CN110805958B - Air conditioner indoor unit, air conditioner and control method - Google Patents
Air conditioner indoor unit, air conditioner and control method Download PDFInfo
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- CN110805958B CN110805958B CN201911086040.1A CN201911086040A CN110805958B CN 110805958 B CN110805958 B CN 110805958B CN 201911086040 A CN201911086040 A CN 201911086040A CN 110805958 B CN110805958 B CN 110805958B
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- 238000000034 method Methods 0.000 title claims description 12
- 239000003507 refrigerant Substances 0.000 claims abstract description 38
- 238000010438 heat treatment Methods 0.000 claims abstract description 22
- 238000009423 ventilation Methods 0.000 claims description 42
- 238000007664 blowing Methods 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 238000005057 refrigeration Methods 0.000 abstract description 3
- 230000000052 comparative effect Effects 0.000 description 6
- 239000007788 liquid Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000004088 simulation Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
Classifications
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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
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0011—Indoor units, e.g. fan coil units characterised by air outlets
- F24F1/0014—Indoor units, e.g. fan coil units characterised by air outlets having two or more outlet openings
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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
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0043—Indoor units, e.g. fan coil units characterised by mounting arrangements
- F24F1/005—Indoor units, e.g. fan coil units characterised by mounting arrangements mounted on the floor; standing on the floor
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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
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0059—Indoor units, e.g. fan coil units characterised by heat exchangers
- F24F1/0063—Indoor units, e.g. fan coil units characterised by heat exchangers by the mounting or arrangement of the heat exchangers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0059—Indoor units, e.g. fan coil units characterised by heat exchangers
- F24F1/0067—Indoor units, e.g. fan coil units characterised by heat exchangers by the shape of the heat exchangers or of parts thereof, e.g. of their fins
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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
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
- F24F5/001—Compression cycle type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B13/00—Compression machines, plants or systems, with reversible cycle
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The application provides an air conditioner indoor unit, comprising: the air conditioner comprises a shell, an air duct, a first heat exchanger and an air supply mechanism, wherein the air duct is positioned in the shell; the first heat exchanger is arranged in the air duct; the air supply mechanism supplies air through the air duct, the flowing direction of air in the air duct is opposite to the flowing direction of a refrigerant in the first heat exchanger when the air flows through the first heat exchanger, and the refrigerant flow direction and the air flow direction of the heat exchanger of the internal machine can form countercurrent under the refrigerating and heating modes at the same time, so that the heat exchange efficiency of the heat exchanger is improved. According to the air conditioner indoor unit, the refrigerant flow direction and the air flow direction of the indoor unit heat exchanger form countercurrent under the refrigeration and heating modes at the same time, so that the heat exchange efficiency of the heat exchanger is improved.
Description
Technical Field
The application belongs to the technical field of air conditioners, and particularly relates to an air conditioner indoor unit, an air conditioner and a control method.
Background
Currently, cylindrical cabinet air conditioners are increasingly used in the market. The inner machine heat exchanger of the cylinder type cabinet air conditioner generally adopts a cylinder type heat exchanger, is vertically arranged, and is used as an evaporator when in a refrigerating mode, and low-temperature low-pressure refrigerant after throttling is evaporated in the evaporator to absorb heat so as to provide cold. When the heating mode is operated, the indoor heat exchanger serves as a condenser, and the high-temperature high-pressure gaseous working medium discharged by the compressor flows into the condenser after being reversed by the four-way valve to be condensed and released, so that heat is provided for the indoor space.
However, the refrigerant reversing circulation exists in the refrigerating and heating modes, so that the refrigerant flow direction in the heat exchanger of the internal machine and the air circulation direction form concurrent flow during the refrigerating or heating modes, thereby influencing the heat exchange efficiency.
Therefore, how to provide an air conditioner indoor unit, an air conditioner and a control method capable of simultaneously realizing that the refrigerant flow direction and the air flow direction form countercurrent under the refrigerating and heating modes of the indoor unit heat exchanger, and further improving the heat exchange efficiency of the heat exchanger is an urgent problem to be solved by those skilled in the art.
Disclosure of Invention
Therefore, the technical problem to be solved by the application is to provide an air conditioner inner unit, an air conditioner and a control method, which can simultaneously realize that the refrigerant flow direction and the air flow direction form countercurrent under the refrigerating and heating modes of the inner unit heat exchanger, thereby improving the heat exchange efficiency of the heat exchanger.
In order to solve the above problems, the present application provides an air conditioner indoor unit comprising:
a housing;
the air duct is positioned in the shell;
the first heat exchanger is arranged in the air duct;
and the air supply mechanism supplies air through an air duct, and the flowing direction of air in the air duct is opposite to the flowing direction of the refrigerant in the first heat exchanger when the air flows through the first heat exchanger.
Preferably, the first heat exchanger comprises an outer heat exchanger and an inner heat exchanger which are communicated with each other; the outer heat exchanger comprises a plurality of outer flow pipes; the inner row heat exchanger comprises a plurality of inner flow pipes.
Preferably, the plurality of inner flow pipes are all U-shaped pipes; and/or, the plurality of outflow pipes are U-shaped pipes.
