CN109708225B - Air conditioner, control method and device thereof and readable storage medium - Google Patents
Air conditioner, control method and device thereof and readable storage medium Download PDFInfo
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- CN109708225B CN109708225B CN201811632514.3A CN201811632514A CN109708225B CN 109708225 B CN109708225 B CN 109708225B CN 201811632514 A CN201811632514 A CN 201811632514A CN 109708225 B CN109708225 B CN 109708225B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
The invention discloses an air conditioner, which comprises an indoor unit and a heat exchange device, wherein the indoor unit comprises an indoor unit shell, an evaporator and a compressor, the indoor unit shell is provided with a first air return opening and a first air outlet, a communicated air return cavity and an accommodating cavity are formed in the indoor unit shell, the evaporator and the compressor are arranged in the accommodating cavity, the first air return opening is communicated with the air return cavity, and the first air outlet is communicated with the accommodating cavity; the heat exchange device comprises a fresh air duct, a return air duct and a heat exchange core body, the heat exchange core body is arranged between the fresh air duct and the return air duct, the fresh air duct is provided with a fresh air inlet and a fresh air outlet, and the return air duct is provided with a second return air inlet and a second air outlet communicated with the return air cavity. The invention also discloses an air conditioner control method, an air conditioner control device and a readable storage medium. The invention ensures the air quality in the machine room and saves the energy consumption of the air conditioner.
Description
Technical Field
The present invention relates to the field of air conditioners, and in particular, to an air conditioner, an air conditioner control method, an air conditioner control device, and a readable storage medium.
Background
The communication machine room has high requirements on cleanliness and temperature and humidity, the design is relatively closed, the heating of components of machine room equipment is relatively high, and machine room air conditioners are required for refrigeration all the year round.
And under the condition of low outdoor environment temperature, the energy efficiency of refrigeration and cooling of the air conditioner in the machine room is low. At present, in order to save energy consumption, some air conditioners directly send outside fresh air into a machine room when the outdoor temperature is lower than the indoor temperature. However, the requirements of the equipment in the machine room on the temperature, humidity and cleanliness of air are high, and the air quality in the machine room cannot be guaranteed by the above mode.
The above is only for the purpose of assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above is prior art.
Disclosure of Invention
The invention mainly aims to provide an air conditioner, aiming at saving the energy consumption of the air conditioner while ensuring the air quality in a machine room.
To achieve the above object, the present invention provides an air conditioner including:
the indoor unit comprises an indoor unit shell, an evaporator and a compressor connected with the evaporator, wherein the indoor unit shell is provided with a first air return opening and a first air outlet which are communicated with an indoor environment, a return air cavity and an accommodating cavity communicated with the return air cavity are formed in the indoor unit shell, the evaporator and the compressor are arranged in the accommodating cavity, the first air return opening is communicated with the return air cavity, and the first air outlet is communicated with the accommodating cavity;
heat exchange device, heat exchange device includes shell and heat exchange core, be formed with new trend wind channel and return air wind channel in the shell, the heat exchange core is located in the shell and be located the new trend wind channel with between the return air wind channel, the new trend wind channel have be used for with the new trend import and the new trend export of outdoor environment intercommunication, the return air wind channel have be used for with the second return air inlet of indoor environment intercommunication and with the second air outlet of return air chamber intercommunication.
Optionally, the indoor unit further includes a first air deflector disposed at the first air return opening, and the heat exchange device further includes a second air deflector disposed at the fresh air inlet and a third air deflector disposed at the second air return opening.
Optionally, the heat exchange device further comprises a first fan and a second fan, the first fan is located in the fresh air duct and close to the fresh air inlet, and the second fan is located in the return air duct and close to the second return air inlet.
Optionally, the heat exchange device further comprises a first partition plate, a second partition plate, a first pipe and a second pipe, the heat exchange core body is coated on the outer walls of the first pipeline and the second pipeline, the first partition plate is respectively connected with the inner wall of the shell and the outer surface of the heat exchange core body to form a separated fresh air inlet cavity and a separated return air inlet cavity, the fresh air inlet cavity is communicated with the fresh air inlet, the return air inlet cavity is communicated with the second return air port, the second partition board is respectively connected with the inner wall of the shell and the outer surface of the heat exchange core body to form a separated fresh air outlet cavity and a separated return air outlet cavity, the fresh air outlet cavity is communicated with the fresh air outlet, the return air outlet cavity is communicated with the second air outlet, the first pipeline is communicated with the fresh air inlet cavity and the fresh air outlet cavity to form the fresh air channel, the second pipeline is communicated with the return air inlet cavity and the return air outlet cavity to form the return air duct.
In addition, in order to achieve the above object, the present application also proposes an air conditioner control method based on the air conditioner as described above, characterized by comprising the steps of:
in a refrigeration mode, acquiring indoor ambient temperature and outdoor ambient temperature;
judging whether the outdoor environment temperature is lower than the indoor environment temperature;
if so, controlling the second air deflector to operate so as to open the fresh air inlet, and controlling the third air deflector to operate so as to open the second air return inlet;
acquiring the current temperature of an air return cavity of the indoor unit;
judging whether the current temperature of the return air cavity is less than or equal to a set temperature;
and when the current temperature of the return air cavity is less than or equal to the set temperature, controlling the compressor not to start.
Optionally, when the heat exchange device further includes a first fan and a second fan, the step of controlling the second air deflector to operate to open the fresh air inlet and the step of controlling the third air deflector to operate to open the second air return inlet includes:
and controlling the second air deflector to operate so as to open the fresh air inlet, controlling the third air deflector to operate so as to open the second air return inlet, and simultaneously controlling the first fan and the second fan to start.
