CN106556067B - Indoor unit assembly of two-control multi-split air conditioner and two-control multi-split air conditioner with indoor unit assembly - Google Patents
Indoor unit assembly of two-control multi-split air conditioner and two-control multi-split air conditioner with indoor unit assembly Download PDFInfo
- Publication number
- CN106556067B CN106556067B CN201611088140.4A CN201611088140A CN106556067B CN 106556067 B CN106556067 B CN 106556067B CN 201611088140 A CN201611088140 A CN 201611088140A CN 106556067 B CN106556067 B CN 106556067B
- Authority
- CN
- China
- Prior art keywords
- indoor
- air conditioner
- indoor unit
- heat exchange
- pipeline
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000007791 dehumidification Methods 0.000 claims abstract description 38
- 239000007788 liquid Substances 0.000 claims abstract description 36
- 238000010438 heat treatment Methods 0.000 claims abstract description 8
- 239000003507 refrigerant Substances 0.000 claims description 63
- 238000004781 supercooling Methods 0.000 claims description 14
- 238000001816 cooling Methods 0.000 claims description 3
- 230000009467 reduction Effects 0.000 abstract description 6
- 238000004378 air conditioning Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- 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
-
- 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
-
- 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
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses an indoor unit assembly of a two-pipe multi-split air conditioner and the two-pipe multi-split air conditioner with the indoor unit assembly, wherein the indoor unit assembly comprises: a gas-liquid separator; a first pipeline and a second pipeline; a subcooling heat exchanger; the indoor unit comprises an indoor heat exchanger, first to fourth electromagnetic valves and a one-way control valve, wherein the indoor heat exchanger comprises a first heat exchange part and a second heat exchange part, a dehumidification control valve which is constructed to be completely conducted when the indoor heat exchanger is used for refrigerating or heating and is used as a throttling pressure reduction element when the indoor heat exchanger is used for dehumidifying is connected in series between the first end of the first heat exchange part and the first end of the second heat exchange part, an indoor throttling element is connected in series between the first end of the first electromagnetic valve and the second end of the first heat exchange part, and the second end of the first electromagnetic valve is connected with a gas outlet; and the fourth electromagnetic valve is respectively connected with the first pipeline and the indoor throttling element. The indoor unit assembly of the two-pipe multi-split air conditioner can realize the constant temperature dehumidification function of the two-pipe multi-split air conditioner.
Description
Technical Field
The invention relates to the field of refrigeration, in particular to an indoor unit assembly of a two-pipe multi-split air conditioner and the two-pipe multi-split air conditioner with the indoor unit assembly.
Background
Humidity in the air is everywhere, and when the humidity is very high, people easily feel sultry, and the comfort is poor. Meanwhile, condensation is easy to appear on the surfaces of various articles, so that the oxidation speed of metal products is accelerated, and the reliability of electronic devices is reduced. In addition, the high humidity environment can cause a great amount of mold growth, damage to furniture and clothes and threaten human health. The mold can grow when the relative humidity of the environment is more than 60 percent, and the mold is a high-incidence environment when the humidity is more than 85 percent.
When the air conditioning system in the related art meets the dehumidification requirement, two schemes are generally adopted, namely, the air supply speed of an indoor unit is reduced or the caliber of a throttle valve is reduced, so that the evaporation temperature is reduced, the sensible and latent heat ratio is reduced, the dehumidification purpose is finally achieved, and the reduction of the room temperature is slowed down to a certain extent. However, the scheme reduces the output capacity of the system while dehumidifying, and is easy to cause the drop of indoor temperature and frequent start and stop of the machine, so that the comfort and energy conservation are reduced, the dehumidification capacity is small, and the dehumidification requirement of a user on the indoor environment is difficult to meet; and secondly, constant temperature dehumidification is adopted, namely an evaporator is divided into a dehumidification part and a heating part. The air is firstly cooled and dehumidified under the work of the dehumidification part of the evaporator, and then the dry and cold air is heated to a proper temperature under the work of the heating part of the evaporator, so that constant temperature dehumidification is realized.
