CN114502895A - Air conditioner, control method for air conditioner, and program - Google Patents
Air conditioner, control method for air conditioner, and program Download PDFInfo
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- CN114502895A CN114502895A CN201980101190.7A CN201980101190A CN114502895A CN 114502895 A CN114502895 A CN 114502895A CN 201980101190 A CN201980101190 A CN 201980101190A CN 114502895 A CN114502895 A CN 114502895A
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- 238000000034 method Methods 0.000 title claims description 33
- 238000011156 evaluation Methods 0.000 claims abstract description 38
- 238000001514 detection method Methods 0.000 claims abstract description 14
- 239000003507 refrigerant Substances 0.000 claims description 36
- 230000008569 process Effects 0.000 claims description 24
- 238000002360 preparation method Methods 0.000 claims 2
- 238000007664 blowing Methods 0.000 description 28
- 238000004140 cleaning Methods 0.000 description 27
- 238000009434 installation Methods 0.000 description 16
- 239000007788 liquid Substances 0.000 description 16
- 238000012360 testing method Methods 0.000 description 13
- 238000013500 data storage Methods 0.000 description 8
- 230000032683 aging Effects 0.000 description 6
- 230000007613 environmental effect Effects 0.000 description 6
- 238000012545 processing Methods 0.000 description 6
- 238000001816 cooling Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 238000010248 power generation Methods 0.000 description 4
- 238000009423 ventilation Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 238000010981 drying operation Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000012937 correction Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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Classifications
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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
- F24F11/86—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
- 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
- F24F11/87—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling absorption or discharge of heat in outdoor units
- F24F11/871—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling absorption or discharge of heat in outdoor units by controlling outdoor fans
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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)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The outdoor unit of the air conditioner can be appropriately controlled based on the positional relationship between the outdoor unit and surrounding obstacles. Therefore, the control unit (10) of the air conditioner (900) is provided with: a surrounding environment estimation unit (14) that calculates, from the physical quantities (IF, VF), an evaluation value that changes in accordance with the distance between the outdoor unit casing and the obstacle; a fan motor rotation detection unit (12) that detects the rotational speed of a fan motor (966); and operation control units (16, 18, 20) that control the operation of the motor drive unit (122) or the compressor (950) on the basis of the evaluation values.
Description
Technical Field
The invention relates to an air conditioner, a control method of the air conditioner and a program.
Background
As background art in this field, paragraphs 0012 and 0013 of the following patent document 1 describe: "… …" in the case of performing the steady operation during the cooling operation, the refrigerant circulates through the refrigerant circuit 8, while the heat-source-side fan 13 is driven in the normal direction by the steady driving unit G, the refrigerant exchanges heat with air in the heat-source-side heat exchanger 4, and the heated air is discharged to the outside. On the other hand, when the rotation speed of the heat-source-side fan 13 is reduced by headwind, the signal from the rotation speed detection means F is received, and when the detected rotation speed of the heat-source-side fan 13 is lower than the predetermined set value α 1, the reverse rotation control means B1 switches the rotation of the heat-source-side fan 13 to reverse rotation. Accordingly, the outside air is introduced in accordance with the wind direction of the outside air, and the ventilation amount is restored to smoothly perform heat exchange. "
Documents of the prior art
Patent document
Patent document 1: japanese laid-open patent publication No. 4-332333
Disclosure of Invention
Problems to be solved by the invention
However, patent document 1 does not describe that the outdoor unit of the air conditioner is appropriately controlled based on the positional relationship between the outdoor unit and the peripheral obstacle.
The present invention has been made in view of the above circumstances, and an object thereof is to provide an air conditioner capable of appropriately controlling an outdoor unit of the air conditioner, and a control method and a program for the air conditioner.
Means for solving the problems
In order to solve the above problem, an air conditioner according to the present invention includes: an outdoor heat exchanger provided inside the outdoor unit casing and having fins for performing heat exchange; a compressor which is provided with a compressor motor and compresses a refrigerant for heat exchange; a blower fan that blows air to the outdoor heat exchanger; a fan motor for driving the blower fan; a motor drive unit that supplies electric power to the fan motor and detects a physical quantity of the fan motor; and a control unit that controls the motor drive unit, the control unit including: a surrounding environment estimation unit that calculates an evaluation value that changes according to a distance between the outdoor unit casing and an obstacle, based on the physical quantity; a fan motor rotation detection unit that detects a rotation speed of the fan motor; and an operation control unit that controls operation of the motor drive unit or the compressor based on the evaluation value.
Effects of the invention
According to the present invention, the outdoor unit of the air conditioner can be appropriately controlled based on the positional relationship between the outdoor unit and the peripheral obstacle.
Drawings
Fig. 1 is a diagram of a refrigerant cycle system of an air conditioner 900 according to a preferred first embodiment.
Fig. 2 is a schematic view of an installation environment of the outdoor unit.
Fig. 3 shows a relationship between power consumption and a rear distance when the outdoor fan motor is rotated in a reverse direction.
Fig. 4 shows a relationship between power consumption and a forward distance when the outdoor fan motor is rotated in the reverse direction.
Fig. 5 shows a relationship between power consumption and a forward distance when the outdoor fan motor rotates in the forward direction.
Fig. 6 is a flowchart of an environment estimation routine of the first embodiment.
Fig. 7 is a flowchart of an environment estimation routine of the third embodiment.
Detailed Description
(first embodiment)
(constitution of the first embodiment)
Fig. 1 is a diagram of a refrigerant cycle system of an air conditioner 900 according to a preferred first embodiment.
As shown in fig. 1, the air conditioner 900 of the present embodiment includes an outdoor unit 960 and an indoor unit 970, and further includes a gas pipe 982 and a liquid pipe 984 for connecting the both.
The outdoor unit 960 includes a compressor 950, a four-way valve 962, an outdoor heat exchanger 963, an outdoor expansion valve 964, and an outdoor unit control unit 10 (control unit, computer). They are connected in sequence by piping (no reference numeral). The compressor 950 includes a compression mechanism 951 for compressing a refrigerant and a compressor motor 952 for rotationally driving the compression mechanism 951. The outdoor unit 960 includes an outdoor fan 965 (blower fan), an outdoor fan motor 966 (fan motor), an outdoor fan motor drive device 122 (motor drive unit), and a compressor motor drive device 124. The outdoor heat exchanger 963 includes fins (not shown). The outdoor fan 965 is rotated and driven by the outdoor fan motor 966 to cool the outdoor heat exchanger 963.
