CN217178731U - Air conditioner indoor unit and air conditioning system - Google Patents
Air conditioner indoor unit and air conditioning system Download PDFInfo
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- CN217178731U CN217178731U CN202220220084.XU CN202220220084U CN217178731U CN 217178731 U CN217178731 U CN 217178731U CN 202220220084 U CN202220220084 U CN 202220220084U CN 217178731 U CN217178731 U CN 217178731U
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Abstract
The utility model discloses an air conditioning indoor unit and air conditioning system belongs to the air conditioning field. The air-conditioning indoor unit comprises a shell and at least two indoor heat exchange assemblies; the housing has a first interface and a second interface; each indoor heat exchange assembly is located in the shell and connected with the first interface and the second interface, and can be connected with or disconnected from the first interface and the second interface. The present disclosure can improve the defrosting effect.
Description
Technical Field
The disclosure belongs to the field of air conditioners, and particularly relates to an air conditioner indoor unit and an air conditioning system.
Background
An air conditioning system is an appliance for regulating the indoor air temperature.
In the related art, an air conditioning system mainly includes an indoor air conditioning unit and an outdoor air conditioning unit, where the indoor air conditioning unit is located indoors and the outdoor air conditioning unit is located outdoors. In winter, the outdoor heat exchanger of the outdoor unit of the air conditioner often frosts due to too low outdoor temperature, and the normal operation of the air conditioning system is seriously influenced. To solve this problem, the air conditioning system has a defrosting function. In the defrosting process, high-temperature refrigerant directly enters the outdoor heat exchanger after exchanging heat through the indoor heat exchanger of the indoor unit of the air conditioner, so that the defrosting effect is achieved.
However, since the high-temperature refrigerant has already undergone heat exchange once in the indoor heat exchanger before entering the outdoor heat exchanger, the temperature of the refrigerant entering the outdoor heat exchanger is not high, resulting in poor defrosting effect.
SUMMERY OF THE UTILITY MODEL
In order to overcome the problems in the related art to a certain extent, the embodiment of the disclosure provides an air conditioner indoor unit and an air conditioning system, and the technical scheme is as follows:
in order to achieve the purpose, the technical scheme adopted by the disclosure is as follows:
according to one aspect of the disclosure, an indoor unit of an air conditioner is provided, which includes a casing and at least two indoor heat exchange assemblies;
the housing has a first interface and a second interface;
each indoor heat exchange assembly is located in the shell and connected with the first interface and the second interface, and each indoor heat exchange assembly can be connected with or disconnected from the first interface and the second interface.
In one implementation of the present disclosure, the indoor heat exchange assembly includes an indoor heat exchanger and a switching valve;
the first port of the indoor heat exchanger is connected with the first interface, the second port of the indoor heat exchanger is connected with the second interface, and the switch valve is arranged at least one of the first port of the indoor heat exchanger and the second port of the indoor heat exchanger.
In one implementation of the present disclosure, the indoor heat exchange assembly includes two of the switching valves;
one of the two switching valves is connected between a first port of the indoor heat exchanger and the first port, and the other of the two switching valves is connected between a second port of the indoor heat exchanger and the second port.
In one implementation manner of the present disclosure, when the indoor unit of the air conditioner is in a normal working state, the on-off valves of all the indoor heat exchange assemblies are in an open state;
when the indoor unit of the air conditioner is in a defrosting state, one part of the two switch valves of the indoor heat exchange assembly are in a conducting state, and the other part of the two switch valves of the indoor heat exchange assembly are in a closing state.
In one implementation manner of the present disclosure, the indoor unit of the air conditioner includes two indoor heat exchange assemblies;
and the two indoor heat exchange assemblies are connected in parallel.
In one implementation manner of the present disclosure, the indoor unit of an air conditioner further includes an electric auxiliary heating assembly;
the electric auxiliary heating assembly is connected with the inner wall of the shell, and the electric auxiliary heating assembly is spaced from the indoor heat exchange assemblies.
In one implementation of the present disclosure, when the temperature of the indoor heat exchange assembly is lower than a temperature threshold, the electric auxiliary heating assembly is in an on state.
In one implementation manner of the present disclosure, in a direction perpendicular to the electric auxiliary heating assembly, the shortest distance between the electric auxiliary heating assembly and each of the indoor heat exchange assemblies is 12-20mm, respectively.