In the multi-split air conditioner in the related art, only the three-pipe heat recovery system can be connected with the constant-temperature dehumidification indoor unit, and the two-pipe multi-split air recovery system cannot use the constant-temperature dehumidification indoor unit at present.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, the invention provides the indoor unit assembly of the two-pipe multi-split air conditioner, which can realize the constant temperature dehumidification function of the two-pipe multi-split air conditioner.
The invention also provides a two-pipe multi-split air conditioner which comprises the indoor unit assembly.
The indoor unit assembly of the two-pipe multi-split air conditioner according to the embodiment of the invention comprises: a gas-liquid separator comprising an inlet, a gas outlet and a liquid outlet, the inlet being connected to the discharge port; the first pipeline is connected with the liquid outlet, the second pipeline is suitable for being connected with the discharge port, and the first pipeline and the second pipeline are respectively connected with a first control valve in series; the supercooling heat exchanger is provided with a first refrigerant channel and a second refrigerant channel which exchange heat with each other, the first refrigerant channel is connected in series on the first pipeline, and the second refrigerant channel is connected in series on the second pipeline; an indoor unit, which comprises an indoor heat exchanger, first to fourth solenoid valves and a one-way control valve, wherein the indoor heat exchanger comprises a first heat exchange part and a second heat exchange part, a dehumidification control valve is connected in series between a first end of the first heat exchange part and a first end of the second heat exchange part, the dehumidification control valve is configured to be fully conducted when the indoor heat exchanger is used for refrigerating or heating and to serve as a throttling and pressure reducing element when the indoor heat exchanger is used for dehumidifying, an indoor throttling element is connected in series between a first end of the first solenoid valve and a second end of the first heat exchange part, and the second end of the first solenoid valve is connected with the gas outlet; two ends of the second electromagnetic valve are respectively connected with the second end of the second heat exchange part and the gas outlet; a first end of a third solenoid valve is suitable for being connected with the discharge port, and a second end of the third solenoid valve is connected with a second end of the second heat exchange part; the fourth electromagnetic valve is respectively connected with the first pipeline and the indoor throttling element; the one-way control valve is connected with the second pipeline and the indoor throttling element and guides the refrigerant to the indoor throttling element in a one-way mode.
According to the indoor unit assembly of the two-pipe multi-split air conditioner, the first electromagnetic valve, the fourth electromagnetic valve and the dehumidification control valve are arranged on the indoor unit, so that the constant temperature dehumidification function of the two-pipe multi-split air conditioner is achieved.
According to some embodiments of the invention, the one-way control valve is a one-way valve.
Further, the indoor unit is plural.
Further, the indoor throttling element is an electronic expansion valve.
Specifically, the number of the supercooling heat exchangers is two, and the first control valve on the first pipeline is positioned between the supercooling heat exchangers.
The two-pipe multi-split air conditioner according to the embodiment of the invention comprises the indoor unit assembly.
According to the two-pipe multi-split air conditioner, the indoor unit assembly is arranged, so that the constant temperature dehumidification function of the two-pipe multi-split air conditioner is achieved.
Drawings
FIGS. 1a-1b are schematic diagrams of two managed multi-split air-conditioning systems according to various embodiments of the invention.
Reference numerals:
two-pipe multi-connected unit 100;
an outdoor unit 1; a compressor 11; an outdoor heat exchanger 12; a liquid storage tank 13; a four-way valve 14; a check valve 15; a discharge port 16; a discharge port 17; a gas-liquid separator 20; an inlet 201; a gas outlet 202; a liquid outlet 203; a first pipe 21; a second conduit 22; a first control valve 23; a subcooling heat exchanger 24; a first refrigerant passage 241; a second refrigerant passage 242; an indoor heat exchanger 250; a first heat exchange portion 2501; a second heat exchange portion 2502; a first solenoid valve 251; a second solenoid valve 252; a third electromagnetic valve 253; a fourth solenoid valve 254; a one-way control valve 255; an indoor restriction element 256; a dehumidification control valve 257.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "upper", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The indoor unit assembly of the two-pipe multi-split air conditioner 100 according to the embodiment of the invention is described below with reference to fig. 1a to 1 b. Here, the two-pipe multi-split air conditioner 100 includes an outdoor unit 1, and the outdoor unit 1 has a discharge port 17 and a discharge port 16. The outdoor unit 1 further includes: the air conditioner comprises a compressor 11, an outdoor heat exchanger 12, a liquid storage tank 13, a four-way valve 14 and four one-way valves 15. Thereby ensuring the stability and reliability of the outdoor unit 1 and the indoor unit when they are matched with each other.