In fig. 1, arrows along solid lines shown in pipes such as the gas pipe 982 and the liquid pipe 984 indicate the flow of the refrigerant during the cooling operation of the air conditioner 900.
In the cooling operation, four-way valve 962 connects the discharge side of compressor 950 to outdoor heat exchanger 963 and the suction side of compressor 950 to gas pipe 982 as shown by solid lines. The refrigerant discharged from the compressor 950 is in a high-temperature and high-pressure gas state, and flows through the four-way valve 962 to the outdoor heat exchanger 963. The refrigerant in the gas state flowing into the outdoor heat exchanger 963 exchanges heat with outdoor air supplied by the outdoor fan 965, is condensed, and turns into a refrigerant in the liquid state. The liquid refrigerant passes through the outdoor expansion valve 964 and the liquid pipe 984 in the fully opened state, and flows into the indoor unit 970.
The liquid refrigerant flowing into the indoor unit 970 is decompressed by the indoor expansion valve 974, and becomes a low-temperature low-pressure gas-liquid mixture refrigerant. The low-temperature and low-pressure gas-liquid mixture refrigerant flows into the indoor heat exchanger 973, exchanges heat with the indoor air supplied by the indoor fan 975, evaporates, and turns into a gaseous refrigerant. At this time, the air in the room is cooled by latent heat of evaporation of the gas-liquid mixed refrigerant, and the cool air is sent into the room. The gaseous refrigerant flowing out of indoor unit 970 returns to outdoor unit 960 through gas pipe 982. The refrigerant in the gas state returned to the outdoor unit 960 is sucked into the compressor 950 through the four-way valve 962, and is compressed again, thereby forming a series of refrigerant cycles.
On the other hand, in the heating operation, four-way valve 962 communicates the discharge side of compressor 950 with indoor heat exchanger 973 and the suction side of compressor 950 with outdoor heat exchanger 963 through gas pipe 982 as indicated by a broken line. The high-temperature and high-pressure gaseous refrigerant discharged from the compressor 950 flows through the four-way valve 962 and flows to the indoor heat exchanger 973. The gas refrigerant flowing into the indoor heat exchanger 973 exchanges heat with indoor air supplied by the indoor fan motor 976, condenses, and turns into a liquid refrigerant. The liquid refrigerant flows into the outdoor unit 960 through the indoor expansion valve 974 and the liquid pipe 984.
The liquid refrigerant flowing into the outdoor unit 960 is decompressed by the outdoor expansion valve 964, and becomes a low-temperature low-pressure gas-liquid mixture refrigerant. The low-temperature and low-pressure gas-liquid mixture refrigerant flows into the outdoor heat exchanger 963, exchanges heat with outdoor air supplied by the outdoor fan 965, evaporates, and turns into a gaseous refrigerant. At this time, the outdoor air is cooled by latent heat of evaporation of the gas-liquid mixed refrigerant, and cool air is discharged from the outdoor unit 960. The refrigerant in a gaseous state discharged from the outdoor heat exchanger 963 is sucked into the compressor 950 through the four-way valve 962, and is compressed again, thereby forming a series of refrigerant cycles.
The outdoor fan motor 966 and the compressor motor 952 are all magnet type three-phase synchronous motors. The outdoor fan motor drive device 122 and the compressor motor drive device 124 convert the supplied dc power into three-phase ac power having an arbitrary frequency, thereby driving the outdoor fan motor 966 and the compressor motor 952 (compressor motor), respectively. The current supplied to the outdoor fan motor 966 by the outdoor fan motor driving device 122 is referred to as IF (physical quantity), the voltage is referred to as VF (physical quantity), and the power consumption is referred to as PF. The rotation speed of the outdoor fan motor 966 is referred to as SF. The outdoor fan motor driving device 122 supplies the measurement results of the instantaneous values of the current IF and the voltage VF to the outdoor unit control unit 10.
Each of the outdoor Unit control Unit 10 and the indoor Unit control Unit 50 includes a CPU (Central Processing Unit), a RAM (Random Access Memory), a ROM (Read Only Memory), and an SSD (Solid State Drive) as hardware of a general computer, and an OS (Operating System), an application program, various data, and the like are stored in the SSD. The OS and the application programs are developed in the RAM and executed by the CPU. In fig. 1, functions implemented by an application program or the like inside the outdoor unit control unit 10 are shown as modules.
That is, the outdoor unit control unit 10 includes a fan speed detection unit 12 (fan motor rotation detection unit, fan motor rotation unit), an environment estimation unit 14 (ambient environment estimation unit ), a normal operation control unit 16 (operation control unit ), a blowing operation control unit 18 (operation control unit ), an outdoor unit cleaning operation control unit 20 (operation control unit ), an indoor unit cleaning operation control unit 22, and a data storage unit 24. The outdoor unit control unit 10 will be described in detail later.
Fig. 2 is a schematic diagram of an installation environment 200 of the outdoor unit 960. The outdoor unit 960 includes a casing 910 (outdoor unit casing) having a substantially rectangular parallelepiped shape, and the casing 910 is installed on the floor surface 202 of the installation environment 200. The outdoor heat exchanger 963 is disposed at the rear portion in the casing 910, and the outdoor fan motor 966 and the outdoor fan 965 are disposed in front of the outdoor heat exchanger 963.
A rear wall 210 (obstacle) and a front wall 212 (obstacle) which are ventilation obstacles are provided behind and in front of the housing 910. The distance from the rear surface of the housing 910 to the rear wall 210 is referred to as a rear distance LR, and the distance from the front surface of the housing 910 to the front wall 212 is referred to as a front distance LF. The estimated values of the front distance LF and the rear distance LR (described in detail later) are referred to as an estimated front distance LFH (estimated value) and an estimated rear distance LRH (estimated value), respectively.
In addition, when the wind direction generated by the outdoor fan 965 flows from the rear surface to the front surface of the case 910, the wind direction is referred to as a "positive direction" as illustrated in the drawing. In addition, when the wind direction generated by the outdoor fan 965 flows from the front surface to the rear surface of the case 910, the wind direction is referred to as a "reverse direction" as shown in the drawing. The rotation direction of the outdoor fan 965 may be referred to as a "forward direction" and a "reverse direction". That is, the rotation direction in which wind in the forward direction is generated is referred to as "forward direction", and the rotation direction in which wind in the reverse direction is generated is referred to as "reverse direction".
In the present embodiment, two environments, an "open environment" and a "closed environment", are assumed as the installation environment 200. The "open environment" refers to an environment that can secure a sufficiently long front distance LF, such as a courtyard of a house, for example. On the other hand, the "closed environment" refers to an environment having a relatively short forward distance LF, such as a balcony or a terrace. Specific methods for distinguishing the open environment from the closed environment and installation conditions of the outdoor unit 960 are different depending on the model of the air conditioner 900.
As a specific example, an environment in which the forward distance LF of 800mm or more can be ensured is defined as an "open environment", and an environment in which the forward distance LF of 800mm or more cannot be ensured is defined as an "closed environment". Further, "the rear distance LR of 50mm or more and the front distance LF of 800mm or more are ensured in the open environment, and the rear distance LR of 150mm or more and the front distance LF of 400mm or more are ensured in the closed environment" can be determined as the installation condition of the outdoor unit 960. In the above specific example, the front distance LF of 800mm or more in the open environment is a distance in which a general layout in japan is assumed. The rear distance LR of 50mm or more corresponds to the height of a foot portion (no reference numeral) in the general casing 910 of the outdoor unit 960. In addition, the rear distance LR of 150mm or more in the closed environment is a distance to prevent performance deterioration due to short circuit. These numerical values are variously changed depending on the installation place and the product specification.
Returning to fig. 1, the fan speed detector 12 detects the rotation speed SF of the outdoor fan 965 based on the measurement results of the current IF and the voltage VF supplied from the outdoor fan motor driver 122. The outdoor fan 965 may be rotated by blowing natural wind or the like even when not driven. The outdoor fan motor 966 is a magnet type three-phase synchronous motor, and therefore functions as a generator at this time, and supplies a current IF and a voltage VF to the outdoor fan motor driving device 122. The outdoor fan motor driving device 122 also outputs the measurement results of the current IF and the voltage VF to the outdoor unit control unit 10 in this state. Further, fan speed detection unit 12 detects rotation speed SF when rotating by natural wind or the like, based on current IF and voltage VF.
The environment estimation unit 14 rotates the outdoor fan 965 in the forward direction and the reverse direction, and estimates the contents of the installation environment 200 (see fig. 2) based on the power consumption PF supplied to the outdoor fan motor 966 at this time. For example, the environment estimation unit 14 calculates the estimated rear distance LRH and the estimated front distance LFH shown in fig. 2. The environment estimation unit 14 records the estimation result in the data storage unit 24, and sets control parameters in the normal operation control unit 16, the later-described blowing operation control unit 18, and the outdoor unit cleaning operation control unit 20 based on the estimation result.
The normal operation control unit 16 controls the normal operation. Here, the "normal operation" refers to the cooling operation, the heating operation, the dehumidifying operation, and the like. In the normal operation, the rotation direction of the outdoor fan motor 966 is a forward direction.
The air-blowing operation control unit 18 performs an air-blowing operation of the outdoor unit 960 for each predetermined air-blowing operation cycle TB. Here, the blowing operation is an operation for blowing away dust accumulated in the outdoor heat exchanger 963 and dust accumulated behind the outdoor unit 960. That is, during the blowing operation, the blowing operation control unit 18 rotates the outdoor fan 965 at a predetermined blowing rotational speed SB (rotational speed, second rotational speed) in the reverse direction for a predetermined blowing rotational time TBA (operating time) in a state where the operation of the compressor 950 is stopped.
It is difficult to effectively remove dirt adhering to the outdoor heat exchanger 963 only by the above-described blowing operation. Therefore, the outdoor unit cleaning operation control unit 20 performs the outdoor unit cleaning operation for each outdoor unit cleaning operation cycle TC (predetermined period) longer than the air blowing operation cycle TB (predetermined period). Here, the outdoor unit cleaning operation is to cool the outdoor heat exchanger 963 to frost the same, heat the outdoor heat exchanger 963 to melt the frost, and clean the outdoor heat exchanger 963 with water. In the outdoor unit cleaning operation, the outdoor heat exchanger 963 is cleaned with water and then dried by the outdoor heat exchanger 963.
Therefore, the outdoor unit cleaning operation control unit 20 rotates the outdoor fan 965 at the predetermined drying operation speed SC (rotation speed, second rotation speed) in the reverse direction for the predetermined drying rotation time TCA (operation time). The indoor unit cleaning operation control unit 22 performs an indoor unit cleaning operation for each predetermined indoor unit cleaning operation cycle TI. Here, the indoor unit cleaning operation is to cool the indoor heat exchanger 973 to frost it, and then heat the indoor heat exchanger 973 to melt the frost, so that the indoor heat exchanger 973 is cleaned with water.
(data structure of first embodiment)
The data storage unit 24 stores characteristic data indicating a relationship between the rotation direction of the outdoor fan motor 966, the power consumption PF of the outdoor fan motor 966, the front distance LF, and the rear distance LR. Fig. 3 to 5 described below illustrate examples of these characteristic data as graphs.
Fig. 3 shows a relationship between power consumption PF and the rear distance LR when the outdoor fan motor 966 is rotated in the reverse direction at a predetermined rotation speed (hereinafter referred to as a test reverse rotation speed RS10 (first rotation speed)). The reverse rotation speed RS10 was 600rpm, for example, during the test. As shown in fig. 3, the larger the rear distance LR, the smaller the power consumption PF of the outdoor fan motor 966. A, B, C, D on the horizontal axis of fig. 3 is a representative value of the rear distance LR.
The representative value A, B, C, D is, for example, 50mm, 100mm, 150mm, 200 mm. From the graph of fig. 3, the rear distance LR can be estimated by obtaining the power consumption PF. For example, if the power consumption PF of the outdoor fan motor 966 is PF2 shown in the drawing, it can be estimated that the rear distance LR is the representative value C.
