CN111503730B - Air conditioner and method of controlling the same - Google Patents

Air conditioner and method of controlling the same Download PDF

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Publication number
CN111503730B
CN111503730B CN202010296006.3A CN202010296006A CN111503730B CN 111503730 B CN111503730 B CN 111503730B CN 202010296006 A CN202010296006 A CN 202010296006A CN 111503730 B CN111503730 B CN 111503730B
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China
Prior art keywords
cavity
indoor heat
shell
valve
heat exchanger
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CN202010296006.3A
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Chinese (zh)
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CN111503730A (en
Inventor
孟庆好
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Hisense Shandong Air Conditioning Co Ltd
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Hisense Shandong Air Conditioning Co Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0011—Indoor units, e.g. fan coil units characterised by air outlets
    • F24F1/0014—Indoor units, e.g. fan coil units characterised by air outlets having two or more outlet openings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0059—Indoor units, e.g. fan coil units characterised by heat exchangers
    • F24F1/0063—Indoor units, e.g. fan coil units characterised by heat exchangers by the mounting or arrangement of the heat exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0071—Indoor units, e.g. fan coil units with means for purifying supplied air
    • F24F1/0073—Indoor units, e.g. fan coil units with means for purifying supplied air characterised by the mounting or arrangement of filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
    • F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
    • F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/20—Casings or covers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/28—Arrangement or mounting of filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/30—Arrangement or mounting of heat-exchangers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Abstract

The invention discloses an air conditioner and a method for controlling the air conditioner, wherein the air conditioner comprises: the air conditioner comprises a compressor, a reversing device, an outdoor heat exchanger, a throttling device, an air supply outlet and a plurality of indoor heat exchange assemblies; wherein, every indoor heat exchanger group includes: the indoor heat exchanger and the indoor fan are arranged at the corresponding air supply port, and the first end of the indoor heat exchanger is connected with the reversing device; the first end of the electromagnetic valve is connected with the second end of the indoor heat exchanger, and the second end of the electromagnetic valve is connected with the throttling device; the one-way throttling component is connected with the electromagnetic valve in parallel; the air conditioner also comprises a controller, wherein the controller is connected with the control end of the indoor fan and the electromagnetic valve of each indoor heat exchange assembly and is used for acquiring air supply area information and controlling the indoor fan and the electromagnetic valve of each indoor heat exchange assembly according to the air supply area information. The air conditioner can solve the problem of independent control of the air supply temperature in different areas, and is low in cost.

Description

Air conditioner and method of controlling the same
Technical Field
The invention relates to the technical field of air conditioners, in particular to an air conditioner and a method for controlling the air conditioner.
Background
The air conditioner with a plurality of air outlets is usually used for temperature adjustment of large space, but the air outlets can be closed sometimes due to different activities of people in different spaces, so that energy is saved. After the air outlet is closed, the refrigerant of the corresponding part of the indoor heat exchanger also needs to be cut off, and liquid return is prevented.
In the related art, the refrigerant is generally intercepted by using an electromagnetic valve, but the method is feasible during refrigeration, and during heating, because the flowing direction of the refrigerant is opposite, if the refrigerant of the indoor heat exchanger cannot flow, the refrigerant can be gradually condensed, so that liquid accumulation is caused in the indoor heat exchanger, the amount of the refrigerant which can circulate in the whole machine is reduced, and the heating effect is influenced. And if the electromagnetic valve is replaced by an electronic expansion valve, the cost is higher.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, an object of the present invention is to provide an air conditioner, which can solve the problem of independent control of supply air temperature zones and has low cost.
The second objective of the present invention is to provide a method for controlling an air conditioner.
In order to solve the above problem, an embodiment of a first aspect of the present invention provides an air conditioner, including: the heat exchanger comprises a compressor, a reversing device, an outdoor heat exchanger, a throttling device and a plurality of indoor heat exchange assemblies; wherein each of the indoor heat exchanger groups includes: the indoor heat exchanger and the indoor fan are arranged at the corresponding air supply port, and the first end of the indoor heat exchanger is connected with the reversing device; a first end of the electromagnetic valve is connected with a second end of the indoor heat exchanger, and a second end of the electromagnetic valve is connected with the throttling device; the one-way throttling assembly is connected with the electromagnetic valve in parallel and used for throttling and conducting when the refrigerant flows from the indoor heat exchanger to the outdoor heat exchanger; the air conditioner also comprises a controller, wherein the controller is connected with the control ends of the indoor fans and the electromagnetic valves of the indoor heat exchange assemblies and is used for acquiring air supply area information and controlling the indoor fans and the electromagnetic valves of the indoor heat exchange assemblies according to the air supply area information.
According to the air conditioner provided by the embodiment of the invention, based on the arrangement of a plurality of indoor heat exchange assemblies, the indoor heat exchanger of each indoor heat exchange assembly is connected with the electromagnetic valve arranged in parallel, and the controller controls the indoor fan and the electromagnetic valve of each indoor heat exchange assembly to operate or close according to the air supply area information, so that for different air supply areas, the air supply temperature can be freely adjusted according to the requirements of users through the linkage adjustment of the corresponding electromagnetic valve and the indoor fan switch, and the independent control of air supply subareas is realized; the air conditioner provided by the embodiment of the invention is characterized in that the one-way throttling component is arranged in each indoor heat exchange component, when the refrigerant flows from the indoor heat exchanger to the outdoor heat exchanger, the one-way throttling component plays a role in conducting and throttling, and can allow a small amount of refrigerant to flow, so that the problem of liquid accumulation of the indoor heat exchanger is avoided, the heat exchange capacity is improved, and the cost is lower compared with the mode of cutting off the refrigerant by adopting an electronic expansion valve.
In some embodiments, the one-way throttle assembly comprises: the first end of the shell is connected with the second end of the indoor heat exchanger, the second end of the shell is connected with the throttling device, and a circulation cavity is defined between the first end of the shell and the second end of the shell; the first throttling valve is fixed in the shell and is arranged close to the first end of the shell; the second throttle valve is fixed in the shell and is arranged close to the second end of the shell, and a preset distance is reserved between the second throttle valve and the first throttle valve; wherein the first throttle valve and the second throttle valve are throttled in conduction when the refrigerant flows from the first end of the housing to the second end of the housing in the circulation passage, or the first throttle valve and the second throttle valve are throttled when the refrigerant flows from the second end of the housing to the first end of the housing in the circulation passage.
In some embodiments, the first throttle valve comprises: the first valve body is arranged close to the first end of the shell and comprises a first cavity and a second cavity which are arranged along the extending direction of the circulation cavity and are communicated with each other, the cross section area of the second cavity is larger than that of the first cavity, the outer wall of the first cavity is fixedly connected with the inner wall of the shell, a first gap is formed between the outer wall of the second cavity and the inner wall of the shell, and a plurality of first connecting holes are distributed on the wall body of the second cavity close to the first cavity along the circumferential direction; the first valve core is a solid body, the first valve core is arranged in the second cavity, and the first valve core can move in the second cavity along the flowing direction of the refrigerant so as to close or open the first communication hole.
In some embodiments, the first throttle valve further comprises: the first filter screen is fixed in the shell and arranged on one side, close to the first end of the shell, of the first valve body.
In some embodiments, the second throttle valve comprises: the second valve body is arranged close to the second end of the shell and comprises a third cavity and a fourth cavity which are arranged along the extending direction of the circulation cavity and are communicated with each other, the cross sectional area of the fourth cavity is larger than that of the third cavity, the outer wall of the third cavity is fixedly connected with the inner wall of the shell, a second gap is formed between the outer wall of the fourth cavity and the inner wall of the shell, and a plurality of second communication holes are distributed on the wall body of the fourth cavity close to the third cavity along the circumferential direction; and the second valve core is arranged in the fourth cavity, is provided with a throttling channel along the extending direction of the circulation cavity and can move along the flowing direction of the refrigerant in the fourth cavity so as to close or open the second communication hole.
In some embodiments, the second throttle valve further comprises: and the second filter screen is fixed in the shell and is arranged on one side, close to the second end of the shell, of the second valve body.
In some embodiments, the one-way throttle assembly comprises: the first end of the one-way valve is connected with the indoor heat exchanger; and the first end of the fixed throttling piece is connected with the second end of the one-way valve, and the second end of the fixed throttling piece is connected with the throttling device.
In some embodiments, the fixed restriction comprises one of a capillary tube and a throttle valve.
In some embodiments, a first air supply outlet and a second air supply outlet are arranged on two sides of an indoor unit casing of the air conditioner, a first air duct communicated with the first air supply outlet and a second air duct communicated with the second air supply outlet are arranged in the indoor unit casing, and an air return opening is arranged below the indoor unit casing; a first indoor heat exchange assembly is arranged in the first air duct, and a second indoor heat exchange assembly is arranged in the second air duct.
An embodiment of a second aspect of the present invention provides a method for controlling an air conditioner, where the air conditioner includes a compressor, a reversing device, an outdoor heat exchanger, a throttling device, and multiple indoor heat exchange assemblies, where each indoor heat exchange assembly includes an indoor heat exchanger and an indoor fan, an electromagnetic valve, and a one-way throttling assembly, where the indoor heat exchanger is disposed at a corresponding air supply port, a first end of the indoor heat exchanger is connected to the reversing device, a first end of the electromagnetic valve is connected to a second end of the indoor heat exchanger, a second end of the electromagnetic valve is connected to the throttling device, and the one-way throttling assembly is disposed in parallel with the electromagnetic valve, where the method includes: acquiring air supply area information; and controlling the indoor fan and the electromagnetic valve of each indoor heat exchange assembly according to the air supply area information.
The method for controlling the air conditioner according to the embodiment of the invention is based on the arrangement of a plurality of indoor heat exchange assemblies, the indoor heat exchanger of each indoor heat exchange assembly is connected with the electromagnetic valve which is arranged in parallel, the controller is connected with the indoor fan of each indoor heat exchange assembly and the control end of the electromagnetic valve, the operation or the closing of the indoor fan and the electromagnetic valve of each indoor heat exchange assembly is controlled through the air supply area information, so that the air supply temperature can be freely adjusted according to the requirement of a user through the linkage adjustment of the controller to the corresponding electromagnetic valve and the switch of the indoor fan for different air supply areas, the independent control of air supply subareas is realized, and the unidirectional throttling assembly is arranged in each indoor heat exchange assembly in the air conditioner, when the refrigerant flows from the indoor heat exchanger to the outdoor heat exchanger, the effect of conducting throttling is realized, and the unidirectional throttling assembly can allow a small amount of refrigerant to flow, thereby avoid the hydrops problem of this indoor heat exchanger of way, promote heat transfer ability, and the cost is lower.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic connection diagram of an air conditioner according to an embodiment of the present invention;
fig. 2 is a schematic structural view of an indoor heat exchange assembly according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of an indoor structure according to one embodiment of the present invention;
FIG. 4 is a cross-sectional view of a one-way throttle assembly according to an embodiment of the present invention;
fig. 5 is a schematic connection diagram of an air conditioner according to another embodiment of the present invention;
FIG. 6 is a cross-sectional view of a throttle valve according to an embodiment of the present invention;
fig. 7 is a flowchart of a method of controlling an air conditioner according to an embodiment of the present invention;
fig. 8 is a flowchart of a method of controlling an air conditioner according to another embodiment of the present invention.
Reference numerals:
an air conditioner 1000;
a compressor 1; a reversing device 2; an outdoor heat exchanger 3; a throttle device 4; an indoor heat exchange assembly 6; a controller 7;
an indoor heat exchanger 61; an indoor fan 62; an electromagnetic valve 63; a one-way throttle assembly 64;
a first air duct 65; a second air duct 66; an air return opening 67; a first indoor fan 30; a second indoor fan 40; a first indoor heat exchanger 11; a first electromagnetic valve 13; a first one-way throttling assembly 14; the second indoor heat exchanger 21; a second electromagnetic valve 23; a second one-way throttling assembly 24;
a housing 100; a first throttle valve 101; a second throttle valve 102; a first through cavity 31; a second flow-through cavity 32; a third flow-through chamber 33; a first valve body 103; a first cavity 104; a second cavity 105; a first gap 106; a first communication hole 107; a first valve spool 108; a first filter 109; a second valve body 110; a third cavity 111; a fourth cavity 112; a second gap 113; the second communication hole 114; a second spool 115; a throttle passage 116; a second filter 117;
a first check valve 41; a first fixed choke assembly 42; a second check valve 43; a second fixed choke assembly 44; a throttle valve 81.
Detailed Description
Embodiments of the present invention will be described in detail below, the embodiments described with reference to the drawings being illustrative, and the embodiments of the present invention will be described in detail below.
The air conditioner performs functions such as refrigeration/heating circulation or dehumidification through the compressor, the condenser, the expansion valve and the evaporator, can realize the regulation of the indoor environment, and improves the comfort of the indoor environment. The refrigeration cycle includes a series of processes, for example, involving compression, condensation, expansion, and evaporation, and supplies refrigerant to the air that has been conditioned and heat-exchanged.
The compressor compresses a refrigerant gas in a high-temperature and high-pressure state and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and heat is released to the surrounding environment through the condensation process.
The expansion valve expands the liquid-phase refrigerant in a high-temperature and high-pressure state condensed in the condenser into a low-pressure liquid-phase refrigerant. The evaporator evaporates the refrigerant expanded in the expansion valve and returns the refrigerant gas in a low-temperature and low-pressure state to the compressor. The evaporator can achieve a cooling effect by heat-exchanging with a material to be cooled using latent heat of evaporation of a refrigerant. The air conditioner can adjust the temperature of the indoor space throughout the cycle.
The air conditioner provides a comfortable indoor environment for a user through a cooling or heating mode. To different spaces, because crowd's activity time is different, can close the air outlet sometimes, but close the back at the air outlet, the refrigerant of the indoor heat exchanger of corresponding part then can condense because of unable flow to cause the hydrops in indoor heat exchanger, make the circulated refrigerant of complete machine reduce, influence the effect of heating.
In order to solve the above problems, an air conditioner according to an embodiment of the present invention, which can solve the problem of the supply air temperature zone independent control and is low in cost, will be described below with reference to the accompanying drawings.
Fig. 1 is a schematic diagram of a refrigerant cycle system of an air conditioner according to an embodiment of the first aspect of the present invention, and as shown in fig. 1, an air conditioner 1000 according to an embodiment of the present invention includes a compressor 1, a reversing device 2, an outdoor heat exchanger 3, a throttling device 4, a plurality of indoor heat exchange assemblies 6, and a controller (not shown). The indoor casing of the air conditioner 1000 according to the embodiment of the present invention may have a plurality of air outlets corresponding to different air supply areas, and an indoor heat exchange assembly 6 corresponding to each air outlet, so as to achieve indoor zoned air supply.