As shown in fig. 1a-1b, an indoor unit assembly of a two-pipe multi-split air conditioner 100 according to an embodiment of the present invention includes: a gas-liquid separator 20, a first line 21, a second line 22, a supercooling heat exchanger 24, and an indoor unit. It should be noted that, one or more indoor units may be provided, and when there are a plurality of indoor units, the operation modes of the plurality of indoor units may be the same or different, for example, the plurality of indoor units may be in a cooling mode at the same time, or one of the plurality of indoor units may be in a constant temperature dehumidification mode and the others are in a cooling mode/heating mode.
Specifically, the gas-liquid separator 20 includes an inlet 201, a gas outlet 202, and a liquid outlet 203, and the inlet 201 is connected to the discharge port 17. As can be seen from this, the refrigerant discharged from the outdoor unit 1 first enters the gas-liquid separator 20 through the discharge port 17 to separate the refrigerant into gas and liquid, thereby ensuring the reliability of the two-pipe multi-split air conditioner 100.
The first line 21 is connected to a second line 22, the first line 21 is connected to a liquid outlet 203, the second line 22 is adapted to be connected to the discharge port 16, and a first control valve 23 is connected in series to each of the first line 21 and the second line 22. The flow paths of the refrigerant through the first and second pipes 21 and 22 can be controlled by the first control valve 23.
The supercooling heat exchanger 24 has a first refrigerant passage 241 and a second refrigerant passage 242 for exchanging heat with each other, the first refrigerant passage 241 is connected in series to the first pipeline 21, and the second refrigerant passage 242 is connected in series to the second pipeline 22. Therefore, the refrigerant on the first pipeline 21 and the refrigerant on the second pipeline 22 can be subjected to heat exchange and temperature reduction, and the working efficiency of the two-pipe multi-split air conditioner 100 is improved.
The indoor unit includes an indoor heat exchanger 250, first to fourth solenoid valves 251 to 254, and a one-way control valve 255. The indoor heat exchanger 250 includes a first heat exchange portion 2501 and a second heat exchange portion 2502, a dehumidification control valve 257 is connected in series between a first end of the first heat exchange portion 2501 and a first end of the second heat exchange portion 2502, and the dehumidification control valve 257 is configured to be fully turned on when the indoor heat exchanger 250 cools or heats and to serve as a throttling pressure reduction element when the indoor heat exchanger 250 dehumidifies. Therefore, when the indoor unit dehumidifies, the dehumidification control valve 257 can throttle and depressurize the refrigerant in the indoor heat exchanger 250, thereby improving the dehumidification efficiency of the two-pipe multi-split air conditioner 100.
An indoor throttling element 256 is connected in series between a first end of the first solenoid valve 251 and a second end of the first heat exchange portion 2501, and a second end of the first solenoid valve 251 is connected with the gas outlet 202. Therefore, the indoor throttling element 256 can throttle and reduce the pressure of the refrigerant passing through the first electromagnetic valve 251, and the heat exchange efficiency of the indoor heat exchanger 250 is improved. The second solenoid valve 252 has both ends connected to the second end of the second heat exchanging portion 2502 and the gas outlet 202, respectively, a first end of the third solenoid valve 253 adapted to be connected to the discharge port 16, a second end of the third solenoid valve 253 connected to the second end of the second heat exchanging portion 2502, and a fourth solenoid valve 254 connected to the first pipe 21 and the indoor throttle member 256, respectively.
The check valve 255 is connected to the second pipe 22 and the indoor throttling element 256 and guides the refrigerant to the indoor throttling element 256 in a single direction. Thereby ensuring the flow rate of the refrigerant flowing into the indoor heat exchanger 250 in unit time and improving the working stability of the two-pipe multi-split air conditioner 100. It will be appreciated that the indoor unit may also include an indoor fan that directs indoor air to the indoor heat exchanger 250.
