CN110645745A - Air conditioner capable of continuously heating and control method thereof - Google Patents
Air conditioner capable of continuously heating and control method thereof Download PDFInfo
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- CN110645745A CN110645745A CN201911013492.7A CN201911013492A CN110645745A CN 110645745 A CN110645745 A CN 110645745A CN 201911013492 A CN201911013492 A CN 201911013492A CN 110645745 A CN110645745 A CN 110645745A
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- compressor
- heating device
- heating
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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
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- 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
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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
- 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
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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
- 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
Abstract
The invention discloses an air conditioner capable of continuously heating and a control method thereof. Wherein, this air conditioner includes: the defrosting device comprises a compressor, an outdoor heat exchanger and a defrosting branch, wherein one end of the defrosting branch is connected to the exhaust side of the compressor, and the other end of the defrosting branch is connected to the outdoor heat exchanger and used for bypassing part of gaseous refrigerants discharged by the compressor to the outdoor heat exchanger for defrosting in a defrosting mode. According to the invention, the defrosting branch is utilized to bypass part of high-temperature gaseous refrigerant discharged by the compressor to the outdoor heat exchanger for defrosting, and the other part of high-temperature gaseous refrigerant discharged by the compressor enters the indoor heat exchanger for heating, so that continuous heating of the indoor unit in the defrosting process is ensured, the temperature stability of the indoor environment is ensured, and uncomfortable experience of users is avoided.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to an air conditioner capable of continuously heating and a control method thereof.
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 heat exchanger heat transfer performance variation, 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, and user experience is poor or arouses the customer complains even. Therefore, when the unit is used for heating, the defrosting of the unit can be timely carried out according to the judgment of conditions such as the running state of the unit and the like, so that the heating effect of the unit is 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 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. Therefore, during defrosting, the indoor heat exchanger is an evaporator, and the indoor unit stops heating, which may cause indoor environment temperature fluctuation, even cold air blowing, and brings uncomfortable experience to users.
Aiming at the problem that the unit cannot continuously heat during defrosting in the prior art, an effective solution is not provided at present.
Disclosure of Invention
The embodiment of the invention provides an air conditioner capable of continuously heating and a control method thereof, and aims to solve the problem that in the prior art, a unit cannot continuously heat when defrosting.
In order to solve the above technical problem, an embodiment of the present invention provides an air conditioner capable of continuously heating, including a compressor and an outdoor heat exchanger, the air conditioner further including: and one end of the defrosting branch is connected to the exhaust side of the compressor, and the other end of the defrosting branch is connected to the outdoor heat exchanger and used for bypassing part of gaseous refrigerant discharged by the compressor to the outdoor heat exchanger for defrosting in a defrosting mode.
Optionally, a switch is arranged on the defrosting branch.
Optionally, the air conditioner further includes: and the first heating device is respectively connected with the gas-liquid separator and the compressor and used for heating the liquid refrigerant separated by the gas-liquid separator and enabling the heated gaseous refrigerant to flow into the compressor.
Optionally, the first heating device includes: the accommodating part is used for accommodating liquid refrigerant introduced from the gas-liquid separator; the heating part is used for heating the liquid refrigerant in the accommodating part.
Optionally, the first heating device is provided with a liquid inlet port, and the liquid inlet port is connected to the gas-liquid separator through a liquid inlet valve, and is configured to introduce the liquid refrigerant from the gas-liquid separator into the first heating device.
Optionally, the first heating device is provided with a pressure balance port, and the pressure balance port is connected to the gas outlet of the gas-liquid separator through a pressure balance valve, and is used for balancing the pressure between the gas-liquid separator and the first heating device.
Optionally, the first heating device is provided with an exhaust port, and the exhaust port is connected to the compressor and is used for sending the gaseous refrigerant in the first heating device into the compressor.
Optionally, the exhaust port is connected to a suction port of the compressor through a first exhaust valve.
Optionally, if the compressor is provided with an enthalpy increasing port, the exhaust port is connected to the enthalpy increasing port of the compressor sequentially through the second exhaust valve and the enthalpy increasing valve.
Optionally, if the air conditioner includes two or more compressors, and each of the compressors has an enthalpy increasing port, an air suction port of each of the compressors is connected to an air discharge port of the first heating device through the first air discharge valve; the enthalpy increasing ports of the compressors are respectively connected to the second exhaust valve through the enthalpy increasing valves corresponding to the enthalpy increasing ports, so that the enthalpy increasing ports are connected with the exhaust port of the first heating device through the second exhaust valve.
Optionally, if the air conditioner includes two or more compressors, and each of the compressors does not have an enthalpy increasing port, the air suction port of each of the compressors is connected to the air discharge port of the first heating device through the corresponding first air discharge valve.
Optionally, the air conditioner further includes: the second heating device is arranged on a connecting pipeline between the supercooling device and the air inlet side of the compressor and is used for heating a refrigerant flowing to the compressor from the supercooling device.
Optionally, an outlet of the second heating device is connected to an air inlet of the first heating device through an air inlet valve, and is configured to input the gaseous refrigerant heated by the second heating device to the first heating device.
