CN109751708A - The control method and storage medium of a kind of air conditioner, air conditioner - Google Patents
The control method and storage medium of a kind of air conditioner, air conditioner Download PDFInfo
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- CN109751708A CN109751708A CN201811613623.0A CN201811613623A CN109751708A CN 109751708 A CN109751708 A CN 109751708A CN 201811613623 A CN201811613623 A CN 201811613623A CN 109751708 A CN109751708 A CN 109751708A
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Abstract
The invention proposes a kind of air conditioner, the control method of air conditioner and storage mediums.Wherein, air conditioner includes: pressure acquisition device, is set to the outlet of the indoor set heat exchanger of air conditioner, for acquiring the outlet pressure of indoor set heat exchanger；Control device, for obtain the compressor of air conditioner revolving speed and it is corresponding with revolving speed prestore pressure threshold, and according to outlet pressure and prestore pressure threshold control compressor.Using technical solution of the present invention; it is combined using the outlet pressure in indoor set heat exchanger exit with the current rotating speed of compressor to control compressor operation; compared to the scheme for protecting pressure compared with single threshold value in the related technology; technical solution of the present invention can be realized more to have compressor under different rotating speeds and pointedly control; ensure more effectively to protect compressor; the compressor service life is promoted, air conditioner reliability of operation is promoted.
Description
Technical field
The present invention relates to air-conditioning technical fields, in particular to the control method and storage of a kind of air conditioner, air conditioner
Medium.
Background technique
Air conditioner in the process of running, state generally relatively high all in system pressure, if excessively high in system pressure
When, stop compressor not in time and run and then pressure is caused to continue to rise, it would be possible that will lead to air conditioner fault.The relevant technologies
In, the pressure protection method of air conditioner includes carrying out air conditioner pressure protection using pressure switch, i.e. setting pressure switch, is being pressed
Compressor shutdown is controlled by pressure switch when power is more than a certain threshold value (for example, 4.0MPa or 3.0MPa), i.e., by by system
Method of the pressure compared with single threshold value ensures system pressure in compressor range of operation.But this method is not considered
Compressor rotary speed cannot be adjusted compressor in conjunction with compressor rotary speed, the problem for causing to adjust inaccuracy.
Summary of the invention
The present invention is directed to solve at least one of the technical problems existing in the prior art or related technologies.
For this purpose, one aspect of the present invention is to propose a kind of air conditioner.
Another aspect of the present invention is to propose a kind of control method of air conditioner.
Another aspect of the invention is to propose a kind of computer readable storage medium.
In view of this, according to an aspect of the present invention, it proposes a kind of air conditioners, comprising: pressure acquisition device, setting
In the outlet of the indoor set heat exchanger of air conditioner, for acquiring the outlet pressure of indoor set heat exchanger；Control device, for obtaining
The revolving speed of the compressor of air conditioner and it is corresponding with revolving speed prestore pressure threshold, and according to outlet pressure and prestore pressure threshold
Control compressor.
Air conditioner provided by the invention includes pressure acquisition device and control device, by pressure acquisition device collection room
The outlet pressure is simultaneously sent to control device by the outlet pressure in machine heat exchanger exit, and further, control device obtains pressure
The revolving speed of contracting machine and inquire it is corresponding with the revolving speed prestore pressure threshold, according to outlet pressure and the size pass for prestoring pressure threshold
The operation of system's control compressor.Using technical solution of the present invention, the outlet pressure and pressure in indoor set heat exchanger exit are utilized
The current rotating speed of contracting machine combines to control compressor operation, compared in the related technology by pressure compared with single threshold value and
The scheme protected, technical solution of the present invention can be realized more to have compressor under different rotating speeds and pointedly control
System, it is ensured that compressor is more effectively protected, the compressor service life is promoted, promotes air conditioner reliability of operation.
Above-mentioned air conditioner according to the present invention, can also have following technical characteristic:
In the above-mentioned technical solutions, it is preferable that control device is used for according to outlet pressure and prestores pressure threshold control pressure
It the step of contracting machine, specifically includes: obtaining the operational mode of air conditioner；In the operating mode according to outlet pressure and prestoring pressure threshold
Value control compressor.
In the technical scheme, control device obtains the operational mode of air conditioner, in the different operational mode (example of air conditioner
Such as heating mode, refrigeration mode) under, according to outlet pressure and pressure threshold control compressor is prestored, thus can be directed to different fortune
Row mode realizes effective control to compressor, it is ensured that efficient pressure can be obtained under different operational modes and protect for air conditioner
Shield.
In any of the above-described technical solution, it is preferable that control device is in the operating mode according to outlet pressure and pre-
The step of depositing pressure threshold control compressor, specifically includes: in the case where operational mode is heating mode, relatively and confirming the
One prestores the difference of pressure threshold and outlet pressure less than or equal to the first difference threshold, controls compressor shutdown or reduction turns
Speed.
In the technical scheme, when air conditioner is heating mode, corresponding with the revolving speed of compressor first prestores pressure
The numerical value of threshold value is higher (being greater than 2.0MPa), calculates first and prestores the difference that pressure threshold subtracts outlet pressure, and at this
The revolving speed of control compressor shutdown or reduction compressor when difference is less than or equal to the first difference threshold, to guarantee air conditioner
System pressure no longer rises, and avoids result in air-conditioning failure.
It should be noted that first prestore pressure threshold subtract outlet pressure difference be less than or equal to the first difference threshold
It may include two kinds of situations.The first situation, first prestores pressure threshold less than or equal to outlet pressure, i.e., outlet pressure be more than or
Pressure threshold (the i.e. air-conditioner system pressure of such situation is excessive) is prestored equal to first, first is prestored pressure threshold at this time and is subtracted out
The difference of mouth pressure is less than or equal to 0 (the first difference threshold).Second situation, first, which prestores pressure threshold, is greater than outlet pressure
Power, but first prestore pressure threshold subtract outlet pressure difference be less than or equal to the first difference threshold (the first difference threshold
Greater than 0 but numerical value is smaller), i.e., outlet pressure is less than but will be more than first to prestore pressure threshold.
In any of the above-described technical solution, it is preferable that control device is in the operating mode according to outlet pressure and pre-
The step of depositing pressure threshold control compressor, specifically includes: in the case where operational mode is refrigeration mode, relatively and confirming the
Two differences for prestoring pressure threshold and outlet pressure are less than or equal to the second difference threshold, or relatively and confirm outlet pressure with
The difference that third prestores pressure threshold is less than or equal to third difference threshold, controls compressor shutdown or reduces revolving speed, second is pre-
It deposits pressure threshold and prestores pressure threshold greater than third.
In the technical scheme, corresponding with the revolving speed of compressor to include two and prestore when air conditioner is refrigeration mode
Pressure threshold, i.e., second prestores pressure threshold and third prestores pressure threshold.Calculating second prestores pressure threshold and subtracts outlet pressure
The difference of power, and turn of control compressor shutdown or reduction compressor when the difference is less than or equal to the second difference threshold
Speed；Alternatively, calculating outlet pressure subtracts the difference that third prestores pressure threshold, and it is less than or equal to third difference threshold in the difference
The revolving speed that compressor shutdown or reduction compressor are controlled when value avoids leading to guarantee that the system pressure of air conditioner no longer rises
Cause air-conditioning failure.
It should be noted that the difference for prestoring pressure threshold and outlet pressure second under refrigeration mode is less than or equal to the
The case where controlling compressor shutdown when two difference thresholds or reducing revolving speed, prestores pressure threshold first similar under heating mode
The revolving speed of control compressor shutdown or reduction compressor when being less than or equal to the first difference threshold with the difference of outlet pressure
Situation is to guarantee that outlet pressure does not exceed to prestore pressure threshold, the control when being more than or will be more than to prestore pressure threshold
Compressor shutdown or the revolving speed for reducing compressor.
And it may include two kinds of feelings that the difference that outlet pressure prestores pressure threshold with third, which is less than or equal to third difference threshold,
Condition.The first situation, outlet pressure are less than or equal to third and prestore pressure threshold (such situation is not permit in cooling mode
Perhaps), outlet pressure subtracts third and prestores the difference of pressure threshold less than or equal to 0 (third difference threshold) at this time.Second
Situation, outlet pressure are greater than third and prestore pressure threshold, but outlet pressure, which subtracts third, to be prestored the difference of pressure threshold and be less than
Or being equal to third difference threshold (third difference threshold is greater than 0 but numerical value is smaller), i.e. outlet pressure is not below but will be less than the
Three prestore pressure threshold.
In any of the above-described technical solution, it is preferable that control device is also used to the number and/or note of recording compressed machine shutdown
Record reduces the number of revolving speed, and is greater than or equal to default time in the number that the number of compressor shutdown and/or record reduce revolving speed
In the case where number threshold value, forbid compressor start.
In the technical scheme, it is greater than or equal in the number that the number of compressor shutdown and/or record reduce revolving speed pre-
If in the case where frequency threshold value, forbidding compressor start, user can also be reminded to replace compressor, to avoid the system of air conditioner
Pressure is excessive to lead to air conditioner fault.
According to another aspect of the present invention, a kind of control method of air conditioner is proposed, comprising: obtain the room of air conditioner
The outlet pressure of interior machine heat exchanger, the revolving speed of the compressor of air conditioner and corresponding with revolving speed prestore pressure threshold；According to out
Mouth pressure controls compressor with pressure threshold is prestored.
The control method of air conditioner provided by the invention obtains outlet pressure and the compression in indoor set heat exchanger exit
The revolving speed of machine, and inquire it is corresponding with the revolving speed prestore pressure threshold, according to outlet pressure with prestore pressure threshold size pass
The operation of system's control compressor.Using technical solution of the present invention, the outlet pressure and pressure in indoor set heat exchanger exit are utilized
The current rotating speed of contracting machine combines to control compressor operation, compared in the related technology by pressure compared with single threshold value and
The scheme protected, technical solution of the present invention can be realized more to have compressor under different rotating speeds and pointedly control
System, it is ensured that compressor is more effectively protected, the compressor service life is promoted, promotes air conditioner reliability of operation.
The control method of above-mentioned air conditioner according to the present invention, can also have following technical characteristic:
In the above-mentioned technical solutions, it is preferable that the step of according to outlet pressure and prestoring pressure threshold control compressor, tool
Body includes: the operational mode for obtaining air conditioner；Compressor is controlled with pressure threshold is prestored according to outlet pressure in the operating mode.
In the technical scheme, the operational mode for obtaining air conditioner, the different operational mode of air conditioner (such as heating mould
Formula, refrigeration mode) under, according to outlet pressure and pressure threshold control compressor is prestored, it thus can be real for different operational modes
Now to effective control of compressor, it is ensured that efficient pressure protection can be obtained in air conditioner under different operational modes.
In any of the above-described technical solution, it is preferable that in the operating mode according to outlet pressure and prestoring pressure threshold control
The step of compressor processed, specifically includes: in the case where operational mode is heating mode, relatively and confirming that first prestores pressure threshold
Value and the difference of outlet pressure are less than or equal to the first difference threshold, control compressor shutdown or reduce revolving speed.
In the technical scheme, when air conditioner is heating mode, corresponding with the revolving speed of compressor first prestores pressure
The numerical value of threshold value is higher (being greater than 2.0MPa), calculates first and prestores the difference that pressure threshold subtracts outlet pressure, and at this
The revolving speed of control compressor shutdown or reduction compressor when difference is less than or equal to the first difference threshold, to guarantee air conditioner
System pressure no longer rises, and avoids result in air-conditioning failure.
It should be noted that first prestore pressure threshold subtract outlet pressure difference be less than or equal to the first difference threshold
It may include two kinds of situations.The first situation, first prestores pressure threshold less than or equal to outlet pressure, i.e., outlet pressure be more than or
Pressure threshold (the i.e. air-conditioner system pressure of such situation is excessive) is prestored equal to first, first is prestored pressure threshold at this time and is subtracted out
The difference of mouth pressure is less than or equal to 0 (the first difference threshold).Second situation, first, which prestores pressure threshold, is greater than outlet pressure
Power, but first prestore pressure threshold subtract outlet pressure difference be less than or equal to the first difference threshold (the first difference threshold
Greater than 0 but numerical value is smaller), i.e., outlet pressure is less than but will be more than first to prestore pressure threshold.
In any of the above-described technical solution, it is preferable that in the operating mode according to outlet pressure and prestoring pressure threshold control
The step of compressor processed, specifically includes: in the case where operational mode is refrigeration mode, relatively and confirming that second prestores pressure threshold
Value and the difference of outlet pressure are less than or equal to the second difference threshold, or relatively and confirm that outlet pressure and third prestore pressure
The difference of threshold value is less than or equal to third difference threshold, controls compressor shutdown or reduces revolving speed, and second to prestore pressure threshold big
Pressure threshold is prestored in third.
In the technical scheme, corresponding with the revolving speed of compressor to include two and prestore when air conditioner is refrigeration mode
Pressure threshold, i.e., second prestores pressure threshold and third prestores pressure threshold.Calculating second prestores pressure threshold and subtracts outlet pressure
The difference of power, and turn of control compressor shutdown or reduction compressor when the difference is less than or equal to the second difference threshold
Speed；Alternatively, calculating outlet pressure subtracts the difference that third prestores pressure threshold, and it is less than or equal to third difference threshold in the difference
The revolving speed that compressor shutdown or reduction compressor are controlled when value avoids leading to guarantee that the system pressure of air conditioner no longer rises
Cause air-conditioning failure.
It should be noted that the difference for prestoring pressure threshold and outlet pressure second under refrigeration mode is less than or equal to the
The case where controlling compressor shutdown when two difference thresholds or reducing revolving speed, prestores pressure threshold first similar under heating mode
The revolving speed of control compressor shutdown or reduction compressor when being less than or equal to the first difference threshold with the difference of outlet pressure
Situation is to guarantee that outlet pressure does not exceed to prestore pressure threshold, the control when being more than or will be more than to prestore pressure threshold
Compressor shutdown or the revolving speed for reducing compressor.
And it may include two kinds of feelings that the difference that outlet pressure prestores pressure threshold with third, which is less than or equal to third difference threshold,
Condition.The first situation, outlet pressure are less than or equal to third and prestore pressure threshold (such situation is not permit in cooling mode
Perhaps), outlet pressure subtracts third and prestores the difference of pressure threshold less than or equal to 0 (third difference threshold) at this time.Second
Situation, outlet pressure are greater than third and prestore pressure threshold, but outlet pressure, which subtracts third, to be prestored the difference of pressure threshold and be less than
Or being equal to third difference threshold (third difference threshold is greater than 0 but numerical value is smaller), i.e. outlet pressure is not below but will be less than the
Three prestore pressure threshold.
In any of the above-described technical solution, it is preferable that further include: the number and/or record that recording compressed machine is shut down reduce
The number of revolving speed；It is greater than or equal to preset times threshold value in the number that the number and/or record of compressor shutdown reduce revolving speed
In the case of, forbid compressor start.
In the technical scheme, it is greater than or equal in the number that the number of compressor shutdown and/or record reduce revolving speed pre-
If in the case where frequency threshold value, forbidding compressor start, user can also be reminded to replace compressor, to avoid the system of air conditioner
Pressure is excessive to lead to air conditioner fault.
According to a further aspect of the invention, a kind of computer readable storage medium is proposed, computer is stored thereon with
Program, when computer program is executed by processor the step of the realization such as control method of the air conditioner of any of the above-described technical solution.
Computer readable storage medium provided by the invention is realized when computer program is executed by processor as any of the above-described
The step of control method of the air conditioner of technical solution, therefore the computer readable storage medium includes any of the above-described technical solution
Air conditioner control method whole beneficial effects.
Additional aspect and advantage of the invention will become obviously in following description section, or practice through the invention
Recognize.
Detailed description of the invention
Above-mentioned and/or additional aspect of the invention and advantage will become from the description of the embodiment in conjunction with the following figures
Obviously and it is readily appreciated that, in which:
Fig. 1 shows the schematic block diagram of the air conditioner of one embodiment of the present of invention；
Fig. 2 shows the structural schematic diagrams of the air conditioner of a specific embodiment of the invention；
Fig. 3 shows the flow diagram of the control method of the air conditioner of one embodiment of the present of invention；
Fig. 4 shows the flow diagram of the control method of the air conditioner of another embodiment of the invention；
Fig. 5 shows the flow diagram of the control method of the air conditioner of yet another embodiment of the present invention；
Fig. 6 shows the flow diagram of the pressure protection method of the air conditioner of a specific embodiment of the invention；
Fig. 7 shows the schematic diagram of the compressor range of operation of the air conditioner of a specific embodiment of the invention.
Wherein, the appended drawing reference in Fig. 2 and the corresponding relationship between component names are as follows:
200 compressors, 202 indoor set heat exchangers, 204 first outdoor unit heat exchangers, 206 second outdoor unit heat exchangers, 208
Four-way valve, 210 gas-liquid separators, 212 pressure sensors, 214 high-pressure switch, 216 first distributors, 218 second distribution
Device, 220 third distributors, 222 first shunt capillaries, and 224 second shunt capillaries, and 226 thirds shunt capillary, and 228 the
One filter, 230 second filters, 232 electric expansion valves, 234 mufflers, 236 gas sides pipe, 238 exhaust pipes, 240 electric-controlled boxes,
Sensor at 242 return air.
Specific embodiment
To better understand the objects, features and advantages of the present invention, with reference to the accompanying drawing and specific real
Applying mode, the present invention is further described in detail.It should be noted that in the absence of conflict, implementation of the invention
Feature in example and embodiment can be combined with each other.
In the following description, numerous specific details are set forth in order to facilitate a full understanding of the present invention, still, the present invention may be used also
To be implemented using other than the one described here other modes, therefore, protection scope of the present invention is not limited to following public affairs
The limitation for the specific embodiment opened.
