CN109945401B - Control method and device of air conditioner and air conditioner - Google Patents
Control method and device of air conditioner and air conditioner Download PDFInfo
- Publication number
- CN109945401B CN109945401B CN201910227622.0A CN201910227622A CN109945401B CN 109945401 B CN109945401 B CN 109945401B CN 201910227622 A CN201910227622 A CN 201910227622A CN 109945401 B CN109945401 B CN 109945401B
- Authority
- CN
- China
- Prior art keywords
- temperature
- preset
- controlling
- condenser
- expansion valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The invention provides a control method and a control device of an air conditioner and the air conditioner, wherein the control method comprises the following steps: in a refrigeration mode, acquiring outdoor environment temperature; if the outdoor environment temperature is equal to or less than a preset outdoor environment temperature threshold value, acquiring the middle temperature of the condenser; and controlling the rotating speed of the outdoor fan and the opening of the electronic expansion valve according to the temperature of the middle part of the condenser. According to the control method and device for the air conditioner and the air conditioner, when the outdoor environment temperature is equal to or less than the preset outdoor environment temperature threshold value, the rotating speed of the outdoor fan and the opening degree of the electronic expansion valve are controlled according to the middle temperature of the condenser, so that the air conditioner can stably and reliably operate at a low temperature, the cost is low, the production efficiency is high, and the air conditioner is convenient to maintain after sale.
Description
Technical Field
The invention relates to the technical field of electric appliances, in particular to a control method and device of an air conditioner and the air conditioner.
Background
When the air conditioner works at a low temperature (for example, the outdoor environment temperature is below minus 10 ℃), because the outdoor environment temperature is very low, the outdoor heat exchange is very sufficient, so that the refrigerant after heat exchange at the outdoor side has a very large supercooling degree, the temperature of the throttled refrigerant is very low, an indoor preset anti-freezing protection program is easily triggered, and frequent shutdown is caused, which not only causes great fluctuation of the indoor temperature, but also causes noise due to frequent startup and shutdown; meanwhile, the supercooling degree is too large, so that the refrigerant passing through the indoor side is not completely evaporated, and the liquid compression of the compressor affects the reliability and the service life of the compressor.
In the related art, the air conditioner can operate in a low-temperature environment by additionally arranging a temperature sensor or a pressure switch or changing the heat dissipation area of a part of condenser, but the schemes not only cause the cost to rise, but also reduce the production efficiency and increase the difficulty of after-sale maintenance.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art.
Therefore, a first objective of the present invention is to provide a control method for an air conditioner, which can control the rotation speed of an outdoor fan and the opening of an electronic expansion valve according to the temperature of the middle portion of a condenser when the outdoor ambient temperature is equal to or less than a preset outdoor ambient temperature threshold, so that the air conditioner can operate stably and reliably at a low temperature, and has the advantages of low cost, high production efficiency and convenient after-sales maintenance.
A second object of the present invention is to provide a control device for an air conditioner.
A third object of the present invention is to provide an air conditioner.
A fourth object of the invention is to propose an electronic device.
A fifth object of the present invention is to propose a computer-readable storage medium.
To achieve the above object, an embodiment of a first aspect of the present invention provides a control method for an air conditioner, including:
in a refrigeration mode, acquiring outdoor environment temperature;
if the outdoor environment temperature is equal to or less than a preset outdoor environment temperature threshold value, acquiring the middle temperature of the condenser;
and controlling the rotating speed of the outdoor fan and the opening of the electronic expansion valve according to the temperature of the middle part of the condenser.
According to the control method of the air conditioner provided by the embodiment of the invention, the outdoor environment temperature is obtained in the refrigeration mode; if the outdoor environment temperature is equal to or less than a preset outdoor environment temperature threshold value, acquiring the middle temperature of the condenser; the rotating speed of the outdoor fan and the opening of the electronic expansion valve are controlled according to the temperature of the middle part of the condenser, so that the air conditioner can stably and reliably operate at low temperature, the cost is low, the production efficiency is high, and the after-sale maintenance is convenient.
According to an embodiment of the present invention, the controlling the rotation speed of the outdoor fan and the opening degree of the electronic expansion valve according to the temperature of the middle portion of the condenser includes: acquiring the temperature of a corresponding preset saturated refrigerant according to the outdoor environment temperature; and if the temperature of the middle part of the condenser is higher than the temperature of the preset saturated refrigerant, controlling the outdoor fan to operate at the preset highest rotating speed, and controlling the opening of the electronic expansion valve according to the preset target exhaust temperature.
According to an embodiment of the present invention, the controlling the rotation speed of the outdoor fan and the opening degree of the electronic expansion valve according to the temperature of the middle portion of the condenser further includes: and if the temperature of the middle part of the condenser is equal to or greater than a first temperature threshold value and less than or equal to the temperature of the preset saturated refrigerant, controlling the outdoor fan to keep the current rotating speed to operate, and controlling the electronic expansion valve to keep the current opening degree, wherein the difference value between the temperature of the preset saturated refrigerant and the first temperature threshold value is equal to a first preset difference value.
