CN112377986A - Air conditioner and control method thereof - Google Patents

Air conditioner and control method thereof Download PDF

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Publication number
CN112377986A
CN112377986A CN202011255694.5A CN202011255694A CN112377986A CN 112377986 A CN112377986 A CN 112377986A CN 202011255694 A CN202011255694 A CN 202011255694A CN 112377986 A CN112377986 A CN 112377986A
Authority
CN
China
Prior art keywords
heat exchanger
temperature
air conditioner
air
outdoor fan
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
CN202011255694.5A
Other languages
Chinese (zh)
Inventor
石鑫
孟庆好
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hisense Shandong Air Conditioning Co Ltd
Original Assignee
Hisense Shandong Air Conditioning Co Ltd
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 Hisense Shandong Air Conditioning Co Ltd filed Critical Hisense Shandong Air Conditioning Co Ltd
Priority to CN202011255694.5A priority Critical patent/CN112377986A/en
Publication of CN112377986A publication Critical patent/CN112377986A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007Indoor units, e.g. fan coil units
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007Indoor units, e.g. fan coil units
    • F24F1/0059Indoor units, e.g. fan coil units characterised by heat exchangers
    • F24F1/0063Indoor units, e.g. fan coil units characterised by heat exchangers by the mounting or arrangement of the heat exchangers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007Indoor units, e.g. fan coil units
    • F24F1/0083Indoor units, e.g. fan coil units with dehumidification means
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/62Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63Electronic processing
    • F24F11/64Electronic processing using pre-stored data
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/62Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63Electronic processing
    • F24F11/65Electronic processing for selecting an operating mode
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/70Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/83Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
    • F24F11/84Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/70Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/87Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling absorption or discharge of heat in outdoor units
    • F24F11/871Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling absorption or discharge of heat in outdoor units by controlling outdoor fans
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/88Electrical aspects, e.g. circuits
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00Control inputs relating to air properties
    • F24F2110/10Temperature

Abstract

The invention provides an air conditioner and a control method thereof, comprising the following steps: a compressor for discharging a gaseous refrigerant; the four-way valve, two of which are respectively connected with the air suction port and the air exhaust port of the compressor; an opening at one end of the outdoor heat exchanger is communicated with the four-way valve, and an opening at the other end of the outdoor heat exchanger is connected with a second throttling device; one end of the second heat exchanger is connected with the second throttling device, and the other end of the second heat exchanger is connected with the first throttling device; and one end of the first heat exchanger is connected with the first throttling device, and the other end of the first heat exchanger is connected with the four-way valve. The outdoor fan, the first throttling device and the second throttling device of the air conditioner are controlled by the air conditioner control system, so that the constant-temperature dehumidification, heating dehumidification and cooling dehumidification functions are realized, and the temperature control requirement of a user during the dehumidification of the air conditioner is met.

Description

Air conditioner and control method thereof
Technical Field
The invention belongs to the technical field of air conditioning, and particularly relates to an air conditioner and a control method of the air conditioner.
Background
At present, the household appliance industry is in a situation of intense competition, each big competitive product has unique innovation in the aspects of functions, appearance and the like, and the product details are also important factors influencing the purchasing power of consumers.
When the existing air conditioner dehumidifies indoor air, the evaporator absorbs heat in the indoor air, and the indoor air is cooled by the evaporator so that moisture in the indoor air is condensed and separated out, thereby achieving the purpose of dehumidification. The existing air conditioner is in a refrigeration mode during dehumidification, so that the air outlet temperature can be continuously reduced, and the control requirement of a user on the air outlet temperature cannot be met.
The invention is provided in view of the above.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. For this purpose,
the invention provides an air conditioner, which realizes the heating, refrigerating and dehumidifying functions of the air conditioner by controlling the opening and closing degrees of a first throttling device and a second throttling device.
The invention provides a control method of an air conditioner, which is simple, can realize the functions of refrigeration and heating, constant temperature dehumidification, temperature rise dehumidification and temperature reduction dehumidification, ensures that the indoor environment temperature can be stably maintained at the preset temperature of a user, reduces the change of the indoor temperature difference, and improves the use experience of the user.
