CN110617644A - Heat exchange system, air conditioner and control method of air conditioner - Google Patents
Heat exchange system, air conditioner and control method of air conditioner Download PDFInfo
- Publication number
- CN110617644A CN110617644A CN201910995507.8A CN201910995507A CN110617644A CN 110617644 A CN110617644 A CN 110617644A CN 201910995507 A CN201910995507 A CN 201910995507A CN 110617644 A CN110617644 A CN 110617644A
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- heat exchange
- exchange system
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000010438 heat treatment Methods 0.000 claims abstract description 56
- 239000003507 refrigerant Substances 0.000 claims description 68
- 238000005057 refrigeration Methods 0.000 claims description 21
- 238000001816 cooling Methods 0.000 claims description 15
- 230000004087 circulation Effects 0.000 description 16
- 239000007788 liquid Substances 0.000 description 15
- 238000010257 thawing Methods 0.000 description 14
- 238000004378 air conditioning Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 10
- 238000012546 transfer Methods 0.000 description 6
- 238000005192 partition Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 4
- 238000004134 energy conservation Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
-
- 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
-
- 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
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
-
- 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
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
- F24F11/67—Switching between heating and cooling modes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B13/00—Compression machines, plants or systems, with reversible cycle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
-
- 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
- F25B47/006—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass for preventing frost
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2240/00—Components
- F04C2240/10—Stators
-
- 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
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/021—Indoor unit or outdoor unit with auxiliary heat exchanger not forming part of the indoor or outdoor unit
- F25B2313/0211—Indoor unit or outdoor unit with auxiliary heat exchanger not forming part of the indoor or outdoor unit the auxiliary heat exchanger being only used during defrosting
-
- 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
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/027—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means
- F25B2313/02743—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means using three four-way valves
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Signal Processing (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention provides a heat exchange system, an air conditioner and a control method of the air conditioner. The heat exchange system comprises a compressor; the heat exchange systems are communicated with the compressor and have independent heat exchange modes, the heat exchange modes comprise a heating mode and a refrigerating mode, and the heat exchange systems comprise at least one main heat exchange system and at least one auxiliary heat exchange system; the auxiliary heat exchange system and the main heat exchange system are arranged adjacently, the heat exchange mode of the auxiliary heat exchange system and the heat exchange mode of the main heat exchange system can be the same or opposite, and when the heat exchange mode of the auxiliary heat exchange system is opposite to the heat exchange mode of the main heat exchange system, the auxiliary heat exchange system and the main heat exchange system perform heat exchange operation to prevent the main heat exchange system from frosting. The practicability of the heat exchange system is improved, the air conditioner with the heat exchange system realizes the defrosting-free step, the performance of the air conditioner is effectively improved, and the use experience of a user is improved.
Description
Technical Field
The invention relates to the technical field of air conditioner equipment, in particular to a heat exchange system, an air conditioner and a control method of the air conditioner.
Background
At present, when the air temperature of a household air conditioner on the market is low or below zero in winter, the air conditioner frosts, the heat exchange efficiency of an outdoor heat exchanger is gradually reduced along with the aggravation of frosting, the energy efficiency of the air conditioner is reduced, in addition, the outdoor heat exchanger needs to be defrosted when frosting reaches a certain degree, the machine needs to be stopped when defrosted, the defrosting time is generally 5-10 minutes, the heating effect is obviously reduced, the air conditioner is unstable in operation, the energy efficiency in the heating season is greatly reduced, and the requirements of energy conservation and emission reduction are not met.
Disclosure of Invention
The invention mainly aims to provide a heat exchange system, an air conditioner and a control method of the air conditioner, and aims to solve the problem that the heat exchange efficiency of the air conditioner is low in the prior art.
In order to achieve the above object, according to one aspect of the present invention, there is provided a heat exchange system comprising: a compressor; the heat exchange systems are communicated with the compressor and have independent heat exchange modes, the heat exchange modes comprise a heating mode and a refrigerating mode, and the heat exchange systems comprise at least one main heat exchange system and at least one auxiliary heat exchange system; the auxiliary heat exchange system and the main heat exchange system are arranged adjacently, the heat exchange mode of the auxiliary heat exchange system and the heat exchange mode of the main heat exchange system can be the same or opposite, and when the heat exchange mode of the auxiliary heat exchange system is opposite to the heat exchange mode of the main heat exchange system, the auxiliary heat exchange system and the main heat exchange system perform heat exchange operation to prevent the main heat exchange system from frosting.
Further, the compressor has a plurality of working chambers, and a plurality of working chambers include first working chamber, and the main heat transfer system includes: the first end of the first outdoor heat exchanger is selectively communicated with a first exhaust pipe of the compressor or a suction port of the first working cavity, and the first exhaust pipe is communicated with an exhaust port of the first working cavity; and the first end of the first indoor heat exchanger is communicated with the second end of the first outdoor heat exchanger, and the second end of the first indoor heat exchanger is selectively communicated with the first exhaust pipe or the suction port of the first working cavity.