The embodiment of first aspect present invention proposes that a kind of air conditioner, Fig. 1 show the sky of one embodiment of the present of invention
Adjust the schematic block diagram of device 10.Wherein, which includes:
Pressure acquisition device 102 is set to the outlet of the indoor set heat exchanger (not shown in figure 1) of air conditioner 10, is used for
Acquire the outlet pressure of indoor set heat exchanger；
Control device 104, for obtaining the revolving speed of the compressor (not shown in figure 1) of air conditioner 10 and corresponding with revolving speed
Prestore pressure threshold, and according to outlet pressure and prestore pressure threshold control compressor.
Air conditioner 10 provided by the invention includes pressure acquisition device 102 and control device 104, passes through pressure acquisition device
The outlet pressure is simultaneously sent to control device 104 by the outlet pressure in 102 acquisition indoor set heat exchanger exits, further,
Control device 104 obtain compressor revolving speed and inquire it is corresponding with the revolving speed prestore pressure threshold, according to outlet pressure in advance
Deposit the operation of the size relation control compressor of pressure threshold.Using technical solution of the present invention, gone out using indoor set heat exchanger
Outlet pressure at mouthful combines to control compressor operation with the current rotating speed of compressor, compared to will press in the related technology
The scheme that power is protected compared with single threshold value, technical solution of the present invention can be realized under different rotating speeds to compressor
More have and pointedly control, it is ensured that compressor is more effectively protected, the compressor service life is promoted, promotes air conditioner operation
Reliability.
In the above-mentioned technical solutions, it is preferable that control device 104 is used for according to outlet pressure and prestores pressure threshold control
The step of compressor, specifically includes: obtaining the operational mode of air conditioner；In the operating mode according to outlet pressure and prestoring pressure
Threshold value controls compressor.
In this embodiment, control device 104 obtains the operational mode of air conditioner, (such as makes in different operational mode
Heat pattern, refrigeration mode) under, according to outlet pressure and pressure threshold control compressor is prestored, thus can be directed to different operation moulds
Formula realizes effective control to compressor, it is ensured that efficient pressure protection can be obtained in air conditioner under different operational modes.
In any of the above-described technical solution, it is preferable that control device 104 in the operating mode according to outlet pressure and
The step of prestoring pressure threshold control compressor, specifically includes: in the case where operational mode is heating mode, relatively and confirming
First prestores the difference of pressure threshold and outlet pressure less than or equal to the first difference threshold, controls compressor shutdown or reduction turns
Speed.
In this embodiment, when for heating mode, corresponding with the revolving speed of compressor first prestores the number of pressure threshold
Value is higher (being greater than 2.0MPa), calculates first and prestores the difference that pressure threshold subtracts outlet pressure, and is less than in the difference
Or control compressor shutdown when equal to the first difference threshold or reduce the revolving speed of compressor, to guarantee the system pressure of air conditioner
No longer rise, avoids result in air-conditioning failure.
It should be noted that first prestore pressure threshold subtract outlet pressure difference be less than or equal to the first difference threshold
It may include two kinds of situations.The first situation, first prestores pressure threshold less than or equal to outlet pressure, i.e., outlet pressure be more than or
Pressure threshold (the i.e. air-conditioner system pressure of such situation is excessive) is prestored equal to first, first is prestored pressure threshold at this time and is subtracted out
The difference of mouth pressure is less than or equal to 0 (the first difference threshold).For example, outlet pressure is 3.8MPa, the revolving speed of compressor is
24rps, corresponding with 24rps first prestores pressure threshold as 3.5MPa, and the first difference threshold is set as 0MPa, and first is pre- at this time
The difference for depositing pressure threshold and outlet pressure is -0.3MPa, which is less than 0MPa and then controls compressor shutdown or reduce pressure
The revolving speed of contracting machine.
Second situation, first prestores pressure threshold greater than outlet pressure, but first prestores pressure threshold and subtract outlet
The difference of pressure is less than or equal to the first difference threshold (the first difference threshold is greater than 0 but numerical value is smaller), i.e., outlet pressure does not surpass
It crosses but will be more than first to prestore pressure threshold.For example, outlet pressure is 3.991MPa, the revolving speed of compressor is 70rps, with
It is 4.0MPa that 70rps corresponding first, which prestores pressure threshold, and the first difference threshold is set as 0.01MPa, first prestores pressure at this time
Force threshold and the difference of outlet pressure are 0.009MPa, which is less than 0.01MPa and then controls compressor shutdown or reduce pressure
The revolving speed of contracting machine.
If in addition, still occurring first after compressor reduces revolving speed and prestoring pressure threshold and subtract the difference of outlet pressure to be less than
Or be equal to the first difference threshold the case where, can continue reduce revolving speed until revolving speed be zero, compressor shutdown.
In any of the above-described technical solution, it is preferable that control device 104 in the operating mode according to outlet pressure and
The step of prestoring pressure threshold control compressor, specifically includes: in the case where operational mode is refrigeration mode, relatively and confirming
Second difference for prestoring pressure threshold and outlet pressure is less than or equal to the second difference threshold, or relatively and confirms outlet pressure
The difference for prestoring pressure threshold with third is less than or equal to third difference threshold, controls compressor shutdown or reduces revolving speed, and second
It prestores pressure threshold and prestores pressure threshold greater than third.
It is in this embodiment, corresponding with the revolving speed of compressor to include two and prestore pressure threshold when for refrigeration mode,
I.e. second prestores pressure threshold and third prestores pressure threshold.It calculates second and prestores the difference that pressure threshold subtracts outlet pressure,
And the revolving speed of control compressor shutdown or reduction compressor when the difference is less than or equal to the second difference threshold；Alternatively, meter
It calculates outlet pressure and subtracts the difference that third prestores pressure threshold, and the control pressure when the difference is less than or equal to third difference threshold
The revolving speed that compressor was shut down or reduced to contracting machine avoids result in air-conditioning failure to guarantee that the system pressure of air conditioner no longer rises.
It should be noted that the difference for prestoring pressure threshold and outlet pressure second under refrigeration mode is less than or equal to the
The case where controlling compressor shutdown when two difference thresholds or reducing revolving speed, prestores pressure threshold first similar under heating mode
The revolving speed of control compressor shutdown or reduction compressor when being less than or equal to the first difference threshold with the difference of outlet pressure
Situation is to guarantee that outlet pressure does not exceed to prestore pressure threshold, the control when being more than or will be more than to prestore pressure threshold
Compressor shutdown or the revolving speed for reducing compressor.
And it may include two kinds of feelings that the difference that outlet pressure prestores pressure threshold with third, which is less than or equal to third difference threshold,
Condition.The first situation, outlet pressure are less than or equal to third and prestore pressure threshold (such situation is not permit in cooling mode
Perhaps), outlet pressure subtracts third and prestores the difference of pressure threshold less than or equal to 0 (third difference threshold) at this time.For example, going out
Mouth pressure is 0.15MPa, and the revolving speed of compressor is 24rps, and it is 0.2MPa that third corresponding with 24rps, which prestores pressure threshold, the
Three difference thresholds are set as 0MPa, and the difference that outlet pressure and third prestore pressure threshold at this time is -0.05MPa, and the difference is small
Compressor shutdown is then controlled in 0MPa or reduces the revolving speed of compressor.
Second situation, outlet pressure is greater than third and prestores pressure threshold, but outlet pressure subtracts third and prestores pressure
The difference of threshold value is less than or equal to third difference threshold (third difference threshold is greater than 0 but numerical value is smaller), i.e., outlet pressure is not low
In but will be less than third and prestore pressure threshold.For example, outlet pressure is 0.15MPa, the revolving speed of compressor is 70rps, with
It is 0.141MPa that the corresponding third of 70rps, which prestores pressure threshold, and third difference threshold is set as 0.01MPa, at this time outlet pressure
The difference for prestoring pressure threshold with third is 0.009MPa, which is less than 0.01MPa and then controls compressor shutdown or reduction
The revolving speed of compressor.
If in addition, still occurring second after compressor reduces revolving speed and prestoring pressure threshold and subtract the difference of outlet pressure to be less than
Or third is subtracted equal to the second difference threshold or outlet pressure and prestores the difference of pressure threshold less than or equal to third difference threshold
The case where value, can continue reduce revolving speed until revolving speed be zero, compressor shutdown.
In any of the above-described technical solution, it is preferable that control device 104 be also used to recording compressed machine shutdown number and/
Or record reduces the number of revolving speed, and reduces the number of revolving speed more than or equal to pre- in the number of compressor shutdown and/or record
If in the case where frequency threshold value, forbidding compressor start.
In this embodiment, it is greater than or equal in the number that the number of compressor shutdown and/or record reduce revolving speed default
In the case where frequency threshold value, forbid compressor start, user can also be reminded to replace compressor, to avoid the system pressure of air conditioner
Power is excessive to lead to air conditioner fault.
Fig. 2 shows the structural schematic diagrams of the air conditioner of a specific embodiment of the invention.Wherein, the air conditioner packet
It includes:
Compressor 200, indoor set heat exchanger 202, the first outdoor unit heat exchanger 204, the second outdoor unit heat exchanger 206, four
Port valve 208, gas-liquid separator 210, pressure sensor 212, high-pressure switch 214, the first distributor 216, the second distributor
218, third distributor 220, first shunts capillary 222, second and shunts capillary 224, third shunting capillary 226, first
Filter 228, the second filter 230, electric expansion valve 232, muffler 234, gas side pipe 236, exhaust pipe 238, electric-controlled box
240, sensor 242 (being arranged at 240 air duct return air of electric-controlled box) at return air.Machine exchanges heat the configuration of pressure sensor 212 indoors
The outlet of device 202, can in real time or timing detect the outlet pressure of indoor set heat exchanger 202, by comparison outlet pressure and with
The corresponding relationship prestored between pressure threshold of the revolving speed of compressor 200 controls compressor shutdown or reduces turning for compressor
Speed, to realize more high-quality to air conditioner and efficient pressure protection.
The embodiment of second aspect of the present invention, proposes a kind of control method of air conditioner, and Fig. 3 shows of the invention one
The flow diagram of the control method of the air conditioner of embodiment.Wherein, which includes:
Step 302, obtain the outlet pressure of the indoor set heat exchanger of air conditioner, the compressor of air conditioner revolving speed and with
Revolving speed is corresponding to prestore pressure threshold；
Step 304, compressor is controlled with pressure threshold is prestored according to outlet pressure.
The control method of air conditioner provided by the invention obtains outlet pressure and the compression in indoor set heat exchanger exit
The revolving speed of machine, and inquire it is corresponding with the revolving speed prestore pressure threshold, according to outlet pressure with prestore pressure threshold size pass
The operation of system's control compressor.Using technical solution of the present invention, the outlet pressure and pressure in indoor set heat exchanger exit are utilized
The current rotating speed of contracting machine combines to control compressor operation, compared in the related technology by pressure compared with single threshold value and
The scheme protected, technical solution of the present invention can be realized more to have compressor under different rotating speeds and pointedly control
System, it is ensured that compressor is more effectively protected, the compressor service life is promoted, promotes air conditioner reliability of operation.
Fig. 4 shows the flow diagram of the control method of the air conditioner of another embodiment of the invention.Wherein, the control
Method processed includes:
Step 402, obtain the outlet pressure of the indoor set heat exchanger of air conditioner, the compressor of air conditioner revolving speed and with
Revolving speed is corresponding to prestore pressure threshold；
Step 404, the operational mode of air conditioner is obtained；
Step 406, compressor is controlled with pressure threshold is prestored according to outlet pressure in the operating mode.
In this embodiment, the operational mode for obtaining air conditioner, the different operational mode of air conditioner (such as heating mould
Formula, refrigeration mode) under, according to outlet pressure and pressure threshold control compressor is prestored, it thus can be real for different operational modes
Now to effective control of compressor, it is ensured that efficient pressure protection can be obtained in air conditioner under different operational modes.
In one embodiment of the invention, optionally, step 406, in the operating mode according to outlet pressure and prestoring
Pressure threshold controls the step of compressor, specifically includes: in the case where operational mode is heating mode, relatively and confirming first
The difference for prestoring pressure threshold and outlet pressure is less than or equal to the first difference threshold, controls compressor shutdown or reduces revolving speed.
In this embodiment, when air conditioner is heating mode, corresponding with the revolving speed of compressor first prestores pressure threshold
The numerical value of value is higher (being greater than 2.0MPa), calculates first and prestores the difference that pressure threshold subtracts outlet pressure, and in the difference
Value controls compressor shutdown when being less than or equal to the first difference threshold or reduces the revolving speed of compressor, is with guarantee air conditioner
System pressure no longer rises, and avoids result in air-conditioning failure.
It should be noted that first prestore pressure threshold subtract outlet pressure difference be less than or equal to the first difference threshold
It may include two kinds of situations.The first situation, first prestores pressure threshold less than or equal to outlet pressure, i.e., outlet pressure be more than or
Pressure threshold (the i.e. air-conditioner system pressure of such situation is excessive) is prestored equal to first, first is prestored pressure threshold at this time and is subtracted out
The difference of mouth pressure is less than or equal to 0 (the first difference threshold).For example, outlet pressure is 3.8MPa, the revolving speed of compressor is
24rps, corresponding with 24rps first prestores pressure threshold as 3.5MPa, and the first difference threshold is set as 0MPa, and first is pre- at this time
The difference for depositing pressure threshold and outlet pressure is -0.3MPa, which is less than 0MPa and then controls compressor shutdown or reduce pressure
The revolving speed of contracting machine.
Second situation, first prestores pressure threshold greater than outlet pressure, but first prestores pressure threshold and subtract outlet
The difference of pressure is less than or equal to the first difference threshold (the first difference threshold is greater than 0 but numerical value is smaller), i.e., outlet pressure does not surpass
It crosses but will be more than first to prestore pressure threshold.For example, outlet pressure is 3.991MPa, the revolving speed of compressor is 70rps, with
It is 4.0MPa that 70rps corresponding first, which prestores pressure threshold, and the first difference threshold is set as 0.01MPa, first prestores pressure at this time
Force threshold and the difference of outlet pressure are 0.009MPa, which is less than 0.01MPa and then controls compressor shutdown or reduce pressure
The revolving speed of contracting machine.
If in addition, still occurring first after compressor reduces revolving speed and prestoring pressure threshold and subtract the difference of outlet pressure to be less than
Or be equal to the first difference threshold the case where, can continue reduce revolving speed until revolving speed be zero, compressor shutdown.
In one embodiment of the invention, optionally, step 406, in the operating mode according to outlet pressure and prestoring
Pressure threshold controls the step of compressor, specifically includes: in the case where operational mode is refrigeration mode, relatively and confirming second
The difference for prestoring pressure threshold and outlet pressure is less than or equal to the second difference threshold, or relatively and confirms outlet pressure and the
Three differences for prestoring pressure threshold are less than or equal to third difference threshold, control compressor shutdown or reduce revolving speed, second prestores
Pressure threshold is greater than third and prestores pressure threshold.
In this embodiment, corresponding with the revolving speed of compressor to include two and prestore pressure when air conditioner is refrigeration mode
Force threshold, i.e., second prestores pressure threshold and third prestores pressure threshold.Calculating second prestores pressure threshold and subtracts outlet pressure
Difference, and the difference be less than or equal to the second difference threshold when control compressor shutdown or reduce compressor revolving speed；
Alternatively, calculating outlet pressure subtracts the difference that third prestores pressure threshold, and it is less than or equal to third difference threshold in the difference
When control compressor shutdown or reduce compressor revolving speed avoided result in guaranteeing that the system pressure of air conditioner no longer rises
Air-conditioning failure.
It should be noted that the difference for prestoring pressure threshold and outlet pressure second under refrigeration mode is less than or equal to the
The case where controlling compressor shutdown when two difference thresholds or reducing revolving speed, prestores pressure threshold first similar under heating mode
The revolving speed of control compressor shutdown or reduction compressor when being less than or equal to the first difference threshold with the difference of outlet pressure
Situation is to guarantee that outlet pressure does not exceed to prestore pressure threshold, the control when being more than or will be more than to prestore pressure threshold
Compressor shutdown or the revolving speed for reducing compressor.
And it may include two kinds of feelings that the difference that outlet pressure prestores pressure threshold with third, which is less than or equal to third difference threshold,
Condition.The first situation, outlet pressure are less than or equal to third and prestore pressure threshold (such situation is not permit in cooling mode
Perhaps), outlet pressure subtracts third and prestores the difference of pressure threshold less than or equal to 0 (third difference threshold) at this time.For example, going out
Mouth pressure is 0.15MPa, and the revolving speed of compressor is 24rps, and it is 0.2MPa that third corresponding with 24rps, which prestores pressure threshold, the
Three difference thresholds are set as 0MPa, and the difference that outlet pressure and third prestore pressure threshold at this time is -0.05MPa, and the difference is small
Compressor shutdown is then controlled in 0MPa or reduces the revolving speed of compressor.
Second situation, outlet pressure is greater than third and prestores pressure threshold, but outlet pressure subtracts third and prestores pressure
The difference of threshold value is less than or equal to third difference threshold (third difference threshold is greater than 0 but numerical value is smaller), i.e., outlet pressure is not low
In but will be less than third and prestore pressure threshold.For example, outlet pressure is 0.15MPa, the revolving speed of compressor is 70rps, with
It is 0.141MPa that the corresponding third of 70rps, which prestores pressure threshold, and third difference threshold is set as 0.01MPa, at this time outlet pressure
The difference for prestoring pressure threshold with third is 0.009MPa, which is less than 0.01MPa and then controls compressor shutdown or reduction
The revolving speed of compressor.
If in addition, still occurring second after compressor reduces revolving speed and prestoring pressure threshold and subtract the difference of outlet pressure to be less than
Or third is subtracted equal to the second difference threshold or outlet pressure and prestores the difference of pressure threshold less than or equal to third difference threshold
The case where value, can continue reduce revolving speed until revolving speed be zero, compressor shutdown.
Fig. 5 shows the flow diagram of the control method of the air conditioner of yet another embodiment of the present invention.Wherein, the control
Method processed includes:
Step 502, obtain the outlet pressure of the indoor set heat exchanger of air conditioner, the compressor of air conditioner revolving speed and with
Revolving speed is corresponding to prestore pressure threshold；
Step 504, the operational mode of air conditioner is obtained；
Step 506, compressor is controlled with pressure threshold is prestored according to outlet pressure in the operating mode；
Step 508, recording compressed machine is shut down number and/or record reduce the number of revolving speed, and in compressor shutdown
In the case that the number that number and/or record reduce revolving speed is greater than or equal to preset times threshold value, forbid compressor start.
In this embodiment, it is greater than or equal in the number that the number of compressor shutdown and/or record reduce revolving speed default
In the case where frequency threshold value, forbid compressor start, user can also be reminded to replace compressor, to avoid the system pressure of air conditioner
Power is excessive to lead to air conditioner fault.
In one embodiment of the invention, optionally, step 506, in the operating mode according to outlet pressure and prestoring
Pressure threshold controls the step of compressor, specifically includes: in the case where operational mode is heating mode, relatively and confirming first
The difference for prestoring pressure threshold and outlet pressure is less than or equal to the first difference threshold, controls compressor shutdown or reduces revolving speed.
In one embodiment of the invention, optionally, step 506, in the operating mode according to outlet pressure and prestoring
Pressure threshold controls the step of compressor, specifically includes: in the case where operational mode is refrigeration mode, relatively and confirming second
The difference for prestoring pressure threshold and outlet pressure is less than or equal to the second difference threshold, or relatively and confirms outlet pressure and the
Three differences for prestoring pressure threshold are less than or equal to third difference threshold, control compressor shutdown or reduce revolving speed, second prestores
Pressure threshold is greater than third and prestores pressure threshold.
In one particular embodiment of the present invention, a kind of pressure protection method of air conditioner, the interior of air conditioner are proposed
The exit of machine heat exchanger is provided with pressure sensor, which acquires outlet pressure, and multiple outlet pressures are formed out
Mouth pressure curve, Fig. 6 show the flow diagram of the pressure protection method of the air conditioner of a specific embodiment of the invention.
Wherein, which includes:
Step 602, control air conditioner operation, obtains outlet pressure curve.
Step 604, linear protection judgement is carried out according to outlet pressure curve, compressor rotary speed (frequency), i.e. judgement outlet
Whether pressure curve is greater than corresponding first curve of compressor rotary speed or whether is less than corresponding second curve of compressor rotary speed,
If then entering step 606, return step 602 if not.Wherein, the numerical value on the first curve is all larger than the number on the second curve
Value.
Step 606, determine that compressor operates extremely, compressor is standby, and accumulative standby times.
Fig. 7 shows the schematic diagram of the compressor range of operation of the air conditioner of a specific embodiment of the invention, air-conditioning
The exit of the indoor set heat exchanger of device is provided with pressure sensor, which acquires outlet pressure, multiple outlet pressures
Power forms outlet pressure curve.Wherein, L11 is outlet pressure curve under air conditioner heat-production mode, and L12 is air conditioner heat-production mode
Lower preset pressure threshold curve (maximum preset pressure threshold curve MAX), L12 is corresponding with the revolving speed of compressor, i.e., each to turn
A preset pressure threshold value on the corresponding L12 of speed.Under a certain revolving speed, outlet pressure is greater than the corresponding preset pressure of the revolving speed
Threshold value then controls compressor shutdown or reduces compressor rotary speed.As shown in fig. 7, outlet pressure is 4.15MPa, the at this time revolving speed
The corresponding preset pressure threshold value of 45rps is 4.0MPa, and outlet pressure then controls compressor shutdown greater than preset pressure threshold value at this time
Or reduce compressor rotary speed.
L21 is outlet pressure curve under air conditioner heat-production mode, and L22 is the first preset pressure threshold under air conditioner refrigeration mode
Be worth curve (maximum preset pressure threshold curve MAX), L23 be air conditioner refrigeration mode under the second preset pressure threshold curve (most
Small preset pressure threshold curve), L22, the L23 are corresponding with the revolving speed of compressor, i.e., each revolving speed respectively corresponds L22, L23
On a preset pressure threshold value, be the first preset pressure threshold value on L22, on L23 be the second preset pressure threshold value.When
Under a certain revolving speed, it is corresponding less than the revolving speed that outlet pressure is greater than the corresponding first preset pressure threshold value of the revolving speed or outlet pressure
The second preset pressure threshold value then control compressor shutdown or reduce compressor rotary speed.As shown in fig. 7, outlet pressure is
1.31MPa, the corresponding first preset pressure threshold value of revolving speed 30rps is 1.15MPa at this time, and it is pre- to be greater than first for outlet pressure at this time
If pressure threshold then controls compressor shutdown or reduces compressor rotary speed.Alternatively, outlet pressure is 0.15MPa, at this time this turn
The corresponding second preset pressure threshold value of fast 24rps is 0.18MPa, and outlet pressure is then controlled less than the second preset pressure threshold value at this time
Compressor shutdown reduces compressor rotary speed.
It should be noted that for the compression ratio Pcr requirement in Fig. 7, as long as to be less than revolving speed corresponding pre- for outlet pressure
If pressure threshold, that is, when not needing to carry out pressure protection to air conditioner, it can satisfy compression ratio Pcr requirement.
The embodiment of third aspect present invention proposes a kind of computer readable storage medium, is stored thereon with computer
Program, when computer program is executed by processor the step of the realization such as control method of the air conditioner of above-mentioned any embodiment.
Computer readable storage medium provided by the invention is realized when computer program is executed by processor as any of the above-described
The step of control method of the air conditioner of embodiment, therefore the computer readable storage medium includes the sky of any of the above-described embodiment
Adjust whole beneficial effects of the control method of device.
In the description of this specification, term " first ", " second " are only used for the purpose of description, and should not be understood as indicating
Or imply relative importance, unless otherwise clearly defined and limited；Term " connection ", " installation ", " fixation " etc. should all be done extensively
Reason and good sense solution, for example, " connection " may be fixed connection or may be dismantle connection, or integral connection；It can be direct phase
It even, can also be indirectly connected through an intermediary.For the ordinary skill in the art, it can manage as the case may be
Solve the concrete meaning of above-mentioned term in the present invention.
In the description of this specification, the description of term " one embodiment ", " some embodiments ", " specific embodiment " etc.
Mean that particular features, structures, materials, or characteristics described in conjunction with this embodiment or example are contained at least one reality of the invention
It applies in example or example.In the present specification, schematic expression of the above terms are not necessarily referring to identical embodiment or reality
Example.Moreover, description particular features, structures, materials, or characteristics can in any one or more of the embodiments or examples with
Suitable mode combines.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (11)
1. a kind of air conditioner characterized by comprising
Pressure acquisition device is set to the outlet of the indoor set heat exchanger of the air conditioner, for acquiring the indoor unit heat exchange
The outlet pressure of device；
Control device, for obtaining the revolving speed of the compressor of the air conditioner and corresponding with the revolving speed prestoring pressure threshold
Value, and the compressor is controlled according to the outlet pressure and the pressure threshold that prestores.
2. air conditioner according to claim 1, which is characterized in that the control device be used for according to the outlet pressure and
It is described to prestore the step of pressure threshold controls the compressor, it specifically includes:
Obtain the operational mode of the air conditioner；
The compressor is controlled according to the outlet pressure and the pressure threshold that prestores under the operational mode.
3. air conditioner according to claim 2, which is characterized in that the control device is used for the root under the operational mode
According to the outlet pressure and described the step of prestoring the pressure threshold control compressor, specifically include:
In the case where the operational mode is heating mode, relatively and confirm that first prestores pressure threshold and the outlet pressure
Difference be less than or equal to the first difference threshold, control the compressor shutdown or reduce the revolving speed.
4. air conditioner according to claim 2, which is characterized in that the control device is used for the root under the operational mode
According to the outlet pressure and described the step of prestoring the pressure threshold control compressor, specifically include:
In the case where the operational mode is refrigeration mode, relatively and confirm that second prestores pressure threshold and the outlet pressure
Difference be less than or equal to the second difference threshold, or relatively and confirm the outlet pressure and third prestores the difference of pressure threshold
Value is less than or equal to third difference threshold, controls the compressor shutdown or reduces the revolving speed, described second prestores pressure threshold
Value is greater than the third and prestores pressure threshold.
5. air conditioner according to claim 3 or 4, which is characterized in that
Control device is also used to record the number of the compressor shutdown and/or the number of the record reduction revolving speed, and in institute
In the case that the number that the number and/or record for stating compressor shutdown reduce the revolving speed is greater than or equal to preset times threshold value,
Forbid the compressor start.
6. a kind of control method of air conditioner characterized by comprising
Obtain the outlet pressure of the indoor set heat exchanger of the air conditioner, the compressor of the air conditioner revolving speed and with it is described
Revolving speed is corresponding to prestore pressure threshold；
The compressor is controlled according to the outlet pressure and the pressure threshold that prestores.
7. the control method of air conditioner according to claim 6, which is characterized in that described according to the outlet pressure and institute
It states and prestores the step of pressure threshold controls the compressor, specifically include:
Obtain the operational mode of the air conditioner；
The compressor is controlled according to the outlet pressure and the pressure threshold that prestores under the operational mode.
8. the control method of air conditioner according to claim 7, which is characterized in that the basis under the operational mode
It the outlet pressure and described the step of prestoring the pressure threshold control compressor, specifically includes:
In the case where the operational mode is heating mode, relatively and confirm that first prestores pressure threshold and the outlet pressure
Difference be less than or equal to the first difference threshold, control the compressor shutdown or reduce the revolving speed.
9. the control method of air conditioner according to claim 7, which is characterized in that the basis under the operational mode
It the outlet pressure and described the step of prestoring the pressure threshold control compressor, specifically includes:
In the case where the operational mode is refrigeration mode, relatively and confirm that second prestores pressure threshold and the outlet pressure
Difference be less than or equal to the second difference threshold, or relatively and confirm the outlet pressure and third prestores the difference of pressure threshold
Value is less than or equal to third difference threshold, controls the compressor shutdown or reduces the revolving speed, described second prestores pressure threshold
Value is greater than the third and prestores pressure threshold.
10. the control method of air conditioner according to claim 8 or claim 9, which is characterized in that further include:
The number and/or record that record the compressor shutdown reduce the number of the revolving speed；
It is greater than or equal to preset times threshold value in the number that the number and/or record of the compressor shutdown reduce the revolving speed
In the case of, forbid the compressor start.
11. a kind of computer readable storage medium, is stored thereon with computer program, which is characterized in that the computer program
The step of control method of the air conditioner as described in any one of claim 6 to 10 is realized when being executed by processor.
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| CN201811613623.0A CN109751708A (en) | 2018-12-27 | 2018-12-27 | The control method and storage medium of a kind of air conditioner, air conditioner |
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| CN201811613623.0A CN109751708A (en) | 2018-12-27 | 2018-12-27 | The control method and storage medium of a kind of air conditioner, air conditioner |
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| CN110986321A (en) * | 2019-12-16 | 2020-04-10 | 青岛海尔空调器有限总公司 | Air conditioner and control method thereof |
| CN111076350B (en) * | 2019-12-30 | 2021-09-21 | 宁波奥克斯电气股份有限公司 | Control method and device for starting compressor and air conditioner |
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Application publication date: 20190514 |