Preferably, the shell is provided with a first ventilation opening and a second ventilation opening; the first ventilation opening is positioned at the first end of the air duct, and the second ventilation opening is positioned at the second end of the air duct; the first ventilation opening and the second ventilation opening are communicated with the air duct; the first heat exchanger corresponds to the position of the first ventilation opening; the outer heat exchanger and the inner heat exchanger are sequentially arranged in a direction away from the first ventilation opening; the air supply mechanism sucks air into the air channel from one of the first ventilation opening and the second ventilation opening and discharges the air from the other ventilation opening.
Preferably, the outer heat exchanger is annular in shape, and the inner heat exchanger is located on the inner peripheral side of the outer heat exchanger; the first ventilation opening is arranged on the side wall of the shell and corresponds to the position of the outer heat exchanger.
Preferably, the inner row of heat exchangers is annular in shape.
Preferably, the first vent is provided at a lower portion of the housing;
and/or the second ventilation opening is arranged at the top end of the shell.
Preferably, the first heat exchanger comprises at least two flow paths arranged in parallel with each other, each flow path comprising at least one outer flow tube and at least one inner flow tube communicating with each other.
Preferably, the total number of outer flow tubes in the first heat exchanger is the same as the total number of inner flow tubes.
Preferably, the first heat exchanger includes a first flow path, a second flow path, a third flow path, and a fourth flow path disposed in parallel with each other; the first flow path comprises four outer flow pipes and two inner flow pipes which are communicated;
and/or the second flow path comprises two outer flow pipes and three inner flow pipes which are communicated;
and/or the third flow path comprises three outer flow pipes and two inner flow pipes which are communicated;
and/or the fourth flow path comprises two outer flow pipes and four inner flow pipes which are communicated.
Preferably, the first heat exchanger includes a first flow path, a second flow path, a third flow path, and a fourth flow path disposed in parallel with each other; the first flow path comprises four inner flow pipes and two outer flow pipes which are communicated;
and/or the second flow path comprises two inner flow pipes and three outer flow pipes which are communicated;
and/or the third flow path comprises three inner flow pipes and two outer flow pipes which are communicated;
and/or the fourth flow path comprises two inner flow pipes and four outer flow pipes which are communicated.
Preferably, the first flow path comprises a first inner flow pipe, a second inner flow pipe, a first outer flow pipe, a third outer flow pipe and a fourth outer flow pipe which are connected in sequence; the first inner flow pipe is arranged below the second inner flow pipe; the first outer flow pipe, the second outer flow pipe, the third outer flow pipe and the fourth outer flow pipe are sequentially arranged from top to bottom;
and/or the second flow path comprises a third inner flow pipe, a fourth inner flow pipe, a fifth outer flow pipe and a sixth outer flow pipe which are connected in sequence; the fifth outflow pipe is arranged below the sixth outflow pipe; the third inner runner pipe, the fourth inner runner pipe and the fifth inner runner pipe are sequentially arranged from top to bottom;
and/or the third flow path comprises a sixth inner flow pipe, a seventh outer flow pipe, an eighth outer flow pipe and a ninth outer flow pipe which are connected in sequence; the sixth inner flow pipe is arranged below the seventh inner flow pipe; the seventh outflow pipe, the eighth outflow pipe and the ninth outflow pipe are sequentially arranged from top to bottom;
and/or the fourth flow path comprises an eighth inner flow pipe, a ninth inner flow pipe, a tenth inner flow pipe, an eleventh inner flow pipe, a tenth outer flow pipe and an eleventh outer flow pipe which are connected in sequence; the tenth outflow pipe is arranged above the eleventh outflow pipe; the eighth inner flow pipe, the ninth inner flow pipe, the tenth inner flow pipe and the eleventh inner flow pipe are sequentially arranged from top to bottom.
Preferably, the first flow path comprises a first inner flow pipe, a second inner flow pipe, a third inner flow pipe, a fourth inner flow pipe, a first outer flow pipe and a second outer flow pipe which are connected in sequence; the first outer flow pipe is arranged above the second outer flow pipe; the first inner runner pipe, the second inner runner pipe, the third inner runner pipe and the fourth inner runner pipe are sequentially arranged from bottom to top;
and/or the second flow path comprises a fifth inner flow pipe, a sixth inner flow pipe, a third outer flow pipe, a fourth outer flow pipe and a fifth outer flow pipe which are connected in sequence; the fifth outer flow pipe is arranged above the sixth inner flow pipe; the third outer flow pipe, the fourth outer flow pipe and the fifth outer flow pipe are sequentially arranged from bottom to top;
and/or the third flow path comprises a seventh inner flow pipe, an eighth inner flow pipe, a ninth inner flow pipe, a sixth outer flow pipe and a seventh outer flow pipe which are connected in sequence; the sixth outflow pipe is arranged above the seventh outflow pipe; the seventh inner runner pipe, the eighth inner runner pipe and the ninth inner runner pipe are sequentially arranged from bottom to top;
and/or the fourth flow path comprises a tenth inner flow pipe, an eleventh inner flow pipe, an eighth outer flow pipe, a ninth outer flow pipe, a tenth outer flow pipe and an eleventh outer flow pipe which are connected in sequence; the tenth inner flow pipe is arranged above the eleventh inner flow pipe; the eighth outflow pipe, the ninth outflow pipe, the tenth outflow pipe and the eleventh outflow pipe are sequentially arranged from bottom to top.
Preferably, the first heat exchanger is provided with a first port and a second port; the first port is used for communicating the four-way valve with the first heat exchanger, and the second port is used for communicating the throttling element with the first heat exchanger; the first port is arranged on the outer-row heat exchanger, and the second port is arranged on the inner-row heat exchanger.