According to another aspect of the present disclosure, an air conditioning system is provided, which includes an outdoor unit of an air conditioner and the indoor unit of the air conditioner described above;
the air conditioner outdoor unit comprises a compressor, a four-way valve, an outdoor heat exchanger, a throttle valve and a liquid storage tank;
the outlet of the compressor is connected with the four-way valve, the four-way valve is connected with the first port of the outdoor heat exchanger, the second port of the outdoor heat exchanger is connected with the first port of the throttling valve, the second port of the throttling valve is connected with the first port, the second port is connected with the four-way valve, the four-way valve is connected with the inlet of the liquid storage tank, and the outlet of the liquid storage tank is connected with the inlet of the compressor.
In one implementation manner of the present disclosure, a first port of the four-way valve is connected to an outlet of the compressor, a second port of the four-way valve is connected to a first port of the outdoor heat exchanger, a third port of the four-way valve is connected to the second port, and a fourth port of the four-way valve is connected to an inlet of the liquid storage tank.
The technical scheme provided by the embodiment of the disclosure has the following beneficial effects:
when the air-conditioning indoor unit is applied to an air-conditioning system, the first interface and the second interface of the shell are respectively connected with an air-conditioning outdoor unit of the air-conditioning system, so that the circulation of a refrigerant between the air-conditioning indoor unit and the air-conditioning outdoor unit is realized. When the air conditioning system normally works, each indoor heat exchange assembly is in a conducting state, so that the refrigerant can normally perform heat exchange in each indoor heat exchange assembly in a circulating manner through the first interface and the second interface. When the air conditioning system is defrosted, one part of indoor heat exchange assemblies are in a conducting state, and the other part of indoor heat exchange assemblies are in a switching-off state. The refrigerant can normally circulate and exchange heat in the indoor heat exchange assembly in the on state through the first interface and the second interface, and the indoor heat exchange assembly in the off state stops circulating and exchanging heat. Therefore, the heat exchange capacity of the air conditioner indoor unit is reduced, high-temperature refrigerants can enter the air conditioner outdoor unit at a high temperature after passing through the air conditioner indoor unit, and the defrosting effect is improved.
That is to say, this air conditioning indoor set that openly provides can be through the quantity of the indoor heat exchange assembly of control switch on and turn off, adjusts the heat transfer ability of air conditioning indoor set to adjust the refrigerant temperature by the output of air conditioning indoor set, and then guarantee the defrosting effect.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is apparent that the drawings in the description below are only some embodiments of the present disclosure, and it is obvious for those skilled in the art that other drawings may be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an air conditioner indoor unit provided in an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of an indoor unit of an air conditioner provided in the embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of an air conditioning system provided in an embodiment of the present disclosure.
The symbols in the drawings represent the following meanings:
1. a housing;
11. a first interface; 12. a second interface;
2. an indoor heat exchange assembly;
21. an indoor heat exchanger; 22. an on-off valve;
3. an electrically assisted thermal assembly;
4. a fan;
100. an air conditioner outdoor unit;
110. a compressor; 120. a four-way valve; 130. an outdoor heat exchanger; 140. a throttle valve; 150. a liquid storage tank;
200. provided is an air-conditioning indoor unit.
Detailed Description
To make the objects, technical solutions and advantages of the present disclosure more apparent, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.
An air conditioning system is an appliance for regulating the indoor air temperature.
In the related art, an air conditioning system mainly includes an indoor air conditioning unit and an outdoor air conditioning unit, where the indoor air conditioning unit is located indoors and the outdoor air conditioning unit is located outdoors. In winter, the outdoor heat exchanger of the outdoor unit of the air conditioner often frosts due to too low outdoor temperature, and the normal operation of the air conditioning system is seriously influenced. To solve this problem, the air conditioning system has a defrosting function. In the defrosting process, high-temperature refrigerant directly enters the outdoor heat exchanger after exchanging heat through the indoor heat exchanger of the indoor unit of the air conditioner, so that the defrosting effect is achieved.
However, since the high-temperature refrigerant has already undergone heat exchange once in the indoor heat exchanger before entering the outdoor heat exchanger, the temperature of the refrigerant entering the outdoor heat exchanger is not high, resulting in poor defrosting effect.