The embodiment of the invention also provides a control method of the air conditioner capable of continuously heating, which is applied to the air conditioner capable of continuously heating provided by any embodiment of the invention, and the method comprises the following steps: when the condition that the defrosting condition is met is detected, controlling the gaseous refrigerant with the first flow rate discharged by the compressor to flow into the outdoor heat exchanger through the defrosting branch to be defrosted; and controlling the gaseous refrigerant with the second flow rate discharged by the compressor to flow into the indoor heat exchanger for heating.
Optionally, the controlling the gaseous refrigerant of the first flow rate discharged by the compressor to flow into the outdoor heat exchanger through the defrosting branch for defrosting includes: and opening a switch on the defrosting branch so that the gaseous refrigerant with the first flow rate flows into the outdoor heat exchanger.
Optionally, after the defrosting condition is detected to be met, the method further includes: opening a first heating device and a liquid inlet valve, and introducing the liquid refrigerant separated by the gas-liquid separator into the first heating device through the liquid inlet valve for heating; and opening a first exhaust valve connected with the air suction port of the compressor, and controlling the gaseous refrigerant in the first heating device to flow into the air suction port of the compressor.
Optionally, after the first heating device and the liquid inlet valve are opened, the method further comprises: and if the compressor is provided with the enthalpy increasing port, closing a second exhaust valve and an enthalpy increasing valve which are connected with the enthalpy increasing port of the compressor.
Optionally, the method further includes: receiving a double low pressure heating instruction; closing a switch on the defrosting branch, starting a first heating device and a liquid inlet valve, and introducing the liquid refrigerant separated by the gas-liquid separator into the first heating device through the liquid inlet valve for heating; if the compressor is provided with an enthalpy increasing port, closing a first exhaust valve connected with an air suction port of the compressor, opening a second exhaust valve connected with the enthalpy increasing port of the compressor and the enthalpy increasing valve, and controlling the gaseous refrigerant in the first heating device to flow into the enthalpy increasing port of the compressor.
Optionally, if the compressor does not have the enthalpy increasing port, the first exhaust valve corresponding to at least one compressor is opened.
Optionally, after the first heating device and the liquid inlet valve are opened, the method further comprises: and opening the pressure balance valve at regular time.
Optionally, after the first heating device and the liquid inlet valve are opened, the method further comprises: and opening a second heating device and an air inlet valve, so that the refrigerant output to the compressor by the supercooling device is heated by the second heating device, flows into the first heating device through the air inlet valve, is mixed with the gaseous refrigerant in the first heating device, and flows into the compressor.
Embodiments of the present invention further provide a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements a method for controlling an air conditioner capable of continuously heating according to any of the embodiments of the present invention.
An embodiment of the present invention further provides an electronic device, including: one or more processors; a memory for storing one or more programs which, when executed by the one or more processors, cause the one or more processors to implement a method for controlling an air conditioner capable of continuously heating as provided in any embodiment of the present invention.
By applying the technical scheme of the invention, the defrosting branch is utilized to bypass part of high-temperature gaseous refrigerant discharged by the compressor to the outdoor heat exchanger for defrosting, and the other part of high-temperature gaseous refrigerant discharged by the compressor enters the indoor heat exchanger for heating, so that the continuous heating of the indoor unit in the defrosting process is ensured, the stable indoor environment temperature is ensured, and the uncomfortable experience of users is avoided. In addition, the liquid refrigerant separated by the gas-liquid separator is heated by the first heating device, and the compressor is supplemented with air, so that the refrigerant in the system fully participates in circulation, the air displacement of the compressor is increased, and the heating capacity in a low-temperature environment is improved. Through reasonable control air conditioner, can form two low pressures in first heating device and outdoor heat exchanger, two low pressures do not influence each other, and the refrigerant evaporates separately wherein, improves outdoor heat exchanger's heat transfer performance, improves the heating capacity under the low temperature environment.
Drawings
Fig. 1 is a first schematic structural diagram of an air conditioner capable of continuously heating according to a first embodiment of the present invention;
fig. 2 is a schematic structural diagram of an air conditioner capable of continuously heating according to a first embodiment of the present invention;
fig. 3 is a schematic structural diagram three of an air conditioner capable of continuously heating according to a first embodiment of the present invention;
fig. 4 is a schematic structural diagram of an air conditioner capable of continuously heating according to a first embodiment of the present invention;
fig. 5 is a flowchart of a control method of an air conditioner capable of continuous heating according to a second embodiment of the present invention;
in the figure:
1. a compressor; 2. an outdoor heat exchanger; 3. a defrosting branch; 31. a switch; 4. a first heating device; 41. a housing member; 42. a heating member; 5. a gas-liquid separator; 6. a liquid inlet valve; 7. a pressure balancing valve; 8. a first exhaust valve; 9. a second exhaust valve; 10. an enthalpy increasing valve; 11. a subcooling device; 12. a second heating device; 13. an intake valve; 51. an oil-gas separator; 52. a four-way valve; 53. an indoor heat exchanger; 54. a throttling device; 55. a high pressure sensor; 56. a low pressure sensor; 57. a filter; 58. an auxiliary throttling device; 59. an over-cooling valve; 60. a gas inlet pipe temperature sensing bulb; 61. the gas is discharged out of the pipe temperature sensing bulb; 62. a muffler; 63. an enthalpy increasing branch valve; 64. the liquid of the supercooling device flows out of the thermal bulb; 65. the gas of the supercooling device flows out of the temperature sensing bulb; 66. the air of the supercooling device enters the thermal bulb.