Preferably, the first flow path is provided with a first flow hole and a second flow hole; the first flow hole is positioned on the outer flow pipe, and the second flow hole is positioned on the inner flow pipe; the first flow hole is used for communicating the four-way valve with the first heat exchanger, and the second flow hole is used for communicating the throttling element with the first heat exchanger;
and/or the second flow path is provided with a third flow hole and a fourth flow hole, the third flow hole is positioned on the outer flow pipe, and the fourth flow hole is positioned on the inner flow pipe; the third flow hole is used for communicating the four-way valve with the first heat exchanger, and the fourth flow hole is used for communicating the throttling element with the first heat exchanger;
and/or a fifth flow hole and a sixth flow hole are arranged on the third flow path, the fifth flow hole is positioned on the outer flow pipe, and the sixth flow hole is positioned on the inner flow pipe; the fifth circulation hole is used for communicating the four-way valve with the first heat exchanger, and the sixth circulation hole is used for communicating the throttling element with the first heat exchanger;
and/or a seventh flow hole and an eighth flow hole are arranged on the fourth flow path, the seventh flow hole is positioned on the outer flow pipe, and the eighth flow hole is positioned on the inner flow pipe; the seventh circulation hole is used for communicating the four-way valve with the first heat exchanger, and the eighth circulation hole is used for communicating the throttling element with the first heat exchanger.
Preferably, the first flow path, the second flow path, the third flow path and the fourth flow path are sequentially arranged from top to bottom;
and/or the first flow hole is located higher than the second flow hole; the third flow hole is located higher than the fourth flow hole; the fifth flow hole is located higher than the sixth flow hole; the seventh flow hole is located higher than the eighth flow hole;
and/or the first flow hole is located lower than the second flow hole; the third flow hole is located lower than the fourth flow hole; the fifth flow hole is located lower than the sixth flow hole; the seventh flow hole is located lower than the eighth flow hole.
According to still another aspect of the present application, there is provided an air conditioner including an air conditioner indoor unit, the air conditioner indoor unit being the air conditioner indoor unit described above.
Preferably, the method further comprises: the air conditioner comprises a compressor, a four-way valve, a throttling element and a second heat exchanger, wherein an exhaust port of the compressor is communicated to a first valve port of the four-way valve, a second valve port of the four-way valve is communicated to a first port of the first heat exchanger, a third valve port of the four-way valve is communicated to an air suction port of the compressor, a fourth valve port of the four-way valve is communicated to the second heat exchanger, a first end of the throttling element is communicated to a first port of the first heat exchanger, a second end of the throttling element is communicated with the second heat exchanger, and the four-way valve controls the flow direction of a refrigerant through reversing so that the air conditioner is switched between a refrigerating mode and a heating mode.
According to still another aspect of the present application, there is provided a control method of an air conditioner, the air conditioner including:
detecting the working mode of the air conditioner; the working modes comprise a heating mode and a refrigerating mode;
and controlling the air supply direction of the air supply mechanism according to the working mode of the air conditioner.
Preferably, the step of controlling the air supply direction of the air supply mechanism according to the operation mode of the air conditioner includes:
when the air conditioner is in a refrigerating mode, a refrigerant enters the first heat exchanger through the second port and flows out from the first port, and the air supply mechanism is controlled to suck air into the air channel from the first vent and discharge the air from the second vent;
when the air conditioner is in a heating mode, the refrigerant enters the first heat exchanger through the first port and flows out from the second port, and the air supply mechanism is controlled to suck air into the air channel from the second air vent and discharge the air from the first air vent.
The air conditioner inner unit, the air conditioner and the control method can simultaneously realize that the refrigerant flow direction and the air flow direction form countercurrent under the refrigerating and heating modes of the heat exchanger of the inner unit, thereby improving the heat exchange efficiency of the heat exchanger.
Drawings
Fig. 1 is a schematic structural view of an air conditioner indoor unit according to an embodiment of the present application;
FIG. 2 is a schematic view of a heat exchanger according to an embodiment of the present application;
FIG. 3 is a schematic view of a heat exchanger according to an embodiment of the present application;
FIG. 4 is a schematic view of a heat exchanger according to an embodiment of the present application;
FIG. 5 is a schematic view showing the structure of a heat exchanger according to a comparative example of the present application;
fig. 6 is a schematic structural view of a heat exchanger according to a comparative example of the present application.
The reference numerals are expressed as:
1. a housing; 21. a first vent; 22. a second vent; 3. an air supply mechanism; 4. a first heat exchanger; 41. a first flow path; 411. a first flow hole; 412. a second flow hole; 42. a second flow path; 421. a third flow hole; 422. a fourth flow hole; 43. a third flow path; 431. a fifth flow hole; 432. a sixth flow hole; 44. a fourth flow path; 441. a seventh flow hole; 442. eighth flow holes.
Detailed Description
Referring to fig. 1 in combination, according to an embodiment of the present application, an air conditioner includes: the air conditioner comprises a shell 1, an air duct, a first heat exchanger 4 and an air supply mechanism 3, wherein the air duct is positioned in the shell 1; the first heat exchanger 4 is arranged in the air duct; the air supply mechanism 3 supplies air through the air duct, and the flowing direction of air in the air duct when flowing through the first heat exchanger 4 is opposite to the flowing direction of the refrigerant in the first heat exchanger 4, so that the refrigerant flow direction and the air flow direction of the inner machine heat exchanger form countercurrent under the refrigerating and heating modes at the same time, and the heat exchange efficiency of the heat exchanger is improved.
