CN111121176A - Air condensing units and air conditioner - Google Patents

Air condensing units and air conditioner Download PDF

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Publication number
CN111121176A
CN111121176A CN202010059590.0A CN202010059590A CN111121176A CN 111121176 A CN111121176 A CN 111121176A CN 202010059590 A CN202010059590 A CN 202010059590A CN 111121176 A CN111121176 A CN 111121176A
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CN
China
Prior art keywords
outdoor
outdoor unit
fan
unit
state
Prior art date
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Granted
Application number
CN202010059590.0A
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Chinese (zh)
Other versions
CN111121176B (en
Inventor
石磊
赵永亮
宋旭彤
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Qingdao Hisense Hitachi Air Conditioning System Co Ltd
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Qingdao Hisense Hitachi Air Conditioning System Co Ltd
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Application filed by Qingdao Hisense Hitachi Air Conditioning System Co Ltd filed Critical Qingdao Hisense Hitachi Air Conditioning System Co Ltd
Priority to CN202010059590.0A priority Critical patent/CN111121176B/en
Publication of CN111121176A publication Critical patent/CN111121176A/en
Priority to PCT/CN2020/106923 priority patent/WO2021143107A1/en
Application granted granted Critical
Publication of CN111121176B publication Critical patent/CN111121176B/en
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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
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • 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
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/46—Component arrangements in separate outdoor 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
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/87—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling absorption or discharge of heat in outdoor units
    • F24F11/871—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling absorption or discharge of heat in outdoor units by controlling outdoor fans
    • 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
    • F24F11/88—Electrical aspects, e.g. circuits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/20—Humidity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/40—Pressure, e.g. wind pressure

Abstract

The invention discloses an air conditioner outdoor unit and an air conditioner, wherein the air conditioner outdoor unit comprises at least one outdoor fan; the fan state acquisition module is used for acquiring the running state of each outdoor fan; an operation control module that executes normal operation control or emergency operation control according to an operation state; the unit state acquisition module is used for acquiring unit operation parameters when the air conditioner outdoor unit operates; controlling the running state of the air conditioner at least according to the unit running parameters; the emergency operation control is to control the outdoor fan set in the emergency operation state in the air conditioner outdoor unit to stop; the operation state includes an emergency operation state in the case of a failure and a normal operation state in the case of no failure. The invention is used for ensuring the normal operation of the air conditioner by utilizing at least one fan which is not in fault when one part of fans in the air conditioner outdoor unit are in fault, prolonging the time for a user to use the air conditioner, improving the use experience of the user and striving for time for allocating spare parts.

Description

Air condensing units and air conditioner
Technical Field
The invention belongs to the technical field of outdoor units, and particularly relates to an air conditioner outdoor unit and an air conditioner.
Background
The air conditioner comprises an air conditioner indoor unit and an air conditioner outdoor unit, wherein the air conditioner indoor unit is connected with the air conditioner outdoor unit through a refrigerant connecting pipeline. The indoor unit of the air conditioner is provided with an indoor heat exchanger and an indoor fan; the outdoor unit of the air conditioner comprises an outdoor heat exchanger, a variable frequency compressor, a four-way valve and a throttling element which are communicated through a refrigerant connecting pipeline, and further comprises an outdoor fan.
In the related art outdoor unit of an air conditioner, when an outdoor fan in the outdoor unit fails (e.g., a failure of a fan body, a failure of a fan, a failure of a driving device related to the fan, etc.), the outdoor unit of the air conditioner is stopped, so that the air conditioner cannot operate normally. Such a shutdown condition can significantly affect the user experience if the period of time that the air conditioner is not operating occurs during an extraordinary period of time that the user is using the air conditioner.
When the outdoor fan is in fault, service personnel outside the plant need to apply for and allocate spare parts, a certain time is also consumed, and a user cannot use the air conditioner within the time, so that the use experience of the user is further reduced.
Disclosure of Invention
The invention provides an air conditioner outdoor unit aiming at the problem that an existing air conditioner outdoor unit cannot be used when an outdoor fan fails, wherein when a part of fans in the air conditioner outdoor unit fail, at least one fan which does not fail is utilized to ensure the normal operation of an air conditioner, the time for a user to use the air conditioner is prolonged, the use experience of the user is improved, and the time is strived for allocating spare parts.