Further, one of the first end of the first outdoor heat exchanger and the second end of the first indoor heat exchanger is selectively communicated with the first exhaust pipe through the first four-way valve, and the other one of the first end of the first outdoor heat exchanger and the second end of the first indoor heat exchanger is selectively communicated with the suction port of the first working chamber through the first four-way valve.
Further, a plurality of working chambers include the second working chamber, and the second working chamber sets up independently with first working chamber, and supplementary heat transfer system includes: the first end of the second outdoor heat exchanger is selectively communicated with a second exhaust pipe of the compressor or a suction port of the second working cavity, and the second exhaust pipe is communicated with an exhaust port of the second working cavity; and the first end of the second indoor heat exchanger is communicated with the second end of the second outdoor heat exchanger, and the second end of the second indoor heat exchanger is selectively communicated with the second exhaust pipe or the suction port of the second working cavity.
Further, one of the first end of the second outdoor heat exchanger and the second end of the second indoor heat exchanger is selectively communicated with the second exhaust pipe through a second four-way valve, and the other one of the first end of the second outdoor heat exchanger and the second end of the second indoor heat exchanger is selectively communicated with the suction port of the second working chamber through a second four-way valve.
Further, a second outdoor heat exchanger is disposed adjacent to the first outdoor heat exchanger, and a second indoor heat exchanger is disposed adjacent to the first indoor heat exchanger.
Further, a plurality of working chambers include the third working chamber, and the third working chamber sets up independently with first working chamber, second working chamber, and a plurality of heat transfer systems still include third heat transfer system, and third heat transfer system includes: the first end of the third outdoor heat exchanger is selectively communicated with a third exhaust pipe of the compressor or an air suction port of the third working cavity, and the third exhaust pipe is communicated with an air exhaust port of the third working cavity; and the first end of the third indoor heat exchanger is communicated with the second end of the third outdoor heat exchanger, and the second end of the third indoor heat exchanger is selectively communicated with a third exhaust pipe or a suction port of the third working cavity.
Further, the second outdoor heat exchanger is located between the third outdoor heat exchanger and the first outdoor heat exchanger, and the second indoor heat exchanger is located between the first indoor heat exchanger and the third indoor heat exchanger.
Further, one of the first end of the third outdoor heat exchanger and the second end of the third indoor heat exchanger is selectively communicated with the third exhaust pipe through a third four-way valve, and the other one of the first end of the third outdoor heat exchanger and the second end of the third indoor heat exchanger is selectively communicated with the suction port of the third working chamber through a third four-way valve.
Further, the compressor has a pump body subassembly, and pump body subassembly includes cylinder, well cylinder and lower cylinder, and wherein, go up the cylinder and be provided with first working chamber, well cylinder is provided with the second working chamber, and lower cylinder is provided with the third working chamber.
Further, the heat exchange mode of the third heat exchange system is synchronously set with the heat exchange mode of the main heat exchange system.
Furthermore, the exhaust gas quantity of the auxiliary heat exchange system is V1, and the exhaust gas quantity of the main heat exchange system is V2, wherein V1/V2 is more than or equal to 2 and less than or equal to 5.
Further, when the temperature and the pressure of the first outdoor heat exchanger and/or the first indoor heat exchanger reach preset values after the main heat exchange system operates for a preset time, the heat exchange mode of the auxiliary heat exchange system is controlled to be opposite to the heat exchange mode of the main heat exchange system.
According to another aspect of the present invention, an air conditioner is provided, which includes a heat exchange system, wherein the heat exchange system is the above-mentioned heat exchange system.
According to another aspect of the present invention, there is provided a control method of an air conditioner, the method for controlling the air conditioner, the method comprising the steps of: when the main heat exchange system is in a refrigeration mode, controlling the auxiliary heat exchange system to be in the refrigeration mode so that the flow direction of a refrigerant of the auxiliary heat exchange system is the same as that of the refrigerant of the main heat exchange system; when the main heat exchange system is in a heating mode under a high-temperature working condition, the auxiliary heat exchange system is controlled to be in the heating mode, so that the refrigerant flow direction of the auxiliary heat exchange system is the same as that of the main heat exchange system.
Further, the method comprises the following steps: when the main heat exchange system is in a heating mode under a low-temperature working condition, the auxiliary heat exchange system is controlled to be in a cooling mode, so that the flow direction of a refrigerant of the auxiliary heat exchange system is opposite to the flow direction of the refrigerant of the main heat exchange system, or when the main heat exchange system is in the heating mode under the low-temperature working condition, the auxiliary heat exchange system is controlled to be in the heating mode to operate for preset time, whether the temperature and the pressure of the refrigerant of the main heat exchange system reach preset values or not is periodically detected, when the temperature and the pressure of the refrigerant of the main heat exchange system reach the preset values, the auxiliary heat exchange system is controlled to be switched to the cooling mode to operate for preset time until the temperature and the pressure of the refrigerant of the main heat exchange system are outside the.