In order to solve the technical problem, an embodiment of the present disclosure provides an air conditioning indoor unit, which is suitable for an air conditioning system. Fig. 1 is a schematic structural view of the indoor unit of an air conditioner, and referring to fig. 1, in this embodiment, the indoor unit includes a casing 1 and at least two indoor heat exchange assemblies 2.
The shell 1 is provided with a first interface 11 and a second interface 12, each indoor heat exchange assembly 2 is located in the shell 1 and connected with the first interface 11 and the second interface 12, and each indoor heat exchange assembly 2 can be connected with the first interface 11 and the second interface 12 or disconnected.
When the indoor unit of an air conditioner is applied to an air conditioning system, the first port 11 and the second port 12 of the casing 1 are respectively connected to an outdoor unit 100 of the air conditioning system, so that a refrigerant is circulated between the indoor unit of the air conditioner and the outdoor unit 100. When the air conditioning system normally works, each indoor heat exchange assembly 2 is in a conducting state, so that the refrigerant can normally perform circulating heat exchange in each indoor heat exchange assembly 2 through the first interface 11 and the second interface 12. When the air conditioning system is defrosted, one part of the indoor heat exchange assemblies 2 are in a conducting state, and the other part of the indoor heat exchange assemblies 2 are in a switching-off state. The refrigerant can normally circulate and exchange heat in the indoor heat exchange assembly 2 in the on state through the first interface 11 and the second interface 12, and the indoor heat exchange assembly 2 in the off state stops circulating and exchanging heat. Therefore, the heat exchange capacity of the air-conditioning indoor unit is reduced, so that the high-temperature refrigerant can enter the air-conditioning outdoor unit 100 at a high temperature after passing through the air-conditioning indoor unit, and the defrosting effect is improved.
That is to say, the air conditioning indoor unit provided by the present disclosure can adjust the heat exchange capacity of the air conditioning indoor unit by controlling the number of on and off of the indoor heat exchange assemblies 2, so as to adjust the temperature of the refrigerant output by the air conditioning indoor unit, thereby ensuring the defrosting effect.
In the above related art, the defrosting mode of the air conditioning system is non-reversing defrosting, that is, defrosting can be realized without changing the flow direction of the refrigerant in the heating state of the air conditioning system. In other related technologies, another defrosting mode of the air conditioning system is reverse defrosting, that is, the flow direction of the refrigerant needs to be changed in a heating state of the air conditioning system to achieve defrosting. When the air conditioning system performs defrosting by adopting a reversing defrosting mode, the refrigerant absorbs indoor heat to become a high-temperature refrigerant in the process of flowing through the indoor unit of the air conditioner, and the high-temperature refrigerant flows through the outdoor unit 100 of the air conditioner to achieve defrosting. In this way, the temperature of the air-conditioning indoor unit is reduced to below room temperature, and if the indoor needs to be heated again after defrosting is finished, the air-conditioning indoor unit needs to be heated for a long time.
The air conditioner indoor unit provided by the embodiment of the disclosure can solve the technical problem. When the air conditioning system normally works, each indoor heat exchange assembly 2 is in a conducting state, so that the refrigerant can normally perform circulating heat exchange in each indoor heat exchange assembly 2 through the first interface 11 and the second interface 12. When the air conditioning system is defrosted, one part of the indoor heat exchange assemblies 2 are in a conducting state, and the other part of the indoor heat exchange assemblies 2 are in a switching-off state. The refrigerant can normally circulate and exchange heat in the indoor heat exchange assembly 2 in the on state through the first interface 11 and the second interface 12, and the indoor heat exchange assembly 2 in the off state stops circulating and exchanging heat. In this way, the indoor heat exchange assembly 2 in the off state can maintain a high temperature, which is equivalent to a heat storage effect, so that the temperature of the indoor unit of the air conditioner can be quickly increased after the air conditioning system heats again.
As can be seen from the foregoing, the air conditioning indoor unit provided in the embodiment of the present disclosure can achieve the above technical effects, because the air conditioning indoor unit is configured with at least two indoor heat exchange assemblies 2. The indoor heat exchange module 2 will be described below.
With continued reference to fig. 1, in the present embodiment, the indoor heat exchange assembly 2 includes an indoor heat exchanger 21 and an on-off valve 22. A first port of the indoor heat exchanger 21 is connected to the first port 11, a second port of the indoor heat exchanger 21 is connected to the second port 12, and an on-off valve 22 is provided at least one of the first port of the indoor heat exchanger 21 and the second port of the indoor heat exchanger 21.
In the above implementation, the on-off valve 22 can control the on-off of the pipeline. When the on-off valve 22 is disposed at the first port of the indoor heat exchanger 21, the on-off valve 22 can control on/off between the first end of the indoor heat exchanger 21 and the first port 11, and when the on-off valve 22 is disposed at the second port of the indoor heat exchanger 21, the on-off valve 22 can control on/off between the second end of the indoor heat exchanger 21 and the second port 12. The switching valve 22 is arranged at the first port or the second port of the indoor heat exchanger 21, so that the indoor heat exchange assembly 2 can be switched on or off with the first port 11 and the second port 12.
Alternatively, the on-off valve 22 is a solenoid valve, so that the electrification control of the indoor unit of the air conditioner can be facilitated.
With continued reference to fig. 1, in the present embodiment, the indoor heat exchange assembly 2 includes two on-off valves 22. One of the two switching valves 22 is connected between the first port of the indoor heat exchanger 21 and the first connection port 11, and the other of the two switching valves 22 is connected between the second port of the indoor heat exchanger 21 and the second connection port 12.
The switching valves 22 are provided at the first port and the second port of the indoor heat exchanger 21, so that the two switching valves 22 are used to control the on/off of the first port and the second port of the indoor heat exchanger 21, respectively. In this way, even if one switch valve 22 fails to work normally, the other switch valve 22 can also switch on or off the indoor heat exchange assembly 2 with the first interface 11 and the second interface 12, thereby improving the reliability of the indoor heat exchange assembly 2. Further, since the interior of the indoor heat exchanger 21 has a large capacity, if an on-off valve is provided only at one port of the indoor heat exchanger 21, the refrigerant may enter from the other port of the indoor heat exchanger 21, thereby affecting the defrosting effect. And all set up ooff valve 22 at indoor heat exchanger 21's first port and second port department, just can effectively solve above-mentioned problem, guaranteed the defrosting effect.
The open/close state of the on-off valve 22 in different states of the indoor unit of the air conditioner will be briefly described below.
When the air conditioning indoor unit is in a normal working state, the on-off valves 22 of all the indoor heat exchange assemblies 2 are in an open state. When the indoor unit of the air conditioner is in a defrosting state, two switch valves 22 of one part of the indoor heat exchange assemblies 2 are in a conducting state, and two switch valves 22 of the other part of the indoor heat exchange assemblies 2 are in a closing state.
In the above implementation manner, all the on-off valves 22 are adjusted to be in the open state, so that the on-off valves 22 can be effectively prevented from affecting the normal operation of the indoor unit of the air conditioner, and the refrigerant can normally flow in the indoor heat exchange assembly 2. When in a defrosting state, the two switch valves 22 of one part of the indoor heat exchange assemblies 2 are selectively adjusted to be in a conducting state, the two switch valves 22 of the other part of the indoor heat exchange assemblies 2 are adjusted to be in a switching-off state, and the conducting and switching-off quantity of the indoor heat exchange assemblies 2 can be adjusted, so that the heat exchange capacity of the indoor air conditioner is adjusted, the temperature of a refrigerant output by the indoor air conditioner is adjusted, and the defrosting effect is ensured.
From the foregoing, the heat exchange capacity of the indoor unit of the air conditioner can be adjusted by controlling the number of on and off of the indoor heat exchange assemblies 2. It is easy to understand that the greater the number of indoor heat exchange assemblies 2, the more fine the adjustment, but the more complicated the structure of the corresponding air conditioning indoor unit and the higher the cost.
In this embodiment, the indoor unit of the air conditioner includes two indoor heat exchange assemblies 2, and the two indoor heat exchange assemblies 2 are connected in parallel.
Through the experiment, set up two indoor heat exchange assemblies 2, can satisfy the defrosting requirement. The heat exchange effect can be guaranteed in the non-reversing defrosting mode, and the temperature rise speed can be guaranteed in the reversing defrosting mode. And, set up indoor heat exchange assemblies 2's quantity into two, can effectual simplification air conditioning indoor set's structure, reduce cost.
