CN210832267U - Air conditioner indoor unit and air conditioner - Google Patents
Air conditioner indoor unit and air conditioner Download PDFInfo
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- CN210832267U CN210832267U CN201921827307.3U CN201921827307U CN210832267U CN 210832267 U CN210832267 U CN 210832267U CN 201921827307 U CN201921827307 U CN 201921827307U CN 210832267 U CN210832267 U CN 210832267U
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Abstract
The utility model discloses an air-conditioning indoor unit and an air conditioner, wherein, the air-conditioning indoor unit comprises at least three indoor heat exchangers, a first indoor heat exchanger is provided with a first through opening and a second through opening, the first through opening is configured to be communicated with a liquid pipe, and the second through opening is configured to be communicated with a high-low pressure pipe and/or a gas pipe; the second indoor heat exchanger is provided with a third through hole and a fourth through hole, the third through hole is communicated with the liquid pipe, and the fourth through hole is communicated with the high-low pressure pipe and/or the gas pipe; the third through hole is communicated with the liquid pipe through a second refrigerant pipe, and a second indoor throttling device is arranged on the second refrigerant pipe; the third indoor heat exchanger is provided with a fifth through hole and a sixth through hole, the fifth through hole is configured to be communicated with the liquid pipe, and the sixth through hole is configured to be communicated with the high-pressure pipe and the low-pressure pipe and/or the air pipe; the fifth through hole is communicated with a liquid pipe of the air conditioner through a third refrigerant pipe, and a third indoor throttling device is arranged on the third refrigerant pipe. The utility model discloses technical scheme improves air conditioner adaptability.
Description
Technical Field
The utility model relates to an air conditioning technology field, in particular to machine and air conditioner in air conditioning.
Background
Along with the improvement of living standard of people, people are more and more common to the use of air conditioner, and simultaneously, people also put forward higher demand to the air conditioner. The existing air-conditioning indoor unit has the advantages that due to the fixed arrangement of the indoor heat exchanger, the heat exchange area is fixed and not adjustable, so that the adjustable temperature range of the air conditioner is small in the temperature adjusting process, and the requirements of users cannot be met.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an indoor unit of air conditioner aims at improving the adaptability of air conditioner.
In order to achieve the above purpose, the indoor unit of the air conditioner provided by the utility model comprises at least three indoor heat exchangers, namely a first indoor heat exchanger, a second indoor heat exchanger and a third indoor heat exchanger, wherein,
the first indoor heat exchanger is provided with a first through hole and a second through hole for allowing refrigerant to enter or flow out of the first indoor heat exchanger, the first through hole is configured to be communicated with a liquid pipe of the air conditioner, and the second through hole is configured to be communicated with a high-low pressure pipe of the air conditioner and/or configured to be communicated with an air pipe of the air conditioner;
the second indoor heat exchanger is provided with a third through hole and a fourth through hole for allowing refrigerant to enter or flow out of the second indoor heat exchanger, the third through hole is configured to be communicated with a liquid pipe of the air conditioner, and the fourth through hole is configured to be communicated with a high-low pressure pipe of the air conditioner and/or configured to be communicated with an air pipe of the air conditioner; the third through hole is communicated with a liquid pipe of the air conditioner through a second refrigerant pipe, and a second indoor throttling device is arranged on the second refrigerant pipe;
the third indoor heat exchanger is provided with a fifth through hole and a sixth through hole for allowing refrigerant to enter or flow out of the third indoor heat exchanger, the fifth through hole is configured to be communicated with a liquid pipe of the air conditioner, and the sixth through hole is configured to be communicated with a high-low pressure pipe of the air conditioner and/or configured to be communicated with an air pipe of the air conditioner; the fifth through hole is communicated with a liquid pipe of the air conditioner through a third refrigerant pipe, and a third indoor throttling device is arranged on the third refrigerant pipe.
Optionally, the first opening is communicated with a liquid pipe of the air conditioner through a first refrigerant pipe, and a first indoor throttling device is arranged on the first refrigerant pipe.
Optionally, the air conditioner further comprises a first four-way valve, and the liquid pipe is respectively communicated with the first refrigerant pipeline, the second refrigerant pipe and the third refrigerant pipe through the first four-way valve.
Optionally, the second through port is communicated with a high-low pressure pipe of the air conditioner through a first connecting pipe, and a first control valve is arranged on the first connecting pipe;
the second through port is communicated with an air pipe of the air conditioner through a second connecting pipe, and a second control valve is arranged on the second connecting pipe.
Optionally, the fourth through port is communicated with a high-low pressure pipe of the air conditioner through a third connecting pipe, and a third control valve is arranged on the third connecting pipe;
the fourth through hole is communicated with an air pipe of the air conditioner through a fourth connecting pipe, and a fourth control valve is arranged on the fourth connecting pipe.
Optionally, the sixth through hole is communicated with a high-low pressure pipe of the air conditioner through a fifth connecting pipe, and a fifth control valve is arranged on the fifth connecting pipe;
the sixth through hole is communicated with an air pipe of the air conditioner through a sixth connecting pipe, and a sixth control valve is arranged on the sixth connecting pipe.
Optionally, the second through port is communicated with a high-low pressure pipe of the air conditioner through a first connecting pipe, the fourth through port is communicated with the high-low pressure pipe of the air conditioner through a third connecting pipe, and the sixth through port is communicated with the high-low pressure pipe of the air conditioner through a fifth connecting pipe;
the air conditioner also comprises a second four-way valve, and the high-low pressure pipe is respectively communicated with the first connecting pipe, the third connecting pipe and the fifth connecting pipe through the second four-way valve.
