WO2018142817A1 - 空気調和機 - Google Patents

空気調和機 Download PDF

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Publication number
WO2018142817A1
WO2018142817A1 PCT/JP2017/046695 JP2017046695W WO2018142817A1 WO 2018142817 A1 WO2018142817 A1 WO 2018142817A1 JP 2017046695 W JP2017046695 W JP 2017046695W WO 2018142817 A1 WO2018142817 A1 WO 2018142817A1
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WO
WIPO (PCT)
Prior art keywords
air
temperature
suppression control
cold air
indoor
Prior art date
Application number
PCT/JP2017/046695
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
貴裕 仲田
智春 芦澤
Original Assignee
ダイキン工業株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ダイキン工業株式会社 filed Critical ダイキン工業株式会社
Priority to AU2017397385A priority Critical patent/AU2017397385B2/en
Priority to CN201780085486.5A priority patent/CN110249187B/zh
Priority to EP17895231.3A priority patent/EP3578897B1/en
Publication of WO2018142817A1 publication Critical patent/WO2018142817A1/ja

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Classifications

    • 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
    • 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
    • F24F1/0007—Indoor units, e.g. fan coil units
    • 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
    • F24F11/75—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 for maintaining constant air flow rate or air velocity
    • 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
    • F24F11/79—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling the direction of the supplied air

Definitions

  • the present invention relates to an air conditioner, and more particularly to an air conditioner that performs heating using a vapor compression refrigeration cycle.
  • Patent Document 1 if the amount of blown air is limited at the start of heating operation, an increase in the indoor temperature is suppressed, and it takes time to warm the room.
  • An object of the present invention is to suppress a feeling of cold air and promote an increase in room temperature in an air conditioner that performs heating using a vapor compression refrigeration cycle.
  • An air conditioner blows indoor air that exchanges heat between refrigerant and room air in a vapor compression refrigeration cycle, and conditioned air heat-exchanged by the indoor heat exchanger into the room.
  • a first cool air suppression control that restricts the air flow of the indoor fan until the temperature of the indoor heat exchanger reaches the first temperature at the start of heating
  • second cold air suppression control for releasing the restriction on the air volume of the indoor fan when the second temperature lower than the first temperature is reached.
  • the first cool air suppression control for limiting the air volume of the indoor fan until the temperature of the indoor heat exchanger reaches the first temperature, and the temperature of the indoor heat exchanger is lower than the first temperature. Since it has the 2nd cold wind suppression control which cancels
  • An air conditioner according to a second aspect of the present invention is an air conditioner according to the first aspect, wherein the first cold air suppression control and the second cold air suppression control are selected according to a preset selection condition. It is.
  • the first cold air suppression control and the second cold air suppression control are selected according to the selection conditions, the first cold air suppression control is selected in a situation where priority is given to suppression of the cool air feeling.
  • the selection condition can be set in advance so that the second cold air suppression control is selected in a situation where priority is given to promoting the increase in room temperature.
  • the selection condition is that the difference between the target room temperature and the room temperature is greater than a threshold, and the second cold air suppression control is selected. Including as a condition for.
  • the selection condition includes a condition that the temperature difference between the target room temperature and the room temperature is larger than the threshold value as a condition for selecting the second cold air suppression control, the temperature difference is small.
  • the second cold air suppression control is not performed.
  • the air conditioner which concerns on the 4th viewpoint of this invention is a flap comprised so that the blowing direction of the conditioned air which blows off from an indoor fan can be swung in the air conditioner which concerns on a 2nd viewpoint or a 3rd viewpoint.
  • the selection condition includes a condition that the flap is not swinging as a condition for selecting the second cold air suppression control.
  • the selection condition includes a condition that the flap is not swinging as a condition for selecting the second cold air suppression control. Since the second cold air suppression control is not performed when the air is blown out, even if the second cold air suppression control is performed when the user is in the room, direct exposure of the conditioned air to the user can be suppressed. In addition, if the swing is stopped to select the second cold air suppression control, there is a high possibility of causing a user's misunderstanding that a failure has occurred, but such misunderstanding can be prevented.
  • An air conditioner according to a fifth aspect of the present invention is such that, in the air conditioner according to any one of the second to fourth aspects, it is possible to change the upward and downward blowing of conditioned air blown from the indoor fan.
  • the selection condition includes a condition that the horizontal flap is directed above a predetermined angle as a condition for selecting the second cold air suppression control.
  • the selection condition includes a condition that the horizontal flap is directed above a predetermined angle as a condition for selecting the second cold air suppression control
  • the predetermined angle Since the second cold air suppression control is not performed at the following times, the second cold air suppression control is performed when the user is in the room by setting the predetermined angle so that the conditioned air does not hit the user in the room. Even if it is performed, it is possible to prevent the conditioned air from directly hitting the user.
  • the air conditioner according to a sixth aspect of the present invention is the air conditioner according to the fifth aspect, wherein the selection condition is that the predetermined angle of the horizontal flap is such that the conditioned air is blown above the horizontal direction or the horizontal direction. It is an angle.
  • the second cold air suppression control is performed when the user is in the room. Even if it is performed, it can suppress that conditioned air hits a user directly.
  • the air conditioner according to a seventh aspect of the present invention is the air conditioner according to the fifth aspect, wherein the selection condition is that the predetermined angle of the horizontal flap is an angle along which the blown conditioned air is along the ceiling. is there.
  • the air conditioner according to the seventh aspect when the second cold air suppression control is performed, the blown conditioned air runs along the ceiling, so that the second cold air suppression control is performed when the standing user is in the room. Moreover, it can suppress that conditioned air hits a user directly.
  • An air conditioner according to an eighth aspect of the present invention is the air conditioner according to any one of the first to seventh aspects, wherein the temperature of the indoor heat exchanger becomes a third temperature lower than the second temperature.
  • the third cool air suppression control for releasing the restriction on the air volume of the indoor fan is further provided.
  • the air conditioner according to the eighth aspect further includes the third cold air suppression control for releasing the restriction on the air volume of the indoor fan when the temperature of the indoor heat exchanger becomes the third temperature lower than the second temperature, In a situation where priority is given to promoting the increase in room temperature over the second cold air suppression control, the room temperature can be quickly increased using the third cold air suppression control.
  • the air conditioner according to the first aspect of the present invention it is possible to suppress the cool air feeling and promote the increase in room temperature.
  • the air conditioner according to the second aspect of the present invention it is possible to easily realize the suppression of the cool air feeling and the promotion of the room temperature rise.
  • the air conditioner according to the third aspect of the present invention it is possible to improve the effect of suppressing the cool air feeling by not performing the second cool air suppression control when the room is already warm and the necessity of quickly heating the room is small.
  • the air conditioner according to the fourth aspect of the present invention in the second cold air suppression control, it is possible to suppress the movement of the flap that is mistaken as a failure and the movement of the flap that increases the cold air feeling.
  • the function of suppressing the feeling of cold air can be improved.
  • the function of promoting the increase in room temperature is improved.
  • the perspective view which shows the external appearance of the air conditioner which concerns on embodiment.
  • the block diagram which shows the outline
  • the conceptual diagram which showed the room
  • the flowchart for demonstrating 1st cold wind suppression control and 2nd cold wind suppression control The flowchart for demonstrating the 2nd cold wind suppression control in the modification 1A, and the 3rd cold wind suppression control.
  • FIG. 1 An air conditioner 1 shown in FIG. 1 includes an indoor unit 3 attached to an indoor wall surface WL and the like, and an outdoor unit 2 installed outdoors.
  • the outdoor unit 2 is indicated by a broken line because the outdoor unit 2 is outside the indoor unit 3 with the wall surface WL interposed therebetween.
  • FIG. 2 shows a circuit configuration of the air conditioner 1.
  • the air conditioner 1 includes a refrigerant circuit 10 and can perform a vapor compression refrigeration cycle by circulating the refrigerant in the refrigerant circuit 10.
  • the indoor unit 3 and the outdoor unit 2 are connected by a communication pipe 4.
  • the air conditioner 1 includes a control unit 50 for controlling internal devices.
  • a remote controller 5 is attached to the air conditioner 1, and the remote controller 5 has a function of communicating with the control unit 50 using, for example, infrared rays. The user can make various settings for the air conditioner 1 using the remote controller 5.
  • the refrigerant circuit 10 includes a compressor 11, an outdoor heat exchanger 13, an expansion mechanism 14, an accumulator 15, and an indoor heat exchanger 16.
  • the compressor 11 sucks the refrigerant from the suction port, and discharges the refrigerant compressed inside to the indoor heat exchanger 16 from the discharge port.
  • the compressor 11 is a variable capacity inverter compressor that performs rotational speed control by an inverter.
  • the refrigerant circulation amount increases as the operation frequency of the compressor 11 increases, and conversely, the refrigerant circulation amount decreases as the operation frequency decreases.
  • the outdoor heat exchanger 13 is connected to the intake port of the compressor 11 via the accumulator 15.
  • the outdoor heat exchanger 13 causes heat exchange between the refrigerant flowing through a heat transfer tube (not shown) connected between the second entrance and the first entrance of the outdoor heat exchanger 13 and the outdoor air.
  • the expansion mechanism 14 is disposed between the outdoor heat exchanger 13 and the indoor heat exchanger 16.
  • the expansion mechanism 14 has a function of expanding and depressurizing the refrigerant flowing between the outdoor heat exchanger 13 and the indoor heat exchanger 16.
  • the expansion mechanism 14 is configured to be able to change the opening, and by reducing the opening, the flow path resistance of the refrigerant passing through the expansion mechanism 14 increases, and by expanding the opening, the expansion mechanism 14 expands. The flow path resistance of the refrigerant passing through the mechanism 14 is reduced.
  • Such an expansion mechanism 14 expands and depressurizes the refrigerant flowing from the indoor heat exchanger 16 toward the outdoor heat exchanger 13 during the heating operation. Even if the state of other devices attached to the refrigerant circuit 10 does not change, the flow rate of the refrigerant flowing through the refrigerant circuit 10 changes when the opening degree of the expansion mechanism 14 changes.
  • the indoor heat exchanger 16 has a second inlet / outlet for circulating liquid refrigerant to / from the expansion mechanism 14 and has a first inlet / outlet for circulating gas refrigerant to / from the discharge port of the compressor 11. is doing.
  • the indoor heat exchanger 16 exchanges heat between the refrigerant flowing through the heat transfer pipe 16b (see FIG. 3) connected between the second entrance and the first entrance of the indoor heat exchanger 16 and the room air. .
  • An accumulator 15 is disposed between the outdoor heat exchanger 13 and the suction port of the compressor 11.
  • the refrigerant flowing from the outdoor heat exchanger 13 to the compressor 11 is separated into a gas refrigerant and a liquid refrigerant.
  • a gas refrigerant is mainly supplied from the accumulator 15 to the suction port of the compressor 11.
  • the outdoor unit 2 includes an outdoor fan 21 that generates an airflow of outdoor air that passes through the outdoor heat exchanger 13 in order to promote heat exchange between the refrigerant flowing through the heat transfer tubes and the outdoor air.
  • the outdoor fan 21 is driven by an outdoor fan motor 21a that can change the rotational speed.
  • the indoor unit 3 includes an indoor fan 31 that generates an air flow of indoor air passing through the indoor heat exchanger 16 in order to promote heat exchange between the refrigerant flowing through the heat transfer tube 16b and the indoor air.
  • the indoor fan 31 is driven by an indoor fan motor 31a whose rotation speed can be changed.
  • the indoor unit 3 includes a casing 61, an air filter 62, and a plurality of components in addition to the indoor heat exchanger 16 and the indoor fan 31 described above.
  • a vertical flap 63 and horizontal flaps 64 and 65 are provided.
  • the casing 61 is elongated in the longitudinal direction (hereinafter also referred to as the left-right direction) and has a box shape having a plurality of openings.
  • a suction port 71 is provided in the top surface portion of the casing 61.
  • the room air taken in from the suction port 71 passes through the air filter 62 provided on the top surface portion of the casing 61, passes through the indoor heat exchanger 16, and is sent to the indoor fan 31.
  • An air outlet 72 is formed on the bottom surface of the casing 61.
  • the air outlet 72 is connected to the inside of the casing 61 by a scroll flow path 72 b that continues from the indoor fan 31.
  • the room air sucked from the suction port 71 is heat-exchanged by the indoor heat exchanger 16, and then blown out from the blowout port 72 to the room RS through the scroll flow path 72b.
  • a flow path lower surface 72a is provided on the rear side of the scroll flow path 72b. The cross-sectional shape of the flow path lower surface 72a draws a curve that moves away from the center of rotation of the indoor fan 31 as it turns.
  • the air outlet 72 is provided with two horizontal flaps 64, 65 extending in the left-right direction. These horizontal flaps 64 and 65 are rotatably attached to the casing 61.
  • the horizontal flaps 64 and 65 are configured to be able to rotate around respective rotation centers extending left and right independently by horizontal flap driving motors 37 provided for the horizontal flaps 64 and 65, respectively.
  • These horizontal flap drive motors 37 are controlled by an indoor control device 35 (see FIG. 4) provided in the indoor unit 3. And these horizontal flaps 64 and 65 adjust the wind direction of the up-down direction of the air which blows off from the blower outlet 72 independently or in cooperation with each other.
  • a plurality of vertical flaps 63 having a plane intersecting the left and right direction are provided in the back of the blowout port 72.
  • a vertical flap driving motor 38 (see FIG. 4) is configured so that the vertical flap 63 can be turned left and right around a rotation center extending in the up and down direction (direction intersecting the left and right direction).
  • the vertical flap driving motor 38 that drives the vertical flap 63 is also controlled by the indoor control device 35.
  • the plurality of vertical flaps 63 adjust the wind direction of the air blown from the air outlet 72 to the left and right.
  • the indoor heat exchanger 16 includes a plurality of fins 16a and a plurality of heat transfer tubes 16b penetrating the plurality of fins 16a.
  • the indoor heat exchanger 16 functions as an evaporator or a radiator according to the operation state of the indoor unit 3, and exchanges heat between the refrigerant flowing through the heat transfer pipe 16 b and the air passing through the indoor heat exchanger 16. Let it be done.
  • the indoor heat exchanger 16 comprised by the fin 16a and the heat exchanger tube 16b is demonstrated here, the indoor heat exchanger 16 used by this invention is restricted to a fin and tube type heat exchanger.
  • a heat exchanger using a flat multi-hole tube instead of the heat transfer tube 16b may be used.
  • the indoor fan 31 is located at a substantially central portion inside the casing 61.
  • the indoor fan 31 is a cross flow fan having a substantially cylindrical shape elongated in the longitudinal direction (left-right direction) of the indoor unit 3.
  • the indoor fan 31 is rotationally driven, the conditioned air generated by passing through the indoor heat exchanger 16 after the indoor air is sucked from the suction port 71 and passes through the air filter 62 passes through the air outlet 72 into the room. It is blown out to RS.
  • the indoor fan 31 rotates in accordance with the rotational speed of the indoor fan motor 31a, and the amount of conditioned air blown from the outlet 72 increases as the rotational speed increases.
  • the control unit 50 includes an outdoor control device 26 built in the outdoor unit 2 and a room built in the indoor unit 3. And a control device 35.
  • the outdoor control device 26 and the indoor control device 35 are connected to each other through signal lines, and are configured to be able to transmit and receive signals to each other.
  • the outdoor control device 26 of the outdoor unit 2 controls the compressor 11, the expansion mechanism 14, the outdoor fan 21, and the like. Therefore, the outdoor unit 2 includes an outdoor temperature sensor 22 for measuring the temperature of the outdoor air, an outdoor heat exchanger temperature sensor 23 for measuring the temperature of the refrigerant flowing in a specific place of the outdoor heat exchanger 13, and A discharge pipe temperature sensor 24 for detecting the temperature of the refrigerant discharged from the compressor 11 and a suction pipe temperature sensor 25 for detecting the temperature of the gas refrigerant sucked into the compressor 11 are provided.
  • the outdoor control device 26 is connected to the outdoor temperature sensor 22 to the suction pipe temperature sensor 25 in order to receive a signal related to the temperature measured by the outdoor temperature sensor 22 to the suction pipe temperature sensor 25.
  • the outdoor control device 26 includes, for example, a CPU (not shown) and a memory 26a, and is configured to be able to control the outdoor unit 2 in accordance with a program stored in the memory 26a.
  • the indoor control device 35 of the indoor unit 3 controls the indoor fan 31 and the like.
  • the indoor unit 3 includes a room temperature sensor 32 for measuring the temperature of the indoor air, and an indoor heat exchanger temperature sensor 33 for measuring the temperature of the refrigerant flowing in a specific place of the indoor heat exchanger 16. I have.
  • the indoor control apparatus 35 is connected to the room temperature sensor 32 and the indoor heat exchanger temperature sensor 33 in order to receive the signal regarding the temperature which the room temperature sensor 32 and the indoor heat exchanger temperature sensor 33 measured.
  • the indoor control device 35 includes, for example, a CPU (not shown) and a memory 35a, and can control the indoor unit 3 according to a program stored in the memory 35a.
  • the remote controller 5 has a liquid crystal display device 5a and a button 5b shown in FIG.
  • the user can operate these switches using the buttons 5b corresponding to the operation switch 51, the temperature setting switch 52, the wind direction setting switch 53, the air volume setting switch 54, and the like shown in FIG.
  • the operation switch 51 is a switch for switching between the operation and the stop of the air conditioner 1, and the operation and the stop are alternately switched every time the operation switch 51 is operated.
  • the temperature setting switch 52 is a switch used to input a room temperature desired by the user.
  • the wind direction setting switch 53 is a switch for performing settings related to the wind direction.
  • the air volume setting switch 54 is a switch used for inputting the air volume.
  • the control unit 50 sets the target room temperature Tt based on the set temperature Ts input using the temperature setting switch 52.
  • a temperature (Ts + ⁇ 1) obtained by adding a constant value ⁇ 1 to the set temperature Ts is set as the target room temperature Tt.
  • the target room temperature Tt may be a temperature (Ts + ⁇ 1) obtained by adding the value ⁇ 1 calculated according to the predetermined function f1 (x) to the set temperature Ts. If the room temperature Tr becomes higher than the target room temperature Tt, the control unit 50 causes the air conditioner 1 to be thermo-off.
  • the control unit 50 causes the air conditioner 1 to be thermo-on.
  • the controller 50 causes the air conditioner 1 to be thermo-ON. It may be set as follows. In the thermo-on state, the compressor 11 is driven and there is heat transfer by the refrigerant, but in the thermo-off state, the compressor 11 is stopped and the heat transfer by the refrigerant is stopped.
  • the control unit 50 controls various devices constituting the air conditioner 1 based on the measurement values of the various sensors as described above and the commands input from the remote controller 5. Further, the control unit 50 notifies the user of the state of the input command and the state of control using the liquid crystal display device 5a of the remote controller 5.
  • the indoor unit 3 can set, for example, wind directions called “front blow”, “right blow”, and “left blow” in the left-right direction. For example, if the wind direction of “front blowing” is selected, the conditioned air is blown forward by stopping at a position where the vertical flap 63 extends in the front-rear direction. When the wind direction of “right blow” is selected, the vertical flap 63 stops at a position inclined to the right, and conditioned air is blown out toward the right direction.
  • the indoor unit 3 is configured to be able to select, for example, wind directions called “ceiling airflow”, “upward blowing”, “downward blowing”, and “vertical airflow” in the vertical direction.
  • the indoor unit 3 directs the tips of the horizontal flaps 64 and 65 to the top and the arrow Ar1 in FIG. 3 from the outlet 72 so that the conditioned air flows along the ceiling CE. Blow out conditioned air in the direction indicated by.
  • the indoor unit 3 When the “upward blowing” wind direction is selected, the indoor unit 3 slightly lowers the tip from the position of the horizontal flaps 64 and 65 in the case of the “ceiling airflow” wind direction, which is indicated by an arrow Ar2 in FIG. Thus, the conditioned air is blown out in a direction directed upward from the horizontal direction.
  • the indoor unit 3 blows out conditioned air below the horizontal direction.
  • the indoor unit 3 causes the conditioned air to flow along the wall surface WL with the tips of the horizontal flaps 64 and 65 facing down as shown in FIG. Blow out harmonious air.
  • the airflow indicated by the arrow Ar2 is an example of the airflow generated when the airflow direction of “upward blowing” is selected.
  • the airflow indicated by the arrow Ar3 is an example of an airflow generated when the “downward blowing” wind direction is selected, and the airflow indicated by the arrow Ar4 is an example of an airflow generated when the “vertical airflow” wind direction is selected.
  • the method of setting the wind direction that can be selected in the up and down direction is not limited to this example.
  • the wind direction setting switch 53 of the remote controller 5 can be used to select a state in which the vertical flap 63 swings. Further, the state in which the horizontal flaps 64 and 65 swing can be selected by the wind direction setting switch 53 of the remote controller 5. Furthermore, it is possible to select a state in which the vertical flap 63 and the horizontal flaps 64 and 65 swing together.
  • Air volume adjustment There are two types of air volume adjustment modes: automatic setting and manual setting.
  • the control unit 50 automatically sets the air volume according to the program stored in the memory 35a.
  • the manual setting mode the user can set, for example, five different air volumes using the air volume setting switch 54 of the remote controller 5.
  • the first air volume, the second air volume, the third air volume, the fourth air volume, and the fifth air volume are referred to in order from the smallest air volume.
  • the indoor heat exchanger 16 functions as a radiator. Therefore, as the refrigerant flows through the indoor heat exchanger 16, the refrigerant warms the indoor air by heat exchange with the indoor air and cools itself by releasing heat. The low-temperature and high-pressure refrigerant deprived of the temperature by the indoor heat exchanger 16 is decompressed by the expansion mechanism 14 to be changed to a low-temperature and low-pressure refrigerant. The refrigerant that has flowed into the outdoor heat exchanger 13 via the expansion mechanism 14 is warmed by heat exchange with outdoor air. At this time, the outdoor heat exchanger 13 functions as an evaporator. Then, mainly low-temperature gas refrigerant is sucked into the compressor 11 from the outdoor heat exchanger 13 through the accumulator 15.
  • the suppression control will be described along the flowchart of FIG.
  • the control unit 50 determines whether or not the first start condition is satisfied (Step S2). .
  • the first start condition is a condition for determining whether to enter the cold air suppression control of the first cold air suppression control or the second cold air suppression control. If the first start condition is not satisfied, neither the first cold air suppression control nor the second cold air suppression control is performed.
  • the second start condition is a condition for determining whether to perform the first cold air suppression control or the second cold air suppression control. The contents of the first start condition and the second start condition will be described later.
  • step S4 the second cold air suppression control (step S4) is entered to limit the air volume. Normally, after entering the second cold air suppression control, the first start condition and the second start condition are not changed. Therefore, until the temperature of the indoor heat exchanger 16 reaches the second temperature, step S2, The operation of the loop of S3, S4 and S5 is repeated, and the second cold air suppression control is continued. And if the temperature of the indoor heat exchanger 16 reaches 2nd temperature, it will progress from step S5 to step S6, and the air volume restriction
  • step S7 the first cold air suppression control (step S7) is entered to limit the air volume. Normally, after entering the first cold air suppression control, the first start condition and the second start condition are not changed. Therefore, until the temperature of the indoor heat exchanger 16 reaches the first temperature, step S2, The loop operations of S3, S7, and S8 are repeated. And if the temperature of the indoor heat exchanger 16 reaches 1st temperature, it will progress from step S8 to step S6, and the air volume restriction
  • step S9 the controller 50 determines whether or not the room temperature Tr measured by the room temperature sensor 32 exceeds a threshold temperature Th near the set temperature Ts.
  • the setting of the threshold temperature Th is a design matter, for example, the threshold temperature Th is set to a value lower by ⁇ degrees than the set temperature Ts. In this case, when satisfying Tr> (Ts ⁇ ), the control unit 50 cancels the cold air suppression control (step S10) and ends the cold air suppression control routine.
  • the temperature of the indoor heat exchanger 16 gradually increases. However, the temperature of the indoor heat exchanger 16 may decrease before the target room temperature Tt is reached after the heating operation is started.
  • the air volume restriction is once released. Even so, the air volume is limited again.
  • the temperature of the indoor heat exchanger 16 rises above the second temperature and then falls below the second temperature again in the second cold air suppression control, even after the air volume restriction is once released again It is comprised so that an air volume restriction may be applied.
  • the second temperature is set lower than the first temperature. Therefore, the temperature of the indoor heat exchanger 16 when the air volume restriction is canceled in the second cold air suppression control is lower than the temperature of the indoor heat exchanger 16 when the air volume restriction is canceled in the first cold air suppression control.
  • the second cold air suppression control is a control that prioritizes the function of raising the room temperature Tr over the effect of suppressing the cold air feeling compared to the first cold air suppression control.
  • the case where the second cool air suppression control is performed is limited to a state in which the suppression of the cool air feeling is easy and the second start condition is satisfied.
  • the first start condition includes that the vehicle is in operation. For example, being in operation is an AND condition, and if not in operation, the first start condition is not satisfied even if other conditions are satisfied.
  • the first start condition may include a condition that the compressor 11 is driven. For example, if the condition that the compressor 11 is being driven is further included as an AND condition, the cold air suppression control is started only when the compressor 11 is being operated and the compressor 11 is being driven. Further, the first start condition may include a condition that it is not a reserved heating operation. For example, if it is further included in the AND condition that it is not a reserved heating operation, the cool air suppression control is started only when the compressor 11 is driven and the reserved heating operation is not performed. .
  • the first start condition may include a condition that it is not a forced “ceiling air flow” selection for removing a warm air pool where warm air is gathered near the ceiling.
  • the second start condition includes a condition that the horizontal flaps 64 and 65 are directed upward from a predetermined angle. For example, when the wind direction shown in FIG. 5 is “upward blowing”, the horizontal flaps 64 and 65 are directed above a predetermined angle An1 with respect to the horizontal plane. Therefore, if the second start condition includes that it is above the predetermined angle An1, the horizontal flaps 64 and 65 when the wind direction is in the “ceiling airflow” state and the “upward blowing” state are this condition. Will be satisfied.
  • the second starting condition is that the horizontal flaps 64 and 65 are directed upwards beyond a predetermined angle.
  • the angle of the horizontal flaps 64 and 65 is such that the conditioned air is blown out horizontally or above the horizontal direction. You may make it the conditions that it is a certain angle. In this case, the angle of the horizontal flaps 64 and 65 in the “ceiling airflow” state satisfies the condition. Further, in the “upward blowing” state of the present embodiment, since the conditioned air is blown out in the horizontal direction or above the horizontal direction, the angles of the horizontal flaps 64 and 65 in the “upward blowing” state are also set. This condition will be met.
  • the condition that the horizontal flaps 64 and 65 are oriented higher than a predetermined angle is that the angle of the horizontal flaps 64 and 65 is the angle along which the conditioned air blown out is along the ceiling. You may make it the conditions that it is the angle which blows out above a horizontal direction or a horizontal direction. In this case, the angle of the horizontal flaps 64 and 65 in the “ceiling airflow” state satisfies the condition.
  • the second start condition may include a condition that the flap is not swinging.
  • the AND condition further includes that the horizontal flaps 64, 65 and the vertical flap 63 are not swinging, the horizontal flaps 64, 65 and the vertical flap 63 are not swinging and the horizontal flaps 64, 65 are The second cold air suppression control is only started when the angle is above the predetermined angle.
  • a condition that all the flaps are not swinging can be set.
  • the second start condition may include a condition that a difference between the target room temperature Tt and the room temperature Tr is larger than a threshold value. For example, if the AND condition includes that the difference between the target room temperature Tt and the room temperature Tr is larger than the threshold value, the horizontal flaps 64 and 65 and the vertical flap 63 are not swinging, and the horizontal flaps 64 and 65 are predetermined.
  • the second cold air suppression control is started only when the angle is higher than the angle and the difference between the target room temperature Tt and the room temperature Tr is larger than the threshold value.
  • Airflow restriction and cancellation As a method of airflow restriction, for example, there is a method of restricting to the smallest first airflow that can be set by the user with the airflow setting switch 54 of the remote controller 5.
  • a dedicated air volume in the first cold air suppression control and the second cold air suppression control smaller than the first air volume may be provided. In this case, when the air volume restriction is applied in the first cold air suppression control and the second cold air suppression control, the air volume is limited to a dedicated air volume smaller than the first air volume.
  • the simplest method for releasing the airflow is that all the airflows from the first airflow to the fifth airflow when the first cold air suppression control and the second cold air suppression control reach the first temperature and the second temperature, respectively. This is a method of removing any airflow restriction so that can be selected. There are other ways to remove the airflow restriction as follows.
  • a plurality of first temperatures are set, and the first a temperature, the first b temperature, the first c temperature, and the first d temperature are included in the first temperature, and the first a temperature ⁇ the first b temperature ⁇ the first c temperature ⁇ the first d temperature
  • the temperature of the indoor heat exchanger 16 becomes higher than the 1a temperature
  • a part of the air volume restriction in the first cold air suppression control is canceled so that the first air volume and the second air volume can be selected.
  • a part of the first cool air suppression control is further limited so that the first air amount, the second air amount, and the third air amount can be selected.
  • the second cold air suppression control may be canceled in stages. For example, a plurality of second temperatures are set, and the second a temperature and the second b temperature are included in the second temperature, and the second a temperature ⁇ the second b temperature ⁇ the first a temperature ⁇ the first b temperature ⁇ the first c temperature ⁇ the first d temperature And Then, when the temperature of the indoor heat exchanger 16 becomes higher than the second a temperature, a part of the air volume restriction in the second cold air suppression control is canceled so that the third air volume can be selected from the first air volume. Further, when the temperature of the indoor heat exchanger 16 becomes higher than the second b temperature, all the air volume restrictions of the second cold air suppression control are further released.
  • the air volume that can be selected by the user here, the cancellation that makes it possible to select all of the first air volume to the fifth air volume at once, and the air volume that can be selected in stages are increased.
  • partial release that allows only a portion of the selection to be selected is also included. For partial cancellation, not only can you select only one part at a time and then exit, but also increase the air volume that can be selected in stages, but leave the air volume that cannot be selected until the end. The way is also included.
  • the control unit 50 is configured to use the first cold wind suppression control in a situation where priority is given to the suppression of the cool wind feeling, and to use the second cold wind suppression control in a situation where priority is given to promoting the increase in room temperature. Therefore, priority can be given to the suppression of the cool air feeling by using the first cold air suppression control, and priority can be given to promoting the increase in room temperature by using the second cold air suppression control. As a result, in the air conditioner 1 of the present embodiment, the effect of suppressing the feeling of cold air and promoting the increase in room temperature is improved as compared with the conventional case.
  • the case where the restriction on the air volume is released at the first temperature has been described as an example of the first cold air suppression control that restricts the air volume of the indoor fan 31 until the indoor heat exchanger 16 reaches the first temperature.
  • the first cold air suppression control only needs to be a control in which the air volume of the indoor fan 31 is limited until the indoor heat exchanger 16 reaches the first temperature, and is limited to the control in which the air volume restriction is released at the first temperature. It is not something that can be done.
  • the first cold wind suppression control and the second cold wind suppression control are selected according to the selection condition called the second start condition
  • the first cold wind suppression control is selected in a situation where priority is given to suppression of the cool wind feeling, and the room temperature rises
  • the selection condition can be set in advance so that the second cold air suppression control is selected in a situation where priority is given to the promotion of this.
  • the first cold wind suppression control is selected when the horizontal flaps 64 and 65 are not in the state in which the “ceiling airflow” wind direction is selected, and the horizontal flaps 64 and 65 are in the state in which the wind direction of the “ceiling airflow” is selected.
  • the second start condition is satisfied, the second cold air suppression control is selected.
  • the air volume restriction is released at a low temperature by the second cold air suppression control that blows out relatively cool conditioned air.
  • the horizontal flaps 64 and 65 do not correspond to the wind direction of the “ceiling airflow” and it is difficult to sufficiently suppress the cool air feeling, it is possible to select that the air volume restriction is released at a high temperature by the first cool air suppression control. ing. As a result, it is possible to easily realize the feeling of cold wind and the promotion of a rise in room temperature.
  • the second start condition which is the selection condition
  • the second start condition includes a condition that the temperature difference (Tt ⁇ Tr) between the target room temperature Tt and the room temperature Tr is larger than the threshold, as a condition for selecting the second cold air suppression control
  • the second cold air suppression control is not performed.
  • the temperature difference (Tt ⁇ Tr) is small, the user's desire to quickly raise the room temperature Tr is small.
  • the horizontal flaps 64 and 65 swing to wide range.
  • the second cold air suppression control is not performed.
  • control is performed to stop the swing of the horizontal flaps 64 and 65 in order to select the second cold air suppression control, there is a high possibility that the user will misunderstand that a failure has occurred. Such misunderstanding can be prevented by performing control so as not to stop the swing on condition that the swing is not performed.
  • a condition that not only the horizontal flaps 64 and 65 but also the vertical flap 63 does not swing may be included in the second start condition.
  • the horizontal flap is not limited to the two horizontal flaps 64 and 65, and may be one or three or more.
  • the second start condition which is the selection condition
  • the second start condition includes a condition that the horizontal flaps 64 and 65 are oriented above the predetermined angle An1, as a condition for selecting the second cold air suppression control
  • the angle is less than An1
  • the second cold air suppression control is not performed. Therefore, by setting the predetermined angle An1 so that the conditioned air does not hit the user who is in the room RS, even if the second cold air suppression control is performed when the user is in the room RS, it is relatively easy for the user. It can suppress that cold conditioned air hits directly, and can improve the control function of a feeling of cold wind.
  • the second cold air suppression is performed.
  • conditioned air is blown out horizontally or above the horizontal direction.
  • the second start condition which is the selection condition includes a condition that the predetermined angle of the horizontal flaps 64 and 65 is an angle along which the conditioned air blown out is along the ceiling
  • the second cold air suppression control is performed The blown conditioned air runs along the ceiling.
  • the indoor heat exchanger When the temperature of the indoor heat exchanger reaches a third temperature that is lower than the second temperature, it further includes a third cold air suppression control that releases the restriction on the air volume of the indoor fan, so that the room temperature rises further than the second cold air suppression control In a situation where priority is given to the promotion of the temperature, the third cold air suppression control can be used to quickly increase the room temperature.
  • a part of the flow shown in FIG. 8 may be changed to add the third cold air suppression control. It is determined whether or not the third start condition is satisfied between step S3 and step S4 in the flow of FIG. 8 (step S11). If the third start condition is satisfied, the third cold air suppression control is entered (step S12). If the third start condition is not satisfied, the process proceeds to step S4, the second cold air suppression control is entered, and the routine from step S2 to step S5 is repeated as already described.
  • step S13 it is next determined whether or not the indoor heat exchanger 16 has reached the third temperature.
  • step S14 the process proceeds to step S14, and the air volume restriction is released.
  • step S9 the process proceeds to step S2.
  • the operation after proceeding to step S9 or step S2 is the same as the operation of the flow shown in FIG.
  • the second start condition includes, for example, a condition that the wind direction is “ceiling airflow” or “upward blowing”
  • the third start condition includes, for example, a condition that the wind direction is “ceiling airflow”. It is assumed that the control of the control unit 50 is programmed as described above. That is, the third cold air suppression control is a control that places more emphasis on the promotion of the room temperature rise than the second cold air suppression control. Therefore, when the temperature of the indoor heat exchanger 16 reaches a third temperature lower than the second temperature, the air volume restriction is released so that, for example, the first to fifth air volumes can be selected (step S14).
  • the air conditioner 1 further includes the third cold air suppression control for releasing the restriction on the air volume of the indoor fan 31 when the temperature of the indoor heat exchanger 16 becomes the third temperature lower than the second temperature.
  • the room temperature can be quickly increased using the third cold air suppression control.
  • the third cold air suppression control is provided to improve the function of promoting the rise in room temperature
  • the condition for entering the third cold air suppression control is limited to the case where the suppression of the cold air feeling is easier than the condition for entering the second cold air suppression control.
  • the air conditioner 1 was comprised only for heating, as the air conditioner 1 is shown by FIG.10 and FIG.11, for example, the four-way switching valve 12 is added and heating is carried out. And cooling may be switched.
  • the compressor 11 discharges the internally compressed refrigerant from the discharge port to the first port of the four-way switching valve 12.
  • the four-way switching valve 12 includes a second port connected to the outdoor heat exchanger 13, a third port connected to the accumulator 15, and a fourth port connected to the indoor heat exchanger 16. And have.
  • the four-way switching valve 12 causes the refrigerant to flow between the first port and the fourth port and simultaneously causes the refrigerant to flow between the second port and the third port when the air conditioner 1 performs the heating operation. (The state indicated by the broken line is obtained). Further, when the air conditioner 1 performs the cooling operation and the reverse cycle defrost operation, the four-way switching valve 12 causes the refrigerant to flow between the first port and the second port and at the same time the third port and the fourth port. Allow refrigerant to flow between ports (indicated by solid line).
  • the first start condition of the flow shown in FIG. 8 includes a condition that the heating operation is selected, for example, as an AND condition. Just do it. Since the outdoor control device 26 controls the four-way switching valve 12, the control unit 50 can obtain information indicating which heating operation or cooling operation is currently being performed from the outdoor control device 26.
PCT/JP2017/046695 2017-02-06 2017-12-26 空気調和機 WO2018142817A1 (ja)

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AU2017397385A AU2017397385B2 (en) 2017-02-06 2017-12-26 Air conditioner
CN201780085486.5A CN110249187B (zh) 2017-02-06 2017-12-26 空调机
EP17895231.3A EP3578897B1 (en) 2017-02-06 2017-12-26 Air conditioner

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WO2023226386A1 (zh) * 2022-05-26 2023-11-30 重庆海尔空调器有限公司 一种防止空调过热的控制方法和装置

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AU2017397385A1 (en) 2019-09-26
EP3578897A4 (en) 2020-02-26
EP3578897A1 (en) 2019-12-11
JP2018128157A (ja) 2018-08-16
EP3578897B1 (en) 2021-04-14
CN110249187A (zh) 2019-09-17
AU2017397385B2 (en) 2020-10-01
JP6428804B2 (ja) 2018-11-28

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