CN114688646A - Air conditioner, air outlet temperature increasing method of air conditioner and storage medium - Google Patents
Air conditioner, air outlet temperature increasing method of air conditioner and storage medium Download PDFInfo
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- CN114688646A CN114688646A CN202011595691.6A CN202011595691A CN114688646A CN 114688646 A CN114688646 A CN 114688646A CN 202011595691 A CN202011595691 A CN 202011595691A CN 114688646 A CN114688646 A CN 114688646A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
- F24F5/001—Compression cycle type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/18—Arrangement or mounting of grates or heating means
- F24H9/1854—Arrangement or mounting of grates or heating means for air heaters
- F24H9/1863—Arrangement or mounting of electric heating means
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- 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
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- 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
- F25B39/00—Evaporators; Condensers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside air
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Abstract
The invention discloses an air conditioner, an air outlet temperature lifting method of the air conditioner and a storage medium, wherein the air conditioner comprises the following components: the compressor comprises a return air port and an exhaust port; the first indoor heat exchanger is communicated between the return air port and the exhaust port of the compressor; the vortex tube comprises a vortex tube inlet, a hot end outlet and a cold end outlet, the vortex tube inlet is connected between a return air port and an exhaust port of the compressor, the hot end outlet is communicated with the return air port of the compressor, the cold end outlet is communicated with the return air port, and the hot end outlet is provided with a flow regulating valve; the second indoor heat exchanger is connected between the hot end outlet of the vortex tube and the return air port of the compressor, and the first indoor heat exchanger and the second indoor heat exchanger are both arranged in an indoor unit of the air conditioner; the first control valve is communicated with the vortex tube inlet. The invention can avoid the high-frequency starting of the compressor in the heating mode, thereby reducing the risk of liquid impact of the compressor and effectively prolonging the service life of the compressor.
Description
Technical Field
The invention relates to the technical field of refrigeration, in particular to an air conditioner, an air outlet temperature increasing method of the air conditioner and a storage medium.
Background
Most areas in the south of the Yangtze river in China are not provided with heating air, and air conditioners are generally adopted for heating when the temperature of rooms is low in winter. When the air conditioner is started to operate in a heating mode, the compressor slowly increases the frequency, and the air conditioner can blow out hot air for a long time due to low outdoor temperature, so that the heating experience of a user is seriously restricted. In order to enable the air conditioner to quickly discharge hot air after the heating mode is opened, a high-frequency starting mode of a compressor is usually adopted, so that the air conditioner system quickly establishes high-low pressure difference, the exhaust temperature is increased, and the time for blowing the hot air after the air conditioner enters the heating mode is shortened. Under the natural state, the refrigerant in the air conditioning system usually toward the low-temperature side gathering deposit, winter outdoor temperature is lower, and the refrigerant mainly is retained in the outdoor unit with liquid form, and when the compressor high frequency starts, the liquid refrigerant in the outdoor unit is inhaled to the instantaneous stronger suction effect of compressor, probably leads to instantaneous liquid volume of returning too big, has increased the risk of compressor liquid attack, and frequent high frequency starts can influence the reliability and the life of compressor.
Disclosure of Invention
The invention mainly aims to provide an air conditioner, an air outlet temperature lifting method of the air conditioner and a storage medium, and aims to solve the problem that the service life of a compressor is influenced by a mode of shortening hot air outlet time of the air conditioner by utilizing high-frequency starting of the compressor.
To achieve the above object, the present invention provides an air conditioner including:
a compressor including a return air port and an exhaust port;
the first indoor heat exchanger is communicated between the return air port and the exhaust port of the compressor;
the vortex tube comprises a vortex tube inlet, a hot end outlet and a cold end outlet, the vortex tube inlet is connected between a return air port and an exhaust port of the compressor, the hot end outlet is communicated with the return air port of the compressor, the cold end outlet is communicated with the return air port, and the hot end outlet is provided with a flow regulating valve;
the second indoor heat exchanger is connected between the hot end outlet of the vortex tube and the return air port of the compressor, and the first indoor heat exchanger and the second indoor heat exchanger are both arranged in an indoor unit of the air conditioner;
a first control valve in communication with the vortex tube inlet.
Optionally, the air conditioner includes an indoor unit, and the first indoor heat exchanger and the second indoor heat exchanger are both located in the same air duct of the indoor unit.
Optionally, the air conditioner further comprises a second control valve connected between the cold end outlet and the return air port.
Optionally, the air conditioner further comprises an electric auxiliary heating device and an indoor fan, wherein the electric auxiliary heating device is arranged in the indoor unit and is positioned on the air suction side of the indoor fan.
The invention also provides an air outlet temperature lifting method of the air conditioner, which is applied to the air conditioner, and comprises the following steps:
when the air conditioner enters a heating mode, acquiring indoor temperature and/or outdoor temperature;
and when the indoor temperature and/or the outdoor temperature are/is smaller than or equal to a first preset temperature, controlling the flow regulating valve to be opened to a first opening value, and controlling the first control valve to be opened to a second opening value.