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 apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein.
Alternative embodiments of the present invention are described in detail below with reference to the accompanying drawings.
Example one
The embodiment provides an air conditioner capable of continuously heating, and an indoor unit does not need to switch modes during defrosting. Fig. 1 is a schematic structural diagram of an air conditioner capable of continuously heating according to an embodiment of the present invention, and as shown in fig. 1, the air conditioner includes: the defrosting device comprises a compressor 1, an outdoor heat exchanger 2 and a defrosting branch 3.
One end of the defrosting branch 3 is connected to the exhaust side of the compressor 1, and the other end is connected to the outdoor heat exchanger 2. The defrosting branch 3 is used for bypassing part of the gaseous refrigerant discharged by the compressor 1 to the outdoor heat exchanger 2 for defrosting in a defrosting mode.
Specifically, one end of the defrosting branch 3 may be connected between the oil separator 51 and the four-way valve 52, and the other end is connected between the throttling device 54 and the outdoor heat exchanger 2.
A part of high-temperature and high-pressure gaseous refrigerant discharged by the compressor enters the outdoor heat exchanger through the defrosting branch to be condensed and radiated so as to realize defrosting of the outdoor heat exchanger, the other part of the high-temperature and high-pressure gaseous refrigerant enters the indoor heat exchanger to realize heating, and the refrigerant discharged from the indoor heat exchanger is mixed with the refrigerant in the defrosting branch after throttling and enters the outdoor heat exchanger.
Optionally, a switch 31 is disposed on the defrosting branch 3. The opening and closing of the switch 31 determines whether the defrosting branch 3 flows the refrigerant. When defrosting is needed, the switch 31 is turned on, and part of the gaseous refrigerant discharged by the compressor enters the outdoor heat exchanger.
This embodiment utilizes and changes the frost branch road to change the frost with compressor exhaust part high temperature gaseous state refrigerant bypass to outdoor heat exchanger, and compressor exhaust another part high temperature gaseous state refrigerant gets into indoor heat exchanger and heats, guarantees from this that the in-process indoor unit that changes the frost continuously heats, guarantees that indoor environment temperature is stable, avoids bringing uncomfortable experience for the user.
In an alternative embodiment, as shown in fig. 1, the air conditioner may further include: the first heating device 4 is connected to the gas-liquid separator 5 and the compressor 1, and is configured to heat the liquid refrigerant separated by the gas-liquid separator 5 and to cause the heated gaseous refrigerant to flow into the compressor 1.
The liquid refrigerant separated by the gas-liquid separator is heated by the first heating device, and the compressor is supplemented with air, so that the refrigerant in the system sufficiently participates in circulation, the air displacement of the compressor is increased, and the heating capacity in a low-temperature environment is improved. Simultaneously, utilize first heating device, can prevent that vapour and liquid separator from taking place the hydrops easily under the low temperature environment or frosting leads to the problem of the quick decay of unit heating capacity, has guaranteed the effect of heating. In addition, the first heating device and the gas-liquid separator can be not communicated by reasonably controlling the air conditioner, so that two low pressures are formed in the first heating device and the outdoor heat exchanger respectively, the two low pressures are not influenced with each other, refrigerants are evaporated in the two low pressures, the heat exchange performance of the outdoor heat exchanger is improved, and the heating capacity in a low-temperature environment is improved.
Optionally, the first heating device 4 comprises: an accommodating part 41 and a heating part 42, wherein the accommodating part 41 is used for accommodating the liquid refrigerant introduced from the gas-liquid separator 5; the heating member 42 heats the liquid refrigerant in the accommodating member 41. The heating member 42 may be disposed inside or on an outer wall of the accommodating member 41, as long as the purpose of heating and evaporating the liquid refrigerant in the accommodating member 41 can be achieved, and the heating member 42 is disposed on the outer wall of the accommodating member 41 in the figure as an example. Therefore, the liquid refrigerant in the gas-liquid separator can be heated through a simple structure, and the compressor is supplemented with air. Specifically, the first heating device 4 may be disposed below the gas-liquid separator 5, so as to facilitate the introduction of the liquid refrigerant into the first heating device 4 by using the gravity. The first heating device 4 may be electrically heated.
Optionally, the first heating device 4 is provided with a liquid inlet port, and the liquid inlet port is connected to the gas-liquid separator 5 through a liquid inlet valve 6, and is used for introducing the liquid refrigerant from the gas-liquid separator 5 into the first heating device 4.
Optionally, the first heating device 4 is provided with a pressure balance port, and the pressure balance port is connected with the gas outlet of the gas-liquid separator 5 through a pressure balance valve 7, and is used for balancing the pressure between the gas-liquid separator 5 and the first heating device 4. When the pressure balance valve is opened, the pressure between the gas-liquid separator and the first heating device is balanced, so that the liquid refrigerant of the gas-liquid separator can be introduced into the first heating device under the action of gravity under the condition of pressure balance; when the pressure balance valve is closed, the first heating device heats, so that the pressure in the first heating device is unequal to the pressure in the gas-liquid separator, two low pressures are formed in the first heating device and the outdoor heat exchanger, the two low pressures are not affected with each other, refrigerants are evaporated in the two low pressures, the heat exchange performance of the outdoor heat exchanger is improved, and the heating capacity in a low-temperature environment is improved.