Specifically, when the indoor unit is cooled, the third solenoid valve 253 is opened, and the first solenoid valve 251, the second solenoid valve 252, and the fourth solenoid valve 254 are closed. The refrigerant is discharged from the discharge port 17 of the outdoor unit 1 and flows into the gas-liquid separator 20, the refrigerant is gas-liquid separated in the gas-liquid separator 20, and the separated liquid refrigerant flows into the first pipe line 21 through the liquid outlet 203. At this time, the first control valve 23 on the first pipeline 21 is fully opened, and the first control valve 23 on the second pipeline 22 throttles part of the refrigerant to provide the supercooling degree for the refrigerant in the main path of the supercooling heat exchanger 24. The refrigerant passes through the first refrigerant channel 241 of the supercooling heat exchanger 24 and then flows into the indoor heat exchanger 250 under the guiding action of the one-way control valve 255. In the indoor heat exchanger 250, the indoor throttling element 256 first throttles and depressurizes the refrigerant. The throttled and depressurized refrigerant evaporates and absorbs heat in the first heat exchange portion 2501 to cool the indoor air, and then enters the second heat exchange portion 2502 through the fully-communicated dehumidification control valve 257 to continue to evaporate and absorb heat, so as to further cool the indoor air. The heat-exchanged refrigerant flows to the discharge port 16 through the third solenoid valve 253, and flows back to the outdoor unit 1. Completing the refrigeration cycle of the two-pipe multi-split air conditioner 100.
When the indoor unit heats, the second and fourth solenoid valves 252 and 254 are opened, and the first and third solenoid valves 251 and 253 are closed. The refrigerant is discharged from the discharge port 17 of the outdoor unit 1 and flows to the gas-liquid separator 20, the refrigerant is gas-liquid separated in the gas-liquid separator 20, the separated gaseous refrigerant flows out through the gas outlet 202, and the gaseous refrigerant passes through the second solenoid valve 252 and then enters the indoor heat exchanger 250. The refrigerant is condensed and released heat in the second heat exchange portion 2502 to heat the indoor air, and then enters the first heat exchange portion 2501 through the fully-communicated dehumidification control valve 257 to continue to be condensed and released heat, so as to further heat the indoor air. The heat-exchanged refrigerant is throttled and depressurized by the indoor throttling element 256 and flows out of the indoor heat exchanger 250, at this time, the first control valve 23 on the first pipeline 21 is closed, the first control valve 23 on the second pipeline 22 is opened, the refrigerant flows to the first refrigerant channel 241 of the supercooling heat exchanger 24 through the fourth electromagnetic valve 254, flows to the second refrigerant channel 242 of the supercooling heat exchanger 24 through the first control valve 23 on the second pipeline 22, and finally flows to the discharge port 16, so as to flow back to the outdoor unit 1. Completing the heating cycle of the two-pipe multi-split air conditioner 100.
When the indoor unit dehumidifies at a constant temperature, the first solenoid valve 251 and the third solenoid valve 253 are opened, the second solenoid valve 252 is closed, and the dehumidification control valve 257 is a throttling pressure reduction element. The refrigerant is discharged from the discharge port 17 of the outdoor unit 1 and flows to the gas-liquid separator 20, the refrigerant is gas-liquid separated in the gas-liquid separator 20, the separated gas refrigerant flows out through the gas outlet 202, and the gas refrigerant passes through the first solenoid valve 251 and then enters the indoor heat exchanger 250. Because the refrigerant that flows to indoor throttling element 256 is gaseous refrigerant, therefore indoor throttling element 256 mainly plays the purpose of regulation flow, gaseous refrigerant is condensed at first heat transfer part 2501 and is exothermic in order to heat the air after being cooled by second heat transfer part 2502, heat the return air to required air-out temperature, the refrigerant is condensed into liquid simultaneously, then after the refrigerant passes through the effect of the throttle step-down of dehumidification control valve 257, liquid refrigerant enters second heat transfer part 2502, evaporate the heat absorption in order to reduce the temperature of indoor moist air at second heat transfer part 2502, then vapor liquefies into the water droplet when meeting the cold, thereby indoor constant temperature dehumidification purpose has been reached. The heat-exchanged refrigerant flows to the discharge port 16 through the third solenoid valve 253, and then flows back to the outdoor unit 1. Completing the constant temperature dehumidification cycle of the two-pipe multi-split air conditioner 100.