Optionally, the two indoor heat exchange assemblies 2 are arranged in an axisymmetrical manner by using a connecting line between the first connector 11 and the second connector 12. Because the two indoor heat exchange assemblies 2 are arranged in an axisymmetrical manner by using a connecting line between the first connector 11 and the second connector 12, the refrigerant can uniformly enter the two indoor heat exchange assemblies 2, and the use effect of the indoor unit of the air conditioner is ensured. It should be noted that the two indoor heat exchange assemblies 2 have the same structure, the same size, and the same connecting pipeline.
Fig. 2 is a schematic structural view of an air conditioning indoor unit, and fig. 2 is different from fig. 1 in that the on-off valve 22 is omitted in fig. 2 and the electric auxiliary heating unit 3 is added. Referring to fig. 2, in this embodiment, the indoor unit of an air conditioner further includes an electric auxiliary heating unit 3, the electric auxiliary heating unit 3 is connected to the inner wall of the casing 1, and the electric auxiliary heating unit 3 is spaced from each indoor heat exchange unit 2.
In the process of heating the indoor unit of the air conditioner, if defrosting is needed, part of the indoor heat exchange assemblies 2 are closed, which will cause the heating effect of the indoor unit of the air conditioner to be affected to a certain extent. In this case, the electric auxiliary heating assembly 3 is started, and the electric auxiliary heating assembly 3 is powered on to generate heat, so that the heating of the indoor unit of the air conditioner is assisted, and the heating effect of the indoor unit of the air conditioner is improved. Of course, the electric auxiliary heating assembly 3 can be started to further improve the heating effect of the air-conditioning indoor unit under the condition of not defrosting.
Optionally, the electric auxiliary heating component 3 is an electric heating plate. After the electric auxiliary heating component 3 is started, the electric heating plate starts to work, and the electric heating alloy wires in the electric heating plate start to generate heat, so that the auxiliary heating effect is achieved.
Illustratively, the electric heating plate is a plate-shaped structure formed by bending electric heating tubes, and gaps are formed among the electric heating tubes so as to facilitate gas flow.
In the present embodiment, the air conditioning indoor unit has a fan 4, and an air inlet of the fan 4 faces the electric auxiliary heating unit 3, so that hot air can be blown out by the fan 4.
Optionally, in a direction perpendicular to the electric auxiliary heating assembly 3, the shortest distance between the electric auxiliary heating assembly 3 and each indoor heat exchange assembly 2 is 12-20mm, and the shortest distance between the electric auxiliary heating assembly 3 and the fan 4 is 12-20 mm.
In the above implementation manner, the shortest distance between the electric auxiliary heating assembly 3 and each indoor heat exchange assembly 2 and the shortest distance between the electric auxiliary heating assembly 3 and the fan 4 are designed respectively. By the design, the electric safety can be guaranteed, and meanwhile, effective heating assistance is provided.
In this embodiment, when the temperature of the indoor heat exchange assembly 2 is lower than the temperature threshold, the electric auxiliary heating assembly 3 is in an on state.
That is, by setting the temperature threshold, it is possible to perform on-off control of the electric auxiliary heating unit 3, thereby turning on the electric auxiliary heating unit 3 when necessary, and performing heating in real time, and turning off the electric auxiliary heating unit 3 when not necessary, to save energy.
The temperature threshold is an artificially set value, for example, an indoor temperature.
The operation of the electric auxiliary heating unit 3 and the fan 4 will be described below.
When the temperature of the indoor heat exchanger 21 is higher than the indoor temperature, the electric auxiliary heating assembly 3 is turned off, and the fan 4 runs at a high rotating speed, so that the heat exchange of the indoor heat exchange assembly 2 is accelerated. When the temperature of the indoor heat exchanger 21 is lower than the indoor temperature but higher, the electric auxiliary heating assembly 3 is started, and the fan 4 runs at a higher speed, so that the heat exchange of the indoor heat exchange assembly 2 is accelerated. When the temperature of the indoor heat exchanger 21 is lower than the indoor temperature and is lower than the indoor temperature, the electric auxiliary heating assembly 3 is turned on, and the fan 4 runs at a low speed, so that the temperature of the indoor heat exchanger 21 is favorably increased.
Fig. 3 is a schematic structural diagram of an air conditioning system according to an embodiment of the present disclosure, and referring to fig. 3, in this embodiment, the air conditioning system includes an outdoor unit 100 and an indoor unit shown in fig. 1 to 2.
