CN107091517A

CN107091517A - Protection control method, device and the air-conditioner set of air-conditioner set

Info

Publication number: CN107091517A
Application number: CN201710518707.5A
Authority: CN
Inventors: 胡乾龙; 黄章义; 徐美俊; 郭诗迪; 唐育辉; 石伟
Original assignee: 珠海格力电器股份有限公司
Priority date: 2017-06-30
Filing date: 2017-06-30
Publication date: 2017-08-25

Abstract

The invention discloses protection control method, device and the air-conditioner set of a kind of air-conditioner set, it is related to field of air conditioning, method therein includes：The pressure at expulsion of collect and process machine and the pressure of inspiration(Pi) of compressor；The delivery temperature of collect and process machine；Judged whether to meet default air-conditioning protection unlocking condition according to pressure at expulsion, pressure of inspiration(Pi) and delivery temperature；If it is, determining air-conditioning protected mode and based on the control air-conditioner set operation of air-conditioning protected mode.Protection control method, device and the air-conditioner set of the present invention; operation that can be based on corresponding air-conditioning protected mode to air-conditioner set after air-conditioning protection is started is controlled; the load that compressor can be gradually reduced based on pressure at expulsion, pressure of inspiration(Pi), delivery temperature etc. is exported to unit minimum load operation; make protection operation softer; extend the service life of air-conditioner set; the reliability of air-conditioner set, durability are improved, while improving the Experience Degree of user.

Description

Protection control method, device and the air-conditioner set of air-conditioner set

Technical field

The present invention relates to protection control method, device and the sky of air-conditioning technical field, more particularly to a kind of air-conditioner set Adjust unit.

Background technology

Generally have that high pressure crosses that high and low pressure is too low and excessive discharge temperature etc. is asked in the running of air-conditioner set Topic.For example, for geo-source heat-pump air conditioner group, if occurring heat source side high temperature or other operating modes in operation, compressor row The situation of hypertonia is had at gas, there is the risk for burning compressor；If occurring the work using side low-temp low-pressure in operation Condition, the air entry feed liquor for having compressor causes to smash rotor or freezes the risk of heat exchanger；If occurring unit in operation The situation that operating mode is badly run, it may appear that the phenomenon of excessive discharge temperature, has and burns compressor equivalent risk.Above in air-conditioner set Produced problem will have a strong impact on the life-span of unit in running, so air-conditioner set needs high voltage protective, low-voltage variation With the protection of anti-exhaust high temperature.The technical scheme of existing high voltage protective, low-voltage variation and the protection of anti-exhaust high temperature, the control to air-conditioning Mode processed is essentially identical, generally all by the way of hard stop (violence shutdown), and rigidity of the meeting to air-conditioner set is shut down in violence Influence is produced, easily machine lens are impacted, the service life of air-conditioner set is influenceed, the usage experience of user is poor.

The content of the invention

In view of this, the invention solves the problems that a technical problem be to provide a kind of air-conditioner set protection control method, Device and air-conditioner set, can be controlled after starting protection based on corresponding protected mode to the operation of air-conditioner set.

According to an aspect of the present invention there is provided a kind of protection control method of air-conditioner set, including：Collect and process machine The pressure of inspiration(Pi) of pressure at expulsion and compressor；The delivery temperature of collect and process machine；According to the pressure at expulsion, the pressure of inspiration(Pi) Judge whether to meet default air-conditioning protection unlocking condition with the delivery temperature；If it is, determining air-conditioning protected mode simultaneously Based on air-conditioning protected mode control air-conditioner set operation.

Alternatively, the air-conditioning protected mode includes：High voltage protective pattern, low-voltage variation pattern, the protection of anti-exhaust high temperature Pattern；It is described to be included based on air-conditioning protected mode control air-conditioner set operation：Adjust the operating load of compressor；Wherein, Pass through the running frequency for controlling compressor and/or the operating load for the aperture regulation compressor for controlling throttling arrangement.

Alternatively, if it is determined that the pressure at expulsion meets high voltage protective entry condition, then sentence every the first detection duration Whether the pressure at expulsion of breaking meets the first load down condition；If it is, the operating load reduction by first of compressor is adjusted Load, after air-conditioner set runs the first operation duration, if it is determined that the pressure at expulsion meets the first load down condition, then sentences Whether the operating load of disconnected compressor reaches minimum load threshold value；If it is not, then repeating described every the first detection duration Judge whether the pressure at expulsion meets the first load down condition；If it is, after air-conditioner set runs the second operation duration Judge whether the pressure at expulsion meets the first halt condition, if it is, control air-conditioner set is shut down.

Alternatively, if it is determined that the pressure at expulsion is unsatisfactory for the first load down condition or the first shutdown bar Part, then judge whether the pressure at expulsion meets high voltage protective exit criteria, if it is, high voltage protective pattern is exited, if It is no, then judge whether the pressure at expulsion meets the high voltage protective exit criteria every the 3rd operation duration, until determining institute Pressure at expulsion is stated to meet the high voltage protective exit criteria and exit high voltage protective pattern.

Alternatively, the high voltage protective entry condition includes：The pressure at expulsion is more than or equal to high voltage protective and starts pressure Force threshold；The first load down condition includes：The pressure at expulsion is more than or equal to high pressure drop load pressure threshold value；Described One halt condition includes：The pressure at expulsion is more than or equal to high pressure and shuts down pressure threshold；The high voltage protective exit criteria bag Include：The pressure at expulsion exits pressure threshold less than or equal to high voltage protective；Wherein, the high pressure shuts down pressure threshold>It is described High pressure drop load pressure threshold value>The high voltage protective starts pressure threshold>The high voltage protective exits pressure threshold.

Alternatively, it is described to include operating load reduction the first regulation load of compressor：By the running frequency of compressor Reduce the first regulating frequency Δ F1；Wherein, the Δ F1=| (high voltage protective exits pressure threshold described in P1-) * α 1+ Δ p1* γ 1|/100；P1 is the pressure at expulsion, and Δ p1 is variable quantity of the pressure at expulsion in default detection duration interval, and α 1 is First low pressure correction factor, γ 1 is the first high pressure rate of change correction factor.

Alternatively, if it is determined that the pressure of inspiration(Pi) meets low-voltage variation entry condition, then sentence every the second detection duration Whether the pressure of inspiration(Pi) that breaks meets the second load down condition；If it is, the operating load reduction by second of compressor is adjusted Load, after air-conditioner set runs the 4th operation duration, if it is determined that the pressure of inspiration(Pi) meets the second load down condition, Then judge whether the operating load of the compressor reaches minimum load threshold value；If it is not, then repeating described every second Detection duration judges whether the pressure of inspiration(Pi) meets the second load down condition；If it is, being transported in air-conditioner set operation the 5th Judge whether the pressure of inspiration(Pi) meets the second halt condition after row duration, if it is, control air-conditioner set is shut down.

Alternatively, if it is determined that the pressure of inspiration(Pi) is unsatisfactory for the second load down condition or the second shutdown bar Part, then judge whether the pressure of inspiration(Pi) meets low-voltage variation exit criteria, if it is, low-voltage variation pattern is exited, if It is no, then judge whether the pressure of inspiration(Pi) meets low-voltage variation exit criteria every the 6th operation duration, until determining described inhale Atmospheric pressure meets the low-voltage variation exit criteria and exits low-voltage variation pattern.

Alternatively, the low-voltage variation entry condition includes：The pressure of inspiration(Pi) is less than or equal to low-voltage variation and starts pressure Force threshold；The second load down condition includes：The pressure of inspiration(Pi) is less than or equal to low pressure drop load pressure threshold value；Described Two halt conditions include：The pressure of inspiration(Pi) is less than or equal to low voltage closing pressure threshold；The low-voltage variation exit criteria bag Include：The pressure of inspiration(Pi) exits pressure threshold more than or equal to low-voltage variation；Wherein, the low-voltage variation exits pressure threshold> The low-voltage variation starts pressure threshold>The low pressure drop load pressure threshold value>The low voltage closing pressure threshold.