Further, the first heat exchanger 4 includes an outer heat exchanger and an inner heat exchanger which are communicated with each other; the outer heat exchanger comprises a plurality of outer flow pipes; the inner row heat exchanger comprises a plurality of inner flow pipes.
Further, the plurality of inner flow pipes are U-shaped pipes; and/or, the plurality of outflow pipes are U-shaped pipes.
Further, a first ventilation opening 21 and a second ventilation opening 22 are formed in the shell 1; the first ventilation opening 21 is positioned at the first end of the air channel, and the second ventilation opening 22 is positioned at the second end of the air channel; and the first ventilation opening 21 and the second ventilation opening 22 are communicated with the air duct; the first heat exchanger 4 corresponds to the position of the second ventilation opening 22; the outer heat exchanger and the inner heat exchanger are sequentially arranged in a direction away from the second air vent 22; the air blowing mechanism sucks air into the duct from one of the first ventilation opening 21 and the second ventilation opening 22, and discharges the air from the other.
Further, the shape of the outer heat exchanger is annular, and the inner heat exchanger is positioned on the inner periphery side of the outer heat exchanger; the second ventilation opening 22 is arranged on the side wall of the shell 1 and corresponds to the position of the heat exchanger.
Further, the shape of the heat exchanger of the outer row is square, and the heat exchanger of the outer row corresponds to the position of the second ventilation opening 22.
Further, the shape of the inner row of heat exchangers is annular.
Further, the second ventilation opening 22 is provided at the lower portion of the housing 1;
and/or the first ventilation opening 21 is provided at the top end of the housing 1.
Further, the first heat exchanger 4 comprises at least two flow paths arranged in parallel with each other, each flow path comprising at least one outer flow pipe and at least one inner flow pipe communicating with each other.
Further, the total number of the outer flow pipes in the first heat exchanger 4 is the same as the total number of the inner flow pipes.
Further, the first heat exchanger 4 includes a first flow path 41, a second flow path 42, a third flow path 43, and a fourth flow path 44 that are disposed in parallel with each other; the first flow path 41 includes four outer flow pipes and two inner flow pipes which are communicated;
and/or the second flow path 42 includes two outer flow tubes and three inner flow tubes in communication;
and/or the third flow path 43 includes three outer flow pipes and two inner flow pipes that are communicated;
and/or the fourth flow path 44 includes two outer flow tubes and four inner flow tubes in communication.
Further, the first heat exchanger 4 includes a first flow path 41, a second flow path 42, a third flow path 43, and a fourth flow path 44 that are disposed in parallel with each other; the first flow path 41 includes four inner flow pipes and two outer flow pipes which are communicated;
and/or the second flow path 42 includes two inner flow tubes and three outer flow tubes in communication;
and/or the third flow path 43 comprises three inner flow pipes and two outer flow pipes which are communicated;
and/or the fourth flow path 44 includes two inner flow tubes and four outer flow tubes in communication.
Referring to fig. 2-3 in combination, the present application also discloses some embodiments, wherein the first flow path 41 includes a first inner flow pipe, a second inner flow pipe, a first outer flow pipe, a third outer flow pipe, and a fourth outer flow pipe, which are sequentially connected; the first inner flow pipe is arranged below the second inner flow pipe; the first outer flow pipe, the second outer flow pipe, the third outer flow pipe and the fourth outer flow pipe are sequentially arranged from top to bottom;
and/or the second flow path 42 includes a third inner flow pipe, a fourth inner flow pipe, a fifth inner flow pipe, and a fifth outer flow pipe and a sixth outer flow pipe connected in sequence; the fifth outflow pipe is arranged below the sixth outflow pipe; the third inner runner pipe, the fourth inner runner pipe and the fifth inner runner pipe are sequentially arranged from top to bottom;
and/or the third flow path 43 includes a sixth inner flow pipe, a seventh outer flow pipe, an eighth outer flow pipe, and a ninth outer flow pipe, which are connected in this order; the sixth inner flow pipe is arranged below the seventh inner flow pipe; the seventh outflow pipe, the eighth outflow pipe and the ninth outflow pipe are sequentially arranged from top to bottom;
and/or the fourth flow path 44 includes an eighth inner flow pipe, a ninth inner flow pipe, a tenth inner flow pipe, an eleventh inner flow pipe, and tenth and eleventh outer flow pipes connected in sequence; the tenth outflow pipe is arranged above the eleventh outflow pipe; the eighth inner flow pipe, the ninth inner flow pipe, the tenth inner flow pipe and the eleventh inner flow pipe are sequentially arranged from top to bottom, in a refrigeration mode, liquid refrigerants in the second flow path and the fourth flow path firstly downwards travel 3U pipes and 4U pipes respectively, after the dryness of the refrigerants is gradually increased, 2U pipes upwards travel respectively, the gravity of the liquid refrigerants and the phase characteristics of the gaseous refrigerants floating upwards are fully utilized, and heat exchange can be enhanced; in the heating mode, each branch refrigerant inlet is arranged on the outer heat exchange tube, the refrigerant inlets are lower than the refrigerant outlets, the air flow mode is set to be upper air inlet and lower air outlet, and the refrigerant flow direction and the air inlet direction are in a countercurrent mode; during heating mode, the gaseous refrigerant in the first flow path and the third flow path firstly goes upward to 4U pipes and 3U pipes, respectively goes downward to 2U pipes, fully utilizes the characteristics of the gaseous refrigerant and the liquid refrigerant, and fully exchanges heat.