Optionally, the second through port is communicated with an air pipe of the air conditioner through a second connecting pipe, the fourth through port is communicated with the air pipe through a fourth connecting pipe, and the sixth through port is communicated with the air pipe through a sixth connecting pipe;
the air conditioner also comprises a third four-way valve, and the air pipe is respectively communicated with the second connecting pipe, the fourth connecting pipe and the sixth connecting pipe through the third four-way valve.
Alternatively, a plurality of indoor heat exchangers are arranged to form a closed polygon.
Optionally, the indoor unit of the air conditioner further comprises a fourth indoor heat exchanger, and the fourth indoor heat exchanger is connected with the second indoor heat exchanger in parallel;
the first indoor heat exchanger to the fourth indoor heat exchanger are spliced to form a quadrangle.
Optionally, the casing of the indoor unit of the air conditioner is provided with an air inlet, an air outlet, and an air duct communicating the air inlet and the air outlet;
a plurality of indoor heat exchangers are arranged in the air duct, and the indoor heat exchangers and the extending direction of the air duct form an included angle.
The utility model also provides an air conditioner, include:
an air-conditioning indoor unit;
the outdoor unit of the air conditioner comprises a compression mechanism and an outdoor heat exchanger;
a discharge pipe connected to a discharge side of the compression mechanism, a suction pipe connected to a suction side of the compression mechanism, and a liquid pipe sequentially connecting the discharge pipe, the outdoor heat exchanger, and one or more indoor heat exchangers of the indoor unit of the air conditioner;
an air pipe connecting the one or more indoor heat exchangers and the suction pipe; and the number of the first and second groups,
the air conditioner also comprises a high-low pressure pipe and a branch pipe which is branched from the discharge pipe, wherein the high-low pressure pipe sequentially connects a first intersection point of the liquid pipe, one or more indoor heat exchangers and the branch pipe, and the first intersection point is positioned between the indoor heat exchanger and the outdoor heat exchanger;
wherein, the air-conditioning indoor unit comprises at least three indoor heat exchangers which are respectively a first indoor heat exchanger, a second indoor heat exchanger and a third indoor heat exchanger,
the first indoor heat exchanger is provided with a first through hole and a second through hole for allowing refrigerant to enter or flow out of the first indoor heat exchanger, the first through hole is configured to be communicated with a liquid pipe of the air conditioner, and the second through hole is configured to be communicated with a high-low pressure pipe of the air conditioner and/or configured to be communicated with an air pipe of the air conditioner;
the second indoor heat exchanger is provided with a third through hole and a fourth through hole for allowing refrigerant to enter or flow out of the second indoor heat exchanger, the third through hole is configured to be communicated with a liquid pipe of the air conditioner, and the fourth through hole is configured to be communicated with a high-low pressure pipe of the air conditioner and/or configured to be communicated with an air pipe of the air conditioner; the third through hole is communicated with a liquid pipe of the air conditioner through a second refrigerant pipe, and a second indoor throttling device is arranged on the second refrigerant pipe;
the third indoor heat exchanger is provided with a fifth through hole and a sixth through hole for allowing refrigerant to enter or flow out of the third indoor heat exchanger, the fifth through hole is configured to be communicated with a liquid pipe of the air conditioner, and the sixth through hole is configured to be communicated with a high-low pressure pipe of the air conditioner and/or configured to be communicated with an air pipe of the air conditioner; the fifth through hole is communicated with a liquid pipe of the air conditioner through a third refrigerant pipe, and a third indoor throttling device is arranged on the third refrigerant pipe.
Optionally, the air conditioner further comprises a first switch switchable between a first switch first switching state and a first switch second switching state,
in the first switching state, the first switch communicates the liquid tube with the suction tube and communicates the air tube with the discharge tube;
in the second switching state, the first switch communicates the liquid pipe with the discharge pipe and communicates the air pipe with the suction pipe; and/or the presence of a gas in the gas,
the air conditioner further comprises a second switcher, wherein the second switcher can be switched between a third switching state and a fourth switching state of the second switcher, and in the third switching state, the second switcher enables the high-low pressure pipes to be communicated with the branch pipes; in the fourth switching state, the second switch communicates the high-low pressure pipe with the suction pipe.
In the technical scheme of the utility model, the first indoor heat exchanger can work firstly, and when the heat exchange area of the heat exchanger needs to be increased, the second indoor heat exchanger and the third indoor heat exchanger can be selected to be connected; in addition, the working states of the first heat exchanger, the second heat exchanger and the third heat exchanger can be different, and the heat exchanger can be used for completely heating, completely refrigerating and partially heating and refrigerating; so, machine in the air conditioning can realize refrigeration, heating and dehumidification reheat, and area adjustment through indoor heat exchanger can make the effect of indoor heat exchanger's refrigeration, heating and reheat dehumidification obtain more meticulous adjustment for the air conditioner can be adapted to more occasions, is favorable to improving the adaptability of air conditioner.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic structural view of an embodiment of an indoor unit of an air conditioner according to the present invention;
fig. 2 is a schematic structural diagram of an embodiment of the air conditioner of the present invention.
The reference numbers illustrate:
the objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
The utility model mainly provides an air-conditioning indoor unit, mainly be applied to in the air conditioner to make air-conditioning indoor unit including a plurality of indoor heat exchangers side by side, indoor heat exchanger's heat transfer total area can be adjusted as required, in order to satisfy different operating mode demands.
The following will mainly describe a specific structure of the air conditioning indoor unit.
