CN114413341A - Air conditioner and air conditioner refrigerant flow control method - Google Patents
Air conditioner and air conditioner refrigerant flow control method Download PDFInfo
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- CN114413341A CN114413341A CN202111672533.0A CN202111672533A CN114413341A CN 114413341 A CN114413341 A CN 114413341A CN 202111672533 A CN202111672533 A CN 202111672533A CN 114413341 A CN114413341 A CN 114413341A
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- 239000003507 refrigerant Substances 0.000 title claims abstract description 139
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000005057 refrigeration Methods 0.000 description 14
- 230000008859 change Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 5
- 238000001816 cooling Methods 0.000 description 3
- 239000007791 liquid phase Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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- 230000004048 modification Effects 0.000 description 1
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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
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0059—Indoor units, e.g. fan coil units characterised by heat exchangers
- F24F1/0063—Indoor units, e.g. fan coil units characterised by heat exchangers by the mounting or arrangement of the heat exchangers
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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
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/54—Control or safety arrangements characterised by user interfaces or communication using one central controller connected to several sub-controllers
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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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control 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
- F24F11/84—Control 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
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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
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/30—Arrangement or mounting of heat-exchangers
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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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- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
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Abstract
The invention discloses an air conditioner and a method for controlling the flow of a refrigerant of the air conditioner, wherein the air conditioner comprises a refrigerant circulation loop, an outdoor heat exchanger, an indoor heat exchanger, an electromagnetic valve, a first throttling part, a second throttling part, an indoor temperature sensor, an outdoor temperature sensor and a controller, and the controller is configured as follows: acquiring the indoor temperature and the outdoor temperature; and determining a flow path of the refrigerant based on the indoor temperature and the outdoor temperature, wherein the flow path is the first refrigerant flow path or the second refrigerant flow path, and two different refrigerant flow regulation schemes can be provided for different room loads. The scheme can solve the problems of complicated design, high cost and single regulation means of the constant flow component of the variable flow component.
Description
Technical Field
The application relates to the technical field of air conditioners, in particular to an air conditioner and a method for controlling refrigerant flow of the air conditioner.
Background
The throttle parts of the existing air conditioner comprise a variable flow part (such as an electronic expansion valve and a thermal expansion valve, which are collectively called as variable flow parts for the convenience of description) and a constant flow part (such as a capillary tube, a throttle valve and a throttle orifice plate, which are collectively called as constant flow parts for the convenience of description), and the two throttle parts have respective characteristics: the variable flow component can change the size of the opening according to the state change of the refrigeration system, thereby changing the flow of the refrigerant, being beneficial to improving the refrigeration and heating effects of the air conditioner and having relatively high price; the constant flow component can not change the flow of the refrigerant according to the state change of the refrigeration system, and the air conditioner has poor refrigeration and heating effects and low price.
For some regions (such as southeast Asia), the annual temperature difference is small, the operation working condition of the air conditioner is simple, the air conditioner is in a single cooling mode, the influence of a variable flow component on the refrigeration effect is not obvious, and the problems of complicated design and high cost exist; although the constant flow component has the advantage of cost, the flow is basically designed according to the rated working condition, and the problems of small flow and poor refrigeration effect exist in the high-load working condition.
Therefore, how to provide an air conditioner and a method for controlling the flow rate of refrigerant of the air conditioner to solve the problems of complicated design of a variable flow rate component, high cost and single adjustment means of a constant flow rate component is a technical problem to be solved at present.
Disclosure of Invention
The invention provides an air conditioner, which is used for solving the technical problems of complicated design, high cost and single adjusting means of a constant flow component of the air conditioner in the prior art.
The air conditioner includes:
a refrigerant circulation loop, which makes the refrigerant circulate in the loop formed by the compressor, the condenser, the expansion valve and the evaporator;
an outdoor heat exchanger and an indoor heat exchanger, wherein one of the heat exchangers operates as a condenser and the other operates as an evaporator;
the electromagnetic valve is connected with the first throttling component in series to form a first refrigerant flow path and controls the opening of the first refrigerant flow path;
the second throttling component is used as a second refrigerant flow path and used for controlling the flow rate of the refrigerant;
an indoor temperature sensor for acquiring an indoor temperature;
an outdoor temperature sensor for acquiring outdoor temperature;
a controller configured to:
acquiring the indoor temperature and the outdoor temperature;
determining a flow path of the refrigerant based on the indoor temperature and the outdoor temperature, wherein the flow path is the first refrigerant flow path or the second refrigerant flow path.