Further, the method comprises the following steps: and controlling the heat exchange mode of the third heat exchange system to be the same as that of the main heat exchange system.
Further, the temperature under the high temperature condition is greater than or equal to 2 degrees, and/or the temperature under the low temperature condition is less than 2 degrees.
By applying the technical scheme of the invention, the heat exchange efficiency of the heat exchange system can be effectively improved by setting the heat exchange mode of the auxiliary heat exchange system to be the same as that of the main heat exchange system and setting the heat exchange mode of the auxiliary heat exchange system to be opposite to that of the main heat exchange system. Especially, when the heat exchange mode of the auxiliary heat exchange system is opposite to that of the main heat exchange system, the frosting of the heat exchange system can be avoided, the practicability of the heat exchange system is further improved, the defrosting-free step of the air conditioner with the heat exchange system is realized, the performance of the air conditioner is effectively improved, and the use experience of a user is improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 shows a schematic cycle diagram of an embodiment of a normal heating mode of a heat exchange system according to the present invention;
FIG. 2 shows a cycle schematic of an embodiment of a heating defrost mode of a heat exchange system according to the present invention;
FIG. 3 shows a schematic cycle diagram of an embodiment of the refrigeration mode of the heat exchange system according to the present invention;
FIG. 4 shows a schematic cycle diagram of an embodiment of a compressor according to the present invention;
figure 5 shows a schematic cycle diagram of an embodiment of the pump body assembly according to the invention.
Wherein the figures include the following reference numerals:
1. a compressor; 2. a first four-way valve; 3. a second four-way valve; 4. a third four-way valve; 5. a first outdoor heat exchanger; 6. a second outdoor heat exchanger; 7. a third outdoor heat exchanger; 8. a first electronic expansion valve; 9. a second electronic expansion valve; 10. a third electronic expansion valve; 11. a first indoor heat exchanger; 12. a second indoor heat exchanger; 13. a third indoor heat exchanger;
20. a housing assembly; 21. a third liquid distributor; 22. a second liquid separator; 23. a first liquid separator; 24. a motor; 25. an upper cover assembly; 26. a first exhaust pipe; 27. a pump body assembly; 28. a second exhaust pipe; 29. a third exhaust pipe;
30. a crankshaft; 31. an upper flange assembly; 32. an upper cylinder; 33. a first separator; 34. a second baffle plate assembly; 35. a middle cylinder; 36. a third partition plate; 37. a lower cylinder; 38. a lower flange assembly; 39. a lower flange cover plate;
40. the control valve is electrically operated.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above 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 terms so used are interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Exemplary embodiments according to the present application will now be described in more detail with reference to the accompanying drawings. These exemplary embodiments may, however, be embodied in many different forms and should not be construed as limited to only the embodiments set forth herein. It is to be understood that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art, in the drawings, it is possible to enlarge the thicknesses of layers and regions for clarity, and the same devices are denoted by the same reference numerals, and thus the description thereof will be omitted.
Referring to fig. 1 to 5, according to an embodiment of the present invention, a heat exchange system is provided.
Specifically, as shown in fig. 1 to 3, the heat exchange system includes a compressor 1 and a heat exchange system. The heat exchange systems are multiple and communicated with the compressor 1, the heat exchange systems are all provided with independent heat exchange modes, the heat exchange modes comprise a heating mode and a refrigerating mode, and the heat exchange systems comprise at least one main heat exchange system and at least one auxiliary heat exchange system. The auxiliary heat exchange system and the main heat exchange system are arranged adjacently, the heat exchange mode of the auxiliary heat exchange system and the heat exchange mode of the main heat exchange system can be the same or opposite, and when the heat exchange mode of the auxiliary heat exchange system is opposite to the heat exchange mode of the main heat exchange system, the auxiliary heat exchange system and the main heat exchange system perform heat exchange operation to prevent the main heat exchange system from frosting.
In this embodiment, the heat exchange efficiency of the heat exchange system can be effectively improved by setting the heat exchange mode of the auxiliary heat exchange system to be the same as or opposite to the heat exchange mode of the main heat exchange system. Especially, when the heat exchange mode of the auxiliary heat exchange system is opposite to that of the main heat exchange system, the frosting of the heat exchange system can be avoided, the practicability of the heat exchange system is further improved, the defrosting-free step of the air conditioner with the heat exchange system is realized, the performance of the air conditioner is effectively improved, and the use experience of a user is improved. Wherein, the heat exchange modes are opposite or the same, and refer to that: when the main heat exchange system is in a heating mode, the heat exchange mode of the auxiliary heat exchange system can be a heating mode or a cooling mode.