Referring to fig. 1 to 2, in an embodiment of the present invention, the indoor unit of an air conditioner includes at least three indoor heat exchangers, i.e., a first indoor heat exchanger 310, a second indoor heat exchanger 320, and a third indoor heat exchanger 330, wherein,
the first indoor heat exchanger 310 is provided with a first through hole 311 and a second through hole 312 for allowing refrigerant to enter or flow out of the first indoor heat exchanger 310, the first through hole 311 is communicated with a liquid pipe 610 of the air conditioner, and the second through hole 312 is communicated with a high-low pressure pipe 620 of the air conditioner and/or is communicated with a gas pipe 630 of the air conditioner;
the second indoor heat exchanger 320 is provided with a third through hole 321 and a fourth through hole 322 for the refrigerant to enter or flow out of the second indoor heat exchanger 320, the third through hole 321 is communicated with a liquid pipe 610 of the air conditioner, and the fourth through hole 322 is communicated with a high-low pressure pipe 620 of the air conditioner and/or is communicated with a gas pipe 630 of the air conditioner; the third opening 321 is communicated with a liquid pipe 610 of the air conditioner through a second refrigerant pipe 323, and a second indoor throttling device 324 is arranged on the second refrigerant pipe 323;
the third indoor heat exchanger 330 is provided with a fifth through hole 331 and a sixth through hole 332 for allowing the refrigerant to enter or flow out of the third indoor heat exchanger 330, the fifth through hole 331 is configured to be communicated with a liquid pipe 610 of the air conditioner, and the sixth through hole 332 is configured to be communicated with a high-low pressure pipe 620 of the air conditioner and/or is configured to be communicated with a gas pipe 630 of the air conditioner; the fifth port 331 is connected to a liquid pipe 610 of the air conditioner through a third refrigerant pipe 333, and the third refrigerant pipe 333 is provided with a third indoor throttling device 334.
Specifically, in this embodiment, the air conditioning indoor unit includes a plurality of indoor heat exchangers, and three are taken as an example for description. The first opening 311 of the first indoor heat exchanger 310 is communicated with a liquid pipe 610 of the air conditioner, and the second opening 312 is communicated with a high-low pressure pipe 620 or an air pipe 630. When the refrigerant enters the first indoor heat exchanger 310 from the first outlet 311 and flows out of the first indoor heat exchanger 310 from the second outlet 312, the first indoor heat exchanger 310 cools; when the refrigerant enters the first indoor heat exchanger 310 from the second inlet 312 and flows out of the first indoor heat exchanger 310 from the first inlet 311, the first indoor heat exchanger 310 heats. When the first indoor heat exchanger 310 performs cooling, the refrigerant starts from the compressor 710, passes through the outdoor heat exchanger 750, enters the first indoor heat exchanger 310 through the first through hole 311 under the guidance of the liquid pipe 610, flows out of the first indoor heat exchanger 310 through the second through hole 312, returns to the gas-liquid separator 720 or the suction pipe 712 through the gas pipe 630, and then flows back to the compressor 710. When the first indoor heat exchanger 310 heats, the refrigerant has two flowing modes, the first mode is that the refrigerant is discharged from the compressor 710, enters the air pipe 630 through the discharge pipe 711, enters the first indoor heat exchanger 310 through the second opening 312, flows out of the first indoor heat exchanger 310 from the first opening 311, flows into the outdoor heat exchanger 750 through the liquid pipe 610, flows into the suction pipe 712 through the liquid pipe 610 after passing through the outdoor heat exchanger 750, and flows back to the compressor 710. The second type is that the refrigerant flows out from the compressor 710, flows into the high-low pressure pipe through the discharge pipe 711, enters the first indoor heat exchanger 310 through the second opening 312, flows out of the first indoor heat exchanger 310 through the first opening 311, flows into the outdoor heat exchanger 750 through the liquid pipe 610, flows into the suction pipe 712 through the liquid pipe 610 after passing through the outdoor heat exchanger 750, and flows back to the compressor 710.
Similarly, the third opening 321 of the second indoor heat exchanger 320 is communicated with the liquid pipe 610 of the air conditioner, and the fourth opening 322 is communicated with the high-low pressure pipe 620 or the air pipe 630. When the refrigerant enters the second indoor heat exchanger 320 from the third outlet 321 and flows out of the second indoor heat exchanger 320 from the fourth outlet 322, the second indoor heat exchanger 320 performs cooling; when the refrigerant enters the second indoor heat exchanger 320 through the fourth port 322 and flows out of the second indoor heat exchanger 320 through the third port 321, the second indoor heat exchanger 320 heats. When the second indoor heat exchanger 320 performs cooling, the refrigerant starts from the compressor 710, passes through the outdoor heat exchanger 750, enters the second indoor heat exchanger 320 through the third opening 321, flows out of the second indoor heat exchanger 320 through the fourth opening 322, returns to the gas-liquid separator 720 or the suction pipe 712 through the gas pipe 630, and then returns to the compressor 710 under the guidance of the liquid pipe 610. When the second indoor heat exchanger 320 heats, the refrigerant has two flowing modes, the first mode is that the refrigerant is discharged from the compressor 710, enters the air pipe 630 through the discharge pipe 711, enters the second indoor heat exchanger 320 through the fourth opening 322, flows out of the second indoor heat exchanger 320 through the third opening 321, flows into the outdoor heat exchanger 750 through the liquid pipe 610, flows into the suction pipe 712 through the liquid pipe 610 after passing through the outdoor heat exchanger 750, and flows back to the compressor 710. The second type is that the refrigerant flows out of the compressor 710, flows into the high-low pressure pipe through the discharge pipe 711, enters the second indoor heat exchanger 320 through the fourth port 322, flows out of the second indoor heat exchanger 320 through the third port 321, flows into the outdoor heat exchanger 750 through the liquid pipe 610, flows into the suction pipe 712 through the liquid pipe 610 after passing through the outdoor heat exchanger 750, and flows back to the compressor 710. The opening and closing of the second indoor throttle device 324 controls whether the second indoor heat exchanger 320 is engaged.