In order to realize the purpose of the invention, the invention is realized by adopting the following technical scheme:
an outdoor unit of an air conditioner, comprising at least one outdoor fan, characterized in that the outdoor unit of an air conditioner further comprises: the fan state acquisition module is used for acquiring the running state of each outdoor fan; an operation control module that executes normal operation control or emergency operation control according to the operation state; the unit state acquisition module is used for acquiring unit operation parameters when the air conditioner outdoor unit operates; controlling the running state of the air conditioner at least according to the unit running parameters; wherein the emergency operation control is to control the outdoor fan set to an emergency operation state in the air conditioner outdoor unit to stop; the operating state includes an emergency operating state when there is a failure and a normal operating state when there is no failure.
The outdoor unit of an air conditioner as described above further includes: the system initialization module is used for configuring the type of an outdoor unit according to the acquired number of the outdoor fans of the air conditioner outdoor unit and initializing the unit operation parameters and state identification variables for emergency operation; the fan state identification module is used for identifying the running state of each outdoor fan according to the type of the outdoor unit; the outdoor unit types include a single-fan outdoor unit and a multi-fan outdoor unit.
As mentioned above, the unit operation parameters at least include the pressure and temperature of the air conditioner outdoor unit.
As described above, when the emergency operation time of the air conditioner outdoor unit exceeds a preset time threshold, the air conditioner is shut down, wherein the emergency operation time is: when the air conditioner outdoor unit comprising at least two outdoor fans operates, a part of the outdoor fans in the air conditioner outdoor unit are in emergency operation control, and a part of the outdoor fans are in operation time of the air conditioner outdoor unit under normal operation control.
The outdoor unit of an air conditioner as described above further includes: and the fan state setting module is used for setting the operation state of the outdoor fan to be an emergency operation state when the outdoor fan of the air conditioner outdoor unit fails.
According to the air conditioner outdoor unit provided by the invention, when at least one outdoor fan exists in the outdoor unit and when a part of outdoor fans in the outdoor unit are in fault, the outdoor fans with the faults are subjected to emergency operation control, and the outdoor fans without the faults are subjected to normal operation control, so that the air conditioner can normally operate within a period of time even if the outdoor fans are in fault, the service time of the air conditioner is prolonged, complaints that users cannot use the air conditioner when the outdoor fans are in fault are reduced, time is won for applying and allocating spare parts, and the use experience and the service quality of the users are improved.
The invention provides an air conditioner aiming at the problem that an outdoor unit of the existing air conditioner cannot be used when an outdoor fan fails, wherein when a part of fans in the outdoor unit fail, at least one fan which does not fail is utilized to ensure the normal operation of the air conditioner, the time for a user to use the air conditioner is prolonged, the use experience of the user is improved, and the time is strived for allocating spare parts.
The invention also relates to an air conditioner, which comprises a master outdoor unit and at least one slave outdoor unit, wherein the master outdoor unit is respectively in communication connection with the slave outdoor units, and each of the master outdoor unit and the slave outdoor units comprises at least one outdoor fan, and the air conditioner is characterized in that the master outdoor unit comprises: the first fan state acquisition module is used for acquiring the running state of each outdoor fan of the main outdoor unit; a first operation control module that executes normal operation control or emergency operation control according to the operation state; the first unit state acquisition module is used for acquiring unit operation parameters when the main outdoor unit operates; the operation scheduling module is used for managing the operation states of all the outdoor units; the slave outdoor unit includes: a second fan state obtaining module, configured to obtain an operation state of each outdoor fan of the slave outdoor unit; a second operation control module that executes normal operation control or emergency operation control according to the operation state; the second unit state acquisition module is used for acquiring unit operation parameters when the slave outdoor unit operates; the state uploading module is used for uploading the unit operation parameters of the slave outdoor unit to the master outdoor unit; the dispatching obeying module is used for receiving control information sent by the main outdoor unit; controlling the running state of the air conditioner at least according to the unit running parameters of all the outdoor units; the emergency operation control means controlling the outdoor fan set to an emergency operation state in the master outdoor unit or the slave outdoor unit to stop, wherein the operation state includes an emergency operation state in case of a fault and a normal operation state in case of no fault.
As described above, each of the master outdoor unit and the slave outdoor units includes: the system initialization module is used for configuring the types of the outdoor units according to the acquired number of the outdoor fans of the corresponding outdoor units, and initializing unit operation parameters and emergency operation state identification variables of the corresponding outdoor units; the fan state identification module is used for identifying the running state of each outdoor fan according to the type of the outdoor unit; the outdoor unit types include a single-fan outdoor unit and a multi-fan outdoor unit.