Optionally, the first heating device 4 is provided with an exhaust port, and the exhaust port is connected to the compressor 1 and is used for sending the gaseous refrigerant in the first heating device 4 into the compressor 1.
Further, the discharge port is connected to a suction port of the compressor 1 through a first discharge valve 8. When the first exhaust valve 8 is opened, the gaseous refrigerant in the first heating device 4 enters the compressor through the air suction port of the compressor to realize air supplement.
As shown in fig. 2, if the compressor 1 has an enthalpy increasing port, the exhaust port is connected to the enthalpy increasing port of the compressor 1 through the second exhaust valve 9 and the enthalpy increasing valve 10 in this order. When the second exhaust valve 9 and the enthalpy increasing valve 10 are opened, the gaseous refrigerant in the first heating device 4 enters the compressor through the enthalpy increasing port of the compressor, so that enthalpy increasing control is realized. The opening of the enthalpy increasing valve 10 allows the refrigerant to smoothly flow to the compressor without flowing back to the second discharge valve.
A silencer 62 can be arranged on the pipeline between the enthalpy-increasing valve 10 and the enthalpy-increasing port of the compressor to reduce noise.
As shown in fig. 3, if the air conditioner includes two or more compressors 1 and each compressor 1 has an enthalpy increasing port, the air suction port of each compressor 1 is connected to the air discharge port of the first heating device 4 through a first exhaust valve 8, that is, the air suction port of each compressor 1 shares the first exhaust valve 8. The enthalpy-increasing ports of the compressors 1 are respectively connected to the second exhaust valve 9 through the enthalpy-increasing valves 10 corresponding to the enthalpy-increasing ports, so as to be connected with the exhaust port of the first heating device 4 through the second exhaust valve 9, i.e. the enthalpy-increasing ports of the compressors share the first exhaust valve 9. Whereby the connection between the compressor and the first heating means is achieved by a simple structure. Fig. 3 illustrates two compressors as an example, and the connection between two or more compressors is similar to this and will not be described again. With respect to the structure schematic shown in fig. 3, by controlling the opening and closing of the related valves, the gaseous refrigerant in the first heating device and the gaseous refrigerant in the second heating device can flow into the compressor from different air suction ports or enthalpy increasing ports, so as to compress the refrigerant.
As shown in fig. 4, if the air conditioner includes two or more compressors 1, and each compressor 1 does not have an enthalpy increasing port, the air suction port of each compressor 1 is connected to the air discharge port of the first heating device 4 through the corresponding first air discharge valve 8, that is, each compressor corresponds to one first air discharge valve 8. Fig. 4 illustrates two compressors as an example, and the connection between two or more compressors is similar to this and will not be described again. With respect to the configuration shown in fig. 4, the opening and closing of the valves can be controlled to control the flow of the refrigerant in the first heating device and the second heating device to different compressors, for example, some compressors draw air from the gas-liquid separator and some compressors draw air from the first heating device.
In an alternative embodiment, as shown in fig. 2 to 4, the air conditioner may further include: a supercooling means 11 and a second heating means 12. And a second heating device 12 provided on a connection pipe between the supercooling device 11 and the intake side of the compressor 1, for heating the refrigerant flowing from the supercooling device 11 to the compressor 1. Wherein the air intake side may include an air intake port and an enthalpy increasing port.
Further, an outlet of the second heating device 12 is connected to an air inlet port of the first heating device 4 through an air inlet valve 13, and is used for inputting the gaseous refrigerant heated by the second heating device 12 to the first heating device 4. The second heating device 12 may be electrically heated.
If the first heating device is not started, the second heating device heats the refrigerant and independently supplements air to the compressor; if the first heating device is started, the second heating device and the first heating device can supplement air to the compressor together, so that the refrigerant is circulated more sufficiently, and the heating capacity is improved.
The liquid inlet valve 6, the pressure balance valve 7, the first exhaust valve 8, the second exhaust valve 9, the enthalpy increasing valve 10 and the gas inlet valve 13 can be electromagnetic valves.
Example two
On the basis of the first embodiment, the present embodiment provides a control method for an air conditioner capable of continuously heating, which is applied to the air conditioner capable of continuously heating. As shown in fig. 5, the method includes:
s501, detecting that a defrosting condition is met, and controlling a first flow of gaseous refrigerant discharged by a compressor to flow into an outdoor heat exchanger through a defrosting branch to defrost.
And S502, controlling the gaseous refrigerant with the second flow rate discharged by the compressor to flow into the indoor heat exchanger for heating.
When defrosting is carried out, the high-temperature and high-pressure gaseous refrigerant discharged by the compressor is divided into two parts, the gaseous refrigerant with the first flow enters the outdoor heat exchanger through the defrosting branch to be condensed and defrosted, and the gaseous refrigerant with the second flow enters the indoor heat exchanger to be heated.
This embodiment utilizes and changes the frost branch road to change the frost with compressor exhaust part high temperature gaseous state refrigerant bypass to outdoor heat exchanger, and compressor exhaust another part high temperature gaseous state refrigerant gets into indoor heat exchanger and heats, guarantees from this that the in-process indoor unit that changes the frost continuously heats, guarantees that indoor environment temperature is stable, avoids bringing uncomfortable experience for the user.
