CN109579140B - Air conditioner indoor unit, air conditioner and refrigeration control method thereof - Google Patents
Air conditioner indoor unit, air conditioner and refrigeration control method thereof Download PDFInfo
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- CN109579140B CN109579140B CN201811327570.6A CN201811327570A CN109579140B CN 109579140 B CN109579140 B CN 109579140B CN 201811327570 A CN201811327570 A CN 201811327570A CN 109579140 B CN109579140 B CN 109579140B
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- 238000000034 method Methods 0.000 title claims abstract description 58
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- 239000003507 refrigerant Substances 0.000 claims description 89
- 238000002955 isolation Methods 0.000 claims description 34
- 238000004781 supercooling Methods 0.000 claims description 10
- 230000007246 mechanism Effects 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 6
- 230000000903 blocking effect Effects 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 15
- 238000004378 air conditioning Methods 0.000 description 14
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0059—Indoor units, e.g. fan coil units characterised by heat exchangers
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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
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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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
- 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
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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
- 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
- F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
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- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Signal Processing (AREA)
- Thermal Sciences (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Fluid Mechanics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses an air conditioner indoor unit, an air conditioner and a refrigeration control method thereof, relates to the technical field of air conditioners, and aims to improve the heat exchange effect. The air conditioner indoor unit group comprises an indoor machine case, wherein the indoor machine case is provided with an air inlet and an air outlet; the first air flow partition structure is arranged in the indoor machine case so as to partition the area in the indoor machine case into a plurality of groups of isolated air channels; and the second air flow partition structure is arranged in the air duct so as to partition the air duct into an air inlet air duct and an air outlet air duct which are separated, two ends of the air inlet air duct and the air outlet air duct are respectively communicated with a corresponding air inlet and an air outlet on the indoor machine case, and an indoor fan and an indoor heat exchanger are respectively arranged in the air inlet air duct and the air outlet air duct. The air conditioner indoor unit, the air conditioner and the refrigeration control method thereof can perform one-to-one heat exchange on equipment to be subjected to heat exchange, and have good heat exchange effect.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to an air conditioner indoor unit, an air conditioner and a refrigeration control method thereof.
Background
Along with the promotion of communication computer lab transmission equipment capacity, its power density is also bigger and bigger, consequently solves the degree of difficulty of transmission equipment heat dissipation problem also bigger and bigger, and high power density transmission equipment is after old computer lab deployment, and local overheated is more common problem, and the leading cause that appears this problem is transmission equipment rack homonymy business turn over wind, and the air current is organized disorderly to the air conditioner of old communication computer lab can't provide the heat transfer of the local large circulation amount of wind, aggravates the production of overheated problem.
The traditional methods for solving the problem of local overheating of the transmission equipment are three, namely, the temperature of the whole communication machine room is reduced to avoid the phenomenon of local overhigh temperature of the transmission equipment; secondly, a fixed air conditioner is added locally for directional air supply and refrigeration; and thirdly, transforming a transmission equipment cabinet and additionally arranging a cold and hot air flow isolation assembly and an inter-row air conditioner.
The technical problems generated by the three solutions are as follows: the first method has the problems that the whole communication machine room is cooled, and the phenomenon of local over-cooling is easy to occur, so that the energy consumption is wasted; the second method has the problems that a newly-added air conditioner cannot be redeployed after being installed, and once the type of the communication equipment at the position is changed, the air conditioner is idle; the third method has the problem that the method can only be applied to the condition that the existing machine room has sufficient space and the high-power-density transmission equipment cabinets are arranged in a centralized manner, and is not suitable for the medium-small machine rooms with a small number of high-power-density transmission cabinets, so that the method needs transmission equipment to form a certain scale. Therefore, an air conditioner which can refrigerate transmission equipment needing cooling in a one-to-one manner and has strong universality is needed.
Disclosure of Invention
The embodiment of the invention provides an air conditioner indoor unit, an air conditioner and a refrigeration control method thereof, and mainly aims to perform one-to-one heat exchange on equipment to be heated in a unit to be heat exchanged, and an air inlet duct and an air outlet duct are separated, so that the phenomenon that the heat exchange effect is influenced by cold and hot airflow disorder is avoided.
In order to achieve the above purpose, the embodiment of the invention adopts the following technical scheme:
an indoor unit of an air conditioner, comprising:
an indoor chassis having an air inlet and an air outlet;
the first air flow partition structure is arranged in the indoor machine case so as to partition the area in the indoor machine case into a plurality of groups of air channels which are not communicated with each other;
the second air flow cuts off the structure, the second air flow cuts off the structure setting in the wind channel, in order to incite somebody to action the wind channel cuts off into the air inlet wind channel and the air-out wind channel that do not communicate, the air inlet wind channel with the both ends in air-out wind channel respectively with on the indoor set of the machine corresponding the air intake with the air outlet is linked together, just the air inlet wind channel with all install indoor fan and indoor heat exchanger in the air-out wind channel.
According to the air conditioner indoor unit provided by the embodiment of the invention, the plurality of air channels which are not communicated with each other are arranged, so that one-to-one heat exchange can be carried out on a plurality of devices to be subjected to heat exchange in the unit to be subjected to heat exchange, and mutual interference can be avoided, thus local heat exchange can be carried out on the unit to be subjected to heat exchange, and the phenomenon of high local temperature is avoided; meanwhile, any air channel is separated into an air inlet air channel and an air outlet air channel which are not communicated, when in specific heat exchange, the air inlet air channel is communicated with the air inlet of the equipment to be heated, and the air outlet air channel is communicated with the air outlet of the equipment to be heated, so that cold air flow entering the equipment to be heated can be separated from hot air flow flowing out of the equipment to be heated, the phenomenon that the air flow is disordered and the heat exchange effect is influenced is avoided, and the refrigerating effect of each equipment to be heated is effectively improved.
An embodiment of another aspect of the present invention further provides an air conditioner, including:
an outdoor unit, the outdoor unit comprising: the outdoor heat exchanger comprises an outdoor case, and an outdoor fan, a compressor, an outdoor heat exchanger and a refrigerant booster pump which are arranged in the outdoor case, wherein the compressor, the outdoor heat exchanger and the refrigerant booster pump are sequentially communicated;
the indoor unit is the air-conditioning indoor unit, the outdoor heat exchanger is communicated with the indoor heat exchanger, and a throttling device is arranged on a pipeline communicated with the indoor heat exchanger; the air duct of any one of the air-conditioning indoor units, the indoor fan and the indoor heat exchanger which are installed in the air inlet duct and the indoor fan and the indoor heat exchanger which are installed in the air outlet duct form a sub-indoor unit.
The air conditioner provided by the embodiment of the invention has the air conditioner indoor unit, so that on the basis of one-to-one heat exchange of a plurality of devices to be heated, the air flow flowing into the devices to be heated and the air flow led out by the devices to be heated are isolated, and the heat exchange effect of each device to be heated is effectively improved; and the problems of liquid refrigerant pressure drop and flash caused by overlong connecting pipelines of the indoor heat exchanger and the outdoor heat exchanger are solved through the refrigerant booster pump provided by the outdoor unit.
Another embodiment of the present invention further provides a refrigeration method of an air conditioner, including:
starting the air conditioner: starting the air conditioner, and controlling at least part of indoor fans in all the indoor fans to initially operate at a fixed rotating speed F0;
determining a refrigerating sub-indoor unit: determining a sub indoor unit needing to start a refrigeration mode according to a refrigeration preset condition, and enabling the sub indoor unit needing to start the refrigeration mode to be a refrigeration sub indoor unit; starting the compressor, the refrigerant booster pump and the corresponding throttling devices in the refrigerating sub indoor unit, wherein the compressor initially operates at a fixed rotating speed Sc and the refrigerant booster pump initially operates at a fixed rotating speed Sp;
controlling the rotating speed of the refrigerant booster pump: collecting the refrigerant inlet pressure Pc of the refrigerant booster pump and the refrigerant inlet pressure Pi of the refrigerating sub-indoor unit, and calculating the refrigerant pressure difference P△Pc-Pi, preset value P of pressure difference of refrigerant△s is used as a target, and a first rotating speed value of the refrigerant booster pump is determined according to a PID control method; collecting a refrigerant inlet temperature Tli of the refrigerating sub-indoor unit, calculating a refrigerant inlet saturation temperature Tl through the refrigerant inlet pressure Pi, calculating a refrigerant inlet supercooling degree Tuc which is Tl-Tli, and determining a second rotating speed value of the refrigerant booster pump according to a PID control method by taking a supercooling degree set value Tuc as a target; and determining the maximum one of the first rotating speed value and the second rotating speed value as a target rotating speed value, and controlling the rotating speed of the refrigerant booster pump by using the target rotating speed value.
According to the refrigeration control method of the air conditioner, when the refrigeration sub indoor unit corresponding to the equipment to be heated is started to operate, the rotating speed of the refrigerant booster pump is adjusted according to the pressure loss of the connecting pipeline of the indoor unit and the outdoor unit and the supercooling degree of the refrigerant entering the refrigerant inlet of the refrigeration sub indoor unit, so that the lengths of the connecting pipeline of the indoor heat exchanger and the outdoor heat exchanger are ensured as much as possible, and the refrigeration sub indoor unit can still provide the liquid refrigerant with the target supercooling degree and sufficient flow.
Drawings
Fig. 1 is a schematic view illustrating an installation relationship between an indoor unit of an air conditioner and a unit to be heat exchanged according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an air conditioner indoor unit according to an embodiment of the present invention;
FIG. 3 is a view taken along line A of FIG. 2;
fig. 4 is a schematic diagram illustrating the operation principle of the indoor unit of the air conditioner provided in fig. 2;
fig. 5 is a schematic structural diagram of an indoor unit of another air conditioner according to an embodiment of the present invention;
FIG. 6 is a view from the direction B of FIG. 5;
fig. 7 is a schematic diagram illustrating the operation of the indoor unit of the air conditioner provided in fig. 5;
fig. 8 is a schematic structural diagram of an outdoor unit according to an embodiment of the present invention;
FIG. 9 is a top view of FIG. 8 with the outdoor fan removed;
fig. 10 is a schematic view illustrating an operation principle of the outdoor unit provided in fig. 8;
fig. 11 is a schematic structural diagram of an air conditioner according to an embodiment of the present invention;
fig. 12 is a block flow diagram illustrating a method for controlling cooling of an air conditioner according to an embodiment of the present invention;
fig. 13 is a flowchart of another air conditioner cooling control method according to an embodiment of the present invention.
Detailed Description
The air conditioner indoor unit, the air conditioner and the refrigeration control method thereof according to the embodiments of the present invention will be described in detail with reference to the accompanying drawings.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
An embodiment of the present invention provides an air conditioner indoor unit, and referring to fig. 1 to 7, an air conditioner indoor unit 1 includes: an indoor chassis 101, a first airflow blocking structure 102 and a second airflow blocking structure 103; the indoor chassis 101 has an air inlet and an air outlet; the first air flow partition structure 102 is arranged in the indoor machine case 101 to partition the area in the indoor machine case 101 into a plurality of groups of air channels which are not communicated with each other; the second airflow partition structure 103 is disposed In the air duct to partition the air duct into an air inlet air duct In and an air outlet air duct Out that are not communicated, two ends of the air inlet air duct In and the air outlet air duct Out are respectively communicated with a corresponding air inlet and an air outlet on the indoor machine case 101, and an indoor fan 104 and an indoor heat exchanger 105 are disposed In the air inlet air duct In and the air outlet air duct Out.
The air conditioner indoor unit provided by the embodiment of the invention can exchange heat for a unit to be heat exchanged, wherein the unit to be heat exchanged can include a plurality of devices to be heat exchanged, and the plurality of devices to be heat exchanged can be installed in a cabinet, as shown in fig. 2, the unit to be heat exchanged 3 includes two devices to be heat exchanged, which are a device to be heat exchanged 301 and a device to be heat exchanged 302, respectively, as shown in fig. 5, the unit to be heat exchanged 3 includes three devices to be heat exchanged, which are a device to be heat exchanged 301, a device to be heat exchanged 302 and a device to be heat exchanged 303, respectively.
Because the air conditioner indoor unit 1 is provided with the air channels which are not communicated with each other, and any one air channel, the indoor heat exchanger and the indoor fan can be adopted to exchange heat for one device to be heated, the air conditioner indoor unit can be adopted to simultaneously exchange heat for one device to be heated and also can exchange heat for one device. Therefore, the equipment to be heat-exchanged with higher local temperature can be refrigerated in a targeted manner, and the phenomenon of energy waste caused by the opening of the whole air conditioner indoor unit is avoided.
In the air conditioner indoor unit provided by the invention, the second airflow partition structure 103 is arranged In the air duct to partition the air duct into the air inlet duct In and the air outlet duct Out which are not communicated, during specific heat exchange, the air inlet duct In is communicated with the air inlet of the equipment to be heated, and the air outlet duct Out is communicated with the air outlet of the equipment to be heated, so that the airflow led Out of the equipment to be heated is separated from the airflow entering the equipment to be heated, the phenomenon of airflow disorder caused by mixing of hot airflow and cold airflow is prevented, and the heat exchange effect is reduced. Therefore, the heat exchange effect of each device to be heat-exchanged can be improved and the heat exchange efficiency can be improved by arranging the air inlet duct In and the air outlet duct Out which are separated. As shown In fig. 2, the device to be heated includes a device to be heated 301 and a device to be heated 302, so that there are two air inlet channels In and two air outlet channels Out, where one air inlet channel In is communicated with an air inlet of the device to be heated 301, the other air inlet channel In is communicated with an air inlet of the device to be heated 302, correspondingly, one air outlet channel Out is communicated with an air outlet of the device to be heated 301, and the other air outlet channel Out is communicated with an air outlet of the device to be heated 302, and the air channels that do not interfere with each other respectively ensure the heat exchange effect of the device to be heated 301 and the device to be heated 302.
An indoor heat exchanger 105 and an indoor fan 104 are respectively installed In the air inlet duct In and the air outlet duct Out, so that the heat exchange of the air flow In the air inlet duct In and the air flow In the air outlet duct Out can be respectively carried Out through the indoor heat exchanger 105 and the indoor fan 104.
In some embodiments, the first and second gas flow interruption structures 102, 103 may or may not be identical in structure. In order to simplify the structure of the whole air conditioner indoor unit, each of the first air flow blocking structure 102 and the second air flow blocking structure 103 includes a rigid isolation structure (1021, 1031) and a flexible isolation structure (1022, 1032) which is abutted with the rigid isolation structure (1021, 1031) and can extend to the outside of the indoor cabinet 101, or only includes a flexible isolation structure (1022, 1032) which can extend to the outside of the indoor cabinet 101. Illustratively, the rigid isolation structure (1021, 1031) may be a metal isolation plate or a plastic isolation plate; for example, the flexible isolation structures (1022, 1032) may be made of windproof canvas or flexible cloth made of fiberglass-coated silica gel.
In order to completely isolate the air inlet and the air outlet of the device to be heat-exchanged, so as to be respectively butted with the corresponding air inlet duct In and the air outlet duct Out, referring to fig. 2 and 5, the air conditioner indoor unit 1 further includes: and the second suction piece 106 is arranged on the flexible isolation structure of the second air flow isolation structure 103, and the second suction piece 106 is used for being sucked with the equipment to be heated so as to isolate the air inlet and the air outlet of the equipment to be heated by utilizing the flexible isolation structure. The technical effect achieved by adopting the flexible isolation structure is as follows: on one hand, the flexible isolation structure is convenient to be stretched to the equipment to be heat-exchanged, the flexible isolation structure can be stretched or compressed according to the distance between the cabinet, the equipment to be heat-exchanged and the indoor unit of the air conditioner to realize the optimal connection effect, and the flexible isolation structure is connected with the equipment to be heat-exchanged in an attraction manner through the second attraction part 106; on the other hand, in practice, the distance between the air inlet and the air outlet of each device to be heat-exchanged is not a fixed value, and the suction position of the second suction and combination member 106 can be adjusted according to the devices to be heat-exchanged with different specifications by adopting the flexibility of the flexible isolation structure, so that the universality of the whole air-conditioning indoor unit is improved.
The second suction assembly 106 is adopted, so that the indoor unit of the air conditioner can be conveniently connected with the equipment to be heated, and the connection and the disassembly are convenient; illustratively, the second engaging member 106 is a magnetic attraction, an electromagnetic chuck, or other engaging structure.
When heat exchange needs to be performed on a plurality of devices to be heat exchanged, and an air inlet of one device to be heat exchanged in two adjacent devices to be heat exchanged is close to an air outlet of the other device to be heat exchanged, in order to avoid an air flow disorder phenomenon, referring to fig. 2 and 5, the indoor unit 1 of the air conditioner further includes: the first absorbing element 107, the first absorbing element 107 is installed on the flexible isolating structure of the first airflow isolating structure 102, and the first absorbing element 107 is used for connecting with the heat exchanger unit to be exchanged, so as to isolate the air inlet and the air outlet of two adjacent heat exchange equipment in the heat exchanger unit to be exchanged. As shown in fig. 5, the air outlet of the device to be heated 302 is adjacent to the air inlet of the device to be heated 301, the air inlet of the device to be heated 302 is adjacent to the air outlet of the device to be heated 303, the first absorbing member 107 is attracted between the device to be heated 301 and the device to be heated 302, and the other first absorbing member 107 is attracted between the device to be heated 302 and the device to be heated 303, so that the air outlet of the device to be heated 302 is isolated from the air inlet of the device to be heated 301, and the air inlet of the device to be heated 302 is isolated from the air outlet of the device to be heated 303, thereby preventing air flow from mixing, and improving the heat exchange effect of the two adjacent devices to be heated.
For example, the first engaging member 107 may be the same as or different from the second engaging member 106, and the first engaging member 107 may be selected from a magnetic attraction, an electromagnetic chuck, or other engaging structure.
In order to increase the flow speed of the air flow in the air inlet duct and the air outlet duct, the indoor heat exchanger 105 and the indoor fan 104 are arranged oppositely; in order to further improve the heat exchange efficiency, referring to fig. 2 and 5, the indoor heat exchanger 105 In the air inlet duct In is installed near the air inlet of the indoor machine case 101, and the indoor fan 104 In the air inlet duct In deviates from the air inlet of the indoor machine case 101; an indoor fan 104 in the air outlet duct Out is installed near the air outlet of the indoor machine case 101. In the air inlet duct, the indoor fan 104 can be used for quickly blowing the air flow for heat exchange of the indoor heat exchanger to the equipment to be heated, and in the air outlet duct, the indoor fan 104 can be used for quickly blowing the air flow exhausted by the equipment to be heated to the indoor heat exchanger.
In some embodiments, the indoor heat exchangers 105 in the inlet air ducts and the indoor heat exchangers 105 in the outlet air ducts of any one set of ducts are connected in series. Referring to fig. 4 and 7, in each set of gas flow circulation, the hot gas flow is pre-cooled by one indoor heat exchanger, then flows through another indoor heat exchanger again to be cooled, and then becomes the cold gas flow to be sent to the equipment to be heated again.
Referring to fig. 1, the indoor cabinet 101 includes: the door 1011 is rotatably coupled to the door frame 1012, and the door 1011 is rotatably coupled to the door frame 1012, for example, the door 1011 is coupled to the door frame 1012 via a shaft 1013. Specifically, the indoor fan 104 and the indoor heat exchanger 105 are both installed in the door frame 1011, the rigid isolation structure is fixed in the door frame 1011, the rigid isolation structure can be arranged along the height direction of the door frame 1011 to form a structure which can also be arranged along the width direction of the door frame 1011, the arrangement direction of the rigid isolation structure is not limited, and the arrangement method of the rigid isolation structure can be determined according to the specific arrangement position of the equipment to be heated in the actual component to be heated. One end of the flexible isolation structure is fixed within the door frame 1012 and the other end is suspended. In order to ensure the sealing performance of the rigid isolation structure and the flexible isolation structure after butt joint, a brush strip or a sealing strip with other structures is arranged between the rigid isolation structure and the flexible isolation structure.
In order to ensure that the air inlet and the air outlet of the air inlet duct or the air outlet duct are uniform, a plurality of indoor fans 104 are arranged in the air inlet duct and/or the air outlet duct, and referring to fig. 3 and 6, three indoor fans are respectively arranged in the air inlet duct and the air outlet duct in parallel.
In order to realize the automatic control of the indoor air conditioning unit, the air conditioning indoor unit 1 further includes: an indoor controller 119, temperature sensors 108 arranged in an air inlet duct and an air outlet duct, an indoor heat exchanger outlet temperature sensor 113 and an indoor heat exchanger outlet pressure sensor 114 arranged on an outlet pipeline of the indoor heat exchanger 105, a refrigerant inlet pressure sensor 115 and a refrigerant inlet temperature sensor 116; the temperature sensor 108, the indoor heat exchanger outlet temperature sensor 113, the indoor heat exchanger outlet pressure sensor 114, the refrigerant inlet pressure sensor 115, and the refrigerant inlet temperature sensor 116 are respectively connected to an input end of an indoor controller 119, and an output end of the indoor controller 119 is connected to a display screen 118. The indoor controller 119 and the display screen 118 are installed on the front surface of the indoor chassis 101, and are flush with the installation surface of the indoor fan 104.
In some embodiments, a third airflow isolating structure 110 is installed on a side of the door frame 1012 away from the door frame 1011, the third airflow isolating structure 110 is disposed on the door frame 1012 and is used for connecting with the heat exchanger unit to communicate the heat exchanger unit with the indoor unit box, and a third suction element 111 is installed on the third airflow isolating structure 110. Preferably, the third isolation structure 110 is a flexible isolation structure, for example, a flexible cloth may be used. The third engaging member 111 may be a magnetic device, an electromagnetic chuck or other engaging structure. The third suction and combination piece 111 can be adopted to suck the whole air-conditioning indoor unit on the component to be heated.
In order to move the air conditioning indoor unit and relocate the air conditioning indoor unit according to actual needs, referring to fig. 1, a first moving mechanism 109 for driving the indoor unit 101 to move is installed at the bottom of the indoor unit 101, for example, the first moving mechanism 109 may be a caster, and preferably, the caster has a locking function.
The specific use process of the air conditioner indoor unit provided by the invention is as follows: the first moving mechanism 109 is adopted to move the whole air conditioner indoor unit to the side of the heat exchanger unit to be cooled; the third suction and closing part 111 is sucked on the cabinet of the heat exchanger unit to be replaced, the indoor cabinet is communicated with the heat exchanger unit to be replaced through the flexible third airflow partition structure 110, namely a flexible air duct is formed between the indoor cabinet and the cabinet; then the first absorbing part 107 is absorbed on the unit to be heat exchanged so as to isolate two adjacent devices to be heat exchanged, and a flexible air duct is formed between the two adjacent devices to be heat exchanged; then the second suction and closing part 106 is sucked with the equipment to be heat-exchanged so as to separate the air outlet and the air inlet of the equipment to be heat-exchanged, and a flexible air duct is formed at the air inlet and the air outlet respectively; and opening the indoor unit of the air conditioner to refrigerate the equipment to be heat exchanged in a pair. By arranging the flexible air duct, the suction piece and the first moving mechanism, one machine cabinet at any position in the machine room can be butted, so that local one-to-one heat exchange of the machine room is realized, and the phenomenon of high local temperature is avoided; meanwhile, the flexible air duct is separated into an air inlet duct and an air outlet duct, during specific heat exchange, the air inlet duct is communicated with an air inlet of the equipment to be heated, and the air outlet duct is communicated with an air outlet of the equipment to be heated, so that cold air flow entering the equipment to be heated can be separated from hot air flow flowing out of the equipment to be heated, air flow disorder is avoided, the equipment to be heated is subjected to one-to-one heat exchange, and the refrigerating effect of each equipment to be heated is effectively improved.