Alternatively, it is described to include operating load reduction the second regulation load of compressor：By the running frequency of compressor Reduce the second regulating frequency Δ F2；Wherein, the Δ F2=| (low-voltage variation exits pressure threshold-P2) * α 2+ Δ p2* γ 2|/100；P2 is the pressure of inspiration(Pi), and Δ p2 is variable quantity of the pressure of inspiration(Pi) in default detection duration interval, and α 2 is Second low pressure correction factor, γ 2 is the second high pressure rate of change correction factor.

Alternatively, if it is determined that the delivery temperature meets anti-exhaust high temperature protection entry condition, then every the 3rd detection Duration judges whether the delivery temperature meets the 3rd load down condition；If it is, by the operating load of compressor reduction by the Three regulation loads, and after air-conditioner set runs the 7th operation duration, if it is determined that the delivery temperature meets the 3rd drop Loading condiction, then judge whether the operating load of the compressor reaches minimum load threshold value；If it is not, then repeating described Judge whether the delivery temperature meets the 3rd load down condition every the 3rd detection duration；If it is, in air-conditioner set fortune Judge whether the delivery temperature meets the 3rd halt condition after the operation duration of row the 8th, if it is, control air-conditioner set stops Machine.

Alternatively, if it is determined that the delivery temperature is unsatisfactory for the 3rd load down condition or the 3rd shutdown article Part, then judge whether the delivery temperature meets anti-exhaust high temperature protection exit criteria, is protected if it is, exiting anti-exhaust high temperature Shield pattern, if it is not, then judging whether the delivery temperature meets the anti-exhaust high temperature protection and move back every the 9th operation duration Go out condition, until determining that the delivery temperature meets the anti-exhaust high temperature protection exit criteria and exits anti-exhaust high temperature protection Pattern.

Alternatively, the anti-exhaust high temperature protection entry condition includes：It is high that the delivery temperature is more than or equal to anti-exhaust Temperature protection start-up temperature threshold value；The 3rd load down condition includes：The delivery temperature is protected more than or equal to anti-exhaust high temperature Protect load down temperature threshold；3rd halt condition includes：The delivery temperature is more than or equal to the protection of anti-exhaust high temperature and stopped Machine temperature threshold；The anti-exhaust high temperature protection exit criteria includes：The delivery temperature is protected less than or equal to anti-exhaust high temperature Shield exits temperature threshold；Wherein, the anti-exhaust high temperature protection shutdown temperature threshold value>The anti-exhaust high temperature protection load down temperature Spend threshold value>The anti-exhaust high temperature protection start-up temperature threshold value>Temperature threshold is exited in the anti-exhaust high temperature protection.

Alternatively, it is described to include the regulation load of operating load reduction the 3rd of compressor：By the running frequency of compressor Reduce the 3rd regulating frequency Δ F3；Wherein, the Δ F3=| ((temperature threshold is exited in anti-exhaust high temperature protection described in T-) * α 3+ Δ T* γ 3)/5 |, T is the delivery temperature, and Δ T is variable quantity of the delivery temperature in default detection duration interval, α 3 be temperature difference correction factor, and γ 3 is rate of temperature change correction factor.

According to another aspect of the present invention there is provided a kind of protection control device of air-conditioner set, including：Pressure acquisition mould Block, pressure at expulsion and the pressure of inspiration(Pi) of compressor for collect and process machine；Temperature collect module, the row for collect and process machine Temperature degree；Control module, is electrically connected with the pressure acquisition module and the temperature collect module, for according to the row respectively Atmospheric pressure, the pressure of inspiration(Pi) and the delivery temperature judge whether that meeting default air-conditioning protects unlocking condition, if it is, Determine air-conditioning protected mode and based on air-conditioning protected mode control air-conditioner set operation.

Alternatively, the pressure acquisition module includes：First pressure sensor, second pressure sensor；First pressure Force snesor and the second pressure sensor are electrically connected with the control module respectively；The first pressure sensor is arranged on Exhaust outlet of compressor, for gathering the pressure at expulsion, the second pressure sensor arrangement is in compressor air suction mouthful, for adopting Collect the pressure of inspiration(Pi).

Alternatively, the temperature collect module includes：Temperature-sensitive bag；The temperature-sensitive bag is electrically connected with the control module；Institute State temperature-sensitive bag and be arranged on exhaust outlet of compressor, for gathering the delivery temperature.

Alternatively, the air-conditioning protected mode includes：High voltage protective pattern, low-voltage variation pattern, the protection of anti-exhaust high temperature Pattern；The control module, which is based on air-conditioning protected mode control air-conditioner set operation, to be included：The operation for adjusting compressor is born Lotus；Wherein, the control module is electrically connected with the compressor and throttling arrangement respectively, by the running frequency for controlling compressor And/or the operating load of the aperture regulation compressor of control throttling arrangement.

Alternatively, the compressor includes：Driven compressor module；The control module and the driven compressor module Electrical connection, the control module sends control signal, the running frequency to adjust compressor to the driven compressor module； The throttling arrangement includes：Electric expansion valve；The control module is electrically connected with the electric expansion valve, the control module to The electric expansion valve sends control signal, the aperture to control the electric expansion valve.

Alternatively, the control module, including：High voltage protective control unit, for if it is determined that the pressure at expulsion is full Sufficient high voltage protective entry condition, then judge whether the pressure at expulsion meets the first load down condition every the first detection duration； If it is, the operating load reduction by first of compressor is adjusted into load, after air-conditioner set runs the first operation duration, if Determine that the pressure at expulsion meets the first load down condition, then judge whether the operating load of compressor reaches minimum load threshold Value；If it is not, then judging whether the pressure at expulsion meets the first load down bar every the first detection duration described in repeating Part；If it is, judge whether the pressure at expulsion meets the first halt condition after air-conditioner set runs the second operation duration, If it is, control air-conditioner set is shut down.

Alternatively, the high voltage protective control unit, is additionally operable to if it is determined that the pressure at expulsion is unsatisfactory for described first Load down condition or first halt condition, then judge whether the pressure at expulsion meets high voltage protective exit criteria, if It is then to exit high voltage protective pattern, if it is not, then judging whether the pressure at expulsion meets the height every the 3rd operation duration Pressure protection exit criteria, until determining that the pressure at expulsion meets the high voltage protective exit criteria and exits high voltage protective mould Formula.

Alternatively, the running frequency of compressor is reduced the first regulating frequency Δ F1 by the high voltage protective control unit；Its In, the Δ F1=| (high voltage protective exits pressure threshold described in P1-) * α 1+ Δ p1* γ 1 |/100；P1 is the exhaust pressure Power, Δ p1 is variable quantity of the pressure at expulsion in default detection duration interval, and α 1 is the first low pressure correction factor, γ 1 For the first high pressure rate of change correction factor.

Alternatively, the control module, including：Low-voltage variation control unit, for if it is determined that the pressure of inspiration(Pi) is full Sufficient low-voltage variation entry condition, then judge whether the pressure of inspiration(Pi) meets the second load down condition every the second detection duration； If it is, the operating load reduction by second of compressor is adjusted into load, after air-conditioner set runs the 4th operation duration, if Determine that the pressure of inspiration(Pi) meets the second load down condition, then judge the compressor operating load whether reach it is minimum Load threshold value；If it is not, then judging whether the pressure of inspiration(Pi) meets the second drop every the second detection duration described in repeating Loading condiction；If it is, judging whether the pressure of inspiration(Pi) meets second and stop after air-conditioner set runs the 5th operation duration Machine condition, if it is, control air-conditioner set is shut down.