As shown in fig. 2, each indoor heat exchanger group 6 includes an indoor heat exchanger 61, an indoor fan 62, a solenoid valve 63, and a one-way throttle assembly 64. Wherein, indoor heat exchanger 61 and indoor fan 62 all set up in corresponding air supply port department, namely every air supply port department all is provided with corresponding indoor heat exchanger 61 and indoor fan 62, the first end and the switching-over device 2 of indoor heat exchanger 61 are connected, the first end and the second end of indoor heat exchanger 61 of solenoid valve 63 are connected, the second end and the throttling arrangement 4 of solenoid valve 63 are connected, one-way throttle subassembly 64 and the parallelly connected setting of solenoid valve 63 for the refrigerant from indoor heat exchanger 61 to outdoor heat exchanger 3 when flowing the throttle switch-on.
And the controller 7 is connected with the control ends of the indoor fan 62 and the electromagnetic valve 63 of each indoor heat exchange assembly 6, and is used for acquiring air supply area information and controlling the indoor fan 62 and the electromagnetic valve 63 of each indoor heat exchange assembly 6 according to the air supply area information. For example, the indoor fan 62 and the electromagnetic valve 63 of the indoor heat exchange assembly 6 corresponding to the air supply area are controlled to maintain operation, so that air supply of the air supply area is realized, the indoor fan 62 and the electromagnetic valve 63 of the indoor heat exchange assembly 6 corresponding to the air supply area are controlled to be closed, so that the air supply temperature can be freely adjusted according to the user requirement through linkage adjustment of the switches of the corresponding electromagnetic valve 63 and the indoor fan 62 for different air supply areas, and the problem of independent control of the air supply temperature in different areas is solved.
For example, the one-way throttling component 64 of the embodiment of the present invention may be throttled and turned on in a heating mode, as shown in fig. 1, that is, in a cut-off state when the refrigerant enters the indoor heat exchanger 61 along the throttling device 4, and in a conducting and throttling state when the refrigerant enters the throttling device 4 along the indoor heat exchanger 61, so that when a certain air blowing port is closed, the electromagnetic valve 63 corresponding to the air blowing port is also closed, but since other air blowing areas in the air conditioner 1000 are not closed, the refrigerant still flows, so that a small amount of gaseous refrigerant always flows through the indoor heat exchanger 61 corresponding to the air blowing port, and at this time, the one-way throttling component 64 corresponding to the air blowing port may play a role in conducting and throttling, that is, the one-way throttling component 64 may allow a small amount of refrigerant to flow, so that a small amount of gaseous refrigerant in the indoor heat exchanger 61 may enter the throttling device 4 through the one-way throttling component 64, and can not condense gradually in indoor heat exchanger 61, avoided forming the hydrops at indoor heat exchanger 61, and do not receive the influence of air conditioner 1000 mode, need not to distinguish refrigeration mode or heating mode.
Therefore, the air conditioner 1000 according to the embodiment of the present invention can perform corresponding control on different air supply areas only by performing linked adjustment on the switch of the electromagnetic valve 63 and the switch of the indoor fan 62 through the controller 7, the control mode is simple, and the arrangement based on the one-way throttling assembly 64 can avoid the problem of liquid accumulation of the indoor heat exchanger 61, improve the heat exchange capability, and improve the reliability.
The following describes the operation mode of the air conditioner 1000 according to the embodiment of the present invention, taking the example of providing two air supply ports in the air conditioner 1000.
The air conditioner 1000 is respectively directed at two air supply areas, and includes two air supply outlets, i.e., the two sides of the indoor unit casing are provided with a first air supply outlet and a second air supply outlet, each air supply outlet is provided with a corresponding air duct, and a corresponding first indoor heat exchange assembly and a corresponding second indoor heat exchange assembly are respectively arranged in the air duct. As shown in fig. 3, a first air duct 65 communicating with the first air supply outlet is provided in the indoor unit casing, and a corresponding first indoor heat exchanger 11 and a corresponding first indoor fan 30 are provided in the first air duct 65, and a second air duct 66 communicating with the second air supply outlet is provided in the second air duct 66, and a corresponding second indoor heat exchanger 21 and a corresponding first indoor fan 40 are provided in the second air duct, and an air return opening 67 is provided below the indoor unit casing.
As shown in fig. 1, in the cooling mode, the refrigerant does not flow from the port b to the port a in the flow direction to the one-way throttling assembly 64, and the one-way throttling assembly 64 is in the off state. When the air conditioner 1000 is in operation, refrigerant is compressed by the compressor 1, then enters the outdoor heat exchanger 3 from the reversing device 2 for condensation, is throttled by the throttling device 4 and then is divided into two parts, the first part enters the first indoor heat exchanger 11 for evaporation and refrigeration through the opened first electromagnetic valve 13, the other part enters the second indoor heat exchanger 21 for evaporation and refrigeration through the opened second electromagnetic valve 23, and evaporated gaseous refrigerant is converged and then returns to the compressor 1 through the reversing device 2. If a certain air supply outlet does not need to supply cold air, taking the air supply area corresponding to the first indoor heat exchanger 11 as an example, the corresponding first indoor fan 30 can be closed, the corresponding air supply outlet can be closed, and the corresponding first electromagnetic valve 13 can be closed, at this time, because the one-way throttling component 64 is in a cut-off state, no refrigerant flows in the first indoor heat exchanger 11, and no liquid return can be generated due to no heat exchange.
