CN115218294A - Chip cooling control method for air conditioner - Google Patents

Chip cooling control method for air conditioner Download PDF

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Publication number
CN115218294A
CN115218294A CN202210772760.9A CN202210772760A CN115218294A CN 115218294 A CN115218294 A CN 115218294A CN 202210772760 A CN202210772760 A CN 202210772760A CN 115218294 A CN115218294 A CN 115218294A
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China
Prior art keywords
chip
temperature
air conditioner
control method
cooling control
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Pending
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CN202210772760.9A
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Chinese (zh)
Inventor
徐军瑞
姜全超
杨中锋
陈安江
宁贻江
吴亚孟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qingdao Haier Air Conditioner Gen Corp Ltd
Qingdao Haier Air Conditioning Electric Co Ltd
Haier Smart Home Co Ltd
Original Assignee
Qingdao Haier Air Conditioner Gen Corp Ltd
Qingdao Haier Air Conditioning Electric Co Ltd
Haier Smart Home Co Ltd
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Application filed by Qingdao Haier Air Conditioner Gen Corp Ltd, Qingdao Haier Air Conditioning Electric Co Ltd, Haier Smart Home Co Ltd filed Critical Qingdao Haier Air Conditioner Gen Corp Ltd
Priority to CN202210772760.9A priority Critical patent/CN115218294A/en
Publication of CN115218294A publication Critical patent/CN115218294A/en
Pending legal-status Critical Current

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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
    • F24F1/24—Cooling of electric components
    • 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
    • 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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • F25B49/022—Compressor control arrangements
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/20—Cooling means
    • 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)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Signal Processing (AREA)
  • Theoretical Computer Science (AREA)
  • Fuzzy Systems (AREA)
  • Human Computer Interaction (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The invention relates to a chip cooling control method for an air conditioner. The air conditioner is provided with an air conditioner outdoor unit, the air conditioner outdoor unit is provided with a computer board on which the chip is positioned, a radiating fin connected with the computer board and a radiating fan capable of radiating heat of the radiating fin, and the chip cooling control method comprises the following steps: detecting an external ambient temperature Tw; determining an initial rotation speed of the heat dissipation fan based on the external environment temperature Tw; judging whether the external environment temperature Tw is greater than or equal to an external environment temperature threshold Tws; detecting a chip temperature Td when the external environment temperature Tw is greater than or equal to the external environment temperature threshold Tws; and judging whether to increase the rotating speed of the cooling fan or not based on the chip temperature Td. This air conditioner is through setting up independent radiator fan and adopting corresponding chip cooling control method, can cool down computer board and chip more effectively to ensure the good operating mode of compressor work, promote air conditioner temperature regulation's effect, and then promote user experience.

Description

Chip cooling control method for air conditioner
Technical Field
The invention relates to the technical field of air conditioners, in particular to a chip cooling control method for an air conditioner.
Background
Air conditioners are household appliances which are essential to people in life nowadays. The air conditioner mainly comprises a refrigerating system, an air path system, an electric appliance system, a box body, a panel and the like. The user can use the air conditioner to adjust and control parameters such as temperature, humidity, flow rate and the like of the ambient air in the building or the structure, so that a more comfortable living environment is provided for people.
An air conditioner includes an outdoor unit and an indoor unit. The outdoor unit of the air conditioner is generally provided with a computer board for controlling operations of various components of the air conditioner. In the operation process of air conditioner, the computer board can produce a large amount of heats to make the chip on the computer board high temperature, and then lead to compressor frequency reduction and shut down scheduling problem, the ability of the regulation temperature of restriction air conditioner when the computer board is in the high temperature state influences user experience. Therefore, the heat dissipation fins are usually connected to the computer board, and the heat of the computer board is taken away by the air flowing between the heat dissipation fins by guiding the airflow generated by the external fan to the heat dissipation fins, so that the purpose of cooling the computer board and the chip is achieved.