When the indoor unit dehumidifies at a constant temperature, the indoor fan blows air to the second heat exchange portion 2502 to dehumidify the air, and then the dehumidified air flows to the first heat exchange portion 2501 to heat the air.
According to the indoor unit assembly of the two-pipe multi-split air conditioner 100 of the embodiment of the invention, the first electromagnetic valve 251, the fourth electromagnetic valve 254 and the dehumidification control valve 257 are arranged in the indoor unit, so that the constant temperature dehumidification function of the two-pipe multi-split air conditioner 100 is realized.
According to some embodiments of the invention, the one-way control valve 255 is a one-way valve. Therefore, the check valve not only can guide the refrigerant to the indoor throttling element 256, but also can prevent the refrigerant flowing through the check valve from generating a backflow phenomenon, so that the structure of the check valve 255 is simple, and the reliability of the operation of the two-pipe multi-split air conditioner 100 is improved.
Optionally, the indoor throttling element 256 is an electronic expansion valve. Thereby ensuring the accuracy and stability of the throttling depressurization of the indoor throttling element 256.
According to some embodiments of the present invention, there are two subcooling heat exchangers 24 and the first control valve 23 on the first line 21 is located between the subcooling heat exchangers 24. Therefore, when the indoor unit heats, the liquid refrigerant discharged from the indoor throttling element 256 can also obtain a certain supercooling degree, and the reliability of the two-pipe multi-split air conditioner 100 is ensured.
The two-pipe multi-split air conditioner 100 according to the embodiment of the invention includes the indoor unit assembly.
According to the two-pipe multi-split air conditioner 100 of the embodiment of the invention, the indoor unit assembly of the two-pipe multi-split air conditioner 100 according to the embodiment of the invention is arranged, so that the constant temperature dehumidification function of the two-pipe multi-split air conditioner 100 is realized.
The structure of the indoor unit assembly of the two-pipe multi-split air conditioner 100 according to an embodiment of the present invention will be described in detail with reference to fig. 1 a. However, it should be noted that the following description is only exemplary, and it is obvious that a person skilled in the art after reading the following technical solutions of the present invention can combine, replace, modify the technical solutions or some technical features thereof, and this also falls into the protection scope of the present invention.
As shown in fig. 1a, the two-pipe multi-split air conditioner 100 includes an outdoor unit 1, and the outdoor unit 1 has a discharge port 17 and a discharge port 16. The outdoor unit 1 further includes: the air conditioner comprises a compressor 11, an outdoor heat exchanger 12, a liquid storage tank 13, a four-way valve 14 and four one-way valves 15. The indoor unit assembly of the two-pipe multi-split air conditioner 100 according to the embodiment of the invention comprises: a gas-liquid separator 20, a first line 21, a second line 22, a supercooling heat exchanger 24, and an indoor unit.
The gas-liquid separator 20 includes an inlet 201, a gas outlet 202, and a liquid outlet 203, the inlet 201 being connected to the discharge port 17. The second line 22 is connected to the first line 21, the first line 21 is connected to the liquid outlet 203, the second line 22 is adapted to be connected to the discharge port 16, and the first control valve 23 is connected in series to the first line 21 and the second line 22, respectively. The supercooling heat exchanger 24 is provided with two first refrigerant channels 241 and two second refrigerant channels 242 for exchanging heat with each other, the first refrigerant channels 241 are connected in series to the first pipeline 21, and the second refrigerant channels 242 are connected in series to the second pipeline 22. A first control valve 23 on the first line 21 is located between the two subcooling heat exchangers 24.
The number of the indoor units is two, and each indoor unit includes an indoor heat exchanger 250, first to fourth solenoid valves 251 to 254, and a one-way control valve 255.
The indoor heat exchanger 250 includes a first heat exchange portion 2501 and a second heat exchange portion 2502, a dehumidification control valve 257 is connected in series between a first end of the first heat exchange portion 2501 and a first end of the second heat exchange portion 2502, and the dehumidification control valve 257 is configured to be fully turned on when the indoor heat exchanger 250 cools or heats and to serve as a throttling pressure reduction element when the indoor heat exchanger 250 dehumidifies.