According to an embodiment of the present invention, the controlling the rotation speed of the outdoor fan and the opening degree of the electronic expansion valve according to the temperature of the middle portion of the condenser further includes: if the temperature of the middle part of the condenser is greater than a second temperature threshold and less than the first temperature threshold, the rotating speed of the outdoor fan is controlled to be gradually reduced according to a first set value until the outdoor fan stops running, the opening degree of the electronic expansion valve is controlled to be gradually increased after the outdoor fan stops running for a first set time, the electronic expansion valve is controlled to keep the current opening degree when the temperature of the middle part of the condenser is greater than the temperature of the preset saturated refrigerant, the difference value between the temperature of the preset saturated refrigerant and the second temperature threshold is equal to a second preset difference value, and the second preset difference value is greater than the first preset difference value.
According to an embodiment of the present invention, the controlling the rotation speed of the outdoor fan and the opening degree of the electronic expansion valve according to the temperature of the middle portion of the condenser further includes: if the temperature of the middle part of the condenser is equal to or less than the second temperature threshold value, the rotating speed of the outdoor fan is controlled to be gradually reduced according to a second set value until the outdoor fan stops running, the opening degree of the electronic expansion valve is controlled to be gradually increased after the outdoor fan stops running for the first set time, the electronic expansion valve is controlled to keep the current opening degree when the temperature of the middle part of the condenser is greater than the temperature of the preset saturated refrigerant, and the second set value is greater than the first set value.
According to an embodiment of the present invention, the control method further includes: and if the outdoor environment temperature is greater than the outdoor environment temperature threshold value, controlling the outdoor fan to operate at the highest rotating speed, and controlling the opening degree of the electronic expansion valve according to the target exhaust temperature.
According to one embodiment of the present invention, the acquiring the outdoor ambient temperature includes: the outdoor ambient temperature is periodically acquired.
In order to achieve the above object, a second embodiment of the present invention provides a control device for an air conditioner, including:
the first acquisition module is used for acquiring the outdoor environment temperature in the refrigeration mode;
the second acquisition module is used for acquiring the middle temperature of the condenser if the outdoor environment temperature is equal to or less than a preset outdoor environment temperature threshold;
and the control module is used for controlling the rotating speed of the outdoor fan and the opening of the electronic expansion valve according to the temperature in the middle of the condenser.
According to the control device of the air conditioner, provided by the embodiment of the invention, the outdoor environment temperature is obtained in the refrigeration mode; if the outdoor environment temperature is equal to or less than a preset outdoor environment temperature threshold value, acquiring the middle temperature of the condenser; the rotating speed of the outdoor fan and the opening of the electronic expansion valve are controlled according to the temperature of the middle part of the condenser, so that the air conditioner can stably and reliably operate at low temperature, the cost is low, the production efficiency is high, and the after-sale maintenance is convenient.
According to an embodiment of the present invention, the control module is specifically configured to: acquiring the temperature of a corresponding preset saturated refrigerant according to the outdoor environment temperature; and if the temperature of the middle part of the condenser is higher than the temperature of the preset saturated refrigerant, controlling the outdoor fan to operate at the preset highest rotating speed, and controlling the opening of the electronic expansion valve according to the preset target exhaust temperature.
According to an embodiment of the present invention, the control module is specifically configured to: and if the temperature of the middle part of the condenser is equal to or greater than a first temperature threshold value and less than or equal to the temperature of the preset saturated refrigerant, controlling the outdoor fan to keep the current rotating speed to operate, and controlling the electronic expansion valve to keep the current opening degree, wherein the difference value between the temperature of the preset saturated refrigerant and the first temperature threshold value is equal to a first preset difference value.
According to an embodiment of the present invention, the control module is specifically configured to: if the temperature of the middle part of the condenser is greater than a second temperature threshold and less than the first temperature threshold, the rotating speed of the outdoor fan is controlled to be gradually reduced according to a first set value until the outdoor fan stops running, the opening degree of the electronic expansion valve is controlled to be gradually increased after the outdoor fan stops running for a first set time, the electronic expansion valve is controlled to keep the current opening degree when the temperature of the middle part of the condenser is greater than the temperature of the preset saturated refrigerant, the difference value between the temperature of the preset saturated refrigerant and the second temperature threshold is equal to a second preset difference value, and the second preset difference value is greater than the first preset difference value.
According to an embodiment of the present invention, the control module is specifically configured to: if the temperature of the middle part of the condenser is equal to or less than the second temperature threshold value, the rotating speed of the outdoor fan is controlled to be gradually reduced according to a second set value until the outdoor fan stops running, the opening degree of the electronic expansion valve is controlled to be gradually increased after the outdoor fan stops running for the first set time, the electronic expansion valve is controlled to keep the current opening degree when the temperature of the middle part of the condenser is greater than the temperature of the preset saturated refrigerant, and the second set value is greater than the first set value.
According to an embodiment of the invention, the control module is further configured to: and if the outdoor environment temperature is greater than the outdoor environment temperature threshold value, controlling the outdoor fan to operate at the highest rotating speed, and controlling the opening degree of the electronic expansion valve according to the target exhaust temperature.
According to an embodiment of the present invention, the first obtaining module is specifically configured to: the outdoor ambient temperature is periodically acquired.