Furthermore, the gaseous refrigerant with the first flow rate can flow into the outdoor heat exchanger by turning on a switch on the defrosting branch.
Optionally, after the defrosting condition is detected to be met, the method may further include: opening the first heating device and the liquid inlet valve, and introducing the liquid refrigerant separated by the gas-liquid separator into the first heating device through the liquid inlet valve for heating and evaporation; and opening a first exhaust valve connected with the air suction port of the compressor, and controlling the gaseous refrigerant in the first heating device to flow into the air suction port of the compressor.
The liquid refrigerant separated by the gas-liquid separator is heated by the first heating device, and the compressor is supplemented with air, so that the refrigerant in the system sufficiently participates in circulation, the air displacement of the compressor is increased, and the heating capacity in a low-temperature environment is improved. Simultaneously, utilize first heating device, can prevent that vapour and liquid separator from taking place the hydrops easily under the low temperature environment or frosting leads to the problem of the quick decay of unit heating capacity, has guaranteed the effect of heating.
If the compressor is provided with the enthalpy increasing port, after the first heating device and the liquid inlet valve are opened, the second exhaust valve and the enthalpy increasing valve which are connected with the enthalpy increasing port of the compressor need to be closed besides the first exhaust valve, and the correct flow direction of the refrigerant to the pipeline is ensured. Referring to fig. 2 and 3, if the air conditioner includes an enthalpy increasing branch, i.e., the section of the pipeline between the enthalpy increasing port of the compressor and the air-out bulb 65 of the supercooling means, the enthalpy increasing branch valve 63 is closed when defrosting is performed.
Optionally, after the first heating device and the liquid inlet valve are opened, the pressure balance valve can be opened at regular time. When the pressure balance valve is opened, the pressure between the gas-liquid separator and the first heating device is balanced, so that the liquid refrigerant of the gas-liquid separator can be introduced into the first heating device under the action of gravity under the condition of pressure balance; when the pressure balance valve is closed, the first heating device heats, so that the pressure in the first heating device is unequal to the pressure in the gas-liquid separator, two low pressures are formed in the first heating device and the outdoor heat exchanger, the two low pressures are not affected with each other, refrigerants are evaporated in the two low pressures, the heat exchange performance of the outdoor heat exchanger is improved, and the heating capacity in a low-temperature environment is improved.
Optionally, after the first heating device and the liquid inlet valve are opened, the method may further include: and opening the second heating device and the air inlet valve, so that the refrigerant output to the compressor by the supercooling device is heated by the second heating device, flows into the first heating device through the air inlet valve, is mixed with the gaseous refrigerant in the first heating device and then flows into the compressor.
This optional implementation mode combines first heating device and second heating device for the refrigerant fully circulates, improves the heating capacity.
In an optional embodiment, the method may further include: receiving a double low pressure heating instruction; closing a switch on the defrosting branch, starting the first heating device and the liquid inlet valve, and introducing the liquid refrigerant separated by the gas-liquid separator into the first heating device through the liquid inlet valve for heating; if the compressor is provided with an enthalpy increasing port, closing a first exhaust valve connected with an air suction port of the compressor; and opening a second exhaust valve and an enthalpy increasing valve which are connected with the enthalpy increasing port of the compressor, and controlling the gaseous refrigerant in the first heating device to flow into the enthalpy increasing port of the compressor. Referring to fig. 2 and 3, if the air conditioner includes an enthalpy increasing branch, i.e., the section of the pipeline between the enthalpy increasing port of the compressor and the air-out bulb 65 of the supercooling means, the enthalpy increasing branch valve 63 is closed when the double low pressure heating is performed.
If the compressor does not have an enthalpy-increasing port, opening a first exhaust valve corresponding to at least one compressor, specifically, if the air conditioner only comprises one compressor, opening a first exhaust valve connected with an air suction port of the compressor; if the air conditioner comprises two or more than two compressors, and the air suction port of each compressor is connected with the respective first exhaust valve, at least one first exhaust valve is opened, the refrigerant is ensured to be fully circulated in the double-low pressing heat process, and the heating capacity is improved.
The double low pressures are two low pressures formed in the first heating device and the outdoor heat exchanger respectively, the two low pressures are not mutually influenced, part of refrigerants absorb heat and are evaporated in the outdoor heat exchanger, and part of refrigerants absorb heat and are evaporated in the first heating device, so that the heat exchange performance of the outdoor heat exchanger is improved, and the heating capacity in a low-temperature environment is improved.
Under the double-low pressure heating mode, after the first heating device and the liquid inlet valve are opened, the pressure balance valve can be opened at regular time, so that the existence of double low pressure and the liquid refrigerant in the gas-liquid separator can be ensured to smoothly enter the first heating device.
Optionally, in the dual low pressure heating mode, after the first heating device and the liquid inlet valve are opened, the method may further include: and opening the second heating device and the air inlet valve, so that the refrigerant output to the compressor by the supercooling device is heated by the second heating device, flows into the first heating device through the air inlet valve, is mixed with the gaseous refrigerant in the first heating device and then flows into the compressor. The first heating device and the second heating device are combined, so that the refrigerant is circulated more sufficiently, and the heating capacity is improved.