In the air conditioner, the unit operating parameters at least include suction and discharge pressures and temperatures of the outdoor unit.
According to the air conditioner, when the emergency operation time of at least one outdoor unit exceeds the corresponding preset time threshold value, the air conditioner is stopped; wherein the emergency operation time is as follows: when an outdoor unit including at least two outdoor fans operates, a part of the outdoor fans in the outdoor unit are in emergency operation control and a part of the outdoor fans are in operation time of the outdoor unit under normal operation control.
As described above, the master outdoor unit and each slave outdoor unit each include: and the fan state setting module is used for setting the running state of the outdoor fan to be an emergency running state when the outdoor fan of the corresponding outdoor unit fails.
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 block diagram of an air conditioner outdoor unit according to an embodiment of the present invention;
fig. 2 is a schematic block diagram illustrating communication between a master outdoor unit and a slave outdoor unit in an embodiment of the air conditioner according to the present invention.
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.
The outdoor unit is divided into a single outdoor unit and a plurality of outdoor units, the single outdoor unit is respectively communicated with each indoor unit through a communication line, each outdoor unit comprises a master outdoor unit and at least one slave outdoor unit, the master outdoor unit is communicated with each indoor unit through the communication line, and each slave outdoor unit is indirectly communicated with each indoor unit through the master outdoor unit.
In the outdoor unit, whether the outdoor fan operates normally relates to whether the outdoor unit operates normally, and further relates to whether the air conditioner operates normally.
Under the prior art condition, when the outdoor fan fails, the air conditioner is forced to stop to wait for maintenance or replacement of spare parts, and at the moment, the air conditioner cannot be used.
In order to solve the technical problem, the invention can use the outdoor fan without faults to continue the normal operation of the air conditioner when all the outdoor fans in the outdoor unit are in faults.
Example one
The present embodiment relates to an outdoor unit of an air conditioner, which is a single outdoor unit including at least one outdoor fan.
In this embodiment, for convenience of description, an air conditioner outdoor unit having one outdoor fan or two outdoor fans is taken as an example for description.
If one outdoor fan is provided in the outdoor unit, it is referred to as an outdoor fan a, and if two outdoor fans are provided in the outdoor unit, it is referred to as an outdoor fan a1 and an outdoor fan a 2.
If an outdoor fan A exists in the outdoor unit, if the outdoor fan A fails, the outdoor unit is forbidden to operate, and the whole air conditioning system stops operating; if the outdoor fan A has no fault, the outdoor fan A enters normal operation control, and the whole air-conditioning system operates normally.
If two outdoor fans A1 and A2 exist in the outdoor unit, if the outdoor fans A1 and A2 both have faults, the outdoor unit is forbidden to operate, and the whole air conditioning system stops operating; if the outdoor fans A1 and A2 have no fault, the outdoor fans A1 and A2 respectively enter normal operation control, and the whole air-conditioning system operates normally; if one of the outdoor fans A1 and A2 has a fault, the faulty outdoor fan enters emergency operation control, that is, the outdoor fan is prohibited from operating, the outdoor fan without the fault enters normal operation control, and the whole air conditioning system operates normally.
The normal operation control described herein is not different from the conventional air conditioner in the manner of controlling the operation of the outdoor fan, and can be known by referring to the manner of controlling the outdoor fan of the conventional air conditioner, for example, the rotation speed of the outdoor fan can be periodically controlled according to the parameters such as the frequency of the outdoor unit compressor, the suction/discharge pressure, and the temperature, and the operation state, the failure information, etc. of the outdoor fan can be monitored in real time.
As shown in fig. 1, the outdoor unit of the air conditioner of the present embodiment mainly includes a fan status obtaining module 11, an operation control module 12, and a unit status obtaining module 13.
The fan state acquiring module 11 of the present embodiment is configured to acquire an operation state of each outdoor fan, where the operation state includes an emergency operation state when the outdoor fan has a fault and a normal operation state when the outdoor fan has no fault.
Specifically, the system initialization module 14 is configured to obtain the number of the outdoor fans in the current outdoor unit to configure and determine the types of the units, including the single-fan outdoor unit and the multi-fan outdoor unit.
In this embodiment, a multi-fan outdoor unit is described by taking a dual-fan outdoor unit as an example.
In order to ensure the control of the outdoor fans during emergency operation, the system initialization module 14 also initializes a state identification variable for emergency operation, such as a count variable for counting the number of outdoor fans currently in the outdoor unit, and a time variable for counting the emergency operation time of the outdoor unit during emergency operation.
In the present embodiment, the fan status acquisition module 11 determines the operation status of the corresponding outdoor fan based on the determined unit type (single-fan outdoor unit or multi-fan outdoor unit).
In the present embodiment, the operation state of the outdoor fan may be set as follows.
In the operation process of the outdoor unit, once the outdoor fan is found to have a fault, the operation state of the outdoor fan is correspondingly set to an emergency operation state, and such setting can be set by a fan state setting module (not shown), for example, a manual dial setting.
Of course, other software programs may be adopted to automatically recognize the failure condition of the outdoor fan, and set the operation state of the outdoor fan with the failure to the emergency operation state, and so on.
The operation control module 12 of the present embodiment is configured to control the outdoor fan to perform normal operation control or emergency operation control according to the operation state of the outdoor fan. The emergency operation state corresponds to emergency operation control, and the normal operation state corresponds to normal operation control.
And when the operation state of the outdoor fan is collected to be an emergency operation state, the outdoor fan enters emergency operation control. And when the operation state of the outdoor fan is collected to be a normal operation state, the outdoor fan enters normal operation control.
For a single fan outdoor unit, there are two cases: 1) when the running state of the outdoor fan A is a normal running state, the single-fan outdoor unit runs normally; 2) and when the running state of the outdoor fan A is the emergency running state, the single-fan outdoor unit is forbidden to run.
For a dual fan outdoor unit, there are three cases: 1) when the operation states of the outdoor fans A1 and A2 are normal operation states, the double-fan outdoor unit operates normally; 2) the operation states of the outdoor fans A1 and A2 are emergency operation states, and the operation of the double-fan outdoor unit is forbidden; 3) the operation state of one of the outdoor fans a1 and a2 is a normal operation state, and the operation state of the other of the outdoor fans a1 and a2 is an emergency operation state, the outdoor fan in the emergency operation state enters emergency operation control, and the outdoor fan in the normal operation state shifts to normal operation control.
The unit state obtaining module 13 of this embodiment obtains unit operation parameters, such as suction and discharge pressure, temperature, and the like, according to the operating outdoor unit.
The system initialization module 14 also initializes the unit operation parameters, such as the pressure and temperature of the outdoor unit compressor.
For the outdoor unit with the outdoor fan controlled to normally operate (i.e. the running outdoor unit), the set running parameters, such as suction and discharge pressure, temperature and other parameters, are monitored in real time through the set abnormal control module 15, and the running state of the outdoor unit of the air conditioner is monitored in real time.
For example, once the pressure of the suction and exhaust air exceeds the pressure limit or the temperature exceeds the temperature limit, the air conditioning system is stopped to avoid affecting the reliability of the air conditioning system, otherwise, the air conditioner continues to operate and continues to monitor the operation state of the outdoor unit.
In order to avoid that the related fault of the outdoor fan with fault affects the operation of the system under the condition of the 3) th condition of the double-fan outdoor unit, the system does not monitor the abnormal information of the outdoor fan any more.
In addition, in order to prevent the outdoor unit from being in emergency operation for a long time and affecting the reliability of the system, in the embodiment, the system is provided with an emergency operation time threshold value, and when the emergency operation time when the counted outdoor unit enters the emergency operation exceeds the emergency operation time threshold value, the air conditioning system is stopped to wait for recovering the retry state.
Wherein the outdoor unit entering emergency operation means that the outdoor unit is in the case of 3) of the double fan outdoor unit as described above.
According to the air conditioner outdoor unit provided by the invention, when a single outdoor unit has multiple outdoor fans and one part of outdoor fans in the outdoor unit has faults, the outdoor fans with the faults are subjected to emergency operation control, and the outdoor fans without the faults are subjected to normal operation control, so that the air conditioner can normally operate within a period of time when the outdoor fans have faults in time, the service time of the air conditioner is prolonged, complaints that a user cannot use the air conditioner when the outdoor fans have the faults are reduced, and the use experience of the user is improved; and a certain time is won for applying and allocating spare parts, and the service quality is improved.
Example two
The present embodiment relates to an air conditioner having a plurality of outdoor units, which are divided into a master outdoor unit M and at least one slave outdoor unit S1,2,3...n(n is a natural number of 1 or more), and the master outdoor unit M and each slave outdoor unit S1,2,3...nCommunication, data sharing, and outdoor unit M, S1,2,3...nAny outdoor unit X has at least one outdoor fan.
In this embodiment, for convenience of description, an example in which one outdoor unit X has one outdoor fan or two outdoor fans will be described.
If the outdoor unit X is provided with one outdoor fan, it is denoted as an outdoor fan a, and if the outdoor unit X is provided with two outdoor fans, it is denoted as an outdoor fan a1 and an outdoor fan a 2.
If an outdoor fan A exists in the outdoor unit X, if the outdoor fan A fails, the outdoor unit X is forbidden to operate; if the outdoor fan A has no fault, the outdoor unit X enters normal operation control.
If two outdoor fans A1 and A2 exist in the outdoor unit X, if the outdoor fans A1 and A2 both have faults, the outdoor unit X is forbidden to operate; if the outdoor fans A1 and A2 have no fault, the outdoor fans A1 and A2 are controlled to normally operate; if one of the outdoor fans a1 and a2 has a fault, the faulty outdoor fan enters emergency operation control, that is, the outdoor fan is prohibited from operating, and the non-faulty outdoor fan enters normal operation control.
The normal operation control described herein is not different from the conventional air conditioner in the manner of controlling the operation of the outdoor fan, and can be known by referring to the manner of controlling the outdoor fan of the conventional air conditioner, for example, the rotation speed of the outdoor fan can be periodically controlled according to the parameters such as the frequency of the outdoor unit compressor, the suction/discharge pressure, and the temperature, and the operation state, the failure information, etc. of the outdoor fan can be monitored in real time.
As shown in fig. 2, the main outdoor unit M in the air conditioner of the present embodiment mainly includes a first fan state obtaining module 21, a first operation control module 22, a first unit state obtaining module 23, and an operation scheduling module 24.
The first fan state acquiring module 21 of the present embodiment is configured to acquire an operation state of the outdoor fan of the main outdoor unit M, where the operation state includes a normal operation state when there is no fault and an emergency operation state when there is a fault.
Specifically, in this embodiment, a first system initialization module 25 is provided, configured to acquire the number of outdoor fans in the main outdoor unit M, and determine the types of units, including a single-fan outdoor unit and a multi-fan outdoor unit.
In this embodiment, a multi-fan outdoor unit is described by taking a dual-fan outdoor unit as an example.
In addition, in order to ensure the control when the outdoor fan enters the emergency operation, the first system initialization module 25 may further initialize a state identification variable for the emergency operation, such as a counting variable for counting the number of outdoor fans in the main outdoor unit M, and a timing variable for timing the emergency operation time when the main outdoor unit M enters the emergency operation.
In this embodiment, the first fan state acquisition module 21 in the main outdoor unit M acquires the operating state of the outdoor fan in the main outdoor unit M as described above based on the determined unit type (single-fan outdoor unit or multi-fan outdoor unit).
In the present embodiment, the operating state of the outdoor fan of the main outdoor unit M can be set as follows.
In the operation process of the main outdoor unit M, once the outdoor fan failure is found, the operation state of the outdoor fan is set to the emergency operation state, and the setting is set by a first fan state setting module (not shown), for example, a manual dial setting.
Of course, other software programs can be adopted to automatically recognize the fault condition of the outdoor fan and set the operation state of the outdoor fan with the fault into the emergency operation state, and the like
The first operation control module 22 of this embodiment is configured to control the outdoor fan of the main outdoor unit M to execute normal operation control or emergency operation control according to the operation state of the outdoor fan of the main outdoor unit M. The emergency operation state corresponds to emergency operation control, and the normal operation state corresponds to normal operation control.
When the operation state of the outdoor fan of the main outdoor unit M is collected as the emergency operation state, the emergency operation control is performed for the outdoor fan. When the operation state of the outdoor fan of the main outdoor unit M is collected to be a normal operation state, normal operation control is performed for the outdoor fan.
For a single fan outdoor unit, there are two cases: 1) when the running state of the outdoor fan A of the main outdoor unit M is a normal running state, the single-fan outdoor unit runs normally; 2) and when the running state of the outdoor fan A of the main outdoor unit M is an emergency running state, the single-fan outdoor unit is forbidden to run.
For a dual fan outdoor unit, there are three cases: 1) when the operation states of the outdoor fans A1 and A2 of the main outdoor unit M are normal operation states, the double-fan outdoor unit operates normally; 2) the operation states of outdoor fans A1 and A2 of the main outdoor unit M are emergency operation states, and the operation of the double-fan outdoor unit is forbidden; 3) the operation state of one of the outdoor fans a1 and a2 of the main outdoor unit M is a normal operation state, and the operation state of the other of the outdoor fans a1 and a2 of the main outdoor unit M is an emergency operation state, the outdoor fan in the emergency operation state enters emergency operation control, and the outdoor fan in the normal operation state shifts to normal operation control.
In this embodiment, the first unit state obtaining module 23 obtains the unit operation parameters according to the operating main outdoor unit M.
The unit operation parameters of the main outdoor unit M here at least include suction and discharge pressure, temperature, operation state of the outdoor fan in the main outdoor unit M, and the like.
The first system initialization module 25 also initializes the unit operation parameters of the main outdoor unit M, such as the pressure and temperature of the compressor of the outdoor unit.
The operation scheduling module 24 of the present embodiment is used for managing all the outdoor units M, S1,2,3...nAnd can be switched to the slave outdoor unit S1,2,3...nAnd sending control information (for example, controlling a slave outdoor unit in emergency operation to prohibit operation).
Referring to fig. 2 again, in the present embodiment, the slave outdoor unit S1,2,3...nAny one of the two modules includes a second fan state obtaining module 31, a second operation control module 32, a second unit state obtaining module 33, a state uploading module 34 and a scheduling compliance module 35.
The second fan status acquiring module 33 of this embodiment is used for acquiring the slave outdoor unit S1,2,3...nThe operation state of each outdoor fan includes a normal operation state when there is no malfunction and an emergency operation state when there is a malfunction.
Specifically, in this embodiment, a second system initialization module 36 is provided for acquiring the slave outdoor unit S1,2,3...nThe number of the middle outdoor fans is configured to determine the types of the units, including a single-fan outdoor unit and a multi-fan outdoor unit.
In this embodiment, a multi-fan outdoor unit is described by taking a dual-fan outdoor unit as an example.
In addition, in order to ensure the control of the outdoor fan during the emergency operation, the second system initialization module 36 may initialize a state identification variable for the emergency operation, such as a counting variable for counting the number of the slave outdoor unit S, a timing variable, and the like1,2,3...nThe number of outdoor fans, and a timing variable for timing the slave outdoor unit S1,2,3...nEnter into emergency operationEmergency running time of the time.
In the present embodiment, the slave outdoor unit S1,2,3...nThe middle-second-fan-state acquisition module 31 acquires the slave outdoor unit S as described above based on the determined unit type (single-fan outdoor unit or multi-fan outdoor unit)1,2,3...nThe running state of the middle outdoor fan.
In the present embodiment, the slave outdoor unit S1,2,3...nThe operation state of the outdoor fan(s) can be set as follows.
In the slave outdoor unit S1,2,3...nDuring operation, once a fault of the outdoor fan is found, the operation state of the outdoor fan is set to an emergency operation state, and the setting is set through a second fan state setting module (not shown), for example, a manual dial setting.
Of course, other software programs can be adopted to automatically recognize the fault condition of the outdoor fan and set the operation state of the outdoor fan with the fault into the emergency operation state, and the like
The second operation control module 32 of the present embodiment is used for controlling the operation of the slave outdoor unit S1,2,3...nThe running state of the middle outdoor fan controls the slave outdoor unit S1,2,3...nThe intermediate outdoor fan performs normal operation control or emergency operation control. The emergency operation state corresponds to emergency operation control, and the normal operation state corresponds to normal operation control.
After collecting the slave outdoor unit S1,2,3...nWhen the operation state of the outdoor fan is the emergency operation state, the outdoor fan is subjected to emergency operation control. In collecting the secondary outdoor unit S1,2,3...nWhen the operation state of the outdoor fan is the normal operation state, the normal operation control is performed for the outdoor fan.
For a single fan outdoor unit, there are two cases: 1) slave outdoor unit S1,2,3...nWhen the running state of the outdoor fan A is a normal running state, the single-fan outdoor unit runs normally; 2) slave outdoor unit S1,2,3...nWhen the operation state of the outdoor fan A is the emergency operation state, the single fan outdoor unit is forbiddenThe group runs.
For a dual fan outdoor unit, there are three cases: 1) slave outdoor unit S1,2,3...nWhen the operation states of the outdoor fans A1 and A2 are normal operation states, the double-fan outdoor unit operates normally; 2) slave outdoor unit S1,2,3...nThe operation states of the outdoor fans A1 and A2 are emergency operation states, and the operation of the double-fan outdoor unit is forbidden; 3) slave outdoor unit S1,2,3...nThe operation state of one of the outdoor fans a1 and a2 is a normal operation state, and the outdoor unit S1,2,3...nThe other of the outdoor fans a1 and a2 is in an emergency operation state, the outdoor fan in the emergency operation state enters emergency operation control, and the outdoor fan in the normal operation state enters normal operation control.
The second unit status obtaining module 33 of this embodiment operates the slave outdoor unit S according to the operation1,2,3...nAnd acquiring unit operation parameters.
Here, the slave outdoor unit S1,2,3...nThe unit operation parameters comprise suction and discharge pressure, temperature and secondary outdoor unit S1,2,3...nOperating state of intermediate outdoor fan, and secondary outdoor unit S1,2,3...nOperation state and abnormality information of the outdoor fan (for example, from the outdoor unit S)1,2,3...nDamage to components of the middle module itself, etc.).
The second system initialization module 36 also initializes the slave outdoor unit S as described above1,2,3...nSuch as the pressure and temperature of the outdoor unit compressor.
Slave outdoor unit S with outdoor fan entering normal operation control1,2,3...n(i.e., the slave outdoor unit S is operated1,2,3...n) And monitoring unit operation parameters such as suction and exhaust pressure, temperature and the like in real time.
For example, when the suction/discharge pressure exceeds the pressure limit or the temperature exceeds the temperature limit, the slave outdoor unit S is described1,2,3...nAnd recording the abnormal information.
The status uploading module 36 of the present embodiment is used for uploading the status of the slave outdoor unit S1,2,3...nThe unit operating parameters and the above abnormal informationAnd then uploaded to the main outdoor unit M.
The operation scheduling module 24 in the master outdoor unit M is configured to upload the slave outdoor unit S according to the unit operation parameters thereof1,2,3...nThe unit running parameters and abnormal information of the outdoor units M, S are monitored in real time1,2,3...nComprehensively evaluating all the outdoor units M, S according to the operation state of the outdoor unit1,2,3...nFor each outdoor unit M, S1,2,3...nCompressor frequency reassignment, i.e. running the scheduling module 24 for each outdoor unit M, S1,2,3...nThe operation state of the outdoor unit M, S, the calculation of the compressor frequency of the whole air conditioning system is completed, and then the command frequency is correspondingly distributed to each outdoor unit M, S1,2,3...nFor the outdoor unit with all outdoor fans set to the emergency operation state, the outdoor unit does not operate any more to ensure the reliability of the system and no longer distributes instruction frequency to the outdoor unit.
The scheduling compliance module 37 of this embodiment is configured to receive control information sent by the master outdoor unit M, receive unified scheduling of the operation scheduling module 24 in the master outdoor unit M, and complete slave outdoor unit S1,2,3...nThe running state of (c) is controlled.
Thereafter, for the outdoor unit having the outdoor fan under normal operation control (i.e., the operating outdoor unit), the main outdoor unit M monitors the unit operation parameters, such as suction/discharge pressure, temperature, etc., in real time through the set first abnormal control module 26, and monitors the outdoor unit operation state in real time.
For example, once the pressure of the suction and exhaust air exceeds the pressure limit or the temperature exceeds the temperature limit, the air conditioning system is stopped to avoid affecting the reliability of the air conditioning system, otherwise, the air conditioner continues to operate and continues to monitor the operation condition of the outdoor unit.
In order to avoid that the related fault of the outdoor fan with fault affects the operation of the system under the condition of the 3) th condition of the double-fan outdoor unit, the system does not monitor the abnormal information of the outdoor fan any more.
In addition, in order to prevent the outdoor units from being in emergency operation for a long time and affecting the system reliability, in the embodiment, emergency operation time thresholds are respectively set for the outdoor units in emergency operation, and when the emergency operation time of at least one outdoor unit in emergency operation exceeds the corresponding emergency operation time threshold, the air conditioning system is stopped to wait for recovering the retry state.
Wherein the outdoor unit entering emergency operation means that the outdoor unit is in the case of 3) of the double fan outdoor unit as described above.
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 (10)

1. An outdoor unit of an air conditioner, comprising at least one outdoor fan, characterized in that the outdoor unit of an air conditioner further comprises:
the fan state acquisition module is used for acquiring the running state of each outdoor fan;
an operation control module that executes normal operation control or emergency operation control according to the operation state;
the unit state acquisition module is used for acquiring unit operation parameters when the air conditioner outdoor unit operates;
controlling the running state of the air conditioner at least according to the unit running parameters;
wherein the emergency operation control is to control the outdoor fan set to an emergency operation state in the air conditioner outdoor unit to stop; the operating state includes an emergency operating state when there is a failure and a normal operating state when there is no failure.
2. The outdoor unit of claim 1, further comprising:
the system initialization module is used for configuring the type of an outdoor unit according to the acquired number of the outdoor fans of the air conditioner outdoor unit and initializing the unit operation parameters and state identification variables for emergency operation;
the fan state identification module is used for identifying the running state of each outdoor fan according to the type of the outdoor unit;
the outdoor unit types include a single-fan outdoor unit and a multi-fan outdoor unit.
3. The outdoor unit of claim 1, wherein the unit operation parameters include at least suction/discharge pressure and temperature of the outdoor unit.
4. The outdoor unit of claim 1, wherein the air conditioner is stopped when an emergency operation time of the outdoor unit exceeds a preset time threshold,
wherein the emergency operation time is as follows: when the air conditioner outdoor unit comprising at least two outdoor fans operates, a part of the outdoor fans in the air conditioner outdoor unit are in emergency operation control, and a part of the outdoor fans are in operation time of the air conditioner outdoor unit under normal operation control.
5. The outdoor unit of claim 1, further comprising:
and the fan state setting module is used for setting the operation state of the outdoor fan to be an emergency operation state when the outdoor fan of the air conditioner outdoor unit fails.
6. An air conditioner comprising a master outdoor unit and at least one slave outdoor unit, wherein the master outdoor unit is in communication connection with each slave outdoor unit, and each of the master outdoor unit and the slave outdoor units comprises at least one outdoor fan, the air conditioner comprising:
the first fan state acquisition module is used for acquiring the running state of each outdoor fan of the main outdoor unit;
a first operation control module that executes normal operation control or emergency operation control according to the operation state;
the first unit state acquisition module is used for acquiring unit operation parameters when the main outdoor unit operates;
the operation scheduling module is used for managing the operation states of all the outdoor units;
the slave outdoor unit includes:
a second fan state obtaining module, configured to obtain an operation state of each outdoor fan of the slave outdoor unit;
a second operation control module that executes normal operation control or emergency operation control according to the operation state;
the second unit state acquisition module is used for acquiring unit operation parameters when the slave outdoor unit operates;
the state uploading module is used for uploading the unit operation parameters of the slave outdoor unit to the master outdoor unit;
the dispatching obeying module is used for receiving control information sent by the main outdoor unit;
controlling the running state of the air conditioner at least according to the unit running parameters of all the outdoor units;
the emergency operation control means controlling the outdoor fan set to an emergency operation state in the master outdoor unit or the slave outdoor unit to stop; the operating state includes an emergency operating state when there is a failure and a normal operating state when there is no failure.
7. The air conditioner as claimed in claim 6, wherein each of the master outdoor unit and the slave outdoor units comprises:
the system initialization module is used for configuring the types of the outdoor units according to the acquired number of the outdoor fans of the corresponding outdoor units, and initializing unit operation parameters and emergency operation state identification variables of the corresponding outdoor units;
the fan state identification module is used for identifying the running state of each outdoor fan according to the type of the outdoor unit;
the outdoor unit types include a single-fan outdoor unit and a multi-fan outdoor unit.
8. The air conditioner of claim 6, wherein the unit operation parameters include at least suction/discharge pressure and temperature of the outdoor unit.
9. The air conditioner of claim 6, wherein the air conditioner is stopped when the emergency operation time of at least one outdoor unit exceeds a corresponding preset time threshold;
wherein the emergency operation time is as follows: when an outdoor unit including at least two outdoor fans operates, the operation time of the outdoor unit is controlled by a part of the outdoor fans under emergency operation control and a part of the outdoor fans under normal operation state control.
10. The air conditioner as claimed in claim 6, wherein the master outdoor unit and each slave outdoor unit each comprise:
and the fan state setting module is used for setting the running state of the outdoor fan to be an emergency running state when the outdoor fan of the corresponding outdoor unit fails.
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