Similarly, the fifth port 331 of the third indoor heat exchanger 330 communicates with the liquid pipe 610 of the air conditioner, and the sixth port 332 communicates with the high-low pressure pipe 620 or the air pipe 630. When the refrigerant enters the third indoor heat exchanger 330 from the fifth port 331 and flows out of the third indoor heat exchanger 330 from the sixth port 332, the third indoor heat exchanger 330 performs refrigeration; when the refrigerant enters the third indoor heat exchanger 330 from the sixth port 332 and flows out of the third indoor heat exchanger 330 from the fifth port 331, the third indoor heat exchanger 330 generates heat. When the third indoor heat exchanger 330 performs refrigeration, the refrigerant starts from the compressor 710, passes through the outdoor heat exchanger 750, enters the third indoor heat exchanger 330 through the fifth port 331 under the guidance of the liquid pipe 610, flows out of the third indoor heat exchanger 330 through the sixth port 332, returns to the gas-liquid separator 720 or the suction pipe 712 through the gas pipe 630, and then flows back to the compressor 710. When the third indoor heat exchanger 330 heats, the refrigerant has two flowing modes, the first mode is that the refrigerant is discharged from the compressor 710, enters the air pipe 630 through the discharge pipe 711, enters the third indoor heat exchanger 330 through the sixth through hole 332, flows out of the third indoor heat exchanger 330 from the fifth through hole 331, flows into the outdoor heat exchanger 750 through the liquid pipe 610, flows into the suction pipe 712 through the liquid pipe 610 after passing through the outdoor heat exchanger 750, and flows back to the compressor 710. The second type is that the refrigerant flows out of the compressor 710, flows into the high-low pressure pipe through the discharge pipe 711, enters the third indoor heat exchanger 330 through the sixth port 332, flows out of the third indoor heat exchanger 330 through the fifth port 331, flows into the outdoor heat exchanger 750 through the liquid pipe 610, flows into the suction pipe 712 through the liquid pipe 610 after passing through the outdoor heat exchanger 750, and flows back to the compressor 710. The opening and closing of the third indoor throttle device 334 controls whether the third indoor heat exchanger 330 participates in the work.
In this way, the first indoor heat exchanger 310 may work first, and when the heat exchange area of the heat exchanger needs to be increased, the second indoor heat exchanger 320 and the third indoor heat exchanger 330 may be selected to be connected; in addition, the working states of the first heat exchanger, the second heat exchanger 320 and the third heat exchanger can be different, and all heating, all cooling and part of heating and part of cooling can be realized; so, machine in the air conditioning can realize refrigeration, heating and dehumidification reheat, and area adjustment through indoor heat exchanger can make the effect of indoor heat exchanger's refrigeration, heating and reheat dehumidification obtain more meticulous adjustment for the air conditioner can be adapted to more occasions, is favorable to improving the adaptability of air conditioner.
In some embodiments, in order to further improve the adaptability of the air conditioner, the first through hole 311 is communicated with a liquid pipe 610 of the air conditioner through a first refrigerant pipe 313, and the first indoor throttling device 314 is disposed on the first refrigerant pipe 313. The first indoor throttling device 314 is disposed on the first refrigerant pipe 313, so that the first indoor heat exchanger 310 may be in a non-operating state, and a position of an operating indoor heat exchanger among the plurality of indoor heat exchangers may be arbitrarily selected according to a requirement.
The opening and closing of the first refrigerant pipe 313, the second refrigerant pipe 323, and the third refrigerant pipe 333 may be controlled by a dedicated control valve in addition to the first throttle device, the second indoor throttle device 324, and the third indoor throttle device 334 for adjusting the flow rate. The air conditioner further includes a first four-way valve through which the liquid pipe 610 is respectively communicated with the first refrigerant pipe 313, the second refrigerant pipe 323, and the third refrigerant pipe 333. In some embodiments, in order to improve the convenience of installing the liquid pipe 610 and the first refrigerant pipe 313, the second refrigerant pipe 323, and the third refrigerant pipe 333 and to improve the compactness, a four-way valve is used to communicate the liquid pipe 610 with the three pipes. At this time, the four-way valve may not have a control function, and only the liquid pipes 610 need to be communicated with the three refrigerant pipes respectively. In other embodiments, in order to further improve the on/off control between the liquid pipe 610 and the first refrigerant pipe 313, the second refrigerant pipe 323, and the third refrigerant pipe 333, the first four-way valve may have a function of opening and closing the pipe orifice. For example, three nozzles communicating with the first refrigerant pipe 313, the second refrigerant pipe 323, and the third refrigerant pipe 333 may be opened and closed, respectively.
When the second port 312 is connected to the high-low pressure pipe 620 and the air pipe 630 at the same time, the fourth port 322 is connected to the high-low pressure pipe 620 and the air pipe 630 at the same time, and the sixth port 332 is connected to the high-low pressure pipe 620 and the air pipe 630 at the same time, there are various ways of controlling the first connection pipe 315, the second connection pipe 317, the third connection pipe 325, the fourth connection pipe 327, the fifth connection pipe 335, and the sixth connection pipe 337, respectively. Control valves may be respectively disposed on the first connection pipe 315, the second connection pipe 317, the third connection pipe 325, the fourth connection pipe 327, the fifth connection pipe 335, and the sixth connection pipe 337, or a second four-way valve and a third four-way valve may be respectively disposed.