To achieve the above object, an embodiment of a third aspect of the present invention provides an air conditioner, including: the control device of the air conditioner according to the embodiment of the second aspect of the present invention.
To achieve the above object, a fourth aspect of the present invention provides an electronic device, including: the invention relates to a control method of an air conditioner, which comprises a memory, a processor and a computer program stored on the memory and capable of running on the processor, wherein when the processor executes the program, the control method of the air conditioner is realized.
To achieve the above object, a fifth embodiment of the present invention provides a computer-readable storage medium, on which a computer program is stored, the program, when executed by a processor, implementing the control method of the air conditioner according to the first embodiment of the present invention.
Drawings
Fig. 1 is a system schematic of an air conditioner according to an embodiment of the present invention;
fig. 2 is a flowchart of a control method of an air conditioner according to an embodiment of the present invention;
fig. 3 is a flowchart of a control method of an air conditioner according to another embodiment of the present invention;
fig. 4 is a detailed flowchart of a control method of an air conditioner according to an embodiment of the present invention;
fig. 5 is a structural view of a control apparatus of an air conditioner according to an embodiment of the present invention;
fig. 6 is a structural view of an air conditioner according to an embodiment of the present invention;
FIG. 7 is a block diagram of an electronic device in accordance with one embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
The following describes a control method and device of an air conditioner and the air conditioner in an embodiment of the invention with reference to the accompanying drawings.
Fig. 1 is a system schematic diagram of an air conditioner according to an embodiment of the present invention, and as shown in fig. 1, the air conditioner according to the embodiment of the present invention includes: a liquid storage tank 10; a compressor 11; a four-way valve 12; a condenser 13; an outdoor ambient temperature sensor 14; a condenser middle temperature sensor 15; an electronic expansion valve 16; an evaporator 17; an indoor ambient temperature sensor 18; an evaporator mid-section temperature sensor 19.
The condenser middle temperature sensor 15 is arranged on the surface of a copper pipe in the middle of the condenser 13 and used for detecting the temperature in the middle of the condenser; the outdoor environment temperature sensor 14 is arranged on a fin on the windward side of the condenser 13 and used for detecting the outdoor environment temperature; the indoor environment temperature sensor 18 is arranged on the fin on the windward side of the evaporator 17 and used for detecting the indoor environment temperature; the evaporator middle temperature sensor 19 is arranged on the surface of the copper pipe in the middle of the evaporator 17 and used for detecting the temperature in the middle of the evaporator; the electronic expansion valve 16 is used for throttling and reducing pressure and adjusting according to the program of the system so as to use the operation of the air conditioner system; the liquid storage tank 10 is used for storing liquid refrigerant and separating gaseous refrigerant, the gaseous refrigerant returns to the compressor 11 again for circulation, and the liquid refrigerant is stored in the liquid storage tank 10.
When the air conditioner refrigerates, the high-temperature high-pressure gaseous refrigerant discharged from the compressor 11 flows through the four-way valve 12 to the condenser 13 side for heat dissipation, then is throttled by the electronic expansion valve 16 to form a low-temperature low-pressure refrigerant, then enters the indoor evaporator 17 for heat absorption and evaporation, and then enters the liquid storage tank 10, and the gaseous refrigerant returns to the compressor 11 for circulation.
When the air conditioner heats, high-temperature and high-pressure gaseous refrigerant discharged by the compressor 11 flows through the four-way valve 12 to the evaporator 17 side for heat dissipation, then is throttled by the electronic expansion valve 16 to form low-temperature and low-pressure refrigerant, the refrigerant enters the outdoor condenser 13 for heat absorption and evaporation, then enters the liquid storage tank 10, and the gaseous refrigerant returns to the compressor 11 for circulation.
Fig. 2 is a flowchart of a control method of an air conditioner according to an embodiment of the present invention, as shown in fig. 2, the control method including:
s101, in the refrigerating mode, obtaining the outdoor environment temperature T4.
In the embodiment of the present invention, in the cooling mode, the outdoor ambient temperature T4 may be periodically obtained by the outdoor ambient temperature sensor 14 shown in fig. 1, where the obtaining period is T.
And S102, if the outdoor environment temperature T4 is equal to or less than a preset outdoor environment temperature threshold value T40, acquiring a condenser middle temperature T3.
In the embodiment of the invention, the outdoor environment temperature threshold T40 can be preset, and the outdoor environment temperature threshold T40 can be specifically a temperature threshold of the air conditioner in a low-temperature refrigeration working state, such as-10 ℃. After the outdoor environment temperature T4 is obtained, the outdoor environment temperature T4 is compared with T40, if T4 is not greater than T40, it indicates that the air conditioner is in a low-temperature refrigeration working state at this time, and the condenser middle temperature T3 is obtained, specifically, the condenser middle temperature T3 can be obtained by the condenser middle temperature sensor 15 shown in fig. 1.
And S103, controlling the rotating speed of the outdoor fan and the opening degree of the electronic expansion valve according to the temperature T3 of the middle part of the condenser.