EXAMPLE III
Based on the same inventive concept, the present embodiment provides an air conditioner control device capable of continuously heating, which can be used to implement the air conditioner control method capable of continuously heating described in the above embodiments. The device may be implemented by software and/or hardware, and may be generally integrated into a controller of an air conditioner. The device includes:
the first control module is used for detecting that the defrosting condition is met and controlling a first flow of gaseous refrigerant discharged by the compressor to flow into the outdoor heat exchanger through the defrosting branch to be defrosted;
and the second control module is used for controlling the gaseous refrigerant with the second flow rate discharged by the compressor to flow into the indoor heat exchanger for heating.
Specifically, the first control module is specifically configured to: and opening a switch on the defrosting branch so that the gaseous refrigerant with the first flow rate flows into the outdoor heat exchanger.
Optionally, the apparatus further comprises: the third control module is used for starting the first heating device and the liquid inlet valve after the defrosting condition is met, and introducing the liquid refrigerant separated by the gas-liquid separator into the first heating device through the liquid inlet valve for heating; and opening a first exhaust valve connected with the air suction port of the compressor, and controlling the gaseous refrigerant in the first heating device to flow into the air suction port of the compressor.
Optionally, the apparatus further comprises: and the fourth control module is used for closing the second exhaust valve and the enthalpy increasing valve which are connected with the enthalpy increasing port of the compressor if the compressor is provided with the enthalpy increasing port after the first heating device and the liquid inlet valve are opened.
Optionally, the apparatus further comprises:
the receiving module is used for receiving a double-low pressure heating instruction;
the fifth control module is used for closing a switch on the defrosting branch, starting the first heating device and the liquid inlet valve, and introducing the liquid refrigerant separated by the gas-liquid separator into the first heating device through the liquid inlet valve for heating;
and the sixth control module is used for closing the first exhaust valve connected with the air suction port of the compressor, opening the second exhaust valve connected with the enthalpy-increasing port of the compressor and the enthalpy-increasing valve and controlling the gaseous refrigerant in the first heating device to flow into the enthalpy-increasing port of the compressor if the compressor is provided with the enthalpy-increasing port.
Optionally, the sixth control module is further configured to: and if the compressor does not have the enthalpy increasing port, opening a first exhaust valve corresponding to at least one compressor.
Optionally, the apparatus further comprises: and the seventh control module is used for opening the pressure balance valve at regular time after the first heating device and the liquid inlet valve are opened.
Optionally, the apparatus further comprises: and the eighth control module is used for opening the second heating device and the air inlet valve after opening the first heating device and the liquid inlet valve, so that the refrigerant output to the compressor by the supercooling device flows into the first heating device through the air inlet valve after being heated by the second heating device, and flows into the compressor after being mixed with the gaseous refrigerant in the first heating device.
The device can execute the method provided by the embodiment of the invention, and has the corresponding functional modules and beneficial effects of the execution method. For technical details that are not described in detail in this embodiment, reference may be made to the method provided by the embodiment of the present invention.
Example four
The present embodiment provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements a method of controlling an air conditioner that can continuously generate heat according to any of the embodiments of the present invention.
EXAMPLE five
The present embodiment provides an electronic device, including:
one or more processors;
a memory for storing one or more programs, which when executed by the one or more processors, cause the one or more processors to implement the method for controlling an air conditioner capable of continuously heating according to any embodiment of the present invention.
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 examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (23)
1. An air conditioner, includes compressor and outdoor heat exchanger, its characterized in that, the air conditioner still includes:
and one end of the defrosting branch is connected to the exhaust side of the compressor, and the other end of the defrosting branch is connected to the outdoor heat exchanger and used for bypassing part of gaseous refrigerant discharged by the compressor to the outdoor heat exchanger for defrosting in a defrosting mode.
2. The air conditioner of claim 1, wherein a switch is disposed on the defrosting branch.
3. The air conditioner according to claim 1, further comprising:
and the first heating device is respectively connected with the gas-liquid separator and the compressor and used for heating the liquid refrigerant separated by the gas-liquid separator and enabling the heated gaseous refrigerant to flow into the compressor.
4. The air conditioner according to claim 3, wherein the first heating device comprises: a housing part and a heating part,
the accommodating component is used for accommodating liquid refrigerants introduced from the gas-liquid separator;
the heating part is used for heating the liquid refrigerant in the accommodating part.
5. The air conditioner as claimed in claim 3, wherein the first heating device is provided with a liquid inlet port connected to the gas-liquid separator through a liquid inlet valve for introducing the liquid refrigerant from the gas-liquid separator into the first heating device.
6. The air conditioner according to claim 3, wherein the first heating device is provided with a pressure balancing port connected to a gas outlet of the gas-liquid separator through a pressure balancing valve for balancing pressure between the gas-liquid separator and the first heating device.
7. The air conditioner as claimed in claim 3, wherein the first heating device is provided with an exhaust port connected to the compressor for feeding the gaseous refrigerant in the first heating device into the compressor.
8. The air conditioner of claim 7, wherein the discharge port is connected to a suction port of the compressor through a first discharge valve.
9. The air conditioner of claim 8, wherein if the compressor is provided with an enthalpy increasing port, the exhaust port is connected to the enthalpy increasing port of the compressor through a second exhaust valve and an enthalpy increasing valve in sequence.
10. The air conditioner according to claim 9, wherein if the air conditioner includes two or more compressors each having an enthalpy increasing port, an air suction port of each compressor is connected to an air discharge port of the first heating device through the first air discharge valve;
the enthalpy increasing ports of the compressors are respectively connected to the second exhaust valve through the enthalpy increasing valves corresponding to the enthalpy increasing ports, so that the enthalpy increasing ports are connected with the exhaust port of the first heating device through the second exhaust valve.
11. The air conditioner of claim 8, wherein if the air conditioner comprises two or more compressors, and each of the compressors is not provided with an enthalpy increasing port, the suction port of each of the compressors is connected to the exhaust port of the first heating device through a corresponding first exhaust valve.
12. The air conditioner according to any one of claims 1 to 11, further comprising: a supercooling means and a second heating means,
the second heating device is arranged on a connecting pipeline between the supercooling device and the air inlet side of the compressor and is used for heating the refrigerant flowing to the compressor from the supercooling device.
13. The air conditioner according to claim 12, wherein an outlet of the second heating device is connected to an air inlet of the first heating device through an air inlet valve, for inputting the gaseous refrigerant heated by the second heating device to the first heating device.
14. An air conditioner control method applied to the air conditioner of any one of claims 1 to 13, characterized by comprising:
when the condition that the defrosting condition is met is detected, controlling the gaseous refrigerant with the first flow rate discharged by the compressor to flow into the outdoor heat exchanger through the defrosting branch to be defrosted;
and controlling the gaseous refrigerant with the second flow rate discharged by the compressor to flow into the indoor heat exchanger for heating.
15. The method as claimed in claim 14, wherein the controlling of the first flow rate of the gaseous refrigerant discharged from the compressor to flow into the outdoor heat exchanger through the defrosting branch for defrosting comprises:
and opening a switch on the defrosting branch so that the gaseous refrigerant with the first flow rate flows into the outdoor heat exchanger.
16. The method of claim 14, after detecting that a defrost condition is met, further comprising:
opening a first heating device and a liquid inlet valve, and introducing the liquid refrigerant separated by the gas-liquid separator into the first heating device through the liquid inlet valve for heating;
and opening a first exhaust valve connected with the air suction port of the compressor, and controlling the gaseous refrigerant in the first heating device to flow into the air suction port of the compressor.
17. The method of claim 16, further comprising, after opening the first heating device and the intake valve:
and if the compressor is provided with the enthalpy increasing port, closing a second exhaust valve and an enthalpy increasing valve which are connected with the enthalpy increasing port of the compressor.
18. The method of claim 14, further comprising:
receiving a double low pressure heating instruction;
closing a switch on the defrosting branch, starting a first heating device and a liquid inlet valve, and introducing the liquid refrigerant separated by the gas-liquid separator into the first heating device through the liquid inlet valve for heating;
if the compressor is provided with an enthalpy increasing port, closing a first exhaust valve connected with an air suction port of the compressor, opening a second exhaust valve connected with the enthalpy increasing port of the compressor and the enthalpy increasing valve, and controlling the gaseous refrigerant in the first heating device to flow into the enthalpy increasing port of the compressor.
19. The method of claim 18, wherein if the compressor does not have an enthalpy-increasing port, opening a first exhaust valve corresponding to at least one compressor.
20. The method of claim 16 or 18, further comprising, after opening the first heating device and the intake valve:
and opening the pressure balance valve at regular time.
21. The method of claim 16 or 18, further comprising, after opening the first heating device and the intake valve:
and opening a second heating device and an air inlet valve, so that the refrigerant output to the compressor by the supercooling device is heated by the second heating device, flows into the first heating device through the air inlet valve, is mixed with the gaseous refrigerant in the first heating device, and flows into the compressor.
22. A computer-readable storage medium, on which a computer program is stored, which program, when being executed by a processor, carries out the method according to any one of claims 14 to 21.
23. An electronic device, comprising:
one or more processors;
memory for storing one or more programs that, when executed by the one or more processors, cause the one or more processors to implement the method of any of claims 14-21.