An indoor throttling element 256 is connected in series between a first end of the first solenoid valve 251 and a second end of the first heat exchange portion 2501, the indoor throttling element 256 is an electronic expansion valve, and the second end of the first solenoid valve 251 is connected with the gas outlet 202. Both ends of the second solenoid valve 252 are connected to a second end of the second heat exchanging part 2502 and the gas outlet 202, respectively. A first end of the third solenoid valve 253 is adapted to be connected to the discharge port 16, and a second end of the third solenoid valve 253 is connected to a second end of the second heat exchanging portion 2502. A fourth solenoid valve 254 is connected to the first line 21 and the indoor restriction 256, respectively. The check valve 255 is a check valve, and the check valve 255 is connected to the second pipe 22 and the indoor throttling element 256 and guides the refrigerant to the indoor throttling element 256 in a single direction.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (5)
1. An indoor unit assembly of a two-pipe multi-split air conditioner, the two-pipe multi-split air conditioner comprising an outdoor unit having a discharge port and a discharge port, the indoor unit assembly comprising:
a gas-liquid separator comprising an inlet, a gas outlet and a liquid outlet, the inlet being connected to the discharge port;
the first pipeline is connected with the liquid outlet, the second pipeline is suitable for being connected with the discharge port, and the first pipeline and the second pipeline are respectively connected with a first control valve in series;
the supercooling heat exchanger is provided with a first refrigerant channel and a second refrigerant channel which exchange heat with each other, the first refrigerant channel is connected in series on the first pipeline, and the second refrigerant channel is connected in series on the second pipeline;
a plurality of indoor units, each of which includes an indoor heat exchanger, first to fourth solenoid valves, a one-way control valve, the indoor heat exchanger including a first heat exchange part and a second heat exchange part, a dehumidification control valve being connected in series between a first end of the first heat exchange part and a first end of the second heat exchange part, the dehumidification control valve being configured to be fully conductive when the indoor heat exchanger is cooling or heating and to serve as a throttling and pressure-reducing element when the indoor heat exchanger is dehumidifying, an indoor throttling element being connected in series between a first end of the first solenoid valve and a second end of the first heat exchange part, the second end of the first solenoid valve being connected to the gas outlet; two ends of the second electromagnetic valve are respectively connected with the second end of the second heat exchange part and the gas outlet; a first end of a third solenoid valve is suitable for being connected with the discharge port, and a second end of the third solenoid valve is connected with a second end of the second heat exchange part; the fourth electromagnetic valve is respectively connected with the first pipeline and the indoor throttling element; the one-way control valve is connected with the second pipeline and the indoor throttling element and guides the refrigerant to the indoor throttling element in a one-way mode;
the indoor unit further comprises an indoor fan, the indoor fan guides indoor air to the indoor heat exchanger, when the indoor unit dehumidifies at constant temperature, the indoor fan blows air to the second heat exchange part for dehumidification, and then the dehumidified air flows to the first heat exchange part for heating.
2. The indoor unit assembly of two-pipe multi-split air conditioner according to claim 1, wherein the check valve is a check valve.
3. The assembly of a two-pipe multi-split indoor unit of claim 1, wherein the indoor throttling element is an electronic expansion valve.
4. The indoor unit assembly of two-pipe multi-split air conditioner according to claim 1, wherein there are two subcooling heat exchangers, and the first control valve on the first pipe is located between the subcooling heat exchangers.
