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MX2014008047A - Air-conditioning apparatus. - Google Patents

Air-conditioning apparatus.

Info

Publication number
MX2014008047A
MX2014008047A MX2014008047A MX2014008047A MX2014008047A MX 2014008047 A MX2014008047 A MX 2014008047A MX 2014008047 A MX2014008047 A MX 2014008047A MX 2014008047 A MX2014008047 A MX 2014008047A MX 2014008047 A MX2014008047 A MX 2014008047A
Authority
MX
Mexico
Prior art keywords
indoor
temperature
heat exchanger
compressor
fan
Prior art date
Application number
MX2014008047A
Other languages
Spanish (es)
Other versions
MX364411B (en
Inventor
Kiyoshi Yoshimura
Shoichi Aoki
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Publication of MX2014008047A publication Critical patent/MX2014008047A/en
Publication of MX364411B publication Critical patent/MX364411B/en

Links

Classifications

    • 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
    • F24F1/0003—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station characterised by a split arrangement, wherein parts of the air-conditioning system, e.g. evaporator and condenser, are in separately located 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
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/56—Remote control
    • 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
    • F24F11/76—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by means responsive to temperature, e.g. bimetal springs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
    • F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/20—Humidity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B13/00—Compression machines, plants or systems, with reversible cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/30—Expansion means; Dispositions thereof
    • F25B41/31—Expansion valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/46—Improving electric energy efficiency or saving
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/64—Electronic processing using pre-stored data
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/029—Control issues
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/029—Control issues
    • F25B2313/0293—Control issues related to the indoor fan, e.g. controlling speed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/031—Sensor arrangements
    • F25B2313/0314—Temperature sensors near the indoor heat exchanger
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2500/00—Problems to be solved
    • F25B2500/19—Calculation of parameters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00—Control issues
    • F25B2600/01—Timing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00—Control issues
    • F25B2600/02—Compressor control
    • F25B2600/021—Inverters therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00—Control issues
    • F25B2600/25—Control of valves
    • F25B2600/2513—Expansion valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/02—Humidity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/17—Speeds
    • F25B2700/171—Speeds of the compressor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/21—Temperatures
    • F25B2700/2104—Temperatures of an indoor room or compartment
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Signal Processing (AREA)
  • Mathematical Physics (AREA)
  • Fuzzy Systems (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Atmospheric Sciences (AREA)
  • Human Computer Interaction (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

An air-conditioning apparatus includes an outdoor unit 10 including a compressor 11, an outdoor heat exchanger 13, an expansion device 14, and an outdoor fan 15 which blows air to the outdoor heat exchanger, and an indoor unit 20 including an indoor heat exchanger 21 and an indoor fan 22 which blows air to the indoor heat exchanger, and in which the compressor, the outdoor heat exchanger, the expansion device, and the indoor heat exchanger are sequentially connected by a refrigerant pipe 18 to form a refrigerant circuit. An indoor control device 23 calculates a value Î T of a temperature difference between an indoor temperature TR detected by a room temperature sensor 24 and a preset indoor temperature TS set by an operation on a remote controller, and determines the rotation speed N of an indoor fan in an indoor unit on the basis of the calculated value Î T of the temperature difference and the operating frequency Q of the compressor in the outdoor unit 10.

Description

AIR CONDITIONER TECHNICAL FIELD The present invention relates to an air conditioner, and more specifically, to an air conditioner that controls the speed of the air flow of an indoor fan provided in an indoor unit.
TECHNICAL BACKGROUND Generally, an air conditioner is required to obtain an optimum air conditioning capacity that corresponds to the interior temperature or the outlet air temperature, which causes the interior temperature or the exit air temperature to uniformly converge a pre-established internal temperature, to obtain an optimum and optimum air flow velocity, which corresponds to the capacity of air conditioning, to avoid an increase in unnecessary energy consumption, and to stabilize the refrigeration cycle .
As a way to achieve the above, there is a technique to calculate the air outlet temperature and the speed of the exhaust air flow of an indoor unit, which allows the indoor environment to become comfortable, based on the difference between the temperature interior and a preset interior temperature, adjusting the temperature of an indoor heat exchanger and the air flow velocity of an indoor fan to the calculated values, and controlling the operating frequency of a compressor and the rotation speed of the indoor fan to which are in a fixed state (see, for example, Patent Literature 1).