Wherein, compressor 1 has a plurality of working chambers, and a plurality of working chambers include first working chamber, and the main heat transfer system includes first outdoor heat exchanger 5 and first indoor heat exchanger 11. The first end of the first outdoor heat exchanger 5 is selectively communicated with the first exhaust pipe 26 of the compressor 1 or the suction port of the first working chamber. The first exhaust pipe 26 communicates with the exhaust port of the first working chamber. A first end of the first indoor heat exchanger 11 communicates with a second end of the first outdoor heat exchanger 5, and a second end of the first indoor heat exchanger 11 selectively communicates with the first exhaust pipe 26 or the suction port of the first working chamber. The arrangement enables the main heat exchange system to independently realize the switching between the heating mode and the cooling mode. Specifically, one of the first end of the first outdoor heat exchanger 5 and the second end of the first indoor heat exchanger 11 is selectively communicated with the first exhaust pipe 26 through the first four-way valve 2, and the other one of the first end of the first outdoor heat exchanger 5 and the second end of the first indoor heat exchanger 11 is selectively communicated with the suction port of the first working chamber through the first four-way valve 2.
Further, the plurality of working chambers includes a second working chamber. The second working chamber is arranged independently of the first working chamber and the auxiliary heat exchange system comprises a second outdoor heat exchanger 6 and a second indoor heat exchanger 12. The first end of the second outdoor heat exchanger 6 is selectively communicated with the second discharge pipe 28 of the compressor 1 or the suction port of the second working chamber. A second exhaust duct 28 communicates with the exhaust of the second working chamber. A first end of the second indoor heat exchanger 12 communicates with a second end of the second outdoor heat exchanger 6. A second end of the second indoor heat exchanger 12 is selectively in communication with the second exhaust duct 28 or the suction port of the second working chamber. The arrangement is such that the auxiliary heat exchange system can realize the switching between the cooling mode and the heating mode independently. Specifically, one of the first end of the second outdoor heat exchanger 6 and the second end of the second indoor heat exchanger 12 is selectively communicated with the second exhaust duct 28 through the second four-way valve 3, and the other of the first end of the second outdoor heat exchanger 6 and the second end of the second indoor heat exchanger 12 is selectively communicated with the suction port of the second working chamber through the second four-way valve 3.
Wherein the second outdoor heat exchanger 6 is disposed adjacent to the first outdoor heat exchanger 5, and the second indoor heat exchanger 12 is disposed adjacent to the first indoor heat exchanger 11. The arrangement can improve the heat exchange performance of the heat exchange system.
Further, the plurality of working chambers include a third working chamber, and the third working chamber is independently provided from the first working chamber and the second working chamber. The plurality of heat exchange systems further comprises a third heat exchange system comprising a third outdoor heat exchanger 7 and a third indoor heat exchanger 13. The first end of the third outdoor heat exchanger 7 is optionally in communication with a third discharge duct 29 of the compressor 1 or the suction opening of the third working chamber. The third exhaust duct 29 communicates with the exhaust port of the third working chamber. A first end of the third indoor heat exchanger 13 communicates with a second end of the third outdoor heat exchanger 7, and a second end of the third indoor heat exchanger 13 may alternatively communicate with the third exhaust duct 29 or the suction opening of the third working chamber. The third heat exchange system is used as another main heat exchange system, and the heat exchange modes of the heat exchange systems used as the main heat exchange systems are always the same. The arrangement can improve the heat exchange performance of the heat exchange system.
Wherein the second outdoor heat exchanger 6 is located between the third outdoor heat exchanger 7 and the first outdoor heat exchanger 5, and the second indoor heat exchanger 12 is located between the first indoor heat exchanger 11 and the third indoor heat exchanger 13. Of course, in this embodiment, the heat exchangers of the heat exchange systems may be arranged in a staggered manner, or may be arranged side by side, and the heat exchanger serving as the auxiliary heat exchange system may be placed inside other heat exchangers, or may be located outside other heat exchangers.
Further, one of the first end of the third outdoor heat exchanger 7 and the second end of the third indoor heat exchanger 13 is selectively communicated with the third exhaust duct 29 through the third four-way valve 4, and the other one of the first end of the third outdoor heat exchanger 7 and the second end of the third indoor heat exchanger 13 is selectively communicated with the suction port of the third working chamber through the third four-way valve 4. The arrangement enables the third heat exchange system to realize a cooling mode and a heating mode independently. Wherein the heat exchange mode of the third heat exchange system is synchronously set with the heat exchange mode of the main heat exchange system.
In the present embodiment, the compressor 1 has a pump body assembly 27. The pump block assembly 27 includes an upper cylinder 32, a middle cylinder 35, and a lower cylinder 37. Wherein the upper cylinder 32 is provided with a first working chamber, the middle cylinder 35 is provided with a second working chamber, and the lower cylinder 37 is provided with a third working chamber. The arrangement enables the requirements of a plurality of heat exchange systems to be met only by one compressor, and the cost of the heat exchange systems is effectively reduced.