Optionally, the step of controlling the flow regulating valve to open to the first opening value and the step of controlling the first control valve to open to the second opening value simultaneously or subsequently further comprises the steps of:
and controlling the second control valve to open to a third opening value.
Optionally, the step of controlling the second control valve to open to the third opening value is followed by:
when the temperature of the first indoor heat exchanger and/or the second indoor heat exchanger reaches a second preset temperature, controlling the flow regulating valve to be opened to a fourth opening value and controlling the first control valve to be opened to a fifth opening value;
or when the temperature of the first indoor heat exchanger and/or the second indoor heat exchanger reaches a second preset temperature, controlling the outlet of the hot end of the vortex tube to be opened to a fourth opening value, controlling the first control valve to be opened to a fifth opening value and controlling the second control valve to be opened to a sixth opening value;
the ratio of the sixth opening value to the fifth opening value is greater than the ratio of the third opening value to the second opening value, and the second preset temperature is higher than the first preset temperature.
Optionally, the step of controlling the opening of the outlet of the hot end of the vortex tube to the fourth opening value, the step of controlling the opening of the first control valve to the fifth opening value, and the step of controlling the opening of the second control valve to the sixth opening value further includes:
when a preset condition is met, closing the first control valve and the second control valve;
wherein the preset condition comprises at least one of:
the exhaust temperature of the compressor reaches the preset exhaust temperature;
the condensation temperature of the first indoor heat exchanger reaches a preset condensation temperature;
and the duration of the first control valve opening to the fifth opening value and the second control valve opening to the sixth opening value is controlled to reach a first preset duration.
Optionally, the step of closing the first control valve and the second control valve further comprises:
and closing the flow regulating valve after closing the first control valve and the second control valve for a second preset time.
Optionally, after the steps of controlling the outlet of the hot end of the vortex tube to be opened to a fourth opening value, controlling the first control valve to be opened to a fifth opening value, and controlling the second control valve to be opened to a sixth opening value, the method further includes:
and when the current indoor temperature and/or the current outdoor temperature are/is less than or equal to the first preset temperature, starting the electric auxiliary heating device.
The invention further provides a storage medium, wherein the storage medium stores an outlet air temperature raising program of the air conditioner, and the outlet air temperature raising program of the air conditioner is executed by the processor to realize each step of the outlet air temperature raising method of the air conditioner.
The air conditioner provided by the invention is connected between the air return port and the exhaust port of the compressor by arranging the vortex tube, the vortex tube comprises a vortex tube inlet, a hot end outlet and a cold end outlet, the vortex tube inlet is connected between the air return port and the exhaust port of the compressor, the hot end outlet is communicated with the air return port of the compressor, the cold end outlet is communicated with the air return port, and the hot end outlet is provided with a flow regulating valve; the second indoor heat exchanger is connected between the outlet of the hot end of the vortex tube and the return air port of the compressor, the first indoor heat exchanger and the second indoor heat exchanger are both arranged in an indoor unit of the air conditioner, and the first control valve is communicated with the inlet of the vortex tube. The vortex tube can flow high-temperature fluid from the hot end outlet and flow low-temperature fluid from the cold end outlet, so that the hot end outlet communicated with the first indoor heat exchanger can discharge high-temperature refrigerant to the second indoor heat exchanger, when the first control valve and the flow regulating valve are opened, the high-temperature refrigerant flowing out of the hot end outlet can enter the second indoor heat exchanger and then is discharged to the air return port of the compressor, so that the second indoor heat exchanger can be rapidly heated, the outlet air temperature of the indoor unit can be rapidly raised by depending on the high-temperature refrigerant provided by the vortex tube even if the compressor is started at a low or medium frequency, the indoor temperature is rapidly raised, and the situation that the compressor needs to be started at a high frequency to realize rapid hot air outlet under the low-temperature condition can be avoided. Therefore, the high-frequency starting of the compressor in the heating mode can be avoided, the risk of liquid impact of the compressor is reduced, the running reliability of the compressor is effectively improved, and the service life of the compressor is effectively prolonged.