An embodiment of an aspect of the present invention provides an air conditioner, including: a compressor for discharging a gaseous refrigerant; the four-way valve, two of which are respectively connected with the air suction port and the air exhaust port of the compressor; an opening at one end of the outdoor heat exchanger is communicated with the four-way valve, and an opening at the other end of the outdoor heat exchanger is connected with a second throttling device; one end of the second heat exchanger is connected with the second throttling device, and the other end of the second heat exchanger is connected with the first throttling device; and one end of the first heat exchanger is connected with the first throttling device, and the other end of the first heat exchanger is connected with the four-way valve.
According to one embodiment of the invention, the first heat exchanger is arranged in parallel with the second heat exchanger.
According to one embodiment of the invention, a spacing distance is provided between the first heat exchanger and the second heat exchanger.
According to one embodiment of the invention, the spacing distance between the first heat exchanger and the second heat exchanger is D, and D is more than or equal to 5mm and less than or equal to 30 mm.
According to an embodiment of the invention, the first throttle device and the second throttle device each employ an electronic expansion valve.
According to one embodiment of the invention, a water pan is arranged below the first heat exchanger and the second heat exchanger.
An embodiment of another aspect of the present invention provides a method for controlling an air conditioner, including:
s1, setting a preset temperature T by a user;
s2, comparing the preset temperature T with the indoor real-time environment temperature T1 to determine a dehumidification mode;
s3, comparing the difference value delta T between the air conditioner outlet air temperature T2 and the indoor real-time environment temperature T1, and adjusting the rotating speed of the outdoor fan according to the difference value;
s4, after the rotation speed of the outdoor fan is adjusted, the outdoor fan operates for a preset time t;
s5 loops through S2, S3, and S4 until the dehumidification mode is turned off.
According to an embodiment of the invention, when the preset temperature T is compared with the indoor real-time environment temperature T1 to determine the dehumidification mode, the temperature-rising dehumidification mode is operated when T > T1, the constant-temperature dehumidification mode is operated when T1, and the temperature-falling dehumidification mode is operated when T < T1.
According to one embodiment of the invention, when the temperature-raising dehumidification mode is operated, the difference value delta T between the air conditioner outlet air temperature T2 and the indoor real-time environment temperature T1 is compared;
when the delta T is smaller than a first preset value, the rotating speed of the outdoor fan is reduced by m revolutions per second;
when the delta T is equal to a first preset value, the rotating speed of the outdoor fan is unchanged;
and when the delta T is larger than a first preset value, the rotating speed of the outdoor fan is increased by m revolutions per second.
According to one embodiment of the invention, when the constant temperature dehumidification mode is operated, the difference value delta T between the air conditioner outlet air temperature T2 and the indoor real-time environment temperature T1 is compared;
when the delta T is smaller than a second preset value, the rotating speed of the outdoor fan is reduced by m revolutions per second;
when the delta T is equal to a second preset value, the rotating speed of the outdoor fan is unchanged;
and when the delta T is larger than a second preset value, the rotating speed of the outdoor fan is increased by m revolutions per second.
According to an embodiment of the invention, when the cooling and dehumidifying mode is operated, the difference Δ T between the air conditioner outlet air temperature T2 and the indoor real-time environment temperature T1 is compared;
when the delta T is smaller than a third preset value, the rotating speed of the outdoor fan is reduced by m revolutions per second;
when the delta T is equal to a third preset value, the rotating speed of the outdoor fan is unchanged;
and when the delta T is larger than a third preset value, the rotating speed of the outdoor fan is increased by m revolutions per second.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of an air conditioner provided in accordance with an embodiment of the present invention;
FIG. 2 is a schematic illustration of a first heat exchanger and a second heat exchanger installation provided in accordance with an embodiment of the present invention;
FIG. 3 is a schematic diagram of air intake of an indoor unit of an air conditioner according to an embodiment of the present invention;
fig. 4 is a first schematic diagram of an air conditioner system according to an embodiment of the present invention;
fig. 5 is a schematic diagram of an air conditioner system according to an embodiment of the present invention;
fig. 6 is a logic diagram of a control method of an air conditioner according to an embodiment of the present invention.
In the above figures: 1. a housing; 2. a volute; 3. a first heat exchanger; 4. a second heat exchanger; 5. a water pan; 6. a compressor; 7. a four-way valve; 8. an outdoor heat exchanger; 9. a first throttling device; 10. a second throttling device; 11. an inner fan; 12. an outer fan; 13. an indoor temperature sensor; 14. an air outlet temperature sensor.
Detailed Description
The invention is described in detail below by way of exemplary embodiments. It should be understood, however, that elements, structures and features of one embodiment may be beneficially incorporated in other embodiments without further recitation.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The air conditioner performs a refrigeration cycle of the air conditioner by using a compressor, a condenser, an expansion valve, and an evaporator. The refrigeration cycle includes a series of processes involving compression, condensation, expansion, and evaporation, and supplies refrigerant to the air that has been conditioned and heat-exchanged.
The compressor compresses a refrigerant gas in a high-temperature and high-pressure state and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and heat is released to the surrounding environment through the condensation process.
The expansion valve expands the liquid-phase refrigerant in a high-temperature and high-pressure state condensed in the condenser into a low-pressure liquid-phase refrigerant. The evaporator evaporates the refrigerant expanded in the expansion valve and returns the refrigerant gas in a low-temperature and low-pressure state to the compressor. The evaporator can achieve a cooling effect by heat-exchanging with a material to be cooled using latent heat of evaporation of a refrigerant. The air conditioner can adjust the temperature of the indoor space throughout the cycle.
The air conditioner includes an outdoor unit, which refers to a portion of a refrigeration cycle including a compressor and an outdoor heat exchanger, and an air conditioning indoor unit of the air conditioner including an indoor heat exchanger, and an expansion valve may be provided in the air conditioning indoor unit or the outdoor unit. The indoor heat exchanger and the outdoor heat exchanger serve as a condenser or an evaporator. When the indoor heat exchanger is used as a condenser, the air conditioner is used as a heater in a heating mode, and when the indoor heat exchanger is used as an evaporator, the air conditioner is used as a cooler in a cooling mode.
The air conditioning indoor unit is connected to an outdoor unit installed in an outdoor space through a duct. The outdoor unit may be provided with a compressor, an outdoor heat exchanger, an outdoor fan, an expander, and the like of a refrigeration cycle, and the indoor unit of the air conditioner may be provided with an indoor heat exchanger and an indoor fan.
Example one
Referring to fig. 1 to 5, the present embodiment proposes an air conditioner including: the heat exchanger comprises a compressor 6, a four-way valve 7, an outdoor heat exchanger 8, a first heat exchanger 3, a second heat exchanger 4, a first throttling device 9 and a second throttling device 10.
The compressor 6 is used for discharging high-pressure gaseous refrigerant, and the four-way valve 7 has four ports in total, and two ports of the four-way valve are respectively connected with a suction port and an exhaust port of the compressor 6.
An opening at one end of the outdoor heat exchanger 8 is communicated with the four-way valve 7, and an opening at the other end is connected with a second throttling device 10. One end of the second heat exchanger 4 is connected with a second throttling device 10, and the other end is connected with a first throttling device 9. One end of the first heat exchanger 3 is connected with a first throttling device 9, and the other end is connected with a four-way valve 7.
First heat exchanger 3 and second heat exchanger 4 all set up indoor, and first heat exchanger 3 and second heat exchanger 4 are indoor heat exchanger promptly for carry out the heat transfer to indoor air.
The first throttling device 9 and the second throttling device 10 adopt electronic expansion valves, which is beneficial to more conveniently adjusting the opening and closing degree and controlling the flow of the refrigerant.
The air conditioning system of the embodiment controls the opening and closing degree of the first throttling device 9 and the second throttling device 10, thereby realizing the heating, cooling and dehumidifying functions of the air conditioner.
In the heating function, the first throttle device 9 is fully open, in which case the first throttle device 9 has no throttling effect. The second throttling device 10 automatically adjusts the opening according to the superheat degree of the system, and plays a throttling role. In this case, the first heat exchanger 3 and the second heat exchanger 4 together form a condenser in series.
The high-pressure gaseous refrigerant discharged from the compressor 6 is controlled by the four-way valve 7 to flow through a series condenser composed of the first heat exchanger 3 and the second heat exchanger 4. The refrigerant releases heat at the first heat exchanger 3 and the second heat exchanger 4, and the inner fan 11 rotates to drive the indoor air to take away heat generated by heat release of the refrigerant. After heat exchange of the first heat exchanger 3 and the second heat exchanger 4, the high-pressure gaseous refrigerant is changed into a high-pressure liquid refrigerant, the high-pressure liquid refrigerant is throttled by the second throttling device 10 and then enters the outdoor heat exchanger 8, the outdoor heat exchanger 8 serves as an evaporator, the high-pressure liquid refrigerant is evaporated under corresponding low pressure, surrounding heat is absorbed, and finally the high-pressure liquid refrigerant flows back to the compressor 6 through the four-way valve 7.
When the air conditioner heats, the inner fan 11 rotates to enable indoor air entering the air conditioner to continuously carry out heat exchange through the first heat exchanger 3 and the second heat exchanger 4, and the indoor air is heated through the first heat exchanger 3 and the second heat exchanger 4 and is changed into hot air to be blown into the room through the inner fan 11 to achieve heating.
In the case of the refrigerating function, the first throttle device 9 is fully open, in which case the first throttle device 9 has no throttling effect. The second throttling device 10 automatically adjusts the opening according to the superheat degree of the system, and plays a throttling role. In this case, the first heat exchanger 3 and the second heat exchanger 4 together form an evaporator in series.
The high-pressure gaseous refrigerant sprayed from the compressor 6 is controlled by the four-way valve 7 to flow to the outdoor heat exchanger 8, the refrigerant releases heat at the outdoor heat exchanger 8, and the outdoor fan 12 rotates to drive the outdoor air to take away the heat generated by the heat release of the refrigerant. After heat is released by the outdoor heat exchanger 8, the high-pressure gaseous refrigerant is changed into a high-pressure liquid refrigerant, the high-pressure liquid refrigerant enters the second heat exchanger 4 and the first heat exchanger 3 after being throttled by the second throttling device 10, at the moment, the second heat exchanger 4 and the first heat exchanger 3 are used as evaporators connected in series, the high-pressure liquid refrigerant is evaporated under corresponding low pressure, surrounding heat is absorbed, and finally the high-pressure liquid refrigerant flows back to the compressor 6 through the four-way valve 7.
When the air conditioner refrigerates, the inner fan 11 rotates to enable indoor air entering the air conditioner to continuously carry out heat exchange through the first heat exchanger 3 and the second heat exchanger 4, and the indoor air is cooled through the first heat exchanger 3 and the second heat exchanger 4 to become cold air and is blown into the room by the inner fan 11 to be cooled.
In the dehumidification mode the second throttle device 10 is fully open, in which case the second throttle device 10 has no throttling effect. The first throttling device 9 automatically adjusts the opening according to the superheat degree of the system, and plays a throttling role. At this time, the second heat exchanger 4 and the outdoor heat exchanger 8 collectively function as an evaporator.
The compressor 6 discharges high-pressure gaseous refrigerant, the refrigerant reaches the outdoor heat exchanger 8 after passing through the four-way valve 7, the refrigerant releases heat at the outdoor heat exchanger 8, and the outer fan 12 rotates to drive outdoor air to take away heat generated by heat release of the refrigerant. At this time, the second throttling device 10 is in a fully open state, the second heat exchanger 4 has the same action as the outdoor heat exchanger 8, the high-pressure gaseous refrigerant flows through the second heat exchanger 4, after heat is released at the second heat exchanger 4, the high-pressure gaseous refrigerant is changed into the high-pressure liquid refrigerant, and enters the first heat exchanger 3 after being throttled by the first throttling device 9. The first heat exchanger 3 now acts as an evaporator, and the high-pressure liquid refrigerant evaporates at a correspondingly low pressure, absorbing ambient heat. And finally flows back to the compressor 6 through the four-way valve 7.
During dehumidification, the interior fan 11 rotates and makes the indoor air that gets into the air conditioner constantly carry out the heat exchange through first heat exchanger 3, and the moisture condensation in the indoor air is appeared, reaches the effect of cooling dehumidification. Then the cooled and cooled indoor air is blown by the inner fan 11 to flow through the second heat exchanger 4 for heating, and the heated indoor air is finally discharged from the air outlet, so that the process of cooling and dehumidifying is realized.
The air conditioner in this embodiment is specifically a duct machine, and further includes a casing 1, a volute 2, a water pan 5, an indoor temperature sensor 13, and an outlet air temperature sensor 14.
The casing 1 is provided with an air inlet and an air outlet, the air inlet is communicated with the air outlet, indoor air enters the air duct machine through the air inlet and is finally discharged to the indoor from the air outlet.
The volute 2 is arranged in the casing 1, the volute 2 is provided with an air suction opening and an air outlet, the volute 2 is internally provided with a driving motor and a fan, and the fan is driven to rotate by the driving motor, so that indoor air entering from the air inlet is driven to be sucked into the volute 2 through the air suction opening and then discharged from the air outlet.
The air outlet and the air outlet are correspondingly arranged, the first heat exchanger 3 is arranged between the air outlet and the air outlet, and the second heat exchanger 4 is arranged on one side, close to the air outlet, of the first heat exchanger 3.
The indoor temperature sensor 13 is arranged at an air inlet of the air duct machine and used for detecting indoor real-time environment temperature T1, and the air outlet temperature sensor 14 is arranged at an air outlet of the air duct machine and used for detecting air conditioner air outlet temperature T2.
When the air duct machine dehumidifies indoor air, the indoor air enters the air duct machine from the air inlet, and when the indoor air passes through the first heat exchanger 3, the first heat exchanger 3 cools the indoor air to condense and separate out moisture in the indoor air, so that the purpose of dehumidification is achieved. Because the temperature of the indoor air is reduced due to temperature reduction and dehumidification, the dehumidified indoor air is heated by the second heat exchanger 4, so that the temperature of the dehumidified indoor air is increased. Finally, the heated indoor air is discharged to the indoor through the air outlet, so that the dehumidification process is completed.
In the dehumidification mode, since the first heat exchanger 3 is used for cooling and dehumidifying and the second heat exchanger 4 is used for heating the dehumidified indoor air, there is a problem that cooling and heating are mutually offset between the two. Therefore, in order to solve the above problem, a spacing distance is provided between the first heat exchanger 3 and the second heat exchanger 4, so as to prevent the first heat exchanger 3 from directly contacting the second heat exchanger 4, and avoid weakening the dehumidification effect.
The spacing distance between the heat exchanger and the second heat exchanger 4 is D, and D is more than or equal to 5mm and less than or equal to 30 mm. When separation distance D is less than or equal to 5mm and less than or equal to 30mm, can guarantee that the mutual influence of refrigeration and heating between first heat exchanger 3 and second heat exchanger 4 is littleer, guarantee the not cooling dehumidification effect of tuber pipe machine, the noise that produces when reducing the indoor air and flowing, like the fin sound that indoor air and heat transfer fin produced, the separation distance D is selected in this embodiment to be 20 mm.
The edge of first heat exchanger 3 and casing 1 sealing connection to prevent that the indoor air from directly arranging to indoor not dehumidifying from the edge of first heat exchanger 3, be favorable to improving the dehumidification effect of indoor air.
In this embodiment, the second heat exchanger 4 is parallel to the first heat exchanger 3, and the indoor air is convenient for increase and the area of contact of the second heat exchanger 4 after being cooled and dehumidified by the first heat exchanger 3, thereby improving the heating effect of the indoor air.
A water receiving tray 5 is arranged below the first heat exchanger 3 and the second heat exchanger 4, a diversion trench is arranged on the water receiving tray 5, and the bottom end of the first heat exchanger 3 is lapped on the diversion trench. From this, the air conditioning indoor set that this embodiment is more current is provided with the guiding gutter through managing at water collector 5 to the comdenstion water that the condensation was appeared when passing through first heat exchanger 3 with the room air is through the guiding gutter drainage, thereby prevents that the comdenstion water from contacting second heat exchanger 4, avoids influencing the heating effect of second heat exchanger 4, and then satisfies the user to the control demand of air-out temperature.
Example two
Referring to fig. 1 to fig. 6, this embodiment provides a control method of an air conditioner, and it should be noted that the control method of the fresh air function of the air conditioner according to this embodiment is applicable to the air conditioner provided in this embodiment. The following describes a control method of an air conditioner provided in an embodiment of the present application.
The control method of the air conditioner in the embodiment comprises the following steps:
step S1 the user sets a preset temperature T.
Step S2 compares the preset temperature T with the indoor real-time ambient temperature T1 to determine the dehumidification mode.
And step S3, comparing the difference value delta T between the air conditioner outlet air temperature T2 and the indoor real-time environment temperature T1, and adjusting the rotating speed of the outdoor fan 12 according to the difference value.
After the rotation speed of the outdoor fan 12 is adjusted in step S4, the outdoor fan 12 is operated for a preset time t.
Step S5 loops executing S2, S3, and S4 until the dehumidification mode is turned off.
According to the control method of the air conditioner, the preset temperature T and the indoor real-time environment temperature T1 are compared to determine the dehumidification mode, then the difference value delta T between the air conditioner air outlet temperature T2 and the indoor real-time environment temperature T1 is compared, the rotating speed of the outdoor fan 12 is adjusted according to the difference value delta T, and therefore the air conditioner air outlet temperature is adjusted. The invention can realize the effects of constant temperature dehumidification, temperature rise dehumidification and temperature reduction dehumidification by adjusting the rotating speed of the outdoor fan 12, and meets the temperature control requirement of a user during dehumidification of the air conditioner.
When the preset temperature T is compared with the indoor real-time environment temperature T1 to determine the dehumidification mode, the temperature-increasing dehumidification mode is operated when T > T1. And when T is T1, operating the constant temperature dehumidification mode. And when T is less than T1, operating the cooling and dehumidifying mode.
And when the temperature-rising dehumidification mode is operated, comparing the difference value delta T between the air conditioner air-out temperature T2 and the indoor real-time environment temperature T1.
When Δ T is smaller than the first preset value a, the rotation speed of the outdoor fan 12 is reduced by m revolutions per second. When Δ T is equal to the first preset value a, the rotation speed of the outdoor fan 12 is not changed. When Δ T is greater than the first preset value a, the rotation speed of the outdoor fan 12 is increased by m revolutions per second. The value range of the first preset value a is more than 0 ℃ and less than or equal to 15 ℃, in this embodiment, a is 10 ℃, and m is 20 rpm.
In this embodiment, in the temperature-raising dehumidification mode, when the temperature difference Δ T is less than 10 ℃, in order to raise the air-out temperature, a stable temperature-raising dehumidification effect is achieved. At this time, the rotation speed of the outdoor fan 12 needs to be reduced, that is, the rotation speed of the outdoor fan 12 is reduced by 20 rpm, after the rotation speed of the outdoor fan 12 is reduced, the heat dissipation amount of the outdoor heat exchanger 8 is reduced, and the heat dissipation amount of the second heat exchanger 4 is increased, so that the outlet air temperature of the indoor air heated by the second heat exchanger 4 is increased.
Similarly, when the temperature difference delta T is larger than 10 ℃, the stable temperature rise and dehumidification effect is achieved for reducing the air outlet temperature. At this time, the rotation speed of the outdoor fan 12 needs to be increased, that is, the rotation speed of the outdoor fan 12 is increased by 20 rpm, after the rotation speed of the outdoor fan 12 is increased, the heat dissipation amount of the outdoor heat exchanger 8 is increased, and the heat dissipation amount of the second heat exchanger 4 is decreased, so that the outlet air temperature of the indoor air heated by the second heat exchanger 4 is relatively decreased. When the temperature difference Δ T is 10 ℃, the rotation speed of the outdoor fan 12 is not changed.
After the rotation speed of the outdoor fan 12 is adjusted, the preset time T is operated, where T is 30s in this embodiment, and then the indoor real-time environment temperature T1 is compared with the preset temperature T again, so as to re-determine the dehumidification mode, which is beneficial to the indoor real-time environment temperature T1 to be stably close to the preset temperature T.
And when the constant temperature dehumidification mode is operated, comparing the difference delta T between the air conditioner outlet air temperature T2 and the indoor real-time environment temperature T1.
When Δ T is smaller than the second preset value B, the rotation speed of the outdoor fan 12 is reduced by m revolutions per second. When Δ T is equal to the second preset value B, the rotation speed of the outdoor fan 12 is not changed. And when the delta T is larger than the second preset value B, the rotating speed of the outdoor fan 12 is increased by m revolutions per second. In this example, B is 0 ℃ and m is 20 rpm.
In this embodiment, in the constant temperature dehumidification mode, when the temperature difference Δ T is less than 0 ℃, in order to increase the outlet air temperature, a stable constant temperature dehumidification effect is achieved. At this time, the rotation speed of the outdoor fan 12 needs to be reduced, that is, the rotation speed of the outdoor fan 12 is reduced by 20 rpm, after the rotation speed of the outdoor fan 12 is reduced, the heat dissipation amount of the outdoor heat exchanger 8 is reduced, and the heat dissipation amount of the second heat exchanger 4 is increased, so that the outlet air temperature of the indoor air heated by the second heat exchanger 4 is increased.
Similarly, when the temperature difference delta T is larger than 0 ℃, the stable constant-temperature dehumidification effect is achieved for reducing the air outlet temperature. At this time, the rotation speed of the outdoor fan 12 needs to be increased, that is, the rotation speed of the outdoor fan 12 is increased by 20 rpm, after the rotation speed of the outdoor fan 12 is increased, the heat dissipation amount of the outdoor heat exchanger 8 is increased, and the heat dissipation amount of the second heat exchanger 4 is decreased, so that the outlet air temperature of the indoor air heated by the second heat exchanger 4 is relatively decreased. When the temperature difference Δ T is 0 ℃, the rotation speed of the outdoor fan 12 does not change.
After the rotation speed of the outdoor fan 12 is adjusted, the preset time T is operated, where T is 30s in this embodiment, and then the indoor real-time environment temperature T1 is compared with the preset temperature T again, so as to re-determine the dehumidification mode, which is beneficial to the indoor real-time environment temperature T1 to be stably close to the preset temperature T.
And when the temperature-reducing dehumidification mode is operated, comparing the difference delta T between the air conditioner outlet air temperature T2 and the indoor real-time environment temperature T1.
When Δ T is less than the third preset value C, the rotation speed of the outdoor fan 12 is reduced by m revolutions per second. When Δ T is equal to the third preset value C, the rotation speed of the outdoor fan 12 is not changed. And when the delta T is larger than the third preset value C, the rotating speed of the outdoor fan 12 is increased by m revolutions per second. The third preset value C is a value ranging from-15 ℃ to C < 0 ℃, and in this embodiment, C is-10 ℃ and m is 20 rpm.
In this embodiment, in the cooling and dehumidifying mode, when the temperature difference Δ T is less than-10 ℃, in order to increase the outlet air temperature, a stable cooling and dehumidifying effect is achieved. At this time, the rotation speed of the outdoor fan 12 needs to be reduced, that is, the rotation speed of the outdoor fan 12 is reduced by 20 rpm, after the rotation speed of the outdoor fan 12 is reduced, the heat dissipation amount of the outdoor heat exchanger 8 is reduced, and the heat dissipation amount of the second heat exchanger 4 is increased, so that the outlet air temperature of the indoor air heated by the second heat exchanger 4 is relatively increased.
Similarly, when the temperature difference delta T is more than-10 ℃, the stable cooling and dehumidifying effects are achieved for reducing the air outlet temperature. At this time, the rotation speed of the outdoor fan 12 needs to be increased, that is, the rotation speed of the outdoor fan 12 is increased by 20 rpm, after the rotation speed of the outdoor fan 12 is increased, the heat dissipation amount of the outdoor heat exchanger 8 is increased, and the heat dissipation amount of the second heat exchanger 4 is decreased, so that the outlet air temperature of the indoor air heated by the second heat exchanger 4 is relatively decreased. When the temperature difference Δ T is 0 ℃, the rotation speed of the outdoor fan 12 does not change.
After the rotation speed of the outdoor fan 12 is adjusted, the preset time T is operated, where T is 30s in this embodiment, and then the indoor real-time environment temperature T1 is compared with the preset temperature T again, so as to re-determine the dehumidification mode, which is beneficial to the indoor real-time environment temperature T1 to be stably close to the preset temperature T.
The control method of the air conditioner of the embodiment achieves the heat exchange amount of the control outdoor heat exchanger 8 and the second heat exchanger 4 by adjusting the rotating speed of the throttling device and the outdoor fan 12, and further controls the air outlet temperature of the air conditioner, so that the air conditioner has the functions of refrigeration and heating, constant-temperature dehumidification, temperature rise dehumidification and cooling dehumidification can be realized, the indoor environment temperature can be stably maintained at the preset temperature of a user, the change of the indoor temperature difference is reduced, and the use experience of the user is improved.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. An air conditioner, comprising:
a compressor for discharging a gaseous refrigerant;
the four-way valve, two of which are respectively connected with the air suction port and the air exhaust port of the compressor;
an opening at one end of the outdoor heat exchanger is communicated with the four-way valve, and an opening at the other end of the outdoor heat exchanger is connected with a second throttling device;
one end of the second heat exchanger is connected with the second throttling device, and the other end of the second heat exchanger is connected with the first throttling device; and
and one end of the first heat exchanger is connected with the first throttling device, and the other end of the first heat exchanger is connected with the four-way valve.
2. The air conditioner according to claim 1,
the first heat exchanger and the second heat exchanger are arranged in parallel.
3. The air conditioner according to claim 1,
and a spacing distance is arranged between the first heat exchanger and the second heat exchanger.
4. The air conditioner according to claim 3,
the spacing distance between the first heat exchanger and the second heat exchanger is D, and D is more than or equal to 5mm and less than or equal to 30 mm.
5. The air conditioner according to claim 1,
the first throttling device and the second throttling device both adopt electronic expansion valves.
6. The control method of an air conditioner according to any one of claims 1 to 5, comprising:
s1, setting a preset temperature T by a user;
s2, comparing the preset temperature T with the indoor real-time environment temperature T1 to determine a dehumidification mode;
s3, comparing the difference value delta T between the air conditioner outlet air temperature T2 and the indoor real-time environment temperature T1, and adjusting the rotating speed of the outdoor fan according to the difference value;
s4, after the rotation speed of the outdoor fan is adjusted, the outdoor fan operates for a preset time t;
s5 loops through S2, S3, and S4 until the dehumidification mode is turned off.
7. The control method of an air conditioner according to claim 6,
when the dehumidification mode is determined by comparing the preset temperature T with the indoor real-time environment temperature T1, and when T is more than T1, the temperature-rising dehumidification mode is operated;
when T is T1, operating a constant temperature dehumidification mode;
and when T is less than T1, operating the cooling and dehumidifying mode.
8. The control method of an air conditioner according to claim 7,
when the heating dehumidification mode is operated, comparing the difference value delta T between the air conditioner air outlet temperature T2 and the indoor real-time environment temperature T1;
when the delta T is smaller than a first preset value, the rotating speed of the outdoor fan is reduced by m revolutions per second;
when the delta T is equal to a first preset value, the rotating speed of the outdoor fan is unchanged;
and when the delta T is larger than a first preset value, the rotating speed of the outdoor fan is increased by m revolutions per second.
9. The control method of an air conditioner according to claim 7,
when the constant-temperature dehumidification mode is operated, comparing the difference delta T between the air conditioner air outlet temperature T2 and the indoor real-time environment temperature T1;
when the delta T is smaller than a second preset value, the rotating speed of the outdoor fan is reduced by m revolutions per second;
when the delta T is equal to a second preset value, the rotating speed of the outdoor fan is unchanged;
and when the delta T is larger than a second preset value, the rotating speed of the outdoor fan is increased by m revolutions per second.
10. The control method of an air conditioner according to claim 7,
when the cooling and dehumidifying mode is operated, comparing the difference value delta T between the air conditioner outlet air temperature T2 and the indoor real-time environment temperature T1;
when the delta T is smaller than a third preset value, the rotating speed of the outdoor fan is reduced by m revolutions per second;
when the delta T is equal to a third preset value, the rotating speed of the outdoor fan is unchanged;
and when the delta T is larger than a third preset value, the rotating speed of the outdoor fan is increased by m revolutions per second.
CN202011255694.5A 2020-11-11 2020-11-11 Air conditioner and control method thereof Pending CN112377986A (en)

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Address before: 266000 No. 151, Zhuzhou Road, Laoshan District, Shandong, Qingdao

Applicant before: HISENSE (SHANDONG) AIR-CONDITIONING Co.,Ltd.