Referring to fig. 4 in combination, the present application also discloses some embodiments, wherein the first flow path 41 includes a first inner flow pipe, a second inner flow pipe, a third inner flow pipe, a fourth inner flow pipe, and a first outer flow pipe and a second outer flow pipe which are sequentially connected; the first outer flow pipe is arranged above the second outer flow pipe; the first inner runner pipe, the second inner runner pipe, the third inner runner pipe and the fourth inner runner pipe are sequentially arranged from bottom to top;
and/or the second flow path 42 includes a fifth inner flow pipe, a sixth inner flow pipe, and a third outer flow pipe, a fourth outer flow pipe, and a fifth outer flow pipe connected in sequence; the fifth outer flow pipe is arranged above the sixth inner flow pipe; the third outer flow pipe, the fourth outer flow pipe and the fifth outer flow pipe are sequentially arranged from bottom to top;
and/or, the third flow path 43 includes a seventh inner flow pipe, an eighth inner flow pipe, a ninth inner flow pipe, and a sixth outer flow pipe and a seventh outer flow pipe connected in sequence; the sixth outflow pipe is arranged above the seventh outflow pipe; the seventh inner runner pipe, the eighth inner runner pipe and the ninth inner runner pipe are sequentially arranged from bottom to top;
and/or the fourth flow path 44 includes a tenth inner flow pipe, an eleventh inner flow pipe, and an eighth outer flow pipe, a ninth outer flow pipe, a tenth outer flow pipe, and an eleventh outer flow pipe connected in sequence; the tenth inner flow pipe is arranged above the eleventh inner flow pipe; the eighth outflow pipe, the ninth outflow pipe, the tenth outflow pipe and the eleventh outflow pipe are sequentially arranged from bottom to top.
Further, the first heat exchanger 4 is provided with a first port and a second port; the first port is used for communicating the four-way valve with the first heat exchanger 4, and the second port is used for communicating the throttling element with the first heat exchanger 4; the first port is arranged on the outer-row heat exchanger, and the second port is arranged on the inner-row heat exchanger.
Further, the air supply mechanism 3 comprises a controller and a fan assembly, the controller is connected with the fan assembly and used for controlling the fan assembly to supply air, and the fan assembly is arranged in the air duct.
Further, the fan assembly comprises a first fan and a second fan which are opposite to each other in installation direction; the controller is used for independently controlling the first fan and the second fan; the first fan and the second fan are sequentially arranged from top to bottom, and when the air is blown downwards, the first fan rotates reversely, and the second fan rotates positively to blow the air; when upward blowing, the first fan is positively rotated, and the second fan is reversely rotated to supply air, so that the air supply direction can be effectively changed, the flowing direction of air in the air channel when the air flows through the first heat exchanger 4 is opposite to the flowing direction of the refrigerant in the first heat exchanger 4, and the first fan and the second fan are adopted to supply air in a matched manner, so that the air quantity can be increased, and the air supply effect is improved.
Further, the first flow path 41 is provided with a first flow hole 411 and a second flow hole 412; the first flow hole 411 is positioned on the outer flow pipe, and the second flow hole 412 is positioned on the inner flow pipe; the first flow hole 411 is used for communicating the four-way valve with the first heat exchanger 4, and the second flow hole 412 is used for communicating the throttling element with the first heat exchanger 4;
and/or, the second flow path 42 is provided with a third flow hole 421 and a fourth flow hole 422, the third flow hole 421 is located on the outer flow pipe, and the fourth flow hole 422 is located on the inner flow pipe; the third flow hole 421 is used for communicating the four-way valve with the first heat exchanger 4, and the fourth flow hole 422 is used for communicating the throttling element with the first heat exchanger 4;
and/or, the third flow path 43 is provided with a fifth flow hole 431 and a sixth flow hole 432, the fifth flow hole 431 is located on the outer flow pipe, and the sixth flow hole 432 is located on the inner flow pipe; the fifth flow hole 431 is used for communicating the four-way valve with the first heat exchanger 4, and the sixth flow hole 432 is used for communicating the throttling element with the first heat exchanger 4;
and/or, the fourth flow path 44 is provided with a seventh flow hole 441 and an eighth flow hole 442, the seventh flow hole 441 is located on the outer flow pipe, and the eighth flow hole 442 is located on the inner flow pipe; the seventh flow hole 441 is used for communicating the four-way valve with the first heat exchanger 4, and the eighth flow hole 442 is used for communicating the throttling element with the first heat exchanger 4.
Further, the first flow path 41, the second flow path 42, the third flow path 43, and the fourth flow path 44 are provided in this order from top to bottom;
and/or the first flow holes 411 are located higher than the second flow holes 412; the third through-hole 421 is located higher than the fourth through-hole 422; the fifth flow hole 431 is located higher than the sixth flow hole 432; the seventh through-hole 441 is located higher than the eighth through-hole 442;
and/or the first flow holes 411 are located lower than the second flow holes 412; the third flow hole 421 is located lower than the fourth flow hole 422; the fifth flow hole 431 is located lower than the sixth flow hole 432; the seventh through-hole 441 is located lower than the eighth through-hole 442.