Drawings
FIG. 1 is a schematic diagram of a heat exchange flow path of an air conditioner according to the present invention;
FIG. 2 is a schematic structural diagram of a vortex tube of the air conditioner of the present invention;
FIG. 3 is a schematic view showing the temperature rise and drop of compressed air in a vortex tube of an air conditioner according to the present invention;
FIG. 4 is a schematic flow chart illustrating a method for increasing an outlet air temperature of an air conditioner according to a first embodiment of the present invention;
FIG. 5 is a schematic flow chart illustrating a method for increasing an outlet air temperature of an air conditioner according to a second embodiment of the present invention;
fig. 6 is a schematic flow chart of an outlet air temperature raising method of an air conditioner according to a third embodiment of the present invention.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 10 | |
51 | Vortex |
| 11 | |
52 | |
| 12 | |
53 | |
| 13 | |
54 | |
| 14 | |
55 | |
| 21 | First |
60 | Auxiliary |
| 22 | Second |
70 | |
| 30 | |
80 | |
| 40 | Four- |
90 | |
| 50 | Vortex tube |
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The main technical scheme of the embodiment of the invention is as follows: this embodiment is applied to an air conditioner, as shown in fig. 1, which includes: a compressor 10, the compressor 10 including a return air port 14 and an exhaust port 13; a first indoor heat exchanger 21, the first indoor heat exchanger 21 communicating between the return port 14 and the discharge port 13 of the compressor 10; a vortex tube 50, as shown in fig. 2, the vortex tube 50 includes a vortex tube inlet 51, a hot end outlet 52 and a cold end outlet 53, the vortex tube inlet 51 is connected between the return air port 14 and the exhaust port 13 of the compressor 10, the hot end outlet 52 is communicated with the return air port 14 of the compressor 10, the cold end outlet 53 is communicated with the return air port 14, and the hot end outlet 52 is provided with a flow regulating valve 54; the second indoor heat exchanger 22 is connected between the hot end outlet 52 of the vortex tube 50 and the return air port 14 of the compressor 10, and both the first indoor heat exchanger 21 and the second indoor heat exchanger 22 are installed in an indoor unit (not shown in the figure) of the air conditioner; a first control valve 80, said first control valve 80 communicating with said vortex tube inlet 51.
For a better understanding of the above technical solutions, exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
The air conditioner provided by this embodiment further includes a four-way valve 40 and an outdoor heat exchanger 30, the four-way valve 40 has a first valve port to a fourth valve port (not labeled in the figure), the second valve port is connected to the exhaust port 13 of the compressor 10, the fourth valve port is connected to the return air port 14 of the compressor 10, in the heating mode, the first valve port is communicated with the fourth valve port, the second valve port is communicated with the third valve port, the first indoor heat exchanger 21 is communicated between the return air port 14 and the exhaust port 13 of the compressor 10, the outdoor heat exchanger 30 is connected between the first indoor heat exchanger 21 and the exhaust port 13 of the compressor 10, a refrigerant input end of the outdoor heat exchanger is connected to a refrigerant output end of the first indoor heat exchanger 21, and a refrigerant output end of the outdoor heat exchanger 30 is connected to the first valve port to form a heat exchange loop.
The vortex tube 50 is connected between the return air port 14 and the exhaust port 13 of the compressor 10 through a refrigerant tube, and a bypass branch capable of introducing the refrigerant from a vortex tube inlet 51 to the return air port 14 after passing through the vortex tube 50 is formed. The vortex tube 50 is provided with a vortex tube inlet 51, a hot end outlet 52, a cold end outlet 53 and a vortex chamber 55, the vortex tube inlet 51, the hot end outlet 52 and the cold end outlet 53 are all communicated with the vortex chamber 55, a nozzle (not marked in the figure) is arranged in the vortex tube inlet 51, the nozzle sprays the refrigerant in the vortex tube inlet 51 into the vortex chamber 55 to form free vortex high-speed fluid, the refrigerant enters the vortex tube inlet 51 and then expands and accelerates to enter the vortex chamber 55 through the nozzle to flow to the hot end outlet 52 in a free vortex type high-speed rotation mode, namely, the refrigerant enters the vortex chamber 55 in a free vortex type at the moment, the inner layer fluid and the outer layer fluid generate speed difference to generate momentum and energy exchange through viscous friction, the outer layer fluid obtains energy from the inner layer fluid to be heated and then is discharged from the hot end outlet 52, the inner layer fluid returns to the cold end outlet 53 under the action of pressure difference and transmits the energy to the outer layer fluid to be cooled, so that high temperature fluid can flow from the warm end outlet 52 and low temperature fluid can flow from the cold end outlet 53. The hot end outlet 52 is provided with a flow regulating valve 54, and the cold and heat effects of the hot end outlet 52 and the cold end outlet 53 of the vortex tube 50 can be changed by regulating the opening degree of the flow regulating valve 54. In practice, the flow control valve 54 may be a hot end adjustment nut that is threaded into the hot end outlet 52. The second indoor heat exchanger 22 is connected between the hot end outlet 52 of the vortex tube 50 and the return air port 14 of the compressor 10, so that the high-temperature refrigerant flowing out of the hot end outlet 52 needs to pass through the second indoor heat exchanger 22 and then be discharged into the return air port 14 of the compressor 10, and the second indoor heat exchanger 22 can be rapidly heated. The second indoor heat exchanger 22 and the first indoor heat exchanger 21 are both arranged in the indoor unit to participate in heat exchange of indoor air, the indoor unit further comprises an indoor fan, air flow entering the indoor fan firstly flows through the first indoor heat exchanger 21 and the second indoor heat exchanger 22, the second indoor heat exchanger 22 obtains the heating effect of a high-temperature refrigerant flowing out of the hot end outlet 52, the condensing temperature on the surface of the second indoor heat exchanger can be rapidly increased to heat the air flow entering the fan, and the indoor temperature can be rapidly increased. In this embodiment, the first indoor heat exchanger 21 and the second indoor heat exchanger 22 are located in the same air duct of the indoor unit, so that the air flow entering the indoor fan can first pass through the first indoor heat exchanger 21 and the second indoor heat exchanger 22, and the positions of the first indoor heat exchanger 21 and the second indoor heat exchanger 22 are not particularly limited, for example, when the indoor unit is a cabinet type indoor unit, the first indoor heat exchanger 21 and the second indoor heat exchanger 22 are installed at upper and lower positions, and when the indoor unit is a wall-mounted indoor unit, the indoor unit can be installed at left and right sides, and is mainly determined according to the positions of an air inlet and an air outlet of the indoor unit, as long as the air flow heated by the first indoor heat exchanger 21 and the second indoor heat exchanger 22 can enter the indoor fan. In an alternative embodiment, the second indoor heat exchanger 22 may be installed on the return air side of the first indoor heat exchanger 21 to preheat the air flow entering the first indoor heat exchanger 21 and increase the temperature of the air flow entering the first indoor heat exchanger 21. It is understood that the first indoor heat exchanger 21 is a main indoor heat exchanger, the second indoor heat exchanger 22 is an auxiliary indoor heat exchanger, once the temperature of the first indoor heat exchanger 21 is raised to the first preset temperature, the heating of the indoor air is sufficiently realized only by the heat exchange capability of the first indoor heat exchanger 21, and after that, the second indoor heat exchanger 22 may be turned off, so that the second indoor heat exchanger 22 may be a small-sized condenser.
As shown in fig. 3, the temperature rise and the temperature drop of the compressed air in the vortex tube 50 are closely related to the cold flow ratio epsilon (the cold flow ratio epsilon is the ratio of the flow of the cold end outlet 53 to the flow of the vortex tube inlet 51, epsilon is Mc/Min, Mc is the flow of the cold end outlet 53, and Min is the flow of the vortex tube inlet 51), so the size of the cold flow ratio epsilon can be adjusted by adjusting the flow adjusting valve 54. As can be seen from the above equation, the cold flow ratio epsilon is proportional to the cold outlet 53 flow, and as the cold outlet 53 flow is higher and the temperature is lower, the warm outlet 52 flow is lower and the temperature is higher. The characteristic of the vortex tube 50 enables the hot end outlet 52 communicated with the return air port 14 of the compressor 10 to discharge high-temperature refrigerant to the compressor 10, and as long as the opening degree of the flow regulating valve 54 on the hot end outlet 52 is proper, the compressor 10 can be quickly heated by the high-temperature refrigerant provided by the vortex tube 50 even if the compressor 10 is started at medium and low frequency, and the compressor 10 can be prevented from being quickly blown out hot air when the compressor 10 is started at high frequency under the low-temperature condition. Therefore, the air conditioner provided by the embodiment can avoid the high-frequency starting of the compressor in the heating mode, thereby reducing the risk of liquid impact of the compressor 10 and effectively prolonging the service life of the compressor 10.
In this embodiment, the hot end outlet 52 of the vortex tube inlet 51 is communicated with the return port 14 of the compressor 10, and the cold end outlet 53 of the vortex tube 50 is communicated with the return port 14 of the compressor 10, so that once the compressor 10 is started, a refrigerant can be input into the vortex tube 50, and after entering the vortex tube 50, the refrigerant discharges a high-temperature refrigerant from the hot end outlet 52 to the return port 14 of the compressor 10 to increase the return temperature, so that the temperature of the refrigerant at the exhaust port 13 after being compressed by the compressor 10 is rapidly increased, and the high-temperature refrigerant is provided to the second indoor heat exchanger 22 to rapidly increase the indoor temperature. The first control valve 80 communicates with the vortex tube inlet 51 to control the amount of flow into the vortex tube 50. In an alternative embodiment, the vortex tube inlet 51 is connected to the exhaust port 13 of the compressor 10, so that the refrigerant can rapidly enter the vortex tube 50, in other embodiments, the vortex tube inlet 51 may be connected between the exhaust port 13 of the compressor 10 and the throttling device 70, and the throttling device 70 is installed between the indoor unit and the outdoor heat exchanger 30 to reduce the temperature of the refrigerant entering the outdoor heat exchanger 30.
In a further embodiment, the air conditioner further comprises a second control valve 90, the second control valve 90 is connected between the cold end outlet 53 of the vortex tube 50 and the return port 14 of the compressor 10, the arrangement is such that the flow rate from the cold end outlet 53 of the vortex tube 50 is controllable, and when the second control valve 90 and the first control valve 80 are closed and the flow regulating valve 54 is opened, the residual refrigerant in the vortex tube 50 can further flow from the hot end outlet 52 into the return port 14 of the compressor 10, so as to avoid the refrigerant remaining in the vortex tube 50.
In one embodiment, the air conditioner further includes an auxiliary heat exchanging device 60, and the auxiliary heat exchanging device 60 is connected between the cold-end outlet 53 of the vortex tube 50 and the return air port 14 of the compressor 10 to heat the refrigerant flowing through the auxiliary heat exchanging device 60.
The auxiliary heat exchange device 60 may heat the refrigerant flowing therethrough, for example, the refrigerant flowing out from the cold end outlet 53 of the vortex tube 50, in this embodiment, a refrigerant tube connecting the refrigerant outlet of the first indoor heat exchanger and the return air port 14 of the compressor 10 may also extend from the auxiliary heat exchange device 60, so that the auxiliary heat exchange device 60 heats the refrigerant, and the compressor 10 is rapidly warmed. The auxiliary heat exchange device 60 provided in this embodiment may be an electric heater, or the auxiliary heat exchange device 60 may be a heat exchange fin, the heat exchange fin is made of a metal sheet with a high heat conductivity coefficient, such as a copper sheet or an aluminum sheet, and at this time, the heat exchange fin may be installed on the first refrigerant pipeline 11 connected to the refrigerant output end of the indoor heat exchanger and the second refrigerant pipeline 12 connected to the cold end outlet 53, so that two paths of refrigerants exchange heat through the heat exchange fin, and the temperature of the refrigerant flowing out from the refrigerant outlet is increased. Here, the first refrigerant line 11 is connected between the indoor heat exchanger and the outdoor heat exchanger 30 of the air conditioner, and the second refrigerant line 12 is connected between the cold-end outlet 53 of the vortex tube 50 and the return port 14 of the compressor 10.
As an embodiment, the air conditioner includes an indoor fan (not shown) and an electric auxiliary heating device (not shown), the electric auxiliary heating device and the indoor fan are installed in an indoor unit (not shown) of the air conditioner, and the electric auxiliary heating device is located between the indoor fan and a return air inlet of the indoor unit.
In this embodiment, the indoor unit may be a wall-mounted indoor unit or a cabinet-type indoor unit, and the electric auxiliary heating device is located between the indoor fan and the air return opening of the indoor unit, and heats air flowing into the indoor fan to rapidly raise the indoor temperature. Specifically, the electric auxiliary heating device may be located between the first indoor heat exchanger 21 and the indoor fan, or the electric auxiliary heating device may be located between the second indoor heat exchanger 22 and the indoor fan.
Based on the air conditioner, as shown in fig. 4 and with reference to fig. 1 to 3, the present invention further provides a first embodiment of an outlet air temperature increasing method of an air conditioner, where a controller of the air conditioner is used as an execution main body in the embodiment, and the outlet air temperature increasing method of the air conditioner includes:
s1: when the air conditioner enters a heating mode, acquiring indoor temperature and/or outdoor temperature;
s21: and when the indoor temperature and/or the outdoor temperature are/is smaller than or equal to a first preset temperature, controlling the flow regulating valve to be opened to a first opening value, and controlling the first control valve to be opened to a second opening value.
In this embodiment, whether the ambient temperature exceeds the threshold value or not may be determined to control the opening of the flow regulating valve 54, where the ambient temperature includes at least one of an indoor temperature and an outdoor temperature, and when the ambient temperature is less than or equal to a preset temperature, it indicates that the current ambient temperature is low and the user is in a cold state, at this time, the air conditioner needs to be heated quickly after a heating mode is performed to improve user experience, and the first preset temperature (e.g., 10 ° or 5 ° is preset in the controller of the air conditioner. When the second control valve 90 is not provided, only the flow regulating valve 54 or the first control valve 80 may be adjusted, the flow regulating valve 54 corresponding to the first opening value, and the first control valve 80 corresponding to the second opening value.
If the second control valve 90 is provided, as shown in fig. 5, based on the first embodiment, in the second embodiment, when the ambient temperature is less than or equal to the preset ambient temperature, the flow regulating valve 54, the first control valve 80 and the second control valve 90 are adjusted simultaneously, that is, the step of opening the first control valve 80 to the second opening value while or after the step of opening the flow regulating valve 54 to the first opening value, is controlled, further comprising the steps of:
s22: the second control valve is controlled to open to a third opening value.