Preferably, the exhaust gas quantity of the auxiliary heat exchange system is V1, and the exhaust gas quantity of the main heat exchange system is V2, wherein 2 is less than or equal to V1/V2 is less than or equal to 5. The arrangement can ensure that when the heat exchange mode of the main heat exchange system is opposite to that of the auxiliary heat exchange system, the heat of the auxiliary heat exchange system is enough to fulfill the aim of defrosting without influencing the heat exchange efficiency of the main heat exchange system. Specifically, when the temperature and the pressure of the first outdoor heat exchanger 5 and the first indoor heat exchanger 11 reach preset values after the main heat exchange system operates for a preset time, the heat exchange mode of the auxiliary heat exchange system is controlled to be opposite to the heat exchange mode of the main heat exchange system.
The heat exchange system can also be used in the technical field of air conditioners, that is, according to another aspect of the present invention, an air conditioner is provided, which includes the heat exchange system in the above embodiment. In the air conditioner, only one fan part is arranged at the heat exchanger of the indoor unit, and only one fan part is arranged at the heat exchanger of the outdoor unit.
According to another aspect of the present invention, there is provided a control method of an air conditioner for controlling the air conditioner in the above embodiment, the method comprising the steps of: when the main heat exchange system is in a refrigeration mode, the auxiliary heat exchange system is controlled to be in the refrigeration mode so that the refrigerant flow direction of the auxiliary heat exchange system is the same as the refrigerant flow direction of the main heat exchange system, and when the main heat exchange system is in a heating mode under a high-temperature working condition, the auxiliary heat exchange system is controlled to be in the heating mode so that the refrigerant flow direction of the auxiliary heat exchange system is the same as the refrigerant flow direction of the main heat exchange system.
When the main heat exchange system is in a heating mode under a low-temperature working condition, the auxiliary heat exchange system is controlled to be in a cooling mode, so that the flow direction of a refrigerant of the auxiliary heat exchange system is opposite to the flow direction of the refrigerant of the main heat exchange system, or when the main heat exchange system is in the heating mode under the low-temperature working condition, the auxiliary heat exchange system is controlled to be in the heating mode to operate for preset time, whether the temperature and the pressure of the refrigerant of the main heat exchange system reach preset values or not is periodically detected, when the temperature and the pressure of the refrigerant of the main heat exchange system reach the preset values, the auxiliary heat exchange system is controlled to be switched to the cooling mode to operate for preset time until the temperature and the pressure of the refrigerant of the main heat exchange system are outside the.
In this embodiment, the heat exchange mode of the third heat exchange system may be controlled to be the same as the heat exchange mode of the main heat exchange system. That is, when the main heat exchange system is in the cooling mode, the third heat exchange system is also in the cooling mode, and when the main heat exchange system is in the heating mode, the third heat exchange system is also in the heating mode. In this embodiment, the temperature under the high temperature condition is greater than or equal to 2 °, and the temperature under the low temperature condition is less than 2 °.
Particularly, the air conditioner is still in a heating state when defrosting is carried out, so that the heating energy efficiency of the air conditioner can be greatly improved. And the air conditioning system is provided with a plurality of independent refrigerant circulating systems, when frosting is carried out to a certain degree under the working condition of low-temperature heating, the four-way valve of one system is reversed, namely, the refrigeration circulation is realized for defrosting, and in addition, the plurality of systems are normally operated for heating, so that the effect of defrosting without stopping is achieved.
Specifically, the air conditioning system is provided with two independent refrigerant circulating systems, when frosting is finished to a certain degree, a four-way valve of one system is reversed and runs according to a refrigerating cycle to achieve a defrosting effect, and the other system runs normally to heat to achieve a frosting effect without stopping defrosting, so that the heating and energy-saving effects are improved. Two circulations of the air conditioner are realized in the same compressor, the space of the air conditioning system is saved, and the cost is greatly reduced.
According to one embodiment of the present application, the compressor comprises at least 3 cylinders, each cylinder performing separate suction and discharge, each cylinder being capable of independently performing a refrigeration cycle. The three circulating heat exchangers are arranged in the outdoor unit and the indoor unit, two refrigerant circulating systems in normal cooling and heating operation run according to cooling or heating, when the low-temperature heating working condition is adopted, the frosting degree of the outdoor heat exchanger is monitored, when frosting reaches a set value, the frosting degree is fed back to the control processor, the four-way valve of the refrigerant circulating system is assisted to switch the direction, the refrigerant circulating system runs according to the cooling circulation, so that the defrosting effect is achieved, meanwhile, the other two refrigerant circulating systems are in normal operation as the main refrigerant circulating systems, the heating effect is guaranteed, so that the heating stable operation in defrosting is realized, the comfort of the air conditioner is effectively improved, and the heating efficiency is.