The outdoor unit 100 of the air conditioner includes a compressor 110, a four-way valve 120, an outdoor heat exchanger 130, a throttle valve 140, and a receiver 150. An outlet of the compressor 110 is connected to the four-way valve 120, the four-way valve 120 is connected to a first port of the outdoor heat exchanger 130, a second port of the outdoor heat exchanger 130 is connected to a first port of the throttle valve 140, a second port of the throttle valve 140 is connected to the first port 11, the second port 12 is connected to the four-way valve 120, the four-way valve 120 is connected to an inlet of the liquid storage tank 150, and an outlet of the liquid storage tank 150 is connected to an inlet of the compressor 110.
When the air conditioning system heats, all the indoor heat exchange assemblies 2 are in a conducting state. The compressor 110 sucks a low-temperature and low-pressure refrigerant in the outdoor heat exchanger 130, compresses the refrigerant into a high-temperature and high-pressure refrigerant, and inputs the refrigerant into each indoor heat exchange assembly 2 through the first port 11. The high-temperature and high-pressure refrigerant exchanges heat with indoor air in the indoor heat exchanger 21 of the indoor heat exchange assembly 2, so that the effect of increasing the indoor temperature is achieved. Then, the high-temperature and high-pressure refrigerant is converted into a room-temperature and high-pressure refrigerant, and enters the throttle valve 140, and the room-temperature and high-pressure refrigerant is converted into a low-temperature and low-pressure refrigerant and returns to the outdoor heat exchanger 130 under the action of the throttle valve 140, thereby completing a complete heating cycle.
When the air conditioning system is not reversed to defrost, one part of the indoor heat exchange assemblies 2 are in a conducting state, and the other part of the indoor heat exchange assemblies 2 are in a disconnecting state. The high-temperature and high-pressure refrigerant output from the compressor 110 enters the indoor heat exchange assembly 2 in a conducting state and then exchanges heat with indoor air. Since only a part of the indoor heat exchange units 2 can exchange heat, heat exchange of the refrigerant is not sufficient, and the refrigerant output to the throttle valve 140 is a high-temperature and high-pressure refrigerant. In this state, the throttle valve 140 is fully opened, and does not have a throttling function, so that the high-temperature and high-pressure refrigerant can directly enter the outdoor heat exchanger 130, and the outdoor heat exchanger 130 is defrosted.
When the air conditioning system is reversed and defrosted, one part of the indoor heat exchange assemblies 2 is in a conducting state, and the other part of the indoor heat exchange assemblies 2 is in a disconnecting state. The compressor 110 sucks the refrigerant in the indoor heat exchanger 21 of the on-state indoor heat exchange module 2, and converts the refrigerant into a high-temperature and high-pressure refrigerant after compression. The high-temperature and high-pressure refrigerant enters the outdoor heat exchanger 130, thereby defrosting the outdoor heat exchanger 130. And the indoor heat exchanger 21 of the indoor heat exchange assembly 2 in the off state also stores a high-temperature refrigerant, so that the high-temperature refrigerant can be quickly heated again after defrosting is finished.
In this embodiment, the four-way valve 120 can achieve the turning of the flow direction of the refrigerant. A first port a of the four-way valve 120 is connected to an outlet of the compressor 110, a second port b of the four-way valve 120 is connected to a first port of the outdoor heat exchanger 130, a third port c of the four-way valve 120 is connected to the second port 12, and a fourth port d of the four-way valve 120 is connected to an inlet of the liquid storage tank 150.
When the first port a and the second port b of the four-way valve 120 are connected, the third port c and the fourth port d of the four-way valve 120 are connected. At this time, the outlet of the compressor 110 is connected to the first port of the outdoor heat exchanger 130, the second port 12 is connected to the inlet of the liquid storage tank 150, and the air conditioning system is in a cooling mode or a reverse defrosting mode.
When the first port a of the four-way valve 120 is connected to the third port c, the second port b of the four-way valve 120 is connected to the fourth port d. At this time, the outlet of the compressor 110 is connected to the second port 12, the first port of the outdoor heat exchanger 130 is connected to the inlet of the liquid storage tank 150, and the air conditioning system is in a heating mode or a defrosting mode without reversing.
The above description is meant to be illustrative of the principles of the present disclosure and not to be taken in a limiting sense, and any modifications, equivalents, improvements and the like that are within the spirit and scope of the present disclosure are intended to be included therein.
Claims (10)
1. An indoor unit of an air conditioner is characterized by comprising a shell (1) and at least two indoor heat exchange assemblies (2);
the housing (1) has a first interface (11) and a second interface (12);
each indoor heat exchange assembly (2) is located in the shell (1) and connected with the first interface (11) and the second interface (12), and each indoor heat exchange assembly (2) can be connected with or disconnected from the first interface (11) and the second interface (12).
2. The indoor unit of air conditioner according to claim 1, wherein the indoor heat exchange assembly (2) includes an indoor heat exchanger (21) and an on-off valve (22);
the first port of the indoor heat exchanger (21) is connected with the first interface (11), the second port of the indoor heat exchanger (21) is connected with the second interface (12), and the switch valve (22) is arranged at least one of the first port of the indoor heat exchanger (21) and the second port of the indoor heat exchanger (21).
3. The indoor unit of air conditioner according to claim 2, characterized in that the indoor heat exchange assembly (2) includes two of the on-off valves (22);
one of the two on-off valves (22) is connected between a first port of the indoor heat exchanger (21) and the first port (11), and the other of the two on-off valves (22) is connected between a second port of the indoor heat exchanger (21) and the second port (12).
4. The indoor unit of air conditioner according to claim 3, wherein when the indoor unit of air conditioner is in a normal operation state, the on-off valves (22) of all the indoor heat exchange assemblies (2) are in an open state;
when the indoor unit of the air conditioner is in a defrosting state, two switch valves (22) of one part of the indoor heat exchange assemblies (2) are in a conducting state, and two switch valves (22) of the other part of the indoor heat exchange assemblies (2) are in a closing state.
5. The indoor unit of air conditioner according to any one of claims 1 to 4, characterized in that it comprises two of said indoor heat exchange assemblies (2);
the two indoor heat exchange assemblies (2) are connected in parallel.
6. The air-conditioning indoor unit of any one of claims 1 to 4, characterized by further comprising an electric auxiliary heating unit (3);
the electric auxiliary heating assembly (3) is connected with the inner wall of the shell (1), and the electric auxiliary heating assembly (3) is separated from the indoor heat exchange assemblies (2).
7. The indoor unit of air conditioner according to claim 6, characterized in that the electric auxiliary heating unit (3) is in an on state when the temperature of the indoor heat exchange unit (2) is lower than a temperature threshold.
8. An indoor unit of an air conditioner according to claim 6, wherein the shortest distance between the electric supplementary heating unit (3) and each of the indoor heat exchanging units (2) in a direction perpendicular to the electric supplementary heating unit (3) is 12-20mm, respectively.
9. An air conditioning system comprising an outdoor unit (100) of an air conditioner and an indoor unit (200) of an air conditioner according to any one of claims 1 to 8;
the air conditioner outdoor unit (100) comprises a compressor (110), a four-way valve (120), an outdoor heat exchanger (130), a throttle valve (140) and a liquid storage tank (150);
the outlet of the compressor (110) is connected with the four-way valve (120), the four-way valve (120) is connected with the first port of the outdoor heat exchanger (130), the second port of the outdoor heat exchanger (130) is connected with the first port of the throttle valve (140), the second port of the throttle valve (140) is connected with the first interface (11), the second interface (12) is connected with the four-way valve (120), the four-way valve (120) is connected with the inlet of the liquid storage tank (150), and the outlet of the liquid storage tank (150) is connected with the inlet of the compressor (110).
10. The air conditioning system as claimed in claim 9, wherein a first port of the four-way valve (120) is connected to an outlet of the compressor (110), a second port of the four-way valve (120) is connected to a first port of the outdoor heat exchanger (130), a third port of the four-way valve (120) is connected to the second port (12), and a fourth port of the four-way valve (120) is connected to an inlet of the liquid storage tank (150).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220220084.XU CN217178731U (en) | 2022-01-26 | 2022-01-26 | Air conditioner indoor unit and air conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220220084.XU CN217178731U (en) | 2022-01-26 | 2022-01-26 | Air conditioner indoor unit and air conditioning system |
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| Publication Number | Publication Date |
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| CN217178731U true CN217178731U (en) | 2022-08-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN202220220084.XU Active CN217178731U (en) | 2022-01-26 | 2022-01-26 | Air conditioner indoor unit and air conditioning system |
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| Country | Link |
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| CN (1) | CN217178731U (en) |
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2022
- 2022-01-26 CN CN202220220084.XU patent/CN217178731U/en active Active
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