The second control valve 90 corresponds to the third opening degree value, and the first opening degree value, the second opening degree value and the third opening degree value may be stored in a memory of the air conditioner in a form of a mapping table in association with a reference parameter, where the reference parameter may be at least one of a discharge temperature of the compressor 10, a return air temperature of the compressor 10, an outlet air temperature of the first indoor heat exchanger 21 and an ambient temperature, and may also be obtained by calculation using the reference parameter, and may be determined as needed. The refrigerant flows into the vortex tube 50 from the vortex tube inlet 51, the refrigerant enters the vortex tube inlet 51 and then enters the vortex chamber 55 through the nozzle expansion acceleration, flows to the hot end outlet 52 in a free vortex type high-speed rotating mode, the inner layer fluid and the outer layer fluid generate speed difference and generate momentum and energy exchange through viscous friction, the outer layer fluid obtains energy from the inner layer fluid and is discharged from the hot end outlet 52 after being heated, the inner layer fluid returns to flow to the cold end outlet 53 under the action of pressure difference and is cooled by transferring the energy to the outer layer fluid, so that the high-temperature fluid can flow out of the hot end outlet 52, and the low-temperature fluid can flow out of the cold end outlet 53. The first opening value determines the cooling and heating effects of the hot end outlet 52 and the cold end outlet 53 of the vortex tube 50, and the smaller the first opening value, the higher the temperature of the refrigerant flowing out of the hot end outlet 52. In this embodiment, the second indoor heat exchanger 22 is connected between the hot end outlet 52 of the vortex tube 50 and the return air port 14 of the compressor 10, and after the first control valve 80 and the flow regulating valve 54 are opened, the high-temperature refrigerant flowing out of the hot end outlet 52 can enter the second indoor heat exchanger 22 and then be discharged to the return air port 14 of the compressor 10, so that the second indoor heat exchanger 22 can be rapidly heated, even if the compressor 10 is started at a low or medium frequency, the outlet air temperature of the indoor unit can be rapidly raised by the high-temperature refrigerant provided by the vortex tube 50, the indoor temperature can be rapidly raised, and the situation that the compressor 10 needs to be started at a high frequency to rapidly discharge hot air at a low temperature can be avoided. Therefore, the air conditioner provided by the embodiment can avoid the high-frequency start of the compressor 10 in the heating mode, thereby reducing the risk of liquid impact of the compressor 10, and effectively improving the operational reliability and the service life of the compressor 10.
Based on the second embodiment, as shown in fig. 6, the present invention provides a third embodiment of a method for increasing an outlet air temperature of an air conditioner:
the step of controlling the second control valve to open to the third opening value is followed by:
s3: when the temperature of the first indoor heat exchanger and/or the second indoor heat exchanger reaches a second preset temperature;
s4: controlling the flow regulating valve to be opened to a fourth opening value and controlling the first control valve to be opened to a fifth opening value; or when the temperature of the first indoor heat exchanger and/or the second indoor heat exchanger reaches a second preset temperature, controlling the outlet of the hot end of the vortex tube to be opened to a fourth opening value, controlling the first control valve to be opened to a fifth opening value and controlling the second control valve to be opened to a sixth opening value;
the ratio of the sixth opening value to the fifth opening value is greater than the ratio of the third opening value to the second opening value, and the second preset temperature is higher than the first preset temperature.
In the heating mode, in order to avoid the air conditioner blowing cold air, generally, when the temperature of the first indoor heat exchanger 21 and/or the second indoor heat exchanger 22 rises to the second preset temperature, then the air conditioner is controlled to discharge air to the indoor, so that the user feels that the air blown out by the air conditioner is hot air instead of low-temperature cold air, therefore, when the temperature of the first indoor heat exchanger 21 and/or the second indoor heat exchanger 22 has not reached the second preset temperature, the vortex tube 50 hot end outlet 52 is opened to a first opening value, the first control valve 80 is opened to a second opening value, the second control valve is opened to a third opening value, at this time, the first indoor heat exchanger 21 has the refrigerant flowing therethrough from the compressor 10, the second indoor heat exchanger 22 has the refrigerant flowing therethrough from the warm-end outlet 52, but the indoor fan is not activated, the first indoor heat exchanger 21 and the second indoor heat exchanger 22 may be rapidly raised to the second preset temperature. When the temperature of the first indoor heat exchanger 21 and/or the second indoor heat exchanger 22 rises to a second preset temperature, the air conditioner starts to discharge air to the indoor space, and at the moment, the flow regulating valve 54 is controlled to be opened to a fourth opening value, and the first control valve 80 is controlled to be opened to a fifth opening value; or, the outlet 52 of the hot end of the vortex tube 50 is opened to a fourth opening value, the first control valve 80 is opened to a fifth opening value, the second control valve is opened to a sixth opening value, and the first indoor heat exchanger 21 and the second indoor heat exchanger 22 heat the air flow entering the indoor fan, so as to quickly raise the outlet air temperature of the indoor unit. In this embodiment, the second preset temperature is higher than the first preset temperature, and the ratio of the sixth opening value to the fifth opening value is greater than the ratio of the third opening value to the second opening value, because the cold flow ratio epsilon is proportional to the flow of the cold end outlet 53, when the flow of the cold end outlet 53 is smaller, the temperature of the refrigerant flowing out of the cold end outlet 53 is lower, the flow of the hot end outlet 52 is smaller, and the temperature of the refrigerant flowing out of the hot end outlet 52 is higher, when the temperature of the first indoor heat exchanger 21 and/or the second indoor heat exchanger 22 is lower than the second preset temperature, the cold flow ratio epsilon of the vortex tube 50 is made larger, so that the hot end outlet 52 can output the refrigerant with a high temperature, and although the flow of the refrigerant at the hot end outlet 52 is smaller, the second heat exchanger can be heated quickly because the indoor unit does not output air; when the temperature of the first indoor heat exchanger 21 and/or the second indoor heat exchanger 22 reaches the second preset temperature, the cold flow ratio epsilon of the vortex tube 50 is reduced to ensure that the quantity of the refrigerant output by the hot end outlet 52 is increased, and although the temperature of the refrigerant at the hot end outlet 52 is reduced at this time, the outlet air temperature of the indoor unit can be increased as soon as possible in an auxiliary manner because the indoor unit starts to emit hot air.
