CN109945401A - Control method, device and the air conditioner of air conditioner - Google Patents

Control method, device and the air conditioner of air conditioner Download PDF

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Publication number
CN109945401A
CN109945401A CN201910227622.0A CN201910227622A CN109945401A CN 109945401 A CN109945401 A CN 109945401A CN 201910227622 A CN201910227622 A CN 201910227622A CN 109945401 A CN109945401 A CN 109945401A
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CN
China
Prior art keywords
temperature
aperture
expansion valve
middle portion
electric expansion
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CN201910227622.0A
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Chinese (zh)
Inventor
邹大枢
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广东美的制冷设备有限公司
美的集团股份有限公司
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Application filed by 广东美的制冷设备有限公司, 美的集团股份有限公司 filed Critical 广东美的制冷设备有限公司
Priority to CN201910227622.0A priority Critical patent/CN109945401A/en
Publication of CN109945401A publication Critical patent/CN109945401A/en

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Abstract

The invention proposes a kind of control method of air conditioner, device and air conditioner, which includes: in cooling mode, to obtain outdoor environment temperature;If outdoor environment temperature is equal to or less than preset outdoor environment temperature threshold value, condenser middle portion temperature is obtained;The revolving speed of outdoor fan and the aperture of electric expansion valve are controlled according to condenser middle portion temperature.Control method, device and the air conditioner of air conditioner of the invention, when outdoor environment temperature is equal to or less than preset outdoor environment temperature threshold value, the revolving speed of outdoor fan and the aperture of electric expansion valve are controlled according to condenser middle portion temperature, it can make air conditioner operation reliable and stable at low temperature, and cost is relatively low, high production efficiency, after-sales service are convenient.

Description

Control method, device and the air conditioner of air conditioner

Technical field

The present invention relates to technical field of electric appliances more particularly to a kind of control methods of air conditioner, device and air conditioner.

Background technique

Air conditioner at low temperature (such as -10 DEG C of outdoor environment temperature or less) work when, since outdoor environment temperature is very low, Outdoor heat exchange is very sufficient, so that the refrigerant after being exchanged heat by outside has very big degree of supercooling, the refrigerant temperature after leading to throttling is very It is low, it is easy to the indoor preset anti-freeze protective program of triggering leads to frequent shutdown, this not only will lead to fluctuations in indoor temperature compared with Greatly, also noise can be generated because of frequent startup-shutdown;Simultaneously as degree of supercooling is excessive, cause not complete by the refrigerant of indoor Pervaporation, so that compressor hydraulic compression, influences reliability and the service life of compressor.

In the related technology, usually by adding temperature sensor or pressure switch or changing the heat dissipation of fractional distilling tube The modes such as area run air conditioner at low ambient temperatures, but these schemes not only lead to cost increase, also reduce Production efficiency, increases the difficulty of after-sales service.

Summary of the invention

The present invention is directed to solve at least some of the technical problems in related technologies.

For this purpose, the first purpose of this invention is to propose a kind of control method of air conditioner, outdoor environment temperature is equal to It is swollen according to the revolving speed of condenser middle portion temperature control outdoor fan and electronics or when being less than preset outdoor environment temperature threshold value The aperture of swollen valve can make air conditioner operation reliable and stable at low temperature, and cost is relatively low, high production efficiency, and after-sales service is convenient.

Second object of the present invention is to propose a kind of control device of air conditioner.

Third object of the present invention is to propose a kind of air conditioner.

Fourth object of the present invention is to propose a kind of electronic equipment.

5th purpose of the invention is to propose a kind of computer readable storage medium.

In order to achieve the above object, first aspect present invention embodiment proposes a kind of control method of air conditioner, comprising:

In cooling mode, outdoor environment temperature is obtained;

If the outdoor environment temperature is equal to or less than preset outdoor environment temperature threshold value, obtain in the middle part of condenser Temperature;

The revolving speed of outdoor fan and the aperture of electric expansion valve are controlled according to the condenser middle portion temperature.

The control method of the air conditioner proposed according to embodiments of the present invention obtains outdoor environment temperature in cooling mode; If outdoor environment temperature is equal to or less than preset outdoor environment temperature threshold value, condenser middle portion temperature is obtained;According to cold Condenser middle portion temperature controls the revolving speed of outdoor fan and the aperture of electric expansion valve, can make air conditioner fortune reliable and stable at low temperature Row, and cost is relatively low, high production efficiency, after-sales service is convenient.

According to one embodiment of present invention, it is described according to the condenser middle portion temperature control outdoor fan revolving speed and The aperture of electric expansion valve, comprising: the temperature of corresponding default saturation refrigerant is obtained according to the outdoor environment temperature;If described Condenser middle portion temperature is greater than the temperature of the default saturation refrigerant, then controls the outdoor fan according to preset maximum speed It runs, and controls the aperture of the electric expansion valve according to preset target exhaust temperature.

According to one embodiment of present invention, it is described according to the condenser middle portion temperature control outdoor fan revolving speed and The aperture of electric expansion valve, further includes: if the condenser middle portion temperature be equal to or more than the first temperature threshold and be less than or Person is equal to the temperature of the default saturation refrigerant, then controls the outdoor fan and current revolving speed is kept to run, and described in control Electric expansion valve keeps current aperture, and the temperature of the default saturation refrigerant and the difference of first temperature threshold are equal to the One preset difference value.

According to one embodiment of present invention, it is described according to the condenser middle portion temperature control outdoor fan revolving speed and The aperture of electric expansion valve, further includes: if the condenser middle portion temperature is greater than second temperature threshold value and is less than first temperature Threshold value is spent, then the revolving speed for controlling the outdoor fan is gradually decreased according to the first setting value until the outdoor fan stops fortune Row, and after the outdoor fan the first setting time out of service, the aperture for controlling the electric expansion valve is gradually increased, and When the condenser middle portion temperature is greater than the temperature of the default saturation refrigerant, controls the electric expansion valve and keep at present Aperture, it is described it is default saturation refrigerant temperature and the second temperature threshold value difference be equal to the second preset difference value, described second Preset difference value is greater than first preset difference value.

According to one embodiment of present invention, it is described according to the condenser middle portion temperature control outdoor fan revolving speed and The aperture of electric expansion valve, further includes: if the condenser middle portion temperature is equal to or less than the second temperature threshold value, control The revolving speed of the outdoor fan is made to be gradually decreased according to the second setting value until the outdoor fan is out of service, and in the room After outer blower first setting time out of service, the aperture for controlling the electric expansion valve is gradually increased, and described cold When condenser middle portion temperature is greater than the temperature of the default saturation refrigerant, the aperture that the electric expansion valve keeps current is controlled, institute The second setting value is stated greater than first setting value.

According to one embodiment of present invention, control method further include: if the outdoor environment temperature is greater than the room External environment temperature threshold then controls the outdoor fan and runs according to the maximum speed, and according to the target exhaust temperature Control the aperture of the electric expansion valve.

According to one embodiment of present invention, the acquisition outdoor environment temperature, comprising: periodically acquire outdoor environment temperature Degree.

In order to achieve the above object, second aspect of the present invention embodiment proposes a kind of control device of air conditioner, comprising:

First obtains module, in cooling mode, obtaining outdoor environment temperature;

Second obtains module, if being equal to or less than preset outdoor environment temperature threshold for the outdoor environment temperature Value, then obtain condenser middle portion temperature;

Control module, for controlling the revolving speed of outdoor fan and opening for electric expansion valve according to the condenser middle portion temperature Degree.

The control device of the air conditioner proposed according to embodiments of the present invention obtains outdoor environment temperature in cooling mode; If outdoor environment temperature is equal to or less than preset outdoor environment temperature threshold value, condenser middle portion temperature is obtained;According to cold Condenser middle portion temperature controls the revolving speed of outdoor fan and the aperture of electric expansion valve, can make air conditioner fortune reliable and stable at low temperature Row, and cost is relatively low, high production efficiency, after-sales service is convenient.

According to one embodiment of present invention, the control module is specifically used for: being obtained according to the outdoor environment temperature The temperature of corresponding default saturation refrigerant;If the condenser middle portion temperature is greater than the temperature of the default saturation refrigerant, control It makes the outdoor fan to run according to preset maximum speed, and the electronic expansion is controlled according to preset target exhaust temperature The aperture of valve.

According to one embodiment of present invention, the control module is specifically used for: if the condenser middle portion temperature is equal to Or greater than the first temperature threshold and be less than or equal to the default temperature for being saturated refrigerant, then it controls the outdoor fan and protects Hold current revolving speed operation, and control the aperture that the electric expansion valve keeps current, the temperature of the default saturation refrigerant with The difference of first temperature threshold is equal to the first preset difference value.

According to one embodiment of present invention, the control module is specifically used for: if the condenser middle portion temperature is greater than Second temperature threshold value and it is less than first temperature threshold, then controls the revolving speed of the outdoor fan according to the first setting value gradually It is out of service to decrease up to the outdoor fan, and after the outdoor fan the first setting time out of service, described in control The aperture of electric expansion valve is gradually increased, and when the condenser middle portion temperature is greater than the temperature of the default saturation refrigerant, Control the aperture that the electric expansion valve keeps current, the temperature of the default saturation refrigerant and the difference of the second temperature threshold value Value is equal to the second preset difference value, and second preset difference value is greater than first preset difference value.

According to one embodiment of present invention, the control module is specifically used for: if the condenser middle portion temperature is equal to Or being less than the second temperature threshold value, then the revolving speed for controlling the outdoor fan is gradually decreased according to the second setting value until institute It is out of service to state outdoor fan, and after the outdoor fan first setting time out of service, it is swollen to control the electronics The aperture of swollen valve is gradually increased, and when the condenser middle portion temperature is greater than the temperature of the default saturation refrigerant, controls institute The aperture that electric expansion valve keeps current is stated, second setting value is greater than first setting value.

According to one embodiment of present invention, the control module is also used to: if the outdoor environment temperature is greater than described Outdoor environment temperature threshold value then controls the outdoor fan and runs according to the maximum speed, and according to the target exhaust temperature Degree controls the aperture of the electric expansion valve.

According to one embodiment of present invention, the first acquisition module is specifically used for: periodically acquiring outdoor environment temperature Degree.

In order to achieve the above object, third aspect present invention embodiment proposes a kind of air conditioner, comprising: such as second party of the present invention The control device of air conditioner described in the embodiment of face.

In order to achieve the above object, fourth aspect present invention embodiment proposes a kind of electronic equipment, comprising: memory, processing Device and it is stored in the computer program that can be run on the memory and on the processor, the processor executes the journey When sequence, the control method of the air conditioner as described in first aspect present invention embodiment is realized.

In order to achieve the above object, fifth aspect present invention embodiment proposes a kind of computer readable storage medium, deposit thereon Computer program is contained, the control of the air conditioner as described in first aspect present invention embodiment is realized when which is executed by processor Method processed.

Detailed description of the invention

Fig. 1 is the systematic schematic diagram of air conditioner according to an embodiment of the invention;

Fig. 2 is the flow chart of the control method of air conditioner according to an embodiment of the invention;

Fig. 3 is the flow chart of the control method of air conditioner in accordance with another embodiment of the present invention;

Fig. 4 is the specific flow chart of the control method of air conditioner according to an embodiment of the invention;

Fig. 5 is the structure chart of the control device of air conditioner according to an embodiment of the invention;

Fig. 6 is the structure chart of air conditioner according to an embodiment of the invention;

Fig. 7 is the structure chart of electronic equipment according to an embodiment of the invention.

Specific embodiment

The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.

With reference to the accompanying drawing come describe the embodiment of the present invention air conditioner control method, device and air conditioner.

Fig. 1 is the systematic schematic diagram of air conditioner according to an embodiment of the invention, as shown in Figure 1, the embodiment of the present invention Air conditioner include: fluid reservoir 10;Compressor 11;Four-way valve 12;Condenser 13;Outdoor environment temperature sensor 14;Condenser Middle portion temperature sensor 15;Electric expansion valve 16;Evaporator 17;Indoor environment temperature sensor 18;Evaporator middle portion temperature passes Sensor 19.

Wherein, the surface of 13 middle part copper pipe of condenser is arranged in condenser middle portion temperature sensor 15, for detecting condensation Device middle portion temperature;Outdoor environment temperature sensor 14 is arranged on the fin of 13 windward side of condenser, for detecting outdoor environment Temperature;Indoor environment temperature sensor 18 is arranged on the fin of 17 windward side of evaporator, for detecting indoor environment temperature;It steams The surface of 17 middle part copper pipe of evaporator is arranged in hair device middle portion temperature sensor 19, for detecting the temperature in the middle part of evaporator;Electricity Sub- expansion valve 16 is used for reducing pressure by regulating flow, is adjusted according to the program of system, to use the operation of air-conditioner system;Fluid reservoir 10 For storing liquid coolant and separation gaseous coolant, gaseous coolant is turned again in compressor 11 and is recycled, and liquid coolant is then It is stored in fluid reservoir 10.

Air conditioner freeze when, compressor 11 be discharged high pressure gaseous refrigerant flow through four-way valve 12 to 13 side of condenser into It after row heat dissipation, throttles by electric expansion valve 16, forms low-temp low-pressure refrigerant, refrigerant is entered back into indoor evaporator 17 Heat absorption evaporation is carried out, fluid reservoir 10 is entered back into, gaseous coolant is returned in compressor 11 and recycled.

When air conditioner heat-production, compressor 11 be discharged high pressure gaseous refrigerant flow through four-way valve 12 to 17 side of evaporator into It after row heat dissipation, throttles by electric expansion valve 16, forms low-temp low-pressure refrigerant, refrigerant enters back into outdoor side condenser 13 Heat absorption evaporation is carried out, fluid reservoir 10 is entered back into, gaseous coolant is returned in compressor 11 and recycled.

Fig. 2 is the flow chart of the control method of air conditioner according to an embodiment of the invention, as shown in Fig. 2, the control Method includes:

S101 obtains outdoor environment temperature T4 in cooling mode.

In the embodiment of the present invention, in cooling mode, 14 period of outdoor environment temperature sensor as shown in Figure 1 can be passed through Property obtain outdoor environment temperature T4, the acquisitions period be T.

S102 obtains condensation if outdoor environment temperature T4 is equal to or less than preset outdoor environment temperature threshold value T40 Device middle portion temperature T3.

In the embodiment of the present invention, outdoor environment temperature threshold value T40 can be preset, outdoor environment temperature threshold value T40 is concretely Air conditioner is the temperature threshold of cryogenic refrigeration working condition, such as -10 DEG C.After obtaining outdoor environment temperature T4, by itself and T40 ratio Compared with, if T4≤T40, illustrate at this time air conditioner be cryogenic refrigeration working condition, obtain condenser middle portion temperature T3, specifically , condenser middle portion temperature T3 can be obtained by condenser middle portion temperature sensor 15 as shown in Figure 1.

S103 controls the revolving speed of outdoor fan and the aperture of electric expansion valve according to condenser middle portion temperature T3.

In the embodiment of the present invention, the revolving speed of outdoor fan and opening for electric expansion valve are controlled according to condenser middle portion temperature T3 Degree, and after T time, it returns to S101 step and executes its subsequent step.Outdoor fan is controlled according to condenser middle portion temperature Revolving speed can reach the effect of energy saving.

The control method of the air conditioner proposed according to embodiments of the present invention obtains outdoor environment temperature in cooling mode; If outdoor environment temperature is equal to or less than preset outdoor environment temperature threshold value, condenser middle portion temperature is obtained;According to cold Condenser middle portion temperature controls the revolving speed of outdoor fan and the aperture of electric expansion valve, can make air conditioner fortune reliable and stable at low temperature Row, and cost is relatively low, high production efficiency, after-sales service is convenient.

Further, as shown in figure 3, Fig. 3 is the stream of the control method of air conditioner in accordance with another embodiment of the present invention Cheng Tu, embodiment illustrated in fig. 2 S103 step are specific can include:

S201 obtains the temperature T30 of corresponding default saturation refrigerant according to outdoor environment temperature T4.

In the embodiment of the present invention, can preset in a program outdoor environment temperature T4 and default saturation refrigerant temperature T30 it Between mapping relations, obtain outdoor environment temperature T4 after, inquire above-mentioned mapping relations, corresponding default saturation refrigerant can be obtained Temperature T30.

S202 controls outdoor fan according to pre- if condenser middle portion temperature T3 is greater than the temperature T30 of default saturation refrigerant If maximum speed operation, and according to preset target exhaust temperature control electric expansion valve aperture.

In the embodiment of the present invention, if T3 > T30, controls outdoor fan and run according to preset maximum speed, and root According to the aperture of preset target exhaust temperature control electric expansion valve.

Further, embodiment illustrated in fig. 2 S103 step may also include that

If condenser middle portion temperature T3 is equal to or more than the first temperature threshold T30- △ T1 and is less than or equal to default It is saturated the temperature T30 of refrigerant, then controls outdoor fan and current revolving speed is kept to run, and controls electric expansion valve and keeps at present Aperture, the difference for presetting the temperature T30 and the first temperature threshold T30- △ T1 of saturation refrigerant are equal to the first preset difference value △ T1.

In the embodiment of the present invention, the first preset difference value △ T1 can be preset, then the first temperature threshold is T30- △ T1.If T30- △ T1≤T3≤T30 then controls outdoor fan and current revolving speed is kept to run, and controls electric expansion valve and keep at present Aperture.

