CN111006306B - Multi-split air conditioner - Google Patents
Multi-split air conditioner Download PDFInfo
- Publication number
- CN111006306B CN111006306B CN201911156264.5A CN201911156264A CN111006306B CN 111006306 B CN111006306 B CN 111006306B CN 201911156264 A CN201911156264 A CN 201911156264A CN 111006306 B CN111006306 B CN 111006306B
- Authority
- CN
- China
- Prior art keywords
- outdoor
- indoor
- temperature sensor
- value
- controller
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0003—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station characterised by a split arrangement, wherein parts of the air-conditioning system, e.g. evaporator and condenser, are in separately located units
-
- 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
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/56—Remote control
-
- 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
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
-
- 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
-
- 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
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
-
- 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 a multi-split air conditioner, which comprises N indoor units, wherein each indoor unit is provided with a third temperature sensor; the outdoor unit is communicated with the N indoor units through a communication line; comprises the following steps: the outdoor liquid pipe assembly comprises N outdoor liquid pipes, each outdoor liquid pipe is provided with an outdoor throttling component and a first temperature sensor in advance, and any outdoor liquid pipe in the outdoor liquid pipes can be connected to any indoor liquid pipe of any indoor unit; each outdoor air pipe is provided with a second temperature sensor, and any outdoor air pipe in the outdoor air pipes can be connected to any indoor air pipe of any indoor machine; the outdoor controller is communicated with the first temperature sensor, the second temperature sensor, the indoor controller and the outdoor throttling component.
Description
Technical Field
The invention belongs to the field of air conditioning equipment, and particularly relates to a multi-split air conditioner.
Background
The existing multi-split air conditioner comprises an outdoor unit and a plurality of indoor units, when the outdoor unit and the indoor units are connected, each indoor unit is correspondingly connected with the indoor unit through a communication line, meanwhile, an indoor liquid pipe and a liquid pipe of the outdoor unit are also required to be in a one-to-one connection mode, namely, the one-to-one corresponding relation between the communication lines and copper pipes is required to be ensured when the multi-split air conditioner normally operates, and otherwise, the multi-split air conditioner abnormally operates. That is, the outdoor throttle unit valve No. 1 is connected with the indoor unit No. 1, and it is necessary to ensure that the communication line No. 1 is connected with the indoor unit No. 1, and so on for the other indoor units. If the 2# communication line is connected with the 1# indoor unit, when the 1# indoor unit is started, the outdoor unit can act on the No. 2 outdoor throttling component, and the No. 1 outdoor throttling component is correctly acted, so that the system is abnormal.
The above information disclosed in this background section is only for enhancement of understanding of the background of the application and therefore it may comprise prior art that does not constitute known to a person of ordinary skill in the art.
Disclosure of Invention
The invention aims at the problem that a multi-split air conditioner needs to be provided with a plurality of communication lines in the prior art; the on-site piping needs to follow a one-to-one connection mode, the connection operation is convenient, the problem that the multi-split air conditioner cannot normally operate due to connection errors is easy to occur, a multi-split air conditioner is provided, addresses can be randomly distributed to indoor units, meanwhile, the outdoor unit can be automatically debugged during on-site installation and debugging to achieve matching of the corresponding indoor units and the temperature sensors, the purposes of real automatic wiring and free pipe connection are achieved, and convenience and reliability are achieved.
In order to realize the purpose of the invention, the invention is realized by adopting the following technical scheme:
a multi-split air conditioner comprises:
each indoor unit comprises an indoor air pipe and an indoor liquid pipe, and a third temperature sensor is arranged in each indoor unit;
the indoor controllers are provided with N, and are in communication connection with the corresponding third temperature sensors;
the outdoor unit is in communication connection with the N indoor units through a communication line,
the outdoor unit includes:
the outdoor liquid pipe assembly comprises N outdoor liquid pipes, each outdoor liquid pipe is provided with a first temperature sensor with an outdoor throttling part matched with the outdoor throttling part in advance, and any outdoor liquid pipe in the outdoor liquid pipes can be connected to an indoor liquid pipe of any indoor machine at will;
each outdoor air pipe is provided with a second temperature sensor, and any outdoor air pipe in the outdoor air pipes can be connected to any indoor air pipe of any indoor machine;
the outdoor controller is in communication connection with the N indoor controllers, the first temperature sensor, the second temperature sensor and the outdoor throttling component, and can be in communication with the indoor controllers and allocate addresses to the indoor units when the multi-split air conditioning system is powered on;
the outdoor controller is used for: before the matching connection, an outdoor throttling part is controlled to be closed or opened for a fixed opening, and a compressor and an outdoor fan of the outdoor unit operate;
the indoor controller is communicated with the indoor controller to control the N indoor units to operate, and the indoor controller is communicated with the indoor controller to control all the fans of the indoor units to stop operating after the indoor controller operates for a preset time period; controlling the compressor to run at a preset frequency, opening the No. i outdoor throttling component, and closing the other outdoor throttling components;
acquiring temperature values of a second temperature sensor and a third temperature sensor at intervals of preset time within a preset time period, respectively and separately accumulating and summing the temperature values, obtaining an indoor unit matched with the No. i outdoor throttling component according to a comparison result of an accumulated summation value of the temperature of the third temperature sensor and a first preset value, and obtaining a second temperature sensor matched with the No. i outdoor throttling component according to a comparison result of an accumulated summation value of the temperature of the second temperature sensor and a second preset value;
and sequentially controlling the other outdoor throttling parts to be opened, and carrying out matching connection of the indoor unit and the second temperature sensor on the other outdoor throttling parts.
