CN109084382B - Air conditioner outdoor unit and control method thereof - Google Patents
Air conditioner outdoor unit and control method thereof Download PDFInfo
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- CN109084382B CN109084382B CN201811043197.1A CN201811043197A CN109084382B CN 109084382 B CN109084382 B CN 109084382B CN 201811043197 A CN201811043197 A CN 201811043197A CN 109084382 B CN109084382 B CN 109084382B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/38—Fan details of outdoor units, e.g. bell-mouth shaped inlets or fan mountings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside air
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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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- Fluid Mechanics (AREA)
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- Air Conditioning Control Device (AREA)
Abstract
The invention discloses an air conditioner outdoor unit and an air conditioner outdoor unit control method, and belongs to the field of air conditioners. The air conditioner outdoor unit comprises an air conditioner outdoor unit shell, a fan and a main controller, wherein the fan can be used for heat dissipation, the main controller can control the air conditioner outdoor unit to operate, the air conditioner outdoor unit shell also comprises a first temperature sensor and a second temperature sensor, the first temperature sensor can detect the environment temperature of the air conditioner outdoor unit, the second temperature sensor can detect the air supply temperature of the fan, and the main controller receives signals of the first temperature sensor and the second temperature sensor and executes the following procedures: the main controller compares the first sensor signal with a preset value, calculates the difference value between the second temperature sensor and the first temperature sensor and compares the difference value with the preset difference value, and controls the opening of the fan according to the comparison result of the two. The invention further comprises an air conditioner outdoor unit control method, and the air conditioner outdoor unit is adopted. The invention is applied to the aspect of the air conditioner outdoor unit, solves the problem of poor heat exchange in high-temperature weather, and can automatically adjust the rotating speed of the fan and enhance the heat exchange.
Description
Technical Field
The invention relates to the field of air conditioners, in particular to an air conditioner outdoor unit and an air conditioner outdoor unit control method.
Background
The air conditioner outdoor unit is mainly applied to heat exchange of an air conditioner, and poor heat exchange can occur when the outdoor temperature is too high, so that the refrigeration effect of the air conditioner is influenced. Especially, commercial air conditioner, air condensing units often install in narrow and small space, and the easy return air short circuit that takes place, and the condition that heat exchange efficiency reduces takes place more easily. At present, the rotating speed of the air conditioner outdoor unit is increased by depending on the field setting of service personnel in high-temperature weather, so that the air conditioner outdoor unit enters a high static pressure mode; and after the high-temperature weather passes, the normal mode is adjusted back to the site. The high static pressure mode is noisy, consumes high energy, is unfavorable for energy saving and user comfort when opened for a long time, and requires field setting, which also increases maintenance costs.
Patent application publication No. CN108131794A discloses an air conditioner fan control method, an electronic device, and a computer-readable storage medium. The air conditioner fan control method controls the wind speed interval of the outer unit through the outdoor temperature, and controls the duty ratio of the outer unit according to the wind speed interval of the outer unit and the frequency of the compressor.
The room temperature is probably not very high under the condition of return air short circuit, but the heat exchange efficiency of the outdoor unit of the air conditioner is seriously reduced, and the fan speed is regulated and controlled only by the outdoor temperature by the air conditioner fan control method, so that the problem of poor heat exchange when the return air is short-circuited can not be effectively solved.
Disclosure of Invention
The invention provides an air conditioner outdoor unit and a control method thereof, aiming at the problems that return air short circuit is easy to occur in the air conditioner outdoor unit in high-temperature weather, the heat exchange efficiency is reduced and the refrigeration effect is reduced, and the air conditioner outdoor unit and the control method thereof have the advantages that the operation mode of a fan is automatically adjusted to improve the heat exchange capacity.
In order to achieve the purpose, the invention provides the following technical scheme:
an outdoor unit of an air conditioner comprises an outdoor unit casing of the air conditioner, a fan used for heat dissipation and a main controller capable of controlling the operation of the outdoor unit of the air conditioner, wherein a first temperature sensor capable of detecting the ambient temperature of the outdoor unit of the air conditioner and a second temperature sensor capable of detecting the air supply temperature of the fan are arranged on the casing, the second temperature sensor and the first temperature sensor are electrically connected to the main controller, and the main controller receives signals of the first temperature sensor and the second temperature sensor and executes the following procedures: the main controller compares the first sensor signal with a preset value, calculates the difference value between the second temperature sensor and the first temperature sensor and compares the difference value with a preset difference value, and controls the rotating speed of the fan according to the comparison result of the difference value and the preset difference value and the comparison result of the first sensor signal and the preset value.
Preferably, the main controller includes a first receiving module capable of receiving a temperature signal of the first temperature sensor, a second receiving module capable of receiving a temperature signal of the second temperature sensor, a calculating module capable of calculating a temperature difference between the second receiving module and the first receiving module, a comparing module capable of comparing a signal of the first temperature sensor with a preset value and comparing a calculated difference in the calculating module with a pre-stored difference, and a main control module capable of controlling the fan to be turned on according to a signal in the comparing module.
Preferably, the first temperature sensor is disposed on the casing of the air conditioner outdoor unit opposite to the blower air supply outlet, and the second temperature sensor is disposed on the casing of the air conditioner outdoor unit close to the blower air supply outlet.
Preferably, the air conditioner further comprises an air deflector which can be used for limiting the air supply range of the fan, and the air deflector is electrically connected with the main controller so as to receive the control of the main controller.
The control method of the air conditioner outdoor unit is characterized by comprising the following steps of:
when the initial environment temperature detected by the first temperature sensor is within a preset range and the difference value between the second temperature sensor and the first temperature sensor is within the preset range, the air conditioner outdoor unit starts a normal mode, and the main controller controls the air deflector to be closed and controls the fan to be in a normal rotating speed; otherwise, the air conditioner outdoor unit starts a high static pressure mode, and the main controller controls the air deflector to be opened and increases the rotating speed of the fan.
Preferably, the control method when the outdoor unit of the air conditioner is in the normal mode includes the steps of:
s11: the first temperature sensor acquires an ambient temperature Ta and transmits an ambient temperature Ta signal to the main controller; the second temperature sensor acquires the air supply temperature Tb of the fan and transmits an air supply temperature Tb signal to the main controller.
S12: the main controller compares the received ambient temperature Ta with a first preset temperature T0, if the ambient temperature Ta is higher than the first preset temperature T0, the main controller controls the air conditioner outdoor unit to enter a high static pressure mode, the fan is switched to a high rotating speed mode from a normal mode, and the air deflector is opened; otherwise, step S13 is performed.
S13: the main controller calculates the difference value of the received air supply temperature Tb signal and the ambient temperature Ta signal to obtain a temperature difference value Tc of (Tb-Ta); the main controller compares the temperature difference Tc with a first preset temperature difference T1, if the temperature difference Tc is lower than the first preset temperature difference T1, the main controller controls the air conditioner outdoor unit to enter a high static pressure mode, the fan is switched to a high rotating speed mode from a normal mode, and the air deflector is started; otherwise, the outdoor unit of the air conditioner keeps the normal mode.
Preferably, the control method of the air conditioner outdoor unit in the high static pressure mode includes the steps of:
s21: the first temperature sensor acquires an ambient temperature Ta and transmits an ambient temperature Ta signal to the main controller; the second temperature sensor acquires the air supply temperature Tb of the fan and transmits an air supply temperature Tb signal to the main controller.
S22: the master compares the received ambient temperature Ta with a second preset temperature T2. If the ambient temperature Ta is higher than the second preset temperature T2, the air conditioner outdoor unit keeps a high static pressure mode; if the ambient temperature Ta is lower than or the second preset temperature T2, the process proceeds to step S23.
S23: the main controller is used for connecting and processing the received ambient temperature Ta signal and the air supply temperature Tb signal to obtain a temperature difference Tc (Tb-Ta); the main controller compares the temperature difference Tc with a second preset temperature difference T3, and if the temperature difference Tc is lower than the second preset temperature difference T3, the air conditioner outdoor unit keeps a high static pressure mode; otherwise, the main controller controls the air conditioner outdoor unit to enter a normal mode, the fan is switched to the normal mode from the high rotating speed mode, and the air deflector is closed.
Preferably, the first preset temperature T0, the second preset temperature T2, the first preset temperature difference T1 and the second preset temperature difference T3 are all adjustable parameters, and the main controller is used for setting the values of the first preset temperature T0, the second preset temperature T2, the first preset temperature difference T1 and the second preset temperature difference T3.
The invention has the beneficial effects that:
according to the air conditioner outdoor unit, the sensing module capable of detecting the ambient temperature and the sensing module capable of detecting the air supply temperature of the fan are arranged, the difference value between the ambient temperature and the air supply temperature and the ambient temperature are calculated, poor heat exchange is judged in the two aspects, and the high static pressure mode can be accurately started to enhance heat exchange. In addition, the air deflector is additionally arranged on the outdoor unit, and the main controller controls the opening of the air deflector in a high static pressure mode, so that the air supply distance is increased, and the heat exchange capacity of the outdoor unit of the air conditioner is enhanced.
According to the control method of the air conditioner outdoor unit, the main controller automatically controls the switching between the high static pressure mode and the normal mode of the air conditioner outdoor unit according to the judgment result by judging whether the ambient temperature is within the preset range and whether the difference value between the ambient temperature and the air supply temperature is within the preset range; not only enhances the heat exchange capability of the outdoor unit of the air conditioner, but also saves resources.
Drawings
FIG. 1 is a schematic view of an outdoor unit of an air conditioner according to the present invention;
FIG. 2 is a schematic structural diagram of a main controller of an outdoor unit of an air conditioner according to the present invention;
FIG. 3 is a schematic diagram of the air supply of the outdoor unit of an air conditioner in the high static pressure mode according to the present invention;
fig. 4 is a schematic diagram of an air supply of a conventional outdoor unit of an air conditioner.
Detailed Description
Hereinafter, embodiments of the present invention will be further described with reference to the accompanying drawings.
The invention provides an air conditioner external system which can be used in the field of air conditioners and has the advantage that the heat exchange capacity is improved by the operation mode of an automatic air conditioner fan 4.
The invention provides an air conditioner outdoor unit, which is structurally shown in figure 1 and comprises a first temperature sensor 2, a second temperature sensor 3, a main controller 1, a fan 4, an air deflector 5 and an air conditioner outdoor unit shell. The air supply outlet is arranged on the shell of the air conditioner outdoor unit, and the air generated by the fan 4 is sent out from the air supply outlet.
The first temperature sensor 2 is electrically connected to the first receiving module 12 of the master controller 1, and the first temperature sensor 2 is configured to detect an ambient temperature and transmit an obtained ambient temperature signal to the first receiving module 12 of the master controller 1. The air conditioner outdoor unit of the commercial air conditioner is mostly arranged in the outdoor air-conditioning room, the space of the outdoor air-conditioning room is narrow, heat is not easy to dissipate, and the temperature of the outdoor air-conditioning room is higher than that of the outdoor air. As shown in fig. 3, the first temperature sensor 2 is provided on the air conditioner outdoor unit casing on the side away from the air supply opening of the fan 4.
The second temperature sensor 3 is electrically connected with the second receiving module 13 of the main controller 1, and the second temperature sensor 3 is used for detecting the air supply temperature of the fan 4 and transmitting the obtained air supply temperature signal of the fan 4 to the second receiving module 13 of the main controller 1. As shown in fig. 3, the second temperature sensor 3 is located close to the air outlet of the fan 4 to indicate the air supply temperature of the outdoor unit fan 4.
As shown in fig. 2, the main controller 1 includes a first receiving module 12 capable of receiving the temperature signal of the first temperature sensor 2, a second receiving module 13 capable of receiving the temperature signal of the second temperature sensor 3, a calculating module 11 capable of calculating the temperature difference between the second receiving module 13 and the first receiving module 12, a comparing module 14 capable of comparing the signal of the first temperature sensor 2 with a preset value and comparing the calculated difference in the calculating module 11 with a prestored difference, and a main control module 15 capable of controlling the fan 4 to be turned on according to the signal of the comparing module 14. The calculation module 11 is electrically connected to the first receiving module 12 and the second receiving module 13, and calculates an ambient temperature signal received by the first receiving module 12 subtracted from the air supply temperature signal received by the second receiving module 13 to obtain a temperature difference value. The calculating module 11 is electrically connected to the comparing module 14, and the comparing module 14 receives the temperature difference from the calculating module 11 and compares the temperature difference with a preset temperature difference. The comparing module 14 is electrically connected to the first receiving module 12, receives the ambient temperature signal from the first receiving module 12, and compares the ambient temperature with a preset temperature. The control module is electrically connected with the comparison module 14, receives the two comparison result signals from the comparison module 14, and controls the rotation speed mode of the fan 4 and the opening and closing of the air deflector 5 according to the comparison result signals of the comparison module 14.
The outdoor unit of the air conditioner has two operation modes including a normal mode and a high static pressure mode. In the high static pressure mode, the fan 4 is in the high rotation speed mode, and the speed of the wind sent by the fan 4 is higher than the rotation speed in the normal rotation speed mode. The fan 4 is electrically connected with the main control module 15 of the main controller 1, and the fan 4 receives a control signal from the main control module 15 of the main controller 1. The main control module 15 adjusts the operation mode of the fan 4 and controls the fan 4 to switch between a high rotation speed mode and a normal rotation speed mode. As shown in fig. 4, in a high-temperature weather, the ambient temperature near the outdoor unit of the air conditioner is high, and the air supply distance of the hot air sent by the fan 4 is short, so that the hot air is concentrated around the outdoor unit of the air conditioner to form a return air short circuit, and the outdoor unit of the air conditioner performs poor heat exchange. Under the high static pressure mode, 4 rotational speeds of fan improve, and the air supply distance increases, can effectually break the return air short circuit, reinforcing heat exchange efficiency. Accordingly, in the high static pressure mode, the noise is larger and more energy is consumed.
As shown in fig. 3, an air deflector 5 is disposed near the air outlet of the fan 4, and the air deflector 5 is mounted on the casing of the air conditioner outdoor unit, electrically connected to the main control module 15 of the main controller 1, and receives the control of the main control module 15 of the main controller 1. The number of the air deflectors 5 is multiple, the air deflectors 5 are arranged around the air supply opening, when the air deflectors 5 are opened, the air supply range of the fan 4 is limited, and the air supply distance of the fan 4 is increased. In high-temperature weather, a return air short circuit is formed around the air conditioner outdoor unit, the air guide plate 5 is used for increasing the air supply distance of the fan 4, the return air short circuit can be effectively broken, and the heat exchange efficiency is improved. In the high static pressure mode, the main control module 15 of the main controller 1 controls the air deflector 5 to be opened; and (5) recovering the normal mode, and controlling the air deflector 5 to be closed by the main control module 15 of the main controller 1. The opening angle of the air deflector 5 is adjustable, and the air supply range and the air supply distance of the fan 4 are changed by adjusting the angle of the air deflector 5. The opening angle of the air deflector 5 is set according to the air supply effect of the fan 4, so that a better heat exchange effect is achieved.
The air conditioner outdoor unit is started in a high static pressure mode, the fan 4 is in a high rotating speed mode, the rotating speed is increased, and the air deflector 5 is started; effectively improve the air supply distance, break the return air short circuit, increase heat exchange efficiency.
The invention also provides an air conditioner outdoor unit control method, which is described below by combining the specific embodiment.
When the ambient temperature or the difference between the air supply temperature and the ambient temperature is not within the preset range, the air conditioner outdoor unit may have a return air short circuit phenomenon, so that the heat exchange efficiency of the air conditioner outdoor unit is reduced, and the refrigerating capacity of the air conditioner is reduced; at the moment, the air conditioner outdoor unit is started in a high static pressure mode, and the main controller 1 controls the air deflector 5 to be started and increases the rotating speed of the fan 4. When the ambient temperature or the difference between the air supply temperature and the ambient temperature is within a preset range, the phenomenon of return air short circuit does not exist, the heat exchange efficiency of the air conditioner outdoor unit is recovered to be normal, the refrigerating capacity of the air conditioner is recovered to be normal, at the moment, the air conditioner outdoor unit is switched to be in a normal mode, and the main controller 1 controls the air deflector 5 to be closed and controls the fan 4 to be in a normal rotating speed.
The detailed implementation steps of the control method of the air conditioner outdoor unit in the normal mode are as follows:
s11: the first temperature sensor 2 acquires an ambient temperature Ta, and transmits an ambient temperature Ta signal to the first receiving module 12 of the main controller 1; the second temperature sensor 3 obtains the air supply temperature Tb of the fan 4, and transmits an air supply temperature Tb signal to the second receiving module 13 of the main controller 1. Two preset parameters, a first preset temperature T0 and a first preset temperature difference T1 are set in the comparison module 14 of the master controller 1.
S12: when the outdoor unit of the air conditioner is in the normal mode, at this time, the fan 4 is in the normal mode and the air deflector 5 is in the off state, the comparing module 14 of the main controller 1 receives the ambient temperature Ta from the first receiving module 12, and the comparing module 14 compares the ambient temperature Ta with the first preset temperature T0. If the ambient temperature Ta is higher than the first preset temperature T0, the main control module 15 of the main control controller 1 receives the signal of the comparison module 14, the main control module 15 controls the outdoor unit of the air conditioner to enter a high static pressure mode, and accordingly, the fan 4 is switched from the normal mode to the high rotation speed mode, and the air deflector 5 is opened. If the ambient temperature Ta is lower than or the first preset temperature T0, step S13 is performed.
S13: the calculation module 11 of the main controller 1 calculates the connection of the received ambient temperature Ta signal and the air supply temperature Tb signal, and the air supply temperature Tb subtracts the ambient temperature Ta to obtain a temperature difference Tc, namely the temperature difference Tc is (Tb-Ta); the comparing module 14 receives the temperature difference signal from the calculating module 11, and the comparing module 14 compares the temperature difference Tc with the first preset temperature difference T1. If the temperature difference Tc is lower than the first preset temperature difference T1, the main control module 15 of the main controller 1 receives the signal from the comparison module 14, the main control module 15 controls the air conditioner outdoor unit to enter the high static pressure mode, and accordingly, the fan 4 is switched from the normal mode to the high rotation speed mode, and the air deflector 5 is turned on. If the temperature difference Tc is higher than or equal to the first preset temperature difference T1, the main control module 15 receives the signal from the comparison module 14, and the main control module 15 controls the outdoor unit to maintain the normal mode.
The detailed implementation steps of the control method of the air conditioner outdoor unit in the high static pressure mode are as follows:
s21: the first temperature sensor 2 acquires an ambient temperature Ta, and transmits an ambient temperature Ta signal to the first receiving module 12 of the main controller 1; the second temperature sensor 3 obtains the air supply temperature Tb of the fan 4, and transmits an air supply temperature Tb signal to the second receiving module 13 of the main controller 1. The comparison module 14 of the master 1 is provided with two preset parameters, a second preset temperature T2 and a second preset temperature difference T3.
S22: when the outdoor unit of the air conditioner is in the high static pressure mode, at this time, the fan 4 is in the high rotation speed mode and the air deflector 5 is in the open state, the comparison circuit of the main controller 1 receives the ambient temperature signal from the first receiving module 12, and the comparison module 14 compares the ambient temperature Ta with the second preset temperature T2. If the ambient temperature Ta is higher than the first preset temperature T0, the main control module 15 of the main controller 1 receives the signal from the comparison module 14, and the main control module 15 controls the outdoor unit of the air conditioner to maintain the high static pressure mode. If the ambient temperature Ta is lower than or the first preset temperature T0, step S23 is performed.
S23: the calculation module 11 of the main controller 1 calculates the connection of the received ambient temperature Ta signal and the air supply temperature Tb signal, and the air supply temperature Tb subtracts the ambient temperature Ta to obtain a temperature difference Tc, namely the temperature difference Tc is (Tb-Ta); the comparing module 14 of the master controller 1 receives the temperature difference signal from the calculating module 11, and the comparing module 14 compares the temperature difference Tc with the second set temperature difference T1. If the temperature difference Tc is higher than the second preset temperature difference T3, the main control module 15 receives the signal from the comparison module 14 and controls the outdoor unit of the air conditioner to maintain the normal mode. If the temperature difference Tc is lower than or equal to the second preset temperature difference T3, the main control module 15 receives the signal from the comparison module 14 and controls the outdoor unit of the air conditioner to enter the normal mode, and accordingly, the fan 4 is switched from the high rotation speed mode to the normal mode, and the air deflector 5 is turned off.
The first preset temperature T0, the second preset temperature T2, the first preset temperature difference T1 and the second preset temperature difference T3 are all adjustable parameters, and the values of the first preset temperature T0, the second preset temperature T2, the first preset temperature difference T1 and the second preset temperature difference T3 can be set through the master 1. By adjusting the first preset temperature T0, the second preset temperature T2, the first preset temperature difference T1 and the second preset temperature difference T3, the outdoor unit of the air conditioner can correct the switching condition of the working mode, can accurately judge the occurrence or the end of the short-circuit condition of return air, and complete the switching between the high static pressure mode and the normal mode.
The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention in other forms, and any person skilled in the art may apply the above modifications or changes to the equivalent embodiments with equivalent changes, without departing from the technical spirit of the present invention, and any simple modification, equivalent change and change made to the above embodiments according to the technical spirit of the present invention still belong to the protection scope of the technical spirit of the present invention.
Claims (8)
1. The utility model provides an air condensing units, includes air condensing units casing, can be used to radiating fan to and the steerable air condensing units operation master controller, its characterized in that: the shell is provided with a first temperature sensor capable of detecting the ambient temperature of an outdoor unit of an air conditioner and a second temperature sensor capable of detecting the air supply temperature of the fan, the first temperature sensor and the second temperature sensor are electrically connected to the main controller, and the main controller receives signals of the first temperature sensor and the second temperature sensor and executes the following procedures: the main controller compares a first sensor signal with a preset value, calculates a difference value between the second temperature sensor and the first temperature sensor and compares the difference value with a preset difference value, and controls the rotating speed of the fan according to a comparison result of the difference value and the preset difference value and a comparison result of the first sensor signal and the preset value.
2. The outdoor unit of an air conditioner according to claim 1, wherein: the main controller comprises a first receiving module capable of receiving a temperature signal of the first temperature sensor, a second receiving module capable of receiving a temperature signal of the second temperature sensor, a calculating module capable of calculating a temperature difference value between the second receiving module and the first receiving module, a comparing module capable of comparing a signal of the first temperature sensor with a preset value and comparing the calculated difference value with a pre-stored difference value in the calculating module, and a main control module capable of controlling the fan to be started according to the signal in the comparing module.
3. The outdoor unit of an air conditioner according to claim 1, wherein: the first temperature sensor is arranged on the shell of the air conditioner outdoor unit and opposite to the air supply outlet of the fan, and the second temperature sensor is arranged on the shell of the air conditioner outdoor unit and close to the air supply outlet of the fan.
4. The outdoor unit of an air conditioner according to claim 1, wherein: the air guide plate is electrically connected with the main controller to receive the control of the main controller.
5. An outdoor unit of an air conditioner, comprising the outdoor unit of any one of claims 1 to 4, and further comprising:
when the initial environment temperature detected by the first temperature sensor is within a preset range and the difference value between the second temperature sensor and the first temperature sensor is within the preset range, the air conditioner outdoor unit starts a normal mode, and the main controller controls the air deflector to be closed and controls the fan to be in a normal rotating speed; otherwise, the air conditioner outdoor unit starts a high static pressure mode, and the main controller controls the air deflector to be opened and increases the rotating speed of the fan.
6. The outdoor unit of claim 5, wherein the control method when the outdoor unit is in the normal mode comprises the steps of:
s11: the first temperature sensor acquires an ambient temperature Ta and transmits an ambient temperature Ta signal to the main controller; the second temperature sensor acquires the air supply temperature Tb of the fan and transmits an air supply temperature Tb signal to the main controller;
s12: the main controller compares the received ambient temperature Ta with a first preset temperature T0, if the ambient temperature Ta is higher than the first preset temperature T0, the main controller controls the air conditioner outdoor unit to enter a high static pressure mode, the fan is switched to a high rotating speed mode from a normal mode, and the air deflector is opened; otherwise, go to step S13;
s13: the main controller calculates the difference value of the received air supply temperature Tb signal and the ambient temperature Ta signal to obtain a temperature difference value Tc of (Tb-Ta); the main controller compares the temperature difference Tc with a first preset temperature difference T1, if the temperature difference Tc is lower than the first preset temperature difference T1, the main controller controls the air conditioner outdoor unit to enter a high static pressure mode, the fan is switched to a high rotating speed mode from a normal mode, and the air deflector is started; otherwise, the outdoor unit of the air conditioner keeps the normal mode.
7. The outdoor unit of claim 5, wherein the outdoor unit of the air conditioner is controlled in the high static pressure mode, comprising:
s21: the first temperature sensor acquires an ambient temperature Ta and transmits an ambient temperature Ta signal to the main controller; the second temperature sensor acquires the air supply temperature Tb of the fan and transmits an air supply temperature Tb signal to the main controller;
s22: the main controller compares the received ambient temperature Ta with a second preset temperature T2, and if the ambient temperature Ta is higher than the second preset temperature T2, the air conditioner outdoor unit keeps a high static pressure mode; if the ambient temperature Ta is lower than or the second preset temperature T2, performing step S23;
s23: the main controller is used for connecting and processing the received ambient temperature Ta signal and the air supply temperature Tb signal to obtain a temperature difference Tc (Tb-Ta); the main controller compares the temperature difference Tc with a second preset temperature difference T3, and if the temperature difference Tc is lower than the second preset temperature difference T3, the air conditioner outdoor unit keeps a high static pressure mode; otherwise, the main controller controls the air conditioner outdoor unit to enter a normal mode, the fan is switched to the normal mode from the high rotating speed mode, and the air deflector is closed.
8. The outdoor unit of an air conditioner of claim 6 or 7, wherein: the first preset temperature T0, the second preset temperature T2, the first preset temperature difference T1 and the second preset temperature difference T3 are all adjustable parameters, and numerical values of the first preset temperature T0, the second preset temperature T2, the first preset temperature difference T1 and the second preset temperature difference T3 are set through the main controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| JP3346692B2 (en) * | 1995-11-10 | 2002-11-18 | 三菱電機株式会社 | Outdoor unit of air conditioner |
| JP4706273B2 (en) * | 2005-02-03 | 2011-06-22 | 三菱電機株式会社 | Air conditioner |
| CN103574835B (en) * | 2012-07-31 | 2016-03-16 | 美的集团股份有限公司 | The control method of outdoor fan of air conditioner and device |
| CN105318507B (en) * | 2015-11-30 | 2017-12-12 | 广东美的制冷设备有限公司 | A kind of air-conditioning heat dissipation control method and system |
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| CN107270423B (en) * | 2017-07-31 | 2020-03-24 | 青岛海信日立空调***有限公司 | Control method and device for fan of air conditioner outdoor unit |
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