Based on the third embodiment, the present invention provides a fourth embodiment of a method for increasing an outlet air temperature of an air conditioner:
the steps of controlling the opening of the hot end outlet 52 of the vortex tube 50 to the fourth opening value, controlling the opening of the first control valve 80 to the fifth opening value, and controlling the opening of the second control valve 90 to the sixth opening value further comprise:
when a preset condition is satisfied, closing the first control valve 80 and the second control valve 90;
wherein the preset condition comprises at least one of:
the discharge temperature of the compressor 10 reaches a preset discharge temperature;
the condensing temperature of the first indoor heat exchanger 21 reaches a preset condensing temperature;
the first control valve 80 is opened to a fifth opening value and the second control valve 90 is controlled to be opened to a sixth opening value for a first preset duration.
When the exhaust temperature of the compressor 10 reaches the preset exhaust temperature, or the condensation temperature of the first indoor heat exchanger 21 reaches the preset condensation temperature, or the duration of the first control valve 80 being opened to the fifth opening value and controlling the second control valve 90 being opened to the sixth opening value reaches the first preset duration, or the outlet air temperature of the first indoor heat exchanger 21 reaches the preset temperature, it is indicated that the first indoor heat exchanger 21 has the capability of outputting enough heating capacity, and can heat a large amount of heat to rapidly raise the indoor temperature, at this time, the first control valve 80 and the second control valve 90 can be closed, and the discharge of the high-temperature refrigerant to the compressor 10 is stopped.
Based on the third embodiment, the present invention provides a fifth embodiment of a method for increasing an outlet air temperature of an air conditioner:
after the steps of controlling the opening of the hot end outlet 52 of the vortex tube 50 to the fourth opening value, controlling the opening of the first control valve 80 to the fifth opening value, and controlling the opening of the second control valve 90 to the sixth opening value, the method further comprises:
and when the current indoor temperature and/or the current outdoor temperature are/is less than or equal to the first preset temperature, starting the electric auxiliary heating device. The electric auxiliary heating device is positioned on the air suction side of the indoor fan, and heats air flowing into the indoor fan after the electric auxiliary heating device and the indoor fan are started so as to quickly improve the indoor temperature. When the current indoor temperature and/or the outdoor temperature is higher than the first preset temperature, the electric auxiliary heating device can be closed, and the air conditioner enters normal heating.
Based on the second embodiment, the present invention provides a sixth embodiment of a method for increasing an outlet air temperature of an air conditioner:
the step of closing the first control valve 80 and the second control valve 90 further includes:
the flow control valve 54 is closed after the first control valve 80 and the second control valve 90 are closed for a second period of time.
In this embodiment, after the second time period elapses after the first control valve 80 and the second control valve 90 are closed, the flow regulating valve 54 is closed, that is, the time period after the first control valve 80 and the second control valve 90 are closed is less than the second time period, the flow regulating valve 54 is opened to allow the refrigerant remaining in the vortex tube 50 to further flow from the hot end outlet 52 into the return air port 14 of the compressor 10, so as to prevent the refrigerant from remaining in the vortex tube 50.
The invention further provides a storage medium, the storage medium stores an outlet air temperature raising program of the air conditioner, and the outlet air temperature raising program of the air conditioner realizes the steps of the outlet air temperature raising method of the air conditioner when being executed by the processor.
It should be noted that the above mentioned embodiments are only examples of the present invention, and not intended to limit the scope of the present invention, and all equivalent structures or equivalent flow transformations made by using the contents of the present specification and drawings, or applied directly or indirectly to other related technical fields, are included in the scope of the present invention.
Claims (11)
1. An air conditioner, characterized in that the air conditioner comprises:
a compressor including a return air port and an exhaust port;
the first indoor heat exchanger is communicated between the return air port and the exhaust port of the compressor;
the vortex tube comprises a vortex tube inlet, a hot end outlet and a cold end outlet, the vortex tube inlet is connected between a return air port and an exhaust port of the compressor, the hot end outlet is communicated with the return air port of the compressor, the cold end outlet is communicated with the return air port, and the hot end outlet is provided with a flow regulating valve;
the second indoor heat exchanger is connected between the hot end outlet of the vortex tube and the return air port of the compressor, and the first indoor heat exchanger and the second indoor heat exchanger are both arranged in an indoor unit of the air conditioner;
a first control valve in communication with the vortex tube inlet.
2. The air conditioner of claim 1, wherein the air conditioner includes an indoor unit, and wherein the first indoor heat exchanger and the second indoor heat exchanger are both located within a same duct of the indoor unit.
3. The air conditioner of claim 1 or 2 further comprising a second control valve connected between said cold end outlet and said return air port.
4. The air conditioner according to claim 3, further comprising an electric auxiliary heating device provided in the indoor unit and an indoor fan, the electric auxiliary heating device being located on a suction side of the indoor fan.
5. The method for increasing the outlet air temperature of the air conditioner is applied to the air conditioner as claimed in any one of claims 1 to 4, and is characterized by comprising the following steps:
when the air conditioner enters a heating mode, acquiring indoor temperature and/or outdoor temperature;
and when the indoor temperature and/or the outdoor temperature are/is smaller than or equal to a first preset temperature, controlling the flow regulating valve to be opened to a first opening value, and controlling the first control valve to be opened to a second opening value.
6. The method for increasing the outlet air temperature of the air conditioner according to claim 5, wherein the step of controlling the flow regulating valve to open to the first opening value and the step of controlling the first control valve to open to the second opening value simultaneously or subsequently further comprises the steps of:
and controlling the second control valve to open to a third opening value.
7. The method for increasing the outlet air temperature of the air conditioner according to claim 6, wherein the step of controlling the second control valve to be opened to the third opening value is followed by:
when the temperature of the first indoor heat exchanger and/or the second indoor heat exchanger reaches a second preset temperature, controlling the flow regulating valve to be opened to a fourth opening value and controlling the first control valve to be opened to a fifth opening value;
or when the temperature of the first indoor heat exchanger and/or the second indoor heat exchanger reaches a second preset temperature, controlling the outlet of the hot end of the vortex tube to be opened to a fourth opening value, controlling the first control valve to be opened to a fifth opening value and controlling the second control valve to be opened to a sixth opening value;
the ratio of the sixth opening value to the fifth opening value is greater than the ratio of the third opening value to the second opening value, and the second preset temperature is higher than the first preset temperature.
8. The method for increasing outlet air temperature of an air conditioner according to claim 7, wherein the steps of controlling the opening of the hot end outlet of the vortex tube to a fourth opening value, controlling the opening of the first control valve to a fifth opening value, and controlling the opening of the second control valve to a sixth opening value are further followed by:
when a preset condition is met, closing the first control valve and the second control valve;
wherein the preset condition comprises at least one of:
the exhaust temperature of the compressor reaches the preset exhaust temperature;
the condensation temperature of the first indoor heat exchanger reaches a preset condensation temperature;
and the duration of the first control valve opening to the fifth opening value and the second control valve opening to the sixth opening value is controlled to reach a first preset duration.
9. The method for increasing the outlet air temperature of an air conditioner according to claim 8, wherein the step of closing the first control valve and the second control valve further comprises the following steps:
and closing the flow regulating valve after closing the first control valve and the second control valve for a second preset time.
10. The method for increasing outlet air temperature of an air conditioner according to claim 7 or 8, wherein after the steps of controlling the opening of the hot end outlet of the vortex tube to the fourth opening value, controlling the opening of the first control valve to the fifth opening value, and controlling the opening of the second control valve to the sixth opening value, the method further comprises:
and when the current indoor temperature and/or the current outdoor temperature are/is less than or equal to the first preset temperature, starting the electric auxiliary heating device.
11. A storage medium, wherein the storage medium stores an outlet air temperature raising program of an air conditioner, and when the outlet air temperature raising program of the air conditioner is executed by a processor, the steps of the outlet air temperature raising method of the air conditioner according to any one of claims 5 to 10 are implemented.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117387239A (en) * | 2023-12-12 | 2024-01-12 | 珠海格力电器股份有限公司 | Air conditioning system and related control method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117387239A (en) * | 2023-12-12 | 2024-01-12 | 珠海格力电器股份有限公司 | Air conditioning system and related control method |
| CN117387239B (en) * | 2023-12-12 | 2024-05-03 | 珠海格力电器股份有限公司 | Air conditioning system and related control method |
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