CN111780359A - Air conditioner - Google Patents

Air conditioner Download PDF

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Publication number
CN111780359A
CN111780359A CN202010471898.6A CN202010471898A CN111780359A CN 111780359 A CN111780359 A CN 111780359A CN 202010471898 A CN202010471898 A CN 202010471898A CN 111780359 A CN111780359 A CN 111780359A
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CN
China
Prior art keywords
temperature
indoor
compressor
frequency
air conditioner
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Granted
Application number
CN202010471898.6A
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Chinese (zh)
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CN111780359B (en
Inventor
孙龙
陈胜华
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.)
Hisense Shandong Air Conditioning Co Ltd
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Hisense Shandong Air Conditioning Co Ltd
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Priority to CN202010471898.6A priority Critical patent/CN111780359B/en
Publication of CN111780359A publication Critical patent/CN111780359A/en
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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
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/54—Control or safety arrangements characterised by user interfaces or communication using one central controller connected to several sub-controllers
    • 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
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
    • 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
    • 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
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/30—Velocity
    • 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)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Human Computer Interaction (AREA)
  • Thermal Sciences (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The invention discloses an air conditioner, comprising: an indoor unit that performs heat exchange between a refrigerant and indoor air in a vapor compression refrigeration cycle; an outdoor unit that performs heat exchange between a refrigerant and outdoor air in a vapor compression refrigeration cycle; a controller configured to: acquiring the rotating speed of a fan of the indoor unit, the indoor temperature and the outdoor temperature of the outdoor unit; substituting the fan rotating speed, the indoor temperature and the set frequency corresponding to the outdoor temperature into a calculation formula of the compressor running frequency to calculate the running frequency of the compressor; controlling the compressor to operate at the operating frequency. The invention can adjust the running frequency of the compressor by combining the indoor temperature and air quantity parameters, avoid air outlet condensation and compressor running noise from being transmitted to the indoor space, avoid temperature overshoot and stop, is favorable for optimizing the running performance of the air conditioner and improves the comfort experience of users.