In the embodiment of the invention, the rotating speed of the outdoor fan and the opening degree of the electronic expansion valve are controlled according to the middle temperature T3 of the condenser, and after T time, the step is returned to the step S101 and the subsequent steps are executed. The rotating speed of the outdoor fan is controlled according to the temperature of the middle part of the condenser, so that the effects of energy saving and electricity saving can be achieved.
According to the control method of the air conditioner provided by the embodiment of the invention, the outdoor environment temperature is obtained in the refrigeration mode; if the outdoor environment temperature is equal to or less than a preset outdoor environment temperature threshold value, acquiring the middle temperature of the condenser; the rotating speed of the outdoor fan and the opening of the electronic expansion valve are controlled according to the temperature of the middle part of the condenser, so that the air conditioner can stably and reliably operate at low temperature, the cost is low, the production efficiency is high, and the after-sale maintenance is convenient.
Further, as shown in fig. 3, fig. 3 is a flowchart of a control method of an air conditioner according to another embodiment of the present invention, and the step S103 in the embodiment shown in fig. 2 may specifically include:
s201, obtaining the temperature T30 of the corresponding preset saturated refrigerant according to the outdoor environment temperature T4.
In the embodiment of the present invention, after the outdoor ambient temperature T4 is obtained by presetting the mapping relationship between the outdoor ambient temperature T4 and the temperature T30 of the saturated refrigerant in the program, the mapping relationship is queried, and the corresponding temperature T30 of the saturated refrigerant can be obtained.
S202, if the temperature T3 of the middle part of the condenser is greater than the temperature T30 of a preset saturated refrigerant, the outdoor fan is controlled to operate at a preset highest rotating speed, and the opening degree of the electronic expansion valve is controlled according to a preset target exhaust temperature.
In the embodiment of the invention, if T3 is more than T30, the outdoor fan is controlled to operate at the preset highest rotating speed, and the opening degree of the electronic expansion valve is controlled according to the preset target exhaust temperature.
Further, the step of S103 in the embodiment shown in fig. 2 may further include:
and if the middle temperature T3 of the condenser is equal to or greater than a first temperature threshold T30-delta T1 and less than or equal to the temperature T30 of the preset saturated refrigerant, controlling the outdoor fan to keep the current rotating speed to operate, and controlling the electronic expansion valve to keep the current opening, wherein the difference between the temperature T30 of the preset saturated refrigerant and the first temperature threshold T30-delta T1 is equal to a first preset difference delta T1.
In the embodiment of the invention, the first preset difference Δ T1 can be preset, and the first temperature threshold is T30- Δ T1. And if the T30-delta T1 is more than or equal to T3 is more than or equal to T30, controlling the outdoor fan to keep the current rotating speed to operate, and controlling the electronic expansion valve to keep the current opening.
Further, the step of S103 in the embodiment shown in fig. 2 may further include:
if the middle temperature T3 of the condenser is greater than a second temperature threshold T30-delta T2 and less than a first temperature threshold T30-delta T1, the rotating speed of the outdoor fan is controlled to be gradually reduced according to a first set value until the outdoor fan stops operating, the opening degree of the electronic expansion valve is controlled to be gradually increased after the outdoor fan stops operating for a first set time, the electronic expansion valve is controlled to keep the current opening degree when the middle temperature T3 of the condenser is greater than the temperature T30 of a preset saturated refrigerant, the difference between the temperature T30 of the preset saturated refrigerant and the second temperature threshold T30-delta T2 is equal to a second preset difference delta T2, and the second preset difference delta T2 is greater than the first preset difference delta T1.
In the embodiment of the invention, a second preset difference Δ T2 can be preset, and the second temperature threshold is T30- Δ T2, where Δ T2 > - Δ T1. And if T30-delta T2 < T3 < T30-delta T1, controlling the rotating speed of the outdoor fan to gradually decrease according to a first set value until the outdoor fan stops operating, for example, when the first set value is N gear/min, controlling the rotating speed of the outdoor fan to gradually decrease according to N gear/min until the outdoor fan stops operating. And after the outdoor fan stops operating for the first set time, controlling the opening degree of the electronic expansion valve to gradually increase, and controlling the electronic expansion valve to keep the current opening degree when T3 is greater than T30.
Further, the step of S103 in the embodiment shown in fig. 2 may further include:
and if the middle temperature T3 of the condenser is equal to or less than a second temperature threshold value T30-delta T2, controlling the rotating speed of the outdoor fan to gradually decrease according to a second set value until the outdoor fan stops operating, controlling the opening degree of the electronic expansion valve to gradually increase after the outdoor fan stops operating for a first set time, and controlling the electronic expansion valve to keep the current opening degree when the middle temperature T3 of the condenser is greater than the temperature T30 of a preset saturated refrigerant, wherein the second set value is greater than the first set value.
In the embodiment of the invention, if T3 is less than or equal to T30-delta T2, the rotating speed of the outdoor fan is controlled to be gradually reduced according to a second set value until the outdoor fan stops operating, for example, when the second set value is M grades/min, the rotating speed of the outdoor fan is controlled to be gradually reduced according to M grades/min until the outdoor fan stops operating, wherein the second set value is greater than the first set value. And after the outdoor fan stops operating for the first set time, controlling the opening degree of the electronic expansion valve to gradually increase, and controlling the electronic expansion valve to keep the current opening degree when T3 is greater than T30.
Further, on the basis of the embodiment shown in fig. 2, the control method further includes:
and if the outdoor environment temperature T4 is greater than the outdoor environment temperature threshold value T40, controlling the outdoor fan to operate at the highest rotating speed, and controlling the opening degree of the electronic expansion valve according to the target exhaust temperature.
In the embodiment of the invention, if T4 is more than T40, the air conditioner is in a non-low-temperature refrigeration working state, the outdoor fan is controlled to operate at the highest rotating speed, and the opening degree of the electronic expansion valve is controlled according to the target exhaust temperature. And after T time, return to step S101 and execute its subsequent steps.
The following describes in detail a control method of an air conditioner according to an embodiment of the present invention with reference to fig. 4, where fig. 4 is a specific flowchart of the control method of the air conditioner according to an embodiment of the present invention, and as shown in fig. 4, the control method specifically includes:
s301, under the refrigeration mode, periodically acquiring outdoor environment temperature T4, wherein the acquisition period is T.
S302, judging whether T4 is less than or equal to T40.
If yes, go to step S304; if not, the process proceeds to step S303.
And S303, controlling the outdoor fan to operate at the highest rotating speed, controlling the opening degree of the electronic expansion valve according to the target exhaust temperature, and returning to the step S301 after T time.
S304, obtaining the corresponding temperature T30 of the preset saturated refrigerant according to the outdoor environment temperature T4.
If T3 > T30, go to step S305;
if T30-delta T1 is less than or equal to T3 is less than or equal to T30, go to step S306;
if T30- Δ T2 < T3 < T30- Δ T1, go to step S307;
if T3 is less than or equal to T30- Δ T2, the process proceeds to step S308.
And S305, controlling the outdoor fan to operate at a preset highest rotating speed, and controlling the opening degree of the electronic expansion valve according to a preset target exhaust temperature. And returns to the step S301 after T time.
And S306, controlling the outdoor fan to keep the current rotating speed to operate, and controlling the electronic expansion valve to keep the current opening. And returns to the step S301 after T time.
And S307, controlling the rotating speed of the outdoor fan to gradually decrease according to a first set value until the outdoor fan stops operating, controlling the opening degree of the electronic expansion valve to gradually increase after the outdoor fan stops operating for a first set time, and controlling the electronic expansion valve to keep the current opening degree when the middle temperature T3 of the condenser is greater than the temperature T30 of a preset saturated refrigerant. And returns to the step S301 after T time.
And S308, controlling the rotating speed of the outdoor fan to gradually decrease according to a second set value until the outdoor fan stops running, controlling the opening degree of the electronic expansion valve to gradually increase after the outdoor fan stops running for a first set time, and controlling the electronic expansion valve to keep the current opening degree when the middle temperature T3 of the condenser is greater than the temperature T30 of a preset saturated refrigerant. And returns to the step S301 after T time.
According to the control method of the air conditioner provided by the embodiment of the invention, the outdoor environment temperature is obtained in the refrigeration mode; if the outdoor environment temperature is equal to or less than a preset outdoor environment temperature threshold value, acquiring the middle temperature of the condenser; the rotating speed of the outdoor fan and the opening of the electronic expansion valve are controlled according to the temperature of the middle part of the condenser, so that the air conditioner can stably and reliably operate at low temperature, the cost is low, the production efficiency is high, and the after-sale maintenance is convenient.
Fig. 5 is a structural view of a control apparatus of an air conditioner according to an embodiment of the present invention, as shown in fig. 5, the control apparatus including:
a first obtaining module 21, configured to obtain an outdoor ambient temperature in a cooling mode;
a second obtaining module 22, configured to obtain a middle temperature of the condenser if the outdoor environment temperature is equal to or less than a preset outdoor environment temperature threshold;
and the control module 23 is used for controlling the rotating speed of the outdoor fan and the opening of the electronic expansion valve according to the temperature in the middle of the condenser.
It should be noted that the foregoing explanation of the embodiment of the control method of the air conditioner is also applicable to the control device of the air conditioner of this embodiment, and details are not repeated here.
According to the control device of the air conditioner, provided by the embodiment of the invention, the outdoor environment temperature is obtained in the refrigeration mode; if the outdoor environment temperature is equal to or less than a preset outdoor environment temperature threshold value, acquiring the middle temperature of the condenser; the rotating speed of the outdoor fan and the opening of the electronic expansion valve are controlled according to the temperature of the middle part of the condenser, so that the air conditioner can stably and reliably operate at low temperature, the cost is low, the production efficiency is high, and the after-sale maintenance is convenient.
Further, in a possible implementation manner of the embodiment of the present invention, the control module 23 is specifically configured to: acquiring the temperature of a corresponding preset saturated refrigerant according to the outdoor environment temperature; and if the temperature of the middle part of the condenser is higher than the temperature of a preset saturated refrigerant, controlling the outdoor fan to operate at a preset highest rotating speed, and controlling the opening of the electronic expansion valve according to a preset target exhaust temperature.
Further, in a possible implementation manner of the embodiment of the present invention, the control module 23 is specifically configured to: and if the temperature of the middle part of the condenser is equal to or more than the first temperature threshold and less than or equal to the temperature of the preset saturated refrigerant, controlling the outdoor fan to keep the current rotating speed to operate, controlling the electronic expansion valve to keep the current opening degree, and enabling the difference value between the temperature of the preset saturated refrigerant and the first temperature threshold to be equal to a first preset difference value.
Further, in a possible implementation manner of the embodiment of the present invention, the control module 23 is specifically configured to: if the temperature of the middle part of the condenser is larger than the second temperature threshold and smaller than the first temperature threshold, the rotating speed of the outdoor fan is controlled to be gradually reduced according to a first set value until the outdoor fan stops running, the opening degree of the electronic expansion valve is controlled to be gradually increased after the outdoor fan stops running for a first set time, the electronic expansion valve is controlled to keep the current opening degree when the temperature of the middle part of the condenser is larger than the temperature of a preset saturated refrigerant, the difference value between the temperature of the preset saturated refrigerant and the second temperature threshold is equal to a second preset difference value, and the second preset difference value is larger than the first preset difference value.
Further, in a possible implementation manner of the embodiment of the present invention, the control module 23 is specifically configured to: and if the temperature of the middle part of the condenser is equal to or less than a second temperature threshold value, controlling the rotating speed of the outdoor fan to gradually decrease according to a second set value until the outdoor fan stops operating, controlling the opening degree of the electronic expansion valve to gradually increase after the outdoor fan stops operating for a first set time, and controlling the electronic expansion valve to keep the current opening degree when the temperature of the middle part of the condenser is greater than the temperature of a preset saturated refrigerant, wherein the second set value is greater than the first set value.
Further, in a possible implementation manner of the embodiment of the present invention, the control module 23 is further configured to: and if the outdoor environment temperature is greater than the outdoor environment temperature threshold value, controlling the outdoor fan to operate at the highest rotating speed, and controlling the opening degree of the electronic expansion valve according to the target exhaust temperature.
Further, in a possible implementation manner of the embodiment of the present invention, the first obtaining module 21 is specifically configured to: the outdoor ambient temperature is periodically acquired.
It should be noted that the foregoing explanation of the embodiment of the control method of the air conditioner is also applicable to the control device of the air conditioner of this embodiment, and details are not repeated here.
According to the control device of the air conditioner, provided by the embodiment of the invention, the outdoor environment temperature is obtained in the refrigeration mode; if the outdoor environment temperature is equal to or less than a preset outdoor environment temperature threshold value, acquiring the middle temperature of the condenser; the rotating speed of the outdoor fan and the opening of the electronic expansion valve are controlled according to the temperature of the middle part of the condenser, so that the air conditioner can stably and reliably operate at low temperature, the cost is low, the production efficiency is high, and the after-sale maintenance is convenient.
In order to implement the above embodiment, an air conditioner 30 according to an embodiment of the present invention is further provided, as shown in fig. 6, including: the control device 31 of the air conditioner shown in the above embodiment.
In order to implement the foregoing embodiment, the embodiment of the present invention further provides an electronic device 40, as shown in fig. 7, which includes a memory 41 and a processor 42. The memory 41 stores thereon a computer program operable on the processor 42, and the processor 42 executes the program to implement the control method of the air conditioner as shown in the above embodiments.
In order to implement the above embodiments, an embodiment of the present invention also proposes a non-transitory computer-readable storage medium having stored thereon a computer program that, when executed by a processor, implements the control method of the air conditioner as shown in the above embodiments.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (9)
1. A method of controlling an air conditioner, comprising:
in a refrigeration mode, acquiring outdoor environment temperature;
if the outdoor environment temperature is equal to or less than a preset outdoor environment temperature threshold value, acquiring the middle temperature of the condenser;
controlling the rotating speed of an outdoor fan and the opening of an electronic expansion valve according to the temperature of the middle part of the condenser;
the rotation speed of the outdoor fan and the opening degree of the electronic expansion valve are controlled according to the temperature in the middle of the condenser, and the method comprises the following steps:
acquiring the temperature of a corresponding preset saturated refrigerant according to the outdoor environment temperature;
if the temperature of the middle part of the condenser is higher than the temperature of the preset saturated refrigerant, controlling the outdoor fan to operate at the preset highest rotating speed, and controlling the opening of the electronic expansion valve according to the preset target exhaust temperature;
if the temperature of the middle part of the condenser is equal to or greater than a first temperature threshold value and less than or equal to the temperature of the preset saturated refrigerant, controlling the outdoor fan to keep the current rotating speed to operate, and controlling the electronic expansion valve to keep the current opening degree, wherein the difference value between the temperature of the preset saturated refrigerant and the first temperature threshold value is equal to a first preset difference value;
if the temperature of the middle part of the condenser is greater than a second temperature threshold and less than the first temperature threshold, controlling the rotating speed of the outdoor fan to gradually decrease according to a first set value until the outdoor fan stops running, controlling the opening degree of the electronic expansion valve to gradually increase after the outdoor fan stops running for a first set time, and controlling the electronic expansion valve to keep the current opening degree when the temperature of the middle part of the condenser is greater than the temperature of a preset saturated refrigerant, wherein the difference value between the temperature of the preset saturated refrigerant and the second temperature threshold is equal to a second preset difference value, and the second preset difference value is greater than the first preset difference value;
if the temperature of the middle part of the condenser is equal to or less than the second temperature threshold value, the rotating speed of the outdoor fan is controlled to be gradually reduced according to a second set value until the outdoor fan stops running, the opening degree of the electronic expansion valve is controlled to be gradually increased after the outdoor fan stops running for the first set time, the electronic expansion valve is controlled to keep the current opening degree when the temperature of the middle part of the condenser is greater than the temperature of the preset saturated refrigerant, and the second set value is greater than the first set value.
2. The control method according to claim 1, characterized by further comprising:
and if the outdoor environment temperature is greater than the outdoor environment temperature threshold value, controlling the outdoor fan to operate at the highest rotating speed, and controlling the opening degree of the electronic expansion valve according to the target exhaust temperature.
3. The control method of claim 1, wherein said obtaining an outdoor ambient temperature comprises:
the outdoor ambient temperature is periodically acquired.
4. A control apparatus of an air conditioner, comprising:
the first acquisition module is used for acquiring the outdoor environment temperature in the refrigeration mode;
the second acquisition module is used for acquiring the middle temperature of the condenser if the outdoor environment temperature is equal to or less than a preset outdoor environment temperature threshold;
the control module is used for controlling the rotating speed of the outdoor fan and the opening of the electronic expansion valve according to the temperature in the middle of the condenser;
the control module is specifically configured to:
acquiring the temperature of a corresponding preset saturated refrigerant according to the outdoor environment temperature;
if the temperature of the middle part of the condenser is higher than the temperature of the preset saturated refrigerant, controlling the outdoor fan to operate at the preset highest rotating speed, and controlling the opening of the electronic expansion valve according to the preset target exhaust temperature;
if the temperature of the middle part of the condenser is equal to or greater than a first temperature threshold value and less than or equal to the temperature of the preset saturated refrigerant, controlling the outdoor fan to keep the current rotating speed to operate, and controlling the electronic expansion valve to keep the current opening degree, wherein the difference value between the temperature of the preset saturated refrigerant and the first temperature threshold value is equal to a first preset difference value;
if the temperature of the middle part of the condenser is greater than a second temperature threshold and less than the first temperature threshold, controlling the rotating speed of the outdoor fan to gradually decrease according to a first set value until the outdoor fan stops running, controlling the opening degree of the electronic expansion valve to gradually increase after the outdoor fan stops running for a first set time, and controlling the electronic expansion valve to keep the current opening degree when the temperature of the middle part of the condenser is greater than the temperature of a preset saturated refrigerant, wherein the difference value between the temperature of the preset saturated refrigerant and the second temperature threshold is equal to a second preset difference value, and the second preset difference value is greater than the first preset difference value;
if the temperature of the middle part of the condenser is equal to or less than the second temperature threshold value, the rotating speed of the outdoor fan is controlled to be gradually reduced according to a second set value until the outdoor fan stops running, the opening degree of the electronic expansion valve is controlled to be gradually increased after the outdoor fan stops running for the first set time, the electronic expansion valve is controlled to keep the current opening degree when the temperature of the middle part of the condenser is greater than the temperature of the preset saturated refrigerant, and the second set value is greater than the first set value.
5. The control device of claim 4, wherein the control module is further configured to:
and if the outdoor environment temperature is greater than the outdoor environment temperature threshold value, controlling the outdoor fan to operate at the highest rotating speed, and controlling the opening degree of the electronic expansion valve according to the target exhaust temperature.
6. The control device according to claim 4, wherein the first obtaining module is specifically configured to:
the outdoor ambient temperature is periodically acquired.
7. An air conditioner, comprising: the control device of an air conditioner according to any one of claims 4 to 6.
8. An electronic device, comprising: a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the method of controlling an air conditioner according to any one of claims 1 to 3 when executing the program.
9. A computer-readable storage medium on which a computer program is stored, characterized in that the program, when executed by a processor, implements the control method of an air conditioner according to any one of claims 1 to 3.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910227622.0A CN109945401B (en) | 2019-03-25 | 2019-03-25 | Control method and device of air conditioner and air conditioner |
| EP19922216.7A EP3929500B1 (en) | 2019-03-25 | 2019-07-29 | Air conditioner control method and device, and air conditioner |
| ES19922216T ES2948266T3 (en) | 2019-03-25 | 2019-07-29 | Air conditioner control procedure and device, and air conditioner |
| CA3134876A CA3134876C (en) | 2019-03-25 | 2019-07-29 | Air conditioner control method and device and air conditioner |
| PCT/CN2019/098237 WO2020191976A1 (en) | 2019-03-25 | 2019-07-29 | Air conditioner control method and device, and air conditioner |
| US17/482,927 US20220010979A1 (en) | 2019-03-25 | 2021-09-23 | Air conditioner control method and device and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910227622.0A CN109945401B (en) | 2019-03-25 | 2019-03-25 | Control method and device of air conditioner and air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109945401A CN109945401A (en) | 2019-06-28 |
| CN109945401B true CN109945401B (en) | 2020-08-25 |
Family
ID=67011446
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910227622.0A Active CN109945401B (en) | 2019-03-25 | 2019-03-25 | Control method and device of air conditioner and air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109945401B (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA3134876C (en) * | 2019-03-25 | 2023-09-26 | Gd Midea Air-Conditioning Equipment Co., Ltd. | Air conditioner control method and device and air conditioner |
| CN110470006A (en) * | 2019-08-02 | 2019-11-19 | 青岛海尔空调器有限总公司 | Control method and device, air-conditioning for air-conditioner defrosting |
| CN110454939B (en) * | 2019-08-05 | 2021-02-26 | 广东美的制冷设备有限公司 | Air conditioner and control method and control device thereof |
| CN110726202A (en) * | 2019-10-25 | 2020-01-24 | 宁波奥克斯电气股份有限公司 | External fan control method of air conditioner and air conditioner |
| CN111219840B (en) * | 2019-11-27 | 2021-09-21 | 珠海格力电器股份有限公司 | Ultralow-temperature refrigeration control method and device and air conditioning equipment |
| CN111023423B (en) * | 2019-12-27 | 2021-05-14 | 宁波奥克斯电气股份有限公司 | Control method and device for electronic expansion valve of air conditioner, medium and air conditioner |
| CN111578458B (en) * | 2020-05-13 | 2022-03-01 | Tcl空调器(中山)有限公司 | Control method of air conditioner, air conditioner and computer storage medium |
| CN113739378B (en) * | 2020-05-29 | 2022-09-27 | 广东美的制冷设备有限公司 | Control method of air conditioning system, air conditioning system and storage medium |
| CN111780333B (en) * | 2020-07-14 | 2021-11-05 | 珠海格力节能环保制冷技术研究中心有限公司 | Control method and device of air conditioner and air conditioner equipment |
| CN111998500B (en) * | 2020-09-03 | 2021-10-12 | 宁波奥克斯电气股份有限公司 | Control method and device for outdoor fan of air conditioner refrigeration and air conditioner |
| CN112963934B (en) * | 2021-03-17 | 2022-10-04 | 广东Tcl智能暖通设备有限公司 | Air conditioner control method and device, air conditioner and storage medium |
| CN113883765B (en) * | 2021-10-21 | 2022-08-16 | 珠海格力电器股份有限公司 | Oil return control method, device and equipment, air conditioning system and storage medium |
| CN115289734B (en) * | 2022-08-16 | 2023-07-14 | 宁波奥克斯电气股份有限公司 | Compressor exhaust temperature control method and device, storage medium and air conditioner |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100606267B1 (en) * | 2004-06-18 | 2006-08-01 | 위니아만도 주식회사 | Air conditioner capable of continuous cooling operation |
| JP4766256B2 (en) * | 2006-07-24 | 2011-09-07 | 株式会社富士通ゼネラル | Control method of 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 |
| CN103411292B (en) * | 2013-08-30 | 2016-04-06 | 广东志高暖通设备股份有限公司 | A kind of control method of low temperature refrigeration of air conditioner |
-
2019
- 2019-03-25 CN CN201910227622.0A patent/CN109945401B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN109945401A (en) | 2019-06-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109945401B (en) | Control method and device of air conditioner and air conditioner | |
| US20220010979A1 (en) | Air conditioner control method and device and air conditioner | |
| CN102032649B (en) | Defrosting control method for air-conditioning system | |
| CN109945389B (en) | Control method and device of air conditioner and air conditioner | |
| CN109373497B (en) | Refrigerant quantity adjusting method, device and system of temperature adjusting equipment and air conditioner | |
| CN109737558B (en) | Air conditioner, defrosting control method, and computer-readable storage medium | |
| CN105333563A (en) | Refrigeration control method and device and air conditioner | |
| WO2014203828A1 (en) | Air conditioner and method for controlling air conditioner | |
| CN103411341A (en) | Constant-temperature dehumidifying air conditioner and dehumidifying method | |
| CN108954710A (en) | A kind of air conditioner low-temperature heating starting method and air conditioner | |
| JP5492625B2 (en) | Air conditioner | |
| JP5180680B2 (en) | Refrigeration cycle | |
| CN115183400B (en) | Air conditioner and defrosting control method thereof | |
| WO2016016918A1 (en) | Air conditioning device | |
| CN111595001A (en) | Air conditioning system, control method thereof, control device thereof and readable storage medium | |
| JP2012202581A (en) | Refrigeration cycle device and control method thereof | |
| CN111536666B (en) | Air conditioning system | |
| JP2011007482A (en) | Air conditioner | |
| CN103759395A (en) | Adjusting system adapting to working condition changes of air conditioner | |
| US9903627B2 (en) | Method of operating an air conditioning system including reducing the energy consumed by the compressor crank case heaters | |
| CN112178894B (en) | Control method, air conditioner, and computer-readable storage medium | |
| CN203719044U (en) | Conditioning system adaptive to working condition changes of air conditioner | |
| CN114963412B (en) | Air conditioner and snow prevention air conditioning system | |
| CN113587381B (en) | Method of controlling fan motor of air conditioner, air conditioner and computer-readable storage medium | |
| JP2014105888A (en) | Air conditioner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |