CN106322652A - Multi-split air conditioner system and failure detection method for main flow path valve component of multi-split air conditioner system - Google Patents
Multi-split air conditioner system and failure detection method for main flow path valve component of multi-split air conditioner system Download PDFInfo
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- CN106322652A CN106322652A CN201610695914.3A CN201610695914A CN106322652A CN 106322652 A CN106322652 A CN 106322652A CN 201610695914 A CN201610695914 A CN 201610695914A CN 106322652 A CN106322652 A CN 106322652A
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Abstract
The invention discloses a multi-split air conditioner system and a failure detection method for the main flow path valve component of the multi-split air conditioner system. The multi-split air conditioner system comprises an outdoor unit, a flow division device and multiple indoor units, wherein the flow division device comprises a first heat exchanger, a second heat exchanger and a main flow path valve component; and the main flow path valve component is arranged between the outlet of the first heat exchange flow path of the first heat exchanger and the inlet of the first heat exchange flow path of the second heat exchanger. The method comprises the steps that when the multi-split air conditioner system operates at a pure heating mode, the upstream supercooling degree of the main flow path valve component is acquired, and heating indoor unit capability failure signals are acquired; and whether the main flow path valve component fails or not is determined according to the upstream supercooling degree of the main flow path valve component and the heating indoor unit capability failure signals. By adopting the method, during the operation process of the multi-split air conditioner system, whether the main flow path valve component fails or not is rapidly and effectively determined, and safe and reliable operation of the system is ensured.
Description
Technical field
The present invention relates to air-conditioning technical field, particularly to a kind of multiple on-line system and the fault of primary flow path valve component thereof
Detection method.
Background technology
Multiple on-line system can be freezed simultaneously and heat, but due to system complex, valve body is numerous, not only to have perfect
Control logic carry out application valve body action, and valve body to be ensured can normally work, thus ensures that system can be reliably and with long-term
Run.
Generally, in multiple on-line system, the adapter of indoor set and part flow arrangement needs welded and installed, due to indoor set number of units relatively
Many, corresponding solder joint is the most more, when system is run, it is possible to occurs that welding slag is blocked in the valve body of part flow arrangement, causes valve
Body occurs abnormal, it is also possible to cannot reliably working because the problems such as valve body ageing failure cause valve body fault.Therefore, how to exist
Under conditions of guarantee system is properly functioning, still can detect whether part flow arrangement breaks down, be skill the most urgently to be resolved hurrily
Art problem.
Summary of the invention
It is contemplated that one of technical problem solved the most to a certain extent in correlation technique.
To this end, it is an object of the present invention to propose the fault detect of primary flow path valve component in a kind of multiple on-line system
Method, the method can rapidly and effectively judge whether primary flow path valve component is sent out in multiple on-line system running
It is out of order, it is ensured that security of system reliability service.
Further object is that a kind of multiple on-line system of proposition.
For achieving the above object, primary flow path valve component during one aspect of the present invention embodiment proposes a kind of multiple on-line system
Fault detection method, described multiple on-line system includes off-premises station, part flow arrangement and multiple indoor set, and described part flow arrangement includes
First Heat Exchanger, the second heat exchanger and primary flow path valve component, described primary flow path valve component is arranged on described First Heat Exchanger
The first heat exchange stream outlet and described second heat exchanger the first heat exchange stream entrance between, described primary flow path valve body group
Part includes first throttle element and the first control valve with described first throttle element in parallel, said method comprising the steps of:
When described multiple on-line system is run with pure heating mode, obtain degree of supercooling before the valve of described primary flow path valve component, and obtain
Heat indoor unit capability shortage signal；And according to degree of supercooling before the valve of described primary flow path valve component with described heat indoor set
Scarce capacity signal judges whether described primary flow path valve component breaks down.
The fault detection method of primary flow path valve component in multiple on-line system according to embodiments of the present invention, in multi-connected machine system
When system runs with pure heating mode, obtain degree of supercooling before the valve of primary flow path valve component, and acquisition heats indoor unit capability deficiency
Signal, then, according to degree of supercooling before the valve of primary flow path valve component with heat indoor unit capability shortage signal and judge primary flow path valve
Whether body assembly breaks down, thus in multiple on-line system running, it is possible to rapidly and effectively judge primary flow path valve
Whether body assembly sends fault, it is ensured that security of system reliability service.
According to one embodiment of present invention, described according to degree of supercooling and described system before the valve of described primary flow path valve component
Hot indoor unit capability shortage signal judges whether described primary flow path valve component breaks down, including: if described primary flow path valve
Before the valve of body assembly degree of supercooling less than the first preset value or described in heat indoor unit capability shortage signal=ON, then judge institute
State primary flow path valve component to break down.
According to one embodiment of present invention, after judging that described primary flow path valve component breaks down, also include: control
Make described first control valve to close, and it is constant to control the current aperture of described first throttle element holding；Judge the first Preset Time
In the upstream pressure of described primary flow path valve component whether raise the second preset value, and heat indoor unit capability described in judging whether
Shortage signal=OFF；If the upstream pressure of described primary flow path valve component raises described second in described first Preset Time
Preset value or described in heat indoor unit capability shortage signal=OFF, then judge that described first control valve breaks down.
According to one embodiment of present invention, after judging that described primary flow path valve component breaks down, also include: control
Making described first control valve keeps current state constant, and controls the closedown of described first throttle element；Judge the second Preset Time
In the upstream pressure of described primary flow path valve component whether raise the 3rd preset value, and heat indoor unit capability described in judging whether
Shortage signal=OFF；If the upstream pressure of described primary flow path valve component raises the described 3rd in described second Preset Time
Preset value or described in heat indoor unit capability shortage signal=OFF, then judge described first throttle element failure.
According to one embodiment of present invention, when described multiple on-line system is run with pure heating mode, control described
One restricting element is opened to default minimum aperture, and it is in the completely closed state to control described first control valve.
For achieving the above object, a kind of multiple on-line system that another aspect of the present invention embodiment proposes, including: off-premises station；
Part flow arrangement, described part flow arrangement includes First Heat Exchanger, the second heat exchanger and primary flow path valve component, described primary flow path valve body
Assembly is arranged on the outlet of the first heat exchange stream of described First Heat Exchanger and the first heat exchange stream of described second heat exchanger
Between entrance, described primary flow path valve component includes first throttle element and the first control with described first throttle element in parallel
Valve；Multiple indoor sets；Control module, described control module, for when described multiple on-line system is run with pure heating mode, obtains
Take degree of supercooling before the valve of described primary flow path valve component, and acquisition heats indoor unit capability shortage signal, and according to described master
Before the valve of stream valve component, degree of supercooling and the described indoor unit capability shortage signal that heats judge that described primary flow path valve component is
No break down.
Multiple on-line system according to embodiments of the present invention, control module when multiple on-line system is run with pure heating mode,
Obtain degree of supercooling before the valve of primary flow path valve component, and acquisition heats indoor unit capability shortage signal, then according to primary flow path valve
Degree of supercooling and heat indoor unit capability shortage signal and judge whether primary flow path valve component breaks down before the valve of body assembly, thus
In multiple on-line system running, it is possible to rapidly and effectively judge whether primary flow path valve component sends fault, it is ensured that
Security of system reliability service.
According to one embodiment of present invention, described control module is according to degree of supercooling before the valve of described primary flow path valve component
With described heat indoor unit capability shortage signal judge whether described primary flow path valve component breaks down time, wherein, if institute
Before stating the valve of primary flow path valve component degree of supercooling less than the first preset value or described in heat indoor unit capability shortage signal=
ON, described control module then judges that described primary flow path valve component breaks down.
According to one embodiment of present invention, described control module is judging that described primary flow path valve component breaks down it
After, also control described first control valve and close, and control described first throttle element and keep current aperture constant, and judge the
In one Preset Time, whether the upstream pressure of described primary flow path valve component raises the second preset value, and heats described in judging whether
Indoor unit capability shortage signal=OFF, wherein, if pressed before the valve of described primary flow path valve component in described first Preset Time
Power raise described second preset value or described in heat indoor unit capability shortage signal=OFF, described control module then judges institute
State the first control valve to break down.
According to one embodiment of present invention, described control module is judging that described primary flow path valve component breaks down it
After, also control described first control valve and keep current state constant, and control described first throttle element and close, and judge the
In two Preset Times, whether the upstream pressure of described primary flow path valve component raises the 3rd preset value, and heats described in judging whether
Indoor unit capability shortage signal=OFF, wherein, if pressed before the valve of described primary flow path valve component in described second Preset Time
Power raise described 3rd preset value or described in heat indoor unit capability shortage signal=OFF, then judge described first throttle unit
Part breaks down.
According to one embodiment of present invention, when described multiple on-line system is run with pure heating mode, described control mould
Block controls described first throttle element and opens to default minimum aperture, and controls described first control valve and be in and completely close shape
State.
Accompanying drawing explanation
Fig. 1 is the flow process of the fault detection method of primary flow path valve component in multiple on-line system according to embodiments of the present invention
Figure；And
Fig. 2 is the structural representation of multiple on-line system according to an embodiment of the invention.
Detailed description of the invention
Embodiments of the invention are described below in detail, and the example of described embodiment is shown in the drawings, the most from start to finish
Same or similar label represents same or similar element or has the element of same or like function.Below with reference to attached
The embodiment that figure describes is exemplary, it is intended to is used for explaining the present invention, and is not considered as limiting the invention.
Below with reference to the accompanying drawings multiple on-line system and the event of primary flow path valve component thereof that the embodiment of the present invention proposes are described
Barrier detection method.
Fig. 1 is the flow process of the fault detection method of primary flow path valve component in multiple on-line system according to embodiments of the present invention
Figure.
In an embodiment of the present invention, as in figure 2 it is shown, multiple on-line system includes off-premises station, part flow arrangement and multiple indoor
Machine, part flow arrangement includes First Heat Exchanger, the second heat exchanger and primary flow path valve component, and primary flow path valve component is arranged on first
Between the entrance of the outlet of the first heat exchange stream of heat exchanger and the first heat exchange stream of the second heat exchanger, primary flow path valve component
Including first throttle element and with the first control valve of first throttle element in parallel.
When multiple on-line system is run with pure heating mode, from off-premises station overheated coolant out through the gas-liquid of part flow arrangement
Separator, heat electromagnetic valve after, heat in the indoor set that can need after heat release having, throttle by heating the restricting element of indoor set
After, through the first heat exchange stream entrance second section fluid element heating check valve, the second heat exchanger of part flow arrangement, pass through second section
After fluid element expands, enter part flow arrangement through the second heat exchange stream of the second heat exchanger, the second heat exchange stream of First Heat Exchanger
Low-voltage tube, finally return to off-premises station.Meanwhile, the first throttle element in primary flow path valve component also has relatively small guide vane, and
First control valve is in the completely closed state, to ensure from the coolant of off-premises station entrance part flow arrangement after Super long tube, and part gas
Body is cooled into liquid, it is possible to be directly entered second section fluid element from first throttle element in time, and from heating going out of indoor set
Mouthful coolant converges, return off-premises station after throttling expansion.Thereby may be ensured that entering the coolant heating in indoor set is gas,
Heating heat exchange in indoor set, heat transfer efficiency is higher.
Therefore, when multiple on-line system is run with pure heating mode, the first throttle element in primary flow path valve component will
Open to default minimum aperture, and the first control valve is by the completely closed state.
As it is shown in figure 1, the fault detection method of primary flow path valve component in this multiple on-line system, comprise the following steps:
S1, when multiple on-line system is run with pure heating mode, obtains degree of supercooling before the valve of primary flow path valve component, and obtains
Take and heat indoor unit capability shortage signal.
Wherein, degree of supercooling SCM1=Tps1-Tm1 before the valve of primary flow path valve component, Tps1 is primary flow path valve component
The saturation temperature that upstream pressure Ps1 is corresponding, Tm1 be primary flow path valve component valve before temperature.It addition, when the energy heating indoor set
During power deficiency, heat indoor unit capability shortage signal=ON；When the ability heating indoor set is enough, heat indoor unit capability not
Foot signal=OFF.
S2, according to degree of supercooling before the valve of primary flow path valve component with heat indoor unit capability shortage signal and judge primary flow path valve
Whether body assembly breaks down.
According to one embodiment of present invention, according to degree of supercooling before the valve of primary flow path valve component and heat indoor unit capability
Shortage signal judges whether primary flow path valve component breaks down, including: if degree of supercooling is little before the valve of primary flow path valve component
In the first preset value or heat indoor unit capability shortage signal=ON, then judge that primary flow path valve component breaks down.Its
In, the first preset value can be demarcated according to practical situation, and such as, the first preset value is 0.
Specifically, as in figure 2 it is shown, when multiple on-line system is run with pure heating mode, according to controlling logic, the will be controlled
One restricting element is opened to default minimum aperture, controls the first control valve in the completely closed state simultaneously.Ran in system
Cheng Zhong, detects the upstream pressure Ps1 of primary flow path valve component in real time by pressure transducer, and according to primary flow path valve component
Upstream pressure Ps1 obtains corresponding saturation temperature Tps1, detects primary flow path valve component in real time by temperature sensor simultaneously
Temperature Tm1 before valve, then, calculates degree of supercooling SCM1=Tps1-Tm1 before the valve of primary flow path valve component.Do not occur cold in system
Under conditions of matchmaker's deficiency, if before the valve of primary flow path valve component degree of supercooling SCM1 ＜ 0 or heat indoor unit capability deficiency letter
Number=ON, then illustrating that the cold medium flux through primary flow path valve component is excessive, primary flow path valve component the most really turns down, may
The aperture being first throttle element is excessive, it is also possible to the first control valve does not completely closes, this Times primary flow path valve component event
Barrier.Thus in multiple on-line system running, it is possible to rapidly and effectively judge whether primary flow path valve component sends event
Barrier, and do not affect the properly functioning of system.
According to one embodiment of present invention, after judging that primary flow path valve component breaks down, also include: control the
One control valve is closed, and it is constant to control the current aperture of first throttle element holding；Judge primary flow path valve body in the first Preset Time
Whether the upstream pressure of assembly raises the second preset value, and judges whether to heat indoor unit capability shortage signal=OFF；If the
In one Preset Time, the upstream pressure of primary flow path valve component raises the second preset value or heats indoor unit capability shortage signal
=OFF, then judge that the first control valve breaks down.Wherein, the first Preset Time and the second preset value can enter according to practical situation
Rower is fixed, and such as, the first Preset Time can be 1min, and the second preset value can be 0.2MPa.
Further, after judging that primary flow path valve component breaks down, also include: control the first control valve and keep working as
Front state is constant, and controls the closedown of first throttle element；Judge the upstream pressure of primary flow path valve component in the second Preset Time
Whether raise the 3rd preset value, and judge whether to heat indoor unit capability shortage signal=OFF；If it is main in the second Preset Time
The upstream pressure of stream valve component raises the 3rd preset value or heats indoor unit capability shortage signal=OFF, then judge the
One restricting element breaks down.Wherein, the second Preset Time and the 3rd preset value can be demarcated according to practical situation, such as,
Second Preset Time can be 1min, and the 3rd preset value can be 0.2MPa.
It is to say, when multiple on-line system is run with pure heating mode, first judge primary flow path valve according to decision condition
Whether body assembly breaks down, and then judges that specifically which valve body breaks down further according to decision condition.
After judging that primary flow path valve component breaks down, can first detect whether the first control valve breaks down, this
Time send the first control valve out code, and control first throttle element and keep current aperture constant.If it is main in certain time
The rise of the upstream pressure Ps1 of stream valve component more than the second preset value or heat indoor unit capability shortage signal=
OFF, then illustrate that the first control valve does not performs closing motion according to instruction, report the first control valve fault；Otherwise, the first control valve is just
Often.
Then, control the first control valve and keep current state constant, and send first throttle element out code, with detection
Whether first throttle element occurs therefore normal.If the rise of the upstream pressure Ps1 of primary flow path valve component is big in certain time
In the 3rd preset value or heat indoor unit capability shortage signal=OFF, then explanation first throttle element does not performs according to instruction
Closing motion, reports first throttle element fault；Otherwise, first throttle element is normal.Such that it is able to determining whether out is which
Valve body breaks down.
In sum, the fault detection method of primary flow path valve component in multiple on-line system according to embodiments of the present invention,
When multiple on-line system is run with pure heating mode, obtain degree of supercooling before the valve of primary flow path valve component, and obtain in heating chamber
Function power shortage signal, then, according to degree of supercooling before the valve of primary flow path valve component with heat indoor unit capability shortage signal and sentence
Whether disconnected primary flow path valve component breaks down, thus in multiple on-line system running, it is possible to rapidly and effectively judge
It has whether primary flow path valve component sends fault, it is ensured that security of system reliability service.
Fig. 2 is the structural representation of multiple on-line system according to an embodiment of the invention.As in figure 2 it is shown, this multi-connected machine
System, including: off-premises station 100, part flow arrangement 200, multiple indoor set 300 and control module.
Wherein, part flow arrangement 200 includes First Heat Exchanger the 210, second heat exchanger 220 and primary flow path valve component 230, main
Stream valve component 230 is arranged on the outlet of the first heat exchange stream of First Heat Exchanger 210 and changes with the first of the second heat exchanger 220
Between the entrance of hot flowpath, primary flow path valve component 230 includes first throttle element 231 and in parallel with first throttle element 231
The first control valve 232.
Control module, for when multiple on-line system is run with pure heating mode, obtains the valve of primary flow path valve component 230
Front degree of supercooling, and obtain and heat indoor unit capability shortage signal, and according to degree of supercooling before the valve of primary flow path valve component 230 and
Heat indoor unit capability shortage signal and judge whether primary flow path valve component 230 breaks down.
According to one embodiment of present invention, control module is according to degree of supercooling and system before the valve of primary flow path valve component 230
Hot indoor unit capability shortage signal judges when whether primary flow path valve component 230 breaks down, wherein, if primary flow path valve body group
Before the valve of part 230, degree of supercooling less than the first preset value or heats indoor unit capability shortage signal=ON, and control module then judges
Primary flow path valve component 230 breaks down.
Specifically, as in figure 2 it is shown, when multiple on-line system is run with pure heating mode, from off-premises station 100 out overheated
Coolant through part flow arrangement 200 gas-liquid separator 240, heat electromagnetic valve 250 after, have heat can need indoor set in heat release
After, after heating the restricting element of indoor set and throttling, heat check valve the 260, second heat exchanger 220 through part flow arrangement 200
First heat exchange stream enter second section fluid element 270, by second section fluid element 270 expand after, through the second heat exchanger 220
Second heat exchange stream, the second heat exchange stream of First Heat Exchanger 210 enter the low-voltage tube of part flow arrangement 200, finally return to room
Outer machine 100.Meanwhile, the first throttle element 231 in primary flow path valve component 230 also has relatively small guide vane, and the first control valve 232
In the completely closed state, to ensure to enter the coolant of part flow arrangement 200 after Super long tube from off-premises station 100, portion gas quilt
It is cooled to liquid, it is possible to be directly entered second section fluid element 270 from first throttle element 231 in time, and from heating indoor set
Outlet coolant converges, returns off-premises station 100 after throttling expansion.Thereby may be ensured that entering the coolant heating in indoor set is gas
Body, heat exchange in heating indoor set, heat transfer efficiency is higher.
Therefore, when multiple on-line system is run with pure heating mode, according to controlling logic, control module will control first segment
Fluid element 231 is opened to default minimum aperture, controls the first control valve 232 in the completely closed state simultaneously.Run in system
During, control module detects the upstream pressure Ps1 of primary flow path valve component 230 in real time by pressure transducer, and according to master
The upstream pressure Ps1 of stream valve component 230 obtains corresponding saturation temperature Tps1, is detected in real time by temperature sensor simultaneously
Temperature Tm1 before the valve of primary flow path valve component 230, then, degree of supercooling before the valve of control module calculating primary flow path valve component 230
SCM1=Tps1-Tm1.Under conditions of there is not cold medium shortage in system, if degree of supercooling before the valve of primary flow path valve component 230
SCM1 ＜ 0 or heat indoor unit capability shortage signal=ON, then illustrate the cold medium flux through primary flow path valve component 230
Excessive, primary flow path valve component 230 the most really turns down, it may be possible to the aperture of first throttle element 231 is excessive, it is also possible to the
One control valve 232 does not completely closes, now control module report primary flow path valve component 230 fault.Thus transport in multiple on-line system
During row, it is possible to rapidly and effectively judge whether primary flow path valve component sends fault, and do not affect the normal of system
Run.
According to one embodiment of present invention, control module is after judging that primary flow path valve component 230 breaks down, also
Control the first control valve 232 to close, and control first throttle element 231 and keep current aperture constant, and judge that first presets
In time, whether the upstream pressure of primary flow path valve component 230 raises the second preset value, and judges whether to heat indoor unit capability
Shortage signal=OFF, if in the first Preset Time the upstream pressure of primary flow path valve component 230 raise the second preset value or
Person heats indoor unit capability shortage signal=OFF, and control module then judges that the first control valve 232 breaks down.Wherein, first is pre-
If the time can be 1min, the second preset value can be 0.2MPa.
Further, control module, after judging that primary flow path valve component 230 breaks down, also controls the first control valve
232 keep current states constant, and control first throttle element 231 and close, and judge primary flow path valve in the second Preset Time
Whether the upstream pressure of body assembly 230 raises the 3rd preset value, and judges whether to heat indoor unit capability shortage signal=OFF,
Function in if the upstream pressure of primary flow path valve component 230 raises the 3rd preset value or heating chamber in the second Preset Time
Power shortage signal=OFF, then judge that first throttle element 231 breaks down.Wherein, the second Preset Time can be 1min, the
Three preset values can be 0.2MPa.
It is to say, when multiple on-line system is run with pure heating mode, first control module judges according to decision condition
Whether primary flow path valve component 230 breaks down, and then judges that specifically which valve body breaks down further according to decision condition.
Control module is after judging that primary flow path valve component 230 breaks down, and can first detect the first control valve 232 is
No break down, now send the first control valve out code, and control first throttle element 231 and keep current aperture constant.
If the rise of the upstream pressure Ps1 of primary flow path valve component 230 is more than the second preset value or heating chamber in certain time
Interior function power shortage signal=OFF, then illustrate that the first control valve 232 does not performs closing motion according to instruction, report the first control valve
232 faults；Otherwise, the first control valve 232 is normal.
Then, control the first control valve 232 and keep current state constant, and send first throttle element out code, with
Whether detection first throttle element 231 occurs therefore normal.If the upstream pressure Ps1 of primary flow path valve component 230 in certain time
Rise more than the 3rd preset value or heat indoor unit capability shortage signal=OFF, then explanation first throttle element 231
Do not perform closing motion according to instruction, report first throttle element 231 fault；Otherwise, first throttle element 231 is normal.Thus can
To determine whether out being which valve body breaks down.
Multiple on-line system according to embodiments of the present invention, control module when multiple on-line system is run with pure heating mode,
Obtain degree of supercooling before the valve of primary flow path valve component, and acquisition heats indoor unit capability shortage signal, then according to primary flow path valve
Degree of supercooling and heat indoor unit capability shortage signal and judge whether primary flow path valve component breaks down before the valve of body assembly, thus
In multiple on-line system running, it is possible to rapidly and effectively judge whether primary flow path valve component sends fault, it is ensured that
Security of system reliability service.
In describing the invention, it is to be understood that term " first ", " second " are only used for describing purpose, and can not
It is interpreted as instruction or hint relative importance or the implicit quantity indicating indicated technical characteristic.Thus, define " the
One ", the feature of " second " can express or implicitly include at least one this feature.In describing the invention, " multiple "
It is meant that at least two, such as two, three etc., unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, term " install ", " being connected ", " connection ", " fixing " etc.
Term should be interpreted broadly, and connects for example, it may be fixing, it is also possible to be to removably connect, or integral；Can be that machinery connects
Connect, it is also possible to be electrical connection；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, in can being two elements
The connection in portion or the interaction relationship of two elements, unless otherwise clear and definite restriction.For those of ordinary skill in the art
For, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the description of this specification, reference term " embodiment ", " some embodiments ", " example ", " specifically show
Example " or the description of " some examples " etc. means to combine this embodiment or example describes specific features, structure, material or spy
Point is contained at least one embodiment or the example of the present invention.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.And, the specific features of description, structure, material or feature can be in office
One or more embodiments or example combine in an appropriate manner.Additionally, in the case of the most conflicting, the skill of this area
The feature of the different embodiments described in this specification or example and different embodiment or example can be tied by art personnel
Close and combination.
Although above it has been shown and described that embodiments of the invention, it is to be understood that above-described embodiment is example
Property, it is impossible to being interpreted as limitation of the present invention, those of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, revises, replaces and modification.
Claims (10)
1. the fault detection method of primary flow path valve component in a multiple on-line system, it is characterised in that described multiple on-line system
Including off-premises station, part flow arrangement and multiple indoor set, described part flow arrangement includes First Heat Exchanger, the second heat exchanger and primary flow path
Valve component, described primary flow path valve component is arranged on the outlet and described second of the first heat exchange stream of described First Heat Exchanger
Between the entrance of the first heat exchange stream of heat exchanger, described primary flow path valve component includes first throttle element and with described first
The first control valve that restricting element is in parallel, said method comprising the steps of:
When described multiple on-line system is run with pure heating mode, obtain degree of supercooling before the valve of described primary flow path valve component, and
Acquisition heats indoor unit capability shortage signal；And
Before valve according to described primary flow path valve component, degree of supercooling and the described indoor unit capability shortage signal that heats judge described master
Whether stream valve component breaks down.
2. the fault detection method of primary flow path valve component in multiple on-line system as claimed in claim 1, it is characterised in that institute
Before stating the valve according to described primary flow path valve component, degree of supercooling and the described indoor unit capability shortage signal that heats judge described main flow
Whether road valve component breaks down, including:
If before the valve of described primary flow path valve component degree of supercooling less than the first preset value or described in heat indoor unit capability not
Foot signal=ON, then judge that described primary flow path valve component breaks down.
3. the fault detection method of primary flow path valve component in multiple on-line system as claimed in claim 2, it is characterised in that
After judging that described primary flow path valve component breaks down, also include:
Control described first control valve to close, and it is constant to control the current aperture of described first throttle element holding；
In judging the first Preset Time, whether the upstream pressure of described primary flow path valve component raises the second preset value, and judgement is
Indoor unit capability shortage signal=OFF is heated described in no；
If in described first Preset Time described primary flow path valve component upstream pressure raise described second preset value or
Described heat indoor unit capability shortage signal=OFF, then judge that described first control valve breaks down.
4. the fault detection method of primary flow path valve component in multiple on-line system as claimed in claim 2, it is characterised in that
After judging that described primary flow path valve component breaks down, also include:
Controlling described first control valve keeps current state constant, and controls the closedown of described first throttle element；
In judging the second Preset Time, whether the upstream pressure of described primary flow path valve component raises the 3rd preset value, and judgement is
Indoor unit capability shortage signal=OFF is heated described in no；
If in described second Preset Time described primary flow path valve component upstream pressure raise described 3rd preset value or
Described heat indoor unit capability shortage signal=OFF, then judge described first throttle element failure.
5. the fault detection method of primary flow path valve component in the multiple on-line system as according to any one of claim 1-4, its
Be characterised by, when described multiple on-line system is run with pure heating mode, control described first throttle element open to default
Small guide vane, and it is in the completely closed state to control described first control valve.
6. a multiple on-line system, it is characterised in that including:
Off-premises station；
Part flow arrangement, described part flow arrangement includes First Heat Exchanger, the second heat exchanger and primary flow path valve component, described primary flow path
Valve component is arranged on the outlet of the first heat exchange stream of described First Heat Exchanger and the first heat exchange stream of described second heat exchanger
Between the entrance on road, described primary flow path valve component include first throttle element and with described first throttle element in parallel first
Control valve；
Multiple indoor sets；
Control module, described control module, for when described multiple on-line system is run with pure heating mode, obtains described main flow
Degree of supercooling before the valve of road valve component, and obtain and heat indoor unit capability shortage signal, and according to described primary flow path valve body group
Before the valve of part, degree of supercooling and the described indoor unit capability shortage signal that heats judge whether described primary flow path valve component breaks down.
7. multiple on-line system as claimed in claim 6, it is characterised in that described control module is according to described primary flow path valve body group
Before the valve of part, degree of supercooling and the described indoor unit capability shortage signal that heats judge whether described primary flow path valve component breaks down
Time, wherein,
If before the valve of described primary flow path valve component degree of supercooling less than the first preset value or described in heat indoor unit capability not
Foot signal=ON, described control module then judges that described primary flow path valve component breaks down.
8. multiple on-line system as claimed in claim 7, it is characterised in that described control module is judging described primary flow path valve body
After component failure, also control described first control valve and close, and control the described first throttle element current aperture of holding
Constant, and whether the upstream pressure of described primary flow path valve component raises the second preset value in judging the first Preset Time, and
Indoor unit capability shortage signal=OFF is heated described in judging whether, wherein, if described primary flow path in described first Preset Time
The upstream pressure of valve component raise described second preset value or described in heat indoor unit capability shortage signal=OFF, described
Control module then judges that described first control valve breaks down.
9. multiple on-line system as claimed in claim 7, it is characterised in that described control module is judging described primary flow path valve body
After component failure, also control described first control valve and keep current state constant, and control described first throttle element
Close, and whether the upstream pressure of described primary flow path valve component raises the 3rd preset value in judging the second Preset Time, and
Indoor unit capability shortage signal=OFF is heated described in judging whether, wherein, if described primary flow path in described second Preset Time
The upstream pressure of valve component raise described 3rd preset value or described in heat indoor unit capability shortage signal=OFF, then sentence
Disconnected described first throttle element failure.
10. the multiple on-line system as according to any one of claim 6-9, it is characterised in that in described multiple on-line system with pure
When heating mode runs, described control module controls described first throttle element and opens to default minimum aperture, and controls described
First control valve is in the completely closed state.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111486612A (en) * | 2020-04-29 | 2020-08-04 | 广东美的暖通设备有限公司 | Multi-split air conditioning system, heating valve leakage detection method and device thereof, and storage medium |
| CN111503948A (en) * | 2020-04-29 | 2020-08-07 | 广东美的暖通设备有限公司 | Multi-split air conditioning system, method and device for detecting leakage of refrigeration valve of multi-split air conditioning system and storage medium |
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| CN1139750A (en) * | 1995-03-15 | 1997-01-08 | 株式会社东芝 | Controller for air conditioner |
| CN104748262A (en) * | 2015-03-31 | 2015-07-01 | 广东美的暖通设备有限公司 | Multi-split system |
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| CN106322652B (en) | 2018-11-20 |
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