Description

Air conditioner
Technical Field
The invention relates to the technical field of air conditioners, in particular to an air conditioner which uses a vapor compression type refrigeration cycle to heat.
Background
At present, the air conditioner mainly adopts a control strategy of temperature division and frequency limitation, namely, the operation frequency of the compressor is adjusted according to the outdoor temperature, but the control strategy does not consider the influence of the indoor temperature and the air volume parameter on the operation frequency of the compressor. The main effects are as follows:
1. in the process of refrigerating the air conditioner, when low wind is set, because cold wind and hot wind are intersected at the position of the air outlet, the air outlet is easy to generate condensation when the relative humidity of the air is high;
2. in the heating process of the air conditioner, when low wind is set, the indoor outlet air temperature rises, the indoor unit is at a high pressure side, and the indoor system pressure rises due to the reduction of the wind volume, so that the running noise of the outdoor compressor is easily transmitted to the indoor side;
3. the air conditioner just reduces the operating frequency of compressor when detecting that outdoor temperature is close to the settlement temperature, but because the temperature is hysteresis parameter, often can cause the temperature to drop (refrigeration) or rise (heat), causes reciprocal start-stop scheduling problem, influences user experience effect.
In view of the above, there is a need for improvements in control strategies.
Disclosure of Invention
The invention provides an air conditioner, which aims to solve the technical problem that the influence of indoor temperature and air volume parameters on the running frequency of a compressor is not considered in the existing air conditioner compressor control strategy, can adjust the running frequency of the compressor by combining the indoor temperature and the air volume parameters, avoids air outlet condensation and compressor running noise from being transmitted indoors, avoids temperature overshoot and shutdown, is beneficial to optimizing the running performance of the air conditioner and improves the comfort experience of users.
An embodiment of the present invention provides an air conditioner, including:
an indoor unit that performs heat exchange between a refrigerant and indoor air in a vapor compression refrigeration cycle;
an outdoor unit that performs heat exchange between a refrigerant and outdoor air in a vapor compression refrigeration cycle;
a controller configured to:
acquiring the rotating speed of a fan of the indoor unit, the indoor temperature and the outdoor temperature of the outdoor unit;
substituting the fan rotating speed, the indoor temperature and the set frequency corresponding to the outdoor temperature into a calculation formula of the compressor running frequency to calculate the running frequency of the compressor;
controlling the compressor to operate at the operating frequency.
Further, the calculation formula of the compressor operation frequency is as follows:
Foperation of＝Δn×ΔT×FSetting up；
Wherein, FOperation ofFor the operating frequency, Δ n is a fan rotation speed parameter calculated according to the fan rotation speed, Δ T is a heating temperature parameter calculated according to the indoor temperature during heating operation or a cooling temperature parameter calculated according to the indoor temperature during cooling operation, FSetting upIs the set frequency.
Further, the calculation formula of the fan rotating speed parameter is as follows:
Δn＝n/nhigh wind；
Wherein n is the fan speed, nHigh windThe fan speed is the fan speed when running in high wind.
Further, the calculation formula of the heating temperature parameter is as follows:
ΔT＝1-(Tindoor use-TSetting up)/100)；
Wherein, TIndoor useIs the room temperature, TSetting upTo set the temperature.
Further, the calculation formula of the refrigeration temperature parameter is as follows:
ΔT＝1-(Tsetting up-TIndoor use)/100)；
Wherein, TSetting upTo set the temperature, TIndoor useIs the room temperature.
Further, the set temperature is 26 ℃.
In the air conditioner provided by the embodiment of the present invention, the controller is configured to: substituting the obtained fan rotating speed, the indoor temperature and the set frequency corresponding to the outdoor temperature into a calculation formula of the running frequency of the compressor, calculating the running frequency of the compressor, and controlling the compressor to run at the running frequency. The embodiment of the invention has the advantages that the air conditioner realizes the adjustment of the running frequency of the compressor by combining the indoor temperature and air quantity parameters, avoids the transmission of air outlet condensation and compressor running noise to the indoor space, avoids temperature overshoot and shutdown, is favorable for optimizing the running performance of the air conditioner and improves the comfort experience of users.
Drawings
Fig. 1 is a schematic structural view of an air conditioner according to an embodiment of the present invention;
wherein the reference numbers in the drawings of the specification are as follows:
1: an air conditioner; 2: an indoor unit; 3: an outdoor unit; 4: and a controller.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Please refer to fig. 1.
As shown in fig. 1, an embodiment of the present invention provides an air conditioner 1, including: an indoor unit 2 that performs heat exchange between a refrigerant and indoor air in a vapor compression refrigeration cycle; an outdoor unit 3 that performs heat exchange between a refrigerant and outdoor air in a vapor compression refrigeration cycle; a controller 4 configured to: acquiring the fan rotating speed and the indoor temperature of the indoor unit 2 and the outdoor temperature of the outdoor unit 3; substituting the rotating speed of the fan, the indoor temperature and the set frequency corresponding to the outdoor temperature into a calculation formula of the running frequency of the compressor, and calculating to obtain the running frequency of the compressor; the compressor is controlled to operate at an operating frequency.