In the heating mode, the refrigerant is throttled in the one-way throttling assembly 64 from the port a to the port b in the flow direction, and the one-way throttling assembly 64 is in a throttled state. When the air conditioner 1000 is in operation, refrigerant is compressed by the compressor 1, then is divided into two parts after passing through the reversing device 2, the first part enters the first indoor heat exchanger 11 for condensation and heat dissipation, then flows to the outdoor after passing through the first electromagnetic valve 13, the other part is condensed and heat dissipation through the second indoor heat exchanger 21, then flows to the outdoor after passing through the second electromagnetic valve 23 and being converged with the first part, and is evaporated in the outdoor heat exchanger 3 after being throttled and reduced in pressure by the throttling device 4, and the evaporated gaseous refrigerant returns to the compressor 1 through the reversing device 2. If when a certain air supply outlet does not need to supply hot air, taking the air supply area corresponding to the first indoor heat exchanger 11 as an example, the corresponding first indoor fan 30 can be closed, the corresponding air supply outlet is closed, and the corresponding first electromagnetic valve 13 is closed, at this time, because the one-way throttling component 64 has a throttling function from the opening a to the opening b, only a small amount of refrigerant passes through the first indoor heat exchanger 11, and most of refrigerant is radiated through the second indoor heat exchanger 21, so even if the first indoor heat exchanger 11 always has a small amount of gaseous refrigerant, no liquid accumulation in the first indoor heat exchanger 11 can be caused, and the air supply area corresponding to the second indoor heat exchanger 21 can also keep a good heating effect.
Therefore, the air conditioner 1000 according to the embodiment of the present invention has the one-way throttling component 64 disposed in each indoor heat exchange component 6, and when the refrigerant flows from the indoor heat exchanger to the outdoor heat exchanger, the one-way throttling component plays a role of conducting throttling, and allows a small amount of refrigerant to flow, so that the refrigerant does not condense in the indoor heat exchanger 61, and the heating mode or the cooling mode does not need to be distinguished, thereby avoiding the problem of liquid accumulation in the indoor heat exchanger 61, improving the heat exchange capability, and having lower cost compared with a mode of cutting off the refrigerant by using an electronic expansion valve.
According to the air conditioner 1000 of the embodiment of the invention, based on the arrangement of a plurality of indoor heat exchange assemblies 6, the indoor heat exchanger 61 of each indoor heat exchange assembly 6 is connected with the electromagnetic valve 63 arranged in parallel, the controller 7 controls the operation or closing of the indoor fan 62 and the electromagnetic valve 63 of each indoor heat exchange assembly 6 according to the air supply area information, so that for different air supply areas, the air supply temperature can be freely adjusted according to the requirements of users through the linkage adjustment of the switches of the corresponding electromagnetic valve 63 and the indoor fan 62, and the independent control of air supply subareas is realized, and the air conditioner 1000 of the embodiment of the invention, based on the arrangement of the one-way throttling assembly 64 in each indoor heat exchange assembly 6, when the refrigerant flows from the indoor heat exchanger 61 to the outdoor heat exchanger 3, the one-way throttling assembly 64 can allow a small amount of refrigerant to flow, thereby avoiding the problem of liquid accumulation of the indoor heat exchanger 61, the heat exchange capacity is improved, and compared with a mode of cutting off the refrigerant by adopting an electronic expansion valve, the cost is lower.
In an embodiment, one-way throttle assembly 64 may be a one-way throttle valve, as shown in fig. 4, one-way throttle assembly 64 including a housing 100, a first throttle valve 101, and a second throttle valve 102.
Specifically, a first end a of the casing 100 is connected to a second end b of the indoor heat exchanger 61, a second end of the casing 100 is connected to the throttling device 4, and a circulation cavity is defined between the first end a of the casing 100 and the second end b of the casing 100, as shown in fig. 4, three circulation cavities, namely, a first circulation cavity 31, a second circulation cavity 32, and a third circulation cavity 33, are included in the casing 100. The first throttle valve 101 is fixed in the housing 100 and disposed near the first end a of the housing 100; the second throttle valve 102 is fixed in the housing 100 to be disposed near the second end b of the housing 100, and the second throttle valve 102 is spaced a predetermined distance from the first throttle valve 101. Wherein the first throttle valve 101 and the second throttle valve 102 are throttled in a conducting manner while the refrigerant flows from the first end a of the casing 100 to the second end b of the casing 100 in the flow passage, or the first throttle valve 101 and the second throttle valve 102 are throttled in a stopping manner while the refrigerant flows from the second end b of the casing 100 to the first end a of the casing 100 in the flow passage.
In the embodiment, as shown in fig. 4, the first throttle valve 101 includes a first valve body 103 and a first spool 108.
Specifically, the first valve body 103 is disposed near the first end a of the casing 100, the first valve body 103 includes a first cavity 104 and a second cavity 105 disposed along the extending direction of the flow cavity and communicated with each other, the cross-sectional area of the second cavity 105 is larger than that of the first cavity 104, the outer wall of the first cavity 104 is fixedly connected with the inner wall of the casing 100, a first gap 106 is formed between the outer wall of the second cavity 105 and the inner wall of the casing 100, and a plurality of first communication holes 107 are distributed along the circumferential direction at the position where the wall of the second cavity 105 is close to the first cavity 104. The first valve spool 108 is a solid body, the first valve spool 108 is disposed in the second chamber 105, and the first valve spool 108 is movable in the refrigerant flow direction in the second chamber 105 to close or open the first communication hole 107.
In an embodiment, the total area of the plurality of first communication holes 107 after being added is larger than the cross-sectional area of the first cavity 104.
In an embodiment, the first throttle valve 101 further includes a first filter 109, and the first filter 109 is fixed in the housing 100 and disposed on a side of the first valve body 103 close to the first end a of the housing 100.
In an embodiment, the second throttle valve 102 includes a second valve body 110 and a second spool 115.
The second valve body 110 is disposed near the second end b of the housing 100, the second valve body 110 includes a third cavity 111 and a fourth cavity 112 disposed along the extending direction of the flow-through cavity and communicated with each other, the cross-sectional area of the fourth cavity 112 is greater than that of the third cavity 111, the outer wall of the third cavity 111 is fixedly connected with the inner wall of the housing 100, a second gap 113 is formed between the outer wall of the fourth cavity 112 and the inner wall of the housing 100, and a plurality of second communication holes 114 are distributed along the circumferential direction at the position where the wall of the fourth cavity 112 is close to the third cavity 111. The second spool 115 is disposed in the fourth chamber 112, and the second spool 115 is provided with a throttling passage 116 along the extending direction of the circulation chamber, and the second spool 115 is movable in the refrigerant flow direction in the fourth chamber 112 to close or open the second communication hole 114.
In the embodiment, the total area after the plurality of second communication holes 114 are added is larger than the cross-sectional area of the third cavity 111.
In an embodiment, the second throttle valve 102 further includes a second filter 117, and the second filter 117 is fixed in the housing 100 and disposed on a side of the second valve body 110 close to the second end b of the housing 100.
That is, as shown in fig. 4, when the refrigerant flows from the first end a to the second end b, the refrigerant enters from the first end a, flows through the first flow-through chamber 31 and is filtered by the first filter 109 to the first chamber 104, pushes the first valve element 108 to move rightward, enters the second flow-through chamber 32 from the plurality of first communication holes 107, continues to push the second valve element 115 to move rightward, closes the second communication hole 114, allows only a small amount of refrigerant to pass through the throttle passage 116, reaches the third chamber 111, continues to be filtered by the second filter 117 and flows through the third flow-through chamber 33, and then flows out from the second end b.
And when the refrigerant flows from the second end b to the first end a, the refrigerant enters from the second end b, flows through the third flow-through chamber 33 and is filtered by the second filter 117 to the third chamber 111, pushes the second valve element 115 to move leftward, enters the second flow-through chamber 32 from the plurality of second communication holes 114, continues to push the first valve element 108 to move leftward, closes the first communication hole 107, and stops flowing out from the first end a.
In an embodiment, the one-way throttling assembly 64 of an embodiment of the present invention may include a one-way valve and a fixed throttling assembly, as shown in fig. 5, taking two air supply regions in the air conditioner 1000 as an example, a first end of the first one-way valve 41 is connected to the first indoor heat exchanger 11, a first end of the first fixed throttling member 42 is connected to a second end of the first one-way valve 41, and a second end of the first fixed throttling member 42 is connected to the throttling device 4; a first end of the second check valve 43 is connected to the first indoor heat exchanger 21, a first end of the second fixed choke assembly 44 is connected to a second end of the second check valve 43, and a second end of the second fixed choke assembly 44 is connected to the choke device 4.
In an embodiment, the fixed throttle may include one of a capillary tube and a throttle valve, or other elements that achieve throttling.
Taking the throttle valve as an example, as shown in fig. 6, the throttle valve 81 has a one-way throttle function. And the one-way valve can control the flow in one direction to be conducted, and the flow in the other direction to be stopped and not conducted. Therefore, the one-way valve can be set to be in a cut-off state when the refrigerant enters the indoor heat exchanger 61 along the throttling device 4 and be in a conducting state when the refrigerant enters the throttling device 4 along the indoor heat exchanger 61, and the refrigerant is enabled to achieve the effect of conducting and throttling when flowing from the end c to the end d by combining the throttling function of the throttling valve 81, so that the liquid accumulation problem of the indoor heat exchanger 61 in the heating mode is avoided.
The embodiment of the second aspect of the invention provides a method for controlling an air conditioner, wherein the air conditioner comprises a compressor, a reversing device, an outdoor heat exchanger, a throttling device and a plurality of indoor heat exchange assemblies, each indoor heat exchange assembly comprises an indoor heat exchanger and an indoor fan which are arranged at a corresponding air supply opening, an electromagnetic valve and a one-way throttling assembly, the first end of each indoor heat exchanger is connected with the reversing device, the first end of each electromagnetic valve is connected with the second end of each indoor heat exchanger, the second end of each electromagnetic valve is connected with the throttling device, and the one-way throttling assembly is connected with the electromagnetic valves in parallel.
As shown in fig. 7, the method of controlling an air conditioner according to an embodiment of the present invention includes steps S1 to S2.
In step S1, air supply area information is acquired.
In an embodiment, the indoor casing of the air conditioner in the embodiment of the invention can be provided with a plurality of air supply outlets, the plurality of air supply outlets correspond to different air supply areas, and each air supply outlet is provided with an indoor heat exchange assembly so as to realize indoor zoned air supply. For different air supply areas, a user can select a required air supply state through the mobile device, signals are sent to the air conditioner, and the controller in the air conditioner can acquire air supply area information.
And step S2, controlling the indoor fan and the electromagnetic valve of the corresponding indoor heat exchange assembly according to the air supply area information.
In an embodiment, the controller may determine a user-desired air supply state at each air supply port based on the acquired air supply area information. For the air supply non-area, the controller can control the indoor fan and the electromagnetic valve of the corresponding indoor heat exchange assembly to be closed, the air conditioner continues to operate to supply air to the air supply area, and the controller re-determines the air supply area information until a certain air supply area reaches the set temperature or a user changes the air supply area information. Therefore, for different air supply areas, the air supply temperature can be freely adjusted according to the requirements of users by the linkage adjustment of the electromagnetic valve and the indoor fan switch through the controller, and the problem of independent control of the air supply temperature in different areas is solved.
Meanwhile, based on the one-way throttling component arranged in the embodiment of the invention, when the refrigerant flows from the indoor heat exchanger to the outdoor heat exchanger and the air supply outlet is closed, the one-way throttling component plays a role in conducting and throttling, can allow a small amount of refrigerant to flow, so that the refrigerant cannot be condensed in the indoor heat exchanger, and a heating mode or a refrigerating mode does not need to be distinguished, so that the problem of liquid accumulation of the indoor heat exchanger is avoided, the heat exchange capacity is improved, and the cost is lower compared with a mode of cutting off the refrigerant by adopting an electronic expansion valve.
The method for controlling the air conditioner according to the embodiment of the invention is based on the arrangement of a plurality of indoor heat exchange assemblies, the indoor heat exchanger of each indoor heat exchange assembly is connected with the electromagnetic valve which is arranged in parallel, the controller is connected with the indoor fan of each indoor heat exchange assembly and the control end of the electromagnetic valve, the operation or closing of the indoor fan and the electromagnetic valve of the corresponding indoor heat exchange assembly is controlled through the air supply area information, therefore, for different air supply areas, the air supply temperature can be freely adjusted according to the requirement of a user through the linkage adjustment of the controller to the corresponding electromagnetic valve and the switch of the indoor fan, the problem of independent control of the air supply temperature in different areas is solved, and the unidirectional throttling assembly is arranged in each indoor heat exchange assembly in the air conditioner, when the refrigerant flows from the indoor heat exchanger to the outdoor heat exchanger, the throttling effect is achieved, and the unidirectional throttling assembly can allow a small amount of refrigerant to flow, thereby avoid indoor heat exchanger's hydrops problem, promote heat transfer ability, and the cost is lower.
The following describes, with reference to fig. 8, a method for controlling an air conditioner according to an embodiment of the present invention, taking an example in which the air conditioner has two air supply areas, and the following steps are specifically performed.
In step S4, the air conditioner is turned on and the process proceeds to step S5.
In step S5, the air supply area is determined.
In step S6, the air supply to all the regions is determined, and the process proceeds to step S7.
In step S7, all the solenoid valves are controlled to open, and the process advances to step S12.
In step S8, no air is blown into the first indoor heat exchanger area, and the process proceeds to step S9.
In step S9, the first solenoid valve is closed, and the process advances to step S12.
In step S10, no air is blown into the second indoor heat exchanger area, and the process proceeds to step S11.
In step S11, the second electromagnetic valve is closed, and the process advances to step S12.
In step S12, the area reaches the temperature or the air supply area is changed, and the process proceeds to step S5.
In summary, the air conditioner according to the embodiment of the invention can correspondingly control different air supply areas only by performing linkage adjustment on the electromagnetic valve and the indoor fan switch through the controller, the control mode is simple, and based on the arrangement of the one-way throttling component, the problem of liquid accumulation of the indoor heat exchanger in a heating mode can be avoided, the heat exchange capability is improved, and the reliability is improved.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (8)

1. An air conditioner, comprising:
the heat exchanger comprises a compressor, a reversing device, an outdoor heat exchanger, a throttling device and a plurality of indoor heat exchange assemblies;
wherein, every indoor heat exchange assembly includes:
the indoor heat exchanger and the indoor fan are arranged at the corresponding air supply port, and the first end of the indoor heat exchanger is connected with the reversing device;
a first end of the electromagnetic valve is connected with a second end of the indoor heat exchanger, and a second end of the electromagnetic valve is connected with the throttling device;
the one-way throttling assembly is connected with the electromagnetic valve in parallel and used for throttling and conducting when a refrigerant flows from the indoor heat exchanger to the outdoor heat exchanger, the one-way throttling assembly comprises a shell, a first throttling valve and a second throttling valve, a circulation cavity is defined between two ends of the shell, and the first throttling valve and the second throttling valve are arranged at two ends in the shell respectively at a preset distance;
the first throttle valve includes:
the first valve body is arranged close to one end of the shell and comprises a first cavity and a second cavity which are arranged along the extending direction of the circulation cavity and are communicated with each other, the cross section area of the second cavity is larger than that of the first cavity, the outer wall of the first cavity is fixedly connected with the inner wall of the shell, a first gap is formed between the outer wall of the second cavity and the inner wall of the shell, and a plurality of first connecting holes are distributed on the wall body of the second cavity close to the first cavity along the circumferential direction;
the first valve core is a solid body, the first valve core is arranged in the second cavity, and the first valve core can move in the flow direction of the refrigerant in the second cavity so as to close or open the first communication hole;
the air conditioner also comprises a controller, wherein the controller is connected with the control end of the indoor fan and the electromagnetic valve of each indoor heat exchange assembly and is used for acquiring air supply area information and controlling the indoor fan and the electromagnetic valve of each indoor heat exchange assembly according to the air supply area information;
the first end of the shell is connected with the second end of the indoor heat exchanger, the second end of the shell is connected with the throttling device, and a circulation cavity is defined between the first end of the shell and the second end of the shell;
the first throttle valve is fixed in the shell and is arranged close to the first end of the shell;
the second throttle valve is fixed in the shell and is arranged close to the second end of the shell;
wherein the first throttle valve and the second throttle valve are throttled in conduction as the refrigerant flows from the first end of the housing to the second end of the housing in the circulation passage, and the first throttle valve and the second throttle valve are throttled in cutoff as the refrigerant flows from the second end of the housing to the first end of the housing in the circulation passage.
2. The air conditioner as claimed in claim 1, wherein the first throttle valve further comprises:
the first filter screen is fixed in the shell and arranged on one side, close to the first end of the shell, of the first valve body.
3. The air conditioner as claimed in claim 1, wherein the second throttle valve comprises:
the second valve body is arranged close to the second end of the shell and comprises a third cavity and a fourth cavity which are arranged along the extending direction of the circulation cavity and are communicated with each other, the cross sectional area of the fourth cavity is larger than that of the third cavity, the outer wall of the third cavity is fixedly connected with the inner wall of the shell, a second gap is formed between the outer wall of the fourth cavity and the inner wall of the shell, and a plurality of second communication holes are distributed on the wall body of the fourth cavity close to the third cavity along the circumferential direction;
and the second valve core is arranged in the fourth cavity, is provided with a throttling channel along the extending direction of the circulation cavity and can move along the flowing direction of the refrigerant in the fourth cavity so as to close or open the second communication hole.
4. The air conditioner as claimed in claim 3, wherein the second throttle valve further comprises:
and the second filter screen is fixed in the shell and is arranged on one side, close to the second end of the shell, of the second valve body.
5. The air conditioner of claim 1, wherein the one-way throttle assembly comprises:
the first end of the one-way valve is connected with the indoor heat exchanger;
and the first end of the fixed throttling piece is connected with the second end of the one-way valve, and the second end of the fixed throttling piece is connected with the throttling device.
6. The air conditioner according to claim 5, wherein the fixed throttle includes one of a capillary tube and a throttle valve.
7. The air conditioner according to claim 1,
a first air supply outlet and a second air supply outlet are arranged on two sides of an indoor unit shell of the air conditioner;
a first air duct communicated with the first air supply outlet and a second air duct communicated with the second air supply outlet are arranged in the indoor unit shell, and an air return opening is arranged below the indoor unit shell;
a first indoor heat exchange assembly is arranged in the first air duct, and a second indoor heat exchange assembly is arranged in the second air duct.
8. A method of controlling an air conditioner, for use in the air conditioner of any one of claims 1-7, the method comprising:
acquiring air supply area information;
and controlling the indoor fan and the electromagnetic valve of each indoor heat exchange assembly according to the air supply area information.
CN202010296006.3A 2020-04-15 2020-04-15 Air conditioner and method of controlling the same Active CN111503730B (en)

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CN201621908U (en) * 2010-02-26 2010-11-03 赵敏 Bidirectional movable throttle valve
CN202630537U (en) * 2012-06-01 2012-12-26 宁波日月制冷设备有限公司 Dual-way movable-type throttle valve
CN102767923A (en) * 2012-06-26 2012-11-07 广东美的暖通设备有限公司 Throttling device and air conditioner adopting same
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