The second through port 312 is communicated with a high-low pressure pipe 620 of the air conditioner through a first connecting pipe 315, and a first control valve 316 is arranged on the first connecting pipe 315; the second through port 312 is connected to an air pipe 630 of the air conditioner via a second connection pipe 317, and a second control valve 318 is provided on the second connection pipe 317. In this way, the second port 312 is selectively communicated with the high-pressure pipe 620 or the low-pressure pipe 630, so that the working state of the first indoor heat exchanger 310 can be arbitrarily adjusted according to the requirement, and is not affected by the working modes of other indoor heat exchangers. For example, when the overall indoor unit needs to realize the reheating and dehumidifying function, some indoor heat exchangers are needed to heat and some indoor heat exchangers are needed to cool. The second indoor heat exchanger 320 cools air, and the first indoor heat exchanger 310 heats air. As the second indoor heat exchanger 320 performs cooling, the refrigerant passes through the outdoor heat exchanger 750 through the liquid pipe 610, is delivered to the second indoor heat exchanger 320 through the liquid pipe 610 for cooling, and is then delivered back to the suction pipe 712 through the air pipe 630. At this time, the first indoor heat exchanger 310 needs to be heated, and the refrigerant flows from the discharge pipe 711, through the branch pipe 730, into the second port 312 through the high-low pressure pipe 620 and the first connection pipe 315, flows out of the first port 311, enters the liquid pipe 610, and flows into the suction pipe 712 through the liquid pipe 610. During this process, the first control valve 316 is opened and the second control valve 318 is closed. In this way, the first indoor heat exchanger 310 can realize a working state that cannot be realized by other heat exchangers, which is beneficial to improving the use occasion of the first indoor heat exchanger 310. When the first indoor heat exchanger 310 cools, the first control valve 316 is closed and the second control valve 318 is opened.
Similarly, the fourth through hole 322 is communicated with a high-low pressure pipe 620 of the air conditioner through a third connecting pipe 325, and the third connecting pipe 325 is provided with a third control valve 326; the fourth through hole 322 is connected to an air pipe 630 of the air conditioner through a fourth connection pipe 327, and a fourth control valve 328 is provided on the fourth connection pipe 327. In this way, the fourth port 322 is selectively communicated with the high-pressure pipe 620 or the low-pressure pipe 630, so that the working state of the second indoor heat exchanger 320 can be arbitrarily adjusted according to the requirement, and is not affected by the working modes of other indoor heat exchangers. When the second indoor heat exchanger 320 cools, the third control valve 326 is opened and/or the fourth control valve 328 is opened; when the second indoor heat exchanger 320 heats, the third control valve 326 is opened and the fourth control valve 328 is closed, or the third control valve 326 is closed and the fourth control valve 328 is opened.
Similarly, the sixth through hole 332 is communicated with a high-low pressure pipe 620 of the air conditioner through a fifth connecting pipe 335, and the fifth connecting pipe 335 is provided with a fifth control valve 336; the sixth through hole 332 is communicated with an air pipe 630 of the air conditioner through a sixth connection pipe 337, and the sixth connection pipe 337 is provided with a sixth control valve 338. In this way, the fourth port 322 is selectively communicated with the high-pressure pipe 620 or the low-pressure pipe 630, so that the working state of the second indoor heat exchanger 320 can be arbitrarily adjusted according to the requirement, and is not affected by the working modes of other indoor heat exchangers. When the third indoor heat exchanger 330 is cooling, the fifth control valve 336 is opened and/or the sixth control valve 338 is opened; when the third indoor heat exchanger 330 is heating, the fifth control valve 336 is opened and the sixth control valve 338 is closed, or the fifth control valve 336 is closed and the sixth control valve 338 is opened.
The second through port 312 is communicated with a high-low pressure pipe 620 of the air conditioner through a first connecting pipe 315, the fourth through port 322 is communicated with the high-low pressure pipe 620 of the air conditioner through a third connecting pipe 325, and the sixth through port 332 is communicated with the high-low pressure pipe 620 of the air conditioner through a fifth connecting pipe 335; the air conditioner further includes a second four-way valve through which the high-low pressure pipe 620 is respectively communicated with the first connection pipe 315, the third connection pipe 325, and the fifth connection pipe 335.
Specifically, in this embodiment, the high-low pressure pipe 620 communicates with the first connection pipe 315, the third connection pipe and the fifth connection pipe 335 through a second four-way valve, and the ports of the second four-way valve, which are respectively connected with the three connection pipes, can be controlled to open and close. In this manner, the first connection pipe 315, the third connection pipe 325, and the fifth connection pipe 335 can be turned on or off by the second four-way valve. The connection of the high-pressure pipe 620 and the first connection pipe 315, the third connection pipe 325 and the fifth connection pipe 335 is facilitated, and the on-off control of the three connection pipes can be realized conveniently.
The second through port 312 is communicated with an air pipe 630 of the air conditioner through a second connecting pipe 317, the fourth through port 322 is communicated with the air pipe 630 through a fourth connecting pipe 327, and the sixth through port 332 is communicated with the air pipe 630 through a sixth connecting pipe 337; the air conditioner further includes a third four-way valve through which the air pipe 630 is respectively communicated with the second connection pipe 317, the fourth connection pipe 327, and the sixth connection pipe 337.