According to the embodiment of the application, an air conditioner is also disclosed, which comprises an air conditioner indoor unit, wherein the air conditioner indoor unit is the air conditioner indoor unit.
Further, the method further comprises the following steps: the air conditioner comprises a compressor, a four-way valve, a throttling element and a second heat exchanger, wherein an exhaust port of the compressor is communicated to a first port of the four-way valve, a second port of the four-way valve is communicated to a first port of the first heat exchanger 4, a third port of the four-way valve is communicated to an air suction port of the compressor, a fourth port of the four-way valve is communicated to the second heat exchanger, a first end of the throttling element is communicated to the first heat exchanger 4, a second end of the throttling element is communicated with the second heat exchanger, and the four-way valve controls the flow direction of a refrigerant through reversing so that an air conditioner internal unit is switched between a refrigerating mode and a heating mode.
According to an embodiment of the present application, there is also disclosed a control method of an air conditioner, the air conditioner including:
detecting the working mode of the air conditioner; the working modes comprise a heating mode and a refrigerating mode;
the air supply direction of the air supply mechanism 3 is controlled according to the operation mode of the air conditioner.
Further, the step of controlling the air blowing direction of the air blowing mechanism 3 according to the operation mode of the air conditioner includes:
when the air conditioner is in the refrigeration mode, the refrigerant enters the first heat exchanger 4 through the second port and flows out from the first port, and the air supply mechanism 3 is controlled to suck air into the air duct from the second air port 22 and discharge the air from the first air port 21;
when the air conditioner is in heating mode, the refrigerant enters the first heat exchanger 4 through the first port and flows out from the second port, and the air supply mechanism 3 is controlled to suck air into the air duct from the first ventilation opening 21 and discharge the air from the second ventilation opening 22.
Referring to fig. 2-3 in combination, the present application also discloses embodiment 1: arrows in fig. 2-3 represent the refrigerant flow direction and the air flow direction, and broken lines in the drawings are heat exchange branch U pipes;
referring to fig. 5-6 in combination, the present application also discloses comparative example 1: arrows in fig. 5 to 6 represent the refrigerant flow direction and the air flow direction, and broken lines in the drawings are heat exchange branch U tubes;
in both example 1 and comparative example 1, use was made of: the first flow path 41 includes a first inner flow pipe, a second inner flow pipe, a first outer flow pipe, a third outer flow pipe, and a fourth outer flow pipe, which are connected in sequence; the first inner flow pipe is arranged below the second inner flow pipe; the first outer flow pipe, the second outer flow pipe, the third outer flow pipe and the fourth outer flow pipe are sequentially arranged from top to bottom;
and/or the second flow path 42 includes a third inner flow pipe, a fourth inner flow pipe, a fifth inner flow pipe, and a fifth outer flow pipe and a sixth outer flow pipe connected in sequence; the fifth outflow pipe is arranged below the sixth outflow pipe; the third inner runner pipe, the fourth inner runner pipe and the fifth inner runner pipe are sequentially arranged from top to bottom;
and/or the third flow path 43 includes a sixth inner flow pipe, a seventh outer flow pipe, an eighth outer flow pipe, and a ninth outer flow pipe, which are connected in this order; the sixth inner flow pipe is arranged below the seventh inner flow pipe; the seventh outflow pipe, the eighth outflow pipe and the ninth outflow pipe are sequentially arranged from top to bottom;
and/or the fourth flow path 44 includes an eighth inner flow pipe, a ninth inner flow pipe, a tenth inner flow pipe, an eleventh inner flow pipe, and tenth and eleventh outer flow pipes connected in sequence; the tenth outflow pipe is arranged above the eleventh outflow pipe; the eighth inner flow pipe, the ninth inner flow pipe, the tenth inner flow pipe and the eleventh inner flow pipe are sequentially arranged from top to bottom.
In the embodiment 1, the air flow direction is opposite to the refrigerant flow direction, and in the comparative example 1, the air flow direction is the same as the refrigerant flow direction.
Simulation experiments were performed on comparative example 1 and example 1, and the results are shown in table 1 below:
table 1 simulation data of heat exchange capacity of heat exchanger in different modes
As can be seen from table 1, the simulation data shows that the heat exchange amount of the heat exchanger is maximum when the heat exchanger is arranged by 6, 5 and 6U tubes and the cooling and heating modes are both in a countercurrent mode, and the heat exchange amount of the heat exchanger is obviously reduced when only one of the cooling and heating modes is arranged in a countercurrent mode or is arranged in a concurrent mode. Obviously, the application can effectively improve the heat exchange quantity of the heat exchanger.
It will be readily appreciated by those skilled in the art that the above advantageous ways can be freely combined and superimposed without conflict.
The foregoing description of the preferred embodiments of the application is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the application. The foregoing is merely a preferred embodiment of the present application, and it should be noted that it will be apparent to those skilled in the art that modifications and variations can be made without departing from the technical principles of the present application, and these modifications and variations should also be regarded as the scope of the application.