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| CN202020214741.0U CN211739591U (en) | 2019-10-23 | 2020-02-26 | Air conditioning system and air conditioning equipment that incessant heats |
| CN202020213405.4U CN211739588U (en) | 2019-10-23 | 2020-02-26 | Air conditioner capable of improving heat exchange performance |
| CN202010120876.5A CN111102770A (en) | 2019-10-23 | 2020-02-26 | Air conditioning system capable of continuously heating |
| CN202010120879.9A CN111102771A (en) | 2019-10-23 | 2020-02-26 | Air conditioning system and control method thereof |
| CN202010121467.7A CN111102772B (en) | 2019-10-23 | 2020-02-26 | Oil return system for low-temperature continuous heating, oil return control method and air conditioning equipment |
| CN202020214766.0U CN211739592U (en) | 2019-10-23 | 2020-02-26 | Air conditioning system capable of continuously heating |
| CN202010120896.2A CN111121353A (en) | 2019-10-23 | 2020-02-26 | Air conditioner capable of improving heat exchange performance and control method thereof |
| CN202020214004.0U CN211739590U (en) | 2019-10-23 | 2020-02-26 | Oil return system for low-temperature continuous heating and air conditioning equipment |
| CN202020213424.7U CN211739589U (en) | 2019-10-23 | 2020-02-26 | Air conditioning system |
| CN202020214742.5U CN211876449U (en) | 2019-10-23 | 2020-02-26 | Circulating system capable of continuously heating and air conditioner |
| CN202010121492.5A CN111102773A (en) | 2019-10-23 | 2020-02-26 | Circulating system capable of continuously heating, control method thereof and air conditioner |
| CN202010121494.4A CN111102774B (en) | 2019-10-23 | 2020-02-26 | Uninterrupted heating air conditioning system, control method thereof and air conditioning equipment |
| CN202010318282.5A CN111288694A (en) | 2019-10-23 | 2020-04-21 | Air conditioner capable of continuously heating and control method thereof |
| PCT/CN2020/138810 WO2021169539A1 (en) | 2019-10-23 | 2020-12-24 | Circulation system and control method and device therefor, and air conditioner |
| PCT/CN2020/139031 WO2021169541A1 (en) | 2019-10-23 | 2020-12-24 | Air conditioning system and control method therefor |
| PCT/CN2020/139037 WO2021169542A1 (en) | 2019-10-23 | 2020-12-24 | Air conditioning system capable of performing continuous heating |
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| 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 |
| CN202020214004.0U Active CN211739590U (en) | 2019-10-23 | 2020-02-26 | Oil return system for low-temperature continuous heating and air conditioning equipment |
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| CN202010120879.9A Pending CN111102771A (en) | 2019-10-23 | 2020-02-26 | Air conditioning system and control method thereof |
| CN202010120896.2A Pending CN111121353A (en) | 2019-10-23 | 2020-02-26 | Air conditioner capable of improving heat exchange performance and control method thereof |
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| CN202020214741.0U Active CN211739591U (en) | 2019-10-23 | 2020-02-26 | Air conditioning system and air conditioning equipment that incessant heats |
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| 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 |
| CN202020214004.0U Active CN211739590U (en) | 2019-10-23 | 2020-02-26 | Oil return system for low-temperature continuous heating and air conditioning equipment |
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| CN109442788B (en) * | 2018-10-08 | 2021-02-23 | 珠海格力电器股份有限公司 | Defrosting method of air conditioner and air conditioner |
| CN109386909B (en) * | 2018-10-22 | 2020-10-16 | 广东美的暖通设备有限公司 | Outdoor unit, oil return control method and air conditioner |
| CN109798701B (en) * | 2019-03-21 | 2023-09-12 | 珠海格力电器股份有限公司 | Air conditioner control system and method for continuous heating and air conditioner |
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2019
- 2019-10-23 CN CN201911013492.7A patent/CN110645745A/en active Pending
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2020
- 2020-02-26 CN CN202020214742.5U patent/CN211876449U/en active Active
- 2020-02-26 CN CN202020214766.0U patent/CN211739592U/en active Active
- 2020-02-26 CN CN202010121467.7A patent/CN111102772B/en active Active
- 2020-02-26 CN CN202020214004.0U patent/CN211739590U/en active Active
- 2020-02-26 CN CN202020213424.7U patent/CN211739589U/en active Active
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- 2020-04-21 CN CN202010318282.5A patent/CN111288694A/en active Pending
- 2020-12-24 WO PCT/CN2020/139031 patent/WO2021169541A1/en active Application Filing
- 2020-12-24 WO PCT/CN2020/139037 patent/WO2021169542A1/en active Application Filing
- 2020-12-24 WO PCT/CN2020/138810 patent/WO2021169539A1/en active Application Filing
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111981653A (en) * | 2020-08-18 | 2020-11-24 | 海信（山东）空调有限公司 | Defrosting control method for air conditioner |
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| CN114719401A (en) * | 2022-04-18 | 2022-07-08 | 青岛海尔空调电子有限公司 | Air conditioner control method, system, device, medium and air conditioner |
| CN114992780A (en) * | 2022-05-18 | 2022-09-02 | 珠海格力电器股份有限公司 | Air conditioning system and control method thereof |
| CN115289604A (en) * | 2022-08-12 | 2022-11-04 | 珠海格力电器股份有限公司 | Heating overload protection method and device and air conditioner |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021169542A1 (en) | 2021-09-02 |
| CN211739591U (en) | 2020-10-23 |
| CN111102771A (en) | 2020-05-05 |
| CN111102774A (en) | 2020-05-05 |
| CN211739588U (en) | 2020-10-23 |
| CN111102772B (en) | 2024-03-08 |
| CN111102772A (en) | 2020-05-05 |
| WO2021169541A1 (en) | 2021-09-02 |
| CN111102770A (en) | 2020-05-05 |
| CN211739592U (en) | 2020-10-23 |
| CN111288694A (en) | 2020-06-16 |
| CN211876449U (en) | 2020-11-06 |
| CN211739589U (en) | 2020-10-23 |
| CN211739590U (en) | 2020-10-23 |
| WO2021169539A1 (en) | 2021-09-02 |
| CN111102774B (en) | 2024-03-08 |
| CN111121353A (en) | 2020-05-08 |
| CN111102773A (en) | 2020-05-05 |
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