Further, embodiment illustrated in fig. 2 S103 step may also include that

If condenser middle portion temperature T3 is greater than second temperature threshold value T30- △ T2 and less than the first temperature threshold T30- △ T1, The revolving speed for then controlling outdoor fan is gradually decreased according to the first setting value until outdoor fan is out of service, and stops in outdoor fan After only running the first setting time, the aperture for controlling electric expansion valve is gradually increased, and temperature T3 in portion's is greater than in advance within the condenser If control electric expansion valve keeps current aperture when the temperature T30 of saturation refrigerant, the temperature T30 and the of saturation refrigerant is preset The difference of two temperature threshold T30- △ T2 is equal to the second preset difference value △ T2, the second preset difference value △ T2 and is greater than the first preset difference value △T1。

In the embodiment of the present invention, can preset second level difference △ T2, then second temperature threshold value be T30- △ T2, wherein △ T2 > △ T1.If T30- △ T2 < T3 < T30- △ T1, the revolving speed of outdoor fan is controlled according to the first setting value gradually It is out of service to decrease up to outdoor fan, such as when the first setting value is N grades/minute, controls the revolving speed of outdoor fan by N Shelves/minute gradually decreases until outdoor fan is out of service.And after outdoor fan the first setting time out of service, control electricity The aperture of sub- expansion valve is gradually increased, and in T3 > T30, and control electric expansion valve keeps current aperture.

Further, embodiment illustrated in fig. 2 S103 step may also include that

If condenser middle portion temperature T3 is equal to or less than second temperature threshold value T30- △ T2, turning for outdoor fan is controlled Speed is gradually decreased according to the second setting value until outdoor fan is out of service, and in outdoor fan the first setting time out of service Afterwards, the aperture for controlling electric expansion valve is gradually increased, and temperature T3 in portion's is greater than the temperature T30 of default saturation refrigerant within the condenser When, control electric expansion valve keeps current aperture, and the second setting value is greater than the first setting value.

In the embodiment of the present invention, if T3≤T30- △ T2, control the revolving speed of outdoor fan according to the second setting value by It is out of service gradually to decrease up to outdoor fan, such as when the second setting value is M grades/minute, controls the revolving speed of outdoor fan by M Shelves/minute gradually decreases until outdoor fan is out of service, wherein the second setting value is greater than the first setting value.And in outdoor wind After machine the first setting time out of service, the aperture for controlling electric expansion valve is gradually increased, and in T3 > T30, controls electronics Expansion valve keeps current aperture.

Further, on the basis of embodiment shown in Fig. 2, the control method further include:

If outdoor environment temperature T4 is greater than outdoor environment temperature threshold value T40, controls outdoor fan and transported according to maximum speed Row, and according to the aperture of target exhaust temperature control electric expansion valve.

In the embodiment of the present invention, if T4 > T40, air conditioner non-cryogenic refrigeration work state, control outdoor fan is pressed It is run according to maximum speed, and controls the aperture of electric expansion valve according to target exhaust temperature.And after T time, S101 step is returned Suddenly and its subsequent step is executed.

It is described in detail below with reference to control method of the Fig. 4 to the air conditioner of the embodiment of the present invention, Fig. 4 is according to this hair The specific flow chart of the control method of the air conditioner of bright one embodiment, as shown in figure 4, the control method specifically includes:

S301 periodically acquires outdoor environment temperature T4 in cooling mode, and the acquisition period is T.

S302 judges whether T4≤T40.

If so, entering step S304;If it is not, entering step S303.

S303, control outdoor fan is run according to maximum speed, and controls electric expansion valve according to target exhaust temperature Aperture, and S301 step is returned after T time.

S304 obtains the temperature T30 of corresponding default saturation refrigerant according to outdoor environment temperature T4.

If T3 > T30, enters step S305;

If T30- △ T1≤T3≤T30, enters step S306;

If T30- △ T2 < T3 < T30- △ T1, enters step S307;

If T3≤T30- △ T2, enters step S308.

S305, control outdoor fan is run according to preset maximum speed, and is controlled according to preset target exhaust temperature The aperture of electric expansion valve.And S301 step is returned to after T time.

S306, control outdoor fan keeps current revolving speed to run, and controls the aperture that electric expansion valve keeps current.And S301 step is returned after T time.

S307 controls the revolving speed of outdoor fan and is gradually decreased according to the first setting value until outdoor fan is out of service, and After outdoor fan the first setting time out of service, the aperture for controlling electric expansion valve is gradually increased, and portion within the condenser When temperature T3 is greater than the temperature T30 of default saturation refrigerant, control electric expansion valve keeps current aperture.And it is returned after T time Return S301 step.

S308 controls the revolving speed of outdoor fan and is gradually decreased according to the second setting value until outdoor fan is out of service, and After outdoor fan the first setting time out of service, the aperture for controlling electric expansion valve is gradually increased, and portion within the condenser When temperature T3 is greater than the temperature T30 of default saturation refrigerant, control electric expansion valve keeps current aperture.And it is returned after T time Return S301 step.

The control method of the air conditioner proposed according to embodiments of the present invention obtains outdoor environment temperature in cooling mode; If outdoor environment temperature is equal to or less than preset outdoor environment temperature threshold value, condenser middle portion temperature is obtained;According to cold Condenser middle portion temperature controls the revolving speed of outdoor fan and the aperture of electric expansion valve, can make air conditioner fortune reliable and stable at low temperature Row, and cost is relatively low, high production efficiency, after-sales service is convenient.

Fig. 5 is the structure chart of the control device of air conditioner according to an embodiment of the invention, as shown in figure 5, the control Device includes:

First obtains module 21, in cooling mode, obtaining outdoor environment temperature;

Second obtains module 22, if being equal to or less than preset outdoor environment temperature threshold value for outdoor environment temperature, Then obtain condenser middle portion temperature;

Control module 23, for controlling the revolving speed of outdoor fan and opening for electric expansion valve according to condenser middle portion temperature Degree.

It should be noted that the explanation of the aforementioned control method embodiment to air conditioner is also applied for the embodiment The control device of air conditioner, details are not described herein again.

The control device of the air conditioner proposed according to embodiments of the present invention obtains outdoor environment temperature in cooling mode; If outdoor environment temperature is equal to or less than preset outdoor environment temperature threshold value, condenser middle portion temperature is obtained;According to cold Condenser middle portion temperature controls the revolving speed of outdoor fan and the aperture of electric expansion valve, can make air conditioner fortune reliable and stable at low temperature Row, and cost is relatively low, high production efficiency, after-sales service is convenient.

Further, in a kind of possible implementation of the embodiment of the present invention, control module 23 is specifically used for: according to room External environment temperature obtains the temperature of corresponding default saturation refrigerant;If condenser middle portion temperature is greater than the temperature of default saturation refrigerant Degree, then control outdoor fan and run according to preset maximum speed, and controls electronic expansion according to preset target exhaust temperature The aperture of valve.

Further, in a kind of possible implementation of the embodiment of the present invention, control module 23 is specifically used for: if condensation Device middle portion temperature is equal to or more than the first temperature threshold and is less than or equal to the temperature of default saturation refrigerant, then outside control room The revolving speed that blower keeps current is run, and controls the aperture that electric expansion valve keeps current, presets the temperature and the of saturation refrigerant The difference of one temperature threshold is equal to the first preset difference value.

Further, in a kind of possible implementation of the embodiment of the present invention, control module 23 is specifically used for: if condensation Device middle portion temperature is greater than second temperature threshold value and less than the first temperature threshold, then controls the revolving speed of outdoor fan according to the first setting Value gradually decreases until outdoor fan is out of service, and after outdoor fan the first setting time out of service, control electronics is swollen The aperture of swollen valve is gradually increased, and when portion's temperature is greater than the temperature of default saturation refrigerant within the condenser, controls electric expansion valve Current aperture is kept, the difference of the temperature and second temperature threshold value of presetting saturation refrigerant is equal to the second preset difference value, and second is pre- If difference is greater than the first preset difference value.

Further, in a kind of possible implementation of the embodiment of the present invention, control module 23 is specifically used for: if condensation Device middle portion temperature is equal to or less than second temperature threshold value, then the revolving speed for controlling outdoor fan is gradually decreased according to the second setting value Until outdoor fan is out of service, and after outdoor fan the first setting time out of service, control the aperture of electric expansion valve It is gradually increased, and when portion's temperature is greater than the temperature of default saturation refrigerant within the condenser, control electric expansion valve keeps current Aperture, the second setting value are greater than the first setting value.

Further, in a kind of possible implementation of the embodiment of the present invention, control module 23 is also used to: if outdoor ring Border temperature is greater than outdoor environment temperature threshold value, then controls outdoor fan and run according to maximum speed, and according to target exhaust temperature Control the aperture of electric expansion valve.

Further, in a kind of possible implementation of the embodiment of the present invention, the first acquisition module 21 is specifically used for: week Phase property obtains outdoor environment temperature.

It should be noted that the explanation of the aforementioned control method embodiment to air conditioner is also applied for the embodiment The control device of air conditioner, details are not described herein again.

The control device of the air conditioner proposed according to embodiments of the present invention obtains outdoor environment temperature in cooling mode; If outdoor environment temperature is equal to or less than preset outdoor environment temperature threshold value, condenser middle portion temperature is obtained;According to cold Condenser middle portion temperature controls the revolving speed of outdoor fan and the aperture of electric expansion valve, can make air conditioner fortune reliable and stable at low temperature Row, and cost is relatively low, high production efficiency, after-sales service is convenient.

In order to realize above-described embodiment, the embodiment of the present invention also proposes a kind of air conditioner 30, as shown in Figure 6, comprising: above-mentioned The control device 31 of air conditioner shown in embodiment.

In order to realize above-described embodiment, the embodiment of the present invention also proposes a kind of electronic equipment 40, as shown in fig. 7, the electronics Equipment includes memory 41 and processor 42.It is stored with the computer program that can be run on processor 42 on memory 41, locates It manages device 42 and executes program, realize the control method of the air conditioner as shown in above-described embodiment.

In order to realize above-described embodiment, the embodiment of the present invention also proposes a kind of non-transitorycomputer readable storage medium, It is stored thereon with computer program, when which is executed by processor, realizes the control of the air conditioner as shown in above-described embodiment Method.

In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be any It can be combined in any suitable manner in a or multiple embodiment or examples.In addition, without conflicting with each other, the technology of this field The feature of different embodiments or examples described in this specification and different embodiments or examples can be combined by personnel And combination.

Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned Embodiment is changed, modifies, replacement and variant.

Claims (17)

1. a kind of control method of air conditioner characterized by comprising
In cooling mode, outdoor environment temperature is obtained;
If the outdoor environment temperature is equal to or less than preset outdoor environment temperature threshold value, temperature in the middle part of condenser is obtained Degree;
The revolving speed of outdoor fan and the aperture of electric expansion valve are controlled according to the condenser middle portion temperature.
2. control method according to claim 1, which is characterized in that described according to the condenser middle portion temperature control room The revolving speed of outer blower and the aperture of electric expansion valve, comprising:
The temperature of corresponding default saturation refrigerant is obtained according to the outdoor environment temperature;
If the condenser middle portion temperature is greater than the temperature of the default saturation refrigerant, the outdoor fan is controlled according to default Maximum speed operation, and control according to preset target exhaust temperature the aperture of the electric expansion valve.
3. control method according to claim 2, which is characterized in that described according to the condenser middle portion temperature control room The revolving speed of outer blower and the aperture of electric expansion valve, further includes:
If the condenser middle portion temperature is equal to or more than the first temperature threshold and cold less than or equal to the default saturation The temperature of matchmaker then controls the outdoor fan and current revolving speed is kept to run, and controls the electric expansion valve and keep at present Aperture, the temperature of the default saturation refrigerant and the difference of first temperature threshold are equal to the first preset difference value.
4. control method according to claim 3, which is characterized in that described according to the condenser middle portion temperature control room The revolving speed of outer blower and the aperture of electric expansion valve, further includes:
If the condenser middle portion temperature is greater than second temperature threshold value and is less than first temperature threshold, the outdoor is controlled The revolving speed of blower is gradually decreased according to the first setting value until the outdoor fan is out of service, and stops in the outdoor fan After running the first setting time, the aperture for controlling the electric expansion valve is gradually increased, and big in the condenser middle portion temperature When the temperature of the default saturation refrigerant, the aperture that the electric expansion valve keeps current, the default saturation refrigerant are controlled Temperature and the difference of the second temperature threshold value be equal to the second preset difference value, it is pre- that second preset difference value is greater than described first If difference.
5. control method according to claim 4, which is characterized in that described according to the condenser middle portion temperature control room The revolving speed of outer blower and the aperture of electric expansion valve, further includes:
If the condenser middle portion temperature is equal to or less than the second temperature threshold value, the revolving speed of the outdoor fan is controlled It is gradually decreased according to the second setting value until the outdoor fan is out of service, and in the outdoor fan out of service described the After one setting time, the aperture for controlling the electric expansion valve is gradually increased, and in the condenser middle portion temperature greater than described When the temperature of default saturation refrigerant, the aperture that the electric expansion valve keeps current is controlled, second setting value is greater than described First setting value.
6. control method according to claim 1, which is characterized in that further include:
If the outdoor environment temperature is greater than the outdoor environment temperature threshold value, the outdoor fan is controlled according to the highest Revolving speed is run, and the aperture of the electric expansion valve is controlled according to the target exhaust temperature.
7. control method according to claim 1, which is characterized in that the acquisition outdoor environment temperature, comprising:
Periodically acquire outdoor environment temperature.
8. a kind of control device of air conditioner characterized by comprising
First obtains module, in cooling mode, obtaining outdoor environment temperature;
Second obtains module, if being equal to or less than preset outdoor environment temperature threshold value for the outdoor environment temperature, Obtain condenser middle portion temperature;
Control module, for controlling the revolving speed of outdoor fan and the aperture of electric expansion valve according to the condenser middle portion temperature.
9. control device according to claim 8, which is characterized in that the control module is specifically used for:
The temperature of corresponding default saturation refrigerant is obtained according to the outdoor environment temperature;
If the condenser middle portion temperature is greater than the temperature of the default saturation refrigerant, the outdoor fan is controlled according to default Maximum speed operation, and control according to preset target exhaust temperature the aperture of the electric expansion valve.
10. control device according to claim 9, which is characterized in that the control module is specifically used for:
If the condenser middle portion temperature is equal to or more than the first temperature threshold and cold less than or equal to the default saturation The temperature of matchmaker then controls the outdoor fan and current revolving speed is kept to run, and controls the electric expansion valve and keep at present Aperture, the temperature of the default saturation refrigerant and the difference of first temperature threshold are equal to the first preset difference value.
11. control device according to claim 10, which is characterized in that the control module is specifically used for:
If the condenser middle portion temperature is greater than second temperature threshold value and is less than first temperature threshold, the outdoor is controlled The revolving speed of blower is gradually decreased according to the first setting value until the outdoor fan is out of service, and stops in the outdoor fan After running the first setting time, the aperture for controlling the electric expansion valve is gradually increased, and big in the condenser middle portion temperature When the temperature of the default saturation refrigerant, the aperture that the electric expansion valve keeps current, the default saturation refrigerant are controlled Temperature and the difference of the second temperature threshold value be equal to the second preset difference value, it is pre- that second preset difference value is greater than described first If difference.
12. control device according to claim 11, which is characterized in that the control module is specifically used for:
If the condenser middle portion temperature is equal to or less than the second temperature threshold value, the revolving speed of the outdoor fan is controlled It is gradually decreased according to the second setting value until the outdoor fan is out of service, and in the outdoor fan out of service described the After one setting time, the aperture for controlling the electric expansion valve is gradually increased, and in the condenser middle portion temperature greater than described When the temperature of default saturation refrigerant, the aperture that the electric expansion valve keeps current is controlled, second setting value is greater than described First setting value.
13. control device according to claim 8, which is characterized in that the control module is also used to:
If the outdoor environment temperature is greater than the outdoor environment temperature threshold value, the outdoor fan is controlled according to the highest Revolving speed is run, and the aperture of the electric expansion valve is controlled according to the target exhaust temperature.
14. control device according to claim 8, which is characterized in that the first acquisition module is specifically used for:
Periodically acquire outdoor environment temperature.
15. a kind of air conditioner characterized by comprising such as the control device of the described in any item air conditioners of claim 8-14.
16. a kind of electronic equipment characterized by comprising memory, processor and be stored on the memory and can be in institute The computer program run on processor is stated, when the processor executes described program, is realized such as any one of claim 1-7 The control method of the air conditioner.
17. a kind of computer readable storage medium, is stored thereon with computer program, which is characterized in that the program is by processor The control method such as air conditioner of any of claims 1-7 is realized when execution.
CN201910227622.0A 2019-03-25 2019-03-25 Control method, device and the air conditioner of air conditioner CN109945401A (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20050120396A (en) * 2004-06-18 2005-12-22 위니아만도 주식회사 Air conditioner capable of continuous cooling operation
CN101113834A (en) * 2006-07-24 2008-01-30 富士通将军股份有限公司 Method of controlling air conditioner
CN101650064A (en) * 2008-08-14 2010-02-17 海尔集团公司 Low-temperature refrigeration air conditioner and wind speed control method thereof
CN202792404U (en) * 2012-09-06 2013-03-13 广东美的电器股份有限公司 Air conditioner and outdoor unit thereof
CN103411292A (en) * 2013-08-30 2013-11-27 广东志高暖通设备股份有限公司 Method for controlling low temperature refrigeration of air conditioner

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20050120396A (en) * 2004-06-18 2005-12-22 위니아만도 주식회사 Air conditioner capable of continuous cooling operation
CN101113834A (en) * 2006-07-24 2008-01-30 富士通将军股份有限公司 Method of controlling air conditioner
CN101650064A (en) * 2008-08-14 2010-02-17 海尔集团公司 Low-temperature refrigeration air conditioner and wind speed control method thereof
CN202792404U (en) * 2012-09-06 2013-03-13 广东美的电器股份有限公司 Air conditioner and outdoor unit thereof
CN103411292A (en) * 2013-08-30 2013-11-27 广东志高暖通设备股份有限公司 Method for controlling low temperature refrigeration of air conditioner

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