Claims (12)
1. An air conditioner indoor unit comprising:
a housing (1);
the air duct is positioned inside the shell (1);
the first heat exchanger (4) is arranged in the air duct;
the air supply mechanism (3) supplies air through the air duct, and the flowing direction of air in the air duct when the air flows through the first heat exchanger (4) is opposite to the flowing direction of the refrigerant in the first heat exchanger (4);
the first heat exchanger (4) comprises an outer heat exchanger and an inner heat exchanger which are communicated with each other; the outer heat exchanger comprises a plurality of outer flow pipes; the inner row heat exchanger comprises a plurality of inner flow pipes; a first ventilation opening (21) and a second ventilation opening (22) are formed in the shell (1); the first ventilation opening (21) is positioned at the first end of the air duct, and the second ventilation opening (22) is positioned at the second end of the air duct; the first ventilation opening (21) and the second ventilation opening (22) are communicated with the air duct; the first heat exchanger (4) corresponds to the position of the second ventilation opening (22); the outer heat exchanger and the inner heat exchanger are sequentially arranged in a direction away from the second air vent (22); the air supply mechanism sucks air into the air duct from one of the first ventilation opening (21) and the second ventilation opening (22) and discharges the air from the other; the shape of the outer heat exchanger is annular, and the inner heat exchanger is positioned on the inner peripheral side of the outer heat exchanger; the second ventilation opening (22) is arranged on the side wall of the shell (1) and corresponds to the position of the outer heat exchanger;
the first heat exchanger (4) comprises a first flow path (41), a second flow path (42), a third flow path (43) and a fourth flow path (44) which are arranged in parallel with each other; the first flow path (41) comprises four outer flow pipes and two inner flow pipes which are communicated;
and/or the second flow path (42) comprises two outer flow pipes and three inner flow pipes which are communicated;
and/or, the third flow path (43) comprises three outer flow pipes and two inner flow pipes which are communicated;
and/or the fourth flow path (44) comprises two outer flow pipes and four inner flow pipes which are communicated;
the first flow path (41) comprises a first inner flow pipe, a second inner flow pipe, a first outer flow pipe, a third outer flow pipe and a fourth outer flow pipe which are sequentially connected; the first inner runner pipe is arranged below the second inner runner pipe; the first outer flow pipe, the second outer flow pipe, the third outer flow pipe and the fourth outer flow pipe are sequentially arranged from top to bottom;
and/or the second flow path (42) comprises a third inner flow pipe, a fourth inner flow pipe, a fifth outer flow pipe and a sixth outer flow pipe which are connected in sequence; the fifth outflow pipe is arranged below the sixth outflow pipe; the third inner runner pipe, the fourth inner runner pipe and the fifth inner runner pipe are sequentially arranged from top to bottom;
and/or the third flow path (43) comprises a sixth inner flow pipe, a seventh outer flow pipe, an eighth outer flow pipe and a ninth outer flow pipe which are connected in sequence; the sixth inner runner pipe is arranged below the seventh inner runner pipe; the seventh outflow pipe, the eighth outflow pipe and the ninth outflow pipe are sequentially arranged from top to bottom;
and/or the fourth flow path (44) comprises an eighth inner flow pipe, a ninth inner flow pipe, a tenth inner flow pipe, an eleventh inner flow pipe, a tenth outer flow pipe and an eleventh outer flow pipe which are connected in sequence; the tenth outflow pipe is arranged above the eleventh outflow pipe; the eighth inner flow pipe, the ninth inner flow pipe, the tenth inner flow pipe and the eleventh inner flow pipe are sequentially arranged from top to bottom;
or,
the first heat exchanger (4) comprises a first flow path (41), a second flow path (42), a third flow path (43) and a fourth flow path (44) which are arranged in parallel with each other; the first flow path (41) comprises four inner flow pipes and two outer flow pipes which are communicated;
and/or the second flow path (42) comprises two inner flow pipes and three outer flow pipes which are communicated;
and/or, the third flow path (43) comprises three inner flow pipes and two outer flow pipes which are communicated;
and/or the fourth flow path (44) comprises two inner flow pipes and four outer flow pipes which are communicated;
the first flow path (41) comprises a first inner flow pipe, a second inner flow pipe, a third inner flow pipe, a fourth inner flow pipe, a first outer flow pipe and a second outer flow pipe which are connected in sequence; the first outer flow pipe is arranged above the second outer flow pipe; the first inner runner pipe, the second inner runner pipe, the third inner runner pipe and the fourth inner runner pipe are sequentially arranged from bottom to top;
and/or the second flow path (42) comprises a fifth inner flow pipe, a sixth inner flow pipe, a third outer flow pipe, a fourth outer flow pipe and a fifth outer flow pipe which are connected in sequence; the fifth outer flow pipe is arranged above the sixth inner flow pipe; the third outflow pipe, the fourth outflow pipe and the fifth outflow pipe are sequentially arranged from bottom to top;
and/or the third flow path (43) comprises a seventh inner flow pipe, an eighth inner flow pipe, a ninth inner flow pipe, a sixth outer flow pipe and a seventh outer flow pipe which are connected in sequence; the sixth outer flow pipe is arranged above the seventh outer flow pipe; the seventh inner flow pipe, the eighth inner flow pipe and the ninth inner flow pipe are sequentially arranged from bottom to top;
and/or the fourth flow path (44) comprises a tenth inner flow pipe, an eleventh inner flow pipe, an eighth outer flow pipe, a ninth outer flow pipe, a tenth outer flow pipe and an eleventh outer flow pipe which are connected in sequence; the tenth inner flow pipe is arranged above the eleventh inner flow pipe; the eighth outflow pipe, the ninth outflow pipe, the tenth outflow pipe and the eleventh outflow pipe are sequentially arranged from bottom to top;
the plurality of inner flow pipes are U-shaped pipes; and/or, the plurality of outflow through pipes are U-shaped pipes.