At present, when the air temperature is low or below zero in winter, the household air conditioner on the market frosts, the heat exchange efficiency of the outdoor heat exchanger is gradually reduced along with the aggravation of frosting, the energy efficiency of the air conditioner is reduced, in addition, frosting is needed to be changed to a certain degree, the air conditioner generally needs to be shut down during frosting, the defrosting time is generally 5-10 minutes, the heating effect is obviously reduced, the air conditioner is unstable in operation, the energy efficiency in the heating season is greatly reduced, the comfort level of a user is influenced, and meanwhile, the requirement of energy conservation and emission reduction is not met.
In order to solve the technical problem, the application provides a compressor for a multi-heat-exchanger frostless air conditioner and an air conditioning system thereof, wherein the compressor mainly comprises a shell component 20, a first liquid divider 23, a second liquid divider 22, a third liquid divider 21, a motor 24, an upper cover component 25, a first exhaust pipe 26, a second exhaust pipe 28, a third exhaust pipe 29 and a pump body component 27. The pump body assembly comprises a crankshaft 30, an upper flange assembly 31, an upper air cylinder 32, a first partition plate 33, a second partition plate assembly 34, an intermediate air cylinder 35, a third partition plate 36, a lower air cylinder 37, a lower flange assembly 38 and a lower flange cover plate 39. The compressor pump body contains at least 3 cylinders, and each cylinder all realizes independently breathing in and independently exhausting, and there are three suction channel and three exhaust passage in the compressor at least, and each cylinder realizes a refrigeration cycle alone, and each cylinder cycle embodies as follows:
a first refrigeration cycle: the low-temperature low-pressure gaseous refrigerant from the first indoor heat exchanger 11 enters the upper cylinder 32 through the first liquid separator 23, is compressed to become a high-temperature high-pressure gaseous refrigerant, is discharged into the cavity of the shell through the exhaust port of the upper flange, is discharged from the first exhaust pipe 26 through the motor gap space, enters the first outdoor heat exchanger 5 through the first four-way valve 2 to release heat and condense into a high-temperature high-pressure liquid refrigerant, is throttled into a low-temperature low-pressure gas-liquid mixed refrigerant through the first electronic expansion valve 8, enters the first indoor heat exchanger 11 to be sucked and evaporated into a low-temperature low-pressure gaseous refrigerant, and completes a first refrigeration cycle.
A second refrigeration cycle: the low-temperature and low-pressure gaseous refrigerant from the second indoor heat exchanger 12 enters the middle cylinder 35 through the second liquid separator 22, is compressed to become a high-temperature and high-pressure gaseous refrigerant, is discharged through the second partition plate assembly 34 and the second exhaust pipe 28, enters the second outdoor heat exchanger 6 through the second four-way valve 3 to release heat and condense into a high-temperature and high-pressure liquid refrigerant, is throttled by the second electronic expansion valve 9 to become a low-temperature and low-pressure gas-liquid mixed refrigerant, enters the second indoor heat exchanger 12 to absorb air and evaporate into a low-temperature and low-pressure gaseous refrigerant, and completes a second refrigeration cycle.
A third refrigeration cycle: the low-temperature and low-pressure gaseous refrigerant from the third indoor heat exchanger 13 enters the lower cylinder through the third liquid distributor 21, is compressed to become high-temperature and high-pressure gaseous refrigerant, is discharged through the lower flange component 38 and the third exhaust pipe 29, enters the third outdoor heat exchanger 7 through the third four-way valve 4, enters the condenser to release heat and condense to become high-temperature and high-pressure liquid refrigerant, then is throttled by the second electronic expansion valve 9 to become low-temperature and low-pressure gas-liquid mixed refrigerant, enters the third indoor heat exchanger 13 to absorb air and evaporate to become low-temperature and low-pressure gaseous refrigerant, and the third refrigeration cycle is completed.
The first outdoor heat exchanger 5, the second outdoor heat exchanger 6 and the third outdoor heat exchanger 7 are arranged in the outdoor unit; the first indoor heat exchanger 11, the second indoor heat exchanger 12 and the third indoor heat exchanger 13 are arranged in the indoor unit, and the outdoor unit and the indoor unit both adopt a fan to provide air volume.
The third refrigerant cycle is mainly an auxiliary circulation system (any refrigeration cycle can be used as the auxiliary circulation system), the other two refrigerant cycles are main circulation systems, in order to reduce the power consumption of the compressor, the air cylinder of the auxiliary circulation system adopts a small displacement design, and the auxiliary circulation system air displacement V1 and the main circulation air displacement V2 have the following relations: v1: v2 is in the range of 2-5.
In the refrigeration working condition: the refrigerant flow direction in the auxiliary refrigerant cycle and the refrigerant flow direction in the main refrigerant cycle are the same, and in the specific cycle, as shown in fig. 3, both refrigeration cycles are adopted.
In the high-temperature heating mode: the auxiliary refrigerant cycle and the main refrigerant cycle have the same refrigerant flow direction, and both adopt a heating cycle, and the specific cycle is shown in figure 1.