Illustratively, the indoor temperature is acquired by arranging a temperature sensor on the indoor unit 2, the outdoor temperature is acquired by arranging a temperature sensor on the outdoor unit 3, the fan rotating speed, the indoor temperature and the outdoor temperature of the indoor unit 2 and the outdoor temperature of the outdoor unit 3 are acquired by the controller 4, the set frequency of the compressor at the current outdoor temperature is determined according to the corresponding relation between the outdoor temperature and the set frequency of the compressor, which are set in advance during high-wind operation, the fan rotating speed, the indoor temperature and the set frequency are substituted into a calculation formula of the compressor operating frequency, and the operating frequency of the compressor is calculated, so that the compressor is controlled to operate at the operating frequency.
The controller 4 in this embodiment is based on outdoor temperature, on the basis of controlling the compressor to operate with the set frequency, still according to fan rotational speed and indoor temperature, further adjust the set frequency to operating frequency, control the compressor to operate with operating frequency, make when fan rotational speed and/or indoor temperature change, can in time adjust the operating frequency of compressor effectively, for example when low wind is operated, reduce the operating frequency of compressor, transmit the compressor noise to indoor when avoiding air outlet condensation and heating during refrigeration, when operating at low temperature, improve the operating frequency of compressor, avoid temperature overshoot, shut down, be favorable to optimizing the running performance of air conditioner 1, guarantee user's comfort level and experience.
In a preferred embodiment, the compressor operating frequency is calculated as:
Foperation of＝Δn×ΔT×FSetting up；
Wherein, FOperation ofFor the operating frequency, Δ n is a fan rotational speed parameter calculated according to the fan rotational speed, Δ T is a heating temperature parameter calculated according to the indoor temperature during heating operation or a cooling temperature parameter calculated according to the indoor temperature during cooling operation, FSetting upTo set the frequency.
The controller 4 in this embodiment calculates the formula F according to the operating frequency of the compressorOperation of＝Δn×ΔT×FSetting upFurther adjusting the set frequency of the compressor to operationThe frequency can be increased, the set frequency of the compressor is limited by the fan rotating speed parameter and the refrigeration/heating temperature parameter, the running frequency of the compressor is adjusted by combining the indoor temperature and the air quantity parameter, the running performance of the compressor is favorably optimized, and the comfort level experience of a user is improved.
In a preferred embodiment, the calculation formula of the fan rotation speed parameter is as follows:
Δn＝n/nhigh wind；
Wherein n is the rotating speed of the fan, nHigh windThe fan speed is the fan speed when running in high wind.
The embodiment is realized by setting the fan rotating speed parameter to be n/nHigh windThe air conditioner can operate in low wind, namely when the currently acquired fan rotating speed is less than the fan rotating speed in high wind operation, the set frequency of the compressor is reduced by the controller 4 according to the calculation formula of the compressor operating frequency by using the fan rotating speed parameter less than 1, the compressor is controlled to operate at the adjusted operating frequency, and air outlet condensation and compressor noise are prevented from being transmitted to the indoor space in heating during refrigeration.
In a preferred embodiment, the heating temperature parameter is calculated by the following formula:
ΔT＝1-(Tindoor use-TSetting up)/100)；
Wherein, TIndoor useIs the indoor temperature, TSetting upTo set the temperature.
The embodiment is implemented by setting the heating temperature parameter to 1- (T)Indoor use-TSetting up)/100)]When the indoor temperature is higher, namely the indoor temperature is higher than the set temperature, the controller 4 reduces the set frequency of the compressor by the heating temperature parameter less than 1 according to the calculation formula of the operating frequency of the compressor, and controls the compressor to operate at the adjusted operating frequency; when the indoor temperature is lower, namely the indoor temperature is lower than the set temperature, the controller 4 increases the set frequency of the compressor by the heating temperature parameter larger than 1 according to the calculation formula of the operating frequency of the compressor, and controls the compressor to operate at the adjusted operating frequency. Heating temperature parameters are set according to the temperature difference between the indoor temperature and the set temperature, and the control can be carried out when the indoor temperature is close to the set temperatureThe controller 4 adjusts the running frequency of the compressor in advance, so that the indoor temperature is stabilized at the set temperature as soon as possible, and temperature overshoot and shutdown are avoided.
In a preferred embodiment, the calculation formula of the cooling temperature parameter is:
ΔT＝1-(Tsetting up-TIndoor use)/100)；
Wherein, TSetting upTo set the temperature, TIndoor useIs the room temperature.
The present embodiment is implemented by setting the refrigerating temperature parameter Δ T to [1- (T)Setting up-TIndoor use)/100)]When the indoor temperature is higher, namely the indoor temperature is higher than the set temperature, the controller 4 can increase the set frequency of the compressor by the heating temperature parameter which is higher than 1 according to the calculation formula of the operating frequency of the compressor, and control the compressor to operate at the adjusted operating frequency; when the indoor temperature is lower, namely the indoor temperature is lower than the set temperature, the controller 4 reduces the set frequency of the compressor by the heating temperature parameter less than 1 according to the calculation formula of the operating frequency of the compressor, and controls the compressor to operate at the adjusted operating frequency. And heating temperature parameters are set according to the temperature difference between the indoor temperature and the set temperature, and when the indoor temperature is close to the set temperature, the operating frequency of the compressor can be adjusted in advance by the controller 4, so that the indoor temperature is stabilized at the set temperature as soon as possible, and temperature overshoot and shutdown are avoided.
In a preferred embodiment, the set temperature is 26 ℃.
The healthy temperature of the user of 26 ℃ is selected as the set temperature, so that the comfortable experience of the user can be guaranteed.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.

Claims (6)

1. An air conditioner, comprising:
an indoor unit that performs heat exchange between a refrigerant and indoor air in a vapor compression refrigeration cycle;
an outdoor unit that performs heat exchange between a refrigerant and outdoor air in a vapor compression refrigeration cycle;
a controller configured to:
acquiring the rotating speed of a fan of the indoor unit, the indoor temperature and the outdoor temperature of the outdoor unit;
substituting the fan rotating speed, the indoor temperature and the set frequency corresponding to the outdoor temperature into a calculation formula of the compressor running frequency to calculate the running frequency of the compressor;
controlling the compressor to operate at the operating frequency.
2. The air conditioner as claimed in claim 1, wherein the operating frequency of the compressor is calculated by the formula:
Foperation of＝Δn×ΔT×FSetting up；
Wherein, FOperation ofFor the operating frequency, Δ n is a fan rotation speed parameter calculated according to the fan rotation speed, Δ T is a heating temperature parameter calculated according to the indoor temperature during heating operation or a cooling temperature parameter calculated according to the indoor temperature during cooling operation, FSetting upIs the set frequency.
3. The air conditioner according to claim 2, wherein the fan rotation speed parameter is calculated by the formula:
Δn＝n/nhigh wind；
Wherein n is the fan speed, nHigh windThe fan speed is the fan speed when running in high wind.
4. The air conditioner as claimed in claim 2, wherein the heating temperature parameter is calculated by the formula:
ΔT＝1-(Tindoor use-TSetting up)/100)；
Wherein, TIndoor useIs the room temperature, TSetting upTo set the temperature.
5. The air conditioner according to claim 2, wherein the refrigerating temperature parameter is calculated by the formula:
ΔT＝1-(Tsetting up-TIndoor use)/100)；
Wherein, TSetting upTo set the temperature, TIndoor useIs the room temperature.
6. The air conditioner according to claim 4 or 5, wherein the set temperature is 26 ℃.
CN202010471898.6A 2020-06-02 2020-06-02 Air conditioner Active CN111780359B (en)

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CN111780359B CN111780359B (en) 2022-12-20

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113375269A (en) * 2021-06-17 2021-09-10 宁波奥克斯电气股份有限公司 Air conditioner control method, air conditioner control device and air conditioner

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06185795A (en) * 1992-12-18 1994-07-08 Fujitsu General Ltd Controlling method of air conditioner
JP2001116329A (en) * 1999-10-14 2001-04-27 Matsushita Electric Ind Co Ltd Control of air conditioner
JP2015215107A (en) * 2014-05-08 2015-12-03 三菱電機株式会社 Air conditioner
CN106440587A (en) * 2016-09-29 2017-02-22 海信（广东）空调有限公司 An air conditioner cooling control method and air conditioner
CN107894077A (en) * 2017-10-19 2018-04-10 广东美的制冷设备有限公司 Air conditioner and its control method, control device and computer-readable recording medium
CN107906700A (en) * 2017-10-19 2018-04-13 广东美的制冷设备有限公司 Air conditioner and its control method, control device and computer-readable recording medium
CN109186043A (en) * 2018-07-19 2019-01-11 青岛海尔空调器有限总公司 Wall-hanging air conditioner and its control method
CN110595007A (en) * 2019-09-30 2019-12-20 宁波奥克斯电气股份有限公司 Frequency control method and device for variable frequency air conditioner and air conditioner

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06185795A (en) * 1992-12-18 1994-07-08 Fujitsu General Ltd Controlling method of air conditioner
JP2001116329A (en) * 1999-10-14 2001-04-27 Matsushita Electric Ind Co Ltd Control of air conditioner
JP2015215107A (en) * 2014-05-08 2015-12-03 三菱電機株式会社 Air conditioner
CN106440587A (en) * 2016-09-29 2017-02-22 海信（广东）空调有限公司 An air conditioner cooling control method and air conditioner
CN107894077A (en) * 2017-10-19 2018-04-10 广东美的制冷设备有限公司 Air conditioner and its control method, control device and computer-readable recording medium
CN107906700A (en) * 2017-10-19 2018-04-13 广东美的制冷设备有限公司 Air conditioner and its control method, control device and computer-readable recording medium
CN109186043A (en) * 2018-07-19 2019-01-11 青岛海尔空调器有限总公司 Wall-hanging air conditioner and its control method
CN110595007A (en) * 2019-09-30 2019-12-20 宁波奥克斯电气股份有限公司 Frequency control method and device for variable frequency air conditioner and air conditioner

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113375269A (en) * 2021-06-17 2021-09-10 宁波奥克斯电气股份有限公司 Air conditioner control method, air conditioner control device and air conditioner

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