2. An air conditioner indoor unit according to claim 1, wherein the inner row of heat exchangers is annular in shape.
3. The air conditioner indoor set according to claim 1, wherein the second ventilation opening (22) is provided at a lower portion of the casing (1);
and/or the first ventilation opening (21) is arranged at the top end of the shell (1).
4. An air conditioner indoor unit according to claim 1, wherein the first heat exchanger (4) comprises at least two flow paths arranged in parallel with each other, each flow path comprising at least one outer flow pipe and at least one inner flow pipe in communication with each other.
5. An air conditioner indoor unit according to claim 4, wherein the total number of outer flow pipes in the first heat exchanger (4) is the same as the total number of inner flow pipes.
6. An air conditioner indoor unit according to claim 1, wherein the first heat exchanger (4) is provided with a first port and a second port; the first port is used for communicating a four-way valve with the first heat exchanger (4), and the second port is used for communicating a throttling element with the first heat exchanger (4); the first port is arranged on the outer heat exchanger, and the second port is arranged on the inner heat exchanger.
7. The air conditioner indoor unit according to claim 1, wherein the first flow path (41) is provided with a first flow hole (411) and a second flow hole (412); the first flow hole (411) is positioned on the outer flow pipe, and the second flow hole (412) is positioned on the inner flow pipe; the first flow hole (411) is used for communicating a four-way valve with the first heat exchanger (4), and the second flow hole (412) is used for communicating a throttling element with the first heat exchanger (4);
and/or, a third flow hole (421) and a fourth flow hole (422) are arranged on the second flow path (42), the third flow hole (421) is positioned on the outer flow pipe, and the fourth flow hole (422) is positioned on the inner flow pipe; the third flow hole (421) is used for communicating a four-way valve with the first heat exchanger (4), and the fourth flow hole (422) is used for communicating a throttling element with the first heat exchanger (4);
and/or, a fifth flow hole (431) and a sixth flow hole (432) are arranged on the third flow path (43), the fifth flow hole (431) is positioned on the outer flow pipe, and the sixth flow hole (432) is positioned on the inner flow pipe; the fifth flow hole (431) is used for communicating a four-way valve with the first heat exchanger (4), and the sixth flow hole (432) is used for communicating a throttling element with the first heat exchanger (4);
and/or, a seventh flow hole (441) and an eighth flow hole (442) are arranged on the fourth flow path (44), the seventh flow hole (441) is positioned on the outer flow pipe, and the eighth flow hole (442) is positioned on the inner flow pipe; the seventh flow hole (441) is used for communicating a four-way valve with the first heat exchanger (4), and the eighth flow hole (442) is used for communicating a throttling element with the first heat exchanger (4).
8. The air conditioner indoor set according to claim 7, wherein the first flow path (41), the second flow path (42), the third flow path (43) and the fourth flow path (44) are provided in this order from top to bottom;
and/or the first flow hole (411) is located higher than the second flow hole (412); the third flow hole (421) is located higher than the fourth flow hole (422); the fifth flow hole (431) is located higher than the sixth flow hole (432); the seventh flow hole (441) is located higher than the eighth flow hole (442);
and/or the first flow hole (411) is located lower than the second flow hole (412); the third flow hole (421) is located lower than the fourth flow hole (422); the fifth flow hole (431) is located lower than the sixth flow hole (432); the seventh flow hole (441) is located lower than the eighth flow hole (442).
9. An air conditioner comprising an air conditioner indoor unit according to any one of claims 1 to 8.
10. The air conditioner as set forth in claim 9, further comprising: the air conditioner comprises a compressor, a four-way valve, a throttling element and a second heat exchanger, wherein an exhaust port of the compressor is communicated to a first valve port of the four-way valve, a second valve port of the four-way valve is communicated to a first port of a first heat exchanger (4), a third valve port of the four-way valve is communicated to an air suction port of the compressor, a fourth valve port of the four-way valve is communicated to a second heat exchanger, a first end of the throttling element is communicated to a second port of the first heat exchanger (4), a second end of the throttling element is communicated with the second heat exchanger, and the four-way valve controls the flow direction of refrigerant through reversing so that the air conditioner is switched between a refrigerating mode and a heating mode.
11. A control method of an air conditioner as set forth in any one of claims 9 to 10, comprising:
detecting the working mode of the air conditioner; wherein, the working modes comprise a heating mode and a refrigerating mode;
and controlling the air supply direction of the air supply mechanism (3) according to the working mode of the air conditioner.
12. The method according to claim 11, wherein the step of controlling the air blowing direction of the air blowing mechanism (3) according to the operation mode of the air conditioner includes:
when the air conditioner is in a refrigerating mode, a refrigerant enters the first heat exchanger (4) through the second port and flows out of the first port, and the air supply mechanism (3) is controlled to suck air into the air channel from the second air vent (22) and discharge the air from the first air vent (21);
when the air conditioner is in a heating mode, the refrigerant enters the first heat exchanger (4) through the first port and flows out from the second port, and the air supply mechanism (3) is controlled to suck air into the air channel from the first ventilation opening (21) and discharge the air from the second ventilation opening (22).
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