In addition, there is a technique for operating the operating frequency of a compressor, that is, the capacity of the compressor, according to the difference between the inlet air temperature of an indoor unit detected by an ambient temperature sensor, and a preset internal temperature, and adjusting the air flow rate of an indoor fan to a value corresponding to the operating frequency (see, for example, Patent Literature 2).
List of Appointments Patent Literature Patent Literature 1 Publication of Japanese Unexamined Patent Application No. 08-285353 (Summary) Patent Literature 2 Patent Application Unexamined Japanese Publication No. 10-096545 (Summary) BRIEF DESCRIPTION OF THE INVENTION Technical problem However, with the technique described in Patent Literature 1, three stage control steps are required which include calculating the air outlet temperature and the exhaust air flow rate of the indoor unit, adjusting the temperature of the exchanger of internal heat and the speed of the air flow of the indoor fan, and then control the operating frequency of the compressor and the speed of rotation of the indoor fan. Therefore, the delay in response to excess or lack of air conditioning capacity occurs. In the case where the response to the air conditioning capacity is delayed, the air flow velocity of the indoor fan will increase or decrease, and on the contrary, this may cause discomfort.
In addition, with the technique described in Patent Literature 2, two-step control steps are required including operating the operating frequency of the compressor, and then adjusting the air flow rate of the indoor fan. Therefore, there is a problem of a delay in the response to excess or lack of air conditioning capacity.
The present invention has been made in order to solve the problems mentioned above. An object of the present invention is to obtain an air conditioner that achieves energy savings without the air conditioning capacity being insufficient, and that is able to respond quickly to the excess or lack of air conditioning capacity and control the air flow velocity of an indoor fan.
Solution to the problem An air conditioner according to the present invention that includes an outdoor unit that includes a compressor, an outdoor heat exchanger, an expansion device and an outdoor fan that blows air to the outdoor heat exchanger, and an indoor unit that includes an indoor heat exchanger and an indoor fan that blows air to the indoor heat exchanger, and in which the compressor, the outdoor heat exchanger, the expansion device and the indoor heat exchanger are sequentially connected to a refrigerant tube to form a refrigerant circuit, which includes a room temperature sensor, which detects an indoor temperature; and a controller that calculates a value of a temperature difference between the interior temperature detected by the room temperature sensor and a preset interior temperature, and determines a rotation speed of the indoor fan, based on the calculated value of the temperature difference and a compressor operating frequency.
Advantageous effects of the invention According to the present invention, the value of a temperature difference between an indoor temperature detected by an ambient temperature sensor and a preset indoor temperature is calculated, and the rotation speed of an indoor fan is determined based on the calculated value of the temperature difference and the operating frequency of a compressor. As described above, the operating frequency of the compressor is used directly as the data to be controlled, when the rotation speed of the indoor fan is determined. Therefore, a rapid response can be made to the excess or lack of air conditioning capacity. Furthermore, as described above, the rotation speed of the indoor fan is determined based on the value of the temperature difference and the operating frequency of the compressor. Therefore, the rotation speed of the indoor fan can be kept low. Thus, an energy saving of the input power of the indoor fan can be achieved. Accordingly, the sound of the air sent from the indoor fan can be reduced.
BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a diagram of a refrigerant circuit illustrating the schematic configuration of an air conditioner according to Modality 1.
Figure 2 is a flow diagram illustrating an operation of the air conditioner according to Modality 1.
Figure 3 is a diagram illustrating the rotation speed of an indoor fan according to the correlation between the operating frequencies of a compressor and the value of a temperature difference.
Figure 4 is a diagram of a refrigerant circuit illustrating a schematic configuration of an air conditioner according to Modality 2.
Figure 5 is a flow chart illustrating an operation of the air conditioner according to Mode 2.
Figure 6 is a refrigerant circuit diagram illustrating a schematic configuration of an air conditioner according to Modality 3.
Figure 7 is a flow chart illustrating an operation of the air conditioner according to Mode 3.