Specifically, in this embodiment, the air pipe 630 is connected to the first connection pipe 315, the third connection pipe and the fifth connection pipe 335 through a third four-way valve, and the ports of the second four-way valve, which are respectively connected to the three connection pipes, can be controlled to open and close. In this way, the on/off of second connection pipe 317, fourth connection pipe 327, and sixth connection pipe 337 may be controlled by the third four-way valve. While being convenient for connecting air pipe 630 with second connecting pipe 317, fourth connecting pipe 327 and sixth connecting pipe 337, the on-off control of the three connecting pipes can be conveniently realized.
In some embodiments, in order to improve the heat exchange effect of the heat exchanger, a plurality of indoor heat exchangers are arranged to form a closed polygon. For example, the first indoor heat exchanger 310, the second indoor heat exchanger 320, and the third indoor heat exchanger 330 are arranged in a triangle shape. By such arrangement, not only the compactness of the structure can be improved, but also the installation stability of each heat exchanger can be improved.
When the number of the indoor heat exchangers is four, the indoor unit of the air conditioner further comprises a fourth indoor heat exchanger 340, and the fourth indoor heat exchanger 340 is connected with the second indoor heat exchanger 320 in parallel; the first to fourth indoor heat exchangers 310 to 340 are spliced to form a quadrangle. One refrigerant passage (seventh passage 341) of the fourth heat exchanger may be communicated with the liquid pipe 610 through a fourth refrigerant pipe 343. The other refrigerant passage (eighth passage 342) may be connected to the gas pipe 630 or the high and low pressure pipe 620, the eighth passage 342 may be connected to the high and low pressure pipe 620 through a seventh connection pipe 345, the eighth passage 342 may be connected to the gas pipe 630 through an eighth connection pipe 347, the seventh passage 341 may be connected to the liquid pipe 610 through a fourth refrigerant pipe 343, and a fourth indoor expansion device 344 may be provided in the fourth refrigerant pipe 343. In this way, the fourth heat exchanger can perform heating or cooling as in the first to third heat exchangers. Meanwhile, a seventh control valve 346 may be provided in the seventh connection pipe 345, and an eighth control valve 348 may be provided in the eighth connection pipe 347. The four indoor heat exchangers are arranged in a diamond shape, and in order to improve the heat exchange efficiency of the indoor heat exchangers, a shell 100 of the indoor unit of the air conditioner is provided with an air inlet, an air outlet and an air duct communicated with the air inlet and the air outlet; a plurality of indoor heat exchangers are arranged in the air duct, and the indoor heat exchangers and the extending direction of the air duct form an included angle. Therefore, when the airflow passes through the air duct, the airflow can pass through the four heat exchangers, so that the heat exchange effect of the four heat exchangers is better. The expansion devices according to the present application, for example, the first indoor expansion device 314, the second indoor expansion device 324, the third indoor expansion device 334, the fourth indoor expansion device 344, the outdoor expansion device 770, and the like may have an expansion structure such as an electronic expansion valve. It is worth to say that fan 200 is also arranged in the air duct, and an air outlet of fan 200 is arranged towards the indoor heat exchanger.
It should be noted that, regarding the connection manner of the liquid pipe 610 and the first refrigerant pipe 313, the second refrigerant pipe 323, the third refrigerant pipe 333 and the fourth refrigerant pipe 343, the first refrigerant pipe 313, the second refrigerant pipe 323, the third refrigerant pipe 333 and the fourth refrigerant pipe 343 may be respectively and independently communicated with the liquid pipe 610, or may be communicated with a plurality of liquid pipes 610. For example, after the first refrigerant pipe 313 is communicated with the second refrigerant pipe 323, the first communication pipe 510 is communicated with the liquid pipe 610; the third refrigerant pipe 333 is connected to the fourth refrigerant pipe 343, and then is connected to the liquid pipe 610 through the second connection pipe 520.
Similarly, regarding the connection manner between the high-pressure pipe 620 and the first connection pipe 315, the third connection pipe 325, the fifth connection pipe 335, and the seventh connection pipe 345, the first connection pipe 315, the third connection pipe 325, the fifth connection pipe 335, and the seventh connection pipe 345 may be respectively and independently communicated with the high-pressure pipe 620, or may be communicated with the high-pressure pipe 620 after being communicated with a plurality of pipes. For example, after the first connection pipe 315 is connected to the third connection pipe 325, the third connection pipe 530 is connected to the high-pressure pipe 620; after the fifth connection pipe 335 is connected to the seventh connection pipe 345, it is connected to the high-pressure pipe 620 through the fourth connection pipe 540.
Similarly, regarding the connection manner between air tube 630 and second connecting tube 317, fourth connecting tube 327, sixth connecting tube 337 and eighth connecting tube 347, second connecting tube 317, fourth connecting tube 327, sixth connecting tube 337 and eighth connecting tube 347 may be respectively and independently communicated with air tube 630, or a plurality of air tubes 630 may be communicated with each other. For example, after the second connecting pipe 317 is connected to the fourth connecting pipe 327, the fifth connecting pipe 550 is connected to the air pipe 630; after the sixth connection pipe 337 is connected to the eighth connection pipe 347, it is connected to the air pipe 630 through the sixth connection pipe 560.