The minimum value of the front distance LF (see fig. 2) is defined as the installation condition of the outdoor unit 960. In the above example, the minimum value of the front distance LF is 400 mm. Thus, when the front distance LF is equal to or greater than a predetermined minimum value, the power consumption PF is almost independent of the front distance LF. Therefore, the rear distance LR can be estimated only by the power consumption PF regardless of the front distance LF.
Fig. 4 shows a relationship between power consumption PF and a forward distance LF when the outdoor fan motor 966 is rotated in the reverse direction at the reverse rotation speed RS10 in the test. As explained earlier in fig. 3, the power consumption PF is almost independent of the front distance LF. Therefore, as shown in fig. 4, even if the front distance LF varies, the power consumption PF is substantially equal to a fixed value determined by the rear distance LR.
Fig. 5 shows a relationship between power consumption PF and a forward distance LF when the outdoor fan motor 966 rotates at a predetermined rotational speed in the forward direction (hereinafter, referred to as a test-time forward rotational speed RS20 (third rotational speed)). The forward rotation speed RS20 during the test is, for example, 600 rpm. The relationship between the power consumption PF and the front distance LF differs depending on the rear distance LR. Therefore, in fig. 5, the characteristic curve is shown with respect to the 4 representative values A, B, C, D of the rear distance LR. For example, if the rear distance LR is the representative value C and the power consumption PF is PF4 shown in the figure, it can be estimated that the front distance LF is LF6 in the figure. When the rear distance LR is the representative value B and the power consumption PF is PF6 shown in the figure, it can be estimated that the front distance LF is either LF2 or LF4 in the figure.
(operation of the first embodiment)
(action based on Environment estimation routine)
Fig. 6 is a flowchart of an environment estimation routine executed by the outdoor unit control unit 10 according to the present embodiment. For example, it is preferable that the routine is executed immediately after the outdoor unit cleaning operation control unit 20 (see fig. 1) performs the outdoor unit cleaning operation and then the normal operation is performed for 30 minutes or more, and immediately after the outdoor fan 965 is stopped. The reason for this will be explained. The power consumption of the outdoor fan motor 966 is greatly affected by the coil temperature (copper loss). Therefore, in the case of estimating the environment, it is preferable to perform the predetermined operation so that the temperature of the outdoor fan motor 966 becomes substantially the same. In particular, when the outdoor unit cleaning operation is performed, it can be considered that the outdoor fan motor 966 performs a substantially constant operation as long as the rotation speed and the operation time of the fan of the outdoor fan 965 are not changed. Therefore, by estimating the environment immediately after the outdoor unit cleaning operation, the measurement conditions can be easily made relatively uniform. As another method, a method of correcting the environment estimation result using an outside air temperature measurement sensor (not shown) of the outdoor unit is considered.
When the process is started in fig. 6, in step S2, the environment estimation section 14 rotates the outdoor fan 965 in the reverse direction at the test-time reverse rotation speed RS 10. Next, when the process proceeds to step S4, the environment estimating unit 14 calculates the power consumption PF when the outdoor fan motor 966 rotates in the reverse direction, based on instantaneous values of the current IF and the voltage VF (see fig. 1). Next, when the process proceeds to step S6, the environment estimation unit 14 calculates the estimated rear distance LRH based on the power consumption PF and the table shown in fig. 3. Next, when the process proceeds to step S8, the environment estimation unit 14 records the calculated estimated rear distance LRH in the data storage unit 24.
Next, when the process advances to step S10, the environment estimation portion 14 rotates the outdoor fan 965 in the forward direction at the test-time forward rotation speed RS 20. Next, when the process proceeds to step S12, the environment estimation unit 14 calculates the power consumption PF when the outdoor fan motor 966 is rotating in the forward direction, based on instantaneous values of the current IF and the voltage VF (see fig. 1).
Next, when the process proceeds to step S14, the environment estimation unit 14 determines any one of the representative values A, B, C, D as a representative value for the current application based on the estimated rear distance LRH obtained previously. For example, the absolute value of the difference between each representative value A, B, C, D and the estimated rear distance LRH may be calculated, and the representative value having the smallest absolute value of the differences may be determined as the representative value of the present application. Next, when the process proceeds to step S16, the environment estimation unit 14 calculates the estimated front distance LFH based on the representative value of the current application, the power consumption PF, and the table shown in fig. 5.
Next, when the process proceeds to step S18, the environment estimation unit 14 records the calculated estimated front distance LFH in the data storage unit 24. The environment estimation unit 14 obtains an estimated environmental condition (open environment or closed environment) of the installation environment 200 (see fig. 2) based on the estimated front distance LFH and the estimated rear distance LRH, and stores the result in the data storage unit 24. Next, when the process proceeds to step S20, the normal operation control unit 16, the blowing operation control unit 18, and the outdoor unit cleaning operation control unit 20 set various control parameters based on the estimated front distance LFH, the estimated rear distance LRH, and the estimated environmental conditions (open environment or closed environment). Through the above steps, the processing of the present routine is ended.
Here, the control parameters set in step S20 are set as follows, for example.
First, the normal operation control unit 16 may set the control parameter so that the rotation speed of the compressor motor 952 or the outdoor fan motor 966 for the same heat load is faster as the estimated forward distance LFH or the estimated backward distance LRH is shorter. This is because the shorter the estimated front distance LFH or the estimated rear distance LRH is, the higher the ventilation resistance in the installation environment 200 is.
In addition, when the estimated environmental condition of the installation environment 200 is a closed environment, the blowing operation control unit 18 sets the control parameters such that the blowing operation cycle TB of the blowing operation control unit 18 is shortened, the blowing rotation speed SB is increased, and/or the blowing rotation time TBA is extended, as compared with the case of an open environment. This is because, when the installation environment 200 is a closed environment, dust and dirt are likely to accumulate in the outdoor heat exchanger 963 and its periphery, as compared with an open environment.
In addition, when the estimated environmental condition of the installation environment 200 is a closed environment, the outdoor unit cleaning operation control unit 20 sets the control parameters such that the outdoor unit cleaning operation cycle TC of the outdoor unit cleaning operation control unit 20 is shortened and/or the rotation speed of the compressor motor 952 is increased (the temperature of the outdoor heat exchanger 963 at the time of frost formation is decreased) as compared to the case of an open environment. This is because the outdoor heat exchanger 963 is easily contaminated when the installation environment 200 is a closed environment, as compared with an open environment.
The outdoor unit cleaning operation control unit 20 may set the control parameters such that the drying operation speed SC is increased as the estimated rear distance LRH is decreased and/or the drying rotation time TCA is increased. This is because it is estimated that the shorter the rear distance LRH is, the higher the ventilation resistance in the opposite direction is, and therefore, it is preferable to further promote the drying of the outdoor heat exchanger 963.
(operation when Fan is not driven)
As described above, the outdoor fan motor drive device 122 outputs the detection results of the current IF and the voltage VF even when the outdoor fan 965 is rotated by natural wind or the like, and the fan speed detection unit 12 detects the rotation speed SF based on these detection results. At this time, the environment estimation unit 14 calculates the power generation efficiency of the outdoor fan motor 966 based on the current IF, the voltage VF, and the rotation speed SF.
The power generation efficiency of the outdoor fan motor 966 corresponds to the drive efficiency when the outdoor fan motor 966 functions as a motor. Also, the power generation efficiency and the driving efficiency are lowered year by year due to aging. Therefore, the environment estimation unit 14 corrects the calculation results of the estimated forward distance LFH and the estimated backward distance LRH based on the calculated power generation efficiency. When the environment estimation routine (fig. 6) is executed in a state where strong natural wind is blown into the air conditioner 900, an error occurs in the estimated front distance LFH, the estimated rear distance LRH, or the estimated environmental condition. Therefore, the environment estimation routine (fig. 6) can be executed on the condition that the rotation speed of the outdoor fan motor 966 during non-driving is equal to or less than a predetermined value.
(Effect of the first embodiment)
As described above, according to the present embodiment, the control unit (10) includes: a surrounding environment estimation unit (12) that calculates, based on the physical quantities (IF, VF), evaluation values (LRH, LFH) that change in accordance with the distance between the outdoor unit casing (910) and the obstacles (210, 212); a fan motor rotation detection unit (12) that detects the rotational speed of a fan motor (966); and operation control units (16, 18, 20) that control the operation of the motor drive unit (122) or the compressor (950) on the basis of the evaluation values (LRH, LFH). This enables the outdoor unit of the air conditioner to be appropriately controlled based on the positional relationship between the outdoor unit and the surrounding obstacles.
Furthermore, the ambient estimation unit (12) calculates evaluation values (LRH, LFH) from physical quantities (IF, VF) when the blower fan (965) is rotated in the reverse direction at a predetermined first rotational speed (RS10), and the operation control unit (16, 18, 20) sets the rotational speeds (SB, SC) of the blower fan (965), the operating times (TBA, TCA) of the blower fan (965), or the rotational speed of the compressor (950) from the evaluation values (LRH, LFH). Thus, the operation control units (16, 18, 20) can appropriately set the rotation speeds (SB, SC) of the blower fan (965), the operation times (TBA, TCA) of the blower fan (965), or the rotation speed of the compressor (950).
The operation control units (16, 18, 20) rotate the blower fan (965) in the reverse direction for each of the predetermined periods (TB, TC), and set the lengths of the predetermined periods (TB, TC) based on the evaluation values (LRH, LFH). By rotating the blower fan (965) in the reverse direction in this way, highly accurate evaluation values (LRH, LFH) can be obtained.
The operation control units (16, 18, 20) rotate the blower fan (965) in the reverse direction at predetermined second rotational speeds (SB, SC) for predetermined periods (TB, TC) and set the second rotational speeds (SB, SC) based on the evaluation values (LRH, LFH). Thus, when the air blowing operation, the outdoor unit cleaning operation, or the like is performed, appropriate second rotation speeds (SB, SC) corresponding to the evaluation values (LRH, LFH) can be set.
The ambient estimation unit (12) calculates evaluation values (LRH, LFH) based on physical quantities (IF, VF) when the blower fan (965) is rotated at a predetermined third rotational speed (RS20) in the forward direction, in addition to physical quantities (IF, VF) when the blower fan (965) is rotated at a first rotational speed (RS10) in the reverse direction. Thus, appropriate evaluation values (LRH, LFH) can be calculated based on the physical quantities (IF, VF) in the forward direction and the reverse direction.
A fan motor rotation detection unit (12) detects the rotation Speed (SF) at which the blower fan (965) rotates when the blower fan (965) is not driven, and a surrounding environment estimation unit (14) detects the physical quantities (IF, VF) at which the blower fan (965) rotates when the blower fan (965) is not driven, and calculates evaluation values (LRH, LFH) based on the detected rotation Speed (SF) and the physical quantities (IF, VF). Thus, evaluation values (LRH, LFH) corresponding to the aging of the fan motor (966) and the like can be calculated.
(second embodiment)
(construction and operation of the second embodiment)
Next, a preferred air conditioner according to a second embodiment will be described.
The hardware configuration of the air conditioner according to the second embodiment is the same as that of the first embodiment (see fig. 1 and 2). However, as described below, the data structure and the contents of the environment estimation routine are different from those of the first embodiment (fig. 3 to 6).
First, in the first embodiment, the data storage unit 24 stores characteristic data (fig. 3 to 6) corresponding to the test-time reverse rotation speed RS10 (for example, 600rpm) and the test-time forward rotation speed RS20 (for example, 600 rpm). On the other hand, in the present embodiment, the data storage unit 24 stores characteristic data corresponding to the other test-time reverse rotation speed RS12 (fourth rotation speed) and test-time forward rotation speed RS22 (fifth rotation speed), in addition to the same characteristic data (fig. 3 to 6) as in the first embodiment. Here, the test reverse rotation speed RS12 is a rotation speed lower than the test reverse rotation speed RS10, and is, for example, 300 rpm. The test-time forward rotation speed RS22 is a rotation speed lower than the test-time forward rotation speed RS20, and is, for example, 300 rpm.
In the environment estimation routine (fig. 6) of the present embodiment, in step S2, the environment estimation unit 14 rotates the outdoor fan 965 in the reverse direction at the test-time reverse rotation speed RS10, and stores the current IF and the voltage VF at that time. Then, the environment estimating unit 14 rotates the outdoor fan 965 in the reverse direction at the test-time reverse rotation speed RS12, and stores the current IF and the voltage VF at that time.
In step S4, the environment estimation unit 14 calculates the power consumption PF of the outdoor fan motor 966 at the test reverse rotation speed RS10 (RS10), and calculates the power consumption PF at the test reverse rotation speed RS12 (RS 12). Then, the environment estimation unit 14 corrects the power consumption PF (RS10) based on the power consumption PF (RS12), and uses the correction result as the power consumption PF at the time of the reverse rotation applied in step S6.
Here, the reason why the power consumption PF (RS10) is corrected based on the power consumption PF (RS12) in step S4 will be described. The power consumption PF (RS10) during reverse rotation may be affected by the deterioration of the outdoor unit 960, the air pressure, the ambient temperature, the humidity, the natural wind blowing into the outdoor unit 960, and the like, and the typical characteristics shown in fig. 3 may change. The change generated in the power consumption PF (RS10) is difficult to detect only from the power consumption PF (RS 10). On the other hand, variations based on aging, air pressure, ambient temperature, humidity, natural wind, and the like also occur in the power consumption PF (RS12) at the reverse rotation speed RS12 at different tests. Therefore, by correcting the power consumption PF (RS10) based on the power consumption PF (RS12), a more accurate estimated rear distance LRH can be calculated in step S6.
In step S10, the environment estimation unit 14 rotates the outdoor fan 965 in the positive direction at the test-time positive rotation speed RS20, and stores the current IF and the voltage VF at that time. Then, the environment estimating unit 14 rotates the outdoor fan 965 in the positive direction at the test-time positive rotation speed RS22, and stores the current IF and the voltage VF at that time.
In step S12, the environment estimation unit 14 calculates the power consumption PF of the outdoor fan motor 966 at the test-time forward rotation speed RS20 (RS20), and calculates the power consumption PF at the test-time forward rotation speed RS22 (RS 22). Then, the environment estimation section 14 corrects the power consumption PF (RS20) based on the power consumption PF (RS22), and uses the correction result as the power consumption PF at the time of the forward rotation applied in step S16.
The reason why the power consumption PF (RS20) is corrected based on the power consumption PF (RS22) in step S12 is the same as that described for step S4. That is, according to the present embodiment, even when the typical characteristics shown in fig. 5 change due to aging, atmospheric pressure, ambient temperature, natural wind, or the like, it is possible to calculate the estimated forward distance LFH more accurately.
(Effect of the second embodiment)
As described above, according to the present embodiment, the ambient environment estimation unit (12) calculates the evaluation values (LRH, LFH) based on the physical quantities (IF, VF) when the blower fan (965) is rotated at the first rotational speed (RS10) in the reverse direction, and based on the physical quantities (IF, VF) when the blower fan (965) is rotated at the fourth rotational speed (RS12) slower than the first rotational speed (RS10) in the reverse direction. This can suppress the influence of aging, air pressure, ambient temperature, natural wind, and the like, and can calculate accurate evaluation values (LRH, LFH).
The ambient estimation unit (12) calculates evaluation values (LRH, LFH) based on physical quantities (IF, VF) when the blower fan (965) is rotated in the positive direction at a predetermined third rotational speed (RS20) and physical quantities (IF, VF) when the blower fan (965) is rotated in the positive direction at a fifth rotational speed (RS22) that is slower than the third rotational speed (RS20), and the operation control unit (16, 18, 20) sets the rotational speed of the blower fan (965), the operating time of the blower fan (965), or the rotational speed of the compressor (950) based on the evaluation values (LRH, LFH). Thus, the influence of aging, air pressure, ambient temperature, natural wind, and the like can be suppressed, and the accurate evaluation values (LRH, LFH) can be calculated, whereby the rotational speed of the blower fan (965), the operating time of the blower fan (965), or the rotational speed of the compressor (950) can be set more appropriately.
(third embodiment)
(construction and operation of the third embodiment)
Next, a preferred air conditioner according to a third embodiment will be described.
The hardware configuration and data configuration of the air conditioner according to the third embodiment are the same as those of the first embodiment (see fig. 1 to 5). In the present embodiment, the representative value A, B, C, D is defined as the values exemplified in the first embodiment, i.e., 50mm, 100mm, 150mm, and 200 mm. In the present embodiment, the outdoor unit 960 is provided under the conditions exemplified in the first embodiment, that is, "the rear distance LR of 50mm or more and the front distance LF of 800mm or more are ensured in the open environment, and the rear distance LR of 150mm or more and the front distance LF of 400mm or more is ensured in the closed environment".
Fig. 7 is a flowchart of an environment estimation routine executed by the outdoor unit control unit 10 according to the present embodiment. That is, in the present embodiment, the environment estimation routine shown in fig. 7 is applied instead of fig. 6.
When the process is started in fig. 7, in step S32, the environment estimation section 14 rotates the outdoor fan 965 in the reverse direction at the test-time reverse rotation speed RS 10. Next, when the process proceeds to step S34, the environment estimation unit 14 calculates the power consumption PF when the outdoor fan motor 966 rotates in the reverse direction, based on instantaneous values of the current IF and the voltage VF (see fig. 1).
Next, when the process advances to step S36, it is determined whether or not the power consumption PF and the predetermined power consumption PF2 satisfy the relationship "PF ≦ PF 2". Here, the "predetermined power consumption PF 2" is the power consumption PF2 shown in fig. 3, and is power consumption corresponding to a representative value C (150 mm) of the rear distance LR. Therefore, in step S36, it is determined whether or not the shortest rear distance LR (═ 150mm) necessary for the closed environment is ensured.
If it is determined as no in step S36, it is estimated that the rear distance LR is shorter than the minimum value (150 mm) in the closed environment, and therefore it is estimated that the installation environment 200 is an open environment, and the process proceeds to step S46. In step S46, the normal operation control unit 16, the blowing operation control unit 18, and the outdoor unit cleaning operation control unit 20 set control parameters corresponding to "open environment", and the process of this routine ends. The specific setting contents of the control parameters are the same as those described for the "open environment" in the first embodiment.
On the other hand, if it is determined as yes in step S36 of fig. 7, the process proceeds to step S38, and the environment estimation unit 14 rotates the outdoor fan 965 in the positive direction at the test-time positive rotation speed RS 20. Next, when the process proceeds to step S40, the environment estimation unit 14 calculates the power consumption PF when the outdoor fan motor 966 is rotating in the forward direction, based on instantaneous values of the current IF and the voltage VF (see fig. 1).
Subsequently, when the process proceeds to step S42, it is determined whether or not the power consumption PF and the predetermined power consumption PF4 satisfy the relationship "PF ≧ PF 4". Here, the "predetermined power consumption PF 4" is the power consumption PF4 shown in fig. 5, and is "power consumption in which the front distance LF becomes LF6 when the rear distance LR is assumed to be the representative value C". The front distance LF6 corresponds to the shortest front distance LF to be ensured in an open environment, that is, "800 mm".
Therefore, in step S42, it is determined whether a condition that "the front distance LF is shorter than 800mm when the rear distance LR is assumed to be the representative value C (═ 150 mm)" is satisfied. If it is determined as yes in step S42, the process proceeds to step S44, and the normal operation control unit 16, the blowing operation control unit 18, and the outdoor unit cleaning operation control unit 20 set control parameters corresponding to the "closed environment", and the process of this routine is ended. The specific setting contents of the control parameters are the same as those described for the "closed environment" in the first embodiment. On the other hand, if it is determined as no in step S42, the process proceeds to step S46, and control parameters corresponding to "open environment" are set.
(Effect of the third embodiment)
As described above, according to the present embodiment, as in the first embodiment, the control parameters can be set based on the estimated environmental conditions of the open environment or the closed environment. Further, according to the environment estimation routine (fig. 7) of the present embodiment, the estimated environment condition can be obtained by a simpler process than that of the first embodiment (fig. 6).
(modification example)
The present invention is not limited to the above-described embodiments, and various modifications are possible. The above-described embodiments are merely exemplary embodiments for easily understanding the present invention, and are not limited to having all the configurations described. In addition, a part of the structure of one embodiment may be replaced with the structure of another embodiment, and the structure of another embodiment may be added to the structure of one embodiment. Further, a part of the configuration of each embodiment may be deleted, or another configuration may be added or replaced. The control lines and information lines shown in the drawings are portions that are considered necessary for the description, and are not limited to those showing all the control lines and information lines necessary for the product. In practice, almost all structures can be considered to be connected to each other. For example, the above embodiment can be modified as follows.
(1) Since the hardware of the outdoor unit control unit 10 in each of the above embodiments can be realized by a general computer, a program or the like for executing the flowcharts shown in fig. 6 and 7 and the other various processes can be stored in a storage medium or distributed via a transmission path.
(2) The processing shown in fig. 6 and 7 and the other processing described above are described as software processing using a program in the above embodiment, but a part or all of the processing may be replaced with hardware processing using an ASIC (Application Specific Integrated Circuit; Application Specific IC) or FPGA (Field Programmable Gate Array), or the like.
(3) In the third embodiment, the outdoor fan 965 is rotated at the test-time reverse rotation speed RS10 in the reverse direction and at the test-time forward rotation speed RS20 in the forward direction, and the power consumption PF during the reverse rotation and the forward rotation is determined. However, as in the second embodiment, the power consumption PF during the reverse rotation and the forward rotation may be determined by rotating the outdoor fan 965 at the test-time reverse rotation speeds RS10 and RS12 in the reverse direction and at the test-time forward rotation speeds RS20 and RS22 in the forward direction.
Description of reference numerals
10 outdoor machine control part (control part, computer)
12 Fan speed detecting part (Fan Motor rotation detecting part, Fan Motor rotating Unit)
14 Environment estimating part (ambient environment estimating part, ambient environment estimating means)
16 normal operation control part (operation control part, operation control means)
18 blower operation control part (operation control part, operation control unit)
20 outdoor machine cleaning operation control part (operation control part, operation control unit)
122 outdoor fan motor driving device (Motor driving part)
210 rear wall (obstacle)
212 front wall (obstacle)
900 air conditioner
910 outer casing (outdoor machine outer casing)
950 compressor
952 compressor motor (compressor motor)
963 outdoor heat exchanger
965 outdoor fan (blowing fan)
966 outdoor fan motor (Motor for fan)
IF current (physical quantity)
SB blowing rotation speed (rotation speed, second rotation speed)
SC drying operation speed (rotation speed, second rotation speed)
SF rotation speed
TB running period of air blowing (predetermined period)
TC outdoor machine cleaning operation period (predetermined period)
VF voltage (physical quantity)
LFH estimation of Forward distance (evaluation value)
LRH estimates rear distance (evaluation value)
TBA air-blowing rotation time (running time)
TCA Dry spin time (run time)
Reverse rotation speed (first rotation speed) at RS10 test
Reverse rotation speed (fourth rotation speed) at RS12 test
Forward rotation speed (third rotation speed) at RS20 test
RS22 forward rotational speed (fifth rotational speed) at the time of test.
Claims (10)
1. An air conditioner is characterized by comprising:
an outdoor heat exchanger provided inside the outdoor unit casing and having heat-exchanging fins;
a compressor which is provided with a compressor motor and compresses a refrigerant for heat exchange;
a blower fan that blows air to the outdoor heat exchanger;
a fan motor for driving the blower fan;
a motor drive unit that supplies electric power to the fan motor and detects a physical quantity of the fan motor; and
a control unit for controlling the motor drive unit,
the control unit includes:
a surrounding environment estimation unit that calculates an evaluation value that changes according to a distance between the outdoor unit casing and an obstacle, based on the physical quantity;
a fan motor rotation detection unit that detects a rotation speed of the fan motor; and
and an operation control unit that controls operation of the motor drive unit or the compressor based on the evaluation value.
2. The air conditioner according to claim 1,
the fan motor drives the air supply fan in either a forward direction in which air flows from the outdoor heat exchanger to the air supply fan or a reverse direction in which air flows from the air supply fan to the outdoor heat exchanger,
the surrounding environment estimating unit calculates the evaluation value based on the physical quantity when the blower fan is rotated at a predetermined first rotational speed in a reverse direction,
the operation control unit sets a rotation speed of the blower fan, an operation time of the blower fan, or a rotation speed of the compressor based on the evaluation value.
3. The air conditioner according to claim 2,
the operation control unit rotates the blower fan at a predetermined second rotation speed in the reverse direction for each predetermined period, and sets the length of the predetermined period based on the evaluation value.
4. The air conditioner according to claim 2,
the operation control unit rotates the blower fan at a predetermined second rotation speed in the reverse direction for each predetermined period, and sets the second rotation speed based on the evaluation value.
5. An air conditioner according to claim 2,
the surrounding environment estimation unit calculates the evaluation value based on the physical quantity when the blower fan is rotated at a predetermined third rotation speed in addition to the physical quantity when the blower fan is rotated at the first rotation speed in the reverse direction.
6. The air conditioner according to claim 2,
the ambient environment estimation unit calculates the evaluation value based on the physical quantity when the blower fan is rotated at a fourth rotational speed slower than the first rotational speed in addition to the physical quantity when the blower fan is rotated at the first rotational speed in the reverse direction.
7. The air conditioner according to claim 1,
the fan motor drives the blower fan in either a forward direction in which air flows from the outdoor heat exchanger to the blower fan or a reverse direction in which air flows from the blower fan to the outdoor heat exchanger,
the surrounding environment estimation unit calculates the evaluation value based on the physical quantity when the blower fan is rotated at a predetermined third rotational speed in the positive direction and the physical quantity when the blower fan is rotated at a fifth rotational speed slower than the third rotational speed in the positive direction,
the operation control unit sets a rotation speed of the blower fan, an operation time of the blower fan, or a rotation speed of the compressor based on the evaluation value.
8. The air conditioner according to claim 1,
the fan motor rotation detection unit detects the rotation speed of the blower fan when the blower fan is rotating without being driven,
the ambient environment estimation unit detects the physical quantity when the blower fan is rotating when the blower fan is not driven, and calculates the evaluation value from the detected rotational speed and the physical quantity.
9. An air conditioner control method applied to an air conditioner, the air conditioner comprising:
an outdoor heat exchanger provided inside the outdoor unit casing and having heat-exchanging fins;
a compressor which is provided with a compressor motor and compresses a refrigerant for heat exchange;
a blower fan that blows air to the outdoor heat exchanger;
a fan motor for driving the blower fan;
a motor drive unit that supplies electric power to the fan motor and detects a physical quantity of the fan motor; and
a control unit for controlling the motor drive unit,
it is characterized in that the preparation method is characterized in that,
the air conditioner control method comprises the following processes:
the control section calculates an evaluation value that changes according to a distance between the outdoor unit casing and an obstacle based on the physical quantity;
the control unit detects a rotational speed of the fan motor; and
the control unit controls the operation of the motor drive unit or the compressor based on the evaluation value.
10. A program applied to an air conditioner, the air conditioner comprising:
an outdoor heat exchanger provided inside the outdoor unit casing and having heat-exchanging fins;
a compressor which is provided with a compressor motor and compresses a refrigerant for heat exchange;
a blower fan that blows air to the outdoor heat exchanger;
a fan motor for driving the blower fan;
a motor drive unit that supplies electric power to the fan motor and detects a physical quantity of the fan motor; and
a computer for controlling the motor driving part,
it is characterized in that the preparation method is characterized in that,
the program causes the computer to function as:
a surrounding environment estimation unit that calculates an evaluation value that changes according to a distance between the outdoor unit casing and an obstacle based on the physical quantity;
a fan motor rotation detection unit that detects a rotation speed of the fan motor; and
and an operation control means for controlling the operation of the motor drive unit or the compressor based on the evaluation value.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2019/041560 WO2021079439A1 (en) | 2019-10-23 | 2019-10-23 | Air conditioner, and control method for air conditioner and program |
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| Publication Number | Publication Date |
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| CN114502895A true CN114502895A (en) | 2022-05-13 |
| CN114502895B CN114502895B (en) | 2023-04-14 |
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| Country | Link |
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| JP (1) | JP6704552B1 (en) |
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| WO (1) | WO2021079439A1 (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08313011A (en) * | 1995-05-19 | 1996-11-29 | Sanyo Electric Co Ltd | Method for determining arranging condition of outdoor device in air conditioner |
| CN105980784A (en) * | 2014-03-28 | 2016-09-28 | 江森自控日立空调技术（香港）有限公司 | air conditioner |
| CN107250679A (en) * | 2015-02-18 | 2017-10-13 | 三菱电机株式会社 | Conditioner |
| CN108431528A (en) * | 2016-01-12 | 2018-08-21 | 三菱电机株式会社 | Air conditioner |
| CN108700321A (en) * | 2017-02-06 | 2018-10-23 | 日立江森自控空调有限公司 | Outdoor unit, air conditioner and the air conditioning managing method of air conditioner |
-
2019
- 2019-10-23 JP JP2020507131A patent/JP6704552B1/en active Active
- 2019-10-23 WO PCT/JP2019/041560 patent/WO2021079439A1/en active Application Filing
- 2019-10-23 CN CN201980101190.7A patent/CN114502895B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08313011A (en) * | 1995-05-19 | 1996-11-29 | Sanyo Electric Co Ltd | Method for determining arranging condition of outdoor device in air conditioner |
| CN105980784A (en) * | 2014-03-28 | 2016-09-28 | 江森自控日立空调技术（香港）有限公司 | air conditioner |
| CN107250679A (en) * | 2015-02-18 | 2017-10-13 | 三菱电机株式会社 | Conditioner |
| CN108431528A (en) * | 2016-01-12 | 2018-08-21 | 三菱电机株式会社 | Air conditioner |
| CN108700321A (en) * | 2017-02-06 | 2018-10-23 | 日立江森自控空调有限公司 | Outdoor unit, air conditioner and the air conditioning managing method of air conditioner |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114502895B (en) | 2023-04-14 |
| WO2021079439A1 (en) | 2021-04-29 |
| JPWO2021079439A1 (en) | 2021-11-25 |
| JP6704552B1 (en) | 2020-06-03 |
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