Optionally, the step of controlling the second air deflector to operate to open the fresh air inlet, the step of controlling the third air deflector to operate to open the second air return inlet, and the step of controlling the first fan and the second fan to start at the same time includes:
and controlling the second air deflector to operate so as to open the fresh air inlet to a first preset opening degree, controlling the third air deflector to operate so as to open the second air return inlet to a second preset opening degree, controlling the first air deflector to operate so as to open the first air return inlet to a third preset opening degree, and simultaneously controlling the first fan and the second fan to operate according to corresponding preset rotating speeds respectively.
Optionally, after the step of determining whether the current temperature of the return air cavity is less than or equal to the set temperature, the method further includes:
when the current temperature of the air return cavity is higher than a set temperature, judging whether the current opening degrees of the fresh air inlet and the second air return inlet reach the maximum opening degree, judging whether the current rotating speed of the first fan and the current rotating speed of the second fan reach the maximum rotating speed, and judging whether the current opening degree of the first air return inlet reaches the minimum opening degree;
when the current opening degree of the fresh air inlet and the current opening degree of the second air return inlet do not reach the maximum opening degree, controlling the second air deflector and the third air deflector to operate so as to increase the current opening degrees of the fresh air inlet and the second air return inlet;
when the current rotating speed of the first fan and the current rotating speed of the second fan do not reach the maximum rotating speed, controlling the first fan and the second fan to increase the current rotating speed;
when the current opening degree of the first air return opening does not reach the minimum opening degree, controlling the first air deflector to operate so as to reduce the current opening degree of the first air return opening;
and returning to execute the step of judging whether the current temperature of the return air cavity is less than or equal to the set temperature.
Optionally, after the step of determining whether the current opening degrees of the fresh air inlet and the second air return inlet both reach the maximum opening degree, determining whether the current rotation speed of the first fan and the current rotation speed of the second fan both reach the maximum rotation speed, and determining whether the current opening degree of the first air return inlet reaches the minimum opening degree, the method further includes:
and when the current opening degree of the fresh air inlet and the current opening degree of the second air return inlet both reach the maximum opening degree, the current rotating speed of the first fan and the current rotating speed of the second fan both reach the maximum rotating speed, and the compressor is controlled to start when the current opening degree of the first air inlet reaches the minimum opening degree.
Optionally, after the step of controlling the second air deflector to operate to open the fresh air inlet and controlling the third air deflector to operate to open the second air return inlet, the method further includes:
acquiring the air outlet temperature of the second air outlet;
judging whether the outlet air temperature is greater than or equal to a set temperature;
if so, controlling the second air deflector to operate so as to open the fresh air inlet to the maximum opening degree, controlling the third air deflector so as to open the second air return inlet to the maximum opening degree, and controlling the compressor to start;
and if not, executing the step of acquiring the current temperature of the return air cavity of the indoor unit.
Optionally, after the step of determining whether the outdoor environment temperature is less than the indoor environment temperature, the method further includes:
if not, controlling the first air deflector to operate so as to open the first air return opening, controlling the second air deflector to operate so as to close the fresh air inlet, and controlling the third air deflector to operate so as to close the second air return opening;
and controlling the compressor to start.
Optionally, before the step of controlling the second air deflector to operate to open the fresh air inlet and the third air deflector to operate to open the second air return inlet, the method further includes:
when the outdoor environment temperature is lower than the indoor environment temperature, judging whether the difference value between the outdoor environment temperature and the indoor environment temperature is larger than or equal to a preset temperature difference;
and if the difference value is larger than or equal to the preset temperature difference, executing the step of controlling the second air deflector to operate so as to open the fresh air inlet, and controlling the third air deflector to operate so as to open the second air return inlet.
And if the difference value is smaller than the preset temperature difference, executing the step of controlling the first air deflector to operate so as to open the first air return opening, controlling the second air deflector to operate so as to close the fresh air inlet, and controlling the third air deflector to operate so as to close the second air return opening.
Further, in order to achieve the above object, the present application also provides an air conditioner control device including: the air conditioner control method comprises a memory, a processor and an air conditioner control program stored on the memory and capable of running on the processor, wherein the air conditioner control program realizes the steps of the air conditioner control method according to any one of the above items when being executed by the processor.
Further, in order to achieve the above object, the present application also provides a readable storage medium having stored thereon an air conditioner control program, which when executed by a processor, implements the steps of the air conditioner control method as recited in any one of the above.
The air conditioner provided by the embodiment of the invention is characterized in that the heat exchange device is additionally arranged, the return air duct of the heat exchange device is communicated with the indoor environment through the second return air inlet, the return air duct is communicated with the first air outlet of the indoor unit, the inlet and outlet of the fresh air duct are respectively communicated with the outdoor environment, when the outdoor environment temperature is lower than the indoor environment temperature and the air conditioner needs to be refrigerated to run to reduce the indoor temperature, air with higher indoor temperature enters the return air duct, air with lower outdoor temperature enters the fresh air duct, the fresh air duct and the return air duct exchange heat in the heat exchange core body, the air in the fresh air duct can reduce the temperature of the air in the return air duct, cold air in the return air duct enters the return air cavity, and if the temperature of the return air cavity reaches the set temperature, a compressor of the air conditioner can directly send cold air meeting the refrigeration requirement into a room without being, in the process, air in the fresh air duct cannot enter the room to influence the indoor air pressure and air quality, so that the air quality in the machine room is ensured, and the energy consumption of the air conditioner is saved.
Drawings
FIG. 1 is a schematic structural diagram of an air conditioner according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a hardware configuration of an air conditioner control device according to an embodiment of the present invention;
fig. 3 is a flowchart illustrating a control method of an air conditioner according to an embodiment of the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The main solution of the embodiment of the present invention is to provide an air conditioner, which includes an indoor unit 100 and a heat exchange device 200, where the indoor unit 100 includes an indoor unit casing 110, an evaporator 130, a compressor (not shown) connected to the evaporator 130, and an air supply fan 120, the indoor unit casing 110 is provided with a first air return opening 111 and a first air outlet 112 for communicating with an indoor environment, a communicated air return cavity 101 and an accommodating cavity 102 are formed in the indoor unit casing 110, the evaporator 130 and the compressor (not shown) are disposed in the accommodating cavity 102, the air supply fan 120 is disposed in the accommodating cavity 102 and is close to the first air outlet 112, the first air return opening 111 is communicated with the air return cavity 101, and the first air outlet 112 is communicated with the accommodating cavity 102; the heat exchange device 200 comprises a fresh air duct 210, a return air duct 220 and a heat exchange core 202, wherein the heat exchange core 202 is arranged between the fresh air duct 210 and the return air duct 220, the fresh air duct 210 is provided with a fresh air inlet 211 and a fresh air outlet 212 which are used for being communicated with an outdoor environment, and the return air duct 220 is provided with a second return air inlet 221 which is used for being communicated with an indoor environment and a second air outlet 222 which is communicated with the return air cavity 101.
Because directly send into the lower new trend of outdoor temperature indoor reduction indoor temperature among the prior art, can reduce indoor air quality, influence the equipment operation in the computer lab.
The invention provides the solution, which can ensure the air quality in the machine room and save the energy consumption of the air conditioner.
The embodiment of the invention provides an air conditioner. Specifically, the air conditioner is a precision air conditioner which is applied to a communication machine room and the like and is provided with spaces such as electronic equipment, precision instruments and the like.
In the embodiment of the present invention, as shown in fig. 1, the air conditioner includes an indoor unit 100, a heat exchanging device 200, an air conditioner control device, and a refrigerant circulation circuit (not shown).
The refrigerant circulation circuit (not shown) includes a compressor (not shown), an evaporator 130, a throttle device, and a condenser, which are connected by pipes. The indoor unit 100 includes an indoor unit casing 110, an evaporator 130, a blower fan 120, and a compressor (not shown). The indoor unit casing 110 is provided with a first air return opening 111 and a first air outlet opening 112 for communicating with an indoor environment, the indoor unit casing 110 is formed with an air return cavity 101 and a receiving cavity 102 communicating with the air return cavity 101, and the evaporator 130 and the compressor (not shown) are arranged in the receiving cavity 102.
The indoor environment is defined as a space where the indoor unit group 100 is located. The first air return opening 111 and the first air outlet 112 are both communicated with the indoor environment, and in the cooling mode of the air conditioner, the air supply fan 120 of the air conditioner is turned on, so that air in the indoor environment can enter the air return cavity 101 of the indoor unit casing 110 from the first air return opening 111 and then enter the accommodating cavity 102 from the air return cavity 101. When a compressor (not shown) in the accommodating cavity 102 is turned on, the refrigerant circulates in a refrigerant circulation loop (not shown), the refrigerant flowing through the evaporator 130 can exchange heat with air in the accommodating cavity 102 to reduce the temperature of the air in the accommodating cavity 102, when the temperature is reduced to be less than or equal to the set temperature of the air conditioner, the compressor may not be started, and the air meeting the set temperature can also be delivered to the indoor environment from the first air outlet 112, so that the temperature of the air in the indoor environment can be adjusted by the air conditioner.
The heat exchange device 200 comprises a shell 201 and a heat exchange core 202, a fresh air duct 210 and a return air duct 220 are formed in the shell 201, the heat exchange core 202 is arranged in the shell and located between the fresh air duct 210 and the return air duct 220, the fresh air duct 210 is provided with a fresh air inlet 211 and a fresh air outlet 212 which are used for being communicated with an outdoor environment, and the return air duct 220 is provided with a second return air inlet 221 which is used for being communicated with an indoor environment and a second air outlet 222 which is communicated with the return air cavity 101.
The indoor environment is defined as a space other than the space where the indoor unit group 100 is located. When the outdoor temperature is lower than the indoor temperature and the air conditioner operates in the cooling mode, the air with lower temperature in the outdoor environment can enter the fresh air duct 210 from the fresh air inlet 211, the air with higher temperature in the indoor environment can enter the return air duct 220 from the second return air inlet 221, and the air with lower temperature in the fresh air duct 210 can exchange heat with the air with higher temperature in the return air duct 220 in the heat exchange core 202. After heat exchange, the air in the fresh air duct 210 is discharged to the outdoor environment from the fresh air outlet 212, the temperature of the air in the return air duct 220 after heat exchange is reduced and can enter the return air cavity 101 of the indoor unit 100 through the second air outlet 222, and if the temperature of the air in the return air cavity 101 is lower than or equal to the set temperature of the air conditioner at this time, the air in the return air cavity 101 is directly generated by the turned-on air supply fan 120 without turning on a compressor (not shown), so that the air in the return air cavity 101 flows through the accommodating cavity 102 and is delivered to the indoor environment from the first air outlet 112.
In the air conditioner provided by the embodiment of the invention, by adding the heat exchange device 200, the return air duct 220 of the heat exchange device 200 is communicated with the indoor environment through the second return air inlet 221, the return air duct 220 is communicated with the first air outlet 112 of the indoor unit 100, the air inlet and the air outlet of the fresh air duct 210 are respectively communicated with the outdoor environment, when the outdoor environment temperature is lower than the indoor environment temperature and the air conditioner needs to perform cooling operation to reduce the indoor temperature, air with higher indoor temperature enters the return air duct 220, air with lower outdoor temperature enters the fresh air duct 210, the fresh air duct 210 and the return air duct 220 perform heat exchange in a heat exchange core body, the air in the fresh air duct 210 can reduce the temperature of the air in the return air duct 220, cold air in the return air duct 220 enters the return air cavity 101, and if the temperature of the return air cavity 101 reaches a set temperature, at the moment, a compressor (not shown in the figure) of the air conditioner can directly send cold air meeting the, in the process, air in the fresh air duct 210 cannot enter the room to influence the indoor air pressure and air quality, so that the air quality in the machine room is ensured, and the energy consumption of the air conditioner is saved.
Specifically, the heat exchange device 200 further includes a first partition 201a, a second partition 201b, a first pipeline (not shown) and a second pipeline (not shown), the heat exchange core 202 is wrapped on the outer walls of the first pipeline and the second pipeline, the first partition 201a is respectively connected with the inner wall of the shell 201 and the outer surface of the heat exchange core 202 to form an isolated fresh air inlet cavity 210a and a separated return air inlet cavity 220a, the fresh air inlet cavity 210a is communicated with the fresh air inlet 211, the return air inlet cavity 220a is communicated with the second return air inlet 221, the second partition 201b is respectively connected with the inner wall of the shell 201 and the outer surface of the heat exchange core 202 to form an isolated fresh air outlet cavity 210b and a separated return air outlet cavity 220b, the fresh air outlet cavity 210b is communicated with the fresh air outlet 212, and the return air outlet cavity 220b is communicated with the second air outlet 222, the first pipeline (not shown) is communicated with the fresh air inlet cavity 210a and the fresh air outlet cavity 210b to form the fresh air duct 210, and the second pipeline (not shown) is communicated with the return air inlet cavity 220a and the return air outlet cavity 220b to form the return air duct 220. The fresh air duct 210 and the return air duct 220 are formed by the structure, and the air in the fresh air duct 210 and the air in the return air duct 220 can exchange heat in the first partition plate 201a and the second partition plate 201b besides exchanging heat in the coated heat exchange core 202, so that the overall heat exchange efficiency of the heat exchange device is improved, and the air can be fully exchanged heat in the heat exchange device.
The indoor unit 100 further includes a first air deflector 1111 disposed at the first air return opening 111, and the heat exchange device 200 further includes a second air deflector 2111 disposed at the fresh air inlet 211 and a third air deflector 2211 disposed at the second air return opening 221. The first air deflector 1111 is rotatably or slidably disposed at the first air return opening 111, the second air deflector 2111 is rotatably or slidably disposed at the fresh air inlet 211, and the third air deflector 2211 is rotatably or slidably disposed at the second air return opening 221. In addition, the fresh air outlet 212, the second air outlet 222 and/or the first air outlet 112 may also be provided with air deflectors according to actual requirements. Through the arrangement of the air deflectors, the air deflectors can be controlled to open or close the corresponding air ports according to control requirements, and the air outlet or inlet air quantity of the corresponding air ports can be adjusted, so that the air outlet temperature and the air outlet air quantity of the air conditioner can meet the requirements of indoor environment. The first air deflector 1111, the second air deflector 2111 and the third air deflector 2211 can correspond to the opening degrees of the first air return opening 111, the fresh air inlet 211 and the second air return opening 221, and the larger the opening degree is, the larger the air intake amount is, wherein when the opening degrees of the first air return opening 111, the fresh air inlet 211 and the second air return opening 221 are respectively the minimum opening degree, the first air deflector 1111 seals the first air return opening 111, the second air deflector 2111 seals the fresh air inlet 211, and the third air deflector 2211 seals the second air return opening 221.
Further, the heat exchanging device 200 further includes a first fan 240 and a second fan 250, the first fan 240 is located in the fresh air duct 210 and is close to the fresh air inlet 211, and the second fan 250 is located in the return air duct 220 and is close to the second return air inlet 221. Through the setting of the fan, the air quantity entering the fresh air duct 210 and the air quantity entering the return air duct 220 can be adjusted. The larger the rotation speed of the first fan 240 is, the more the air volume entering the fresh air duct 210 is, and the larger the rotation speed of the second fan 250 is, the more the air volume entering the return air duct 220 is.
In addition, the air conditioner further comprises a plurality of temperature sensors, and one temperature sensor can be arranged at the second air outlet 222 to detect the air outlet temperature of the return air duct 220; the temperature sensor can be arranged in the air return cavity 101 to detect the temperature of the air return cavity 101; one temperature sensor can be arranged in the outdoor environment communicated with the fresh air inlet 211 and used for detecting the temperature of the outdoor environment; the temperature sensor can be arranged in an indoor environment communicated with the first air return opening 111 and the second air return opening 221 and used for detecting the indoor environment temperature; in addition, the sensor can also be disposed at the first air outlet 112 for detecting the outlet air temperature of the air conditioner, and so on.
Further, referring to fig. 2, the control apparatus of the air conditioner includes: a processor 3001, such as a CPU, and a memory 3002. The memory 3002 may be a high-speed RAM memory or a non-volatile memory (e.g., a magnetic disk memory). The memory 3002 may alternatively be a storage device separate from the processor 3001.
The processor 3001 is connected to the memory 3002, the compressor (not shown), the first air deflector 1111, the second air deflector 2111, the third air deflector 2211, the first fan 240, the second fan 250, and the temperature sensors, respectively. The processor 3001 may control the operation of a compressor (not shown), the first air deflector 1111, the second air deflector 2111, the third air deflector 2211, the first fan 240, the second fan 250, and the like. The processor 3001 may also obtain its detected temperature from a temperature sensor.
Those skilled in the art will appreciate that the configuration of the device shown in fig. 2 is not intended to be limiting of the device and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.
As shown in fig. 2, an air conditioner control program may be included in the memory 3002, which is a readable storage medium.
In the apparatus shown in fig. 2, the processor 3001 may be configured to call an air conditioner control program stored in the memory 3002 and perform the following operations of the relevant steps of the air conditioner control method.
In addition, an embodiment of the present invention further provides a computer-readable storage medium, on which an air conditioner control program is stored, and the air conditioner control program, when executed by a processor, implements operations of relevant steps of the following air conditioner control method.
Referring to fig. 3, an embodiment of the present invention provides an air conditioner control method, based on the air conditioner including the first air deflector 1111, the second air deflector 2111 and the third air deflector 2211, the air conditioner control method including:
step S10, under the refrigeration mode, obtaining the indoor environment temperature and the outdoor environment temperature;
the air conditioner can enter a refrigeration mode after receiving an instruction sent by a user, can also automatically compare the indoor environment temperature with the temperature required by the machine room, and automatically control the air conditioner to enter the refrigeration mode when the indoor environment temperature is greater than or equal to the temperature required by the machine room.
The indoor environment temperature here is the temperature of the indoor environment communicating with the first air return opening 111 and the second air return opening 221, and specifically, may be acquired by a temperature sensor provided in the first air return opening 111 and/or the second air return opening 221. The outdoor environment temperature here is the temperature of the outdoor environment that communicates with fresh air inlet 211, and specifically, the temperature sensor that the accessible was located fresh air inlet 211 gathers.
Step S20, determining whether the outdoor ambient temperature is less than the indoor ambient temperature;
if yes, executing steps S30, S40 and S50; if not, the steps S60 and S70 are executed.
Step S30, controlling the second air deflector 2111 to operate to open the fresh air inlet 211, and controlling the third air deflector 2211 to operate to open the second air return opening 221;
specifically, the second air deflector 2111 can be controlled to deflect or slide, etc., so as to open the fresh air inlet 211 to a certain opening degree, so that air in the outdoor environment enters the fresh air duct 210; the third air deflector 2211 can be controlled to deflect or slide, etc. to open the second air return opening 221 to a certain degree, so that the air in the indoor environment enters the air return duct 220.
When the fresh air inlet 211 and the second air return opening 221 are opened, the deflection or sliding of the first air deflector 1111 may be controlled according to actual requirements to open or close the first air return opening 111.
In order to improve the heat exchange efficiency, the fresh air duct 210 and the return air duct 220 can be respectively provided with a first fan 240 and a second fan 250, so that indoor and outdoor air can enter the fresh air duct 210 and the return air duct 220 for heat exchange through the airflow disturbance action of the fans to ensure the air output of the air conditioner, and the fresh air duct 210 and the return air duct 220 can be adjusted in air intake through the fans to adjust the heat exchange efficiency. Therefore, when the heat exchange device 200 further includes the first fan 240 and the second fan 250, the step of controlling the second air deflector 2111 to operate to open the fresh air inlet 211 and the step of controlling the third air deflector 2211 to operate to open the second air return 221 include:
in step S31, the second air deflector 2111 is controlled to operate to open the fresh air inlet 211, the third air deflector 2211 is controlled to operate to open the second air return inlet 221, and the first fan 240 and the second fan 250 are controlled to start.
The rotation speeds of the first fan 240 and the second fan 250 after being started can be set according to actual requirements.
Further, as the air intake of the fresh air inlet 211 and the second return air inlet 221 is larger, the more electric energy is consumed by the operation of the first fan 240 and the second fan 250 and the operation of the second air deflector 2111 and the third air deflector 2211, and may even exceed the electric energy required by the compressor (not shown) alone for cooling. Therefore, the step S31 includes:
step S311, controlling the second air deflector 2111 to operate, so as to open the fresh air inlet 211 to a first preset opening, controlling the third air deflector 2211 to operate, so as to open the second air return port 221 to a second preset opening, controlling the first air deflector 1111 to operate, so as to open the first air return port 111 to a third preset opening, and simultaneously controlling the first fan 240 and the second fan 250 to operate according to corresponding preset rotation speeds.
The first preset opening degree and the second preset opening degree may be set to be smaller opening degrees, and the preset rotation speeds corresponding to the first fan 240 and the second fan 250 may be set to be lower rotation speeds, so as to reduce the intake air amount of the heat exchange device 200, thereby reducing the energy consumption of the heat exchange device 200, and reducing the overall energy consumption of the air conditioner. Meanwhile, in order to ensure that the air outlet volume of the air conditioner can meet the air outlet requirement of the air conditioner, the first air deflector 1111 is controlled to operate to open the first air return opening 111, and the third preset opening degree can be set to be a larger opening degree. The first preset opening degree and the third preset opening degree can be set in a matching mode according to the air outlet volume required by the air conditioner. Specifically, the first preset opening degree may be set to be smaller than (50% of the maximum opening degree corresponding to the fresh air inlet 211), the second preset opening degree may be set to be smaller than (50% of the maximum opening degree corresponding to the second air return opening 221), and the third preset opening degree may be set to be larger than (50% of the maximum opening degree corresponding to the first air return opening 111); the preset rotation speed corresponding to the first fan 240 may be set to be less than (50% of the maximum rotation speed corresponding to the first fan 240), and the preset rotation speed corresponding to the second fan 250 may be set to be less than (50% of the maximum rotation speed corresponding to the second fan 250).
When the rotation speed of the first fan 240 and the rotation speed of the second fan 250 both operate at the maximum rotation speed, the fresh air inlet 211 is opened to the maximum opening degree, and the second return air inlet 221 is opened to the maximum opening degree, the air inlet volumes of the fresh air duct 210 and the return air duct 220 can be the same and reach the maximum. Correspondingly, the first preset opening degree and the second preset opening degree can be set to be the same opening degree, and the corresponding preset rotating speeds of the first fan 240 and the second fan 250 can be set to be the same, so that the linkage adjustment of the air volume of the air channel is realized, and the heat exchange effect is ensured. In addition, the first preset opening degree and the second preset opening degree can also be set to different opening degrees according to actual heat exchange requirements.
Step S40, obtaining the current temperature of the return air chamber 101 of the indoor unit 100
Specifically, the current temperature of the return air cavity 101 can be obtained by acquiring the real-time temperature collected by the temperature sensor arranged in the return air cavity 101.
Step S50, determining whether the current temperature of the return air chamber 101 is less than or equal to a set temperature;
when the current temperature of the return air cavity 101 is less than or equal to the set temperature, executing step S51; when the current temperature of the return air chamber 101 is higher than the set temperature, step S52 is executed.
The set temperature is specifically the target outlet air temperature of the air conditioner, and is determined according to the temperature required by the machine room. After the fresh air inlet 211 and the second air return opening 221 are opened, the outdoor cold air in the fresh air duct 210 exchanges heat with the indoor air in the return air duct 220 to reduce the temperature, and the air in the return air duct 220 after being reduced in temperature enters the return air cavity 101. The air entering the air return chamber 101 may be mixed with the indoor air and then enter the accommodating chamber 102 when the first air return opening 111 is opened, and may directly enter the accommodating chamber 102 when the first air return opening 111 is not opened. Therefore, the temperature of the return air chamber 101 can be compared with the set temperature, and whether the temperature of the air in the return air chamber 101 currently meets the set temperature requirement of the air conditioner can be determined. When the current temperature of the air return cavity 101 is less than or equal to the set temperature, which indicates that the temperature of the air in the air return cavity 101 meets the requirement of the set temperature of the air conditioner, step S51 can be executed to send the air in the air return cavity 101 to the indoor environment; when the current temperature of the air return cavity 101 is higher than the set temperature, it indicates that the air temperature in the air return cavity 101 does not meet the set temperature requirement of the air conditioner, at this time, the air in the air return cavity 101 is not sent into the indoor environment, and further judgment and control are performed according to step S52, so as to ensure that the outlet air temperature of the air conditioner can meet the temperature requirement required by the machine room.
Step S51, controlling the compressor (not shown) not to start;
the compressor (not shown) is not required to be started, and cold air meeting the refrigeration requirement of the machine room is directly sent into the room, so that the energy consumption of the air conditioner is reduced, and the energy efficiency ratio of the air conditioner is improved.
Step S52, determining whether the current opening of the fresh air inlet 211 and the current opening of the second air return 221 both reach a maximum opening, determining whether the current rotation speed of the first fan 240 and the current rotation speed of the second fan 250 both reach a maximum rotation speed, and determining whether the current opening of the first air return 111 reaches a minimum opening;
when the current opening degree of the fresh air inlet 211 and the current opening degree of the second air return opening 221 do not reach the maximum opening degree, executing step S521; when the current rotation speed of the first fan 240 and the current rotation speed of the second fan 250 do not reach the maximum rotation speed, performing step S522; when the current opening degree of the first air return opening 111 does not reach the minimum opening degree, executing step S523; when the current opening degree of the fresh air inlet 211 and the current opening degree of the second air return opening 221 both reach the maximum opening degree, the current rotation speed of the first fan 240 and the current rotation speed of the second fan 250 both reach the maximum rotation speed, and the current opening degree of the first air return opening 111 reaches the minimum opening degree, step S524 is executed.
Step S521, controlling the second air deflector 2111 and the third air deflector 2211 to operate, so as to increase the current opening degrees of the fresh air inlet 211 and the second air return inlet 221;
step S522, controlling the first fan 240 and the second fan 250 to increase the current rotation speed;
step S523, controlling the first air deflector 1111 to operate to reduce the current opening degree of the first air return opening 111;
in step S524, the compressor (not shown) is controlled to start.
After step S521, step S522, and/or step S523 are executed, the process returns to step S50.
The temperature of the return air chamber 101 may be lowered by the air entering the return air chamber 101 through the return air duct 220, and the temperature of the return air chamber 101 may be raised by the air entering the return air chamber 101 through the first return air opening 111. Therefore, when the current opening degrees of the fresh air inlet 211 and the second air return inlet 221 do not reach the corresponding maximum opening degrees, and/or when the current rotation speeds of the first fan 240 and the second fan 250 do not reach the corresponding maximum rotation speeds, it indicates that the temperature of the cold air entering the air return cavity 101 through the air return duct 220 can be further reduced or the amount of the cold air can be further increased, and therefore, by executing step S521 and/or step S522, the operation of the second air deflector 2111 and the third air deflector 2211 can be respectively controlled, the current opening degrees of the fresh air inlet 211 and the second air return inlet 221 can be increased by the first opening degree adjustment amplitude value, and the current rotation speeds of the first fan 240 and the second fan 250 are increased by the preset rotation speed value, so as to reduce the temperature of the air return cavity 101; and/or, when the current opening degree of the first air return opening 111 is greater than the minimum opening degree, it indicates that the amount of the indoor air having a higher temperature entering the air return chamber 101 from the first air return opening 111 may be further reduced, so that the operation of the first air deflector 1111 may be controlled by executing step S523, and the current opening degree of the first air return opening 111 is reduced by the second opening degree adjustment amplitude value, so as to reduce the temperature of the air return chamber 101.
After the temperature of the return air chamber 101 is decreased by performing step S521, step S522 and/or step S523, step S50 may be performed again to determine whether the current temperature of the return air chamber 101 reaches the requirement of the set temperature. Through the manner, when the current temperature of the return air cavity 101 is greater than the set temperature, the steps S52, S521, S522, S523 and S50 are executed in a circulating manner, and until the current temperature of the return air cavity 101 is less than or equal to the set temperature, the step S51 is executed to discharge the air in the return air cavity 101 meeting the temperature requirement of the machine room from the first air outlet 112, so that on one hand, the discharged air can meet the temperature requirement of the machine room, and on the other hand, the air intake of the heat exchange device 200 is gradually increased through the steps S521 and S522, so that the air outlet temperature of the air conditioner can meet the refrigeration requirement, and meanwhile, the consumption of more electric energy is avoided, and the energy efficiency ratio of the air conditioner is improved.
When the current opening degree of the fresh air inlet 211 and the current opening degree of the second air return opening 221 both reach the maximum opening degree, and the current rotation speed of the first fan 240 and the current rotation speed of the second fan 250 both reach the maximum rotation speed, and the current opening degree of the first air return opening 111 reaches the minimum opening degree, it indicates that the temperature of the current air return cavity 101 cannot be reduced any more, and the air outlet temperature of the air conditioner cannot meet the refrigeration requirement of the machine room simply through the adjustment effect of the heat exchanging device 200, at this time, the compressor (not shown) can be controlled to start and the first air deflector 1111 is controlled to operate, so as to open the first air return opening 111, so that the air in the air return cavity 101 can be further reduced to be less than or equal to the set temperature in the accommodating cavity 102 through the adjustment effect of the compressor (not shown), and then is sent into the indoor environment by the opened air supply fan 120.
In the air conditioner control method provided in this embodiment, in the cooling mode and when the outdoor environment temperature is lower than the indoor environment temperature, by opening the fresh air inlet 211 and the second air return opening 221 of the heat exchange device 200, the cooler air in the outdoor environment can enter the fresh air duct 210, the air with the higher indoor temperature enters the return air duct 220, the air with the lower outdoor temperature enters the fresh air duct 210, the fresh air duct 210 and the return air duct 220 perform heat exchange in the heat exchange core, the air in the fresh air duct 210 can reduce the temperature of the air in the return air duct 220, the cold air in the return air duct 220 enters the return air cavity 101, if the temperature of the return air cavity 101 reaches the set temperature, the compressor (not shown) of the air conditioner can directly send the cold air meeting the cooling requirement into the room without being opened, so as to save the energy consumption of the air conditioner, and the air in this process, the air in the fresh air duct 210 cannot enter the room to affect the indoor air pressure and air quality, thereby the energy consumption of the air conditioner is saved while the air quality in the machine room is ensured.
As shown in fig. 3, after the step of determining whether the outdoor ambient temperature is lower than the indoor ambient temperature, the method further includes:
step S60, controlling the first air deflector 1111 to operate to open the first air return opening 111, controlling the second air deflector 2111 to operate to close the fresh air inlet 211, and controlling the third air deflector 2211 to operate to close the second air return opening 221;
in step S70, the compressor (not shown) is controlled to start.
In this embodiment, when the outdoor ambient temperature is greater than or equal to the indoor ambient temperature, the indoor return air cannot be regulated by the heat exchange device 200 to reach the set temperature, and therefore, the steps S60 and S70 are required to ensure that the air conditioner meets the cooling requirement of the indoor environment.
Further, as shown in fig. 3, when the outdoor environment temperature is lower than the indoor environment temperature, before the step of controlling the second air deflector 2111 to operate to open the fresh air inlet 211 and controlling the third air deflector 2211 to operate to open the second air return inlet 221, the method further includes:
step S00, judging whether the difference between the outdoor environment temperature and the indoor environment temperature is larger than or equal to a preset temperature difference;
if the difference is greater than or equal to the preset temperature difference, executing step S30; if the difference is smaller than the preset temperature difference, step S60 is executed.
Here, the preset temperature difference may be set to 3 degrees celsius.
In this embodiment, since the heat exchange effect is not obvious when the outdoor ambient temperature is close to the indoor ambient temperature, the heat exchange device 200 cannot effectively regulate and control the indoor return air, and therefore, the preset temperature difference can be set to ensure that the indoor return air temperature can be effectively reduced by opening the heat exchange device 200; in addition, since the heat exchange device 200 consumes energy in the same way as the compressor (not shown) in operation, and the heat exchange device 200 may be used to regulate and control the indoor return air when the indoor and outdoor temperature difference is small, the critical temperature difference of the indoor and outdoor temperature when the compressor (not shown) operates the air conditioner and the heat exchange device 200 consumes energy can be determined as the preset temperature difference, so that the refrigeration efficiency of the air conditioner is improved while the energy consumption is saved.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) as described above and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (9)
1. An air conditioner control method, characterized in that the air conditioner comprises:
the indoor unit comprises an indoor unit shell, an evaporator and a compressor connected with the evaporator, wherein the indoor unit shell is provided with a first air return opening and a first air outlet which are communicated with an indoor environment, a return air cavity and an accommodating cavity communicated with the return air cavity are formed in the indoor unit shell, the evaporator and the compressor are arranged in the accommodating cavity, the first air return opening is communicated with the return air cavity, and the first air outlet is communicated with the accommodating cavity;
the heat exchange device comprises a shell and a heat exchange core body, wherein a fresh air duct and a return air duct are formed in the shell, the heat exchange core body is arranged in the shell and positioned between the fresh air duct and the return air duct, the fresh air duct is provided with a fresh air inlet and a fresh air outlet which are communicated with an outdoor environment, and the return air duct is provided with a second return air inlet which is communicated with an indoor environment and a second air outlet which is communicated with the return air cavity;
the indoor unit further comprises a first air deflector arranged at the first air return opening, and the heat exchange device further comprises a second air deflector arranged at the fresh air inlet and a third air deflector arranged at the second air return opening;
the heat exchange device also comprises a first fan and a second fan, wherein the first fan is positioned in the fresh air duct and is close to the fresh air inlet, and the second fan is positioned in the return air duct and is close to the second return air inlet;
based on the air conditioner, the air conditioner control method comprises the following steps:
in a refrigeration mode, acquiring indoor ambient temperature and outdoor ambient temperature;
judging whether the outdoor environment temperature is lower than the indoor environment temperature;
if so, controlling the second air deflector to operate so as to open the fresh air inlet, and controlling the third air deflector to operate so as to open the second air return inlet;
acquiring the current temperature of an air return cavity of the indoor unit;
judging whether the current temperature of the return air cavity is less than or equal to a set temperature;
when the current temperature of the return air cavity is less than or equal to the set temperature, the compressor is controlled not to be started;
the step of controlling the second air deflector to operate so as to open the fresh air inlet and the step of controlling the third air deflector to operate so as to open the second air return inlet comprises the following steps:
the second air deflector is controlled to operate so as to open the fresh air inlet to a first preset opening degree and control the third air deflector to operate, so that the second air return opening is opened to a second preset opening degree, the first air deflector is controlled to operate, so that the first air return opening is opened to a third preset opening degree, simultaneously controlling the first fan and the second fan to respectively operate according to corresponding preset rotating speeds, wherein the first preset opening degree and the second preset opening degree are set to be smaller opening degrees, the preset rotating speed is set to be lower rotating speed, the third preset opening is set to be larger, the first preset opening is set to be smaller than (50 percent multiplied by the maximum opening corresponding to the fresh air inlet), the second preset opening degree is set to be smaller than (50% multiplied by the maximum opening degree corresponding to the second air return opening), and the third preset opening degree is set to be larger than (50% multiplied by the maximum opening degree corresponding to the first air return opening); the preset rotating speed corresponding to the first fan is set to be less than (50% multiplied by the maximum rotating speed corresponding to the first fan), and the preset rotating speed corresponding to the second fan is set to be less than (50% multiplied by the maximum rotating speed corresponding to the second fan).
2. The air conditioner control method as claimed in claim 1, wherein said heat exchanging device further comprises a first partition, a second partition, a first duct and a second duct, said heat exchanging core is wrapped on the outer wall of said first duct and said second duct, said first partition is respectively connected with the inner wall of said housing and the outer surface of said heat exchanging core to form a separated fresh air inlet chamber and a separated return air inlet chamber, said fresh air inlet chamber is communicated with said fresh air inlet, said return air inlet chamber is communicated with said second return air port, said second partition is respectively connected with the inner wall of said housing and the outer surface of said heat exchanging core to form a separated fresh air outlet chamber and a separated return air outlet chamber, said fresh air outlet chamber is communicated with said fresh air outlet, said return air outlet chamber is communicated with said second air outlet, said first duct is communicated with said fresh air inlet chamber and said fresh air outlet chamber to form said fresh air duct, the second pipeline is communicated with the return air inlet cavity and the return air outlet cavity to form the return air duct.
3. The air conditioner controlling method as claimed in claim 1, wherein after the step of determining whether the current temperature of the return air chamber is less than or equal to the set temperature, the method further comprises:
when the current temperature of the air return cavity is higher than a set temperature, judging whether the current opening degrees of the fresh air inlet and the second air return inlet reach the maximum opening degree, judging whether the current rotating speed of the first fan and the current rotating speed of the second fan reach the maximum rotating speed, and judging whether the current opening degree of the first air return inlet reaches the minimum opening degree;
when the current opening degree of the fresh air inlet and the current opening degree of the second air return inlet do not reach the maximum opening degree, controlling the second air deflector and the third air deflector to operate so as to increase the current opening degrees of the fresh air inlet and the second air return inlet;
when the current rotating speed of the first fan and the current rotating speed of the second fan do not reach the maximum rotating speed, controlling the first fan and the second fan to increase the current rotating speed;
when the current opening degree of the first air return opening does not reach the minimum opening degree, controlling the first air deflector to operate so as to reduce the current opening degree of the first air return opening;
and returning to execute the step of judging whether the current temperature of the return air cavity is less than or equal to the set temperature.
4. The air conditioner control method according to claim 3, wherein after the steps of determining whether the current opening degrees of the fresh air inlet and the second return air inlet both reach the maximum opening degree, determining whether the current rotation speed of the first fan and the current rotation speed of the second fan both reach the maximum rotation speed, and determining whether the current opening degree of the first return air inlet reaches the minimum opening degree, further comprising:
and when the current opening degree of the fresh air inlet and the current opening degree of the second air return inlet both reach the maximum opening degree, the current rotating speed of the first fan and the current rotating speed of the second fan both reach the maximum rotating speed, and the current opening degree of the first air return inlet reaches the minimum opening degree, the compressor is controlled to start.
5. The air conditioner controlling method as claimed in any one of claims 1 to 4, wherein after the step of controlling the second air deflector to operate to open the fresh air inlet and the third air deflector to operate to open the second return air inlet, the method further comprises:
acquiring the air outlet temperature of the second air outlet;
judging whether the outlet air temperature is greater than or equal to a set temperature;
if so, controlling the second air deflector to operate so as to open the fresh air inlet to the maximum opening degree, controlling the third air deflector so as to open the second air return inlet to the maximum opening degree, and controlling the compressor to start;
and if not, executing the step of acquiring the current temperature of the return air cavity of the indoor unit.
6. The air conditioner control method as claimed in any one of claims 1 to 4, wherein after said step of determining whether the outdoor ambient temperature is less than the indoor ambient temperature, further comprising:
if not, controlling the first air deflector to operate so as to open the first air return opening, controlling the second air deflector to operate so as to close the fresh air inlet, and controlling the third air deflector to operate so as to close the second air return opening;
and controlling the compressor to start.
7. The method as claimed in claim 6, wherein before the step of controlling the second air deflector to operate to open the fresh air inlet and the third air deflector to operate to open the second air return inlet, the method further comprises:
when the outdoor environment temperature is lower than the indoor environment temperature, judging whether the difference value between the outdoor environment temperature and the indoor environment temperature is larger than or equal to a preset temperature difference;
if the difference value is larger than or equal to the preset temperature difference, the step of controlling the second air deflector to operate so as to open a fresh air inlet and controlling the third air deflector to operate so as to open a second air return inlet is executed;
and if the difference value is smaller than the preset temperature difference, executing the step of controlling the first air deflector to operate so as to open the first air return opening, controlling the second air deflector to operate so as to close the fresh air inlet, and controlling the third air deflector to operate so as to close the second air return opening.
8. An air conditioner control device characterized by comprising: a memory, a processor, and an air conditioner control program stored on the memory and executable on the processor, the air conditioner control program when executed by the processor implementing the steps of the air conditioner control method of any one of claims 1 to 7.
9. A readable storage medium having stored thereon an air conditioner control program, which when executed by a processor, implements the steps of the air conditioner control method according to any one of claims 1 to 7.
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