And under the low-temperature heating working condition:
the first scheme is as follows: the air conditioning system cycle (as shown in fig. 2) in the heating and defrosting mode is adopted, the auxiliary refrigerant cycle and the main refrigerant cycle have opposite refrigerant flow directions, namely, the first refrigerant cycle adopts a refrigeration cycle, and the auxiliary refrigerant cycle has small cylinder displacement and only needs to provide heat without frosting of a pipeline. The main refrigerant cycle is a normal heating cycle, and due to the fact that frosting is not caused, the heat exchange efficiency is high, heating efficiency can be improved, namely, a frostless effect is achieved through heating and refrigerating double cycles, an air conditioning system does not need to be defrosted, the stability of operation of the air conditioner is improved, user experience is improved, meanwhile, the energy efficiency in a heating season is improved, and the beneficial effects of energy conservation and emission reduction are achieved.
Scheme II: when no frost or little frost is formed, the circulation of the air conditioning system in the normal heating mode (as shown in figure 1) is adopted, the frosting condition is monitored, after the frosting reaches a set value, the control valve in the auxiliary refrigerant circulation pipeline is firstly closed, then the four-way valve of the auxiliary refrigeration circulation is switched, the control valve in the auxiliary refrigerant circulation pipeline is opened, the circulation of the air conditioning system in the heating defrosting mode (as shown in figure 2) is adopted, the main refrigerant circulation is normally heated and operated, the defrosting is realized without stopping, the auxiliary refrigerant circulation can be fully utilized, and the heating energy efficiency reaches the optimal state.
To sum up, the auxiliary refrigerant circulating system is switched between heating and refrigerating, so that non-stop efficient defrosting is realized, the stability and comfort of the air conditioning system are improved, and the energy efficiency of the whole air conditioning system can be effectively improved.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
In addition to the foregoing, it should be noted that reference throughout this specification to "one embodiment," "another embodiment," "an embodiment," or the like, means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment described generally throughout this application. The appearances of the same phrase in various places in the specification are not necessarily all referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with any embodiment, it is submitted that it is within the scope of the invention to effect such feature, structure, or characteristic in connection with other embodiments.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (18)
1. A heat exchange system, comprising:
a compressor (1);
the heat exchange systems are multiple and are communicated with the compressor (1), each heat exchange system has an independent heat exchange mode, the heat exchange modes comprise a heating mode and a refrigerating mode, and the heat exchange systems comprise at least one main heat exchange system and at least one auxiliary heat exchange system;
the auxiliary heat exchange system is arranged adjacent to the main heat exchange system, the heat exchange mode of the auxiliary heat exchange system can be the same as or opposite to that of the main heat exchange system, and when the heat exchange mode of the auxiliary heat exchange system is opposite to that of the main heat exchange system, the auxiliary heat exchange system and the main heat exchange system perform heat exchange operation to prevent the main heat exchange system from frosting.
2. A heat exchange system according to claim 1, wherein the compressor (1) has a plurality of working chambers including a first working chamber, the main heat exchange system comprising:
a first outdoor heat exchanger (5), a first end of the first outdoor heat exchanger (5) is selectively communicated with a first exhaust pipe (26) of the compressor (1) or a suction port of the first working cavity, and the first exhaust pipe (26) is communicated with an exhaust port of the first working cavity;
a first indoor heat exchanger (11), wherein a first end of the first indoor heat exchanger (11) is communicated with a second end of the first outdoor heat exchanger (5), and a second end of the first indoor heat exchanger (11) is selectively communicated with the first exhaust pipe (26) or a suction port of the first working cavity.
3. A heat exchange system according to claim 2, wherein one of the first end of the first outdoor heat exchanger (5) and the second end of the first indoor heat exchanger (11) is selectively communicated with the first exhaust pipe (26) through a first four-way valve (2), and the other one of the first end of the first outdoor heat exchanger (5) and the second end of the first indoor heat exchanger (11) is selectively communicated with the suction port of the first working chamber through the first four-way valve (2).
4. The heat exchange system of claim 2 wherein the plurality of working chambers includes a second working chamber disposed independently of the first working chamber, the auxiliary heat exchange system comprising:
a second outdoor heat exchanger (6), a first end of the second outdoor heat exchanger (6) is selectively communicated with a second exhaust pipe (28) of the compressor (1) or a suction port of the second working cavity, and the second exhaust pipe (28) is communicated with an exhaust port of the second working cavity;
a second indoor heat exchanger (12), wherein a first end of the second indoor heat exchanger (12) is communicated with a second end of the second outdoor heat exchanger (6), and a second end of the second indoor heat exchanger (12) is selectively communicated with the second exhaust pipe (28) or a suction port of the second working cavity.
5. A heat exchange system according to claim 4, wherein one of the first end of the second outdoor heat exchanger (6) and the second end of the second indoor heat exchanger (12) is selectively communicable with the second exhaust duct (28) through a second four-way valve (3), and the other of the first end of the second outdoor heat exchanger (6) and the second end of the second indoor heat exchanger (12) is selectively communicable with the suction port of the second working chamber through the second four-way valve (3).
6. A heat exchange system according to claim 4, wherein the second outdoor heat exchanger (6) is arranged adjacent to the first outdoor heat exchanger (5) and the second indoor heat exchanger (12) is arranged adjacent to the first indoor heat exchanger (11).
7. The heat exchange system of claim 6 wherein the plurality of working chambers includes a third working chamber, the third working chamber being independent of the first and second working chambers, the plurality of heat exchange systems further including a third heat exchange system, the third heat exchange system including:
a third outdoor heat exchanger (7), wherein a first end of the third outdoor heat exchanger (7) is selectively communicated with a third exhaust pipe (29) of the compressor (1) or a suction port of the third working cavity, and the third exhaust pipe (29) is communicated with an exhaust port of the third working cavity;
and a first end of the third indoor heat exchanger (13) is communicated with a second end of the third outdoor heat exchanger (7), and a second end of the third indoor heat exchanger (13) is selectively communicated with the third exhaust pipe (29) or a suction port of the third working cavity.
8. A heat exchange system according to claim 7, characterised in that the second outdoor heat exchanger (6) is located between the third outdoor heat exchanger (7) and the first outdoor heat exchanger (5), and the second indoor heat exchanger (12) is located between the first indoor heat exchanger (11) and the third indoor heat exchanger (13).
9. A heat exchange system according to claim 7, wherein one of the first end of the third outdoor heat exchanger (7) and the second end of the third indoor heat exchanger (13) is selectively communicable with the third exhaust duct (29) via a third four-way valve (4), and the other of the first end of the third outdoor heat exchanger (7) and the second end of the third indoor heat exchanger (13) is selectively communicable with the suction port of the third working chamber via the third four-way valve (4).
10. The heat exchange system according to claim 7, characterized in that the compressor (1) has a pump body assembly (27), the pump body assembly (27) comprising an upper cylinder (32), a middle cylinder (35) and a lower cylinder (37), wherein the upper cylinder (32) is provided with the first working chamber, the middle cylinder (35) is provided with the second working chamber, and the lower cylinder (37) is provided with the third working chamber.
11. The heat exchange system of claim 7 wherein the heat exchange pattern of the third heat exchange system is set in synchronization with the heat exchange pattern of the main heat exchange system.
12. The heat exchange system of claim 1, wherein the auxiliary heat exchange system has an exhaust gas volume of V1 and the main heat exchange system has an exhaust gas volume of V2, wherein 2. ltoreq. V1/V2. ltoreq.5.
13. A heat exchange system according to claim 2, wherein when the temperature and pressure of the first outdoor heat exchanger (5) and/or the first indoor heat exchanger (11) reach preset values after the main heat exchange system operates for a preset time, the heat exchange mode of the auxiliary heat exchange system is controlled to be opposite to the heat exchange mode of the main heat exchange system.
14. An air conditioner comprising a heat exchange system, wherein the heat exchange system is as claimed in any one of claims 1 to 13.
15. A control method of an air conditioner for controlling the air conditioner as set forth in claim 14, the method comprising the steps of:
when the main heat exchange system is in a refrigeration mode, controlling the auxiliary heat exchange system to be in the refrigeration mode so that the flow direction of a refrigerant of the auxiliary heat exchange system is the same as that of the refrigerant of the main heat exchange system;
and when the main heat exchange system is in a heating mode under a high-temperature working condition, controlling the auxiliary heat exchange system to be in the heating mode so as to enable the refrigerant flow direction of the auxiliary heat exchange system to be the same as the refrigerant flow direction of the main heat exchange system.
16. The method of claim 15, further comprising the steps of:
when the main heat exchange system is in a heating mode under a low-temperature working condition, the auxiliary heat exchange system is controlled to be in a cooling mode, so that the flow direction of the refrigerant of the auxiliary heat exchange system is opposite to that of the refrigerant of the main heat exchange system, or,
when the main heat exchange system is in a heating mode under a low-temperature working condition, after the auxiliary heat exchange system is controlled to be in the heating mode to operate for preset time, periodically detecting whether the temperature and the pressure of a refrigerant of the main heat exchange system reach preset values, when the temperature and the pressure of the refrigerant of the main heat exchange system reach the preset values, controlling the auxiliary heat exchange system to be switched to a cooling mode to operate for preset time until the temperature and the pressure of the refrigerant of the main heat exchange system are out of the preset values, and then controlling the auxiliary heat exchange system to be in the heating mode.
17. The method according to claim 15 or 16, characterized in that the method further comprises the steps of:
and controlling the heat exchange mode of the third heat exchange system to be the same as that of the main heat exchange system.
18. The method of claim 15, wherein the temperature at the high temperature condition is greater than or equal to 2 ° and/or the temperature at the low temperature condition is less than 2 °.
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