However, the external fan is used for inducing air to dissipate heat, so that on one hand, the induced air volume is small, and the heat dissipation effect is poor; on the other hand, when the air conditioner is in a cooling state, the air flow generated by the external fan is heated by the condenser, which may affect the heat dissipation effect of the heat sink, and even may cause the computer board to be overheated, which may trigger the shutdown protection of the compressor. Further, it is difficult to control the amount and speed of the wind from the external fan guided to the heat sink.
Therefore, there is a need in the art for a new solution to the above-mentioned problems.
Disclosure of Invention
In order to solve the above problems in the prior art, that is, to solve the technical problems in the prior art that the effect of cooling a computer board chip by guiding the air flow generated by the outdoor unit of the air conditioner to the heat sink is poor and the air volume and the air speed are difficult to control, the invention provides a chip cooling control method for an air conditioner. The air conditioner is provided with an air conditioner external unit, the air conditioner external unit is provided with a computer board on which the chip is positioned, a radiating fin connected with the computer board and a radiating fan capable of radiating the radiating fin, and the chip cooling control method comprises the following steps:
detecting an external ambient temperature Tw;
determining an initial rotation speed of the heat dissipation fan based on the external environment temperature Tw;
judging whether the external environment temperature Tw is greater than or equal to an external environment temperature threshold Tws;
detecting a chip temperature Td when the external environment temperature Tw is greater than or equal to the external environment temperature threshold Tws;
and judging whether to increase the rotation speed of the cooling fan or not based on the chip temperature Td.
The air conditioner of the invention can assist the radiating fins of the computer board to radiate heat by arranging the independent radiating fan on the outdoor unit, thereby effectively reducing the temperature of the computer board and the chip. By adopting the control method, the air conditioner can judge whether to adjust the rotating speed of the cooling fan according to the external environment temperature and adjust the rotating speed of the cooling fan according to the chip temperature, so that the computer board and the chip are cooled more effectively in a high-temperature state, the good working condition of the compressor is further ensured, and the temperature adjusting effect of the air conditioner is improved so as to improve the use experience of users.
In a preferred technical solution of the above chip cooling control method for an air conditioner, the chip cooling control method includes:
judging whether the chip temperature Td is greater than or equal to a first preset temperature Ta;
and when the temperature Td of the chip is greater than or equal to the first preset temperature Ta, the rotating speed of the cooling fan is increased.
Through the arrangement, when the temperature of the chip is higher, namely when the temperature of the chip is higher than the first preset temperature Ta, the rotating speed of the cooling fan is increased, so that the cooling capacity of the cooling fins can be enhanced, the cooling of the computer board and the chip is promoted, and the normal operation of the outdoor unit is ensured.
In an optimal technical solution of the above chip cooling control method for an air conditioner, the chip cooling control method further includes: and when the chip temperature Td is greater than or equal to the first preset temperature, the running frequency of a compressor of the air conditioner is increased.
Through foretell setting, when the chip temperature is than higher, owing to improved radiator fan's rotational speed can promote computer board and chip cooling, so can promote certain compressor operating frequency on this basis to make the compressor keep good operating mode operation, thereby promote air conditioner temperature regulation's effect.
In a preferred technical solution of the above chip cooling control method for an air conditioner, the chip cooling control method includes:
detecting the chip temperature Td again after the compressor running frequency of the air conditioner is increased;
judging whether the re-measured chip temperature Td is greater than or equal to a second preset temperature Tb, wherein the second preset temperature Tb is greater than the first preset temperature Ta;
and when the re-measured chip temperature Td is less than the second preset temperature Tb, maintaining the current rotating speed of the cooling fan and the current running frequency of the compressor.
Through foretell setting, when the chip temperature is higher than first preset temperature and is less than the second when presetting the temperature, the chip is in suitable operating temperature interval, maintains radiator fan's current rotational speed and the operating frequency of compressor this moment and is favorable to guaranteeing that the compressor maintains good operating mode, and then guarantees the effect of air conditioner regulation temperature.
In a preferred technical solution of the above chip cooling control method for an air conditioner, the chip cooling control method includes:
when the re-measured chip temperature Td is greater than or equal to the second preset temperature Tb, judging whether the re-measured chip temperature is greater than a third preset temperature Tc, wherein the third preset temperature Tc is greater than the second preset temperature Tb;
and when the newly measured chip temperature Td is greater than the third preset temperature Tc, controlling the compressor to stop.
Through the arrangement, when the temperature of the chip is too high, namely when the temperature of the chip is greater than the third preset temperature, the compressor is triggered to stop to protect, and the machine can be prevented from being damaged.
In a preferred technical solution of the above chip cooling control method for an air conditioner, the chip cooling control method includes:
and when the newly measured chip temperature Td is less than the third preset temperature Tc, increasing the rotating speed of the cooling fan and reducing the running frequency of the compressor.
Through foretell setting, when the chip temperature is in the second and predetermines the temperature with the third between predetermineeing the temperature, the chip temperature is higher, promotes radiator fan's rotational speed and is favorable to strengthening the heat-sinking capability of fin effectively, reduces the compressor operating frequency and can further reduce the temperature of computer board and chip, and then guarantees the normal work of compressor.
In a preferred technical solution of the above method for controlling the temperature of the chip for an air conditioner, when the chip temperature Td is less than the first preset temperature Ta, the operating frequency of the compressor of the air conditioner is increased, and the current rotation speed of the cooling fan is maintained. Through foretell setting, when the chip temperature is lower, when the chip temperature is less than first predetermined temperature promptly, promote the compressor operating frequency and be favorable to strengthening the effect of air conditioner temperature regulation, and then promote user's use and experience.
In an optimal technical solution of the above chip cooling control method for an air conditioner, the chip cooling control method further includes:
maintaining the initial rotation speed of the cooling fan when the external environment temperature Tw is less than the external environment temperature threshold Tws.
Through the arrangement, the air conditioner can control the rotating speed of the cooling fan according to the external environment temperature, so that the computer board and the chip are cooled according to actual conditions, and the intelligent and reasonable cooling is realized.
In the preferable technical scheme of the chip cooling control method for the air conditioner, the rotating speed of the cooling fan is increased by the speed increase of 50 r/min. Through foretell setting, can strengthen radiator fan's amount of wind and wind speed to a certain extent to effectively reduce the temperature of computer board and chip, and then be favorable to the compressor to keep good operating mode operation.
In the preferable technical scheme of the chip cooling control method for the air conditioner, the initial rotating speed is 1000-2000r/min. Through foretell setting, radiator fan can take away the heat on the fin effectively to be favorable to reducing the temperature of computer board and chip.
Drawings
Preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:
FIG. 1 is a flow chart of a chip cooling control method for an air conditioner according to the present invention;
fig. 2 is a flowchart of an embodiment of a chip cooling control method for an air conditioner according to the present invention.
Detailed Description
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention.
It should be noted that the terms "first", "second" and "third" in the description of the present invention are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; either directly or indirectly through intervening media, or through the communication between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The invention provides a chip cooling control method for an air conditioner, which aims to solve the technical problems that in the prior art, the effect of cooling a computer board chip by guiding airflow generated by an air conditioner outdoor unit to a radiating fin is poor, and the air volume and the air speed are difficult to control. The air conditioner provided by the invention is provided with an air conditioner external unit, the air conditioner external unit is provided with a computer board on which a chip is positioned, a radiating fin connected with the computer board and a radiating fan capable of radiating the radiating fin, and the chip cooling control method comprises the following steps:
detecting an external ambient temperature Tw (step S1);
determining an initial rotation speed of the heat dissipation fan based on the external ambient temperature Tw (step S2);
judging whether the external environment temperature Tw is greater than or equal to an external environment temperature threshold Tws (step S3);
detecting a chip temperature Td when the external environment temperature Tw is greater than or equal to an external environment temperature threshold Tws (step S4);
whether to increase the rotation speed of the heat radiation fan is judged based on the chip temperature Td (step S5).
In one or more embodiments, the air conditioner of the present invention has an outdoor unit of the air conditioner. The outdoor unit of the air conditioner includes, but is not limited to, an electronic control cabinet, a computer board, a heat sink and a heat dissipation fan. The computer board is arranged in the electric control cabinet and connected with the radiating fins, so that the radiating fins can take away heat generated by the computer board. And a cooling fan is also arranged on the electric control cabinet. The heat dissipation fan is an axial fan and is configured to drive air to flow through the heat dissipation fins and take away heat of the heat dissipation fins, so that the purpose of heat dissipation of the heat dissipation fins is achieved, and the purpose of cooling the computer board and the chips on the computer board is achieved. In alternative embodiments, the heat dissipation fan may also be a centrifugal fan, a mixed flow fan, or any other suitable type of fan, as long as the heat dissipation fan can assist the heat dissipation plate to dissipate heat so as to reduce the temperature of the computer board and the chip.
Fig. 1 is a flowchart of a chip cooling control method for an air conditioner according to the present invention. As shown in fig. 1, in one or more embodiments, after the chip temperature reduction control method for an air conditioner according to the present invention is started, first, step S1 is performed, i.e., an external environment temperature Tw is detected. An external environment temperature sensor is arranged on the electric cabinet and is configured to be in communication connection with a control system of the electric cabinet so as to transmit a measured temperature signal to the control system in time. Then, step S2 is performed, i.e., the initial rotation speed of the cooling fan is determined based on the external ambient temperature Tw. The rotation speed of the corresponding cooling fan is different according to the difference of the external environment temperature Tw. It is understood that the higher the external ambient temperature Tw, the higher the corresponding rotational speed of the radiator fan. In one or more embodiments, the initial rotational speed of the cooling fan is 1000-2000r/min. In an alternative embodiment, the initial rotation speed of the cooling fan may also be other suitable values, and may be flexibly set according to actual requirements, as long as it is ensured that the cooling fan can effectively take away heat from the cooling fins, thereby promoting the temperature reduction of the computer board and the chip. Simultaneously or subsequently, step S3 is executed to determine whether the external ambient temperature Tw is greater than or equal to the external ambient temperature threshold Tws. In one or more embodiments, the external ambient temperature threshold Tws is 45 degrees celsius. In alternative embodiments, the external ambient temperature threshold Tws may also be other suitable values, and may be flexibly set according to actual requirements. Then, the chip temperature reduction control method proceeds to step S4, i.e., detects the chip temperature Td when the external ambient temperature Tw is equal to or greater than the external ambient temperature threshold value Tws. Step S5 is executed again, i.e. it is determined whether to increase the rotation speed of the cooling fan based on the chip temperature Td. When the temperature of the external environment is too high, the air conditioner can adjust the rotating speed of the cooling fan according to the temperature of the chip, so that the computer board and the chip are cooled more effectively, the compressor is guaranteed to operate under a good working condition, the temperature adjusting effect of the air conditioner is further guaranteed, and the use experience of a user is favorably improved. After step S5 is executed, the chip cooling control method is ended.
Fig. 2 is a flowchart of an embodiment of a chip cooling control method for an air conditioner according to the present invention. As shown in fig. 2, in one or more embodiments, after the chip temperature reduction control method for an air conditioner according to the present invention is started, first, step S1 is performed, i.e., the external environment temperature Tw is detected. The electric cabinet is provided with an external environment temperature sensor which is configured to be in communication connection with a control system of the electric cabinet so as to transmit a measured temperature signal to the control system in time. Then, step S2 is performed, i.e., the initial rotation speed of the heat dissipation fan is determined based on the external ambient temperature Tw. The rotation speed of the corresponding cooling fan is different according to the difference of the external environment temperature Tw. It is understood that the higher the external ambient temperature Tw, the higher the corresponding rotational speed of the radiator fan. In one or more embodiments, the initial rotational speed of the cooling fan is 1000-2000r/min. In an alternative embodiment, the initial rotation speed of the cooling fan may also be other suitable values, and may be flexibly set according to actual requirements, as long as it is ensured that the cooling fan can effectively take away heat from the cooling fins, thereby promoting the temperature reduction of the computer board and the chip. Concurrently or subsequently, step S31 is executed to determine whether the external environment temperature Tw is equal to or greater than the external environment temperature threshold value Tws. In one or more embodiments, the external ambient temperature threshold Tws is 45 degrees celsius. In alternative embodiments, the external ambient temperature threshold Tws may also be other suitable values, and may be flexibly set according to actual requirements. When the external ambient temperature Tw is lower than 45 degrees celsius, i.e., when the determination result of step S31 is no, step S32 is performed, i.e., the initial rotation speed of the heat dissipation fan is maintained. After step S32 is performed, the control method ends.
When the determination result in step S31 is yes, that is, when the external ambient temperature Tw is higher than 45 degrees celsius, it indicates that the outdoor unit of the air conditioner is operating at a high ambient temperature, step S41 is performed, that is, the chip temperature Td is detected. At one or more ofIn the embodiment, a chip temperature sensor is further arranged in the electronic control cabinet. The chip temperature sensor can monitor the chip temperature Td in real time and is configured to be in communication connection with the control system so as to transmit the measured temperature signal to the control system in time. Then, step S51 is executed to determine whether the chip temperature Td is greater than or equal to the first preset temperature Ta. In one or more embodiments, the first predetermined temperature Ta is 90 degrees celsius. In alternative embodiments, the first preset temperature Ta may also be any other suitable value, and may be flexibly set according to actual requirements. When the chip temperature Td is less than 90 degrees celsius, that is, when the determination of step S51 is no, step S52 is performed, that is, the compressor operation frequency H is increased, and the current rotation speed of the cooling fan is maintained. It is easy to think that when the temperature of the chip is lower than the first preset temperature Ta, which indicates that the temperature of the chip has not reached a relatively high state, the operating frequency H of the compressor can be increased to a certain extent, so as to improve the temperature adjusting effect of the air conditioner. Specifically, the boosted compressor operating frequency H may be according to the formula: h = H 0 + m (Ta-Td) is calculated. Wherein H 0 For the compressor operating frequency before boosting, m is a frequency boosting factor greater than 0.1 and less than 1. In alternative embodiments, m may be other suitable values. It should be noted that, in the chip temperature reduction control method of the present invention, when the compressor operating frequency H calculated according to the formula is greater than the maximum operating frequency Hmax allowed by the compressor, the chip temperature reduction control method is operated according to the maximum operating frequency Hmax allowed by the compressor by default. After the compressor operating frequency is raised, it is determined whether the compressor operating frequency H at this time is equal to or higher than the maximum allowable compressor operating frequency Hmax, step S54. If no, the process returns to step S41 to continue detecting the chip temperature Td. When the judgment result of the step S54 is yes, that is, when the operation frequency of the compressor has reached the maximum operation frequency Hmax allowed by the compressor, the compressor is operated at the allowable z-maximum operation frequency Hmax thereof, and a step S42 of detecting the chip temperature Td again is performed.
With continued reference to fig. 2, when the determination of step S51 is yes, i.e. when the chip temperature Td is higher than 90 degrees celsius, step S53 of increasing the rotation speed of the heat dissipation fan is performedAnd the operating frequency H of the compressor is raised. When the chip temperature Td is higher than the first preset temperature Ta, which indicates that the chip temperature has reached a higher state, the rotation speed of the cooling fan can be increased. In one or more embodiments, the chip cooling control method of the invention increases the rotation speed of the cooling fan by an increase of 50 r/min. In alternative embodiments, the rotation speed of the cooling fan may be increased according to any other suitable increasing speed, for example, 100 r/min. It should be noted that, in the chip temperature reduction control method of the present invention, when the rotating speed of the accelerated cooling fan exceeds the maximum rotating speed allowed for the operation of the cooling fan, the cooling fan is operated at the maximum rotating speed allowed for the operation by default. The rotating speed of the cooling fan is increased, and meanwhile, the running frequency H of the compressor can be properly increased, so that the temperature adjusting effect of the air conditioner is improved. Specifically, the boosted compressor operating frequency H may be according to the formula: h = H 0 + p (Tb-Ta) is calculated. Wherein H 0 For the compressor operating frequency before boosting, p is a frequency boosting factor greater than 0.1 and less than 1. In alternative embodiments, p may be other suitable values. It should be noted that, in the chip temperature reduction control method of the present invention, when the compressor operating frequency H calculated according to the formula is greater than the maximum operating frequency Hmax allowed by the compressor, the chip temperature reduction control method is operated according to the maximum operating frequency Hmax allowed by the compressor by default. In an alternative embodiment, only the rotational speed of the cooling fan may be increased, and the operation power of the compressor may not be increased. After step S53 is performed, step S42 is performed, i.e. the chip temperature Td is detected again.
As shown in fig. 2, after step S42 is completed, step S55 is performed to determine whether the newly measured chip temperature Td is equal to or higher than the second preset temperature Tb. It should be noted that the second preset temperature Tb is greater than the first preset temperature Ta. In one or more embodiments, the second preset temperature Tb is 95 degrees celsius. In alternative embodiments, the second preset temperature Tb may also be another suitable value, and may be flexibly set according to actual requirements. When the re-measured chip temperature Td is less than the second preset temperature Tb, which indicates that the chip is at a more appropriate operating temperature, step S56 is executed, i.e. the current rotation speed of the cooling fan and the current compressor operating frequency are maintained. Then, step S61 is performed, i.e., whether or not to stop the engine is determined. When the judgment is no, the process returns to step S41, where the chip temperature Td is detected. And if so, stopping the compressor, and ending the chip cooling control method.
When the re-measured chip temperature Td is equal to or greater than the second preset temperature Tb, that is, when the determination result of step S55 is yes, step S57 is performed, that is, it is determined whether the re-measured chip temperature Td is equal to or greater than the third preset temperature Tc. It is noted that the third preset temperature Tc is greater than the second preset temperature Tb. In one or more embodiments, the third predetermined temperature Tc is 100 degrees celsius. In alternative embodiments, the third preset temperature Tc may be any other suitable value, and may be flexibly set according to actual requirements. When the determination result in the step S57 is negative, it indicates that the re-measured chip temperature is between 95 ℃ and 100 ℃, that is, the chip is already in a high temperature state, and at this time, the heat dissipation strength to the computer board and the chip needs to be enhanced. Therefore, step S58 is performed, i.e., the rotation speed of the fan is increased and the compressor operation frequency is decreased. In one or more embodiments, the chip cooling control method of the invention increases the rotation speed of the cooling fan by an increase of 50 r/min. In alternative embodiments, the rotation speed of the cooling fan may be increased according to any other suitable increasing speed, for example, 100 r/min. It should be noted that, in the chip temperature reduction control method of the present invention, when the rotating speed of the accelerated cooling fan exceeds the maximum rotating speed allowed for the operation of the cooling fan, the cooling fan is operated at the maximum rotating speed allowed for the operation by default. The rotating speed of the cooling fan is increased, and meanwhile, the operating frequency H of the compressor is properly reduced, so that the normal operation of the compressor is ensured, and the shutdown protection is avoided. Specifically, the running frequency H of the compressor after frequency reduction can be according to the formula: h = H 0 -n (Td-Ta) is calculated. Wherein H 0 For the compressor operating frequency before downconversion, n is a downconversion coefficient greater than 0.1 and less than 1. In alternative embodiments, n may be other suitable values. It should be noted that, in the chip temperature reduction control method of the present invention, when the compressor operating frequency H calculated according to the formula is lower than the minimum operation allowed by the compressorAnd when the line frequency Hmin is reached, the compressor is operated according to the minimum operation frequency Hmin allowed by the compressor by default. After step S58 is executed, the process returns to step S42, where the chip temperature Td is detected again.
With continued reference to fig. 2, when the judgment result of step S57 is yes, i.e., when the chip temperature Td is equal to or higher than the third preset temperature Tc, step S62 is executed, i.e., the compressor is controlled to stop. At the moment, the temperature Td of the chip exceeds 100 ℃, and the temperature is too high, so that the shutdown protection of the compressor is triggered. After step S62 is executed, the chip cooling control method is ended. It can be understood that the chip will gradually cool down by itself after shutdown, and when the temperature of the chip is lower than the recovery operating temperature T0 (for example, lower than 20 degrees celsius), the air conditioner resumes operating, and the chip cooling control method of the present invention is executed again.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is apparent to those skilled in the art that the scope of the present invention is not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.

Claims (10)

1. A chip temperature reduction control method for an air conditioner, wherein the air conditioner has an air conditioner outdoor unit having a computer board on which the chip is located, a heat sink connected to the computer board, and a heat sink fan that can dissipate heat from the heat sink, and the chip temperature reduction control method comprises:
detecting an external environment temperature Tw;
determining an initial rotation speed of the heat dissipation fan based on the external ambient temperature Tw;
judging whether the external environment temperature Tw is greater than or equal to an external environment temperature threshold Tws;
detecting a chip temperature Td when the external environment temperature Tw is greater than or equal to the external environment temperature threshold Tws;
and judging whether to increase the rotation speed of the cooling fan or not based on the chip temperature Td.
2. The chip cooling control method for the air conditioner according to claim 1, wherein the chip cooling control method comprises:
judging whether the chip temperature Td is greater than or equal to a first preset temperature Ta;
and when the temperature Td of the chip is greater than or equal to the first preset temperature Ta, the rotating speed of the cooling fan is increased.
3. The chip cooling control method for an air conditioner according to claim 2, further comprising: and when the temperature Td of the chip is greater than or equal to the first preset temperature Ta, the running frequency of the compressor of the air conditioner is increased.
4. The chip cooling control method for an air conditioner according to claim 3, wherein the chip cooling control method comprises:
re-detecting the chip temperature Td after increasing the compressor operation frequency of the air conditioner;
judging whether the re-measured chip temperature Td is greater than or equal to a second preset temperature Tb, wherein the second preset temperature Tb is greater than the first preset temperature Ta;
and when the re-measured chip temperature Td is less than the second preset temperature Tb, maintaining the current rotating speed of the cooling fan and the current running frequency of the compressor.
5. The chip cooling control method for an air conditioner according to claim 4, wherein the chip cooling control method comprises:
when the re-measured chip temperature Td is greater than or equal to the second preset temperature Tb, judging whether the re-measured chip temperature is greater than a third preset temperature Tc, wherein the third preset temperature Tc is greater than the second preset temperature Tb;
and when the newly measured chip temperature Td is greater than the third preset temperature Tc, controlling the compressor to stop.
6. The chip cooling control method for an air conditioner according to claim 5, wherein the chip cooling control method comprises:
and when the re-measured chip temperature Td is less than the third preset temperature Tc, increasing the rotating speed of the cooling fan and reducing the running frequency of the compressor.
7. The chip cooling control method for an air conditioner according to claim 2, wherein when the chip temperature Td is less than the first preset temperature Ta, the operating frequency of a compressor of the air conditioner is increased, and the current rotational speed of the cooling fan is maintained.
8. The chip cooling control method for an air conditioner according to claim 1, further comprising:
maintaining the initial rotation speed of the cooling fan when the external environment temperature Tw is less than the external environment temperature threshold Tws.
9. The chip temperature reduction control method for an air conditioner according to claim 2, wherein the rotation speed of the heat radiation fan is increased at an increase rate of 50 r/min.
10. The chip cooling control method for the air conditioner according to claim 1, wherein the initial rotation speed is 1000-2000r/min.
CN202210772760.9A 2022-06-30 2022-06-30 Chip cooling control method for air conditioner Pending CN115218294A (en)

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Application Number Priority Date Filing Date Title
CN202210772760.9A CN115218294A (en) 2022-06-30 2022-06-30 Chip cooling control method for air conditioner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210772760.9A CN115218294A (en) 2022-06-30 2022-06-30 Chip cooling control method for air conditioner

Publications (1)

Publication Number Publication Date
CN115218294A true CN115218294A (en) 2022-10-21

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Country Status (1)

Country Link
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