.5A Pending CN111102770A (en) | 2019-10-23 | 2020-02-26 | Air conditioning system capable of continuously heating |
| CN202010120879.9A Pending CN111102771A (en) | 2019-10-23 | 2020-02-26 | Air conditioning system and control method thereof |
| CN202010318282.5A Pending CN111288694A (en) | 2019-10-23 | 2020-04-21 | Air conditioner capable of continuously heating and control method thereof |
Country Status (2)
| Country | Link |
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| CN (14) | CN110645745A (en) |
| WO (3) | WO2021169541A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111102772A (en) * | 2019-10-23 | 2020-05-05 | 珠海格力电器股份有限公司 | Oil return system for low-temperature continuous heating, oil return control method and air conditioning equipment |
Families Citing this family (16)
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111102772A (en) * | 2019-10-23 | 2020-05-05 | 珠海格力电器股份有限公司 | Oil return system for low-temperature continuous heating, oil return control method and air conditioning equipment |
| WO2021169539A1 (en) * | 2019-10-23 | 2021-09-02 | 珠海格力电器股份有限公司 | Circulation system and control method and device therefor, and air conditioner |
| CN111102772B (en) * | 2019-10-23 | 2024-03-08 | 珠海格力电器股份有限公司 | Oil return system for low-temperature continuous heating, oil return control method and air conditioning equipment |
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| CN111102773A (en) | 2020-05-05 |
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| CN111102774B (en) | 2024-03-08 |
| CN211739592U (en) | 2020-10-23 |
| WO2021169542A1 (en) | 2021-09-02 |
| CN211739591U (en) | 2020-10-23 |
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