DESCRIPTION OF THE MODALITIES Modality 1 Figure 1 is a refrigerant circuit diagram illustrating a schematic configuration of an air conditioner according to Modality 1.
The air conditioner of Modality 1 includes an outdoor unit 10 and an indoor unit 20. The outdoor unit 10 includes a compressor 11, a four way valve 12, an outdoor heat exchanger 13, an electronic expansion valve 14, an external fan 15 that sends the outside air to the outdoor heat exchanger 13, an external control device 16, an inverter 17, which generates the operating frequency of the compressor 11, under the control of the external control device 16, and the like. The indoor unit 20 includes an indoor heat exchanger 21, an indoor fan 22, which sends the indoor air to the indoor heat exchanger 21, an indoor control device 23 (controller), a room temperature sensor 24, which detects the interior temperature, and the like. The refrigerant circuit of the air conditioner is configured such that the compressor 11, the four-way valve 12, the external heat exchanger 13, the electronic expansion valve 14 (expansion device), the indoor heat exchanger 21 and similar, are connected sequentially by a refrigerant tube 18.
The four-way valve 12 described above is a valve for changing the cooling cycle between cooling and heating. When the refrigeration cycle is changed to a cooling operation, the outdoor heat exchanger 13 acts as a condenser and the indoor heat exchanger 21 acts as an evaporator. When the refrigeration cycle is changed to a heating operation, the indoor heat exchanger 21 acts as a condenser and the external heat exchanger 13 acts as an evaporator. The ambient temperature sensor 24 is placed on the suction side of the indoor fan 22, inside the indoor unit 20.
The external control device 16 controls the capacity (the amount of refrigerant discharge) of the compressor 11, so that the internal temperature TR becomes an internal temperature Ts preset. That is, the inverter 17 is controlled so that the operating frequency that serves as the corresponding capacity is transmitted to the compressor 11. Furthermore, the external control device 16 controls the operation degree of the electronic expansion valve 14, so that the degree of subcooling of the refrigerant at the outlet of the outdoor heat exchanger 13, becomes an objective value during a cooling operation, and controls the degree of opening of the electronic expansion valve 14, so that the degree of subcooling of the coolant at the outlet of the indoor heat exchanger 21, becomes an objective value during a heating operation.
The indoor control device 23 transmits the operation information to the external control device 16, and the operation of the indoor fan 22 begins, when it receives an instruction to start the operation (cooling or heating), by the operation of a remote controller. The indoor control device 23 reads the interior temperature TR detected by the ambient temperature sensor 24, and the internal temperature Ts set, adjusted by an operation of the remote controller, and transmits the temperature information to the external control device 16. In addition, the internal control device 23 calculates a value ?? of a temperature difference between the indoor temperature TR and the pre-set interior temperature Ts, and determines the rotation speed N of the indoor fan 22, based on the calculated value ?? of the temperature difference and the operating frequency Q of the compressor 1 1. The determination of the rotation speed N will be described later.
Here, the flow of the refrigerant during a cooling operation and a heating operation in the air conditioner configured as mentioned above will be explained.
During a cooling operation, the refrigerant becomes a gaseous refrigerant at high temperature and high pressure when compressed by the compressor 11, and flows to the outdoor heat exchanger 13 via the four-way valve 12. Then, in the exchanger of external heat 13, the gaseous refrigerant exchanges heat (rejects heat) with the outside air of the external fan 15 and becomes a liquid refrigerant at high pressure. After that, the liquid refrigerant is expanded to a specific pressure by the electronic expansion valve 14, it becomes a two-phase gas-liquid refrigerant, at low pressure, and flows to the indoor heat exchanger 21. The gas refrigerant - two-phase liquid that has entered the indoor heat exchanger 21, exchanges heat (removes heat) with the indoor air of the indoor fan 22, becomes a gaseous refrigerant at low temperature and low pressure, and returns to the compressor 11 via the valve four-way 12 During the heating operation, the refrigerant also becomes a gaseous refrigerant at high temperature and high pressure, as mentioned above, when compressed by the compressor 11, and flows to the indoor heat exchanger 21 via the four-way valve 12. In the indoor heat exchanger 21, the gaseous refrigerant exchanges heat (rejects heat) with the interior air of the indoor fan 22, and it becomes a high pressure liquid refrigerant. Next, the liquid refrigerant is expanded to a specific pressure by the electronic expansion valve 14, becomes a gas-liquid refrigerant of two phases at low pressure, and flows to the outdoor heat exchanger 13. The gas-liquid refrigerant of two phases that has entered the outdoor heat exchanger 13, exchanges heat (removes heat) with the outside air of the outdoor fan 15, becomes a gaseous refrigerant at low temperature and low pressure, and returns to the compressor 11 via the four-way valve 12 Next, an operation for determining the rotation speed of the indoor fan 22, based on Figures 2 and 3, will be explained.
Figure 2 is a flowchart illustrating an operation of the air conditioner according to Modality 1, and Figure 3 is a diagram illustrating the rotation speed of the indoor fan according to the correlation between the operating frequency of the compressor and the value of a temperature difference.
The horizontal axis illustrated in Figure 3 represents the operating frequency Q of the compressor, and the vertical axis represents the value ?? of the temperature difference between the indoor temperature TR and the internal temperature Ts pre-set. The operating frequency Q is classified into four intervals: a range less than or equal to Q1, a range greater than Q1 and less than or equal to Q2, a range greater than Q2 and less than or equal to Q3, and an interval greater than Q3. The value ?? of the temperature difference is classified in a range less than or equal to T1, a range greater than T1 and less than or equal to T2, a range greater than T2 and less than or equal to T3, and a range greater than T3 and less than or equal to T4. With respect to the rotation speed N of the indoor fan 22, determined based on the operating frequency Q and the value ?? of the temperature difference, LL represents an extremely low speed, Low represents a low speed, Mid represents an average speed, and Hi represents a high speed. The data in Figure 3 are arranged in advance as a data table in the indoor control device 23.
When an instruction to start a cooling operation or a heating operation is input from the remote controller, the indoor control device 23 transmits the operation information to the external control device 16, to cause the outdoor unit 10 to operate, and start the operation of the indoor fan 22.
Next, the indoor control device 23 reads the interior temperature TR detected by the room temperature sensor 24 (S10), and reads the pre-set interior temperature Ts, adjusted by an operation of the remote controller (S11). The internal control device 23 calculates the value ?? of the temperature difference between the indoor temperature TR read and the internal temperature Ts preset (S12), and read the operating frequency Q of the compressor 11 of the external control device 16 (S13).
After reading the operating frequency Q of the compressor 1 1, the internal control device 23 determines the rotation speed N of the indoor fan 22, referring to the data table, based on the operating frequency Q and the calculated value ?? of the temperature difference (S14). For example, when the operating frequency Q of the compressor is greater than Q3 and the value ?? of the temperature difference is within a range greater than T2 and less than or equal to T3, the indoor control device 23 adjusts the rotation speed N of the indoor fan 22 to Hi. Next, the inner control device 23 reads the angle of a grid to change the direction to send the air up or down (S15), and controls the read angle of the grid, according to the rotation speed N of the grid. indoor fan 22 (S16).
For example, the interior control device 23 controls the angle of the grid, so that the angle of the grid becomes horizontal with the floor surface, in the case where the angle of the grid is oriented downward, when the rotation speed N of the internal fan 22 represents Hi. Further, in the case where the angle of the grid is horizontal with the floor surface, when the rotation speed N of the indoor fan 22 represents Hi, the indoor control device 23 will maintain the current state. Then, the internal control device 23 operates for t minutes, maintaining the determined rotation speed N (Hi) of the indoor fan 22 and the angle of the fixed grid according to the rotation speed N of the indoor fan 22 (S17). In the case where the rotation speed N of the indoor fan 22 represents Mid, the grid will tilt downward by a predetermined angle. In the case where the rotation speed N represents Low, the grid will be tilted further down by a predetermined angle. In the case where the rotation speed N represents LL, the grid will be tilted substantially towards a vertical direction.
After t minutes have elapsed, the indoor control device 23 returns to S10 and repeats the series of operations described above. That is, the interior control device 23 determines the rotation speed N of the indoor fan 22, according to the value ?? of the temperature difference between the internal temperature TR read and the internal temperature Ts preset, and the operating frequency Q of the compressor 11, controlled by the external control device 16. In the case where the operating frequency Q of the compressor 1 Do not change and be greater than Q3 and the value ?? of the temperature difference is within a range greater than T1 and less than or equal to T2, the rotation speed N of the indoor fan 22 will be changed from Hi to Mid. Also, in the case where the operating frequency Q of the compressor 1 1 is greater than Q2 and less than or equal to Q3, and the value ?? of the temperature difference is less than or equal to T1, the rotation speed N of the indoor fan 22 will be changed from Hi to Low.
As described above, in Modality 1, the value is calculated ?? of the temperature difference between the indoor temperature TR and the internal temperature Ts preset, and the rotation speed N of the indoor fan 22 is determined based on the value ?? calculated from the temperature difference and the operating frequency Q of the compressor 11. By making the operating frequency Q of the compressor 1 to be a data to be controlled directly when the rotation speed N of the indoor fan 22 is determined, an response for excess or lack of air conditioning capacity.
Also, since the value is calculated ?? of the temperature difference between the indoor temperature TR and the internal temperature Ts preset, and the rotation speed N of the indoor fan 22 is determined based on the value ?? calculated from the temperature difference and the operating frequency Q of the compressor 11, the rotation speed N of the indoor fan 22 can be kept low. Accordingly, an energy saving of the input power of the indoor fan 22 can be achieved, and accordingly, the sound of the air sent from the indoor fan 22 can be reduced.
Modality 2 Figure 4 is a refrigerant circuit diagram illustrating a schematic configuration of an air conditioner according to Mode 2. Parts similar to those in Mode 1 described with reference to Figure 1 are represented by the same numbers of reference, and only the different parts of Modality 1 will be explained.
In the air conditioner according to Modality 2, a floor temperature sensor 25 which detects the temperature of the interior floor TF, as well as the room temperature sensor 24, are disposed in the indoor unit 20. The sensor of the temperature of the floor 25 is, for example, placed on the front face of the indoor unit 20, and includes an infrared sensor that detects the floor temperature TF of the infrared rays radiated from the floor surface.
The indoor control device 23 (controller) of the indoor unit 20 in Modality 2, corrects the indoor temperature TR detected by the room temperature sensor 24, according to the floor temperature TF detected by the temperature sensor of the indoor unit. floor 25, to obtain an interior temperature TRI of the first correction. The internal control device 23 calculates the value ?? of the temperature difference between the internal temperature T I of the first correction and an internal temperature Ts pre-set, and determines the rotation speed N of the indoor fan 22, based on the value ?? calculated from the temperature difference and the operating frequency Q of the compressor 11. In the indoor control device 23, as well as in the data table described above, a data table of the first correction is provided, in which they are described the temperature of the floor TF and a fixed correction value according to the temperature of the floor TF for the correction of the interior temperature TR. The value of the correction is set in such a way that the interior temperature TR decreases as the temperature of the floor TF increases.
Next, an operation for determining the rotation speed of the indoor fan 22, with reference to Figure 5, will be explained.
Figure 5 is a flow chart illustrating an operation of the air conditioner according to Modality 2.
When the instruction to start a cooling operation or a heating operation is input from the remote controller, the indoor control device 23 transmits the operation information to the external control device 16 to cause the outdoor unit 10 to operate, and start the operation of the indoor fan 22. After that, the indoor control device 23 reads the indoor temperature TR detected by the room temperature sensor 24 (S20), reads the indoor floor temperature TF detected by the floor temperature sensor 25 (S21), and reads the pre-set interior temperature Ts, adjusted by the operation of the remote controller (S22). The indoor control device 23 selects a correction value that is set according to the floor temperature Tp of the data table of the first correction, corrects the internal temperature TR read, based on the correction value to obtain a temperature TRI interior of the first correction (S23). The internal control device 23 calculates the value ?? of the temperature difference between the inner temperature TRi of the first correction, corrected, and the internal temperature Ts preset (S24), and reads the operating frequency Q of the compressor 11 of the external control device 16 (S25).
After reading the operating frequency Q of the compressor 1, the internal control device 23 determines the rotation speed N of the indoor fan 22, referring to the data table, based on the operating frequency Q and the value ?? calculated from the temperature difference (S26). For example, when the operating frequency Q of the compressor is greater than Q3 and the value ?? of the temperature difference is within a range greater than T1 and less than or equal to T2, the internal control device 23 adjusts the rotation speed N of the indoor fan 22 to Mid. Next, the inner control device 23 reads the angle of the grid to change the air delivery direction upwards or downwards (S27), and controls the read angle of the grid, according to the rotation speed N of the indoor fan 22 (S28).
For example, the interior control device 23 controls the angle of the grid, so that the angle of the grid is tilted downward by a predetermined angle, in the case where the angle of the grid is horizontal with the floor surface when the rotation speed N of the indoor fan 22 represents Mid. Next, the internal control device 23 operates for t minutes, maintaining the determined rotation speed N (Mid) of the indoor fan 22 and the grid angle set according to the rotation speed N of the indoor fan 22 (S29) . The angle of the grid against the rotation speed N of the indoor fan 22 is similar to that in Mode 1.
After t minutes have passed, the indoor control device 23 returns to S20 and repeats the series of operations described above. That is, the internal control device 23 determines the rotation speed N of the indoor fan 22, based on the value ?? of the temperature difference between the interior temperature TRI of the first correction, which has been obtained by correcting the interior temperature TR according to the temperature of the floor TF, and the internal temperature Ts preestablished, and based on the operating frequency Q of the compressor 11, controlled by the external control device 16. In the case where the operating frequency Q of the compressor 11 does not change and is greater than Q3 and the value ?? of the temperature difference is less than or equal to T1, the rotation speed N of the indoor fan 22 will remain at Mid. Also, in the case where the operating frequency Q of the compressor 11 is greater than Q2 and less than or equal to Q3, and the value ?? of the temperature difference is less than or equal to T1, the rotation speed N of the indoor fan 22 will change from Mid to Low.
As described above, in Modality 2, the interior temperature TR is corrected according to the floor temperature TF to obtain the interior temperature TRI of the first correction, the value is calculated ?? of the temperature difference between the inner temperature TRi of the first correction and the internal temperature Ts preset, and the rotation speed N of the indoor fan 22 is determined based on the calculated value ?? of the temperature difference, and the operating frequency Q of the compressor 1 1. By taking into account the floor temperature TF as the data to be controlled when the rotation speed N of the indoor fan 22 is determined, an ambient temperature can be set Closer to a comfortable interior space.
Mode 3 Figure 6 is a refrigerant circuit diagram illustrating a schematic configuration of an air conditioner according to Modality 3. Parts similar to those in Modality 2 described with reference to Figure 4 are represented by the same numbers reference, and only the different parts of Modality 2 will be explained.
In the air conditioner according to Modality 3, a humidity sensor 26 which detects the internal humidity, as well as as the ambient temperature sensor 24 and the floor temperature sensor 25, the indoor unit 20 is arranged. The humidity sensor 26 is placed, for example, on the front face of the indoor unit 20.
The internal control device 23 (controller) corrects the internal temperature TR detected by the room temperature sensor 24, according to the floor temperature TF detected by the floor temperature sensor 25, to obtain an interior temperature TR1 of the first correction. Furthermore, according to a humidity TH detected by the humidity sensor 26, the internal control device 23 corrects the internal temperature TRI of the first correction, to obtain an internal temperature TR2 of the second correction, calculates the value ?? of the temperature difference between the inner temperature TR2 of the second correction and an internal temperature Ts preset, and determines the rotation speed N of the indoor fan 22, based on the value ?? calculated from the temperature difference and the operating frequency Q of the compressor 11. In the indoor control device 23, as well as in the data table and the data table of the first correction described above, a data table of the second correction, in which the humidity TH and the value of the fixed correction according to the humidity TH are described for the correction of the internal temperature TRI of the first correction. The correction value is adjusted in such a way that the indoor temperature TR decreases as the humidity TH increases.
Next, an operation for determining the rotation speed of the indoor fan 22, based on FIG. 7, will be explained.
Figure 7 is a flow chart illustrating an operation of the air conditioner according to Mode 3.
When an instruction to start a cooling operation or a heating operation is input from the remote controller, the indoor control device 23 transmits the operation information to the external control device 16, to cause the outdoor unit 10 to operate, and start the operation of the indoor fan 22. After that, the indoor control device 23 reads the indoor temperature TR detected by the room temperature sensor 24 (S30), and reads the indoor floor temperature TF detected by the room temperature sensor. 25th floor (S31). In addition, the indoor control device 23 reads the humidity TH detected by the humidity sensor 26 (S32), and reads the pre-set indoor temperature Ts, adjusted by an operation of the remote controller (S33).
Then, the indoor control device 23 selects a correction value adjusted according to the floor temperature TF of the data table of the first correction, corrects the internal temperature TR read, based on the correction value, to obtain the internal temperature TRI of the first correction (S34). Then, the internal control device 23 selects a correction value adjusted according to the humidity TH of the data table of the second correction. Based on the correction value, the internal temperature TRI of the first correction, which has been obtained by a previous correction, is further corrected to obtain a threshold temperature TR2 of the second correction (S35). After that, the internal control device 23 calculates the value ?? of the temperature difference between the inner temperature TR2 of the second correction and the internal temperature Ts preset (S36), and reads the operating frequency Q of the compressor 11 of the external control device 16 (S37).
After reading the operating frequency Q of the compressor 11, the internal control device 23 determines the rotation speed N of the indoor fan 22, referring to the data table, based on the operating frequency Q and the calculated value ?? of the temperature difference (S38). For example, in the case where the operating frequency Q of the compressor is greater than Q3 and the value ?? of the temperature difference is greater than T1 and less than or equal to T2, the internal control device 23 will set the rotation speed N of the indoor fan 22 to Mid. Next, the interior control device 23 reads the angle of the grid to change the air delivery direction upwards or downwards (S39), and controls the read angle of the grid according to the rotation speed N of the fan interior 22 (S40).
As described above, the interior control device 23 controls the angle of the grid, so that the grid is tilted downward, by a predetermined angle, in the case where the grid angle is horizontal with the floor surface , when the rotation speed N of the inner fan 22 represents Mid. Next, the inner control device 23 operates for t minutes, maintaining the determined rotation speed N (Mid) of the indoor fan 22, and the angle of the grid adjusted according to the rotation speed N of the indoor fan 22 (S41). ). The angle of the grid against the rotation speed N of the indoor fan 22 is similar to that in Mode 1.
After t minutes have elapsed, the indoor control device 23 returns to S30 and repeats the series of operations described above. That is, the internal control device 23 determines the rotation speed N of the indoor fan 22, based on the value ?? of the temperature difference between the interior temperature TR2 of the second correction, which has been obtained by correcting the interior temperature TR according to the temperature of the floor TF and the humidity TH, and the internal temperature Ts preestablished, and based on the frequency of operation Q of the compressor 11, controlled by the external control device 16. As described above, in the case where the operating frequency Q of the compressor 11 does not change, and is greater than Q3 and the value ?? of the temperature difference is less than or equal to T1, the rotation speed N of the indoor fan 22 will remain at Mid. In the case where the operating frequency Q of the compressor 11 is greater than Q2 and less than or equal to Q3, and the value ?? of the temperature difference is less than or equal to T1, the rotation speed N of the indoor fan 22 will change from Mid to Low.
As described above, in Modality 3, the interior temperature TR is corrected according to the floor temperature TF to obtain the first interior temperature correction TRi, and the interior temperature TRI of the first correction is corrected according to the humidity TH detected by the humidity sensor 26, to obtain the interior temperature TR2 of the second correction. Next, the value is calculated ?? of the temperature difference between the inner temperature TR2 of the second correction and the internal temperature Ts preset, and the rotation speed N of the indoor fan 22 is determined based on the calculated value ?? of the temperature difference and the operating frequency Q of the compressor 11. When taking into account the humidity TH, as well as the temperature of the floor TF, as the data to be controlled when the rotation speed N of the indoor fan 22 is determined, A temperature control can be performed to reach a temperature closer to the sensible temperature.
In Modes 1, 2 and 3, the angle of the grid is read after the rotation speed N of the indoor fan 22 is determined, based on the calculated value ?? of the temperature difference and the operating frequency Q of the compressor 11. However, this is merely an example, and the time to read the grid angle is not limited.
Also, in Modes 1, 2 and 3, the rotation speed N of the indoor fan 22 is determined based on the value ?? calculated from the temperature difference and the operating frequency Q of the compressor 1 1 (see Figure 3). However, an ideal rotation speed of the indoor fan 22 can be obtained by multiplying a correction factor according to the determined rotation speed N. When the rotation speed N of the indoor fan 22 determined by referring to the database in Figure 3 goes beyond a certain range, the rotation speed N of the indoor fan 22 can be controlled to become the ideal rotation speed. In such a case, the interior temperature can be controlled to be more suitable for the current situation.
List of reference signs 10: outdoor unit, 11: compressor, 12: four-way valve, 13: outdoor heat exchanger, 14: electronic expansion valve, 15: outdoor fan, 16: external control device, 17: inverter, 18: refrigerant pipe , 20: indoor unit, 21: indoor heat exchanger, 22: indoor fan, 23: indoor control device, 24: room temperature sensor, 25: floor temperature sensor, 26: humidity sensor.

Claims (3)

NOVELTY OF THE INVENTION CLAIMS
1. - An air conditioner that includes an outdoor unit that includes a compressor, an outdoor heat exchanger, an expansion device and an outdoor fan, which blows air into the outdoor heat exchanger, and an indoor unit that includes an exchanger of internal heat and an indoor fan, which blows air to the indoor heat exchanger, and in which the compressor, the outdoor heat exchanger, the expansion device, and the indoor heat exchanger are connected sequentially by a cooling tube to form a refrigerant circuit, the air conditioner comprises: a room temperature sensor, which detects an indoor temperature; and a controller that calculates a value of a temperature difference between the interior temperature detected by the room temperature sensor and a preset interior temperature, and determines a rotation speed of the indoor fan, based on the calculated value of the temperature difference and a compressor operating frequency.
2. - An air conditioner including an outdoor unit, including a compressor, an outdoor heat exchanger, an expansion device and an outdoor fan that blows air to the outdoor heat exchanger, and an indoor unit that includes a indoor heat exchanger and an indoor fan, which blows air to the indoor heat exchanger, and in which the compressor, the outdoor heat exchanger, the expansion device, and the indoor heat exchanger are connected sequentially by a refrigerant pipe , to form a refrigerant circuit, the air conditioning apparatus comprises: a room temperature sensor that detects an indoor temperature; a floor temperature sensor that detects an indoor floor temperature; and a controller that corrects the interior temperature detected by the room temperature sensor, according to the floor temperature detected by the floor temperature sensor, to obtain a first correction of the interior temperature, calculates a value of a difference of temperature between the first correction of the indoor temperature and a preset indoor temperature, and determines a rotation speed of the indoor fan, based on the calculated value of the temperature difference and a compressor operating frequency.
3. - An air conditioner that includes an outdoor unit that includes a compressor, an outdoor heat exchanger, an expansion device and an outdoor fan, which blows air to the outdoor heat exchanger, and an indoor unit that includes a heat exchanger interior and an indoor fan, which blows air to the indoor heat exchanger, and in which the compressor, the outdoor heat exchanger, the expansion device and the indoor heat exchanger are connected sequentially by a cooling tube to forming a refrigerant circuit, the air conditioning apparatus comprises: a room temperature sensor that detects an indoor temperature; a floor temperature sensor that detects an indoor floor temperature; a humidity sensor that detects the interior humidity; and a controller that corrects the interior temperature detected by the room temperature sensor, according to the floor temperature detected by the floor temperature sensor, to obtain a first correction of the interior temperature, corrects the first correction of the internal temperature, according to the humidity detected by the humidity sensor, to obtain a second correction of the interior temperature, calculates a value of a temperature difference between the second correction of the interior temperature and a pre-established interior temperature, and determines a internal fan rotation speed, based on the calculated value of the temperature difference and a compressor operating frequency.
MX2014008047A 2013-07-31 2014-06-27 Air-conditioning apparatus. MX364411B (en)

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