Further, the first preset value comprises a first refrigeration preset value and a first heating preset value, the second preset value comprises a second refrigeration preset value and a second heating preset value, and the controller pre-judges the operation mode of the multi-split air-conditioning system before acquiring the values of the third temperature sensor and the second temperature sensor;
when the multi-split air conditioner is in a refrigerating mode, the controller judges the indoor unit matched with the ith outdoor throttling component according to whether the obtained accumulated sum value of the third temperature sensor is smaller than a set first refrigerating preset value or not;
judging a second temperature sensor matched with the ith outdoor throttling component according to whether the obtained accumulated sum value of the second temperature sensor is smaller than a set second refrigeration preset value or not;
when the multi-split air conditioner is in a heating mode, the controller judges the indoor unit matched with the ith outdoor throttling component according to whether the obtained accumulated sum value of the third temperature sensor is larger than a set first heating preset value or not;
and judging the second temperature sensor matched with the ith outdoor throttling component according to whether the obtained accumulated sum value of the second temperature sensor is larger than a set second heating preset value or not.
Further, when the controller acquires that the accumulated summation value of the third temperature sensors collected by the plurality of indoor units is smaller than the first refrigeration preset value,
or when the accumulated sum value of the second temperature sensors acquired by the outdoor air pipes is smaller than a second refrigeration preset value, indicating that the outdoor throttling component is in fault;
when the controller acquires that the accumulated summation value of the third temperature sensors collected by the indoor units is larger than the second heating preset value,
or when the accumulated sum value of the second temperature sensors acquired by the outdoor air pipes is smaller than a second heating preset value, the outdoor throttling component is indicated to be in fault.
Furthermore, the controller controls all the indoor units to operate, so that all the indoor units operate at a certain air volume.
Compared with the prior art, the invention has the advantages and positive effects that:
the invention provides a multi-split air conditioner which can realize automatic matching of indoor units and outdoor throttling components of the multi-split air conditioner, so that a plurality of indoor units of the multi-split air conditioner can be connected with an outdoor unit through a communication line, and meanwhile, when the outdoor unit is connected with the indoor units, outdoor liquid pipes and outdoor gas pipes of the outdoor unit can be connected with indoor gas pipes and indoor liquid pipes of the indoor units at will, free pipe connection can be realized, automatic matching connection can be realized after the free pipe connection is finished, the multi-split air conditioner is connected more conveniently and quickly, and the problem of abnormal multi-split air conditioner caused by wrong pipe connection can be avoided.
Other features and advantages of the present invention will become more apparent from the following detailed description of the invention when taken in conjunction with the accompanying drawings.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural view of a multi-split outdoor unit and an indoor unit connected by a communication line according to the present invention;
FIG. 2 is a schematic structural diagram of connection between an outdoor unit and a gas-liquid pipe of an indoor unit of the multi-split air conditioner;
fig. 3 is a schematic structural view of an outdoor unit of a multi-split air conditioner according to the present invention;
FIG. 4 is a flow chart of the multi-split air conditioning system for automatically matching indoor units and outdoor throttling components according to the present invention;
FIG. 5 is a flow chart of the multi-split air conditioning system of the present invention for automatically matching the second temperature sensor to the outdoor throttling element;
FIG. 6 is a flow chart of the multi-split heating mode of the present invention for automatically matching the indoor unit and the outdoor throttling element;
fig. 7 is a flow chart of the multi-connected machine heating mode of the invention for automatically matching the second temperature sensor and the outdoor throttling component.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and examples.