In another aspect, an embodiment of the present invention further provides an air conditioner, referring to fig. 11, including: an outdoor unit 2 and an indoor unit communicating with the outdoor unit 2, and the indoor unit is the air-conditioning indoor unit 1 described above. Referring to fig. 8, 9 and 10, the outdoor unit 2 includes: the outdoor unit comprises an outdoor case 201, an outdoor fan 205 mounted on the outdoor case 201, a compressor 202, an outdoor heat exchanger 204 and a refrigerant booster pump 206 mounted in the outdoor case 201, wherein the compressor 202, the outdoor heat exchanger 204 and the refrigerant booster pump 206 are sequentially communicated.
In an example, the outdoor heat exchanger 204 has a U-shaped structure, the compressor 202 and the refrigerant booster pump 206 can be installed in a space surrounded by the U-shaped structure, the outdoor heat exchanger 204 with the U-shaped structure can increase a heat exchange area, improve a heat exchange effect, and simultaneously save space occupied by the refrigerant booster pump 206 and the compressor 202.
In some embodiments, the compressor 202 is an inverter compressor, and the refrigerant booster pump 206 is an inverter refrigerant booster pump, and the outdoor unit 2 further includes: a compressor frequency converter connected with the variable-frequency compressor and a pump frequency converter connected with the variable-frequency refrigerant booster pump. The compressor frequency converter and the pump frequency converter can also be arranged in the space surrounded by the U-shaped structure; the outdoor fan 205 has a stepless speed regulation function.
Illustratively, the outdoor unit 2 further includes: the outdoor heat exchanger pressure sensor 208 is arranged on a pipeline communicated with the refrigerant booster pump 206 of the outdoor heat exchanger 204, and the outdoor heat exchanger pressure sensor 208 is connected with the input end of the outdoor controller 209.
The pipes connected between the air conditioning indoor unit 1 and the outdoor unit 2 are connected by a quick coupling 210.
When the air conditioning indoor unit 1 has the first moving mechanism 109, in order to match the movement of the position of the air conditioning indoor unit 1, referring to fig. 8, the second moving mechanism 211 for driving the outdoor unit 201 to move is installed at the bottom of the outdoor unit 201, wherein the outdoor heat exchanger 204 is communicated with the indoor heat exchanger 105 through a flexible connecting pipe, and the flexible connecting pipe includes a flexible connecting liquid pipe 4 and a flexible connecting air pipe 5. Meanwhile, the outdoor heat exchanger 204 and the indoor heat exchanger 105 are connected by a signal line 6. For example, the second moving mechanism 211 may be a caster, and preferably, the caster has a locking function.
The air conditioner further includes: and the throttling device 112 is arranged on a pipeline for communicating the outdoor heat exchanger 204 with the indoor heat exchanger 105. This facilitates control of the different indoor heat exchangers 105. Illustratively, the throttle device 112 is an electronic expansion valve.
It should be noted that: any air duct in the air-conditioning indoor unit 1, the indoor fan and the indoor heat exchanger which are arranged in the air inlet duct, and the indoor fan and the indoor heat exchanger which are arranged in the air outlet duct form a sub-indoor unit, so that the air-conditioning indoor unit 1 is composed of a plurality of sub-indoor units which are connected in parallel. The sub-indoor units described below are the sub-indoor units described herein.
Referring to fig. 4 and 6, the outdoor heat exchanger 204 is communicated with the indoor heat exchanger in the air inlet duct in the sub indoor unit, and then the indoor heat exchanger in the air inlet duct is communicated with the indoor heat exchanger in the air outlet duct, so that the purpose of design is as follows: the flow direction of the refrigerant is as follows: firstly, the air is subjected to heat exchange through an indoor heat exchanger in an air inlet duct and then enters an indoor heat exchanger in an air outlet duct for heat exchange; the flow direction of the airflow is as follows: the air flow subjected to heat exchange firstly passes through the indoor heat exchanger in the air outlet duct and then enters the air inlet duct, so that the flow direction of the refrigerant and the flow direction of the air flow form counter flow, and the heat exchange effect is improved.
An embodiment of the present invention further provides a refrigeration control method of an air conditioner, and referring to fig. 12, the refrigeration control method includes the following steps:
s101: starting the air conditioner: and starting the air conditioner, and controlling at least part of all the indoor fans to initially operate at a fixed rotating speed F0. That is, after the air conditioner is started, all indoor fans may be operated, or a part of the indoor fans may be operated, and in an initial stage of operation, the indoor fans are operated at a fixed rotation speed F0, and a specific value of the fixed rotation speed F0 is determined according to an actual heat exchange requirement, for example, if a heat exchange amount is large, a fixed rotation speed F0 value is large, and if the heat exchange amount is small, a fixed rotation speed F0 value is small, where the specific value of the fixed rotation speed F0 is not limited.
The benefits of the initial operation of the indoor fan at a fixed speed F0 are: in the initial starting stage of the air conditioner, because the actual heat exchange requirement is not determined, the air conditioner is fixed to be in the middle-gear rotating speed for initial operation, and is adjusted to the target rotating speed after the heat exchange requirement is detected and calculated clearly, so that the air conditioner can respond quickly no matter the air conditioner is adjusted to the high rotating speed or the low rotating speed. Furthermore, when the air conditioner is used, the fixed rotating speed can be adjusted to other values according to actual conditions, and the fixed rotating speed is larger or smaller, so that the indoor fan can reach the actual required rotating speed in a short time after being started, and the optimum fixed rotating speed is achieved.
S102: determining a refrigerating sub-indoor unit: after the air conditioner is started, determining a sub indoor unit needing to start a refrigeration mode (the sub indoor unit is specifically limited) according to a refrigeration preset condition, and enabling the sub indoor unit needing to start the refrigeration mode to be a refrigeration sub indoor unit; and then starting the compressor, the refrigerant booster pump and the corresponding indoor heat exchangers in the refrigerating sub indoor unit, wherein the compressor initially operates at a fixed rotation speed Sc and the refrigerant booster pump initially operates at a fixed rotation speed Sp.
The preset refrigeration condition has two conditions, and when at least one condition is met, the refrigerating sub-indoor unit can be determined to be a refrigerating sub-indoor unit; specifically, the first preset refrigeration condition is that the supply air refrigeration requirement is determined: collecting an air supply temperature value To in an air inlet duct in the sub-indoor unit, comparing the air supply temperature value To with an air supply temperature preset value Tos, and judging that air supply refrigeration needs exist if the To is higher than the Tos and the difference value is out of the range of an air supply temperature preset difference value delta To; the second preset refrigeration condition is that the air outlet refrigeration requirement is determined: and collecting an air outlet temperature value Ti in the air outlet duct in the sub-indoor unit, comparing the air outlet temperature value Ti with an air outlet temperature preset value Tis, and judging that the air outlet refrigeration requirement exists if the Ti is higher than the Tis and the difference value is out of the range of an air outlet temperature preset difference value delta Ti. If one or two of the two preset refrigeration conditions are met, the sub indoor unit is a refrigeration sub indoor unit. Adopt To be higher than Tos and the difference is outside air supply temperature preset difference value delta To scope, and Ti is higher than Tis and the difference is outside air-out temperature preset difference value delta Ti scope and judge the refrigeration demand, this means that actual temperature is greater than the preset temperature and can not regard immediately as there is the refrigeration demand, but only think there is the refrigeration demand after reaching certain preset difference, can not have the refrigeration demand again for a moment when actual temperature fluctuates in the temperature value minizone of settlement like this, cause control unstable.
Specifically, the air supply temperature value To and the air outlet temperature value Ti are acquired by using temperature sensors 108 installed in the air inlet duct and the air outlet duct.
After the refrigerating unit indoor unit is determined, the compressor initially operates at a fixed rotating speed Sc and the refrigerant booster pump initially operates at a fixed rotating speed Sp, and the actual heat dissipation requirement is not determined when the air conditioner is just started, so that the compressor and the refrigerant booster pump initially operate at a proper rotating speed, the refrigerating capacity and the heat productivity start to be matched in the initial operation time period, and the actual heat dissipation requirement calculation is carried out by detecting each temperature value, so that the rotating speed can be dynamically adjusted.
After the air conditioner is started and the operation is performed for 30 seconds to 5 minutes, the indoor fan rotating speed needs to be controlled, wherein S103: controlling the rotating speed of the indoor fan: determining a first rotating speed value of an indoor fan according to a PID control method by taking an outlet air temperature preset value Tis in a refrigerating sub-indoor unit as a target; collecting the air supply temperature value To in the air inlet duct and the air outlet temperature value Ti in the air outlet duct in the refrigerating sub-indoor unit, and calculating the air supply temperature difference T△Determining a second rotating speed value of the indoor fan according To a PID control method by taking a set value T deltas of the temperature difference of the supplied air as a target; and determining the maximum of the first rotating speed value and the second rotating speed value of the indoor fan as a target rotating speed value of the indoor fan, and controlling the rotating speed of the indoor fan according to the target rotating speed value of the indoor fan. The air supply and exhaust temperature difference is taken as a control target to accurately match the heat productivity change of the equipment to be heated, and the return air temperature is measured and calculated in real timeThe temperature of the return air is prevented from being too high due to unexpected factors, and the reliable operation of the equipment is prevented from being influenced. After the operation is carried out for a preset time, which is generally 5-10 minutes, the rotating speed of the refrigerant booster pump, the rotating speed of the compressor and the opening degree of the throttling device corresponding to the refrigerating sub-indoor unit are required to be controlled. The following detailed description of the control of the various components:
s1041: control refrigerant booster pump rotational speed, control refrigerant booster pump rotational speed includes: collecting a refrigerant inlet pressure Pc of a refrigerant booster pump and a refrigerant inlet pressure Pi of a refrigerating sub-indoor unit, calculating a refrigerant pressure difference P delta-Pc-Pi, determining a first rotation speed value of the refrigerant booster pump according to a PID control method by taking a refrigerant pressure difference preset value P delta s as a target, for example, obtaining a refrigerant pressure difference P at a time k△kWhen it is, P is△kSubstituting the first rotating speed value u (k) at the moment k into the following PID algorithm formula to obtain a first rotating speed value u (k) at the moment k,
u (k) is the first rotation speed value at the moment k, P is a proportionality constant, TiAs an integration constant, TdA differential constant, T being the sampling period, PΔ(k-1)The pressure difference value of the refrigerant at the k-1 moment; collecting the refrigerant inlet temperature Tli of the refrigerating sub-indoor unit, calculating the refrigerant inlet saturation temperature Tl through the refrigerant inlet pressure Pi, calculating the refrigerant inlet supercooling degree Tu which is Tl-Tli, and determining a second rotating speed value of the refrigerant booster pump according to a PID control method by taking the refrigerant supercooling degree set value Tuc as a target; and determining the maximum one of the first rotating speed value and the second rotating speed value as a target rotating speed value, and controlling the rotating speed of the refrigerant booster pump by using the target rotating speed value. The rotating speed of the refrigerant booster pump is controlled according to the method for controlling the refrigerant pressure difference and the refrigerant supercooling degree, the connecting pipeline with any length is matched between the indoor heat exchanger and the outdoor heat exchanger, and the indoor heat exchanger still has the liquid refrigerant with the target supercooling degree and sufficient flow.
S1042: controlling the rotating speed of the compressor: and collecting the air supply temperature value in the air inlet duct in the refrigeration sub-indoor unit, and controlling the rotating speed of the compressor according to a PID control method by taking the air supply temperature preset value in the refrigeration sub-indoor unit as a target. Therefore, the air supply temperature can be controlled at the preset value no matter how the air quantity and the return air temperature change. The throttling device in the sub-indoor unit which is not cooled is in a closed state.
S1043: the control of the opening degree of the throttling device in the refrigeration sub-indoor unit is as follows: and collecting the superheat degree of a refrigerant outlet of an indoor heat exchanger in the refrigeration sub indoor unit, and determining the opening degree of the throttling device by the throttling device according to a PID control method by taking a refrigerant outlet superheat degree set value as a target.
And when the collected air supply temperature values in all the air supply channels are lower than the air supply temperature preset value and the difference value is greater than the preset value, the compressor and the refrigerant booster pump are closed, but all the indoor fans are still controlled by the indoor fan rotating speed control method.
For example, referring to fig. 13, a specific cooling process of an air conditioner is described as an example, and the specific steps may include:
s201: turning on the power key of the air conditioner;
s202: all indoor fans in the air conditioner indoor unit are initially operated and initially operated at a fixed rotation speed F0. Blowing air flows at an inlet and an outlet of equipment to be heat-exchanged by adopting an indoor fan;
s203: collecting the air supply temperature and the air outlet temperature of each sub-indoor unit; the air supply temperature of the sub indoor unit is obtained by collecting the temperature in the air inlet duct, and the air outlet temperature of the sub indoor unit is obtained by collecting the temperature in the air outlet duct;
s204: determining whether the refrigeration sub-indoor unit is a refrigeration sub-indoor unit; determining whether the air supply temperature and the air outlet temperature are the refrigeration sub indoor unit by comparing the obtained air supply temperature and air outlet temperature with the preset refrigeration condition, wherein the specific process of determining the refrigeration sub indoor unit is described in detail and is not described again; when it is determined that there is a refrigeration sub-indoor unit group, performing step S206, and when it is determined that there is no refrigeration sub-indoor unit group, performing step S205;
s205: controlling the rotating speed of an indoor fan; the method for controlling the rotating speed of the indoor fan in the refrigeration sub indoor unit has been described above, and is not described herein again; step S205 starts operation after step S204;
s206: starting a compressor and a refrigerant booster pump; the compressor initially operates at a fixed rotation speed Sc and a fixed rotation speed Sp, and after the compressor operates for 5 minutes, the rotation speeds of the compressor, the refrigerant booster pump and an indoor fan in the refrigeration sub-indoor unit are respectively controlled, and the opening degree of a throttling device for controlling the refrigeration indoor unit is adjusted;
s2071: controlling the rotating speed of the refrigerant booster pump; the method for controlling the rotational speed of the refrigerant booster pump has already been described above, and will not be described herein again.
S2072: controlling the rotating speed of the compressor; the compressor speed control method has already been described above and will not be described herein.
S2073: controlling the opening of the throttling device; the above description has been made on the throttle opening control method for controlling the refrigeration sub indoor unit, and the details are not repeated herein.
It should be noted that: the above steps S2071, S2072 and S2073 are not sequential and may be performed simultaneously.
In the description herein, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (15)
1. A refrigeration control method of an air conditioner, the air conditioner comprising:
an outdoor unit, the outdoor unit comprising: the outdoor heat exchanger comprises an outdoor case, and an outdoor fan, a compressor, an outdoor heat exchanger and a refrigerant booster pump which are arranged in the outdoor case, wherein the compressor, the outdoor heat exchanger and the refrigerant booster pump are sequentially communicated;
an indoor unit group including: an indoor chassis having an air inlet and an air outlet; the first air flow partition structure is arranged in the indoor machine case so as to partition the area in the indoor machine case into a plurality of groups of air channels which are not communicated with each other;
the second air flow partition structure is arranged in the air duct so as to partition the air duct into an air inlet air duct and an air outlet air duct which are not communicated, two ends of the air inlet air duct and the air outlet air duct are respectively communicated with the corresponding air inlet and the corresponding air outlet on the indoor machine case, and an indoor fan and an indoor heat exchanger are arranged in the air inlet air duct and the air outlet air duct; the outdoor heat exchanger is communicated with the indoor heat exchanger, and a throttling device is arranged on a pipeline communicated with the indoor heat exchanger; any one of the air duct, the indoor fan and the indoor heat exchanger which are arranged in the air inlet duct, and the indoor fan and the indoor heat exchanger which are arranged in the air outlet duct in the air conditioner indoor unit form a sub-indoor unit; the refrigeration control method is characterized by comprising the following steps:
starting the air conditioner: starting the air conditioner, and controlling at least part of indoor fans in all the indoor fans to initially operate at a fixed rotating speed F0;
determining a refrigerating sub-indoor unit: determining a sub indoor unit needing to start a refrigeration mode according to a refrigeration preset condition, and enabling the sub indoor unit needing to start the refrigeration mode to be a refrigeration sub indoor unit; starting the compressor, the refrigerant booster pump and the corresponding throttling devices in the refrigerating sub indoor unit, wherein the compressor initially operates at a fixed rotating speed Sc and the refrigerant booster pump initially operates at a fixed rotating speed Sp;
controlling the rotating speed of the refrigerant booster pump: collecting the refrigerant inlet pressure Pc of the refrigerant booster pump and the refrigerant inlet pressure Pi of the refrigerating sub-indoor unit, and calculating the refrigerant pressure difference P△Pc-Pi, preset value P of pressure difference of refrigerant△s is used as a target, and a first rotating speed value of the refrigerant booster pump is determined according to a PID control method; collecting a refrigerant inlet temperature Tli of the refrigerating sub-indoor unit, calculating a refrigerant inlet saturation temperature Tl through the refrigerant inlet pressure Pi, calculating a refrigerant inlet supercooling degree Tu-Tli, and determining a second rotating speed value of the refrigerant booster pump according to a PID control method by taking a refrigerant supercooling degree set value Tuc as a target; and determining the maximum one of the first rotating speed value and the second rotating speed value as a target rotating speed value, and controlling the rotating speed of the refrigerant booster pump by using the target rotating speed value.
2. A refrigeration control method of an air conditioner according to claim 1, wherein each of the first and second air flow blocking structures includes a flexible isolation structure that is extendable to an exterior of the indoor cabinet.
3. A refrigeration control method for an air conditioner according to claim 2, wherein said indoor unit of the air conditioner further comprises: the first absorbing piece is arranged on the flexible isolation structure of the first airflow isolation structure and is used for being connected with the heat exchanger unit to be exchanged so as to isolate two adjacent heat exchange equipment in the heat exchanger unit to be exchanged.
4. A refrigeration control method for an air conditioner according to claim 2, wherein said indoor unit of the air conditioner further comprises: and the second suction piece is arranged on the flexible isolation structure of the second airflow partition structure and is used for being connected with the equipment to be heated so as to isolate the air inlet and the air outlet of the equipment to be heated.
5. A refrigeration control method of an air conditioner according to claim 1, wherein a first moving mechanism for moving the indoor unit case is installed at a bottom of the indoor unit case.
6. A refrigeration control method for an air conditioner according to claim 1, wherein the indoor heat exchanger in the air inlet duct and the indoor heat exchanger in the air outlet duct in any one of the air ducts are connected in series.
7. A refrigeration control method for an air conditioner according to claim 1, wherein an indoor heat exchanger in the air intake duct is installed near the air intake of the indoor unit case, and an indoor fan in the air outlet duct is installed near the air outlet of the indoor unit case.
8. A cooling control method of an air conditioner according to claim 1, wherein the indoor cabinet includes a door frame and a door frame rotatably connected.
9. A refrigeration control method for an air conditioner according to claim 1, wherein said indoor unit of the air conditioner further comprises: and the third airflow partition structure is arranged at the outer edge of the indoor machine case and is used for being connected with the heat exchanger unit to be exchanged so as to communicate the heat exchanger unit to be exchanged with the indoor machine case.
10. A refrigeration control method for an air conditioner according to claim 9, wherein the third air flow partition structure includes a flexible isolation structure, and a third engaging member for connecting with the heat exchanger unit is installed on the flexible isolation structure.
11. A refrigeration control method for an air conditioner according to claim 1, wherein said outdoor heat exchanger is communicated with an indoor heat exchanger of said sub indoor unit located in said intake air duct.
12. A refrigeration control method of an air conditioner according to claim 1, wherein a second moving mechanism for moving the outdoor cabinet is installed at a bottom of the outdoor cabinet, and wherein the outdoor heat exchanger and the indoor heat exchanger are communicated through a flexible connecting pipe.
13. A refrigeration control method of an air conditioner according to claim 1, further comprising, after said determining the set of refrigeration sub-rooms:
controlling the rotating speed of the compressor: and collecting the air supply temperature value in the air inlet duct in the refrigeration sub-indoor unit, and controlling the rotating speed of the compressor according to a PID control method by taking the air supply temperature preset value as a target.
14. A refrigeration control method of an air conditioner according to claim 1, further comprising, after said starting the air conditioner:
controlling the rotating speed of the indoor fan: collecting an air outlet temperature value Ti in the air outlet duct in the sub-indoor unit, and determining a first rotating speed value of the indoor fan according to a PID control method by taking an air outlet temperature preset value Tis as a target; collecting the air supply temperature value To in the air inlet duct and the air outlet temperature value Ti in the air outlet duct in the sub-indoor unit, and calculating the air supply temperature difference T△Ti-To send out the set value of air temperature difference T△s is a target, and a second rotating speed value of the indoor fan is determined according to a PID control method; and determining the maximum of the first rotating speed value and the second rotating speed value of the indoor fan as a target rotating speed value of the indoor fan, and controlling the rotating speed of the indoor fan according to the target rotating speed value of the indoor fan.
15. A refrigeration control method of an air conditioner according to claim 1, wherein said determining the refrigerant sub-indoor unit includes:
determining the air supply refrigeration requirement: collecting an air supply temperature value To in the air inlet duct in the sub-indoor unit, comparing the air supply temperature value To with an air supply temperature preset value Tos, and judging that air supply refrigeration requirements exist if the To is higher than the Tos and the difference value is out of the range of an air supply temperature preset difference value delta To;
determining the air outlet refrigeration requirement: collecting an air outlet temperature value Ti in the air outlet duct in the sub-indoor unit, comparing the air outlet temperature value Ti with an air outlet temperature preset value Tis, and judging that air outlet refrigeration requirements exist if the Ti is higher than the Tis and the difference value is out of the range of an air outlet temperature preset difference value delta Ti;
wherein, the two refrigeration demands at least meet one, the sub indoor unit is determined as the refrigeration sub indoor unit.
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| CN113983667A (en) * | 2021-10-14 | 2022-01-28 | 珠海格力电器股份有限公司 | Heat exchange control system and method of evaporator and air conditioner |
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| JP3584276B2 (en) * | 2000-06-30 | 2004-11-04 | 株式会社日立製作所 | Air conditioning system |
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| CN101516166B (en) * | 2008-02-22 | 2010-12-08 | 华为技术有限公司 | Horizontal insertion frame and communication cabinet |
| CN104251581B (en) * | 2013-06-28 | 2017-02-22 | 艾默生网络能源有限公司 | Pump start control method, pump start control device, pump start control system and refrigerating system |
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| CN106973542A (en) * | 2016-01-14 | 2017-07-21 | 中兴通讯股份有限公司 | A kind of wind-guiding cabinet and communication system |
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