The utility model discloses still provide an air conditioner, this air conditioner includes machine in air condensing units and the air conditioning, and the concrete structure of this machine in the air conditioning refers to above-mentioned embodiment, because this air conditioner has adopted the whole technical scheme of above-mentioned all embodiments, consequently has all beneficial effects that the technical scheme of above-mentioned embodiment brought at least, and the repeated description is no longer given here. The outdoor unit of the air conditioner comprises a compressor 710 and an outdoor heat exchanger 750; a discharge pipe 711 connected to a discharge side of the compressor 710, a suction pipe 712 connected to a suction side of the compressor 710, and a liquid pipe 610 sequentially connecting the discharge pipe 711, the outdoor heat exchanger 750, and one or more indoor heat exchangers of the indoor air conditioning unit; an air pipe 630 connecting one or more indoor heat exchangers with the suction pipe 712; and a high and low pressure pipe and a branch pipe 730 branched from the discharge pipe 711, the high and low pressure pipe 620 sequentially connecting a first intersection of the liquid pipe 610, one or more indoor heat exchangers, and the branch pipe 730, wherein the first intersection is located between the indoor heat exchanger and the outdoor heat exchanger 750.
In some embodiments, in order to improve the flexibility of the system, the air conditioner further includes a first switch 740, the first switch 740 being switchable between a first switching state of the first switch 740 and a second switching state of the first switch 740,
in the first switching state, the first switch 740 communicates the liquid tube with the suction tube 712 and communicates the air tube with the discharge tube 711;
in the second switching state, the first switch 740 communicates the liquid tube with the discharge tube 711 and communicates the air tube with the suction tube 712; and/or the presence of a gas in the gas,
the air conditioner further includes a second switch 760, the second switch 760 being switchable between a third switching state of the second switch 760 and a fourth switching state, in the third switching state, the second switch 760 communicating the high and low voltage pipes with the branch pipe 730; in the fourth switching state, the second switch 760 communicates the high-low pressure pipe with the suction pipe 712. Also connected to the second switch 760 is an auxiliary branch pipe 780, the auxiliary branch pipe 780 being communicated with the suction pipe 712 when the high and low pressure pipes are communicated with the branch pipe 730; when the high and low pressure pipes communicate with the suction pipe 712, the auxiliary branch pipe 780 communicates the suction pipe 712 and the branch pipe 730.
The above only be the preferred embodiment of the utility model discloses a not consequently restriction the utility model discloses a patent range, all are in the utility model discloses a conceive, utilize the equivalent structure transform of what the content was done in the description and the attached drawing, or direct/indirect application all is included in other relevant technical field the utility model discloses a patent protection within range.
Claims (18)
1. An indoor unit of an air conditioner is characterized by comprising at least three indoor heat exchangers, namely a first indoor heat exchanger, a second indoor heat exchanger and a third indoor heat exchanger,
the first indoor heat exchanger is provided with a first through hole and a second through hole for allowing refrigerant to enter or flow out of the first indoor heat exchanger, the first through hole is configured to be communicated with a liquid pipe of the air conditioner, and the second through hole is configured to be communicated with a high-low pressure pipe of the air conditioner and/or configured to be communicated with an air pipe of the air conditioner;
the second indoor heat exchanger is provided with a third through hole and a fourth through hole for allowing refrigerant to enter or flow out of the second indoor heat exchanger, the third through hole is configured to be communicated with a liquid pipe of the air conditioner, and the fourth through hole is configured to be communicated with a high-low pressure pipe of the air conditioner and/or configured to be communicated with an air pipe of the air conditioner; the third through hole is communicated with a liquid pipe of the air conditioner through a second refrigerant pipe, and a second indoor throttling device is arranged on the second refrigerant pipe;
the third indoor heat exchanger is provided with a fifth through hole and a sixth through hole for allowing refrigerant to enter or flow out of the third indoor heat exchanger, the fifth through hole is configured to be communicated with a liquid pipe of the air conditioner, and the sixth through hole is configured to be communicated with a high-low pressure pipe of the air conditioner and/or configured to be communicated with an air pipe of the air conditioner; the fifth through hole is communicated with a liquid pipe of the air conditioner through a third refrigerant pipe, and a third indoor throttling device is arranged on the third refrigerant pipe.
2. The indoor unit of claim 1, wherein the first outlet is connected to a liquid pipe of the air conditioner through a first refrigerant pipe, and the first refrigerant pipe is provided with a first indoor throttling means.
3. The indoor unit of claim 2, wherein the air conditioner further comprises a first four-way valve, and the liquid pipe is respectively connected to the first refrigerant pipe, the second refrigerant pipe and the third refrigerant pipe through the first four-way valve.
4. The indoor unit of an air conditioner according to claim 1, wherein the second port is communicated with a high-low pressure pipe of the air conditioner through a first connection pipe, and a first control valve is provided on the first connection pipe;
the second through port is communicated with an air pipe of the air conditioner through a second connecting pipe, and a second control valve is arranged on the second connecting pipe.
5. The indoor unit of claim 1, wherein the fourth port is connected to the high and low pressure pipes of the air conditioner through a third connection pipe, and a third control valve is provided on the third connection pipe;
the fourth through hole is communicated with an air pipe of the air conditioner through a fourth connecting pipe, and a fourth control valve is arranged on the fourth connecting pipe.
6. The indoor unit of an air conditioner according to claim 1, wherein the sixth port is communicated with the high and low pressure pipes of the air conditioner through a fifth connection pipe, and a fifth control valve is provided on the fifth connection pipe;
the sixth through hole is communicated with an air pipe of the air conditioner through a sixth connecting pipe, and a sixth control valve is arranged on the sixth connecting pipe.