Alternatively, the low-voltage variation control unit, is additionally operable to if it is determined that the pressure of inspiration(Pi) is unsatisfactory for described second Load down condition or second halt condition, then judge whether the pressure of inspiration(Pi) meets low-voltage variation exit criteria, if It is then to exit low-voltage variation pattern, if it is not, then judging whether the pressure of inspiration(Pi) meets low pressure and protect every the 6th operation duration Exit criteria is protected, until determining that the pressure of inspiration(Pi) meets the low-voltage variation exit criteria and exits low-voltage variation pattern.

Alternatively, the running frequency of compressor is reduced the second regulating frequency Δ F2 by the low-voltage variation control unit；Its In, the Δ F2=| (low-voltage variation exits pressure threshold-P2) * α 2+ Δ p2* γ 2 |/100；P2 is the pressure of inspiration(Pi) Power, Δ p2 is variable quantity of the pressure of inspiration(Pi) in default detection duration interval, and α 2 is the second low pressure correction factor, γ 2 For the second high pressure rate of change correction factor.

Alternatively, the control module, including：Anti- exhaust high temperature protection location, for if it is determined that the delivery temperature Anti- exhaust high temperature protection entry condition is met, then it is negative to judge whether the delivery temperature meets the 3rd drop every the 3rd detection duration Lotus condition；If it is, the operating load reduction the 3rd of compressor is adjusted into load, and when air-conditioner set operation the 7th is run After length, if it is determined that the delivery temperature meets the 3rd load down condition, then judge the operating load of the compressor and be It is no to reach minimum load threshold value；If it is not, then whether judging the delivery temperature every the 3rd detection duration described in repeating Meet the 3rd load down condition；If it is, whether judging the delivery temperature after air-conditioner set runs the 8th operation duration The 3rd halt condition is met, if it is, control air-conditioner set is shut down.

Alternatively, the anti-exhaust high temperature protection location, is additionally operable to if it is determined that the delivery temperature is unsatisfactory for described Three load down conditions or the 3rd halt condition, then judge whether the delivery temperature meets anti-exhaust high temperature protection and exit bar Part, if it is, anti-exhaust high temperature protected mode is exited, if it is not, then judging the delivery temperature every the 9th operation duration Whether the anti-exhaust high temperature protection exit criteria is met, until determining that the delivery temperature meets the anti-exhaust high temperature protection Exit criteria simultaneously exits anti-exhaust high temperature protected mode.

Alternatively, the running frequency of compressor is reduced the 3rd regulating frequency Δ F3 by the anti-exhaust high temperature protection location； Wherein, the Δ F3=| ((temperature threshold is exited in anti-exhaust high temperature protection described in T-) * α 3+ Δ T* γ 3)/5 |, T is the row Temperature degree, Δ T is variable quantity of the delivery temperature in default detection duration interval, and α 3 is temperature difference correction factor, and γ 3 is Rate of temperature change correction factor.

According to another aspect of the invention there is provided a kind of air-conditioner set, including：The protection control of air-conditioner set as described above Device processed.

Protection control method, device and the air-conditioner set of the air-conditioner set of the present invention, can be with after air-conditioning protection is started Operation based on corresponding air-conditioning protected mode to air-conditioner set is controlled, and can be based on pressure at expulsion, pressure of inspiration(Pi), exhaust The load that temperature etc. gradually reduces compressor is exported to unit minimum load operation, is made protection operation softer, is extended air-conditioning The service life of unit, improves the reliability of air-conditioner set, durability, while improving the Experience Degree of user.

Brief description of the drawings

In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only Some embodiments of the present invention, for those of ordinary skill in the art, without having to pay creative labor, also Other accompanying drawings can be obtained according to these accompanying drawings.

Fig. 1 is the schematic flow sheet of one embodiment of the protection control method of the air-conditioner set according to the present invention；

Fig. 2 is the stream of progress high voltage protective in one embodiment according to the protection control method of air-conditioner set of the invention Journey schematic diagram；

Fig. 3 is the stream of progress low-voltage variation in one embodiment according to the protection control method of air-conditioner set of the invention Journey schematic diagram；

Fig. 4 carries out anti-exhaust high temperature guarantor in one embodiment for the protection control method of the air-conditioner set according to the present invention The schematic flow sheet of shield；

Fig. 5 is the module diagram of one embodiment of the protection control device according to the air-conditioner set of the present invention；

Fig. 6 is that the module annexation of one embodiment of the protection control device according to the air-conditioner set of the present invention is illustrated Figure；

Fig. 7 is that the module of control module in one embodiment according to the protection control device of air-conditioner set of the invention is shown It is intended to.

Embodiment

The present invention is described more fully with reference to the accompanying drawings, wherein illustrating the exemplary embodiment of the present invention.Under The accompanying drawing that face will be combined in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, and shows So, described embodiment is only a part of embodiment of the invention, rather than whole embodiments.Based on the reality in the present invention Example is applied, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made all belongs to In the scope of protection of the invention.Many descriptions are carried out to technical scheme with reference to each figure and embodiment.

" first ", " second " hereinafter etc. is only used for distinguishing in description, not other special implications.

Fig. 1 is the schematic flow sheet of one embodiment of the protection control method of the air-conditioner set according to the present invention, such as Fig. 1 It is shown：

Step 101, the pressure of inspiration(Pi) of the pressure at expulsion of collect and process machine and compressor.

Step 102, the delivery temperature of collect and process machine.

Step 103, judge whether that meeting default air-conditioning protection opens according to pressure at expulsion, pressure of inspiration(Pi) and delivery temperature Condition.Air-conditioning protection unlocking condition can include the entry condition of a variety of protected modes.

Step 104, if it is, determining air-conditioning protected mode and based on the control air-conditioner set operation of air-conditioning protected mode. Air-conditioning protected mode includes：High voltage protective pattern, low-voltage variation pattern, anti-exhaust high temperature protected mode etc..

Air-conditioner set can be to be a variety of, for example, geothermal heat pump air-conditioner pedestal etc..Air-conditioning is controlled based on air-conditioning protected mode Unit operation includes：Adjust operating load of compressor etc..Compressor can be frequency-changeable compressor, by the fortune for controlling compressor The operating load of the aperture regulation compressor of line frequency and/or control throttling arrangement.Can adjust in real time compressor frequency signal, Electronic expansion valve signal etc., the running status even running to control air-conditioner set.

Fig. 2 is the stream of progress high voltage protective in one embodiment according to the protection control method of air-conditioner set of the invention Journey schematic diagram, as shown in Figure 2：

Step 201, judge whether pressure at expulsion meets high voltage protective entry condition, if it is, into step 203, such as It is really no, then into step 202.

Step 202, air-conditioner set is normally run.

Step 203, if it is determined that pressure at expulsion meets high voltage protective entry condition, then into high voltage protective pattern.

Step 204, judge whether pressure at expulsion meets the first load down condition every the first detection duration, if it is, Into step 205, if it is not, then into step 211.First detection duration can be 1-20s, for example, 6 seconds.

Step 205, the operating load reduction by first of compressor is adjusted into load.

Step 206, after air-conditioner set runs the first operation duration, judge whether pressure at expulsion meets the first load down bar Part, if it is, into step 207, if it is not, then into step 214.Can be 1-40s, for example, 10 during the first operation Second.

Step 207, judge whether the operating load of compressor reaches minimum load threshold value, the running frequency of such as compressor Low-limit frequency threshold value is reached, if it is, into step 208, if it is not, then return to step 204, is repeated every the first inspection Survey duration and judge whether pressure at expulsion meets the first load down condition.

Step 208, air-conditioner set is with the operation duration of minimum load operation second.Second operation duration can be 2 minutes etc..

Step 209, judge whether pressure at expulsion meets the first halt condition, if it is, into step 210, if not, Then enter step 217.

Step 210, control compressor, electric expansion valve are closed, air-conditioner set shutdown.

Step 211, judge whether pressure at expulsion meets high voltage protective exit criteria, if it is, into step 212, such as It is really no, then into step 213.

Step 212, high voltage protective pattern is exited.

Step 213, unit keeps present situation to run after the 3rd operation duration, and into step 211, repetition judges that pressure at expulsion is It is no to meet high voltage protective exit criteria, until determining that pressure at expulsion meets high voltage protective exit criteria and exits high voltage protective mould Formula.3rd operation duration can be 2 minutes etc..

Step 214, judge whether pressure at expulsion meets high voltage protective exit criteria, if it is, into step 215, such as It is really no, then into step 216.

Step 215, high voltage protective pattern is exited.

Step 216, unit keeps present situation to run after the 3rd operation duration, and into step 214, repetition judges that pressure at expulsion is It is no to meet high voltage protective exit criteria, until determining that pressure at expulsion meets high voltage protective exit criteria and exits high voltage protective mould Formula.

Step 217, judge whether pressure at expulsion meets high voltage protective exit criteria, if it is, into step 218, such as It is really no, then into step 219.

Step 218, high voltage protective pattern is exited.

Step 219, unit keeps present situation to run after the 3rd operation duration, and into step 217, repetition judges that pressure at expulsion is It is no to meet high voltage protective exit criteria, until determining that pressure at expulsion meets high voltage protective exit criteria and exits high voltage protective mould Formula.

High voltage protective entry condition includes：Pressure at expulsion is more than or equal to high voltage protective and starts pressure threshold b1.First drop Loading condiction includes：Pressure at expulsion is more than or equal to high pressure drop load pressure threshold value c1.First halt condition includes：Pressure at expulsion Pressure threshold d1 is shut down more than or equal to high pressure.High voltage protective exit criteria includes：Pressure at expulsion is less than or equal to high voltage protective Exit pressure threshold a1.High pressure shuts down pressure threshold d1>High pressure drop load pressure threshold value c1>High voltage protective starts pressure threshold b1 >High voltage protective exits pressure threshold a1.A1, b1, c1, d1 can be set according to the range of operation of compressor.

The operating load reduction by first of compressor is adjusted into load includes：The running frequency reduction by first of compressor is adjusted Frequency Δ F1.Δ F1=| (P1- high voltage protectives exit pressure threshold a1) * α 1+ Δ p1* γ 1 |/100, wherein, P1 is exhaust pressure Power, Δ p1 is variable quantity of the pressure at expulsion in default detection duration interval.Such as Δ P1=P_t-P_(t-5), then Δ P1 refer to It is variable quantity of the pressure at expulsion in 5 seconds intervals, P_tRefer to the exhaust pressure value of t, P_(t-5)Refer to the exhaust before 5s Pressure value, α 1 is the first low pressure correction factor, and γ 1 is the first high pressure rate of change correction factor, and α 1 can be 0-3, and γ 1 can be 0-2。

Under high voltage protective pattern, the load that machine set compressor is gradually reduced based on pressure at expulsion exports minimum negative to unit Lotus runs, and is run according to operating mode.Make protection operation softer, eliminate high voltage protective violence of the prior art and shut down to unit Rigidity effects, extend air-conditioner set service life, improve air-conditioner set reliability, durability.

Fig. 3 is the stream of progress low-voltage variation in one embodiment according to the protection control method of air-conditioner set of the invention Journey schematic diagram, as shown in Figure 3：

Step 310, judge whether pressure of inspiration(Pi) meets low-voltage variation entry condition, if it is, into step 303, such as It is really no, into step 302.

Step 302, air-conditioner set is normally run.

Step 303, into low-voltage variation pattern.

Step 304, judge whether pressure of inspiration(Pi) meets the second load down condition every the second detection duration, if it is, Into step 305, if it is not, then into step 311.Second detection duration can be 1-15 seconds, for example, 4 seconds.

Step 305, the operating load reduction by second of compressor is adjusted into load.

Step 306, after air-conditioner set runs the 4th operation duration, judge whether pressure of inspiration(Pi) meets the second load down bar Part, if it is, into step 307, if it is not, then into step 314.4th operation duration can be 1-30 seconds, for example, 8 Second.

Step 307, judge whether the operating load of compressor reaches minimum load threshold value, if it is, into step 308, if it is not, then into step 304, repeating and judging whether pressure of inspiration(Pi) meets the second drop and bear every the second detection duration Lotus condition.

Step 308, unit is with the operation duration of minimum load operation the 5th.5th operation duration can be 2 minutes etc..

Step 309, judge whether pressure of inspiration(Pi) meets the second halt condition, if it is, into step 310, if not, Then enter step 317.

Step 310, control compressor, electric expansion valve are closed, air-conditioner set shutdown.

Step 311, judge whether pressure of inspiration(Pi) meets low-voltage variation exit criteria, if it is, into step 312, such as It is really no, then into step 313.

Step 312, low-voltage variation pattern is exited.

Step 313, unit keeps present situation to run after the 6th operation duration into step 311, sentences every the 6th operation duration Whether disconnected pressure of inspiration(Pi) meets low-voltage variation exit criteria, until determining that pressure of inspiration(Pi) meets low-voltage variation exit criteria and exited Low-voltage variation pattern.6th operation duration can be 2 minutes etc..

Step 314, judge whether pressure of inspiration(Pi) meets low-voltage variation exit criteria, if it is, into step 315, such as It is really no, then into step 316.

Step 315, low-voltage variation pattern is exited.

Step 316, unit keeps present situation to run after the 6th operation duration into step 314, sentences every the 6th operation duration Whether disconnected pressure of inspiration(Pi) meets low-voltage variation exit criteria, until determining that pressure of inspiration(Pi) meets low-voltage variation exit criteria and exited Low-voltage variation pattern.

Step 317, judge whether pressure of inspiration(Pi) meets low-voltage variation exit criteria, if it is, into step 318, such as It is really no, then into step 319.

Step 318, low-voltage variation pattern is exited.

Step 319, unit keeps present situation to run after the 6th operation duration into step 317, sentences every the 6th operation duration Whether disconnected pressure of inspiration(Pi) meets low-voltage variation exit criteria, until determining that pressure of inspiration(Pi) meets low-voltage variation exit criteria and exited Low-voltage variation pattern.

Low-voltage variation entry condition includes：Pressure of inspiration(Pi) is less than or equal to low-voltage variation and starts pressure threshold b2.Second drop Loading condiction includes：Pressure of inspiration(Pi) is less than or equal to low pressure drop load pressure threshold value c2.Second halt condition includes：Pressure of inspiration(Pi) Less than or equal to low voltage closing pressure threshold d2.Low-voltage variation exit criteria includes：Pressure of inspiration(Pi) is more than or equal to low-voltage variation Exit pressure threshold a2.Low-voltage variation exits pressure threshold a2>Low-voltage variation starts pressure threshold b2>Low pressure drop load pressure threshold Value c2>Low voltage closing pressure threshold d2.A2, b2, c2, d2 can be set according to compressor operating scope.

The operating load reduction by second of compressor is adjusted into load includes：The running frequency reduction by second of compressor is adjusted Frequency Δ F2.Δ F2=| (low-voltage variation exits pressure threshold a2-P2) * α 2+ Δ p2* γ 2 |/100, wherein, P2 is pressure of inspiration(Pi) Power, Δ p2 is variable quantity of the pressure of inspiration(Pi) in default detection duration interval, and α 2 is the second low pressure correction factor, and γ 2 is the Two high pressure rate of change correction factors.For example, Δ p2=P_t-5-P_t, then Δ P2 refer to pressure of inspiration(Pi) 5 seconds interval in change Amount, P_tRefer to the pressure of inspiration(Pi) force value of t, P_t-5It can be 0-3 to refer to the pressure of inspiration(Pi) force value α 2 before 5s, and γ 2 can be 0-2。

Under low-voltage variation pattern, the load that machine set compressor is gradually reduced based on pressure of inspiration(Pi) exports minimum negative to unit Lotus runs, and is run according to operating mode.Make protection operation softer, eliminate high voltage protective violence of the prior art and shut down to unit Rigidity effects, extend air-conditioner set service life, improve air-conditioner set reliability, durability.

Fig. 4 carries out anti-exhaust high temperature guarantor in one embodiment for the protection control method of the air-conditioner set according to the present invention The schematic flow sheet of shield, as shown in Figure 4：

Step 401, judge whether delivery temperature meets anti-exhaust high temperature protection entry condition, if it is, into step 403, if it is not, then into step 402.

Step 402, air-conditioner set is normally run.

Step 403, into anti-exhaust high temperature protected mode.

Step 404, judge whether delivery temperature meets the 3rd load down condition every the 3rd detection duration, if it is, Into step 405, if it is not, then into step 411.3rd detection duration can be 1-12 seconds, for example, 3 seconds.

Step 405, the operating load reduction the 3rd of compressor is adjusted into load.

Step 406, after air-conditioner set runs the 7th operation duration, judge that delivery temperature meets the 3rd load down condition, If it is, into step 407, if it is not, then into step 414.7th operation duration can be 1-24 seconds, for example, 6 seconds.

Step 407, judge whether the operating load of compressor reaches minimum load threshold value, if it is, into step 408, if it is not, then return to step 404, repeats and judges whether delivery temperature meets the 3rd drop and bear every the 3rd detection duration Lotus condition.

Step 408, air-conditioner set is with the operation duration of minimum load operation the 8th.8th operation duration can be 2 minutes etc..

Step 409, judge whether delivery temperature meets the 3rd halt condition, if it is, into step 410, if not, Then enter step 417.

Step 410, control compressor, electric expansion valve are closed, air-conditioner set shutdown.

Step 411, judge whether delivery temperature meets anti-exhaust high temperature protection exit criteria, if it is, into step 412, if it is not, then into step 413.

Step 412, anti-exhaust high temperature protected mode is exited.

Step 413, unit keeps present situation to run after the 9th operation duration, into step 411, sentences every the 9th operation duration Whether disconnected delivery temperature meets anti-exhaust high temperature protection exit criteria, until determining that delivery temperature meets anti-exhaust high temperature protection and moved back Go out condition and exit anti-exhaust high temperature protected mode.9th operation duration can be 2 minutes etc..

Step 414, judge whether delivery temperature meets anti-exhaust high temperature protection exit criteria, if it is, into step 415, if it is not, then into step 416.

Step 415, anti-exhaust high temperature protected mode is exited.

Step 416, unit keeps present situation to run after the 9th operation duration, into step 414, sentences every the 9th operation duration Whether disconnected delivery temperature meets anti-exhaust high temperature protection exit criteria, until determining that delivery temperature meets anti-exhaust high temperature protection and moved back Go out condition and exit anti-exhaust high temperature protected mode.

Step 417, judge whether delivery temperature meets anti-exhaust high temperature protection exit criteria, if it is, into step 418, if it is not, then into step 419.

Step 418, anti-exhaust high temperature protected mode is exited.

Step 419, unit keeps present situation to run after the 9th operation duration, into step 417, sentences every the 9th operation duration Whether disconnected delivery temperature meets anti-exhaust high temperature protection exit criteria, until determining that delivery temperature meets anti-exhaust high temperature protection and moved back Go out condition and exit anti-exhaust high temperature protected mode.

Anti- exhaust high temperature protection entry condition includes：Delivery temperature is more than or equal to anti-exhaust high temperature and protects start-up temperature threshold Value b3.3rd load down condition includes：Delivery temperature is more than or equal to anti-exhaust high temperature protection load down temperature threshold c3.3rd Halt condition includes：Delivery temperature is more than or equal to anti-exhaust high temperature protection shutdown temperature threshold value d3.Anti- exhaust high temperature protection is moved back Going out condition includes：Delivery temperature is less than or equal to the protection of anti-exhaust high temperature and exits temperature threshold a3.Anti- exhaust high temperature protection is shut down Temperature threshold d3>Anti- exhaust high temperature protection load down temperature threshold c3>Anti- exhaust high temperature protection start-up temperature threshold value b3>Anti- exhaust High temperature protection exits temperature threshold a3.

The operating load reduction the 3rd of compressor is adjusted into load includes：The running frequency reduction the 3rd of compressor is adjusted Frequency Δ F3.Δ F3=| ((temperature threshold a3 is exited in the anti-exhaust high temperature protections of T-) * α 3+ Δ T* γ 3)/5 |, wherein, T is exhaust Temperature, Δ T is variable quantity of the delivery temperature in default detection duration interval, and α 3 is temperature difference correction factor, and γ 3 becomes for temperature Rate correction factor.For example, Δ T=T_t-T_(t-10), Δ T refers to variable quantity of the delivery temperature in 10 seconds, when Tt refers to t The delivery temperature at quarter, T_t-10Delivery temperature before the t 10s for being.α 3 can be 0-3, and γ 3 can be 0-2.

The protection control method of air-conditioner set in above-described embodiment, can set a variety of air-conditioning protected modes, start Operation that can be based on corresponding air-conditioning protected mode to air-conditioner set after air-conditioning protection is controlled, and can be based on exhaust pressure The load that power, pressure of inspiration(Pi), delivery temperature etc. gradually reduce compressor is exported to unit minimum load operation, can be according to operating mode Operation, makes protection operation softer, eliminates rigid shadow of the violence shutdown to unit in air-conditioning protection technique of the prior art Ring, extend the service life of air-conditioner set.

As shown in figure 5, the present invention provides a kind of protection control device of air-conditioner set, including：Control module 51, pressure are adopted Collect module 52, temperature collect module 53 and display module 56.

The pressure at expulsion of the collect and process machine of pressure acquisition module 52 and the pressure of inspiration(Pi) of compressor.Temperature collect module 53 is adopted Collect the delivery temperature of compressor.Control module 51 is electrically connected with pressure acquisition module 52 and temperature collect module 53 respectively, is used for Judged whether to meet default air-conditioning protection unlocking condition according to pressure at expulsion, pressure of inspiration(Pi) and delivery temperature, if it is, really Determine air-conditioning protected mode and based on the control air-conditioner set operation of air-conditioning protected mode.Display module 56 is electrically connected with the control module Connect, display module 56 can be used as information exchange platform, display information and input instruction.

Pressure acquisition module 52 includes：First pressure sensor, second pressure sensor.First pressure sensor and second Pressure sensor is electrically connected with control module 51 respectively, and different pressure has corresponding an electric current or voltage signal.The One pressure sensor is arranged on exhaust outlet of compressor, for gathering pressure at expulsion.Second pressure sensor arrangement is inhaled in compressor Gas port, for gathering pressure of inspiration(Pi).

Temperature collect module 53 includes：Temperature-sensitive bag.Temperature-sensitive bag is electrically connected with control module.Temperature-sensitive bag is arranged on compressor row Gas port, for gathering delivery temperature.By temperature-sensitive bag collecting temperature parameter, electric signal is directly transmitted to control module by thermo-sensitive resistor 51 display corresponding temperatures.Can also temperature in use sensor collection delivery temperature.

Air-conditioning protected mode includes：High voltage protective pattern, low-voltage variation pattern, anti-exhaust high temperature protected mode.Control mould Block 51, which is based on the control air-conditioner set operation of air-conditioning protected mode, to be included：Adjust the operating load of compressor.As shown in fig. 6, control Module 51 is electrically connected with compressor 55 and throttling arrangement 56 respectively, is saved by the running frequency and/or control that control compressor 55 Flow the operating load of the aperture regulation compressor of device 56.

Compressor 55 includes：Driven compressor module.Control module 51 is electrically connected with driven compressor module, control module 51 send control signal, the running frequency to adjust compressor to driven compressor module.Throttling arrangement 56 includes：Electronics is swollen Swollen valve.Control module 51 is electrically connected with electric expansion valve, and control module 51 sends control signal to electric expansion valve, to control The aperture of electric expansion valve.Electric expansion valve is located on unit refrigeration machine pipeline.A.C. contactor 54 is electrically connected with control module, A.C. contactor 54 is arranged between power supply and compressor, the switch letter that A.C. contactor is sent based on control module 51 Number, control the power supply to compressor.

As shown in fig. 7, control module 51 includes：High voltage protective control unit 511, low-voltage variation control unit 512 and anti- Exhaust high temperature protection location 513.

High voltage protective control unit 511 is if it is determined that pressure at expulsion meets high voltage protective entry condition, then every the first inspection Survey duration and judge whether pressure at expulsion meets the first load down condition, if it is, the operating load of compressor is reduced into first Load is adjusted, after air-conditioner set runs the first operation duration, if it is determined that pressure at expulsion meets the first load down condition, then sentences Whether the operating load of disconnected compressor reaches minimum load threshold value；Judge if it is not, then repeating every the first detection duration Whether pressure at expulsion meets the first load down condition；If it is, judging exhaust after air-conditioner set runs the second operation duration Whether pressure meets the first halt condition, if it is, control air-conditioner set is shut down.

High voltage protective control unit 511 is if it is determined that pressure at expulsion is unsatisfactory for the first load down condition or the first shutdown bar Part, then judge whether pressure at expulsion meets high voltage protective exit criteria, if it is, high voltage protective pattern is exited, if it is not, then Judge whether pressure at expulsion meets high voltage protective exit criteria every the 3rd operation duration, until determining that pressure at expulsion meets high pressure Protection exit criteria simultaneously exits high voltage protective pattern.

The running frequency of compressor is reduced the first regulating frequency Δ F1 by high voltage protective control unit 511；Wherein, Δ F1= | (P1- high voltage protectives exit pressure threshold) * α 1+ Δ p1* γ 1 |/100；P1 is pressure at expulsion, and Δ p1 is pressure at expulsion default Detection duration interval in variable quantity, α 1 is the first low pressure correction factor, and γ 1 is the first high pressure rate of change correction factor.

Low-voltage variation control unit 512 is if it is determined that pressure of inspiration(Pi) meets low-voltage variation entry condition, then every the second inspection Survey duration and judge whether pressure of inspiration(Pi) meets the second load down condition；If it is, the operating load of compressor is reduced into second Load is adjusted, after air-conditioner set runs the 4th operation duration, if it is determined that pressure of inspiration(Pi) meets the second load down condition, then sentences Whether the operating load of disconnected compressor reaches minimum load threshold value；Judge if it is not, then repeating every the second detection duration Whether pressure of inspiration(Pi) meets the second load down condition；If it is, judging air-breathing after air-conditioner set runs the 5th operation duration Whether pressure meets the second halt condition, if it is, control air-conditioner set is shut down.

Low-voltage variation control unit 512 is if it is determined that pressure of inspiration(Pi) is unsatisfactory for the second load down condition or the second shutdown bar Part, then judge whether pressure of inspiration(Pi) meets low-voltage variation exit criteria, if it is, low-voltage variation pattern is exited, if it is not, then Judge whether pressure of inspiration(Pi) meets low-voltage variation exit criteria every the 6th operation duration, until determining that pressure of inspiration(Pi) meets low pressure Protection exit criteria simultaneously exits low-voltage variation pattern.

The running frequency of compressor is reduced the second regulating frequency Δ F2 by low-voltage variation control unit 512；Wherein, Δ F2= | (low-voltage variation exits pressure threshold-P2) * α 2+ Δ p2* γ 2 |/100；P2 is pressure of inspiration(Pi), and Δ p2 is pressure of inspiration(Pi) default Detection duration interval in variable quantity, α 2 is the second low pressure correction factor, and γ 2 is the second high pressure rate of change correction factor.

Anti- exhaust high temperature protection location 513 is if it is determined that delivery temperature meets anti-exhaust high temperature protection entry condition, then often Judge whether delivery temperature meets the 3rd load down condition every the 3rd detection duration；If it is, by the operating load of compressor The 3rd regulation load is reduced, and after air-conditioner set runs the 7th operation duration, if it is determined that it is negative that delivery temperature meets the 3rd drop Lotus condition, then judge whether the operating load of compressor reaches minimum load threshold value；If it is not, then repeating every the 3rd inspection Survey duration and judge whether delivery temperature meets the 3rd load down condition；If it is, running the 8th operation duration in air-conditioner set Judge whether delivery temperature meets the 3rd halt condition afterwards, if it is, control air-conditioner set is shut down.

Anti- exhaust high temperature protection location 513 is if it is determined that delivery temperature is unsatisfactory for the 3rd load down condition or the 3rd shutdown article Part, then judge whether delivery temperature meets anti-exhaust high temperature protection exit criteria, if it is, exiting anti-exhaust high temperature protection mould Formula, if it is not, then judging whether delivery temperature meets anti-exhaust high temperature protection exit criteria every the 9th operation duration, until really Determine delivery temperature to meet anti-exhaust high temperature protection exit criteria and exit anti-exhaust high temperature protected mode.

The running frequency of compressor is reduced the 3rd regulating frequency Δ F3 by anti-exhaust high temperature protection location 513；Wherein, Δ F3 =| ((temperature threshold is exited in the anti-exhaust high temperature protections of T-) * α 3+ Δ T* γ 3)/5 |, T is delivery temperature, and Δ T is that delivery temperature exists Variable quantity in default detection duration interval, α 3 is temperature difference correction factor, and γ 3 is rate of temperature change correction factor.

In one embodiment, the present invention provides a kind of air-conditioner set, including the as above air-conditioner set in any embodiment Protection control device.

Protection control method, device and the air-conditioner set of air-conditioner set in above-described embodiment, can set a variety of skies Protected mode is adjusted, operation that can be based on corresponding air-conditioning protected mode to air-conditioner set after air-conditioning protection is started is controlled System, the load that compressor can be gradually reduced based on pressure at expulsion, pressure of inspiration(Pi), delivery temperature etc. is exported to unit minimum load Operation, can run according to operating mode, make protection operation softer, eliminate violence in air-conditioning protection technique of the prior art and stop The rigidity effects of machine-to-machine group, extend the service life of air-conditioner set, improve the reliability of air-conditioner set, and durability is carried simultaneously The Experience Degree of high user.

The method and system of the present invention may be achieved in many ways.For example, can by software, hardware, firmware or Software, hardware, firmware any combinations come realize the present invention method and system.The said sequence of the step of for method is only Order described in detail above is not limited in order to illustrate, the step of method of the invention, is especially said unless otherwise It is bright.In addition, in certain embodiments, the present invention can be also embodied as recording to program in the recording medium, these programs include Machine readable instructions for realizing the method according to the invention.Thus, the present invention also covering storage is used to perform according to this hair The recording medium of the program of bright method.

Description of the invention is provided for the sake of example and description, and is not exhaustively or by the present invention It is limited to disclosed form.Many modifications and variations are obvious for the ordinary skill in the art.Select and retouch State embodiment and be more preferably to illustrate the principle and practical application of the present invention, and one of ordinary skill in the art is managed The solution present invention is so as to design the various embodiments with various modifications suitable for special-purpose.

Claims

1. a kind of protection control method of air-conditioner set, it is characterised in that including：

The pressure at expulsion of collect and process machine and the pressure of inspiration(Pi) of compressor；

The delivery temperature of collect and process machine；

Judge whether that meeting default air-conditioning protection opens according to the pressure at expulsion, the pressure of inspiration(Pi) and the delivery temperature Condition；

If it is, determining air-conditioning protected mode and based on air-conditioning protected mode control air-conditioner set operation.

2. the method as described in claim 1, it is characterised in that the air-conditioning protected mode includes：High voltage protective pattern, low pressure Protected mode, anti-exhaust high temperature protected mode；

It is described to be included based on air-conditioning protected mode control air-conditioner set operation：Adjust the operating load of compressor；Wherein, lead to The operating load of the running frequency for crossing control compressor and/or the aperture regulation compressor for controlling throttling arrangement.

3. method as claimed in claim 2, it is characterised in that also include：

If it is determined that the pressure at expulsion meets high voltage protective entry condition, then the exhaust pressure is judged every the first detection duration Whether power meets the first load down condition；

If it is, the operating load reduction by first of compressor is adjusted into load, after air-conditioner set runs the first operation duration, If it is determined that the pressure at expulsion meets the first load down condition, then judge whether the operating load of compressor reaches minimum load Threshold value；

If it is not, then judging whether the pressure at expulsion meets the first load down bar every the first detection duration described in repeating Part；If it is, judge whether the pressure at expulsion meets the first halt condition after air-conditioner set runs the second operation duration, If it is, control air-conditioner set is shut down.

4. method as claimed in claim 3, it is characterised in that also include：

If it is determined that the pressure at expulsion is unsatisfactory for the first load down condition or first halt condition, then judge described Whether pressure at expulsion meets high voltage protective exit criteria, if it is, high voltage protective pattern is exited, if it is not, then every the 3rd Operation duration judges whether the pressure at expulsion meets the high voltage protective exit criteria, until determining that the pressure at expulsion is met The high voltage protective exit criteria simultaneously exits high voltage protective pattern.

5. method as claimed in claim 4, it is characterised in that

The high voltage protective entry condition includes：The pressure at expulsion is more than or equal to high voltage protective and starts pressure threshold；

The first load down condition includes：The pressure at expulsion is more than or equal to high pressure drop load pressure threshold value；

First halt condition includes：The pressure at expulsion is more than or equal to high pressure and shuts down pressure threshold；

The high voltage protective exit criteria includes：The pressure at expulsion exits pressure threshold less than or equal to high voltage protective；

Wherein, the high pressure shuts down pressure threshold>The high pressure drop load pressure threshold value>The high voltage protective starts pressure threshold >The high voltage protective exits pressure threshold.

6. method as claimed in claim 5, it is characterised in that

It is described to include operating load reduction the first regulation load of compressor：The running frequency reduction by first of compressor is adjusted Frequency Δ F1；

Wherein, the Δ F1=| (high voltage protective exits pressure threshold described in P1-) * α 1+ Δ p1* γ 1 |/100；P1 is the row Atmospheric pressure, Δ p1 is variable quantity of the pressure at expulsion in default detection duration interval, and α 1 is the first low pressure correction factor, γ 1 is the first high pressure rate of change correction factor.

7. method as claimed in claim 2, it is characterised in that also include：

If it is determined that the pressure of inspiration(Pi) meets low-voltage variation entry condition, then the pressure of inspiration(Pi) is judged every the second detection duration Whether power meets the second load down condition；

If it is, the operating load reduction by second of compressor is adjusted into load, after air-conditioner set runs the 4th operation duration, If it is determined that the pressure of inspiration(Pi) meets the second load down condition, then judge whether the operating load of the compressor reaches Minimum load threshold value；

If it is not, then judging whether the pressure of inspiration(Pi) meets the second load down bar every the second detection duration described in repeating Part；If it is, judge whether the pressure of inspiration(Pi) meets the second halt condition after air-conditioner set runs the 5th operation duration, If it is, control air-conditioner set is shut down.

8. method as claimed in claim 7, it is characterised in that also include：

If it is determined that the pressure of inspiration(Pi) is unsatisfactory for the second load down condition or second halt condition, then judge described Whether pressure of inspiration(Pi) meets low-voltage variation exit criteria, if it is, low-voltage variation pattern is exited, if it is not, then every the 6th Operation duration judges whether the pressure of inspiration(Pi) meets low-voltage variation exit criteria, until it is described to determine that the pressure of inspiration(Pi) is met Low-voltage variation exit criteria simultaneously exits low-voltage variation pattern.

9. method as claimed in claim 8, it is characterised in that

The low-voltage variation entry condition includes：The pressure of inspiration(Pi) is less than or equal to low-voltage variation and starts pressure threshold；

The second load down condition includes：The pressure of inspiration(Pi) is less than or equal to low pressure drop load pressure threshold value；

Second halt condition includes：The pressure of inspiration(Pi) is less than or equal to low voltage closing pressure threshold；

The low-voltage variation exit criteria includes：The pressure of inspiration(Pi) exits pressure threshold more than or equal to low-voltage variation；

Wherein, the low-voltage variation exits pressure threshold>The low-voltage variation starts pressure threshold>The low pressure drop load pressure Threshold value>The low voltage closing pressure threshold.

10. method as claimed in claim 9, it is characterised in that

It is described to include operating load reduction the second regulation load of compressor：The running frequency reduction by second of compressor is adjusted Frequency Δ F2；

Wherein, the Δ F2=| (low-voltage variation exits pressure threshold-P2) * α 2+ Δ p2* γ 2 |/100；P2 inhales to be described Atmospheric pressure, Δ p2 is variable quantity of the pressure of inspiration(Pi) in default detection duration interval, and α 2 is the second low pressure correction factor, γ 2 is the second high pressure rate of change correction factor.

11. method as claimed in claim 2, it is characterised in that also include：

If it is determined that the delivery temperature meets anti-exhaust high temperature protection entry condition, then judge described every the 3rd detection duration Whether delivery temperature meets the 3rd load down condition；

If it is, the operating load reduction the 3rd of compressor is adjusted into load, and the 7th operation duration is run in air-conditioner set Afterwards, if it is determined that the delivery temperature meets the 3rd load down condition, then judge the compressor operating load whether Reach minimum load threshold value；

If it is not, then judging whether the delivery temperature meets the 3rd load down article every the 3rd detection duration described in repeating Part；If it is, judge whether the delivery temperature meets the 3rd halt condition after air-conditioner set runs the 8th operation duration, If it is, control air-conditioner set is shut down.

12. method as claimed in claim 11, it is characterised in that also include：

If it is determined that the delivery temperature is unsatisfactory for the 3rd load down condition or the 3rd halt condition, then judge described Whether delivery temperature meets anti-exhaust high temperature protection exit criteria, if it is, anti-exhaust high temperature protected mode is exited, if It is no, then judge whether the delivery temperature meets the anti-exhaust high temperature protection exit criteria every the 9th operation duration, until Determine that the delivery temperature meets the anti-exhaust high temperature protection exit criteria and exits anti-exhaust high temperature protected mode.

13. method as claimed in claim 12, it is characterised in that also include：

The anti-exhaust high temperature protection entry condition includes：The delivery temperature is more than or equal to the protection of anti-exhaust high temperature and starts temperature Spend threshold value；

The 3rd load down condition includes：The delivery temperature is more than or equal to anti-exhaust high temperature and protects load down temperature threshold Value；

3rd halt condition includes：The delivery temperature is more than or equal to anti-exhaust high temperature and protects shutdown temperature threshold value；

The anti-exhaust high temperature protection exit criteria includes：The delivery temperature is less than or equal to the protection of anti-exhaust high temperature and exits temperature Spend threshold value；

Wherein, the anti-exhaust high temperature protection shutdown temperature threshold value>The anti-exhaust high temperature protection load down temperature threshold>It is described Anti- exhaust high temperature protects start-up temperature threshold value>Temperature threshold is exited in the anti-exhaust high temperature protection.

14. method as claimed in claim 13, it is characterised in that

It is described to include the regulation load of operating load reduction the 3rd of compressor：The running frequency reduction the 3rd of compressor is adjusted Frequency Δ F3；

Wherein, the Δ F3=| ((temperature threshold is exited in anti-exhaust high temperature protection described in T-) * α 3+ Δ T* γ 3)/5 |, T is institute Delivery temperature is stated, Δ T is variable quantity of the delivery temperature in default detection duration interval, and α 3 is temperature difference correction factor, γ 3 is rate of temperature change correction factor.

15. a kind of protection control device of air-conditioner set, it is characterised in that including：

Pressure acquisition module, pressure at expulsion and the pressure of inspiration(Pi) of compressor for collect and process machine；

Temperature collect module, the delivery temperature for collect and process machine；

Control module, is electrically connected with the pressure acquisition module and the temperature collect module respectively, for according to the exhaust Pressure, the pressure of inspiration(Pi) and the delivery temperature judge whether to meet default air-conditioning protection unlocking condition, if it is, really Determine air-conditioning protected mode and based on air-conditioning protected mode control air-conditioner set operation.

16. device as claimed in claim 15, it is characterised in that

The pressure acquisition module includes：First pressure sensor, second pressure sensor；The first pressure sensor and institute Second pressure sensor is stated to electrically connect with the control module respectively；

The first pressure sensor is arranged on exhaust outlet of compressor, and for gathering the pressure at expulsion, the second pressure is passed Sensor is arranged in compressor air suction mouthful, for gathering the pressure of inspiration(Pi).

17. device as claimed in claim 15, it is characterised in that

The temperature collect module includes：Temperature-sensitive bag；The temperature-sensitive bag is electrically connected with the control module；The temperature-sensitive bag is set In exhaust outlet of compressor, for gathering the delivery temperature.

18. device as claimed in claim 15, it is characterised in that the air-conditioning protected mode includes：It is high voltage protective pattern, low Press protected mode, anti-exhaust high temperature protected mode；

The control module, which is based on air-conditioning protected mode control air-conditioner set operation, to be included：The operation for adjusting compressor is born Lotus；Wherein, the control module is electrically connected with compressor and throttling arrangement respectively, by control compressor running frequency and/ Or the operating load of the aperture regulation compressor of control throttling arrangement.

19. device as claimed in claim 18, it is characterised in that the compressor includes：Driven compressor module；

The control module is electrically connected with the driven compressor module, and the control module is sent out to the driven compressor module Control signal is sent, the running frequency to adjust compressor；

The throttling arrangement includes：Electric expansion valve；The control module is electrically connected with the electric expansion valve, the control mould Block sends control signal, the aperture to control the electric expansion valve to the electric expansion valve.

20. device as claimed in claim 18, it is characterised in that

The control module, including：

High voltage protective control unit, for if it is determined that the pressure at expulsion meets high voltage protective entry condition, then every first Detection duration judges whether the pressure at expulsion meets the first load down condition；If it is, the operating load of compressor is dropped Low first regulation load, after air-conditioner set runs the first operation duration, if it is determined that it is negative that the pressure at expulsion meets the first drop Lotus condition, then judge whether the operating load of compressor reaches minimum load threshold value；If it is not, then repeating described every the One detection duration judges whether the pressure at expulsion meets the first load down condition；If it is, running second in air-conditioner set Judge whether the pressure at expulsion meets the first halt condition after operation duration, if it is, control air-conditioner set is shut down.

21. device as claimed in claim 20, it is characterised in that

The high voltage protective control unit, be additionally operable to if it is determined that the pressure at expulsion be unsatisfactory for the first load down condition or First halt condition, then judge whether the pressure at expulsion meets high voltage protective exit criteria, if it is, exiting high pressure Protected mode, if it is not, then judging whether the pressure at expulsion meets the high voltage protective and exit article every the 3rd operation duration Part, until determining that the pressure at expulsion meets the high voltage protective exit criteria and exits high voltage protective pattern.

22. device as claimed in claim 21, it is characterised in that

23. device as claimed in claim 22, it is characterised in that

The running frequency of compressor is reduced the first regulating frequency Δ F1 by the high voltage protective control unit；Wherein, the Δ F1 =| (high voltage protective exits pressure threshold described in P1-) * α 1+ Δ p1* γ 1 |/100；P1 is the pressure at expulsion, and Δ p1 is described Variable quantity of the pressure at expulsion in default detection duration interval, α 1 is the first low pressure correction factor, and γ 1 changes for the first high pressure Rate correction factor.

24. device as claimed in claim 18, it is characterised in that

The control module, including：

Low-voltage variation control unit, for if it is determined that the pressure of inspiration(Pi) meets low-voltage variation entry condition, then every second Detection duration judges whether the pressure of inspiration(Pi) meets the second load down condition；If it is, the operating load of compressor is dropped Low second regulation load, after air-conditioner set runs the 4th operation duration, if it is determined that the pressure of inspiration(Pi) meets described second Load down condition, then judge whether the operating load of the compressor reaches minimum load threshold value；If it is not, then repeating institute State and judge whether the pressure of inspiration(Pi) meets the second load down condition every the second detection duration；If it is, in air-conditioner set Judge whether the pressure of inspiration(Pi) meets the second halt condition after running the 5th operation duration, if it is, control air-conditioner set Shut down.

25. device as claimed in claim 24, it is characterised in that

The low-voltage variation control unit, be additionally operable to if it is determined that the pressure of inspiration(Pi) be unsatisfactory for the second load down condition or Second halt condition, then judge whether the pressure of inspiration(Pi) meets low-voltage variation exit criteria, if it is, exiting low pressure Protected mode, if it is not, then judging whether the pressure of inspiration(Pi) meets low-voltage variation exit criteria every the 6th operation duration, directly To determining that the pressure of inspiration(Pi) meets the low-voltage variation exit criteria and exit low-voltage variation pattern.

26. device as claimed in claim 25, it is characterised in that

27. device as claimed in claim 26, it is characterised in that

The running frequency of compressor is reduced the second regulating frequency Δ F2 by the low-voltage variation control unit；Wherein, the Δ F2 =| (low-voltage variation exits pressure threshold-P2) * α 2+ Δ p2* γ 2 |/100；P2 is the pressure of inspiration(Pi), and Δ p2 is described Variable quantity of the pressure of inspiration(Pi) in default detection duration interval, α 2 is the second low pressure correction factor, and γ 2 changes for the second high pressure Rate correction factor.

28. device as claimed in claim 18, it is characterised in that

The control module, including：

Anti- exhaust high temperature protection location, for if it is determined that the delivery temperature meets anti-exhaust high temperature protection entry condition, then Judge whether the delivery temperature meets the 3rd load down condition every the 3rd detection duration；If it is, by the fortune of compressor Row load reduction the 3rd adjusts load, and after air-conditioner set runs the 7th operation duration, if it is determined that the delivery temperature expires Foot the 3rd load down condition, then judge whether the operating load of the compressor reaches minimum load threshold value；If it is not, then Judge whether the delivery temperature meets the 3rd load down condition every the 3rd detection duration described in repeating；If it is, Judge whether the delivery temperature meets the 3rd halt condition after air-conditioner set runs the 8th operation duration, if it is, control Air-conditioner set processed is shut down.

29. device as claimed in claim 28, it is characterised in that

The anti-exhaust high temperature protection location, is additionally operable to if it is determined that the delivery temperature is unsatisfactory for the 3rd load down condition Or the 3rd halt condition, then judge whether the delivery temperature meets anti-exhaust high temperature protection exit criteria, if it is, Anti- exhaust high temperature protected mode is exited, if it is not, then it is described to judge whether the delivery temperature meets every the 9th operation duration Anti- exhaust high temperature protects exit criteria, until determining that the delivery temperature meets the anti-exhaust high temperature protection exit criteria and moved back Go out anti-exhaust high temperature protected mode.

30. device as claimed in claim 29, it is characterised in that

31. device as claimed in claim 30, it is characterised in that

The running frequency of compressor is reduced the 3rd regulating frequency Δ F3 by the anti-exhaust high temperature protection location；Wherein, the Δ F3=| ((temperature threshold is exited in anti-exhaust high temperature protection described in T-) * α 3+ Δ T* γ 3)/5 |, T is the delivery temperature, and Δ T is Variable quantity of the delivery temperature in default detection duration interval, α 3 is temperature difference correction factor, and γ 3 repaiies for rate of temperature change Positive coefficient.

32. a kind of air-conditioner set, it is characterised in that including：

As above the protection control device of the air-conditioner set described in any one of claim 15 to 31.