In some embodiments of the present application, the control appliance is configured to:
when the outdoor temperature is higher than a first preset value and the indoor temperature is higher than a second preset value, opening an electromagnetic valve and controlling the refrigerant to pass through the first throttling passage;
when the outdoor temperature is higher than the first preset value and the indoor temperature is not higher than the second preset value, opening an electromagnetic valve and controlling the refrigerant to pass through the first throttling passage;
when the outdoor temperature is not more than the first preset value and the indoor temperature is more than the second preset value, opening an electromagnetic valve and controlling the refrigerant to pass through the first throttling passage;
and when the outdoor temperature is not more than a first preset value and the indoor temperature is not more than a second preset value, closing the electromagnetic valve and controlling the refrigerant to pass through the second throttling passage.
In some embodiments of the present application, the first throttling member is a throttling valve or a capillary tube, and the second throttling member is a throttling valve or a capillary tube.
In some embodiments of the present application, the first throttle passage and the second throttle passage are connected in parallel between the indoor heat exchanger and the outdoor heat exchanger.
In some embodiments of the present application, the flow rate in the first orifice passage is greater than the flow rate in the second orifice passage.
Correspondingly, the invention also provides an air conditioner refrigerant flow control method, which is applied to an air conditioner comprising a refrigerant circulation loop, an outdoor heat exchanger, an indoor heat exchanger, an electromagnetic valve, a first throttling part, a second throttling part, an indoor temperature sensor, an outdoor temperature sensor and a controller, and the method comprises the following steps:
acquiring the indoor temperature and the outdoor temperature;
determining a flow path of the refrigerant based on the indoor temperature and the outdoor temperature, wherein the flow path is the first refrigerant flow path or the second refrigerant flow path.
In some embodiments of the present application, the determining the flow path of the refrigerant based on the indoor temperature and the outdoor temperature specifically includes:
when the outdoor temperature is higher than a first preset value and the indoor temperature is higher than a second preset value, opening an electromagnetic valve and controlling the refrigerant to pass through the first throttling passage;
when the outdoor temperature is higher than the first preset value and the indoor temperature is not higher than the second preset value, opening an electromagnetic valve and controlling the refrigerant to pass through the first throttling passage;
when the outdoor temperature is not more than the first preset value and the indoor temperature is more than the second preset value, opening an electromagnetic valve and controlling the refrigerant to pass through the first throttling passage;
and when the outdoor temperature is not more than a first preset value and the indoor temperature is not more than a second preset value, closing the electromagnetic valve and controlling the refrigerant to pass through the second throttling passage.
In some embodiments of the present application, the first throttling member is a throttling valve or a capillary tube, and the second throttling member is a throttling valve or a capillary tube.
In some embodiments of the present application, the first throttle passage and the second throttle passage are connected in parallel between the indoor heat exchanger and the outdoor heat exchanger.
In some embodiments of the present application, the flow rate in the first orifice passage is greater than the flow rate in the second orifice passage.
By applying the above technical solution, in an air conditioner including a refrigerant circulation circuit, an outdoor heat exchanger, an indoor heat exchanger, a solenoid valve, a first throttling part, a second throttling part, an indoor temperature sensor, an outdoor temperature sensor, and a controller, the controller is configured to: acquiring the indoor temperature and the outdoor temperature; and determining a flow path of the refrigerant based on the indoor temperature and the outdoor temperature, wherein the flow path is the first refrigerant flow path or the second refrigerant flow path, so that two different refrigerant flow regulation schemes can be provided for different room loads. The scheme can solve the problems of complicated design, high cost and single regulation means of the constant flow component of the variable flow component.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an air conditioner according to an embodiment of the present invention;
fig. 2 is a schematic flow chart illustrating a method for controlling refrigerant flow of an air conditioner according to an embodiment of the present invention;
fig. 3 is a flow chart illustrating a method for controlling refrigerant flow of an air conditioner according to another embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
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 application, "a plurality" means two or more unless otherwise specified.
The air conditioner performs a refrigeration cycle by using a compressor, a condenser, an expansion valve, and an evaporator in the present application. 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 a condenser, the condenser condenses the compressed refrigerant into a liquid phase, and heat is released to the surrounding environment through a 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 outdoor unit of the air conditioner refers to a portion of a refrigeration cycle including a compressor and an outdoor heat exchanger, the indoor unit of the air conditioner includes an indoor heat exchanger, and an expansion valve may be provided in the 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.
An embodiment of the present application provides an air conditioner, as shown in fig. 1, including:
a refrigerant circulation loop, which makes the refrigerant circulate in the loop formed by the compressor, the condenser, the expansion valve and the evaporator;
an outdoor heat exchanger and an indoor heat exchanger, wherein one of the heat exchangers operates as a condenser and the other operates as an evaporator;
the electromagnetic valve is connected with the first throttling component in series to form a first refrigerant flow path and controls the opening of the first refrigerant flow path;
the second throttling component is used as a second refrigerant flow path and used for controlling the flow rate of the refrigerant;
an indoor temperature sensor for acquiring an indoor temperature;
an outdoor temperature sensor for acquiring outdoor temperature;
a controller configured to:
acquiring the indoor temperature and the outdoor temperature;
determining a flow path of the refrigerant based on the indoor temperature and the outdoor temperature, wherein the flow path is the first refrigerant flow path or the second refrigerant flow path.
In this embodiment, as described in the background art, the throttle component of the air conditioner at present includes a variable flow component (such as an electronic expansion valve and a thermostatic expansion valve, which are collectively referred to as a variable flow component for convenience of description) and a constant flow component (such as a capillary tube, a throttle valve, and a throttle orifice plate, which are collectively referred to as a constant flow component for convenience of description), and the two throttle components have respective characteristics: the variable flow component can change the size of the opening according to the state change of the refrigeration system, thereby changing the flow of the refrigerant, being beneficial to improving the refrigeration and heating effects of the air conditioner and having relatively high price; the constant flow component can not change the flow of the refrigerant according to the state change of the refrigeration system, and the air conditioner has poor refrigeration and heating effects and low price.
In the scheme, a novel throttling component is arranged, the first throttling component and the electromagnetic valve are connected in series to form a first refrigerant flow path, the opening and closing of the electromagnetic valve controls the opening of the first refrigerant flow path, the electromagnetic valve is used for controlling the closing and opening of the flow path, but not limited to the electromagnetic valve, components with similar functions can replace the electromagnetic valve, a second throttling component is arranged to serve as a second refrigerant flow path, the indoor temperature and the outdoor temperature are obtained through an indoor temperature sensor and an outdoor temperature sensor, the flow path of the refrigerant is dynamically determined according to the indoor temperature and the outdoor temperature, when the number of the refrigerants is large, the refrigerant passes through the first refrigerant flow path, and otherwise, the refrigerant passes through the second refrigerant flow path.
In order to realize the control of the refrigerant flow, in some embodiments of the present application, the controller is configured to:
when the outdoor temperature is higher than a first preset value and the indoor temperature is higher than a second preset value, opening an electromagnetic valve and controlling the refrigerant to pass through the first throttling passage;
when the outdoor temperature is higher than the first preset value and the indoor temperature is not higher than the second preset value, opening an electromagnetic valve and controlling the refrigerant to pass through the first throttling passage;
when the outdoor temperature is not more than the first preset value and the indoor temperature is more than the second preset value, opening an electromagnetic valve and controlling the refrigerant to pass through the first throttling passage;
and when the outdoor temperature is not more than a first preset value and the indoor temperature is not more than a second preset value, closing the electromagnetic valve and controlling the refrigerant to pass through the second throttling passage.
In this embodiment, the specific control steps are as follows: when the outdoor temperature is higher than a first preset value and the indoor temperature is higher than a second preset value, opening an electromagnetic valve and controlling the refrigerant to pass through the first throttling passage; when the outdoor temperature is higher than the first preset value and the indoor temperature is not higher than the second preset value, opening an electromagnetic valve and controlling the refrigerant to pass through the first throttling passage; when the outdoor temperature is not more than the first preset value and the indoor temperature is more than the second preset value, opening an electromagnetic valve and controlling the refrigerant to pass through the first throttling passage; and when the outdoor temperature is not more than a first preset value and the indoor temperature is not more than a second preset value, closing the electromagnetic valve and controlling the refrigerant to pass through the second throttling passage. The first preset value is preferably 35, or an integer of more than 30 may be selected, and the second preset value is preferably 25, or an integer value of more than 20 may be selected.
In some embodiments of the present disclosure, the first throttling component is a throttling valve or a capillary tube, and the second throttling component is a throttling valve or a capillary tube.
In this embodiment, the first throttling component is preferably a throttling valve or a capillary tube, the second throttling component is preferably a throttling valve or a capillary tube, the first throttling component and the second throttling component have the throttling function, and the first throttling component and the second throttling component are not limited to the capillary tube and the throttling valve, and other throttling elements with similar functions are also applicable.
In order to control the flow rate of the refrigerant, in some embodiments of the present application, the first throttling passage and the second throttling passage are connected in parallel between the indoor heat exchanger and the outdoor heat exchanger.
In this embodiment, as shown in fig. 1, the first throttle passage and the second throttle passage are connected in parallel and are located between the indoor heat exchanger and the outdoor heat exchanger.
In some embodiments of the present disclosure, a flow rate of the first throttling passage is greater than a flow rate of the second throttling passage in order to control a flow rate of the refrigerant.
The flow rate of the first throttling component is larger than that of the second throttling component, the first throttling component is applied to a high-load working condition, and the second throttling component is applied to a low-load working condition.
By applying the above technical solution, in an air conditioner including a refrigerant circulation circuit, an outdoor heat exchanger, an indoor heat exchanger, a solenoid valve, a first throttling part, a second throttling part, an indoor temperature sensor, an outdoor temperature sensor, and a controller, the controller is configured to: acquiring the indoor temperature and the outdoor temperature; and determining a flow path of the refrigerant based on the indoor temperature and the outdoor temperature, wherein the flow path is the first refrigerant flow path or the second refrigerant flow path, and two different refrigerant flow regulation schemes can be provided for different room loads. The scheme can solve the problems of complicated design, high cost and single regulation means of the constant flow component of the variable flow component.
In order to further illustrate the technical idea of the present invention, the technical solution of the present invention will now be described with reference to specific application scenarios.
The embodiment of the application provides a method for controlling refrigerant flow of an air conditioner, which is applied to the air conditioner comprising a refrigerant circulation loop, an outdoor heat exchanger, an indoor heat exchanger, an electromagnetic valve, a first throttling part, a second throttling part, an indoor temperature sensor, an outdoor temperature sensor and a controller, and as shown in fig. 2, the method comprises the following steps:
step S201, acquiring the indoor temperature and the outdoor temperature.
And acquiring the indoor temperature and the outdoor temperature through the indoor temperature sensor and the outdoor temperature sensor.
Step S202, determining a flow path of the refrigerant based on the indoor temperature and the outdoor temperature, where the flow path is the first refrigerant flow path or the second refrigerant flow path.
The first throttling component and the electromagnetic valve are connected in series to form a first refrigerant flow path, the opening and closing of the electromagnetic valve controls the opening of the first refrigerant flow path, the electromagnetic valve is used for controlling the closing and opening of the flow path, but the electromagnetic valve is not limited to the electromagnetic valve, components with similar functions can replace the electromagnetic valve, the second throttling component is arranged as a second refrigerant flow path, and the flow path of the refrigerant is dynamically determined according to the indoor temperature and the outdoor temperature.
And when the infrared image is detected to be no target at this time and the infrared image is detected to be a target before, performing technology through the second counter, and outputting a target detection result and a target position coordinate.
In order to realize the control of the refrigerant flow, the flow path of the refrigerant is determined based on the indoor temperature and the outdoor temperature, specifically:
when the outdoor temperature is higher than a first preset value and the indoor temperature is higher than a second preset value, opening an electromagnetic valve and controlling the refrigerant to pass through the first throttling passage;
when the outdoor temperature is higher than the first preset value and the indoor temperature is not higher than the second preset value, opening an electromagnetic valve and controlling the refrigerant to pass through the first throttling passage;
when the outdoor temperature is not more than the first preset value and the indoor temperature is more than the second preset value, opening an electromagnetic valve and controlling the refrigerant to pass through the first throttling passage;
and when the outdoor temperature is not more than a first preset value and the indoor temperature is not more than a second preset value, closing the electromagnetic valve and controlling the refrigerant to pass through the second throttling passage.
In this embodiment, the specific control steps are as follows: when the outdoor temperature is higher than a first preset value and the indoor temperature is higher than a second preset value, opening an electromagnetic valve and controlling the refrigerant to pass through the first throttling passage; when the outdoor temperature is higher than the first preset value and the indoor temperature is not higher than the second preset value, opening an electromagnetic valve and controlling the refrigerant to pass through the first throttling passage; when the outdoor temperature is not more than the first preset value and the indoor temperature is more than the second preset value, opening an electromagnetic valve and controlling the refrigerant to pass through the first throttling passage; and when the outdoor temperature is not more than a first preset value and the indoor temperature is not more than a second preset value, closing the electromagnetic valve and controlling the refrigerant to pass through the second throttling passage. The first preset value is preferably 35, or an integer of more than 30 may be selected, and the second preset value is preferably 25, or an integer value of more than 20 may be selected.
In some embodiments of the present disclosure, the first throttling component is a throttling valve or a capillary tube, and the second throttling component is a throttling valve or a capillary tube.
In this embodiment, the first throttling component is preferably a throttling valve or a capillary tube, the second throttling component is preferably a throttling valve or a capillary tube, the first throttling component and the second throttling component have the throttling function, and the first throttling component and the second throttling component are not limited to the capillary tube and the throttling valve, and other throttling elements with similar functions are also applicable.
In order to control the flow rate of the refrigerant, in some embodiments of the present application, the first throttling passage and the second throttling passage are connected in parallel between the indoor heat exchanger and the outdoor heat exchanger.
In this embodiment, as shown in fig. 1, the first throttle passage and the second throttle passage are connected in parallel and are located between the indoor heat exchanger and the outdoor heat exchanger.
In some embodiments of the present disclosure, a flow rate of the first throttling passage is greater than a flow rate of the second throttling passage in order to control a flow rate of the refrigerant.
The flow rate of the first throttling component is larger than that of the second throttling component, the first throttling component is applied to a high-load working condition, and the second throttling component is applied to a low-load working condition.
To further explain the technical solution, another embodiment of the present application provides a method for controlling a refrigerant flow rate of an air conditioner, as shown in fig. 3:
when the air conditioner operates in a refrigeration mode, the refrigerant is discharged from the compressor, enters the outdoor heat exchanger, releases heat and enters the pipeline. As shown in fig. 3, when the air conditioner sensor determines the outdoor temperature t1 and the indoor temperature t2, the following 4 situations occur:
1. if t1 is greater than 35 deg.C (35 is a preferred value, and an integer of more than 30 is optional), t2 is greater than 25 deg.C (25 is a preferred value, and an integer of more than 20 is optional), then the indoor load is determined to be high, the electromagnetic valve is opened, and the refrigerant passes through the first throttling component flow path because the first throttling component flow rate is greater than the second throttling component flow rate;
2. if t1 is more than 35 deg.C (35 is a preferred value, optionally an integer more than 30) and t2 is less than or equal to 25 deg.C (25 is a preferred value, optionally an integer more than 20), then the indoor load is not high, but the outdoor load is high, the electromagnetic valve is opened, and the refrigerant passes through the first throttle part flow path because the first throttle part flow rate is larger than the second throttle part flow rate;
3. if t1 is less than or equal to 35 ℃ (35 is an optimized value, and an integer more than 30 is optional), and t2 is more than 25 ℃ (25 is an optimized value, and an integer more than 20 is optional), the indoor load is determined to be high, the electromagnetic valve is opened, and the refrigerant passes through the first throttling component flow path because the flow rate of the first throttling component is greater than that of the second throttling component flow rate;
4. if t1 is less than or equal to 35 deg.C (35 is a preferred value, and an integer of more than 30 is optional) and t2 is less than or equal to 25 deg.C (25 is a preferred value, and an integer of more than 20 is optional), then the indoor load is determined to be low, the electromagnetic valve is closed, and the refrigerant passes through the second throttling component flow path;
in the scheme, the most important part is that the electromagnetic valve switch is controlled by distinguishing the ambient temperature, namely the circulation of the first throttling component and the second throttling component, so that the matching of the refrigerant flow with the high-load working condition and the low-load working condition is realized. In the scheme, the electromagnetic valve is used for controlling the closing and opening of the flow path, but the electromagnetic valve is not limited to be used, and components with similar functions can be used for replacing the electromagnetic valve; the first throttling component, the second throttling component and the electromagnetic valve are arranged between the indoor heat exchanger and the outdoor heat exchanger; the electromagnetic valve is connected with the first throttling component in series; the electromagnetic valve, the first throttling component and the second throttling component are connected in parallel.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not necessarily depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.
Claims (10)
1. An air conditioner, comprising:
a refrigerant circulation loop, which makes the refrigerant circulate in the loop formed by the compressor, the condenser, the expansion valve and the evaporator;
an outdoor heat exchanger and an indoor heat exchanger, wherein one of the heat exchangers operates as a condenser and the other operates as an evaporator;
the electromagnetic valve is connected with the first throttling component in series to form a first refrigerant flow path and controls the opening of the first refrigerant flow path;
the second throttling component is used as a second refrigerant flow path and used for controlling the flow rate of the refrigerant;
an indoor temperature sensor for acquiring an indoor temperature;
an outdoor temperature sensor for acquiring outdoor temperature;
a controller configured to:
acquiring the indoor temperature and the outdoor temperature;
determining a flow path of the refrigerant based on the indoor temperature and the outdoor temperature, wherein the flow path is the first refrigerant flow path or the second refrigerant flow path.
2. The air conditioner according to claim 1, wherein the control appliance body is configured to:
when the outdoor temperature is higher than a first preset value and the indoor temperature is higher than a second preset value, opening an electromagnetic valve and controlling the refrigerant to pass through the first throttling passage;
when the outdoor temperature is higher than the first preset value and the indoor temperature is not higher than the second preset value, opening an electromagnetic valve and controlling the refrigerant to pass through the first throttling passage;
when the outdoor temperature is not more than the first preset value and the indoor temperature is more than the second preset value, opening an electromagnetic valve and controlling the refrigerant to pass through the first throttling passage;
and when the outdoor temperature is not more than a first preset value and the indoor temperature is not more than a second preset value, closing the electromagnetic valve and controlling the refrigerant to pass through the second throttling passage.
3. The air conditioner according to claim 1, wherein the first throttling part is a throttling valve or a capillary tube, and the second throttling part is a throttling valve or a capillary tube.
4. The air conditioner according to claim 1, wherein the first throttle passage and the second throttle passage are connected in parallel between the indoor heat exchanger and the outdoor heat exchanger.
5. The air conditioner according to claim 1, wherein a flow rate in the first throttle passage is greater than a flow rate in the second throttle passage.
6. A method for controlling the flow of refrigerant of an air conditioner is characterized by being applied to the air conditioner comprising a refrigerant circulation loop, an outdoor heat exchanger, an indoor heat exchanger, an electromagnetic valve, a first throttling part, a second throttling part, an indoor temperature sensor, an outdoor temperature sensor and a controller, and comprising the following steps:
acquiring the indoor temperature and the outdoor temperature;
determining a flow path of the refrigerant based on the indoor temperature and the outdoor temperature, wherein the flow path is the first refrigerant flow path or the second refrigerant flow path.
7. The method as claimed in claim 6, wherein determining the refrigerant flow path based on the indoor temperature and the outdoor temperature comprises:
when the outdoor temperature is higher than a first preset value and the indoor temperature is higher than a second preset value, opening an electromagnetic valve and controlling the refrigerant to pass through the first throttling passage;
when the outdoor temperature is higher than the first preset value and the indoor temperature is not higher than the second preset value, opening an electromagnetic valve and controlling the refrigerant to pass through the first throttling passage;
when the outdoor temperature is not more than the first preset value and the indoor temperature is more than the second preset value, opening an electromagnetic valve and controlling the refrigerant to pass through the first throttling passage;
and when the outdoor temperature is not more than a first preset value and the indoor temperature is not more than a second preset value, closing the electromagnetic valve and controlling the refrigerant to pass through the second throttling passage.
8. The method of claim 6, wherein the first throttling element is a throttling valve or a capillary tube and the second throttling element is a throttling valve or a capillary tube.
9. The method of claim 6, wherein the first throttling passage and the second throttling passage are connected in parallel between an indoor heat exchanger and an outdoor heat exchanger.
10. The method of claim 6, wherein a flow rate in the first choke passage is greater than a flow rate in the second choke passage.
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| CN202111672533.0A CN114413341A (en) | 2021-12-31 | 2021-12-31 | Air conditioner and air conditioner refrigerant flow control method |
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| CN106352585A (en) * | 2016-09-29 | 2017-01-25 | 广东美的制冷设备有限公司 | Air-conditioning system and control method thereof |
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Address after: No.1, Hisense Road, Nancun Town, Pingdu City, Qingdao City, Shandong Province 266700 Applicant after: Hisense Air Conditioning Co.,Ltd. Address before: No.1, Hisense Road, Nancun Town, Pingdu City, Qingdao City, Shandong Province 266700 Applicant before: HISENSE (SHANDONG) AIR-CONDITIONING Co.,Ltd. |
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