7. The indoor unit of an air conditioner according to claim 1, wherein the second port is communicated with the high and low pressure pipes of the air conditioner through a first connection pipe, the fourth port is communicated with the high and low pressure pipes of the air conditioner through a third connection pipe, and the sixth port is communicated with the high and low pressure pipes of the air conditioner through a fifth connection pipe;
the air conditioner also comprises a second four-way valve, and the high-low pressure pipe is respectively communicated with the first connecting pipe, the third connecting pipe and the fifth connecting pipe through the second four-way valve.
8. The indoor unit of an air conditioner according to claim 1, wherein the second through port is communicated with an air pipe of the air conditioner through a second connection pipe, the fourth through port is communicated with the air pipe through a fourth connection pipe, and the sixth through port is communicated with the air pipe through a sixth connection pipe;
the air conditioner also comprises a third four-way valve, and the air pipe is respectively communicated with the second connecting pipe, the fourth connecting pipe and the sixth connecting pipe through the third four-way valve.
9. The indoor unit of an air conditioner according to claim 1, wherein the plurality of indoor heat exchangers are arranged to form a closed polygon.
10. The indoor unit of an air conditioner according to claim 1, further comprising a fourth indoor heat exchanger connected in parallel with the second indoor heat exchanger;
the first indoor heat exchanger to the fourth indoor heat exchanger are spliced to form a quadrangle.
11. The indoor unit of claim 10, wherein the fourth indoor heat exchanger has a seventh port and an eighth port through which the refrigerant enters or exits the fourth indoor heat exchanger;
the seventh through hole is communicated with the liquid pipe through a fourth refrigerant pipe, and a fourth indoor throttling device is arranged on the fourth refrigerant pipe;
the eighth port is configured to communicate with a high-low pressure pipe or an air pipe.
12. The indoor unit of an air conditioner according to claim 11, wherein the eighth port is communicated with the high-and low-pressure pipes through a seventh connection pipe, and a seventh control valve is provided on the seventh connection pipe; and/or the presence of a gas in the gas,
the eighth through hole is communicated with the air pipe through an eighth connecting pipe, and an eighth control valve is arranged on the eighth connecting pipe.
13. The indoor unit of an air conditioner according to claim 12, wherein the first refrigerant pipe and the second refrigerant pipe are communicated with each other and then communicated with the liquid pipe through a first communication pipe; and/or the presence of a gas in the gas,
the third refrigerant pipe is communicated with the fourth refrigerant pipe and then communicated with the liquid pipe through the second communicating pipe.
14. The indoor unit of an air conditioner according to claim 12, wherein the first connection pipe and the third connection pipe are connected to each other and then connected to the high-and low-pressure pipes through a third connection pipe; and/or the presence of a gas in the gas,
and the fifth connecting pipe is communicated with the seventh connecting pipe and then is communicated with the high-low pressure pipe through a fourth communicating pipe.
15. The indoor unit of an air conditioner according to claim 12, wherein the second connection pipe and the fourth connection pipe are connected to each other and then connected to the air pipe through a fifth connection pipe; and/or the presence of a gas in the gas,
the sixth connecting pipe is communicated with the eighth connecting pipe and then communicated with the air pipe through the sixth communicating pipe.
16. The indoor unit of an air conditioner according to any one of claims 1 to 15, wherein the casing of the indoor unit has an air inlet, an air outlet, and an air duct communicating the air inlet and the air outlet;
a plurality of indoor heat exchangers are arranged in the air duct, and the indoor heat exchangers and the extending direction of the air duct form an included angle.
17. An air conditioner, comprising:
the indoor unit of an air conditioner according to any one of claims 1 to 16;
the outdoor unit of the air conditioner comprises a compression mechanism and an outdoor heat exchanger;
a discharge pipe connected to a discharge side of the compression mechanism, a suction pipe connected to a suction side of the compression mechanism, and a liquid pipe sequentially connecting the discharge pipe, the outdoor heat exchanger, and one or more indoor heat exchangers of the indoor unit of the air conditioner;
an air pipe connecting the one or more indoor heat exchangers and the suction pipe; and the number of the first and second groups,
the air conditioner further comprises a high-low pressure pipe and a branch pipe which is branched from the discharge pipe, the high-low pressure pipe is used for sequentially connecting a first cross point of the liquid pipe, one or more indoor heat exchangers and the branch pipe, and the first cross point is located between the indoor heat exchanger and the outdoor heat exchanger.
18. The air conditioner as claimed in claim 17, further comprising a first switch switchable between a first switch first switching state and a first switch second switching state;
in the first switching state, the first switch communicates the liquid tube with the suction tube and communicates the air tube with the discharge tube;
in the second switching state, the first switch communicates the liquid pipe with the discharge pipe and communicates the air pipe with the suction pipe; and/or the presence of a gas in the gas,
the air conditioner further comprises a second switcher, wherein the second switcher can be switched between a third switching state and a fourth switching state of the second switcher, and in the third switching state, the second switcher enables the high-low pressure pipes to be communicated with the branch pipes; in the fourth switching state, the second switch communicates the high-low pressure pipe with the suction pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921827307.3U CN210832267U (en) | 2019-10-28 | 2019-10-28 | Air conditioner indoor unit and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921827307.3U CN210832267U (en) | 2019-10-28 | 2019-10-28 | Air conditioner indoor unit and air conditioner |
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| CN210832267U true CN210832267U (en) | 2020-06-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114151940A (en) * | 2020-09-08 | 2022-03-08 | 广东美的制冷设备有限公司 | Air conditioner, control method and device thereof and readable storage medium |
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2019
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114151940A (en) * | 2020-09-08 | 2022-03-08 | 广东美的制冷设备有限公司 | Air conditioner, control method and device thereof and readable storage medium |
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