5. A two-pipe multi-split air conditioner, characterized by comprising the indoor unit assembly according to any one of claims 1-4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611088140.4A CN106556067B (en) | 2016-11-30 | 2016-11-30 | Indoor unit assembly of two-control multi-split air conditioner and two-control multi-split air conditioner with indoor unit assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611088140.4A CN106556067B (en) | 2016-11-30 | 2016-11-30 | Indoor unit assembly of two-control multi-split air conditioner and two-control multi-split air conditioner with indoor unit assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106556067A CN106556067A (en) | 2017-04-05 |
| CN106556067B true CN106556067B (en) | 2020-10-13 |
Family
ID=58445508
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611088140.4A Active CN106556067B (en) | 2016-11-30 | 2016-11-30 | Indoor unit assembly of two-control multi-split air conditioner and two-control multi-split air conditioner with indoor unit assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106556067B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107192160B (en) * | 2017-07-25 | 2024-12-03 | 胡少林 | Air conditioner dehumidifier combined device |
| CN112710100B (en) * | 2019-10-24 | 2024-06-21 | 广东美的制冷设备有限公司 | Air conditioner and control method thereof |
| CN112710101B (en) * | 2019-10-24 | 2024-06-21 | 广东美的制冷设备有限公司 | Air conditioner and control method thereof |
| CN111811035A (en) * | 2020-07-22 | 2020-10-23 | 南京天加环境科技有限公司 | Dehumidification and reheating unit type air conditioning system and control method thereof |
| CN111811036A (en) * | 2020-07-22 | 2020-10-23 | 南京天加环境科技有限公司 | Dehumidification and reheating multi-connected air conditioning system and control method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200965364Y (en) * | 2006-09-30 | 2007-10-24 | 四川长虹电器股份有限公司 | Constant temperature and dehumidification split-type heat pump air conditioning unit |
| CN101149168A (en) * | 2006-09-21 | 2008-03-26 | 海尔集团公司 | Temperature-fixing dehumidifying air conditioner and control method thereof |
| US20130055736A1 (en) * | 2011-09-01 | 2013-03-07 | Steve Eugene Everett | Method and apparatus for climatic conditioning of space within a building structure |
| CN104748262A (en) * | 2015-03-31 | 2015-07-01 | 广东美的暖通设备有限公司 | Multi-split system |
-
2016
- 2016-11-30 CN CN201611088140.4A patent/CN106556067B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101149168A (en) * | 2006-09-21 | 2008-03-26 | 海尔集团公司 | Temperature-fixing dehumidifying air conditioner and control method thereof |
| CN200965364Y (en) * | 2006-09-30 | 2007-10-24 | 四川长虹电器股份有限公司 | Constant temperature and dehumidification split-type heat pump air conditioning unit |
| US20130055736A1 (en) * | 2011-09-01 | 2013-03-07 | Steve Eugene Everett | Method and apparatus for climatic conditioning of space within a building structure |
| CN104748262A (en) * | 2015-03-31 | 2015-07-01 | 广东美的暖通设备有限公司 | Multi-split system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106556067A (en) | 2017-04-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106556067B (en) | Indoor unit assembly of two-control multi-split air conditioner and two-control multi-split air conditioner with indoor unit assembly | |
| JP6685409B2 (en) | Air conditioner | |
| US8117855B2 (en) | Refrigeration system with consecutive expansions and method | |
| CN107178833B (en) | Heat recovery external machine system and air conditioning system | |
| CN110462300B (en) | Modular water side economizer for air cooled chiller | |
| CN210832604U (en) | Air conditioner | |
| AU2017218845B2 (en) | Improvements in and relating to air conditioning | |
| CN107089113A (en) | Vehicle air conditioner and the vehicle with it | |
| CN112161324B (en) | Air conditioner | |
| CN105627470B (en) | A kind of air-conditioner set based on supercooling reheating | |
| CN210832213U (en) | Air conditioner | |
| CN112378004A (en) | Air conditioning apparatus | |
| CN104797887A (en) | Air conditioning device, and design method therefor | |
| KR101679574B1 (en) | Air conditioner | |
| US9032756B2 (en) | Air conditioner | |
| CN106766332B (en) | Air conditioning system unit and air conditioning system | |
| CN112577101B (en) | Air conditioner and control method thereof | |
| CN113432185A (en) | Cold and hot air conditioning system and single cold air conditioning system | |
| CN113173047B (en) | Thermal management system | |
| CN210801390U (en) | Constant temperature and humidity air conditioner | |
| CN214249790U (en) | Multi-split air conditioner | |
| CN110207417B (en) | Air conditioning system | |
| CN113551306A (en) | Air conditioner with double heat exchangers and control method thereof | |
| CN112797660A (en) | Air conditioner and control method thereof | |
| KR20140089796A (en) | Air conditioner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |