CN108006924B - Air conditioner and control method thereof - Google Patents
Air conditioner and control method thereof Download PDFInfo
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- CN108006924B CN108006924B CN201711009265.8A CN201711009265A CN108006924B CN 108006924 B CN108006924 B CN 108006924B CN 201711009265 A CN201711009265 A CN 201711009265A CN 108006924 B CN108006924 B CN 108006924B
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- 238000000034 method Methods 0.000 title claims abstract description 36
- 238000001514 detection method Methods 0.000 claims abstract description 29
- 238000010438 heat treatment Methods 0.000 claims description 18
- 238000004378 air conditioning Methods 0.000 claims description 9
- 239000003507 refrigerant Substances 0.000 claims description 4
- 239000003570 air Substances 0.000 description 55
- 239000012080 ambient air Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
- F25B49/022—Compressor control arrangements
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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
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Abstract
The invention provides an air conditioner and a control method thereof. The method is suitable for the air conditioner with two cross-flow fans, and is used for preventing the normal work of the environment temperature detection device from being influenced by overhigh internal temperature of the first interval of the indoor unit. The air conditioner control method firstly determines the heat exchange efficiency of the first section of the heat exchanger according to the opening and closing states of the two cross-flow fans, and then determines the operation modes of the two cross-flow fans of the air conditioner. According to the method, when the temperature of the first section of the heat exchanger of the indoor unit is higher, the operating state of the first through-flow fan is controlled, the heat exchange efficiency of the first section of the heat exchanger of the indoor unit is adjusted, the temperature of the first section is adjusted, and the situation that the normal work of the environment temperature detection device is influenced due to overhigh temperature of the first section of the indoor unit can be effectively prevented in time.
Description
Technical Field
The invention relates to the field of air conditioners, in particular to an air conditioner and a control method thereof.
Background
When the air conditioner heats, the refrigerant passes through the compressor, the evaporator and the condenser in sequence. The evaporator is in a low temperature state for a long time, and thus the internal temperature of the indoor unit may be high.
The existing air conditioner is generally internally provided with a temperature sensor for detecting the indoor environment temperature, the temperature sensor monitors the indoor environment temperature in real time and compares the indoor environment temperature with an indoor target temperature set by a user, and the air conditioner sets a working state according to a comparison result so as to achieve the best heating effect. However, since the temperature inside the indoor unit is high during heating, the normal operation of the temperature sensor may be affected, and the detection data of the temperature sensor may be higher than the actual ambient temperature. If the temperature detected by the temperature sensor is higher than the actual temperature, the air conditioner is stopped in advance when the indoor temperature does not reach the target temperature, and the use experience of a user is influenced.
Disclosure of Invention
In view of the above problems, the present invention has been made to provide an air conditioner and a control method thereof that overcome or at least partially solve the above problems.
A further object of the present invention is to prevent the high temperature inside the indoor unit from affecting the normal operation of the ambient temperature detecting device.
It is a further object of the present invention to enhance the user experience.
According to one aspect of the present invention, the present invention provides a control method of an air conditioner, an inside of an indoor unit of the air conditioner includes a first section and a second section divided along a transverse direction of the indoor unit, a first crossflow fan and a second crossflow fan are respectively disposed inside the first section and the second section, an indoor unit heat exchanger extends along the transverse direction of the indoor unit and includes a first section located in the first section and a second section located in the second section, a coil temperature detection device for detecting a temperature of the first section of the indoor unit heat exchanger and an ambient temperature detection device for detecting an ambient temperature in a room are further disposed in the first section, the control method includes: in the process of air conditioning heating, the opening and closing states of two cross-flow fans are obtained; continuously detecting the temperature of a first section of a heat exchanger of the indoor unit by using a coil temperature detection device; and determining the running modes of the two cross-flow fans according to the opening and closing states of the cross-flow fans and the temperature of the first section of the heat exchanger of the indoor unit.
Optionally, the step of determining the operation modes of the two cross-flow fans according to the opening and closing states of the cross-flow fans and the temperature of the first section of the heat exchanger of the indoor unit comprises the following steps: judging whether the first cross flow fan is in a closed state or not, and judging whether the second cross flow fan is in an open state or not; if so, judging whether the temperature of the first section of the heat exchanger of the indoor unit is higher than or equal to a first preset temperature; if so, starting the first through-flow fan and controlling the first through-flow fan to continuously operate at a preset rotating speed; if not, judging whether the temperature of the first section of the heat exchanger of the indoor unit is lower than a first preset temperature and higher than a second preset temperature or not; if so, controlling the first through-flow fan to operate intermittently; if not, keeping the closing state of the first constant flow fan; if not, adjusting the rotating speeds of the two cross-flow fans according to a user instruction; wherein the first preset temperature is greater than the second preset temperature.
Optionally, the step of controlling the intermittent operation of the first through-flow fan comprises: starting the first through-flow fan, and controlling the first through-flow fan to continuously run at a preset rotating speed for a preset time; closing the first through-flow fan to stop running for a preset time; and repeating the steps circularly to realize the intermittent operation of the first constant flow fan.
Optionally, the control method further includes: continuously detecting the indoor environment temperature by using an environment temperature detection device; judging whether the indoor environment temperature is higher than or equal to a target temperature set by a user; if yes, the air conditioner compressor is controlled to stop, and heating is suspended.
Optionally, the step of continuously operating the first through-flow fan at the preset rotation speed and controlling the first through-flow fan to operate intermittently further includes: and when the temperature of the first section of the heat exchanger of the indoor unit is detected to be lower than or equal to a second preset temperature, closing the first through-flow fan.
According to another aspect of the present invention, there is also provided an air conditioner including: indoor set, indoor set inside including along the first interval and the second interval of indoor set horizontal division, indoor set includes: the first through flow fan is arranged in the first interval; the second cross-flow fan is arranged in the second interval; the indoor unit heat exchanger is arranged in the indoor unit, extends along the transverse direction of the indoor unit and comprises a first section positioned in a first interval and a second section positioned in a second interval; the coil pipe temperature detection device is arranged in the first interval and used for detecting the temperature of the first section of the heat exchanger of the indoor unit; the environment temperature detection device is arranged in the first interval and used for detecting the indoor environment temperature; a compressor configured to compress a refrigerant to heat; a state acquiring device configured to acquire the open and closed states of the two cross-flow fans; and the control device is electrically connected with the coil temperature detection device and the state acquisition device and is configured to determine the operation modes of the two cross-flow fans according to the opening and closing states of the cross-flow fans and the temperature of the first section of the heat exchanger of the indoor unit.
Optionally, the control device is further configured to: when the first cross flow fan is in a closed state, the second cross flow fan is in an open state, and the temperature of the first section of the heat exchanger of the indoor unit is higher than or equal to a first preset temperature, the first cross flow fan is opened and is controlled to continuously run at a preset rotating speed; under the conditions that the first cross flow fan is in a closed state, the second cross flow fan is in an open state, and the temperature of the first section of the heat exchanger of the indoor unit is lower than a first preset temperature and higher than a second preset temperature, controlling the first cross flow fan to operate intermittently; when the first cross flow fan is in a closed state, the second cross flow fan is in an open state, and the temperature of the first section of the heat exchanger of the indoor unit is lower than or equal to a second preset temperature, the closed state of the first cross flow fan is kept; and under the condition that the first cross flow fan is in an opening state or the second cross flow fan is in a closing state, adjusting the rotating speeds of the two cross flow fans according to a user instruction.
Optionally, the control device is further configured to: starting the first through-flow fan, and controlling the first through-flow fan to continuously run at a preset rotating speed for a preset time; closing the first through-flow fan to stop running for a preset time; and repeating the steps circularly to realize the intermittent operation of the first constant flow fan.
Optionally, the control device is further configured to: and under the condition that the indoor environment temperature is higher than or equal to the target temperature set by the user, controlling the air-conditioning compressor to stop and suspending heating.
Optionally, the control device is further configured to: and when the temperature of the first section of the heat exchanger of the indoor unit is detected to be lower than or equal to a second preset temperature, closing the first through-flow fan.
The invention provides a control method of an air conditioner, which is suitable for the air conditioner with two cross-flow fans and is used for preventing the normal work of an environment temperature detection device from being influenced by overhigh internal temperature of a first interval of an indoor unit. Because the open-close states of two cross-flow fans of the air conditioner are possibly different, the heat exchange efficiency of the first section and the second section of the heat exchanger of the indoor unit is different, particularly when the first cross-flow fan is closed, the heat exchange efficiency of the first section of the heat exchanger of the indoor unit is poor, the heat in the first section of the air conditioner cannot be dissipated, and the internal temperature is increased. The air conditioner control method firstly determines whether the first section of the heat exchanger can normally radiate heat according to the opening and closing states of the two cross-flow fans, and then adjusts the operation modes of the two cross-flow fans. According to the method, when the temperature of the first section of the heat exchanger of the indoor unit is higher, the operating state of the first through-flow fan is controlled, the heat exchange efficiency of the first section of the heat exchanger of the indoor unit is adjusted, the temperature of the first section is adjusted, and the situation that the normal work of the environment temperature detection device is influenced due to overhigh temperature of the first section of the indoor unit can be effectively prevented in time.
Furthermore, the method of the invention also controls the air conditioner compressor to stop and suspend heating when the indoor environment temperature is higher than or equal to the target temperature set by the user, thereby preventing the indoor temperature from being overhigh and preventing the user from feeling overheat, and increasing the user experience.
The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.
Drawings
Some specific embodiments of the invention will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:
fig. 1 is a schematic view of an air conditioner according to an embodiment of the present invention;
fig. 2 is an exploded schematic view of an air conditioner according to an embodiment of the present invention;
fig. 3 is a schematic block diagram of an air conditioner according to an embodiment of the present invention;
fig. 4 is a schematic view of a control method of an air conditioner according to an embodiment of the present invention;
fig. 5 is a flowchart of a control method of an air conditioner according to an embodiment of the present invention.
Detailed Description
The present embodiment first provides an air conditioner including: a cooling/heating cycle system comprising a compressor 100, an indoor heat exchanger 300, and an outdoor heat exchanger 200. In air-conditioning heating, a refrigerant passes through the compressor 100, the indoor heat exchanger 300, and the outdoor heat exchanger 200 in this order.
The indoor unit includes: the air conditioner comprises a shell, a first cross flow fan 310, a second cross flow fan 320, two air outlets 330, an indoor unit heat exchanger 300 and a temperature detection device 410. The indoor unit comprises a first section and a second section which are divided along the transverse direction of the indoor unit. The first through-flow fan 310 is disposed inside the first section; the second cross flow fan 320 is disposed in a second section, that is, two cross flow fans are disposed on the left and right sides of the indoor unit, and the first section may represent a left space or a right space of the indoor unit. The two air outlets 330 are disposed at the bottom of the front side of the indoor unit casing, and the two air outlets 330 respectively correspond to the first cross flow fan 310 and the second cross flow fan 320 in the transverse direction of the indoor unit, so as to allow the first cross flow fan 310 and the second cross flow fan 320 to be blown by the air outlets 330 respectively corresponding to the air outlets.
In this embodiment, preferably, the two cross-flow fans are equal in size and model, and are coaxially arranged. The user can control the two cross-flow fans to be turned on and off through a remote controller. The two cross-flow fans can be simultaneously started to supply air to the whole indoor space area, and one of the cross-flow fans can also be independently started to realize that the indoor unit of the air conditioner only supplies air to the left area or the right area of the room.
The indoor unit heat exchanger 300 is disposed inside the indoor unit and extends in a lateral direction of the indoor unit. The top of the indoor unit casing is also provided with an air inlet 340 extending along the transverse direction of the indoor unit, and the indoor unit heat exchanger 300 is arranged in the area between the two cross-flow fans and the air inlet 340. The indoor heat exchanger 300 extends over the entire lateral extent of the indoor unit, the indoor heat exchanger 300 comprising a first section located within a first interval and a second section located within a second interval.
The coil temperature detecting device 410 is disposed on a coil surface of a first section of the indoor unit heat exchanger 300, and is configured to detect a temperature of the indoor unit heat exchanger 300. In this embodiment, the temperature detecting device 410 is disposed at a position inside the first region near the lateral end of the housing, and the position is closer to the air-conditioning computer board, so that the circuit is convenient to connect with the wiring. Therefore, the data detected by the temperature detecting device 410 is the temperature value of the first section of the heat exchanger of the indoor unit. The ambient temperature detection device 420 is disposed on the housing of the first section, and is configured to detect an indoor ambient temperature. Both the coil temperature detecting device 410 and the ambient temperature detecting device 420 may be temperature sensors.
The above air conditioner further includes: a state acquisition device 430 and a control device 500. The state acquiring means 430 is configured to acquire the open/close states of the two cross flow fans according to a user instruction. The control means 500 is electrically connected to the temperature detection means 410 and the status acquisition means 430 and is configured to determine the operation mode of both crossflow fans based on the open/close status of the crossflow fans and the temperature of the first section of the heat exchanger of the indoor unit. In this embodiment, the state acquiring device 430 is connected to an air-conditioning computer board, the air-conditioning computer board acquires a remote control command from a user, and the state acquiring device 430 determines the operating states of the two cross-flow fans according to the command set by the user. The control device 500 may be a computer board of the air conditioner, and the computer board is used for controlling the overall operation state of the air conditioner.
The open and close state of the cross flow fan affects the temperature of the indoor unit heat exchanger 300. When a certain cross flow fan is started, the heat exchange efficiency between the heat exchanger section corresponding to the cross flow fan and ambient air is high, and the temperature of the heat exchanger section is low when the air conditioner is used for heating. Conversely, when a cross-flow fan is turned off, the heat exchanger section corresponding to the cross-flow fan has low heat exchange efficiency with the ambient air, and when the air conditioner is used for heating, the temperature of the heat exchanger section is high. The air conditioner control device 500 of the embodiment first determines whether the two heat exchanger sections have the possibility of overhigh temperature due to the fact that the cross flow fans are not started according to the opening and closing states of the two cross flow fans, and then determines the operation modes of the two cross flow fans according to the temperature of the first section so as to prevent the influence of overhigh temperature in a certain section on the normal work of the environment temperature detection device 420.
The control device 500 is further configured to turn on the first crossflow fan 310 and control the first crossflow fan 310 to continuously operate at a preset rotation speed when the first crossflow fan 310 is in a closed state, the second crossflow fan 320 is in an open state, and the temperature of the first section of the indoor unit heat exchanger is higher than or equal to a first preset temperature; and controlling the first cross flow fan 320 to operate intermittently under the conditions that the first cross flow fan 310 is in a closed state, the second cross flow fan 320 is in an open state, and the temperature of the first section of the indoor unit heat exchanger is lower than a first preset temperature and higher than a second preset temperature. The control device 500 is further configured to maintain the off state of the second crossflow fan 320 when the first crossflow fan 310 is in the off state, the second crossflow fan 320 is in the on state, and the temperature of the indoor unit heat exchanger 300 is lower than or equal to a second preset temperature. The first preset temperature may be 57 deg.c and the second preset temperature may be 50 deg.c. The preset rotation speed may be set to 450 rpm.
When the air conditioner heats, the air conditioner firstly obtains an indoor target temperature set by a user, and the target temperature is the temperature expected to be reached indoors. The ambient temperature detection means 420 continuously detects the indoor ambient temperature and determines whether it is higher than the target temperature. If the indoor environment temperature is higher than the temperature, the air conditioner controls the compressor to stop and suspend heating so as to prevent the indoor temperature from being too high and influence the comfort level of a user. However, for the air conditioner with two cross-flow fans, when the first cross-flow fan 310 is in the off state and the second cross-flow fan 320 is in the on state, the heat exchange efficiency of the first section of the indoor unit heat exchanger is low, the temperature in the first section is high, and the high temperature may affect the normal operation of the ambient temperature detection device. In the above case, the temperature detected by the ambient temperature detection means may be higher than the actual ambient temperature. When the first cross flow fan 310 is closed and the temperature of the first section is higher, the air conditioner controls the first cross flow fan 310 to be opened, adjusts the heat exchange efficiency of the first section of the indoor unit heat exchanger, and prevents the first section temperature from being overhigh to influence the normal work of the environment temperature detection device.
Specifically, when the temperature of the first section of the indoor unit heat exchanger is higher than 57 ℃, the ambient temperature detection device may have been affected, and at this time, the control device 500 turns on the first through-flow fan 310 and controls the first through-flow fan to continuously operate at a low wind speed, so as to improve the heat exchange efficiency of the first section, and thus the temperature of the first section is decreased. When the temperature of the first section of the heat exchanger of the indoor unit is between 50 ℃ and 57 ℃, the control device 500 controls the first through-flow fan 310 to be started and stopped intermittently, so that the temperature of the first section of the heat exchanger is prevented from rising continuously.
The control device 500 is further configured to: when the first through-flow fan 310 is controlled to be intermittently started and stopped, the first through-flow fan 310 is started first, and the first through-flow fan 310 is controlled to continuously run at a preset rotating speed for a preset time; then, the first through-flow fan 310 is turned off to stop running for a preset time; the above steps are repeated cyclically thereafter to achieve intermittent operation of the first through-flow fan 310. The preset time may be set to 3 min. The above-mentioned preset rotation speed was set to 450 rpm.
The embodiment also provides a control method of the air conditioner. Fig. 4 is a schematic diagram of a control method of an air conditioner according to an embodiment of the present invention. The control method generally includes:
step S402, in the process of heating by the air conditioner, the opening and closing states of the two cross-flow fans are obtained according to the user instruction. The open and close state of the cross flow fan affects the temperature of the indoor unit heat exchanger 300. When a certain cross flow fan is started, the heat exchange efficiency between the heat exchanger section corresponding to the cross flow fan and ambient air is high, and the temperature of the heat exchanger section is low when the air conditioner is used for heating. Conversely, when a cross-flow fan is turned off, the heat exchanger section corresponding to the cross-flow fan has low heat exchange efficiency with the ambient air, and when the air conditioner is used for heating, the temperature of the heat exchanger section is high.
In step S404, the temperature of the first section of the indoor heat exchanger is continuously detected by the coil temperature detecting device 410. Since the coil temperature detecting device 410 is disposed in the first interval, the coil temperature detecting device 410 detects the temperature value of the first section of the indoor unit heat exchanger 300.
And step S406, determining the operation modes of the two cross-flow fans according to the opening and closing states of the cross-flow fans and the temperature of the first section of the heat exchanger of the indoor unit. According to the above description, since the open and close states of the two cross flow fans are different, the heat exchange efficiency of the first section and the second section of the indoor unit heat exchanger 300 may be different. The air conditioner control method of the embodiment firstly determines whether the first section of the heat exchanger has the possibility of high temperature caused by the closing of the cross flow fan according to the opening and closing states of the two cross flow fans, and then determines the operation modes of the two cross flow fans according to the temperature of the first section of the heat exchanger of the indoor unit so as to prevent the first section from having overhigh temperature and influencing the normal work of the environment temperature detection device 420. The operation modes of the cross flow fan may include: the system comprises a plurality of modes such as opening, closing, continuous low wind speed operation, intermittent start and stop operation and the like.
Fig. 5 is a flowchart of a control method of an air conditioner according to an embodiment of the present invention. The method is suitable for the air conditioner with the double cross-flow fans and is used for preventing the first interval of the indoor unit of the air conditioner from being overhigh in temperature. The control method sequentially executes the following steps:
step S502, in the process of air conditioning and heating, the opening and closing states of the two cross-flow fans are obtained.
In step S504, the temperature of the first section of the indoor heat exchanger is continuously detected by the coil temperature detecting device 410.
In step S506, it is determined whether the first crossflow fan 310 is in an off state and the second crossflow fan 320 is in an on state, i.e., whether only the first crossflow fan 310 is off is detected. When only the first cross flow fan 310 is turned off, the first section of the indoor unit heat exchanger 300 cannot dissipate heat by the cross flow fan, and thus the heat exchange efficiency is low. In this case, the temperature of the indoor unit first section may be too high.
In step S508, if the determination result in step S506 is yes, it is determined whether the temperature of the first section of the heat exchanger of the indoor unit is higher than or equal to a first preset temperature, where the first preset temperature may be set to 57 ℃. As described above, when the first convection fan 310 is turned off, the temperature of the indoor unit in the first section may be too high. Especially, when the temperature of the first section of the heat exchanger of the indoor unit is higher than or equal to the first preset temperature, it indicates that the temperature of the first section of the indoor unit is very high, and the high temperature will affect the normal operation of the ambient temperature detecting device 420.
And step S510, if the judgment result in the step S506 is negative, adjusting the rotating speeds of the two cross-flow fans according to the user instruction. If the first cross flow fan is in an open state or the second cross flow fan is in a closed state, the first section of the heat exchanger can normally radiate heat, and the situation that the temperature of the first section is too high due to slow heat radiation is avoided. The ambient temperature detecting means 420 may operate normally and the two cross flow fans may operate normally according to the user's instruction.
In step S512, if the determination result in step S508 is yes, the first circulation fan 310 is turned on and the first circulation fan 310 is controlled to continuously operate at the predetermined rotation speed. According to the foregoing, when the temperature of the first section of the heat exchanger of the indoor unit is higher than the first predetermined temperature, the internal temperature of the first section is higher due to poor heat dissipation. The high temperature may affect the normal operation of the ambient temperature sensing device 420. At this time, the control device 500 turns on the first convection fan 310 and controls the first convection fan to continuously operate at a low wind speed, thereby improving the heat exchange efficiency of the first section of the heat exchanger, promoting the heat dissipation of the first section, reducing the temperature of the first section, and preventing the temperature data detected by the ambient temperature detecting device 420 from being inaccurate.
Step S514, if the determination result in step S508 is negative, continuously determining whether the temperature of the first section of the heat exchanger of the indoor unit is higher than the second preset temperature, that is, determining whether the temperature of the first section of the heat exchanger is between the first preset temperature and the second preset temperature. The second preset temperature may be set to 50 ℃.
In step S516, if the determination result in step S514 is yes, the first through-flow fan 310 is controlled to operate intermittently. The intermittent operation of the first through-flow fan 310 means: starting the first through-flow fan 310, and controlling the first through-flow fan 310 to continuously run at a preset rotation speed for a preset time; then, the first through-flow fan 310 is turned off to stop running for a preset time, and the above steps are repeated in a cycle. When the temperature of the first section of the heat exchanger of the indoor unit is between the first preset temperature and the second preset temperature, the control device 500 controls the first through-flow fan 310 to be started and stopped intermittently, so that the heat exchange efficiency of the first section is improved, and the temperature of the first section is prevented from continuously rising.
In step S518, if the determination result in step S514 is negative, the off state of the first through-flow fan is maintained. If the temperature of the first section of the heat exchanger of the indoor unit is lower than or equal to the second preset temperature, the temperature of the first section of the indoor unit is relatively low, and at this time, the first through-flow fan 310 does not need to be started to radiate heat of the first section of the heat exchanger.
In addition, the method of the present invention further comprises: when the first through-flow fan 310 is continuously operated at the preset rotation speed and the first through-flow fan 310 is controlled to operate intermittently, if it is detected that the temperature of the first section of the indoor unit heat exchanger is recovered to be lower than or equal to the second preset temperature, the first through-flow fan 310 is turned off.
Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been illustrated and described in detail herein, many other variations or modifications consistent with the principles of the invention may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should be understood and interpreted to cover all such other variations or modifications.
Claims (10)
1. A control method of an air conditioner is characterized in that a first section and a second section are transversely divided along the indoor unit in the indoor unit of the air conditioner, a first cross flow fan and a second cross flow fan are respectively arranged in the first section and the second section, an indoor unit heat exchanger transversely extends along the indoor unit and comprises a first section located in the first section and a second section located in the second section, a coil temperature detection device used for detecting the temperature of the first section of the indoor unit heat exchanger and an environment temperature detection device used for detecting the indoor environment temperature are further arranged in the first section, and the control method comprises the following steps:
in the process of air conditioning heating, the opening and closing states of the two cross-flow fans are obtained;
continuously detecting the temperature of the first section of the heat exchanger of the indoor unit by using the coil pipe temperature detection device;
determining the operation modes of the two cross-flow fans according to the opening and closing states of the cross-flow fans and the temperature of a first section of the heat exchanger of the indoor unit; the method comprises the following steps of determining the running modes of two cross-flow fans according to the opening and closing states of the cross-flow fans and the temperature of a first section of a heat exchanger of the indoor unit, wherein the steps comprise:
judging whether the first cross flow fan is in a closed state or not, and judging whether the second cross flow fan is in an open state or not;
if so, judging whether the temperature of the first section of the heat exchanger of the indoor unit is higher than or equal to a first preset temperature;
if yes, the first through-flow fan is started and is controlled to continuously operate at a preset rotating speed.
2. The control method of claim 1, wherein the step of determining the operation mode of the two crossflow fans based on the open and closed state of the crossflow fan and the temperature of the first section of the indoor unit heat exchanger comprises:
judging whether the first cross flow fan is in a closed state or not, and judging whether the second cross flow fan is in an open state or not;
if so, judging whether the temperature of the first section of the heat exchanger of the indoor unit is higher than or equal to a first preset temperature;
if not, judging whether the temperature of the first section of the indoor unit heat exchanger is lower than a first preset temperature and higher than a second preset temperature or not;
if so, controlling the first through-flow fan to operate intermittently;
if not, keeping the closing state of the first through-flow fan; and
if not, adjusting the rotating speeds of the two cross-flow fans according to a user instruction; wherein
The first preset temperature is greater than the second preset temperature.
3. The control method according to claim 2, wherein the step of controlling the first through-flow fan to operate intermittently includes:
starting the first through-flow fan, and controlling the first through-flow fan to continuously run at a preset rotating speed for a preset time;
closing the first through-flow fan to stop running for a preset time;
and circularly repeating the steps to realize the intermittent operation of the first through-flow fan.
4. The control method according to claim 3, further comprising:
continuously detecting the indoor environment temperature by using the environment temperature detection device;
judging whether the indoor environment temperature is higher than or equal to a target temperature set by a user;
if yes, the air conditioner compressor is controlled to stop, and heating is suspended.
5. The control method according to claim 3, further comprising, after the steps of continuously operating the first through-flow fan at a preset rotation speed and controlling the first through-flow fan to operate intermittently:
and when the temperature of the first section of the indoor unit heat exchanger is detected to be lower than or equal to the second preset temperature, closing the first through-flow fan.
6. An air conditioner, comprising:
indoor set, indoor set inside including along first interval and the second interval of indoor set horizontal division, indoor set includes:
the first through flow fan is arranged in the first interval;
the second cross-flow fan is arranged in the second interval;
the indoor unit heat exchanger is arranged in the indoor unit, extends along the transverse direction of the indoor unit and comprises a first section positioned in the first interval and a second section positioned in the second interval;
the coil pipe temperature detection device is arranged in the first interval and used for detecting the temperature of the first section of the indoor unit heat exchanger;
the environment temperature detection device is arranged in the first interval and used for detecting the indoor environment temperature;
a compressor configured to compress a refrigerant to heat;
a state acquiring device configured to acquire the open and closed states of the two cross-flow fans;
the control device is electrically connected with the coil temperature detection device and the state acquisition device and is configured to determine the operation modes of the two cross-flow fans according to the opening and closing states of the cross-flow fans and the temperature of the first section of the heat exchanger of the indoor unit; wherein the control device is further configured to:
and when the first cross flow fan is in a closed state, the second cross flow fan is in an open state, and the temperature of the first section of the indoor unit heat exchanger is higher than or equal to a first preset temperature, the first cross flow fan is opened and is controlled to continuously operate at a preset rotating speed.
7. The air conditioner of claim 6, wherein the control device is further configured to:
under the conditions that the first cross flow fan is in a closed state, the second cross flow fan is in an open state, and the temperature of a first section of the indoor unit heat exchanger is lower than a first preset temperature and higher than a second preset temperature, controlling the first cross flow fan to operate intermittently; when the first cross flow fan is in a closed state, the second cross flow fan is in an open state, and the temperature of the first section of the indoor unit heat exchanger is lower than or equal to the second preset temperature, the first cross flow fan is kept in the closed state; and
and under the condition that the first cross flow fan is in an opening state or the second cross flow fan is in a closing state, adjusting the rotating speeds of the two cross flow fans according to a user instruction.
8. The air conditioner of claim 7, wherein the control device is further configured to:
starting the first through-flow fan, and controlling the first through-flow fan to continuously run at a preset rotating speed for a preset time; closing the first through-flow fan to stop running for a preset time; and circularly repeating the steps to realize the intermittent operation of the first through-flow fan.
9. The air conditioner of claim 8, wherein the control device is further configured to:
and under the condition that the indoor environment temperature is higher than or equal to the target temperature set by the user, controlling the air-conditioning compressor to stop and suspending heating.
10. The air conditioner of claim 8, wherein the control device is further configured to:
and when the temperature of the first section of the indoor unit heat exchanger is detected to be lower than or equal to the second preset temperature, closing the first through-flow fan.
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| CN113669855B (en) * | 2020-05-13 | 2022-09-16 | 广东美的制冷设备有限公司 | High-temperature sterilization control method, double-through-flow air conditioner and storage medium |
| CN111894884B (en) * | 2020-07-10 | 2023-11-03 | 上海沪工焊接集团股份有限公司 | Fan control method suitable for arc welding power supply, storage medium and arc welding power supply |
| CN111895633B (en) * | 2020-07-31 | 2021-10-29 | 青岛海尔空调器有限总公司 | Control method of multi-split air conditioner |
| CN112524767B (en) * | 2020-12-07 | 2022-06-24 | 佛山市顺德区美的电子科技有限公司 | Air conditioner control method, air conditioner control device, air conditioner and storage medium |
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Effective date of registration: 20201102 Address after: 266101 Haier Industrial Park, Haier Road, Laoshan District, Shandong, Qingdao, China Patentee after: QINGDAO HAIER AIR CONDITIONER GENERAL Corp.,Ltd. Patentee after: Haier Smart Home Co., Ltd. Address before: 266101 Haier Industrial Park, Haier Road, Laoshan District, Shandong, Qingdao, China Patentee before: QINGDAO HAIER AIR CONDITIONER GENERAL Corp.,Ltd. |