CN106556079B - Outdoor unit, and temperature control method and device of electric control box - Google Patents
Outdoor unit, and temperature control method and device of electric control box Download PDFInfo
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- CN106556079B CN106556079B CN201611059896.6A CN201611059896A CN106556079B CN 106556079 B CN106556079 B CN 106556079B CN 201611059896 A CN201611059896 A CN 201611059896A CN 106556079 B CN106556079 B CN 106556079B
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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
- F24F1/20—Electric components for separate outdoor units
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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
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
-
- 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
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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
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
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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
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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
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
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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
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
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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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2221/00—Details or features not otherwise provided for
- F24F2221/34—Heater, e.g. gas burner, electric air heater
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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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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Combustion & Propulsion (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Signal Processing (AREA)
- Fuzzy Systems (AREA)
- Life Sciences & Earth Sciences (AREA)
- Atmospheric Sciences (AREA)
- Thermal Sciences (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses an outdoor unit, which is applied to an air conditioner and comprises an electric control box and a refrigerant loop; the refrigerant loop flows through the inside of the electric control box and is communicated with a refrigerant pipe of the air conditioner, a refrigerant pump is arranged in the refrigerant loop, and the refrigerant pump is in signal connection with a main control board of the electric control box. The invention also discloses a temperature control method and a temperature control device of the electric control box. The invention can control the starting operation of the refrigerant pump according to the environmental temperature in the electric control box, enables the refrigerant of the refrigerant pipe to flow through the refrigerant loop by starting the refrigerant pump, and further heats the electric control box by enabling the refrigerant with higher temperature to quickly flow through the part of the refrigerant loop positioned in the electric control box, thereby avoiding the influence on the performance of the air conditioner caused by the long-time operation of the electric control box under the condition of lower temperature, and prolonging the service life of the air conditioner.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a temperature control method and device for an outdoor unit and an electric control box.
Background
With the rapid development of air conditioning technology, air conditioners play an increasingly important role in people's daily life.
However, the electronic components of the outdoor unit of the air conditioner have temperature limitation during operation, the lowest working environment temperature of the electronic components is-20 ℃, and if the environment temperature is lower than the lowest working temperature of the electronic components, the working state of the electronic components is unstable, the working characteristics of the electronic components are affected, the operation performance of the air conditioner is affected, and even when the temperature exceeds the working temperature range of the electronic components, the air conditioner stops working. For example, in the air conditioner installed in russia, south and north poles, plateau snow mountain and other places, the existing air conditioner has low working performance and even cannot work normally due to the low temperature of the environment where the air conditioner is located.
Disclosure of Invention
The invention provides a temperature control method and a temperature control device for an outdoor unit and an electric control box, and aims to solve the technical problem that when the temperature is too low, the working state of electronic components of an air conditioner is unstable, so that the running performance of the air conditioner is influenced, and even the air conditioner stops working.
In order to achieve the purpose, the outdoor unit provided by the invention is applied to an air conditioner and comprises an electric control box and a refrigerant loop; the refrigerant loop flows through the inside of the electric control box and is communicated with a refrigerant pipe of the air conditioner, a refrigerant pump is arranged in the refrigerant loop, and the refrigerant pump is in signal connection with a main control board of the electric control box.
Preferably, an electronic expansion valve in signal connection with the main control board is further arranged in the refrigerant loop, and the electronic expansion valve is connected with the refrigerant pump in parallel.
In addition, in order to achieve the above object, the present invention further provides a temperature control method of an electronic control box, which is applied to an outdoor unit of an air conditioner, and is characterized in that the outdoor unit is provided with a refrigerant loop, the refrigerant loop flows through the inside of the electronic control box and is communicated with a refrigerant pipe of the air conditioner, a refrigerant pump is arranged in the refrigerant loop, and the temperature control method of the electronic control box comprises the following steps:
when the outdoor unit is powered on, acquiring the ambient temperature in the electric control box;
and when the acquired environment temperature is lower than a first preset temperature, controlling the refrigerant pump to start up to operate.
Preferably, an electronic expansion valve is further disposed in the refrigerant loop, the electronic expansion valve is disposed in parallel with the refrigerant pump, and after the step of controlling the refrigerant pump to start and operate, the temperature control method of the electronic control box further includes:
when the refrigerant pump runs, acquiring the ambient temperature in the electric control box in real time;
when the obtained environment temperature is higher than a second preset temperature, controlling the refrigerant pump to stop running and controlling the compressor to start running, wherein the second preset temperature is higher than the first preset temperature;
and controlling the opening of the electronic expansion valve.
Preferably, after the step of controlling the opening of the electronic expansion valve, the method for controlling the temperature of the electronic control box further comprises:
after the electronic expansion valve is opened, acquiring the ambient temperature in the electronic control box in real time;
and adjusting the opening degree of the electronic expansion valve based on the acquired environment temperature.
Preferably, after the step of controlling the refrigerant pump to stop operating and the step of controlling the compressor to start operating, the method for controlling the temperature of the electronic control box further includes:
acquiring the indoor environment temperature corresponding to the outdoor unit;
and when the indoor environment temperature reaches the set temperature of the air conditioner, controlling the refrigerant pump to start and operate, and controlling the compressor to stop operating.
In addition, in order to achieve the above object, the present invention further provides a temperature control device of an electric control box, which is applied to an outdoor unit of an air conditioner, wherein the outdoor unit is provided with a refrigerant loop, the refrigerant loop flows through the inside of the electric control box and is communicated with a refrigerant pipe of the air conditioner, a refrigerant pump is arranged in the refrigerant loop, and the temperature control device of the electric control box comprises:
the first acquisition module is used for acquiring the ambient temperature in the electric control box when the outdoor unit is powered on;
and the first control module is used for controlling the refrigerant pump to start up and operate when the acquired environment temperature is less than a first preset temperature.
Preferably, an electronic expansion valve is further disposed in the refrigerant loop, the electronic expansion valve is disposed in parallel with the refrigerant pump, and the temperature control device of the electronic control box further includes:
the second acquisition module is used for acquiring the ambient temperature in the electric control box in real time when the refrigerant pump runs;
the second control module is used for controlling the refrigerant pump to stop running and controlling the compressor to start running when the obtained ambient temperature is higher than a second preset temperature, wherein the second preset temperature is higher than the first preset temperature;
and the third control module is used for controlling the opening of the electronic expansion valve.
Preferably, the temperature control device of the electronic control box further comprises:
the third acquisition module is used for acquiring the ambient temperature in the electronic control box in real time after the electronic expansion valve is opened;
and the adjusting module is used for adjusting the opening degree of the electronic expansion valve based on the acquired environment temperature.
Preferably, the temperature control device of the electronic control box further comprises:
the fourth acquisition module is used for acquiring the indoor environment temperature corresponding to the outdoor unit;
and the fourth control module is used for controlling the refrigerant pump to start up and operate and controlling the compressor to stop operating when the indoor environment temperature reaches the set temperature of the air conditioner.
According to the invention, the outdoor unit is provided with the refrigerant loop, so that the refrigerant loop flows through the inside of the electric control box 2 and is communicated with the refrigerant pipe of the air conditioner, the refrigerant pump in signal connection with the main control board of the electric control box is arranged in the refrigerant loop, the starting operation of the refrigerant pump can be controlled according to the environmental temperature in the electric control box, the refrigerant of the refrigerant pipe flows through the refrigerant loop by starting the refrigerant pump, and the part of the refrigerant with higher temperature in the electric control box, which quickly flows through the refrigerant loop, is heated by the electric control box, so that the influence on the performance of the air conditioner caused by the long-time operation of the electric control box under the condition of lower temperature is avoided, and the service.
Drawings
FIG. 1 is a schematic view of an outdoor unit according to the present invention;
FIG. 2 is a schematic flow chart illustrating a temperature control method of an electrical control box according to a first embodiment of the present invention;
FIG. 3 is a schematic flow chart illustrating a temperature control method for an electronic control box according to a second embodiment of the present invention;
FIG. 4 is a schematic flow chart illustrating a method for controlling the temperature of an electronic control box according to a third embodiment of the present invention;
FIG. 5 is a schematic flow chart illustrating a fourth embodiment of a method for controlling temperature of an electronic control box according to the present invention;
FIG. 6 is a functional block diagram of a first embodiment of a temperature control device of an electrical control box according to the present invention;
FIG. 7 is a functional block diagram of a second embodiment of a temperature control device of an electrical control box according to the present invention;
FIG. 8 is a functional block diagram of a third embodiment of a temperature control device of an electrical control box according to the present invention;
fig. 9 is a functional block diagram of a fourth embodiment of the temperature control device of the electrical control box according to the present invention.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 1 | Refrigerant circuit | 2 | Electric control box |
| 3 | Refrigerant pipe | 4 | Refrigerant pump |
| 5 | Electronic expansion valve | 6 | Compressor with a compressor housing having a plurality of compressor blades |
| 7 | Outdoor machine | 8 | Indoor machine |
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 invention provides an outdoor unit, and referring to fig. 1, fig. 1 is a schematic structural diagram of the outdoor unit of the invention.
In this embodiment, the outdoor unit 7 is applied to an air conditioner, and the outdoor unit 7 includes an electric control box 2 and a refrigerant loop 1; the refrigerant loop 1 flows through the inside of the electric control box 2 and is communicated with a refrigerant pipe 3 of the air conditioner, a refrigerant pump 4 is arranged in the refrigerant loop, and the refrigerant pump 4 is in signal connection with a main control board of the electric control box 2.
The refrigerant pump 4 may be disposed in the electronic control box 2, that is, the refrigerant pump 4 is disposed in a portion of the refrigerant circuit 1 inside the electronic control box 2, or the refrigerant pump 4 is disposed outside the electronic control box 2, that is, the refrigerant pump 4 is disposed in a portion of the refrigerant circuit 1 outside the electronic control box 2, and the refrigerant circuit 1 includes a plurality of refrigerant pipes. The refrigerant pipe 3 of the air conditioner is communicated with the compressor 6 and the indoor unit 8 to realize heat exchange between the outdoor unit 7 and the indoor environment and adjust the temperature of the indoor environment. The refrigerant pipe 3 of the air conditioner is a pipe for connecting main refrigeration components such as a heat exchanger, a valve, and a compressor 6, through which a refrigerant flows in an air conditioning system.
In the present embodiment, a temperature sensor is provided in the electronic control box 2, and the temperature sensor is used for detecting the ambient temperature in the electronic control box. When the outdoor unit 7 is powered on, the electronic control box 2 is powered on at the same time, the main control board of the electronic control box 2 obtains the ambient temperature in the electronic control box 2 detected by the temperature sensor, when the ambient temperature is lower than a first preset temperature, the main control board controls the refrigerant pump 4 to start running, so that the refrigerant of the refrigerant pipe 3 flows through the refrigerant loop 1, and the refrigerant flows through the refrigerant pipe 3 in the electronic control box 2 through the refrigerant loop 1, so that the refrigerant with higher temperature of the indoor unit 8 quickly flows through the refrigerant pipe 3 in the electronic control box 2 through the refrigerant loop 1, and then the electronic control box 2 is heated, wherein when the temperature of the electronic control box 2 is lower than 20 ℃, for example, the corresponding indoor environment is better in sealing performance, heats and the like, so that the temperature of the refrigerant pipe 3 of the indoor unit 8 is far higher than the temperature of the electronic control box 2, and therefore, the electronic control box 2 can be heated.
The first preset temperature is the lowest temperature at which each electronic component of the outdoor unit 7 can normally operate, that is, the first preset temperature is reasonably set according to each electronic component of the outdoor unit 7.
It should be emphasized that, in order to improve the efficiency and speed of temperature rise in the electronic control box 2 when the refrigerant is used for heating, the outer wall of the box body and the inner wall of the box body of the electronic control box 2 are provided with heat insulation materials to reduce the loss of heat in the electronic control box 2, and preferably, the electronic control box 2 is a sealed electronic control box 2.
Further, in an embodiment, referring to fig. 1, the refrigerant circuit 1 is further provided with an electronic expansion valve 5 in signal connection with the main control board, and the electronic expansion valve 5 is connected in parallel with the refrigerant pump 4.
In this embodiment, after the compressor 6 is turned on, the refrigerant in the air-conditioning refrigerant pipe 3 continuously flows to exchange the indoor environment and the outdoor environment, so as to increase the ambient temperature in the electronic control box 2. When the temperature in the electric control box rises to ensure that the compressor normally operates, the main control board controls the compressor to start to operate, meanwhile, in order to avoid overhigh ambient temperature in the electric control box 2, the flow and the flow speed of the refrigerant flowing through the refrigerant loop 1 need to be reduced, the main control board controls the refrigerant pump 4 to stop operating and opens the electronic expansion valve 5, so that the flow and the flow speed of the refrigerant flowing through the refrigerant loop 1 are controlled by the electronic expansion valve 5, the electric control box 2 maintains the current temperature, or the temperature of the electric control box 2 is maintained in a reasonable temperature range, the electric control box 2 can stably operate, the performance of the air conditioner is prevented from being influenced by the fact that the electric control box 2 operates at a lower temperature, and the service life of the air conditioner is prolonged. It is easy to understand that, compared with the refrigerant pump 4, the electronic expansion valve 5 is used to control the flow rate and the flow velocity of the refrigerant flowing through the refrigerant circuit 1, so that the flow rate of the refrigerant flowing through the refrigerant circuit 1 can be reduced, the speed of adjusting the indoor environment temperature can be increased, and the performance of the air conditioner can be improved.
The embodiment provides an outdoor unit, a refrigerant loop 1 is arranged on an outdoor unit 7, the refrigerant loop 1 flows through the inside of an electric control box 2 and is communicated with a refrigerant pipe 3 of an air conditioner, a refrigerant pump 4 in signal connection with a main control board of the electric control box 2 is arranged in the refrigerant loop, the refrigerant pump 4 can be controlled to start up and operate according to the ambient temperature in the electric control box 2, the refrigerant of the refrigerant pipe 3 flows through the refrigerant loop 1 by opening the refrigerant pump 4, and the part of the refrigerant with higher temperature, which is located in the electric control box 2, quickly flows through the refrigerant loop 1 and is heated by the electric control box 2, so that the situation that the performance of the air conditioner is influenced due to the fact that the electric control box 2 runs at lower temperature for a long time is avoided, and the service.
The invention provides a temperature control method of an electric control box. Referring to fig. 2, fig. 2 is a schematic flow chart of a temperature control method of an electrical control box according to a first embodiment of the present invention.
In this embodiment, the temperature control method of the electronic control box is applied to an outdoor unit 7 of an air conditioner, as shown in fig. 1, the outdoor unit 7 is provided with a refrigerant circuit 1, the refrigerant circuit 1 flows through the inside of the electronic control box 2 and is communicated with a refrigerant pipe 3 of the air conditioner, and a refrigerant pump 4 is arranged in the refrigerant circuit 1.
The refrigerant pump 4 may be disposed in the electronic control box 2, that is, the refrigerant pump 4 is disposed in a portion of the refrigerant circuit 1 inside the electronic control box 2, or the refrigerant pump 4 is disposed outside the electronic control box 2, that is, the refrigerant pump 4 is disposed in a portion of the refrigerant circuit 1 outside the electronic control box 2, and the refrigerant circuit 1 includes a plurality of refrigerant pipes. The refrigerant pipe 3 of the air conditioner is communicated with the compressor 6 and the indoor unit 8 to realize heat exchange between the outdoor unit 7 and the indoor environment and adjust the temperature of the indoor environment. The refrigerant pipe 3 of the air conditioner is a pipe for connecting main refrigeration components such as a heat exchanger, a valve, and a compressor 6, through which a refrigerant flows in an air conditioning system.
The temperature control method of the electric control box comprises the following steps:
step S10, when the outdoor unit is powered on, the ambient temperature in the electric control box is obtained;
in this embodiment, a temperature sensor is disposed in the electronic control box 2, when the outdoor unit 7 is powered on, the electronic control box 2 is powered on at the same time, and the main control board of the electronic control box 2 obtains the ambient temperature in the electronic control box 2 detected by the temperature sensor.
And step S20, controlling the refrigerant pump to start up when the acquired environment temperature is lower than a first preset temperature.
The first preset temperature is the lowest temperature at which each electronic component of the outdoor unit 7 can normally operate, that is, the first preset temperature is reasonably set according to each electronic component of the outdoor unit 7.
Generally, when the ambient temperature in the electronic control box 2 is low, if the compressor 6 is directly turned on, the operating state of each electronic component of the outdoor unit 7 may be unstable, and the operating characteristics of each electronic component may be affected, thereby affecting the performance and the service life of the air conditioner.
In this embodiment, when the obtained ambient temperature is lower than the first preset temperature, the refrigerant pump 4 is controlled to start to operate, so that the refrigerant of the refrigerant pipe 3 flows through the refrigerant circuit 1, and the refrigerant flows through the refrigerant pipe 3 of the refrigerant circuit 1 located in the electronic control box 2, so that the refrigerant with higher temperature of the indoor unit 8 quickly flows through the refrigerant pipe 3 of the refrigerant circuit 1 located in the electronic control box 2, and then heats the electronic control box 2, wherein when the temperature of the electronic control box 2 is lower, for example, lower than 20 ℃, the temperature of the refrigerant pipe 3 of the indoor unit 8 is far higher than the temperature of the electronic control box 2 due to better sealing performance, heating and the like of the corresponding indoor environment, and thus the electronic control box 2 can be heated in the above manner.
It should be emphasized that, in order to improve the efficiency and speed of temperature rise in the electronic control box 2 when the refrigerant is used for heating, the outer wall of the box body and the inner wall of the box body of the electronic control box 2 are provided with heat insulation materials to reduce the loss of heat in the electronic control box 2, and preferably, the electronic control box 2 is a sealed electronic control box 2.
According to the temperature control method of the electric control box provided by the embodiment, the ambient temperature in the electric control box is acquired when the outdoor unit is powered on, then the refrigerant pump is controlled to be started to operate when the acquired ambient temperature is lower than a first preset temperature, the refrigerant of the refrigerant pipe 3 flows through the refrigerant loop 1 by starting the refrigerant pump 4, and then the part of the refrigerant with higher temperature, which is located in the electric control box 2, quickly flows through the refrigerant loop 1 is heated by the electric control box 2, so that the influence on the performance of the air conditioner caused by the long-time operation of the electric control box 2 under the condition of lower temperature is avoided, and the service life of the air conditioner is prolonged.
Referring to fig. 3, in the present embodiment, an electronic expansion valve 5 in signal connection with the main control board is further disposed in the refrigerant loop 1, and the electronic expansion valve 5 is disposed in parallel with the refrigerant pump 4.
After step S20, the method for controlling the temperature of an electronic control box further includes:
step S30, acquiring the ambient temperature in the electric control box in real time when the refrigerant pump runs;
in this embodiment, after the refrigerant pump 4 is turned on, the refrigerant pump 4 makes the refrigerant with a higher temperature flow through the portion of the refrigerant circuit 1 located in the electronic control box 2, so as to gradually raise the ambient temperature in the electronic control box 2, and when the refrigerant pump 4 is operated, the main control board of the electronic control box 2 obtains the ambient temperature in the electronic control box 2 in real time, so as to determine whether the current ambient temperature meets the condition for turning on the compressor 6.
Step S40, when the obtained environment temperature is higher than a second preset temperature, controlling the refrigerant pump to stop running and controlling the compressor to start running, wherein the second preset temperature is higher than the first preset temperature;
the second preset temperature is a temperature at which the compressor 6 can normally operate, and the second preset temperature is greater than the first preset temperature.
In this embodiment, when the obtained ambient temperature is greater than a second preset temperature, the main control board controls the refrigerant pump 4 to stop operating, and controls the compressor 6 to start to operate, so as to adjust the indoor ambient temperature corresponding to the air conditioner.
In step S50, the electronic expansion valve is controlled to open.
In this embodiment, after the compressor 6 is turned on, the refrigerant in the air-conditioning refrigerant pipe 3 continuously flows to exchange the indoor environment and the outdoor environment, so as to increase the ambient temperature in the electronic control box 2. When the temperature in the electric control box rises to ensure that the compressor normally operates, the main control board controls the compressor to start to operate, meanwhile, in order to avoid overhigh ambient temperature in the electric control box 2, the flow and the flow speed of the refrigerant flowing through the refrigerant loop 1 need to be reduced, the main control board controls the refrigerant pump 4 to stop operating and opens the electronic expansion valve 5, so that the refrigerant in the air-conditioning refrigerant pipe 3 can continuously flow through the part of the refrigerant loop 1 in the electric control box 2 by opening the electronic expansion valve 5, the electric control box 2 maintains the current temperature, or the temperature of the electric control box 2 is maintained in a reasonable temperature range, the electric control box 2 can stably operate, the influence on the performance of the air conditioner caused by the fact that the electric control box 2 operates at a lower temperature is avoided, and the service life of the air conditioner is prolonged. It is easy to understand that, compared with the refrigerant pump 4, the electronic expansion valve 5 is used to control the flow rate and the flow velocity of the refrigerant flowing through the refrigerant circuit 1, so that the flow rate of the refrigerant flowing through the refrigerant circuit 1 can be reduced, the speed of adjusting the indoor environment temperature can be increased, and the performance of the air conditioner can be improved.
According to the temperature control method of the electronic control box provided by the embodiment, the ambient temperature in the electronic control box is obtained in real time when the refrigerant pump operates, then the refrigerant pump is controlled to stop operating when the obtained ambient temperature is higher than the second preset temperature, the compressor is controlled to start operating, and then the electronic expansion valve is controlled to open, so that the compressor 6 is controlled to start operating and the electronic expansion valve is opened when the ambient temperature in the electronic control box 2 is higher than the second preset temperature, and the refrigerant flowing through the refrigerant loop 1 is controlled by the electronic expansion valve when the temperature of the corresponding indoor environment is adjusted, so that the temperature of the electronic control box 2 is maintained in a reasonable temperature range.
A third embodiment of the temperature control method of an electronic control box according to the present invention is proposed based on the second embodiment, and referring to fig. 4, in this embodiment, after step S50, the temperature control method of an electronic control box further includes:
step S60, acquiring the ambient temperature in the electric control box in real time after the electronic expansion valve is opened;
in this embodiment, after the electronic expansion valve 5 is opened, the main control board obtains the ambient temperature in the electronic control box 2 in real time, so as to adjust the opening of the electronic expansion valve 5 according to the ambient temperature, and further adjust the flow rate and the flow velocity of the refrigerant flowing through the electronic control box 2, so that the ambient temperature in the electronic control box 2 is maintained within the drinking range.
In step S70, the opening degree of the electronic expansion valve is adjusted based on the acquired ambient temperature.
In this embodiment, different temperature ranges may be set, each temperature range corresponds to a different opening degree of the electronic expansion valve 5, a temperature range with a lower temperature value corresponds to a larger opening degree of the electronic expansion valve 5, and a temperature range with a higher temperature value corresponds to a smaller opening degree of the electronic expansion valve 5.
In this embodiment, when the ambient temperature in the electronic control box 2 is obtained, the main control board adjusts the opening degree of the electronic expansion valve 5 based on the ambient temperature, and further controls the flow rate and the flow velocity of the refrigerant flowing through the refrigerant circuit 1, so that the electronic control box 2 maintains the current temperature, or the temperature of the electronic control box 2 is maintained within a reasonable temperature range, and the electronic control box 2 can stably operate. Specifically, when different temperature ranges are currently set and the opening degrees of the electronic expansion valves 5 corresponding to the temperature ranges are different, if the ambient temperature in the electronic control box 2 is obtained, the temperature range to which the ambient temperature belongs is determined, the opening degree of the electronic expansion valve 5 corresponding to the temperature range to which the ambient temperature belongs is obtained, and then the opening degree of the electronic expansion valve 5 is adjusted to the opening degree of the electronic expansion valve 5 corresponding to the temperature range to which the ambient temperature belongs.
According to the temperature control method of the electronic control box provided by the embodiment, the ambient temperature in the electronic control box is acquired in real time after the electronic expansion valve is opened, and then the opening degree of the electronic expansion valve is adjusted based on the acquired ambient temperature, so that the opening degree of the electronic expansion valve 5 is adjusted according to the ambient temperature, and further the flow rate and the flow speed of the refrigerant flowing through the refrigerant loop 1 are controlled, so that the ambient temperature in the electronic control box 2 is maintained within a reasonable temperature range, and further the electronic control box 2 is prevented from operating again under the condition of low temperature.
A fourth embodiment of the temperature control method of an electronic control box according to the present invention is proposed based on the second embodiment, and referring to fig. 5, in the present embodiment, after step S50, the method includes:
step S80, obtaining the indoor environment temperature corresponding to the outdoor unit;
and step S90, when the indoor environment temperature reaches the set temperature of the air conditioner, controlling the refrigerant pump to start to operate and controlling the compressor to stop operating.
In this embodiment, after the compressor 6 is turned on, the air conditioner starts to adjust the indoor ambient temperature, and the air conditioner transfers the indoor heat to the outdoor through the refrigerant pipe 3, at this time, the temperature of the refrigerant in the refrigerant pipe 3 located outdoors is high. When the indoor environment temperature reaches the set temperature of the air conditioner, the compressor 6 is controlled to stop running, the refrigerant in the air conditioner refrigerant pipe 3 does not flow, if the environment temperature in the electronic control box 2 needs to be maintained through refrigerant heat exchange, the refrigerant pump 4 needs to be started again, namely, the refrigerant pump 4 is controlled to start running, namely, the refrigerant in the refrigerant pipe 3 flows through the refrigerant loop 1 through the power of the refrigerant pump 4. It is easy to understand that the electronic expansion valve 5 can be closed at the same time when the refrigerant pump 4 is turned on.
According to the temperature control method of the electric control box provided by the embodiment, the refrigerant pump 4 is started again when the indoor environment temperature reaches the set temperature of the air conditioner by acquiring the indoor environment temperature corresponding to the outdoor unit and controlling the refrigerant pump to start running and controlling the compressor to stop running, so that the refrigerant of the refrigerant pipe 3 flows through the refrigerant loop 1 by the power of the refrigerant pump 4, the environment temperature in the electric control box 2 is maintained in a reasonable temperature range, and the electric control box 2 is prevented from running again under the condition of low temperature.
The invention further provides a temperature control device of the electric control box. Referring to fig. 6, fig. 6 is a functional block diagram of a temperature control device of an electrical control box according to a first embodiment of the present invention.
In this embodiment, the temperature control device of the electronic control box is applied to an outdoor unit 7 of an air conditioner, as shown in fig. 1, the outdoor unit 7 is provided with a refrigerant circuit 1, the refrigerant circuit 1 flows through the inside of the electronic control box 2 and is communicated with a refrigerant pipe 3 of the air conditioner, and a refrigerant pump 4 is arranged in the refrigerant circuit 1.
The refrigerant pump 4 may be disposed in the electronic control box 2, that is, the refrigerant pump 4 is disposed in a portion of the refrigerant circuit 1 inside the electronic control box 2, or the refrigerant pump 4 is disposed outside the electronic control box 2, that is, the refrigerant pump 4 is disposed in a portion of the refrigerant circuit 1 outside the electronic control box 2, and the refrigerant circuit 1 includes a plurality of refrigerant pipes. The refrigerant pipe 3 of the air conditioner is communicated with the compressor 6 and the indoor unit 8 to realize heat exchange between the outdoor unit 7 and the indoor environment and adjust the temperature of the indoor environment. The refrigerant pipe 3 of the air conditioner is a pipe for connecting main refrigeration components such as a heat exchanger, a valve, and a compressor 6, through which a refrigerant flows in an air conditioning system.
This temperature control device of automatically controlled box includes:
the first obtaining module 10 is configured to obtain an ambient temperature in the electronic control box when the outdoor unit is powered on;
in this embodiment, a temperature sensor is disposed in the electronic control box 2, when the outdoor unit 7 is powered on, the electronic control box 2 is powered on at the same time, and the first obtaining module 10 obtains the ambient temperature in the electronic control box 2 detected by the temperature sensor.
The first control module 20 is configured to control the refrigerant pump to start up and operate when the obtained ambient temperature is lower than a first preset temperature.
The first preset temperature is the lowest temperature at which each electronic component of the outdoor unit 7 can normally operate, that is, the first preset temperature is reasonably set according to each electronic component of the outdoor unit 7.
Generally, when the ambient temperature in the electronic control box 2 is low, if the compressor 6 is directly turned on, the operating state of each electronic component of the outdoor unit 7 may be unstable, and the operating characteristics of each electronic component may be affected, thereby affecting the performance and the service life of the air conditioner.
In this embodiment, when the obtained ambient temperature is lower than the first preset temperature, the first control module 20 controls the refrigerant pump 4 to start up to operate, so that the refrigerant of the refrigerant pipe 3 flows through the refrigerant circuit 1, and the refrigerant flows through the refrigerant pipe 3 of the refrigerant circuit 1 located in the electronic control box 2, so that the refrigerant with higher temperature of the indoor unit 8 quickly flows through the refrigerant pipe 3 of the refrigerant circuit 1 located in the electronic control box 2, and then heats the electronic control box 2, wherein when the temperature of the electronic control box 2 is lower, for example, lower than 20 ℃, the temperature of the refrigerant pipe 3 of the indoor unit 8 is far higher than the temperature of the electronic control box 2 due to better sealing performance, heating and the like of the corresponding indoor environment, and thus the above manner can be adopted for heating the electronic control box 2.
It should be emphasized that, in order to improve the efficiency and speed of temperature rise in the electronic control box 2 when the refrigerant is used for heating, the outer wall of the box body and the inner wall of the box body of the electronic control box 2 are provided with heat insulation materials to reduce the loss of heat in the electronic control box 2, and preferably, the electronic control box 2 is a sealed electronic control box 2.
According to the temperature control device of the electric control box provided by the embodiment, when the outdoor unit is powered on, the first acquisition module 10 acquires the ambient temperature in the electric control box, then when the acquired ambient temperature is lower than a first preset temperature, the first control module 20 controls the refrigerant pump to start running, the refrigerant of the refrigerant pipe 3 flows through the refrigerant loop 1 by starting the refrigerant pump 4, and then the part of the refrigerant with higher temperature, which is located in the electric control box 2, rapidly flows through the refrigerant loop 1 is heated by the electric control box 2, so that the influence on the performance of the air conditioner caused by the long-time running of the electric control box 2 under the condition of lower temperature is avoided, and the service life of the air conditioner is prolonged.
Referring to fig. 7, in the present embodiment, an electronic expansion valve 5 in signal connection with the main control board is further disposed in the refrigerant loop 1, and the electronic expansion valve 5 is disposed in parallel with the refrigerant pump 4. The temperature control device of the electric control box further comprises:
the second obtaining module 30 is configured to obtain the ambient temperature in the electric control box in real time when the refrigerant pump operates;
in this embodiment, after the refrigerant pump 4 is turned on, the refrigerant pump 4 makes the refrigerant with a higher temperature flow through the portion of the refrigerant circuit 1 located in the electronic control box 2, so as to gradually raise the ambient temperature in the electronic control box 2, and when the refrigerant pump 4 is operated, the second obtaining module 30 obtains the ambient temperature in the electronic control box 2 in real time, so as to determine whether the current ambient temperature meets the condition of turning on the compressor 6.
The second control module 40 is configured to control the refrigerant pump to stop operating and control the compressor to start operating when the obtained ambient temperature is greater than a second preset temperature, where the second preset temperature is greater than the first preset temperature;
the second preset temperature is a temperature at which the compressor 6 can normally operate, and the second preset temperature is greater than the first preset temperature.
In this embodiment, when the obtained ambient temperature is greater than a second preset temperature, the second control module 40 controls the refrigerant pump 4 to stop operating, and controls the compressor 6 to start operating, so as to adjust the indoor ambient temperature corresponding to the air conditioner.
And a third control module 50 for controlling the electronic expansion valve to open.
In this embodiment, after the compressor 6 is turned on, the refrigerant in the air-conditioning refrigerant pipe 3 continuously flows to exchange the indoor environment and the outdoor environment, so as to increase the ambient temperature in the electronic control box 2. When the temperature in the electric control box rises to ensure that the compressor normally operates, the second control module 40 controls the compressor to start to operate, and meanwhile, in order to avoid overhigh ambient temperature in the electric control box 2, the flow and the flow rate of the refrigerant flowing through the refrigerant loop 1 need to be reduced, the second control module 40 controls the refrigerant pump 4 to stop operating and the electronic expansion valve 5 to be opened through the third control module 50, so that the refrigerant in the air-conditioning refrigerant pipe 3 can continuously flow through the part of the refrigerant loop 1, which is positioned in the electric control box 2, by opening the electronic expansion valve 5, the electric control box 2 can maintain the current temperature, or the temperature of the electric control box 2 is maintained in a reasonable temperature range, the electric control box 2 can stably operate, the phenomenon that the performance of the air conditioner is influenced when the electric control box 2 operates at a low temperature is avoided, and the service life of the air conditioner is prolonged. It is easy to understand that, compared with the refrigerant pump 4, the electronic expansion valve 5 is used to control the flow rate and the flow velocity of the refrigerant flowing through the refrigerant circuit 1, so that the flow rate of the refrigerant flowing through the refrigerant circuit 1 can be reduced, the speed of adjusting the indoor environment temperature can be increased, and the performance of the air conditioner can be improved.
According to the temperature control device of the electronic control box provided by the embodiment, when the refrigerant pump operates, the second acquisition module 30 acquires the ambient temperature in the electronic control box in real time, then when the acquired ambient temperature is higher than the second preset temperature, the second control module 40 controls the refrigerant pump to stop operating and controls the compressor to start operating, and then the third control module 50 controls the electronic expansion valve to open, so that the compressor 6 is controlled to start operating and the electronic expansion valve is opened when the ambient temperature in the electronic control box 2 is higher than the second preset temperature, and the refrigerant flowing through the refrigerant loop 1 is controlled by the electronic expansion valve when the temperature of the corresponding indoor environment is adjusted, so that the temperature of the electronic control box 2 is maintained within a reasonable temperature range.
A third embodiment of the temperature control device of an electronic control box according to the present invention is proposed based on the second embodiment, and referring to fig. 8, in this embodiment, the temperature control device of an electronic control box further includes:
a third obtaining module 60, configured to obtain an ambient temperature in the electronic control box in real time after the electronic expansion valve is opened;
in this embodiment, after the electronic expansion valve 5 is opened, the third obtaining module 60 obtains the ambient temperature in the electronic control box 2 in real time, so as to adjust the opening of the electronic expansion valve 5 according to the ambient temperature, and further adjust the flow rate and the flow velocity of the refrigerant flowing through the electronic control box 2, so that the ambient temperature in the electronic control box 2 is maintained within the drinking range.
And an adjusting module 70, configured to adjust an opening degree of the electronic expansion valve based on the obtained ambient temperature.
In this embodiment, different temperature ranges may be set, each temperature range corresponds to a different opening degree of the electronic expansion valve 5, a temperature range with a lower temperature value corresponds to a larger opening degree of the electronic expansion valve 5, and a temperature range with a higher temperature value corresponds to a smaller opening degree of the electronic expansion valve 5.
In this embodiment, when the ambient temperature in the electronic control box 2 is obtained, the adjusting module 70 adjusts the opening degree of the electronic expansion valve 5 based on the ambient temperature, and further controls the flow rate and the flow velocity of the refrigerant flowing through the refrigerant circuit 1, so that the electronic control box 2 maintains the current temperature, or the temperature of the electronic control box 2 is maintained within a reasonable temperature range, and the electronic control box 2 can stably operate. Specifically, when different temperature ranges are currently set and the opening degrees of the electronic expansion valves 5 corresponding to the temperature ranges are different, if the ambient temperature in the electronic control box 2 is obtained, the temperature range to which the ambient temperature belongs is determined, the opening degree of the electronic expansion valve 5 corresponding to the temperature range to which the ambient temperature belongs is obtained, and then the adjusting module 70 adjusts the opening degree of the electronic expansion valve 5 to the opening degree of the electronic expansion valve 5 corresponding to the temperature range to which the ambient temperature belongs.
According to the temperature control device of the electronic control box provided by the embodiment, after the electronic expansion valve is opened, the third obtaining module 60 obtains the ambient temperature in the electronic control box in real time, and then the adjusting module 70 adjusts the opening degree of the electronic expansion valve based on the obtained ambient temperature, so that the adjustment of the opening degree of the electronic expansion valve 5 according to the ambient temperature is realized, and further, the flow rate and the flow speed of the refrigerant flowing through the refrigerant loop 1 are controlled, so that the ambient temperature in the electronic control box 2 is maintained within a reasonable temperature range, and further, the electronic control box 2 is prevented from running again under the condition of low temperature.
A fourth embodiment of the temperature control device of an electronic control box according to the present invention is proposed based on the second embodiment, and referring to fig. 9, in this embodiment, the temperature control device of an electronic control box further includes:
a fourth obtaining module 80, configured to obtain an indoor environment temperature corresponding to the outdoor unit;
and the fourth control module 90 is configured to control the refrigerant pump to start up and operate and control the compressor to stop operating when the indoor environment temperature reaches the set temperature of the air conditioner.
In this embodiment, after the compressor 6 is turned on, the air conditioner starts to adjust the indoor ambient temperature, and the air conditioner transfers the indoor heat to the outdoor through the refrigerant pipe 3, at this time, the temperature of the refrigerant in the refrigerant pipe 3 located outdoors is high. When the indoor environment temperature reaches the set temperature of the air conditioner, the compressor 6 is controlled to stop running, the refrigerant in the air conditioner refrigerant pipe 3 does not flow, if the environment temperature in the electronic control box 2 needs to be maintained through refrigerant heat exchange, the refrigerant pump 4 needs to be started again, namely, the refrigerant pump 4 is controlled to start running, namely, the refrigerant in the refrigerant pipe 3 flows through the refrigerant loop 1 through the power of the refrigerant pump 4. It is easy to understand that the electronic expansion valve 5 can be closed at the same time when the refrigerant pump 4 is turned on.
According to the temperature control device of the electronic control box provided by the embodiment, the fourth acquisition module 80 acquires the indoor environment temperature corresponding to the outdoor unit, and then when the indoor environment temperature reaches the set temperature of the air conditioner, the fourth control module 90 controls the refrigerant pump to start up and operate and controls the compressor to stop operating, so that the refrigerant pump 4 is started again when the indoor environment temperature reaches the set temperature of the air conditioner, the refrigerant of the refrigerant pipe 3 flows through the refrigerant loop 1 through the power of the refrigerant pump 4, the environment temperature in the electronic control box 2 is maintained in a reasonable temperature range, and the electronic control box 2 is prevented from operating again under the condition of low temperature.
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 outdoor unit applied to an air conditioner is characterized by comprising an electric control box and a refrigerant loop; the refrigerant loop flows through the interior of the electric control box and is communicated with a refrigerant pipe of the air conditioner, a refrigerant pump is arranged in the refrigerant loop, and the refrigerant pump is in signal connection with a main control board of the electric control box;
an electronic expansion valve in signal connection with the main control board is further arranged in the refrigerant loop, and the electronic expansion valve is connected with the refrigerant pump in parallel;
when the environment temperature of the electric control box is lower than a first preset temperature, the main control board controls the refrigerant pump to start up to run so that the refrigerant of the refrigerant pipe flows through the refrigerant loop, and the refrigerant with higher temperature of the indoor unit quickly flows through the refrigerant pipe of the refrigerant loop in the electric control box so as to heat the electric control box;
and heat insulation materials are arranged on the outer wall of the box body and the inner wall of the box body of the electric control box.
2. The temperature control method of the electric control box is applied to an outdoor unit of an air conditioner, and is characterized in that the outdoor unit is provided with a refrigerant loop, the refrigerant loop flows through the inside of the electric control box and is communicated with a refrigerant pipe of the air conditioner, a refrigerant pump is arranged in the refrigerant loop, an electronic expansion valve is further arranged in the refrigerant loop, the electronic expansion valve is connected with the refrigerant pump in parallel, and the temperature control method of the electric control box comprises the following steps:
when the outdoor unit is powered on, acquiring the ambient temperature in the electric control box;
when the obtained environment temperature is lower than a first preset temperature, the refrigerant pump is controlled to start to operate, so that the refrigerant of the refrigerant pipe flows through the refrigerant loop, the refrigerant flows through the refrigerant pipe of the refrigerant loop in the electric control box, the refrigerant with higher temperature of the indoor unit quickly flows through the refrigerant pipe of the refrigerant loop in the electric control box, and the electric control box is heated, wherein heat insulation materials are arranged on the outer wall of the box body and the inner wall of the box body of the electric control box.
3. The method according to claim 2, wherein an electronic expansion valve is further disposed in the refrigerant circuit, the electronic expansion valve is disposed in parallel with the refrigerant pump, and after the step of controlling the refrigerant pump to start, the method further comprises:
when the refrigerant pump runs, acquiring the ambient temperature in the electric control box in real time;
when the obtained environment temperature is higher than a second preset temperature, controlling the refrigerant pump to stop running and controlling the compressor to start running, wherein the second preset temperature is higher than the first preset temperature;
and controlling the opening of the electronic expansion valve.
4. The method of controlling a temperature of an electronic control box according to claim 2, wherein after the step of controlling the opening of the electronic expansion valve, the method of controlling a temperature of an electronic control box further comprises:
after the electronic expansion valve is opened, acquiring the ambient temperature in the electronic control box in real time;
and adjusting the opening degree of the electronic expansion valve based on the acquired environment temperature.
5. The method as claimed in claim 3 or 4, wherein after the step of controlling the refrigerant pump to stop operating and the compressor to start operating, the method further comprises:
acquiring the indoor environment temperature corresponding to the outdoor unit;
and when the indoor environment temperature reaches the set temperature of the air conditioner, controlling the refrigerant pump to start and operate, and controlling the compressor to stop operating.
6. The utility model provides a temperature control device of automatically controlled box, is applied to the off-premises station of air conditioner, its characterized in that, the off-premises station is equipped with the refrigerant return circuit, the refrigerant return circuit flow through the inside of automatically controlled box, with the refrigerant pipe intercommunication of air conditioner, be equipped with the refrigerant pump in the refrigerant return circuit, the temperature control device of automatically controlled box includes:
the first acquisition module is used for acquiring the ambient temperature in the electric control box when the outdoor unit is powered on;
the first control module is used for controlling the refrigerant pump to start up to operate when the obtained environment temperature is lower than a first preset temperature, so that a refrigerant of a refrigerant pipe flows through a refrigerant loop, the refrigerant flows through the refrigerant pipe of the refrigerant loop in the electric control box, the refrigerant with higher temperature of the indoor unit quickly flows through the refrigerant pipe of the refrigerant loop in the electric control box, and the electric control box is heated, wherein heat insulation materials are arranged on the outer wall of the box body and the inner wall of the box body of the electric control box;
an electronic expansion valve is further arranged in the refrigerant loop and is connected with the refrigerant pump in parallel.
7. The apparatus as claimed in claim 6, wherein an electronic expansion valve is further disposed in the refrigerant circuit, the electronic expansion valve is connected in parallel with the refrigerant pump, and the apparatus further comprises:
the second acquisition module is used for acquiring the ambient temperature in the electric control box in real time when the refrigerant pump runs;
the second control module is used for controlling the refrigerant pump to stop running and controlling the compressor to start running when the obtained ambient temperature is higher than a second preset temperature, wherein the second preset temperature is higher than the first preset temperature;
and the third control module is used for controlling the opening of the electronic expansion valve.
8. The temperature control apparatus of an electric control box according to claim 7, further comprising:
the third acquisition module is used for acquiring the ambient temperature in the electronic control box in real time after the electronic expansion valve is opened;
and the adjusting module is used for adjusting the opening degree of the electronic expansion valve based on the acquired environment temperature.
9. The temperature control apparatus of an electric control box according to claim 7 or 8, further comprising:
the fourth acquisition module is used for acquiring the indoor environment temperature corresponding to the outdoor unit;
and the fourth control module is used for controlling the refrigerant pump to start up and operate and controlling the compressor to stop operating when the indoor environment temperature reaches the set temperature of the air conditioner.
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| CN201611059896.6A CN106556079B (en) | 2016-11-24 | 2016-11-24 | Outdoor unit, and temperature control method and device of electric control box |
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| CN201611059896.6A CN106556079B (en) | 2016-11-24 | 2016-11-24 | Outdoor unit, and temperature control method and device of electric control box |
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| CN107192104A (en) * | 2017-06-13 | 2017-09-22 | 珠海格力电器股份有限公司 | Air conditioner electrical box control device, air conditioning control method and device |
| CN111006373B (en) * | 2019-12-09 | 2021-05-04 | 珠海格力电器股份有限公司 | Electric cabinet and control method thereof |
| CN111503758B (en) * | 2020-05-12 | 2024-03-22 | 珠海格力电器股份有限公司 | Electrical box with high heat exchange efficiency, air conditioner and control method of air conditioner |
| CN114110737A (en) * | 2020-08-27 | 2022-03-01 | 广东美的暖通设备有限公司 | Outdoor unit, control method and system thereof, air conditioner and storage medium |
| CN115031396A (en) * | 2022-06-28 | 2022-09-09 | 广东美的制冷设备有限公司 | Outdoor unit control method and device of air conditioning system, outdoor unit and air conditioning system |
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