It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The invention provides an embodiment of a multi-split air conditioner, which comprises an outdoor unit 100 and N indoor units 200, wherein the N indoor units 200 are in communication connection with the outdoor unit 100 through one communication line 300, when the outdoor unit 100 and the N indoor units 200 are connected, the communication connection between all the indoor units 200 and the outdoor unit 100 can be realized only through one communication line 300, and thus, the problem that in the prior art, the connection of the indoor units 200 and the outdoor unit 100 through the single communication lines 300 is easy to be mistakenly connected can be effectively avoided.
The N indoor units 200 are connected to the outdoor unit 100 through liquid pipes and air pipes; specifically, the outdoor unit 100 includes an outdoor liquid pipe 110 assembly, an outdoor gas pipe 120 assembly, and an outdoor throttling assembly 130, where the outdoor liquid pipe 110 assembly includes N outdoor liquid pipes 110, and the outdoor gas pipe 120 assembly includes N outdoor gas pipes 120.
As shown in fig. 2, a thin outdoor liquid pipe 110 and a thick outdoor gas pipe 120 are provided, the outdoor throttling assembly includes N outdoor throttling parts 130, the N outdoor throttling parts 130 are respectively No. 1 outdoor throttling part 130 and No. 2 outdoor throttling part 130 … … N outdoor throttling part 130, each outdoor throttling part 130 is correspondingly connected with the base plate of the outdoor unit 100 through a wire, a first socket for plugging a first throttling component, a second socket for plugging a second outdoor throttling component 130 and an nth socket for plugging an nth throttling component are sequentially arranged on a base plate of the outdoor unit 100, the sockets and the outdoor throttling components 130 are in one-to-one correspondence connection relationship, that is, the number 1 outdoor throttling element 130 can only be correspondingly connected to the first plug interface of the base plate, and the number 2 outdoor throttling element 130 can only be connected to the second plug interface.
The N outdoor throttling parts 130 are sequentially and correspondingly arranged on the N outdoor liquid tubes 110, each outdoor liquid tube 110 is preset with a first temperature sensor 111 matched with the outdoor throttling part 130, the first temperature sensor 111 can detect the temperature of the outdoor liquid tube 110 on the outdoor side, and the first temperature sensor 111 and the outdoor throttling part 130 are connected to the same outdoor liquid tube 110, so that the outdoor throttling part 130 is not required to be matched with the first temperature sensor 111, each outdoor air tube 120 is provided with a second temperature sensor 121, and similarly, the second temperature sensors 121 are arranged on the corresponding outdoor air tubes 120 and are not required to be matched with the outdoor air tubes 120.
The second temperature sensor 121 may be configured to detect a temperature of the outdoor air pipe 120 on the outdoor unit 100 side, the plurality of second temperature sensors 121 are respectively the second temperature sensor 121 No. 1, the second temperature sensor 121 No. 2, and the like, any one of the plurality of outdoor liquid pipes 110 may be arbitrarily connected to an indoor liquid pipe of any one of the indoor units 200, any one of the plurality of outdoor air pipes 120 may be arbitrarily connected to an indoor air pipe of any one of the indoor units 200, and a third temperature sensor is disposed in the indoor unit 200.
The multi-split air conditioner can realize the random connection and matching between the outdoor liquid pipe 110 and the outdoor air pipe 120 and the indoor liquid pipe and the indoor air pipe of the indoor unit 200, realizes the free connection of the pipes, and effectively avoids the problem that the system is abnormal due to the fact that a plurality of indoor units 200 and outdoor units 100 are connected in one-to-many correspondence in the prior art and are easy to be connected in error.
The multi-split air conditioner in this embodiment further includes an outdoor controller, which is in communication connection with the first temperature sensor 111, the second temperature sensor 121, and the outdoor throttling component 130, and is configured to acquire temperature values measured by the first temperature sensor 111 and the second temperature sensor 121 and opening or closing of the outdoor throttling component 130.
Meanwhile, an indoor controller is also preset in the indoor unit 200, if N indoor units 200 are provided, N indoor controllers correspond to the indoor units, the outdoor controller can correspondingly communicate with the indoor controllers, the indoor controllers can correspondingly acquire the value of the third temperature sensor and then communicate with the indoor controllers, and the outdoor controllers can also communicate with the indoor controllers after the multi-split system is powered on to realize the allocation of addresses of the indoor units.
The outdoor controller is used for: before the connection is matched, the outdoor throttling part 130 is controlled to be closed or opened for a fixed opening, the compressor and the outdoor fan of the outdoor unit 100 of the multi-split air conditioner are controlled to operate, the multi-split air conditioner is communicated with a plurality of indoor controllers to control N indoor units 200 to operate, and after the multi-split air conditioner operates for a preset time period, the multi-split air conditioner is communicated with the indoor controllers to transmit signals to the indoor controllers to control all fans of the indoor units 200 to stop operating, the compressor operates at a preset frequency, the number i of outdoor throttling parts is controlled to be opened, and the rest outdoor throttling parts 130 are closed;
and in a preset time period, acquiring temperature values of the second temperature sensor 121 at intervals of a preset time interval, respectively and separately accumulating and summing the temperature values by communicating with the indoor controller to acquire temperature values of the third temperature sensor, obtaining the indoor unit 200 matched with the outdoor throttling element I according to a comparison result of an accumulated summation value of the temperature of the third temperature sensor and a first preset value, and obtaining the second temperature sensor 121 matched with the outdoor throttling element I according to a comparison result of an accumulated summation value of the temperature of the second temperature sensor 121 and a second preset value;
and sequentially controlling the other outdoor throttling components 130 to be opened, and performing matching connection of the indoor unit 200 and the second temperature sensor 121 on the other outdoor throttling components 130.
The specific operation control steps are as follows:
step A: the multi-split air conditioner is powered on, after the multi-split air conditioner is powered on, an outdoor controller of the outdoor unit 100 communicates with an indoor controller of the indoor unit 200, after the communication is completed, the outdoor unit 100 allocates addresses to the indoor controllers of the indoor units 200 through the outdoor controller, so that each indoor unit 200 is provided with an address unit corresponding to the indoor unit 200, and the outdoor unit 100 knows whether the indoor unit 200 is the indoor unit 200 No. 1, the indoor unit 200 No. 2 or the indoor unit 200 No. N according to the address unit information of the indoor unit 200.
And B: the outdoor throttling components 130 in the multi-split air conditioner are controlled to be closed or opened, the operation of the compressor and the fan of the outdoor unit 100 in the multi-split air conditioner is controlled, and a plurality of indoor units 200 in the N indoor units 200 operate according to the same parameters, preferably, in the embodiment, the indoor units 200 are all operated at high wind, and operate for a period of time, which may be 10-600 seconds.
In this embodiment, all the indoor units 200 are operated in the same working condition for a period of time in advance, because the parameters of each indoor unit 200 can be substantially stabilized after the indoor units are operated for a period of time, the accuracy of the later-stage detection parameters is ensured, and the operation of the plurality of indoor units 200 in the same working condition can also ensure that the temperatures of all the indoor units 200 are substantially maintained at the same temperature value, so that the initial states of all the indoor units 200 are the same, the comparison of the temperature values of each indoor unit 200 in the later stage is facilitated, and the accuracy of the matching connection between the indoor unit 200 and the outdoor throttling component 130, and between the outdoor throttling component 130 and the second temperature sensor 121 is ensured.
And C: matching the indoor unit 200 corresponding to the outdoor throttling component 130 No. i, the second temperature sensor 121:
step C1, controlling all the fans of the indoor units 200 to stop running, controlling the compressor to run at a preset frequency, controlling the number i outdoor throttling part 130 to be opened, and controlling the other outdoor throttling parts 130 to be closed, meanwhile, presetting a first timer and a second timer in the multi-split air conditioner, wherein the first timer and the second timer are cleared before being used to ensure accurate later-period measurement, and the first timer and the second timer start to time after being cleared, and in the embodiment, the corresponding time of the first timer is T1, and the corresponding time of the second timer is T2;
and step C2, the detection mode can be a cooling or heating mode, if the detection mode is the cooling mode, the temperature values Ta of the third temperature sensors corresponding to the N indoor units 200 are detected, and when T1< M, the indoor units 200 are processed according to the formula: ta _ sum (t) = Ta _ sum (t) + Ta (t), t =1,2,3,4.. said., t represents the number of indoor units 200, if t =1, it is corresponding to Ta _ sum (t) obtained by the 1 st indoor unit 200, if t =2, it represents it as the second indoor unit 200, and so on.
In this embodiment, the T2 timer is cleared once, the next time is executed when the T2 timer > N, and at the same time, the T2 is cleared, the cumulative summation is once completed until T1= M, it is determined whether only one indoor unit 200 satisfies that the cumulative summation value is smaller than a first refrigeration preset value, the first refrigeration preset value may be Q1, and if yes, the indoor unit 200 is matched with the number i outdoor throttling component; if the accumulated sum of the indoor units 200 is smaller than the first preset refrigeration value, it indicates that there may be a plurality of indoor units 200 connected to the outdoor throttling component 130 at the same time, and this situation is unlikely to occur, and at this time, it may be determined that the outdoor throttling component 130 is faulty;
c3, when the cumulative sum value of all the indoor units 200 is not less than the first refrigeration preset value at T1< M, resetting the second timer and continuing to circulate the step C2; when T1 is greater than M, if all indoor units 200 do not meet the condition that the accumulated sum value is smaller than the first refrigeration preset value, the indoor unit 200 is not connected with the No. i outdoor throttling component 130;
specifically, in this embodiment, the matching process of the number i outdoor throttling component 130 in the multi-split air conditioner is as follows:
and 2 timers start timing from zero, when the numerical value of the second timer is greater than N for the first time, detecting a third temperature sensor value corresponding to each indoor unit 200, then performing cumulative summation on the temperature in each indoor unit 200 according to a cumulative summation formula, then comparing the cumulative summation value of each indoor unit 200 with a first refrigeration preset value, and if only one indoor unit 200 meets the condition that the cumulative summation value is less than the first refrigeration preset value during the first circulation, judging that the No. i outdoor throttling component 130 is matched with the indoor unit 200.
If the temperature of a plurality of indoor units 200 in the first cycle meets the condition that the accumulated sum value is smaller than the first refrigeration preset value, it can be judged that the outdoor throttling component 130 is in a fault state, if the temperature of all the indoor units 200 in the first cycle does not meet the condition that the accumulated sum value is smaller than the first refrigeration preset value, and at the moment, T1< M, the second timer is reset, and then the step C2 is executed in a continuous cycle mode.
If the accumulated summation calculation comparison is continued, the comparison process is the same as the first cycle, that is, in this embodiment, when the accumulated summation values of all the indoor units 200 do not satisfy the condition that the accumulated summation values are smaller than the first refrigeration preset value, the accumulated summation needs to be performed every N seconds within the time value M range, and then the operation is cleared and recycled.
When the time M is exceeded and the indoor unit 200 with the cumulative sum smaller than the first preset refrigeration value is not detected, it represents that the indoor unit 200 is not connected to the outdoor throttling part number i 130.
Meanwhile, in the present embodiment, the number i outdoor throttling component 130 is matched with the indoor unit 200, that is, the indoor unit 200 is correspondingly connected with the corresponding outdoor liquid pipe 110, and the indoor unit 200 is also matched with the corresponding first temperature sensor 111.
And C4, detecting the temperature Tb of the second temperature sensors 121 corresponding to the N outdoor air pipes 120, and when T1< M, using the multiple outdoor air pipes 120 according to the formula: tb _ sum (t) = Tb _ sum (t) + Tb (t), cumulative summation is performed, t =1,2,3,4.. once, t =1 represents the 1 st outdoor air pipe 120, and so on, whether the value of the second temperature sensor 121 on only one outdoor air pipe 120 satisfies that the cumulative summation value is less than the second refrigeration preset value is determined, if yes, the i-number outdoor throttling component 130 is matched with the second temperature sensor 121, the second refrigeration preset value is Q2, and if the cumulative summation value of a plurality of indoor units 200 is less than the second refrigeration preset value, the outdoor throttling component 130 is determined to be in fault;
step C5, when the temperature value of the second temperature sensors 121 on all the outdoor air pipes 120 does not meet the condition that the accumulated summation value is smaller than the second refrigeration preset value when the T1 is less than M, clearing the second timer, and continuing to circulate the step C4;
when T1> M, if the temperature values of the second temperature sensors 121 on all the outdoor air pipes 120 do not satisfy that the cumulative sum value is smaller than the second refrigeration preset value, it is determined that the indoor unit 200 is not connected to the No. i outdoor throttling part 130.
The matching cycle process of the second temperature sensor 121 on the outdoor air pipe 120 and the No. i outdoor throttling component 130 is the same as the matching cycle of the No. i outdoor throttling component 130 and the indoor unit 200, and details are not repeated here.
Each second temperature sensor 121 corresponds to a specific outdoor air pipe 120, so that the second temperature sensor 121 and the outdoor throttling part 130 are matched, and then the outdoor air pipe 120 and the outdoor liquid pipe 110 are matched correspondingly, thereby realizing the automatic matching connection between the indoor unit 200 and the corresponding outdoor liquid pipe 110 and outdoor air pipe 120.
Preferably, in this embodiment, the value range of the first refrigeration preset value is as follows: -30-40 degrees, with N ranging from: 1-60s, wherein the value range of M is 60-600s, and the value range of the second refrigeration preset value is as follows: -30-50 degrees.
In this embodiment, the fans of all the indoor units 200 are stopped to ensure that all the indoor units 200 are in the same working condition, after the outdoor throttling component 130 of the number i is opened, the indoor units 200 connected to the corresponding indoor units are cooled in the cooling mode, but because the corresponding fans are closed and do not exchange heat with the outside, the values of the third temperature sensor and the second temperature sensor 121 corresponding to the fans are lower than the values of the other indoor units 200 and the values of the other outdoor air pipes 120 and are lower than the first cooling preset value and the second cooling preset value, so that the indoor units 200 and the second temperature sensors 121 corresponding to the outdoor throttling component 130 of the number i can be determined by detecting the Ta _ sum (t) value corresponding to each indoor unit 200 and the Tb _ sum (t) value corresponding to each outdoor air pipe 120.
And step C6, if the indoor unit is in the heating mode, detecting the temperature values Tc of the third temperature sensors corresponding to the N indoor units 200 respectively, wherein the corresponding time of the second timer is T2, and when T1< M, the indoor units 200 are arranged according to the formula: tc _ sum (t) = Tc _ sum (t) + Tc (t), t =1,2,3,4.
Judging whether only one indoor unit 200 meets the condition that the accumulated summation value is larger than a first heating preset value, if so, matching the indoor unit 200 with the No. i outdoor throttling part 130; the first heating preset value is Q3, if the cumulative sum of the indoor units is larger than the first heating preset value, the outdoor throttling component 130 is judged to be in fault;
c7, when the cumulative sum value of all the indoor units 200 is not larger than the first heating preset value at T1< M, resetting the second timer and continuing to circulate the step C6; when T1 is greater than M, if all indoor units 200 do not meet the condition that the accumulated summation value is greater than the first heating preset value, the indoor unit 200 is not connected with the No. i outdoor throttling component 130;
and step C8, detecting temperature values Td of the second temperature sensors 121 corresponding to the N outdoor air pipes 120 respectively, and when T1< M, using the multiple outdoor air pipes 120 according to the formula: td _ sum (t) = Td _ sum (t) + Td (t), t =1,2,3,4.. the cumulative summation is performed, and when it is determined that only one outdoor air pipe 120 meets the cumulative summation value greater than the second heating preset value, if yes, the No. i outdoor throttling component 130 is matched with the second temperature sensor 121; the second heating preset value is Q4, and if the values of the plurality of second temperature sensors 121 meet the regulation, it represents that the outdoor throttling component 130 is in fault;
step C9, when the cumulative sum value of all the outdoor air pipes 120 is not larger than the second heating preset value when T1 is larger than M, clearing the second timer, and continuing to circulate the step C8; when T1 is greater than M, if all outdoor air pipes 120 do not meet the condition that the accumulated sum value is greater than the second heating preset value, the fact that the number i outdoor throttling component 130 is not connected with the indoor unit 200 is judged; in this embodiment, the matching cycle flow for matching the i-number outdoor throttling component 130 with the indoor unit 200 and the second temperature sensor 121 in the heating mode is similar, and details are not repeated here.
In this embodiment, the fans of all the indoor units 200 are stopped to ensure that all the indoor units 200 are in the same working condition, after the outdoor throttling component 130 of the number i is opened, the indoor units 200 correspondingly connected to the indoor units are heated in the heating mode, but because the corresponding fans are closed and do not exchange heat with the outside, the values of the third temperature sensor and the second temperature sensor 121 corresponding to the outdoor throttling component 130 of the number i are higher than the values corresponding to the other indoor units 200 and the outdoor air pipes 120 and are higher than the first heating preset value and the second heating preset value, so that the indoor units 200 and the second temperature sensors 121 corresponding to the outdoor throttling components 130 of the number i can be determined by detecting Tc _ sum (t) corresponding to each indoor unit 200 and Td _ sum (t) corresponding to each outdoor air pipe 120.
Step D: the loop execution step B, C matches the remaining outdoor throttling element 130 with the indoor unit 200 and the second temperature sensor 121.
Specifically, the third temperature sensor in this embodiment may be disposed at a position of the indoor unit 200 near the evaporator, on a liquid pipe of the indoor unit 200, or on an air pipe of the indoor unit 200.
After the state 1 is completed, the i-th outdoor throttling element 130 corresponds to the p-th indoor unit 200 and corresponds to the g-th second temperature sensor 121, and the corresponding matching relationship between the outdoor throttling element 130 and the indoor unit 200 and the second temperature sensor 121 is completed.
When the user turns on the indoor unit 200 p later, the outdoor throttle member 130 i operates, and the corresponding second temperature sensor 121 g is operated. The automatic wiring straightening process of the other outdoor throttling element 130 is similar and will not be described herein.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions.
Claims (4)
1. A multi-split air conditioner comprises:
each indoor unit comprises an indoor air pipe and an indoor liquid pipe, and a third temperature sensor is arranged in each indoor unit; the indoor controllers are provided with N, and are in communication connection with the corresponding third temperature sensors;
the outdoor unit is in communication connection with the N indoor units through a communication line,
the outdoor unit includes:
the outdoor liquid pipe assembly comprises N outdoor liquid pipes, each outdoor liquid pipe is preset with an outdoor throttling part and a first temperature sensor matched with the outdoor throttling part, and any outdoor liquid pipe in the outdoor liquid pipes can be randomly connected to an indoor liquid pipe of any indoor machine;
each outdoor air pipe is provided with a second temperature sensor, and any outdoor air pipe in the outdoor air pipes can be connected to any indoor air pipe of any indoor machine;
the outdoor controller is in communication connection with the N indoor controllers, the first temperature sensor, the second temperature sensor and the outdoor throttling component, and can be in communication with the indoor controllers and allocate addresses to the indoor units when the multi-split air conditioning system is powered on;
the outdoor controller is used for: before the matching connection, an outdoor throttling part is controlled to be closed or opened for a fixed opening, and a compressor and an outdoor fan of the outdoor unit operate;
the indoor controller is communicated with the indoor controller to control the N indoor units to operate, and the indoor controller is communicated with the indoor controller to control all the fans of the indoor units to stop operating after the indoor controller operates for a preset time period; controlling the compressor to run at a preset frequency, opening the No. i outdoor throttling component, and closing the other outdoor throttling components;
acquiring temperature values of a second temperature sensor and a third temperature sensor at intervals of preset time within a preset time period, respectively and separately accumulating and summing the temperature values, obtaining an indoor unit matched with the No. i outdoor throttling component according to a comparison result of an accumulated summation value of the temperature of the third temperature sensor and a first preset value, and obtaining a second temperature sensor matched with the No. i outdoor throttling component according to a comparison result of an accumulated summation value of the temperature of the second temperature sensor and a second preset value; and sequentially controlling the other outdoor throttling parts to be opened, and carrying out matching connection of the indoor unit and the second temperature sensor on the other outdoor throttling parts.
2. A multi-split air conditioner as claimed in claim 1, wherein the first preset value includes a first preset cooling value and a first preset heating value, the second preset value includes a second preset cooling value and a second preset heating value, and the controller pre-judges an operation mode of the multi-split air conditioner before acquiring values of a third temperature sensor and a second temperature sensor;
when the multi-split air conditioner is in a refrigerating mode, the controller judges the indoor unit matched with the ith outdoor throttling component according to whether the obtained accumulated sum value of the third temperature sensor is smaller than a set first refrigerating preset value or not;
judging a second temperature sensor matched with the ith outdoor throttling component according to whether the obtained accumulated sum value of the second temperature sensor is smaller than a set second refrigeration preset value or not;
when the multi-split air conditioner is in a heating mode, the controller judges the indoor unit matched with the ith outdoor throttling component according to whether the obtained accumulated sum value of the third temperature sensor is larger than a set first heating preset value or not;
and judging the second temperature sensor matched with the ith outdoor throttling component according to whether the obtained accumulated sum value of the second temperature sensor is larger than a set second heating preset value or not.
3. A multi-split air conditioner according to claim 2,
when the controller acquires that the accumulated sum value of the third temperature sensors acquired by the indoor units is smaller than a first refrigeration preset value or the accumulated sum value of the second temperature sensors acquired by the outdoor air pipes is smaller than a second refrigeration preset value, the controller indicates that the outdoor throttling component is in fault; and when the controller acquires that the accumulated sum value of the third temperature sensors acquired by the indoor units is greater than the second heating preset value or the accumulated sum value of the second temperature sensors acquired by the outdoor air pipes is less than the second heating preset value, indicating that the outdoor throttling component is in fault.
4. The multi-split air conditioner according to claim 3, wherein the controller controls all the indoor units to operate such that all the indoor units operate at a constant air volume.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911156264.5A CN111006306B (en) | 2019-11-22 | 2019-11-22 | Multi-split air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911156264.5A CN111006306B (en) | 2019-11-22 | 2019-11-22 | Multi-split air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111006306A CN111006306A (en) | 2020-04-14 |
| CN111006306B true CN111006306B (en) | 2021-09-07 |
Family
ID=70112888
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911156264.5A Active CN111006306B (en) | 2019-11-22 | 2019-11-22 | Multi-split air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111006306B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111306699A (en) * | 2020-03-03 | 2020-06-19 | 青岛海尔空调器有限总公司 | Method and device for controlling multi-split air conditioner and air conditioner |
| CN113566318A (en) * | 2021-07-30 | 2021-10-29 | 佛山市顺德区美的电子科技有限公司 | Control method and control device of air conditioner, air conditioner and storage medium |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060119428A (en) * | 2005-05-20 | 2006-11-24 | 삼성전자주식회사 | Refrigerant pipe connection inspection method for multi pipe multi type air conditioner |
| CN1908535A (en) * | 2005-08-06 | 2007-02-07 | 三星电子株式会社 | Pipe inspection method and pipe-inspection operation method of multi-air conditioner |
| CN101231016A (en) * | 2007-01-27 | 2008-07-30 | 三星电子株式会社 | Device and method for connecting and detecting pipe of multi-connected air conditioner |
| CN103292430A (en) * | 2012-03-01 | 2013-09-11 | 三菱电机株式会社 | Multiple-unit air conditioning apparatus |
| CN106765741A (en) * | 2016-11-18 | 2017-05-31 | 青岛海信日立空调系统有限公司 | A kind of multi-connected unit control system |
| CN109695935A (en) * | 2018-12-29 | 2019-04-30 | 上海新时达电气股份有限公司 | A kind of air-conditioner addressing method, electronic equipment and storage medium |
-
2019
- 2019-11-22 CN CN201911156264.5A patent/CN111006306B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060119428A (en) * | 2005-05-20 | 2006-11-24 | 삼성전자주식회사 | Refrigerant pipe connection inspection method for multi pipe multi type air conditioner |
| CN1908535A (en) * | 2005-08-06 | 2007-02-07 | 三星电子株式会社 | Pipe inspection method and pipe-inspection operation method of multi-air conditioner |
| CN101231016A (en) * | 2007-01-27 | 2008-07-30 | 三星电子株式会社 | Device and method for connecting and detecting pipe of multi-connected air conditioner |
| CN103292430A (en) * | 2012-03-01 | 2013-09-11 | 三菱电机株式会社 | Multiple-unit air conditioning apparatus |
| CN106765741A (en) * | 2016-11-18 | 2017-05-31 | 青岛海信日立空调系统有限公司 | A kind of multi-connected unit control system |
| CN109695935A (en) * | 2018-12-29 | 2019-04-30 | 上海新时达电气股份有限公司 | A kind of air-conditioner addressing method, electronic equipment and storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111006306A (en) | 2020-04-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11769118B2 (en) | Systems and methods for automated diagnostics of HVAC systems | |
| JP6359423B2 (en) | Control device for air conditioning system, air conditioning system, and abnormality determination method for control device for air conditioning system | |
| US9677799B2 (en) | Refrigeration and air-conditioning apparatus, refrigerant leakage detection device, and refrigerant leakage detection method | |
| US20090314017A1 (en) | Air conditioner | |
| US11713893B2 (en) | Refrigeration leak detection | |
| US9739513B2 (en) | Air conditioning apparatus | |
| US10684052B2 (en) | Diagnostic mode of operation to detect refrigerant leaks in a refrigeration circuit | |
| CN111006306B (en) | Multi-split air conditioner | |
| CN108548273A (en) | A kind of air-conditioning fault detection method and device | |
| EP3324137B1 (en) | Air conditioner and control method thereof | |
| CN109237721A (en) | Electric expansion valve fault detection method for air-conditioning | |
| WO2016063550A1 (en) | Control device for air conditioning system, air conditioning system, and method for determining anomaly of air conditioning system | |
| CN104535884B (en) | Judge domestic multi-connection machine indoor set data wire whether the method for wrong | |
| KR100896283B1 (en) | Air Conditioner And Control Method For The Same | |
| US11408630B2 (en) | Management system for bulding equipment | |
| US20200363088A1 (en) | Single-package air conditioner and methods of operation | |
| CN110926544B (en) | Detection equipment for heat exchanger unit and online automatic detection method thereof | |
| JP7336458B2 (en) | Refrigeration system connection relationship determination device, refrigeration system and program | |
| CN114992765B (en) | Air conditioning system and self-cleaning control method thereof | |
| US11371761B2 (en) | Method of operating an air conditioner unit based on airflow | |
| US20230304686A1 (en) | Heat Pump Fault Detection System | |
| JP2007312327A (en) | Automatic address setting system | |
| JPH07139784A (en) | Air conditioner | |
| JP2015152290A (en) | Air conditioning device | |
| GB2574750A (en) | Air conditioning system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |